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Luvero D, Angioli R, Celoro F, Plotti F, Terranova C, Guzzo F, Cundari GB, Liparulo F, Verdone C, Montera R. Tailored Treatment Strategies in First Line Therapy for Ovarian Cancer Patients: A Critical Review of the Literature. Pharmaceuticals (Basel) 2024; 17:778. [PMID: 38931448 PMCID: PMC11206378 DOI: 10.3390/ph17060778] [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: 05/05/2024] [Revised: 06/10/2024] [Accepted: 06/12/2024] [Indexed: 06/28/2024] Open
Abstract
BACKGROUND Ovarian cancer (OC) is a significant cause of cancer-related mortality in women globally, with a five-year survival rate of approximately 49%. Standard therapy involves cytoreductive surgery followed by chemotherapy. Its poor prognosis has driven interest in alternative therapies such as targeted molecular agents like bevacizumab and poly (ADP-ribose) polymerase inhibitors (PARPi). MATERIALS AND METHODS This review systematically searched PubMed from January 2018 to December 2023 for studies on PARPi in OC. Emphasis was on identifying relevant Phase III trials, extracting data on study design, patient demographics, and outcomes. Special focus was on assessing PARPi efficacy, safety, impact on quality of life, and ongoing trials, including those on Clinicaltrials.gov. RESULTS The efficacy of PARPi in first-line therapy for OC has been extensively studied. Trials like SOLO-1, PRIMA, and ATHENA-MONO have demonstrated significant improvements in progression-free survival (PFS) and overall survival (OS), particularly in patients with BRCA mutations. Additionally, the combination of PARPi with other agents like bevacizumab has shown promising results in extending PFS. However, PARPi treatment is associated with various adverse effects, including hematologic toxicities like anemia, thrombocytopenia, and neutropenia. While most adverse events are manageable, some patients may require dose adjustments or discontinuation of treatment. Importantly, PARPi maintenance therapy has not adversely affected health-related quality of life (HRQoL), with studies reporting similar HRQoL scores between PARPi-treated and placebo-treated patients. CONCLUSIONS PARPi offer effective treatment with manageable side effects, suitable even for medically fragile patients. Individualized dosing can optimize benefits while minimizing adverse events. Exploring diverse treatment approaches, particularly in patients with limited life expectancy or high disease burden, could improve outcomes. Ongoing research is investigating alternative therapies and combinations to broaden treatment options. Combining bevacizumab with PARPi may be justified for first-line and recurrent maintenance therapy. Regardless of mutational status, PARPi should be considered for maintenance therapy in newly diagnosed advanced OC. Platinum sensitivity remains crucial for treatment decisions and predicting survival outcomes.
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Affiliation(s)
- Daniela Luvero
- Department of Gynecology, Fondazione Policlinico Universitario Campus Bio Medico, Via Alvaro del Portillo 200, 00128 Roma, Italy; (D.L.); (R.A.); (F.P.); (C.T.); (F.G.); (R.M.)
| | - Roberto Angioli
- Department of Gynecology, Fondazione Policlinico Universitario Campus Bio Medico, Via Alvaro del Portillo 200, 00128 Roma, Italy; (D.L.); (R.A.); (F.P.); (C.T.); (F.G.); (R.M.)
- Research Unit of Gynecology, Department of Medicine and Surgery, Università Campus Bio Medico, Via Alvaro del Portillo 21, 00128 Roma, Italy; (G.B.C.); (F.L.); (C.V.)
| | - Federica Celoro
- Research Unit of Gynecology, Department of Medicine and Surgery, Università Campus Bio Medico, Via Alvaro del Portillo 21, 00128 Roma, Italy; (G.B.C.); (F.L.); (C.V.)
| | - Francesco Plotti
- Department of Gynecology, Fondazione Policlinico Universitario Campus Bio Medico, Via Alvaro del Portillo 200, 00128 Roma, Italy; (D.L.); (R.A.); (F.P.); (C.T.); (F.G.); (R.M.)
- Research Unit of Gynecology, Department of Medicine and Surgery, Università Campus Bio Medico, Via Alvaro del Portillo 21, 00128 Roma, Italy; (G.B.C.); (F.L.); (C.V.)
| | - Corrado Terranova
- Department of Gynecology, Fondazione Policlinico Universitario Campus Bio Medico, Via Alvaro del Portillo 200, 00128 Roma, Italy; (D.L.); (R.A.); (F.P.); (C.T.); (F.G.); (R.M.)
- Research Unit of Gynecology, Department of Medicine and Surgery, Università Campus Bio Medico, Via Alvaro del Portillo 21, 00128 Roma, Italy; (G.B.C.); (F.L.); (C.V.)
| | - Federica Guzzo
- Department of Gynecology, Fondazione Policlinico Universitario Campus Bio Medico, Via Alvaro del Portillo 200, 00128 Roma, Italy; (D.L.); (R.A.); (F.P.); (C.T.); (F.G.); (R.M.)
| | - Gianna Barbara Cundari
- Research Unit of Gynecology, Department of Medicine and Surgery, Università Campus Bio Medico, Via Alvaro del Portillo 21, 00128 Roma, Italy; (G.B.C.); (F.L.); (C.V.)
| | - Federico Liparulo
- Research Unit of Gynecology, Department of Medicine and Surgery, Università Campus Bio Medico, Via Alvaro del Portillo 21, 00128 Roma, Italy; (G.B.C.); (F.L.); (C.V.)
| | - Camilla Verdone
- Research Unit of Gynecology, Department of Medicine and Surgery, Università Campus Bio Medico, Via Alvaro del Portillo 21, 00128 Roma, Italy; (G.B.C.); (F.L.); (C.V.)
| | - Roberto Montera
- Department of Gynecology, Fondazione Policlinico Universitario Campus Bio Medico, Via Alvaro del Portillo 200, 00128 Roma, Italy; (D.L.); (R.A.); (F.P.); (C.T.); (F.G.); (R.M.)
