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TIPE1 impairs stemness maintenance in colorectal cancer through directly targeting β-catenin

Tao Ye1, Biwei Yang2, Chen Wang1

  • 1Minhang Branch, Zhongshan Hospital, Fudan University; Institute of Fudan-Minhang Academic Health System, Minhang Hospital, Fudan University, Shanghai, China.

Carcinogenesis
|May 22, 2019
PubMed

Insights

Tumor necrosis factor-α-induced protein 8-like 1 (TIPE1) is downregulated in colon cancer, inhibiting cancer cell growth by reducing stemness. TIPE1 targets β-catenin, suggesting its potential as a therapeutic target for colon cancer.

Area of Science:

  • Oncology
  • Molecular Biology

Background:

  • TIPE1 (tumor necrosis factor-α-induced protein 8-like 1) is implicated in cancer cell death.
  • The role of TIPE1 in colon cancer pathogenesis is not well understood.

Purpose of the Study:

  • To investigate the expression and function of TIPE1 in colon cancer.
  • To elucidate the mechanism underlying TIPE1's effect on colon cancer stemness and growth.

Main Methods:

  • Analysis of TIPE1 expression in colon cancer tissues.
  • In vitro and in vivo experiments assessing the impact of TIPE1 overexpression on colon cancer cell growth and stemness.
  • Investigation of TIPE1's interaction with β-catenin and its effect on Wnt/β-catenin signaling.

Main Results:

  • TIPE1 expression is downregulated in colon cancer tissues and correlates with poorer prognosis.
  • Overexpression of TIPE1 inhibits colon cancer cell proliferation and stemness, reducing markers like ALDH, CD133, CD44, and SOX-9.
  • TIPE1 directly targets and promotes the degradation of β-catenin, crucial for Wnt/β-catenin signaling inhibition.

Conclusions:

  • TIPE1 exhibits anti-tumor effects in colon cancer by suppressing stemness via the Wnt/β-catenin pathway.
  • TIPE1 represents a potential therapeutic target for colon cancer treatment.

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