Name: in situ detection of autoreactive cd4 t cells in brain and heart using major histocompatibility complex class ii dextramers
Uploaded: 2014-08-01T14:00:00
Description: Watch this Scientific Journal Video about In Situ Detection of Autoreactive CD4 T Cells in Brain and Heart Using Major Histocompatibility Complex Class II Dextramers at JoVE.com

Este trabalho foi financiado pela American Heart Association e Fundação Cardiomiopatia das Crianças (SDG2462390204001) e os Institutos Nacionais de Saúde (HL114669). CM é um receptor de um pós-doutorado concessão bolsa de pesquisa concedido pela Fundação Miocardite, NJ.

Declaração de Ética: Todos os procedimentos com animais foram conduzidos de acordo com as diretrizes para o Cuidado e Uso de Animais de Laboratório e aprovado pela Universidade de Nebraska-Lincoln, Lincoln, NE. 1. Indução de EAE <ol><li> Para induzir a EAE, preparar a emulsão de péptido / adjuvante completo de Freund (CFA), como descrito em 11, com as seguintes modificações: Passo 1.1:. Preparar PLP 139-151 a uma concentração de 1 ...

<ol>
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(88), e51654 (2014).</li><li>Massilamany, C., Steffen, D., Reddy, J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=An+epitope+from+Acanthamoeba+castellanii+that+cross-react+with+proteolipid+protein+139-151-reactive+T+cells+induces+autoimmune+encephalomyelitis+in+SJL+mice.">An epitope from Acanthamoeba castellanii that cross-react with proteolipid protein 139-151-reactive T cells induces autoimmune encephalomyelitis in SJL mice.</a> J Neuroimmunol. 219 (1-2), 17-24 (2010).</li><li>Donermeyer, D. L., Beisel, K. W., Allen, P. M., Smith, S. C. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Myocarditis-inducing+epitope+of+myosin+binds+constitutively+and+stably+to+I-Ak+on+antigen-presenting+cells+in+the+heart.">Myocarditis-inducing epitope of myosin binds constitutively and stably to I-Ak on antigen-presenting cells in the heart.</a> J Exp Med. 182 (5), 1291-1300 (1995).</li><li>Liao, L., Sindhwani, R., Leinwand, L., Diamond, B., Factor, S. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Cardiac+alpha-myosin+heavy+chains+differ+in+their+induction+of+myocarditis.+Identification+of+pathogenic+epitopes.">Cardiac alpha-myosin heavy chains differ in their induction of myocarditis. Identification of pathogenic epitopes.</a> J Clin Invest. 92 (6), 2877-2882 (1993).</li><li>Cameron, T. O., Cochran, J. R., Yassine-Diab, B., Sekaly, R. P., Stern, L. 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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=Activated+human+epitope-specific+T+cells+identified+by+class+II+tetramers+reside+within+a+CD4high,+proliferating+subset.">Activated human epitope-specific T cells identified by class II tetramers reside within a CD4high, proliferating subset.</a> Int Immunol. 13 (6), 799-806 (2001).</li><li>Reddy, 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=Detection+of+autoreactive+myelin+proteolipid+protein+139-151-specific+T+cells+by+using+MHC+II+(IAs)+tetramers.">Detection of autoreactive myelin proteolipid protein 139-151-specific T cells by using MHC II (IAs) tetramers.</a> J Immunol. 170 (2), 870-877 (2003).</li><li>Skinner, P. J., Daniels, M. A., Schmidt, C. S., Jameson, S. C., Haase, A. T. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Cutting+edge:+In+situ+tetramer+staining+of+antigen-specific+T+cells+in+tissues.">Cutting edge: In situ tetramer staining of antigen-specific T cells in tissues.</a> J Immunol. 165 (2), 613-617 (2000).</li><li>Skinner, P. J., Haase, A. T. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=In+situ+tetramer+staining.">In situ tetramer staining.</a> J Immunol Methods. 268 (1), 29-34 (2002).</li><li>Skinner, P. J., Haase, A. T. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=In+situ+staining+using+MHC+class+I+tetramers.">In situ staining using MHC class I tetramers.</a> Curr Protoc Immunol. Chapter 17, Unit 17.14.11 (2004).</li></ol>

Ao contrário I tetrâmeros de MHC de classe, o uso de tetrâmeros de MHC de classe II para aplicações de rotina continua a ser um desafio, especialmente para enumerar as freqüências precursoras de células CD4 T auto-reativas de baixa afinidade, em parte devido à sua dependência de ativação 6,15-17. Recentemente, este problema foi contornado pela criação da nova geração de tetrâmeros, chamado &quot;dextramers&quot;, permitindo-nos para as células específicas para o antigénio T CD4 para um con...

