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Glycation-Driven Impairment of Cytoskeletal Homeostasis and Viability Disables Glyoxalase-Low Mesothelia From

Satyarthi Mishra1, Kottpalli Vidhipriya2, Anchita Gopikrishnan2

  • 1Centre for Nano Science and Engineering, Indian Institute of Science, Bengaluru, Karnataka, India.

Journal of Cellular Physiology
|January 15, 2026
PubMed

Insights

High levels of methylglyoxal (MG) promote ovarian cancer spread by damaging mesothelial cells. Inhibiting MG

Area of Science:

  • Oncology
  • Metabolic Disorders
  • Cell Biology

Background:

  • Chronic metabolic disorders and aging increase dicarbonyls, leading to biomolecule dysfunction.
  • Systemic metabolic dysregulation is linked to accelerated cancer progression, but mechanisms are unclear.

Purpose of the Study:

  • To investigate the role of dicarbonyls, specifically methylglyoxal (MG), in ovarian cancer colonization and spread.
  • To elucidate the mechanisms by which mesothelial cells interact with and are affected by cancer spheroids under varying MG concentrations.

Main Methods:

  • Time-lapse and end-point experiments combined with tissue-scale simulations to model ovarian cancer colonization.
  • Analysis of mesothelial cell adhesion, motility, viability, and F-actin, ezrin, and ZO-1 localization under MG exposure.
  • Assessment of cancer cell glycation resistance via glyoxalase 1 (GLO1) expression and the effects of GLO1 inhibition.

Main Results:

  • Confluent healthy mesothelia can impede ovarian cancer spheroidal adhesion and spread.
  • Increasing methylglyoxal (MG) concentrations facilitate mesothelial clearance by cancer spheroids.
  • High MG levels impair mesothelial cell adhesion and motility by disrupting cytoskeletal and junctional proteins.
  • MG reduces mesothelial cell viability, with confluence being dependent on this viability.
  • Cancer cells exhibit higher resistance to glycation due to elevated glyoxalase 1 (GLO1) expression.
  • Pharmacological inhibition of GLO1 sensitizes cancer cells to MG-induced damage.

Conclusions:

  • Methylglyoxal (MG) plays a critical role in facilitating ovarian cancer progression by compromising the mesothelial barrier.
  • Targeting stromal glycation, potentially through GLO1 inhibition, presents a promising therapeutic strategy for ovarian cancer.
Keywords:
glycationglyoxalasemesotheliamethylglyoxalovarian cancer

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