- Research Unit of Gynecology, Department of Medicine and Surgery, Università Campus Bio Medico, Via Alvaro del Portillo 21, 00128 Roma, Italy; (G.B.C.); (F.L.); (C.V.)
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Szenajch J, Szabelska-Beręsewicz A, Świercz A, Zyprych-Walczak J, Siatkowski I, Góralski M, Synowiec A, Handschuh L. Transcriptome Remodeling in Gradual Development of Inverse Resistance between Paclitaxel and Cisplatin in Ovarian Cancer Cells. Int J Mol Sci 2020; 21:E9218. [PMID: 33287223 PMCID: PMC7730278 DOI: 10.3390/ijms21239218] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 11/29/2020] [Accepted: 11/30/2020] [Indexed: 12/13/2022] Open
Abstract
Resistance to anti-cancer drugs is the main challenge in oncology. In pre-clinical studies, established cancer cell lines are primary tools in deciphering molecular mechanisms of this phenomenon. In this study, we proposed a new, transcriptome-focused approach, utilizing a model of isogenic cancer cell lines with gradually changing resistance. We analyzed trends in gene expression in the aim to find out a scaffold of resistance development process. The ovarian cancer cell line A2780 was treated with stepwise increased concentrations of paclitaxel (PTX) to generate a series of drug resistant sublines. To monitor transcriptome changes we submitted them to mRNA-sequencing, followed by the identification of differentially expressed genes (DEGs), principal component analysis (PCA), and hierarchical clustering. Functional interactions of proteins, encoded by DEGs, were analyzed by building protein-protein interaction (PPI) networks. We obtained human ovarian cancer cell lines with gradually developed resistance to PTX and collateral sensitivity to cisplatin (CDDP) (inverse resistance). In their transcriptomes, we identified two groups of DEGs: (1) With fluctuations in expression in the course of resistance acquiring; and (2) with a consistently changed expression at each stage of resistance development, constituting a scaffold of the process. In the scaffold PPI network, the cell cycle regulator-polo-like kinase 2 (PLK2); proteins belonging to the tumor necrosis factor (TNF) ligand and receptor family, as well as to the ephrin receptor family were found, and moreover, proteins linked to osteo- and chondrogenesis and the nervous system development. Our cellular model of drug resistance allowed for keeping track of trends in gene expression and studying this phenomenon as a process of evolution, reflected by global transcriptome remodeling. This approach enabled us to explore novel candidate genes and surmise that abrogation of the osteomimic phenotype in ovarian cancer cells might occur during the development of inverse resistance between PTX and CDDP.
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Affiliation(s)
- Jolanta Szenajch
- Laboratory for Molecular Oncology and Innovative Therapies, Military Institute of Medicine, 04-141 Warsaw, Poland;
| | - Alicja Szabelska-Beręsewicz
- Department of Mathematical and Statistical Methods, Poznań University of Life Sciences, 60-637 Poznań, Poland; (A.S.-B.); (J.Z.-W.); (I.S.)
| | - Aleksandra Świercz
- Laboratory of Genomics, Institute of Bioorganic Chemistry, Polish Academy of Science, 61-704 Poznań, Poland; (A.Ś.); (M.G.); (L.H.)
- Institute of Computing Science, Poznan University of Technology, 60-965 Poznań, Poland
| | - Joanna Zyprych-Walczak
- Department of Mathematical and Statistical Methods, Poznań University of Life Sciences, 60-637 Poznań, Poland; (A.S.-B.); (J.Z.-W.); (I.S.)
| | - Idzi Siatkowski
- Department of Mathematical and Statistical Methods, Poznań University of Life Sciences, 60-637 Poznań, Poland; (A.S.-B.); (J.Z.-W.); (I.S.)
| | - Michał Góralski
- Laboratory of Genomics, Institute of Bioorganic Chemistry, Polish Academy of Science, 61-704 Poznań, Poland; (A.Ś.); (M.G.); (L.H.)
| | - Agnieszka Synowiec
- Laboratory for Molecular Oncology and Innovative Therapies, Military Institute of Medicine, 04-141 Warsaw, Poland;
| | - Luiza Handschuh
- Laboratory of Genomics, Institute of Bioorganic Chemistry, Polish Academy of Science, 61-704 Poznań, Poland; (A.Ś.); (M.G.); (L.H.)
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Bukovsky A. Immunology of tissue homeostasis, ovarian cancer growth and regression, and long lasting cancer immune prophylaxis - review of literature. Histol Histopathol 2020; 36:31-46. [PMID: 32896865 DOI: 10.14670/hh-18-261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Data on the substantial physiological role of the immune system in the organism's ability to manage proper differentiation and function of normal tissues (tissue homeostasis), and detailed causes of the immune system's essential role for the in-vivo stimulation of cancer growth, are severely lacking. This results in a lack of effective cancer immunotherapy without adverse events, and in the lack of long-lasting cancer immune prophylaxes, particularly in ovarian cancers. Elimination of blood auto-antibodies blocking anti-cancer T cell effectors by intermittent moderate doses of cyclophosphamide, facilitation of the immune system reactivity against alloantigens of cancer cells by two subsequent blood transfusions, and augmentation of anticancer immunity by weekly intradermal injections of bacterial toxins, caused during the subsequent treatment-free period, lasting for two to four weeks, regression of inoperable epithelial ovarian cancers and regeneration of the tremendously metastatically altered abdominal tissues into normal healthy conditions without multivisceral cytoreductive surgery, which can result in life-threatening consequences. An otherwise untreated rectal cancer, progressing over 3 years, regressed after severe toxic dermatitis lasting over one week. This was caused by an accidental consumption of a large raw shiitake mushroom. Subsequent daily consumptions of 2 g Metformin ER and honeybee propolis ethanol extract, and weekly single larger raw shiitake mushroom, which all stimulate immune system reactivity against cancer stem cells, prevented malignant recurrence over the next 29 years without recurring dermatitis, and maintained healthy organism's conditions. These observations indicate that regression of advanced inoperable cancers and long-lasting cancer immune prophylaxis can be reached by simple approaches.
