Name: quantitative 3d in silico modeling (q3dism) of cerebral amyloid-beta phagocytosis in rodent models of alzheimer's disease
Uploaded: 2016-12-26T13:00:00
Description: Watch this Scientific Journal Video about Quantitative 3D In Silico Modeling q3DISM of Cerebral Amyloid-beta Phagocytosis in Rodent Models of Alzheimer's Disease at JoVE.com

M-V.G-S. is supported by a BrightFocus Foundation Alzheimer's Disease Research Fellowship Award (A2015309F) and an Alzheimer's Association, California Southland Chapter Young Investigator Award. T.M.W. is supported by an ARCS Foundation and John Douglas French Alzheimer's Foundation Maggie McKnight Russell-JDFAF Memorial Postdoctoral Fellowship. This work was supported by the National Institute on Neurologic Disorders and Stroke (1R01NS076794-01, to T.T.), an Alzheimer's Association Zenith Fellows Award (ZEN-10-174633, to T.T.), and an American Federation of Aging Research/Ellison Medical Foundation Julie Martin Mid-Career Award in Aging Research (M11472, to T.T.). We are grateful for startup funds from the Zilkha Neurogenetic Institute, which helped to make this work possible. &#8195;

Declaração de ética em pesquisa: Todos os experimentos envolvendo animais detalhados aqui foram aprovados pela University of Southern California Institutional Animal Care e Use Committee (IACUC) e realizado em estrita conformidade com os Institutos Nacionais de diretrizes de saúde e recomendações da Associação de Avaliação e Acreditação do Laboratório animal Care International. 1. Rodent isolamento Cérebro e Preparação para imunocoloração DIA 1: <ol><li> Coloque ratos...

