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The Impact of p53 Dysfunction in ATR Inhibitor Cytotoxicity and Chemo- and Radiosensitisation. Cancers (Basel) 2018; 10:cancers10080275. [PMID: 30127241 PMCID: PMC6116113 DOI: 10.3390/cancers10080275] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Revised: 07/27/2018] [Accepted: 08/14/2018] [Indexed: 01/24/2023] Open
Abstract
Ataxia telangiectasia mutated and Rad3 related kinase (ATR) signals replication stress and DNA damage to S and G2 arrest and promotes DNA repair. Mutations in p53, critical for G1 checkpoint control, are common in cancer and predicted to confer vulnerability to ATR inhibitors. Reported data on the impact of p53 status are variable possibly because of the use of unmatched cells and surrogate endpoints of survival. The cytotoxicity of VE-821 alone and its ability to potentiate radiation and gemcitabine cytotoxicity was determined in isogenic and unmatched p53 wild-type (wt) and null/mutant cells, as well as immortalised nonmalignant MCF10 (immortalised non-neoplastic) cells, by colony-forming assay. The effect on cell cycle checkpoints was determined by flow cytometry. The isogenic p53 defective cells were not more sensitive to VE-821 alone. Defective p53 consistently conferred greater chemo- and radiosensitisation, particularly at high dose levels in isogenic cells but not unmatched cells. VE-821 did not sensitise MCF10 cells. We conclude that p53 status is just one factor contributing to chemo- and radiosensitisation by ATR inhibition, the lack of chemo- or radiosensitisation in the noncancerous cells suggests an element of tumour-specificity that warrants further investigation. The greater sensitisation at high-dose irradiation suggests that ATR inhibitors may be most effective with hypofractionated radiotherapy.
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152
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The therapeutic significance of mutational signatures from DNA repair deficiency in cancer. Nat Commun 2018; 9:3292. [PMID: 30120226 PMCID: PMC6098043 DOI: 10.1038/s41467-018-05228-y] [Citation(s) in RCA: 134] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2017] [Accepted: 06/15/2018] [Indexed: 12/19/2022] Open
Abstract
Cancer is fundamentally a disease of the genome and inherited deficiencies in DNA repair pathways are well established to increase lifetime cancer risk. Computational analysis of pan-cancer data has identified signatures of mutational processes thought to be responsible for the pattern of mutations in any given cancer. These analyses identified altered DNA repair pathways in a much broader spectrum of cancers than previously appreciated with significant therapeutic implications. The development of DNA repair deficiency biomarkers is critical to the implementation of therapeutic targeting of repair-deficient tumors, using either DNA damaging agents or immunotherapy for the personalization of cancer therapy. Targeting DNA repair-deficient tumors is one of the most promising therapeutic strategies in cancer research; however, accurately predicting which tumors will respond can be a challenge. Here the authors present a review of the current state of knowledge in DNA repair deficiency across human cancers.
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153
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Lezina L, Spriggs RV, Beck D, Jones C, Dudek KM, Bzura A, Jones GDD, Packham G, Willis AE, Wagner SD. CD40L/IL-4-stimulated CLL demonstrates variation in translational regulation of DNA damage response genes including ATM. Blood Adv 2018; 2:1869-1881. [PMID: 30082430 PMCID: PMC6093746 DOI: 10.1182/bloodadvances.2017015560] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2017] [Accepted: 07/06/2018] [Indexed: 02/07/2023] Open
Abstract
CD40L/interleukin-4 (IL-4) stimulation occurs in vivo in the tumor microenvironment and induces global translation to varying degrees in individuals with chronic lymphocytic leukemia (CLL) in vitro. However, the implications of CD40L/IL-4 for the translation of specific genes is not known. To determine the most highly translationally regulated genes in response to CD40L/IL-4, we carried out ribosome profiling, a next-generation sequencing method. Significant differences in the translational efficiency of DNA damage response genes, specifically ataxia-telangiectasia-mutated kinase (ATM) and the MRE11/RAD50/NBN (MRN) complex, were observed between patients, suggesting different patterns of translational regulation. We confirmed associations between CD40L/IL-4 response and baseline ATM levels, induction of ATM, and phosphorylation of the ATM targets, p53 and H2AX. X-irradiation was used to demonstrate that CD40L/IL-4 stimulation tended to improve DNA damage repair. Baseline ATM levels, independent of the presence of 11q deletion, correlated with overall survival (OS). Overall, we suggest that there are individual differences in translation of specific genes, including ATM, in response to CD40L/IL-4 and that these interpatient differences might be clinically important.
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Affiliation(s)
- Larissa Lezina
- Leicester Cancer Research Centre and
- Ernest and Helen Scott Haematology Research Institute, University of Leicester, Leicester, United Kingdom
| | - Ruth V Spriggs
- Medical Research Council Toxicology Unit, Leicester, United Kingdom; and
| | - Daniel Beck
- Leicester Cancer Research Centre and
- Ernest and Helen Scott Haematology Research Institute, University of Leicester, Leicester, United Kingdom
| | - Carolyn Jones
- Medical Research Council Toxicology Unit, Leicester, United Kingdom; and
| | - Kate M Dudek
- Medical Research Council Toxicology Unit, Leicester, United Kingdom; and
| | | | | | - Graham Packham
- Cancer Research UK Centre, Cancer Sciences Unit, Faculty of Medicine, University of Southampton, Southampton, United Kingdom
| | - Anne E Willis
- Medical Research Council Toxicology Unit, Leicester, United Kingdom; and
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154
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155
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Henssen AG, Reed C, Jiang E, Garcia HD, von Stebut J, MacArthur IC, Hundsdoerfer P, Kim JH, de Stanchina E, Kuwahara Y, Hosoi H, Ganem NJ, Dela Cruz F, Kung AL, Schulte JH, Petrini JH, Kentsis A. Therapeutic targeting of PGBD5-induced DNA repair dependency in pediatric solid tumors. Sci Transl Med 2018; 9:9/414/eaam9078. [PMID: 29093183 DOI: 10.1126/scitranslmed.aam9078] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Revised: 07/15/2017] [Accepted: 09/25/2017] [Indexed: 12/16/2022]
Abstract
Despite intense efforts, the cure rates of childhood and adult solid tumors are not satisfactory. Resistance to intensive chemotherapy is common, and targets for molecular therapies are largely undefined. We have found that the majority of childhood solid tumors, including rhabdoid tumors, neuroblastoma, medulloblastoma, and Ewing sarcoma, express an active DNA transposase, PGBD5, that can promote site-specific genomic rearrangements in human cells. Using functional genetic approaches, we discovered that mouse and human cells deficient in nonhomologous end joining (NHEJ) DNA repair cannot tolerate the expression of PGBD5. In a chemical screen of DNA damage signaling inhibitors, we identified AZD6738 as a specific sensitizer of PGBD5-dependent DNA damage and apoptosis. We found that expression of PGBD5, but not its nuclease activity-deficient mutant, was sufficient to induce sensitivity to AZD6738. Depletion of endogenous PGBD5 conferred resistance to AZD6738 in human tumor cells. PGBD5-expressing tumor cells accumulated unrepaired DNA damage in response to AZD6738 treatment and underwent apoptosis in both dividing and G1-phase cells in the absence of immediate DNA replication stress. Accordingly, AZD6738 exhibited nanomolar potency against most neuroblastoma, medulloblastoma, Ewing sarcoma, and rhabdoid tumor cells tested while sparing nontransformed human and mouse embryonic fibroblasts in vitro. Finally, treatment with AZD6738 induced apoptosis and regression of human neuroblastoma and medulloblastoma tumors engrafted in immunodeficient mice in vivo. This effect was potentiated by combined treatment with cisplatin, including substantial antitumor activity against patient-derived primary neuroblastoma xenografts. These findings delineate a therapeutically actionable synthetic dependency induced in PGBD5-expressing solid tumors.
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Affiliation(s)
- Anton G Henssen
- Molecular Pharmacology Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA.,Berlin Institute of Health, 10178 Berlin, Germany.,Department of Pediatric Oncology and Hematology, Charité-Universitätsmedizin Berlin, 10117 Berlin, Germany.,German Cancer Consortium (DKTK), 10117 Berlin, Germany
| | - Casie Reed
- Molecular Pharmacology Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Eileen Jiang
- Molecular Pharmacology Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Heathcliff Dorado Garcia
- Department of Pediatric Oncology and Hematology, Charité-Universitätsmedizin Berlin, 10117 Berlin, Germany
| | - Jennifer von Stebut
- Department of Pediatric Oncology and Hematology, Charité-Universitätsmedizin Berlin, 10117 Berlin, Germany
| | - Ian C MacArthur
- Molecular Pharmacology Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Patrick Hundsdoerfer
- Berlin Institute of Health, 10178 Berlin, Germany.,Department of Pediatric Oncology and Hematology, Charité-Universitätsmedizin Berlin, 10117 Berlin, Germany
| | - Jun Hyun Kim
- Molecular Biology Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Elisa de Stanchina
- Antitumor Assessment Core Facility, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Yasumichi Kuwahara
- Department of Biochemistry and Molecular Biology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Hajime Hosoi
- Department of Pediatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Neil J Ganem
- Section of Hematology and Medical Oncology, Department of Pharmacology, Boston University School of Medicine, Boston, MA 02215, USA
| | - Filemon Dela Cruz
- Department of Pediatrics, Weill Cornell Medical College of Cornell University and Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Andrew L Kung
- Department of Pediatrics, Weill Cornell Medical College of Cornell University and Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Johannes H Schulte
- Berlin Institute of Health, 10178 Berlin, Germany.,Department of Pediatric Oncology and Hematology, Charité-Universitätsmedizin Berlin, 10117 Berlin, Germany.,German Cancer Consortium (DKTK), 10117 Berlin, Germany.,Deutsches Krebsforschungszentrum Heidelberg, 69120 Heidelberg, Germany
| | - John H Petrini
- Molecular Biology Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Alex Kentsis
- Molecular Pharmacology Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA. .,Department of Pediatrics, Weill Cornell Medical College of Cornell University and Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
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156
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Shi Q, Shen LY, Dong B, Fu H, Kang XZ, Yang YB, Dai L, Yan WP, Xiong HC, Liang Z, Chen KN. The identification of the ATR inhibitor VE-822 as a therapeutic strategy for enhancing cisplatin chemosensitivity in esophageal squamous cell carcinoma. Cancer Lett 2018; 432:56-68. [PMID: 29890208 DOI: 10.1016/j.canlet.2018.06.010] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2018] [Revised: 05/12/2018] [Accepted: 06/06/2018] [Indexed: 12/11/2022]
Abstract
Inducing DNA damage is known to be one of the mechanisms of cytotoxic chemotherapy agents for cancer such as cisplatin. The endogenous DNA damage response confers chemoresistance to these agents by repairing DNA damage. The initiation and transduction of the DNA damage response (DDR) signaling pathway, which is dependent on the activation of ATM (ataxia-telangiectasia mutated) and ATR (ataxia telangiectasia and Rad3-related), is essential for DNA damage repair, the maintenance of genomic stability and cell survival. Therefore, ATM or ATR inhibition is considered as a promising strategy for sensitizing cancer cells to chemotherapy. This study is aimed to explore the effect of ATR inhibitor on sensitizing ESCC (esophageal squamous cell carcinoma) cells to cisplatin, and whether ATM deficiency could impact the sensitization. We found that 21.5% of ESCC cases had ATM deficiency and that patients with ATR activation after neoadjuvant chemotherapy had worse chemotherapy response and poorer overall survival than that without ATR activation (32 mons vs. >140mons). Then, it was shown that VE-822 inhibited ATR-CHK1 pathway activation, leading to the accumulation of cisplatin-modified DNA. And it inhibited cell proliferation, induced cell cycle arrest in G1 phase and enhanced cell apoptosis. Moreover, VE-822 significantly sensitized ESCC cells to cisplatin, and these two drugs had synergistic effects, especially in ATM-deficient cells, in vitro and in vivo. Our results suggest that ATR inhibition combining with cisplatin is a new strategy for managing patients with ESCC, especially those with ATM-deficiency. However, this is an idea that requires further validation.
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Affiliation(s)
- Qi Shi
- Department of Thoracic Surgery I, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital & Institute, Beijing, People's Republic of China
| | - Lu-Yan Shen
- Department of Thoracic Surgery I, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital & Institute, Beijing, People's Republic of China
| | - Bin Dong
- Department of Pathology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital & Institute, Beijing, People's Republic of China
| | - Hao Fu
- Department of Thoracic Surgery I, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital & Institute, Beijing, People's Republic of China
| | - Xiao-Zheng Kang
- Department of Thoracic Surgery I, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital & Institute, Beijing, People's Republic of China
| | - Yong-Bo Yang
- Department of Thoracic Surgery I, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital & Institute, Beijing, People's Republic of China
| | - Liang Dai
- Department of Thoracic Surgery I, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital & Institute, Beijing, People's Republic of China
| | - Wan-Pu Yan
- Department of Thoracic Surgery I, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital & Institute, Beijing, People's Republic of China
| | - Hong-Chao Xiong
- Department of Thoracic Surgery I, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital & Institute, Beijing, People's Republic of China
| | - Zhen Liang
- Department of Thoracic Surgery I, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital & Institute, Beijing, People's Republic of China
| | - Ke-Neng Chen
- Department of Thoracic Surgery I, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital & Institute, Beijing, People's Republic of China.
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157
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Komura K, Yoshikawa Y, Shimamura T, Chakraborty G, Gerke TA, Hinohara K, Chadalavada K, Jeong SH, Armenia J, Du SY, Mazzu YZ, Taniguchi K, Ibuki N, Meyer CA, Nanjangud GJ, Inamoto T, Lee GSM, Mucci LA, Azuma H, Sweeney CJ, Kantoff PW. ATR inhibition controls aggressive prostate tumors deficient in Y-linked histone demethylase KDM5D. J Clin Invest 2018; 128:2979-2995. [PMID: 29863497 DOI: 10.1172/jci96769] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Accepted: 04/12/2018] [Indexed: 12/20/2022] Open
Abstract
Epigenetic modifications control cancer development and clonal evolution in various cancer types. Here, we show that loss of the male-specific histone demethylase lysine-specific demethylase 5D (KDM5D) encoded on the Y chromosome epigenetically modifies histone methylation marks and alters gene expression, resulting in aggressive prostate cancer. Fluorescent in situ hybridization demonstrated that segmental or total deletion of the Y chromosome in prostate cancer cells is one of the causes of decreased KDM5D mRNA expression. The result of ChIP-sequencing analysis revealed that KDM5D preferably binds to promoter regions with coenrichment of the motifs of crucial transcription factors that regulate the cell cycle. Loss of KDM5D expression with dysregulated H3K4me3 transcriptional marks was associated with acceleration of the cell cycle and mitotic entry, leading to increased DNA-replication stress. Analysis of multiple clinical data sets reproducibly showed that loss of expression of KDM5D confers a poorer prognosis. Notably, we also found stress-induced DNA damage on the serine/threonine protein kinase ATR with loss of KDM5D. In KDM5D-deficient cells, blocking ATR activity with an ATR inhibitor enhanced DNA damage, which led to subsequent apoptosis. These data start to elucidate the biological characteristics resulting from loss of KDM5D and also provide clues for a potential novel therapeutic approach for this subset of aggressive prostate cancer.
