Os autores agradecem Jayden Smith para revisão crítica e edição de prova do manuscrito. Este trabalho recebeu o apoio da National Multiple Sclerosis Society (NMSS, bolsas parciais RG-4001-A1), o italiano Multiple Sclerosis Association (AISM, conceder 2010/R/31), o Ministério italiano da Saúde (GR08-7), Wings for Life, Banca Popolare di Ragusa Agricola (BAPr), o Conselho Europeu de Investigação (ERC) no âmbito do acordo ERC-2010-StG Grant não o Programa 7 quadro da Comunidade Europeia (CE) 260511-SEM_SEM e (FP7/2007-2013) sob acordo de subvenção n * graus; 280772 - Ione.

<ol>
	<li>Ben-Hur, T., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Transplanted+multipotential+neural+precursor+cells+migrate+into+the+inflamed+white+matter+in+response+to+experimental+autoimmune+encephalomyelitis.">Transplanted multipotential neural precursor cells migrate into the inflamed white matter in response to experimental autoimmune encephalomyelitis.</a> Glia. 41, 73-80 (2003).</li><li>Pluchino, S., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Injection+of+adult+neurospheres+induces+recovery+in+a+chronic+model+of+multiple+sclerosis.">Injection of adult neurospheres induces recovery in a chronic model of multiple sclerosis.</a> Nature. 422, 688-694 (2003).</li><li>Chu, K., Kim, M., Jeong, S. W., Kim, S. U., Yoon, B. W. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Human+neural+stem+cells+can+migrate,+differentiate,+and+integrate+after+intravenous+transplantation+in+adult+rats+with+transient+forebrain+ischemia.">Human neural stem cells can migrate, differentiate, and integrate after intravenous transplantation in adult rats with transient forebrain ischemia.</a> Neurosci. Lett. 343, 129-133 (2003).</li><li>Bottai, D., Madaschi, L., Di Giulio, A. M., Gorio, A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Viability-dependent+promoting+action+of+adult+neural+precursors+in+spinal+cord+injury.">Viability-dependent promoting action of adult neural precursors in spinal cord injury.</a> Mol. Med. 14, 634-644 (2008).</li><li>Pluchino, S., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Neurosphere-derived+multipotent+precursors+promote+neuroprotection+by+an+immunomodulatory+mechanism.">Neurosphere-derived multipotent precursors promote neuroprotection by an immunomodulatory mechanism.</a> Nature. 436, 266-271 (2005).</li><li>Einstein, O., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Intraventricular+transplantation+of+neural+precursor+cell+spheres+attenuates+acute+experimental+allergic+encephalomyelitis.">Intraventricular transplantation of neural precursor cell spheres attenuates acute experimental allergic encephalomyelitis.</a> Mol. Cell Neurosci. 24, 1074-1082 (2003).</li><li>Chu, K., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Human+neural+stem+cell+transplantation+reduces+spontaneous+recurrent+seizures+following+pilocarpine-induced+status+epilepticus+in+adult+rats.">Human neural stem cell transplantation reduces spontaneous recurrent seizures following pilocarpine-induced status epilepticus in adult rats.</a> Brain Res. 1023, 213-221 (2004).</li><li>Jeong, S. W., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Human+neural+stem+cell+transplantation+promotes+functional+recovery+in+rats+with+experimental+intracerebral+hemorrhage.">Human neural stem cell transplantation promotes functional recovery in rats with experimental intracerebral hemorrhage.</a> Stroke. 34, 2258-2263 (2003).</li><li>Aboody, K. S., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Neural+stem+cells+display+extensive+tropism+for+pathology+in+adult+brain:+evidence+from+intracranial+gliomas.">Neural stem cells display extensive tropism for pathology in adult brain: evidence from intracranial gliomas.</a> Proc. Natl. Acad. Sci. U.S.A. 97, 12846-12851 (2000).</li><li>Muller, F. J., Snyder, E. Y., Loring, J. F. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Gene+therapy:+can+neural+stem+cells+deliver.">Gene therapy: can neural stem cells deliver.</a> Nat. Rev. Neurosci. 7, 75-84 (2006).</li><li>Martino, G., Pluchino, S. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+therapeutic+potential+of+neural+stem+cells.">The therapeutic potential of neural stem cells.</a> Nat. Rev. Neurosci. 7, 395-406 (2006).</li><li>Deckert-Schluter, M., Schluter, D., Hof, H., Wiestler, O. D., Lassmann, H. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Differential+expression+of+ICAM-1,+VCAM-1+and+their+ligands+LFA-1,+Mac-1,+CD43,+VLA-4,+and+MHC+class+II+antigens+in+murine+Toxoplasma+encephalitis:+a+light+microscopic+and+ultrastructural+immunohistochemical+study.">Differential expression of ICAM-1, VCAM-1 and their ligands LFA-1, Mac-1, CD43, VLA-4, and MHC class II antigens in murine Toxoplasma encephalitis: a light microscopic and ultrastructural immunohistochemical study.</a> J. Neuropathol. Exp. Neurol. 53, 457-468 (1994).</li><li>Hemmer, B., Archelos, J. J., Hartung, H. P. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=New+concepts+in+the+immunopathogenesis+of+multiple+sclerosis.">New concepts in the immunopathogenesis of multiple sclerosis.</a> Nat. Rev. Neurosci. 3, 291-301 (2002).</li><li>Butcher, E. C., Picker, L. