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Luo L, Xu N, Liu Y, Zhong S, Yang S, Chen X. Prognostic factors and novel nomograms for overall survival and cancer specific survival of malignant ovarian cancer patients with bone metastasis: A SEER-based study. Int J Gynaecol Obstet 2024; 165:176-187. [PMID: 38013509 DOI: 10.1002/ijgo.15261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 10/24/2023] [Accepted: 11/08/2023] [Indexed: 11/29/2023]
Abstract
OBJECTIVE Ovarian cancer (OC) is a frequent and fatal disease in women, and bone metastasis of ovarian cancer (OCBM) leads to a poor survival trend. This study aimed to determine the factors which influence overall survival (OS) and cancer-specific survival (CSS) of OCBM patients and to develop prognostic predictive models. METHODS Data of OCBM patients were stratified from the Surveillance, Epidemiology and End Results database from 2010 to 2017 and were randomly divided into training and testing datasets (7:3). Prognostic factors were identified by Cox regression analyses and nomograms were then developed. Nomogram models were examined on the discriminative ability and accuracy by calibration plots, Brier score (BS), and time-dependent receiver operating characteristic (ROC) curves. Decision curve analyses (DCA) was used for estimation of the clinical benefit of nomogram models. RESULTS Grade, tumor size, tumor metastasis (liver, lung), primary site surgery, chemotherapy, and systemic therapy were realized as independent prognostic factors for OS and CSS, respectively. Agreement between the actual and predicted outcomes was proved by calibration plots. Nomograms performed well in OS and CSS predictions, as shown by area under the ROC curves (AUCs) and BSs for testing dataset as follows: for OS, 3-/6-/12-month AUCs and BSs were 0.778/0.788/0.822 and 19.0/18.5/15.4, respectively; for CSS, 3-/6-/12-month AUCs and BSs were 0.799/0.806/0.832 and 18.1/18.0/15.4, respectively. DCA suggested an agreeable clinical benefit of both nomograms. CONCLUSION The nomograms developed for OCBM patients' survival prediction were proved to be accurate, efficient, and clinically beneficial, which were further deployed as web-based calculators to help in clinical decision making and future studies.
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Affiliation(s)
- Ling Luo
- Clinical Anatomy & Reproductive Medicine Application Institute, Hengyang Medical College, University of South China, Hengyang, Hunan, China
- Shaoyang First People's Hospital Graduate Joint Training Innovation Base, University of South China, Hengyang, Hunan, China
| | - Ningze Xu
- Department of Obstetrics and Gynecology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Yuyang Liu
- Department of School of Medicine, Tongji University, Shanghai, China
| | - Sen Zhong
- Shanghai Tongji Hospital, Tongji University School of Medicine, Shanghai, China
| | - Sheng Yang
- Department of Orthopedic, Spinal Pain Research Institute, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Xi Chen
- Clinical Anatomy & Reproductive Medicine Application Institute, Hengyang Medical College, University of South China, Hengyang, Hunan, China
- Shaoyang First People's Hospital Graduate Joint Training Innovation Base, University of South China, Hengyang, Hunan, China
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Jank P, Leichsenring J, Kolb S, Hoffmann I, Bischoff P, Kunze CA, Dragomir MP, Gleitsmann M, Jesinghaus M, Schmitt WD, Kulbe H, Sers C, Stenzinger A, Sehouli J, Braicu IE, Westhoff C, Horst D, Denkert C, Gröschel S, Taube ET. High EVI1 and PARP1 expression as favourable prognostic markers in high-grade serous ovarian carcinoma. J Ovarian Res 2023; 16:150. [PMID: 37525239 PMCID: PMC10388497 DOI: 10.1186/s13048-023-01239-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Accepted: 07/16/2023] [Indexed: 08/02/2023] Open
Abstract
BACKGROUND Mechanisms of development and progression of high-grade serous ovarian cancer (HGSOC) are poorly understood. EVI1 and PARP1, part of TGF-ß pathway, are upregulated in cancers with DNA repair deficiencies with DNA repair deficiencies and may influce disease progression and survival. Therefore we questioned the prognostic significance of protein expression of EVI1 alone and in combination with PARP1 and analyzed them in a cohort of patients with HGSOC. METHODS For 562 HGSOC patients, we evaluated EVI1 and PARP1 expression by immunohistochemical staining on tissue microarrays with QuPath digital semi-automatic positive cell detection. RESULTS High EVI1 expressing (> 30% positive tumor cells) HGSOC were associated with improved progression-free survival (PFS) (HR = 0.66, 95% CI: 0.504-0.852, p = 0.002) and overall survival (OS) (HR = 0.45, 95% CI: 0.352-0.563, p < 0.001), including multivariate analysis. Most interestingly, mutual high expression of both proteins identifies a group with particularly good prognosis. Our findings were proven technically and clinically using bioinformatical data sets for single-cell sequencing, copy number variation and gene as well as protein expression. CONCLUSIONS EVI1 and PARP1 are robust prognostic biomarkers for favorable prognosis in HGSOC and imply further research with respect to their reciprocity.
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Affiliation(s)
- Paul Jank
- Institute of Pathology, Philipps-University Marburg, University Hospital Marburg (UKGM), Marburg, Germany
| | - Jonas Leichsenring
- Institute of Pathology, Zytologie Und Molekulare Diagnostik, REGIOMED, Klinikum Coburg, Coburg, Germany
| | - Svenja Kolb
- Department of Gynecology, Vivantes Netzwerk Für Gesundheit GmbH Berlin, Vivantes Hospital Neukölln, Rudower Straße 48, 12351, Berlin, Germany
| | - Inga Hoffmann
- Institute of Pathology, Charité Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt Universität Zu Berlin, CCM, Charitéplatz 1, 10117, Berlin, Germany
| | - Philip Bischoff
- Institute of Pathology, Charité Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt Universität Zu Berlin, CCM, Charitéplatz 1, 10117, Berlin, Germany
| | - Catarina Alisa Kunze
- Institute of Pathology, Charité Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt Universität Zu Berlin, CCM, Charitéplatz 1, 10117, Berlin, Germany
| | - Mihnea P Dragomir
- Institute of Pathology, Charité Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt Universität Zu Berlin, CCM, Charitéplatz 1, 10117, Berlin, Germany
| | - Moritz Gleitsmann
- Institute of Pathology, Philipps-University Marburg, University Hospital Marburg (UKGM), Marburg, Germany
| | - Moritz Jesinghaus
- Institute of Pathology, Philipps-University Marburg, University Hospital Marburg (UKGM), Marburg, Germany
| | - Wolfgang D Schmitt
- Institute of Pathology, Charité Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt Universität Zu Berlin, CCM, Charitéplatz 1, 10117, Berlin, Germany
| | - Hagen Kulbe
- Tumorbank Ovarian Cancer Network, Charité, Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität Zu Berlin, and Berlin Institute of Health, 10117, Berlin, Germany
- Department of Gynecology, European Competence Center for Ovarian Cancer, Charité Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität Zu Berlin, and Berlin Institute of Health, 10117, Berlin, Germany
| | - Christine Sers
- Institute of Pathology, Charité Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt Universität Zu Berlin, CCM, Charitéplatz 1, 10117, Berlin, Germany
| | | | - Jalid Sehouli
- Tumorbank Ovarian Cancer Network, Charité, Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität Zu Berlin, and Berlin Institute of Health, 10117, Berlin, Germany
- Department of Gynecology, European Competence Center for Ovarian Cancer, Charité Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität Zu Berlin, and Berlin Institute of Health, 10117, Berlin, Germany
| | - Ioana Elena Braicu
- Tumorbank Ovarian Cancer Network, Charité, Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität Zu Berlin, and Berlin Institute of Health, 10117, Berlin, Germany
- Department of Gynecology, European Competence Center for Ovarian Cancer, Charité Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität Zu Berlin, and Berlin Institute of Health, 10117, Berlin, Germany
| | - Christina Westhoff
- Institute of Pathology, Philipps-University Marburg, University Hospital Marburg (UKGM), Marburg, Germany
| | - David Horst
- Institute of Pathology, Charité Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt Universität Zu Berlin, CCM, Charitéplatz 1, 10117, Berlin, Germany
| | - Carsten Denkert
- Institute of Pathology, Philipps-University Marburg, University Hospital Marburg (UKGM), Marburg, Germany
| | | | - Eliane T Taube
- Institute of Pathology, Charité Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt Universität Zu Berlin, CCM, Charitéplatz 1, 10117, Berlin, Germany.
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Zuo WW, Zhao CF, Li Y, Sun HY, Ma GM, Liu YP, Kang S. High Expression of PARP1 in Tumor and Stroma Cells Predicts Different Prognosis and Platinum Resistance in Patients With Advanced Epithelial Ovarian Cancer. Front Oncol 2022; 12:931445. [PMID: 35875162 PMCID: PMC9301997 DOI: 10.3389/fonc.2022.931445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Accepted: 06/06/2022] [Indexed: 11/13/2022] Open
Abstract
Objective This study aimed to explore the roles of PARP1 mRNA and protein expression in platinum resistance and prognosis of EOC patients, and reveal the different roles of PARP1 protein in epithelial tumor and stroma cells. Methods The PARP1 mRNA expression of the EOC tissues was examined by RT-qPCR. The impacts of PARP1 expression on prognosis were measured by Kaplan-Meier and Cox regression. Receiver operating characteristic (ROC) curve analysis was employed for calculating the diagnostic value of PARP1 on platinum resistance. The microarray of formalin-fixed, paraffin-embedded (FFPE) tissues was processed for multiplex immunofluorescence to detect the protein levels of PARP1 and cytokeratin (CK). Results The PARP1mRNA expression of EOC patients was higher in the platinum-resistant group compared with the sensitive group (P<0.01). Kaplan-Meier analysis demonstrated that high PARP1 mRNA expression was associated with poor survival of EOC patients. In Cox regression analyses, high PARP1 mRNA expression independently predicted poor prognosis (P=0.001, HR=2.076, 95%CI=1.373-3.140). The area under the ROC curve of PARP1 mRNA for predicting the platinum resistance in EOC patients was 0.649, with a sensitivity of 0.607 and specificity of 0.668. Furthermore, the protein expression of PARP1 was higher in the platinum-resistant group than in the sensitive group (P<0.01) and associated with a worse prognosis. Additionally, according to CK labeling, we observed that enhanced expression of PARP1 in the CK+ region was associated with platinum resistance and lower survival, but in CK- region, it predicted a good prognosis and platinum sensitivity. Conclusion PARP1 may be a potential biomarker to predict platinum resistance and prognosis for EOC patients, exerting different roles on epithelial tumor and stromal cells.
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Affiliation(s)
- Wei-Wei Zuo
- Department of Gynecology, Fourth Hospital, Hebei Medical University, Shijiazhuang, China
- Department of Gynecology, Tangshan People’s Hospital, Tangshan, China
| | - Chun-Fang Zhao
- Department of Histoplasty and Embryology, Hebei Medical University, Shijiazhuang, China
| | - Yan Li
- Department of Molecular Biology, Fourth Hospital, Hebei Medical University, Shijiazhuang, China
| | - Hai-Yan Sun
- Department of Gynecology, Fourth Hospital, Hebei Medical University, Shijiazhuang, China
| | - Guo-Ming Ma
- Department of gastrointestinal surgery, Tangshan People’s Hospital, Tangshan, China
| | - Yue-Ping Liu
- Department of Pathology, Hebei Medical University, Fourth Hospital, Shijiazhuang, China
| | - Shan Kang
- Department of Gynecology, Fourth Hospital, Hebei Medical University, Shijiazhuang, China
- *Correspondence: Shan Kang,
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Zhang J, Wei Z, Zhang Z. Correlation of Poly (adenosine diphosphate[ADP]-ribose) Polymerase Expression and Prognosis in Ovarian Cancer: A Systematic Review and Meta-analysis. J Gynecol Obstet Hum Reprod 2022; 51:102344. [PMID: 35218983 DOI: 10.1016/j.jogoh.2022.102344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 01/28/2022] [Accepted: 02/22/2022] [Indexed: 10/19/2022]
Abstract
PURPOSE This meta-analysis evaluated the correlation between poly (adenosine diphosphate [ADP]-ribose) polymerase (PARP) expression and prognosis in patients with ovarian cancer. METHODS Eligible studies were extracted from the electronic databases of PubMed, Web of Science, and EMBASE until 1 August 2019. The included studies investigated the correlation between PARP expression and clinical outcomes in patients with ovarian cancer. Clinical outcomes are overall survival (OS) and progression free survival (PFS). The clinical data of patients, such as clinicopathologic characteristics and survival, were analyzed. The language was limited to English, and studies conducted at the cellular level, animal studies, and non-original research were excluded. The odds ratios (ORs) and hazard ratios (HRs) with 95% confidence intervals (CIs) were used for this meta-analysis. RESULTS A total of 9 eligible studies involving 1230 patients were included in our meta-analysis. Based on the analysis, higher PARP expression was correlated with worse overall survival [OS] (HR,1.64; 95% CI, 1.08-2.49; P = 0.020) in the univariate analysis, whereas results from multivariate analysis indicated that PARP overexpression wasn't statistically associated with worse OS (HR, 1.36; 95% CI, 0.98-1.90; P = 0.069). Moreover, the pooled results revealed that patients with PARP overexpression were not associated with worse histologic grade (OR,2.22; 95% CI, 0.98-5.02; P = 0.06). CONCLUSION PARP overexpression maybe associated with poor prognosis and survival in patients with ovarian cancer. The patients with PARP over expression were not tended to have a worse histologic grade. Findings require further validation.