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Affiliation(s)
- Kazumasa Komura
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York, USA.,Department of Urology and.,Translational Research Program, Osaka Medical College, Osaka, Japan
| | - Yuki Yoshikawa
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York, USA.,Department of Urology and
| | - Teppei Shimamura
- Division of Systems Biology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Goutam Chakraborty
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Travis A Gerke
- Department of Cancer Epidemiology, Moffitt Cancer Center, Tampa, Florida, USA
| | - Kunihiko Hinohara
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts, USA
| | - Kalyani Chadalavada
- Molecular Cytogenetics Core, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Seong Ho Jeong
- Department of Medicine, Penn State College of Medicine, Hershey, Pennsylvania, USA
| | - Joshua Armenia
- Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Shin-Yi Du
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Ying Z Mazzu
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Kohei Taniguchi
- Translational Research Program, Osaka Medical College, Osaka, Japan.,Department of General and Gastroenterological Surgery, Osaka Medical College, Osaka, Japan
| | | | - Clifford A Meyer
- Department of Biostatistics and Computational Biology, Dana-Farber Cancer Institute and Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA
| | - Gouri J Nanjangud
- Molecular Cytogenetics Core, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | | | - Gwo-Shu Mary Lee
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts, USA
| | - Lorelei A Mucci
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA
| | | | - Christopher J Sweeney
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts, USA
| | - Philip W Kantoff
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York, USA
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158
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Desai A, Yan Y, Gerson SL. Advances in therapeutic targeting of the DNA damage response in cancer. DNA Repair (Amst) 2018; 66-67:24-29. [PMID: 29715575 PMCID: PMC6005187 DOI: 10.1016/j.dnarep.2018.04.004] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Accepted: 04/21/2018] [Indexed: 01/13/2023]
Abstract
The DNA damage response (DDR) is a series of pathways and processes required to repair lesions to DNA. These pathways range from repairing strand breaks to the double helix, damaged bases formed after oxidation or deamination, inaccurate DNA replication resulting in mispaired base alignment, intrastrand crosslinks that trigger cell death, and a plethora of other genomic insults. The DDR is believed to be a critical component of radio and chemoresistance in many cancers as well, with the tumor's ability to repair therapy induced damage being an important tool used to survive traditional chemotherapeutic agents. Here we summarize advances made in specifically targeting DDR proteins in cancer therapy and project on the potential breakthroughs and pitfalls to arise as the field progresses.
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Affiliation(s)
- Amar Desai
- Department of Medicine, Case Western Reserve University, Cleveland, OH 44106, USA; Case Comprehensive Cancer Center, Case Western Reserve University, Cleveland, OH 44106, USA
| | - Yan Yan
- Department of Medicine, Case Western Reserve University, Cleveland, OH 44106, USA; Case Comprehensive Cancer Center, Case Western Reserve University, Cleveland, OH 44106, USA
| | - Stanton L Gerson
- Department of Medicine, Case Western Reserve University, Cleveland, OH 44106, USA; Case Comprehensive Cancer Center, Case Western Reserve University, Cleveland, OH 44106, USA.
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159
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Thomas A, Redon CE, Sciuto L, Padiernos E, Ji J, Lee MJ, Yuno A, Lee S, Zhang Y, Tran L, Yutzy W, Rajan A, Guha U, Chen H, Hassan R, Alewine CC, Szabo E, Bates SE, Kinders RJ, Steinberg SM, Doroshow JH, Aladjem MI, Trepel JB, Pommier Y. Phase I Study of ATR Inhibitor M6620 in Combination With Topotecan in Patients With Advanced Solid Tumors. J Clin Oncol 2018; 36:1594-1602. [PMID: 29252124 PMCID: PMC5978471 DOI: 10.1200/jco.2017.76.6915] [Citation(s) in RCA: 109] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Purpose Our preclinical work identified depletion of ATR as a top candidate for topoisomerase 1 (TOP1) inhibitor synthetic lethality and showed that ATR inhibition sensitizes tumors to TOP1 inhibitors. We hypothesized that a combination of selective ATR inhibitor M6620 (previously VX-970) and topotecan, a selective TOP1 inhibitor, would be tolerable and active, particularly in tumors with high replicative stress. Patients and Methods This phase I study tested the combination of M6620 and topotecan in 3-week cycles using 3 + 3 dose escalation. The primary end point was the identification of the maximum tolerated dose of the combination. Efficacy and pharmacodynamics were secondary end points. Results Between September 2016 and February 2017, 21 patients enrolled. The combination was well tolerated, which allowed for dose escalation to the highest planned dose level (topotecan 1.25 mg/m2, days 1 to 5; M6620 210 mg/m2, days 2 and 5). One of six patients at this dose level experienced grade 4 thrombocytopenia that required transfusion, a dose-limiting toxicity. Most common treatment-related grade 3 or 4 toxicities were anemia, leukopenia, and neutropenia (19% each); lymphopenia (14%); and thrombocytopenia (10%). Two partial responses (≥ 18 months, ≥ 7 months) and seven stable disease responses ≥ 3 months (median, 9 months; range, 3 to 12 months) were seen. Three of five patients with small-cell lung cancer, all of whom had platinum-refractory disease, had a partial response or prolonged stable disease (10, ≥ 6, and ≥ 7 months). Pharmacodynamic studies showed preliminary evidence of ATR inhibition and enhanced DNA double-stranded breaks in response to the combination. Conclusion To our knowledge, this report is the first of an ATR inhibitor-chemotherapy combination. The maximum dose of topotecan plus M6620 is tolerable. The combination seems particularly active in platinum-refractory small-cell lung cancer, which tends not to respond to topotecan alone. Phase II studies with biomarker evaluation are ongoing.
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Affiliation(s)
- Anish Thomas
- Anish Thomas, Christophe E. Redon, Linda Sciuto, Emerson Padiernos, Min-Jung Lee, Akira Yuno, Sunmin Lee, Arun Rajan, Udayan Guha, Haobin Chen, Raffit Hassan, Christine C. Alewine, Eva Szabo, Seth M. Steinberg, James H. Doroshow, Mirit I. Aladjem, Jane B. Trepel, and Yves Pommier, National Cancer Institute, Bethesda; Jiuping Ji, Yiping Zhang, Lan Tran, William Yutzy, and Robert J. Kinders, Frederick National Laboratory for Cancer Research, Frederick, MD; and Susan E. Bates, Columbia University Medical Center, New York, NY
| | - Christophe E. Redon
- Anish Thomas, Christophe E. Redon, Linda Sciuto, Emerson Padiernos, Min-Jung Lee, Akira Yuno, Sunmin Lee, Arun Rajan, Udayan Guha, Haobin Chen, Raffit Hassan, Christine C. Alewine, Eva Szabo, Seth M. Steinberg, James H. Doroshow, Mirit I. Aladjem, Jane B. Trepel, and Yves Pommier, National Cancer Institute, Bethesda; Jiuping Ji, Yiping Zhang, Lan Tran, William Yutzy, and Robert J. Kinders, Frederick National Laboratory for Cancer Research, Frederick, MD; and Susan E. Bates, Columbia University Medical Center, New York, NY
| | - Linda Sciuto
- Anish Thomas, Christophe E. Redon, Linda Sciuto, Emerson Padiernos, Min-Jung Lee, Akira Yuno, Sunmin Lee, Arun Rajan, Udayan Guha, Haobin Chen, Raffit Hassan, Christine C. Alewine, Eva Szabo, Seth M. Steinberg, James H. Doroshow, Mirit I. Aladjem, Jane B. Trepel, and Yves Pommier, National Cancer Institute, Bethesda; Jiuping Ji, Yiping Zhang, Lan Tran, William Yutzy, and Robert J. Kinders, Frederick National Laboratory for Cancer Research, Frederick, MD; and Susan E. Bates, Columbia University Medical Center, New York, NY
| | - Emerson Padiernos
- Anish Thomas, Christophe E. Redon, Linda Sciuto, Emerson Padiernos, Min-Jung Lee, Akira Yuno, Sunmin Lee, Arun Rajan, Udayan Guha, Haobin Chen, Raffit Hassan, Christine C. Alewine, Eva Szabo, Seth M. Steinberg, James H. Doroshow, Mirit I. Aladjem, Jane B. Trepel, and Yves Pommier, National Cancer Institute, Bethesda; Jiuping Ji, Yiping Zhang, Lan Tran, William Yutzy, and Robert J. Kinders, Frederick National Laboratory for Cancer Research, Frederick, MD; and Susan E. Bates, Columbia University Medical Center, New York, NY
| | - Jiuping Ji
- Anish Thomas, Christophe E. Redon, Linda Sciuto, Emerson Padiernos, Min-Jung Lee, Akira Yuno, Sunmin Lee, Arun Rajan, Udayan Guha, Haobin Chen, Raffit Hassan, Christine C. Alewine, Eva Szabo, Seth M. Steinberg, James H. Doroshow, Mirit I. Aladjem, Jane B. Trepel, and Yves Pommier, National Cancer Institute, Bethesda; Jiuping Ji, Yiping Zhang, Lan Tran, William Yutzy, and Robert J. Kinders, Frederick National Laboratory for Cancer Research, Frederick, MD; and Susan E. Bates, Columbia University Medical Center, New York, NY
| | - Min-Jung Lee
- Anish Thomas, Christophe E. Redon, Linda Sciuto, Emerson Padiernos, Min-Jung Lee, Akira Yuno, Sunmin Lee, Arun Rajan, Udayan Guha, Haobin Chen, Raffit Hassan, Christine C. Alewine, Eva Szabo, Seth M. Steinberg, James H. Doroshow, Mirit I. Aladjem, Jane B. Trepel, and Yves Pommier, National Cancer Institute, Bethesda; Jiuping Ji, Yiping Zhang, Lan Tran, William Yutzy, and Robert J. Kinders, Frederick National Laboratory for Cancer Research, Frederick, MD; and Susan E. Bates, Columbia University Medical Center, New York, NY
| | - Akira Yuno
- Anish Thomas, Christophe E. Redon, Linda Sciuto, Emerson Padiernos, Min-Jung Lee, Akira Yuno, Sunmin Lee, Arun Rajan, Udayan Guha, Haobin Chen, Raffit Hassan, Christine C. Alewine, Eva Szabo, Seth M. Steinberg, James H. Doroshow, Mirit I. Aladjem, Jane B. Trepel, and Yves Pommier, National Cancer Institute, Bethesda; Jiuping Ji, Yiping Zhang, Lan Tran, William Yutzy, and Robert J. Kinders, Frederick National Laboratory for Cancer Research, Frederick, MD; and Susan E. Bates, Columbia University Medical Center, New York, NY
| | - Sunmin Lee
- Anish Thomas, Christophe E. Redon, Linda Sciuto, Emerson Padiernos, Min-Jung Lee, Akira Yuno, Sunmin Lee, Arun Rajan, Udayan Guha, Haobin Chen, Raffit Hassan, Christine C. Alewine, Eva Szabo, Seth M. Steinberg, James H. Doroshow, Mirit I. Aladjem, Jane B. Trepel, and Yves Pommier, National Cancer Institute, Bethesda; Jiuping Ji, Yiping Zhang, Lan Tran, William Yutzy, and Robert J. Kinders, Frederick National Laboratory for Cancer Research, Frederick, MD; and Susan E. Bates, Columbia University Medical Center, New York, NY
| | - Yiping Zhang
- Anish Thomas, Christophe E. Redon, Linda Sciuto, Emerson Padiernos, Min-Jung Lee, Akira Yuno, Sunmin Lee, Arun Rajan, Udayan Guha, Haobin Chen, Raffit Hassan, Christine C. Alewine, Eva Szabo, Seth M. Steinberg, James H. Doroshow, Mirit I. Aladjem, Jane B. Trepel, and Yves Pommier, National Cancer Institute, Bethesda; Jiuping Ji, Yiping Zhang, Lan Tran, William Yutzy, and Robert J. Kinders, Frederick National Laboratory for Cancer Research, Frederick, MD; and Susan E. Bates, Columbia University Medical Center, New York, NY
| | - Lan Tran
- Anish Thomas, Christophe E. Redon, Linda Sciuto, Emerson Padiernos, Min-Jung Lee, Akira Yuno, Sunmin Lee, Arun Rajan, Udayan Guha, Haobin Chen, Raffit Hassan, Christine C. Alewine, Eva Szabo, Seth M. Steinberg, James H. Doroshow, Mirit I. Aladjem, Jane B. Trepel, and Yves Pommier, National Cancer Institute, Bethesda; Jiuping Ji, Yiping Zhang, Lan Tran, William Yutzy, and Robert J. Kinders, Frederick National Laboratory for Cancer Research, Frederick, MD; and Susan E. Bates, Columbia University Medical Center, New York, NY
| | - William Yutzy
- Anish Thomas, Christophe E. Redon, Linda Sciuto, Emerson Padiernos, Min-Jung Lee, Akira Yuno, Sunmin Lee, Arun Rajan, Udayan Guha, Haobin Chen, Raffit Hassan, Christine C. Alewine, Eva Szabo, Seth M. Steinberg, James H. Doroshow, Mirit I. Aladjem, Jane B. Trepel, and Yves Pommier, National Cancer Institute, Bethesda; Jiuping Ji, Yiping Zhang, Lan Tran, William Yutzy, and Robert J. Kinders, Frederick National Laboratory for Cancer Research, Frederick, MD; and Susan E. Bates, Columbia University Medical Center, New York, NY
| | - Arun Rajan
- Anish Thomas, Christophe E. Redon, Linda Sciuto, Emerson Padiernos, Min-Jung Lee, Akira Yuno, Sunmin Lee, Arun Rajan, Udayan Guha, Haobin Chen, Raffit Hassan, Christine C. Alewine, Eva Szabo, Seth M. Steinberg, James H. Doroshow, Mirit I. Aladjem, Jane B. Trepel, and Yves Pommier, National Cancer Institute, Bethesda; Jiuping Ji, Yiping Zhang, Lan Tran, William Yutzy, and Robert J. Kinders, Frederick National Laboratory for Cancer Research, Frederick, MD; and Susan E. Bates, Columbia University Medical Center, New York, NY
| | - Udayan Guha
- Anish Thomas, Christophe E. Redon, Linda Sciuto, Emerson Padiernos, Min-Jung Lee, Akira Yuno, Sunmin Lee, Arun Rajan, Udayan Guha, Haobin Chen, Raffit Hassan, Christine C. Alewine, Eva Szabo, Seth M. Steinberg, James H. Doroshow, Mirit I. Aladjem, Jane B. Trepel, and Yves Pommier, National Cancer Institute, Bethesda; Jiuping Ji, Yiping Zhang, Lan Tran, William Yutzy, and Robert J. Kinders, Frederick National Laboratory for Cancer Research, Frederick, MD; and Susan E. Bates, Columbia University Medical Center, New York, NY
| | - Haobin Chen
- Anish Thomas, Christophe E. Redon, Linda Sciuto, Emerson Padiernos, Min-Jung Lee, Akira Yuno, Sunmin Lee, Arun Rajan, Udayan Guha, Haobin Chen, Raffit Hassan, Christine C. Alewine, Eva Szabo, Seth M. Steinberg, James H. Doroshow, Mirit I. Aladjem, Jane B. Trepel, and Yves Pommier, National Cancer Institute, Bethesda; Jiuping Ji, Yiping Zhang, Lan Tran, William Yutzy, and Robert J. Kinders, Frederick National Laboratory for Cancer Research, Frederick, MD; and Susan E. Bates, Columbia University Medical Center, New York, NY
| | - Raffit Hassan
- Anish Thomas, Christophe E. Redon, Linda Sciuto, Emerson Padiernos, Min-Jung Lee, Akira Yuno, Sunmin Lee, Arun Rajan, Udayan Guha, Haobin Chen, Raffit Hassan, Christine C. Alewine, Eva Szabo, Seth M. Steinberg, James H. Doroshow, Mirit I. Aladjem, Jane B. Trepel, and Yves Pommier, National Cancer Institute, Bethesda; Jiuping Ji, Yiping Zhang, Lan Tran, William Yutzy, and Robert J. Kinders, Frederick National Laboratory for Cancer Research, Frederick, MD; and Susan E. Bates, Columbia University Medical Center, New York, NY
| | - Christine C. Alewine
- Anish Thomas, Christophe E. Redon, Linda Sciuto, Emerson Padiernos, Min-Jung Lee, Akira Yuno, Sunmin Lee, Arun Rajan, Udayan Guha, Haobin Chen, Raffit Hassan, Christine C. Alewine, Eva Szabo, Seth M. Steinberg, James H. Doroshow, Mirit I. Aladjem, Jane B. Trepel, and Yves Pommier, National Cancer Institute, Bethesda; Jiuping Ji, Yiping Zhang, Lan Tran, William Yutzy, and Robert J. Kinders, Frederick National Laboratory for Cancer Research, Frederick, MD; and Susan E. Bates, Columbia University Medical Center, New York, NY
