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Author Spotlight: Unveiling the Role of TMOD3 in Platinum Resistance and Immune Infiltration in Ovarian Cancer
Published on: August 2, 2024
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CD24 induced cellular quiescence-like state and chemoresistance in ovarian cancer cells via miR-130a/301a-dependent
Yeonsue Jang1, Suki Kang1, Hyun Ho Han2,3
1Department of Pathology, Yonsei University College of Medicine, Seoul, Republic of Korea.
Cell Death Discovery
|February 15, 2024
Summary
Cancer stem cells drive ovarian cancer recurrence. CD24 regulates microRNAs (miRNAs) like miR-130a and miR-301a, which promote chemoresistance and quiescence, suggesting a new therapeutic target for ovarian cancer.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- Cancer stem-like cells (CSCs) are implicated in ovarian cancer recurrence.
- CD24 is a marker for ovarian CSCs and influences microRNA (miRNA) expression.
- CD24-regulated miRNAs may mediate CSC phenotypes in ovarian cancer.
Purpose of the Study:
- To investigate the role of CD24-regulated miRNAs in ovarian cancer.
- To identify specific miRNAs and their targets involved in CSC phenotypes.
- To elucidate the signaling pathway linking CD24, miRNAs, and chemoresistance.
Main Methods:
- miRNA transcriptome analysis of CD24-high and CD24-low ovarian cancer cell clones.
- Validation of miRNA expression changes in response to CD24 manipulation.
- Target gene identification (CDK19) and functional analysis of miR-130a and miR-301a.
- Investigation of the regulatory mechanism of CD24 on miRNA expression (STAT4, YY1, Src, FAK).
- Correlation analysis of CD24, miRNA, and CDK19 expression in patient tissues.
Main Results:
- 94 miRNAs were differentially expressed between CD24-high and CD24-low clones.
- CD24 overexpression upregulated specific miRNAs (e.g., miR-130a, miR-301a), while knockdown downregulated them.
- miR-130a and miR-301a target CDK19, inducing cellular quiescence and platinum resistance.
- CD24 regulates miR-130a/301a via STAT4/YY1 phosphorylation mediated by Src/FAK.
- miR-130a/301a expression positively correlates with CD24 and negatively with CDK19 in ovarian cancer tissues.
Conclusions:
- CD24-mediated upregulation of miR-130a and miR-301a contributes to cellular quiescence and platinum chemoresistance in ovarian cancer.
- The CD24-miR-130a/301a-CDK19 signaling axis represents a potential prognostic marker and therapeutic target for ovarian cancer recurrence.
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