O uso do complexo principal de histocompatibilidade tetrâmeros (MHC) de classe II, para a detecção de células específicas para o antigénio T CD4 tem sido um desafio 1-7. Para aumentar a sensibilidade de detecção de tetrâmeros de MHC de classe II, a equipe de pesquisa criou tetrâmeros de próxima geração, designadas &quot;dextramers&quot; 8. Dextramers conter esqueletos de dextrano na qual várias unidades químicas da estreptavidina-fluoróforo são conjugados, de tal modo que vários monómeros, de péptidos biotinilados de MHC-tethered pode ser ligado a uma molécula de dextrano 9. Assim, grandes agregados de dextramers MHC que contêm vários complexos MHC-péptido podem interagir com múltiplos receptores de células T (TCRs). Este grupo recentemente gerado dextramers para vários auto-antigénios e demonstrado que a sensibilidade de detecção de dextramers foi aproximadamente cinco vezes mais do que 8 tetrâmeros. Os sistemas experimentais incluem encefalomielite auto-imune experimental (EAE) induzida com proteína proteolipidica (PLP) em murganhos SJL 139-151; EAE induzida com glicoproteína de mielina oligodendrócitos (MOG) 35-55 em camundongos C57BL / 6; e miocardite auto-imune experimental (EAM) induzida com miosina cardíaca pesada cadeia-α (MyHC) 334-352 em camundongos A / J. Este estudo demonstra a utilização de PLP 139-151 - e MyHC 334-352 dextramers para detectar células específicas para o antigénio T CD4 in situ com especificidade pelo desenvolvimento de um protocolo de coloração directa, eliminando assim a necessidade de amplificar os sinais de utilizar anticorpos fluoróforo, uma aproximar comumente empregado com o uso de tetrâmeros. Além disso, um método global de avaliar tecidos também foi concebida de forma fiável para enumerar as frequências de células T CD4 + específicas para o antigénio in situ 10. Detecção de células T específicas para o antigénio in situ permite a delineação dos eventos causados ​​por estímulos antigénicos específicos de as causadas pela activação do espectador. De igual modo, a técnica em si tu também provides oportunidades de acompanhar a cinética de infiltração de células T específicas de antigénios nos órgãos-alvo.

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			<td height="25" style="height:25px;width:619px;">CFA</td>
			<td style="width:364px;">Sigma Aldrich, St Louis, MO</td>
			<td style="width:219px;">5881</td>
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			<td>21-040-CV</td>
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			<td height="21" style="height:21px;">Female A/J mice&#160;</td>
			<td>Jackson Laboratories, Bar Harbor, ME</td>
			<td>646</td>
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			<td>686</td>
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			<td height="21" style="height:21px;">Leur-lok sterile 1 ml syrringe</td>
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			<td height="21" style="height:21px;">Leur-lok sterile 3 ml syrringe</td>
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			<td>309657</td>
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			<td>BD, Franklin Lakes, NJ</td>
			<td>305195</td>
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			<td>305109</td>
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			<td>MX5311L</td>
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			<td style="width:219px;">12004185</td>
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			<td>Charles Leonard, Inc. Hauppauge, NY</td>
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			<td height="21" style="height:21px;">Plain Microscope slides, size: 3&#34; x 1&#34; x 1.2 mm</td>
			<td>Fisher Scientific, Pittsburgh, PA</td>
			<td style="width:219px;">1255010</td>
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			<td height="25" style="height:25px;">Myhc-a 334-352 (DSAFDVLSFTAEEKAGVYK)</td>
			<td style="width:364px;">Neopeptide, Cambridge, MA</td>
			<td style="width:219px;"></td>
			<td>Store at 4&#959;C</td>
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			<td style="width:364px;">Neopeptide, Cambridge, MA</td>
			<td style="width:219px;"></td>
			<td>Store at 4&#959;C</td>
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			<td height="25" style="height:25px;">MHC class II/IAs PLP 139-151 or TMEV 70-86 dextramers conjugated with APC dye</td>
			<td></td>
			<td></td>
			<td>Store at 4&#959;C</td>
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			<td height="19" style="height:19px;">MHC class II/IAk Myhc 334-352 or&#160; or RNase 40-56 dextramers conjugated with APC dye</td>
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			<td>Store at 4&#959;C</td>
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			<td>&#160;Immundex, Copenhagen, Demark</td>
			<td style="width:219px;"></td>
			<td>Store at 4&#959;C</td>
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			<td style="width:364px;">GE Healthcare, Pittsuburgh, PA</td>
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			<td height="21" style="height:21px;">Leica VT 1200 Vibratome</td>
			<td>Leica Microsystems, Inc. Buffalo Grove, IL</td>
			<td style="width:219px;"></td>
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			<td height="21" style="height:21px;">Olympus BX 60&#160; Laser scanning confocal microscope</td>
			<td>Olympus America, Inc. Center Valley, PA</td>
			<td></td>
			<td></td>
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			<td height="21" style="height:21px;">Nikon A1-Eclipse 90i confocal microscope</td>
			<td>Nikon Inc. Melville, NY</td>
			<td style="width:219px;"></td>
			<td></td>
		</tr>
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in situ detection of autoreactive cd4 t cells in brain and heart using major histocompatibility complex class ii dextramers

