1
|
Ji Y, Chen W, Wang X. Bromodomain and Extraterminal Domain Protein 2 in Multiple Human Diseases. J Pharmacol Exp Ther 2024; 389:277-288. [PMID: 38565308 DOI: 10.1124/jpet.123.002036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 03/22/2024] [Accepted: 03/25/2024] [Indexed: 04/04/2024] Open
Abstract
Bromodomain and extraterminal domain protein 2 (BRD2), a member of the bromodomain and extraterminal domain (BET) protein family, is a crucial epigenetic regulator with significant function in various diseases and cellular processes. The central function of BRD2 is modulating gene transcription by binding to acetylated lysine residues on histones and transcription factors. This review highlights key findings on BRD2 in recent years, emphasizing its roles in maintaining genomic stability, influencing chromatin spatial organization, and participating in transcriptional regulation. BRD2's diverse functions are underscored by its involvement in diseases such as malignant tumors, neurologic disorders, inflammatory conditions, metabolic diseases, and virus infection. Notably, the potential role of BRD2 as a diagnostic marker and therapeutic target is discussed in the context of various diseases. Although pan inhibitors targeting the BET family have shown promise in preclinical studies, a critical need exists for the development of highly selective BRD2 inhibitors. In conclusion, this review offers insights into the multifaceted nature of BRD2 and calls for continued research to unravel its intricate mechanisms and harness its therapeutic potential. SIGNIFICANCE STATEMENT: BRD2 is involved in the occurrence and development of diseases through maintaining genomic stability, influencing chromatin spatial organization, and participating in transcriptional regulation. Targeting BRD2 through protein degradation-targeting complexes technology is emerging as a promising therapeutic approach for malignant cancer and inflammatory diseases.
Collapse
Affiliation(s)
- Yikang Ji
- Department of Oral and Maxillofacial-Head and Neck Oncology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology; Shanghai Research Institute of Stomatology
| | - Wantao Chen
- Department of Oral and Maxillofacial-Head and Neck Oncology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology; Shanghai Research Institute of Stomatology
| | - Xu Wang
- Department of Oral and Maxillofacial-Head and Neck Oncology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology; Shanghai Research Institute of Stomatology
| |
Collapse
|
2
|
Hu H, Sun C, Chen J, Li Z. Organoids in ovarian cancer: a platform for disease modeling, precision medicine, and drug assessment. J Cancer Res Clin Oncol 2024; 150:146. [PMID: 38509422 PMCID: PMC10955023 DOI: 10.1007/s00432-024-05654-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Accepted: 02/17/2024] [Indexed: 03/22/2024]
Abstract
Ovarian cancer (OC) is a major cause of gynecological cancer mortality, necessitating enhanced research. Organoids, cellular clusters grown in 3D model, have emerged as a disruptive paradigm, transcending the limitations inherent to conventional models by faithfully recapitulating key morphological, histological, and genetic attributes. This review undertakes a comprehensive exploration of the potential in organoids derived from murine, healthy population, and patient origins, encompassing a spectrum that spans foundational principles to pioneering applications. Organoids serve as preclinical models, allowing us to predict how patients will respond to treatments and guiding the development of personalized therapies. In the context of evaluating new drugs, organoids act as versatile platforms, enabling thorough testing of innovative combinations and novel agents. Remarkably, organoids mimic the dynamic nature of OC progression, from its initial formation to the spread to other parts of the body, shedding light on intricate details that hold significant importance. By functioning at an individualized level, organoids uncover the complex mechanisms behind drug resistance, revealing strategic opportunities for effective treatments.
Collapse
Affiliation(s)
- Haiyao Hu
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, China
- Key Laboratory of Obstetrics and Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Chong'en Sun
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, China
- Key Laboratory of Obstetrics and Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Jingyao Chen
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, China
| | - Zhengyu Li
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, China.
- Key Laboratory of Obstetrics and Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China.
| |
Collapse
|
3
|
Wang ZQ, Zhang ZC, Wu YY, Pi YN, Lou SH, Liu TB, Lou G, Yang C. Bromodomain and extraterminal (BET) proteins: biological functions, diseases, and targeted therapy. Signal Transduct Target Ther 2023; 8:420. [PMID: 37926722 PMCID: PMC10625992 DOI: 10.1038/s41392-023-01647-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 08/23/2023] [Accepted: 09/12/2023] [Indexed: 11/07/2023] Open
Abstract
BET proteins, which influence gene expression and contribute to the development of cancer, are epigenetic interpreters. Thus, BET inhibitors represent a novel form of epigenetic anticancer treatment. Although preliminary clinical trials have shown the anticancer potential of BET inhibitors, it appears that these drugs have limited effectiveness when used alone. Therefore, given the limited monotherapeutic activity of BET inhibitors, their use in combination with other drugs warrants attention, including the meaningful variations in pharmacodynamic activity among chosen drug combinations. In this paper, we review the function of BET proteins, the preclinical justification for BET protein targeting in cancer, recent advances in small-molecule BET inhibitors, and preliminary clinical trial findings. We elucidate BET inhibitor resistance mechanisms, shed light on the associated adverse events, investigate the potential of combining these inhibitors with diverse therapeutic agents, present a comprehensive compilation of synergistic treatments involving BET inhibitors, and provide an outlook on their future prospects as potent antitumor agents. We conclude by suggesting that combining BET inhibitors with other anticancer drugs and innovative next-generation agents holds great potential for advancing the effective targeting of BET proteins as a promising anticancer strategy.