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Affiliation(s)
- Antonin Bukovsky
- Biotechnology and Biomedicine Centre of the Academy of Sciences and Charles University, Vestec, Czech Republic.
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Marchetti C, Rosati A, Scambia G, Fagotti A. Secondary cytoreduction in platinum-sensitive recurrent ovarian cancer: are we missing something? ANNALS OF TRANSLATIONAL MEDICINE 2019; 7:S372. [PMID: 32016090 DOI: 10.21037/atm.2019.12.94] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Claudia Marchetti
- Department of Woman, Child and Public Health, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Andrea Rosati
- Department of Woman, Child and Public Health, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy.,Catholic University of the Sacred Heart, Rome, Italy
| | - Giovanni Scambia
- Department of Woman, Child and Public Health, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy.,Catholic University of the Sacred Heart, Rome, Italy
| | - Anna Fagotti
- Department of Woman, Child and Public Health, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy.,Catholic University of the Sacred Heart, Rome, Italy
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Mensah LB, Morton SW, Li J, Xiao H, Quadir MA, Elias KM, Penn E, Richson AK, Ghoroghchian PP, Liu J, Hammond PT. Layer-by-layer nanoparticles for novel delivery of cisplatin and PARP inhibitors for platinum-based drug resistance therapy in ovarian cancer. Bioeng Transl Med 2019; 4:e10131. [PMID: 31249881 PMCID: PMC6584097 DOI: 10.1002/btm2.10131] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Revised: 05/02/2019] [Accepted: 05/03/2019] [Indexed: 12/12/2022] Open
Abstract
Advanced staged high-grade serous ovarian cancer (HGSOC) is the leading cause of gynecological cancer death in the developed world, with 5-year survival rates of only 25-30% due to late-stage diagnosis and the shortcomings of platinum-based therapies. A Phase I clinical trial of a combination of free cisplatin and poly(ADP-ribose) polymerase inhibitors (PARPis) showed therapeutic benefit for HGSOC. In this study, we address the challenge of resistance to platinum-based therapy by developing a targeted delivery approach. Novel electrostatic layer-by-layer (LbL) liposomal nanoparticles (NPs) with a terminal hyaluronic acid layer that facilitates CD44 receptor targeting are designed for selective targeting of HGSOC cells; the liposomes can be formulated to contain both cisplatin and the PARPi drug within the liposomal core and bilayer. The therapeutic effectiveness of LbL NP-encapsulated cisplatin and PARPi alone and in combination was compared with the corresponding free drugs in luciferase and CD44-expressing OVCAR8 orthotopic xenografts in female nude mice. The NPs exhibited prolonged blood circulation half-life, mechanistic staged drug release and targeted codelivery of the therapeutic agents to HGSOC cells. Moreover, compared to the free drugs, the NPs resulted in significantly reduced tumor metastasis, extended survival, and moderated systemic toxicity.
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Affiliation(s)
- Lawrence B. Mensah
- The Koch Institute for Integrative Cancer ResearchMassachusetts Institute of Technology (MIT)CambridgeMA, 02142
- Department of Chemical EngineeringMassachusetts Institute of Technology (MIT)CambridgeMA, 02139
| | - Stephen W. Morton
- The Koch Institute for Integrative Cancer ResearchMassachusetts Institute of Technology (MIT)CambridgeMA, 02142
- Department of Chemical EngineeringMassachusetts Institute of Technology (MIT)CambridgeMA, 02139
| | - Jiahe Li
- The Koch Institute for Integrative Cancer ResearchMassachusetts Institute of Technology (MIT)CambridgeMA, 02142
- Department of Chemical EngineeringMassachusetts Institute of Technology (MIT)CambridgeMA, 02139
| | - Haihua Xiao
- The Koch Institute for Integrative Cancer ResearchMassachusetts Institute of Technology (MIT)CambridgeMA, 02142
- Department of Chemical EngineeringMassachusetts Institute of Technology (MIT)CambridgeMA, 02139
- Institute of Chemistry, Changchun Institute of Applied ChemistryChinese Academy of Sciences, JilinChangchunP.R. China
| | - Mohiuddin A. Quadir
- The Koch Institute for Integrative Cancer ResearchMassachusetts Institute of Technology (MIT)CambridgeMA, 02142
- Department of Chemical EngineeringMassachusetts Institute of Technology (MIT)CambridgeMA, 02139
- Department of Coatings and Polymeric MaterialsNorth Dakota State UniversityFargoND, 58108
| | - Kevin M. Elias
- The Koch Institute for Integrative Cancer ResearchMassachusetts Institute of Technology (MIT)CambridgeMA, 02142
- Department of Chemical EngineeringMassachusetts Institute of Technology (MIT)CambridgeMA, 02139
- Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, and Reproductive BiologyBrigham and Women's HospitalBostonMA, 02115
| | - Emily Penn
- The Koch Institute for Integrative Cancer ResearchMassachusetts Institute of Technology (MIT)CambridgeMA, 02142
- Department of Chemical EngineeringMassachusetts Institute of Technology (MIT)CambridgeMA, 02139
| | - Aysen K. Richson
- The Koch Institute for Integrative Cancer ResearchMassachusetts Institute of Technology (MIT)CambridgeMA, 02142
- Department of Chemical EngineeringMassachusetts Institute of Technology (MIT)CambridgeMA, 02139
| | - Paiman Peter Ghoroghchian
- The Koch Institute for Integrative Cancer ResearchMassachusetts Institute of Technology (MIT)CambridgeMA, 02142
- Dana‐Farber Cancer InstituteBostonMA, 02115
| | - Joyce Liu
- Dana‐Farber Cancer InstituteBostonMA, 02115
| | - Paula T. Hammond
- The Koch Institute for Integrative Cancer ResearchMassachusetts Institute of Technology (MIT)CambridgeMA, 02142
