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Akhoundova D, Francica P, Rottenberg S, Rubin MA. DNA Damage Response and Mismatch Repair Gene Defects in Advanced and Metastatic Prostate Cancer. Adv Anat Pathol 2024; 31:61-69. [PMID: 38008971 PMCID: PMC10846598 DOI: 10.1097/pap.0000000000000422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2023]
Abstract
Alterations in DNA damage response (DDR) and related genes are present in up to 25% of advanced prostate cancers (PCa). Most frequently altered genes are involved in the homologous recombination repair, the Fanconi anemia, and the mismatch repair pathways, and their deficiencies lead to a highly heterogeneous spectrum of DDR-deficient phenotypes. More than half of these alterations concern non- BRCA DDR genes. From a therapeutic perspective, poly-ADP-ribose polymerase inhibitors have demonstrated robust clinical efficacy in tumors with BRCA2 and BRCA1 alterations. Mismatch repair-deficient PCa, and a subset of CDK12-deficient PCa, are vulnerable to immune checkpoint inhibitors. Emerging data point to the efficacy of ATR inhibitors in PCa with ATM deficiencies. Still, therapeutic implications are insufficiently clarified for most of the non- BRCA DDR alterations, and no successful targeted treatment options have been established.
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Affiliation(s)
- Dilara Akhoundova
- Department for BioMedical Research
- Department of Medical Oncology
- Bern Center for Precision Medicine, Inselspital, University Hospital of Bern, Bern, Switzerland
| | - Paola Francica
- Department for BioMedical Research
- Institute of Animal Pathology, Vetsuisse Faculty, University of Bern
- Bern Center for Precision Medicine, Inselspital, University Hospital of Bern, Bern, Switzerland
| | - Sven Rottenberg
- Department for BioMedical Research
- Institute of Animal Pathology, Vetsuisse Faculty, University of Bern
- Bern Center for Precision Medicine, Inselspital, University Hospital of Bern, Bern, Switzerland
| | - Mark A. Rubin
- Department for BioMedical Research
- Bern Center for Precision Medicine, Inselspital, University Hospital of Bern, Bern, Switzerland
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Uehara R, Obinata D, Hashimoto S, Nakahara K, Uchida H, Yoshizawa T, Mochida J, Yamaguchi K, Sakaguchi M, Ozawa Y, Mori F, Miura K, Ishige T, Masuda S, Nakayama T, Takahashi S. Brain metastasis in a patient with BRCA2-mutated treatment-related neuroendocrine prostate carcinoma and long-term response to radiotherapy and Olaparib: A case report and literature review. Medicine (Baltimore) 2024; 103:e37371. [PMID: 38428891 PMCID: PMC10906585 DOI: 10.1097/md.0000000000037371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/25/2023] [Accepted: 02/05/2024] [Indexed: 03/03/2024] Open
Abstract
BACKGROUND A new subtype of prostate cancer called treatment-related neuroendocrine prostate carcinoma (t-NEPC) was added to the revised World Health Organization classification of prostate cancer in 2022. t-NEPC cases are increasing, and there is no established standard treatment. METHODS A 49-year-old male patient was referred to our department for dysuria. A rectal examination and a prostate biopsy revealed stony hardness and prostate adenocarcinoma, respectively. Imaging studies confirmed the presence of multiple bone and lymph node metastases. The patient was started on upfront treatment with androgen deprivation therapy and an androgen receptor signaling inhibitor, which resulted in a significant (>90%) decrease in prostate-specific antigen (PSA) levels. The patient experienced postrenal failure 6 months later, attributable to local disease progression. Concurrently, there was an elevation in neuron-specific enolase (NSE) levels and an enlargement of pelvic lymph node metastases, without PSA progression. RESULTS Biopsy specimen for cancer genome profiling revealed deletion of BRCA 2 and PTEN, AR amplification, and the presence of the TMPRSS2-ERG fusion gene. Based on increased NSE and BRCA2 mutations, a diagnosis of t-NEPC with BRCA2 mutation was eventually made. The patient received docetaxel chemotherapy and pelvic radiotherapy. Subsequently, he was treated with olaparib. His NSE levels decreased, and he achieved a complete response (CR). However, 18 months following the olaparib administration, brain metastases appeared despite the absence of pelvic tumor relapse, and the patient's PSA levels remained low. Consequently, the patient underwent resection of the brain metastases using gamma knife and whole-brain radiotherapy but died approximately 3 months later. CONCLUSION SUBSECTIONS Platinum-based chemotherapy is often administered for the treatment of t-NEPC, but there are few reports on the effectiveness of olaparib in patients with BRCA2 mutations. In a literature review, this case demonstrated the longest duration of effectiveness with olaparib alone without platinum-based chemotherapy. Additionally, the occurrence of relatively rare, fatal brain metastases in prostate cancer after a long period of CR suggests the necessity of regular brain imaging examinations.
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Affiliation(s)
- Rio Uehara
- Department of Urology, Nihon University School of Medicine, Itabashi-ku, Tokyo, Japan
| | - Daisuke Obinata
- Department of Urology, Nihon University School of Medicine, Itabashi-ku, Tokyo, Japan
| | - Sho Hashimoto
- Department of Urology, Nihon University School of Medicine, Itabashi-ku, Tokyo, Japan
| | - Ken Nakahara
- Department of Urology, Nihon University School of Medicine, Itabashi-ku, Tokyo, Japan
| | - Hideaki Uchida
- Department of Urology, Nihon University School of Medicine, Itabashi-ku, Tokyo, Japan
| | - Tsuyoshi Yoshizawa
- Department of Urology, Nihon University School of Medicine, Itabashi-ku, Tokyo, Japan
| | - Junichi Mochida
- Department of Urology, Nihon University School of Medicine, Itabashi-ku, Tokyo, Japan
| | - Kenya Yamaguchi
- Department of Urology, Nihon University School of Medicine, Itabashi-ku, Tokyo, Japan
| | - Masakuni Sakaguchi
- Department of Radiology, Nihon University School of Medicine, Itabashi-ku, Tokyo, Japan
| | - Yoshinari Ozawa
- Department of Neurological Surgery, Nihon University School of Medicine, Itabashi-ku, Tokyo, Japan
| | - Fumi Mori
- Department of Neurological Surgery, Nihon University School of Medicine, Itabashi-ku, Tokyo, Japan
| | - Katsuhiro Miura
- Division of Hematology and Oncology, Department of Internal Medicine, Nihon University School of Medicine, Itabashi-ku, Tokyo, Japan
| | - Toshiyuki Ishige
- Division of Oncologic Pathology, Department of Pathology and Microbiology, Nihon University School of Medicine, Itabashi-ku, Tokyo, Japan
| | - Shinobu Masuda
- Division of Oncologic Pathology, Department of Pathology and Microbiology, Nihon University School of Medicine, Itabashi-ku, Tokyo, Japan
| | - Tomohiro Nakayama
- Division of Laboratory Medicine, Department of Pathology and Microbiology, Nihon University School of Medicine, Itabashi-ku, Tokyo, Japan
| | - Satoru Takahashi
- Department of Urology, Nihon University School of Medicine, Itabashi-ku, Tokyo, Japan
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Yu ZC, Li T, Tully E, Huang P, Chen CN, Oberdoerffer P, Gaillard S, Shih IM, Wang TL. Temozolomide Sensitizes ARID1A-Mutated Cancers to PARP Inhibitors. Cancer Res 2023; 83:2750-2762. [PMID: 37306706 PMCID: PMC10527942 DOI: 10.1158/0008-5472.can-22-3646] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 04/02/2023] [Accepted: 06/07/2023] [Indexed: 06/13/2023]
Abstract
ARID1A is a subunit of SWI/SNF chromatin remodeling complexes and is mutated in many types of human cancers, especially those derived from endometrial epithelium, including ovarian and uterine clear cell carcinoma (CCC) and endometrioid carcinoma (EMCA). Loss-of-function mutations in ARID1A alter epigenetic regulation of transcription, cell-cycle checkpoint control, and DNA damage repair. We report here that mammalian cells with ARID1A deficiency harbor accumulated DNA base lesions and increased abasic (AP) sites, products of glycosylase in the first step of base excision repair (BER). ARID1A mutations also delayed recruitment kinetics of BER long-patch repair effectors. Although ARID1A-deficient tumors were not sensitive to monotherapy with DNA-methylating temozolomide (TMZ), the combination of TMZ with PARP inhibitors (PARPi) potently elicited double-strand DNA breaks, replication stress, and replication fork instability in ARID1A-deficient cells. The TMZ and PARPi combination also significantly delayed in vivo growth of ovarian tumor xenografts carrying ARID1A mutations and induced apoptosis and replication stress in xenograft tumors. Together, these findings identified a synthetic lethal strategy to enhance the response of ARID1A-mutated cancers to PARP inhibition, which warrants further experimental exploration and clinical trial validation. SIGNIFICANCE The combination of temozolomide and PARP inhibitor exploits the specific DNA damage repair status of ARID1A-inactivated ovarian cancers to suppress tumor growth.
