Name: bioluminescence imaging of neuroinflammation in transgenic mice after peripheral inoculation of alpha-synuclein fibrils
Uploaded: 2017-04-13T13:00:00
Description: Watch this Scientific Journal Video about Bioluminescence Imaging of Neuroinflammation in Transgenic Mice After Peripheral Inoculation of Alpha-Synuclein Fibrils at JoVE.com

Os autores agradecem Olga Sharma, Theresa Hundt, e os funcionários das microscopia e animais instalações DZNE para suporte técnico.

Todos os procedimentos, incluindo animais foram realizados com a aprovação da comissão de proteção animal de Rhine-Westphalia Agência Norte Estadual do Meio Ambiente (LANUV). Os animais foram alojados e tratados de acordo com condições padrão com um 12 h ciclo de luz / escuro e acesso livre a alimento e água. 1. Modelo Animal <ol><li> Intercross hemizigótica Tg (GFAP -Luc +/-) ratinhos com ratinhos hemizigótica Tg (M83 +/-) para gerar hemizigótic...

<ol>
	<li>Aguzzi, A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Cell+biology:+Beyond+the+prion+principle.">Cell biology: Beyond the prion principle.</a> Nature. 459 (7249), 924-925 (2009).</li><li>Kordower, J. H., Chu, Y., Hauser, R. A., Freeman, T. B., Olanow, C. W. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Lewy+body-like+pathology+in+long-term+embryonic+nigral+transplants+in+Parkinson's+disease.">Lewy body-like pathology in long-term embryonic nigral transplants in Parkinson's disease.</a> Nat Med. 14 (5), 504-506 (2008).</li><li>Li, J. Y., 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=Lewy+bodies+in+grafted+neurons+in+subjects+with+Parkinson's+disease+suggest+host-to-graft+disease+propagation.">Lewy bodies in grafted neurons in subjects with Parkinson's disease suggest host-to-graft disease propagation.</a> Nat Med. 14 (5), 501-503 (2008).</li><li>Hansen, 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=alpha-Synuclein+propagates+from+mouse+brain+to+grafted+dopaminergic+neurons+and+seeds+aggregation+in+cultured+human+cells.">alpha-Synuclein propagates from mouse brain to grafted dopaminergic neurons and seeds aggregation in cultured human cells.</a> J Clin Invest. 121 (2), 715-725 (2011).</li><li>Masuda-Suzukake, 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=Prion-like+spreading+of+pathological+alpha-synuclein+in+brain.">Prion-like spreading of pathological alpha-synuclein in brain.</a> Brain. 136 (4), 1128-1138 (2013).</li><li>Holmqvist, 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=Direct+evidence+of+Parkinson+pathology+spread+from+the+gastrointestinal+tract+to+the+brain+in+rats.">Direct evidence of Parkinson pathology spread from the gastrointestinal tract to the brain in rats.</a> Acta Neuropathol. 128 (6), 805-820 (2014).</li><li>Luk, K. 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=Pathological+alpha-synuclein+transmission+initiates+Parkinson-like+neurodegeneration+in+nontransgenic+mice.">Pathological alpha-synuclein transmission initiates Parkinson-like neurodegeneration in nontransgenic mice.</a> Science. 338 (6109), 949-953 (2012).</li><li>Sacino, A. 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=Induction+of+CNS+alpha-synuclein+pathology+by+fibrillar+and+non-amyloidogenic+recombinant+alpha-synuclein.">Induction of CNS alpha-synuclein pathology by fibrillar and non-amyloidogenic recombinant alpha-synuclein.</a> Acta Neuropathol Commun. 1, 38 (2013).</li><li>Sacino, A. 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=Intramuscular+injection+of+alpha-synuclein+induces+CNS+alpha-synuclein+pathology+and+a+rapid-onset+motor+phenotype+in+transgenic+mice.">Intramuscular injection of alpha-synuclein induces CNS alpha-synuclein pathology and a rapid-onset motor phenotype in transgenic mice.</a> Proc Natl Acad Sci U S A. 111 (29), 10732-10737 (2014).</li><li>Mougenot, A. L., 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=Prion-like+acceleration+of+a+synucleinopathy+in+a+transgenic+mouse+model.">Prion-like acceleration of a synucleinopathy in a transgenic mouse model.</a> Neurobiol Aging. 33 (9), 2225-2228 (2012).</li><li>Bartz, J. C., Kincaid, A. E., Bessen, R. A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Rapid+prion+neuroinvasion+following+tongue+infection.">Rapid prion neuroinvasion following tongue infection.</a> J Virol. 77 (1), 583-591 (2003).</li><li>Tamg&#252;ney, G., 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=Measuring+prions+by+bioluminescence+imaging.">Measuring prions by bioluminescence imaging.</a> Proc Natl Acad Sci U S A. 106 (35), 15002-15006 (2009).</li><li>Watts, J. 