- Department of Chemical EngineeringMassachusetts Institute of Technology (MIT)CambridgeMA, 02139
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Prahm KP, Høgdall C, Karlsen MA, Christensen IJ, Novotny GW, Høgdall E. Identification and validation of potential prognostic and predictive miRNAs of epithelial ovarian cancer. PLoS One 2018; 13:e0207319. [PMID: 30475821 PMCID: PMC6261038 DOI: 10.1371/journal.pone.0207319] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2018] [Accepted: 10/29/2018] [Indexed: 12/17/2022] Open
Abstract
Background Ovarian cancer is the leading cause of death by gynecologic cancers in the Western world. The aim of the study was to identify microRNAs (miRNAs) associated with prognosis and/or resistance to chemotherapy among patients with epithelial ovarian cancer. Methods Using information from the Pelvic Mass Study we identified a cohort of women with epithelial ovarian cancer. Tumor tissues were then collected and analyzed by global miRNA microarrays. MiRNA profiling was then linked to survival and time to progression using Cox proportional-hazards regression models. Logistic regression models were used for the analysis of resistance to chemotherapy. Our results were validated using external datasets retrieved from the NCBI Gene Expression Omnibus database. Results A total of 197 patients with epithelial ovarian cancer were included for miRNA microarray analysis. In multivariate analyses we identified a number of miRNAs significantly correlated with overall survival (miR-1183 (HR: 1.42, 95% CI:1.17–1.74, p = 0.0005), miR-126-3p (HR: 1.38, 95% CI:1.11–1.71, p = 0.0036), time to progression (miR-139-3p (HR: 1.48, 95% CI: 1.13–1.94, p = 0.0047), miR-802 (HR: 0.48, 95% CI: 0.29–0.78, p = 0.0035)), progression free survival (miR-23a-5p (HR:1.32, 95% CI:1.09–1.61, p = 0.004), miR-23a-3p (HR:1.70, 95% CI:1.15–2.51, p = 0.0074), miR-802 (HR: 0.48, 95% CI: 0.29–0.80, p = 0.0048)), and resistance to chemotherapy (miR-1234 (HR: 0.26, 95% CI: 0.11–0.64, p = 0.003)). A few miRNAs identified in our training cohort, were validated in external cohorts with similar results. Conclusion Eight miRNAs were identified as significant predictors of overall survival, progression free survival, time to progression, and chemotherapy resistance. A number of these miRNAs were significantly validated using external datasets. Inter-platform and inter-laboratory variations may have influence on the ability to compare and reproduce miRNA results. The use of miRNAs as potential markers of relapse and survival in ovarian cancer warrants further investigation.
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Affiliation(s)
- Kira Philipsen Prahm
- Department of Pathology, Molecular unit, Danish CancerBiobank, Herlev University Hospital, Herlev, Denmark
- Gynecological Clinic, The Juliane Marie Center, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
- * E-mail:
| | - Claus Høgdall
- Gynecological Clinic, The Juliane Marie Center, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - Mona Aarenstrup Karlsen
- Department of Pathology, Molecular unit, Danish CancerBiobank, Herlev University Hospital, Herlev, Denmark
- Gynecological Clinic, The Juliane Marie Center, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - Ib Jarle Christensen
- Department of Pathology, Molecular unit, Danish CancerBiobank, Herlev University Hospital, Herlev, Denmark
| | - Guy Wayne Novotny
- Department of Pathology, Molecular unit, Danish CancerBiobank, Herlev University Hospital, Herlev, Denmark
| | - Estrid Høgdall
- Department of Pathology, Molecular unit, Danish CancerBiobank, Herlev University Hospital, Herlev, Denmark
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Nakatsuka E, Sawada K, Nakamura K, Yoshimura A, Kinose Y, Kodama M, Hashimoto K, Mabuchi S, Makino H, Morii E, Yamaguchi Y, Yanase T, Itai A, Morishige KI, Kimura T. Plasminogen activator inhibitor-1 is an independent prognostic factor of ovarian cancer and IMD-4482, a novel plasminogen activator inhibitor-1 inhibitor, inhibits ovarian cancer peritoneal dissemination. Oncotarget 2017; 8:89887-89902. [PMID: 29163796 PMCID: PMC5685717 DOI: 10.18632/oncotarget.20834] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Accepted: 08/06/2017] [Indexed: 12/04/2022] Open
Abstract
In the present study, the therapeutic potential of targeting plasminogen activator inhibitor-1 (PAI-1) in ovarian cancer was tested. Tissues samples from 154 cases of ovarian carcinoma were immunostained with anti-PAI-1 antibody, and the prognostic value was analyzed. Among the samples, 67% (104/154) showed strong PAI-1 expression; this was significantly associated with poor prognosis (progression-free survival: 20 vs. 31 months, P = 0.0033). In particular, among patients with stage II-IV serous adenocarcinoma, PAI-1 expression was an independent prognostic factor. The effect of a novel PAI-1 inhibitor, IMD-4482, on ovarian cancer cell lines was assessed and its therapeutic potential was examined using a xenograft mouse model of ovarian cancer. IMD-4482 inhibited in vitro cell adhesion to vitronectin in PAI-1-positive ovarian cancer cells, followed by the inhibition of extracellular signal-regulated kinase and focal adhesion kinase phosphorylation through dissociation of the PAI-urokinase receptor complex from integrin αVβ3. IMD-4482 caused G0/G1 cell arrest and inhibited the proliferation of PAI-1-positive ovarian cancer cells. In the xenograft model, IMD-4482 significantly inhibited peritoneal dissemination with the reduction of PAI-1 expression and the inhibition of focal adhesion kinase phosphorylation. Collectively, the functional inhibition of PAI-1 significantly inhibited ovarian cancer progression, and targeting PAI-1 may be a potential therapeutic strategy in ovarian cancer.