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Lymphocyte+homing+and+homeostasis.">Lymphocyte homing and homeostasis.</a> Science. 272, 60-66 (1996).</li><li>Rampon, C., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Molecular+mechanism+of+systemic+delivery+of+neural+precursor+cells+to+the+brain:+assembly+of+brain+endothelial+apical+cups+and+control+of+transmigration+by+CD44.">Molecular mechanism of systemic delivery of neural precursor cells to the brain: assembly of brain endothelial apical cups and control of transmigration by CD44.</a> Stem Cells. 26, 1673-1682 (2008).</li><li>Pluchino, S., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Human+neural+stem+cells+ameliorate+autoimmune+encephalomyelitis+in+non-human+primates.">Human neural stem cells ameliorate autoimmune encephalomyelitis in non-human primates.</a> Ann. Neurol. 66, 343-354 (2009).</li><li>Martino, G., Pluchino, S., Bonfanti, L., Schwartz, M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Brain+regeneration+in+physiology+and+pathology:+the+immune+signature+driving+therapeutic+plasticity+of+neural+stem+cells.">Brain regeneration in physiology and pathology: the immune signature driving therapeutic plasticity of neural stem cells.</a> Physiol. Rev. 91, 1281-1304 (2011).</li><li>Aharonowiz, M., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Neuroprotective+effect+of+transplanted+human+embryonic+stem+cell-derived+neural+precursors+in+an+animal+model+of+multiple+sclerosis.">Neuroprotective effect of transplanted human embryonic stem cell-derived neural precursors in an animal model of multiple sclerosis.</a> PLoS ONE. 3, e3145 (2008).</li><li>Pluchino, S., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Immune+regulatory+neural+stem/precursor+cells+protect+from+central+nervous+system+autoimmunity+by+restraining+dendritic+cell+function.">Immune regulatory neural stem/precursor cells protect from central nervous system autoimmunity by restraining dendritic cell function.</a> PLoS One. 4, (2009).</li><li>Einstein, O., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Neural+precursors+attenuate+autoimmune+encephalomyelitis+by+peripheral+immunosuppression.">Neural precursors attenuate autoimmune encephalomyelitis by peripheral immunosuppression.</a> Ann. Neurol. 61, 209-218 (2007).</li><li>Gritti, A., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Multipotential+stem+cells+from+the+adult+mouse+brain+proliferate+and+self-renew+in+response+to+basic+fibroblast+growth+factor.">Multipotential stem cells from the adult mouse brain proliferate and self-renew in response to basic fibroblast growth factor.</a> J. Neurosci. 16, 1091-1100 (1996).</li><li>Furlan, R., Pluchino, S., Marconi, P. C., Martino, G. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Cytokine+gene+delivery+into+the+central+nervous+system+using+intrathecally+injected+nonreplicative+viral+vectors.">Cytokine gene delivery into the central nervous system using intrathecally injected nonreplicative viral vectors.</a> Methods Mol. Biol. 215, 279-289 (2003).</li><li>Constantin, G. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Visualization+and+analysis+of+adhesive+events+in+brain+microvessels+by+using+intravital+microscopy.">Visualization and analysis of adhesive events in brain microvessels by using intravital microscopy.</a> Methods Mol. Biol. 239, 189-198 (2004).</li><li>Politi, L. S., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Magnetic-resonance-based+tracking+and+quantification+of+intravenously+injected+neural+stem+cell+accumulation+in+the+brains+of+mice+with+experimental+multiple+sclerosis.">Magnetic-resonance-based tracking and quantification of intravenously injected neural stem cell accumulation in the brains of mice with experimental multiple sclerosis.</a> Stem Cells. 25, 2583-2592 (2007).</li><li>Melzi, R., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Co-graft+of+allogeneic+immune+regulatory+neural+stem+cells+(NPC)+and+pancreatic+islets+mediates+tolerance,+while+inducing+NPC-derived+tumors+in+mice.">Co-graft of allogeneic immune regulatory neural stem cells (NPC) and pancreatic islets mediates tolerance, while inducing NPC-derived tumors in mice.</a> PLoS One. 5, (2010).</li><li>Amariglio, N., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Donor-derived+brain+tumor+following+neural+stem+cell+transplantation+in+an+ataxia+telangiectasia+patient.">Donor-derived brain tumor following neural stem cell transplantation in an ataxia telangiectasia patient.</a> PLoS Med. 6, (2009).</li><li>Ben-Hur, T., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Effects+of+proinflammatory+cytokines+on+the+growth,+fate,+and+motility+of+multipotential+neural+precursor+cells.">Effects of proinflammatory cytokines on the growth, fate, and motility of multipotential neural precursor cells.</a> Mol. Cell Neurosci. 24, 623-631 (2003).</li><li>Giusto, E., Donega, M., Cossetti, C., Pluchino, S. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Neuro-immune+interactions+of+neural+stem+cell+transplants:+From+animal+disease+models+to+human+trials.">Neuro-immune interactions of neural stem cell transplants: From animal disease models to human trials.</a> Exp. Neurol. , (2013).</li></ol>

