GSBS Student Publications

Title

Epigenetic Modifications Induced by Blimp-1 Regulate CD8(+) T Cell Memory Progression during Acute Virus Infection

Student Author(s)

Varun N. Kapoor

GSBS Program

Biochemistry & Molecular Pharmacology

Publication Date

2013-10-17

UMMS Affiliation

Department of Pathology

Document Type

Article

Disciplines

Immunity

Abstract

The transcription factor Blimp-1 regulates the overall accumulation of virus-specific CD8(+) T cells during acute viral infections. We found that increased proliferation and survival of Blimp-1-deficient CD8(+) T cells resulted from sustained expression of CD25 and CD27 and persistent cytokine responsiveness. Silencing of Il2ra and Cd27 reduced the Blimp-1-deficient CD8(+) T cell response. Genome-wide chromatin immunoprecipitation (ChIP) sequencing analysis identified Il2ra and Cd27 as direct targets of Blimp-1. At the peak of the antiviral response, but not earlier, Blimp-1 recruited the histone-modifying enzymes G9a and HDAC2 to the Il2ra and Cd27 loci, thereby repressing expression of these genes. In the absence of Blimp-1, Il2ra and Cd27 exhibited enhanced histone H3 acetylation and reduced histone H3K9 trimethylation. These data elucidate a central mechanism by which Blimp-1 acts as an epigenetic regulator and enhances the numbers of short-lived effector cells while suppressing the development of memory-precursor CD8(+) T cells.

DOI of Published Version

10.1016/j.immuni.2013.08.032

Source

Shin HM, Kapoor VN, Guan T, Kaech SM, Welsh RM, Berg LJ. Epigeneti Modifications Induced by Blimp-1 Regulate CD8(+) T Cell Memory Progression durin Acute Virus Infection. Immunity. 2013 Oct 17;39(4):661-75. doi: 10.1016/j.immuni.2013.08.032. Link to article on publisher's website

Journal/Book/Conference Title

Immunity

Related Resources

Link to article in PubMed

PubMed ID

24120360

Link to Full Text

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