<ol>
	<li>Brookmeyer, 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=National+estimates+of+the+prevalence+of+Alzheimer's+disease+in+the+United+States.">National estimates of the prevalence of Alzheimer's disease in the United States.</a> Alzheimers Dement. 7 (1), 61-73 (2011).</li><li>Selkoe, D. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Alzheimer's+disease.">Alzheimer's disease.</a> Cold Spring Harb Perspect Biol. 3 (7), (2011).</li><li>Heneka, M. T., Golenbock, D. T., Latz, E. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Innate+immunity+in+Alzheimer's+disease.">Innate immunity in Alzheimer's disease.</a> Nat Immunol. 16 (3), 229-236 (2015).</li><li>Mawuenyega, , 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=Decreased+clearance+of+CNS+beta-amyloid+in+Alzheimer's+disease.">Decreased clearance of CNS beta-amyloid in Alzheimer's disease.</a> Science. 330 (6012), 1774 (2010).</li><li>Hickman, S. E., Allison, E. K., El Khoury, J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Microglial+dysfunction+and+defective+beta-amyloid+clearance+pathways+in+aging+Alzheimer's+disease+mice.">Microglial dysfunction and defective beta-amyloid clearance pathways in aging Alzheimer's disease mice.</a> J Neurosci. 28 (33), 8354-8360 (2008).</li><li>Johnston, H., Boutin, H., Allan, S. M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Assessing+the+contribution+of+inflammation+in+models+of+Alzheimer's+disease.">Assessing the contribution of inflammation in models of Alzheimer's disease.</a> Biochem Soc Trans. 39 (4), 886-890 (2011).</li><li>Gjoneska, 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=Conserved+epigenomic+signals+in+mice+and+humans+reveal+immune+basis+of+Alzheimer's+disease.">Conserved epigenomic signals in mice and humans reveal immune basis of Alzheimer's disease.</a> Nature. 518 (7539), 365-369 (2015).</li><li>Reitz, C., Mayeux, R. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Alzheimer+disease:+epidemiology,+diagnostic+criteria,+risk+factors+and+biomarkers.">Alzheimer disease: epidemiology, diagnostic criteria, risk factors and biomarkers.</a> Biochem Pharmacol. 88 (4), 640-651 (2014).</li><li>Hazrati, L. -. 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=Genetic+association+of+CR1+with+Alzheimer's+disease:+a+tentative+disease+mechanism.">Genetic association of CR1 with Alzheimer's disease: a tentative disease mechanism.</a> Neurobiol Aging. 33 (12), 2949 (2012).</li><li>Griciuc, 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=Alzheimer's+Disease+Risk+Gene+CD33+Inhibits+Microglial+Uptake+of+Amyloid+Beta.">Alzheimer's Disease Risk Gene CD33 Inhibits Microglial Uptake of Amyloid Beta.</a> Neuron. , 1-13 (2013).</li><li>Li, X., Long, J., He, T., Belshaw, R., Scott, J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Integrated+genomic+approaches+identify+major+pathways+and+upstream+regulators+in+late+onset+Alzheimer's+disease.">Integrated genomic approaches identify major pathways and upstream regulators in late onset Alzheimer's disease.</a> Scientific reports. 5, 12393 (2015).</li><li>Weitz, T. M., Town, T. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Microglia+in+Alzheimers+Disease:+"Its+All+About+Context".">Microglia in Alzheimers Disease: "Its All About Context".</a> Int J Alzheimers Dis. , 314185 (2012).</li><li>Guillot-Sestier, M. -. V., Doty, K. R., Town, T. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Innate+Immunity+Fights+Alzheimer's+Disease.">Innate Immunity Fights Alzheimer's Disease.</a> Trends Neurosci. 38 (11), 674-681 (2015).</li><li>Guillot-Sestier, M. -. V., Town, T. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Innate+immunity+in+Alzheimer's+disease:+a+complex+affair.">Innate immunity in Alzheimer's disease: a complex affair.</a> CNS Neurol Disord Drug Targets. 12 (5), 593-607 (2013).</li><li>Jankowsky, J. L., Slunt, H. H., Ratovitski, T., Jenkins, N. A., Copeland, N. G., Borchelt, D. R. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Co-expression+of+multiple+transgenes+in+mouse+CNS:+a+comparison+of+strategies.">Co-expression of multiple transgenes in mouse CNS: a comparison of strategies.</a> Biomol Eng. 17 (6), 157-165 (2001).</li><li>Guillot-Sestier, M. -. V., 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=Il10+deficiency+rebalances+innate+immunity+to+mitigate+Alzheimer-like+pathology.">Il10 deficiency rebalances innate immunity to mitigate Alzheimer-like pathology.</a> Neuron. 85 (3), 534-548 (2015).</li><li>Cohen, R. 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=A+transgenic+Alzheimer+rat+with+plaques,+tau+pathology,+behavioral+impairment,+oligomeric+a&#946;,+and+frank+neuronal+loss.">A transgenic Alzheimer rat with plaques, tau pathology, behavioral impairment, oligomeric a&#946;, and frank neuronal loss.</a> J Neurosci. 33 (15), 6245-6256 (2013).</li><li>Imai, Y., Ibata, I., Ito, D., Ohsawa, K., Kohsaka, S. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=A+novel+gene+iba1+in+the+major+histocompatibility+complex+class+III+region+encoding+an+EF+hand+protein+expressed+in+a+monocytic+lineage.">A novel gene iba1 in the major histocompatibility complex class III region encoding an EF hand protein expressed in a monocytic lineage.</a> Biochem. Biophys. Res. Commun. 224 (3), 855-862 (1996).</li><li>Ohsawa, K., Imai, Y., Sasaki, Y., Kohsaka, S. