| Literature DB >> 28930659 |
Walter K Mowel1, Sam J McCright1, Jonathan J Kotzin1, Magalie A Collet2, Asli Uyar2, Xin Chen3, Alexandra DeLaney4, Sean P Spencer1, Anthony T Virtue1, EnJun Yang1, Alejandro Villarino5, Makoto Kurachi6, Margaret C Dunagin7, Gretchen Harms Pritchard4, Judith Stein8, Cynthia Hughes8, Diogo Fonseca-Pereira9, Henrique Veiga-Fernandes10, Arjun Raj7, Taku Kambayashi1, Igor E Brodsky4, John J O'Shea5, E John Wherry6, Loyal A Goff11, John L Rinn12, Adam Williams13, Richard A Flavell14, Jorge Henao-Mejia15.
Abstract
Commitment to the innate lymphoid cell (ILC) lineage is determined by Id2, a transcriptional regulator that antagonizes T and B cell-specific gene expression programs. Yet how Id2 expression is regulated in each ILC subset remains poorly understood. We identified a cis-regulatory element demarcated by a long non-coding RNA (lncRNA) that controls the function and lineage identity of group 1 ILCs, while being dispensable for early ILC development and homeostasis of ILC2s and ILC3s. The locus encoding this lncRNA, which we termed Rroid, directly interacted with the promoter of its neighboring gene, Id2, in group 1 ILCs. Moreover, the Rroid locus, but not the lncRNA itself, controlled the identity and function of ILC1s by promoting chromatin accessibility and deposition of STAT5 at the promoter of Id2 in response to interleukin (IL)-15. Thus, non-coding elements responsive to extracellular cues unique to each ILC subset represent a key regulatory layer for controlling the identity and function of ILCs.Entities:
Keywords: ILC1; Id2; innate lymphoid cells; lineage identity; lncRNA; transcriptional regulation
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Year: 2017 PMID： 28930659 PMCID： PMC5761663 DOI： 10.1016/j.immuni.2017.08.012
Source DB: PubMed Journal: Immunity ISSN： 1074-7613 Impact factor: 31.745