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Updated: Jun 13, 2025

A Method for Mouse Pancreatic Islet Isolation and Intracellular cAMP Determination
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cNPAS2 induced β cell dysfunction by regulating KANK1 expression in type 2 diabetes

Yan-Bin Yin1, Wei Ji2, Ying-Lan Liu3

  • 1Department of General Surgery, The First Affiliated Hospital of Jiamusi University, Jiamusi 154000, Heilongjiang Province, China.

World Journal of Diabetes
|September 16, 2024
PubMed
Abstract

Insights

NPAS2 gene up-regulation causes islet beta cell dysfunction in type 2 diabetes (T2DM). Targeting NPAS2 and KANK1 may offer new T2DM treatment strategies, potentially through gastric bypass surgery.

Area of Science:

  • Endocrinology and Metabolism
  • Molecular Biology
  • Genetics

Background:

  • Type 2 Diabetes Mellitus (T2DM) affects over 400 million globally, characterized by impaired insulin secretion and insulin resistance.
  • Understanding the molecular mechanisms of T2DM pathogenesis is crucial for developing effective interventions.

Purpose of the Study:

  • To investigate the role of NPAS2 in T2DM pathogenesis.
  • To explore NPAS2 as a diagnostic marker for T2DM.
  • To evaluate the therapeutic potential of targeting NPAS2 and KANK1 in T2DM.

Main Methods:

  • Gene expression analysis using RT-PCR and Western blot.
  • Diagnostic marker evaluation via Receiver Operating Characteristic (ROC) curve analysis.
  • Cell proliferation assays (CCK-8) and surgical intervention in T2DM mouse models (Roux-en-Y gastric bypass).

Main Results:

  • NPAS2 was significantly upregulated in T2DM islet beta cells, correlating with apoptosis.
  • NPAS2 demonstrated high diagnostic accuracy for T2DM.
  • NPAS2 overexpression increased KANK1 levels; knockdown of NPAS2 and KANK1 enhanced MIN6 cell proliferation.
  • Gastric bypass surgery reduced NPAS2 and KANK1 expression in T2DM mice.

Conclusions:

  • NPAS2 induces beta cell dysfunction in T2DM by regulating KANK1 expression.
  • NPAS2 represents a potential therapeutic target for T2DM.
  • Gastric bypass may ameliorate T2DM by downregulating NPAS2 and KANK1.
Keywords:
Diabetes mellitus type 2Gastric bypassKANK1NPAS2

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