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Related Concept Videos

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Embryonic and induced pluripotent stem cells are excellent models for disease research because of their ability to self-renew and differentiate into most cell types. Somatic cells from a patient are isolated and reprogrammed into induced pluripotent stem cells or iPSCs. These iPSCs are later differentiated into the desired cell type, which mirrors the diseased cell of the patient. In this way, disease models have been created for investigating diseases such as Down syndrome, type I diabetes,...
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Chromatin modification alters gene expression; therefore, scientists can add histone-modifying enzymes, histone variants, and chromatin remodeling complexes to somatic cells to aid reprogramming into pluripotent stem (iPS) cells.
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Related Experiment Video

Updated: Apr 8, 2026

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Human iPSC-Based Modeling Identifies Epigenetic Regulation at the KCNQ1 Locus During Early Islet Development That

Anup K Nair1, Michael Traurig1, Yunhua L Muller1

  • 1Phoenix Epidemiology and Clinical Research Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Phoenix, AZ.

Diabetes
|April 7, 2026
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Summary

Type 2 diabetes risk alleles in KCNQ1 impact pancreatic beta-like cell development by affecting gene expression, potentially via epigenomic mechanisms. This suggests therapies boosting beta-cell mass may benefit individuals with these genetic risk factors.

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Area of Science:

  • Genetics
  • Endocrinology
  • Stem Cell Biology

Background:

  • The KCNQ1 gene harbors a strong association signal with type 2 diabetes (T2D) in Indigenous Americans.
  • Previous studies established an induced pluripotent stem cell (iPSC) model for this T2D-associated KCNQ1 intronic region.

Purpose of the Study:

  • To investigate the functional impact of T2D-associated single nucleotide polymorphisms (SNPs) in the KCNQ1 intronic region on pancreatic beta-cell development.
  • To elucidate the underlying molecular mechanisms by which these KCNQ1 SNPs affect pancreatic islet development.

Main Methods:

  • Utilized CRISPR/Cas9-edited isogenic iPSC lines differing solely by targeted T2D-associated SNPs in the KCNQ1 intronic region.
  • Analyzed gene expression dynamics, specifically of INS and H19, during pancreatic islet development stages.

Main Results:

  • KCNQ1 T2D SNPs significantly affected INS and H19 gene expression dynamics during the endocrine progenitor stage.
  • This dysregulation likely occurs through an epigenomic effect on gene regulation, leading to reduced generation of beta-like cells.
  • The study identified a specific impact on pancreatic beta-cell development.

Conclusions:

  • KCNQ1 risk alleles for T2D influence pancreatic beta-cell development through altered gene expression, likely via epigenomic mechanisms.
  • Individuals with KCNQ1 risk alleles may benefit from therapeutic strategies aimed at increasing pancreatic beta-cell mass.