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Affiliation(s)
- Jiahui Zhang
- Oncology Department, People's Hospital of LongHua, ShenZhen, Guang Dong, 518109, China.
| | - Zhigong Wei
- Oncology Department, West China School of Medicine, Sichuan University, Chengdu, Sichuan, 610041, China
| | - Zhifu Zhang
- Blood Department, People's Hospital of LongHua, ShenZhen, GuangDong, 518109, China
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Thakur N, Yim K, Abdul-Ghafar J, Seo KJ, Chong Y. High Poly(ADP-Ribose) Polymerase Expression Does Relate to Poor Survival in Solid Cancers: A Systematic Review and Meta-Analysis. Cancers (Basel) 2021; 13:5594. [PMID: 34830749 PMCID: PMC8615806 DOI: 10.3390/cancers13225594] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2021] [Revised: 11/03/2021] [Accepted: 11/05/2021] [Indexed: 12/20/2022] Open
Abstract
Poly (ADP-ribose) polymerase (PARP) is a DNA damage repair protein, and its inhibitors have shown promising results in clinical trials. The prognostic significance of PARP is inconsistent in studies of various cancers. In the present study, we conducted a systematic review and meta-analysis to reveal the prognostic and clinicopathological significance of PARP expression in multiple solid cancers. We searched the MEDLINE, EMBASE, and Cochrane databases for relevant research articles published from 2005 to 2021. The pooled hazard ratio (HR) with confidence interval (CI) was calculated to investigate the relationship between PARP expression and survival in multiple solid cancers. In total, 10,667 patients from 31 studies were included. A significant association was found between higher PARP expression and overall survival (OS) (HR = 1.54, 95% CI = 1.34-1.76, p < 0.001), disease-free survival (DFS) (HR = 1.15, 95% CI = 1.10-1.21, p < 0.001), and progression-free survival (PFS) (HR = 1.05, 95% CI = 1.03-1.08, p < 0.001). Subgroup analyses showed that PARP overexpression was significantly related to poor OS in patients with breast cancers (HR = 1.38, 95% CI = 1.28-1.49, p < 0.001), ovary cancers (HR = 1.21, 95% CI = 1.10-1.33, p = 0.001), lung cancers (HR = 2.11, 95% CI = 1.29-3.45, p = 0.003), and liver cancers (HR = 3.29, 95% CI = 1.94-5.58, p < 0.001). Regarding ethnicity, Asian people have almost twice their worst survival rate compared to Caucasians. The pooled odds ratio analysis showed a significant relationship between higher PARP expression and larger tumour size, poor tumour differentiation, lymph node metastasis, distant metastasis, higher TNM stage and lymphovascular invasion, and positive immunoreactivity for Ki-67, BRCA1, and BRCA2. In addition, nuclear expression assessed by the QS system using Abcam and Santa Cruz Biotechnology seems to be the most commonly used and reproducible IHC method for assessing PARP expression. This meta-analysis revealed that higher PARP expression was associated with a worse OS, DFS, and PFS in patients with solid cancers. Moreover, inhibition of this pathway through its specific inhibitors may extend the survival of patients with higher PARP expression.
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Affiliation(s)
| | | | | | | | - Yosep Chong
- Department of Hospital Pathology, College of Medicine, The Catholic University of Korea, Seoul 07345, Korea; (N.T.); (K.Y.); (J.A.-G.); (K.J.S.)
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6
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Huang YH, Yin SJ, Gong YY, Li ZR, Yang Q, Fan YX, Zhou T, Meng R, Wang P, He GH. PARP1 as a prognostic biomarker for human cancers: a meta-analysis. Biomark Med 2021; 15:1563-1578. [PMID: 34651514 DOI: 10.2217/bmm-2020-0891] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Aim: A comprehensive meta-analysis was carried out to evaluate the association between high PARP1 expression and clinical outcomes in diverse types of cancers. Materials & methods: The electronic databases for all articles about PARP1 expression and cancers were searched. Additionally, bioinformatics analysis was utilized to validate the results of the meta-analysis. Results: Fifty-two studies with a total of 7140 patients were included in the current meta-analysis. High PARP1 expression was found to be significantly associated with poor overall survival and recurrence in various cancers, which were further strengthened and complemented by the results of bioinformatic analysis. Furthermore, increased PAPR1 expression was also related to clinicopathological features. Conclusion: Our findings confirmed that PARP1 might be a promising biomarker for prognosis in human cancers.
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Affiliation(s)
- Yan-Hua Huang
- Research Center of Clinical Pharmacology, Yunnan Provincial Hospital of Traditional Chinese Medicine, 120 Guanghua Rd, Kunming, 650032, China.,Department of Pharmacy, 920th Hospital of Joint Logistics Support Force, 212 Daguan Rd, Kunming, 650032, China
| | - Sun-Jun Yin
- Department of Pharmacy, 920th Hospital of Joint Logistics Support Force, 212 Daguan Rd, Kunming, 650032, China
| | - Yuan-Yuan Gong
- Department of Pharmacy, 920th Hospital of Joint Logistics Support Force, 212 Daguan Rd, Kunming, 650032, China
| | - Zhi-Ran Li
- Department of Pharmacy, 920th Hospital of Joint Logistics Support Force, 212 Daguan Rd, Kunming, 650032, China
| | - Qin Yang
- Department of Pharmacy, 920th Hospital of Joint Logistics Support Force, 212 Daguan Rd, Kunming, 650032, China
| | - Yu-Xin Fan
- Department of Pharmacy, 920th Hospital of Joint Logistics Support Force, 212 Daguan Rd, Kunming, 650032, China
| | - Tao Zhou
- Department of Pharmacy, 920th Hospital of Joint Logistics Support Force, 212 Daguan Rd, Kunming, 650032, China
| | - Rui Meng
- Department of Pharmacy, 920th Hospital of Joint Logistics Support Force, 212 Daguan Rd, Kunming, 650032, China
| | - Ping Wang
- Department of Pharmacy, 920th Hospital of Joint Logistics Support Force, 212 Daguan Rd, Kunming, 650032, China
| | - Gong-Hao He
- Research Center of Clinical Pharmacology, Yunnan Provincial Hospital of Traditional Chinese Medicine, 120 Guanghua Rd, Kunming, 650032, China.,Department of Pharmacy, 920th Hospital of Joint Logistics Support Force, 212 Daguan Rd, Kunming, 650032, China
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BRCA1 Expression by Immunohistochemistry and Prognosis in Ovarian Cancer: A Systematic Review and Meta-Analysis. Target Oncol 2021; 15:37-46. [PMID: 31960278 DOI: 10.1007/s11523-020-00697-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
BACKGROUND Homologous recombination deficiencies are associated with increased platinum sensitivity and potential response to poly (ADP-ribose) polymerase inhibitors in epithelial ovarian cancer. As an alternative to germline testing or somatic tumor sequencing, BRCA1 deficiency can be detected by immunohistochemistry and might predict homologous recombination deficiencies. OBJECTIVE This study aimed to assess the association between BRCA1 expression by immunohistochemistry and the prognosis of patients with epithelial ovarian cancer. METHODS We conducted a systematic review and meta-analysis following the Preferred Reporting Items for Systematic reviews and Meta-Analyses statement. We searched PubMed, EMBASE, Web of Science, and Scopus databases through July 2019. Reference lists of selected articles were screened for further studies. We conducted qualitative synthesis and meta-analyses of hazard ratios for overall survival and progression-free survival. RESULTS Of 41 studies of BRCA1 expression using immunohistochemistry, 18 evaluated the association of BRCA1 expression with patient survival (2738 cases). The loss of BRCA1 expression was associated with improved overall survival (hazard ratio = 0.67, 95% confidence interval 0.57-0.77) and progression-free survival (hazard ratio = 0.70, 95% confidence interval 0.58-0.84). CONCLUSIONS Negative BRCA1 expression assessed by immunohistochemistry was associated with a better prognosis in epithelial ovarian cancer.
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Molnár S, Vida B, Beke L, Méhes G, Póka R. The Prognostic Relevance of Poly (ADP-Ribose) Polymerase Expression in Ovarian Cancer Tissue of Wild Type and BRCA-Mutation Carrier Patients. Diagnostics (Basel) 2021; 11:diagnostics11010144. [PMID: 33478135 PMCID: PMC7835745 DOI: 10.3390/diagnostics11010144] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Revised: 01/14/2021] [Accepted: 01/16/2021] [Indexed: 12/11/2022] Open
Abstract
(1) Background: The mechanism of platinum resistance in ovarian cancer is not fully clarified, but the properly functioning DNA repair mechanism can counteract the effect of conventional anticancer treatment. The objective of our study was to evaluate the expression of an important DNA repair enzyme, the Poly (ADP-Ribose) Polymerase (PARP) expression in epithelial ovarian cancer (EOC) tissues depending on BRCA status and to assess its relationship with platinum resistance. (2) Methods: Immunostaining to highlight PARP protein expression was performed using a rabbit polyclonal anti-PARP antibody. The intensity and distribution of immunostaining were assessed by light. Somatic BRCA1 or BRCA2 mutation carriers were identified with bidirectional sequencing of DNA from archived tumor tissue, if the test could not be performed due to technical reasons from tumor cells, the sequencing was done from peripheral blood cells to identify germline mutation carriers. The median progression-free survival (PFS) was generated for each semiquantitative group of PARP expression among chemotherapy-naive cases at the time of PARP immunohistochemistry. (3) Results: In the overall population, negative PARP immunohistochemistry predicted significant PFS (20.1 vs. 11.9 months, p = 0.001) and OS (49 vs. 114 months, p = 0.014) benefit. Genotype-stratified subgroup analysis in BRCA-negative cases confirmed the role of PARP positivity indicating an unfavorable prognosis in the entire population (relapsed 73.91% vs. 92%; OR: 4.06; p = 0.04). In the cases of the subgroup carrying the BRCA mutation, the presence of PARP expression was not associated with less favorable relapse rates, but with marginal significance for overall survival predicted a lower chance of survival (OS more than 32 months 72.73% vs. 35%; OR: 0.2; p = 0.05). (4) Conclusion: The BRCA wild type patients with strong expression of PARP enzymes before the first set of chemotherapy have a poor prognosis.
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Affiliation(s)
- Szabolcs Molnár
- Institute of Obstetrics and Gynecology, University of Debrecen, Egyetem tér 1., 4032 Debrecen, Hungary; (B.V.); (R.P.)
- Correspondence: ; Tel.: +36-30-256-18-24
| | - Beáta Vida
- Institute of Obstetrics and Gynecology, University of Debrecen, Egyetem tér 1., 4032 Debrecen, Hungary; (B.V.); (R.P.)
| | - Lívia Beke
- Institute of Pathology, University of Debrecen, Egyetem tér 1., 4032 Debrecen, Hungary; (L.B.); (G.M.)
| | - Gábor Méhes
- Institute of Pathology, University of Debrecen, Egyetem tér 1., 4032 Debrecen, Hungary; (L.B.); (G.M.)
| | - Róbert Póka
- Institute of Obstetrics and Gynecology, University of Debrecen, Egyetem tér 1., 4032 Debrecen, Hungary; (B.V.); (R.P.)