| | - Eva Szabo
- Anish Thomas, Christophe E. Redon, Linda Sciuto, Emerson Padiernos, Min-Jung Lee, Akira Yuno, Sunmin Lee, Arun Rajan, Udayan Guha, Haobin Chen, Raffit Hassan, Christine C. Alewine, Eva Szabo, Seth M. Steinberg, James H. Doroshow, Mirit I. Aladjem, Jane B. Trepel, and Yves Pommier, National Cancer Institute, Bethesda; Jiuping Ji, Yiping Zhang, Lan Tran, William Yutzy, and Robert J. Kinders, Frederick National Laboratory for Cancer Research, Frederick, MD; and Susan E. Bates, Columbia University Medical Center, New York, NY
| | - Susan E. Bates
- Anish Thomas, Christophe E. Redon, Linda Sciuto, Emerson Padiernos, Min-Jung Lee, Akira Yuno, Sunmin Lee, Arun Rajan, Udayan Guha, Haobin Chen, Raffit Hassan, Christine C. Alewine, Eva Szabo, Seth M. Steinberg, James H. Doroshow, Mirit I. Aladjem, Jane B. Trepel, and Yves Pommier, National Cancer Institute, Bethesda; Jiuping Ji, Yiping Zhang, Lan Tran, William Yutzy, and Robert J. Kinders, Frederick National Laboratory for Cancer Research, Frederick, MD; and Susan E. Bates, Columbia University Medical Center, New York, NY
| | - Robert J. Kinders
- Anish Thomas, Christophe E. Redon, Linda Sciuto, Emerson Padiernos, Min-Jung Lee, Akira Yuno, Sunmin Lee, Arun Rajan, Udayan Guha, Haobin Chen, Raffit Hassan, Christine C. Alewine, Eva Szabo, Seth M. Steinberg, James H. Doroshow, Mirit I. Aladjem, Jane B. Trepel, and Yves Pommier, National Cancer Institute, Bethesda; Jiuping Ji, Yiping Zhang, Lan Tran, William Yutzy, and Robert J. Kinders, Frederick National Laboratory for Cancer Research, Frederick, MD; and Susan E. Bates, Columbia University Medical Center, New York, NY
| | - Seth M. Steinberg
- Anish Thomas, Christophe E. Redon, Linda Sciuto, Emerson Padiernos, Min-Jung Lee, Akira Yuno, Sunmin Lee, Arun Rajan, Udayan Guha, Haobin Chen, Raffit Hassan, Christine C. Alewine, Eva Szabo, Seth M. Steinberg, James H. Doroshow, Mirit I. Aladjem, Jane B. Trepel, and Yves Pommier, National Cancer Institute, Bethesda; Jiuping Ji, Yiping Zhang, Lan Tran, William Yutzy, and Robert J. Kinders, Frederick National Laboratory for Cancer Research, Frederick, MD; and Susan E. Bates, Columbia University Medical Center, New York, NY
| | - James H. Doroshow
- Anish Thomas, Christophe E. Redon, Linda Sciuto, Emerson Padiernos, Min-Jung Lee, Akira Yuno, Sunmin Lee, Arun Rajan, Udayan Guha, Haobin Chen, Raffit Hassan, Christine C. Alewine, Eva Szabo, Seth M. Steinberg, James H. Doroshow, Mirit I. Aladjem, Jane B. Trepel, and Yves Pommier, National Cancer Institute, Bethesda; Jiuping Ji, Yiping Zhang, Lan Tran, William Yutzy, and Robert J. Kinders, Frederick National Laboratory for Cancer Research, Frederick, MD; and Susan E. Bates, Columbia University Medical Center, New York, NY
| | - Mirit I. Aladjem
- Anish Thomas, Christophe E. Redon, Linda Sciuto, Emerson Padiernos, Min-Jung Lee, Akira Yuno, Sunmin Lee, Arun Rajan, Udayan Guha, Haobin Chen, Raffit Hassan, Christine C. Alewine, Eva Szabo, Seth M. Steinberg, James H. Doroshow, Mirit I. Aladjem, Jane B. Trepel, and Yves Pommier, National Cancer Institute, Bethesda; Jiuping Ji, Yiping Zhang, Lan Tran, William Yutzy, and Robert J. Kinders, Frederick National Laboratory for Cancer Research, Frederick, MD; and Susan E. Bates, Columbia University Medical Center, New York, NY
| | - Jane B. Trepel
- Anish Thomas, Christophe E. Redon, Linda Sciuto, Emerson Padiernos, Min-Jung Lee, Akira Yuno, Sunmin Lee, Arun Rajan, Udayan Guha, Haobin Chen, Raffit Hassan, Christine C. Alewine, Eva Szabo, Seth M. Steinberg, James H. Doroshow, Mirit I. Aladjem, Jane B. Trepel, and Yves Pommier, National Cancer Institute, Bethesda; Jiuping Ji, Yiping Zhang, Lan Tran, William Yutzy, and Robert J. Kinders, Frederick National Laboratory for Cancer Research, Frederick, MD; and Susan E. Bates, Columbia University Medical Center, New York, NY
| | - Yves Pommier
- Anish Thomas, Christophe E. Redon, Linda Sciuto, Emerson Padiernos, Min-Jung Lee, Akira Yuno, Sunmin Lee, Arun Rajan, Udayan Guha, Haobin Chen, Raffit Hassan, Christine C. Alewine, Eva Szabo, Seth M. Steinberg, James H. Doroshow, Mirit I. Aladjem, Jane B. Trepel, and Yves Pommier, National Cancer Institute, Bethesda; Jiuping Ji, Yiping Zhang, Lan Tran, William Yutzy, and Robert J. Kinders, Frederick National Laboratory for Cancer Research, Frederick, MD; and Susan E. Bates, Columbia University Medical Center, New York, NY
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Genetic alterations crossing the borders of distinct hematopoetic lineages and solid tumors: Diagnostic challenges in the era of high-throughput sequencing in hemato-oncology. Crit Rev Oncol Hematol 2018; 126:64-79. [DOI: 10.1016/j.critrevonc.2018.03.020] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Revised: 03/03/2018] [Accepted: 03/25/2018] [Indexed: 02/07/2023] Open
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161
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Zhou K, Zhang W, Zhang Q, Gui R, Zhao H, Chai X, Li Y, Wei X, Song Y. Loss of thyroid hormone receptor interactor 13 inhibits cell proliferation and survival in human chronic lymphocytic leukemia. Oncotarget 2018; 8:25469-25481. [PMID: 28424416 PMCID: PMC5421944 DOI: 10.18632/oncotarget.16038] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Accepted: 02/07/2017] [Indexed: 12/13/2022] Open
Abstract
Background The genetic regulation of apoptosis and cell proliferation plays a role in the growth of chronic lymphocytic leukemia (CLL), the most common form of leukemia in the Western hemisphere. Although thyroid hormone receptor interactors (TRIPs) are known to play roles in cell cycle, the potential involvement of the novel family member TRIP13 in CLL has not yet been investigated. Methods Quantitative PCR (qPCR) was used to detect expression of TRIP13 in 36 CLL patients and 33 healthy donors CD19+ B cells. Loss-of-function (siRNA) assays were used to alter TRIP13 expression levels. The effect of TRIP13 on cell proliferation and apoptosis was measured by MTT, Annexin V-based flow cytometry and Caspase 3/7 activity assay. Affymetrix GeneChip and Ingenuity Pathway Analysis (IPA) were used to describe an overview of TRIP13 potential biological function and downstream pathways. Dual-luciferase reporter assay was performed to assess the promoting effect of c-MYC on TRIP13 transcription. RESULTS The qPCR data showed that TRIP13 is significantly over-expressed in CLL patients. Microarray analyses indicated that the biological function of TRIP13 in CLL is majorly cell apoptosis and cell proliferation associated. TRIP13 siRNA expressing cells exhibited a slower cell proliferation rate and underwent apoptosis compared with control cells. TRIP13 knockdown induced CLL cells apoptosis through PUMA independent of p53. TRIP13 up-regulation is induced by c-MYC dependent transcriptional activation. Conclusion Overall, our data suggest the bio-function of TRIP13 in CLL cell for the first time, and that this gene might be a therapeutic target for CLL.
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Affiliation(s)
- Keshu Zhou
- Department of Hematology, Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou, People's Republic of China
| | - Wentao Zhang
- Armed Police Forces Hospital of Henan, People's Republic of China
| | - Qing Zhang
- Department of Hematology, Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou, People's Republic of China
| | - Ruirui Gui
- Department of Hematology, Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou, People's Republic of China
| | - Huifang Zhao
- Department of Hematology, Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou, People's Republic of China
| | - Xiaofei Chai
- Department of Hematology, Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou, People's Republic of China
| | - Yufu Li
- Department of Hematology, Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou, People's Republic of China
| | - Xudong Wei
- Department of Hematology, Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou, People's Republic of China
| | - Yongping Song
- Department of Hematology, Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou, People's Republic of China
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162
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Zemanova J, Hylse O, Collakova J, Vesely P, Oltova A, Borsky M, Zaprazna K, Kasparkova M, Janovska P, Verner J, Kohoutek J, Dzimkova M, Bryja V, Jaskova Z, Brychtova Y, Paruch K, Trbusek M. Chk1 inhibition significantly potentiates activity of nucleoside analogs in TP53-mutated B-lymphoid cells. Oncotarget 2018; 7:62091-62106. [PMID: 27556692 PMCID: PMC5308713 DOI: 10.18632/oncotarget.11388] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2016] [Accepted: 08/08/2016] [Indexed: 12/13/2022] Open
Abstract
Treatment options for TP53-mutated lymphoid tumors are very limited. In experimental models, TP53-mutated lymphomas were sensitive to direct inhibition of checkpoint kinase 1 (Chk1), a pivotal regulator of replication. We initially tested the potential of the highly specific Chk1 inhibitor SCH900776 to synergize with nucleoside analogs (NAs) fludarabine, cytarabine and gemcitabine in cell lines derived from B-cell malignancies. In p53-proficient NALM-6 cells, SCH900776 added to NAs enhanced signaling towards Chk1 (pSer317/pSer345), effectively blocked Chk1 activation (Ser296 autophosphorylation), increased replication stress (p53 and γ-H2AX accumulation) and temporarily potentiated apoptosis. In p53-defective MEC-1 cell line representing adverse chronic lymphocytic leukemia (CLL), Chk1 inhibition together with NAs led to enhanced and sustained replication stress and significantly potentiated apoptosis. Altogether, among 17 tested cell lines SCH900776 sensitized four of them to all three NAs. Focusing further on MEC-1 and co-treatment of SCH900776 with fludarabine, we disclosed chromosome pulverization in cells undergoing aberrant mitoses. SCH900776 also increased the effect of fludarabine in a proportion of primary CLL samples treated with pro-proliferative stimuli, including those with TP53 disruption. Finally, we observed a fludarabine potentiation by SCH900776 in a T-cell leukemia 1 (TCL1)-driven mouse model of CLL. Collectively, we have substantiated the significant potential of Chk1 inhibition in B-lymphoid cells.
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Affiliation(s)
- Jana Zemanova
- Department of Internal Medicine - Hematology and Oncology, University Hospital Brno and Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Ondrej Hylse
- Center of Biomolecular and Cellular Engineering, International Clinical Research Center, St. Anne's University Hospital, Brno, Czech Republic.,Department of Chemistry, CZ Openscreen, Faculty of Science, Masaryk University, Brno, Czech Republic
| | - Jana Collakova
- Institute of Physical Engineering, Faculty of Mechanical Engineering, Brno University of Technology, Brno, Czech Republic.,CEITEC - Central European Institute of Technology, Brno University of Technology, Brno, Czech Republic
| | - Pavel Vesely
- CEITEC - Central European Institute of Technology, Brno University of Technology, Brno, Czech Republic
| | - Alexandra Oltova
- Department of Internal Medicine - Hematology and Oncology, University Hospital Brno and Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Marek Borsky
- Department of Internal Medicine - Hematology and Oncology, University Hospital Brno and Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Kristina Zaprazna
- CEITEC - Central European Institute of Technology, Masaryk University, Brno, Czech Republic
| | - Marie Kasparkova
- Department of Internal Medicine - Hematology and Oncology, University Hospital Brno and Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Pavlina Janovska
- Institute of Experimental Biology, Faculty of Science, Masaryk University, Brno, Czech Republic
| | - Jan Verner
- Department of Internal Medicine - Hematology and Oncology, University Hospital Brno and Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Jiri Kohoutek
- Department of Chemistry and Toxicology, Veterinary Research Institute, Brno, Czech Republic
| | - Marta Dzimkova
- Department of Chemistry and Toxicology, Veterinary Research Institute, Brno, Czech Republic
| | - Vitezslav Bryja
- Institute of Experimental Biology, Faculty of Science, Masaryk University, Brno, Czech Republic.,Department of Cytokinetics, Institute of Biophysics, Academy of Sciences of the Czech Republic, Brno, Czech Republic
| | - Zuzana Jaskova
- Department of Internal Medicine - Hematology and Oncology, University Hospital Brno and Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Yvona Brychtova
- Department of Internal Medicine - Hematology and Oncology, University Hospital Brno and Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Kamil Paruch
- Center of Biomolecular and Cellular Engineering, International Clinical Research Center, St. Anne's University Hospital, Brno, Czech Republic.,Department of Chemistry, CZ Openscreen, Faculty of Science, Masaryk University, Brno, Czech Republic
| | - Martin Trbusek
- Department of Internal Medicine - Hematology and Oncology, University Hospital Brno and Faculty of Medicine, Masaryk University, Brno, Czech Republic
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163
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ATM inhibition induces synthetic lethality and enhances sensitivity of PTEN-deficient breast cancer cells to cisplatin. Exp Cell Res 2018. [PMID: 29522753 DOI: 10.1016/j.yexcr.2018.03.006] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
PTEN deficiency often causes defects in DNA damage repair. Currently, effective therapies for breast cancer are lacking. ATM is an attractive target for cancer treatment. Previous studies suggested a synthetic lethality between PTEN and PARP. However, the synthetically lethal interaction between PTEN and ATM in breast cancer has not been reported. Moreover, the mechanism remains elusive. Here, using KU-60019, an ATM kinase inhibitor, we investigated ATM inhibition as a synthetically lethal strategy to target breast cancer cells with PTEN defects. We found that KU-60019 preferentially sensitizes PTEN-deficient MDA-MB-468 breast cancer cells to cisplatin, though it also slightly enhances sensitivity of PTEN wild-type breast cancer cells. The increased cytotoxic sensitivity is associated with apoptosis, as evidenced by flow cytometry and PARP cleavage. Additionally, the increase of DNA damage accumulation due to the decreased capability of DNA repair, as indicated by γ-H2AX and Rad51 foci, also contributed to this selective cytotoxicity. Mechanistically, compared with PTEN wild-type MDA-MB-231 cells, PTEN-deficient MDA-MB-468 cells have lower level of Rad51, higher ATM kinase activity, and display the elevated level of DNA damage. Moreover, these differences could be further enlarged by cisplatin. Our findings suggest that ATM is a promising target for PTEN-defective breast cancer.
