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Sheta R, Bachvarova M, Plante M, Renaud MC, Sebastianelli A, Gregoire J, Navarro JM, Perez RB, Masson JY, Bachvarov D. Development of a 3D functional assay and identification of biomarkers, predictive for response of high-grade serous ovarian cancer (HGSOC) patients to poly-ADP ribose polymerase inhibitors (PARPis): targeted therapy. J Transl Med 2020; 18:439. [PMID: 33213473 PMCID: PMC7678187 DOI: 10.1186/s12967-020-02613-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Accepted: 11/06/2020] [Indexed: 11/13/2022] Open
Abstract
Background Poly(ADP-ribose) polymerase inhibitors (PARPis) specifically target homologous recombination deficiency (HRD) cells and display good therapeutic effect in women with advanced-stage BRCA1/2-mutated breast and epithelial ovarian cancer (EOC). However, about 50% of high grade serous ovarian cancers (HGSOC) present with HRD due to epigenetic BRCA1 inactivation, as well as genetic/epigenetic inactivation(s) of other HR genes, a feature known as “BRCAness”. Therefore, there is a potential for extending the use of PARPis to these patients if HR status can be identified. Methods We have developed a 3D (spheroid) functional assay to assess the sensitivity of two PARPis (niraparib and olaparib) in ascites-derived primary cell cultures (AsPCs) from HGSOC patients. A method for AsPCs preparation was established based on a matrix (agarose), allowing for easy isolation and successive propagation of monolayer and 3D AsPCs. Based on this method, we performed cytotoxicity assays on 42 AsPCs grown both as monolayers and spheroids. Results The response to PARPis treatment in monolayer AsPCs, was significantly higher, compared to 3D AsPCs, as 88% and 52% of the monolayer AsPCs displayed sensitivity to niraparib and olaparib respectively, while 66% of the 3D AsPCs were sensitive to niraparib and 38% to olaparib, the latter being more consistent with previous estimates of HRD (40%–60%) in EOC. Moreover, niraparib displayed a significantly stronger cytotoxic effect in both in 3D and monolayer AsPCs, which was confirmed by consecutive analyses of the HR pathway activity (γH2AX foci formation) in PARPis-sensitive and resistant AsPCs. Global gene expression comparison of 6 PARPi-resistant and 6 PARPi-sensitive 3D AsPCs was indicative for the predominant downregulation of numerous genes and networks with previously demonstrated roles in EOC chemoresistance, suggesting that the PARPis-sensitive AsPCs could display enhanced sensitivity to other chemotherapeutic drugs, commonly applied in cancer management. Microarray data validation identified 24 potential gene biomarkers associated with PARPis sensitivity. The differential expression of 7 selected biomarkers was consecutively confirmed by immunohistochemistry in matched EOC tumor samples. Conclusion The application of this assay and the potential biomarkers with possible predictive significance to PARPis therapy of EOC patients now need testing in the setting of a clinical trial.
