! To become competent effector Th17 cells mediating the actual immune responses, T cells have to undergo two ROR?t-dependent differentiation processes sequentially carried out in thymus and peripheral lymphoid tissues. ROR?t is up-regulated in thymocyes to enhance the survival required for completion of T cell maturation process in thymus, and absence of ROR?t activity severely impairs thymocyte development that eventually leads to lymphoma. ROR?t is again up-regulated in peripheral CD4+ T cells to instruct the differentiation of Th17 cells that mediate many types of autoimmunity. ROR?t is thus considered an important drug target for treatment of Th17-dependent autoimmunity. However, little is known about the common and distinct mechanisms that ROR?t utilize to regulate these two differentiation processes. Our goal is to understand the function of ROR?t in both thymocytes and Th17 cells, which will facilitate to develop drugs specifically targeting Th17-dependent autoimmunity, but not interfering with thymocyte development that leads to lymphoma. The objective of this application is to understand how both thymocytes and peripheral T cells differentially use the same transcription factor ROR?t to regulate their differentiation processes.!

Agency
National Institute of Health (NIH)
Type
Research Project (R01)
Project #
1R01AI109644-01
Application #
8635224
Study Section
Cellular and Molecular Immunology - B Study Section (CMIB)
Program Officer
Prabhudas, Mercy R
Project Start
Project End
Budget Start
Budget End
Support Year
1
Fiscal Year
2014
Total Cost
Indirect Cost
Name
City of Hope/Beckman Research Institute
Department
Type
DUNS #
City
Duarte
State
CA
Country
United States
Zip Code
91010