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Affiliation(s)
- Zheng-Cheng Yu
- Departments of Pathology, Johns Hopkins Medical Institutions, Baltimore, MD, 21231, USA
- Oncology, Johns Hopkins Medical Institutions, Baltimore, MD, 21231, USA
- Gynecology and Obstetrics, Johns Hopkins Medical Institutions, Baltimore, MD, 21231, USA
| | - Tianhe Li
- Departments of Pathology, Johns Hopkins Medical Institutions, Baltimore, MD, 21231, USA
- Oncology, Johns Hopkins Medical Institutions, Baltimore, MD, 21231, USA
- Gynecology and Obstetrics, Johns Hopkins Medical Institutions, Baltimore, MD, 21231, USA
| | - Ellen Tully
- Departments of Pathology, Johns Hopkins Medical Institutions, Baltimore, MD, 21231, USA
- Oncology, Johns Hopkins Medical Institutions, Baltimore, MD, 21231, USA
- Gynecology and Obstetrics, Johns Hopkins Medical Institutions, Baltimore, MD, 21231, USA
| | - Peng Huang
- Oncology, Johns Hopkins Medical Institutions, Baltimore, MD, 21231, USA
| | - Chih-Ning Chen
- Departments of Pathology, Johns Hopkins Medical Institutions, Baltimore, MD, 21231, USA
- Oncology, Johns Hopkins Medical Institutions, Baltimore, MD, 21231, USA
- Gynecology and Obstetrics, Johns Hopkins Medical Institutions, Baltimore, MD, 21231, USA
| | - Philipp Oberdoerffer
- Oncology, Johns Hopkins Medical Institutions, Baltimore, MD, 21231, USA
- Radiation Oncology, Johns Hopkins Medical Institutions, Baltimore, MD, 21231, USA
| | - Stephanie Gaillard
- Oncology, Johns Hopkins Medical Institutions, Baltimore, MD, 21231, USA
- Gynecology and Obstetrics, Johns Hopkins Medical Institutions, Baltimore, MD, 21231, USA
| | - Ie-Ming Shih
- Departments of Pathology, Johns Hopkins Medical Institutions, Baltimore, MD, 21231, USA
- Oncology, Johns Hopkins Medical Institutions, Baltimore, MD, 21231, USA
- Gynecology and Obstetrics, Johns Hopkins Medical Institutions, Baltimore, MD, 21231, USA
| | - Tian-Li Wang
- Departments of Pathology, Johns Hopkins Medical Institutions, Baltimore, MD, 21231, USA
- Oncology, Johns Hopkins Medical Institutions, Baltimore, MD, 21231, USA
- Gynecology and Obstetrics, Johns Hopkins Medical Institutions, Baltimore, MD, 21231, USA
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Borgini M, Wipf P. Synthesis of Veliparib Prodrugs and Determination of Drug-Release-Dependent PARP-1 Inhibition. ACS Med Chem Lett 2023; 14:652-657. [PMID: 37197461 PMCID: PMC10184315 DOI: 10.1021/acsmedchemlett.3c00065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Accepted: 04/20/2023] [Indexed: 05/19/2023] Open
Abstract
Poly(ADP-ribose) polymerase (PARP) plays a key role in repairing DNA damage, and several PARP inhibitors have been approved as treatments in BRCA1/2 mutated breast and ovarian cancers. Mounting evidence also supports their application as neuroprotective agents since PARP overactivation compromises the mitochondrial homeostasis by consumption of NAD+ reserves, leading to an increase in reactive oxygen and nitrogen species and a spike in intracellular Ca2+ levels. Herein, we present the synthesis and preliminary evaluation of new mitochondria-targeting PARP inhibitor prodrugs of (±)-veliparib, with the goal to advance potential neuroprotective properties without impairing the repair of damaged DNA in the nucleus.
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Kanakkanthara A, Hou X, Ekstrom TL, Zanfagnin V, Huehls AM, Kelly RL, Ding H, Larson MC, Vasmatzis G, Oberg AL, Kaufmann SH, Mansfield AS, John Weroha S, Karnitz LM. Repurposing Ceritinib Induces DNA Damage and Enhances PARP Inhibitor Responses in High-Grade Serous Ovarian Carcinoma. Cancer Res 2022; 82:307-319. [PMID: 34810199 PMCID: PMC8770599 DOI: 10.1158/0008-5472.can-21-0732] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Revised: 08/05/2021] [Accepted: 11/15/2021] [Indexed: 12/14/2022]
Abstract
PARP inhibitors (PARPi) have activity in homologous recombination (HR) repair-deficient, high-grade serous ovarian cancers (HGSOC). However, even responsive tumors develop PARPi resistance, highlighting the need to delay or prevent the appearance of PARPi resistance. Here, we showed that the ALK kinase inhibitor ceritinib synergizes with PARPis by inhibiting complex I of the mitochondrial electron transport chain, which increases production of reactive oxygen species (ROS) and subsequent induction of oxidative DNA damage that is repaired in a PARP-dependent manner. In addition, combined treatment with ceritinib and PARPi synergized in HGSOC cell lines irrespective of HR status, and a combination of ceritinib with the PARPi olaparib induced tumor regression more effectively than olaparib alone in HGSOC patient-derived xenograft (PDX) models. Notably, the ceritinib and olaparib combination was most effective in PDX models with preexisting PARPi sensitivity and was well tolerated. These findings unveil suppression of mitochondrial respiration, accumulation of ROS, and subsequent induction of DNA damage as novel effects of ceritinib. They also suggest that the ceritinib and PARPi combination warrants further investigation as a means to enhance PARPi activity in HGSOC, particularly in tumors with preexisting HR defects. SIGNIFICANCE: The kinase inhibitor ceritinib synergizes with PARPi to induce tumor regression in ovarian cancer models, suggesting that ceritinib combined with PARPi may be an effective strategy for treating ovarian cancer.
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Affiliation(s)
- Arun Kanakkanthara
- Department of Oncology, Mayo Clinic, Rochester, Minnesota, USA,Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, Minnesota, USA,To whom correspondence should be addressed: Larry M. Karnitz, Department of Oncology, Gonda 19-300, Mayo Clinic, 200 First Street SW, Rochester, MN 55905. Telephone: 507-284-3124; .; S. John Weroha, Department of Oncology, Guggenheim 13-01C, Mayo Clinic, 200 First Street SW, Rochester, MN 55905. Telephone: 507-284-3731; ; Arun Kanakkanthara, Department of Oncology, Gonda 19-300, Mayo Clinic, 200 First Street SW, Rochester, MN 55905. Telephone: 507-266-0268;
| | - Xiaonan Hou
- Department of Oncology, Mayo Clinic, Rochester, Minnesota, USA
| | | | | | | | - Rebecca L. Kelly
- Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, Minnesota, USA
| | - Husheng Ding
- Department of Oncology, Mayo Clinic, Rochester, Minnesota, USA
| | - Melissa C. Larson
- Department of Quantitative Health Sciences, Division of Clinical Trials and Biostatistics, Mayo Clinic, Rochester, Minnesota, USA
| | - George Vasmatzis
- Center for Individualized Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - Ann L. Oberg
- Department of Quantitative Health Sciences, Division of Computational Biology, Mayo Clinic, Rochester, Minnesota, USA
| | - Scott H. Kaufmann
- Department of Oncology, Mayo Clinic, Rochester, Minnesota, USA,Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, Minnesota, USA
| | | | - S. John Weroha
- Department of Oncology, Mayo Clinic, Rochester, Minnesota, USA,To whom correspondence should be addressed: Larry M. Karnitz, Department of Oncology, Gonda 19-300, Mayo Clinic, 200 First Street SW, Rochester, MN 55905. Telephone: 507-284-3124; .; S. John Weroha, Department of Oncology, Guggenheim 13-01C, Mayo Clinic, 200 First Street SW, Rochester, MN 55905. Telephone: 507-284-3731; ; Arun Kanakkanthara, Department of Oncology, Gonda 19-300, Mayo Clinic, 200 First Street SW, Rochester, MN 55905. Telephone: 507-266-0268;
| | - Larry M. Karnitz
- Department of Oncology, Mayo Clinic, Rochester, Minnesota, USA,Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, Minnesota, USA,To whom correspondence should be addressed: Larry M. Karnitz, Department of Oncology, Gonda 19-300, Mayo Clinic, 200 First Street SW, Rochester, MN 55905. Telephone: 507-284-3124; .; S. John Weroha, Department of Oncology, Guggenheim 13-01C, Mayo Clinic, 200 First Street SW, Rochester, MN 55905. Telephone: 507-284-3731; ; Arun Kanakkanthara, Department of Oncology, Gonda 19-300, Mayo Clinic, 200 First Street SW, Rochester, MN 55905. Telephone: 507-266-0268;
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Abstract
ABSTRACT Despite representing only 5% of all annual cancer diagnoses in the United States, pancreatic cancer is projected to become the second leading cause of cancer-related death within the next 10 years. Progress in the treatment of advanced pancreatic cancer has been slow. Systemic therapies rely on combination cytotoxic agents, with limited options at progression. Recently, poly(ADP-ribose) polymerase inhibitors have demonstrated clinical activity in patients with advanced pancreatic cancer and pathogenic variants in BRCA1, BRCA2, and PALB2. In this review, we discuss the development of poly(ADP-ribose) polymerase inhibitors in pancreatic cancer, relevant clinical trials, and future directions.