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Affiliation(s)
- Razan Sheta
- Department of Molecular Medicine, Université Laval, Québec, QC, G1V 0A6, Canada.,Centre de recherche du CHU de Québec, Oncology division, L'Hôtel-Dieu de Québec, 9 rue McMahon, Québec, QC, G1R 3S3, Canada
| | - Magdalena Bachvarova
- Centre de recherche du CHU de Québec, Oncology division, L'Hôtel-Dieu de Québec, 9 rue McMahon, Québec, QC, G1R 3S3, Canada
| | - Marie Plante
- Centre de recherche du CHU de Québec, Oncology division, L'Hôtel-Dieu de Québec, 9 rue McMahon, Québec, QC, G1R 3S3, Canada.,Department of Obstetrics and Gynecology, Université Laval, Québec, QC, G1V 0A6, Canada
| | - Marie-Claude Renaud
- Centre de recherche du CHU de Québec, Oncology division, L'Hôtel-Dieu de Québec, 9 rue McMahon, Québec, QC, G1R 3S3, Canada.,Department of Obstetrics and Gynecology, Université Laval, Québec, QC, G1V 0A6, Canada
| | - Alexandra Sebastianelli
- Centre de recherche du CHU de Québec, Oncology division, L'Hôtel-Dieu de Québec, 9 rue McMahon, Québec, QC, G1R 3S3, Canada.,Department of Obstetrics and Gynecology, Université Laval, Québec, QC, G1V 0A6, Canada
| | - Jean Gregoire
- Centre de recherche du CHU de Québec, Oncology division, L'Hôtel-Dieu de Québec, 9 rue McMahon, Québec, QC, G1R 3S3, Canada.,Department of Obstetrics and Gynecology, Université Laval, Québec, QC, G1V 0A6, Canada
| | - Jamilet Miranda Navarro
- Bioinformatics Department, Center for Genetic Engineering and Biotechnology, 10600, Havana, CP, Cuba
| | - Ricardo Bringas Perez
- Bioinformatics Department, Center for Genetic Engineering and Biotechnology, 10600, Havana, CP, Cuba
| | - Jean-Yves Masson
- Centre de recherche du CHU de Québec, Oncology division, L'Hôtel-Dieu de Québec, 9 rue McMahon, Québec, QC, G1R 3S3, Canada.,Department of Molecular Biology, Medical Biochemistry, and Pathology, Laval University Cancer Research Center, Québec, QC, G1V 0A6, Canada
| | - Dimcho Bachvarov
- Department of Molecular Medicine, Université Laval, Québec, QC, G1V 0A6, Canada. .,Centre de recherche du CHU de Québec, Oncology division, L'Hôtel-Dieu de Québec, 9 rue McMahon, Québec, QC, G1R 3S3, Canada.
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Intrinsic adriamycin resistance in p53-mutated breast cancer is related to the miR-30c/FANCF/REV1-mediated DNA damage response. Cell Death Dis 2019; 10:666. [PMID: 31511498 PMCID: PMC6739306 DOI: 10.1038/s41419-019-1871-z] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 07/15/2019] [Accepted: 07/15/2019] [Indexed: 12/19/2022]
Abstract
Adriamycin(ADR) is still considered to be one of the most effective agents in the treatment of breast cancer (BrCa), its efficacy is compromised by intrinsic resistance or acquire characteristics of multidrug resistance. At present, there are few genetic alterations that can be exploited as biomarkers to guide targeted use of ADR in clinical. Therefore, exploring the determinants of ADR sensitivity is pertinent for their optimal clinical application. TP53 is the most frequently mutated gene in human BrCa, p53 mutation has been reported to be closely related to ADR resistance, whereas the underlying mechanisms that cause endogenous ADR resistance in p53-mutant BrCa cells are not completely understood. The aim of the present study was to investigate the potential roles of miRNA in the response to ADR in p53-mutated breast cancer. Here, we report that BrCa cells expressing mutp53 are more resistant to ADR than cells with wild-type p53 (wtp53). The DNA repair protein- Fanconi anemia complementation group F protein (FANCF) and the translesion synthesis DNA polymerase REV1 protein is frequently abundant in the context of mutant p53 of BrCa. By targeting two key factors, miR-30c increases the sensitivity of BrCa cells to ADR. Furthermore, p53 directly activates the transcription of miR-30c by binding to its promoter. Subsequent analyses revealed that p53 regulates REV1 and FANCF by modulating miR-30c expression. Mutation of the p53 abolished this response. Consistently, reduced miR-30c expression is highly correlated with human BrCa with p53 mutational status and is associated with poor survival. We propose that one of the pathways affected by mutant p53 to increase intrinsic resistance to ADR involves miR-30c downregulation and the consequent upregulation of FANCF and REV1. The novel miRNA-mediated pathway that regulates chemoresistance in breast cancer will facilitate the development of novel therapeutic strategies.