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=Transmission+of+multiple+system+atrophy+prions+to+transgenic+mice.">Transmission of multiple system atrophy prions to transgenic mice.</a> Proc Natl Acad Sci U S A. 110 (48), 19555-19560 (2013).</li><li>Breid, 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=Neuroinvasion+of+alpha-Synuclein+Prionoids+after+Intraperitoneal+and+Intraglossal+Inoculation.">Neuroinvasion of alpha-Synuclein Prionoids after Intraperitoneal and Intraglossal Inoculation.</a> J Virol. 90 (20), 9182-9193 (2016).</li><li>Giasson, B. I., 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=Neuronal+alpha-synucleinopathy+with+severe+movement+disorder+in+mice+expressing+A53T+human+alpha-synuclein.">Neuronal alpha-synucleinopathy with severe movement disorder in mice expressing A53T human alpha-synuclein.</a> Neuron. 34 (4), 521-533 (2002).</li><li>Zhu, L., 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=Non-invasive+imaging+of+GFAP+expression+after+neuronal+damage+in+mice.">Non-invasive imaging of GFAP expression after neuronal damage in mice.</a> Neurosci Lett. 367 (2), 210-212 (2004).</li><li>Bernis, M. E., 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=Prion-like+propagation+of+human+brain-derived+alpha-synuclein+in+transgenic+mice+expressing+human+wild-type+alpha-synuclein.">Prion-like propagation of human brain-derived alpha-synuclein in transgenic mice expressing human wild-type alpha-synuclein.</a> Acta Neuropathol Commun. 3 (1), 75 (2015).</li><li>Gunther, 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=Clinical+testing+and+spinal+cord+removal+in+a+mouse+model+for+amyotrophic+lateral+sclerosis+(ALS).">Clinical testing and spinal cord removal in a mouse model for amyotrophic lateral sclerosis (ALS).</a> J Vis Exp. (61), (2012).</li><li>Jackson-Lewis, V., Przedborski, S. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Protocol+for+the+MPTP+mouse+model+of+Parkinson's+disease.">Protocol for the MPTP mouse model of Parkinson's disease.</a> Nat Protoc. 2 (1), 141-151 (2007).</li><li>Mathews, S. T., Plaisance, E. P., Kim, T. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Imaging+systems+for+westerns:+chemiluminescence+vs.+infrared+detection.">Imaging systems for westerns: chemiluminescence vs. infrared detection.</a> Methods Mol Biol. 536, 499-513 (2009).</li><li>Kim, 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=Exposure+to+bacterial+endotoxin+generates+a+distinct+strain+of+alpha-synuclein+fibril.">Exposure to bacterial endotoxin generates a distinct strain of alpha-synuclein fibril.</a> Sci Rep. 6, 30891 (2016).</li><li>Keller, A. F., Gravel, M., Kriz, J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Live+imaging+of+amyotrophic+lateral+sclerosis+pathogenesis:+disease+onset+is+characterized+by+marked+induction+of+GFAP+in+Schwann+cells.">Live imaging of amyotrophic lateral sclerosis pathogenesis: disease onset is characterized by marked induction of GFAP in Schwann cells.</a> Glia. 57 (10), 1130-1142 (2009).</li><li>St&#246;hr, J., 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=Distinct+synthetic+Abeta+prion+strains+producing+different+amyloid+deposits+in+bigenic+mice.">Distinct synthetic Abeta prion strains producing different amyloid deposits in bigenic mice.</a> Proc Natl Acad Sci U S A. , (2014).</li><li>Luk, K. 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=Intracerebral+inoculation+of+pathological+alpha-synuclein+initiates+a+rapidly+progressive+neurodegenerative+alpha-synucleinopathy+in+mice.">Intracerebral inoculation of pathological alpha-synuclein initiates a rapidly progressive neurodegenerative alpha-synucleinopathy in mice.</a> J Exp Med. 209 (5), 975-986 (2012).</li><li>Recasens, 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=Lewy+body+extracts+from+Parkinson+disease+brains+trigger+alpha-synuclein+pathology+and+neurodegeneration+in+mice+and+monkeys.">Lewy body extracts from Parkinson disease brains trigger alpha-synuclein pathology and neurodegeneration in mice and monkeys.</a> Ann Neurol. 75 (3), 351-362 (2014).</li><li>Sacino, A. 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=Induction+of+CNS+alpha-synuclein+pathology+by+fibrillar+and+non-amyloidogenic+recombinant+alpha-synuclein.">Induction of CNS alpha-synuclein pathology by fibrillar and non-amyloidogenic recombinant alpha-synuclein.</a> Acta Neuropathol Commun. 1 (1), 38 (2013).</li><li>Peelaerts, 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=alpha-Synuclein+strains+cause+distinct+synucleinopathies+after+local+and+systemic+administration.">alpha-Synuclein strains cause distinct synucleinopathies after local and systemic administration.</a> Nature. 522 (7556), 340-344 (2015).</li></ol>

