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Author Spotlight: Tracing the Ferroptotic Signatures and Cell Death Dynamics in Medulloblastoma for Advanced Therapeutics
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Deubiquitylase USP52 Promotes Bladder Cancer Progression by Modulating Ferroptosis through Stabilizing SLC7A11/xCT.

Jianmin Liu1, Yongwen Luo1, Siming Chen1

  • 1Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan, 430071, China.

Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|October 11, 2024
PubMed
Summary
This summary is machine-generated.

Researchers identified USP52 as a key regulator of ferroptosis in bladder cancer (BLCA). Inhibiting USP52 increases ferroptosis, suppressing BLCA progression and offering new therapeutic strategies for this prevalent cancer.

Keywords:
SLC7A11/xCTUSP52bladder cancerdeubiquitylasesferroptosis

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Area of Science:

  • Oncology
  • Molecular Biology
  • Biochemistry

Background:

  • Bladder cancer (BLCA) presents significant global health challenges due to high mortality and economic impact.
  • Understanding BLCA's molecular mechanisms is vital for effective clinical management.
  • Ferroptosis, a distinct cell death pathway driven by lipid peroxidation, is implicated in cancer, but its role in BLCA is not fully understood.

Purpose of the Study:

  • To investigate the role and regulation of ferroptosis in bladder cancer.
  • To identify key molecular players influencing ferroptosis sensitivity in BLCA.
  • To explore potential therapeutic targets for BLCA based on ferroptosis pathways.

Main Methods:

  • Single-cell RNA sequencing data re-analysis to observe ferroptosis patterns in BLCA.
  • Unbiased siRNA screening of deubiquitylases (DUBs) to identify ferroptosis regulators.
  • In vitro and in vivo experiments to assess the functional impact of USP52 on ferroptosis and BLCA progression.
  • Protein interaction and ubiquitination assays to elucidate the mechanism of USP52 action.

Main Results:

  • A decrease in ferroptosis-high cancer cells was observed with BLCA advancement.
  • USP52 was identified as a critical regulator of ferroptosis in BLCA.
  • USP52 depletion enhances ferroptosis by stabilizing xCT, impeding glutathione synthesis and increasing lipid peroxidation.
  • USP52 positively correlates with xCT expression in clinical BLCA samples, linked to aggressive disease.
  • Combined USP52 inhibition and ferroptosis inducers (IKE) synergistically suppressed BLCA progression in vivo.

Conclusions:

  • The USP52-xCT axis is a crucial regulator of ferroptosis in bladder cancer.
  • USP52 stabilizes xCT, influencing ferroptosis susceptibility and BLCA progression.
  • Targeting USP52 and employing ferroptosis inducers presents a promising therapeutic strategy for bladder cancer.