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164
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Villaruz LC, Jones H, Dacic S, Abberbock S, Kurland BF, Stabile LP, Siegfried JM, Conrads TP, Smith NR, O'Connor MJ, Pierce AJ, Bakkenist CJ. ATM protein is deficient in over 40% of lung adenocarcinomas. Oncotarget 2018; 7:57714-57725. [PMID: 27259260 PMCID: PMC5295384 DOI: 10.18632/oncotarget.9757] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Accepted: 04/28/2016] [Indexed: 12/16/2022] Open
Abstract
Lung cancer is the leading cause of cancer-related mortality in the USA and worldwide, and of the estimated 1.2 million new cases of lung cancer diagnosed every year, over 30% are lung adenocarcinomas. The backbone of 1st-line systemic therapy in the metastatic setting, in the absence of an actionable oncogenic driver, is platinum-based chemotherapy. ATM and ATR are DNA damage signaling kinases activated at DNA double-strand breaks (DSBs) and stalled and collapsed replication forks, respectively. ATM protein is lost in a number of cancer cell lines and ATR kinase inhibitors synergize with cisplatin to resolve xenograft models of ATM-deficient lung cancer. We therefore sought to determine the frequency of ATM loss in a tissue microarray (TMA) of lung adenocarcinoma. Here we report the validation of a commercial antibody (ab32420) for the identification of ATM by immunohistochemistry and estimate that 61 of 147 (41%, 95% CI 34%-50%) cases of lung adenocarcinoma are negative for ATM protein expression. As a positive control for ATM staining, nuclear ATM protein was identified in stroma and immune infiltrate in all evaluable cases. ATM loss in lung adenocarcinoma was not associated with overall survival. However, our preclinical findings in ATM-deficient cell lines suggest that ATM could be a predictive biomarker for synergy of an ATR kinase inhibitor with standard-of-care cisplatin. This could improve clinical outcome in 100,000's of patients with ATM-deficient lung adenocarcinoma every year.
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Affiliation(s)
- Liza C Villaruz
- University of Pittsburgh Cancer Institute, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | | | - Sanja Dacic
- Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Shira Abberbock
- University of Pittsburgh Cancer Institute, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Brenda F Kurland
- University of Pittsburgh Cancer Institute, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA.,Department of Biostatistics, University of Pittsburgh School of Public Health, Pittsburgh, PA, USA
| | - Laura P Stabile
- Department of Pharmacology and Chemical Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Jill M Siegfried
- Department of Pharmacology, University of Minnesota, Minneapolis, MN, USA
| | - Thomas P Conrads
- Inova Schar Cancer Institute, Inova Center for Personalized Health, Falls Church, VA, USA
| | | | | | | | - Christopher J Bakkenist
- Department of Pharmacology and Chemical Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA.,Department of Radiation Oncology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
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165
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Al-Subhi N, Ali R, Abdel-Fatah T, Moseley PM, Chan SYT, Green AR, Ellis IO, Rakha EA, Madhusudan S. Targeting ataxia telangiectasia-mutated- and Rad3-related kinase (ATR) in PTEN-deficient breast cancers for personalized therapy. Breast Cancer Res Treat 2018; 169:277-286. [PMID: 29396668 PMCID: PMC5945733 DOI: 10.1007/s10549-018-4683-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2018] [Accepted: 01/18/2018] [Indexed: 11/05/2022]
Abstract
Purpose Phosphate and tensin homolog (PTEN), a negative regulator of PI3K signaling, is involved in DNA repair. ATR is a key sensor of DNA damage and replication stress. We evaluated whether ATR signaling has clinical significance and could be targeted by synthetic lethality in PTEN-deficient triple-negative breast cancer (TNBC). Methods PTEN, ATR and pCHK1Ser345 protein level was evaluated in 1650 human breast cancers. ATR blockade by VE-821 was investigated in PTEN-proficient- (MDA-MB-231) and PTEN-deficient (BT-549, MDA-MB-468) TNBC cell lines. Functional studies included DNA repair expression profiling, MTS cell-proliferation assay, FACS (cell cycle progression & γH2AX accumulation) and FITC-annexin V flow cytometry analysis. Results Low nuclear PTEN was associated with higher grade, pleomorphism, de-differentiation, higher mitotic index, larger tumour size, ER negativity, and shorter survival (p values < 0.05). In tumours with low nuclear PTEN, high ATR and/or high pCHK1ser345 level was also linked to higher grade, larger tumour size and poor survival (all p values < 0.05). VE-821 was selectively toxic in PTEN-deficient TNBC cells and resulted in accumulation of double-strand DNA breaks, cell cycle arrest, and increased apoptosis. Conclusion ATR signalling adversely impact survival in PTEN-deficient breast cancers. ATR inhibition is synthetically lethal in PTEN-deficient TNBC cells. Electronic supplementary material The online version of this article (10.1007/s10549-018-4683-4) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Nouf Al-Subhi
- Translational Oncology, Division of Cancer and Stem Cells, School of Medicine, University of Nottingham, Nottingham University Hospitals, Nottingham, NG5 1PB, UK
| | - Reem Ali
- Translational Oncology, Division of Cancer and Stem Cells, School of Medicine, University of Nottingham, Nottingham University Hospitals, Nottingham, NG5 1PB, UK
| | - Tarek Abdel-Fatah
- Department of Oncology, Nottingham University Hospitals, Nottingham, NG5 1PB, UK
| | - Paul M Moseley
- Department of Oncology, Nottingham University Hospitals, Nottingham, NG5 1PB, UK
| | - Stephen Y T Chan
- Department of Oncology, Nottingham University Hospitals, Nottingham, NG5 1PB, UK
| | - Andrew R Green
- Department of Pathology, Division of Cancer and Stem Cells, School of Medicine, University of Nottingham, Nottingham University Hospitals, Nottingham, NG5 1PB, UK
| | - Ian O Ellis
- Department of Pathology, Division of Cancer and Stem Cells, School of Medicine, University of Nottingham, Nottingham University Hospitals, Nottingham, NG5 1PB, UK
| | - Emad A Rakha
- Department of Pathology, Division of Cancer and Stem Cells, School of Medicine, University of Nottingham, Nottingham University Hospitals, Nottingham, NG5 1PB, UK.
| | - Srinivasan Madhusudan
- Translational Oncology, Division of Cancer and Stem Cells, School of Medicine, University of Nottingham, Nottingham University Hospitals, Nottingham, NG5 1PB, UK. .,Department of Oncology, Nottingham University Hospitals, Nottingham, NG5 1PB, UK.
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166
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Kurmasheva RT, Kurmashev D, Reynolds CP, Kang M, Wu J, Houghton PJ, Smith MA. Initial testing (stage 1) of M6620 (formerly VX-970), a novel ATR inhibitor, alone and combined with cisplatin and melphalan, by the Pediatric Preclinical Testing Program. Pediatr Blood Cancer 2018; 65:10.1002/pbc.26825. [PMID: 28921800 PMCID: PMC5876726 DOI: 10.1002/pbc.26825] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Revised: 08/16/2017] [Accepted: 08/28/2017] [Indexed: 12/23/2022]
Abstract
BACKGROUND M6620 is a novel inhibitor of the DNA damage repair enzyme ATR, and has potentiated the activity of cisplatin and irinotecan in non-small cell lung cancer and colon cancer xenografts, respectively. PROCEDURES M6620 was tested in vitro at concentrations ranging from 1.0 nM to 10.0 μM and at 75 nM in combination with cisplatin or melphalan. M6620 was tested against 24 solid tumor xenografts alone and in combination with cisplatin. Cisplatin was administered intraperitoneally on days 1 and 8 at a dose of 5 mg/kg. M6620 was administered intravenously on days 2 and 9 at 20 mg/m2 approximately 16 hr after cisplatin. RESULTS The median relative IC50 (rIC50 ) value for M6620 was 0.19 μM (range 0.03-1.38 μM). M6620 reduced the mean IC50 of cisplatin and melphalan by 1.48- and 1.95-fold, respectively. M6620 as a single agent in vivo induced significant differences in event-free survival (EFS) distribution in 5 of 24 (21%) solid tumor xenografts, but induced no objective responses. Cisplatin as a single agent induced significant differences in EFS distribution compared to control in 18 of 24 (75%) solid tumor xenografts. Three objective responses to cisplatin were observed. The M6620 and cisplatin combination induced significant differences in EFS distribution compared to control in 21 of 24 (88%), with four objective responses. CONCLUSIONS M6620 showed modest potentiation of cisplatin and melphalan activity for some cell lines. M6620 showed little single-agent activity and the addition of M6620 to cisplatin significantly prolonged time to event for a minority of tested xenografts across several histologies.
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Affiliation(s)
| | | | | | - Min Kang
- Texas Tech University Health Sciences Center, Lubbock, TX
| | - Jianwrong Wu
- St. Jude Children’s Research Hospital, Memphis, TN
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167
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Fernandez-Vidal A, Vignard J, Mirey G. Around and beyond 53BP1 Nuclear Bodies. Int J Mol Sci 2017; 18:ijms18122611. [PMID: 29206178 PMCID: PMC5751214 DOI: 10.3390/ijms18122611] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Revised: 11/27/2017] [Accepted: 12/01/2017] [Indexed: 12/17/2022] Open
Abstract
Within the nucleus, sub-nuclear domains define territories where specific functions occur. Nuclear bodies (NBs) are dynamic structures that concentrate nuclear factors and that can be observed microscopically. Recently, NBs containing the p53 binding protein 1 (53BP1), a key component of the DNA damage response, were defined. Interestingly, 53BP1 NBs are visualized during G1 phase, in daughter cells, while DNA damage was generated in mother cells and not properly processed. Unlike most NBs involved in transcriptional processes, replication has proven to be key for 53BP1 NBs, with replication stress leading to the formation of these large chromatin domains in daughter cells. In this review, we expose the composition and organization of 53BP1 NBs and focus on recent findings regarding their regulation and dynamics. We then concentrate on the importance of the replication stress, examine the relation of 53BP1 NBs with DNA damage and discuss their dysfunction.
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Affiliation(s)
- Anne Fernandez-Vidal
- Toxalim (Research Centre in Food Toxicology), Université de Toulouse, INRA, ENVT, INP-Purpan, UPS, 31027 Toulouse, France.
| | - Julien Vignard
- Toxalim (Research Centre in Food Toxicology), Université de Toulouse, INRA, ENVT, INP-Purpan, UPS, 31027 Toulouse, France.
| | - Gladys Mirey
- Toxalim (Research Centre in Food Toxicology), Université de Toulouse, INRA, ENVT, INP-Purpan, UPS, 31027 Toulouse, France.
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168
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Brandsma I, Fleuren ED, Williamson CT, Lord CJ. Directing the use of DDR kinase inhibitors in cancer treatment. Expert Opin Investig Drugs 2017; 26:1341-1355. [PMID: 28984489 PMCID: PMC6157710 DOI: 10.1080/13543784.2017.1389895] [Citation(s) in RCA: 80] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
INTRODUCTION Defects in the DNA damage response (DDR) drive the development of cancer by fostering DNA mutation but also provide cancer-specific vulnerabilities that can be exploited therapeutically. The recent approval of three different PARP inhibitors for the treatment of ovarian cancer provides the impetus for further developing targeted inhibitors of many of the kinases involved in the DDR, including inhibitors of ATR, ATM, CHEK1, CHEK2, DNAPK and WEE1. Areas covered: We summarise the current stage of development of these novel DDR kinase inhibitors, and describe which predictive biomarkers might be exploited to direct their clinical use. Expert opinion: Novel DDR inhibitors present promising candidates in cancer treatment and have the potential to elicit synthetic lethal effects. In order to fully exploit their potential and maximize their utility, identifying highly penetrant predictive biomarkers of single agent and combinatorial DDR inhibitor sensitivity are critical. Identifying the optimal drug combination regimens that could used with DDR inhibitors is also a key objective.
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Affiliation(s)
- Inger Brandsma
- The CRUK Gene Function Laboratory and Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, London, SW3 6JB, UK
| | - Emmy D.G. Fleuren
- The CRUK Gene Function Laboratory and Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, London, SW3 6JB, UK
| | - Chris T. Williamson
- The CRUK Gene Function Laboratory and Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, London, SW3 6JB, UK
| | - Christopher J. Lord
- The CRUK Gene Function Laboratory and Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, London, SW3 6JB, UK
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169
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Qiu Z, Oleinick NL, Zhang J. ATR/CHK1 inhibitors and cancer therapy. Radiother Oncol 2017; 126:450-464. [PMID: 29054375 DOI: 10.1016/j.radonc.2017.09.043] [Citation(s) in RCA: 196] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2017] [Revised: 08/01/2017] [Accepted: 09/30/2017] [Indexed: 02/06/2023]
Abstract
The cell cycle checkpoint proteins ataxia-telangiectasia-mutated-and-Rad3-related kinase (ATR) and its major downstream effector checkpoint kinase 1 (CHK1) prevent the entry of cells with damaged or incompletely replicated DNA into mitosis when the cells are challenged by DNA damaging agents, such as radiation therapy (RT) or chemotherapeutic drugs, that are the major modalities to treat cancer. This regulation is particularly evident in cells with a defective G1 checkpoint, a common feature of cancer cells, due to p53 mutations. In addition, ATR and/or CHK1 suppress replication stress (RS) by inhibiting excess origin firing, particularly in cells with activated oncogenes. Those functions of ATR/CHK1 make them ideal therapeutic targets. ATR/CHK1 inhibitors have been developed and are currently used either as single agents or paired with radiotherapy or a variety of genotoxic chemotherapies in preclinical and clinical studies. Here, we review the status of the development of ATR and CHK1 inhibitors. We also discuss the potential mechanisms by which ATR and CHK1 inhibition induces cell killing in the presence or absence of exogenous DNA damaging agents, such as RT and chemotherapeutic agents. Lastly, we discuss synthetic lethality interactions between the inhibition of ATR/CHK1 and defects in other DNA damage response (DDR) pathways/genes.
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Affiliation(s)
- Zhaojun Qiu
- Department of Radiation Oncology, School of Medicine, Case Western Reserve University, Cleveland, USA
| | - Nancy L Oleinick
- Department of Radiation Oncology, School of Medicine, Case Western Reserve University, Cleveland, USA; Case Comprehensive Cancer Center, Case Western Reserve University, Cleveland, USA
| | - Junran Zhang
- Department of Radiation Oncology, School of Medicine, Case Western Reserve University, Cleveland, USA; Case Comprehensive Cancer Center, Case Western Reserve University, Cleveland, USA.
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170
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Alexander A, Karakas C, Chen X, Carey JPW, Yi M, Bondy M, Thompson P, Cheung KL, Ellis IO, Gong Y, Krishnamurthy S, Alvarez RH, Ueno NT, Hunt KK, Keyomarsi K. Cyclin E overexpression as a biomarker for combination treatment strategies in inflammatory breast cancer. Oncotarget 2017; 8:14897-14911. [PMID: 28107181 PMCID: PMC5362453 DOI: 10.18632/oncotarget.14689] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Accepted: 12/26/2016] [Indexed: 12/18/2022] Open
Abstract
Inflammatory breast cancer (IBC) is a virulent form of breast cancer, and novel treatment strategies are urgently needed. Immunohistochemical analysis of tumors from women with a clinical diagnosis of IBC (n = 147) and those with non-IBC breast cancer (n = 2510) revealed that, whereas in non-IBC cases cytoplasmic cyclin E was highly correlated with poor prognosis (P < 0.001), in IBC cases both nuclear and cytoplasmic cyclin E were indicative of poor prognosis. These results underscored the utility of the cyclin E/CDK2 complex as a novel target for treatment. Because IBC cell lines were highly sensitive to the CDK2 inhibitors dinaciclib and meriolin 5, we developed a high-throughput survival assay (HTSA) to design novel sequential combination strategies based on the presence of cyclin E and CDK2. Using a 14-cell-line panel, we found that dinaciclib potentiated the activity of DNA-damaging chemotherapies treated in a sequence of dinaciclib followed by chemotherapy, whereas this was not true for paclitaxel. We also identified a signature of DNA repair–related genes that are downregulated by dinaciclib, suggesting that global DNA repair is inhibited and that prolonged DNA damage leads to apoptosis. Taken together, our findings argue that CDK2-targeted combinations may be viable strategies in IBC worthy of future clinical investigation.