Injecção periférica de fibrilas-sinucleína alfa no peritoneu de Tg (M83 +/-: GFAP -Luc +/-) ratinhos representa um método fácil para induzir a doença neurológica acompanhada por neuroinflamao recapitular características importantes de sinucleinopatias. Da mesma forma, a injecção língua representa uma outra via para neuroinvasão por prionoids alfa-sinucleína em ratinhos transgénicos, mas é menos eficiente. Escolhemos para terminar nossas experiências em 420 dias após a inj...

Existe evidência crescente de que o alfa-sinucleína tem características que são semelhantes às da proteína prião, em particular na sua capacidade de se auto-propagam semente e enrolamento incorrecto entre as células e ao longo de caminhos neuronais. Esta propriedade de alfa-sinucleína é também referido como &#39;prião de tipo&#39; ou &#39;prionoid&#39;, e é suportada por observações em experiências de transplantação, o que sugere a transmissibilidade do enrolamento incorrecto alfa-sinucleína a partir de neurónios doentes para recém-transplantados neurónios saudáveis 1, 2 , 3, 4. Também injecção directa de enrolamento incorrecto alfa-sinucleína no cérebro ou da periferia, por exemplo, o músculo do membro posterior ou parede intestinal, resulta numa disseminação da patologia alfa-sinucleína a partes distais do SNC 5, 6, 7, &lt;sup class = &quot;xref&quot;&gt; 8, 9, 10. Analisou-se a transmissão de prionoids alfa-sinucleína por vias periféricas em mais detalhe e dirigiu-se à questão de saber se misfolded alfa-sinucleína pode neuroinvade do SNC após uma única injecção intraperitoneal ou intraglossal, uma característica que tinha sido previamente demonstrado para priões, mas não para alfa- misfolded sinucleína. Após a injecção de priões para a língua, neuroinvasão do SNC é alcançada através de propagação ao longo do nervo hipoglosso da lingueta que conduz para o núcleo do nervo hipoglosso, que está localizado no tronco cerebral 11. Como um modelo de ratinho que escolheu Tg (M83 +/-: GFAP -Luc +/-) murganhos que sobre-expressam o mutante A53T de alfa-sinucleína humano a partir do promotor do prião, e luciferase de pirilampo sob o controlo de um promotor GFAP para monitorizar a activação de astrócitos pela bioluminescência, como mostrado anteriormente no cérebro deprião-infectados ratinhos 12. Em nossas mãos bigenic Tg (M83 +/-: GFAP -Luc +/-) ratos não desenvolveram a doença até 23 meses de idade, como tem sido demonstrado por outros 13. Uma única injecção de fibrilas-sinucleína alfa humanos através da rota ou intraglossal induzida doença neurológica intraperitoneal com patologia nos cérebros e medulas espinhais de Tg (M83 +/-: GFAP -Luc +/-) murganhos que suportam a hipótese de que prionoids alfa-sinucleína compartilham características importantes com priões 14.

