1
|
Mihanfar A, Asghari F, Majidinia M. Ataxia telangiectasia and Rad3-related (ATR) inhibition by VE-822 potently reversed 5-flourouracil resistance in colorectal cancer cells through targeting DNA damage response. Mol Biol Rep 2024; 51:474. [PMID: 38553623 DOI: 10.1007/s11033-024-09431-7] [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] [Received: 02/05/2024] [Accepted: 03/08/2024] [Indexed: 04/02/2024]
Abstract
BACKGROUND VE-822 is a novel inhibitor of ATR, a key kinase involved in the DNA damage response pathway. The role of ATR inhibition in reversing drug resistance in various cancer types has been investigated. Therefore, this study investigated the effects of ATR inhibition by VE-822 on reversing 5-fluorouracil (5-FU) resistance in colorectal cancer cell line (Caco-2). METHODS Caco-2 and 5-FU resistance Caco-2 (Caco-2/5-FU) cells were treated with 5-FU and VE-822, alone and in combination. Cell proliferation and viability were assessed by MTT assay and Trypan Blue staining. P-glycoprotein (P-gp) and multidrug resistance-associated protein 1 (MRP1) activities were measured by Rhodamine123 accumulation and uptake assay. The mRNA levels of P-gp, MRP-1, ataxia telangiectasia and Rad3-related (ATR) and checkpoint kinase 1 (CHK1) were measured by qRT-PCR. Western blot was used to measure the protein levels of P-gp, MRP-1, γ-H2AX, ATR and CHK1 in cells. 8-Oxo-2'-deoxyguanosine (8-oxo-dG) levels were determined via ELISA. Apoptosis was evaluated by ELISA death assay, DAPI staining and lactate dehydrogenase (LDH) assay. RESULTS The Caco-2/5-FU cells showed lower levels of 5-FU mediated proliferation inhibition in comparison to Caco-2 cells. VE-822 decreased the IC50 value of 5-FU on resistant cells. In addition, the expression levels and activity of P-gp and MRP-1 were significantly decreased in resistant cells treated with VE-822 (P < 0.05). The combination of 5-FU and VE-822 increased apoptosis in Caco-2/5-FU cells by downregulating CHK1 and ATR and upregulating γ-H2AX and 8-oxo-dG. CONCLUSION The simultaneous treatment of resistant colorectal cancer cells with 5-FU and ATR inhibitor, VE-822, was demonstrated to be effective in reversing drug resistance and potentiating 5-FU mediated anticancer effects via targeting DNA damage.
Collapse
Affiliation(s)
- Ainaz Mihanfar
- Solid Tumor Research Center, Cellular and Molecular Medicine Institute, Urmia University of Medical Sciences, Urmia, Iran
| | - Faezeh Asghari
- Immunology Department, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Maryam Majidinia
- Solid Tumor Research Center, Cellular and Molecular Medicine Institute, Urmia University of Medical Sciences, Urmia, Iran.
| |
Collapse
|
2
|
Chiappa M, Guffanti F, Grasselli C, Panini N, Corbelli A, Fiordaliso F, Damia G. Different Patterns of Platinum Resistance in Ovarian Cancer Cells with Homologous Recombination Proficient and Deficient Background. Int J Mol Sci 2024; 25:3049. [PMID: 38474294 DOI: 10.3390/ijms25053049] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Revised: 02/23/2024] [Accepted: 02/26/2024] [Indexed: 03/14/2024] Open
Abstract
Platinum compounds are very active in first-line treatments of ovarian carcinoma. In fact, high rates of complete remission are achieved, but most patients eventually relapse with resistant disease. Many mechanisms underlying the platinum-resistant phenotype have been reported. However, there are no data in the same isogenic cell system proficient and deficient in homologous recombination (HR) on platinum-acquired resistance that might unequivocally clarify the most important mechanism associated with resistance. We generated and characterized cisplatin (DDP)-resistant murine ovarian ID8 cell lines in a HR-deficient and -proficient background. Specific upregulation of the NER pathway in the HR-proficient and -resistant cells and partial restoration of HR in Brca1-/--resistant cells were found. Combinations of different inhibitors of the DNA damage response pathways with cisplatin were strongly active in both resistant and parental cells. The data from the ID8 isogenic system are in line with current experimental and clinical evidence and strongly suggest that platinum resistance develops in different ways depending on the cell DNA repair status (i.e., HR-proficient or HR-deficient), and the upregulation and/or restoration of repair pathways are major determinants of DDP resistance.
Collapse
Affiliation(s)
- Michela Chiappa
- Department of Experimental Oncology, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Via M. Negri 2, 20156 Milan, Italy
| | - Federica Guffanti
- Department of Experimental Oncology, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Via M. Negri 2, 20156 Milan, Italy
| | - Chiara Grasselli
- Department of Experimental Oncology, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Via M. Negri 2, 20156 Milan, Italy
| | - Nicolò Panini
- Department of Experimental Oncology, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Via M. Negri 2, 20156 Milan, Italy
| | - Alessandro Corbelli
- Department of Biochemistry and Molecular Pharmacology, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Via M. Negri 2, 20156 Milan, Italy
| | - Fabio Fiordaliso
- Department of Biochemistry and Molecular Pharmacology, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Via M. Negri 2, 20156 Milan, Italy
| | - Giovanna Damia
- Department of Experimental Oncology, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Via M. Negri 2, 20156 Milan, Italy
| |
Collapse
|
3
|
Alfayomy AM, Ashry R, Kansy AG, Sarnow AC, Erdmann F, Schmidt M, Krämer OH, Sippl W. Design, synthesis, and biological characterization of proteolysis targeting chimera (PROTACs) for the ataxia telangiectasia and RAD3-related (ATR) kinase. Eur J Med Chem 2024; 267:116167. [PMID: 38308949 DOI: 10.1016/j.ejmech.2024.116167] [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] [Received: 11/09/2023] [Revised: 01/12/2024] [Accepted: 01/21/2024] [Indexed: 02/05/2024]
Abstract
The Ataxia telangiectasia and RAD3-related (ATR) kinase is a key regulator of DNA replication stress responses and DNA-damage checkpoints. Several potent and selective ATR inhibitors are reported and four of them are currently in clinical trials in combination with radio- or chemotherapy. Based on the idea of degrading target proteins rather than inhibiting them, we designed, synthesized and biologically characterized a library of ATR-targeted proteolysis targeting chimera (PROTACs). Among the synthesized compounds, the lenalidomide-based PROTAC 42i was the most promising. In pancreatic and cervix cancer cells cancer cells, it reduced ATR to 40 % of the levels in untreated cells. 42i selectively degraded ATR through the proteasome, dependent on the E3 ubiquitin ligase component cereblon, and without affecting the associated kinases ATM and DNA-PKcs. 42i may be a promising candidate for further optimization and biological characterization in various cancer cells.
Collapse
Affiliation(s)
- Abdallah M Alfayomy
- Department of Medicinal Chemistry, Institute of Pharmacy, Martin-Luther-University of Halle-Wittenberg, 06120, Halle (Saale), Germany; Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Al-Azhar University, Assiut, 71524, Egypt
| | - Ramy Ashry
- Department of Toxicology, University Medical Center, Johannes Gutenberg-University Mainz, 55131, Mainz, Germany; Department of Oral Pathology, Faculty of Dentistry, Mansoura University, Mansoura, 35516, Egypt
| | - Anita G Kansy
- Department of Toxicology, University Medical Center, Johannes Gutenberg-University Mainz, 55131, Mainz, Germany
| | - Anne-Christin Sarnow
- Department of Medicinal Chemistry, Institute of Pharmacy, Martin-Luther-University of Halle-Wittenberg, 06120, Halle (Saale), Germany
| | - Frank Erdmann
- Department of Medicinal Chemistry, Institute of Pharmacy, Martin-Luther-University of Halle-Wittenberg, 06120, Halle (Saale), Germany
| | - Matthias Schmidt
- Department of Medicinal Chemistry, Institute of Pharmacy, Martin-Luther-University of Halle-Wittenberg, 06120, Halle (Saale), Germany
| | - Oliver H Krämer
- Department of Toxicology, University Medical Center, Johannes Gutenberg-University Mainz, 55131, Mainz, Germany.
| | - Wolfgang Sippl
- Department of Medicinal Chemistry, Institute of Pharmacy, Martin-Luther-University of Halle-Wittenberg, 06120, Halle (Saale), Germany.
| |
Collapse
|
4
|
Liu W, Feng W, Zhang Y, Lei T, Wang X, Qiao T, Chen Z, Song W. RP11-789C1.1 inhibits gastric cancer cell proliferation and accelerates apoptosis via the ATR/CHK1 signaling pathway. Chin Med J (Engl) 2023:00029330-990000000-00827. [PMID: 37882063 DOI: 10.1097/cm9.0000000000002869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Indexed: 10/27/2023] Open
Abstract
BACKGROUND Long non-coding RNAs (lncRNAs) plays an important role in the progression of gastric cancer (GC). Their involvement ranges from genetic regulation to cancer progression. However, the mechanistic roles of RP11-789C1.1 in GC are not fully understood. METHODS We identified the expression of lncRNA RP11-789C1.1 in GC tissues and cell lines by real-time fluorescent quantitative polymerase chain reaction. A series of functional experiments revealed the effect of RP11-789C1.1 on the proliferation of GC cells. In vivo experiments verified the effect of RP11-789C1.1 on the biological behavior of a GC cell line. RNA pull-down unveiled RP11-789C1.1 interacting proteins. Western blot analysis indicated the downstream pathway changes of RP11-789C1.1, and an oxaliplatin dosing experiment disclosed the influence of RP11-789C1.1 on the drug sensitivity of oxaliplatin. RESULTS Our results demonstrated that RP11-789C1.1 inhibited the proliferation of GC cells and promoted the apoptosis of GC cells. Mechanistically, RP11-789C1.1 inhibited checkpoint kinase 1 (CHK1) phosphorylation by binding ataxia-telangiectasia mutated and Rad3 related (ATR), a serine/threonine-specific protein kinase, promoted GC apoptosis, and mediated oxaliplatin sensitivity. CONCLUSION In general, we discovered a tumor suppressor molecule RP11-789C1.1 and confirmed its mechanism of action, providing a theoretical basis for targeted GC therapy.
Collapse
Affiliation(s)
- Wenwei Liu
- Digestive Diseases Center, The Seventh Affiliated Hospital of Sun Yat-sen University, Shenzhen, Guangdong 518000, China
| | - Wei Feng
- Department of Gastrointestinal Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510080, China
- Laboratory of General Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510080, China
| | - Yongxin Zhang
- Department of Gastrointestinal Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510080, China
| | - Tianxiang Lei
- Department of Gastrointestinal Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510080, China
- Laboratory of General Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510080, China
| | - Xiaofeng Wang
- Department of Gastrointestinal Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510080, China
- Laboratory of General Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510080, China
| | - Tang Qiao
- Department of Gastrointestinal Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510080, China
- Laboratory of General Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510080, China
| | - Zehong Chen
- Department of Gastrointestinal Surgery, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong 510630, China
| | - Wu Song
- Department of Gastrointestinal Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510080, China
| |
Collapse
|
5
|
Ao W, Kim HI, Tommarello D, Conrads KA, Hood BL, Litzi T, Abulez T, Teng PN, Dalgard CL, Zhang X, Wilkerson MD, Darcy KM, Tarney CM, Phippen NT, Bakkenist CJ, Maxwell GL, Conrads TP, Risinger JI, Bateman NW. Metronomic dosing of ovarian cancer cells with the ATR inhibitor AZD6738 leads to loss of CDC25A expression and resistance to ATRi treatment. Gynecol Oncol 2023; 177:60-71. [PMID: 37639904 DOI: 10.1016/j.ygyno.2023.08.004] [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] [Received: 04/16/2023] [Revised: 08/07/2023] [Accepted: 08/13/2023] [Indexed: 08/31/2023]
Abstract
OBJECTIVE ATR kinase inhibitors promote cell killing by inducing replication stress and through potentiation of genotoxic agents in gynecologic cancer cells. To explore mechanisms of acquired resistance to ATRi in ovarian cancer, we characterized ATRi-resistant ovarian cancer cells generated by metronomic dosing with the clinical ATR inhibitor AZD6738. METHODS ATRi-resistant ovarian cancer cells (OVCAR3 and OV90) were generated by dosing with AZD6738 and assessed for sensitivity to Chk1i (LY2603618), PARPi (Olaparib) and combination with cisplatin or a CDK4/6 inhibitor (Palbociclib). Models were characterized by diverse methods including silencing CDC25A in OV90 cells and assessing impact on ATRi response. Serum proteomic analysis of ATRi-resistant OV90 xenografts was performed to identify circulating biomarker candidates of ATRi-resistance. RESULTS AZD6738-resistant cell lines are refractory to LY2603618, but not to Olaparib or combinations with cisplatin. Cell cycle analyses showed ATRi-resistant cells exhibit G1/S arrest following AZD6738 treatment. Accordingly, combination with Palbociclib confers resistance to AZD6738. AZD6738-resistant cells exhibit altered abundances of G1/S phase regulatory proteins, including loss of CDC25A in AZD6738-resistant OV90 cells. Silencing of CDC25A in OV90 cells confers resistance to AZD6738. Serum proteomics from AZD6738-resistant OV90 xenografts identified Vitamin D-Binding Protein (GC), Apolipoprotein E (APOE) and A1 (APOA1) as significantly elevated in AZD6738-resistant backgrounds. CONCLUSIONS We show that metronomic dosing of ovarian cancer cells with AZD6738 results in resistance to ATR/ Chk1 inhibitors, that loss of CDC25A expression represents a mechanism of resistance to ATRi treatment in ovarian cancer cells and identify several circulating biomarker candidates of CDC25A low, AZD6738-resistant ovarian cancer cells.
Collapse
Affiliation(s)
- Wei Ao
- Gynecologic Cancer Center of Excellence, Department of Gynecologic Surgery and Obstetrics, Uniformed Services University and Walter Reed National Military Medical Center, 8901 Wisconsin Avenue, Bethesda 20889, MD, USA; Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc. Bethesda, MD 20817, USA
| | - Hong Im Kim
- Department of Obstetrics, Gynecology and Reproductive Biology, College of Human Medicine, Michigan State University Grand Rapids, MI, USA
| | - Domenic Tommarello
- Gynecologic Cancer Center of Excellence, Department of Gynecologic Surgery and Obstetrics, Uniformed Services University and Walter Reed National Military Medical Center, 8901 Wisconsin Avenue, Bethesda 20889, MD, USA; Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc. Bethesda, MD 20817, USA
| | - Kelly A Conrads
- Gynecologic Cancer Center of Excellence, Department of Gynecologic Surgery and Obstetrics, Uniformed Services University and Walter Reed National Military Medical Center, 8901 Wisconsin Avenue, Bethesda 20889, MD, USA; Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc. Bethesda, MD 20817, USA
| | - Brian L Hood
- Gynecologic Cancer Center of Excellence, Department of Gynecologic Surgery and Obstetrics, Uniformed Services University and Walter Reed National Military Medical Center, 8901 Wisconsin Avenue, Bethesda 20889, MD, USA; Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc. Bethesda, MD 20817, USA
| | - Tracy Litzi
- Gynecologic Cancer Center of Excellence, Department of Gynecologic Surgery and Obstetrics, Uniformed Services University and Walter Reed National Military Medical Center, 8901 Wisconsin Avenue, Bethesda 20889, MD, USA; Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc. Bethesda, MD 20817, USA
| | - Tamara Abulez
- Gynecologic Cancer Center of Excellence, Department of Gynecologic Surgery and Obstetrics, Uniformed Services University and Walter Reed National Military Medical Center, 8901 Wisconsin Avenue, Bethesda 20889, MD, USA; Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc. Bethesda, MD 20817, USA
| | - Pang-Ning Teng
- Gynecologic Cancer Center of Excellence, Department of Gynecologic Surgery and Obstetrics, Uniformed Services University and Walter Reed National Military Medical Center, 8901 Wisconsin Avenue, Bethesda 20889, MD, USA; Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc. Bethesda, MD 20817, USA
| | - Clifton L Dalgard
- The American Genome Center, Department of Anatomy Physiology and Genetics, Collaborative Health Initiative Research Program, Uniformed Services University, 4301 Jones Bridge Road, Bethesda, MD 20814, USA
| | - Xijun Zhang
- The American Genome Center, Department of Anatomy Physiology and Genetics, Collaborative Health Initiative Research Program, Uniformed Services University, 4301 Jones Bridge Road, Bethesda, MD 20814, USA
| | - Matthew D Wilkerson
- The American Genome Center, Department of Anatomy Physiology and Genetics, Collaborative Health Initiative Research Program, Uniformed Services University, 4301 Jones Bridge Road, Bethesda, MD 20814, USA
| | - Kathleen M Darcy
- Gynecologic Cancer Center of Excellence, Department of Gynecologic Surgery and Obstetrics, Uniformed Services University and Walter Reed National Military Medical Center, 8901 Wisconsin Avenue, Bethesda 20889, MD, USA; Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc. Bethesda, MD 20817, USA; The John P. Murtha Cancer Center, Uniformed Services University and Walter Reed National Military Medical Center, 8901 Wisconsin Avenue, Bethesda 20889, MD, USA
| | - Christopher M Tarney
- Gynecologic Cancer Center of Excellence, Department of Gynecologic Surgery and Obstetrics, Uniformed Services University and Walter Reed National Military Medical Center, 8901 Wisconsin Avenue, Bethesda 20889, MD, USA; The John P. Murtha Cancer Center, Uniformed Services University and Walter Reed National Military Medical Center, 8901 Wisconsin Avenue, Bethesda 20889, MD, USA
| | - Neil T Phippen
- Gynecologic Cancer Center of Excellence, Department of Gynecologic Surgery and Obstetrics, Uniformed Services University and Walter Reed National Military Medical Center, 8901 Wisconsin Avenue, Bethesda 20889, MD, USA; The John P. Murtha Cancer Center, Uniformed Services University and Walter Reed National Military Medical Center, 8901 Wisconsin Avenue, Bethesda 20889, MD, USA
| | - Christopher J Bakkenist
- Departments of Radiation Biology and Pharmacology and Chemical Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261, USA
| | - G Larry Maxwell
- Gynecologic Cancer Center of Excellence, Department of Gynecologic Surgery and Obstetrics, Uniformed Services University and Walter Reed National Military Medical Center, 8901 Wisconsin Avenue, Bethesda 20889, MD, USA; The John P. Murtha Cancer Center, Uniformed Services University and Walter Reed National Military Medical Center, 8901 Wisconsin Avenue, Bethesda 20889, MD, USA; Department of Obstetrics and Gynecology, Inova Fairfax Medical Campus, 3300 Gallows Rd. Falls Church, VA 22042, USA
| | - Thomas P Conrads
- Gynecologic Cancer Center of Excellence, Department of Gynecologic Surgery and Obstetrics, Uniformed Services University and Walter Reed National Military Medical Center, 8901 Wisconsin Avenue, Bethesda 20889, MD, USA; The John P. Murtha Cancer Center, Uniformed Services University and Walter Reed National Military Medical Center, 8901 Wisconsin Avenue, Bethesda 20889, MD, USA; Department of Obstetrics and Gynecology, Inova Fairfax Medical Campus, 3300 Gallows Rd. Falls Church, VA 22042, USA
| | - John I Risinger
- Department of Obstetrics, Gynecology and Reproductive Biology, College of Human Medicine, Michigan State University Grand Rapids, MI, USA
| | - Nicholas W Bateman
- Gynecologic Cancer Center of Excellence, Department of Gynecologic Surgery and Obstetrics, Uniformed Services University and Walter Reed National Military Medical Center, 8901 Wisconsin Avenue, Bethesda 20889, MD, USA; Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc. Bethesda, MD 20817, USA; The John P. Murtha Cancer Center, Uniformed Services University and Walter Reed National Military Medical Center, 8901 Wisconsin Avenue, Bethesda 20889, MD, USA.