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Molnár S, Beke L, Méhes G, Póka R. The Prognostic Value of PARP Expression in High-Grade Epithelial Ovarian Cancer. Pathol Oncol Res 2020; 26:2549-2555. [PMID: 32594311 PMCID: PMC7471102 DOI: 10.1007/s12253-020-00856-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Accepted: 06/15/2020] [Indexed: 12/11/2022]
Abstract
In an attempt to clarify the prognostic relevance of poly (ADP-ribose) polymerase (PARP) expression, we analysed the clinical data of 86 high-grade epithelial ovarian cancer (EOC) cases in which PARP immunohistochemistry results were available. Immunostaining to highlight PARP protein expression was performed using a Leica Bond MAX Immunostainer (Leica Microsystems, Wetzlar, Germany). We applied a rabbit polyclonal anti-PARP antibody (ab6079 330, Abcam, Cambridge, UK) for the specific reaction. The intensity and distribution of immunostaining were assessed by light microscopy (Leica DM2500 microscope, DFC 420 camera, and Leica Application Suite V3 software; Leica) and evaluated with a four-grade (0-3+) system. The median progression-free survival (PFS) was generated for each semiquantitative group of PARP expression among chemotherapy-naive cases at the time of PARP immunohistochemistry. Eighty-six cases were chemotherapy-naive at the time of PARP immunohistochemistry, and 41 cases showed no PARP expression. Forty-five cases showed intermediate or high PARP expression. The median PFS among patients in the PARP-negative group was 16 months (interquartile range; IQR 10.7-35.9 months), and the median PFS of patients in the PARP-positive group was 12 months (IQR 6.1-21.8 months). The difference was significant according to the log-rank test (p = 0.01). The median overall survival (OS) of patients in the PARP-negative group was 65 months (IQR 43.6-110.8 months), and the median OS of patients in the PARP-positive group was 52 months (IQR 36.9-66.7 months). The difference was significant according to the log-rank test (p = 0.028). Multiple comparisons confirmed that PARP expression results in a significant difference in PFS and OS achieved by first-line Taxol-carboplatin chemotherapy. The lack of PARP expression assessed by immunohistochemistry may predict improved PFS in ovarian cancer patients after adjuvant platinum-based chemotherapy.
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Affiliation(s)
- Szabolcs Molnár
- Institute of Obstetrics and Gynaecology, University of Debrecen, Nagyerdei krt. 98, Debrecen, 4032, Hungary.
| | - Lívia Beke
- Institute of Pathology, University of Debrecen, Nagyerdei krt. 98, Debrecen, 4032, Hungary
| | - Gábor Méhes
- Institute of Pathology, University of Debrecen, Nagyerdei krt. 98, Debrecen, 4032, Hungary
| | - Róbert Póka
- Institute of Obstetrics and Gynaecology, University of Debrecen, Nagyerdei krt. 98, Debrecen, 4032, Hungary
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Abstract
In this review, Slade provides an overview of the molecular mechanisms and cellular consequences of PARP and PARG inhibition. The author also highlights the clinical performance of four PARP inhibitors used in cancer therapy (olaparib, rucaparib, niraparib, and talazoparib) and discusses the predictive biomarkers of inhibitor sensitivity and mechanisms of resistance as well as the means of overcoming them through combination therapy. Oxidative and replication stress underlie genomic instability of cancer cells. Amplifying genomic instability through radiotherapy and chemotherapy has been a powerful but nonselective means of killing cancer cells. Precision medicine has revolutionized cancer therapy by putting forth the concept of selective targeting of cancer cells. Poly(ADP-ribose) polymerase (PARP) inhibitors represent a successful example of precision medicine as the first drugs targeting DNA damage response to have entered the clinic. PARP inhibitors act through synthetic lethality with mutations in DNA repair genes and were approved for the treatment of BRCA mutated ovarian and breast cancer. PARP inhibitors destabilize replication forks through PARP DNA entrapment and induce cell death through replication stress-induced mitotic catastrophe. Inhibitors of poly(ADP-ribose) glycohydrolase (PARG) exploit and exacerbate replication deficiencies of cancer cells and may complement PARP inhibitors in targeting a broad range of cancer types with different sources of genomic instability. Here I provide an overview of the molecular mechanisms and cellular consequences of PARP and PARG inhibition. I highlight clinical performance of four PARP inhibitors used in cancer therapy (olaparib, rucaparib, niraparib, and talazoparib) and discuss the predictive biomarkers of inhibitor sensitivity, mechanisms of resistance as well as the means of overcoming them through combination therapy.
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Affiliation(s)
- Dea Slade
- Department of Biochemistry, Max Perutz Labs, Vienna Biocenter (VBC), University of Vienna, 1030 Vienna, Austria
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11
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Pazzaglia S, Pioli C. Multifaceted Role of PARP-1 in DNA Repair and Inflammation: Pathological and Therapeutic Implications in Cancer and Non-Cancer Diseases. Cells 2019; 9:cells9010041. [PMID: 31877876 PMCID: PMC7017201 DOI: 10.3390/cells9010041] [Citation(s) in RCA: 110] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 12/18/2019] [Accepted: 12/20/2019] [Indexed: 12/12/2022] Open
Abstract
PARP-1 (poly(ADP-ribose)-polymerase 1), mainly known for its protective role in DNA repair, also regulates inflammatory processes. Notably, defects in DNA repair and chronic inflammation may both predispose to cancer development. On the other hand, inhibition of DNA repair and inflammatory responses can be beneficial in cancer therapy and PARP inhibitors are currently used for their lethal effects on tumor cells. Furthermore, excess of PARP-1 activity has been associated with many tumors and inflammation-related clinical conditions, including asthma, sepsis, arthritis, atherosclerosis, and neurodegenerative diseases, to name a few. Activation and inhibition of PARP represent, therefore, a double-edged sword that can be exploited for therapeutic purposes. In our review, we will discuss recent findings highlighting the composite multifaceted role of PARP-1 in cancer and inflammation-related diseases.
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Affiliation(s)
- Simonetta Pazzaglia
- Correspondence: (S.P.); (C.P.); Tel.: +39-06-3048-6535 (S.P.); +39-06-3048-3398 (C.P.)
| | - Claudio Pioli
- Correspondence: (S.P.); (C.P.); Tel.: +39-06-3048-6535 (S.P.); +39-06-3048-3398 (C.P.)
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12
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Teixeira LA, Candido Dos Reis FJ. Immunohistochemistry for the detection of BRCA1 and BRCA2 proteins in patients with ovarian cancer: a systematic review. J Clin Pathol 2019; 73:191-196. [PMID: 31719105 DOI: 10.1136/jclinpath-2019-206276] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Accepted: 10/28/2019] [Indexed: 01/07/2023]
Abstract
BACKGROUND Loss of function in either breast cancer type 1 susceptibility protein (BRCA1) or breast cancer type 2 susceptibility protein (BRCA2) is a major risk factor for epithelial ovarian cancer (EOC) development. BRCA1 or BRCA2 deficiencies are associated with short-term prognosis and might have importance for the treatment of women with the disease. However, the screening of all possible mechanisms of dysfunction is expensive, time-consuming and difficult to apply in clinical practice. On the other hand, immunohistochemistry (IHC) is a simple and reliable method to access the expression of several proteins in tumour tissues. MATERIALS AND METHODS This systematic review aims to evaluate the current usage of IHC to detect BRCA1 and BRCA2 deficiencies in EOC. We searched and evaluated all primary literature on the use of IHC for evaluating BRCA1 and BRCA2 proteins expression in EOC. The main concepts for the search were: ovarian neoplasms, IHC, BRCA1 and BRCA2. RESULTS Forty-four studies from 925 unique titles were included. A total of 4206 tumour samples were evaluated for BRCA1 and 1041 for BRCA2 expression. Twelve BRCA1 primary antibodies were used in 41 studies, and the most common was the MS110 clone (75.6%). Seven BRCA2 primary antibodies were used in ten studies. Using the cut-off of 10%, 47.0% of EOCs are associated with loss of BRCA1 and 34.5% with the loss of BRCA2 expression. CONCLUSION IHC was effective to detect loss of BRCA1 protein expression in EOC; however, data on BRCA2 expression were heterogeneous and difficult to interpret.
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Affiliation(s)
- Lorena Alves Teixeira
- Postgraduate Program in Gynecology and Obstetrics, Department of Gynecology and Obstetrics, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Sao Paulo, Brazil
| | - Francisco Jose Candido Dos Reis
- Postgraduate Program in Gynecology and Obstetrics, Department of Gynecology and Obstetrics, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Sao Paulo, Brazil
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13
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Ali R, Alabdullah M, Alblihy A, Miligy I, Mesquita KA, Chan SY, Moseley P, Rakha EA, Madhusudan S. PARP1 blockade is synthetically lethal in XRCC1 deficient sporadic epithelial ovarian cancers. Cancer Lett 2019; 469:124-133. [PMID: 31669203 DOI: 10.1016/j.canlet.2019.10.035] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Revised: 10/02/2019] [Accepted: 10/21/2019] [Indexed: 01/07/2023]
Abstract
PARP1 inhibitor (Niraparib, Olaparib, Rucaparib) maintenance therapy improves progression-free survival in platinum sensitive sporadic epithelial ovarian cancers. However, biomarkers of response to PARPi therapy is yet to be clearly defined. XRCC1, a scaffolding protein, interacts with PARP1 during BER and SSBR. In a large clinical cohort of 525 sporadic ovarian cancers, high XRCC1 or high PARP1 protein levels was not only associated with aggressive phenotypes but was also significantly linked with poor progression-free survival (p = 0.048 & p = 0.001 respectively) and poor ovarian cancer-specific survival (p = 0.020 & p = 0.008 respectively). Pre-clinically, Olaparib and Talazoparib therapy were selectively toxic in XRCC1 deficient or knock-out platinum sensitive ovarian cancer cells in 2D and 3D models. Increased sensitivity was associated with DNA double-strand break accumulation, cell cycle arrest and apoptotic cell accumulation. We conclude that XRCC1 deficiency predicts sensitivity to PARP inhibitor therapy. PARP1 targeting is a promising new approach in XRCC1 deficient ovarian cancers.
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Affiliation(s)
- Reem Ali
- Translational Oncology, Division of Cancer and Stem Cells, School of Medicine, University of Nottingham, Nottingham University Hospitals, Nottingham, NG5 1PB, UK
| | - Muslim Alabdullah
- Translational Oncology, Division of Cancer and Stem Cells, School of Medicine, University of Nottingham, Nottingham University Hospitals, Nottingham, NG5 1PB, UK; Department of Pathology, Division of Cancer and Stem Cells, School of Medicine, University of Nottingham, Nottingham, NG51PB, UK
| | - Adel Alblihy
- Translational Oncology, Division of Cancer and Stem Cells, School of Medicine, University of Nottingham, Nottingham University Hospitals, Nottingham, NG5 1PB, UK
| | - Islam Miligy
- Department of Pathology, Division of Cancer and Stem Cells, School of Medicine, University of Nottingham, Nottingham, NG51PB, UK
| | - Katia A Mesquita
- Translational Oncology, Division of Cancer and Stem Cells, School of Medicine, University of Nottingham, Nottingham University Hospitals, Nottingham, NG5 1PB, UK
| | - Stephen Yt Chan
- Department of Oncology, Nottingham University Hospitals, City Hospital Campus, Nottingham NG5 1PB, UK
| | - Paul Moseley
- Department of Oncology, Nottingham University Hospitals, City Hospital Campus, Nottingham NG5 1PB, UK
| | - Emad A Rakha
- Department of Pathology, Division of Cancer and Stem Cells, School of Medicine, University of Nottingham, Nottingham, NG51PB, UK
| | - Srinivasan Madhusudan
- Translational Oncology, Division of Cancer and Stem Cells, School of Medicine, University of Nottingham, Nottingham University Hospitals, Nottingham, NG5 1PB, UK; Department of Oncology, Nottingham University Hospitals, City Hospital Campus, Nottingham NG5 1PB, UK.
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14
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McCarthy AJ, Rouzbahman M, Thiryayi SA, Chapman WB, Clarke BA. Neoadjuvant therapy in gynaecological malignancies: What pathologists need to know. J Clin Pathol 2019; 72:102-111. [PMID: 30670562 DOI: 10.1136/jclinpath-2018-205634] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Accepted: 11/29/2018] [Indexed: 11/04/2022]
Abstract
In recent times, there has been a growing tendency to treat advanced gynaecological malignancies with neoadjuvant chemotherapy (NACT), with the goal of reducing tumour volume and enhancing operability resulting in optimal cytoreduction. This approach is used in particular for patients with advanced high-grade serous carcinoma of the ovary, fallopian tube or peritoneum. Pathology plays a crucial role in the management of these patients, both before and after NACT. Prior to initiation of NACT, a biopsy should be performed, usually of the omental cake, to confirm that a malignancy is present, to identify the site of origin of the tumour and to type and grade the tumour. Histopathologists must be aware of the resultant morphological effects of NACT when examining specimens following interval cytoreduction surgery. Tumour typing and grading, and even the identification of residual neoplasia, are particular challenges. Immunohistochemistry, when used judiciously, can be a useful adjunct in certain scenarios. A pathological assessment of the response to chemotherapy, and the pathological stage should be provided in the pathology report, as these may inform prognosis and subsequent management. We present a comprehensive overview of the relevant clinical and pathological aspects pertaining to NACT for gynaecological malignancies for the practicing surgical pathologist.
