Transcriptomics

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Oncogene-Expressing senescent melanocytes upregulate MHC Class II, re-localize to the lymph nodes and activate T cells


ABSTRACT: OIS is characterized by a stable proliferation arrest and secretion of pro-inflammatory cytokines and chemokines, the senescence-associated secretory phenotype (SASP). Proliferation arrest and the SASP collaborate to enact tumor suppression, the former by blocking cell proliferation and the latter by recruiting immune cells to clear damaged cells. However, the interactions of OIS cells with the immune system are still poorly defined. Here we show that engagement of OIS in primary human melanocytes, specifically by melanoma driver mutations NRASQ61K and BRAFV600E, causes expression of the MHC class II antigen presentation apparatus, via secreted IL1ß signaling and expression of CIITA, a master regulator of MHC class II gene transcription.

ORGANISM(S): Mus musculus

PROVIDER: GSE99397 | GEO | 2017/06/09

SECONDARY ACCESSION(S): PRJNA388383

REPOSITORIES: GEO

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