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Affiliation(s)
- Timothy J Brown
- Abramson Cancer Center, The University of Pennsylvania, Philadelphia, PA 19121
| | - Kim A Reiss
- Abramson Cancer Center, The University of Pennsylvania, Philadelphia, PA 19121
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Rivier C, Mery B, Rowinski E, Sotton S, Bouleftour W, Bertoletti L, Tredan O, Magne N. Breast cancer treatment-related cardiovascular disturbances: advocacy for a watchful attitude in this never-ending story. Expert Opin Drug Saf 2021; 21:453-465. [PMID: 34551666 DOI: 10.1080/14740338.2021.1983541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
INTRODUCTION Thanks to the emergence of new therapeutics, prognosis and outcome of breast cancer patients (any subtype) have improved significantly. This raises the issue of the interactions and side effects related to the use of multiple drugs. Thus, to decide on a treatment, the optimal benefit risk-ratio should be carefully watched as toxicities such as cardiac ones effect on long-term survival. Indeed, nowadays in France, cardiovascular diseases rank first as causes of death in women. AREAS COVERED This non-exhaustive review aims to report the currently available data on cardiac side effects caused by the use of emerging drugs in breast cancer, in localized or metastatic diseases alike. We will focus on HER2-inhibitors, cyclin-dependent-kinase 4/6 and PARP inhibitors, chemotherapy and immunotherapy, before discussing the means of prevention. EXPERT OPINION Although this issue has largely been studied, the recent emergence of new drugs emphasizes the necessity for oncologists to adapt their practice to a multidisciplinary model that includes cardio-oncology.
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Affiliation(s)
- Charlène Rivier
- Department of Medical Oncology, Lucien Neuwirth Cancer Centre, Saint Priest En Jarez, France
| | - Benoite Mery
- Department of Medical Oncology, Léon Bérard Cancer Centre, Lyon, France
| | - Elise Rowinski
- Department of Medical Oncology, Lucien Neuwirth Cancer Centre, Saint Priest En Jarez, France
| | - Sandrine Sotton
- Department of Research and Teaching in Oncology, Lucien Neuwirth Cancer Centre, Saint Priest En Jarez, France
| | - Wafa Bouleftour
- Department of Research and Teaching in Oncology, Lucien Neuwirth Cancer Centre, Saint Priest En Jarez, France
| | - Laurent Bertoletti
- Department on Vascular Medicine, Saint-Etienne Teaching Hospital (Chu), Saint-Etienne, France.,INSERM, UMR 1059, Saint-Etienne University, Saint-Etienne, France.,INSER, CIC-1408, Saint-Etienne Teaching Hospital (CHU), Saint-Etienne, France
| | - Olivier Tredan
- Department of Medical Oncology, Léon Bérard Cancer Centre, Lyon, France
| | - Nicolas Magne
- Department of Research and Teaching in Oncology, Lucien Neuwirth Cancer Centre, Saint Priest En Jarez, France.,Department of Radiation Oncology, Lucien Neuwirth Cancer Centre, Saint Priest En Jarez, France
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Kanwal B. Untangling Triple-Negative Breast Cancer Molecular Peculiarity and Chemo-Resistance: Trailing Towards Marker-Based Targeted Therapies. Cureus 2021; 13:e16636. [PMID: 34458041 PMCID: PMC8384383 DOI: 10.7759/cureus.16636] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/25/2021] [Indexed: 12/20/2022] Open
Abstract
Triple-negative breast cancer (TNBC), characterized by the absence of estrogen receptor, progesterone receptor, or human epidermal growth factor receptor-2, affects nearly 15% of women with breast cancer. To date, the mainstay of treatment remains chemotherapy, with all the associated consequences, such as the significant toxicity and the suboptimal effect on the five-year survival rates. RNA-expression profiling showed that TNBC is biologically a heterogeneous malignancy. Therefore, predictive biomarkers matched with the diverse subtypes of TNBC could classify patients that would most benefit from a certain targeted treatment. Three biomarker-driven therapies are currently available: poly-adenosine diphosphate (ADP) ribose polymerase inhibitors for patients with germline BReast CAncer gene (BRCA) mutations, atezolizumab combined with nab-paclitaxel for patients expressing programmed death-ligand 1 (PD-L1) on tumor-infiltrating immune cells, and sacituzumab govitecan, an antibody-drug conjugate targeting human trophoblast cell-surface antigen 2 (TROP-2). Identifying predictive biomarkers is crucial for the optimum generation and implementation of targeted agents for TNBC, while further relevant treatments are in the pipeline given the promising results in clinical trials. Finally, newly developed immunotherapies and other targeted agents should also be investigated in earlier stages of the disease, especially in the neoadjuvant setting, broadening the therapeutic application of such regimens.
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Affiliation(s)
- Bushra Kanwal
- Internal Medicine, Brookdale University Hospital Medical Center, Brooklyn, USA.,Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, D.C., USA
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Zhao S, Fang T, Yao L, Zheng Y, Zhang L, Zhu K. The efficacy and adverse effects of PARP inhibitor combined with chemotherapy compared with chemotherapy alone in the treatment of cancer patient: A protocol for systematic review. Medicine (Baltimore) 2020; 99:e23040. [PMID: 33157956 PMCID: PMC7647544 DOI: 10.1097/md.0000000000023040] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND There search of PARP inhibitors has made great breakthroughs and progress. Become a new type of medicine for cancer treatment,bringing hope to more advanced cancer patients.The purpose of this systematic review is to evaluate the clinical efficacy and adverse effects of PARP inhibitorscombined with chemotherapy and chemotherapy alone in the treatment of cancer patients. METHODS We searched the following 4 databases, including: PubMed, EMBASE, Web of Science, and Cochrane Library. The search will also be conducted at the clinical trial centers: ClinicalTrials.gov, ISRCTN Registry, WHO International Clinical Trials Registration Platform. The search date is as of September 22, 2020. There is no language restriction during this search, and the latest documents are kept updated through settings. The subject search terms were identified as "PARP Inhibitor", "Neoplasms" and "Dug therapy". The Phase 2 and Phase 3 clinical trials comparing PARP inhibitor combined with chemotherapy and chemotherapy alone were included. The results include overall survival (OS), progression-free survival (PFS), objective response rate (ORR) and adverse events. Two researchers separately completed the article inclusion, data extraction and quality evaluation of this study. The assessment of the risk of bias and data will be conducted using Review Manager. ETHICS AND DISSEMINATION All articles are published and do not require the approval of the ethics committee and the signed informed consent form. The results of this systematic review will be published through peer-reviewed publications. REGISTERED Registered on INPLASY and the registration number is INPLASY202090087.
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Affiliation(s)
- Suyue Zhao
- The First Clinical Medical College of Lanzhou University
| | - Tao Fang
- The First Clinical Medical College of Lanzhou University
| | - Li Yao
- The First Clinical Medical College of Lanzhou University
| | - Ying Zheng
- The First Clinical Medical College of Lanzhou University
| | - Ling Zhang
- The First Clinical Medical College of Lanzhou University
| | - Kexiang Zhu
- The First Hospital of Lanzhou University, China
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10
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Yap TA, Kristeleit R, Michalarea V, Pettitt SJ, Lim JSJ, Carreira S, Roda D, Miller R, Riisnaes R, Miranda S, Figueiredo I, Rodrigues DN, Ward S, Matthews R, Parmar M, Turner A, Tunariu N, Chopra N, Gevensleben H, Turner NC, Ruddle R, Raynaud FI, Decordova S, Swales KE, Finneran L, Hall E, Rugman P, Lindemann JPO, Foxley A, Lord CJ, Banerji U, Plummer R, Basu B, Lopez JS, Drew Y, de Bono JS. Phase I Trial of the PARP Inhibitor Olaparib and AKT Inhibitor Capivasertib in Patients with BRCA1/2- and Non- BRCA1/2-Mutant Cancers. Cancer Discov 2020; 10:1528-1543. [PMID: 32532747 PMCID: PMC7611385 DOI: 10.1158/2159-8290.cd-20-0163] [Citation(s) in RCA: 75] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2020] [Revised: 05/20/2020] [Accepted: 06/09/2020] [Indexed: 11/16/2022]
Abstract
Preclinical studies have demonstrated synergy between PARP and PI3K/AKT pathway inhibitors in BRCA1 and BRCA2 (BRCA1/2)-deficient and BRCA1/2-proficient tumors. We conducted an investigator-initiated phase I trial utilizing a prospective intrapatient dose- escalation design to assess two schedules of capivasertib (AKT inhibitor) with olaparib (PARP inhibitor) in 64 patients with advanced solid tumors. Dose expansions enrolled germline BRCA1/2-mutant tumors, or BRCA1/2 wild-type cancers harboring somatic DNA damage response (DDR) or PI3K-AKT pathway alterations. The combination was well tolerated. Recommended phase II doses for the two schedules were: olaparib 300 mg twice a day with either capivasertib 400 mg twice a day 4 days on, 3 days off, or capivasertib 640 mg twice a day 2 days on, 5 days off. Pharmacokinetics were dose proportional. Pharmacodynamic studies confirmed phosphorylated (p) GSK3β suppression, increased pERK, and decreased BRCA1 expression. Twenty-five (44.6%) of 56 evaluable patients achieved clinical benefit (RECIST complete response/partial response or stable disease ≥ 4 months), including patients with tumors harboring germline BRCA1/2 mutations and BRCA1/2 wild-type cancers with or without DDR and PI3K-AKT pathway alterations. SIGNIFICANCE: In the first trial to combine PARP and AKT inhibitors, a prospective intrapatient dose- escalation design demonstrated safety, tolerability, and pharmacokinetic-pharmacodynamic activity and assessed predictive biomarkers of response/resistance. Antitumor activity was observed in patients harboring tumors with germline BRCA1/2 mutations and BRCA1/2 wild-type cancers with or without somatic DDR and/or PI3K-AKT pathway alterations.This article is highlighted in the In This Issue feature, p. 1426.
