1
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Rinaldi F, Girotto S. Structure-based approaches in synthetic lethality strategies. Curr Opin Struct Biol 2024; 88:102895. [PMID: 39137490 DOI: 10.1016/j.sbi.2024.102895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2024] [Revised: 07/15/2024] [Accepted: 07/17/2024] [Indexed: 08/15/2024]
Abstract
Evolution has fostered robust DNA damage response (DDR) mechanisms to combat DNA lesions. However, disruptions in this intricate machinery can render cells overly reliant on the remaining functional but often less accurate DNA repair pathways. This increased dependence on error-prone pathways may result in improper repair and the accumulation of mutations, fostering genomic instability and facilitating the uncontrolled cell proliferation characteristic of cancer initiation and progression. Strategies based on the concept of synthetic lethality (SL) leverage the inherent genomic instability of cancer cells by targeting alternative pathways, thereby inducing selective death of cancer cells. This review emphasizes recent advancements in structural investigations of pivotal SL targets. The significant contribution of structure-based methodologies to SL research underscores their potential impact in characterizing the growing number of SL targets, largely due to advances in next-generation sequencing. Harnessing these approaches is essential for advancing the development of precise and personalized SL therapeutic strategies.
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Affiliation(s)
- Francesco Rinaldi
- Computational and Chemical Biology, Istituto Italiano di Tecnologia, 16163 Genoa, Italy
| | - Stefania Girotto
- Structural Biophysics Facility, Istituto Italiano di Tecnologia, 16163 Genoa, Italy.
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2
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Lu G, Zou Z, Xin M, Meng Y, Cheng Z, Du Z, Gu J, Zhang X, Zou Y. Carbamoylation at C-8 position of natural 3-arylcoumarin scaffold for the discovery of novel PARP-1 inhibitors with potent anticancer activity. Eur J Med Chem 2024; 277:116726. [PMID: 39116535 DOI: 10.1016/j.ejmech.2024.116726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2024] [Revised: 07/21/2024] [Accepted: 07/28/2024] [Indexed: 08/10/2024]
Abstract
Structural modification based on natural privileged scaffolds has proven to be an attractive approach to generate potential antitumor candidates with high potency and specific targeting. As a continuation of our efforts to identify potent PARP-1 inhibitors, natural 3-arylcoumarin scaffold was served as the starting point for the construction of novel structural unit for PARP-1 inhibition. Herein, a series of novel 8-carbamyl-3-arylcoumarin derivatives were designed and synthesized. The antiproliferative activities of target compounds against four BRCA-mutated cancer cells (SUM149PT, HCC1937, MDA-MB-436 and Capan-1) were evaluated. Among them, compound 9b exhibited excellent antiproliferative effects against SUM149PT, HCC1937 and Capan-1 cells with IC50 values of 0.62, 1.91 and 4.26 μM, respectively. Moreover, 9b could significantly inhibit the intracellular PARP-1/2 activity in SUM149PT cells with IC50 values of 2.53 nM and 6.45 nM, respectively. Further mechanism studies revealed that 9b could aggravate DNA double-strand breaks, increase ROS production, decrease mitochondrial membrane potential, arrest cell cycle at G2/M phase and ultimately induce apoptosis in SUM149PT cells. In addition, molecular docking study demonstrated that the binding mode of 9b with PARP-1 was similar to that of niraparib, forming multiple hydrogen bond interactions with the active site of PARP-1. Taken together, these findings suggest that 8-carbamyl-3-arylcoumarin scaffold could serve as an effective structural unit for PARP-1 inhibition and offer a valuable paradigm for the structural modification of natural products.
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Affiliation(s)
- Guoqing Lu
- State Key Laboratory of Anti-Infective Drug Discovery and Development, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, PR China
| | - Zhiru Zou
- State Key Laboratory of Anti-Infective Drug Discovery and Development, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, PR China
| | - Meixiu Xin
- State Key Laboratory of Anti-Infective Drug Discovery and Development, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, PR China
| | - Yingfen Meng
- State Key Laboratory of Anti-Infective Drug Discovery and Development, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, PR China
| | - Zhuo Cheng
- State Key Laboratory of Anti-Infective Drug Discovery and Development, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, PR China
| | - Zhibo Du
- Zhongshan Wanhan Pharmaceuticals Co., Ltd., Zhongshan, 528451, PR China
| | - Jiayi Gu
- State Key Laboratory of Anti-Infective Drug Discovery and Development, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, PR China
| | - Xuejing Zhang
- State Key Laboratory of Anti-Infective Drug Discovery and Development, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, PR China
| | - Yong Zou
- State Key Laboratory of Anti-Infective Drug Discovery and Development, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, PR China.