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Affiliation(s)
- Angela Alexander
- Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA.,Morgan Welch Inflammatory Breast Cancer Research Program and Clinic, Houston, Texas, USA
| | - Cansu Karakas
- Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Xian Chen
- Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Jason P W Carey
- Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Min Yi
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Melissa Bondy
- Department of Pediatrics, Baylor College of Medicine, Houston, Texas, USA
| | - Patricia Thompson
- Department of Pathology, Stony Brook School of Medicine, Stony Brook, New York, USA
| | | | - Ian O Ellis
- University of Nottingham, School of Medicine, Nottingham, UK
| | - Yun Gong
- Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Savitri Krishnamurthy
- Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA.,Morgan Welch Inflammatory Breast Cancer Research Program and Clinic, Houston, Texas, USA
| | - Ricardo H Alvarez
- Morgan Welch Inflammatory Breast Cancer Research Program and Clinic, Houston, Texas, USA.,Department of Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Naoto T Ueno
- Morgan Welch Inflammatory Breast Cancer Research Program and Clinic, Houston, Texas, USA.,Department of Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Kelly K Hunt
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Khandan Keyomarsi
- Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
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171
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Carrassa L, Damia G. DNA damage response inhibitors: Mechanisms and potential applications in cancer therapy. Cancer Treat Rev 2017; 60:139-151. [PMID: 28961555 DOI: 10.1016/j.ctrv.2017.08.013] [Citation(s) in RCA: 113] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2017] [Revised: 07/26/2017] [Accepted: 08/01/2017] [Indexed: 02/06/2023]
Abstract
Over the last decade the unravelling of the molecular mechanisms of the DNA damage response pathways and of the genomic landscape of human tumors have paved the road to new therapeutic approaches in oncology. It is now clear that tumors harbour defects in different DNA damage response steps, mainly signalling and repair, rendering them more dependent on the remaining pathways. We here focus on the proteins ATM, ATR, CHK1 and WEE1, reviewing their roles in the DNA damage response and as targets in cancer therapy. In the last decade specific inhibitors of these proteins have been designed, and their potential antineoplastic activity has been explored both in monotherapy strategies against tumors with specific defects (synthetic lethality approach) and in combination with radiotherapy or chemotherapeutic or molecular targeted agents. The preclinical and clinical evidence of antitumor activity of these inhibitors emanating from these research efforts will be critically reviewed. Lastly, the potential therapeutic feasibility of combining together such inhibitors with the aim to target particular subsets of tumors will be also discussed.
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Affiliation(s)
- Laura Carrassa
- Laboratory of Molecular Pharmacology, Department of Oncology, IRCCS - Istituto di Ricerche Farmacologiche "Mario Negri", Milan, Italy.
| | - Giovanna Damia
- Laboratory of Molecular Pharmacology, Department of Oncology, IRCCS - Istituto di Ricerche Farmacologiche "Mario Negri", Milan, Italy.
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172
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Green AM, Budagyan K, Hayer KE, Reed MA, Savani MR, Wertheim GB, Weitzman MD. Cytosine Deaminase APOBEC3A Sensitizes Leukemia Cells to Inhibition of the DNA Replication Checkpoint. Cancer Res 2017; 77:4579-4588. [PMID: 28655787 PMCID: PMC5581702 DOI: 10.1158/0008-5472.can-16-3394] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Revised: 03/18/2017] [Accepted: 06/22/2017] [Indexed: 12/27/2022]
Abstract
Mutational signatures in cancer genomes have implicated the APOBEC3 cytosine deaminases in oncogenesis, possibly offering a therapeutic vulnerability. Elevated APOBEC3B expression has been detected in solid tumors, but expression of APOBEC3A (A3A) in cancer has not been described to date. Here, we report that A3A is highly expressed in subsets of pediatric and adult acute myelogenous leukemia (AML). We modeled A3A expression in the THP1 AML cell line by introducing an inducible A3A gene. A3A expression caused ATR-dependent phosphorylation of Chk1 and cell-cycle arrest, consistent with replication checkpoint activation. Further, replication checkpoint blockade via small-molecule inhibition of ATR kinase in cells expressing A3A led to apoptosis and cell death. Although DNA damage checkpoints are broadly activated in response to A3A activity, synthetic lethality was specific to ATR signaling via Chk1 and did not occur with ATM inhibition. Our findings identify elevation of A3A expression in AML cells, enabling apoptotic sensitivity to inhibitors of the DNA replication checkpoint and suggesting it as a candidate biomarker for ATR inhibitor therapy. Cancer Res; 77(17); 4579-88. ©2017 AACR.
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Affiliation(s)
- Abby M Green
- Department of Pediatrics, Children's Hospital of Philadelphia and University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania
- Center for Childhood Cancer Research, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Konstantin Budagyan
- Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia and University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania
| | - Katharina E Hayer
- Center for Childhood Cancer Research, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
- Department of Biomedical and Health Informatics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Morgann A Reed
- Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia and University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania
| | - Milan R Savani
- University of Pennsylvania College of Arts and Sciences, Philadelphia, Pennsylvania
| | - Gerald B Wertheim
- Center for Childhood Cancer Research, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
- Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia and University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania
| | - Matthew D Weitzman
- Department of Pediatrics, Children's Hospital of Philadelphia and University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania.
- Center for Childhood Cancer Research, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
- Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia and University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania
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173
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Abstract
OPINION STATEMENT A number of new treatment options have recently emerged for chronic lymphocytic leukemia (CLL) patients, including the Bruton's tyrosine kinase (BTK) inhibitor ibrutinib, phosphatidylinositol-3-kinase (PI3K) delta isoform inhibitor idelalisib combined with rituximab, the Bcl-2 antagonist venetoclax, and the new anti-CD20 antibodies obinutuzumab and ofatumumab. Most of these agents are already included into treatment algorithms defined by international practice guidelines, but more clinical investigations are needed to answer still remaining questions. Ibrutinib was proven as a primary choice for patients with the TP53 gene deletion/mutation, who otherwise have no active treatment available. Idelalisib with rituximab is also an active therapy, but due to increased risk of serious infections, its use in first-line treatment is limited to patients for whom ibrutinib is not an option. A new indication for ibrutinib was recently approved for older patients with comorbidities, as an alternative to the already existing indication for chlorambucil with obinutuzumab. The use of kinase inhibitors is already well established in recurrent/refractory disease. Immunochemotherapy with fludarabine, cyclophosphamide, rituximab (FCR) remains a major first-line option for many CLL patients without the TP53 gene deletion/mutation, and who have no significant comorbidities or history of infections, and is particularly effective in patients with favorable features including mutated IGHV status. There are a number of issues regarding novel therapies for CLL that need further investigation such as optimum duration of treatment with kinase inhibitors, appropriate sequencing of novel agents, mechanisms of resistance to inhibitors and response to class switching after treatment failure, along with the potential role of combinations of targeted agents.
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174
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Trap Seq: An RNA Sequencing-Based Pipeline for the Identification of Gene-Trap Insertions in Mammalian Cells. J Mol Biol 2017; 429:2780-2789. [PMID: 28782559 DOI: 10.1016/j.jmb.2017.07.020] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Revised: 07/19/2017] [Accepted: 07/30/2017] [Indexed: 12/12/2022]
Abstract
The development of haploid mammalian cell lines, coupled to next-generation sequencing, has recently facilitated forward genetic screenings in mammals. For mutagenesis, retrovirus- or transposon-based gene traps are frequently used. Current methods to map gene-trap insertions are based on inverse or splinkerette PCR, which despite their efficacy are prone to artifacts and do not provide information on expression of the targeted gene. Here, we describe a new RNA sequencing-based method (TrapSeq) to map gene-trap insertions. By recognizing chimeric mRNAs containing gene-trap sequences spliced to an exon, our method identifies insertions that lead to productive trapping. When applied to individual mutant clones, our method provides a fast and cost-effective way that not only identifies the insertion site but also reveals its impact on the expression of the trapped gene. As proof of principle, we conducted two independent screenings for resistance against 6-thioguanine and an ATR inhibitor, which identified mutations known to provide resistance to these reagents and revealed ECT2 as a novel determinant for the sensitivity to ATR inhibition.
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175
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Delia D, Mizutani S. The DNA damage response pathway in normal hematopoiesis and malignancies. Int J Hematol 2017; 106:328-334. [PMID: 28707218 DOI: 10.1007/s12185-017-2300-7] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Accepted: 07/05/2017] [Indexed: 11/29/2022]
Abstract
In mammalian cells, the DNA damage response (DDR) prevents the replication and propagation of DNA errors to the next generation, thus maintaining genomic stability. At the heart of the DDR are the related signaling kinases ATM, ATR, and DNA-PK, which regulate DNA repair and associated events such as cell cycle checkpoints, chromatin remodeling, transcription, and ultimately apoptosis. Several findings highlight the occurrence of DDR in hemopoietic stem cells (HSCs), and persistence of DNA lesions in these cells promotes their functional decline and accumulation of leukemogenic mutations. Besides favoring tumor formation and progression, molecular defects that directly or indirectly inactivate certain DDR pathways can provide a therapeutic opportunity, since a reduced ability to repair DNA lesions renders hemopoietic malignancies vulnerable to genotoxic drugs acting also through synthetic lethal interactions. Here, we discuss the essential role of DDR in HSC maintenance and protection against leukemogenesis, and how acquired DDR dysfunctions or pharmacological agents that block this pathway can be effectively exploited for the treatment of various hematopoietic malignancies.
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Affiliation(s)
- Domenico Delia
- Fondazione IRCCS Istituto Nazionale dei Tumori, Via Amadeo 42, 20133, Milan, Italy.
| | - Shuki Mizutani
- Kawasaki North Center for Childhood Developmental Disorder/Tokyo Medical and Dental University, 5-26-1 Katahira, Aso-ku, Kawasaki, 215-0003, Japan
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176
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Hendriks CM, Hartkamp J, Wiezorek S, Steinkamp AD, Rossetti G, Lüscher B, Bolm C. Sulfoximines as ATR inhibitors: Analogs of VE-821. Bioorg Med Chem Lett 2017; 27:2659-2662. [DOI: 10.1016/j.bmcl.2017.04.026] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Revised: 04/07/2017] [Accepted: 04/07/2017] [Indexed: 10/19/2022]
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177
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Roman-Gonzalez A, Jimenez C. Malignant pheochromocytoma-paraganglioma: pathogenesis, TNM staging, and current clinical trials. Curr Opin Endocrinol Diabetes Obes 2017; 24:174-183. [PMID: 28234804 DOI: 10.1097/med.0000000000000330] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
PURPOSE OF REVIEW Pheochromocytomas and paragangliomas (PPGs) are rare neuroendocrine tumors. Over the last 15 years, substantial progress has been made toward understanding the clinical aspects and molecular origins of this disease. Nevertheless, predicting and managing malignancy remains the biggest challenge in clinical practice. The natural history of patients with malignant PPGs has not yet been described, and their prognosis varies. Currently, the diagnosis of malignant PPGs relies on the presence of metastases, by which time the disease is usually advanced. Better understanding of the clinical and molecular characteristics of patients with malignant PPGs has spurred several prospective clinical trials. RECENT FINDINGS Several molecular targeted therapies, a novel radiopharmaceutical medication that targets the catecholamine transporter, and immunotherapy are under evaluation for the treatment of patients with malignant PPGs. Furthermore, the identification of clinical predictors of malignancy and survival has led to the first TNM staging classification for PPGs. SUMMARY Prospective clinical trials are providing patients with therapeutic options beyond systemic chemotherapy. The knowledge derived from these trials and from the evaluation of the TNM staging in clinical practice will help to clarify how to most effectively treat malignant PPGs.
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Affiliation(s)
- Alejandro Roman-Gonzalez
- aDepartment of Endocrinology, Hospital Universitario San Vicente Fundacion-Universidad de Antioquia, Medellín, Colombia bDepartment of Endocrine Neoplasia and Hormonal Disorders, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
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178
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Beyaert M, Starczewska E, Pérez ACG, Vanlangendonck N, Saussoy P, Tilman G, De Leener A, Vekemans MC, Van Den Neste E, Bontemps F. Reevaluation of ATR signaling in primary resting chronic lymphocytic leukemia cells: evidence for pro-survival or pro-apoptotic function. Oncotarget 2017; 8:56906-56920. [PMID: 28915641 PMCID: PMC5593612 DOI: 10.18632/oncotarget.18144] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Accepted: 04/24/2017] [Indexed: 12/30/2022] Open
Abstract
ATM, primarily activated by DNA double-strand breaks, and ATR, activated by single-stranded DNA, are master regulators of the cellular response to DNA damage. In primary chronic lymphocytic leukemia (CLL) cells, ATR signaling is considered to be switched off due to ATR downregulation. Here, we hypothesized that ATR, though expressed at low protein level, could play a role in primary resting CLL cells after genotoxic stress. By investigating the response of CLL cells to UV-C irradiation, a prototypical activator of ATR, we could detect phosphorylation of ATR at Thr-1989, a marker for ATR activation, and also observed that selective ATR inhibitors markedly decreased UV-C-induced phosphorylation of ATR targets, including H2AX and p53. Similar results were obtained with the purine analogs fludarabine and cladribine that were also shown to activate ATR and induce ATR-dependent phosphorylation of H2AX and p53. In addition, ATR inhibition was found to sensitize primary CLL cells to UV-C by decreasing DNA repair synthesis. Conversely, ATR inhibition rescued CLL cells against purine analogs by reducing expression of the pro-apoptotic genes PUMA and BAX. Collectively, our study indicates that ATR signaling can be activated in resting CLL cells and play a pro-survival or pro-apoptotic role, depending on the genotoxic context.
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Affiliation(s)
- Maxime Beyaert
- de Duve Institute, Université catholique de Louvain, B-1200 Brussels, Belgium
| | - Eliza Starczewska
- de Duve Institute, Université catholique de Louvain, B-1200 Brussels, Belgium
| | | | - Nicolas Vanlangendonck
- Department of Hematology, Cliniques universitaires Saint-Luc, Université catholique de Louvain, B-1200 Brussels, Belgium
| | - Pascale Saussoy
- Service de Biologie clinique, Cliniques universitaires Saint-Luc, Université catholique de Louvain, B-1200 Brussels, Belgium
| | - Gaëlle Tilman
- Center for Human Genetic, Cliniques universitaires Saint-Luc, Université catholique de Louvain, B-1200 Brussels, Belgium
| | - Anne De Leener
- Center for Human Genetic, Cliniques universitaires Saint-Luc, Université catholique de Louvain, B-1200 Brussels, Belgium
| | - Marie-Christiane Vekemans
- Department of Hematology, Cliniques universitaires Saint-Luc, Université catholique de Louvain, B-1200 Brussels, Belgium
| | - Eric Van Den Neste
- de Duve Institute, Université catholique de Louvain, B-1200 Brussels, Belgium.,Department of Hematology, Cliniques universitaires Saint-Luc, Université catholique de Louvain, B-1200 Brussels, Belgium
| | - Françoise Bontemps
- de Duve Institute, Université catholique de Louvain, B-1200 Brussels, Belgium
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179
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Ayars M, Eshleman J, Goggins M. Susceptibility of ATM-deficient pancreatic cancer cells to radiation. Cell Cycle 2017; 16:991-998. [PMID: 28453388 PMCID: PMC5462076 DOI: 10.1080/15384101.2017.1312236] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Accepted: 03/22/2017] [Indexed: 12/12/2022] Open
Abstract
Ataxia telangiectasia mutated (ATM) is inactivated in a significant minority of pancreatic ductal adenocarcinomas and may be predictor of treatment response. We determined if ATM deficiency renders pancreatic cancer cells more sensitive to fractionated radiation or commonly used chemotherapeutics. ATM expression was knocked down in three pancreatic cancer cell lines using ATM-targeting shRNA. Isogenic cell lines were tested for sensitivity to several chemotherapeutic agents and radiation. DNA repair kinetics were analyzed in irradiated cells using the comet assay. We find that while rendering pancreatic cancer cells ATM-deficient did not significantly change their sensitivity to several chemotherapeutics, it did render them exquisitely sensitized to radiation. Pancreatic cancer ATM status may help predict response to radiotherapy.
