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Targeting POLE2 Creates a Novel Vulnerability in Renal Cell Carcinoma via Modulating Stanniocalcin 1.

Chuanjie Zhang1, Yan Shen2, Lili Gao3

  • 1Department of Urology, Shanghai Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China.

Frontiers in Cell and Developmental Biology
|March 1, 2021
PubMed
Summary

DNA polymerase epsilon subunit 2 (POLE2) is overexpressed in kidney cancer, driving tumor growth and poor prognosis. Targeting POLE2 and its downstream gene STC1 may offer new therapeutic strategies for renal cell carcinoma (RCC).

Keywords:
POLE2migrationproliferationrenal cell carcinomastanniocalcin 1

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Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • Renal cell carcinoma (RCC) is a significant global health concern.
  • Understanding the molecular drivers of RCC is crucial for developing effective therapies.

Purpose of the Study:

  • To investigate the biological roles and mechanisms of DNA polymerase epsilon subunit 2 (POLE2) in RCC.
  • To explore POLE2 as a potential therapeutic target for RCC.

Main Methods:

  • Analysis of POLE2 expression in TCGA-KIRC and ICGC databases.
  • Immunohistochemistry, gene knockdown (in vitro/in vivo), cell viability, migration, apoptosis assays.
  • Microarray, co-immunoprecipitation, and Western blot to elucidate molecular mechanisms.

Main Results:

  • POLE2 is overexpressed in RCC and linked to poor prognosis.
  • POLE2 knockdown inhibits RCC cell proliferation and migration, and promotes apoptosis.
  • POLE2 regulates stanniocalcin 1 (STC1) and affects key cancer-related signaling pathways.

Conclusions:

  • POLE2 promotes RCC progression by regulating STC1.
  • The POLE2-STC1 axis represents a potential therapeutic target for renal cell carcinoma.