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3
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Li Y, Kong X, Chu X, Fu H, Feng X, Zhao C, Deng Y, Ge J. Targeting NAD Metabolism: Rational Design, Synthesis and In Vitro Evaluation of NAMPT/PARP1 Dual-Target Inhibitors as Anti-Breast Cancer Agents. Molecules 2024; 29:2836. [PMID: 38930900 PMCID: PMC11206297 DOI: 10.3390/molecules29122836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2024] [Revised: 06/04/2024] [Accepted: 06/11/2024] [Indexed: 06/28/2024] Open
Abstract
The malignancy of breast cancer poses a global challenge, with existing treatments often falling short of desired efficacy. Extensive research has underscored the effectiveness of targeting the metabolism of nicotinamide adenine dinucleotide (NAD), a pivotal molecule crucial for cancer cell survival and growth, as a promising anticancer strategy. Within mammalian cells, sustaining optimal NAD concentrations relies on two key enzymes, namely nicotinamide phosphoribosyltransferase (NAMPT) and poly(ADP-ribose) polymer 1 (PARP1). Recent studies have accentuated the potential benefits of combining NAMPT inhibitors and PARP1 inhibitors to enhance therapeutic outcomes, particularly in breast cancer. In this study, we designed and synthesized eleven novel NAMPT/PARP1 dual-target inhibitors. Among them, compound DDY02 exhibited acceptable inhibitory activities against both NAMPT and PARP1, with IC50 values of 0.01 and 0.05 µM, respectively. Moreover, in vitro evaluations revealed that treatment with DDY02 resulted in proliferation inhibition, NAD depletion, DNA damage, apoptosis, and migration inhibition in MDA-MB-468 cells. These results posit DDY02, by targeting NAD metabolism through inhibiting both NAMPT and PARP1, as a promising lead compound for the development of breast cancer therapy.
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Affiliation(s)
- Yingpeng Li
- College of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
- Tianjin Key Laboratory of Therapeutic Substance of Traditional Chinese Medicine, Tianjin 301617, China
| | - Xianxiu Kong
- College of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
- Tianjin Key Laboratory of Therapeutic Substance of Traditional Chinese Medicine, Tianjin 301617, China
| | - Xinhong Chu
- College of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
- Tianjin Key Laboratory of Therapeutic Substance of Traditional Chinese Medicine, Tianjin 301617, China
| | - Hui Fu
- College of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Xinchi Feng
- College of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
- Tianjin Key Laboratory of Therapeutic Substance of Traditional Chinese Medicine, Tianjin 301617, China
| | - Chengcheng Zhao
- Experimental Teaching and Practical Training Center, Heilongjiang University of Chinese Medicine, Harbin 150040, China
| | - Yanru Deng
- College of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
- Tianjin Key Laboratory of Therapeutic Substance of Traditional Chinese Medicine, Tianjin 301617, China
| | - Jun Ge
- College of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
- Tianjin Key Laboratory of Therapeutic Substance of Traditional Chinese Medicine, Tianjin 301617, China
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4
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Kaur P, Singh SK, Mishra MK, Singh S, Singh R. Promising Combinatorial Therapeutic Strategies against Non-Small Cell Lung Cancer. Cancers (Basel) 2024; 16:2205. [PMID: 38927911 PMCID: PMC11201636 DOI: 10.3390/cancers16122205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2024] [Revised: 06/10/2024] [Accepted: 06/11/2024] [Indexed: 06/28/2024] Open
Abstract
Non-small cell lung cancer (NSCLC) presents a complex and diverse disease, exhibiting variations at individuals' cellular and histological levels. This complexity gives rise to different subtypes and genetic mutations, posing challenges for accurate diagnosis and effective treatment. Nevertheless, continuous progress in medical research and therapies is continually shaping the landscape of NSCLC diagnosis and management. The treatment of NSCLC has undergone significant advancements in recent years, especially with the emergence of targeted therapies that have shown remarkable efficacy in patients with actionable mutations. This has ushered in the era of personalized medicine in NSCLC treatment, with improvements in molecular and immunohistochemical techniques contributing to enhanced progression-free survival. This review focuses on the latest progress, challenges, and future directions in developing targeted therapies for NSCLC, including tyrosine kinase inhibitors (TKIs), DNA-damaging agents, immunotherapy regimens, natural drug therapy, and nanobodies. Furthermore, recent randomized studies have demonstrated enhanced overall survival in patients receiving different targeted and natural drug therapies.
