Thymic Epithelial Cell-Derived IL-15 and IL-15 Receptor α Chain Foster Local Environment for Type 1 Innate Like T Cell Development.

Journal Article (Journal Article)

Expression of tissue-restricted antigens (TRAs) in thymic epithelial cells (TECs) ensures negative selection of highly self-reactive T cells to establish central tolerance. Whether some of these TRAs could exert their canonical biological functions to shape thymic environment to regulate T cell development is unclear. Analyses of publicly available databases have revealed expression of transcripts at various levels of many cytokines and cytokine receptors such as IL-15, IL-15Rα, IL-13, and IL-23a in both human and mouse TECs. Ablation of either IL-15 or IL-15Rα in TECs selectively impairs type 1 innate like T cell, such as iNKT1 and γδT1 cell, development in the thymus, indicating that TECs not only serve as an important source of IL-15 but also trans-present IL-15 to ensure type 1 innate like T cell development. Because type 1 innate like T cells are proinflammatory, our data suggest the possibility that TEC may intrinsically control thymic inflammatory innate like T cells to influence thymic environment.

Full Text

Duke Authors

Cited Authors

  • Tao, H; Li, L; Liao, N-S; Schluns, KS; Luckhart, S; Sleasman, JW; Zhong, X-P

Published Date

  • 2021

Published In

Volume / Issue

  • 12 /

Start / End Page

  • 623280 -

PubMed ID

  • 33732245

Pubmed Central ID

  • PMC7957058

Electronic International Standard Serial Number (EISSN)

  • 1664-3224

Digital Object Identifier (DOI)

  • 10.3389/fimmu.2021.623280


  • eng

Conference Location

  • Switzerland