Os autores não têm nada a revelar.

Terapias baseadas em células estaminais somáticas estão emergindo como uma das estratégias mais promissoras para o tratamento de distúrbios do sistema nervoso central inflamatórias crônicas, como MS2 11. Embora os mecanismos que sustentam os seus efeitos terapêuticos ainda precisam ser completamente elucidada, o impacto significativo do transplante NPC em diferentes modelos experimentais de doenças neurodegenerativas deu origem à crença um tanto provocante que as células estaminais podem em breve ...

Fortes evidências surgiu a partir de estudos in vivo que comprovem a eficácia terapêutica do transplante de células-tronco somáticas neurais / precursoras (NPCs) em modelos animais de doenças do SNC, 1-8. No entanto, uma série de questões relacionadas com a entrega de células-tronco para o acolhimento exigir uma análise cuidadosa antes de estes resultados experimentais podem ser traduzidos em aplicações clínicas. Um obstáculo particularmente importante para o desenvolvimento de terapias com células estaminais restauradores (nonhematopoietic) para, doenças cerebrais inflamatórias crônicas multifocais é a identificação da rota ideal de injeção NPC. Uma sólida compreensão da fisiopatologia da doença-alvo (focal ou multifocal; degenerativa inflamatória ou primária primária), e uma análise cautelosa de questões de viabilidade e de risco associados com as técnicas de entrega são em identificar o protocolo ideal para a entrega de células-tronco. Embora o foco ( <em&gt; Por ex. no parênquima do sistema nervoso), transplante de células estaminais é uma abordagem lógica para o tratamento de doenças do sistema nervoso central caracterizadas por áreas espacialmente confinados de dano (por exemplo, doença de Parkinson e doença de Huntington, do cérebro e da medula espinhal lesões traumáticas, e acidente vascular cerebral), a mesma abordagem pode ser ser praticamente inviável em condições como esclerose múltipla, onde um dano multifocal, crônica, e espacialmente disseminada CNS acumula ao longo do tempo. Neste último caso, visando injeções de células focais de lesões individuais, também é prejudicada pela capacidade limitada de NPCs transplantadas para migrar por longas distâncias dentro do parênquima do SNC, levando, assim, a identificação de métodos alternativos, mais adequados de CNS alvejando com transplantes NPC menos invasivas . Grande promessa surgiu a partir das observações que NPCs como alvo um tumor intracraniano (por exemplo. Glioma) em camundongos quando injetada por via intravenosa fora do CNS9. Seguindo este seminalem evidência in vivo da pathotrophism células-tronco 10, os dados extensos foram acumuladas pertencente à viabilidade e à eficácia terapêutica do transplante de NPCs sistémica em animais de laboratório com encefalomielite auto-imune experimental (EAE), como um modelo de lesão inflamatória do SNC, através quer intravenosa (iv) ou intracerebroventricular (ICV). NPC injeção 1,2,5,6,8 .. Temos mostrado pela primeira vez que esta depende da capacidade de NPCs transplantadas para atacar e entrar no CNS inflamada, e se envolver posteriormente intercelular múltipla programas de comunicação dentro de microambientes específicos in vivo 11. A fim de orientar especificamente o CNS, NPCs são entregues diretamente no líquido cefalorraquidiano (LCR) circulação por injeção icv, ou na corrente sanguínea através de injeção intravenosa. Uma vez que entra ou da corrente sanguínea ou CSF, NPCs transplantados interagir ativamente como hematoencefálica (BBB) ​​ou (BCSFB) barreiras sangue líquido céfalo-raquidiano e entrar no parênquima do SNC. Essa interação entre o enxerto NPC eo BBB (ou BCSFB) é regulada pelo conjunto específico de moléculas de adesão celular NPC superfície (CAMs) e facilitado pela expressão de altos níveis de CAM contra-ligantes em ativados endoteliais / células ependimárias 12-14. Exemplos destas CAMs incluem o receptor de hialuronato, CD44, e a molécula de adesão intercelular (ICAM) -1 ligando antigénio muito tardio (AMT) -4 5,15,16 (que, em leucócitos, são responsáveis ​​da interacção com ependimária activada e células endoteliais), e para um antigénio de Linfócitos muito menor extensão associada à função (LFA) -1 e P-selectina glicoproteína ligando (PSGL) -1. NPCs também expressar uma grande variedade de receptores de quimiocinas, incluindo CCR1, CCR2, CCR5, CXCR3, CXCR4 e (mas não expressam CCR3 e CCR7), que são funcionalmente activos, tanto in vitro como in vivo, 5,16. Assim, systemicaNPCs lly injectados usar estes CAMs, juntamente com a proteína G de receptores acoplados (GPCRs), para acumular a nível do CNS inflamado. Por outro lado, NPCs injetado sistemicamente em ratos saudáveis ​​não entram no CNS via vascular ou cefalorraquidiano rotas espaço fluido 2. Inflamação do SNC, ou endotelial / ativação de células ependimária seguinte citocina sistêmica ou lypopolisaccharide (LPS) de injeção como um modelo de encefalite induzida quimicamente, é necessário que o acúmulo de NPCs sistemicamente injetadas no cérebro e medula espinhal 2. Assim, segmentação bem sucedida do CNS com terapias NPC sistêmicas depende da identificação de uma janela específica doença de oportunidade (WoO), no qual o cérebro ea medula espinhal são ambiente propício para a acumulação e migração transendotelial de NPCs. Tais condições geralmente surgem no contexto de inflamação aguda e subaguda 17. Depois de ter entrado no CNS, transplantado NPCs indiferenciadasforam mostradas para melhorar as características clínico-patológicos de ratinhos, assim como maiores, primatas não humanos com EAE. Este tem sido descrito para ser dependente de substituição de células mínimo 2 e notável secreção de fatores parácrinos imunes reguladoras e neuroprotetores dentro perivascular CNS 2,5,6,18 vs não-SNC áreas inflamadas 19,20 (por exemplo, linfonodos), em resposta à sinalização celular inflamatória provocada pela infiltração de células imunes 5. Aqui nós descrevemos os aspectos metodológicos fundamentais da injeção sistêmica de NPCs somáticas em um modelo do rato de EAE crónica. Mais especificamente, vamos definir os protocolos que estabelecemos para (i) derivam, expanda e se preparar para o transplante NPCs somáticas da zona subventricular (SVZ) de adultos C57BL / 6; (Ii) induzir a EAE crónica em tais ratinhos e (iii) realizar terapeuticamente eficaz sistémica (iv ou icv) NPC transplante icamundongos nto EAE.