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Microglia/macrophage-specific+protein+Iba1+binds+to+fimbrin+and+enhances+its+actin-bundling+activity.">Microglia/macrophage-specific protein Iba1 binds to fimbrin and enhances its actin-bundling activity.</a> J Neurochem. 88 (4), 844-856 (2004).</li><li>Bandyopadhyay, U., Nagy, M., Fenton, W. A., Horwich, A. L. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Absence+of+lipofuscin+in+motor+neurons+of+SOD1-linked+ALS+mice.">Absence of lipofuscin in motor neurons of SOD1-linked ALS mice.</a> Proc Natl Acad Sci U S A. 111 (30), 11055-11060 (2014).</li><li>Holness, C. L., Simmons, D. L. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Molecular+cloning+of+CD68,+a+human+macrophage+marker+related+to+lysosomal+glycoproteins.">Molecular cloning of CD68, a human macrophage marker related to lysosomal glycoproteins.</a> Blood. 81 (6), 1607-1613 (1993).</li><li>Connor, 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=Phosphorylation+of+the+translation+initiation+factor+eIF2alpha+increases+BACE1+levels+and+promotes+amyloidogenesis.">Phosphorylation of the translation initiation factor eIF2alpha increases BACE1 levels and promotes amyloidogenesis.</a> Neuron. 60 (6), 988-1009 (2008).</li><li>Cai, D., 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=Phospholipase+D1+corrects+impaired+betaAPP+trafficking+and+neurite+outgrowth+in+familial+Alzheimer's+disease-linked+presenilin-1+mutant+neurons.">Phospholipase D1 corrects impaired betaAPP trafficking and neurite outgrowth in familial Alzheimer's disease-linked presenilin-1 mutant neurons.</a> Proc Natl Acad Sci U S A. 103 (6), 1936-1940 (2006).</li><li>Marsh, S. 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=The+adaptive+immune+system+restrains+Alzheimer's+disease+pathogenesis+by+modulating+microglial+function.">The adaptive immune system restrains Alzheimer's disease pathogenesis by modulating microglial function.</a> Proc Natl Acad Sci U S A. 113 (9), 1316-1325 (2016).</li><li>Lefterov, 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=Apolipoprotein+A-I+deficiency+increases+cerebral+amyloid+angiopathy+and+cognitive+deficits+in+APP/PS1DeltaE9+mice.">Apolipoprotein A-I deficiency increases cerebral amyloid angiopathy and cognitive deficits in APP/PS1DeltaE9 mice.</a> J Biol. Chem. 285 (47), 36945-36957 (2010).</li><li>Blurton-Jones, 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=Neural+stem+cells+improve+cognition+via+BDNF+in+a+transgenic+model+of+Alzheimer+disease.">Neural stem cells improve cognition via BDNF in a transgenic model of Alzheimer disease.</a> Proc Natl Acad Sci U S A. 106 (32), 13594-13599 (2009).</li><li>Stalder, M., Deller, T., Staufenbiel, M., Jucker, M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=3D-Reconstruction+of+microglia+and+amyloid+in+APP23+transgenic+mice:+no+evidence+of+intracellular+amyloid.">3D-Reconstruction of microglia and amyloid in APP23 transgenic mice: no evidence of intracellular amyloid.</a> Neurobiol Aging. 22 (3), 427-434 (2001).</li><li>Leinenga, G., G&#246;tz, J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Scanning+ultrasound+removes+amyloid-&#946;+and+restores+memory+in+an+Alzheimer's+disease+mouse+model.">Scanning ultrasound removes amyloid-&#946; and restores memory in an Alzheimer's disease mouse model.</a> Sci Transl Med. 7 (278), 33 (2015).</li><li>Liarski, V. 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=Cell+distance+mapping+identifies+functional+T+follicular+helper+cells+in+inflamed+human+renal+tissue.">Cell distance mapping identifies functional T follicular helper cells in inflamed human renal tissue.</a> Sci Transl Med. 6 (230), 46 (2014).</li><li>Nichols, L., Pike, V. W., Cai, L., Innis, R. B. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Imaging+and+in+vivo+quantitation+of+beta-amyloid:+an+exemplary+biomarker+for+Alzheimer's+disease.">Imaging and in vivo quantitation of beta-amyloid: an exemplary biomarker for Alzheimer's disease.</a> Biol Psychiatry. 59 (10), 940-947 (2006).</li><li>Skovronsky, D. M., Zhang, B., Kung, M. P., Kung, H. F., Trojanowski, J. Q., Lee, V. M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=In+vivo+detection+of+amyloid+plaques+in+a+mouse+model+of+Alzheimer's+disease.">In vivo detection of amyloid plaques in a mouse model of Alzheimer's disease.</a> Proc Natl Acad Sci U S A. 97 (13), 7609-7614 (2000).</li><li>Lian, H., Litvinchuk, A., Chiang, A. C. -. A., Aithmitti, N., Jankowsky, J. L., Zheng, H. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Astrocyte-Microglia+Cross+Talk+through+Complement+Activation+Modulates+Amyloid+Pathology+in+Mouse+Models+of+Alzheimer's+Disease.">Astrocyte-Microglia Cross Talk through Complement Activation Modulates Amyloid Pathology in Mouse Models of Alzheimer's Disease.</a> J Neurosci. 36 (2), 577-589 (2016).</li><li>Novotny, 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=Conversion+of+Synthetic+A&#946;+to+In+Vivo+Active+Seeds+and+Amyloid+Plaque+Formation+in+a+Hippocampal+Slice+Culture+Model.">Conversion of Synthetic A&#946; to In Vivo Active Seeds and Amyloid Plaque Formation in a Hippocampal Slice Culture Model.</a> J Neurosci. 36 (18), 5084-5093 (2016).</li><li>Tartaro, 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=Development+of+a+fluorescence-based+in+vivo+phagocytosis+assay+to+measure+mononuclear+phagocyte+system+function+in+the+rat.">Development of a fluorescence-based in vivo phagocytosis assay to measure mononuclear phagocyte system function in the rat.</a> J Immunotoxicol. 12 (3), 239-246 (2015).</li></ol>

