Transcriptomics

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Persistent STAT5 activation reprograms the epigenetic landscape in CD4+ T cells to drive polyfunctionality and antitumor immunity [RNA-Seq]


ABSTRACT: We report here that persistent activation of signal transducer and activator of transcription 5 (STAT5) in tumor-specific CD4+ T cells drives the development of polyfunctional T cells with superior antitumor activities. We showed that ectopic expression of a constitutively active form of murine STAT5A (CASTAT5) in tumor-specific CD4+ T cells established a distinct epigenetic and transcriptional landscape, endowing CD4+ T cells polyfunctionality, exhaustion-resistance and tumor-infiltrating capability. Single cell RNA sequencing analysis (scRNAseq) identified a subset of cells with the molecular signature indicative of their role as progenitor polyfunctional T cells. Importantly, T cells engineered to co-express CD19-targeting chimeric antigen receptors (CD19CAR) and CASTAT5 gave rise to polyfunctional CD4+ CAR T cells capable of providing optimal help to CD8+ T cells to achieve durable and curative outcomes in mice with advanced B-cell lymphoma. Evidence of CASTAT5 functional activities in primary human CD4+ T cells underscores its potential clinical relevance.

ORGANISM(S): Mus musculus

PROVIDER: GSE152237 | GEO | 2020/10/22

REPOSITORIES: GEO

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