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CPEB2 inhibit cell proliferation through upregulating p21 mRNA stability in glioma

Guang Zhao1,2,3,4,5, Zhongjun Zhao1,2,3, Mingyi Xia1,2,3

  • 1Cancer Institute, Xuzhou Medical University, 209 Tongshan Road, Xuzhou, 221004, Jiangsu, China.

Scientific Reports
|December 29, 2023
PubMed

Insights

Cytoplasmic polyadenylate element-binding protein 2 (CPEB2) is downregulated in glioma, acting as a tumor suppressor. Its restoration inhibits glioma cell proliferation and promotes apoptosis by targeting p21, suggesting prognostic potential.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • Glioma is a common, incurable adult brain tumor requiring novel therapeutic targets.
  • The role of RNA-binding protein cytoplasmic polyadenylate element-binding protein 2 (CPEB2) in glioma pathogenesis is currently unknown.

Purpose of the Study:

  • To investigate the role and molecular mechanism of CPEB2 in glioma progression.
  • To determine if CPEB2 functions as a tumor suppressor in glioma.

Main Methods:

  • In vitro and in vivo biological and cellular approaches.
  • Overexpression and knockdown of CPEB2 in glioma cells.
  • Analysis of p21 mRNA stability and cell cycle progression.

Main Results:

  • CPEB2 is significantly downregulated in glioma patient cohorts.
  • CPEB2 overexpression inhibits glioma cell proliferation and promotes apoptosis.
  • CPEB2 increases p21 mRNA stability, inducing G1 cell cycle arrest.

Conclusions:

  • CPEB2 acts as a tumor suppressor gene in glioma by targeting p21.
  • Downregulation of CPEB2 is implicated in glioma pathogenesis.
  • CPEB2 may serve as a predictive biomarker for glioma prognosis.

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