O protocolo que descrevemos neste relatório para a verdadeira quantificação 3D de Ap fagocitose in vivo pelos fagócitos mononucleares depende de rotulagem específica dos compartimentos celulares e subcelulares, bem como depósitos de Ap. Especificamente, usamos Iba1 (ionizada-se ligar à molécula de cálcio Adaptador 1), uma proteína que está envolvida em membrana ruffling e fagocitose por activação de célula 18, 19, para corar os fagócitos mononucleares cerebrais. E...

Doença de Alzheimer (AD), a demência relacionada com a idade mais comum 1, caracteriza-se pela acumulação de amilóide cerebral-β (Ap) como placas &quot;senis&quot; beta-amilóide, neuroinflamaï¿½o baixo nível crónica, taupatia, perda neuronal, e perturbação cognitiva dois . No AD cérebros de pacientes, neuroinflamação é destinada pelos astrócitos e fagócitos mononucleares reativa (referido como microglia, embora as suas centrais vs. origem periférica permanece obscuro) em torno depósitos Ap 3. Como as sentinelas imunes inatas do SNC, microglia são posicionados centralmente para limpar Ap cérebro. No entanto, o recrutamento da microglia para placas de Ap é acompanhada por muito pouco, se algum, fagocitose Ap 4,5. Uma hipótese é que microglia são inicialmente neuroprotetor por phagocytozing pequenas montagens de Ap. No entanto, eventualmente estas células se tornam neurotóxico como carga Ap esmagadora e / ou d funcional relacionada com a idadeecline, provoca microglia em um fenótipo pró-inflamatório disfuncional, contribuindo para a neurotoxicidade e declínio cognitivo 6. Estudo de associação genômica ampla Recentes (GWAS) identificaram um conjunto de alelos de risco AD pertencentes ao núcleo vias imunitárias inatas 7 que modulam a fagocitose 8-11. Consequentemente, a resposta imune a deposição de amilóide cerebral tornou-se uma grande área de interesse, tanto em termos de compreender a etiologia AD e para o desenvolvimento de novas abordagens terapêuticas 12-14. No entanto, existe uma necessidade vital para a metodologia para avaliar a fagocitose Ap in vivo. Para atender a essa necessidade não satisfeita, temos desenvolvido 3D quantitativa na modelagem silico (q3DISM) para permitir uma verdadeira quantificação 3D da cerebral fagocitose Ap por fagócitos mononucleares em modelos de roedores de doença de Alzheimer-like. Limitado apenas pelo grau em que a doença recapitular, os modelos animais têmcomprovada de valor inestimável para a compreensão AD pathoetiology e para avaliar terapêutica experimental. Devido ao facto de que as mutações nos genes presenilina (PS) e da Proteína Precursora Amilóide (APP) independentemente causar AD autossómica dominante, estes transgenes mutantes têm sido extensivamente usados ​​para gerar modelos de roedores transgénicos. Camundongos transgênicos APP / PS1 coexpressï¿½ simultaneamente &quot;sueco&quot; mutante APP humana (swe APP) e Δ exon 9 mutante presenilina 1 humano (PS1ΔE9) presente com amiloidose cerebral acelerada e neuroinflamação 15,16. Além disso, geramos ratos bi-transgénicos co-injectado com APP swe e construções PS1ΔE9 (linha TgF344-AD, em um fundo Fischer 344). Ao contrário de modelos de ratos transgênicos de amiloidose cerebral, ratos TgF344-AD desenvolver amilóide cerebral que antecede tauopathy, perda apoptótica de neurônios, e comprometimento comportamental 17. Neste relatório, nós descrevemos um protocolo para immunostaining microglia, phagolysosomes e depósitos de Ap em seções do cérebro de ratinhos APP / PS1 e ratos TgF344-AD, e aquisição de imagens confocal grandes z-dimensional. Nós detalhe na geração e análise dos verdadeiros reconstruções 3D a partir de conjuntos de dados confocal permitindo a quantificação da captação de Ap em phagolysosomes microgliais silico. Mais amplamente, a metodologia que nós detalhes aqui pode ser usado para quantificar virtualmente qualquer forma de fagocitose in vivo.

