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Author Spotlight: Exploring the Role of FAM83A in Cervical Cancer
Published on: February 9, 2024
CDYL loss promotes cervical cancer aggression by increasing PD-L1 expression via the suppression of IRF2BP2
Ying Cui1, Yuxi Zhao2, Guihua Shen1
1Department of Obstetrics and Gynecology, National Center of Gerontology/Beijing Hospital, Beijing 100730, PR China.
Background:
Recurrent or metastatic cervical cancer have an extremely low 5-year survival rates about 17% due to limited therapeutic options. CDYL plays a critical role in multiple cancer development, as an oncogene or tumor suppressor in a context-dependent manner. However, the role of CDYL in cervical carcinogenesis has not yet been explored.
Methods:
CDYL expression was examined in cervical cancer and cell lines. The effect of CDYL/IRF2BP2/PD-L1 axis on malignant phenotypes of cervical cancer cells were tested with gain-of-function experiments. A mouse model of cervical cancer was developed to validate the in vitro results.
Results:
Clinical data analysis revealed that CDYL was downregulated and associated with a poor prognosis in cervical cancer patients. CDYL overexpression suppressed cervical cancer cells proliferation and invasion in vitro and vivo assays and enhanced the immune response by decreasing PD-L1 expression and reversing the tumor immunosuppressing microenvironment. Mechanistically, CDYL inhibited the PD-L1 expression through transcriptionally suppressing IRF2BP2 in cervical cancer cells.
Conclusions:
Taken together, our findings established the crucial role of CDYL in cervical carcinogenesis and sensitivity for immune checkpoint blockade therapy, and supported the hypothesis that CDYL could be a potential novel immunotherapy response predictive biomarker for cervical cancer patients.
Insights
CDYL acts as a tumor suppressor in cervical cancer, inhibiting cancer growth and improving immune response. Its downregulation predicts poor prognosis, suggesting CDYL as a potential biomarker for immunotherapy.
Area of Science:
- Oncology
- Immunology
- Molecular Biology
Background:
- Recurrent or metastatic cervical cancer has poor prognosis (17% 5-year survival) due to limited therapies.
- CDYL's role in cervical cancer is unexplored, despite its context-dependent function in other cancers.
Purpose of the Study:
- Investigate CDYL's role in cervical cancer development.
- Determine CDYL's impact on malignant phenotypes and immune microenvironment.
- Evaluate CDYL as a predictive biomarker for immunotherapy response.
Main Methods:
- Analyzed CDYL expression in cervical cancer tissues and cell lines.
- Performed gain-of-function experiments to assess CDYL/IRF2BP2/PD-L1 axis effects.
- Validated findings using a mouse model of cervical cancer.
Main Results:
- CDYL is downregulated in cervical cancer, correlating with poor prognosis.
- CDYL overexpression suppressed tumor growth, invasion, and reversed immunosuppression by reducing PD-L1.
- CDYL suppresses PD-L1 via transcriptional inhibition of IRF2BP2.
Conclusions:
- CDYL is crucial in cervical carcinogenesis and immunotherapy sensitivity.
- CDYL shows potential as a novel predictive biomarker for cervical cancer immunotherapy response.
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