PRRC2A-mediated m6A modification on NCOA4 promotes thymic epithelial tumor progression through PKM2-induced

Tao Wang1, Lang Xia1, Lei Zhang1

  • 1Department of Thoracic Surgery, Shanghai Pulmonary Hospital, School of Medicine, Tongji University, Shanghai, China.

Insights

Proline-rich Coiled-coil 2a (PRRC2A) protein promotes thymic epithelial tumor growth by stabilizing NCOA4 and increasing glycolysis. Inhibiting PRRC2A shows therapeutic potential for advanced thymic epithelial tumors.

Area of Science:

  • Oncology
  • Molecular Biology
  • Metabolic Pathways

Background:

  • Thymic epithelial tumors (TETs) present challenges in advanced stages due to limited treatment options and poor outcomes.
  • The metabolic reprogramming in TETs is not well understood, hindering therapeutic development.

Purpose of the Study:

  • To investigate the role of Proline-rich Coiled-coil 2a (PRRC2A), an m6A reader protein, in the metabolic regulation and progression of TETs.
  • To identify potential therapeutic targets within the PRRC2A-mediated metabolic pathway.

Main Methods:

  • Multi-omics analyses and molecular experiments were used to elucidate the function of PRRC2A in TETs.
  • In vivo studies assessed the effects of PRRC2A inhibition and combined therapies on tumor growth and metastasis.

Main Results:

  • PRRC2A is upregulated in TETs and linked to poor clinical outcomes.
  • PRRC2A stabilizes NCOA4 mRNA, increasing NCOA4 protein expression, which enhances glycolysis via interaction with PKM2, thus promoting TET progression.
  • Inhibition of PRRC2A suppressed tumor growth and metastasis; combined PRRC2A knockdown and PKM2 inhibition showed enhanced antitumor effects.

Conclusions:

  • The PRRC2A-NCOA4-PKM2 axis is a key regulator of glycolytic metabolism in TETs.
  • Targeting this axis, particularly PRRC2A, offers a promising therapeutic strategy for advanced or aggressive thymic epithelial tumors.

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