| |
Collapse
|
6
|
Su H, Yuan Y, Tang J, Zhang Y, Wu H, Zhang Y, Liang J, Wang L, Zou X, Huang S, Zhang S, Lv Y. The ATR inhibitor VE-821 increases the sensitivity of gastric cancer cells to cisplatin. Transl Oncol 2023; 36:101743. [PMID: 37517142 PMCID: PMC10400920 DOI: 10.1016/j.tranon.2023.101743] [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] [Received: 01/28/2023] [Revised: 07/14/2023] [Accepted: 07/16/2023] [Indexed: 08/01/2023] Open
Abstract
BACKGROUND Chemoresistance is a common event after cancer chemotherapy, including gastric cancer (GC). Cisplatin has been reported to induce the DNA damage response (DDR), thus leading to chemoresistance. VE-821, a specific inhibitor of ATR, has been proven to suppress a variety of solid malignancies effectively. Our study aimed to explore the effect of VE-821 on enhancing the chemical sensitivity to cisplatin and clarify the potential molecular mechanisms. METHODS Cell viability and apoptosis of MKN-45 and AGS were measured by CCK8 and flow cytometry assay respectively. Western blotting was used to detect the expression of target proteins. TCGA database was used to analyze the correlation between the ATR expression with the prognosis of GC patients. The viability of GC organoids was detected by Cell Titer Glo (CTG) through luminescence. RESULTS Cisplatin inhibited the proliferation and induced apoptosis of GC cells with a relatively high IC50 value, and increased the phosphorylation levels of ATR-CHK1 and H2AX. VE-821 achieved the same effects but by downregulating the phosphorylation levels of the ATR-CHK1 pathway. Besides, higher ATR expression in GC tissues was positively correlated with higher pathological stage in GC patients. Interestingly, ATR inhibition reversed cisplatin-induced STAT3 activation and enhanced H2AX levels. Moreover, VE-821 significantly sensitized GC cells to cisplatin, and these two drugs had synergistic effects in GC cell lines, organoids, and in vivo. CONCLUSION Our results suggested VE-821 sensitized GC cells to cisplatin via reversing DDR activation. And VE-821 treatment may be a promising therapeutic strategy for GC patients with cisplatin resistance.
Collapse
Affiliation(s)
- Haochen Su
- Department of Gastroenterology, Nanjing Drum Tower Hospital Clinical College of Nanjing Medical University, No. 321 Zhongshan Road, Nanjing, Jiangsu 210008, PR China; Institute of Pancreatology, Nanjing University, Nanjing, Jiangsu 210008, PR China
| | - Yue Yuan
- Department of Gastroenterology, Nanjing Drum Tower Hospital Clinical College of Nanjing Medical University, No. 321 Zhongshan Road, Nanjing, Jiangsu 210008, PR China; Department of Gastroenterology, The Third People's Hospital of Yancheng, Yancheng, Jiangsu 224000, PR China
| | - Jiatong Tang
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, Jiangsu 210008, PR China
| | - Yixuan Zhang
- Institute of Pancreatology, Nanjing University, Nanjing, Jiangsu 210008, PR China; Department of Gastroenterology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, No. 321 Zhongshan Road, Nanjing, Jiangsu 210008, PR China
| | - Hao Wu
- Institute of Pancreatology, Nanjing University, Nanjing, Jiangsu 210008, PR China; Department of Gastroenterology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, No. 321 Zhongshan Road, Nanjing, Jiangsu 210008, PR China
| | - Yin Zhang
- Institute of Pancreatology, Nanjing University, Nanjing, Jiangsu 210008, PR China; Department of Gastroenterology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, No. 321 Zhongshan Road, Nanjing, Jiangsu 210008, PR China
| | - Jiawei Liang
- Institute of Pancreatology, Nanjing University, Nanjing, Jiangsu 210008, PR China; Department of Gastroenterology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, No. 321 Zhongshan Road, Nanjing, Jiangsu 210008, PR China
| | - Lei Wang
- Institute of Pancreatology, Nanjing University, Nanjing, Jiangsu 210008, PR China; Department of Gastroenterology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, No. 321 Zhongshan Road, Nanjing, Jiangsu 210008, PR China
| | - Xiaoping Zou
- Institute of Pancreatology, Nanjing University, Nanjing, Jiangsu 210008, PR China; Department of Gastroenterology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, No. 321 Zhongshan Road, Nanjing, Jiangsu 210008, PR China
| | - Shuling Huang
- Institute of Pancreatology, Nanjing University, Nanjing, Jiangsu 210008, PR China; Department of Gastroenterology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, No. 321 Zhongshan Road, Nanjing, Jiangsu 210008, PR China
| | - Shu Zhang
- Department of Gastroenterology, Nanjing Drum Tower Hospital Clinical College of Nanjing Medical University, No. 321 Zhongshan Road, Nanjing, Jiangsu 210008, PR China; Institute of Pancreatology, Nanjing University, Nanjing, Jiangsu 210008, PR China; Department of Gastroenterology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, No. 321 Zhongshan Road, Nanjing, Jiangsu 210008, PR China.
| | - Ying Lv
- Department of Gastroenterology, Nanjing Drum Tower Hospital Clinical College of Nanjing Medical University, No. 321 Zhongshan Road, Nanjing, Jiangsu 210008, PR China; Institute of Pancreatology, Nanjing University, Nanjing, Jiangsu 210008, PR China; Department of Gastroenterology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, No. 321 Zhongshan Road, Nanjing, Jiangsu 210008, PR China.
| |
Collapse
|
7
|
Parvez A, Mahjabeen I, Mehmood A, Khan AU, Nisar A, Kayani MA. Expression variations of DNA damage response genes ATM and ATR in blood cancer patients. Mol Genet Genomics 2023; 298:1173-1183. [PMID: 37338595 DOI: 10.1007/s00438-023-02043-z] [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] [Received: 08/15/2022] [Accepted: 06/04/2023] [Indexed: 06/21/2023]
Abstract
Hematological malignancies (HM) constitute a variety of cancers originating in blood, bone marrow (BM), and lymphatic systems. During the last two decades, the incidence of HM has dramatically increased worldwide. The etiology of HM is still debatable. Genetic instability is a major risk factor for HM. DDR network is a complex signal transduction cellular machinery that detects DNA damage and activates cellular repair factors, thus maintaining genomic integrity. DDR network detects a variety of DNA damage and triggers the activation of cell cycle control, DNA repair, senescence, and apoptosis. Among the DNA repairing pathways, the DNA damage response (DDR) pathway includes DNA damage signaling apparatus such as ATM and ATR genes. ATM tends to detect double-strand breaks (DSBs) while ATR detects single-strand DNA (ssDNA). The study was conducted to observe the expression deregulations of DNA damage response (DDR) pathway genes (ATM, ATR) at mRNA level in 200 blood cancer patients and 200 controls. The real-time PCR was used to analyze the expression of the target genes. The expression results showed statistically significant downregulation of ATM (p < 0.0001) and ATR (p < 0.0001) genes in blood cancer patients vs. controls. Moreover, a significant downregulation of ATM (p < 0.0001) and ATR (p < 0.0001) was obtained in chemotherapy-treated patients vs. healthy controls. The results suggest that dysregulation in ATM and ATR genes may be associated with increased blood cancer risk.
Collapse
Affiliation(s)
- Aamir Parvez
- Cancer Genetics and Epigenetics Laboratory, Department of Biosciences, COMSATS University Islamabad, Park Road Tarlai Kalan, Islamabad, Pakistan
| | - Ishrat Mahjabeen
- Cancer Genetics and Epigenetics Laboratory, Department of Biosciences, COMSATS University Islamabad, Park Road Tarlai Kalan, Islamabad, Pakistan
| | - Azhar Mehmood
- Cancer Genetics and Epigenetics Laboratory, Department of Biosciences, COMSATS University Islamabad, Park Road Tarlai Kalan, Islamabad, Pakistan
| | - Asad Ullah Khan
- Cancer Genetics and Epigenetics Laboratory, Department of Biosciences, COMSATS University Islamabad, Park Road Tarlai Kalan, Islamabad, Pakistan
| | - Asif Nisar
- Cancer Genetics and Epigenetics Laboratory, Department of Biosciences, COMSATS University Islamabad, Park Road Tarlai Kalan, Islamabad, Pakistan
| | - Mahmood Akhtar Kayani
- Cancer Genetics and Epigenetics Laboratory, Department of Biosciences, COMSATS University Islamabad, Park Road Tarlai Kalan, Islamabad, Pakistan.
| |
Collapse
|
8
|
Dexheimer TS, Coussens NP, Silvers T, Wright J, Morris J, Doroshow JH, Teicher BA. Multicellular Complex Tumor Spheroid Response to DNA Repair Inhibitors in Combination with DNA-damaging Drugs. Cancer Res Commun 2023; 3:1648-1661. [PMID: 37637936 PMCID: PMC10452929 DOI: 10.1158/2767-9764.crc-23-0193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 06/20/2023] [Accepted: 07/25/2023] [Indexed: 08/29/2023]
Abstract
Multicellular spheroids comprised of malignant cells, endothelial cells, and mesenchymal stem cells served as an in vitro model of human solid tumors to investigate the potentiation of DNA-damaging drugs by pharmacologic modulation of DNA repair pathways. The DNA-damaging drugs, topotecan, trabectedin, and temozolomide were combined with varied inhibitors of DNA damage response enzymes including PARP (olaparib or talazoparib), ATM (ataxia telangiectasia mutated; AZD-1390), ATR (ataxia telangiectasia and Rad3-related protein; berzosertib or elimusertib), and DNA-PK (DNA-dependent protein kinase; nedisertib or VX-984). A range of clinically achievable concentrations were tested up to the clinical Cmax, if known. Mechanistically, the types of DNA damage induced by temozolomide, topotecan, and trabectedin are distinct, which was apparent from the response of spheroids to combinations with various DNA repair inhibitors. Although most combinations resulted in additive cytotoxicity, synergistic activity was observed for temozolomide combined with PARP inhibitors as well as combinations of the ATM inhibitor AZD-1390 with either topotecan or trabectedin. These findings might provide guidance for the selection of anticancer agent combinations worthy of further investigation. Significance Clinical efficacy of DNA-damaging anticancer drugs can be influenced by the DNA damage response in tumor cells. The potentiation of DNA-damaging drugs by pharmacologic modulation of DNA repair pathways was assessed in multicellular tumor spheroids. Although most combinations demonstrated additive cytotoxicity, synergistic cytotoxicity was observed for several drug combinations.
Collapse
Affiliation(s)
- Thomas S Dexheimer
- Molecular Pharmacology Laboratories, Applied and Developmental Research Directorate, Frederick National Laboratory for Cancer Research, Frederick, Maryland
| | - Nathan P Coussens
- Molecular Pharmacology Laboratories, Applied and Developmental Research Directorate, Frederick National Laboratory for Cancer Research, Frederick, Maryland
| | - Thomas Silvers
- Molecular Pharmacology Laboratories, Applied and Developmental Research Directorate, Frederick National Laboratory for Cancer Research, Frederick, Maryland
| | - John Wright
- Division of Cancer Treatment and Diagnosis, NCI, Rockville, Maryland
| | - Joel Morris
- Division of Cancer Treatment and Diagnosis, NCI, Rockville, Maryland
| | - James H Doroshow
- Division of Cancer Treatment and Diagnosis, NCI, Rockville, Maryland
| | - Beverly A Teicher
- Division of Cancer Treatment and Diagnosis, NCI, Rockville, Maryland
| |
Collapse
|
9
|
Biswas H, Makinwa Y, Zou Y. Novel Cellular Functions of ATR for Therapeutic Targeting: Embryogenesis to Tumorigenesis. Int J Mol Sci 2023; 24:11684. [PMID: 37511442 PMCID: PMC10380702 DOI: 10.3390/ijms241411684] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 07/14/2023] [Accepted: 07/18/2023] [Indexed: 07/30/2023] Open
Abstract
The DNA damage response (DDR) is recognized as having an important role in cancer growth and treatment. ATR (ataxia telangiectasia mutated and Rad3-related) kinase, a major regulator of DDR, has shown significant therapeutic potential in cancer treatment. ATR inhibitors have shown anti-tumor effectiveness, not just as monotherapies but also in enhancing the effects of standard chemotherapy, radiation, and immunotherapy. The biological basis of ATR is examined in this review, as well as its functional significance in the development and therapy of cancer, and the justification for inhibiting this target as a therapeutic approach, including an assessment of the progress and status of previous decades' development of effective and selective ATR inhibitors. The current applications of these inhibitors in preclinical and clinical investigations as single medicines or in combination with chemotherapy, radiation, and immunotherapy are also fully reviewed. This review concludes with some insights into the many concerns highlighted or identified with ATR inhibitors in both the preclinical and clinical contexts, as well as potential remedies proposed.
Collapse
Affiliation(s)
| | | | - Yue Zou
- Department of Cell and Cancer Biology, College of Medicine and Life Sciences, University of Toledo, Toledo, OH 43614, USA; (H.B.); (Y.M.)
| |
Collapse
|
10
|
Zhang X, Chen X, Lu L, Fang Q, Liu C, Lin Z. Identification of small-molecule inhibitors of human MUS81-EME1/2 by FRET-based high-throughput screening. Bioorg Med Chem 2023; 90:117383. [PMID: 37352577 DOI: 10.1016/j.bmc.2023.117383] [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] [Received: 02/19/2023] [Revised: 06/09/2023] [Accepted: 06/17/2023] [Indexed: 06/25/2023]
Abstract
The MUS81-EME1/2 structure-specific endonucleases play a crucial role in the processing of stalled replication forks and recombination intermediates, and have been recognized as an attractive drug target to potentiate the anti-cancer efficacy of DNA-damaging agents. Currently, no bioactive small-molecule inhibitors of MUS81 are available. Here, we performed a high-throughput small-molecule inhibitors screening, using the FRET-based DNA cleavage assay. From 7920 compounds, we identified dyngo-4a as a potent inhibitor of MUS81 complexes. Dyngo-4a effectively inhibits the endonuclease activities of both MUS81-EME1 and MUS81-EME2 complexes, with IC50 values of 0.57 μM and 2.90 μM, respectively. Surface plasmon resonance (SPR) and electrophoretic mobility shift assay (EMSA) assays reveal that dyngo-4a directly binds to MUS81 complexes (KD ∼ 0.61 μM) and prevents them from binding to DNA substrates. In HeLa cells, dyngo-4a significantly suppresses bleomycin-triggered H2AX serine 139 phosphorylation (γH2AX). Together, our results demonstrate that dyngo-4a is a potent MUS81 inhibitor, which could be further developed as a potentially valuable chemical tool to explore more physiological roles of MUS81 in the cells.
