Abstract
Purpose
Ovarian cancer (OC) is a common malignancy, and IFN-γ, a multifunctional cytokine, is unveiled to impede the multiplication and enhance apoptosis in diverse tumor cells in previous research. Nonetheless, its function and mechanism in OC are blurred.
Methods
OC cell lines SKOV3 and OVCAR3 were dealt with different concentrations (0–40 ng/ml) of IFN-γ. CCK-8 experiment was utilized to examine cell multiplication; Flow cytometry was executed to detect apoptosis and cell cycle; Wound healing assay was utilized to detect cell migration; and Transwell experiment was implemented to examine cell invasion. qRT-PCR analysis was applied to detect STAT5, STAT3, JAK2 and JAK3 mRNA expression in OC cell lines. Western blot experiment was applied to detect the protein and phosphorylation levels of SOCS1, STAT5 and STAT3.
Results
IFN-γ suppressed OC cell multiplication in a concentration-dependent manner. Relative to the control group, IFN-γ restrained OC cell migration, invasion, enhanced apoptosis and prevented cell transformation from G0/G1 to S phase. Further analysis revealed that IFN-γ up-modulated SOCS1 expression and impeded STAT5 and STAT3 protein phosphorylation levels, and knockdown of SOCS1 partially counteracted the inhibitory effect of IFN-γ on STAT5 and STAT3 protein phosphorylation levels.
Conclusion
IFN-γ represses OC progression by facilitating SOCS1 to suppress STAT3 and STAT5 protein phosphorylation.
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Funding
This work was supported by Suzhou science and technology development plan (application basis) (SYS201729) and Jiangsu province maternal and child health research project (F201709).
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AHG designed the study and drafted the manuscript. AHG and YRH were responsible for the collection and analysis of the experimental data. YRH and WPZ revised the manuscript critically for important intellectual content. All authors read and approved the final manuscript.
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Gao, A.H., Hu, Y.R. & Zhu, W.P. IFN-γ inhibits ovarian cancer progression via SOCS1/JAK/STAT signaling pathway. Clin Transl Oncol 24, 57–65 (2022). https://doi.org/10.1007/s12094-021-02668-9
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DOI: https://doi.org/10.1007/s12094-021-02668-9