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Affiliation(s)
- Erika Nakatsuka
- Department of Obstetrics and Gynecology, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Kenjiro Sawada
- Department of Obstetrics and Gynecology, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Koji Nakamura
- Department of Obstetrics and Gynecology, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Akihito Yoshimura
- Department of Obstetrics and Gynecology, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Yasuto Kinose
- Department of Obstetrics and Gynecology, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Michiko Kodama
- Department of Obstetrics and Gynecology, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Kae Hashimoto
- Department of Obstetrics and Gynecology, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Seiji Mabuchi
- Department of Obstetrics and Gynecology, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Hiroshi Makino
- Department of Obstetrics and Gynecology, Gifu University Graduate School of Medicine, Gifu, Gifu, Japan
| | - Eiichi Morii
- Department of Pathology, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | | | | | | | - Ken-ichirou Morishige
- Department of Obstetrics and Gynecology, Gifu University Graduate School of Medicine, Gifu, Gifu, Japan
| | - Tadashi Kimura
- Department of Obstetrics and Gynecology, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
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Zhao X, Huang L, Xu W, Chen X, Shen Y, Zeng W, Chen X. Physapubescin B inhibits tumorgenesis and circumvents taxol resistance of ovarian cancer cells through STAT3 signaling. Oncotarget 2017; 8:70130-70141. [PMID: 29050266 PMCID: PMC5642541 DOI: 10.18632/oncotarget.19593] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Accepted: 06/28/2017] [Indexed: 01/05/2023] Open
Abstract
Ovarian cancer is the most lethal gynaecological malignancy. Recurrence and subsequent resistance to chemotherapy have become major obstacles to treating these diseases. In the present study, we showed that a natural withanolide isolated from the plant Physalis pubescens L. (Solanaceae), Physapubescin B, exhibited potent anti-tumor activity against ovarian cancer cells. Physapubescin B promoted apoptosis, induced cell-cycle arrest and inhibited invasion of ES-2 and A2780 cells. Physapubescin B treatment also resulted in suppression of the transcriptional activity of STAT3, an oncogenic transcription factor activated in many human malignancies including ovarian cancer, through disturbing the dimerization of STAT3, and thereby inhibited the nuclear translocation of Tyr705/Ser727-phosphorylated STAT3. The IL-6-stimulated activation of STAT3 and its downstream genes Cyclin D1, survivin, and Bcl-xL was also repressed by Physapubescin B. Furthermore, Physapubescin B sensitizes A2780 cells to taxol-induced cell growth inhibition in vitro. These findings strongly suggest that Physapubescin B has potential antitumor activity and may circumvent taxol resistance in human ovarian cancer cells through inhibition of aberrant activation of STAT3.
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Affiliation(s)
- Xiaofeng Zhao
- Department of Gynecology, Zhejiang Provincial People's Hospital, Hangzhou, Zhejiang Province, China.,Key Laboratory of Tumor Molecular Diagnosis and Individualized Medicine of Zhejiang Province, Hangzhou, Zhejiang Province, China
| | - Lu Huang
- Department of Gynecology, Zhejiang Provincial People's Hospital, Hangzhou, Zhejiang Province, China
| | - Wanwan Xu
- Department of Gynecology, Zhejiang Provincial People's Hospital, Hangzhou, Zhejiang Province, China.,Bengbu Medical College, Bengbu, Anhui Province, China
| | - Xiaoyan Chen
- Department of Gynecology, Zhejiang Provincial People's Hospital, Hangzhou, Zhejiang Province, China
| | - Yan Shen
- Department of Gynecology, Zhejiang Provincial People's Hospital, Hangzhou, Zhejiang Province, China
| | - Wenjie Zeng
- Department of Gynecology, Zhejiang Provincial People's Hospital, Hangzhou, Zhejiang Province, China
| | - Xiao Chen
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang Province, China
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Papa A, Caruso D, Strudel M, Tomao S, Tomao F. Update on Poly-ADP-ribose polymerase inhibition for ovarian cancer treatment. J Transl Med 2016; 14:267. [PMID: 27634150 PMCID: PMC5024442 DOI: 10.1186/s12967-016-1027-1] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Accepted: 09/05/2016] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Despite standard treatment for epithelial ovarian cancer (EOC), that involves cytoreductive surgery followed by platinum-based chemotherapy, and initial high response rates to these, up to 80 % of patients experience relapses with a median progression-free survival of 12-18 months. There remains an urgent need for novel targeted therapies to improve clinical outcomes in ovarian cancer. Of the many targeted therapies currently under evaluation, the most promising strategies developed thus far are antiangiogenic agents and Poly(ADP-ribose) polymerase (PARP) inhibitors. Particularly, PARP inhibitors are active in cells that have impaired repair of DNA by the homologous recombination (HR) pathway. Cells with mutated breast related cancer antigens (BRCA) function have HR deficiency, which is also present in a significant proportion of non-BRCA-mutated ovarian cancer ("BRCAness" ovarian cancer). The prevalence of germline BRCA mutations in EOC has historically been estimated to be around 10-15 %. However, recent reports suggest that this may be a gross underestimate, especially in women with high-grade serous ovarian cancer (HGSOC). The emergence of the DNA repair pathway as a rational target in various cancers led to the development of the PARP inhibitors. The concept of tumor-selective synthetic lethality heralded the beginning of an eventful decade, culminating in the approval by regulatory authorities both in Europe as a maintenance therapy and in the United States treatment for advanced recurrent disease of the first oral PARP inhibitor, olaparib, for the treatment of BRCA-mutated ovarian cancer patients. Other PARP inhibitors are clearly effective in this disease and, within the next years, the results of ongoing randomized trials will clarify their respective roles. CONCLUSION This review will discuss the different PARP inhibitors in development and the potential use of this class of agents in the future. Moreover, combination strategies involving PARP inhibitors are likely to receive increasing attention. The utility of PARP inhibitors combined with cytotoxic chemotherapy is of doubtful value, because of enhanced toxicity of this combination; while, more promising strategies include the combination with antiangiogenic agents, or with inhibitors of the P13K/AKT pathway and new generation of immunotherapy.