Collapse
Affiliation(s)
- Xu Zhang
- College of Chemistry, Fuzhou University, Fuzhou 350108, China
| | - Xuening Chen
- College of Chemistry, Fuzhou University, Fuzhou 350108, China
| | - Lian Lu
- College of Chemistry, Fuzhou University, Fuzhou 350108, China
| | - Qianqian Fang
- College of Chemistry, Fuzhou University, Fuzhou 350108, China
| | - Chun Liu
- College of Biological Science and Engineering, Fuzhou University, Fuzhou 350108, China
| | - Zhonghui Lin
- College of Chemistry, Fuzhou University, Fuzhou 350108, China; Key Laboratory of Marine Enzyme Engineering, Fuzhou University, Fuzhou, China.
| |
Collapse
|
11
|
Brownlie J, Kulkarni S, Algethami M, Jeyapalan JN, Mongan NP, Rakha EA, Madhusudan S. Targeting DNA damage repair precision medicine strategies in cancer. Curr Opin Pharmacol 2023; 70:102381. [PMID: 37148685 DOI: 10.1016/j.coph.2023.102381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 03/31/2023] [Accepted: 04/04/2023] [Indexed: 05/08/2023]
Abstract
DNA repair targeted therapeutics is a promising precision medicine strategy in cancer. The development and clinical use of PARP inhibitors has transformed lives for many patients with BRCA germline deficient breast and ovarian cancer as well as platinum sensitive epithelial ovarian cancers. However, lessons learnt from the clinical use of PARP inhibitors also confirm that not all patients respond either due to intrinsic or acquired resistance. Therefore, the search for additional synthetic lethality approaches is an active area of translational and clinical research. Here, we review the current clinical state of PARP inhibitors and other evolving DNA repair targets including ATM, ATR, WEE1 inhibitors and others in cancer.
Collapse
Affiliation(s)
- Juliette Brownlie
- Nottingham Biodiscovery Institute, School of Medicine, University of Nottingham, University Park, Nottingham NG7 3RD, UK
| | - Sanat Kulkarni
- Department of Medicine, Sandwell and West Birmingham Hospitals, Lyndon, West Bromwich B71 4HJ, UK
| | - Mashael Algethami
- Nottingham Biodiscovery Institute, School of Medicine, University of Nottingham, University Park, Nottingham NG7 3RD, UK
| | - Jennie N Jeyapalan
- Nottingham Biodiscovery Institute, School of Medicine, University of Nottingham, University Park, Nottingham NG7 3RD, UK
| | - Nigel P Mongan
- Nottingham Biodiscovery Institute, School of Medicine, University of Nottingham, University Park, Nottingham NG7 3RD, UK
| | - Emad A Rakha
- Department of Pathology, Nottingham University Hospital, City Campus, Hucknall Road, Nottingham NG51PB, UK
| | - Srinivasan Madhusudan
- Nottingham Biodiscovery Institute, School of Medicine, University of Nottingham, University Park, Nottingham NG7 3RD, UK; Department of Oncology, Nottingham University Hospitals, Nottingham NG51PB, UK.
| |
Collapse
|
12
|
Heyza JR, Ekinci E, Lindquist J, Lei W, Yunker C, Vinothkumar V, Rowbotham R, Polin L, Snider N, Van Buren E, Watza D, Back J, Chen W, Mamdani H, Schwartz A, Turchi J, Bepler G, Patrick S. ATR inhibition overcomes platinum tolerance associated with ERCC1- and p53-deficiency by inducing replication catastrophe. NAR Cancer 2023; 5:zcac045. [PMID: 36644397 PMCID: PMC9832712 DOI: 10.1093/narcan/zcac045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 11/30/2022] [Accepted: 12/16/2022] [Indexed: 01/13/2023] Open
Abstract
ERCC1/XPF is a heterodimeric DNA endonuclease critical for repair of certain chemotherapeutic agents. We recently identified that ERCC1- and p53-deficient lung cancer cells are tolerant to platinum-based chemotherapy. ATR inhibition synergistically re-stored platinum sensitivity to platinum tolerant ERCC1-deficient cells. Mechanistically we show this effect is reliant upon several functions of ATR including replication fork protection and altered cell cycle checkpoints. Utilizing an inhibitor of replication protein A (RPA), we further demonstrate that replication fork protection and RPA availability are critical for platinum-based drug tolerance. Dual treatment led to increased formation of DNA double strand breaks and was associated with chromosome pulverization. Combination treatment was also associated with increased micronuclei formation which were capable of being bound by the innate immunomodulatory factor, cGAS, suggesting that combination platinum and ATR inhibition may also enhance response to immunotherapy in ERCC1-deficient tumors. In vivo studies demonstrate a significant effect on tumor growth delay with combination therapy compared with single agent treatment. Results of this study have led to the identification of a feasible therapeutic strategy combining ATR inhibition with platinum and potentially immune checkpoint blockade inhibitors to overcome platinum tolerance in ERCC1-deficient, p53-mutant lung cancers.
Collapse
Affiliation(s)
- Joshua R Heyza
- Department of Oncology, Wayne State University and Karmanos Cancer Institute, Detroit, MI, USA
| | - Elmira Ekinci
- Department of Oncology, Wayne State University and Karmanos Cancer Institute, Detroit, MI, USA
| | - Jacob Lindquist
- Department of Oncology, Wayne State University and Karmanos Cancer Institute, Detroit, MI, USA
| | - Wen Lei
- Department of Oncology, Wayne State University and Karmanos Cancer Institute, Detroit, MI, USA
| | - Christopher Yunker
- Department of Oncology, Wayne State University and Karmanos Cancer Institute, Detroit, MI, USA
| | - Vilvanathan Vinothkumar
- Department of Oncology, Wayne State University and Karmanos Cancer Institute, Detroit, MI, USA
| | - Rachelle Rowbotham
- Department of Oncology, Wayne State University and Karmanos Cancer Institute, Detroit, MI, USA
| | - Lisa Polin
- Department of Oncology, Wayne State University and Karmanos Cancer Institute, Detroit, MI, USA
| | - Natalie G Snider
- Department of Oncology, Wayne State University and Karmanos Cancer Institute, Detroit, MI, USA
| | - Eric Van Buren
- Department of Oncology, Wayne State University and Karmanos Cancer Institute, Detroit, MI, USA
| | - Donovan Watza
- Department of Oncology, Wayne State University and Karmanos Cancer Institute, Detroit, MI, USA
| | - Jessica B Back
- Department of Oncology, Wayne State University and Karmanos Cancer Institute, Detroit, MI, USA
| | - Wei Chen
- Department of Oncology, Wayne State University and Karmanos Cancer Institute, Detroit, MI, USA
| | - Hirva Mamdani
- Department of Oncology, Wayne State University and Karmanos Cancer Institute, Detroit, MI, USA
| | - Ann G Schwartz
- Department of Oncology, Wayne State University and Karmanos Cancer Institute, Detroit, MI, USA
| | - John J Turchi
- Departments of Medicine and Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, IN, USA
- NERx Biosciences, Indianapolis, IN, USA
| | - Gerold Bepler
- Department of Oncology, Wayne State University and Karmanos Cancer Institute, Detroit, MI, USA
| | - Steve M Patrick
- Department of Oncology, Wayne State University and Karmanos Cancer Institute, Detroit, MI, USA
| |
Collapse
|
13
|
Ovejero-Sánchez M, González-Sarmiento R, Herrero AB. DNA Damage Response Alterations in Ovarian Cancer: From Molecular Mechanisms to Therapeutic Opportunities. Cancers (Basel) 2023; 15:448. [PMID: 36672401 PMCID: PMC9856346 DOI: 10.3390/cancers15020448] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 01/03/2023] [Accepted: 01/04/2023] [Indexed: 01/12/2023] Open
Abstract
The DNA damage response (DDR), a set of signaling pathways for DNA damage detection and repair, maintains genomic stability when cells are exposed to endogenous or exogenous DNA-damaging agents. Alterations in these pathways are strongly associated with cancer development, including ovarian cancer (OC), the most lethal gynecologic malignancy. In OC, failures in the DDR have been related not only to the onset but also to progression and chemoresistance. It is known that approximately half of the most frequent subtype, high-grade serous carcinoma (HGSC), exhibit defects in DNA double-strand break (DSB) repair by homologous recombination (HR), and current evidence indicates that probably all HGSCs harbor a defect in at least one DDR pathway. These defects are not restricted to HGSCs; mutations in ARID1A, which are present in 30% of endometrioid OCs and 50% of clear cell (CC) carcinomas, have also been found to confer deficiencies in DNA repair. Moreover, DDR alterations have been described in a variable percentage of the different OC subtypes. Here, we overview the main DNA repair pathways involved in the maintenance of genome stability and their deregulation in OC. We also recapitulate the preclinical and clinical data supporting the potential of targeting the DDR to fight the disease.
Collapse
Affiliation(s)
- María Ovejero-Sánchez
- Institute of Biomedical Research of Salamanca (IBSAL), 37007 Salamanca, Spain
- Molecular Medicine Unit, Department of Medicine, University of Salamanca, 37007 Salamanca, Spain
- Institute of Molecular and Cellular Biology of Cancer (IBMCC), University of Salamanca-Spanish National Research Council, 37007 Salamanca, Spain
| | - Rogelio González-Sarmiento
- Institute of Biomedical Research of Salamanca (IBSAL), 37007 Salamanca, Spain
- Molecular Medicine Unit, Department of Medicine, University of Salamanca, 37007 Salamanca, Spain
- Institute of Molecular and Cellular Biology of Cancer (IBMCC), University of Salamanca-Spanish National Research Council, 37007 Salamanca, Spain
| | - Ana Belén Herrero
- Institute of Biomedical Research of Salamanca (IBSAL), 37007 Salamanca, Spain
- Molecular Medicine Unit, Department of Medicine, University of Salamanca, 37007 Salamanca, Spain
- Institute of Molecular and Cellular Biology of Cancer (IBMCC), University of Salamanca-Spanish National Research Council, 37007 Salamanca, Spain
| |
Collapse
|
14
|
Abstract
Replication stress is a major cause of genomic instability and a crucial vulnerability of cancer cells. This vulnerability can be therapeutically targeted by inhibiting kinases that coordinate the DNA damage response with cell cycle control, including ATR, CHK1, WEE1 and MYT1 checkpoint kinases. In addition, inhibiting the DNA damage response releases DNA fragments into the cytoplasm, eliciting an innate immune response. Therefore, several ATR, CHK1, WEE1 and MYT1 inhibitors are undergoing clinical evaluation as monotherapies or in combination with chemotherapy, poly[ADP-ribose]polymerase (PARP) inhibitors, or immune checkpoint inhibitors to capitalize on high replication stress, overcome therapeutic resistance and promote effective antitumour immunity. Here, we review current and emerging approaches for targeting replication stress in cancer, from preclinical and biomarker development to clinical trial evaluation.
Collapse
Affiliation(s)
| | - Dipanjan Chowdhury
- Department of Radiation Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Geoffrey I Shapiro
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Alan D D'Andrea
- Department of Radiation Oncology, Dana-Farber Cancer Institute, Boston, MA, USA.
- Center for DNA Damage and Repair, Dana-Farber Cancer Institute, Boston, MA, USA.
| | | |
Collapse
|
15
|
Salguero C, Valladolid C, Robinson HMR, Smith GCM, Yap TA. Targeting ATR in Cancer Medicine. Cancer Treat Res 2023; 186:239-283. [PMID: 37978140 DOI: 10.1007/978-3-031-30065-3_14] [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: 11/19/2023]
Abstract
As a key component of the DNA Damage Response, the Ataxia telangiectasia and Rad3-related (ATR) protein is a promising druggable target that is currently widely evaluated in phase I-II-III clinical trials as monotherapy and in combinations with other rational antitumor agents, including immunotherapy, DNA repair inhibitors, chemo- and radiotherapy. Ongoing clinical studies for this drug class must address the optimization of the therapeutic window to limit overlapping toxicities and refine the target population that will most likely benefit from ATR inhibition. With advances in the development of personalized treatment strategies for patients with advanced solid tumors, many ongoing ATR inhibitor trials have been recruiting patients based on their germline and somatic molecular alterations, rather than relying solely on specific tumor subtypes. Although a spectrum of molecular alterations have already been identified as potential predictive biomarkers of response that may sensitize to ATR inhibition, these biomarkers must be analytically validated and feasible to measure robustly to allow for successful integration into the clinic. While several ATR inhibitors in development are poised to address a clinically unmet need, no ATR inhibitor has yet received FDA-approval. This chapter details the underlying rationale for targeting ATR and summarizes the current preclinical and clinical landscape of ATR inhibitors currently in evaluation, as their regulatory approval potentially lies close in sight.
Collapse
Affiliation(s)
- Carolina Salguero
- Department of Investigational Cancer Therapeutics (Phase I Program), Division of Cancer Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Christian Valladolid
- Department of Investigational Cancer Therapeutics (Phase I Program), Division of Cancer Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Helen M R Robinson
- Artios Pharma, The Glenn Berge Building, Babraham Research Campus, Cambridge, UK
| | - Graeme C M Smith
- Artios Pharma, The Glenn Berge Building, Babraham Research Campus, Cambridge, UK
| | - Timothy A Yap
- Department of Investigational Cancer Therapeutics (Phase I Program), Division of Cancer Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
- The Institute for Applied Cancer Science, and Institute for Personalized Cancer Therapy, The University of Texas MD Anderson Cancer Center, 1400 Holcombe Boulevard, TX, 77030, Houston, USA.
| |
Collapse
|
16
|
Mani N, Daiya A, Chowdhury R, Mukherjee S, Chowdhury S. Epigenetic adaptations in drug-tolerant tumor cells. Adv Cancer Res 2023; 158:293-335. [PMID: 36990535 DOI: 10.1016/bs.acr.2022.12.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Traditional chemotherapy against cancer is often severely hampered by acquired resistance to the drug. Epigenetic alterations and other mechanisms like drug efflux, drug metabolism, and engagement of survival pathways are crucial in evading drug pressure. Herein, growing evidence suggests that a subpopulation of tumor cells can often tolerate drug onslaught by entering a "persister" state with minimal proliferation. The molecular features of these persister cells are gradually unraveling. Notably, the "persisters" act as a cache of cells that can eventually re-populate the tumor post-withdrawal drug pressure and contribute to acquiring stable drug-resistant features. This underlines the clinical significance of the tolerant cells. Accumulating evidence highlights the importance of modulation of the epigenome as a critical adaptive strategy for evading drug pressure. Chromatin remodeling, altered DNA methylation, and de-regulation of non-coding RNA expression and function contribute significantly to this persister state. No wonder targeting adaptive epigenetic modifications is increasingly recognized as an appropriate therapeutic strategy to sensitize them and restore drug sensitivity. Furthermore, manipulating the tumor microenvironment and "drug holiday" is also explored to maneuver the epigenome. However, heterogeneity in adaptive strategies and lack of targeted therapies have significantly hindered the translation of epigenetic therapy to the clinics. In this review, we comprehensively analyze the epigenetic alterations adapted by the drug-tolerant cells, the therapeutic strategies employed to date, and their limitations and future prospects.
Collapse
|
17
|
Kulkarni S, Brownlie J, Jeyapalan JN, Mongan NP, Rakha EA, Madhusudan S. Evolving DNA repair synthetic lethality targets in cancer. Biosci Rep 2022; 42. [PMID: 36420962 DOI: 10.1042/BSR20221713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 11/21/2022] [Accepted: 11/24/2022] [Indexed: 11/25/2022] Open
Abstract
DNA damage signaling response and repair (DDR) is a critical defense mechanism against genomic instability. Impaired DNA repair capacity is an important risk factor for cancer development. On the other hand, up-regulation of DDR mechanisms is a feature of cancer chemotherapy and radiotherapy resistance. Advances in our understanding of DDR and its complex role in cancer has led to several translational DNA repair-targeted investigations culminating in clinically viable precision oncology strategy using poly(ADP-ribose) polymerase (PARP) inhibitors in breast, ovarian, pancreatic, and prostate cancers. While PARP directed synthetic lethality has improved outcomes for many patients, the lack of sustained clinical response and the development of resistance pose significant clinical challenges. Therefore, the search for additional DDR-directed drug targets and novel synthetic lethality approaches is highly desirable and is an area of intense preclinical and clinical investigation. Here, we provide an overview of the mammalian DNA repair pathways and then focus on current state of PARP inhibitors (PARPi) and other emerging DNA repair inhibitors for synthetic lethality in cancer.
Collapse
|
18
|
Li S, Wang T, Fei X, Zhang M. ATR Inhibitors in Platinum-Resistant Ovarian Cancer. Cancers (Basel) 2022; 14:cancers14235902. [PMID: 36497387 PMCID: PMC9740197 DOI: 10.3390/cancers14235902] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 11/24/2022] [Accepted: 11/25/2022] [Indexed: 12/02/2022] Open
Abstract
Platinum-resistant ovarian cancer (PROC) is one of the deadliest types of epithelial ovarian cancer, and it is associated with a poor prognosis as the median overall survival (OS) is less than 12 months. Targeted therapy is a popular emerging treatment method. Several targeted therapies, including those using bevacizumab and poly (ADP-ribose) polymerase inhibitor (PARPi), have been used to treat PROC. Ataxia telangiectasia and RAD3-Related Protein Kinase inhibitors (ATRi) have attracted attention as a promising class of targeted drugs that can regulate the cell cycle and influence homologous recombination (HR) repair. In recent years, many preclinical and clinical studies have demonstrated the efficacy of ATRis in PROC. This review focuses on the anticancer mechanism of ATRis and the progress of research on ATRis for PROC.
