The significance of interferon gamma inducible protein 16 (IFI16) expression in drug resistant ovarian cancer cell lines - 27/05/22
Abstract |
Background |
Inherent or developed during treatment drug resistance is the main reason for the low effectiveness of chemotherapy in ovarian cancer. IFI16 is a cytoplasmic/nuclear protein involved in response to virus’s infection and cell cycle arrest associated with the cellular senescence.
Methods |
Here we performed a detailed IFI16 expression analysis in ovarian cancer cell lines sensitive (A2780) and resistant to doxorubicin (DOX) (A2780DR1 and A2780DR2) and paclitaxel (PAC) (A2780PR1). IFI16 mRNA level, protein level in the nuclear and cytoplasmic fraction (Western blot analysis), the protein expression in cancer cells and nuclei (immunofluorescence analysis) and cancer patient lesions (immunohistochemistry) were performed in this study.
Results |
We observed upregulation of IFI16 expression in drug resistant cell lines with dominant cytoplasmic localization in DOX-resistant cell lines and nuclear one in the PAC-resistant cell line. The most abundantly overexpressed isoforms of IFI16 were IFI16A and IFI16C. Finally, an analysis of a histological type of ovarian cancer (immunohistochemistry) showed expression in serous ovarian cancer.
Conclusions |
Expression of IFI16 in drug-resistant cell lines suggests its role in drug resistance development in ovarian cancer. Expression in serous ovarian cancer suggests its role in the pathogenesis of this histological type.
Le texte complet de cet article est disponible en PDF.Graphical Abstract |
Highlights |
• | Expression of IFI16 gene and protein in drug sensitive and drug resistant ovarian cancer cell lines was examined. |
• | Expression of IFI16 isoforms A and C but not B seems to be related to drug resistance development. |
• | In DOX resistant cell lines IFI16 was present in cytoplasm and nucleus, but in PAC resistant cell line dominated nuclear localization. |
• | Overexpression of isoforms A and C is not related to known physiological functions of IFI16. |
• | IFI16 isoforms A and C seem to be involved in drug resistance. |
Abbreviations : ECM, IFI16, DOX, PAC, A2780DR, A2780PR
Keywords : Interferon gamma inducible protein 16 (IFI16), Isoforms, Ovarian cancer cell lines, Drug resistance, Histological type
Plan
Vol 150
Article 113036- juin 2022 Retour au numéroBienvenue sur EM-consulte, la référence des professionnels de santé.
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