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Affiliation(s)
- Anselmo Papa
- Oncology Unit, Department of Medico-Surgical Sciences and Biotechnologies, University of Rome “Sapienza”, Latina, Italy
| | - Davide Caruso
- Oncology Unit, Department of Medico-Surgical Sciences and Biotechnologies, University of Rome “Sapienza”, Latina, Italy
| | - Martina Strudel
- Oncology Unit, Department of Medico-Surgical Sciences and Biotechnologies, University of Rome “Sapienza”, Latina, Italy
| | - Silverio Tomao
- Oncology Unit, Department of Radiological Sciences, Oncology and Pathology, University of Rome “Sapienza”, Latina, Italy
| | - Federica Tomao
- Department of Gynaecology and Obstetrics, University of Rome “Sapienza”, Policlinico “Umberto I”, Rome, Italy
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Imperiale L, Marchetti C, Salerno L, Iadarola R, Bracchi C, Vertechy L, di Francesco L, Musella A, Bevilacqua E, Pennesi P, Palaia I, Panici PB. Nonabsorbable suture granuloma mimicking ovarian cancer recurrence at combined positron emission tomography/computed tomography evaluation: a case report. J Med Case Rep 2014; 8:202. [PMID: 24942653 PMCID: PMC4082177 DOI: 10.1186/1752-1947-8-202] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2014] [Accepted: 04/22/2014] [Indexed: 11/30/2022] Open
Abstract
Introduction This is the first case of suture granuloma mimicking isolated ovarian cancer relapse. Only six analogous cases have been previously reported in other malignancies. Case presentation We report the case of a 44-year-old Caucasian woman with partially platinum-sensitive ovarian cancer in which radiological features, including computed tomography and combined 18F-fluorodeoxyglucose-positron emission tomography/computed tomography, were strongly suggestive of isolated cancer relapse in her right subdiaphragmatic region. Laparoscopic examination resulted negative, but was not completely suitable due to widespread adhesive syndrome. The laparotomy for secondary cytoreductive surgery and biopsy of the suspected area showed inflammatory granuloma caused by nonabsorbable propylene suture, without evidence of neoplastic cells. Moreover, unexpected peritoneal carcinosis was found. Conclusions This evidence suggests that clinical details about previous surgical procedures are necessary for adequate interpretation. Although much progress has been made in imaging techniques, especially in the promising field of combined 18F-fluorodeoxyglucose positron emission tomography/computed tomography, these procedures should be still thoroughly investigated in order to promptly rule out tumor recurrence and avoid unnecessary surgery.
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Affiliation(s)
| | - Claudia Marchetti
- Department of Gynecological and Obstetrical Sciences and Urological Sciences, Sapienza University of Rome, Via del Policlinico, 155, 00161 Rome, Italy.
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11
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Donovan HS, Ward SE, Sereika SM, Knapp JE, Sherwood PR, Bender CM, Edwards RP, Fields M, Ingel R. Web-based symptom management for women with recurrent ovarian cancer: a pilot randomized controlled trial of the WRITE Symptoms intervention. J Pain Symptom Manage 2014; 47:218-30. [PMID: 24018206 PMCID: PMC3932314 DOI: 10.1016/j.jpainsymman.2013.04.005] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/22/2012] [Revised: 04/10/2013] [Accepted: 04/19/2013] [Indexed: 11/23/2022]
Abstract
CONTEXT Little research has focused on symptom management among women with ovarian cancer. Written Representational Intervention To Ease Symptoms (WRITE Symptoms) is an educational intervention delivered through asynchronous web-based message boards between a study participant and a nurse. OBJECTIVES We evaluated WRITE Symptoms for 1) feasibility of conducting the study via message boards, 2) system usability, 3) participant satisfaction, and 4) initial efficacy. METHODS Participants were 65 women (mean age, 56.5; SD = 9.23) with recurrent ovarian cancer randomized using minimization with race/ethnicity (non-Hispanic white vs. minority) as the stratification factor. Measures were obtained at baseline and two and six weeks after intervention. Outcomes were feasibility of conducting the study, system usability, participant satisfaction, and efficacy (symptom severity, distress, consequences, and controllability). RESULTS Fifty-six (87.5%) participants were retained, and the mean usability score (range 1-7) was 6.18 (SD = 1.29). All satisfaction items were scored at 5 (of 7) or higher. There were significant between-group effects at T2 for symptom distress, with those in the WRITE Symptoms group reporting lower distress than those in the control group [t(88.4) = -2.57; P = 0.012], with a similar trend for symptom severity [t(40.4) = -1.95; P = 0.058]. Repeated measures analysis also supported a group effect, with those in the WRITE Symptoms group reporting lower symptom distress than those in the control condition [F(1, 56.7) = 4.59; P = 0.037]. CONCLUSION Participants found the intervention and assessment system easy to use and had high levels of satisfaction. Initial efficacy was supported by decreases in symptom severity and distress.
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Affiliation(s)
- Heidi S Donovan
- University of Pittsburgh School of Nursing, Pittsburgh, Pennsylvania, USA.