Collapse
Affiliation(s)
- Siyu Li
- Department of Medical Oncology, The Second Affiliated Hospital of Anhui Medical University, Hefei 230031, China
- Department of Oncology, Anhui Medical University, Hefei 230031, China
| | - Tao Wang
- Department of Medical Oncology, The Second Affiliated Hospital of Anhui Medical University, Hefei 230031, China
- Department of Oncology, Anhui Medical University, Hefei 230031, China
| | - Xichang Fei
- Department of Medical Oncology, The Second Affiliated Hospital of Anhui Medical University, Hefei 230031, China
- Department of Oncology, Anhui Medical University, Hefei 230031, China
| | - Mingjun Zhang
- Department of Medical Oncology, The Second Affiliated Hospital of Anhui Medical University, Hefei 230031, China
- Department of Oncology, Anhui Medical University, Hefei 230031, China
- Correspondence:
| |
Collapse
|
19
|
Sivapalan L, Kocher HM, Ross-Adams H, Chelala C. The molecular landscape of pancreatic ductal adenocarcinoma. Pancreatology 2022; 22:925-936. [PMID: 35927150 DOI: 10.1016/j.pan.2022.07.010] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 06/30/2022] [Accepted: 07/17/2022] [Indexed: 12/24/2022]
Abstract
Pancreatic ductal adenocarcinoma (PDAC) is predicted to become the second leading cause of cancer-related mortality within the next decade, with limited effective treatment options and a dismal long-term prognosis for patients. Surgical resection of early, localised disease provides the only chance for potentially curative treatment; however, most patients with PDAC present with advanced disease and are not suitable for surgery. Genomic analyses of PDAC tumour lesions have identified a small number of recurrent alterations that are detected across most tumours, and beyond that a large number that either occur at a low (<5%) prevalence or are patient-specific in nature. This molecular heterogeneity has presented a significant challenge for the characterisation of tumour subtypes and effective molecular biomarkers, which have not yet manifested clinical benefits for diagnosis, treatment or prognosis in PDAC. These challenges are compounded by the overall lack of tumour biopsies for sequencing, the invasive nature of tissue sampling and the confounding effects of low tumour cellularity in many PDAC biopsy specimens, which have limited the applications of molecular profiling in unresectable patients and for longitudinal tumour monitoring. Further investigation into alternative sources of tumour analytes that can be sampled using minimally invasive methods and used to complement molecular analyses from tissue sequencing are required.
Collapse
Affiliation(s)
- L Sivapalan
- Bioinformatics Unit, Centre for Cancer Biomarkers and Biotherapeutics, Barts Cancer Institute, Queen Mary University of London, UK
| | - H M Kocher
- Centre for Tumour Biology, Barts Cancer Institute, Queen Mary University of London, UK
| | - H Ross-Adams
- Bioinformatics Unit, Centre for Cancer Biomarkers and Biotherapeutics, Barts Cancer Institute, Queen Mary University of London, UK.
| | - C Chelala
- Bioinformatics Unit, Centre for Cancer Biomarkers and Biotherapeutics, Barts Cancer Institute, Queen Mary University of London, UK.
| |
Collapse
|
20
|
Li S, Wang L, Wang Y, Zhang C, Hong Z, Han Z. The synthetic lethality of targeting cell cycle checkpoints and PARPs in cancer treatment. J Hematol Oncol 2022; 15:147. [PMID: 36253861 PMCID: PMC9578258 DOI: 10.1186/s13045-022-01360-x] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [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] [Received: 08/14/2022] [Accepted: 09/30/2022] [Indexed: 11/17/2022] Open
Abstract
Continuous cell division is a hallmark of cancer, and the underlying mechanism is tumor genomics instability. Cell cycle checkpoints are critical for enabling an orderly cell cycle and maintaining genome stability during cell division. Based on their distinct functions in cell cycle control, cell cycle checkpoints are classified into two groups: DNA damage checkpoints and DNA replication stress checkpoints. The DNA damage checkpoints (ATM-CHK2-p53) primarily monitor genetic errors and arrest cell cycle progression to facilitate DNA repair. Unfortunately, genes involved in DNA damage checkpoints are frequently mutated in human malignancies. In contrast, genes associated with DNA replication stress checkpoints (ATR-CHK1-WEE1) are rarely mutated in tumors, and cancer cells are highly dependent on these genes to prevent replication catastrophe and secure genome integrity. At present, poly (ADP-ribose) polymerase inhibitors (PARPi) operate through “synthetic lethality” mechanism with mutant DNA repair pathways genes in cancer cells. However, an increasing number of patients are acquiring PARP inhibitor resistance after prolonged treatment. Recent work suggests that a combination therapy of targeting cell cycle checkpoints and PARPs act synergistically to increase the number of DNA errors, compromise the DNA repair machinery, and disrupt the cell cycle, thereby increasing the death rate of cancer cells with DNA repair deficiency or PARP inhibitor resistance. We highlight a combinational strategy involving PARP inhibitors and inhibition of two major cell cycle checkpoint pathways, ATM-CHK2-TP53 and ATR-CHK1-WEE1. The biological functions, resistance mechanisms against PARP inhibitors, advances in preclinical research, and clinical trials are also reviewed.
Collapse
Affiliation(s)
- Shuangying Li
- Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China
| | - Liangliang Wang
- Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China
| | - Yuanyuan Wang
- Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China
| | - Changyi Zhang
- Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China
| | - Zhenya Hong
- Department of Hematology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China.
| | - Zhiqiang Han
- Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China.
| |
Collapse
|
21
|
Turpin A, Neuzillet C, Colle E, Dusetti N, Nicolle R, Cros J, de Mestier L, Bachet JB, Hammel P. Therapeutic advances in metastatic pancreatic cancer: a focus on targeted therapies. Ther Adv Med Oncol 2022; 14:17588359221118019. [PMID: 36090800 PMCID: PMC9459481 DOI: 10.1177/17588359221118019] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [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] [Received: 04/17/2022] [Accepted: 07/18/2022] [Indexed: 12/12/2022] Open
Abstract
Mortality from pancreatic ductal adenocarcinoma (PDAC) is increasing worldwide and effective new treatments are urgently needed. The current treatment of metastatic PDAC in fit patients is based on two chemotherapy combinations (FOLFIRINOX and gemcitabine plus nab-paclitaxel) which were validated more than 8 years ago. Although almost all treatments targeting specific molecular alterations have failed so far when administered to unselected patients, encouraging results were observed in the small subpopulations of patients with germline BRCA 1/2 mutations, and somatic gene fusions (neurotrophic tyrosine receptor kinase, Neuregulin 1, which are enriched in KRAS wild-type PDAC), KRAS G12C mutations, or microsatellite instability. While targeted tumor metabolism therapies and immunotherapy have been disappointing, they are still under investigation in combination with other drugs. Optimizing pharmacokinetics and adapting available chemotherapies based on molecular signatures are other promising avenues of research. This review evaluates the current expectations and limits of available treatments and analyses the existing trials. A permanent search for actionable vulnerabilities in PDAC tumor cells and microenvironments will probably result in a more personalized therapeutic approach, keeping in mind that supportive care must also play a major role if real clinical efficacy is to be achieved in these patients.
Collapse
Affiliation(s)
- Anthony Turpin
- Department of Medical Oncology, CNRS UMR9020,
Inserm UMR-S 1277-Canther-Cancer Heterogeneity, Plasticity and Resistance to
Therapies, University Lille, CHU Lille, Lille, France
| | - Cindy Neuzillet
- Department of Medical Oncology, Curie
Institute, Versailles Saint-Quentin University, Paris-Saclay University,
Saint-Cloud, France
| | - Elise Colle
- Department of Digestive and Medical Oncology,
Hospital Paul Brousse (AP-HP), Villejuif, University of Paris Saclay,
France
| | - Nelson Dusetti
- Cancer Research Center of Marseille, CRCM,
Inserm, CNRS, Paoli-Calmettes Institut, Aix-Marseille University, Marseille,
France
| | - Rémy Nicolle
- Centre de Recherche sur l’Inflammation, INSERM,
U1149, CNRS, ERL 8252, Université de Paris Cité, Paris, France
| | - Jérôme Cros
- Department of Pathology, University of Paris
Cité, Hospital Beaujon (AP-HP), Clichy, France
| | - Louis de Mestier
- Department of Gastroenterology and
Pancreatology, University of Paris Cité, Hospital Beaujon (AP-HP), Clichy,
France
| | - Jean-Baptiste Bachet
- Department of Gastroenterology and Digestive
Oncology, Pitié-Salpêtrière Hospital, Sorbonne University, UPMC University,
Paris, France
| | - Pascal Hammel
- Department of Digestive and Medical Oncology,
Hôpital Paul Brousse (AP-HP), 12 Avenue Paul Vaillant-Couturier, Villejuif
94800, University of Paris Saclay, France
| |
Collapse
|
22
|
Abstract
Cancer cells establish replicative immortality by activating a telomere-maintenance mechanism (TMM), be it telomerase or the alternative lengthening of telomeres (ALT) pathway. Targeting telomere maintenance represents an intriguing opportunity to treat the vast majority of all cancer types. Whilst telomerase inhibitors have historically been heralded as promising anticancer agents, the reality has been more challenging, and there are currently no therapeutic options for cancer types that use ALT despite their aggressive nature and poor prognosis. In this Review, we discuss the mechanistic differences between telomere maintenance by telomerase and ALT, the current methods used to detect each mechanism, the utility of these tests for clinical diagnosis, and recent developments in the therapeutic strategies being employed to target both telomerase and ALT. We present notable developments in repurposing established therapeutic agents and new avenues that are emerging to target cancer types according to which TMM they employ. These opportunities extend beyond inhibition of telomere maintenance, by finding and exploiting inherent weaknesses in the telomeres themselves to trigger rapid cellular effects that lead to cell death.
Collapse
Affiliation(s)
- Jixuan Gao
- Telomere Length Regulation Unit, Children's Medical Research Institute, Faculty of Medicine and Health, University of Sydney, Westmead, NSW, Australia
| | - Hilda A Pickett
- Telomere Length Regulation Unit, Children's Medical Research Institute, Faculty of Medicine and Health, University of Sydney, Westmead, NSW, Australia.
| |
Collapse
|
23
|
Gralewska P, Gajek A, Rybaczek D, Marczak A, Rogalska A. The Influence of PARP, ATR, CHK1 Inhibitors on Premature Mitotic Entry and Genomic Instability in High-Grade Serous BRCAMUT and BRCAWT Ovarian Cancer Cells. Cells 2022; 11:cells11121889. [PMID: 35741017 PMCID: PMC9221516 DOI: 10.3390/cells11121889] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Revised: 06/06/2022] [Accepted: 06/08/2022] [Indexed: 11/16/2022] Open
Abstract
Olaparib is a poly (ADP-ribose) polymerase inhibitor (PARPi) that inhibits PARP1/2, leading to replication-induced DNA damage that requires homologous recombination repair. Olaparib is often insufficient to treat BRCA-mutated (BRCAMUT) and BRCA wild-type (BRCAWT) high-grade serous ovarian carcinomas (HGSOCs). We examined the short-term (up to 48 h) efficacy of PARPi treatment on a DNA damage response pathway mediated by ATR and CHK1 kinases in BRCAMUT (PEO-1) and BRCAWT (SKOV-3 and OV-90) cells. The combination of ATRi/CHK1i with PARPi was not more cytotoxic than ATR and CHK1 monotherapy. The combination of olaparib with inhibitors of the ATR/CHK1 pathway generated chromosomal abnormalities, independent on BRCAMUT status of cells and formed of micronuclei (MN). However, the beneficial effect of the PARPi:ATRi combination on MN was seen only in the PEO1 BRCAMUT line. Monotherapy with ATR/CHK1 inhibitors reduced BrdU incorporation due to a slower rate of DNA synthesis, which resulted from elevated levels of replication stress, while simultaneous blockade of PARP and ATR caused beneficial effects only in OV-90 cells. Inhibition of ATR/CHK1 increased the formation of double-strand breaks as measured by increased γH2AX expression at collapsed replication forks, resulting in increased levels of apoptosis. Our findings indicate that ATR and CHK1 inhibitors provoke premature mitotic entry, leading to genomic instability and ultimately cell death.
Collapse
Affiliation(s)
- Patrycja Gralewska
- Department of Medical Biophysics, Institute of Biophysics, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska 141/143, 90-236 Lodz, Poland; (P.G.); (A.G.); (A.M.)
| | - Arkadiusz Gajek
- Department of Medical Biophysics, Institute of Biophysics, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska 141/143, 90-236 Lodz, Poland; (P.G.); (A.G.); (A.M.)
| | - Dorota Rybaczek
- Department of Cytophysiology, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska 141/143, 90-236 Lodz, Poland;
| | - Agnieszka Marczak
- Department of Medical Biophysics, Institute of Biophysics, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska 141/143, 90-236 Lodz, Poland; (P.G.); (A.G.); (A.M.)
| | - Aneta Rogalska
- Department of Medical Biophysics, Institute of Biophysics, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska 141/143, 90-236 Lodz, Poland; (P.G.); (A.G.); (A.M.)
- Correspondence: ; Tel.: +48-42-635-44-77
| |
Collapse
|
24
|
Abbotts R, Dellomo AJ, Rassool FV. Pharmacologic Induction of BRCAness in BRCA-Proficient Cancers: Expanding PARP Inhibitor Use. Cancers (Basel) 2022; 14:2640. [PMID: 35681619 PMCID: PMC9179544 DOI: 10.3390/cancers14112640] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Revised: 05/24/2022] [Accepted: 05/24/2022] [Indexed: 12/17/2022] Open
Abstract
Simple Summary BRCA1 and−2 are critical components of the homologous recombination pathway of DNA repair required to effectively repair DNA double strand breaks, leading to an increased cancer risk in patients with inherited BRCA mutations. An additional subset of cancers exhibit ‘BRCAness’, harboring repair defects stemming from mutations in non-BRCA DNA repair genes. Both BRCA-mutant cancers and cancers with a BRCAness phenotype are sensitive to PARP inhibitors, a class of cancer therapy drugs that inhibit the repair of DNA single strand breaks. To expand the use of PARP inhibitors to a larger group of patients, studies have focused on new combination strategies using agents that can induce BRCAness. This review focuses on the current status of drug-induced BRCAness in combination with PARP inhibitors to enhance cancer treatment. Abstract The poly(ADP-ribose) polymerase (PARP) family of proteins has been implicated in numerous cellular processes, including DNA repair, translation, transcription, telomere maintenance, and chromatin remodeling. Best characterized is PARP1, which plays a central role in the repair of single strand DNA damage, thus prompting the development of small molecule PARP inhibitors (PARPi) with the intent of potentiating the genotoxic effects of DNA damaging agents such as chemo- and radiotherapy. However, preclinical studies rapidly uncovered tumor-specific cytotoxicity of PARPi in a subset of cancers carrying mutations in the BReast CAncer 1 and 2 genes (BRCA1/2), which are defective in the homologous recombination (HR) DNA repair pathway, and several PARPi are now FDA-approved for single agent treatment in BRCA-mutated tumors. This phenomenon, termed synthetic lethality, has now been demonstrated in tumors harboring a number of repair gene mutations that produce a BRCA-like impairment of HR (also known as a ‘BRCAness’ phenotype). However, BRCA mutations or BRCAness is present in only a small subset of cancers, limiting PARPi therapeutic utility. Fortunately, it is now increasingly recognized that many small molecule agents, targeting a variety of molecular pathways, can induce therapeutic BRCAness as a downstream effect of activity. This review will discuss the potential for targeting a broad range of molecular pathways to therapeutically induce BRCAness and PARPi synthetic lethality.
Collapse
|
25
|
Cui J, Dean D, Hornicek FJ, Pollock RE, Hoffman RM, Duan Z. ATR inhibition sensitizes liposarcoma to doxorubicin by increasing DNA damage. Am J Cancer Res 2022; 12:1577-1592. [PMID: 35530299 PMCID: PMC9077062] [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: 01/18/2022] [Accepted: 03/04/2022] [Indexed: 06/14/2023] Open
Abstract
Liposarcomas account for approximately 20% of all adult sarcomas and have limited therapeutic options outside of surgery. Inhibition of ataxia-telangiectasia and Rad3 related protein kinase (ATR) has emerged as a promising chemotherapeutic strategy in various cancers. However, its activation, expression, and function in liposarcoma remain unkown. In this study, we investigated the expression, function, and potential of ATR as a therapeutic target in liposarcoma. Activation and expression of ATR in liposarcoma was analyzed by immunohistochemistry, which was further explored for correlation with patient clinical characteristics. ATR-specific siRNA and the ATR inhibitor VE-822 were applied to determine the effect of ATR inhibition on liposarcoma cell proliferation and anti-apoptotic activity. Migration activity and clonogenicity were examined using wound healing and clonogenic assays. ATR (p-ATR) was overexpressed in 88.1% of the liposarcoma specimens and correlated with shorter overall survival in patients. Knockdown of ATR via specific siRNA or inhibition with VE-822 suppressed liposarcoma cell growth, proliferation, migration, colony-forming ability, and spheroid growth. Importantly, ATR inhibition significantly and synergistically enhanced liposarcoma cell line chemosensitivity to doxorubicin. Our findings support ATR as critical to liposarcoma proliferation and doxorubicin resistance. Therefore, the addition of ATR inhibition to a standard doxorubicin regimen is a potential treatment strategy for liposarcoma.