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Affiliation(s)
- Michael Ayars
- Department of Pathology, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - James Eshleman
- Department of Pathology, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Department of Oncology, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Michael Goggins
- Department of Pathology, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Department of Oncology, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Department of Medicine, The Sol Goldman Pancreatic Cancer Research Centre; The Johns Hopkins University School of Medicine, Baltimore, MD, USA
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180
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Herrero AB, Gutiérrez NC. Targeting Ongoing DNA Damage in Multiple Myeloma: Effects of DNA Damage Response Inhibitors on Plasma Cell Survival. Front Oncol 2017; 7:98. [PMID: 28580318 PMCID: PMC5437203 DOI: 10.3389/fonc.2017.00098] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2017] [Accepted: 05/01/2017] [Indexed: 11/20/2022] Open
Abstract
Human myeloma cell lines (HMCLs) and a subset of myeloma patients with poor prognosis exhibit high levels of replication stress (RS), leading to DNA damage. In this study, we confirmed the presence of DNA double-strand breaks (DSBs) in several HMCLs by measuring γH2AX and RAD51 foci and analyzed the effect of various inhibitors of the DNA damage response on MM cell survival. Inhibition of ataxia telangiectasia and Rad3-related protein (ATR), the main kinase mediating the response to RS, using the specific inhibitor VE-821 induced more cell death in HMCLs than in control lymphoblastoid cells and U266, an HMCL with a low level of DNA damage. The absence of ATR was partially compensated by ataxia telangiectasia-mutated protein (ATM), since chemical inhibition of both kinases using VE-821 and KU-55933 significantly increased the death of MM cells with DNA damage. We found that ATM and ATR are involved in DSB repair by homologous recombination (HR) in MM. Inhibition of both kinases resulted in a stronger inhibition that may underlie cell death induction, since abolition of HR using two different inhibitors severely reduced survival of HMCLs that exhibit DNA damage. On the other hand, inhibition of the other route involved in DSB repair, non-homologous end joining (NHEJ), using the DNA-PK inhibitor NU7441, did not affect MM cell viability. Interestingly, we found that NHEJ inhibition did not increase cell death when HR was simultaneously inhibited with the RAD51 inhibitor B02, but it clearly increased the level of cell death when HR was inhibited with the MRE11 inhibitor mirin, which interferes with recombination before DNA resection takes place. Taken together, our results demonstrate for the first time that MM cells with ongoing DNA damage rely on an intact HR pathway, which thereby suggests therapeutic opportunities. We also show that inhibition of HR after the initial step of end resection might be more appropriate for inducing MM cell death, since it prevents the occurrence of a compensatory NHEJ repair mechanism. These preclinical observations provide the rationale for its clinical evaluation.
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Affiliation(s)
- Ana Belén Herrero
- Cancer Research Center-IBMCC (USAL-CSIC), Salamanca, Spain
- Institute of Biomedical Research of Salamanca (IBSAL), Salamanca, Spain
| | - Norma Carmen Gutiérrez
- Cancer Research Center-IBMCC (USAL-CSIC), Salamanca, Spain
- Institute of Biomedical Research of Salamanca (IBSAL), Salamanca, Spain
- Hematology Department, University Hospital of Salamanca, Salamanca, Spain
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181
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Sundar R, Brown J, Ingles Russo A, Yap TA. Targeting ATR in cancer medicine. Curr Probl Cancer 2017; 41:302-315. [PMID: 28662958 DOI: 10.1016/j.currproblcancer.2017.05.002] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Revised: 05/04/2017] [Accepted: 05/15/2017] [Indexed: 12/21/2022]
Abstract
DNA damage occurs continually through various intrinsic and extrinsic mechanisms such as ultraviolet radiation, smoking, reactive oxygen species, and errors during replication. The cellular DNA damage response (DDR) comprises signaling networks that regulate a spectrum of processes, including cell cycle progression, which enable DNA repair to occur. Ataxia telangiectasia mutated (ATM) and ataxia telangiectasia mutated and rad3-related (ATR) kinase are 2 key regulators of the DDR cell cycle checkpoints. ATR plays an essential role in the repair of replication-associated DNA damage, while ATM is activated by DNA double-strand breaks. The investigation of cell cycle checkpoint signaling through ATR and ATM, as well as the relevant pathways involved in oncogenesis and cancer progression, has led to the discovery and development of potent and selective ATR inhibitors (ATRi). Preclinical data have demonstrated that ATR inhibition leads to tumor synthetic lethality in specific molecular contexts, and it exhibits synergy in combination with different antitumor therapies, including chemotherapy, radiotherapy, and poly(ADP-ribose) polymerase inhibitors. ATRi are now being assessed in early-phase clinical trials as single agents and in combinatorial regimens, including platinum and other chemotherapies, radiotherapy, poly(ADP-ribose) polymerase inhibitors, and immune checkpoint inhibitors. This article details the preclinical biology leading to the discovery and development of novel ATRi and discusses the rationale for monotherapy and combination antitumor strategies. We focus on the clinical development of ATRi and discuss the progress made in identifying putative predictive biomarkers of response for patient selection, such as p53, ATM, ARID1A, and other DDR aberrations.
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Affiliation(s)
- Raghav Sundar
- Drug Development Unit, Royal Marsden Hospital, London, UK; Department of Haematology-Oncology, National University Health System, Singapore
| | - Jessica Brown
- Drug Development Unit, Royal Marsden Hospital, London, UK
| | - Alvaro Ingles Russo
- Drug Development Unit, Royal Marsden Hospital, London, UK; The Institute of Cancer Research, London, UK
| | - Timothy A Yap
- Drug Development Unit, Royal Marsden Hospital, London, UK; The Institute of Cancer Research, London, UK.
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182
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USP7 inhibition alters homologous recombination repair and targets CLL cells independently of ATM/p53 functional status. Blood 2017; 130:156-166. [PMID: 28495793 DOI: 10.1182/blood-2016-12-758219] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Accepted: 04/29/2017] [Indexed: 12/20/2022] Open
Abstract
The role of deubiquitylase ubiquitin-specific protease 7 (USP7) in the regulation of the p53-dependent DNA damage response (DDR) pathway is well established. Whereas previous studies have mostly focused on the mechanisms underlying how USP7 directly controls p53 stability, we recently showed that USP7 modulates the stability of the DNA damage responsive E3 ubiquitin ligase RAD18. This suggests that targeting USP7 may have therapeutic potential even in tumors with defective p53 or ibrutinib resistance. To test this hypothesis, we studied the effect of USP7 inhibition in chronic lymphocytic leukemia (CLL) where the ataxia telangiectasia mutated (ATM)-p53 pathway is inactivated with relatively high frequency, leading to treatment resistance and poor clinical outcome. We demonstrate that USP7 is upregulated in CLL cells, and its loss or inhibition disrupts homologous recombination repair (HRR). Consequently, USP7 inhibition induces significant tumor-cell killing independently of ATM and p53 through the accumulation of genotoxic levels of DNA damage. Moreover, USP7 inhibition sensitized p53-defective, chemotherapy-resistant CLL cells to clinically achievable doses of HRR-inducing chemotherapeutic agents in vitro and in vivo in a murine xenograft model. Together, these results identify USP7 as a promising therapeutic target for the treatment of hematological malignancies with DDR defects, where ATM/p53-dependent apoptosis is compromised.
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183
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Targeting the ATR-CHK1 Axis in Cancer Therapy. Cancers (Basel) 2017; 9:cancers9050041. [PMID: 28448462 PMCID: PMC5447951 DOI: 10.3390/cancers9050041] [Citation(s) in RCA: 141] [Impact Index Per Article: 20.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Revised: 04/23/2017] [Accepted: 04/25/2017] [Indexed: 12/14/2022] Open
Abstract
Targeting the DNA damage response (DDR) is a new therapeutic approach in cancer that shows great promise for tumour selectivity. Key components of the DDR are the ataxia telangiectasia mutated and Rad3 related (ATR) and checkpoint kinase 1 (CHK1) kinases. This review article describes the role of ATR and its major downstream target, CHK1, in the DDR and why cancer cells are particularly reliant on the ATR-CHK1 pathway, providing the rationale for targeting these kinases, and validation of this hypothesis by genetic manipulation. The recent development of specific inhibitors and preclinical data using these inhibitors not only as chemosensitisers and radiosensitisers but also as single agents to exploit specific pathologies of tumour cells is described. These potent and specific inhibitors have now entered clinical trial and early results are presented.
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184
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Ghamlouch H, Nguyen-Khac F, Bernard OA. Chronic lymphocytic leukaemia genomics and the precision medicine era. Br J Haematol 2017; 178:852-870. [DOI: 10.1111/bjh.14719] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Hussein Ghamlouch
- Institut National De La Santé Et De La Recherche Médicale (INSERM) U1170; Villejuif France
- Gustave Roussy; Villejuif France
- Université Paris Saclay; Paris France
- Equipe Labellisée Ligue Nationale Contre Le Cancer; Paris France
| | - Florence Nguyen-Khac
- INSERM U1138; Université Pierre et Marie Curie-Paris 6; Service d'Hématologie Biologique; Hôpital Pitié-Salpêtrière; APHP; Paris France
| | - Olivier A. Bernard
- Institut National De La Santé Et De La Recherche Médicale (INSERM) U1170; Villejuif France
- Gustave Roussy; Villejuif France
- Université Paris Saclay; Paris France
- Equipe Labellisée Ligue Nationale Contre Le Cancer; Paris France
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185
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Lin AB, McNeely SC, Beckmann RP. Achieving Precision Death with Cell-Cycle Inhibitors that Target DNA Replication and Repair. Clin Cancer Res 2017; 23:3232-3240. [PMID: 28331049 DOI: 10.1158/1078-0432.ccr-16-0083] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Revised: 11/29/2016] [Accepted: 03/15/2017] [Indexed: 11/16/2022]
Abstract
All cancers are characterized by defects in the systems that ensure strict control of the cell cycle in normal tissues. The consequent excess tissue growth can be countered by drugs that halt cell division, and, indeed, the majority of chemotherapeutics developed during the last century work by disrupting processes essential for the cell cycle, particularly DNA synthesis, DNA replication, and chromatid segregation. In certain contexts, the efficacy of these classes of drugs can be impressive, but because they indiscriminately block the cell cycle of all actively dividing cells, their side effects severely constrain the dose and duration with which they can be administered, allowing both normal and malignant cells to escape complete growth arrest. Recent progress in understanding how cancers lose control of the cell cycle, coupled with comprehensive genomic profiling of human tumor biopsies, has shown that many cancers have mutations affecting various regulators and checkpoints that impinge on the core cell-cycle machinery. These defects introduce unique vulnerabilities that can be exploited by a next generation of drugs that promise improved therapeutic windows in patients whose tumors bear particular genomic aberrations, permitting increased dose intensity and efficacy. These developments, coupled with the success of new drugs targeting cell-cycle regulators, have led to a resurgence of interest in cell-cycle inhibitors. This review in particular focuses on the newer strategies that may facilitate better therapeutic targeting of drugs that inhibit the various components that safeguard the fidelity of the fundamental processes of DNA replication and repair. Clin Cancer Res; 23(13); 3232-40. ©2017 AACR.
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Affiliation(s)
- Aimee Bence Lin
- Early Phase Medical-Oncology, Eli Lilly and Company, Lilly Corporate Center, Indianapolis, Indiana
| | - Samuel C McNeely
- Oncology Business Unit-Patient Tailoring, Eli Lilly and Company, Lilly Corporate Center, Indianapolis, Indiana
| | - Richard P Beckmann
- Oncology Translational Research, Eli Lilly and Company, Lilly Corporate Center, Indianapolis, Indiana.
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186
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Min A, Im SA, Jang H, Kim S, Lee M, Kim DK, Yang Y, Kim HJ, Lee KH, Kim JW, Kim TY, Oh DY, Brown J, Lau A, O'Connor MJ, Bang YJ. AZD6738, A Novel Oral Inhibitor of ATR, Induces Synthetic Lethality with ATM Deficiency in Gastric Cancer Cells. Mol Cancer Ther 2017; 16:566-577. [PMID: 28138034 DOI: 10.1158/1535-7163.mct-16-0378] [Citation(s) in RCA: 96] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2016] [Revised: 11/01/2016] [Accepted: 12/08/2016] [Indexed: 11/16/2022]
Abstract
Ataxia telangiectasia and Rad3-related (ATR) can be considered an attractive target for cancer treatment due to its deleterious effect on cancer cells harboring a homologous recombination defect. The aim of this study was to investigate the potential use of the ATR inhibitor, AZD6738, to treat gastric cancer.In SNU-601 cells with dysfunctional ATM, AZD6738 treatment led to an accumulation of DNA damage due to dysfunctional RAD51 foci formation, S phase arrest, and caspase 3-dependent apoptosis. In contrast, SNU-484 cells with functional ATM were not sensitive to AZD6738. Inhibition of ATM in SNU-484 cells enhanced AZD6738 sensitivity to a level comparable with that observed in SNU-601 cells, showing that activation of the ATM-Chk2 signaling pathway attenuates AZD6738 sensitivity. In addition, decreased HDAC1 expression was found to be associated with ATM inactivation in SNU-601 cells, demonstrating the interaction between HDAC1 and ATM can affect sensitivity to AZD6738. Furthermore, in an in vivo tumor xenograft mouse model, AZD6738 significantly suppressed tumor growth and increased apoptosis.These findings suggest synthetic lethality between ATR inhibition and ATM deficiency in gastric cancer cells. Further clinical studies on the interaction between AZD 6738 and ATM deficiency are warranted to develop novel treatment strategies for gastric cancer. Mol Cancer Ther; 16(4); 566-77. ©2017 AACR.
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Affiliation(s)
- Ahrum Min
- Cancer Research Institute, Seoul National University, Seoul, Korea
- Biomedical Research Institute, Seoul National University Hospital, Seoul, Korea
| | - Seock-Ah Im
- Cancer Research Institute, Seoul National University, Seoul, Korea.
- Biomedical Research Institute, Seoul National University Hospital, Seoul, Korea
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Hyemin Jang
- Cancer Research Institute, Seoul National University, Seoul, Korea
| | - Seongyeong Kim
- Cancer Research Institute, Seoul National University, Seoul, Korea
| | - Miso Lee
- Cancer Research Institute, Seoul National University, Seoul, Korea
| | | | - Yaewon Yang
- Cancer Research Institute, Seoul National University, Seoul, Korea
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Hee-Jun Kim
- Cancer Research Institute, Seoul National University, Seoul, Korea
- Department of Internal Medicine, Chung Ang University College of Medicine, Seoul, Korea
| | - Kyung-Hun Lee
- Cancer Research Institute, Seoul National University, Seoul, Korea
- Biomedical Research Institute, Seoul National University Hospital, Seoul, Korea
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Jin Won Kim
- Cancer Research Institute, Seoul National University, Seoul, Korea
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Tae-Yong Kim
- Cancer Research Institute, Seoul National University, Seoul, Korea
- Biomedical Research Institute, Seoul National University Hospital, Seoul, Korea
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Do-Youn Oh
- Cancer Research Institute, Seoul National University, Seoul, Korea
- Biomedical Research Institute, Seoul National University Hospital, Seoul, Korea
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Jeff Brown
- AstraZeneca R&D Boston, Waltham, Massachusetts
| | - Alan Lau
- AstraZeneca UK Ltd., Macclesfield, Cheshire, United Kingdom
| | | | - Yung-Jue Bang
- Cancer Research Institute, Seoul National University, Seoul, Korea
- Biomedical Research Institute, Seoul National University Hospital, Seoul, Korea
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
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187
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Carlucci G, Carney B, Sadique A, Vansteene A, Tang J, Reiner T. Evaluation of [ 18F]-ATRi as PET tracer for in vivo imaging of ATR in mouse models of brain cancer. Nucl Med Biol 2017; 48:9-15. [PMID: 28157626 DOI: 10.1016/j.nucmedbio.2017.01.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Revised: 11/28/2016] [Accepted: 01/05/2017] [Indexed: 10/20/2022]
Abstract
RATIONALE Ataxia telangiectasia and Rad3-related (ATR) threonine serine kinase is one of the key elements in orchestrating the DNA damage response (DDR). As such, inhibition of ATR can amplify the effects of chemo- and radiation-therapy, and several ATR inhibitors (ATRi) have already undergone clinical testing in cancer. For more accurate patient selection, monitoring and staging, real-time in vivo imaging of ATR could be invaluable; the development of appropriate imaging agents has remained a major challenge. METHODS 3-amino-N-(4-[18F]phenyl)-6-(4-(methylsulfonyl)phenyl)pyrazine-2-carboxamide ([18F]-ATRi), a close analogue of Ve-821, (a clinical ATRi candidate), was readily accomplished similarly to already established synthetic procedures. Structurally, 18F was introduced at the 4-position of the aromatic ring of Ve-821 for generating a labeled ATR inhibitor. In vitro experiments were conducted in U251 MG glioblastoma cell lines and ex vivo biodistribution were performed in subcutaneous U251 MG xenograft bearing athymic nude mice following microPET imaging. RESULTS [18F]-ATRi has a similar pharmacokinetic profile to that of Ve-821. Using an U251 MG glioblastoma mouse model, we evaluated the in vivo binding efficiency of [18F]-ATRi. Blood and tumor showed a statistically significant difference between mice injected with only the probe or following blocking experiment with Ve-821 (1.48±0.40%ID/g vs. 0.46±0.12%ID/g in tumor and 1.85±0.47%ID/g vs. 0.84±0.3%ID/g in blood respectively). CONCLUSIONS [18F]-ATRi represents the first 18F positron emission tomography (PET) ATR imaging agent, and is designed on a low nanomolar and clinically relevant ATR inhibitor.