| | - Sandra E Ward
- University of Wisconsin-Madison School of Nursing, Madison, Wisconsin, USA
| | - Susan M Sereika
- University of Pittsburgh School of Nursing, Pittsburgh, Pennsylvania, USA
| | - Judith E Knapp
- University of Pittsburgh School of Nursing, Pittsburgh, Pennsylvania, USA
| | - Paula R Sherwood
- University of Pittsburgh School of Nursing, Pittsburgh, Pennsylvania, USA
| | - Catherine M Bender
- University of Pittsburgh School of Nursing, Pittsburgh, Pennsylvania, USA
| | | | - Margaret Fields
- University of Texas M. D. Anderson Cancer Center, Houston, Texas, USA
| | - Renee Ingel
- University of Pittsburgh School of Nursing, Pittsburgh, Pennsylvania, USA; Carlow University, Pittsburgh, Pennsylvania, USA
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12
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Tomao F, Papa A, Rossi L, Strudel M, Vici P, Lo Russo G, Tomao S. Emerging role of cancer stem cells in the biology and treatment of ovarian cancer: basic knowledge and therapeutic possibilities for an innovative approach. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2013; 32:48. [PMID: 23902592 PMCID: PMC3734167 DOI: 10.1186/1756-9966-32-48] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 06/26/2013] [Accepted: 07/29/2013] [Indexed: 12/14/2022]
Abstract
In 2013 there will be an estimated 22,240 new diagnoses and 14,030 deaths from ovarian cancer in the United States. Despite the improved surgical approach and the novel active drugs that are available today in clinical practice, about 80% of women presenting with late-stage disease have a 5-year survival rate of only 30%. In the last years a growing scientific knowledge about the molecular pathways involved in ovarian carcinogenesis has led to the discovery and evaluation of several novel molecular targeted agents, with the aim to test alternative models of treatment in order to overcome the clinical problem of resistance. Cancer stem cells tend to be more resistant to chemotherapeutic agents and radiation than more differentiated cellular subtypes from the same tissue. In this context the study of ovarian cancer stem cells is taking on an increasingly important strategic role, mostly for the potential therapeutic application in the next future. In our review, we focused our attention on the molecular characteristics of epithelial ovarian cancer stem cells, in particular on possible targets to hit with targeted therapies.
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Affiliation(s)
- Federica Tomao
- Department of Gynaecology and Obstetrics, University of Rome, Sapienza, Rome, Italy
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13
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Tomao F, Papa A, Rossi L, Caruso D, Panici PB, Venezia M, Tomao S. Current status of bevacizumab in advanced ovarian cancer. Onco Targets Ther 2013; 6:889-99. [PMID: 23901283 PMCID: PMC3724566 DOI: 10.2147/ott.s46301] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Ovarian cancer is the most lethal gynecological cancer, mainly because of the delay in diagnosis. Recently, much effort has been put into investigating and introducing novel targeted agents into clinical practice, with the aim of improving prognosis and quality of life. Angiogenesis is a possible target. The aim of this review is to investigate the most common molecular pathways of angiogenesis, which have provided novel targets for tailored therapy in patients with ovarian cancer. These therapeutic strategies include monoclonal antibodies and tyrosine-kinase inhibitors. These drugs have as molecular targets vascular endothelial growth factor, vascular endothelial growth factor receptors, platelet-derived growth factor, fibroblast growth factor, and angiopoietin. Bevacizumab was investigated in several Phase III studies, with interesting results. Today, there is strong evidence for introducing bevacizumab in the treatment of patients with advanced and recurrent ovarian cancer. Nevertheless, further investigations and large clinical trials are needed to understand the safety and effectiveness of bevacizumab, the optimal duration and timing of treatment, and activity in association with other chemotherapeutic and targeted agents. It also is necessary to identify biologic factors predictive of efficacy to choose the most appropriate antiangiogenic agent in the integrated treatment of epithelial ovarian cancer.
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Affiliation(s)
- Federica Tomao
- Department of Gynaecology and Obstetrics, “Sapienza” University of Rome, Policlinico “Umberto I,” Rome, Italy
| | - Anselmo Papa
- Department of Medico-Surgical Sciences and Biotechnologies, “Sapienza” University of Rome, Oncology Unit, “ICOT,” Latina, Italy
| | - Luigi Rossi
- Department of Medico-Surgical Sciences and Biotechnologies, “Sapienza” University of Rome, Oncology Unit, “ICOT,” Latina, Italy
| | - Davide Caruso
- Department of Medico-Surgical Sciences and Biotechnologies, “Sapienza” University of Rome, Oncology Unit, “ICOT,” Latina, Italy
| | - Pierluigi Benedetti Panici
- Department of Gynaecology and Obstetrics, “Sapienza” University of Rome, Policlinico “Umberto I,” Rome, Italy
| | - Martina Venezia
- Department of Medico-Surgical Sciences and Biotechnologies, “Sapienza” University of Rome, Oncology Unit, “ICOT,” Latina, Italy
| | - Silverio Tomao
- Department of Medico-Surgical Sciences and Biotechnologies, “Sapienza” University of Rome, Oncology Unit, “ICOT,” Latina, Italy
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14
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Ali MW, Cacan E, Liu Y, Pierce JY, Creasman WT, Murph MM, Govindarajan R, Eblen ST, Greer SF, Hooks SB. Transcriptional suppression, DNA methylation, and histone deacetylation of the regulator of G-protein signaling 10 (RGS10) gene in ovarian cancer cells. PLoS One 2013; 8:e60185. [PMID: 23533674 PMCID: PMC3606337 DOI: 10.1371/journal.pone.0060185] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2012] [Accepted: 02/22/2013] [Indexed: 01/10/2023] Open
Abstract
RGS10 regulates ovarian cancer cell growth and survival, and RGS10 expression is suppressed in cell models of ovarian cancer chemoresistance. However, the mechanisms governing RGS10 expression in ovarian cancer are poorly understood. Here we report RGS10 suppression in primary ovarian cancer and CAOV-3 ovarian cancer cells compared to immortalized ovarian surface epithelial (IOSE) cells, and in A2780-AD chemoresistant cells compared to parental A2780 cells. RGS10-1 and RGS10-2 transcripts are expressed in ovarian cancer cells, but only RGS10-1 is suppressed in A2780-AD and CAOV-3 cells, and the RGS10-1 promoter is uniquely enriched in CpG dinucleotides. Pharmacological inhibition of DNA methyl-transferases (DNMTs) increased RGS10 expression, suggesting potential regulation by DNA methylation. Bisulfite sequencing analysis identified a region of the RGS10-1 promoter with significantly enhanced DNA methylation in chemoresistant A2780-AD cells relative to parental A2780 cells. DNA methylation in CAOV-3 and IOSE cells was similar to A2780 cells. More marked differences were observed in histone acetylation of the RGS10-1 promoter. Acetylated histone H3 associated with the RGS10-1 promoter was significantly lower in A2780-AD cells compared to parental cells, with a corresponding increase in histone deacetylase (HDAC) enzyme association. Similarly, acetylated histone levels at the RGS10-1 promoter were markedly lower in CAOV-3 cells compared to IOSE cells, and HDAC1 binding was doubled in CAOV-3 cells. Finally, we show that pharmacological inhibition of DNMT or HDAC enzymes in chemoresistant A2780-AD cells increases RGS10 expression and enhances cisplatin toxicity. These data suggest that histone de-acetylation and DNA methylation correlate with RGS10 suppression and chemoresistance in ovarian cancer. Markers for loss of RGS10 expression may identify cancer cells with unique response to therapeutics.