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Affiliation(s)
- Aoife J McCarthy
- Department of Anatomical Pathology, Laboratory Medicine Program, University Health Network, Toronto, Ontario, Canada .,Department of Laboratory Medicine and Pathobiology, Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - Marjan Rouzbahman
- Department of Anatomical Pathology, Laboratory Medicine Program, University Health Network, Toronto, Ontario, Canada.,Department of Laboratory Medicine and Pathobiology, Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - Sakinah A Thiryayi
- Department of Anatomical Pathology, Laboratory Medicine Program, University Health Network, Toronto, Ontario, Canada.,Department of Laboratory Medicine and Pathobiology, Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - William B Chapman
- Department of Anatomical Pathology, Laboratory Medicine Program, University Health Network, Toronto, Ontario, Canada.,Department of Laboratory Medicine and Pathobiology, Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - Blaise A Clarke
- Department of Anatomical Pathology, Laboratory Medicine Program, University Health Network, Toronto, Ontario, Canada.,Department of Laboratory Medicine and Pathobiology, Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
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15
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Schiewer MJ, Mandigo AC, Gordon N, Huang F, Gaur S, de Leeuw R, Zhao SG, Evans J, Han S, Parsons T, Birbe R, McCue P, McNair C, Chand SN, Cendon-Florez Y, Gallagher P, McCann JJ, Poudel Neupane N, Shafi AA, Dylgjeri E, Brand LJ, Visakorpi T, Raj GV, Lallas CD, Trabulsi EJ, Gomella LG, Dicker AP, Kelly WK, Leiby BE, Knudsen B, Feng FY, Knudsen KE. PARP-1 regulates DNA repair factor availability. EMBO Mol Med 2018; 10:e8816. [PMID: 30467127 PMCID: PMC6284389 DOI: 10.15252/emmm.201708816] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Revised: 10/10/2018] [Accepted: 10/25/2018] [Indexed: 12/22/2022] Open
Abstract
PARP-1 holds major functions on chromatin, DNA damage repair and transcriptional regulation, both of which are relevant in the context of cancer. Here, unbiased transcriptional profiling revealed the downstream transcriptional profile of PARP-1 enzymatic activity. Further investigation of the PARP-1-regulated transcriptome and secondary strategies for assessing PARP-1 activity in patient tissues revealed that PARP-1 activity was unexpectedly enriched as a function of disease progression and was associated with poor outcome independent of DNA double-strand breaks, suggesting that enhanced PARP-1 activity may promote aggressive phenotypes. Mechanistic investigation revealed that active PARP-1 served to enhance E2F1 transcription factor activity, and specifically promoted E2F1-mediated induction of DNA repair factors involved in homologous recombination (HR). Conversely, PARP-1 inhibition reduced HR factor availability and thus acted to induce or enhance "BRCA-ness". These observations bring new understanding of PARP-1 function in cancer and have significant ramifications on predicting PARP-1 inhibitor function in the clinical setting.
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Affiliation(s)
- Matthew J Schiewer
- Department of Cancer Biology, Thomas Jefferson University, Philadelphia, PA, USA
- Sidney Kimmel Cancer Center Thomas Jefferson University, Philadelphia, PA, USA
| | - Amy C Mandigo
- Department of Cancer Biology, Thomas Jefferson University, Philadelphia, PA, USA
- Sidney Kimmel Cancer Center Thomas Jefferson University, Philadelphia, PA, USA
| | - Nicolas Gordon
- Department of Cancer Biology, Thomas Jefferson University, Philadelphia, PA, USA
- Sidney Kimmel Cancer Center Thomas Jefferson University, Philadelphia, PA, USA
| | | | | | - Renée de Leeuw
- Department of Cancer Biology, Thomas Jefferson University, Philadelphia, PA, USA
- Sidney Kimmel Cancer Center Thomas Jefferson University, Philadelphia, PA, USA
| | - Shuang G Zhao
- Department of Radiation Oncology, University of Michigan, Ann Arbor, MI, USA
| | - Joseph Evans
- Department of Radiation Oncology, University of Michigan, Ann Arbor, MI, USA
| | - Sumin Han
- Department of Radiation Oncology, University of Michigan, Ann Arbor, MI, USA
| | - Theodore Parsons
- Sidney Kimmel Cancer Center Thomas Jefferson University, Philadelphia, PA, USA
- Department of Pathology, Thomas Jefferson University, Philadelphia, PA, USA
| | - Ruth Birbe
- Cooper University Health, Camden, NJ, USA
| | - Peter McCue
- Sidney Kimmel Cancer Center Thomas Jefferson University, Philadelphia, PA, USA
- Department of Pathology, Thomas Jefferson University, Philadelphia, PA, USA
| | - Christopher McNair
- Department of Cancer Biology, Thomas Jefferson University, Philadelphia, PA, USA
- Sidney Kimmel Cancer Center Thomas Jefferson University, Philadelphia, PA, USA
| | - Saswati N Chand
- Department of Cancer Biology, Thomas Jefferson University, Philadelphia, PA, USA
- Sidney Kimmel Cancer Center Thomas Jefferson University, Philadelphia, PA, USA
| | - Ylenia Cendon-Florez
- Department of Cancer Biology, Thomas Jefferson University, Philadelphia, PA, USA
- Sidney Kimmel Cancer Center Thomas Jefferson University, Philadelphia, PA, USA
| | - Peter Gallagher
- Department of Cancer Biology, Thomas Jefferson University, Philadelphia, PA, USA
- Sidney Kimmel Cancer Center Thomas Jefferson University, Philadelphia, PA, USA
| | - Jennifer J McCann
- Department of Cancer Biology, Thomas Jefferson University, Philadelphia, PA, USA
- Sidney Kimmel Cancer Center Thomas Jefferson University, Philadelphia, PA, USA
| | - Neermala Poudel Neupane
- Department of Cancer Biology, Thomas Jefferson University, Philadelphia, PA, USA
- Sidney Kimmel Cancer Center Thomas Jefferson University, Philadelphia, PA, USA
| | - Ayesha A Shafi
- Department of Cancer Biology, Thomas Jefferson University, Philadelphia, PA, USA
- Sidney Kimmel Cancer Center Thomas Jefferson University, Philadelphia, PA, USA
| | - Emanuela Dylgjeri
- Department of Cancer Biology, Thomas Jefferson University, Philadelphia, PA, USA
- Sidney Kimmel Cancer Center Thomas Jefferson University, Philadelphia, PA, USA
| | - Lucas J Brand
- Department of Cancer Biology, Thomas Jefferson University, Philadelphia, PA, USA
- Sidney Kimmel Cancer Center Thomas Jefferson University, Philadelphia, PA, USA
| | | | | | - Costas D Lallas
- Sidney Kimmel Cancer Center Thomas Jefferson University, Philadelphia, PA, USA
- Department of Urology, Thomas Jefferson University, Philadelphia, PA, USA
| | - Edouard J Trabulsi
- Sidney Kimmel Cancer Center Thomas Jefferson University, Philadelphia, PA, USA
- Department of Urology, Thomas Jefferson University, Philadelphia, PA, USA
| | - Leonard G Gomella
- Sidney Kimmel Cancer Center Thomas Jefferson University, Philadelphia, PA, USA
- Department of Urology, Thomas Jefferson University, Philadelphia, PA, USA
| | - Adam P Dicker
- Sidney Kimmel Cancer Center Thomas Jefferson University, Philadelphia, PA, USA
- Department of Radiation Oncology, Thomas Jefferson University, Philadelphia, PA, USA
| | - Wm Kevin Kelly
- Sidney Kimmel Cancer Center Thomas Jefferson University, Philadelphia, PA, USA
- Department of Medical Oncology, Thomas Jefferson University, Philadelphia, PA, USA
| | - Benjamin E Leiby
- Sidney Kimmel Cancer Center Thomas Jefferson University, Philadelphia, PA, USA
- Department of Pharmacology and Experimental Therapeutics, Thomas Jefferson University, Philadelphia, PA, USA
| | | | - Felix Y Feng
- Departments of Radiation Oncology, Urology, and Medicine, University of California, San Francisco, San Francisco, CA, USA
| | - Karen E Knudsen
- Department of Cancer Biology, Thomas Jefferson University, Philadelphia, PA, USA
- Sidney Kimmel Cancer Center Thomas Jefferson University, Philadelphia, PA, USA
- Department of Urology, Thomas Jefferson University, Philadelphia, PA, USA
- Department of Radiation Oncology, Thomas Jefferson University, Philadelphia, PA, USA
- Department of Medical Oncology, Thomas Jefferson University, Philadelphia, PA, USA
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16
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The PARP inhibitor olaparib potentiates the effect of the DNA damaging agent doxorubicin in osteosarcoma. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2018; 37:107. [PMID: 29784019 PMCID: PMC5963190 DOI: 10.1186/s13046-018-0772-9] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Accepted: 04/25/2018] [Indexed: 12/13/2022]
Abstract
Background PARP1 facilitates the recovery of DNA-damaged cells by recruiting DNA damage response molecules such as γH2AX and BRCA1/2, and plays a role in resistance to antitumor therapies. Therefore, PARP inhibition being evaluated as an anti-cancer therapy. However, there are limited studies regrading PARP inhibition in osteosarcoma. Methods We evaluated the expression of DNA damage response molecules in 35 human osteosarcomas and investigated the effects of co-treatment of the PARP inhibitor, olaparib, and doxorubicin in osteosarcoma cells. Results The expression patterns of PARP1, γH2AX, BRCA1, and BRCA2 were significantly associated with shorter survival of osteosarcoma patients. In osteosarcoma cells, knock-down of PARP1 and treatment of olaparib significantly inhibited proliferation of cells and induced apoptosis. Moreover, the anti-tumor effect was more significant with co-treatment of olaparib and doxorubicin in vitro and in vivo. Conclusions This study suggests that combined use of a PARP inhibitor with doxorubicin, a DNA damaging agent, might be effective in the treatment of osteosarcoma patients, especially in the poor-prognostic subgroups of osteosarcoma expressing PARP1, γH2AX, or BRCA1/2.
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17
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Makvandi M, Pantel A, Schwartz L, Schubert E, Xu K, Hsieh CJ, Hou C, Kim H, Weng CC, Winters H, Doot R, Farwell MD, Pryma DA, Greenberg RA, Mankoff DA, Simpkins F, Mach RH, Lin LL. A PET imaging agent for evaluating PARP-1 expression in ovarian cancer. J Clin Invest 2018; 128:2116-2126. [PMID: 29509546 PMCID: PMC5919879 DOI: 10.1172/jci97992] [Citation(s) in RCA: 91] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Accepted: 02/28/2018] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Poly(ADP-ribose) polymerase (PARP) inhibitors are effective in a broad population of patients with ovarian cancer; however, resistance caused by low enzyme expression of the drug target PARP-1 remains to be clinically evaluated in this context. We hypothesize that PARP-1 expression is variable in ovarian cancer and can be quantified in primary and metastatic disease using a novel PET imaging agent. METHODS We used a translational approach to describe the significance of PET imaging of PARP-1 in ovarian cancer. First, we produced PARP1-KO ovarian cancer cell lines using CRISPR/Cas9 gene editing to test the loss of PARP-1 as a resistance mechanism to all clinically used PARP inhibitors. Next, we performed preclinical microPET imaging studies using ovarian cancer patient-derived xenografts in mouse models. Finally, in a phase I PET imaging clinical trial we explored PET imaging as a regional marker of PARP-1 expression in primary and metastatic disease through correlative tissue histology. RESULTS We found that deletion of PARP1 causes resistance to all PARP inhibitors in vitro, and microPET imaging provides proof of concept as an approach to quantify PARP-1 in vivo. Clinically, we observed a spectrum of standard uptake values (SUVs) ranging from 2-12 for PARP-1 in tumors. In addition, we found a positive correlation between PET SUVs and fluorescent immunohistochemistry for PARP-1 (r2 = 0.60). CONCLUSION This work confirms the translational potential of a PARP-1 PET imaging agent and supports future clinical trials to test PARP-1 expression as a method to stratify patients for PARP inhibitor therapy. TRIAL REGISTRATION Clinicaltrials.gov NCT02637934. FUNDING Research reported in this publication was supported by the Department of Defense OC160269, a Basser Center team science grant, NIH National Cancer Institute R01CA174904, a Department of Energy training grant DE-SC0012476, Abramson Cancer Center Radiation Oncology pilot grants, the Marsha Rivkin Foundation, Kaleidoscope of Hope Foundation, and Paul Calabresi K12 Career Development Award 5K12CA076931.