Collapse
Affiliation(s)
- Zhi-Qiang Wang
- Department of Gynecology Oncology, Harbin Medical University Cancer Hospital, Harbin, 150086, China
| | - Zhao-Cong Zhang
- Department of Gynecology Oncology, Harbin Medical University Cancer Hospital, Harbin, 150086, China
| | - Yu-Yang Wu
- School of Optometry and Ophthalmology and Eye Hospital, Wenzhou Medical University, Wenzhou, China
| | - Ya-Nan Pi
- Department of Gynecology Oncology, Harbin Medical University Cancer Hospital, Harbin, 150086, China
| | - Sheng-Han Lou
- Department of Colorectal Surgery, Harbin Medical University Cancer Hospital, Harbin, China
| | - Tian-Bo Liu
- Department of Gynecology Oncology, Harbin Medical University Cancer Hospital, Harbin, 150086, China
| | - Ge Lou
- Department of Gynecology Oncology, Harbin Medical University Cancer Hospital, Harbin, 150086, China.
| | - Chang Yang
- Department of Gynecology Oncology, Harbin Medical University Cancer Hospital, Harbin, 150086, China.
| |
Collapse
|
4
|
Ma T, Chen Y, Yi ZG, Li YH, Bai J, Li LJ, Zhang LS. BET in hematologic tumors: Immunity, pathogenesis, clinical trials and drug combinations. Genes Dis 2023; 10:2306-2319. [PMID: 37554207 PMCID: PMC10404881 DOI: 10.1016/j.gendis.2022.03.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 01/14/2022] [Accepted: 03/02/2022] [Indexed: 12/24/2022] Open
Abstract
The bromodomain and extra-terminal (BET) proteins act as "readers" for lysine acetylation and facilitate the recruitment of transcriptional elongation complexes. BET protein is associated with transcriptional elongation of genes such as c-MYC and BCL-2, and is involved in the regulation of cell cycle and apoptosis. Meanwhile, BET inhibitors (BETi) have regulatory effects on immune checkpoints, immune cells, and cytokine expression. The role of BET proteins and BETi in a variety of tumors has been studied. This paper reviews the recent research progress of BET and BETi in hematologic tumors (mainly leukemia, lymphoma and multiple myeloma) from cellular level studies, animal studies, clinical trials, drug combination, etc. BETi has a promising future in hematologic tumors, and future research directions may focus on the combination with other drugs to improve the efficacy.
Collapse
Affiliation(s)
- Tao Ma
- Department of Hematology, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, China
- Department of Hematology, Lanzhou University Second Hospital, Lanzhou, Gansu 730000, China
| | - Yan Chen
- Department of Hematology, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, China
| | - Zhi-Gang Yi
- Department of Hematology, Lanzhou University Second Hospital, Lanzhou, Gansu 730000, China
| | - Yan-Hong Li
- Department of Hematology, Lanzhou University Second Hospital, Lanzhou, Gansu 730000, China
| | - Jun Bai
- Department of Hematology, Lanzhou University Second Hospital, Lanzhou, Gansu 730000, China
| | - Li-Juan Li
- Department of Hematology, Lanzhou University Second Hospital, Lanzhou, Gansu 730000, China
| | - Lian-Sheng Zhang
- Department of Hematology, Lanzhou University Second Hospital, Lanzhou, Gansu 730000, China
| |
Collapse
|
5
|
Oh DH, Ma X, Hogg SJ, He J, Kearney C, Brasacchio D, Susanto O, Maher B, Jennings IG, Newbold A, Fraser P, Gruber E, Kats LM, Gregory GP, Johnstone RW, Thompson PE, Shortt J. Rationally designed chimeric PI3K-BET bromodomain inhibitors elicit curative responses in MYC-driven lymphoma. Proc Natl Acad Sci U S A 2023; 120:e2306414120. [PMID: 37643213 PMCID: PMC10483632 DOI: 10.1073/pnas.2306414120] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Accepted: 08/01/2023] [Indexed: 08/31/2023] Open
Abstract
Targeted inhibitors of bromodomain and extraterminal (BET)-bromodomains and phosphatidylinositol-3-kinase (PI3K) signaling demonstrate potent but self-limited antilymphoma activity as single agents in the context of cellular Myelocytomatosis (cMYC) oncogene-dysregulation. However, combined PI3K and BET inhibition imparts synergistic anticancer activity with the potential for more sustained disease responses due to the mutual antagonism of compensatory epigenetic and signaling networks. Here, we describe the mechanistic and therapeutic validation of rationally designed dual PI3K/BET bromodomain inhibitors, built by linkage of established PI3K and BET inhibitor pharmacophores. The lead candidate demonstrates high selectivity, nanomolar range cellular potency, and compelling in vivo efficacy, including curative responses in the aggressive Eµ-Myc lymphoma model. These studies further support the therapeutic strategy of combined PI3K and BET inhibition and provide a potential step-change in approach to orthogonal MYC antagonism using optimized chimeric small-molecule technology.
Collapse
Affiliation(s)
- Danielle H. Oh
- Blood Cancer Therapeutics Laboratory, School of Clinical Sciences at Monash Health, Faculty of Medicine Nursing and Health Sciences, Monash University, MelbourneVIC3168, Australia
- Monash Haematology, Monash Health, MelbourneVIC3168, Australia
- Cancer Biology Therapeutics Program, Peter MacCallum Cancer Centre, MelbourneVIC3000, Australia
| | - Xiao Ma
- Medicinal Chemistry, Monash Institute of Pharmaceutical Sciences, Faculty of Pharmacy and Pharmaceutical Sciences, Monash University, ParkvilleVIC3052, Australia
- Department of Systems Biology, Laboratory of Systems Pharmacology, Harvard Medical School, Boston, MA02115
| | - Simon J. Hogg
- Cancer Biology Therapeutics Program, Peter MacCallum Cancer Centre, MelbourneVIC3000, Australia
- Oncology Discovery Research, Abbvie, South San Francisco, CA94080
| | - Jackson He
