A key control point in the T cell response to chronic infection and neoplasia: FOXO1.

Current Opinion in Immunology
Nimi Marcel, Stephen M Hedrick

Abstract

T cells able to control neoplasia or chronic infections display a signature gene expression profile similar or identical to that of central memory T cells. These cells have qualities of self-renewal and a plasticity that allow them to repeatedly undergo activation (growth, proliferation, and differentiation), followed by quiescence. It is these qualities that define the ability of T cells to establish an equilibrium with chronic infectious agents, and also preserve the ability of T cells to be re-activated (by checkpoint therapy) in response to malignant cancers. Here we describe distinctions between the forms of inhibition mediated by tumors and persistent viruses, we review the properties of T cells associated with long-term immunity, and we identify the transcription factor, FOXO1, as the control point for a program of gene expression that allows CD8+ T cells to undergo serial reactivation and self-renewal.

Citations

Jun 9, 2020·International Immunology·Shiki Takamura
Apr 30, 2021·FASEB Journal : Official Publication of the Federation of American Societies for Experimental Biology·Jiaxue ZhangHui Feng

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