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Affiliation(s)
- Mehran Makvandi
- Department of Radiology, Division of Nuclear Medicine and Molecular Imaging, University of Pennsylvania, Perelman School of Medicine, Philadelphia, Pennsylvania, USA
| | - Austin Pantel
- Department of Radiology, Division of Nuclear Medicine and Molecular Imaging, University of Pennsylvania, Perelman School of Medicine, Philadelphia, Pennsylvania, USA
| | - Lauren Schwartz
- Department of Pathology, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Erin Schubert
- Department of Radiology, Division of Nuclear Medicine and Molecular Imaging, University of Pennsylvania, Perelman School of Medicine, Philadelphia, Pennsylvania, USA
| | - Kuiying Xu
- Department of Radiology, Division of Nuclear Medicine and Molecular Imaging, University of Pennsylvania, Perelman School of Medicine, Philadelphia, Pennsylvania, USA
| | - Chia-Ju Hsieh
- Department of Radiology, Division of Nuclear Medicine and Molecular Imaging, University of Pennsylvania, Perelman School of Medicine, Philadelphia, Pennsylvania, USA
| | - Catherine Hou
- Department of Radiology, Division of Nuclear Medicine and Molecular Imaging, University of Pennsylvania, Perelman School of Medicine, Philadelphia, Pennsylvania, USA
| | - Hyoung Kim
- Department of OBGYN, Division of Gynecology and Oncology
| | - Chi-Chang Weng
- Department of Radiology, Division of Nuclear Medicine and Molecular Imaging, University of Pennsylvania, Perelman School of Medicine, Philadelphia, Pennsylvania, USA
| | | | - Robert Doot
- Department of Radiology, Division of Nuclear Medicine and Molecular Imaging, University of Pennsylvania, Perelman School of Medicine, Philadelphia, Pennsylvania, USA
| | - Michael D. Farwell
- Department of Radiology, Division of Nuclear Medicine and Molecular Imaging, University of Pennsylvania, Perelman School of Medicine, Philadelphia, Pennsylvania, USA
| | - Daniel A. Pryma
- Department of Radiology, Division of Nuclear Medicine and Molecular Imaging, University of Pennsylvania, Perelman School of Medicine, Philadelphia, Pennsylvania, USA
| | | | - David A. Mankoff
- Department of Radiology, Division of Nuclear Medicine and Molecular Imaging, University of Pennsylvania, Perelman School of Medicine, Philadelphia, Pennsylvania, USA
| | - Fiona Simpkins
- Department of OBGYN, Division of Gynecology and Oncology
| | - Robert H. Mach
- Department of Radiology, Division of Nuclear Medicine and Molecular Imaging, University of Pennsylvania, Perelman School of Medicine, Philadelphia, Pennsylvania, USA
| | - Lilie L. Lin
- Department of Radiation Oncology, University of Pennsylvania, Perelman School of Medicine, Philadelphia, Pennsylvania, USA
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18
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Hou D, Liu Z, Xu X, Liu Q, Zhang X, Kong B, Wei JJ, Gong Y, Shao C. Increased oxidative stress mediates the antitumor effect of PARP inhibition in ovarian cancer. Redox Biol 2018; 17:99-111. [PMID: 29684820 PMCID: PMC6006521 DOI: 10.1016/j.redox.2018.03.016] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Revised: 03/23/2018] [Accepted: 03/26/2018] [Indexed: 01/09/2023] Open
Abstract
PARP inhibitors have been widely tested in clinical trials, especially for the treatment of breast cancer and ovarian cancer, and were shown to be highly successful. Because PARP primarily functions in sensing and repairing DNA strand breaks, the therapeutic effect of PARP inhibition is generally believed to be attributed to impaired DNA repair. We here report that oxidative stress is also increased by PARP inhibition and mediates the antitumor effect. We showed that PARP1 is highly expressed in specimens of high grade serous ovarian carcinoma and its activity is required for unperturbed proliferation of ovarian cancer cells. Inhibition or depletion of PARP leads to not only an increase in DNA damage, but also an elevation in the levels of reactive oxygen species (ROS). Importantly, antioxidant N-acetylcysteine (NAC) significantly attenuated the induction of DNA damage and the perturbation of proliferation by PARP inhibition or depletion. We further showed that NADPH oxidases 1 and 4 were significantly upregulated by PARP inhibition and were partially responsible for the induction of oxidative stress. Depletion of NOX1 and NOX4 partially rescued the growth inhibition of PARP1-deficient tumor xenografts. Our findings suggest that in addition to compromising the repair of DNA damage, PARP inhibition or depletion may exert extra antitumor effect by elevating oxidative stress in ovarian cancer cells. PARP1 is overexpressed in ovarian cancer. PARP inhibition increases oxidative stress and oxidative DNA damage. PARP inhibition increases ROS by upregulating NOX1 and NOX4. Oxidative stress mediates the antitumor effect of PARP inhibition.
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Affiliation(s)
- Dong Hou
- Key Laboratory of Experimental Teratology, Ministry of Education/Department of Molecular Medicine and Genetics, Shandong University School of Medicine, Jinan, Shandong 250012, China
| | - Zhaojian Liu
- Department of Cell Biology, Shandong University School of Medicine, Jinan, Shandong 250012, China
| | - Xiuhua Xu
- Key Laboratory of Experimental Teratology, Ministry of Education/Department of Molecular Medicine and Genetics, Shandong University School of Medicine, Jinan, Shandong 250012, China
| | - Qiao Liu
- Key Laboratory of Experimental Teratology, Ministry of Education/Department of Molecular Medicine and Genetics, Shandong University School of Medicine, Jinan, Shandong 250012, China
| | - Xiyu Zhang
- Key Laboratory of Experimental Teratology, Ministry of Education/Department of Molecular Medicine and Genetics, Shandong University School of Medicine, Jinan, Shandong 250012, China
| | - Beihua Kong
- Department of Obstetrics and Gynecology, Qilu Hospital of Shandong University, Jinan, Shandong 250012, China
| | - Jian-Jun Wei
- Department of Pathology, Northwestern University School of Medicine, Chicago, IL, USA
| | - Yaoqin Gong
- Key Laboratory of Experimental Teratology, Ministry of Education/Department of Molecular Medicine and Genetics, Shandong University School of Medicine, Jinan, Shandong 250012, China
| | - Changshun Shao
- Key Laboratory of Experimental Teratology, Ministry of Education/Department of Molecular Medicine and Genetics, Shandong University School of Medicine, Jinan, Shandong 250012, China; The First Affiliated Hospital of Soochow University and State Key Laboratory of Radiation Medicine and Protection, Institutes for Translational Medicine, Soochow University, 199 Ren Ai Road, Suzhou, Jiangsu 215123, China.
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19
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Sander Effron S, Makvandi M, Lin L, Xu K, Li S, Lee H, Hou C, Pryma DA, Koch C, Mach RH. PARP-1 Expression Quantified by [ 18F]FluorThanatrace: A Biomarker of Response to PARP Inhibition Adjuvant to Radiation Therapy. Cancer Biother Radiopharm 2017; 32:9-15. [PMID: 28118040 DOI: 10.1089/cbr.2016.2133] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
INTRODUCTION Poly (ADP-ribose) polymerase 1 (PARP-1) is the major target of clinical PARP inhibitors and is a potential predictive biomarker for response to therapy. Due to the limited success of PARP inhibitors as monotherapy, investigators have shifted the clinical role of PARP inhibitors to the adjuvant setting. In this study, we evaluate the radiotracer [18F]FluorThanatrace ([18F]FTT) as a marker of PARP expression in vitro and the associated biological implications of PARP-1 expression in PARP inhibitor treatment adjuvant to radiation therapy. MATERIALS AND METHODS SNU-251 (BRCA1-mutant) and SKOV3 (BRCA1-WT) cell lines were evaluated in vitro by using the radiotracer [18F]FTT. Pharmacological binding assays were performed at baseline and were correlated with PARP-1 protein expression measured by Western blot protein analysis. Cell viability and clonogenic assays were used to characterize in vitro cytotoxicity for treatments, including: PARP inhibitors alone, radiation alone, and PARP inhibitor adjuvant to radiation. Western blot protein analysis was used to assess response to treatment by using γH2AX to measure DNA damage and PAR to measure the catalytic inhibition of PARP. RESULTS [18F]FTT was capable of measuring PARP-1 protein expression in vitro and corresponded to Western blot protein analysis at baseline. The addition of a PARP inhibitor enhanced radiation effects in both cell lines; however, a greater synergy was observed in the SNU-251 cell line that expresses a BRCA1 mutation and homologous recombination deficiency. Western blot protein analysis showed that the addition of a PARP inhibitor adjuvant to radiation increases DNA damage in both cell lines and reduces PARP enzymatic activity as measured by PAR. CONCLUSIONS In this work, we found that PARP-1 expression positively corresponds in vitro to the response of PARP inhibitors in combination with radiation therapy in ovarian cancer.
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Affiliation(s)
- Samuel Sander Effron
- 1 Division of Nuclear Medicine and Clinical Molecular Imaging, Department of Radiology, University of Pennsylvania Perelman School of Medicine , Philadelphia, Pennsylvania
| | - Mehran Makvandi
- 1 Division of Nuclear Medicine and Clinical Molecular Imaging, Department of Radiology, University of Pennsylvania Perelman School of Medicine , Philadelphia, Pennsylvania
| | - Lilie Lin
- 2 Department of Radiation Oncology, University of Pennsylvania Perelman School of Medicine , Philadelphia, Pennsylvania
| | - Kuiying Xu
- 1 Division of Nuclear Medicine and Clinical Molecular Imaging, Department of Radiology, University of Pennsylvania Perelman School of Medicine , Philadelphia, Pennsylvania
| | - Shihong Li
- 1 Division of Nuclear Medicine and Clinical Molecular Imaging, Department of Radiology, University of Pennsylvania Perelman School of Medicine , Philadelphia, Pennsylvania
| | - Hsiaoju Lee
- 1 Division of Nuclear Medicine and Clinical Molecular Imaging, Department of Radiology, University of Pennsylvania Perelman School of Medicine , Philadelphia, Pennsylvania
| | - Catherine Hou
- 1 Division of Nuclear Medicine and Clinical Molecular Imaging, Department of Radiology, University of Pennsylvania Perelman School of Medicine , Philadelphia, Pennsylvania
| | - Daniel A Pryma
- 1 Division of Nuclear Medicine and Clinical Molecular Imaging, Department of Radiology, University of Pennsylvania Perelman School of Medicine , Philadelphia, Pennsylvania
| | - Cameron Koch
- 2 Department of Radiation Oncology, University of Pennsylvania Perelman School of Medicine , Philadelphia, Pennsylvania
| | - Robert H Mach
- 1 Division of Nuclear Medicine and Clinical Molecular Imaging, Department of Radiology, University of Pennsylvania Perelman School of Medicine , Philadelphia, Pennsylvania
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Tumor suppressive effect of PARP1 and FOXO3A in gastric cancers and its clinical implications. Oncotarget 2016; 6:44819-31. [PMID: 26540566 PMCID: PMC4792594 DOI: 10.18632/oncotarget.6264] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2015] [Accepted: 10/22/2015] [Indexed: 12/30/2022] Open
Abstract
Poly (ADP-ribose) polymerase1 (PARP1) has been reported as a possible target for chemotherapy in many cancer types. However, its action mechanisms and clinical implications for gastric cancer survival are not yet fully understood. Here, we investigated the effect of PARP1 inhibition in the growth of gastric cancer cells. PARP1 inhibition by Olaparib or PARP1 siRNA could significantly attenuate growth and colony formation of gastric cancer cells, and which were mediated through induction of G2/M cell cycle arrest but not apoptosis. FOXO3A expression was induced by PARP1 inhibition, suggesting that FOXO3A might be one of downstream target of the PARP1 effect on gastric cancer cell growth. In addition, by performing tissue microarrays on the 166 cases of gastric cancer patients, we could observe that the expression status of PARP1 and FOXO3A were significantly associated with overall survival (OS) and relapse-free survival (RFS). Strikingly, combined expression status of PARP1 and FOXO3A showed better prediction for patient's clinical outcomes. The patient group with PARP1+/FOXO3A− expression had the worst prognosis while the patient group with PARP1−/FOXO3A+ had the most favorable prognosis (OS: P = 6.0 × 10−9, RFS: P = 2.2 × 10−8). In conclusion, we suggest that PARP1 and FOXO3A play critical roles in gastric cancer progression, and might have therapeutic and/or diagnostic potential in clinic.
