作者
Erietta Stelekati,Zhangying Cai,Sasikanth Manne,Zeyu Chen,Jean-Christophe Beltra,Lance Alec Buchness,Xuebing Leng,Svetlana Ristin,Kito Nzingha,Viktoriya Ekshyyan,Christina Niavi,Mohamed S. Abdel-Hakeem,Mohammed-Alkhatim Ali,Sydney Drury,Chi Wai Lau,Zhen Gao,Yuguang Ban,Simon K. Zhou,K. Mark Ansel,Makoto Kurachi,Martha S. Jordan,Alejandro V. Villarino,Shin Foong Ngiow,E. J. Wherry
摘要
SignificanceCD8 T cell exhaustion is a key underlying factor limiting immunity in chronic infections and cancer. Persistent antigen exposure antagonizes formation of functional memory CD8 T cells that provide long-term protection and, instead, drives the development of exhausted CD8 T cells (TEX). Improving TEX persistence and function is a major goal for reinvigorating immune responses against chronic infections and tumors. Here, we identify miR-29a as a molecule that attenuates exhaustion and enhances persistence and function of TEX. Enforced expression of miR-29a alters TEX transcriptome, resulting in robust changes in molecular pathways governed by fundamental transcription factors and epigenetic modulators. Thus, enforced miR-29a expression enhances TEX responses, attenuates exhaustion, and represents a target for improving the outcome of immunotherapy.