RT Journal Article SR Electronic T1 Cancer-Associated Fibroblasts and T Cells: From Mechanisms to Outcomes JF The Journal of Immunology JO J. Immunol. FD American Association of Immunologists SP 310 OP 320 DO 10.4049/jimmunol.2001203 VO 206 IS 2 A1 Baker, Alfie T. A1 Abuwarwar, Mohammed H. A1 Poly, Lylarath A1 Wilkins, Simon A1 Fletcher, Anne L. YR 2021 UL http://www.jimmunol.org/content/206/2/310.abstract AB Over the past decade, T cell immunotherapy has changed the face of cancer treatment, providing robust treatment options for several previously intractable cancers. Unfortunately, many epithelial tumors with high mortality rates respond poorly to immunotherapy, and an understanding of the key impediments is urgently required. Cancer-associated fibroblasts (CAFs) comprise the most frequent nonneoplastic cellular component in most solid tumors. Far from an inert scaffold, CAFs significantly influence tumor neogenesis, persistence, and metastasis and are emerging as a key player in immunotherapy resistance. In this review, we discuss the physical and chemical barriers that CAFs place between effector T cells and their tumor cell targets, and the therapies poised to target them.