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21
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Individual and Combined Expression of DNA Damage Response Molecules PARP1, γH2AX, BRCA1, and BRCA2 Predict Shorter Survival of Soft Tissue Sarcoma Patients. PLoS One 2016; 11:e0163193. [PMID: 27643881 PMCID: PMC5028069 DOI: 10.1371/journal.pone.0163193] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2016] [Accepted: 09/06/2016] [Indexed: 01/11/2023] Open
Abstract
DNA damage response (DDR) molecules are protective against genotoxic stresses. DDR molecules are also involved in the survival of cancer cells in patients undergoing anti-cancer therapies. Therefore, DDR molecules are potential markers of cancer progression in addition to being potential therapeutic targets. In this study, we evaluated the immunohistochemical expression of PARP1, γH2AX, BRCA1, and BRCA2 and their prognostic significance in 112 cases of soft tissue sarcoma (STS). The expression of PARP1, γH2AX, BRCA1, and BRCA2 were significantly associated with each other and were associated with higher tumor stage and presence of distant metastasis. The expression of PARP1, γH2AX, and BRCA2 were significantly associated with shorter disease-specific survival (DSS) and event-free survival (EFS) by univariate analysis. BRCA1 expression was associated with shorter DSS. Multivariate analysis revealed the expression of PARP1 and γH2AX to be independent indicators of poor prognosis of DSS and EFS. BRCA2 expression was an independent indicator of poor prognosis of DSS. In addition, the combined expressional patterns of PARP1, γH2AX, BRCA1, and BRCA2 (CSddrm) were independent prognostic predictors of DSS (P < 0.001) and EFS (P = 0.016). The ten-year DSS rate of the CSddrm-low, CSddrm-intermediate, and CSddrm-high subgroups were 81%, 26%, and 0%, respectively. In conclusion, this study demonstrates that the individual and combined expression patterns of the DDR molecules PARP1, γH2AX, BRCA1, and BRCA2 could be predictive of the prognosis of STS patients and suggests that controlling the activity of these DDR molecules could be employed in new therapeutic stratagems for the treatment of STS.
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Anderson RC, Makvandi M, Xu K, Lieberman BP, Zeng C, Pryma DA, Mach RH. Iodinated benzimidazole PARP radiotracer for evaluating PARP1/2 expression in vitro and in vivo. Nucl Med Biol 2016; 43:752-758. [PMID: 27689533 DOI: 10.1016/j.nucmedbio.2016.08.007] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2016] [Revised: 07/28/2016] [Accepted: 08/08/2016] [Indexed: 01/25/2023]
Abstract
BACKGROUND PARP inhibitors (PARPi) have the potential to impact cancer therapy in a selective patient population; however, despite current patient selection methods clinical trials have shown mixed response rates. It is therefore clinically useful to determine which patients will respond prior to receiving PARPi therapy. One essential biomarker is to measure the level of PARP enzyme expression in tumors. Small molecule radiotracers have been developed to accurately quantify PARP-1 expression in vitro and in vivo. [125I]KX-02-019 is the first report of a radioiodinated analogue of the benzimidazole class of PARPi. Herein, we studied the pharmacological properties of [125I]KX-02-019 as well as the in vivo biodistribution. METHODS [125I]KX-02-019 was evaluated in both cancer and non-cancer cell lines. We evaluated the pharmacologic properties of [125I]KX-02-019 in live cells by measuring enzyme association and dissociation kinetics, saturation, and specificity. In addition, competitive inhibition experiments were carried out with commercially available PARPi. Protein expression was analyzed by Western blot to compare PARP-1 and PARP-2 expression across cell lines studied. The biodistribution was studied in a mouse EMT6 tumor model at time points of 0.5, 1, 2, 4 and 6h. RESULTS [125I]KX-02-019 showed subtle differences in pharmacological properties in the absence of PARP-2. In addition, [125I]KX-02-019 was competitively displaced by clinical PARPi. In vivo biodistribution studies showed an increasing tumor to muscle ratio over 6h as well as fast clearance from healthy tissues. CONCLUSION [125I]KX-02-019 has binding sites in both PARP1 KO cells as well as PARP2 KO cells showing higher affinity for PARP-2. This observation is supported by a decrease in binding affinity in PARP2 KO cells compared to PARP1 KO cells. The pharmacologic and biological properties of [125I]KX-02-019 studied in vitro and in vivo showed that this analogue may be useful in determining pharmacokinetic and pharmacodynamic properties of clinical PARPi.
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Affiliation(s)
- Redmond-Craig Anderson
- University of Pennsylvania, Perelman School of Medicine, Department of Radiology and Division of Nuclear Medicine and Clinical Molecular Imaging, Philadelphia, PA, 19104, USA
| | - Mehran Makvandi
- University of Pennsylvania, Perelman School of Medicine, Department of Radiology and Division of Nuclear Medicine and Clinical Molecular Imaging, Philadelphia, PA, 19104, USA
| | - Kuiying Xu
- University of Pennsylvania, Perelman School of Medicine, Department of Radiology and Division of Nuclear Medicine and Clinical Molecular Imaging, Philadelphia, PA, 19104, USA
| | - Brian P Lieberman
- University of Pennsylvania, Perelman School of Medicine, Department of Radiology and Division of Nuclear Medicine and Clinical Molecular Imaging, Philadelphia, PA, 19104, USA
| | - Chenbo Zeng
- University of Pennsylvania, Perelman School of Medicine, Department of Radiology and Division of Nuclear Medicine and Clinical Molecular Imaging, Philadelphia, PA, 19104, USA
| | - Daniel A Pryma
- University of Pennsylvania, Perelman School of Medicine, Department of Radiology and Division of Nuclear Medicine and Clinical Molecular Imaging, Philadelphia, PA, 19104, USA
| | - Robert H Mach
- University of Pennsylvania, Perelman School of Medicine, Department of Radiology and Division of Nuclear Medicine and Clinical Molecular Imaging, Philadelphia, PA, 19104, USA.
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The prognostic and predictive significance of PARP-1 in locally advanced breast cancer of Egyptian patients receiving neoadjuvant chemotherapy. Appl Immunohistochem Mol Morphol 2016; 23:571-9. [PMID: 25611238 DOI: 10.1097/pai.0000000000000124] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
PURPOSE PARP-1 is a chromatin-associated enzyme that has a role in DNA repair and cell death. PARP-1 inhibitors are suggested therapy specifically for BRCA deficient breast carcinoma; however, their efficacy in sporadic breast cancer is under investigations. This study aimed to evaluate the PARP-1 in locally advanced breast cancer (LABC) cases to determine its predictive significance for outcome and response to neoadjuvant chemotherapy (NCT). MATERIALS AND METHODS This retrospective study was conducted on 84 LABC cases. Immunohistochemical expression of nuclear PARP-1 (nPARP-1) and cytoplasmic PARP-1 (cPARP-1) was evaluated in pretreatment needle core biopsies (NCBs). Results were correlated with clinicopathologic features, overall survival (OS), disease-free survival (DFS), and response to NCT in postoperative specimens. RESULTS High nPARP-1expression was observed in 64/84 (76%) of cases and was significantly associated with a lower lymph node stage (P=0.04). High cPARP-1 was observed in 40/84 (48%) of cases and it was significantly associated with lower lymph node stage (P=0.022) and lower tumor grade (P=0.050). High nPARP-1 expression was significantly associated with high cPARP-1 expression (P=0.005). Low cPARP-1 expression was associated with no response to chemotherapy in tumor site (P=0.021). According to the univariate survival analysis, high nPARP-1 and high cPARP-1 were significantly associated to longer OS (P=0.017 and P=0.019, respectively). High nPARP-1 but not cPARP-1 showed trend toward improved OS in multivariate Cox-regression analysis (P=0.053). CONCLUSION PARP-1 immunohistochemical expression is a marker of good prognosis and is predictive of response to NCT in LABC.
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Veskimäe K, Staff S, Grönholm A, Pesu M, Laaksonen M, Nykter M, Isola J, Mäenpää J. Assessment of PARP protein expression in epithelial ovarian cancer by ELISA pharmacodynamic assay and immunohistochemistry. Tumour Biol 2016; 37:11991-11999. [PMID: 27155850 DOI: 10.1007/s13277-016-5062-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2016] [Accepted: 05/01/2016] [Indexed: 01/02/2023] Open
Abstract
Targeting Poly (ADP-ribose) polymerase 1 (PARP-1) involved in base excision repair (BER) has been shown to be a clinically effective treatment strategy in epithelial ovarian cancer (EOC) defective in homologous recombination (HR). The aim of this study was to evaluate fresh EOC tumor tissue in regard to PAR (Poly (ADP-ribose)) concentration as a surrogate marker for PARP activity and PARP protein expression in archival samples by immunohistochemistry (IHC). The prospective study cohort consisted of 57 fresh tumor samples derived from patients undergoing primary (n = 38) or interval debulking surgery (n = 19) for EOC and parallel archival paraffin-embedded tumor samples. PARP activity in fresh frozen tumor tissue was assessed by an enzymatic chemiluminescence assay and PARP protein expression in paraffin-embedded tumor tissue by IHC. No correlation was detected between PARP enzyme activity and PARP staining by IHC (p = 0.82). High PARP activity was associated with platinum sensitivity both in the entire study cohort (p = 0.022) and in the high-grade subgroup (p = 0.017). High PARP activity was also associated with improved progression-free survival (PFS) (32 vs 14 months, log-rank p = 0.009). However, PARP immunostaining pattern was not predictive of patient survival. In conclusion, we present a novel finding of high PARP activity associated with platinum sensitivity and improved PFS in EOC. There was no association between PARP IHC and pharmacodynamic assay, and the correlation of PARP IHC with clinico-pathological characteristics and patient survival was poor. Pharmacodynamic assay rather than IHC seems to reflect better biologically significant PARP.
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Affiliation(s)
- K Veskimäe
- Department of Gynecology and Obstetrics, Tampere University Hospital, PO Box 2000, 33521, Tampere, Finland.
| | - S Staff
- Department of Gynecology and Obstetrics, Tampere University Hospital, PO Box 2000, 33521, Tampere, Finland.,Laboratory of Cancer Biology, Institute of Biomedical Technology, BioMediTech, University of Tampere, Tampere, Finland
| | - A Grönholm
- Immunoregulation, Institute of Biosciences and Medical Technology, BioMediTech, University of Tampere, Tampere, Finland
| | - M Pesu
- Immunoregulation, Institute of Biosciences and Medical Technology, BioMediTech, University of Tampere, Tampere, Finland.,Department of Dermatology, Tampere University Hospital, Tampere, Finland
| | - M Laaksonen
- Institute of Biosciences and Medical Technology, University of Tampere, Tampere, Finland
| | - M Nykter
- Institute of Biosciences and Medical Technology, University of Tampere, Tampere, Finland
| | - J Isola
- Laboratory of Cancer Biology, Institute of Biomedical Technology, BioMediTech, University of Tampere, Tampere, Finland
| | - J Mäenpää
- Department of Gynecology and Obstetrics, Tampere University Hospital, PO Box 2000, 33521, Tampere, Finland.,School of Medicine, University of Tampere, Tampere, Finland
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25
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Michels J, Adam J, Goubar A, Obrist F, Damotte D, Robin A, Alifano M, Vitale I, Olaussen KA, Girard P, Cremer I, Castedo M, Soria JC, Kroemer G. Negative prognostic value of high levels of intracellular poly(ADP-ribose) in non-small cell lung cancer. Ann Oncol 2015; 26:2470-7. [PMID: 26387143 DOI: 10.1093/annonc/mdv393] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2015] [Accepted: 09/13/2015] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND Cisplatin-resistant non-small cell lung cancer (NSCLC) cells are often characterized by alterations in vitamin B-related metabolic processes, including the overexpression and hyperactivation of poly(ADP-ribose) polymerase 1 (PARP1) and the downregulation of pyridoxal kinase (PDXK), correlating with elevated apoptosis resistance. Low PDXK expression is an established negative prognostic factor in NSCLC. PATIENTS AND METHODS We determined by immunohistochemistry the expression of PARP1 and the level of its product, poly(ADP-ribose) (PAR), in two independent cohorts of patients with resected NSCLC. RESULTS Intratumoral high levels (above median) of PAR (but not PARP1 protein levels) had a negative prognostic impact in both the training (92 stage I subjects) and validation (133 stage I and II subjects) cohorts, as determined by univariate and multivariate analyses. The simultaneous assessment of PAR and PDXK protein levels improved risk stratification. CONCLUSION NSCLC patients with high intratumoral PARP1 activity (i.e. elevated PAR levels above median) and low PDXK expression (below median) had a dismal prognosis, while patients with low PARP1 activity and high PDXK expression had a favorable outcome. Altogether, these results underscore the clinical potential and possible therapeutic relevance of these biomarkers.