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Chen J, Jia Y, Jia ZH, Zhu Y, Jin YM. Silencing the expression of MTDH increases the radiation sensitivity of SKOV3 ovarian cancer cells and reduces their proliferation and metastasis. Int J Oncol 2018; 53:2180-2190. [PMID: 30226587 DOI: 10.3892/ijo.2018.4541] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Accepted: 06/12/2018] [Indexed: 11/06/2022] Open
Abstract
Ovarian cancer has a high mortality rate among women worldwide. Radiotherapy is considered an effective method of ovarian cancer treatment, however, radioresistance presents a challenge. It is necessary to develop techniques that can increase radiosensitivity in ovarian cancer, and gene therapy is a promising option. The aim of the present study was to investigate the effects of metadherin (MTDH) silencing on the radiosensitivity of ovarian cancer. Ovarian cancer tissues (n=273) and normal ovarian tissues (n=277) were used, as were SKOV3 ovarian cancer cells and the immortalized human ovarian epidermal HOSEpiC cell line. MTT, Transwell and wound-healing assays were performed to assess the proliferation, invasion and migration abilities of the SKOV3 cells. Colony-forming assays and flow cytometry were applied to detect the radiosensitivity and apoptosis of the SKOV3 cells. Nude mouse xenograft models were established to evaluate the effect of MTDH gene silencing on tumor growth and the efficacy of radiotherapy. Ovarian cancer, in tissues and cells, was demonstrated to have a high level of MTDH. Additionally, MTDH silencing was found to significantly inhibit proliferation, migration and invasion, and induce apoptosis in SKOV3 cells, and it was suggested that MTDH depletion significantly increased the sensitivity of the SKOV3 cells to X-ray radiation. MTDH silencing enhanced radiosensitivity and delayed tumor growth in the nude mouse xenograft model. Collectively, the results obtained in the present study suggest the potential role of MTDH silencing as a technique for ameliorating radioresistance in ovarian cancer. The present study provides a promising experimental basis for the improvement of ovarian cancer radiotherapy treatment.
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Affiliation(s)
- Jun Chen
- Department of Obstetrics and Gynecology, The Second Hospital of Jilin University, Changchun, Jilin 130041, P.R. China
| | - Yan Jia
- Department of Obstetrics and Gynecology, The Second Hospital of Jilin University, Changchun, Jilin 130041, P.R. China
| | - Zan-Hui Jia
- Department of Obstetrics and Gynecology, The Second Hospital of Jilin University, Changchun, Jilin 130041, P.R. China
| | - Yu Zhu
- Department of Ophthalmology, FAW General Hospital, The Fourth Hospital of Jilin University, Changchun, Jilin 130011, P.R. China
| | - Yue-Mei Jin
- Department of Obstetrics and Gynecology, The Second Hospital of Jilin University, Changchun, Jilin 130041, P.R. China
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FU YINGZI, YAN YUANYUAN, HE MIAO, XIAO QINGHUAN, YAO WEIFAN, ZHAO LIN, WU HUIZHE, YU ZHAOJIN, ZHOU MINGYI, LV MUTIAN, ZHANG SHANSHAN, CHEN JIANJUN, WEI MINJIE. Salinomycin induces selective cytotoxicity to MCF-7 mammosphere cells through targeting the Hedgehog signaling pathway. Oncol Rep 2015; 35:912-22. [DOI: 10.3892/or.2015.4434] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Accepted: 09/26/2015] [Indexed: 11/06/2022] Open
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Ding JJ, Wang G, Shi WX, Zhou HH, Zhao EF. Promoter Hypermethylation of FANCF and Susceptibility and Prognosis of Epithelial Ovarian Cancer. Reprod Sci 2015; 23:24-30. [DOI: 10.1177/1933719115612136] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Jia-Jia Ding
- Department of Obstetrics and Gynecology, Chinese PLA General Hospital, Beijing, China
| | - Guan Wang
- Department of Gynecology, Tianjin central Hospital of Obstetrics and Gynecology, Tianjin, China
| | - Wen-Xin Shi
