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Diabetes pathogenic mechanisms and potential new therapies based upon a novel target called TXNIP

Lance Thielen1, Anath Shalev

  • 1Division of Endocrinology, Diabetes, and Metabolism, Comprehensive Diabetes Center and Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, USA.

Current Opinion in Endocrinology, Diabetes, and Obesity
|January 23, 2018
PubMed
Abstract

Insights

Thioredoxin-interacting protein (TXNIP) drives pancreatic beta-cell dysfunction in diabetes. Inhibiting TXNIP shows promise for novel diabetes treatments by protecting beta-cells and enhancing insulin signaling.

Area of Science:

  • Endocrinology
  • Metabolic Diseases
  • Molecular Biology

Background:

  • Thioredoxin-interacting protein (TXNIP) is a key regulator of pancreatic beta-cell function and survival.
  • Dysregulation of TXNIP is implicated in the pathogenesis of type 1 and type 2 diabetes.
  • TXNIP's role in beta-cell apoptosis makes it a potential therapeutic target.

Purpose of the Study:

  • To review recent developments regarding TXNIP as a therapeutic target for diabetes.
  • To update on the role of TXNIP in beta-cell dysfunction and death.
  • To explore novel treatment strategies targeting TXNIP.

Main Methods:

  • Review of basic, preclinical, and epidemiological research.
  • Analysis of studies on TXNIP induction by glucose and its role in diabetes.
  • Examination of TXNIP regulation by microRNAs, hypoglycemic agents, and calcium signaling.

Main Results:

  • TXNIP is induced by glucose and increased in diabetes, promoting beta-cell apoptosis.
  • TXNIP deletion protects against diabetes; TXNIP inhibition enhances insulin production and GLP-1 signaling.
  • TXNIP expression is modulated by hypoglycemic agents, ChREBP, and calcium signaling (e.g., verapamil).
  • Retrospective studies suggest verapamil use may correlate with lower type 2 diabetes incidence.

Conclusions:

  • TXNIP is a critical factor in regulating functional beta-cell mass.
  • TXNIP inhibition demonstrates beneficial effects in various studies.
  • Targeting TXNIP offers a novel therapeutic approach for diabetes treatment.

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