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Affiliation(s)
- J Michels
- INSERM UMR1138 Group 11, Cordeliers Research Centre, Paris Department of Medical Oncology, Gustave Roussy Comprehensive Cancer Center, Villejuif Paris-Sud University, Villejuif
| | - J Adam
- Paris-Sud University, Villejuif Department of Pathology, Gustave Roussy Comprehensive Cancer Center, Villejuif INSERM U981, Villejuif
| | | | - F Obrist
- INSERM UMR1138 Group 11, Cordeliers Research Centre, Paris Pierre and Marie Curie University, Paris
| | - D Damotte
- INSERM UMR1138 Group 11, Cordeliers Research Centre, Paris Pierre and Marie Curie University, Paris Department of Pathology and Thoracic Surgery, Cochin Hospital, AP-HP, Paris Paris Descartes University, Paris, France
| | | | - M Alifano
- Department of Pathology and Thoracic Surgery, Cochin Hospital, AP-HP, Paris Paris Descartes University, Paris, France
| | - I Vitale
- Regina Elena National Cancer Institute, Rome Department of Biology, University of Rome 'TorVergata', Rome, Italy
| | - K A Olaussen
- Paris-Sud University, Villejuif INSERM U981, Villejuif
| | - P Girard
- Thoracic Department, Mutualiste Montsouris Institute, Paris
| | - I Cremer
- INSERM UMR1138 Group 11, Cordeliers Research Centre, Paris Pierre and Marie Curie University, Paris Paris Descartes University, Paris, France
| | - M Castedo
- INSERM UMR1138 Group 11, Cordeliers Research Centre, Paris Pierre and Marie Curie University, Paris
| | - J-C Soria
- Paris-Sud University, Villejuif INSERM U981, Villejuif Department of Drug Development, Gustave Roussy Comprehensive Cancer Center, Villejuif
| | - G Kroemer
- INSERM UMR1138 Group 11, Cordeliers Research Centre, Paris Pierre and Marie Curie University, Paris Paris Descartes University, Paris, France Metabolomics Platform, Gustave Roussy Comprehensive Cancer Center, Villejuif Department of Biology, Georges Pompidou European Hospital, AP-HP, Paris, France
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26
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Marques M, Beauchamp MC, Fleury H, Laskov I, Qiang S, Pelmus M, Provencher D, Mes-Masson AM, Gotlieb WH, Witcher M. Chemotherapy reduces PARP1 in cancers of the ovary: implications for future clinical trials involving PARP inhibitors. BMC Med 2015; 13:217. [PMID: 26354718 PMCID: PMC4565010 DOI: 10.1186/s12916-015-0454-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2015] [Accepted: 08/14/2015] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND PARP inhibitors have shown promising clinical results in cancer patients carrying BRCA1/2 mutations. Their clinical efficacy could logically be influenced by PARP1 protein levels in patient tumors. METHODS We screened three cohorts of patients with ovarian cancer, totaling 313 samples, and evaluated PARP1 protein expression by immunohistochemistry with further validation by western blotting. RESULTS We observed that up to 60 % of tumors showed little PARP1 protein expression. In serous ovarian tumors, comparing intratumoral PARP1 expression between chemo-naïve and post-chemotherapy patients revealed a decrease in intratumoral PARP1 following chemotherapy in all three cohorts (immunohistochemistry: p < 0.001, n = 239; western blot: p = 0.012, n = 74). The findings were further confirmed in a selection of matched samples from the same patients before and after chemotherapy. CONCLUSION Our data suggest that patients should be screened for PARP1 expression prior to therapy with PARP inhibitors. Further, the observed reduction of intratumoral PARP1 post-chemotherapy suggests that treating chemo-naïve patients with PARP inhibitors prior to the administration of chemotherapy, or concurrently, might increase the responsiveness to PARP1 inhibition. Thus, a change in the timing of PARP inhibitor administration may be warranted for future clinical trials.
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Affiliation(s)
- Maud Marques
- Lady Davis Institute for Medical Research, Jewish General Hospital, 3755 Côte Ste, Catherine Road, Montréal, QC, H3T 1E2, Canada.
| | - Marie-Claude Beauchamp
- Lady Davis Institute for Medical Research, Jewish General Hospital, 3755 Côte Ste, Catherine Road, Montréal, QC, H3T 1E2, Canada.
| | - Hubert Fleury
- Centre de recherche du Centre hospitalier de l'Université de Montréal/Institut du cancer de Montréal, Montréal, Canada.
| | - Ido Laskov
- Lady Davis Institute for Medical Research, Jewish General Hospital, 3755 Côte Ste, Catherine Road, Montréal, QC, H3T 1E2, Canada. .,Division of Gynecologic Oncology, Jewish General Hospital, McGill University, Montréal, Canada.
| | - Sun Qiang
- Lady Davis Institute for Medical Research, Jewish General Hospital, 3755 Côte Ste, Catherine Road, Montréal, QC, H3T 1E2, Canada.
| | - Manuela Pelmus
- Division of Pathology, Jewish General Hospital, Montréal, Canada.
| | - Diane Provencher
- Centre de recherche du Centre hospitalier de l'Université de Montréal/Institut du cancer de Montréal, Montréal, Canada. .,Department of Obstetric-Gynecology, Université de Montréal, Montreal, Canada. .,Department of Medicine, Université de Montréal, Montreal, Canada.
| | - Anne-Marie Mes-Masson
- Department of Obstetric-Gynecology, Université de Montréal, Montreal, Canada. .,Department of Medicine, Université de Montréal, Montreal, Canada.
| | - Walter H Gotlieb
- Lady Davis Institute for Medical Research, Jewish General Hospital, 3755 Côte Ste, Catherine Road, Montréal, QC, H3T 1E2, Canada. .,Division of Gynecologic Oncology, Jewish General Hospital, McGill University, Montréal, Canada.
| | - Michael Witcher
- Lady Davis Institute for Medical Research, Jewish General Hospital, 3755 Côte Ste, Catherine Road, Montréal, QC, H3T 1E2, Canada.
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Park SH, Noh SJ, Kim KM, Bae JS, Kwon KS, Jung SH, Kim JR, Lee H, Chung MJ, Moon WS, Kang MJ, Jang KY. Expression of DNA Damage Response Molecules PARP1, γH2AX, BRCA1, and BRCA2 Predicts Poor Survival of Breast Carcinoma Patients. Transl Oncol 2015; 8:239-49. [PMID: 26310369 PMCID: PMC4562981 DOI: 10.1016/j.tranon.2015.04.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2015] [Revised: 04/18/2015] [Accepted: 04/24/2015] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND: Poly(ADP-ribose) polymerase 1 (PARP1), γH2AX, BRCA1, and BRCA2 are conventional molecular indicators of DNA damage in cells and are often overexpressed in various cancers. In this study, we aimed, using immunohistochemical detection, whether the co-expression of PARP1, γH2AX, BRCA1, and BRCA2 in breast carcinoma (BCA) tissue can provide more reliable prediction of survival of BCA patients. MATERIALS AND METHODS: We investigated immunohistochemical expression and prognostic significance of the expression of PARP1, γH2AX, BRCA1, and BRCA2 in 192 cases of BCAs. RESULTS: The expression of these four molecules predicted earlier distant metastatic relapse, shorter overall survival (OS), and relapse-free survival (RFS) by univariate analysis. Multivariate analysis revealed the expression of PARP1, γH2AX, and BRCA2 as independent poor prognostic indicators of OS and RFS. In addition, the combined expressional pattern of BRCA1, BRCA2, PARP1, and γH2AX (CSbbph) was an additional independent prognostic predictor for OS (P < .001) and RFS (P < .001). The 10-year OS rate was 95% in the CSbbph-low (CSbbph scores 0 and 1) subgroup, but that was only 35% in the CSbbph-high (CSbbph score 4) subgroup. CONCLUSION: This study has demonstrated that the individual and combined expression patterns of PARP1, γH2AX, BRCA1, and BRCA2 could be helpful in determining an accurate prognosis for BCA patients and for the selection of BCA patients who could potentially benefit from anti-PARP1 therapy with a combination of genotoxic chemotherapeutic agents.
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Affiliation(s)
- See-Hyoung Park
- Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, Stanford University School of Medicine, Stanford, CA, USA
| | - Sang Jae Noh
- Department of Pathology, Chonbuk National University Medical School, Research Institute of Clinical Medicine of Chonbuk National University, Biomedical Research Institute of Chonbuk National University Hospital and Research Institute for Endocrine Sciences, Jeonju, Republic of Korea
| | - Kyoung Min Kim
- Department of Pathology, Chonbuk National University Medical School, Research Institute of Clinical Medicine of Chonbuk National University, Biomedical Research Institute of Chonbuk National University Hospital and Research Institute for Endocrine Sciences, Jeonju, Republic of Korea
| | - Jun Sang Bae
- Department of Pathology, Chonbuk National University Medical School, Research Institute of Clinical Medicine of Chonbuk National University, Biomedical Research Institute of Chonbuk National University Hospital and Research Institute for Endocrine Sciences, Jeonju, Republic of Korea
| | - Keun Sang Kwon
- Department of Preventive Medicine, Chonbuk National University Medical School, Research Institute of Clinical Medicine of Chonbuk National University, Biomedical Research Institute of Chonbuk National University Hospital and Research Institute for Endocrine Sciences, Jeonju, Republic of Korea
| | - Sung Hoo Jung
- Department of Surgery, Chonbuk National University Medical School, Research Institute of Clinical Medicine of Chonbuk National University, Biomedical Research Institute of Chonbuk National University Hospital and Research Institute for Endocrine Sciences, Jeonju, Republic of Korea
| | - Jung Ryul Kim
- Department of Orthopaedic Surgery, Chonbuk National University Medical School, Research Institute of Clinical Medicine of Chonbuk National University, Biomedical Research Institute of Chonbuk National University Hospital and Research Institute for Endocrine Sciences, Jeonju, Republic of Korea
| | - Ho Lee
- Department of Forensic Medicine, Chonbuk National University Medical School, Research Institute of Clinical Medicine of Chonbuk National University, Biomedical Research Institute of Chonbuk National University Hospital and Research Institute for Endocrine Sciences, Jeonju, Republic of Korea
| | - Myoung Ja Chung
- Department of Pathology, Chonbuk National University Medical School, Research Institute of Clinical Medicine of Chonbuk National University, Biomedical Research Institute of Chonbuk National University Hospital and Research Institute for Endocrine Sciences, Jeonju, Republic of Korea
| | - Woo Sung Moon
- Department of Pathology, Chonbuk National University Medical School, Research Institute of Clinical Medicine of Chonbuk National University, Biomedical Research Institute of Chonbuk National University Hospital and Research Institute for Endocrine Sciences, Jeonju, Republic of Korea
| | - Myoung Jae Kang
- Department of Pathology, Chonbuk National University Medical School, Research Institute of Clinical Medicine of Chonbuk National University, Biomedical Research Institute of Chonbuk National University Hospital and Research Institute for Endocrine Sciences, Jeonju, Republic of Korea
| | - Kyu Yun Jang
- Department of Pathology, Chonbuk National University Medical School, Research Institute of Clinical Medicine of Chonbuk National University, Biomedical Research Institute of Chonbuk National University Hospital and Research Institute for Endocrine Sciences, Jeonju, Republic of Korea.
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28
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Davidson B, Tropé CG. Ovarian cancer: diagnostic, biological and prognostic aspects. ACTA ACUST UNITED AC 2015; 10:519-33. [PMID: 25335543 DOI: 10.2217/whe.14.37] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Ovarian cancer remains the most lethal gynecologic malignancy, owing to late detection, intrinsic and acquired chemoresistance and remarkable heterogeneity. Despite optimization of surgical and chemotherapy protocols and initiation of clinical trials incorporating targeted therapy, only modest gains have been achieved in prolonging survival in this cancer. This review provides an update of recent developments in our understanding of the etiology, origin, diagnosis, progression and treatment of this malignancy, with emphasis on clinically relevant genetic classification approaches. In the authors' opinion, focused effort directed at understanding the molecular make-up of recurrent and metastatic ovarian cancer, while keeping in mind the unique molecular character of each of its histological types, is central to our effort to improve patient outcome in this cancer.