- Blood Cancer Therapeutics Laboratory, School of Clinical Sciences at Monash Health, Faculty of Medicine Nursing and Health Sciences, Monash University, MelbourneVIC3168, Australia
- Medicinal Chemistry, Monash Institute of Pharmaceutical Sciences, Faculty of Pharmacy and Pharmaceutical Sciences, Monash University, ParkvilleVIC3052, Australia
| | - Conor Kearney
- Olivia Newton-John Cancer Research Institute, HeidelbergVIC3084, Australia
- School of Cancer Medicine, La Trobe University, HeidelbergVIC3084, Australia
| | - Daniella Brasacchio
- Blood Cancer Therapeutics Laboratory, School of Clinical Sciences at Monash Health, Faculty of Medicine Nursing and Health Sciences, Monash University, MelbourneVIC3168, Australia
| | - Olivia Susanto
- Blood Cancer Therapeutics Laboratory, School of Clinical Sciences at Monash Health, Faculty of Medicine Nursing and Health Sciences, Monash University, MelbourneVIC3168, Australia
| | - Belinda Maher
- Blood Cancer Therapeutics Laboratory, School of Clinical Sciences at Monash Health, Faculty of Medicine Nursing and Health Sciences, Monash University, MelbourneVIC3168, Australia
| | - Ian G. Jennings
- Medicinal Chemistry, Monash Institute of Pharmaceutical Sciences, Faculty of Pharmacy and Pharmaceutical Sciences, Monash University, ParkvilleVIC3052, Australia
| | - Andrea Newbold
- Cancer Biology Therapeutics Program, Peter MacCallum Cancer Centre, MelbourneVIC3000, Australia
- Sir Peter MacCallum Department of Medical Oncology, University of Melbourne, MelbourneVIC3000, Australia
| | - Peter Fraser
- Cancer Biology Therapeutics Program, Peter MacCallum Cancer Centre, MelbourneVIC3000, Australia
- Sir Peter MacCallum Department of Medical Oncology, University of Melbourne, MelbourneVIC3000, Australia
| | - Emily Gruber
- Cancer Biology Therapeutics Program, Peter MacCallum Cancer Centre, MelbourneVIC3000, Australia
- Sir Peter MacCallum Department of Medical Oncology, University of Melbourne, MelbourneVIC3000, Australia
| | - Lev M. Kats
- Cancer Biology Therapeutics Program, Peter MacCallum Cancer Centre, MelbourneVIC3000, Australia
- Sir Peter MacCallum Department of Medical Oncology, University of Melbourne, MelbourneVIC3000, Australia
| | - Gareth P. Gregory
- Blood Cancer Therapeutics Laboratory, School of Clinical Sciences at Monash Health, Faculty of Medicine Nursing and Health Sciences, Monash University, MelbourneVIC3168, Australia
- Monash Haematology, Monash Health, MelbourneVIC3168, Australia
- Cancer Biology Therapeutics Program, Peter MacCallum Cancer Centre, MelbourneVIC3000, Australia
| | - Ricky W. Johnstone
- Cancer Biology Therapeutics Program, Peter MacCallum Cancer Centre, MelbourneVIC3000, Australia
- Sir Peter MacCallum Department of Medical Oncology, University of Melbourne, MelbourneVIC3000, Australia
| | - Philip E. Thompson
- Medicinal Chemistry, Monash Institute of Pharmaceutical Sciences, Faculty of Pharmacy and Pharmaceutical Sciences, Monash University, ParkvilleVIC3052, Australia
| | - Jake Shortt
- Blood Cancer Therapeutics Laboratory, School of Clinical Sciences at Monash Health, Faculty of Medicine Nursing and Health Sciences, Monash University, MelbourneVIC3168, Australia
- Monash Haematology, Monash Health, MelbourneVIC3168, Australia
- Cancer Biology Therapeutics Program, Peter MacCallum Cancer Centre, MelbourneVIC3000, Australia
- Sir Peter MacCallum Department of Medical Oncology, University of Melbourne, MelbourneVIC3000, Australia
| |
Collapse
|
6
|
Gray HJ, Chatterjee P, Rosati R, Appleyard LR, Durenberger GJ, Diaz RL, Swan HA, Peretti D, Pollastro M, Ainge T, Kapeli K, Pereira S, Margossian AL, Banda K, Goff BA, Swisher EM, Bernard B, Kemp CJ, Grandori C. Extraordinary clinical response to ibrutinib in low-grade ovarian cancer guided by organoid drug testing. NPJ Precis Oncol 2023; 7:45. [PMID: 37202426 PMCID: PMC10195827 DOI: 10.1038/s41698-023-00379-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Accepted: 04/18/2023] [Indexed: 05/20/2023] Open
Abstract
Low-grade serous ovarian cancer (LGSOC) typically responds poorly to standard platinum-based chemotherapy and new therapeutic approaches are needed. We describe a remarkable response to targeted therapy in a patient with platinum-resistant, advanced LGSOC who had failed standard-of-care chemotherapy and two surgeries. The patient was in rapid decline and entering hospice care on home intravenous (i.v.) opioid analgesics and a malignant bowel obstruction requiring a G-tube. Genomic analysis of the patient's tumor did not indicate obvious therapeutic options. In contrast, a CLIA-certified drug sensitivity assay of an organoid culture derived from the patient's tumor identified several therapeutic choices, including Bruton's tyrosine kinase (BTK) inhibitor ibrutinib, as well as the EGFR inhibitors afatinib and erlotinib. Following off-label administration of daily ibrutinib as monotherapy, the patient had an exceptional clinical turnaround over the following 65 weeks with normalization of CA-125 levels, resolution of the malignant bowel obstruction, halting of pain medications, and improvement of performance status from ECOG 3 to ECOG 1. After 65 weeks of stable disease, the patient's CA-125 levels began to rise, at which point the patient discontinued ibrutinib and began taking afatinib as monotherapy. The patient's CA-125 levels remained stable for an additional 38 weeks but due to anemia and rising CA-125 levels, the patient switched to erlotinib and is currently being monitored. This case highlights the clinical utility of ex vivo drug testing of patient-derived tumor organoids as a new functional precision medicine approach to identify effective personalized therapies for patients who have failed standard-of-care treatments.