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Affiliation(s)
- Giuseppe Carlucci
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, NY, 10065, USA
| | - Brandon Carney
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, NY, 10065, USA; Department of Chemistry, Hunter College and PhD Program in Chemistry, The Graduate Center of the City University of New York, New York, NY 10018, USA
| | - Ahmad Sadique
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, NY, 10065, USA
| | - Axel Vansteene
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, NY, 10065, USA
| | - Jun Tang
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, NY, 10065, USA
| | - Thomas Reiner
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, NY, 10065, USA; Weill Cornell Medical College, New York, NY, 10065, USA.
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188
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Personalised Medicine: Genome Maintenance Lessons Learned from Studies in Yeast as a Model Organism. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2017; 1007:157-178. [PMID: 28840557 DOI: 10.1007/978-3-319-60733-7_9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Yeast research has been tremendously contributing to the understanding of a variety of molecular pathways due to the ease of its genetic manipulation, fast doubling time as well as being cost-effective. The understanding of these pathways did not only help scientists learn more about the cellular functions but also assisted in deciphering the genetic and cellular defects behind multiple diseases. Hence, yeast research not only opened the doors for transforming basic research into applied research, but also paved the roads for improving diagnosis and innovating personalized therapy of different diseases. In this chapter, we discuss how yeast research has contributed to understanding major genome maintenance pathways such as the S-phase checkpoint activation pathways, repair via homologous recombination and non-homologous end joining as well as topoisomerases-induced protein linked DNA breaks repair. Defects in these pathways lead to neurodegenerative diseases and cancer. Thus, the understanding of the exact genetic defects underlying these diseases allowed the development of personalized medicine, improving the diagnosis and treatment and overcoming the detriments of current conventional therapies such as the side effects, toxicity as well as drug resistance.
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189
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Williams DT, Staples CJ. Approaches for Identifying Novel Targets in Precision Medicine: Lessons from DNA Repair. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2017; 1007:1-16. [PMID: 28840549 DOI: 10.1007/978-3-319-60733-7_1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Genome stability is maintained by a number of elegant mechanisms, which sense and repair damaged DNA. Germline defects that compromise genomic integrity result in cancer predisposition, exemplified by rare syndromes caused by mutations in certain DNA repair genes. These individuals often exhibit other symptoms including progeria and neurodegeneration. Paradoxically, some of these deleterious genetic alterations provide novel therapeutic opportunities to target cancer cells; an excellent example of such an approach being the recent development of poly (ADP-ribose) polymerase inhibitors as the first 'synthetic lethal' medicine for patients with BRCA-mutant cancers. The therapeutic exploitation of synthetic lethal interactions has enabled a novel approach to personalised medicine based on continued molecular profiling of patient and tumour material. This profiling may also aid clinicians in the identification of specific drug resistance mechanisms following relapse, and enable appropriate modification of the therapeutic regimen. This chapter focuses on therapeutic strategies designed to target aspects of the DNA damage response, and examines emerging themes demonstrating mechanistic overlap between DNA repair and neurodegeneration.
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Affiliation(s)
- Dean T Williams
- School of Medical Sciences, Bangor University, Bangor, Gwynedd, LL57 2DG, UK.,Department of Vascular Surgery, Ysbyty Gwynedd, Bangor, LL57 2PW, UK
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190
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Martinez E, Sanchez L, Vazquez N, Marks R, Cedillo R, Respondek C, Holguin M, Persans MW, Keniry M. A CRISPR View of Biological Mechanisms. Discoveries (Craiova) 2016; 4:e69. [PMID: 32309588 PMCID: PMC7159838 DOI: 10.15190/d.2016.16] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Revised: 12/29/2016] [Accepted: 12/29/2016] [Indexed: 12/26/2022] Open
Abstract
A decade ago, only six manuscripts would be found on a PubMed search for "CRISPR," compared to 2,011 manuscripts in 2016. The purpose of this review is to discuss this emergent technology that has revolutionized molecular biological research in just a few years. Endogenous CRISPR mechanisms are harbored by bacteria and archaea as an adaptive defense system that targets foreign DNA from viruses and plasmids. CRISPR has been adapted as a genome editing tool in a plethora of organisms ranging from yeast to humans. This tool has been employed to create loss of function mutations, gain of function mutations, and tagged alleles in a wide range of settings. CRISPR is now extensively employed for genetic screens. CRISPR has also been adapted to study transcriptional regulation. This versatile and relatively facile technique has, and will be, tremendously impactful in research areas such as biomedical sciences, agriculture, and the basic sciences.
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Affiliation(s)
- Eduardo Martinez
- Department of Biology, University of Texas Rio Grande Valley, 1201 W. University Dr., Edinburg, TX 78539, USA
| | - Lilia Sanchez
- Department of Biology, University of Texas Rio Grande Valley, 1201 W. University Dr., Edinburg, TX 78539, USA
| | - Neftali Vazquez
- Department of Biology, University of Texas Rio Grande Valley, 1201 W. University Dr., Edinburg, TX 78539, USA
| | - Rebecca Marks
- Department of Biology, University of Texas Rio Grande Valley, 1201 W. University Dr., Edinburg, TX 78539, USA
| | - Raechel Cedillo
- Department of Biology, University of Texas Rio Grande Valley, 1201 W. University Dr., Edinburg, TX 78539, USA
| | - Christa Respondek
- Department of Biology, University of Texas Rio Grande Valley, 1201 W. University Dr., Edinburg, TX 78539, USA
| | - Martin Holguin
- Department of Biology, University of Texas Rio Grande Valley, 1201 W. University Dr., Edinburg, TX 78539, USA
| | - Michael W. Persans
- Department of Biology, University of Texas Rio Grande Valley, 1201 W. University Dr., Edinburg, TX 78539, USA
| | - Megan Keniry
- Department of Biology, University of Texas Rio Grande Valley, 1201 W. University Dr., Edinburg, TX 78539, USA
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191
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Ward JA, McLellan L, Stockley M, Gibson KR, Whitlock GA, Knights C, Harrigan JA, Jacq X, Tate EW. Quantitative Chemical Proteomic Profiling of Ubiquitin Specific Proteases in Intact Cancer Cells. ACS Chem Biol 2016; 11:3268-3272. [PMID: 27779380 DOI: 10.1021/acschembio.6b00766] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Deubiquitinating enzymes play an important role in a plethora of therapeutically relevant processes and are emerging as pioneering drug targets. Herein, we present a novel probe, Ubiquitin Specific Protease (USP) inhibitor, alongside an alkyne-tagged activity-based probe analogue. Activity-based proteome profiling identified 12 USPs, including USP4, USP16, and USP33, as inhibitor targets using submicromolar probe concentrations. This represents the first intact cell activity-based profiling of deubiquitinating enzymes. Further analysis demonstrated functional inhibition of USP33 and identified a synergistic relationship in combination with ATR inhibition, consistent with USP4 inhibition.
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Affiliation(s)
- Jennifer A. Ward
- Department of Chemistry, Imperial College London, London, SW7 2AZ, United Kingdom
| | - Lauren McLellan
- MISSION Therapeutics, Ltd., Moneta,
Babraham Research Campus, Cambridge, CB22 3AT, United Kingdom
| | - Martin Stockley
- MISSION Therapeutics, Ltd., Moneta,
Babraham Research Campus, Cambridge, CB22 3AT, United Kingdom
| | - Karl R. Gibson
- Sandexis Medicinal Chemistry, Ltd., Innovation House, Discovery Park, Ramsgate Road, Sandwich, Kent, CT13 9ND, United Kingdom
| | - Gavin A. Whitlock
- Sandexis Medicinal Chemistry, Ltd., Innovation House, Discovery Park, Ramsgate Road, Sandwich, Kent, CT13 9ND, United Kingdom
| | - Charlotte Knights
- MISSION Therapeutics, Ltd., Moneta,
Babraham Research Campus, Cambridge, CB22 3AT, United Kingdom
| | - Jeanine A. Harrigan
- MISSION Therapeutics, Ltd., Moneta,
Babraham Research Campus, Cambridge, CB22 3AT, United Kingdom
| | - Xavier Jacq
- MISSION Therapeutics, Ltd., Moneta,
Babraham Research Campus, Cambridge, CB22 3AT, United Kingdom
| | - Edward W. Tate
- Department of Chemistry, Imperial College London, London, SW7 2AZ, United Kingdom
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192
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Williamson CT, Miller R, Pemberton HN, Jones SE, Campbell J, Konde A, Badham N, Rafiq R, Brough R, Gulati A, Ryan CJ, Francis J, Vermulen PB, Reynolds AR, Reaper PM, Pollard JR, Ashworth A, Lord CJ. ATR inhibitors as a synthetic lethal therapy for tumours deficient in ARID1A. Nat Commun 2016; 7:13837. [PMID: 27958275 PMCID: PMC5159945 DOI: 10.1038/ncomms13837] [Citation(s) in RCA: 251] [Impact Index Per Article: 31.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Accepted: 11/03/2016] [Indexed: 01/01/2023] Open
Abstract
Identifying genetic biomarkers of synthetic lethal drug sensitivity effects provides one approach to the development of targeted cancer therapies. Mutations in ARID1A represent one of the most common molecular alterations in human cancer, but therapeutic approaches that target these defects are not yet clinically available. We demonstrate that defects in ARID1A sensitize tumour cells to clinical inhibitors of the DNA damage checkpoint kinase, ATR, both in vitro and in vivo. Mechanistically, ARID1A deficiency results in topoisomerase 2A and cell cycle defects, which cause an increased reliance on ATR checkpoint activity. In ARID1A mutant tumour cells, inhibition of ATR triggers premature mitotic entry, genomic instability and apoptosis. The data presented here provide the pre-clinical and mechanistic rationale for assessing ARID1A defects as a biomarker of single-agent ATR inhibitor response and represents a novel synthetic lethal approach to targeting tumour cells.
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Affiliation(s)
- Chris T. Williamson
- The CRUK Gene Function Laboratory, The Institute of Cancer Research, London
SW3 6JB, UK
- The Breast Cancer Now Toby Robins Breast Cancer Research Centre, The Institute of Cancer Research, London
SW3 6JB, UK
| | - Rowan Miller
- The CRUK Gene Function Laboratory, The Institute of Cancer Research, London
SW3 6JB, UK
- The Breast Cancer Now Toby Robins Breast Cancer Research Centre, The Institute of Cancer Research, London
SW3 6JB, UK
| | - Helen N. Pemberton
- The CRUK Gene Function Laboratory, The Institute of Cancer Research, London
SW3 6JB, UK
- The Breast Cancer Now Toby Robins Breast Cancer Research Centre, The Institute of Cancer Research, London
SW3 6JB, UK
| | - Samuel E. Jones
- The CRUK Gene Function Laboratory, The Institute of Cancer Research, London
SW3 6JB, UK
- The Breast Cancer Now Toby Robins Breast Cancer Research Centre, The Institute of Cancer Research, London
SW3 6JB, UK
| | - James Campbell
- The CRUK Gene Function Laboratory, The Institute of Cancer Research, London
SW3 6JB, UK
- The Breast Cancer Now Toby Robins Breast Cancer Research Centre, The Institute of Cancer Research, London
SW3 6JB, UK
| | - Asha Konde
- The CRUK Gene Function Laboratory, The Institute of Cancer Research, London
SW3 6JB, UK
- The Breast Cancer Now Toby Robins Breast Cancer Research Centre, The Institute of Cancer Research, London
SW3 6JB, UK
| | - Nicholas Badham
- The CRUK Gene Function Laboratory, The Institute of Cancer Research, London
SW3 6JB, UK
- The Breast Cancer Now Toby Robins Breast Cancer Research Centre, The Institute of Cancer Research, London
SW3 6JB, UK
| | - Rumana Rafiq
- The CRUK Gene Function Laboratory, The Institute of Cancer Research, London
SW3 6JB, UK
- The Breast Cancer Now Toby Robins Breast Cancer Research Centre, The Institute of Cancer Research, London
SW3 6JB, UK
| | - Rachel Brough
- The CRUK Gene Function Laboratory, The Institute of Cancer Research, London
SW3 6JB, UK
- The Breast Cancer Now Toby Robins Breast Cancer Research Centre, The Institute of Cancer Research, London
SW3 6JB, UK
| | - Aditi Gulati
- The CRUK Gene Function Laboratory, The Institute of Cancer Research, London
SW3 6JB, UK
- The Breast Cancer Now Toby Robins Breast Cancer Research Centre, The Institute of Cancer Research, London
SW3 6JB, UK
| | - Colm J. Ryan
- Systems Biology Ireland, University College Dublin, Dublin
4, Ireland
| | - Jeff Francis
- The CRUK Gene Function Laboratory, The Institute of Cancer Research, London
SW3 6JB, UK
- The Breast Cancer Now Toby Robins Breast Cancer Research Centre, The Institute of Cancer Research, London
SW3 6JB, UK
| | - Peter B. Vermulen
- The Breast Cancer Now Toby Robins Breast Cancer Research Centre, The Institute of Cancer Research, London
SW3 6JB, UK
- GZA Hospitals Sint-Augustinus, Wilrijk, Belgium and Center for Oncological Research, University of Antwerp, Oosterveldlaan 24, Wilrijk Antwerp
2610, Belgium
| | - Andrew R. Reynolds
- The Breast Cancer Now Toby Robins Breast Cancer Research Centre, The Institute of Cancer Research, London
SW3 6JB, UK
| | - Philip M. Reaper
- Vertex Pharmaceuticals (Europe) Limited, Milton Park, Abingdon, Oxfordshire
OX14 4RY, UK
| | - John R. Pollard
- Vertex Pharmaceuticals (Europe) Limited, Milton Park, Abingdon, Oxfordshire
OX14 4RY, UK
| | - Alan Ashworth
- The CRUK Gene Function Laboratory, The Institute of Cancer Research, London
SW3 6JB, UK
- The Breast Cancer Now Toby Robins Breast Cancer Research Centre, The Institute of Cancer Research, London
SW3 6JB, UK
| | - Christopher J. Lord
- The CRUK Gene Function Laboratory, The Institute of Cancer Research, London
SW3 6JB, UK
- The Breast Cancer Now Toby Robins Breast Cancer Research Centre, The Institute of Cancer Research, London
SW3 6JB, UK
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193
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Ronco C, Martin AR, Demange L, Benhida R. ATM, ATR, CHK1, CHK2 and WEE1 inhibitors in cancer and cancer stem cells. MEDCHEMCOMM 2016; 8:295-319. [PMID: 30108746 DOI: 10.1039/c6md00439c] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Accepted: 11/25/2016] [Indexed: 12/15/2022]
Abstract
DNA inevitably undergoes a high number of damages throughout the cell cycle. To preserve the integrity of the genome, cells have developed a complex enzymatic machinery aimed at sensing and repairing DNA lesions, pausing the cell cycle to provide more time to repair, or induce apoptosis if damages are too severe. This so-called DNA-damage response (DDR) is yet considered as a major source of resistance to DNA-damaging treatments in oncology. Recently, it has been hypothesized that cancer stem cells (CSC), a sub-population of cancer cells particularly resistant and with tumour-initiating ability, allow tumour re-growth and cancer relapse. Therefore, DDR appears as a relevant target to sensitize cancer cells and cancer stem cells to classical radio- and chemotherapies as well as to overcome resistances. Moreover, the concept of synthetic lethality could be particularly efficiently exploited in DDR. Five kinases play pivotal roles in the DDR: ATM, ATR, CHK1, CHK2 and WEE1. Herein, we review the drugs targeting these proteins and the inhibitors used in the specific case of CSC. We also suggest molecules that may be of interest for preclinical and clinical researchers studying checkpoint inhibition to sensitize cancer and cancer stem cells to DNA-damaging treatments.
