期刊
SCIENCE
卷 290, 期 5489, 页码 127-131出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.290.5489.127
关键词
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Interactions between the T cell receptor (TCR) and major histocompatibility complex antigens are essential for the survival and homeostasis of peripheral T lymphocytes, However, little is known about the TCR signaling events that result from these interactions. The peripheral T cell pool of p56(lck) (lck)-deficient mice was reconstituted by the expression of an inducible lck transgene. Continued survival of peripheral naive T cells was observed for long periods after switching off the transgene, Adoptive transfer of T cells from these mice into T lymphopoienic hosts confirmed that T cell survival was independent of lck but revealed its essential role in TCR-driven homeostatic proliferation of naive T cells in response to the T cell-deficient host environment. These data suggest that survival and homeostatic expansion depend on different signals.
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