Collapse
Affiliation(s)
- Heidi J Gray
- Division of Gynecology Oncology, University of Washington, Seattle, WA, USA
| | | | | | | | | | | | | | | | | | | | | | | | | | - Kalyan Banda
- Clinical Research Division, Fred Hutchinson Cancer Center and Division of Medical Oncology, University of Washington, Seattle, WA, USA
| | - Barbara A Goff
- Division of Gynecology Oncology, University of Washington, Seattle, WA, USA
| | | | - Brady Bernard
- SEngine Precision Medicine, Seattle, WA, USA
- Earle A. Chiles Research Institute, Providence Cancer Institute, Portland, OR, USA
| | - Christopher J Kemp
- Division of Human Biology, Fred Hutchinson Cancer Center, Seattle, WA, USA
| | | |
Collapse
|
7
|
Duan W, Yu M, Chen J. BRD4: New Hope in the Battle Against Glioblastoma. Pharmacol Res 2023; 191:106767. [PMID: 37061146 DOI: 10.1016/j.phrs.2023.106767] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 03/30/2023] [Accepted: 04/12/2023] [Indexed: 04/17/2023]
Abstract
The BET family proteins, comprising BRD2, BRD3 and BRD4, represent epigenetic readers of acetylated histone marks that play pleiotropic roles in the tumorigenesis and growth of multiple human malignancies, including glioblastoma (GBM). A growing body of investigation has proven BET proteins as valuable therapeutic targets for cancer treatment. Recently, several BRD4 inhibitors and degraders have been reported to successfully suppress GBM in preclinical and clinical studies. However, the precise role and mechanism of BRD4 in the pathogenesis of GBM have not been fully elucidated or summarized. This review focuses on summarizing the roles and mechanisms of BRD4 in the context of the initiation and development of GBM. In addition, several BRD4 inhibitors have been evaluated for therapeutic purposes as monotherapy or in combination with chemotherapy, radiotherapy, and immune therapies. Here, we provide a critical appraisal of studies evaluating various BRD4 inhibitors and degraders as novel treatment strategies against GBM.
Collapse
Affiliation(s)
- Weichen Duan
- Department of Oncology, Shengjing Hospital of China Medical University, Shenyang, 110004, China
| | - Miao Yu
- Department of Oncology, Shengjing Hospital of China Medical University, Shenyang, 110004, China
| | - Jiajia Chen
- Department of Oncology, Shengjing Hospital of China Medical University, Shenyang, 110004, China.
| |
Collapse
|
8
|
BET inhibitor trotabresib in heavily pretreated patients with solid tumors and diffuse large B-cell lymphomas. Nat Commun 2023; 14:1359. [PMID: 36914652 PMCID: PMC10011554 DOI: 10.1038/s41467-023-36976-1] [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: 01/14/2022] [Accepted: 02/23/2023] [Indexed: 03/16/2023] Open
Abstract
Bromodomain and extraterminal proteins (BET) play key roles in regulation of gene expression, and may play a role in cancer-cell proliferation, survival, and oncogenic progression. CC-90010-ST-001 (NCT03220347) is an open-label phase I study of trotabresib, an oral BET inhibitor, in heavily pretreated patients with advanced solid tumors and relapsed/refractory diffuse large B-cell lymphoma (DLBCL). Primary endpoints were the safety, tolerability, maximum tolerated dose, and RP2D of trotabresib. Secondary endpoints were clinical benefit rate (complete response [CR] + partial response [PR] + stable disease [SD] of ≥4 months' duration), objective response rate (CR + PR), duration of response or SD, progression-free survival, overall survival, and the pharmacokinetics (PK) of trotabresib. In addition, part C assessed the effects of food on the PK of trotabresib as a secondary endpoint. The dose escalation (part A) showed that trotabresib was well tolerated, had single-agent activity, and determined the recommended phase 2 dose (RP2D) and schedule for the expansion study. Here, we report long-term follow-up results from part A (N = 69) and data from patients treated with the RP2D of 45 mg/day 4 days on/24 days off or an alternate RP2D of 30 mg/day 3 days on/11 days off in the dose-expansion cohorts (parts B [N = 25] and C [N = 41]). Treatment-related adverse events (TRAEs) are reported in almost all patients. The most common severe TRAEs are hematological. Toxicities are generally manageable, allowing some patients to remain on treatment for ≥2 years, with two patients receiving ≥3 years of treatment. Trotabresib monotherapy shows antitumor activity, with an ORR of 13.0% (95% CI, 2.8-33.6) in patients with R/R DLBCL (part B) and an ORR of 0.0% (95% CI, 0.0-8.6) and a CBR of 31.7% (95% CI, 18.1-48.1) in patients with advanced solid tumors (part C). These results support further investigation of trotabresib in combination with other anticancer agents.
Collapse
|
9
|
Mandl A, Markowski MC, Carducci MA, Antonarakis ES. Role of bromodomain and extraterminal (BET) proteins in prostate cancer. Expert Opin Investig Drugs 2023; 32:213-228. [PMID: 36857796 DOI: 10.1080/13543784.2023.2186851] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2023]
Abstract
INTRODUCTION The bromodomain and extraterminal (BET) family of proteins are epigenetic readers of acetylated histones and are critical activators of oncogenic networks across many cancers. Therapeutic targeting of BET proteins has been an attractive area of clinical development for metastatic castration-resistant prostate cancer. In recent years, many structurally diverse BET inhibitors have been discovered and tested. Preclinical studies have demonstrated significant antiproliferative activity of BET inhibitors against prostate cancer. However, their clinical success as monotherapies has been limited by treatment-associated toxicities, primary and acquired drug resistance, and a lack of predictive biomarkers of benefit. AREAS COVERED This review provides an overview of advancements in BET inhibitor design, preclinical research, and conclusions from clinical trials in prostate cancer. We speculate on incorporating BET inhibitors into combination regimens with other agents to improve the therapeutic index of BET inhibition in treating prostate cancer. EXPERT OPINION The therapeutic potential of BET inhibitors for prostate cancer has been demonstrated in preclinical studies. However, further research is needed to identify biomarkers that can predict sensitivity to BET inhibitors and to develop novel, highly selective inhibitors to reduce toxicities. Finally, BET inhibitors are likely to hold the most clinical potential in combination with other agents.