<table border="1" fo:keep-together.within-page="1" fo:keep-with-next.within-page="always">
	<tbody>
		<tr>
			<td>anti-actin antibody</td>
			<td>Merck Millipore</td>
			<td>MAB1501</td>
			<td></td>
		</tr>
		<tr>
			<td>anti-alpha-synuclein, phospho S129 antibody [pSyn#64]</td>
			<td>Wako</td>
			<td>015-25191</td>
			<td></td>
		</tr>
		<tr>
			<td>anti-alpha-synuclein, phospho S129 antibody [EP1536Y]</td>
			<td>Abcam</td>
			<td>ab51253</td>
			<td></td>
		</tr>
		<tr>
			<td>anti-GFAP antibody</td>
			<td>Dako</td>
			<td>Z0334 01</td>
			<td></td>
		</tr>
		<tr>
			<td>anti-IBA-1 antibody</td>
			<td>Wako</td>
			<td>019-19741</td>
			<td></td>
		</tr>
		<tr>
			<td>anti-Sequestosome-1 (p62) antibody</td>
			<td>Proteintech</td>
			<td>18420-1-AP</td>
			<td></td>
		</tr>
		<tr>
			<td>anti-ubiquitin antibody [Ubi-1]</td>
			<td>Merck Millipore</td>
			<td>MAB1510</td>
			<td></td>
		</tr>
		<tr>
			<td>Phosphate-buffered saline (PBS)</td>
			<td>Invitrogen</td>
			<td>14190169</td>
			<td></td>
		</tr>
		<tr>
			<td>Ketamine&#160;</td>
			<td>Ratiopharm</td>
			<td></td>
			<td>100 mg/kg</td>
		</tr>
		<tr>
			<td>Xylazine</td>
			<td>Ratiopharm</td>
			<td></td>
			<td>10 mg/kg</td>
		</tr>
		<tr>
			<td>27-gauge syringe</td>
			<td>VWR</td>
			<td>613-4900</td>
			<td></td>
		</tr>
		<tr>
			<td>Isoflurane&#160;</td>
			<td>Piramal Healthcare</td>
			<td>PZN&#160; 4831850</td>
			<td></td>
		</tr>
		<tr>
			<td>Depilatory cream</td>
			<td>Veet</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Secureline lab marker&#160;</td>
			<td>Neolab</td>
			<td>25040</td>
			<td></td>
		</tr>
		<tr>
			<td>D-luciferin potassium salt</td>
			<td>Acris</td>
			<td>LK10000</td>
			<td>30 mg/mL stock solution</td>
		</tr>
		<tr>
			<td>Thermomixer</td>
			<td>Eppendorf</td>
			<td>5776671</td>
			<td></td>
		</tr>
		<tr>
			<td>Sonopuls Mini20 sonicator</td>
			<td>Bandelin</td>
			<td>3648</td>
			<td></td>
		</tr>
		<tr>
			<td>IVIS Lumina II imaging system</td>
			<td>PerkinElmer</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Living Image 3.0 Software</td>
			<td>PerkinElmer</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Tg(M83+/-) mice or B6;C3-Tg(Prnp-SNCA*A53T)83Vle/J mice</td>
			<td>The Jackson Laboratory</td>
			<td>004479</td>
			<td></td>
		</tr>
		<tr>
			<td>Standard pattern forceps</td>
			<td>Fine Science Tools</td>
			<td>11000-16</td>
			<td></td>
		</tr>
		<tr>
			<td>Narrow pattern forceps</td>
			<td>Fine Science Tools</td>
			<td>11002-12</td>
			<td></td>
		</tr>
		<tr>
			<td>N-laurylasarcosyl</td>
			<td>Sigma</td>
			<td>L5125-100G</td>
			<td></td>
		</tr>
		<tr>
			<td>Optima Max-XP ultracentrifuge&#160;</td>
			<td>Beckman Coulter</td>
			<td></td>
			<td>TLA-110 rotor&#160;</td>
		</tr>
		<tr>
			<td>Thickwall polycarbonate tubes</td>
			<td>Beckman Coulter</td>
