Name: antigen specific in vivo killing assay using cfse labeled target cells
Uploaded: 2010-11-09T17:00:00
Description: Watch this Scientific Journal Video about Antigen Specific In Vivo Killing Assay using CFSE Labeled Target Cells at JoVE.com

I would like to thank Bianca Moth&eacute;, Carla Oseroff, and Marie-France DelGuercio for introducing me to immunological assays and mouse handling. Work in the lab of G. A. Splitter is funded by NIH grant 1-RO1-AI-073558, GLRCE grant 1-U54-AI-057153, and BARD US-3829-06.

1. Eliciting Target-Specific Effector CTLs by Immunization (Day 0)
<ol>
<li> Before beginning, decide upon a specific effector:target system. In this example of a classical in vivo CTL assay, we will use a purified peptide immunization to elicit specific CD8 + T cells. The same peptide will be used to pulse the syngeneic target cells, creating a specific effector:target system. Alternatively, you may choose to use whole pathogen or protein to obtain your specific effectors and targets.</li>
<li> Decont...

<ol>
	<li>Blattman, J. N., Wherry, E. J., Ha, S. J., van der Most, R. G., Ahmed, R. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Impact+of+epitope+escape+on+PD-1+expression+and+CD8+T-cell+exhaustion+during+chronic+infection.">Impact of epitope escape on PD-1 expression and CD8 T-cell exhaustion during chronic infection.</a> J Virol. 83 (9), 4386-4394 (2009).</li><li>Jenkins, M. R., Tsun, A., Stinchcombe, J. C., Griffiths, G. M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+strength+of+T+cell+receptor+signal+controls+the+polarization+of+cytotoxic+machinery+to+the+immunological+synapse.">The strength of T cell receptor signal controls the polarization of cytotoxic machinery to the immunological synapse.</a> Immunity. 31 (4), 621-631 (2009).</li><li>Ingulli, E. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Tracing+tolerance+and+immunity+in+vivo+by+CFSE-labeling+of+administered+cells.">Tracing tolerance and immunity in vivo by CFSE-labeling of administered cells.</a> Methods Mol Biol. 380, 365-376 (2007).</li><li>Durward, M. A., Harms, J., Magnani, D. M., Eskra, L., Splitter, G. A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Discordant+Brucella+melitensis+antigens+yield+cognate+CD8++T+cells+in+vivo.">Discordant Brucella melitensis antigens yield cognate CD8+ T cells in vivo.</a> Infect Immun. 78 (1), 168-176 (2010).</li><li>Lyons, A. B., Parish, C. R. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Determination+of+lymphocyte+division+by+flow+cytometry.">Determination of lymphocyte division by flow cytometry.</a> J Immunol Methods. 171 (1), 131-137 (1994).</li><li>Weston, S. A., Parish, C. R. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=New+fluorescent+dyes+for+lymphocyte+migration+studies.+Analysis+by+flow+cytometry+and+fluorescence+microscopy.">New fluorescent dyes for lymphocyte migration studies. Analysis by flow cytometry and fluorescence microscopy.</a> J Immunol Methods. 133 (1), 87-97 (1990).</li><li>Akondy, R. 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+yellow+fever+virus+vaccine+induces+a+broad+and+polyfunctional+human+memory+CD8++T+cell+response.">The yellow fever virus vaccine induces a broad and polyfunctional human memory CD8+ T cell response.</a> J Immunol. 183 (12), 7919-7930 (2009).</li><li>Wallace, P. K. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Tracking+antigen-driven+responses+by+flow+cytometry:+monitoring+proliferation+by+dye+dilution.">Tracking antigen-driven responses by flow cytometry: monitoring proliferation by dye dilution.</a> Cytometry A. 73 (11), 1019-1034 (2008).</li><li>Labadi, A., Balogh, P. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Differential+preferences+in+serosal+homing+and+distribution+of+peritoneal+B-cell+subsets+revealed+by+in+situ+CFSE+labeling.">Differential preferences in serosal homing and distribution of peritoneal B-cell subsets revealed by in situ CFSE labeling.</a> Int Immunol. 21 (9), 1047-1056 (2009).</li><li>Suffner, J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Dendritic+cells+support+homeostatic+expansion+of+Foxp3++regulatory+T+cells+in+Foxp3.LuciDTR+mice.">Dendritic cells support homeostatic expansion of Foxp3+ regulatory T cells in Foxp3.LuciDTR mice.</a> J Immunol. 184 (4), 1810-1820 .</li></ol>

This assay can be modified to investigate the proliferative capacity of cells, including clonal expansion, because CFSE divides relatively equally among progeny10,11. It is also possible to use CFSE labeling to investigate cell migration6,12, though there are other cell tracing methods that may be more appropriate depending on your hypothesis, for example tetramers and bioluminescence13, which also may be combined with CFSE labeling.
It is important to note th...

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<td>1 mm glass beads</td>
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<td>Invitrogen (Molecular Probes)</td>
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antigen specific in vivo killing assay using cfse labeled target cells

Carboxyfluorescein diacetate succinimidyl ester (CFSE) can be used to easily and quickly label a cell population of interest for in vivo investigation. This labeling has classically been used to study proliferation and migration. In the method presented here, we have shortened the timeline after adoptive transfer to look at survival and killing of epitope specific CFSE labeled target cells4-6. The level of specific killing of a CD8 + T cell clone can indicate the quality of the response, as their quantity may be misleading. Specific CD8+ T cells can become functionally exhausted over time with a decline in cytokine production and killing7,8. Also, certain CD8 + T cell clones may not kill as well as others with differing TCR specificities9. For effective Cell Mediated Immunity (CMI), antigens must be identified that produce not only adequate numbers of responding T cells, but also functionally robust responding T cells. Here we assess the percent cell specific killing of two peptide specific T cell clones in BALB/c mice.

Watch this Scientific Journal Video about Antigen Specific In Vivo Killing Assay using CFSE Labeled Target Cells at JoVE.com

Antigen Specific In Vivo Killing Assay using CFSE Labeled Target Cells

Many infections elicit a strong CTL response, but occasionally, the quantity of responding cells does not correlate to control of the pathogen1. One measure of CTL quality is their ability to kill specifically2. CFSE labeling of target cells can be used to investigate this CTL response quality in vivo3,4.

Antigen Specific In Vivo Killing Assay using CFSE Labeled Target Cells

Carboxyfluorescein diacetate succinimidyl ester (CFSE) can be used to easily and quickly label a cell population of interest for in vivo investigation.  ...

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