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			<td height="40" style="height:40px;width:384px;">Isoflurane</td>
			<td style="width:152px;">Abbott</td>
			<td style="width:127px;">NDC 0044-5260-05</td>
			<td style="width:249px;"></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;width:384px;">Dissecting scissors</td>
			<td style="width:152px;">VWR</td>
			<td style="width:127px;">82027-582</td>
			<td></td>
		</tr>
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			<td height="20" style="height:20px;width:384px;">Dissecting scissors Blunt tip</td>
			<td style="width:152px;">VWR</td>
			<td style="width:127px;">82027-588</td>
			<td></td>
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		<tr height="20">
			<td height="20" style="height:20px;width:384px;">Tweezers</td>
			<td style="width:152px;">VWR</td>
			<td>94024-408</td>
			<td></td>
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			<td height="20" style="height:20px;width:384px;">23G needle</td>
			<td style="width:152px;">VWR</td>
			<td>BD305145</td>
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			<td height="20" style="height:20px;width:384px;">peristaltic pump FH10</td>
			<td style="width:152px;">Thermo Scientific</td>
			<td>72-310-010</td>
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			<td height="20" style="height:20px;width:384px;">PBS 10X</td>
			<td style="width:152px;">Bioland Scientific</td>
			<td style="width:127px;">PBS01-02</td>
			<td>Working concentration 1X</td>
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			<td height="20" style="height:20px;width:384px;">Adult Mouse Brain Matrix, Coronal slices, Stainless Steel 1mm&#160;</td>
			<td style="width:152px;">Kent Scientific</td>
			<td>RBMS-200C</td>
			<td></td>
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			<td height="20" style="height:20px;width:384px;">Adult Rat Brain Matrix, Coronal slices, Stainless Steel 1mm&#160;</td>
			<td style="width:152px;">Kent Scientific</td>
			<td>RBMS-305C&#160;</td>
			<td></td>
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			<td height="20" style="height:20px;width:384px;">32% Paraformaldehyde aqueous solution</td>
			<td style="width:152px;">EMS</td>
			<td style="width:127px;">15714-S</td>
			<td>Caution: Toxic. Working concentration 4% in PBS</td>
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			<td height="20" style="height:20px;width:384px;">Ethanol</td>
			<td style="width:152px;">VWR</td>
			<td>89125-188</td>
			<td>Various concentrations, see protocol</td>
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			<td height="20" style="height:20px;width:384px;">Tissue-Tek Uni-cassettes Sakura</td>
			<td style="width:152px;">VWR</td>
			<td>25608-774</td>
			<td></td>
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			<td height="20" style="height:20px;width:384px;">Embedding and Infiltration Paraffin</td>
			<td style="width:152px;">VWR</td>
			<td>15147-839</td>
			<td></td>
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			<td height="20" style="height:20px;width:384px;">Microtome Leica RM2125</td>
			<td style="width:152px;">Leica Biosystems</td>
			<td style="width:127px;"></td>
			<td></td>
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			<td height="20" style="height:20px;width:384px;">Disposable Microtome Blades&#160;</td>
			<td style="width:152px;">VWR</td>
			<td style="width:127px;">25608-964</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;width:384px;">Water bath Leica HI 1210</td>
			<td style="width:152px;">Leica Biosystems</td>
			<td style="width:127px;"></td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;width:384px;">Micro slide Superfrost plus</td>
			<td style="width:152px;">VWR</td>
			<td style="width:127px;">48311-703</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;width:384px;">Xylene</td>
			<td style="width:152px;">Sigma-Aldrich</td>
			<td style="width:127px;">534056-4X4L</td>
			<td style="width:249px;">Caution: Toxic&#160;</td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;width:384px;">Target Retrieval Solution 10X</td>
			<td style="width:152px;">DAKO</td>
			<td style="width:127px;">S1699</td>
			<td>Working concentration 1X</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">KimWipes</td>
			<td style="width:152px;">VWR</td>
			<td>21905-026</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;width:384px;">Hydrophobic PAP pen</td>
			<td style="width:152px;">VWR</td>
			<td style="width:127px;">95025-252</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;width:384px;">Triton X-100</td>
			<td style="width:152px;">VWR</td>
			<td style="width:127px;">97062-208</td>
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		<tr height="20">
			<td height="20" style="height:20px;width:384px;">Normal Donkey Serum</td>
			<td style="width:152px;">Jackson Immuno</td>
			<td style="width:127px;">017-000-121</td>
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		<tr height="20">
			<td height="20" style="height:20px;width:384px;">Coverslips</td>
			<td style="width:152px;">VWR</td>