			<td>362305</td>
			<td></td>
		</tr>
		<tr>
			<td>NuPAG Novex 4-12% Bis-Tris Midi Protein Gels</td>
			<td>Thermo Fisher Scientific</td>
			<td>WG1401BOX</td>
			<td></td>
		</tr>
		<tr>
			<td>HRP conjugated antibody</td>
			<td>Cayman</td>
			<td>Cay10004301-1</td>
			<td></td>
		</tr>
		<tr>
			<td>IR Dye 680 conjugated antibody&#160;</td>
			<td>LI-COR Biosciences</td>
			<td>926-68070</td>
			<td></td>
		</tr>
		<tr>
			<td>SuperSignal West Dura Extended Duration Substrate</td>
			<td>Thermo Fisher Scientific</td>
			<td>34075</td>
			<td></td>
		</tr>
		<tr>
			<td>Stella 3200 imaging system</td>
			<td>Raytest</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Odyssey infrared imaging system&#160;</td>
			<td>LI-COR Biosciences</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Tween 20&#160;</td>
			<td>MP Biomedicals</td>
			<td>TWEEN201</td>
			<td></td>
		</tr>
		<tr>
			<td>Triton X-100</td>
			<td>Sigma</td>
			<td>SA/T8787</td>
			<td></td>
		</tr>
		<tr>
			<td>Immobilon-FL PVDF membrane</td>
			<td>Merck Millipore</td>
			<td>IPFL00010</td>
			<td></td>
		</tr>
		<tr>
			<td>Xylol</td>
			<td>Sigma</td>
			<td>Roth</td>
			<td></td>
		</tr>
		<tr>
			<td>Hydrogen peroxide</td>
			<td>Sigma</td>
			<td>SA/00216763/000500</td>
			<td>working solution 3%</td>
		</tr>
		<tr>
			<td>Bovine serum albumine (BSA)&#160;</td>
			<td>Thermo Fisher Scientific</td>
			<td>A3294-100G</td>
			<td></td>
		</tr>
		<tr>
			<td>Goat serum</td>
			<td>Thermo Fisher Scientific</td>
			<td>PCN5000</td>
			<td></td>
		</tr>
		<tr>
			<td>4,6-diamidino-2-phenylindole (DAPI)</td>
			<td>Thermo Fisher Scientific</td>
			<td>D1306</td>
			<td>working dilution 1:50,000</td>
		</tr>
		<tr>
			<td>Fluoromount media&#160;</td>
			<td>Omnilab</td>
			<td>SA/F4680/000025</td>
			<td></td>
		</tr>
		<tr>
			<td>LSM700 confocal laser scanning microscope</td>
			<td>Carl Zeiss</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>HALT protease and phosphatase inhibitors</td>
			<td>Thermo Fisher Scientific&#160;</td>
			<td>10516495</td>
			<td></td>
		</tr>
		<tr>
			<td>Precellys 24-Dual homogenizer&#160;</td>
			<td>Peqlab</td>
			<td>91-PCS24D</td>
			<td></td>
		</tr>
		<tr>
			<td>Alexa Fluor 488 conjugated antibody</td>
			<td>Thermo Fisher Scientific</td>
			<td>A31619</td>
			<td></td>
		</tr>
		<tr>
			<td>Alexa Fluor 594 conjugated antibody</td>
			<td>Thermo Fisher Scientific</td>
			<td>A11005</td>
			<td></td>
		</tr>
		<tr>
			<td>Pierce&#160;BCA&#160;Protein&#160;Assay&#160;Kit</td>
			<td>Thermo Fisher Scientific</td>
			<td>10741395</td>
			<td></td>
		</tr>
		<tr>
			<td>Microtome RM2255</td>
			<td>Leica</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>LSM700 confocal laser scanning microscope</td>
			<td>Carl Zeiss</td>
			<td></td>
			<td></td>
		</tr>
	</tbody>
</table>