Collapse
Affiliation(s)
- Adel Mandl
- Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins, Baltimore, MD, USA
| | - Mark C Markowski
- Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins, Baltimore, MD, USA
| | - Michael A Carducci
- Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins, Baltimore, MD, USA
| | - Emmanuel S Antonarakis
- Department of Medicine, University of Minnesota Masonic Cancer Center, Minneapolis, MN, USA
| |
Collapse
|
10
|
Ye Y, Huang Z, Zhang M, Li J, Zhang Y, Lou C. Synergistic therapeutic potential of alpelisib in cancers (excluding breast cancer): Preclinical and clinical evidences. Biomed Pharmacother 2023; 159:114183. [PMID: 36641927 DOI: 10.1016/j.biopha.2022.114183] [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: 11/11/2022] [Revised: 12/19/2022] [Accepted: 12/28/2022] [Indexed: 01/15/2023] Open
Abstract
The phosphoinositide 3-kinase (PI3K) signaling pathway is well-known for its important role in cancer growth, proliferation and migration. The activation of PI3K pathway is always connected with endocrine resistance and poor prognosis in cancers. Alpelisib, a selective inhibitor of PI3K, has been demonstrated to be effective in combination with endocrine therapy in HR+ PIK3CA-mutated advanced breast cancer in preclinical and clinical trials. Recently, the synergistic effects of alpelisib combined with targeted agents have been widely reported in PIK3CA-mutated cancer cells, such as breast, head and neck squamous cell carcinoma (HNSCC), cervical, liver, pancreatic and lung cancer. However, previous reviews mainly focused on the pharmacological activities of alpelisib in breast cancer. The synergistic therapeutic potential of alpelisib in other cancers has not yet been well reviewed. In this review, an extensive study of related literatures (published until December 20, 2022) regarding the anti-cancer functions and synergistic effects of alpelisib was carried out through the databases. Useful information was extracted. We summarized the preclinical and clinical studies of alpelisib in combination with targeted anti-cancer agents in cancer treatment (excluding breast cancer). The combinations of alpelisib and other targeted agents significantly improved the therapeutic efficacy both in preclinical and clinical studies. Unfortunately, synergistic therapies still could not effectively avoid the possible toxicities and adverse events during treatment. Finally, some prospects for the combination studies in cancer treatment were provided in the paper. Taken together, this review provided valuable information for alpelisib in preclinical and clinical applications.
Collapse
Affiliation(s)
- Yuhao Ye
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, China.
| | - Zhiyu Huang
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, China.
| | - Maoqing Zhang
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, China.
| | - Jiayue Li
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, China.
| | - Yiqiong Zhang
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, China.
| | - Chenghua Lou
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, China.
| |
Collapse
|
11
|
Psilopatis I, Sykaras AG, Mandrakis G, Vrettou K, Theocharis S. Patient-Derived Organoids: The Beginning of a New Era in Ovarian Cancer Disease Modeling and Drug Sensitivity Testing. Biomedicines 2022; 11:biomedicines11010001. [PMID: 36672509 PMCID: PMC9855526 DOI: 10.3390/biomedicines11010001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 12/14/2022] [Accepted: 12/19/2022] [Indexed: 12/24/2022] Open
Abstract
Ovarian cancer (OC) is the leading cause of death from gynecological malignancies. Despite great advances in treatment strategies, therapeutic resistance and the gap between preclinical data and actual clinical efficacy justify the necessity of developing novel models for investigating OC. Organoids represent revolutionary three-dimensional cell culture models, deriving from stem cells and reflecting the primary tissue's biology and pathology. The aim of the current review is to study the current status of mouse- and patient-derived organoids, as well as their potential to model carcinogenesis and perform drug screenings for OC. Herein, we describe the role of organoids in the assessment of high-grade serous OC (HGSOC) cells-of-origin, illustrate their use as promising preclinical OC models and highlight the advantages of organoid technology in terms of disease modelling and drug sensitivity testing.
Collapse
Affiliation(s)
- Iason Psilopatis
- First Department of Pathology, Medical School, National and Kapodistrian University of Athens, 75 Mikras Asias Street, Bld 10, Goudi, 11527 Athens, Greece
- Department of Gynecology, Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt—Universität zu Berlin, Augustenburger Platz 1, 13353 Berlin, Germany
| | - Alexandros G. Sykaras
- First Department of Pathology, Medical School, National and Kapodistrian University of Athens, 75 Mikras Asias Street, Bld 10, Goudi, 11527 Athens, Greece
- Department of Cytopathology, Aretaieion Hospital, Medical School, National and Kapodistrian University of Athens, 11528 Athens, Greece
| | - Georgios Mandrakis
- First Department of Pathology, Medical School, National and Kapodistrian University of Athens, 75 Mikras Asias Street, Bld 10, Goudi, 11527 Athens, Greece
| | - Kleio Vrettou
- First Department of Pathology, Medical School, National and Kapodistrian University of Athens, 75 Mikras Asias Street, Bld 10, Goudi, 11527 Athens, Greece
| | - Stamatios Theocharis
- First Department of Pathology, Medical School, National and Kapodistrian University of Athens, 75 Mikras Asias Street, Bld 10, Goudi, 11527 Athens, Greece
- Correspondence:
| |
Collapse
|
12
|
Wu L, Tu Z, Bao Y, Zhai Q, Jin L. Long noncoding RNA NEAT1 decreases polycystic ovary syndrome progression via the modulation of the microRNA-324-3p and BRD3 axis. Cell Biol Int 2022; 46:2075-2084. [PMID: 36040750 DOI: 10.1002/cbin.11893] [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: 02/24/2022] [Revised: 08/02/2022] [Accepted: 08/10/2022] [Indexed: 11/10/2022]
Abstract
Long noncoding RNA nuclear-enriched abundant transcript 1 (NEAT1) is believed to be involved in many gynecological and obstetrics disorders. Nevertheless, the role of NEAT1 in polycystic ovary syndrome (PCOS) is scarcely investigated. Our study aimed to investigate the role of NEAT1, microRNA (miR)-324-3p, and bromodomain containing 3 (BRD3) in PCOS. First, 80 women with PCOS and 80 healthy (non-PCOS) women were included, and their serum hormone levels were tested. Next, the PCOS mouse model was established by dehydroepiandrosterone injection, and then NEAT1, miR-324-3p, and BRD3 expression levels were detected in the PCOS mice. Lentivirus carrying short hairpin-NEAT1 or miR-324-3p agomir was injected into the PCOS mice to determine the change in biochemical indices and pathology. Moreover, a rescue experiment was conducted, after which, the binding relationships among NEAT1, miR-324-3p, and BRD3 were analyzed. NEAT1 and BRD3 were expressed at a high level while miR-324-3p was expressed at a low level in women with PCOS and PCOS mice. Reduced levels of NEAT1 or elevated levels of miR-324-3p mitigated metabolic disorders and alleviated ovarian pathological changes in PCOS mice. Mechanistically, NEAT1 sponged miR-324-3p and miR-324-3p targeted BRD3. In the rescue experiment, elevated miR-324-3p or reduced BRD3 level reversed the effects of the enhanced NEAT1 on metabolic disorders and ovarian pathological changes in PCOS mice. NEAT1 exacerbates metabolic disorders and ovarian pathological changes in PCOS mice by downregulating miR-324-3p and upregulating BRD3. This study gives a novel direction in PCOS treatment.