Collapse
Affiliation(s)
- Juncheng Cui
- Department of Orthopedic Surgery, The First Affiliated Hospital of University of South China69 Chuanshan Road, Hengyang 421001, Hunan, China
- Department of Orthopedic Surgery, Sarcoma Biology Laboratory, Sylvester Comprehensive Cancer Center, and The University of Miami Miller School of Medicine, Papanicolaou Cancer Research Building1550 NW. 10th Avenue, Miami, Florida 33136, USA
| | - Dylan Dean
- Department of Orthopedic Surgery, Sarcoma Biology Laboratory, Sylvester Comprehensive Cancer Center, and The University of Miami Miller School of Medicine, Papanicolaou Cancer Research Building1550 NW. 10th Avenue, Miami, Florida 33136, USA
- Department of Orthopaedic Surgery, Keck School of Medicine at University of Southern California (USC), USC Norris Comprehensive Cancer Center1441 Eastlake Ave, NTT 3449, Los Angeles, Califormia 90033, USA
| | - Francis J Hornicek
- Department of Orthopedic Surgery, Sarcoma Biology Laboratory, Sylvester Comprehensive Cancer Center, and The University of Miami Miller School of Medicine, Papanicolaou Cancer Research Building1550 NW. 10th Avenue, Miami, Florida 33136, USA
| | - Raphael E Pollock
- The James Comprehensive Cancer Center, The Ohio State UniversityColumbus, OH, USA
- Department of Surgery, Division of Surgical Oncology, The Ohio State University Wexner Medical CenterColumbus, Ohio 43210, USA
| | - Robert M Hoffman
- AntiCancer Inc., San Diego, CA, USA Department of Surgery, University of CaliforniaSan Diego, Califormia 92111, USA
| | - Zhenfeng Duan
- Department of Orthopedic Surgery, Sarcoma Biology Laboratory, Sylvester Comprehensive Cancer Center, and The University of Miami Miller School of Medicine, Papanicolaou Cancer Research Building1550 NW. 10th Avenue, Miami, Florida 33136, USA
| |
Collapse
|
26
|
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.
Collapse
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;
| |
Collapse
|
27
|
Pan Y, Yang Y, Huang R, Yang H, Huang Q, Ji Y, Dai J, Qiao K, Tang W, Xie L, Yin M, Ouyang J, Ning S, Su D. Ring finger protein 126 promotes breast cancer metastasis and serves as a potential target to improve the therapeutic sensitivity of ATR inhibitors. Breast Cancer Res 2022; 24:92. [PMID: 36539893 PMCID: PMC9764525 DOI: 10.1186/s13058-022-01586-0] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Accepted: 11/30/2022] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND/AIMS This study explores the relationship between the E3 ubiquitin ligase Ring finger protein 126 (RNF126) and early breast cancer metastasis and tests the hypothesis that RNF126 determines the efficacy of inhibitors targeting Ataxia telangiectasia mutated and Rad3-related kinase (ATR). METHODS Various metastasis-related genes were identified by univariable Cox proportional hazards regression analysis based on the GSE11121 dataset. The RNF126-related network modules were identified by WGCNA, whereas cell viability, invasion, and migration assays were performed to evaluate the biological characteristics of breast cancer cells with or without RNF126 knockdown. MTT, immunoblotting, immunofluorescence, and DNA fiber assays were conducted to determine the efficiency of ATR inhibitor in cells with or without RNF126 knockdown. RESULTS RNF126 was associated with early breast cancer metastasis. RNF126 promoted breast cancer cell proliferation, growth, migration, and invasion. ATR inhibitors were more effective at killing breast cancer cells with intact RNF126 due to replication stress compared with the corresponding cells with RNF126 knockdown. Cyclin-dependent kinase 2 (CDK2) was involved in regulating replication stress in breast cancer cells with intact RNF126. CONCLUSION A high level of expression of RNF126 in early breast cancer patients without lymph node metastases may indicate a high-risk type of metastatic disease, possibly due to RNF126, which may increase breast cancer cell proliferation and invasion. RNF126-expressing breast cancer cells exhibit CDK2-mediated replication stress that makes them potential targets for ATR inhibitors.
Collapse
Affiliation(s)
- You Pan
- grid.256607.00000 0004 1798 2653Department of Breast Surgery, Key Laboratory of Breast Cancer Diagnosis and Treatment Research of Guangxi Department of Education, Guangxi Medical University Cancer Hospital, Nanning, 530000 China
| | - Yuchao Yang
- grid.284723.80000 0000 8877 7471Guangdong Provincial Key Laboratory of Medical Biomechanics & Nation Key Discipline of Human Anatomy, School of Basic Medical Science, Southern Medical University, Guangzhou, 510515 China
| | - Rong Huang
- grid.256607.00000 0004 1798 2653Department of Breast Surgery, Key Laboratory of Breast Cancer Diagnosis and Treatment Research of Guangxi Department of Education, Guangxi Medical University Cancer Hospital, Nanning, 530000 China
| | - Huawei Yang
- grid.256607.00000 0004 1798 2653Department of Breast Surgery, Key Laboratory of Breast Cancer Diagnosis and Treatment Research of Guangxi Department of Education, Guangxi Medical University Cancer Hospital, Nanning, 530000 China
| | - Qinghua Huang
- grid.256607.00000 0004 1798 2653Department of Breast Surgery, Key Laboratory of Breast Cancer Diagnosis and Treatment Research of Guangxi Department of Education, Guangxi Medical University Cancer Hospital, Nanning, 530000 China
| | - Yinan Ji
- grid.256607.00000 0004 1798 2653Department of Breast Surgery, Key Laboratory of Breast Cancer Diagnosis and Treatment Research of Guangxi Department of Education, Guangxi Medical University Cancer Hospital, Nanning, 530000 China
| | - Jingxing Dai
- grid.284723.80000 0000 8877 7471Guangdong Provincial Key Laboratory of Medical Biomechanics & Nation Key Discipline of Human Anatomy, School of Basic Medical Science, Southern Medical University, Guangzhou, 510515 China
| | - Kun Qiao
- grid.412651.50000 0004 1808 3502Department of Breast Surgery, Harbin Medical University Cancer Hospital, Harbin, 150000 China
| | - Wei Tang
- grid.256607.00000 0004 1798 2653Department of Breast Surgery, Key Laboratory of Breast Cancer Diagnosis and Treatment Research of Guangxi Department of Education, Guangxi Medical University Cancer Hospital, Nanning, 530000 China
| | - Longgui Xie
- grid.256607.00000 0004 1798 2653Department of Breast Surgery, Key Laboratory of Breast Cancer Diagnosis and Treatment Research of Guangxi Department of Education, Guangxi Medical University Cancer Hospital, Nanning, 530000 China
| | - Ming Yin
- grid.284723.80000 0000 8877 7471Department of Imaging, Nanfang Hospital, Southern Medical University, Guangzhou, 510515 China
| | - Jun Ouyang
- grid.284723.80000 0000 8877 7471Guangdong Provincial Key Laboratory of Medical Biomechanics & Nation Key Discipline of Human Anatomy, School of Basic Medical Science, Southern Medical University, Guangzhou, 510515 China
| | - Shipeng Ning
- grid.256607.00000 0004 1798 2653Department of Breast Surgery, Key Laboratory of Breast Cancer Diagnosis and Treatment Research of Guangxi Department of Education, Guangxi Medical University Cancer Hospital, Nanning, 530000 China
| | - Danke Su
- grid.256607.00000 0004 1798 2653Department of Radiology, Guangxi Medical University Cancer Hospital, Nanning, 530000 China
| |
Collapse
|
28
|
Abstract
ABSTRACT DNA damage response and repair (DDR) is responsible for ensuring genomic integrity. It is composed of intricate, complex pathways that detect various DNA insults and then activate pathways to restore DNA fidelity. Mutations in this network are implicated in many malignancies but can also be exploited for cancer therapies. The advent of inhibitors of poly(ADP-ribose) polymerase has led to the investigation of other DDR inhibitors and combinations to address high unmet needs in cancer therapeutics. Specifically, regimens, often in combination with chemotherapy, radiation, or other DDR inhibitors, are being investigated. This review will focus on 4 main DDR pathways-ATR/CHK1, ATM/CHK2, DNA-PKcs, and polymerase θ-and the current state of clinical research and use of the inhibitors of these pathways with other DDR inhibitors.
Collapse
|
29
|
Redwood AB, Zhang X, Seth SB, Ge Z, Bindeman WE, Zhou X, Sinha VC, Heffernan TP, Piwnica-Worms H. The cytosolic iron-sulfur cluster assembly (CIA) pathway is required for replication stress tolerance of cancer cells to Chk1 and ATR inhibitors. NPJ Breast Cancer 2021; 7:152. [PMID: 34857765 PMCID: PMC8639742 DOI: 10.1038/s41523-021-00353-2] [Citation(s) in RCA: 5] [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] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Accepted: 11/01/2021] [Indexed: 12/13/2022] Open
Abstract
The relationship between ATR/Chk1 activity and replication stress, coupled with the development of potent and tolerable inhibitors of this pathway, has led to the clinical exploration of ATR and Chk1 inhibitors (ATRi/Chk1i) as anticancer therapies for single-agent or combinatorial application. The clinical efficacy of these therapies relies on the ability to ascertain which patient populations are most likely to benefit, so there is intense interest in identifying predictive biomarkers of response. To comprehensively evaluate the components that modulate cancer cell sensitivity to replication stress induced by Chk1i, we performed a synthetic-lethal drop-out screen in a cell line derived from a patient with triple-negative breast cancer (TNBC), using a pooled barcoded shRNA library targeting ~350 genes involved in DNA replication, DNA damage repair, and cycle progression. In addition, we sought to compare the relative requirement of these genes when DNA fidelity is challenged by clinically relevant anticancer breast cancer drugs, including cisplatin and PARP1/2 inhibitors, that have different mechanisms of action. This global comparison is critical for understanding not only which agents should be used together for combinatorial therapies in breast cancer patients, but also the genetic context in which these therapies will be most effective, and when a single-agent therapy will be sufficient to provide maximum therapeutic benefit to the patient. We identified unique potentiators of response to ATRi/Chk1i and describe a new role for components of the cytosolic iron-sulfur assembly (CIA) pathway, MMS19 and CIA2B-FAM96B, in replication stress tolerance of TNBC.
Collapse
Affiliation(s)
- Abena B. Redwood
- grid.240145.60000 0001 2291 4776Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030 USA
| | - Xiaomei Zhang
- grid.240145.60000 0001 2291 4776Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030 USA
| | - Sahil B. Seth
- grid.240145.60000 0001 2291 4776Institute of Applied Cancer Science, The University of Texas MD Anderson Cancer Center, Houston, TX 77030 USA ,grid.240145.60000 0001 2291 4776TRACTION Platform, The University of Texas MD Anderson Cancer Center, Houston, TX 77030 USA
| | - Zhongqi Ge
- grid.240145.60000 0001 2291 4776Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030 USA ,grid.240145.60000 0001 2291 4776Department of Bioinformatics and Computational Biology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030 USA
| | - Wendy E. Bindeman
- grid.240145.60000 0001 2291 4776Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030 USA ,grid.152326.10000 0001 2264 7217Present Address: Vanderbilt University, Department of Cancer Biology, Nashville, TN 37235 USA
| | - Xinhui Zhou
- grid.240145.60000 0001 2291 4776Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030 USA
| | - Vidya C. Sinha
- grid.240145.60000 0001 2291 4776Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030 USA
| | - Timothy P. Heffernan
- grid.240145.60000 0001 2291 4776Institute of Applied Cancer Science, The University of Texas MD Anderson Cancer Center, Houston, TX 77030 USA ,grid.240145.60000 0001 2291 4776TRACTION Platform, The University of Texas MD Anderson Cancer Center, Houston, TX 77030 USA
| | - Helen Piwnica-Worms
- Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA.
| |
Collapse
|
30
|
Wang M, Chen S, Ao D. Targeting DNA repair pathway in cancer: Mechanisms and clinical application. MedComm (Beijing) 2021; 2:654-691. [PMID: 34977872 PMCID: PMC8706759 DOI: 10.1002/mco2.103] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [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] [Received: 11/06/2021] [Revised: 11/21/2021] [Accepted: 11/22/2021] [Indexed: 02/05/2023] Open
Abstract
Over the last decades, the growing understanding on DNA damage response (DDR) pathways has broadened the therapeutic landscape in oncology. It is becoming increasingly clear that the genomic instability of cells resulted from deficient DNA damage response contributes to the occurrence of cancer. One the other hand, these defects could also be exploited as a therapeutic opportunity, which is preferentially more deleterious in tumor cells than in normal cells. An expanding repertoire of DDR-targeting agents has rapidly expanded to inhibitors of multiple members involved in DDR pathways, including PARP, ATM, ATR, CHK1, WEE1, and DNA-PK. In this review, we sought to summarize the complex network of DNA repair machinery in cancer cells and discuss the underlying mechanism for the application of DDR inhibitors in cancer. With the past preclinical evidence and ongoing clinical trials, we also provide an overview of the history and current landscape of DDR inhibitors in cancer treatment, with special focus on the combination of DDR-targeted therapies with other cancer treatment strategies.
Collapse
Affiliation(s)
- Manni Wang
- Department of BiotherapyCancer CenterWest China HospitalSichuan UniversityChengduChina
| | - Siyuan Chen
- Department of BiotherapyCancer CenterWest China HospitalSichuan UniversityChengduChina
| | - Danyi Ao
- Department of BiotherapyCancer CenterWest China HospitalSichuan UniversityChengduChina
| |
Collapse
|
31
|
Khan MA, Vikramdeo KS, Sudan SK, Singh S, Wilhite A, Dasgupta S, Rocconi RP, Singh AP. Platinum-resistant ovarian cancer: From drug resistance mechanisms to liquid biopsy-based biomarkers for disease management. Semin Cancer Biol 2021; 77:99-109. [PMID: 34418576 PMCID: PMC8665066 DOI: 10.1016/j.semcancer.2021.08.005] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [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: 09/14/2020] [Revised: 07/09/2021] [Accepted: 08/12/2021] [Indexed: 12/24/2022]
Abstract
Resistance to platinum-based chemotherapy is a major clinical challenge in ovarian cancer, contributing to the high mortality-to-incidence ratio. Management of the platinum-resistant disease has been difficult due to diverse underlying molecular mechanisms. Over the past several years, research has revealed several novel molecular targets that are being explored as biomarkers for treatment planning and monitoring of response. The therapeutic landscape of ovarian cancer is also rapidly evolving, and alternative therapies are becoming available for the recurrent platinum-resistant disease. This review provides a snapshot of platinum resistance mechanisms and discusses liquid-based biomarkers and their potential utility in effective management of platinum-resistant ovarian cancer.
Collapse
Affiliation(s)
- Mohammad Aslam Khan
- Department of Pathology, College of Medicine, University of South Alabama, Mobile, AL, 36617, United States; Cancer Biology Program, Mitchell Cancer Institute, University of South Alabama, Mobile, AL, 36604, United States
| | - Kunwar Somesh Vikramdeo
- Department of Pathology, College of Medicine, University of South Alabama, Mobile, AL, 36617, United States; Cancer Biology Program, Mitchell Cancer Institute, University of South Alabama, Mobile, AL, 36604, United States
| | - Sarabjeet Kour Sudan
- Department of Pathology, College of Medicine, University of South Alabama, Mobile, AL, 36617, United States; Cancer Biology Program, Mitchell Cancer Institute, University of South Alabama, Mobile, AL, 36604, United States
| | - Seema Singh
- Department of Pathology, College of Medicine, University of South Alabama, Mobile, AL, 36617, United States; Cancer Biology Program, Mitchell Cancer Institute, University of South Alabama, Mobile, AL, 36604, United States; Department of Biochemistry and Molecular Biology, College of Medicine, University of South Alabama, Mobile, AL, 36688, United States
| | - Annelise Wilhite
- Department of Gynecologic Oncology, Mitchell Cancer Institute, University of South Alabama, Mobile, AL, 36604, United States
| | - Santanu Dasgupta
- Department of Pathology, College of Medicine, University of South Alabama, Mobile, AL, 36617, United States; Cancer Biology Program, Mitchell Cancer Institute, University of South Alabama, Mobile, AL, 36604, United States; Department of Biochemistry and Molecular Biology, College of Medicine, University of South Alabama, Mobile, AL, 36688, United States
| | - Rodney Paul Rocconi
- Cancer Biology Program, Mitchell Cancer Institute, University of South Alabama, Mobile, AL, 36604, United States
| | - Ajay Pratap Singh
- Department of Pathology, College of Medicine, University of South Alabama, Mobile, AL, 36617, United States; Cancer Biology Program, Mitchell Cancer Institute, University of South Alabama, Mobile, AL, 36604, United States; Department of Biochemistry and Molecular Biology, College of Medicine, University of South Alabama, Mobile, AL, 36688, United States.
| |
Collapse
|
32
|
Guo Y, Wang J, Benedict B, Yang C, van Gemert F, Ma X, Gao D, Wang H, Zhang S, Lieftink C, Beijersbergen RL, Te Riele H, Qiao X, Gao Q, Sun C, Qin W, Bernards R, Wang C. Targeting CDC7 potentiates ATR-CHK1 signaling inhibition through induction of DNA replication stress in liver cancer. Genome Med 2021; 13:166. [PMID: 34663432 PMCID: PMC8524847 DOI: 10.1186/s13073-021-00981-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Accepted: 09/29/2021] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Liver cancer is one of the most commonly diagnosed cancers and the fourth leading cause of cancer-related death worldwide. Broad-spectrum kinase inhibitors like sorafenib and lenvatinib provide only modest survival benefit to patients with hepatocellular carcinoma (HCC). This study aims to identify novel therapeutic strategies for HCC patients. METHODS Integrated bioinformatics analyses and a non-biased CRISPR loss of function genetic screen were performed to identify potential therapeutic targets for HCC cells. Whole-transcriptome sequencing (RNA-Seq) and time-lapse live imaging were performed to explore the mechanisms of the synergy between CDC7 inhibition and ATR or CHK1 inhibitors in HCC cells. Multiple in vitro and in vivo assays were used to validate the synergistic effects. RESULTS Through integrated bioinformatics analyses using the Cancer Dependency Map and the TCGA database, we identified ATR-CHK1 signaling as a therapeutic target for liver cancer. Pharmacological inhibition of ATR or CHK1 leads to robust proliferation inhibition in liver cancer cells having a high basal level of replication stress. For liver cancer cells that are resistant to ATR or CHK1 inhibition, treatment with CDC7 inhibitors induces strong DNA replication stress and consequently such drugs show striking synergy with ATR or CHK1 inhibitors. The synergy between ATR-CHK1 inhibition and CDC7 inhibition probably derives from abnormalities in mitosis inducing mitotic catastrophe. CONCLUSIONS Our data highlights the potential of targeting ATR-CHK1 signaling, either alone or in combination with CDC7 inhibition, for the treatment of liver cancer.