- Department of Obstetrics and Gynecology, Chinese PLA General Hospital, Beijing, China
| | - Hong-Hui Zhou
- Department of Obstetrics and Gynecology, Chinese PLA General Hospital, Beijing, China
| | - En-Feng Zhao
- Department of Obstetrics and Gynecology, Chinese PLA General Hospital, Beijing, China
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Zhao L, Li Y, He M, Song Z, Lin S, Yu Z, Bai X, Wang E, Wei M. The Fanconi anemia pathway sensitizes to DNA alkylating agents by inducing JNK-p53-dependent mitochondrial apoptosis in breast cancer cells. Int J Oncol 2014; 45:129-38. [PMID: 24789349 DOI: 10.3892/ijo.2014.2400] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2014] [Accepted: 03/14/2014] [Indexed: 11/05/2022] Open
Abstract
The Fanconi anemia/BRCA (FA/BRCA) DNA damage repair pathway plays a pivotal role in the cellular response to DNA alkylating agents and greatly influences drug response in cancer treatment. However, the molecular mechanisms underlying the FA/BRCA pathway reversed resistance have received limited attention. In the present study, we investigated the effect of Fanconi anemia complementation group F protein (FANCF), a critical factor of the FA/BRCA pathway, on cancer cell apoptosis induced by DNA alkylating agents such as mitomycin c (MMC). We found that FANCF shRNA potentiated MMC-induced cytotoxicity and apoptosis in MCF-7 and MDA-MB-231 breast cancer cells. At a mechanistic level, FANCF shRNA downregulated the anti-apoptotic protein Bcl-2 and upregulated the pro-apoptotic protein Bax, accompanied by release of cyt-c and smac into the cytosol in MMC-treated cells. Furthermore, activation of caspase-3 and -9, other than caspase-8, cleavage of poly(ADP ribose) polymerase (PARP), and a decrease of mitochondrial membrane potential (MMP) indicated that involvement of the mitochondrial apoptotic pathway in FANCF silencing of MMC-treated breast cancer cells. A decrease in IAP family proteins XIAP and survivin were also observed following FANCF silencing in MMC-treated breast cancer cells. Notably, FANCF shRNA was able to increase p53 levels through activation of the JNK pathway in MMC-treated breast cancer cells. Furthermore, p53 inhibition using pifithrin-α abolished the induction of caspase-3 and PARP by FANCF shRNA and MMC, indicating that MMC-induced apoptosis is substantially enhanced by FANCF shRNA via p53-dependent mechanisms. To our knowledge, we provide new evidence for the potential application of FANCF as a chemosensitizer in breast cancer therapy.
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Affiliation(s)
- Lin Zhao
- Department of Pharmacology, School of Pharmaceutical Science, China Medical University, Heping Ward, Shenyang, Liaoning 110001, P.R. China
| | - Yanlin Li
- Department of Pharmacology, School of Pharmaceutical Science, China Medical University, Heping Ward, Shenyang, Liaoning 110001, P.R. China
| | - Miao He
- Department of Pharmacology, School of Pharmaceutical Science, China Medical University, Heping Ward, Shenyang, Liaoning 110001, P.R. China
| | - Zhiguo Song
- Department of Pharmacology, School of Pharmaceutical Science, China Medical University, Heping Ward, Shenyang, Liaoning 110001, P.R. China
| | - Shu Lin
- Department of Pharmacology, School of Pharmaceutical Science, China Medical University, Heping Ward, Shenyang, Liaoning 110001, P.R. China
| | - Zhaojin Yu
- Department of Pharmacology, School of Pharmaceutical Science, China Medical University, Heping Ward, Shenyang, Liaoning 110001, P.R. China
| | - Xuefeng Bai
- Department of Pharmacology, School of Pharmaceutical Science, China Medical University, Heping Ward, Shenyang, Liaoning 110001, P.R. China
| | - Enhua Wang
- Institute of Pathology and Pathophysiology, China Medical University, Heping Ward, Shenyang, Liaoning 110001, P.R. China
| | - Minjie Wei
- Department of Pharmacology, School of Pharmaceutical Science, China Medical University, Heping Ward, Shenyang, Liaoning 110001, P.R. China
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