bioluminescence imaging of neuroinflammation in transgenic mice after peripheral inoculation of alpha-synuclein fibrils

Para estudar o comportamento de prião de tipo de enrolamento incorrecto alfa-sinucleína, são necessários modelos de murganho que permite a transmissão rápida e simples de prionoids alfa-sinucleína, que causam neuropatologia no interior do sistema nervoso central (SNC). Aqui descrevemos que intraglossal ou injecção intraperitoneal de fibrilas-sinucleína em alfa bigenic Tg (M83 +/-: GFAP -Luc +/-) ratos, que sobre-expressam alfa-sinucleína humana com a mutação A53T a partir do promotor da proteína prião e a luciferase do pirilampo de o promotor para a proteína ácida fibrilar glial (GFAP), é suficiente para induzir doença neuropatológica. Em comparação com Tg homozigótica (M83 + / +) ratinhos que desenvolvem sintomas neurológicos graves começam com uma idade de 8 meses, heterozigótica Tg (M83 +/-: GFAP -Luc +/-) animais permanecem livres da doença espontânea até atingirem um idade de 22 meses. Interessantemente, a injeco de fibrilas-sinucleína alfa através da intraperitoneal rota induzida doença neurológica com paralisia em quatro de cinco Tg (M83 +/-: GFAP -Luc +/-) ratos com um tempo de incubação médio de 229 ± 17 dias. animais doentes mostrou depósitos graves de fosforilada alfa-sinucleína em seus cérebros e medulas espinhais. Acumulações de alfa-sinucleína foram sarcosil-insolúvel e co-localizada com ubiquitina e p62, e foram acompanhados por uma resposta inflamatória que resulta em gliose de astrócitos e microgliose. Surpreendentemente, a inoculação de fibrilas-sinucleína alfa para a língua era menos eficaz em causar doença com apenas um dos cinco animais injectados mostrando alfa-sinucleína patologia após 285 dias. Nossos resultados mostram que a inoculação por via intraglossal e mais ainda através da via intraperitoneal é adequado para induzir doença neurológica com características relevantes da sinucleinopatias em Tg (M83 +/-: GFAP -Luc +/-) camundongos. Isto fornece um novo modelo para estudar prion-como patogênese induzird por prionoids alfa-sinucleína em maior detalhe.

Injecção periférica de prionoids alfa-sinucleína através da língua ou no peritoneu induzida neuropatologia no CNS de Tg bigenic (M83 +/-: GFAP -Luc +/-) murganhos (Tabela 1 e Figura 1). Após uma única injecção intraperitoneal com fibrilas-sinucleína alfa, quatro de cinco ratinhos desenvolveram uma doença neurológica com um tempo de incubação médio de 229 ± 17 dias. Surpreendentemente, apenas um de cinco rat...

Watch this Scientific Journal Video about Bioluminescence Imaging of Neuroinflammation in Transgenic Mice After Peripheral Inoculation of Alpha-Synuclein Fibrils at JoVE.com

Bioluminescence Imaging of Neuroinflammation in Transgenic Mice After Peripheral Inoculation of Alpha-Synuclein Fibrils

Injecção periférica de fibrilas-sinucleína alfa no peritoneu ou língua de Tg (M83 +/-: GFAP -Luc +/-) ratos, que expressam alfa-sinucleína humana com a mutação A53T familiar e a luciferase do pirilampo, pode induzir a neuropatologia, incluindo neuroinflamao , em seu sistema nervoso central.