Collapse
Affiliation(s)
- Yuchen Guo
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute & Department of Liver Surgery, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Division of Molecular Carcinogenesis, Oncode Institute, The Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX, Amsterdam, The Netherlands
| | - Jun Wang
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute & Department of Liver Surgery, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Bente Benedict
- Division of Tumour Biology and Immunology, The Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX, Amsterdam, The Netherlands
| | - Chen Yang
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute & Department of Liver Surgery, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Frank van Gemert
- Division of Tumour Biology and Immunology, The Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX, Amsterdam, The Netherlands
| | - Xuhui Ma
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute & Department of Liver Surgery, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Dongmei Gao
- Liver Cancer Institute, Zhongshan Hospital, Fudan University, Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Shanghai, China
| | - Hui Wang
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute & Department of Liver Surgery, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Shu Zhang
- Liver Cancer Institute, Zhongshan Hospital, Fudan University, Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Shanghai, China
| | - Cor Lieftink
- Division of Molecular Carcinogenesis, Oncode Institute, The Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX, Amsterdam, The Netherlands
| | - Roderick L Beijersbergen
- Division of Molecular Carcinogenesis, Oncode Institute, The Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX, Amsterdam, The Netherlands
| | - Hein Te Riele
- Division of Tumour Biology and Immunology, The Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX, Amsterdam, The Netherlands
| | - Xiaohang Qiao
- Division of Tumour Biology and Immunology, The Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX, Amsterdam, The Netherlands
| | - Qiang Gao
- Liver Cancer Institute, Zhongshan Hospital, Fudan University, Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Shanghai, China
| | - Chong Sun
- Immune Regulation in Cancer Group, German Cancer Research Center, D-69120, Heidelberg, Germany
| | - Wenxin Qin
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute & Department of Liver Surgery, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - René Bernards
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute & Department of Liver Surgery, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
- Division of Molecular Carcinogenesis, Oncode Institute, The Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX, Amsterdam, The Netherlands.
| | - Cun Wang
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute & Department of Liver Surgery, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
| |
Collapse
|
33
|
Shah PD, Wethington SL, Pagan C, Latif N, Tanyi J, Martin LP, Morgan M, Burger RA, Haggerty A, Zarrin H, Rodriguez D, Domchek S, Drapkin R, Shih IM, Smith SA, Dean E, Gaillard S, Armstrong D, Torigian DA, Hwang WT, Giuntoli R, Simpkins F. Combination ATR and PARP Inhibitor (CAPRI): A phase 2 study of ceralasertib plus olaparib in patients with recurrent, platinum-resistant epithelial ovarian cancer. Gynecol Oncol 2021; 163:246-253. [PMID: 34620496 DOI: 10.1016/j.ygyno.2021.08.024] [Citation(s) in RCA: 54] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Revised: 08/24/2021] [Accepted: 08/25/2021] [Indexed: 12/16/2022]
Abstract
OBJECTIVE Platinum-resistant, high-grade serous ovarian cancer (HGSOC) has limited treatment options. Preclinical data suggest that poly(ADP-ribose) polymerase inhibitors (PARPi) and ataxia telangiectasia and Rad3-related kinase inhibitors (ATRi) are synergistic. CAPRI (NCT03462342) is an investigator-initiated study of olaparib plus ceralasertib in recurrent HGSOC. Herein, we present results from the platinum-resistant cohort. METHODS A Simon 2-stage design was utilized. Platinum-resistant HGSOC patients received ceralasertib 160 mg orally daily, days 1-7 and olaparib 300 mg orally twice daily, days 1-28 of a 28-day cycle until toxicity or progression. Primary endpoints were toxicity and efficacy including objective response rate (ORR) by RECIST. Secondary endpoint was progression-free survival (PFS). The null hypothesis (≤5% ORR) would be rejected if there were ≥ 1 responses in 12 patients. RESULTS Fourteen PARPi-naïve patients were evaluable for toxicity; 12 were evaluable for response. Three had BRCA1 mutations (1 germline, 2 somatic). Adverse events possibly related to treatment were primarily grade (G) 1/2. G3 toxicities included nausea (14.3%), fatigue (7.1%), anorexia (7.1%), and anemia (7.1%). No objective responses occurred. Best response was stable disease in 9 patients and progressive disease in three. Five patients had a ≥ 20% to <30% reduction in disease burden, including 3 with BRCA1 mutations. Three of 11 patients (27%; 2 with BRCA1 mutations) evaluable by Gynecologic Cancer Intergroup criteria had >50% CA-125 decline, including 2 with CA-125 normalization. Median PFS was 4.2 months overall (90% CI:3.5-8.2) and 8.2 months (3.6 months-not determined) for patients with BRCA1 mutations. CONCLUSIONS Olaparib plus ceralasertib is well-tolerated. No objective responses occurred, though a signal of activity was seen particularly in disease associated with BRCA1. Further evaluation of this combination should include alternate dosing strategies in genomically-selected populations.
Collapse
Affiliation(s)
- Payal D Shah
- Basser Center for BRCA, Perelman School of Medicine at the University of Pennsylvania, United States of America; Division of Medical Oncology, Perelman School of Medicine at the University of Pennsylvania, United States of America
| | - Stephanie L Wethington
- The Kelly Gynecologic Oncology Service, Department of Gynecology and Obstetrics, Johns Hopkins Medicine, United States of America
| | - Cheyenne Pagan
- Division of Gynecology Oncology, Department of Obstetrics & Gynecology, Perelman School of Medicine at the University of Pennsylvania, United States of America
| | - Nawar Latif
- Division of Gynecology Oncology, Department of Obstetrics & Gynecology, Perelman School of Medicine at the University of Pennsylvania, United States of America
| | - Janos Tanyi
- Division of Gynecology Oncology, Department of Obstetrics & Gynecology, Perelman School of Medicine at the University of Pennsylvania, United States of America
| | - Lainie P Martin
- Division of Medical Oncology, Perelman School of Medicine at the University of Pennsylvania, United States of America
| | - Mark Morgan
- Division of Gynecology Oncology, Department of Obstetrics & Gynecology, Perelman School of Medicine at the University of Pennsylvania, United States of America
| | - Robert A Burger
- Division of Gynecology Oncology, Department of Obstetrics & Gynecology, Perelman School of Medicine at the University of Pennsylvania, United States of America
| | - Ashley Haggerty
- Division of Gynecology Oncology, Department of Obstetrics & Gynecology, Perelman School of Medicine at the University of Pennsylvania, United States of America
| | - Haley Zarrin
- Division of Gynecology Oncology, Department of Obstetrics & Gynecology, Perelman School of Medicine at the University of Pennsylvania, United States of America
| | - Diego Rodriguez
- Division of Gynecology Oncology, Department of Obstetrics & Gynecology, Perelman School of Medicine at the University of Pennsylvania, United States of America
| | - Susan Domchek
- Basser Center for BRCA, Perelman School of Medicine at the University of Pennsylvania, United States of America; Division of Medical Oncology, Perelman School of Medicine at the University of Pennsylvania, United States of America
| | - Ronny Drapkin
- Basser Center for BRCA, Perelman School of Medicine at the University of Pennsylvania, United States of America; Division of Gynecology Oncology, Department of Obstetrics & Gynecology, Perelman School of Medicine at the University of Pennsylvania, United States of America
| | - Ie-Ming Shih
- The Kelly Gynecologic Oncology Service, Department of Gynecology and Obstetrics, Johns Hopkins Medicine, United States of America
| | | | - Emma Dean
- AstraZeneca, R&D Oncology, Cambridge, UK
| | - Stéphanie Gaillard
- The Kelly Gynecologic Oncology Service, Department of Gynecology and Obstetrics, Johns Hopkins Medicine, United States of America
| | - Deborah Armstrong
- The Kelly Gynecologic Oncology Service, Department of Gynecology and Obstetrics, Johns Hopkins Medicine, United States of America
| | - Drew A Torigian
- Department of Radiology, Abramson Cancer Center, Perelman School of Medicine at the University of Pennsylvania, United States of America
| | - Wei-Ting Hwang
- Division of Biostatistics, Abramson Cancer Center, Perelman School of Medicine at the University of Pennsylvania, United States of America
| | - Robert Giuntoli
- Division of Gynecology Oncology, Department of Obstetrics & Gynecology, Perelman School of Medicine at the University of Pennsylvania, United States of America
| | - Fiona Simpkins
- Division of Gynecology Oncology, Department of Obstetrics & Gynecology, Perelman School of Medicine at the University of Pennsylvania, United States of America.
| |
Collapse
|
34
|
Konstantinopoulos PA, da Costa AABA, Gulhan D, Lee EK, Cheng SC, Hendrickson AEW, Kochupurakkal B, Kolin DL, Kohn EC, Liu JF, Stover EH, Curtis J, Tayob N, Polak M, Chowdhury D, Matulonis UA, Färkkilä A, D'Andrea AD, Shapiro GI. A Replication stress biomarker is associated with response to gemcitabine versus combined gemcitabine and ATR inhibitor therapy in ovarian cancer. Nat Commun 2021; 12:5574. [PMID: 34552099 DOI: 10.1038/s41467-021-25904-w] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Accepted: 09/01/2021] [Indexed: 11/08/2022] Open
Abstract
In a trial of patients with high grade serous ovarian cancer (HGSOC), addition of the ATR inhibitor berzosertib to gemcitabine improved progression free survival (PFS) compared to gemcitabine alone but biomarkers predictive of treatment are lacking. Here we report a candidate biomarker of response to gemcitabine versus combined gemcitabine and ATR inhibitor therapy in HGSOC ovarian cancer. Patients with replication stress (RS)-high tumors (n = 27), defined as harboring at least one genomic RS alteration related to loss of RB pathway regulation and/or oncogene-induced replication stress achieve significantly prolonged PFS (HR = 0.38, 90% CI, 0.17-0.86) on gemcitabine monotherapy compared to those with tumors without such alterations (defined as RS-low, n = 30). However, addition of berzosertib to gemcitabine benefits only patients with RS-low tumors (gemcitabine/berzosertib HR 0.34, 90% CI, 0.13-0.86) and not patients with RS-high tumors (HR 1.11, 90% CI, 0.47-2.62). Our findings support the notion that the exacerbation of RS by gemcitabine monotherapy is adequate for lethality in RS-high tumors. Conversely, for RS-low tumors addition of berzosertib-mediated ATR inhibition to gemcitabine is necessary for lethality to occur. Independent prospective validation of this biomarker is required.
Collapse
|
35
|
Oien DB, Ray U, Pathoulas CL, Jin L, Thirusangu P, Jung D, Kumka JE, Xiao Y, Sarkar Bhattacharya S, Montoya D, Chien J, Shridhar V. Quinacrine Induces Nucleolar Stress in Treatment-Refractory Ovarian Cancer Cell Lines. Cancers (Basel) 2021; 13:4645. [PMID: 34572872 DOI: 10.3390/cancers13184645] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 09/03/2021] [Accepted: 09/10/2021] [Indexed: 12/29/2022] Open
Abstract
A considerable subset of gynecologic cancer patients experience disease recurrence or acquired resistance, which contributes to high mortality rates in ovarian cancer (OC). Our prior studies showed that quinacrine (QC), an antimalarial drug, enhanced chemotherapy sensitivity in treatment-refractory OC cells, including artificially generated chemoresistant and high-grade serous OC cells. In this study, we investigated QC-induced transcriptomic changes to uncover its cytotoxic mechanisms of action. Isogenic pairs of OC cells generated to be chemoresistant and their chemosensitive counterparts were treated with QC followed by RNA-seq analysis. Validation of selected expression results and database comparison analyses indicated the ribosomal biogenesis (RBG) pathway is inhibited by QC. RBG is commonly upregulated in cancer cells and is emerging as a drug target. We found that QC attenuates the in vitro and in vivo expression of nucleostemin (NS/GNL3), a nucleolar RBG and DNA repair protein, and the RPA194 catalytic subunit of Pol I that results in RBG inhibition and nucleolar stress. QC promotes the redistribution of fibrillarin in the form of extranuclear foci and nucleolar caps, an indicator of nucleolar stress conditions. In addition, we found that QC-induced downregulation of NS disrupted homologous recombination repair both by reducing NS protein levels and PARylation resulting in reduced RAD51 recruitment to DNA damage. Our data suggest that QC inhibits RBG and this inhibition promotes DNA damage by directly downregulating the NS-RAD51 interaction. Additionally, QC showed strong synergy with PARP inhibitors in OC cells. Overall, we found that QC downregulates the RBG pathway, induces nucleolar stress, supports the increase of DNA damage, and sensitizes cells to PARP inhibition, which supports new therapeutic stratagems for treatment-refractory OC. Our work offers support for targeting RBG in OC and determines NS to be a novel target for QC.
Collapse
|
36
|
Nie S, Wan Y, Wang H, Liu J, Yang J, Sun R, Meng H, Ma X, Jiang Y, Cheng W. CXCL2-mediated ATR/CHK1 signaling pathway and platinum resistance in epithelial ovarian cancer. J Ovarian Res 2021; 14:115. [PMID: 34474677 PMCID: PMC8414676 DOI: 10.1186/s13048-021-00864-3] [Citation(s) in RCA: 5] [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] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Accepted: 08/18/2021] [Indexed: 11/10/2022] Open
Abstract
Tumor microenvironment and chemokines play a significant role in cancer chemoresistance. This study was designed to reveal the important role of CXCL2 in platinum resistance in epithelial ovarian cancer (EOC). Differently expressed (DE) genes were screen out based on analysis of GSE114206 dataset in GEO database. The expression of DE chemokines was further validated in platinum- resistant and sensitive EOC. Cell viability assay and cell apoptosis assay were performed to explore the roles of CXCL2 in EOC. Cell stemness characteristics and the signaling pathway regulated by CXCL2 were also investigated in this study. As the results showed, CXCL2 was identified up-regulated in platinum-resistant EOC. The functional assays showed overexpressing CXCL2 or co-culturing with recombinant human CXCL2 promoted cell resistance to cisplatin. Conversely, knocking down CXCL2 or co-culturing with neutralizing antibody to CXCL2 increased cell response to cisplatin. CXCL2 overexpressing maintained cell stemness and activated ATR/CHK1 signaling pathway in EOC. Moreover, we further demonstrated that CXCL2-mediated resistance to cisplatin could be saved by SB225002, the inhibitor of CXCL2 receptor, as well as be rescued by SAR-020106, the inhibitor of ATR/CHK1 signaling pathway. This study identified a CXCL2-mediated mechanism in EOC platinum resistance. Our findings provided a novel target for chemoresistance prevention in EOC.
Collapse
Affiliation(s)
- Sipei Nie
- Department of Gynecology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, Jiangsu, China
| | - Yicong Wan
- Department of Gynecology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, Jiangsu, China
| | - Hui Wang
- Department of Gynecology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, Jiangsu, China
| | - Jinhui Liu
- Department of Gynecology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, Jiangsu, China
| | - Jing Yang
- Department of Gynecology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, Jiangsu, China
| | - Rui Sun
- Department of Gynecology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, Jiangsu, China
| | - Huangyang Meng
- Department of Gynecology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, Jiangsu, China
| | - Xiaolin Ma
- Department of Gynecology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, Jiangsu, China
| | - Yi Jiang
- Department of Gynecology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, Jiangsu, China
| | - Wenjun Cheng
- Department of Gynecology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, Jiangsu, China.
| |
Collapse
|
37
|
Ngoi NYL, Pham MM, Tan DSP, Yap TA. Targeting the replication stress response through synthetic lethal strategies in cancer medicine. Trends Cancer 2021; 7:930-957. [PMID: 34215565 DOI: 10.1016/j.trecan.2021.06.002] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [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: 04/08/2021] [Revised: 05/28/2021] [Accepted: 06/01/2021] [Indexed: 12/11/2022]
Abstract
The replication stress response (RSR) involves a downstream kinase cascade comprising ataxia telangiectasia-mutated (ATM), ATM and rad3-related (ATR), checkpoint kinases 1 and 2 (CHK1/2), and WEE1-like protein kinase (WEE1), which cooperate to arrest the cell cycle, protect stalled forks, and allow time for replication fork repair. In the presence of elevated replicative stress, cancers are increasingly dependent on RSR to maintain genomic integrity. An increasing number of drug candidates targeting key RSR nodes, as monotherapy through synthetic lethality, or through rational combinations with immune checkpoint inhibitors and targeted therapies, are demonstrating promising efficacy in early phase trials. RSR targeting is also showing potential in reversing PARP inhibitor resistance, an important area of unmet clinical need. In this review, we introduce the concept of targeting the RSR, detail the current landscape of monotherapy and combination strategies, and discuss emerging therapeutic approaches, such as targeting Polθ.