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Affiliation(s)
- Timothy A Yap
- Royal Marsden Hospital, London, United Kingdom.
- The Institute of Cancer Research, London, United Kingdom
| | | | | | - Stephen J Pettitt
- The Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, London, United Kingdom
- The CRUK Gene Function Laboratory, The Institute of Cancer Research, London, United Kingdom
| | | | | | - Desamparados Roda
- Royal Marsden Hospital, London, United Kingdom
- The Institute of Cancer Research, London, United Kingdom
| | - Rowan Miller
- University College London, London, United Kingdom
| | - Ruth Riisnaes
- The Institute of Cancer Research, London, United Kingdom
| | - Susana Miranda
- The Institute of Cancer Research, London, United Kingdom
| | | | | | - Sarah Ward
- Royal Marsden Hospital, London, United Kingdom
- The Institute of Cancer Research, London, United Kingdom
| | - Ruth Matthews
- Royal Marsden Hospital, London, United Kingdom
- The Institute of Cancer Research, London, United Kingdom
| | - Mona Parmar
- Royal Marsden Hospital, London, United Kingdom
- The Institute of Cancer Research, London, United Kingdom
| | - Alison Turner
- Royal Marsden Hospital, London, United Kingdom
- The Institute of Cancer Research, London, United Kingdom
| | | | - Neha Chopra
- Royal Marsden Hospital, London, United Kingdom
- The Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, London, United Kingdom
| | | | - Nicholas C Turner
- Royal Marsden Hospital, London, United Kingdom
- The Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, London, United Kingdom
| | - Ruth Ruddle
- The Institute of Cancer Research, London, United Kingdom
| | | | | | - Karen E Swales
- The Institute of Cancer Research, London, United Kingdom
| | - Laura Finneran
- The Institute of Cancer Research, London, United Kingdom
| | - Emma Hall
- The Institute of Cancer Research, London, United Kingdom
| | - Paul Rugman
- Oncology R&D, AstraZeneca, Cambridge, United Kingdom
| | | | - Andrew Foxley
- Oncology R&D, AstraZeneca, Cambridge, United Kingdom
| | - Christopher J Lord
- The Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, London, United Kingdom
- The CRUK Gene Function Laboratory, The Institute of Cancer Research, London, United Kingdom
| | - Udai Banerji
- Royal Marsden Hospital, London, United Kingdom
- The Institute of Cancer Research, London, United Kingdom
| | - Ruth Plummer
- Clinical and Translational Research Institute, Newcastle University, Newcastle, United Kingdom
| | - Bristi Basu
- Department of Oncology, University of Cambridge, Cambridge, United Kingdom
| | - Juanita S Lopez
- Royal Marsden Hospital, London, United Kingdom
- The Institute of Cancer Research, London, United Kingdom
| | - Yvette Drew
- Clinical and Translational Research Institute, Newcastle University, Newcastle, United Kingdom
| | - Johann S de Bono
- Royal Marsden Hospital, London, United Kingdom
- The Institute of Cancer Research, London, United Kingdom
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11
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Beaver JA, Coleman RL, Arend RC, Armstrong DK, Bala S, Mills GB, Sood AK, Herzog TJ. Advancing Drug Development in Gynecologic Malignancies. Clin Cancer Res 2019; 25:4874-4880. [PMID: 31126961 PMCID: PMC6697564 DOI: 10.1158/1078-0432.ccr-19-0619] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Revised: 04/18/2019] [Accepted: 05/21/2019] [Indexed: 12/20/2022]
Abstract
Gynecologic malignancies continue to be a major cause of morbidity and mortality in the United States despite recent advances in oncologic therapies. To realize the promise of immunotherapy and biomarker-driven approaches to improve clinical outcomes for patients, better communication among stakeholders in the drug development and approval pathways is needed. To this end, the FDA-AACR-SGO Drug Development in Gynecologic Malignancies Workshop brought together clinicians, patient advocates, researchers, industry representatives, and regulators in June 2018, to review the state of the science in gynecologic cancers and explore how scientific advances impact approval processes. Topics of discussion and key takeaways are summarized in this Perspectives in Regulatory Science and Policy article. Single-agent immunotherapies have demonstrated variable and often modest response rates among gynecologic cancers. Combination therapies and other novel approaches, such as cell-based therapies, may show improved efficacy compared with single-agent immunotherapies; however, utilizing innovative clinical trial designs will be necessary to progress further. Companion and complementary diagnostics inform physicians of potential benefits of specific therapeutics for patients; however, they serve different functions that have important regulatory implications, thus trialists should understand the distinctions between diagnostic types. PARP inhibitors hold great promise for treating ovarian cancers, both as monotherapies and in combination with chemotherapeutics, other targeted agents, and immunotherapies. Rare gynecologic cancers often exhibit unique molecular characteristics that can serve as effective targets to which novel therapeutics can be developed. This workshop highlighted the importance of future open discussions on scientific and regulatory challenges in drug development for gynecologic malignancies.
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Affiliation(s)
- Julia A Beaver
- FDA Center for Drug Evaluation and Research, Silver Spring, Maryland
| | - Robert L Coleman
- Department of Gynecologic Oncology and Reproductive Medicine, University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Rebecca C Arend
- Department of Obstetrics and Gynecology, University of Alabama at Birmingham School of Medicine, Birmingham, Alabama
| | - Deborah K Armstrong
- Johns Hopkins Sidney Kimmel Comprehensive Cancer Center, Baltimore, Maryland
| | - Sanjeeve Bala
- FDA Center for Drug Evaluation and Research, Silver Spring, Maryland
| | - Gordon B Mills
- Knight Cancer Institute, Oregon Health & Science University, Portland, Oregon
| | - Anil K Sood
- Departments of Gynecologic Oncology and Cell Biology, University of Texas MD Anderson Cancer Center, Houston Texas
| | - Thomas J Herzog
- University of Cincinnati Cancer Institute, Cincinnati, Ohio.
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12
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Abstract
OBJECTIVE To review recent therapies approved by the US Food and Drug Administration for the treatment of gynecologic malignancies. DATA SOURCES PubMed, FDA.gov, ASCO.org. CONCLUSION The landscape for treating gynecologic malignancies is rapidly changing. Maintenance therapy now exists for women with advanced ovarian cancer after completing chemotherapy for both newly diagnosed and platinum-sensitive recurrent ovarian cancer. Anti-angiogenic therapy has many applications in gynecologic malignancies. Immunotherapy can be used in certain situations for women with gynecologic malignancies. IMPLICATIONS FOR NURSING PRACTICE Biologic agents and immunotherapy have distinct side-effect profiles that nurses need to be aware of to optimize patient care and outcomes.
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13
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da Cunha Colombo Bonadio RR, Fogace RN, Miranda VC, Diz MDPE. Homologous recombination deficiency in ovarian cancer: a review of its epidemiology and management. Clinics (Sao Paulo) 2018; 73:e450s. [PMID: 30133561 PMCID: PMC6096977 DOI: 10.6061/clinics/2018/e450s] [Citation(s) in RCA: 79] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/11/2017] [Accepted: 02/05/2018] [Indexed: 11/28/2022] Open
Abstract
Ovarian cancer patients with homologous recombination deficiencies exhibit specific clinical behaviors, and improved responses to treatments, such as platinum-based chemotherapy and poly (ADP-ribose) polymerase (PARP) inhibitors, have been observed. Germline mutations in the BRCA 1/2 genes are the most well-known mechanisms of homologous recombination deficiency. However, other mechanisms, such as germline and somatic mutations in other homologous recombination genes and epigenetic modifications, have also been implicated in homologous recombination deficiency. The epidemiology and implications of these other mechanisms need to be better understood to improve the treatment strategies for these patients. Furthermore, an evaluation of various diagnostic tests to investigate homologous recombination deficiency is essential. Comprehension of the role of homologous recombination deficiency in ovarian cancer also allows the development of therapeutic combinations that can improve the efficacy of treatment. In this review, we discuss the epidemiology and management of homologous recombination deficiency in ovarian cancer patients.