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Affiliation(s)
- Cyril Ronco
- Université Côte d'Azur , CNRS , Institut de Chimie de Nice , UMR7272 - Parc Valrose , 06108 Nice Cedex 2 , France . ; ; Tel: +33 4 92076143
| | - Anthony R Martin
- Université Côte d'Azur , CNRS , Institut de Chimie de Nice , UMR7272 - Parc Valrose , 06108 Nice Cedex 2 , France . ; ; Tel: +33 4 92076143
| | - Luc Demange
- Université Côte d'Azur , CNRS , Institut de Chimie de Nice , UMR7272 - Parc Valrose , 06108 Nice Cedex 2 , France . ; ; Tel: +33 4 92076143.,Université Paris Descartes , Sorbonne Paris Cité , UFR des Sciences Pharmaceutiques , 4 avenue de l'Observatoire , Paris Fr-75006 , France.,Université Paris Descartes , Sorbonne Paris Cité , UFR Biomédicale des Saints Pères , 45 rue des Saints Pères , France
| | - Rachid Benhida
- Université Côte d'Azur , CNRS , Institut de Chimie de Nice , UMR7272 - Parc Valrose , 06108 Nice Cedex 2 , France . ; ; Tel: +33 4 92076143
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194
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The mutational signature of chronic lymphocytic leukemia. Biochem J 2016; 473:3725-3740. [DOI: 10.1042/bcj20160256] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Accepted: 08/23/2016] [Indexed: 01/14/2023]
Abstract
Advances in next-generation sequencing technologies continue to unravel the cancer genome, identifying key biological pathways important for disease pathogenesis and clinically relevant genetic lesions. These studies have provided unprecedented resolution of the cancer genome, facilitating significant advances in the ability to detect many cancers, and predict patients who will develop an aggressive disease or respond poorly to treatment. The mature B-cell neoplasm chronic lymphocytic leukaemia remains at the forefront of these genomic analyses, largely due its protracted natural history and the accessibility to suitable material for study. We now possess a comprehensive view of the genomic copy number mutational landscape of the disease, as well as a detail description of clonal evolution, and the molecular mechanisms that drive the acquisition of genomic lesions and more broadly, genomic complexity. Here, recent genomic insights with associated biological and clinical implications will be reviewed.
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195
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Justiniano SE, McElroy JP, Yu L, Yilmaz AS, Coombes KR, Senter L, Nagy R, Wakely P, Volinia S, Vinco M, Giordano TJ, Croce CM, Saji M, Ringel MD. Genetic variants in thyroid cancer distant metastases. Endocr Relat Cancer 2016; 23:L33-6. [PMID: 27542854 PMCID: PMC5026957 DOI: 10.1530/erc-16-0351] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2016] [Accepted: 08/19/2016] [Indexed: 12/30/2022]
Affiliation(s)
- Steven E Justiniano
- Division of EndocrinologyDiabetes, and Metabolism, The Ohio State University, Columbus, OH, USA
| | - Joseph P McElroy
- Center for Biostatistics and Department of BioinformaticsThe Ohio State University, Columbus, OH, USA
| | - Lianbo Yu
- Center for Biostatistics and Department of BioinformaticsThe Ohio State University, Columbus, OH, USA
| | - Ayse Selen Yilmaz
- Center for Biostatistics and Department of BioinformaticsThe Ohio State University, Columbus, OH, USA
| | - Kevin R Coombes
- Center for Biostatistics and Department of BioinformaticsThe Ohio State University, Columbus, OH, USA
| | - Leigha Senter
- Division of Human GeneticsThe Ohio State University, Columbus, OH, USA
| | - Rebecca Nagy
- Division of Human GeneticsThe Ohio State University, Columbus, OH, USA Guardant HealthInc, Redwood City, California, USA
| | - Paul Wakely
- Department of PathologyThe Ohio State University, Columbus, OH, USA
| | - Stefano Volinia
- Department of MorphologySurgery and Experimental Medicine, University of Ferrara, Italy
| | - Michelle Vinco
- Department of PathologyUniversity of Michigan, Ann Arbor, Michigan, USA
| | - Thomas J Giordano
- Department of PathologyUniversity of Michigan, Ann Arbor, Michigan, USA Comprehensive Cancer CenterUniversity of Michigan, Ann Arbor, Michigan, USA
| | - Carlo M Croce
- Department of Molecular VirologyImmunology, and Genetics, The Ohio State University Wexner Medical Center and Arthur G. James Comprehensive Cancer Center, Columbus, Ohio, USA
| | - Motoyasu Saji
- Division of EndocrinologyDiabetes, and Metabolism, The Ohio State University, Columbus, OH, USA
| | - Matthew D Ringel
- Division of EndocrinologyDiabetes, and Metabolism, The Ohio State University, Columbus, OH, USA Department of Molecular VirologyImmunology, and Genetics, The Ohio State University Wexner Medical Center and Arthur G. James Comprehensive Cancer Center, Columbus, Ohio, USA
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196
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Morgado-Palacin I, Day A, Murga M, Lafarga V, Anton ME, Tubbs A, Chen HT, Ergan A, Anderson R, Bhandoola A, Pike KG, Barlaam B, Cadogan E, Wang X, Pierce AJ, Hubbard C, Armstrong SA, Nussenzweig A, Fernandez-Capetillo O. Targeting the kinase activities of ATR and ATM exhibits antitumoral activity in mouse models of MLL-rearranged AML. Sci Signal 2016; 9:ra91. [PMID: 27625305 DOI: 10.1126/scisignal.aad8243] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Among the various subtypes of acute myeloid leukemia (AML), those with chromosomal rearrangements of the MLL oncogene (AML-MLL) have a poor prognosis. AML-MLL tumor cells are resistant to current genotoxic therapies because of an attenuated response by p53, a protein that induces cell cycle arrest and apoptosis in response to DNA damage. In addition to chemicals that damage DNA, efforts have focused on targeting DNA repair enzymes as a general chemotherapeutic approach to cancer treatment. Here, we found that inhibition of the kinase ATR, which is the primary sensor of DNA replication stress, induced chromosomal breakage and death of mouse AML(MLL) cells (with an MLL-ENL fusion and a constitutively active N-RAS independently of p53. Moreover, ATR inhibition as a single agent exhibited antitumoral activity, both reducing tumor burden after establishment and preventing tumors from growing, in an immunocompetent allograft mouse model of AML(MLL) and in xenografts of a human AML-MLL cell line. We also found that inhibition of ATM, a kinase that senses DNA double-strand breaks, also promoted the survival of the AML(MLL) mice. Collectively, these data indicated that ATR or ATM inhibition represent potential therapeutic strategies for the treatment of AML, especially MLL-driven leukemias.
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Affiliation(s)
- Isabel Morgado-Palacin
- Genomic Instability Group; Spanish National Cancer Research Center (CNIO); Madrid 28029, Spain
| | - Amanda Day
- Laboratory of Genome Integrity; National Cancer Institute; National Institutes of Health; Bethesda, MD 20892, USA
| | - Matilde Murga
- Genomic Instability Group; Spanish National Cancer Research Center (CNIO); Madrid 28029, Spain
| | - Vanesa Lafarga
- Genomic Instability Group; Spanish National Cancer Research Center (CNIO); Madrid 28029, Spain
| | - Marta Elena Anton
- Genomic Instability Group; Spanish National Cancer Research Center (CNIO); Madrid 28029, Spain
| | - Anthony Tubbs
- Laboratory of Genome Integrity; National Cancer Institute; National Institutes of Health; Bethesda, MD 20892, USA
| | - Hua Tang Chen
- Laboratory of Genome Integrity; National Cancer Institute; National Institutes of Health; Bethesda, MD 20892, USA
| | - Aysegul Ergan
- Laboratory of Genome Integrity; National Cancer Institute; National Institutes of Health; Bethesda, MD 20892, USA
| | - Rhonda Anderson
- Laboratory of Genome Integrity; National Cancer Institute; National Institutes of Health; Bethesda, MD 20892, USA
| | - Avinash Bhandoola
- Laboratory of Genome Integrity; National Cancer Institute; National Institutes of Health; Bethesda, MD 20892, USA
| | | | | | | | - Xi Wang
- Human Oncology and Pathogenesis Program and Department of Pediatrics, Memorial Sloan-Kettering Cancer Center, New York, New York 10065, USA
| | | | - Chad Hubbard
- Laboratory of Genome Integrity; National Cancer Institute; National Institutes of Health; Bethesda, MD 20892, USA
| | - Scott A Armstrong
- Human Oncology and Pathogenesis Program and Department of Pediatrics, Memorial Sloan-Kettering Cancer Center, New York, New York 10065, USA
| | - André Nussenzweig
- Laboratory of Genome Integrity; National Cancer Institute; National Institutes of Health; Bethesda, MD 20892, USA
| | - Oscar Fernandez-Capetillo
- Genomic Instability Group; Spanish National Cancer Research Center (CNIO); Madrid 28029, Spain.,Science for Life Laboratory, Division of Translational Medicine and Chemical Biology, Department of Medical Biochemistry and Biophysics, Karolinska Institute, 17165 Solna, Sweden
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197
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Jiang Y, Chen HC, Su X, Thompson PA, Liu X, Do KA, Wierda W, Keating MJ, Plunkett W. ATM function and its relationship with ATM gene mutations in chronic lymphocytic leukemia with the recurrent deletion (11q22.3-23.2). Blood Cancer J 2016; 6:e465. [PMID: 27588518 PMCID: PMC5056966 DOI: 10.1038/bcj.2016.69] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2016] [Accepted: 07/06/2016] [Indexed: 01/02/2023] Open
Abstract
Approximately 10–20% of chronic lymphocytic leukemia (CLL) patients exhibit del(11q22–23) before treatment, this cohort increases to over 40% upon progression following chemoimmunotherapy. The coding sequence of the DNA damage response gene, ataxia-telangiectasia-mutated (ATM), is contained in this deletion. The residual ATM allele is frequently mutated, suggesting a relationship between gene function and clinical response. To investigate this possibility, we sought to develop and validate an assay for the function of ATM protein in these patients. SMC1 (structural maintenance of chromosomes 1) and KAP1 (KRAB-associated protein 1) were found to be unique substrates of ATM kinase by immunoblot detection following ionizing radiation. Using a pool of eight fluorescence in situ hybridization-negative CLL samples as a standard, the phosphorylation of SMC1 and KAP1 from 46 del (11q22–23) samples was analyzed using normal mixture model-based clustering. This identified 13 samples (28%) that were deficient in ATM function. Targeted sequencing of the ATM gene of these samples, with reference to genomic DNA, revealed 12 somatic mutations and 15 germline mutations in these samples. No strong correlation was observed between ATM mutation and function. Therefore, mutation status may not be taken as an indicator of ATM function. Rather, a direct assay of the kinase activity should be used in the development of therapies.
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Affiliation(s)
- Y Jiang
- Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - H-C Chen
- Department of Biostatistics, Houston, TX, USA
| | - X Su
- Department of Bioinformatics and Computational Biology, Houston, TX, USA
| | - P A Thompson
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - X Liu
- Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - K-A Do
- Department of Biostatistics, Houston, TX, USA
| | - W Wierda
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - M J Keating
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - W Plunkett
- Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.,Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
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198
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Alsagaby SA, Brennan P, Pepper C. Key Molecular Drivers of Chronic Lymphocytic Leukemia. CLINICAL LYMPHOMA MYELOMA & LEUKEMIA 2016; 16:593-606. [PMID: 27601002 DOI: 10.1016/j.clml.2016.08.008] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Revised: 06/29/2016] [Accepted: 08/02/2016] [Indexed: 01/01/2023]
Abstract
Chronic lymphocytic leukemia (CLL) is an adult neoplastic disease of B cells characterized by variable clinical outcomes. Although some patients have an aggressive form of the disease and often encounter treatment failure and short survival, others have more stable disease with long-term survival and little or no need for theraphy. In the past decade, significant advances have been made in our understanding of the molecular drivers that affect the natural pathology of CLL. The present review describes what is known about these key molecules in the context of their role in tumor pathogenicity, prognosis, and therapy.
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Affiliation(s)
- Suliman A Alsagaby
- Department of Medical Laboratory, College of Science, Majmaah University, Al-Zuli, Kingdom of Saudi Arabia; Institute of Cancer and Genetics, School of Medicine, Cardiff University, Cardiff, United Kingdom.
| | - Paul Brennan
- Institute of Cancer and Genetics, School of Medicine, Cardiff University, Cardiff, United Kingdom
| | - Chris Pepper
- Institute of Cancer and Genetics, School of Medicine, Cardiff University, Cardiff, United Kingdom
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199
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Choi M, Kipps T, Kurzrock R. ATM Mutations in Cancer: Therapeutic Implications. Mol Cancer Ther 2016; 15:1781-91. [PMID: 27413114 DOI: 10.1158/1535-7163.mct-15-0945] [Citation(s) in RCA: 312] [Impact Index Per Article: 39.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Accepted: 04/25/2016] [Indexed: 01/25/2023]
Abstract
Activation of checkpoint arrest and homologous DNA repair are necessary for maintenance of genomic integrity during DNA replication. Germ-line mutations of the ataxia telangiectasia mutated (ATM) gene result in the well-characterized ataxia telangiectasia syndrome, which manifests with an increased cancer predisposition, including a 20% to 30% lifetime risk of lymphoid, gastric, breast, central nervous system, skin, and other cancers. Somatic ATM mutations or deletions are commonly found in lymphoid malignancies, as well as a variety of solid tumors. Such mutations may result in chemotherapy resistance and adverse prognosis, but may also be exploited by existing or emerging targeted therapies that produce synthetic lethal states. Mol Cancer Ther; 15(8); 1781-91. ©2016 AACR.
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Affiliation(s)
- Michael Choi
- Center for Personalized Cancer Therapy, and Division of Hematology and Oncology, UCSD Moores Cancer Center, La Jolla, California.
| | - Thomas Kipps
- Center for Personalized Cancer Therapy, and Division of Hematology and Oncology, UCSD Moores Cancer Center, La Jolla, California
| | - Razelle Kurzrock
- Center for Personalized Cancer Therapy, and Division of Hematology and Oncology, UCSD Moores Cancer Center, La Jolla, California
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200
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Emerging targets for radioprotection and radiosensitization in radiotherapy. Tumour Biol 2016; 37:11589-11609. [DOI: 10.1007/s13277-016-5117-8] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Accepted: 06/09/2016] [Indexed: 01/12/2023] Open
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