TBX3 stimulates proliferation and stem cell self-renewal in bladder carcinoma

Lifu Huang1,2, Wenfei Shao2,3, Xiaohong Wang2,4

  • 1Department of Urology, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Linhai City, Zhejiang Province, China.

Abstract

Insights

TBX3, a gene influenced by TGF-β1, fuels bladder carcinoma growth and stemness while hindering apoptosis. Targeting TBX3 offers a promising strategy for bladder cancer treatment.

Area of Science:

  • Oncology
  • Molecular Biology
  • Cancer Stem Cell Research

Background:

  • Bladder carcinoma is a leading cause of cancer death in men, with high rates of recurrence and metastasis after surgery.
  • Current treatments for bladder carcinoma have limitations, necessitating the identification of novel therapeutic targets.

Purpose of the Study:

  • To investigate the role of TBX3 in bladder carcinoma.
  • To explore the potential of TBX3 as a therapeutic target for bladder cancer.

Main Methods:

  • Assessed TBX3 protein and mRNA expression in bladder carcinoma tissues and cells via Western blot and qRT-PCR.
  • Isolated cancer stem cells (CSCs) and analyzed stemness-associated proteins (CD44, CD24, ESA).
  • Evaluated cell proliferation, apoptosis, and self-renewal capabilities using CCK-8, colony formation, and sphere formation assays.

Main Results:

  • Elevated TBX3 expression correlated with increased bladder carcinoma cell proliferation and decreased apoptosis.
  • TBX3 and stemness markers were highly expressed in bladder cancer stem cells.
  • TBX3 promoted CSC self-renewal and inhibited apoptosis, with TGF-β1 identified as a regulator of TBX3.

Conclusions:

  • TBX3, regulated by TGF-β1, drives bladder carcinoma cell proliferation, inhibits apoptosis, and enhances stemness.
  • TBX3 represents a potential therapeutic target for bladder cancer, particularly targeting cancer stem cells.

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