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Affiliation(s)
- Renata Rodrigues da Cunha Colombo Bonadio
- Instituto do Cancer do Estado de Sao Paulo (ICESP), Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP, BR
- *Corresponding author. E-mail:
| | - Rodrigo Nogueira Fogace
- Instituto do Cancer do Estado de Sao Paulo (ICESP), Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP, BR
| | - Vanessa Costa Miranda
- Instituto do Cancer do Estado de Sao Paulo (ICESP), Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP, BR
| | - Maria del Pilar Estevez Diz
- Instituto do Cancer do Estado de Sao Paulo (ICESP), Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP, BR
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14
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Arora E, Masab M, Jindal V, Riaz I, Gupta S, Varadi G. Role of Poly Adenosine Diphosphate Ribose Polymerase Inhibitors in Advanced Stage Ovarian Cancer. Cureus 2018; 10:e2685. [PMID: 30050740 PMCID: PMC6059530 DOI: 10.7759/cureus.2685] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Ovarian cancer is one of the leading causes of death from gynecologic cancers. In this present era of cancer treatment, therapeutic options for patients with advanced or recurrent ovarian cancer are limited. The present standard of care treatment for advanced ovarian cancer is a platinum-based doublet chemotherapy (paclitaxel and carboplatin with or without bevacizumab) after a maximum attempt of surgical cytoreduction. However, there are no promising options for the management of patients with ovarian cancer refractory to the platinum-based chemotherapy. Therefore, newer, safe, and more effective treatment modalities are required for patients with advanced or recurrent ovarian cancer. Poly(adenosine diphosphate [ADP]-ribose) polymerase (PARP) inhibitors have shown an impressive safety profile and anti-tumor efficacy in patients with breast cancer 1 and 2 (BRCA1 and BRCA2) gene-mutated ovarian cancer who were previously treated with the standard of care chemotherapy. We have done a detailed review of the literature to emphasize the role of PARP inhibitors in the treatment of advanced or relapsed ovarian cancer.
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Affiliation(s)
- Ena Arora
- Obstetrics and Gynecology, Civil Hospital Chandigarh, Chandigarh, IND
| | - Muhammad Masab
- Internal Medicine, Albert Einstein Medical Center, New York, USA
| | - Vishal Jindal
- Internal Medicine, St. Vincent Hospital Worcester, Worcester, USA
| | - Iqra Riaz
- Department of Medicine, Mayo Hospital, King Edward Medical University, Lahore, Pakistan
| | - Sorab Gupta
- Hematology and Oncology, Albert Einstein Medical Center, New York, USA
| | - Gabor Varadi
- Hematology and Oncology, Albert Einstein Medical Center, New York, USA
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15
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Wahner Hendrickson AE, Menefee ME, Hartmann LC, Long HJ, Northfelt DW, Reid JM, Boakye-Agyeman F, Kayode O, Flatten KS, Harrell MI, Swisher EM, Poirier GG, Satele D, Allred J, Lensing JL, Chen A, Ji J, Zang Y, Erlichman C, Haluska P, Kaufmann SH. A Phase I Clinical Trial of the Poly(ADP-ribose) Polymerase Inhibitor Veliparib and Weekly Topotecan in Patients with Solid Tumors. Clin Cancer Res 2018; 24:744-752. [PMID: 29138343 PMCID: PMC7580251 DOI: 10.1158/1078-0432.ccr-17-1590] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2017] [Revised: 10/03/2017] [Accepted: 11/08/2017] [Indexed: 12/27/2022]
Abstract
Purpose: To determine the dose limiting toxicities (DLT), maximum tolerated dose (MTD), and recommended phase II dose (RP2D) of veliparib in combination with weekly topotecan in patients with solid tumors. Correlative studies were included to assess the impact of topotecan and veliparib on poly(ADP-ribose) levels in peripheral blood mononuclear cells, serum pharmacokinetics of both agents, and potential association of germline repair gene mutations with outcome.Experimental Design: Eligible patients had metastatic nonhematologic malignancies with measurable disease. Using a 3 + 3 design, patients were treated with veliparib orally twice daily on days 1-3, 8-10, and 15-17 and topotecan intravenously on days 2, 9, and 16 every 28 days. Tumor responses were assessed by RECIST.Results: Of 58 patients enrolled, 51 were evaluable for the primary endpoint. The MTD and RP2D was veliparib 300 mg twice daily on days 1-3, 8-10, and 15-17 along with topotecan 3 mg/m2 on days 2, 9, and 16 of a 28-day cycle. DLTs were grade 4 neutropenia lasting >5 days. The median number of cycles was 2 (1-26). The objective response rate was 10%, with 1 complete and 4 partial responses. Twenty-two patients (42%) had stable disease ranging from 4 to 26 cycles. Patients with germline BRCA1, BRCA2, or RAD51D mutations remained on study longer than those without homologous recombination repair (HRR) gene mutations (median 4 vs. 2 cycles).Conclusions: Weekly topotecan in combination with veliparib has a manageable safety profile and appears to warrant further investigation. Clin Cancer Res; 24(4); 744-52. ©2017 AACR.
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16
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Moiseyenko VM, Chubenko VA, Moiseyenko FV, Zagorskaya LA, Zaytseva YA, Gesha NE, Zykov EN, Ni VI, Preobrazhenskaya EV, Sokolenko AP, Imyanitov EN. "Lazarus Response" to Olaparib in a Virtually Chemonaive Breast Cancer Patient Carrying Gross BRCA2 Gene Deletion. Cureus 2018; 10:e2150. [PMID: 29651367 PMCID: PMC5890964 DOI: 10.7759/cureus.2150] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
This report describes an estrogen receptor-positive breast cancer patient, who relapsed at two and a half years after the completion of adjuvant chemotherapy while being on the aromatase inhibition. Based on the clinical evidence for potential sensitivity of the tumor to hormone ablation, everolimus was added to continuing exemestane treatment. Oral chemotherapy was administered at further disease progression, however, it lasted only for 10 days due to rapidly deteriorating condition of the patient. BRCA test was performed just before the failure of endocrine therapy and revealed a gross deletion within BRCA2 gene. Since the patient already developed contraindications to the standard chemotherapy, olaparib (300 mg twice a day) was given as a last hope option. The patient demonstrated a “Lazarus response”: the performance status and the results of the biochemical tests went back to the norm within first two weeks of treatment. Positron emission tomography-computed tomography (PET-CT) was performed at one month after the start of olaparib therapy, and revealed complete metabolic response for all multiple metastatic lesions located in the liver, bones, small pelvis, lungs, mediastinum, retroperitoneum, etc. Cytotoxic therapy and poly ADP-ribose polymerase (PARP) inhibitors are known to have virtually identical mechanisms of tumor escape from the treatment, which are confined to the restoration of BRCA proficiency within cancer cells. The pronounced tumor response to the treatment in this patient can be attributed to the lack of recent exposure to standard cytotoxic treatment as well as to the inability of tumors with gross BRCA rearrangements to restore BRCA function via secondary mutation. This observation calls for comprehensive evaluation of PARP inhibitors in chemonaive patients with hereditary cancer.
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Affiliation(s)
| | | | | | | | | | - Nataliya E Gesha
- Department of Chemotherapy, City Cancer Center, Saint Petersburg
| | - Evgeny N Zykov
- Laboratory of Nuclear Diagnostics, City Cancer Center, Saint Petersburg
| | - Valeriya I Ni
- Department of Tumor Growth Biology, N.N. Petrov Institute of Oncology, Saint Petersburg
| | | | - Anna P Sokolenko
- Department of Tumor Growth Biology, N.N. Petrov Institute of Oncology, Saint Petersburg
| | - Evgeny N Imyanitov
- Department of Tumor Growth Biology, N.N. Petrov Institute of Oncology, Saint Petersburg
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17
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Naidoo K, Wai PT, Maguire SL, Daley F, Haider S, Kriplani D, Campbell J, Mirza H, Grigoriadis A, Tutt A, Moseley PM, Abdel-Fatah TMA, Chan SYT, Madhusudan S, Rhaka EA, Ellis IO, Lord CJ, Yuan Y, Green AR, Natrajan R. Evaluation of CDK12 Protein Expression as a Potential Novel Biomarker for DNA Damage Response-Targeted Therapies in Breast Cancer. Mol Cancer Ther 2018; 17:306-315. [PMID: 29133620 PMCID: PMC6284786 DOI: 10.1158/1535-7163.mct-17-0760] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Revised: 09/19/2017] [Accepted: 10/19/2017] [Indexed: 12/20/2022]
Abstract
Disruption of Cyclin-Dependent Kinase 12 (CDK12) is known to lead to defects in DNA repair and sensitivity to platinum salts and PARP1/2 inhibitors. However, CDK12 has also been proposed as an oncogene in breast cancer. We therefore aimed to assess the frequency and distribution of CDK12 protein expression by IHC in independent cohorts of breast cancer and correlate this with outcome and genomic status. We found that 21% of primary unselected breast cancers were CDK12 high, and 10.5% were absent, by IHC. CDK12 positivity correlated with HER2 positivity but was not an independent predictor of breast cancer-specific survival taking HER2 status into account; however, absent CDK12 protein expression significantly correlated with a triple-negative phenotype. Interestingly, CDK12 protein absence was associated with reduced expression of a number of DDR proteins including ATR, Ku70/Ku80, PARP1, DNA-PK, and γH2AX, suggesting a novel mechanism of CDK12-associated DDR dysregulation in breast cancer. Our data suggest that diagnostic IHC quantification of CDK12 in breast cancer is feasible, with CDK12 absence possibly signifying defective DDR function. This may have important therapeutic implications, particularly for triple-negative breast cancers. Mol Cancer Ther; 17(1); 306-15. ©2017 AACR.