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Affiliation(s)
- Mourad W. Ali
- Department of Pharmaceutical and Biomedical Sciences, University of Georgia, Athens, Georgia, United States of America
| | - Ercan Cacan
- Department of Biology, Georgia State University, Atlanta, Georgia, United States of America
| | - Yuying Liu
- Department of Cell and Molecular Pharmacology, Medical University of South Carolina, Charleston, South Carolina, United States of America
| | - Jennifer Young Pierce
- Department of Obstetrics and Gynecology, Medical University of South Carolina, Charleston, South Carolina, United States of America
- Hollings Cancer Center, Medical University of South Carolina, Charleston, South Carolina, United States of America
| | - William T. Creasman
- Department of Obstetrics and Gynecology, Medical University of South Carolina, Charleston, South Carolina, United States of America
- Hollings Cancer Center, Medical University of South Carolina, Charleston, South Carolina, United States of America
| | - Mandi M. Murph
- Department of Pharmaceutical and Biomedical Sciences, University of Georgia, Athens, Georgia, United States of America
| | - Rajgopal Govindarajan
- Department of Pharmaceutical and Biomedical Sciences, University of Georgia, Athens, Georgia, United States of America
| | - Scott T. Eblen
- Department of Cell and Molecular Pharmacology, Medical University of South Carolina, Charleston, South Carolina, United States of America
- Hollings Cancer Center, Medical University of South Carolina, Charleston, South Carolina, United States of America
| | - Susanna F. Greer
- Department of Biology, Georgia State University, Atlanta, Georgia, United States of America
| | - Shelley B. Hooks
- Department of Pharmaceutical and Biomedical Sciences, University of Georgia, Athens, Georgia, United States of America
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Kim A, Ueda Y, Naka T, Enomoto T. Therapeutic strategies in epithelial ovarian cancer. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2012; 31:14. [PMID: 22330607 PMCID: PMC3309949 DOI: 10.1186/1756-9966-31-14] [Citation(s) in RCA: 236] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 01/05/2012] [Accepted: 02/13/2012] [Indexed: 12/31/2022]
Abstract
Ovarian cancer is the most lethal gynecologic malignancy. It appears that the vast majority of what seem to be primary epithelial ovarian and primary peritoneal carcinomas is, in fact, secondary from the fimbria, the most distal part of the fallopian tube. Treatment of epithelial ovarian cancer is based on the combination of cytoreductive surgery and combination chemotherapy using taxane and platinum. Although clear cell type is categorized in indolent type, it is known to show relatively strong resistance to carboplatin and paclitaxel regimen and thus poor prognosis compared to serous adenocarcinoma, especially in advanced stages. Irinotecan plus cisplatin therapy may effective for the clear cell adenocarcinoma. The larger expectation for improved prognosis in ovarian carcinoma is related to the use of the new biological agents. One of the most investigated and promising molecular targeted drugs in ovarian cancer is bevacizumab, a monoclonal antibody directed against VEGF. PARP inhibitor is another one. A few recent studies demonstrated positive results of bevacizumab on progression-free survival in ovarian cancer patients, however, investigation of molecular targeting drugs in patients with ovarian cancer are still underway.
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Affiliation(s)
- Ayako Kim
- Department of Obstetrics and Gynecology, Osaka University Graduate School of Medicine, 2-2, Yamadaoka, Suita, Osaka 565-0871, Japan
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Boettcher M, Kischkel F, Hoheisel JD. High-definition DNA methylation profiles from breast and ovarian carcinoma cell lines with differing doxorubicin resistance. PLoS One 2010; 5:e11002. [PMID: 20544021 PMCID: PMC2882327 DOI: 10.1371/journal.pone.0011002] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2010] [Accepted: 05/18/2010] [Indexed: 12/31/2022] Open
Abstract
Acquired drug resistance represents a frequent obstacle which hampers efficient chemotherapy of cancers. The contribution of aberrant DNA methylation to the development of drug resistant tumor cells has gained increasing attention over the past decades. Hence, the objective of the presented study was to characterize DNA methylation changes which arise from treatment of tumor cells with the chemotherapeutic drug doxorubicin. DNA methylation levels from CpG islands (CGIs) linked to twenty-eight genes, whose expression levels had previously been shown to contribute to resistance against DNA double strand break inducing drugs or tumor progression in different cancer types were analyzed. High-definition DNA methylation profiles which consisted of methylation levels from 800 CpG sites mapping to CGIs around the transcription start sites of the selected genes were determined. In order to investigate the influence of CGI methylation on the expression of associated genes, their mRNA levels were investigated via qRT-PCR. It was shown that the employed method is suitable for providing highly accurate methylation profiles, comparable to those obtained via clone sequencing, the gold standard for high-definition DNA methylation studies. In breast carcinoma cells with acquired resistance against the double strand break inducing drug doxorubicin, changes in methylation of specific cytosines from CGIs linked to thirteen genes were detected. Moreover, similarities between methylation profiles obtained from breast and ovarian carcinoma cell lines with acquired doxorubicin resistance were found. The expression levels of a subset of analyzed genes were shown to be linked to the methylation levels of the analyzed CGIs. Our results provide detailed DNA methylation information from two separate model systems for acquired doxorubicin resistance and suggest the occurrence of similar methylation changes in both systems upon exposure to the drug.
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Affiliation(s)
- Michael Boettcher
- Division of Functional Genome Analysis, Deutsches Krebsforschungszentrum, Heidelberg, Germany.
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