Imagem de bioluminescência de Neuroinflammation em Ratinhos Transgénicos Após inoculação periférica de alfa-sinucleína fibrilas

To study the prion-like behavior of misfolded alpha-synuclein, mouse models are needed that allow fast and simple transmission of alpha-synuclein ...

Research

JoVE Journal

Neuroscience

A Thin-skull Window Technique for Chronic Two-photon In vivo Imaging of Murine Microglia in Models of Neuroinflammation

A Thin-skull Window Technique for Chronic Two-photon In vivo Imaging of Murine Microglia in Models of Neuroinflammation

A Técnica de Janela crânio-fino para Crônica de dois fótons In vivo Imaging da Microglia murino em Modelos de Neuroinflammation

Traditionally in neuroscience, in vivo two photon imaging of the murine central nervous system has either involved the use of open-skull1,2 or ...

Neurociência

Oral Administration of Rotenone using a Gavage and Image Analysis of Alpha-synuclein Inclusions in the Enteric Nervous System

Administração oral de rotenona usando um Gavage e Análise de Imagem de Alpha-sinucleína Inclusões no sistema nervoso entérico

In Parkinson's disease (PD) patients, the associated pathology follows a characteristic pattern involving inter alia the enteric nervous system (ENS) 1,2, ...

Live Imaging of Dorsal Root Axons after Rhizotomy

Imagens ao vivo de axônios da raiz dorsal após rizotomia

The primary sensory axons injured by spinal root injuries fail to regenerate into the spinal cord, leading to chronic pain and permanent sensory loss. ...

Generation of Topically Transgenic Rats by In utero Electroporation and In vivo Bioluminescence Screening

Generation of Topically Transgenic Rats by In utero Electroporation and In vivo Bioluminescence Screening

Geração de topicamente transgênicas Rats por<em&gt; In utero</em&gt; Eletroporação e<em&gt; In vivo</em&gt; Triagem Bioluminescência

 In utero electroporation (IUE) is a technique which allows genetic modification of cells in the brain for investigating neuronal development. So far, the ...

Transplantation of Olfactory Ensheathing Cells to Evaluate Functional Recovery after Peripheral Nerve Injury

Transplante de células olfativas Ensheathing para avaliar a recuperação funcional após a lesão do nervo periférico

Olfactory ensheathing cells (OECs) are neural crest cells which allow growth and regrowth of the primary olfactory neurons. Indeed, the primary olfactory ...

Fluorescence and Bioluminescence Imaging of Subcellular Ca2+ in Aged Hippocampal Neurons

Fluorescence and Bioluminescence Imaging of Subcellular Ca2+ in Aged Hippocampal Neurons

Fluorescência e imagem de bioluminescência subcelular Ca<sup&gt; 2+</sup&gt; Aged em neurônios do hipocampo

Susceptibility to neuron cell death associated to neurodegeneration and ischemia are exceedingly increased in the aged brain but mechanisms responsible ...

Sequential Extraction of Soluble and Insoluble Alpha-Synuclein from Parkinsonian Brains

Extração seqüencial de solúveis e insolúveis alfa-sinucleína de Brains parkinsonianos

Alpha-synuclein (&#945;-syn) protein is abundantly expressed mainly within neurons, and exists in a number of different forms - monomers, tetramers, ...

Imaging Neural Activity in the Primary Somatosensory Cortex Using Thy1-GCaMP6s Transgenic Mice

Imaging Neural Activity in the Primary Somatosensory Cortex Using Thy1-GCaMP6s Transgenic Mice

Imagem de atividade Neural no córtex somatossensorial primário usando Thy1-GCaMP6s de ratos transgênicos

The mammalian brain exhibits marked symmetry across the sagittal plane. However, detailed description of neural dynamics in symmetric brain regions in ...

Exogenous Administration of Microsomes-associated Alpha-synuclein Aggregates to Primary Neurons As a Powerful Cell Model of Fibrils Formation

Administração exógena de agregados de microssomas associados alfa-synuclein para os neurônios primários como um modelo de célula poderosos de formação de fibrilas

For years, the inability of replicating formation of insoluble alpha-synuclein (&#945;S) inclusions in cell cultures has been a great limitation in the ...