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Affiliation(s)
- Kalnisha Naidoo
- The Breast Cancer Now Research Centre, The Institute of Cancer Research, London, United Kingdom
| | - Patty T Wai
- The Breast Cancer Now Research Centre, The Institute of Cancer Research, London, United Kingdom
- Division of Molecular Pathology, Centre for Evolution and Cancer and Centre for Molecular Pathology, The Institute of Cancer Research, London, United Kingdom
| | - Sarah L Maguire
- The Breast Cancer Now Research Centre, The Institute of Cancer Research, London, United Kingdom
| | - Frances Daley
- The Breast Cancer Now Research Centre, The Institute of Cancer Research, London, United Kingdom
| | - Syed Haider
- The Breast Cancer Now Research Centre, The Institute of Cancer Research, London, United Kingdom
| | - Divya Kriplani
- The Breast Cancer Now Research Centre, The Institute of Cancer Research, London, United Kingdom
| | - James Campbell
- The Breast Cancer Now Research Centre, The Institute of Cancer Research, London, United Kingdom
- The CRUK Gene Function Laboratory, The Institute of Cancer Research, London, United Kingdom
| | - Hasan Mirza
- Cancer Bioinformatics, Cancer Division, King's College London, London, United Kingdom
| | - Anita Grigoriadis
- Cancer Bioinformatics, Cancer Division, King's College London, London, United Kingdom
| | - Andrew Tutt
- The Breast Cancer Now Research Centre, The Institute of Cancer Research, London, United Kingdom
- Breast Cancer Now Research Unit, King's College London, London, United Kingdom
| | - Paul M Moseley
- Clinical Oncology, The University of Nottingham and Nottingham University Hospitals NHS Trust, Nottingham City Hospital, Nottingham, United Kingdom
| | - Tarek M A Abdel-Fatah
- Clinical Oncology, The University of Nottingham and Nottingham University Hospitals NHS Trust, Nottingham City Hospital, Nottingham, United Kingdom
| | - Stephen Y T Chan
- Clinical Oncology, The University of Nottingham and Nottingham University Hospitals NHS Trust, Nottingham City Hospital, Nottingham, United Kingdom
| | - Srinivasan Madhusudan
- Department of Histopathology and Division of Cancer & Stem Cells, School of Medicine, The University of Nottingham and Nottingham University Hospitals NHS Trust, Nottingham City Hospital, Nottingham, United Kingdom
| | - Emad A Rhaka
- Department of Histopathology and Division of Cancer & Stem Cells, School of Medicine, The University of Nottingham and Nottingham University Hospitals NHS Trust, Nottingham City Hospital, Nottingham, United Kingdom
| | - Ian O Ellis
- Department of Histopathology and Division of Cancer & Stem Cells, School of Medicine, The University of Nottingham and Nottingham University Hospitals NHS Trust, Nottingham City Hospital, Nottingham, United Kingdom
| | - Christopher J Lord
- The Breast Cancer Now Research Centre, The Institute of Cancer Research, London, United Kingdom
- The CRUK Gene Function Laboratory, The Institute of Cancer Research, London, United Kingdom
| | - Yinyin Yuan
- Division of Molecular Pathology, Centre for Evolution and Cancer and Centre for Molecular Pathology, The Institute of Cancer Research, London, United Kingdom
| | - Andrew R Green
- Department of Histopathology and Division of Cancer & Stem Cells, School of Medicine, The University of Nottingham and Nottingham University Hospitals NHS Trust, Nottingham City Hospital, Nottingham, United Kingdom
| | - Rachael Natrajan
- The Breast Cancer Now Research Centre, The Institute of Cancer Research, London, United Kingdom.
- Division of Molecular Pathology, Centre for Evolution and Cancer and Centre for Molecular Pathology, The Institute of Cancer Research, London, United Kingdom
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18
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McMahon M, Frangova TG, Henderson CJ, Wolf CR. Olaparib, Monotherapy or with Ionizing Radiation, Exacerbates DNA Damage in Normal Tissues: Insights from a New p21 Reporter Mouse. Mol Cancer Res 2016; 14:1195-1203. [PMID: 27604276 PMCID: PMC5136472 DOI: 10.1158/1541-7786.mcr-16-0108] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Revised: 08/01/2016] [Accepted: 08/16/2016] [Indexed: 11/16/2022]
Abstract
Many drugs targeting the DNA damage response are being developed as anticancer therapies, either as single agents or in combination with ionizing radiation (IR) or other cytotoxic agents. Numerous clinical trials in this area are either in progress or planned. However, concerns remain about the potential of such treatments to increase toxicity to normal tissues. In order to address this issue, a novel reporter mouse line was created through the simultaneous incorporation of multiple reporters, β-galactosidase, and firefly luciferase, into the DNA damage-inducible p21 (CDKN1A) locus. The data demonstrate that in situ β-galactosidase staining facilitates high fidelity mapping of p21 expression across multiple organs and tissues at single-cell resolution, whereas the luciferase reporter permits noninvasive bioluminescent imaging of p21 expression. This model was used to determine the capacity of a number of DNA-damaging agents, including IR, cisplatin, and etoposide to induce p21 expression in normal tissues. In addition, the PARP inhibitor olaparib was examined alone or in combination with IR as well as cisplatin. A single exposure to olaparib alone caused DNA damage to cells in the mucosal layer lining mouse large intestine. It also exacerbated DNA damage induced in this organ and the kidney by coadministered IR. These studies suggest that olaparib has carcinogenic potential and illustrate the power of this new model to evaluate the safety of new therapeutic regimens involving combination therapies. IMPLICATIONS Olaparib causes DNA damage to normal tissues and might be a carcinogen. Mol Cancer Res; 14(12); 1195-203. ©2016 AACR.
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Affiliation(s)
- Michael McMahon
- University of Dundee, School of Medicine, Ninewells Hospital and Medical School, Dundee DD1 9SY, United Kingdom
| | - Tania G Frangova
- University of Dundee, School of Medicine, Ninewells Hospital and Medical School, Dundee DD1 9SY, United Kingdom
| | - Colin J Henderson
- University of Dundee, School of Medicine, Ninewells Hospital and Medical School, Dundee DD1 9SY, United Kingdom
| | - C Roland Wolf
- University of Dundee, School of Medicine, Ninewells Hospital and Medical School, Dundee DD1 9SY, United Kingdom.
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19
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Abstract
PURPOSE OF REVIEW A number of molecular and genomic biomarkers that possess the ability to guide treatment or 'actionable targets' are being reported in metastatic prostate cancer. In addition, pathways of resistance to existing therapies and novel agents to overcome them are currently under active investigation. The next wave of investigations is focused on personalized therapy of prostate cancer. The focus of this review article is to provide an update on clinical development in advanced prostate cancer and to highlight the ongoing investigations of biomarker discovery, and ways of overcoming therapeutic resistance. The next generation of clinical trials developing novel targets and compounds promises to be in populations enriched with specific marker expression. RECENT FINDINGS The breakthrough report, of the ability of the androgen receptor variant 7 mutation, detected in circulating tumor cells, to predict the lack of response to abiraterone or enzalutamide, and the remarkable responses of poly adenosine diphosphate ribose polymerase inhibitors in prostate cancer with DNA repair mutations have elevated hopes of a bright future in the biomarker-driven therapeutic arena. Novel targets such as bromodomain extra terminal-1 and phosphatidylinositol 3-kinase hold promise for the possibility of overcoming resistance. Novel hormone agents are also under active study. SUMMARY As the clinical application of the multifaceted therapies narrows down to enriched patient populations selected by genomic testing, the therapeutic efficiency will escalate considerably. Novel targets, resistance mechanisms and relevant agents are being avidly tested, and the dream of personalized medicine is emerging into reality.
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Affiliation(s)
- Manish K Thakur
- Karmanos Cancer Institute, Department of Oncology, Wayne State University, Detroit, Michigan, USA
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20
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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21
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Abstract
Poly(ADP-ribose) polymerases (PARP) are enzymes involved in DNA-damage repair. Inhibition of PARPs is a promising strategy for targeting cancers with defective DNA-damage repair, including BRCA1 and BRCA2 mutation-associated breast and ovarian cancers. Several PARP inhibitors are currently in trials in the adjuvant, neoadjuvant, and metastatic settings for the treatment of ovarian, BRCA-mutated breast, and other cancers. We herein review the development of PARP inhibitors and the basis for the excitement surrounding these agents, their use as single agents and in combinations, as well as their toxicities, mechanisms of acquired resistance, and companion diagnostics.
