Role and mechanism of KIAA1429 in regulating cellular ferroptosis and radioresistance in colorectal cancer
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View abstract on PubMed
Summary
This summary is machine-generated.KIAA1429 protein promotes colorectal cancer radioresistance by upregulating lncRNA EBLN3P, which enhances KIAA1429 expression via sponging miR-153-3p, ultimately suppressing ferroptosis and increasing cancer cell survival after radiation.
Area Of Science
- Oncology
- Molecular Biology
- Cancer Research
Background
- Colorectal cancer (CRC) presents a significant global health challenge due to its high incidence and mortality.
- Radioresistance remains a major obstacle in effective CRC treatment, necessitating research into underlying molecular mechanisms.
- Understanding the role of specific proteins and non-coding RNAs in CRC radioresistance is crucial for developing targeted therapies.
Purpose Of The Study
- To investigate the function of KIAA1429 (vir-like m6A methyltransferase associated [VIRMA]) in the radioresistance of colorectal cancer cells.
- To elucidate the molecular pathway involving KIAA1429, lncRNA EBLN3P, and miR-153-3p in regulating ferroptosis and radioresistance.
- To determine the therapeutic potential of targeting this pathway for overcoming CRC radioresistance.
Main Methods
- Culturing of CRC cells and a radioresistant cell line to assess KIAA1429 expression levels.
- KIAA1429 knockdown experiments to analyze effects on radioresistance, ferroptosis, and oxidative stress markers (e.g., γ-H2AX).
- Analysis of the regulatory network including KIAA1429, lncRNA EBLN3P, and miR-153-3p using molecular binding assays and functional studies.
Main Results
- KIAA1429 and lncRNA EBLN3P were found to be highly expressed in CRC, with altered expression in radioresistant cells.
- KIAA1429 knockdown significantly reduced radioresistant cell survival post-irradiation, increased ferroptosis and oxidative stress, an effect reversed by a ferroptosis inhibitor.
- A feedback loop was identified where KIAA1429-mediated m6A modification upregulates lncRNA EBLN3P, which in turn enhances KIAA1429 expression by sequestering miR-153-3p.
Conclusions
- KIAA1429 plays a critical role in promoting colorectal cancer radioresistance.
- The KIAA1429/lncRNA EBLN3P/miR-153-3p axis regulates ferroptosis, thereby influencing CRC cell survival under radiation therapy.
- Targeting KIAA1429 or modulating this regulatory axis may represent a promising strategy to enhance the efficacy of radiotherapy for colorectal cancer.
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