			<td style="width:127px;">48393081</td>
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		<tr height="20">
			<td height="20" style="height:20px;width:384px;">Prolong Gold antifade reagent with DAPI</td>
			<td style="width:152px;">Life Technologies</td>
			<td style="width:127px;">P36935</td>
			<td></td>
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		<tr height="20">
			<td height="20" style="height:20px;width:384px;">Glass Slide Rack</td>
			<td style="width:152px;">VWR</td>
			<td style="width:127px;">100492-942</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;width:384px;">Iba1 antibody (polyclonal, rabbit)</td>
			<td style="width:152px;">Wako</td>
			<td style="width:127px;">019-19741&#160;</td>
			<td>Working concentration 1:200</td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;width:384px;">Iba1 antibody (polyclonal, goat)</td>
			<td style="width:152px;">LifeSpan Bioscience</td>
			<td style="width:127px;">LS-B2645</td>
			<td>Working concentration 1:200</td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;width:384px;">rat CD68 [KP1] antibody (monoclonal, mouse)</td>
			<td style="width:152px;">Abcam</td>
			<td style="width:127px;">ab955</td>
			<td>Working concentration 1:200</td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;width:384px;">mouse CD68 [FA-11] antibody (monoclonal, rat)</td>
			<td style="width:152px;">Abcam</td>
			<td style="width:127px;">ab53444</td>
			<td>Working concentration 1:200</td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;width:384px;">mouse CD107a (LAMP1) antibody (monoclonal, rat)</td>
			<td style="width:152px;">Affymetrix</td>
			<td style="width:127px;">14-1071</td>
			<td>Working concentration 1:100</td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;width:384px;">Beta-Amyloid, 17-24 (4G8) antibody (monoclonal, mouse)</td>
			<td style="width:152px;">Covance</td>
			<td style="width:127px;">SIG-39220</td>
			<td>Working concentration 1:200</td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;width:384px;">Beta-Amyloid, 1-16 (6E10) antibody (monoclonal, mouse)</td>
			<td style="width:152px;">Covance</td>
			<td style="width:127px;">SIG-39320</td>
			<td>Working concentration 1:200</td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;width:384px;">OC antibody (polyclonal, rabbit)</td>
			<td colspan="2">Gifted by D. H. Cribbs and C. G. Glabe (UC Irvine)</td>
			<td>Working concentration 1:200</td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;width:384px;">Alexa Fluor 488&#160; mouse secondary antibody</td>
			<td style="width:152px;">Invitrogen</td>
			<td style="width:127px;">A-11001</td>
			<td>Working concentration 1:1000</td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;width:384px;">Alexa Fluor 488&#160; rat secondary antibody</td>
			<td style="width:152px;">Invitrogen</td>
			<td>A-11006</td>
			<td>Working concentration 1:1000</td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;width:384px;">Alexa Fluor 594 rabbit secondary antibody</td>
			<td style="width:152px;">Invitrogen</td>
			<td>A-11037</td>
			<td>Working concentration 1:1000</td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;width:384px;">Alexa Fluor 594 goat secondary antibody</td>
			<td style="width:152px;">Invitrogen</td>
			<td>A-11080</td>
			<td>Working concentration 1:1000</td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;width:384px;">Alexa Fluor 647 mouse secondary antibody</td>
			<td style="width:152px;">Invitrogen</td>
			<td>A-21235</td>
			<td>Working concentration 1:1000</td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;width:384px;">Alexa Fluor 647 rabbit secondary antibody</td>
			<td style="width:152px;">Invitrogen</td>
			<td>A-21443</td>
			<td>Working concentration 1:1000</td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;width:384px;">Immersion oil</td>
			<td style="width:152px;">Nikon&#160;</td>
			<td style="width:127px;"></td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;width:384px;">A1 Confocal microscope</td>
			<td style="width:152px;">Nikon&#160;</td>
			<td style="width:127px;"></td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;width:384px;">NIS Elements Advanced Research software</td>
			<td style="width:152px;">Nikon&#160;</td>
			<td style="width:127px;"></td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;width:384px;">Imaris:Bitplane software version 7.6</td>
			<td style="width:152px;">Bitplane</td>
			<td style="width:127px;"></td>
			<td>&#34;coloc&#34; and &#34;supass&#34; modules are used.&#160;Alternatively, the open-source freeware&#160;ImageJ can be used for colocalization&#160;analysis of confocal z-stacks datasets.</td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;"></td>
			<td style="width:152px;"></td>
			<td style="width:127px;"></td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;width:384px;"></td>
			<td style="width:152px;"></td>
			<td style="width:127px;"></td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;width:384px;"></td>
			<td style="width:152px;"></td>
			<td style="width:127px;"></td>
			<td></td>
		</tr>
	</tbody>
</table>