<table border="0" cellpadding="0" cellspacing="0" width="1474">
	<colgroup>
		<col />
		<col />
		<col />
		<col />
	</colgroup>
	<tbody>
		<tr height="21">
			<td height="21" style="height:21px;width:753px;">Cell culture</td>
			<td style="width:300px;"></td>
			<td style="width:149px;"></td>
			<td style="width:272px;"></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;">EBSS</td>
			<td>Sigma</td>
			<td>E2888</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;">L-Cystein</td>
			<td>SIGMA-ALDRICH CO LTD</td>
			<td>C7352</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;">Papain</td>
			<td>WORTHINGTON</td>
			<td>30H11965</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;">EDTA</td>
			<td>Fisher scientific</td>
			<td>D/0700/50</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;">Mouse NeuroCult basal medium</td>
			<td>Stem Cell technologies</td>
			<td>05700</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;">NeuroCult proliferation supplements</td>
			<td>Stem Cell technologies</td>
			<td>05701</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;">Heparin</td>
			<td>Sigma</td>
			<td>H3393</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;">Basic fibroblast growth factor</td>
			<td>Peprotech</td>
			<td>100-18B-1000</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;">Epidermal growth factor</td>
			<td>Peprotech</td>
			<td>AF-100-15-1000</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;">Pen/Strep</td>
			<td>Invitrogen</td>
			<td>1514012</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;">Matrigel (coating solution)</td>
			<td>BD biosciences</td>
			<td>354230</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;">NeuroCult&#174; Differentiation Kit (Mouse)</td>
			<td>Stem cell technologies</td>
			<td>05704</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;">Accumax</td>
			<td>eBioscience</td>
			<td>00-4666-56</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;">Dulbecco&#39;s PBS (DPBS) (10x) without Ca&#38; Mg</td>
			<td>PAA LABORATORIES LTD</td>
			<td>H15-011</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;">Myco trace</td>
			<td>PAA LABORATORIES LTD</td>
			<td>Q052-020</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;">Dimethyl sulfoxide (DMSO)</td>
			<td>SIGMA</td>
			<td>D2650</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;"></td>
			<td></td>
			<td></td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;">immunofluorescence</td>
			<td></td>
			<td></td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;">Normal goat serum</td>
			<td>PAA LABORATORIES LTD</td>
			<td>B11-035</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;">Polyethylene glycol p-(1,1,3,3-tetramethylbutyl)-phenyl ether</td>
			<td>SIGMA-ALDRICH CO LTD</td>
			<td>T8787</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;">Mouse anti Nestin</td>
			<td>Abcam</td>
			<td>ab11306</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;">Rabbit anti GFAP</td>
			<td>DAKO</td>
			<td>203344</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;">Mouse anti Histone H3 (phospho S10)&#160;</td>
			<td>Abcam</td>
			<td>ab14955</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;">Rabbit anti MAP-2</td>
			<td>Abcam</td>
			<td>ab32454</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;">Rat anti MBP</td>
			<td>AbD SEROTEC</td>
			<td>MCA409S</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;">Anti-O4 Antibody, clone 81 | MAB345</td>
			<td>Millipore</td>
			<td>MAB345</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;">DAPI</td>
			<td>Invitrogen</td>
			<td>D1306</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;">Mounting solution</td>
			<td>DAKO</td>
			<td>S3023</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;"></td>
			<td></td>
			<td></td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;">EAE</td>
			<td></td>
			<td></td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;">Freund&#39;s Adjuvant Incomplete</td>
			<td>SIGMA-ALDRICH CO LTD</td>
			<td>F5506</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;">Mycobacterium tuberculosis&#160;</td>
			<td>DIFCO</td>
			<td>H37Ra</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;">MOG(35&#8211;55)&#160;</td>
			<td>Espikem</td>
			<td></td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;">Pertussis toxin</td>
			<td>List Biological Laboratories</td>
			<td>181</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;"></td>
			<td></td>
			<td></td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;">Tissue processing</td>
			<td></td>
			<td></td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;">Iris scissor straight</td>
			<td>Fine Sciences Tolls</td>
			<td>14060-09</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;">Blunt/bended forceps</td>
			<td>Fine Sciences Tolls</td>
			<td>11080-02</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;">Brain slicer</td>
			<td>Zivic instruments</td>
			<td>BSMAS005-1</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;">Surgical blades</td>
			<td>Swann-Morton</td>
			<td>324</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;">P200, P1000 pipettes</td>
			<td></td>
			<td></td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;">Ketamine (Vetalar)</td>
			<td style="width:300px;">Boehringer Ingelheim</td>
			<td>01LC0030&#160;&#160;</td>
			<td style="width:272px;"></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;">Xylazine (Rompun)</td>
			<td>Bayer</td>
			<td>32371</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;">Stereotaxic frame</td>
			<td>KOPF</td>
			<td>Model 900</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;">Hamilton syringe</td>
			<td>Hamilton</td>
			<td>7762-04</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;">Paraformaldehyde (PFA)</td>
			<td>SIGMA</td>
			<td>158127</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;">VECTASTAIN Elite ABC Kit</td>
			<td>vector laboratories</td>
			<td>PK-6100</td>
			<td></td>
		</tr>
	</tbody>
</table>

