Abstract
The T cell compartment is phenotypically and functionally heterogeneous; subsets of naive and memory cells have different functional properties, and also differ with respect to homeostatic potential and the ability to persist in vivo. Human stem cell memory T (TSCM) cells, which possess superior immune reconstitution and antitumor response capabilities, can be identified by polychromatic flow cytometry on the basis of the simultaneous expression of several naive markers together with the memory marker CD95. We describe here a protocol based on the minimum set of markers required for optimal identification of human and nonhuman primate (NHP) TSCM cells with commonly available flow cytometers. By using flow sorters, TSCM cells can thereby be isolated efficiently at high yield and purity. With the use of the 5.5-h isolation procedure, depending on the number of cells needed, the sorting procedure can last for 2–15 h. We also indicate multiple strategies for their efficient expansion in vitro at consistent numbers for functional characterization or adoptive transfer experiments.
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Acknowledgements
We thank J. Yu and M. Beddall (ImmunoTechnology Section, VRC) for antibody conjugation; S.P. Perfetto, D. Ambrozak and R. Nguyen (Flow Cytometry Core, VRC) for assistance with cell sorting; M. F. Quigley (Immunology Laboratory, VRC) for providing the HLA-A*0201+ donor; and the other members of the ImmunoTechnology section for continuous discussion. This work was supported by the NIH Intramural Research Program and by the Associazione Italiana per la Ricerca sul Cancro to E.L.
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E.L. conceived the protocol; E.L., L.G. and A.R. performed the experiments; D.A.P. and D.M. provided reagents and critical support; N.P.R. and M.R. supervised the research; L.G., D.M., D.A.P. and N.P.R. edited the manuscript; E.L. and M.R. wrote the manuscript.
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Lugli, E., Gattinoni, L., Roberto, A. et al. Identification, isolation and in vitro expansion of human and nonhuman primate T stem cell memory cells. Nat Protoc 8, 33–42 (2013). https://doi.org/10.1038/nprot.2012.143
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DOI: https://doi.org/10.1038/nprot.2012.143