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제목: Anatomic compartmentalization regulates TCR-pMHC interaction and memory T cell development during early immune contraction phase
연사: 서 영진 교수 (중앙대학교)
시간: 2017년 10월 12일 (목) 오후 5시
장소: 자연과학대학 5호관 세미나실 (자5 101)
Anatomic compartmentalization regulates TCR-pMHC interaction and memory T cell development during early immune contraction phase
서 영진 교수 (중앙대학교)
Abstract
As virus is cleared, immune cells rapidly undergo contraction; however, how cell function and fate are determined during this phase is not yet fully understood. We unexpectedly discovered that during the early immune contraction phase of an acute infection with lymphocytic choriomeningitis virus, the two dimensional TCR–pMHC effective affinity of TCR transgenic P14 T cells was significantly higher for cells from the splenic red pulp (RP) than the white pulp (WP) compartment. This difference in seeing antigen was governed by regulatory T cells and TGF-β. Decisions for memory gene expression patterns were also established during this early immune contraction phase which led to memory precursors from the WP as opposed to RP to preferentially develop into long-term memory cells, despite expression of identical cell surface markers. Our results highlight that intricate regulation of T cell function and fate is determined by anatomic partitioning during the early immune contraction phase. These findings could have an important impact on development of more efficient vaccines and T cell-targeted immunotherapy for infectious diseases, cancers, and autoimmune disorders.