Collapse
Affiliation(s)
- Le Wu
- Department of Obstetrics and Gynecology, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Zhijian Tu
- Department of Emergency, Wenzhou Lucheng District People's Hospital, Wenzhou, Zhejiang, China
| | - Ying Bao
- Department of Obstetrics and Gynecology, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Qi Zhai
- Department of Obstetrics and Gynecology, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Lixu Jin
- Department of Obstetrics and Gynecology, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| |
Collapse
|
13
|
Li Y, Cen Y, Fang Y, Tang S, Li S, Ren Y, Zhang H, Lu W, Xu J. Breaking the Iron Homeostasis: A "Trojan Horse" Self-Assembled Nanodrug Sensitizes Homologous Recombination Proficient Ovarian Cancer Cells to PARP Inhibition. ACS NANO 2022; 16:12786-12800. [PMID: 35920396 PMCID: PMC9413404 DOI: 10.1021/acsnano.2c04956] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Poly(adenosine diphosphate-ribose) polymerase (PARP) inhibitors are used in ovarian cancer treatment and have greatly improved the survival rates for homologous recombination repair (HRR)-deficient patients. However, their therapeutic efficacy is limited in HRR-proficient ovarian cancer. Thus, sensitizing HRR-proficient ovarian cancer cells to PARP inhibitors is important in clinical practice. Here, a nanodrug, olaparib-Ga, was designed using self-assembly of the PARP inhibitor olaparib into bovine serum albumin through gallic acid gallium(III) coordination via a convenient and green synthetic method. Compared with olaparib, olaparib-Ga featured an ultrasmall size of 7 nm and led to increased suppression of cell viability, induction of DNA damage, and enhanced cell apoptosis in the SKOV3 and OVCAR3 HRR-proficient ovarian cancer cells in vitro. Further experiments indicated that the olaparib-Ga nanodrug could suppress RRM2 expression, activate the Fe2+/ROS/MAPK pathway and HMOX1 signaling, inhibit the PI3K/AKT signaling pathway, and enhance the expression of cleaved-caspase 3 and BAX protein. This, in turn, led to increased cell apoptosis in HRR-proficient ovarian cancer cells. Moreover, olaparib-Ga effectively restrained SKOV3 and OVCAR3 tumor growth and exhibited negligible toxicity in vivo. In conclusion, we propose that olaparib-Ga can act as a promising nanodrug for the treatment of HRR-proficient ovarian cancer.
Collapse
Affiliation(s)
- Yangyang Li
- Women’s
Reproductive Health Laboratory of Zhejiang Province, Women’s
Hospital, Zhejiang University School of
Medicine, Hangzhou 310006, Zhejiang, China
| | - Yixuan Cen
- Women’s
Reproductive Health Laboratory of Zhejiang Province, Women’s
Hospital, Zhejiang University School of
Medicine, Hangzhou 310006, Zhejiang, China
| | - Yifeng Fang
- Department
of General Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou 310016, Zhejiang, China
| | - Sangsang Tang
- Women’s
Reproductive Health Laboratory of Zhejiang Province, Women’s
Hospital, Zhejiang University School of
Medicine, Hangzhou 310006, Zhejiang, China
| | - Sen Li
- Women’s
Reproductive Health Laboratory of Zhejiang Province, Women’s
Hospital, Zhejiang University School of
Medicine, Hangzhou 310006, Zhejiang, China
| | - Yan Ren
- Women’s
Reproductive Health Laboratory of Zhejiang Province, Women’s
Hospital, Zhejiang University School of
Medicine, Hangzhou 310006, Zhejiang, China
| | - Hongbo Zhang
- Pharmaceutical
Sciences Laboratory, Åbo Akademi University, Turku FI-20520, Finland
- Turku
Bioscience Centre, University of Turku and
Åbo Akademi University, Turku FI-20520, Finland
| | - Weiguo Lu
- Women’s
Reproductive Health Laboratory of Zhejiang Province, Women’s
Hospital, Zhejiang University School of
Medicine, Hangzhou 310006, Zhejiang, China
- Department
of Gynecologic Oncology, Women’s Hospital, Zhejiang University School of Medicine, Hangzhou 310006, ZhejiangChina
- Cancer
Center, Zhejiang University, Hangzhou 310058, Zhejiang, China
| | - Junfen Xu
- Women’s
Reproductive Health Laboratory of Zhejiang Province, Women’s
Hospital, Zhejiang University School of
Medicine, Hangzhou 310006, Zhejiang, China
- Department
of Gynecologic Oncology, Women’s Hospital, Zhejiang University School of Medicine, Hangzhou 310006, ZhejiangChina
| |
Collapse
|
14
|
Sonawane A, Vadloori B, Poosala S, Kandarova H, Kulkarni M, Olayanju A, Dey T, Saxena U, Smirnova L, Kanda Y, Reddy J, Dravida S, Biswas S, Vinken M, Gettayacamin M, Ahluwalia A, Mondini F, Bhattacharya S, Kulkarni P, Jacobsen KR, Vangala S, Millás AL. Advances in Animal Models and Cutting-Edge Research in Alternatives: Proceedings of the Second International Conference on 3Rs Research and Progress, Hyderabad, 2021. Altern Lab Anim 2022; 50:156-171. [PMID: 35410493 DOI: 10.1177/02611929221089216] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
The fact that animal models fail to replicate human disease faithfully is now being widely accepted by researchers across the globe. As a result, they are exploring the use of alternatives to animal models. The time has come to refine our experimental practices, reduce the numbers and eventually replace the animals used in research with human-derived and human-relevant 3-D disease models. Oncoseek Bio-Acasta Health, which is an innovative biotechnology start-up company based in Hyderabad and Vishakhapatnam, India, organises an annual International Conference on 3Rs Research and Progress. In 2021, this conference was on 'Advances in Research Animal Models and Cutting-Edge Research in Alternatives'. This annual conference is a platform that brings together eminent scientists and researchers from various parts of the world, to share recent advances from their research in the field of alternatives to animals including new approach methodologies, and to promote practices to help refine animal experiments where alternatives are not available. This report presents the proceedings of the conference, which was held in hybrid mode (i.e. virtual and in-person) in November 2021.
