Current Diabetes Reports

, 15:66

Transcriptional Regulation of the Pancreatic Islet: Implications for Islet Function

  • Michael L. Stitzel
  • Ina Kycia
  • Romy Kursawe
  • Duygu Ucar
Pathogenesis of Type 2 Diabetes and Insulin Resistance (RM Watanabe, Section Editor)

DOI: 10.1007/s11892-015-0635-0

Cite this article as:
Stitzel, M.L., Kycia, I., Kursawe, R. et al. Curr Diab Rep (2015) 15: 66. doi:10.1007/s11892-015-0635-0
Part of the following topical collections:
  1. Topical Collection on Pathogenesis of Type 2 Diabetes and Insulin Resistance

Abstract

Islets of Langerhans contain multiple hormone-producing endocrine cells controlling glucose homeostasis. Transcription establishes and maintains islet cellular fates and identities. Genetic and environmental disruption of islet transcription triggers cellular dysfunction and disease. Early transcriptional regulation studies of specific islet genes, including insulin (INS) and the transcription factor PDX1, identified the first cis-regulatory DNA sequences and trans-acting factors governing islet function. Here, we review how human islet “omics” studies are reshaping our understanding of transcriptional regulation in islet (dys)function and diabetes. First, we highlight the expansion of islet transcript number, form, and function and of DNA transcriptional regulatory elements controlling their production. Next, we cover islet transcriptional effects of genetic and environmental perturbation. Finally, we discuss how these studies’ emerging insights should empower our diabetes research community to build mechanistic understanding of diabetes pathophysiology and to equip clinicians with tailored, precision medicine options to prevent and treat islet dysfunction and diabetes.

Keywords

Genome-wide association study (GWAS) Promoter Broad H3K4me3 domain (BD) Enhancer Stretch/super enhancer (SE) Chromatin interaction analysis by paired end tag sequencing (ChIA-PET) Chromatin immunoprecipitation (ChIP)-seq RNA-seq Islet Type 1/2 diabetes (T1D/T2D) Chromatin Expression quantitative trait locus (eQTL) Splicing quantitative trait locus (sQTL) Allele-specific expression (ASE) Allele-specific expression quantitative trait locus (aseQTL) Single nucleotide polymorphism (SNP) Inflammation Oxidative stress Endoplasmic reticulum (ER) stress 

Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  • Michael L. Stitzel
    • 1
  • Ina Kycia
    • 1
  • Romy Kursawe
    • 1
  • Duygu Ucar
    • 1
  1. 1.The Jackson Laboratory for Genomic Medicine (JAX-GM)FarmingtonUSA

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