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Related Experiment Video

Updated: Jan 16, 2026

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Glutamine modulates cellular size by regulating Wee1 expression.

Didhiti Singha1, Meghna Mondal1, Debopriya Choudhury1

  • 1Department of Biomedical Science and Technology, School of Biological Sciences, Ramakrishna Mission Vivekananda Educational and Research Institute (RKMVERI), Kolkata, India.

Scientific Reports
|October 3, 2025
PubMed
Summary

Glutamine, a key nutrient, regulates cancer cell size by influencing Wee1 expression. Depleting glutamine reduces cell size and polyploidy, offering potential therapeutic targets for cancer treatment.

Keywords:
And cancerCellular sizeGlutaminePolyploidyWee1

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Area of Science:

  • Cancer Biology
  • Cell Metabolism
  • Molecular Oncology

Background:

  • Cancer cells exhibit altered size regulation, impacting proliferation and survival.
  • Polyploid giant cancer cells (PGCCs) are linked to tumor progression and treatment resistance.
  • The role of glutamine in cancer cell size control is not well understood.

Purpose of the Study:

  • To investigate the role of glutamine in regulating cancer cell size.
  • To explore the relationship between glutamine, Wee1, and cell size.
  • To understand glutamine's impact on polyploidy in cancer cells.

Main Methods:

  • Cellular size measurements under glutamine-depleted conditions.
  • Analysis of Wee1 (a cell cycle regulator) mRNA and protein expression.
  • Assessment of cytochalasin-B-induced polyploidy in glutamine-deprived cells.
  • Wee1 knockdown experiments.

Main Results:

  • Glutamine depletion significantly reduced cancer cell size.
  • Wee1 expression (mRNA and protein) decreased with glutamine depletion.
  • Wee1 knockdown also reduced cell size.
  • Glutamine deprivation diminished cytochalasin-B-induced polyploidy.

Conclusions:

  • Glutamine is a critical regulator of cancer cell size.
  • Glutamine influences cell size, partly through modulating Wee1 expression.
  • These findings highlight glutamine's role in metabolic control of cell size and offer potential therapeutic avenues.