Collapse
Affiliation(s)
- Natalie Y L Ngoi
- Department of Haematology-Oncology, National University Cancer Institute, National University Health System, Singapore
| | - Melissa M Pham
- Department of Gynecologic Oncology and Reproductive Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - David S P Tan
- Department of Haematology-Oncology, National University Cancer Institute, National University Health System, Singapore
| | - Timothy A Yap
- Department of Investigational Cancer Therapeutics (Phase I Clinical Trials Program), Division of Cancer Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA; Khalifa Institute for Personalized Cancer Therapy, The University of Texas MD Anderson Cancer Center, Houston, TX, USA; Department of Thoracic/Head and Neck Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA; The Institute for Applied Cancer Science, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
| |
Collapse
|
38
|
Ekstrom TL, Pathoulas NM, Huehls AM, Kanakkanthara A, Karnitz LM. VLX600 Disrupts Homologous Recombination and Synergizes with PARP Inhibitors and Cisplatin by Inhibiting Histone Lysine Demethylases. Mol Cancer Ther 2021; 20:1561-1571. [PMID: 34224364 DOI: 10.1158/1535-7163.mct-20-1099] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 02/23/2021] [Accepted: 05/27/2021] [Indexed: 11/16/2022]
Abstract
Tumors with defective homologous recombination (HR) DNA repair are more sensitive to chemotherapies that induce lesions repaired by HR as well as PARP inhibitors (PARPis). However, these therapies have limited activity in HR-proficient cells. Accordingly, agents that disrupt HR may be a means to augment the activities of these therapies in HR-proficient tumors. Here we show that VLX600, a small molecule that has been in a phase I clinical trial, disrupts HR and synergizes with PARPis and platinum compounds in ovarian cancer cells. We further found that VLX600 and other iron chelators disrupt HR, in part, by inhibiting iron-dependent histone lysine demethylases (KDM) family members, thus blocking recruitment of HR repair proteins, including RAD51, to double-strand DNA breaks. Collectively, these findings suggest that pharmacologically targeting KDM family members with VLX600 may be a potential novel strategy to therapeutically induce HR defects in ovarian cancers and correspondingly sensitize them to platinum agents and PARPis, two standard-of-care therapies for ovarian cancer.
Collapse
Affiliation(s)
- Thomas L Ekstrom
- Division of Oncology Research, Mayo Clinic College of Medicine, Mayo Clinic, Rochester, Minnesota
| | - Nicholas M Pathoulas
- Division of Oncology Research, Mayo Clinic College of Medicine, Mayo Clinic, Rochester, Minnesota
| | - Amelia M Huehls
- Division of Oncology Research, Mayo Clinic College of Medicine, Mayo Clinic, Rochester, Minnesota
| | - Arun Kanakkanthara
- Division of Oncology Research, Mayo Clinic College of Medicine, Mayo Clinic, Rochester, Minnesota. .,Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic College of Medicine, Mayo Clinic, Rochester, Minnesota
| | - Larry M Karnitz
- Division of Oncology Research, Mayo Clinic College of Medicine, Mayo Clinic, Rochester, Minnesota. .,Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic College of Medicine, Mayo Clinic, Rochester, Minnesota
| |
Collapse
|
39
|
Neiger HE, Siegler EL, Shi Y. Breast Cancer Predisposition Genes and Synthetic Lethality. Int J Mol Sci 2021; 22:5614. [PMID: 34070674 DOI: 10.3390/ijms22115614] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 05/20/2021] [Accepted: 05/24/2021] [Indexed: 12/13/2022] Open
Abstract
BRCA1 and BRCA2 are tumor suppressor genes with pivotal roles in the development of breast and ovarian cancers. These genes are essential for DNA double-strand break repair via homologous recombination (HR), which is a virtually error-free DNA repair mechanism. Following BRCA1 or BRCA2 mutations, HR is compromised, forcing cells to adopt alternative error-prone repair pathways that often result in tumorigenesis. Synthetic lethality refers to cell death caused by simultaneous perturbations of two genes while change of any one of them alone is nonlethal. Therefore, synthetic lethality can be instrumental in identifying new therapeutic targets for BRCA1/2 mutations. PARP is an established synthetic lethal partner of the BRCA genes. Its role is imperative in the single-strand break DNA repair system. Recently, Olaparib (a PARP inhibitor) was approved for treatment of BRCA1/2 breast and ovarian cancer as the first successful synthetic lethality-based therapy, showing considerable success in the development of effective targeted cancer therapeutics. Nevertheless, the possibility of drug resistance to targeted cancer therapy based on synthetic lethality necessitates the development of additional therapeutic options. This literature review addresses cancer predisposition genes, including BRCA1, BRCA2, and PALB2, synthetic lethality in the context of DNA repair machinery, as well as available treatment options.
Collapse
|
40
|
Barger CJ, Chee L, Albahrani M, Munoz-Trujillo C, Boghean L, Branick C, Odunsi K, Drapkin R, Zou L, Karpf AR. Co-regulation and function of FOXM1/ RHNO1 bidirectional genes in cancer. eLife 2021; 10:e55070. [PMID: 33890574 PMCID: PMC8104967 DOI: 10.7554/elife.55070] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2020] [Accepted: 04/22/2021] [Indexed: 12/14/2022] Open
Abstract
The FOXM1 transcription factor is an oncoprotein and a top biomarker of poor prognosis in human cancer. Overexpression and activation of FOXM1 is frequent in high-grade serous carcinoma (HGSC), the most common and lethal form of human ovarian cancer, and is linked to copy number gains at chromosome 12p13.33. We show that FOXM1 is co-amplified and co-expressed with RHNO1, a gene involved in the ATR-Chk1 signaling pathway that functions in the DNA replication stress response. We demonstrate that FOXM1 and RHNO1 are head-to-head (i.e., bidirectional) genes (BDG) regulated by a bidirectional promoter (BDP) (named F/R-BDP). FOXM1 and RHNO1 each promote oncogenic phenotypes in HGSC cells, including clonogenic growth, DNA homologous recombination repair, and poly-ADP ribosylase inhibitor resistance. FOXM1 and RHNO1 are one of the first examples of oncogenic BDG, and therapeutic targeting of FOXM1/RHNO1 BDG is a potential therapeutic approach for ovarian and other cancers.
Collapse
MESH Headings
- Ataxia Telangiectasia Mutated Proteins/genetics
- Ataxia Telangiectasia Mutated Proteins/metabolism
- Carboplatin/pharmacology
- Carrier Proteins/genetics
- Carrier Proteins/metabolism
- Cell Line, Tumor
- Cell Proliferation
- Checkpoint Kinase 1/genetics
- Checkpoint Kinase 1/metabolism
- Databases, Genetic
- Drug Resistance, Neoplasm
- Female
- Forkhead Box Protein M1/genetics
- Forkhead Box Protein M1/metabolism
- Gene Expression Regulation, Neoplastic
- Humans
- Neoplasms, Cystic, Mucinous, and Serous/drug therapy
- Neoplasms, Cystic, Mucinous, and Serous/genetics
- Neoplasms, Cystic, Mucinous, and Serous/metabolism
- Neoplasms, Cystic, Mucinous, and Serous/pathology
- Ovarian Neoplasms/drug therapy
- Ovarian Neoplasms/genetics
- Ovarian Neoplasms/metabolism
- Ovarian Neoplasms/pathology
- Poly(ADP-ribose) Polymerase Inhibitors/pharmacology
- Promoter Regions, Genetic
- Recombinational DNA Repair
- Signal Transduction
Collapse
Affiliation(s)
- Carter J Barger
- Eppley Institute for Cancer Research and Fred & Pamela Buffett Cancer Center, University of Nebraska Medical CenterOmahaUnited States
| | - Linda Chee
- Eppley Institute for Cancer Research and Fred & Pamela Buffett Cancer Center, University of Nebraska Medical CenterOmahaUnited States
| | - Mustafa Albahrani
- Eppley Institute for Cancer Research and Fred & Pamela Buffett Cancer Center, University of Nebraska Medical CenterOmahaUnited States
| | - Catalina Munoz-Trujillo
- Eppley Institute for Cancer Research and Fred & Pamela Buffett Cancer Center, University of Nebraska Medical CenterOmahaUnited States
| | - Lidia Boghean
- Eppley Institute for Cancer Research and Fred & Pamela Buffett Cancer Center, University of Nebraska Medical CenterOmahaUnited States
| | - Connor Branick
- Eppley Institute for Cancer Research and Fred & Pamela Buffett Cancer Center, University of Nebraska Medical CenterOmahaUnited States
| | - Kunle Odunsi
- Departments of Gynecologic Oncology, Immunology, and Center for Immunotherapy, Roswell Park Comprehensive Cancer CenterBuffaloUnited States
| | - Ronny Drapkin
- Penn Ovarian Cancer Research Center, University of Pennsylvania Perelman School of MedicinePhiladelphiaUnited States
| | - Lee Zou
- Massachusetts General Hospital Cancer Center, Harvard Medical SchoolCharlestownUnited States
| | - Adam R Karpf
- Eppley Institute for Cancer Research and Fred & Pamela Buffett Cancer Center, University of Nebraska Medical CenterOmahaUnited States
| |
Collapse
|
41
|
Broit N, Johansson PA, Rodgers CB, Walpole ST, Newell F, Hayward NK, Pritchard AL. Meta-Analysis and Systematic Review of the Genomics of Mucosal Melanoma. Mol Cancer Res 2021; 19:991-1004. [PMID: 33707307 DOI: 10.1158/1541-7786.mcr-20-0839] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 01/08/2021] [Accepted: 02/26/2021] [Indexed: 11/16/2022]
Abstract
Mucosal melanoma is a rare subtype of melanoma. To date, there has been no comprehensive systematic collation and statistical analysis of the aberrations and aggregated frequency of driver events across multiple studies. Published studies using whole genome, whole exome, targeted gene panel, or individual gene sequencing were identified. Datasets from these studies were collated to summarize mutations, structural variants, and regions of copy-number alteration. Studies using next-generation sequencing were divided into the "main" cohort (n = 173; fresh-frozen samples), "validation" cohort (n = 48; formalin-fixed, paraffin-embedded samples) and a second "validation" cohort comprised 104 tumors sequenced using a targeted panel. Studies assessing mutations in BRAF, KIT, and NRAS were summarized to assess hotspot mutations. Statistical analysis of the main cohort variant data revealed KIT, NF1, BRAF, NRAS, SF3B1, and SPRED1 as significantly mutated genes. ATRX and SF3B1 mutations occurred more commonly in lower anatomy melanomas and CTNNB1 in the upper anatomy. NF1, PTEN, CDKN2A, SPRED1, ATM, CHEK2, and ARID1B were commonly affected by chromosomal copy loss, while TERT, KIT, BRAF, YAP1, CDK4, CCND1, GAB2, MDM2, SKP2, and MITF were commonly amplified. Further notable genomic alterations occurring at lower frequencies indicated commonality of signaling networks in tumorigenesis, including MAPK, PI3K, Notch, Wnt/β-catenin, cell cycle, DNA repair, and telomere maintenance pathways. This analysis identified genomic aberrations that provide some insight to the way in which specific pathways may be disrupted. IMPLICATIONS: Our analysis has shown that mucosal melanomas have a diverse range of genomic alterations in several biological pathways. VISUAL OVERVIEW: http://mcr.aacrjournals.org/content/molcanres/19/6/991/F1.large.jpg.
Collapse
Affiliation(s)
- Natasa Broit
- QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia.,Faculty of Medicine, University of Queensland, Queensland, Australia
| | - Peter A Johansson
- QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | - Chloe B Rodgers
- Department of Genetics and Immunology, University of the Highlands and Islands, Inverness, Scotland
| | | | - Felicity Newell
- QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | - Nicholas K Hayward
- QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | - Antonia L Pritchard
- QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia. .,Department of Genetics and Immunology, University of the Highlands and Islands, Inverness, Scotland
| |
Collapse
|
42
|
De Conti G, Dias MH, Bernards R. Fighting Drug Resistance through the Targeting of Drug-Tolerant Persister Cells. Cancers (Basel) 2021; 13:cancers13051118. [PMID: 33807785 PMCID: PMC7961328 DOI: 10.3390/cancers13051118] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 02/24/2021] [Accepted: 02/28/2021] [Indexed: 12/12/2022] Open
Abstract
Designing specific therapies for drug-resistant cancers is arguably the ultimate challenge in cancer therapy. While much emphasis has been put on the study of genetic alterations that give rise to drug resistance, much less is known about the non-genetic adaptation mechanisms that operate during the early stages of drug resistance development. Drug-tolerant persister cells have been suggested to be key players in this process. These cells are thought to have undergone non-genetic adaptations that enable survival in the presence of a drug, from which full-blown resistant cells may emerge. Such initial adaptations often involve engagement of stress response programs to maintain cancer cell viability. In this review, we discuss the nature of drug-tolerant cancer phenotypes, as well as the non-genetic adaptations involved. We also discuss how malignant cells employ homeostatic stress response pathways to mitigate the intrinsic costs of such adaptations. Lastly, we discuss which vulnerabilities are introduced by these adaptations and how these might be exploited therapeutically.
Collapse
|
43
|
Sadoughi F, Mirsafaei L, Dana PM, Hallajzadeh J, Asemi Z, Mansournia MA, Montazer M, Hosseinpour M, Yousefi B. The role of DNA damage response in chemo- and radio-resistance of cancer cells: Can DDR inhibitors sole the problem? DNA Repair (Amst) 2021; 101:103074. [PMID: 33640757 DOI: 10.1016/j.dnarep.2021.103074] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Accepted: 02/12/2021] [Indexed: 12/15/2022]
Abstract
Up to now, many improvements have been made in providing more therapeutic strategies for cancer patients. The lack of susceptibility to common therapies like chemo- and radio-therapy is one of the reasons why we need more methods in the field of cancer therapy. DNA damage response (DDR) is a set of mechanisms which identifies DNA lesions and triggers the repair process for restoring DNA after causing an arrest in the cell cycle. The ability of DDR in maintaining the genome stability and integrity can be favorable to cancerous cells which are exposed to radiation therapy or are treated with chemotherapeutic agents. When DDR mechanisms are error-free in cancer cells, they can escape the expected cellular death and display resistance to treatment. In this regard, targeting different components of DDR can help to increase the susceptibility of advanced tumors to chemo- and radio-therapy.
Collapse
Affiliation(s)
- Fatemeh Sadoughi
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Institute for Basic Sciences, Kashan University of Medical Sciences, Kashan, Iran.
| | - Liaosadat Mirsafaei
- Department of Cardiology, Ramsar Campus, Mazandaran University of Medical Sciences, Sari, Iran.
| | - Parisa Maleki Dana
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Institute for Basic Sciences, Kashan University of Medical Sciences, Kashan, Iran.
| | - Jamal Hallajzadeh
- Department of Biochemistry and Nutrition, Research Center for Evidence-Based Health Management, Maragheh University of Medical Sciences, Maragheh, Iran.
| | - Zatollah Asemi
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Institute for Basic Sciences, Kashan University of Medical Sciences, Kashan, Iran.
| | - Mohammad Ali Mansournia
- Department of Epidemiology and Biostatistics, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran.
| | - Majid Montazer
- Department of Thorax Surgery, Tuberculosis and Lung Disease Research Center, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran.
| | - Mohammad Hosseinpour
- Molecular Medicine Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
| | - Bahman Yousefi
- Molecular Medicine Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Department of Biochemistry, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran.
| |
Collapse
|
44
|
Barnieh FM, Loadman PM, Falconer RA. Progress towards a clinically-successful ATR inhibitor for cancer therapy. Curr Res Pharmacol Drug Discov 2021; 2:100017. [PMID: 34909652 PMCID: PMC8663972 DOI: 10.1016/j.crphar.2021.100017] [Citation(s) in RCA: 55] [Impact Index Per Article: 18.3] [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] [Received: 11/30/2020] [Revised: 01/24/2021] [Accepted: 01/24/2021] [Indexed: 02/06/2023] Open
Abstract
The DNA damage response (DDR) is now known to play an important role in both cancer development and its treatment. Targeting proteins such as ATR (Ataxia telangiectasia mutated and Rad3-related) kinase, a major regulator of DDR, has demonstrated significant therapeutic potential in cancer treatment, with ATR inhibitors having shown anti-tumour activity not just as monotherapies, but also in potentiating the effects of conventional chemotherapy, radiotherapy, and immunotherapy. This review focuses on the biology of ATR, its functional role in cancer development and treatment, and the rationale behind inhibition of this target as a therapeutic approach, including evaluation of the progress and current status of development of potent and specific ATR inhibitors that have emerged in recent decades. The current applications of these inhibitors both in preclinical and clinical studies either as single agents or in combinations with chemotherapy, radiotherapy and immunotherapy are also extensively discussed. This review concludes with some insights into the various concerns raised or observed with ATR inhibition in both the preclinical and clinical settings, with some suggested solutions.