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Affiliation(s)
- Luca Livraghi
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, 02215, USA.
| | - Judy E Garber
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, 02215, USA.
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22
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Abstract
PURPOSE OF REVIEW Multiple agents with very distinct mechanisms of actions and unique toxicities and efficacies have become available for use in advanced prostate cancer. The next wave of investigations is focused on the development of combinations and optimal sequences of the currently available agents. The focus of this article is to provide an update on clinical developments in advanced prostate cancer occurring within the past year and to highlight the ongoing investigations of promising novel targets and compounds. RECENT FINDINGS The clinical use of enzalutamide prior to chemotherapy demonstrated improvement in progression-free survival and overall survival as compared with placebo in metastatic castrate resistant prostate cancer. This report of the Enzalutamide in men with chemotherapy-naive metastatic prostate cancer (PREVAIL) trial led to the Food and Drug Administration approval of this agent. Novel agents such as cabozantinib and custirsen that had shown promising results in phase II trials revealed disappointing results in the phase III setting. The breakthrough report, of the ability of the androgen receptor splice variant mutation, detected in circulating tumor cells, to predict lack of response to abiraterone or enzalutamide, and the remarkable responses of poly(ADP-ribose) polymerase inhibitors in prostate cancer with breast cancer genes 1 and 2 (BRCA1/2) mutations, have elevated hopes of a bright future in the biomarker-driven therapeutic arena. SUMMARY As the clinical application of the recently approved multifaceted therapies widens, trials addressing optimal sequences and combinations are gaining importance. In addition, exploring the utility of therapies in the hormone naive or nonmetastatic settings is an area of active investigation. Early use of available agents, optimal sequencing and aid of biomarkers to guide therapeutic choices will make the achievement of lifetime remissions in advanced prostate cancer a reachable goal.
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Affiliation(s)
- Ulka N Vaishampayan
- aKarmanos Cancer Institute bDepartment of Oncology, Wayne State University, Detroit, Michigan, USA
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23
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Tobin LA, Robert C, Rapoport AP, Gojo I, Baer MR, Tomkinson AE, Rassool FV. Targeting abnormal DNA double-strand break repair in tyrosine kinase inhibitor-resistant chronic myeloid leukemias. Oncogene 2013; 32:1784-93. [PMID: 22641215 PMCID: PMC3752989 DOI: 10.1038/onc.2012.203] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2011] [Revised: 03/23/2012] [Accepted: 04/23/2012] [Indexed: 11/08/2022]
Abstract
Resistance to imatinib (IM) and other tyrosine kinase inhibitors (TKI)s is an increasing problem in leukemias caused by expression of BCR-ABL1. As chronic myeloid leukemia (CML) cell lines expressing BCR-ABL1 utilize an alternative non-homologous end-joining pathway (ALT NHEJ) to repair DNA double-strand breaks (DSB)s, we asked whether this repair pathway is a novel therapeutic target in TKI-resistant disease. Notably, the steady state levels of two ALT NHEJ proteins, poly-(ADP-ribose) polymerase 1 (PARP1) and DNA ligase IIIα, were increased in the BCR-ABL1-positive CML cell line K562 and, to a greater extent, in its imatinib-resistant (IMR) derivative. Incubation of these cell lines with a combination of DNA ligase and PARP inhibitors inhibited ALT NHEJ and selectively decreased survival with the effect being greater in the IMR derivative. Similar results were obtained with TKI-resistant derivatives of two hematopoietic cell lines that had been engineered to stably express BCR-ABL1. Together our results show that the sensitivity of cell lines expressing BCR-ABL1 to the combination of DNA ligase and PARP inhibitors correlates with the steady state levels of PARP1 and DNA ligase IIIα, and ALT NHEJ activity. Importantly, analysis of clinical samples from CML patients confirmed that the expression levels of PARP1 and DNA ligase IIIα correlated with the sensitivity to the DNA repair inhibitor combination. Thus, the expression levels of PARP1 and DNA ligase IIIα serve as biomarkers to identify a subgroup of CML patients who may be candidates for therapies that target the ALT NHEJ pathway when treatment with TKIs has failed.
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MESH Headings
- Antineoplastic Combined Chemotherapy Protocols
- Apoptosis/drug effects
- Benzamides/pharmacology
- Blotting, Western
- Cell Proliferation/drug effects
- Comparative Genomic Hybridization
- DNA Breaks, Double-Stranded/drug effects
- DNA End-Joining Repair/drug effects
- DNA Ligase ATP
- DNA Ligases/antagonists & inhibitors
- DNA Ligases/genetics
- DNA Ligases/metabolism
- Drug Resistance, Neoplasm/drug effects
- Enzyme Inhibitors/pharmacology
- Fluorescent Antibody Technique
- Fusion Proteins, bcr-abl/metabolism
- Humans
- Imatinib Mesylate
- Immunoenzyme Techniques
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/drug therapy
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/genetics
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/pathology
- Piperazines/pharmacology
- Poly (ADP-Ribose) Polymerase-1
- Poly(ADP-ribose) Polymerase Inhibitors
- Poly(ADP-ribose) Polymerases/genetics
- Poly(ADP-ribose) Polymerases/metabolism
- Poly-ADP-Ribose Binding Proteins
- Protein Kinase Inhibitors/pharmacology
- Pyrimidines/pharmacology
- RNA, Messenger/genetics
- RNA, Small Interfering/genetics
- Real-Time Polymerase Chain Reaction
- Reverse Transcriptase Polymerase Chain Reaction
- Tumor Cells, Cultured
- Xenopus Proteins
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Affiliation(s)
- Lisa A. Tobin
- Department of Radiation Oncology, Marlene and Stewart Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore, MD 21201
| | - Carine Robert
- Department of Radiation Oncology, Marlene and Stewart Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore, MD 21201
| | - Aaron P. Rapoport
- Department of Medicine, Marlene and Stewart Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore, MD 21201
| | - Ivana Gojo
- Department of Medicine, Marlene and Stewart Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore, MD 21201
| | - Maria R. Baer
- Department of Medicine, Marlene and Stewart Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore, MD 21201
| | - Alan E. Tomkinson
- Department of Internal Medicine and University of New Mexico Cancer Center, University of New Mexico, Albuquerque, NM
| | - Feyruz V. Rassool
- Department of Radiation Oncology, Marlene and Stewart Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore, MD 21201
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Nowsheen S, Cooper T, Bonner JA, LoBuglio AF, Yang ES. HER2 overexpression renders human breast cancers sensitive to PARP inhibition independently of any defect in homologous recombination DNA repair. Cancer Res 2012; 72:4796-806. [PMID: 22987487 PMCID: PMC3458582 DOI: 10.1158/0008-5472.can-12-1287] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
HER2 overexpression in breast cancer confers increased tumor aggressiveness. Although anti-HER2 therapies have improved patient outcome, resistance ultimately occurs. PARP inhibitors target homologous recombination (HR)-deficient tumors, such as the BRCA-associated breast and ovarian cancers. In this study, we show that HER2+ breast cancers are susceptible to PARP inhibition independent of an HR deficiency. HER2 overexpression in HER2 negative breast cancer cells was sufficient to render cells susceptible to the PARP inhibitors ABT-888 and AZD-2281 both in vitro and in vivo, which was abrogated by HER2 reduction. In addition, ABT-888 significantly inhibited NF-κB (p65/RelA) transcriptional activity in HER2+ but not HER2 negative breast cancer cells. This corresponded with a reduction in phosphorylated p65 and total IKKα levels, with a concomitant increase in IκBα. Overexpression of p65 abrogated cellular sensitivity to ABT-888, whereas IκBα overexpression reduced cell viability to a similar extent as ABT-888. Therefore, susceptibility of HER2+ breast cancer cells to PARP inhibition may be because of inhibition of NF-κB signaling driven by HER2. Our findings indicate that PARP inhibitors may be a novel therapeutic strategy for sporadic HER2+ breast cancer patients.