systemic injection of neural stem/progenitor cells in mice with chronic eae

Células tronco / progenitoras neurais (NPCs) são uma fonte de células-tronco promissor para abordagens de transplante, visando a reparação cerebral ou restauração em neurologia regenerativa. Esta directiva surgiu a partir da evidência extensa que a reparação do cérebro é alcançado após o transplante NPC focal ou sistêmica em vários modelos pré-clínicos de doenças neurológicas. Estes dados experimentais identificaram a rota de entrega célula como um dos principais obstáculos de terapias com células estaminais restauradores para doenças cerebrais que requerem avaliação urgente. Enxerto de células-tronco intraparenquimatosa representa uma abordagem lógica para essas patologias caracterizadas por lesões isoladas e acessíveis do cérebro, como lesões da medula espinhal e doença de Parkinson. Infelizmente, este princípio é aplicável mal às condições caracterizadas por uma natureza multifocal, inflamatória e disseminada (no tempo e no espaço), incluindo a esclerose múltipla (MS). Como tal, o cérebro a segmentação por sistentrega NPC émica tornou-se um protocolo invasivo e terapeuticamente eficazes de baixo para entregar células para o cérebro e espinal-medula de roedores e primatas não humanos afectados por danos inflamatória crónica experimental do sistema nervoso central (SNC). Este método alternativo de entrega célula baseia-se na pathotropism NPC, especificamente a sua capacidade inata para (i) detectar o ambiente através de moléculas de adesão de células funcionais e receptores de citocinas inflamatórias e quimiocinas; (Ii) cruzar as barreiras anatômicas vazamento após intravenosa (iv). Ou intracerebroventricular (ICV) de injecção; (Iii) se acumulam no nível do sítio perivascular múltiplo (s) do cérebro e da medula espinhal dano inflamatório; e (iv) exercer notável trófico tecidual e os efeitos de regulação do sistema imunológico em diferentes células alvo hospedeiro in vivo. Aqui vamos descrever os métodos que desenvolvemos para a iv. e &lt;em&gt; entrega icv de NPCs singênicos em camundongos com encefalomielite autoimune experimental (EAE), como modelo de desmielinização inflamatória crônica do SNC, e prevê a entrega de células-tronco sistêmica como uma técnica valiosa para o direcionamento seletivo do cérebro inflamado em neurologia regenerativa.

NPC derivação e caracterização Dissecções SVZ são realizadas em piscinas (n = 5-7 ratinhos / piscina) de 6-8 semanas de idade C57BL / 6 ratos por meio de dissociação mecânica e enzimática (Figura 1A). Depois de alguns dias de cultura em CGM, neuroesferas flutuantes começar a formar (Figuras 1A e 1B). Esferas primárias são recolhidos e mecanicamente passada casa 4-5 DIV. Após passagem, o número de células vivas e mortas são verificadas e os núme...

Watch this Scientific Journal Video about Systemic Injection of Neural Stem/Progenitor Cells in Mice with Chronic EAE at JoVE.com

Systemic Injection of Neural Stem/Progenitor Cells in Mice with Chronic EAE

O transplante de células-tronco / progenitoras neurais (NPCs) detém grandes promessas em neurologia regenerativa. A administração sistêmica de NPCs se transformou em baixo invasivo e muito eficaz terapeuticamente protocolo eficaz, para entregar as células-tronco no cérebro e na medula espinhal de roedores e primatas não-humanos que sofreram prejuízos inflamatória crônica experimental do sistema nervoso central.

Injeção sistêmica de células-tronco neurais / progenitoras em ratos com EAE crónica

Neural stem/precursor cells (NPCs) are a promising stem cell source for transplantation approaches aiming at brain repair or restoration in regenerative ...

systemic-injection-neural-stemprogenitor-cells-mice-with-chronic

Research

JoVE Journal

Immunology and Infection

17.5K visualizações.  University of Cambridge, UK.  O transplante de células-tronco / progenitoras neurais (NPCs) detém grandes promessas em neurologia regenerativa. A administração sistêmica de NPCs se transformou em baixo invasivo e muito eficaz terapeuticamente protocolo eficaz, para entregar as células-tronco no cérebro e na medula espinhal de roedores e primatas não-humanos que sofreram prejuízos inflamatória crônica experimental do sistema nervoso central. 

Vídeo: Systemic Injection of Neural Stem/Progenitor Cells in Mice with Chronic EAE

Identifying DNA Mutations in Purified Hematopoietic Stem/Progenitor Cells

In recent years, it has become apparent that genomic instability is tightly related to many developmental disorders, cancers, and aging. Given that stem cells are responsible for ensuring tissue homeostasis and repair throughout life, it is reasonable to hypothesize that the stem cell population is critical for preserving genomic integrity of tissues. Therefore, significant interest has arisen in assessing the impact of endogenous and environmental factors on genomic integrity in stem cells and their progeny, aiming to understand the etiology of stem-cell based diseases.
LacI transgenic mice carry a recoverable &#955;&#160;phage vector encoding the LacI reporter system, in which the LacI gene serves as the mutation reporter. The result of a mutated LacI gene is the production of &#946;-galactosidase that cleaves a chromogenic substrate, turning it blue. The LacI reporter system is carried in all cells, including stem/progenitor cells and can easily be recovered and used to subsequently infect E. coli. After incubating infected E. coli on agarose that contains the correct substrate, plaques can be scored; blue plaques indicate a mutant LacI gene, while clear plaques harbor wild-type. The frequency of blue (among clear) plaques indicates the mutant frequency in the original cell population the DNA was extracted from. Sequencing the mutant LacI gene will show the location of the mutations in the gene and the type of mutation.
The LacI transgenic mouse model is well-established as an in vivo mutagenesis assay. Moreover, the mice and the reagents for the assay are commercially available. Here we describe in detail how this model can be adapted to measure the frequency of spontaneously occurring DNA mutants in stem cell-enriched Lin-IL7R-Sca-1+cKit++(LSK) cells and other subpopulations of the hematopoietic system.

Here we describe an in vivo mutagenesis assay for small numbers of purified hematopoietic cells using the LacI transgenic mouse model.&#160;The LacI gene can be isolated to determine the frequency, location, and type of DNA mutants&#160;spontaneously arisen or after exposure to genotoxins.