quantitative 3d in silico modeling (q3dism) of cerebral amyloid-beta phagocytosis in rodent models of alzheimer's disease

Neuroinflamação é agora reconhecido como um importante fator etiológico em doenças neurodegenerativas. fagócitos mononucleares são células imunitárias inatas responsáveis ​​pela fagocitose e remoção de escombros e detritos. Estas células incluem macrófagos residentes do SNC conhecidos como microglia e fagócitos mononucleares infiltrantes a partir da periferia. A microscopia de luz tem sido geralmente usado para visualizar a fagocitose em roedores ou espécimes do cérebro humano. No entanto, os métodos qualitativos não forneceram provas definitivas da fagocitose in vivo. Aqui, nós descrevemos 3D quantitativa na modelagem de silício (q3DISM), um método robusto para a verdadeira permitindo a quantificação de 3D-amilóide β (Ap) a fagocitose por fagócitos mononucleares em modelos de roedores da doença de Alzheimer (AD). O método envolve a fluorescência visualizando Ap encapsulado dentro phagolysosomes em seções roedor cerebrais. Grandes conjuntos de dados confocal z-dimensional são então reconstrução 3D para quantificação de A &amp;# 946; colocalized espacialmente no interior do fagolisossoma. Nós de demonstrar a aplicação bem sucedida de q3DISM de ratinho e de rato cérebros, mas esta metodologia pode ser estendida para virtualmente qualquer modo fagocitária em qualquer tecido.

Utilizando a metodologia multi-fase para q3DISM detalhado acima, que são capazes de quantificar a absorção de Ap em fagolisossomas monócitos nos cérebros de murganhos APP / PS1 (Figura 1) e ratos TgF344-AD (Figura 2). Portanto, a metodologia q3DISM permitiu a análise de fagócitos mononucleares em ratinhos e ratos modelos da doença de Alzheimer. Curiosamente, o volume ocupado pelo CD68 + fagolisossomas é aumentado significativamente em...

Watch this Scientific Journal Video about Quantitative 3D In Silico Modeling q3DISM of Cerebral Amyloid-beta Phagocytosis in Rodent Models of Alzheimer's Disease at JoVE.com

Quantitative 3D In Silico Modeling q3DISM of Cerebral Amyloid-beta Phagocytosis in Rodent Models of Alzheimer's Disease

Desenvolvemos uma metodologia para 3D quantitativa na modelagem silico (q3DISM) de amilóide cerebral-β (Aâ) fagocitose por fagócitos mononucleares em modelos de roedores da doença de Alzheimer. Este método pode ser generalizado para a quantificação de praticamente qualquer evento fagocítica in vivo.

3D quantitativa<em&gt; In Silico</em&gt; Modelagem (q3DISM) de beta-amilóide cerebral fagocitose em modelos de roedores da doença de Alzheimer

Neuroinflammation is now recognized as a major etiological factor in neurodegenerative disease. Mononuclear phagocytes are innate immune cells responsible ...