Collapse
Affiliation(s)
- Francis M. Barnieh
- Institute of Cancer Therapeutics, Faculty of Life Sciences, University of Bradford, Bradford, BD7 1DP, UK
| | - Paul M. Loadman
- Institute of Cancer Therapeutics, Faculty of Life Sciences, University of Bradford, Bradford, BD7 1DP, UK
| | - Robert A. Falconer
- Institute of Cancer Therapeutics, Faculty of Life Sciences, University of Bradford, Bradford, BD7 1DP, UK
| |
Collapse
|
45
|
Abstract
DNA replication forks are constantly challenged by DNA lesions induced by endogenous and exogenous sources. DNA damage tolerance mechanisms ensure that DNA replication continues with minimal effects on replication fork elongation either by using specialized DNA polymerases, which have the ability to replicate through the damaged template, or by skipping the damaged DNA, leaving it to be repaired after replication. These mechanisms are evolutionarily conserved in bacteria, yeast, and higher eukaryotes, and are paramount to ensure timely and faithful duplication of the genome. The Primase and DNA-directed Polymerase (PRIMPOL) is a recently discovered enzyme that possesses both primase and polymerase activities. PRIMPOL is emerging as a key player in DNA damage tolerance, particularly in vertebrate and human cells. Here, we review our current understanding of the function of PRIMPOL in DNA damage tolerance by focusing on the structural aspects that define its dual enzymatic activity, as well as on the mechanisms that control its chromatin recruitment and expression levels. We also focus on the latest findings on the mitochondrial and nuclear functions of PRIMPOL and on the impact of loss of these functions on genome stability and cell survival. Defining the function of PRIMPOL in DNA damage tolerance is becoming increasingly important in the context of human disease. In particular, we discuss recent evidence pointing at the PRIMPOL pathway as a novel molecular target to improve cancer cell response to DNA-damaging chemotherapy and as a predictive parameter to stratify patients in personalized cancer therapy.
Collapse
Affiliation(s)
- Stephanie Tirman
- Division of Oncology, Department of Medicine, Washington University School of Medicine, St. Louis MO, 63110, USA
- Edward A. Doisy Department of Biochemistry and Molecular Biology, Saint Louis University School of Medicine, St. Louis, MO 63104, USA
| | - Emily Cybulla
- Division of Oncology, Department of Medicine, Washington University School of Medicine, St. Louis MO, 63110, USA
- Edward A. Doisy Department of Biochemistry and Molecular Biology, Saint Louis University School of Medicine, St. Louis, MO 63104, USA
| | - Annabel Quinet
- Division of Oncology, Department of Medicine, Washington University School of Medicine, St. Louis MO, 63110, USA
| | - Alice Meroni
- Division of Oncology, Department of Medicine, Washington University School of Medicine, St. Louis MO, 63110, USA
| | - Alessandro Vindigni
- Division of Oncology, Department of Medicine, Washington University School of Medicine, St. Louis MO, 63110, USA
| |
Collapse
|
46
|
Hur J, Ghosh M, Kim TH, Park N, Pandey K, Cho YB, Hong SD, Katuwal NB, Kang M, An HJ, Moon YW. Synergism of AZD6738, an ATR Inhibitor, in Combination with Belotecan, a Camptothecin Analogue, in Chemotherapy-Resistant Ovarian Cancer. Int J Mol Sci 2021; 22:ijms22031223. [PMID: 33513721 PMCID: PMC7865398 DOI: 10.3390/ijms22031223] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Revised: 01/21/2021] [Accepted: 01/23/2021] [Indexed: 12/11/2022] Open
Abstract
Epithelial ovarian cancer remains the leading cause of mortality among all gynecologic malignancies owing to recurrence and ultimate development of chemotherapy resistance in the majority of patients. In the chemotherapy-resistant ovarian cancer preclinical model, we investigated whether AZD6738 (an ataxia telangiectasia and Rad3-related (ATR) inhibitor) could synergize with belotecan (a camptothecin analog and topoisomerase I inhibitor). In vitro, both chemotherapy-resistant and chemotherapy-sensitive ovarian cancer cell lines showed synergistic anti-proliferative activity with a combination treatment of belotecan and AZD6738. The combination also demonstrated synergistic tumor inhibition in mice with a chemotherapy-resistant cell line xenograft. Mechanistically, belotecan, a DNA-damaging agent, increased phospho-ATR (pATR) and phospho-Chk1 (pChk1) in consecutive order, indicating the activation of the DNA repair system. This consequently induced G2/M arrest in the cell cycle analysis. However, when AZD6738 was added to belotecan, pATR and pChk1 induced by belotecan alone were suppressed again. A cell cycle analysis in betotecan showed a sub-G1 increase as well as a G2/M decrease, representing the release of G2/M arrest and the induction of apoptosis. In ascites-derived primary cancer cells from both chemotherapy-sensitive and -resistant ovarian cancer patients, this combination was also synergistic, providing further support for our hypothesis. The combined administration of ATR inhibitor and belotecan proved to be synergistic in our preclinical model. This combination warrants further investigation in a clinical trial, with a particular aim of overcoming chemotherapy resistance in ovarian cancer.
Collapse
Affiliation(s)
- Jin Hur
- Hematology and Oncology, Department of Internal Medicine, CHA Bundang Medical Center, CHA University, Seongnam 13496, Korea; (J.H.); (M.G.); (N.P.); (K.P.); (Y.B.C.); (S.D.H.); (N.B.K.); (M.K.)
- Department of Biomedical Science, The Graduate School, CHA University, Seongnam 13496, Korea
| | - Mithun Ghosh
- Hematology and Oncology, Department of Internal Medicine, CHA Bundang Medical Center, CHA University, Seongnam 13496, Korea; (J.H.); (M.G.); (N.P.); (K.P.); (Y.B.C.); (S.D.H.); (N.B.K.); (M.K.)
- Department of Biomedical Science, The Graduate School, CHA University, Seongnam 13496, Korea
| | - Tae Heon Kim
- Department of Pathology, CHA Bundang Medical Center, CHA University, Seongnam 13496, Korea; (T.H.K.); (H.J.A.)
| | - Nahee Park
- Hematology and Oncology, Department of Internal Medicine, CHA Bundang Medical Center, CHA University, Seongnam 13496, Korea; (J.H.); (M.G.); (N.P.); (K.P.); (Y.B.C.); (S.D.H.); (N.B.K.); (M.K.)
| | - Kamal Pandey
- Hematology and Oncology, Department of Internal Medicine, CHA Bundang Medical Center, CHA University, Seongnam 13496, Korea; (J.H.); (M.G.); (N.P.); (K.P.); (Y.B.C.); (S.D.H.); (N.B.K.); (M.K.)
| | - Young Bin Cho
- Hematology and Oncology, Department of Internal Medicine, CHA Bundang Medical Center, CHA University, Seongnam 13496, Korea; (J.H.); (M.G.); (N.P.); (K.P.); (Y.B.C.); (S.D.H.); (N.B.K.); (M.K.)
| | - Sa Deok Hong
- Hematology and Oncology, Department of Internal Medicine, CHA Bundang Medical Center, CHA University, Seongnam 13496, Korea; (J.H.); (M.G.); (N.P.); (K.P.); (Y.B.C.); (S.D.H.); (N.B.K.); (M.K.)
- Department of Biomedical Science, The Graduate School, CHA University, Seongnam 13496, Korea
| | - Nar Bahadur Katuwal
- Hematology and Oncology, Department of Internal Medicine, CHA Bundang Medical Center, CHA University, Seongnam 13496, Korea; (J.H.); (M.G.); (N.P.); (K.P.); (Y.B.C.); (S.D.H.); (N.B.K.); (M.K.)
- Department of Biomedical Science, The Graduate School, CHA University, Seongnam 13496, Korea
| | - Minsil Kang
- Hematology and Oncology, Department of Internal Medicine, CHA Bundang Medical Center, CHA University, Seongnam 13496, Korea; (J.H.); (M.G.); (N.P.); (K.P.); (Y.B.C.); (S.D.H.); (N.B.K.); (M.K.)
| | - Hee Jung An
- Department of Pathology, CHA Bundang Medical Center, CHA University, Seongnam 13496, Korea; (T.H.K.); (H.J.A.)
| | - Yong Wha Moon
- Hematology and Oncology, Department of Internal Medicine, CHA Bundang Medical Center, CHA University, Seongnam 13496, Korea; (J.H.); (M.G.); (N.P.); (K.P.); (Y.B.C.); (S.D.H.); (N.B.K.); (M.K.)
- Correspondence: ; Tel.: +82-31-780-3436; Fax: +82-31-780-3929
| |
Collapse
|
47
|
Moolmuang B, Ruchirawat M. The antiproliferative effects of ataxia-telangiectasia mutated and ATM- and Rad3-related inhibitions and their enhancements with the cytotoxicity of DNA damaging agents in cholangiocarcinoma cells. J Pharm Pharmacol 2021; 73:40-51. [PMID: 33791808 DOI: 10.1093/jpp/rgaa050] [Citation(s) in RCA: 1] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Accepted: 12/08/2020] [Indexed: 12/15/2022]
Abstract
OBJECTIVE To investigate whether the inhibitions of ataxia-telangiectasia mutated (ATM) and ATM- and Rad3-related (ATR) kinases by their specific inhibitors, KU-55933 and VE-821, respectively, are able to promote the cytotoxic activity of genotoxic agents including gemcitabine, 5-Fluorouracil, cisplatin and doxorubicin, in cholangiocarcinoma (CCA) and immortalized cholangiocyte cell lines. METHODS Cell viability of cells treated with DNA damaging agents, alone and in combination with KU-55933 and VE-821, was determined by MTT assay. The changes of cell cycle distribution were evaluated by flow cytometry analysis. Colony formation was conducted to assess the effects of KU-55933 and VE-821 on cell proliferation. The levels of protein expression and phosphorylation were examined by western blot analysis. KEY FINDINGS The cytotoxic effects of DNA damaging agents varied among CCA cell lines. Each DNA damaging drug induced different phases of the cell cycle in CCA cells. The combinations of both KU-55933 and VE-821 with DNA damaging agents promoted more cytotoxic activity than single inhibition in some CCA cell lines. ATM and ATR inhibitors decreased the effects of DNA damaging agent-induced ATM-Chk2 and ATR-Chk1 activations in CCA cells. CONCLUSIONS Inhibitions of ATM and ATR potentiated the cytotoxic effects of DNA damaging agents in CCA cells, especially p53 defective HuCCA1 and RMCC1 cell lines.
Collapse
Affiliation(s)
- Benchamart Moolmuang
- Laboratory of Chemical Carcinogenesis, Chulabhorn Research Institute, Bangkok, Thailand
| | - Mathuros Ruchirawat
- Laboratory of Environmental Toxicology, Chulabhorn Research Institute, Bangkok, Thailand
| |
Collapse
|
48
|
Konstantinopoulos PA, Lheureux S, Moore KN. PARP Inhibitors for Ovarian Cancer: Current Indications, Future Combinations, and Novel Assets in Development to Target DNA Damage Repair. Am Soc Clin Oncol Educ Book 2021; 40:1-16. [PMID: 32364757 DOI: 10.1200/edbk_288015] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
PARP inhibitors (PARPIs) have revolutionized the treatment of epithelial ovarian cancer, first for BRCA-associated cancer, and, recently, for all epithelial cancers of serous or high-grade endometrioid subtypes in the front line. Although there is hope that PARPIs will help prevent recurrences when used following frontline maintenance, cancer will still recur in most women, and the need for active combination strategies as well as continued development of novel assets, either as monotherapy or in combination, will be urgently needed. This review article discusses the current indications for PARPIs in both frontline and recurrent settings, current research in combination approaches, and finally, ongoing research on novel methods to target DNA damage response in an effort to exploit the common susceptibility to DNA damage repair in epithelial ovarian cancer and improve outcomes for patients.
Collapse
Affiliation(s)
| | | | - Kathleen N Moore
- Stephenson Cancer Center at the University of Oklahoma Health Sciences Center, Oklahoma City, OK
| |
Collapse
|
49
|
Feng W, Dean DC, Hornicek FJ, Wang J, Jia Y, Duan Z, Shi H. ATR and p-ATR are emerging prognostic biomarkers and DNA damage response targets in ovarian cancer. Ther Adv Med Oncol 2020; 12:1758835920982853. [PMID: 33854565 PMCID: PMC8013598 DOI: 10.1177/1758835920982853] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [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] [Received: 06/13/2020] [Accepted: 11/30/2020] [Indexed: 12/16/2022] Open
Abstract
Background: Although ataxia-telangiectasia and Rad3 related (ATR) has an established role in the DNA damage response of various cancers, its clinical and prognostic significance in ovarian cancer remains largely unknown. The aims of this study were to assess the expression, function, and clinical prognostic relationship of ATR and phospho-ATR ser428 (p-ATR) in ovarian cancer. Methods: We confirmed ATR and p-ATR expression by immunohistochemistry (IHC) in a unique ovarian cancer tissue microarray constructed of paired primary, recurrent, and metastatic tumor tissues from 26 individual patients. ATR-specific small interfering RNA (siRNA) and ATR inhibitor VE-822 were applied to determine the effects of ATR inhibition on ovarian cancer cell proliferation, apoptosis, and DNA damage. ATR expression and the associated proteins of the ATR/Chk1 pathway in ovarian cancer cell lines were evaluated by Western blotting. The clonogenicity was also examined using clonogenic assays. A three dimensional (3D) cell culture model was performed to mimic the in vivo ovarian cancer environment to further validate the effects of ATR inhibition on ovarian cancer cells. Results: We show recurrent ovarian cancer tissues express higher levels of ATR and p-ATR than their patient-matched primary tumor counterparts. Additionally, higher expression of p-ATR correlates with decreased survival in ovarian cancer patients. Treatment of ovarian cancer cells with ATR specific siRNA or ATR inhibitor VE-822 led to significant apoptosis and inhibition of cellular proliferation, with reduced phosphorylation of Chk1 (p-Chk1), Cdc25c (p-Cdc25c), Cdc2 (p-Cdc2), and increased expression of cleaved PARP and γH2AX. Inhibition of ATR also suppressed clonogenicity and spheroid growth of ovarian cancer cells. Conclusion: Our results support the ATR and p-ATR pathway as a prognostic biomarker, and targeting the ATR machinery is an emerging therapeutic approach in the treatment of ovarian cancer.
Collapse
Affiliation(s)
- Wenlong Feng
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Dylan C Dean
- Department of Orthopaedic Surgery, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Francis J Hornicek
- Department of Orthopaedic Surgery, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Jinglu Wang
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Yanyan Jia
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Zhenfeng Duan
- Department of Orthopaedic Surgery, David Geffen School of Medicine at UCLA, 615 Charles E. Young. Dr. South, Los Angeles, CA 90095, USA
| | - Huirong Shi
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Zhengzhou University, 1 Jianshe East Road, Zhengzhou, Henan 450052, China
| |
Collapse
|
50
|
Gralewska P, Gajek A, Marczak A, Mikuła M, Ostrowski J, Śliwińska A, Rogalska A. PARP Inhibition Increases the Reliance on ATR/CHK1 Checkpoint Signaling Leading to Synthetic Lethality-An Alternative Treatment Strategy for Epithelial Ovarian Cancer Cells Independent from HR Effectiveness. Int J Mol Sci 2020; 21:E9715. [PMID: 33352723 DOI: 10.3390/ijms21249715] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 12/14/2020] [Accepted: 12/16/2020] [Indexed: 12/20/2022] Open
Abstract
Poly (ADP-ribose) polymerase inhibitor (PARPi, olaparib) impairs the repair of DNA single-strand breaks (SSBs), resulting in double-strand breaks (DSBs) that cannot be repaired efficiently in homologous recombination repair (HRR)-deficient cancers such as BRCA1/2-mutant cancers, leading to synthetic lethality. Despite the efficacy of olaparib in the treatment of BRCA1/2 deficient tumors, PARPi resistance is common. We hypothesized that the combination of olaparib with anticancer agents that disrupt HRR by targeting ataxia telangiectasia and Rad3-related protein (ATR) or checkpoint kinase 1 (CHK1) may be an effective strategy to reverse ovarian cancer resistance to olaparib. Here, we evaluated the effect of olaparib, the ATR inhibitor AZD6738, and the CHK1 inhibitor MK8776 alone and in combination on cell survival, colony formation, replication stress response (RSR) protein expression, DNA damage, and apoptotic changes in BRCA2 mutated (PEO-1) and HRR-proficient BRCA wild-type (SKOV-3 and OV-90) cells. Combined treatment caused the accumulation of DNA DSBs. PARP expression was associated with sensitivity to olaparib or inhibitors of RSR. Synergistic effects were weaker when olaparib was combined with CHK1i and occurred regardless of the BRCA2 status of tumor cells. Because PARPi increases the reliance on ATR/CHK1 for genome stability, the combination of PARPi with ATR inhibition suppressed ovarian cancer cell growth independently of the efficacy of HRR. The present results were obtained at sub-lethal doses, suggesting the potential of these inhibitors as monotherapy as well as in combination with olaparib.
Collapse
|