A identificação de DNA Mutações em Purificada-Tronco Hematopoéticas / células progenitoras

In recent years, it has become apparent that genomic instability is tightly related to many developmental disorders, cancers, and aging. Given that stem ...

Imunologia e Infecção

Long Term Chronic Pseudomonas aeruginosa Airway Infection in Mice

A mouse model of chronic airway infection is a key asset in cystic fibrosis (CF) research, although there are a number of concerns regarding the model itself. Early phases of inflammation and infection have been widely studied by using the Pseudomonas aeruginosa agar-beads mouse model, while only few reports have focused on the long-term chronic infection in vivo. The main challenge for long term chronic infection remains the low bacterial burden by P. aeruginosa and the low percentage of infected mice weeks after challenge, indicating that bacterial cells are progressively cleared by the host.
This paper presents a method for obtaining efficient long-term chronic infection in mice. This method is based on the embedding of the P. aeruginosa clinical strains in the agar-beads in vitro, followed by intratracheal instillation in C57Bl/6NCrl mice. Bilateral lung infection is associated with several measurable read-outs including weight loss, mortality, chronic infection, and inflammatory response. The P. aeruginosa RP73 clinical strain was preferred over the PAO1 reference laboratory strain since it resulted in a comparatively lower mortality, more severe lesions, and higher chronic infection. P. aeruginosa colonization may persist in the lung for over three months. Murine lung pathology resembles that of CF patients with advanced chronic pulmonary disease.
This murine model most closely mimics the course of the human disease and can be used both for studies on the pathogenesis and for the evaluation of novel therapies.

Long Term Chronic Pseudomonas aeruginosa Airway Infection in Mice

We describe the agar-beads method to establish persistent long-term chronic Pseudomonas aeruginosa airway infection in the mouse model.

Crônica de Longo Prazo<em&gt; Pseudomonas aeruginosa</em&gt; Infecção das vias aéreas em ratos

A mouse model of chronic airway infection is a key asset in cystic fibrosis (CF) research, although there are a number of concerns regarding the model ...

Myelin Oligodendrocyte Glycoprotein (MOG35-55) Induced Experimental Autoimmune Encephalomyelitis (EAE) in C57BL/6 Mice

Multiple sclerosis is a chronic neuroinflammatory demyelinating disorder of the central nervous system with a strong neurodegenerative component. While the exact etiology of the disease is yet unclear, autoreactive T lymphocytes are thought to play a central role in its pathophysiology. MS therapy is only partially effective so far and research efforts continue to expand our knowledge on the pathophysiology of the disease and to develop novel treatment strategies. Experimental autoimmune encephalomyelitis (EAE) is the most common animal model for MS sharing many clinical and pathophysiological features. There is a broad diversity of EAE models which reflect different clinical, immunological and histological aspects of human MS. Actively-induced EAE in mice is the easiest inducible model with robust and replicable results. It is especially suited for investigating the effects of drugs or of particular genes by using transgenic mice challenged by autoimmune neuroinflammation. Therefore, mice are immunized with CNS homogenates or peptides of myelin proteins. Due to the low immunogenic potential of these peptides, strong adjuvants are used. EAE susceptibility and phenotype depends on the chosen antigen and rodent strain. C57BL/6 mice are the commonly used strain for transgenic mouse construction and respond among others to myelin oligodendrocyte glycoprotein (MOG). The immunogenic epitope MOG35-55 is suspended in complete Freund's adjuvant (CFA) prior to immunization and pertussis toxin is applied on the day of immunization and two days later. Mice develop a "classic" self-limited monophasic EAE with ascending flaccid paralysis within 9-14 days after immunization. Mice are evaluated daily using a clinical scoring system for 25-50 days. Special considerations for care taking of animals with EAE as well as potential applications and limitations of this model are discussed.

Myelin Oligodendrocyte Glycoprotein MOG35-55 Induced Experimental Autoimmune Encephalomyelitis EAE in C57BL/6 Mice

Experimental autoimmune encephalomyelitis (EAE) is an established animal model of multiple sclerosis. C57BL/6 mice are immunized with myelin oligodendrocyte glycoprotein (MOG) peptide 35-55 (MOG35-55), resulting in an ascending flaccid paralysis caused by autoreactive immune cells in the central nervous system. Protocols for disease induction and monitoring will be discussed.

Mielina Oligodendrocyte glicoproteína (MOG<sub&gt; 35-55</sub&gt;) Induzida Encefalomielite Auto-imune Experimental (EAE) em murganhos C57BL / 6

Multiple sclerosis is a chronic neuroinflammatory demyelinating disorder of the central nervous system with a strong neurodegenerative component. While ...

A Mouse Model for Pathogen-induced Chronic Inflammation at Local and Systemic Sites

Chronic inflammation is a major driver of pathological tissue damage and a unifying characteristic of many chronic diseases in humans including neoplastic, autoimmune, and chronic inflammatory diseases. Emerging evidence implicates pathogen-induced chronic inflammation in the development and progression of chronic diseases with a wide variety of clinical manifestations. Due to the complex and multifactorial etiology of chronic disease, designing experiments for proof of causality and the establishment of mechanistic links is nearly impossible in humans. An advantage of using animal models is that both genetic and environmental factors that may influence the course of a particular disease can be controlled. Thus, designing relevant animal models of infection represents a key step in identifying host and pathogen specific mechanisms that contribute to chronic inflammation.
Here we describe a mouse model of pathogen-induced chronic inflammation at local and systemic sites following infection with the oral pathogen Porphyromonas gingivalis, a bacterium closely associated with human periodontal disease. Oral infection of specific-pathogen free mice induces a local inflammatory response resulting in destruction of tooth supporting alveolar bone, a hallmark of periodontal disease. In an established mouse model of atherosclerosis, infection with P. gingivalis accelerates inflammatory plaque deposition within the aortic sinus and innominate artery, accompanied by activation of the vascular endothelium, an increased immune cell infiltrate, and elevated expression of inflammatory mediators within lesions. We detail methodologies for the assessment of inflammation at local and systemic sites. The use of transgenic mice and defined bacterial mutants makes this model particularly suitable for identifying both host and microbial factors involved in the initiation, progression, and outcome of disease. Additionally, the model can be used to screen for novel therapeutic strategies, including vaccination and pharmacological intervention.