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Affiliation(s)
- Somaira Nowsheen
- Department of Radiation Oncology, Comprehensive Cancer Center, University of Alabama at Birmingham School of Medicine
| | - Tiffiny Cooper
- Department of Radiation Oncology, Comprehensive Cancer Center, University of Alabama at Birmingham School of Medicine
| | - James A. Bonner
- Department of Radiation Oncology, Comprehensive Cancer Center, University of Alabama at Birmingham School of Medicine
| | - Albert F. LoBuglio
- Department of Hematology/Oncology, Comprehensive Cancer Center, University of Alabama at Birmingham School of Medicine
| | - Eddy S. Yang
- Department of Radiation Oncology, Comprehensive Cancer Center, University of Alabama at Birmingham School of Medicine
- Department of Cell, Developmental, and Integrative Biology, Comprehensive Cancer Center, University of Alabama at Birmingham School of Medicine
- Department of Pharmacology and Toxicology, Comprehensive Cancer Center, University of Alabama at Birmingham School of Medicine
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25
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Hanssen-Bauer A, Solvang-Garten K, Sundheim O, Peña-Diaz J, Andersen S, Slupphaug G, Krokan HE, Wilson DM, Akbari M, Otterlei M. XRCC1 coordinates disparate responses and multiprotein repair complexes depending on the nature and context of the DNA damage. Environ Mol Mutagen 2011; 52:623-635. [PMID: 21786338 PMCID: PMC3229989 DOI: 10.1002/em.20663] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/21/2011] [Revised: 05/02/2011] [Accepted: 05/25/2011] [Indexed: 05/31/2023]
Abstract
XRCC1 is a scaffold protein capable of interacting with several DNA repair proteins. Here we provide evidence for the presence of XRCC1 in different complexes of sizes from 200 to 1500 kDa, and we show that immunoprecipitates using XRCC1 as bait are capable of complete repair of AP sites via both short patch (SP) and long patch (LP) base excision repair (BER). We show that POLβ and PNK colocalize with XRCC1 in replication foci and that POLβ and PNK, but not PCNA, colocalize with constitutively present XRCC1-foci as well as damage-induced foci when low doses of a DNA-damaging agent are applied. We demonstrate that the laser dose used for introducing DNA damage determines the repertoire of DNA repair proteins recruited. Furthermore, we demonstrate that recruitment of POLβ and PNK to regions irradiated with low laser dose requires XRCC1 and that inhibition of PARylation by PARP-inhibitors only slightly reduces the recruitment of XRCC1, PNK, or POLβ to sites of DNA damage. Recruitment of PCNA and FEN-1 requires higher doses of irradiation and is enhanced by XRCC1, as well as by accumulation of PARP-1 at the site of DNA damage. These data improve our understanding of recruitment of BER proteins to sites of DNA damage and provide evidence for a role of XRCC1 in the organization of BER into multiprotein complexes of different sizes.
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Affiliation(s)
- Audun Hanssen-Bauer
- Department of Cancer Research and Molecular Medicine, Faculty of Medicine, Norwegian University of Science and TechnologyTrondheim, Norway
| | - Karin Solvang-Garten
- Department of Cancer Research and Molecular Medicine, Faculty of Medicine, Norwegian University of Science and TechnologyTrondheim, Norway
| | - Ottar Sundheim
- Department of Cancer Research and Molecular Medicine, Faculty of Medicine, Norwegian University of Science and TechnologyTrondheim, Norway
| | - Javier Peña-Diaz
- Department of Cancer Research and Molecular Medicine, Faculty of Medicine, Norwegian University of Science and TechnologyTrondheim, Norway
| | - Sonja Andersen
- Department of Cancer Research and Molecular Medicine, Faculty of Medicine, Norwegian University of Science and TechnologyTrondheim, Norway
| | - Geir Slupphaug
- Department of Cancer Research and Molecular Medicine, Faculty of Medicine, Norwegian University of Science and TechnologyTrondheim, Norway
| | - Hans E Krokan
- Department of Cancer Research and Molecular Medicine, Faculty of Medicine, Norwegian University of Science and TechnologyTrondheim, Norway
| | - David M Wilson
- Laboratory of Molecular Gerontology, National Institute on AgingNIH, Baltimore, Maryland, USA
| | - Mansour Akbari
- Department of Cancer Research and Molecular Medicine, Faculty of Medicine, Norwegian University of Science and TechnologyTrondheim, Norway
| | - Marit Otterlei
- Department of Cancer Research and Molecular Medicine, Faculty of Medicine, Norwegian University of Science and TechnologyTrondheim, Norway
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26
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McEllin B, Camacho CV, Mukherjee B, Hahm B, Tomimatsu N, Bachoo RM, Burma S. PTEN loss compromises homologous recombination repair in astrocytes: implications for glioblastoma therapy with temozolomide or poly(ADP-ribose) polymerase inhibitors. Cancer Res 2010; 70:5457-64. [PMID: 20530668 PMCID: PMC2896430 DOI: 10.1158/0008-5472.can-09-4295] [Citation(s) in RCA: 189] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Glioblastomas (GBM) are lethal brain tumors that are highly resistant to therapy. The only meaningful improvement in therapeutic response came from use of the S(N)1-type alkylating agent temozolomide in combination with ionizing radiation. However, no genetic markers that might predict a better response to DNA alkylating agents have been identified in GBMs, except for loss of O(6-)methylguanine-DNA methyltransferase via promoter methylation. In this study, using genetically defined primary murine astrocytes as well as human glioma lines, we show that loss of phosphatase and tensin homolog deleted on chromosome 10 (PTEN) confers sensitivity to N-methyl-N'-nitro-N-nitrosoguanidine (MNNG), a functional analogue of temozolomide. We find that MNNG induces replication-associated DNA double-strand breaks (DSB), which are inefficiently repaired in PTEN-deficient astrocytes and trigger apoptosis. Mechanistically, this is because PTEN-null astrocytes are compromised in homologous recombination (HR), which is important for the repair of replication-associated DSBs. Our results suggest that reduced levels of Rad51 paralogs in PTEN-null astrocytes might underlie the HR deficiency of these cells. Importantly, the HR deficiency of PTEN-null cells renders them sensitive to the poly(ADP-ribose) polymerase (PARP) inhibitor ABT-888 due to synthetic lethality. In sum, our results tentatively suggest that patients with PTEN-null GBMs (about 36%) may especially benefit from treatment with DNA alkylating agents such as temozolomide. Significantly, our results also provide a rational basis for treating the subgroup of patients who are PTEN deficient with PARP inhibitors in addition to the current treatment regimen of radiation and temozolomide.
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Affiliation(s)
- Brian McEllin
- Department of Radiation Oncology, University of Texas Southwestern Medical Center at Dallas, Dallas, Texas
| | - Cristel V. Camacho
- Department of Radiation Oncology, University of Texas Southwestern Medical Center at Dallas, Dallas, Texas
| | - Bipasha Mukherjee
- Department of Radiation Oncology, University of Texas Southwestern Medical Center at Dallas, Dallas, Texas
| | - Brandon Hahm
- Department of Radiation Oncology, University of Texas Southwestern Medical Center at Dallas, Dallas, Texas
| | - Nozomi Tomimatsu
- Department of Radiation Oncology, University of Texas Southwestern Medical Center at Dallas, Dallas, Texas
| | - Robert M. Bachoo
- Department of Neurology, University of Texas Southwestern Medical Center at Dallas, Dallas, Texas
| | - Sandeep Burma
- Department of Radiation Oncology, University of Texas Southwestern Medical Center at Dallas, Dallas, Texas
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27
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Wang X, Weaver DT. The ups and downs of DNA repair biomarkers for PARP inhibitor therapies. Am J Cancer Res 2010; 1:301-327. [PMID: 21968427 PMCID: PMC3180060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2010] [Accepted: 01/02/2011] [Indexed: 05/31/2023] Open
Abstract
PARP inhibitors are emerging as a valuable new drug class in the treatment of cancer. Recent discoveries make a compelling case for the complexity of DNA repair biomarker evaluation and underscore the need to examine at multiple biomarkers in a relational manner. This review updates the current trends in DNA repair biomarker strategies in use for the PARP inhibitors and describes the impact of many DNA repair biomarkers on PARP inhibitor benefit in the cancer clinic.
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Affiliation(s)
- Xiaozhe Wang
- On-Q-ity, Inc. 610 Lincoln St. Waltham, Massachusetts, 02451, USA
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28
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De Soto JA, Deng CX. PARP-1 inhibitors: are they the long-sought genetically specific drugs for BRCA1/2-associated breast cancers? Int J Med Sci 2006; 3:117-23. [PMID: 16906222 PMCID: PMC1525219 DOI: 10.7150/ijms.3.117] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/06/2006] [Accepted: 07/12/2006] [Indexed: 01/15/2023] Open
Abstract
Recent studies demonstrated that PARP-1 [poly(ADP-ribose) polymerase-1] inhibitors kill breast cancer associated gene-1 and -2 (BRCA1/2) deficient cells with extremely high efficiency while BRCA+/- and BRCA+/+ cells are relatively non-responsive to the treatment. It was therefore proposed that PARP-1 inhibitors might be the long-sought genetically specific drugs that are both safe and effective for treating BRCA1/2-associated breast cancers. However, a report published in a recent issue of the International Journal of Biological Sciences revealed that PARP-1 inhibitors, although able to kill naïve BRCA1 mutant cells with high specificity both in vitro and in vivo, exhibit minimal specificity in inhibiting the growth of mouse mammary tumor cells irrespective of their BRCA1 status in allograft nude mice. Non-specific inhibition in human BRCA1+/+, BRCA1+/-, and BRCA1-/- breast cancer cells by PARP-1 inhibitors was also observed. Additional mutations occurring during cancer progression may be a culprit, although the exact cause for the resistance of BRCA1-/- breast cancer cells to PARP-1 inhibitors remains elusive. These findings suggest that PARP inhibition may serve as an approach for the prevention of BRCA related breast cancer and may be useful in combination with other chemotherapeutic agents in the treatment of breast cancer.
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Affiliation(s)
- Joseph A De Soto
- Genetics of Development and Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, 10/9N105, 10 Center Drive, Bethesda, MD 20892, USA
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