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Affiliation(s)
- Ben Davidson
- Department of Pathology, Oslo University Hospital, Norwegian Radium Hospital, N-0310 Oslo, Norway
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Sistigu A, Manic G, Obrist F, Vitale I. Trial watch - inhibiting PARP enzymes for anticancer therapy. Mol Cell Oncol 2015; 3:e1053594. [PMID: 27308587 DOI: 10.1080/23723556.2015.1053594] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Revised: 05/16/2015] [Accepted: 05/18/2015] [Indexed: 12/25/2022]
Abstract
Poly(ADP-ribose) polymerases (PARPs) are a members of family of enzymes that catalyze poly(ADP-ribosyl)ation (PARylation) and/or mono(ADP-ribosyl)ation (MARylation), two post-translational protein modifications involved in crucial cellular processes including (but not limited to) the DNA damage response (DDR). PARP1, the most abundant family member, is a nuclear protein that is activated upon sensing distinct types of DNA damage and contributes to their resolution by PARylating multiple DDR players. Recent evidence suggests that, along with DDR, activated PARP1 mediates a series of prosurvival and proapoptotic processes aimed at preserving genomic stability. Despite this potential oncosuppressive role, upregulation and/or overactivation of PARP1 or other PARP enzymes has been reported in a variety of human neoplasms. Over the last few decades, several pharmacologic inhibitors of PARP1 and PARP2 have been assessed in preclinical and clinical studies showing potent antineoplastic activity, particularly against homologous recombination (HR)-deficient ovarian and breast cancers. In this Trial Watch, we describe the impact of PARP enzymes and PARylation in cancer, discuss the mechanism of cancer cell killing by PARP1 inactivation, and summarize the results of recent clinical studies aimed at evaluating the safety and therapeutic profile of PARP inhibitors in cancer patients.
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Affiliation(s)
| | - Gwenola Manic
- Regina Elena National Cancer Institute , Rome, Italy
| | - Florine Obrist
- Université Paris-Sud/Paris XI, Le Kremlin-Bicêtre, France; INSERM, UMRS1138, Paris, France; Equipe 11 labelisée par la Ligue Nationale contre le Cancer, Center de Recherche des Cordeliers, Paris, France; Gustave Roussy Cancer Campus, Villejuif, France
| | - Ilio Vitale
- Regina Elena National Cancer Institute, Rome, Italy; Department of Biology, University of Rome "TorVergata", Rome, Italy
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Karpel-Massler G, Pareja F, Aimé P, Shu C, Chau L, Westhoff MA, Halatsch ME, Crary JF, Canoll P, Siegelin MD. PARP inhibition restores extrinsic apoptotic sensitivity in glioblastoma. PLoS One 2014; 9:e114583. [PMID: 25531448 PMCID: PMC4273972 DOI: 10.1371/journal.pone.0114583] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2014] [Accepted: 11/11/2014] [Indexed: 01/23/2023] Open
Abstract
Background Resistance to apoptosis is a paramount issue in the treatment of Glioblastoma (GBM). We show that targeting PARP by the small molecule inhibitors, Olaparib (AZD-2281) or PJ34, reduces proliferation and lowers the apoptotic threshold of GBM cells in vitro and in vivo. Methods The sensitizing effects of PARP inhibition on TRAIL-mediated apoptosis and potential toxicity were analyzed using viability assays and flow cytometry in established GBM cell lines, low-passage neurospheres and astrocytes in vitro. Molecular analyses included western blots and gene silencing. In vivo, effects on tumor growth were examined in a murine subcutaneous xenograft model. Results The combination treatment of PARP inhibitors and TRAIL led to an increased cell death with activation of caspases and inhibition of formation of neurospheres when compared to single-agent treatment. Mechanistically, pharmacological PARP inhibition elicited a nuclear stress response with up-regulation of down-stream DNA-stress response proteins, e.g., CCAAT enhancer binding protein (C/EBP) homology protein (CHOP). Furthermore, Olaparib and PJ34 increased protein levels of DR5 in a concentration and time-dependent manner. In turn, siRNA-mediated suppression of DR5 mitigated the effects of TRAIL/PARP inhibitor-mediated apoptosis. In addition, suppression of PARP-1 levels enhanced TRAIL-mediated apoptosis in malignant glioma cells. Treatment of human astrocytes with the combination of TRAIL/PARP inhibitors did not cause toxicity. Finally, the combination treatment of TRAIL and PJ34 significantly reduced tumor growth in vivo when compared to treatment with each agent alone. Conclusions PARP inhibition represents a promising avenue to overcome apoptotic resistance in GBM.
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Affiliation(s)
- Georg Karpel-Massler
- Department of Pathology & Cell Biology, Columbia University Medical Center, New York, New York, United States of America
| | - Fresia Pareja
- Department of Pathology & Cell Biology, Columbia University Medical Center, New York, New York, United States of America
| | - Pascaline Aimé
- Department of Pathology & Cell Biology, Columbia University Medical Center, New York, New York, United States of America
| | - Chang Shu
- Department of Pathology & Cell Biology, Columbia University Medical Center, New York, New York, United States of America
| | - Lily Chau
- Department of Pathology & Cell Biology, Columbia University Medical Center, New York, New York, United States of America
| | - Mike-Andrew Westhoff
- Department of Pediatrics and Adolescent Medicine, Ulm University Medical Center, Ulm, Germany
| | | | - John F Crary
- Department of Pathology & Cell Biology, Columbia University Medical Center, New York, New York, United States of America
| | - Peter Canoll
- Department of Pathology & Cell Biology, Columbia University Medical Center, New York, New York, United States of America
| | - Markus D Siegelin
- Department of Pathology & Cell Biology, Columbia University Medical Center, New York, New York, United States of America
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Green AR, Caracappa D, Benhasouna AA, Alshareeda A, Nolan CC, Macmillan RD, Madhusudan S, Ellis IO, Rakha EA. Biological and clinical significance of PARP1 protein expression in breast cancer. Breast Cancer Res Treat 2014; 149:353-62. [PMID: 25528020 PMCID: PMC4308637 DOI: 10.1007/s10549-014-3230-1] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2014] [Accepted: 12/02/2014] [Indexed: 01/05/2023]
Abstract
Poly(ADP-ribose) polymerase-1 (PARP1) is a key facilitator of DNA repair. PARP inhibitors have gained recent attention as promising therapeutic agents for the treatment of solid tumours including breast cancer (BC). However, the biological and clinical significance of PARP1 expression in BC and its role in DNA-damage response (DDR) remain to be defined. We investigated the expression of PARP1 expression, cleaved (PARP1c) and non-cleaved (PAR1nc) forms, in a large and well-characterised cohort of clinically annotated stage I-III operable BCs (n = 1,269) and 43 BRCA1-mutated BCs using immunohistochemistry. PARP1 expression was correlated to clinicopathological variables, outcome and expression of other key DNA repair proteins (BRCA1, RAD51, Ku70/80, PIASγ and CHK1). Expression of PARP1 was exclusively nuclear. 49 and 85 % of sporadic BC showed expression PARP1nc and PARP1c, respectively. In BRCA1-mutated tumours, PARP1nc/PARP1c was highly expressed (95 and 79 %, respectively). PARP1nc expression was positively associated with premenopausal younger age patients, larger size and higher tumour grade. PARP1 was positively associated with DDR-proteins; RAD51, BRCA1, CHK1 and PIASγ (p < 0.001). Negative association was found between PARP1nc and Ki67. PARP1c was associated with ER (p < 0.001). Different associations between PARP1 and DDR-proteins were observed when stratified based on ER/BRCA1 status. PARP1 was not an independent predictor of outcome in sporadic or BRCA1-mutated BC. Our results demonstrate a potential biological role for PARP1c and PARP1nc in DNA repair in BC based on the significant association with other key DNA damage repair proteins. These associations were not restricted to ER-negative or triple-negative subgroup.
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Affiliation(s)
- Andrew R Green
- Division of Cancer and Stem Cells, School of Medicine, Nottingham City Hospital, University of Nottingham, Hucknall Road, Nottingham, NG5 1PB, UK,
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Engineered microenvironments provide new insights into ovarian and prostate cancer progression and drug responses. Adv Drug Deliv Rev 2014; 79-80:193-213. [PMID: 24969478 DOI: 10.1016/j.addr.2014.06.001] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2013] [Revised: 05/30/2014] [Accepted: 06/16/2014] [Indexed: 02/06/2023]
Abstract
Tissue engineering technologies, which have originally been designed to reconstitute damaged tissue structure and function, can mimic not only tissue regeneration processes but also cancer development and progression. Bioengineered approaches allow cell biologists to develop sophisticated experimentally and physiologically relevant cancer models to recapitulate the complexity of the disease seen in patients. Tissue engineering tools enable three-dimensionality based on the design of biomaterials and scaffolds that re-create the geometry, chemistry, function and signalling milieu of the native tumour microenvironment. Three-dimensional (3D) microenvironments, including cell-derived matrices, biomaterial-based cell culture models and integrated co-cultures with engineered stromal components, are powerful tools to study dynamic processes like proteolytic functions associated with cancer progression, metastasis and resistance to therapeutics. In this review, we discuss how biomimetic strategies can reproduce a humanised niche for human cancer cells, such as peritoneal or bone-like microenvironments, addressing specific aspects of ovarian and prostate cancer progression and therapy response.
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The role of BRCA status on the prognosis of patients with epithelial ovarian cancer: a systematic review of the literature with a meta-analysis. PLoS One 2014; 9:e95285. [PMID: 24788697 PMCID: PMC4006804 DOI: 10.1371/journal.pone.0095285] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2013] [Accepted: 03/26/2014] [Indexed: 12/13/2022] Open
Abstract
Objective The role of BRCA dysfunction on the prognosis of patients with epithelial ovarian cancer (EOCs) remains controversial. This systematic review tried to assess the role of BRCA dysfunction, including BRCA1/2 germline, somatic mutations, low BRCA1 protein/mRNA expression or BRCA1 promoter methylation, as prognostic factor in EOCs. Methods Studies were selected for analysis if they provided an independent assessment of BRCA status and prognosis in EOC. To make it possible to aggregate survival results of the published studies, their methodology was assessed using a modified quality scale. Results Of 35 evaluable studies, 23 identified BRCA dysfucntion status as a favourable prognostic factor. No significant differences were detected in the global score of quality assessment. The aggregated hazard ratio (HR) of overall survival (OS) of 34 evaluable studies suggested that BRCA dysfunction status had a favourable impact on OS (HR = 0.69, 95% CI 0.61–0.79), and when these studies were categorised into BRCA1/2 mutation and low protein/mRNA expression of BRCA1 subgroups, all of them demonstrated positive results (HR = 0.67, 95% CI: 0.57–0.78; HR = 0.62, 95% CI: 0.51–0.75; and HR = 0.51, 95% CI: 0.33–0.78, respectively), except for the subgroup of BRCA1 promoter methylation (HR = 1.59, 95% CI: 0.72–3.50). The meta-analysis of progression-free survival (PFS), which included 18 evaluable studies, demonstrated that BRCA dysfunction status was associated with a longer PFS in EOC (HR = 0.69, 95% CI: 0.63–0.76). Conclusions Patients with BRCA dysfunction status tend to have a better outcome, but further prospective clinical studies comparing the different BRCA statuses in EOC is urgently needed to specifically define the most effective treatment for the separate patient groups.
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Matias-Guiu X, Davidson B. Prognostic biomarkers in endometrial and ovarian carcinoma. Virchows Arch 2014; 464:315-31. [PMID: 24504546 DOI: 10.1007/s00428-013-1509-y] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2013] [Revised: 11/05/2013] [Accepted: 11/07/2013] [Indexed: 02/06/2023]
Abstract
This article reviews the main prognostic and predictive biomarkers of endometrial (EC) and ovarian carcinoma (OC). In EC, prognosis still relies on conventional pathological features such as histological type and grade, as well as myometrial or lymphovascular space invasion. Estrogen receptor, p53, Ki-67, and ploidy analysis are the most promising biomarkers among a long list of molecules that have been proposed. Also, a number of putative predictive biomarkers have been proposed in molecular targeted therapy. In OC, prognosis is predominantly dependent on disease stage at diagnosis and the extent of residual disease at primary operation. Diagnostic markers which aid in establishing histological type in OC are available. However, not a single universally accepted predictive or prognostic marker exists to date. Targeted therapy has been growingly focused at in recent years, in view of the frequent development of chemoresistance at recurrent disease. The present review emphasizes the crucial role of correct pathological classification and stringent selection criteria of the material studied as basis for any evaluation of biological markers. It further emphasizes the promise of targeted therapy in EC and OC, while simultaneously highlighting the difficulties remaining before this can become standard of care.
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Affiliation(s)
- Xavier Matias-Guiu
- Department of Pathology and Molecular Genetics and Research Laboratory, Hospital Universitari Arnau de Vilanova, IRBLLEIDA, University of Lleida, Av. Alcalde Rovira Roure 80, 25198, Lleida, Spain,
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