Collapse
Affiliation(s)
| | | | | | - Helena Kandarova
- Centre of Experimental Medicine, Slovak Academy of Science, Slovakia
| | | | | | - Tuli Dey
- Savitribai Phule Pune University, India
| | | | - Lena Smirnova
- Johns Hopkins Bloomberg School of Public Health, USA
| | | | | | | | | | | | - Montip Gettayacamin
- Association for Accreditation of Laboratory Animal Care (AAALAC international), USA
| | - Arti Ahluwalia
- University of Pisa, and Interuniversity Center for the Promotion of 3Rs Principles in Teaching and Research (Centro 3R), Italy
| | | | | | | | | | | | | |
Collapse
|
15
|
Yang J, Song C, Zhan X. The role of protein acetylation in carcinogenesis and targeted drug discovery. Front Endocrinol (Lausanne) 2022; 13:972312. [PMID: 36171897 PMCID: PMC9510633 DOI: 10.3389/fendo.2022.972312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/18/2022] [Accepted: 08/23/2022] [Indexed: 12/01/2022] Open
Abstract
Protein acetylation is a reversible post-translational modification, and is involved in many biological processes in cells, such as transcriptional regulation, DNA damage repair, and energy metabolism, which is an important molecular event and is associated with a wide range of diseases such as cancers. Protein acetylation is dynamically regulated by histone acetyltransferases (HATs) and histone deacetylases (HDACs) in homeostasis. The abnormal acetylation level might lead to the occurrence and deterioration of a cancer, and is closely related to various pathophysiological characteristics of a cancer, such as malignant phenotypes, and promotes cancer cells to adapt to tumor microenvironment. Therapeutic modalities targeting protein acetylation are a potential therapeutic strategy. This article discussed the roles of protein acetylation in tumor pathology and therapeutic drugs targeting protein acetylation, which offers the contributions of protein acetylation in clarification of carcinogenesis, and discovery of therapeutic drugs for cancers, and lays the foundation for precision medicine in oncology.
Collapse
Affiliation(s)
- Jingru Yang
- Shandong Key Laboratory of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
- Medical Science and Technology Innovation Center, Shandong First Medical University, Jinan, China
| | - Cong Song
- Medical Science and Technology Innovation Center, Shandong First Medical University, Jinan, China
| | - Xianquan Zhan
- Shandong Key Laboratory of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
- Medical Science and Technology Innovation Center, Shandong First Medical University, Jinan, China
- *Correspondence: Xianquan Zhan,
| |
Collapse
|
16
|
Tao M, Wu X. The role of patient-derived ovarian cancer organoids in the study of PARP inhibitors sensitivity and resistance: from genomic analysis to functional testing. J Exp Clin Cancer Res 2021; 40:338. [PMID: 34702316 PMCID: PMC8547054 DOI: 10.1186/s13046-021-02139-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Accepted: 10/12/2021] [Indexed: 12/23/2022] Open
Abstract
Epithelial ovarian cancer (EOC) harbors distinct genetic features such as homologous recombination repair (HRR) deficiency, and therefore may respond to poly ADP-ribose polymerase inhibitors (PARPi). Over the past few years, PARPi have been added to the standard of care for EOC patients in both front-line and recurrent settings. Next-generation sequencing (NGS) genomic analysis provides key information, allowing for the prediction of PARPi response in patients who are PARPi naïve. However, there are indeed some limitations in NGS analyses. A subset of patients can benefit from PARPi, despite the failed detection of the predictive biomarkers such as BRCA1/2 mutations or HRR deficiency. Moreover, in the recurrent setting, the sequencing of initial tumor does not allow for the detection of reversions or secondary mutations restoring proficient HRR and thus leading to PARPi resistance. Therefore, it becomes crucial to better screen patients who will likely benefit from PARPi treatment, especially those with prior receipt of maintenance PARPi therapy. Recently, patient-derived organoids (PDOs) have been regarded as a reliable preclinical platform with clonal heterogeneity and genetic features of original tumors. PDOs are found feasible for functional testing and interrogation of biomarkers for predicting response to PARPi in EOC. Hence, we review the strengths and limitations of various predictive biomarkers and highlight the role of patient-derived ovarian cancer organoids as functional assays in the study of PARPi response. It was found that a combination of NGS and functional assays using PDOs could enhance the efficient screening of EOC patients suitable for PARPi, thus prolonging their survival time.
Collapse
Affiliation(s)
- Mengyu Tao
- Department of Gynecology and Obstetrics, Shanghai Key Laboratory of Gynecology Oncology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, 160 Pu Jian Road, Shanghai, 200127, People's Republic of China
- Shanghai Key Laboratory of Gynecologic Oncology, Shanghai, 200127, People's Republic of China
| | - Xia Wu
- Department of Gynecology and Obstetrics, Shanghai Key Laboratory of Gynecology Oncology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, 160 Pu Jian Road, Shanghai, 200127, People's Republic of China.
