Cargando…

Cell type–specific actions of Bcl11b in early T-lineage and group 2 innate lymphoid cells

The zinc finger transcription factor, Bcl11b, is expressed in T cells and group 2 innate lymphoid cells (ILC2s) among hematopoietic cells. In early T-lineage cells, Bcl11b directly binds and represses the gene encoding the E protein antagonist, Id2, preventing pro-T cells from adopting innate-like f...

Descripción completa

Detalles Bibliográficos
Autores principales: Hosokawa, Hiroyuki, Romero-Wolf, Maile, Yang, Qi, Motomura, Yasutaka, Levanon, Ditsa, Groner, Yoram, Moro, Kazuyo, Tanaka, Tomoaki, Rothenberg, Ellen V.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Rockefeller University Press 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7037248/
https://www.ncbi.nlm.nih.gov/pubmed/31653691
http://dx.doi.org/10.1084/jem.20190972
Descripción
Sumario:The zinc finger transcription factor, Bcl11b, is expressed in T cells and group 2 innate lymphoid cells (ILC2s) among hematopoietic cells. In early T-lineage cells, Bcl11b directly binds and represses the gene encoding the E protein antagonist, Id2, preventing pro-T cells from adopting innate-like fates. In contrast, ILC2s co-express both Bcl11b and Id2. To address this contradiction, we have directly compared Bcl11b action mechanisms in pro-T cells and ILC2s. We found that Bcl11b binding to regions across the genome shows distinct cell type–specific motif preferences. Bcl11b occupies functionally different sites in lineage-specific patterns and controls totally different sets of target genes in these cell types. In addition, Bcl11b bears cell type–specific post-translational modifications and organizes different cell type–specific protein complexes. However, both cell types use the same distal enhancer region to control timing of Bcl11b activation. Therefore, although pro-T cells and ILC2s both need Bcl11b for optimal development and function, Bcl11b works substantially differently in these two cell types.