This report demonstrates the use of major histocompatibility complex (MHC) class II dextramers for detection of autoreactive CD4 T cells in situ in myelin proteolipid protein (PLP) 139-151-induced experimental autoimmune encephalomyelitis (EAE) in SJL mice and cardiac myosin heavy chain-&#945; (Myhc) 334-352-induced experimental autoimmune myocarditis (EAM) in A/J mice. Two sets of cocktails of dextramer reagents were used, where dextramers+ cells were analyzed by laser scanning confocal microscope (LSCM): EAE, IAs/PLP 139-151 dextramers (specific)/anti-CD4 and IAs/Theiler&#8217;s murine encephalomyelitis virus (TMEV) 70-86 dextramers (control)/anti-CD4; and EAM, IAk/Myhc 334-352 dextramers/anti-CD4 and IAk/bovine ribonuclease (RNase) 43-56 dextramers (control)/anti-CD4. LSCM analysis of brain sections obtained from EAE mice showed the presence of cells positive for CD4 and PLP 139-151 dextramers, but not TMEV 70-86 dextramers suggesting that the staining obtained with PLP 139-151 dextramers was specific. Likewise, heart sections prepared from EAM mice also revealed the presence of Myhc 334-352, but not RNase 43-56-dextramer+ cells as expected. Further, a comprehensive method has also been devised to quantitatively analyze the frequencies of antigen-specific CD4 T cells in the &#8216;Z&#8217; serial images.

Neste relatório, a detecção in situ de antígeno-específicas, autoreactive células T CD4 por coloração direta com dextramers MHC classe II é descrito. Seções cerebrais Corte recentemente foram derivadas de camundongos EAE e corados com cocktails contendo PLP 139-151 (específico) ou TMEV 70-86 (controle) dextramers e anti-CD4. Os painéis de topo da Figura 1 mostra a análise de secções cerebrais LSCM costained com PLP 139-151 dextramers (vermelho) e anticorpo CD4 (verde), onde as c...

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In Situ Detection of Autoreactive CD4 T Cells in Brain and Heart Using Major Histocompatibility Complex Class II Dextramers

O protocolo para detectar células auto-reactivas T CD4 no cérebro e no coração por coloração direta com complexo de histocompatibilidade principal dextramers classe II foi descrito neste relatório. Para análise detalhada, um método confiável para enumerar as freqüências de células T CD4 + antígeno-específicas in situ também é concebido.

A detecção in situ de células T CD4 autoreactive em Cérebro e Coração Usando principal de histocompatibilidade Dextramers classe II

This report demonstrates the use of major histocompatibility complex (MHC) class II dextramers for detection of autoreactive CD4 T cells in situ in myelin ...

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Immunology and Infection

In Situ Detection of Autoreactive CD4 T Cells in Brain and Heart Using Major Histocompatibility Complex Class II Dextramers

Retroviral Transduction of T-cell Receptors in Mouse T-cells

Transdução retroviral de receptor de células T no rato células T

T-cell receptors (TCRs) play a central role in the immune system. TCRs on T-cell surfaces can specifically recognize peptide antigens presented by antigen ...

Imunologia e Infecção

piggyBac Transposon System Modification of Primary Human T Cells

piggyBac Transposon System Modification of Primary Human T Cells

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Rato Naïve CD4<sup&gt; +</sup&gt; Isolamento de células T e<em&gt; In vitro</em&gt; Diferenciação em subpopulações de células T

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The ability of CD4 T cells to carry out effector functions is dependent upon the rapid and efficient migration of these cells in inflamed peripheral ...

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Imaging heterogeneous cellular structures using single molecule localization microscopy has been hindered by inadequate localization precision and ...

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Quantificação de células T antígeno-específicas humanas proliferating de CD4+ usando o éster do Succinimidyl do carboxyfluorescein

Described is a simple, in vitro, dye dilution-based method for measuring antigen-specific CD4+ T cell proliferation in human peripheral blood mononuclear ...