Animal models have proven to be invaluable tools in defining host and pathogen specific mechanisms that contribute to the development of chronic inflammation. Here we describe a mouse model of oral infection with the human pathogen Porphyromonas gingivalis and detail methodologies to assess the progression of inflammation at local and systemic sites.

Um modelo de rato para induzida por patógeno inflamação crônica no local e sistêmica Sites

Chronic inflammation is a major driver of pathological tissue damage and a unifying characteristic of many chronic diseases in humans including ...

Phenotypic and Functional Analysis of Activated Regulatory T Cells Isolated from Chronic Lymphocytic Choriomeningitis Virus-infected Mice

Regulatory T (Treg) cells, which express Foxp3 as a transcription factor, are subsets of CD4+ T cells. Treg cells play crucial roles in immune tolerance and homeostasis maintenance by regulating the immune response. The primary role of Treg cells is to suppress the proliferation of effector T (Teff) cells and the production of cytokines such as IFN-&#947;, TNF-&#945;, and IL-2. It has been demonstrated that Treg cells&#39; ability to inhibit the function of Teff cells is enhanced during persistent pathogen infection and cancer development. To clarify the function of Treg cells under resting or inflamed conditions, a variety of in vitro suppression assays using mouse or human Treg cells have been devised. The main aim of this study is to develop a method to compare the differences in phenotype and suppressive function between resting and activated Treg cells. To isolate activated Treg cells, mice were infected with lymphocytic choriomeningitis virus (LCMV) clone 13 (CL13), a chronic strain of LCMV. Treg cells isolated from the spleen of LCMV CL13-infected mice exhibited both the activated phenotype and enhanced suppressive activity compared with resting Treg cells isolated from na&#239;ve mice. Here, we describe the basic protocol for ex vivo phenotype analysis to distinguish activated Treg cells from resting Treg cells. Furthermore, we describe a protocol for the measurement of the suppressive activity of fully activated Treg cells.

Here, we describe a protocol to analyze the phenotype of regulatory T (Treg) cells isolated from na&#239;ve and chronic lymphocytic choriomeningitis virus-infected mice. In addition, we provide a process to evaluate the suppressive activity of the Treg cells.

Fenotípica e análise funcional de células reguladoras T ativadas isolados de ratinhos infectados com o vírus da coriomeningite linfocítica crônica

Regulatory T (Treg) cells, which express Foxp3 as a transcription factor, are subsets of CD4+ T cells. Treg cells play crucial roles in immune tolerance ...

Analysis of Lymphocyte Extravasation Using an In Vitro Model of the Human Blood-brain Barrier

Lymphocyte extravasation into the central nervous system (CNS) is critical for immune surveillance. Disease-related alterations of lymphocyte extravasation might result in pathophysiological changes in the CNS. Thus, investigation of lymphocyte migration into the CNS is important to understand inflammatory CNS diseases and to develop new therapy approaches. Here we present an in vitro model of the human blood-brain barrier to study lymphocyte extravasation. Human brain microvascular endothelial cells (HBMEC) are confluently grown on a porous polyethylene terephthalate transwell insert to mimic the endothelium of the blood-brain barrier. Barrier function is validated by zonula occludens immunohistochemistry, transendothelial electrical resistance (TEER) measurements as well as analysis of evans blue permeation. This model allows investigation of the diapedesis of rare lymphocyte subsets such as CD56brightCD16dim/- NK cells. Furthermore, the effects of other cells, cytokines and chemokines, disease-related alterations, and distinct treatment regimens on the migratory capacity of lymphocytes can be studied. Finally, the impact of inflammatory stimuli as well as different treatment regimens on the endothelial barrier can be analyzed.

Analysis of Lymphocyte Extravasation Using an In Vitro Model of the Human Blood-brain Barrier

Here, we describe a human blood-brain barrier model enabling to investigate lymphocyte transmigration into the central nervous system in vitro.

Análise de Linfócitos extravasamento Usando um<em&gt; In Vitro</em&gt; Modelo do Sangue-Cérebro humano Barreira

Lymphocyte extravasation into the central nervous system (CNS) is critical for immune surveillance. Disease-related alterations of lymphocyte ...

A Chronic Autoimmune Dry Eye Rat Model with Increase in Effector Memory T Cells in Eyeball Tissue

Dry eye disease is a very common condition that causes morbidity and healthcare burden and decreases the quality of life. There is a need for a suitable dry eye animal model to test novel therapeutics to treat autoimmune dry eye conditions. This protocol describes a chronic autoimmune dry eye rat model. Lewis rats were immunized with an emulsion containing lacrimal gland extract, ovalbumin, and complete Freund&#39;s adjuvant. A second immunization with the same antigens in incomplete Freund&#39;s adjuvant was administered two weeks later. These immunizations were administered subcutaneously at the base of the tail. To boost the immune response at the ocular surface and lacrimal glands, lacrimal gland extract and ovalbumin were injected into the forniceal subconjunctiva and lacrimal glands 6 weeks after the first immunization. The rats developed dry eye features, including reduced tear production, decreased tear stability, and increased corneal damage. Immune profiling by flow cytometry showed a preponderance of CD3+ effector memory T cells in the eyeball.