- Shanghai Key Laboratory of Gynecologic Oncology, Shanghai, 200127, People's Republic of China.
| |
Collapse
|
17
|
Wong OGW, Li J, Cheung ANY. Targeting DNA Damage Response Pathway in Ovarian Clear Cell Carcinoma. Front Oncol 2021; 11:666815. [PMID: 34737943 PMCID: PMC8560708 DOI: 10.3389/fonc.2021.666815] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Accepted: 09/08/2021] [Indexed: 12/24/2022] Open
Abstract
Ovarian clear cell carcinoma (OCCC) is one of the major types of ovarian cancer and is of higher relative prevalence in Asians. It also shows higher possibility of resistance to cisplatin-based chemotherapy leading to poor prognosis. This may be attributed to the relative lack of mutations and aberrations in homologous recombination-associated genes, which are crucial in DNA damage response (DDR), such as BRCA1, BRCA2, p53, RAD51, and genes in the Fanconi anemia pathway. On the other hand, OCCC is characterized by a number of genetic defects rendering it vulnerable to DDR-targeting therapy, which is emerging as a potent treatment strategy for various cancer types. Mutations of ARID1A, PIK3CA, PTEN, and catenin beta 1 (CTNNB1), as well as overexpression of transcription factor hepatocyte nuclear factor-1β (HNF-1β), and microsatellite instability are common in OCCC. Of particular note is the loss-of-function mutations in ARID1A, which is found in approximately 50% of OCCC. ARID1A is crucial for processing of DNA double-strand break (DSB) and for sustaining DNA damage signaling, rendering ARID1A-deficient cells prone to impaired DNA damage checkpoint regulation and hence sensitive to poly ADP ribose polymerase (PARP) inhibitors. However, while preclinical studies have demonstrated the possibility to exploit DDR deficiency in OCCC for therapeutic purpose, progress in clinical application is lagging. In this review, we will recapitulate the preclinical studies supporting the potential of DDR targeting in OCCC treatment, with emphasis on the role of ARID1A in DDR. Companion diagnostic tests (CDx) for predicting susceptibility to PARP inhibitors are rapidly being developed for solid tumors including ovarian cancers and may readily be applicable on OCCC. The potential of various available DDR-targeting drugs for treating OCCC by drawing analogies with other solid tumors sharing similar genetic characteristics with OCCC will also be discussed.
Collapse
|
18
|
Takahashi K, Takenaka M, Okamoto A, Bowtell DDL, Kohno T. Treatment Strategies for ARID1A-Deficient Ovarian Clear Cell Carcinoma. Cancers (Basel) 2021; 13:1769. [PMID: 33917230 PMCID: PMC8068058 DOI: 10.3390/cancers13081769] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Revised: 03/27/2021] [Accepted: 03/31/2021] [Indexed: 02/06/2023] Open
Abstract
Ovarian clear cell carcinoma (OCCC) is a histological subtype of ovarian cancer that is more frequent in Asian countries (~25% of ovarian cancers) than in US/European countries (less than 10%). OCCC is refractory to conventional platinum-based chemotherapy, which is effective against high-grade serous carcinoma (HGSC), a major histological subtype of ovarian cancer. Notably, deleterious mutations in SWI/SNF chromatin remodeling genes, such as ARID1A, are common in OCCC but rare in HGSC. Because this complex regulates multiple cellular processes, including transcription and DNA repair, molecularly targeted therapies that exploit the consequences of SWI/SNF deficiency may have clinical efficacy against OCCC. Three such strategies have been proposed to date: prioritizing a gemcitabine-based chemotherapeutic regimen, synthetic lethal therapy targeting vulnerabilities conferred by SWI/SNF deficiency, and immune checkpoint blockade therapy that exploits the high mutational burden of ARID1A-deficient tumor. Thus, ARID1A deficiency has potential as a biomarker for precision medicine of ovarian cancer.
Collapse
Affiliation(s)
- Kazuaki Takahashi
- Department of Obstetrics and Gynecology, Jikei University School of Medicine, Tokyo 105-8461, Japan; (K.T.); (M.T.); (A.O.)
- Peter MacCallum Cancer Centre, Melbourne, VIC 3000, Australia;
- Division of Genome Biology, National Cancer Center Research Institute, Tokyo 104-0045, Japan
| | - Masataka Takenaka
- Department of Obstetrics and Gynecology, Jikei University School of Medicine, Tokyo 105-8461, Japan; (K.T.); (M.T.); (A.O.)
| | - Aikou Okamoto
- Department of Obstetrics and Gynecology, Jikei University School of Medicine, Tokyo 105-8461, Japan; (K.T.); (M.T.); (A.O.)
| | - David D. L. Bowtell
- Peter MacCallum Cancer Centre, Melbourne, VIC 3000, Australia;
- Sir Peter MacCallum Department of Oncology, The University of Melbourne, Parkville, VIC 3010, Australia
| | - Takashi Kohno
- Division of Genome Biology, National Cancer Center Research Institute, Tokyo 104-0045, Japan
| |
Collapse
|
19
|
Dholakia J, Scalise C, Arend RC. Assessing Preclinical Research Models for Immunotherapy for Gynecologic Malignancies. Cancers (Basel) 2021; 13:1694. [PMID: 33918476 PMCID: PMC8038292 DOI: 10.3390/cancers13071694] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 03/26/2021] [Accepted: 03/31/2021] [Indexed: 12/21/2022] Open
Abstract
Gynecologic malignancies are increasing in incidence, with a plateau in clinical outcomes necessitating novel treatment options. Immunotherapy and modulation of the tumor microenvironment are rapidly developing fields of interest in gynecologic oncology translational research; examples include the PD-1 (programmed cell death 1) and CTLA-4 (cytotoxic T-lymphocyte-associated protein 4) axes and the Wnt pathway. However, clinical successes with these agents have been modest and lag behind immunotherapy successes in other malignancies. A thorough contextualization of preclinical models utilized in gynecologic oncology immunotherapy research is necessary in order to effectively and efficiently develop translational medicine. These include murine models, in vitro assays, and three-dimensional human-tissue-based systems. Here, we provide a comprehensive review of preclinical models for immunotherapy in gynecologic malignancies, including benefits and limitations of each, in order to inform study design and translational research models. Improved model design and implementation will optimize preclinical research efficiency and increase the translational value to positive findings, facilitating novel treatments that improve patient outcomes.
Collapse
Affiliation(s)
| | | | - Rebecca C. Arend
- Department of Obstetrics and Gynecology, University of Alabama at Birmingham, Birmingham, AL 35294, USA; (J.D.); (C.S.)
| |
Collapse
|