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Cell Immunol. 2002 Jul-Aug;218(1-2):1-6.

Differentiation of human gamma-delta T cells towards distinct memory phenotypes.

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Biochemisches Institut, Justus-Liebig-Universit├Ąt Giessen, Friedrichstr. 24, 35392 Giessen, Germany.


Vgamma9/Vdelta2 T cells comprise a small population of peripheral T cells responding towards the low molecular weight antigen, (E)-4-hydroxy-3-methyl-but-2-enyl-pyrophosphate (HMB-PP). HMB-PP-stimulated Vgamma9/Vdelta2 T cells proliferated, expressed CCL5/RANTES, and upregulated markers like CD16, CD25, CD69, and CD94, in the presence of either IL-15 or IL-21. Vgamma9/Vdelta2 T cells grown in the presence of IL-15 differentiated into an effector/memory population characterized by production of TNF-alpha, expression of CD45RO and CCR5, and lack of CD62L, CD81, and CCR7. In contrast, Vgamma9/Vdelta2 T cells grown with IL-21 differentiated into putative central memory CD45RO(+) T cells that did not produce TNF-alpha, IFN-gamma, or IL-4, and maintained expression of CD62L, CD81, and CCR7.

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