This report describes a method to induce chronic experimental autoimmune dry eye in Lewis rats through immunization with an emulsion of rat lacrimal gland extract, ovalbumin, and complete Freund's adjuvant, followed by the injection of lacrimal gland extract and ovalbumin into the forniceal subconjunctiva and lacrimal glands six weeks later.

Um modelo crônico de Rato de olho seco autoimune com aumento de células de memória E Effect no tecido do globo ocular

Dry eye disease is a very common condition that causes morbidity and healthcare burden and decreases the quality of life. There is a need for a suitable ...

Adoptive Immunotherapy of iNKT Cells in Glucose-6-Phosphate Isomerase (G6PI)-Induced RA Mice

Rheumatoid arthritis (RA) is a complex chronic inflammatory autoimmune disease. The pathogenesis of the disease is related to invariant natural killer T (iNKT) cells. Patients with active RA present fewer iNKT cells, defective cell function, and excessive polarization of Th1. In this study, an RA animal model was established using a mixture of hGPI325-339 and hGPI469-483 peptides. The iNKT cells were obtained by in vivo induction and in vitro purification, followed by infusion into RA mice for adoptive immunotherapy. The in vivo imaging system (IVIS) tracking revealed that iNKT cells were mainly distributed in the spleen and liver. On day 12 after cell therapy, the disease progression slowed down significantly, the clinical symptoms were alleviated, the abundance of iNKT cells in the thymus increased, the proportion of iNKT1 in the thymus decreased, and the levels of TNF-&#945;, IFN-&#947;, and IL-6 in the serum decreased. Adoptive immunotherapy of iNKT cells restored the balance of immune cells and corrected the excessive inflammation of the body.

Adoptive Immunotherapy of iNKT Cells in Glucose-6-Phosphate Isomerase G6PI-Induced RA Mice

This protocol uses G6PI mixed peptides to construct rheumatoid arthritis models that are closer to that of human rheumatoid arthritis in CD4+ T cells and cytokines. High purity invariant natural killer T cells (mainly iNKT2) with specific phenotypes and functions were obtained by in vivo induction and in vitro purification for adoptive immunotherapy.

Imunoterapia adotiva de células iNKT em Isomerase Isomerase Induzida de Glicose-6-Fosfato (G6PI)-Induzido RaMice

Rheumatoid arthritis (RA) is a complex chronic inflammatory autoimmune disease. The pathogenesis of the disease is related to invariant natural killer T ...

Blocking Lymph Flow by Suturing Afferent Lymphatic Vessels in Mice

Lymphatic vessels are critical in maintaining tissue fluid balance and optimizing immune protection by transporting antigens, cytokines, and cells to draining lymph nodes (LNs). Interruption of lymph flow is an important method when studying the function of lymphatic vessels. The afferent lymphatic vessels from the murine footpad to the popliteal lymph nodes (pLNs) are well-defined as the only routes for lymph drainage into the pLNs. Suturing these afferent lymphatic vessels can selectively prevent lymph flow to the pLNs. This method allows for interference in lymph flow with minimal damage to the lymphatic endothelial cells in the draining pLN, the afferent lymphatic vessels, as well as other lymphatic vessels around the area. This method has been used to study how lymph impacts high endothelial venules (HEV) and chemokine expression in the LN, and how lymph flows through the adipose tissue surrounding the LN in the absence of functional lymphatic vessels. With the growing recognition of the importance of lymphatic function, this method will have broader applications to further unravel the function of lymphatic vessels in regulating the LN microenvironment and immune responses.

A protocol to block lymph flow by surgical suturing of afferent lymphatic vessels is presented.

Bloqueando o fluxo linfático suturing afferent vasos linfáticos em camundongos

Lymphatic vessels are critical in maintaining tissue fluid balance and optimizing immune protection by transporting antigens, cytokines, and cells to ...

A Minimally Invasive, Accurate, and Efficient Technique for Intrathymic Injection in Mice

Intrathymic injection in mouse models is an important technique for studying thymic and immune function, including genetic and acquired T cell disorders. This requires methods for the direct deposition of reagents and/or cells into the thymus of living mice. Traditional methods of intrathymic injection include thoracic surgery or minimally invasive percutaneous blind injections, both of which have significant limitations. Ultra-high frequency ultrasound imaging devices have made image-guided percutaneous injections possible in mice, greatly improving the injection accuracy of the percutaneous injection approach and enabling the injection of smaller targets. However, image-guided injections rely on the utilization of an integrated rail system, making this a rigid and time-consuming procedure. A unique, safe, and efficient method for percutaneous intrathymic injections in mice is presented here, eliminating reliance on the rail system for injections. The technique relies on using a high-resolution micro-ultrasound unit to image the mouse thymus noninvasively. Using a free-hand technique, a radiologist can place a needle tip directly into the mouse thymus under sonographic guidance. Mice are cleaned and anesthetized before imaging. For an experienced radiologist adept at ultrasound-guided procedures, the learning period for the stated technique is quite short, typically within one session. The method has a low morbidity and mortality rate for the mice and is much faster than current mechanically assisted techniques for percutaneous injection. It allows the investigator to efficiently perform precise and reliable percutaneous injections of thymuses of any size (including very small organs such as the thymus of aged or immunodeficient mice) with minimal stress on the animal. This method enables the injection of individual lobes if desired and facilitates large-scale experiments due to the time-saving nature of the procedure.

The present protocol describes an interventional radiology procedure established for intrathymic injection in mice to avoid the risk of open surgery and improve the accuracy of blind percutaneous injections.

Uma técnica minimamente invasiva, precisa e eficiente para injeção intratímica em camundongos

Intrathymic injection in mouse models is an important technique for studying thymic and immune function, including genetic and acquired T cell disorders. ...