Research

JoVE Journal

Medicine

Quantitative 3D In Silico Modeling (q3DISM) of Cerebral Amyloid-beta Phagocytosis in Rodent Models of Alzheimer's Disease

Examining the Characteristics of Episodic Memory using Event-related Potentials in Patients with Alzheimer's Disease

Examinando as características de memória episódica com potenciais relacionados a eventos em Pacientes com Doença de Alzheimer

Our laboratory uses event-related EEG potentials (ERPs) to understand and support behavioral investigations of episodic memory in patients with amnestic ...

Medicina

Quantitative Analysis of Chromatin Proteomes in Disease

Análise quantitativa de proteomas cromatina na Doença

In the nucleus reside the proteomes whose functions are most intimately linked with gene regulation. Adult mammalian cardiomyocyte nuclei are unique due ...

Gene-environment Interaction Models to Unmask Susceptibility Mechanisms in Parkinson's Disease

Modelos de interação gene-ambiente para desmasca mecanismos de suscetibilidade na doença de Parkinson

Lipoxygenase (LOX) activity has been implicated in neurodegenerative disorders such as Alzheimer&#39;s disease, but its effects in Parkinson&#39;s disease ...

Modeling Stroke in Mice: Permanent Coagulation of the Distal Middle Cerebral Artery

Curso de modelagem em Ratos: Coagulação permanente da artéria distal Cerebral Média

Stroke is the third most common cause of death and a main cause of acquired adult disability in developed countries. Only very limited therapeutical ...

Multi-electrode Array Recordings of Human Epileptic Postoperative Cortical Tissue

Multieletrodos Recordings Matriz de Human epiléptica pós-operatória Cortical Tissue

Epilepsy, affecting about 1% of the population, comprises a group of neurological disorders characterized by the periodic occurrence of seizures, which ...

Use of Ultra-high Field MRI in Small Rodent Models of Polycystic Kidney Disease for In Vivo Phenotyping and Drug Monitoring

Use of Ultra-high Field MRI in Small Rodent Models of Polycystic Kidney Disease for In Vivo Phenotyping and Drug Monitoring

Uso de ultra-alta MRI campo em pequeno roedor modelos de doença renal policística para<em&gt; In Vivo</em&gt; Fenotipagem and Drug Monitoring

Several in vivo pre-clinical studies in Polycystic Kidney Disease (PKD) utilize orthologous rodent models to identify and study the genetic and molecular ...

Ex Vivo Intestinal Sacs to Assess Mucosal Permeability in Models of Gastrointestinal Disease

Ex Vivo Intestinal Sacs to Assess Mucosal Permeability in Models of Gastrointestinal Disease

Ex Vivo Intestinal Sacs para Avaliar mucosa Permeabilidade de modelos de doença gastrointestinal

The epithelial barrier is the first innate defense of the gastrointestinal tract and selectively regulates transport from the lumen to the underlying ...

Hemodynamic Characterization of Rodent Models of Pulmonary Arterial Hypertension

Hemodinâmica Caracterização de roedores modelos de Hipertensão Arterial Pulmonar

Pulmonary arterial hypertension (PAH) is a rare disease of the pulmonary vasculature characterized by endothelial cell apoptosis, smooth muscle ...

Neurodegeneration in an Animal Model of Chronic Amyloid-beta Oligomer Infusion Is Counteracted by Antibody Treatment Infused with Osmotic Pumps

Neurodegeneração em um modelo animal de Chronic beta-amilóide Oligï¿½ero Infusion é contrariada pelo anticorpo Tratamento infundido com bombas osmóticas

Decline in hippocampal-dependent explicit memory (memory for facts and events) is one of the earliest clinical symptom of Alzheimer&#39;s disease (AD). It ...

Application of Granger Causality Analysis of the Directed Functional Connection in Alzheimer's Disease and Mild Cognitive Impairment

Aplicação da análise de causalidade de Granger da Conexão funcional direcionado na doença de Alzheimer e transtorno cognitivo leve

Impaired functional connectivity in the Default Mode Network (DMN) may be involved in the progression of Alzheimer&#39;s Disease (AD). The Posterior ...