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Affiliation(s)
- Prabhjot Kaur
- Department of Microbiology, Biochemistry, and Immunology, Morehouse School of Medicine, Atlanta, GA 30310, USA; (P.K.); (S.K.S.); (S.S.)
| | - Santosh Kumar Singh
- Department of Microbiology, Biochemistry, and Immunology, Morehouse School of Medicine, Atlanta, GA 30310, USA; (P.K.); (S.K.S.); (S.S.)
| | - Manoj K. Mishra
- Cancer Biology Research and Training, Department of Biological Sciences, Alabama State University, Montgomery, AL 36014, USA;
| | - Shailesh Singh
- Department of Microbiology, Biochemistry, and Immunology, Morehouse School of Medicine, Atlanta, GA 30310, USA; (P.K.); (S.K.S.); (S.S.)
- Cancer Health Equity Institute, Morehouse School of Medicine, Atlanta, GA 30310, USA
| | - Rajesh Singh
- Department of Microbiology, Biochemistry, and Immunology, Morehouse School of Medicine, Atlanta, GA 30310, USA; (P.K.); (S.K.S.); (S.S.)
- Cancer Health Equity Institute, Morehouse School of Medicine, Atlanta, GA 30310, USA
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5
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Yu L, Wang YD, Yan ZW, Zhang LY, Li S. Development of erythrina-based PARP-1/FTase dual-target inhibitors against lung cancer epithelial-mesenchymal transition (EMT) in vivo and in vitro. Bioorg Chem 2024; 148:107480. [PMID: 38772291 DOI: 10.1016/j.bioorg.2024.107480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Revised: 05/07/2024] [Accepted: 05/18/2024] [Indexed: 05/23/2024]
Abstract
A novel series of erythrina derivatives as PARP-1/FTase inhibitors were synthesized, and evaluated for their biological activities. Compound T9 had excellent inhibitory effects on cell viability (A549: IC50 = 1.74 μM; A549/5-Fu: IC50 = 1.03 μM) and in vitro enzyme activities (PARP-1: IC50 = 0.40 μM; FTase: IC50 = 0.067 μM). Molecular docking and point mutation assays demonstrated the interaction of compound T9 with key amino acid residues. The compound T9 exhibited potent anti-proliferation and anti-migration capabilities against A549 and A549/5-Fu cells. PCR array and western blot results showed that compound T9 could effectively inhibit EMT-related proteins in A549 and A549/5-Fu cells, thereby inhibiting the development of lung cancer. Importantly, compound T9 could significantly inhibit tumor growth in the A549 xenograft tumor model (TGI = 65.3 %). In conclusion, this study was the first presentation of the concept of dual-target inhibitors of the PARP-1/FTase enzymes. It also provides the basis for further research and development of novel PARP-1/FTase inhibitors.
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Affiliation(s)
- Ling Yu
- Department of Pharmacy, Anorectal Hospital of Chengde Medical University, Chengde 067000, PR China
| | - You-de Wang
- Key Laboratory of Traditional Chinese Medicine Research and Development of Hebei Province, Hebei Key Laboratory of Nerve Injury and Repair, Institute of Traditional Chinese Medicine, Chengde Medical University, Chengde 067000, PR China
| | - Zhi-Wei Yan
- Key Laboratory of Traditional Chinese Medicine Research and Development of Hebei Province, Hebei Key Laboratory of Nerve Injury and Repair, Institute of Traditional Chinese Medicine, Chengde Medical University, Chengde 067000, PR China
| | - Li-Ying Zhang
- Key Laboratory of Traditional Chinese Medicine Research and Development of Hebei Province, Hebei Key Laboratory of Nerve Injury and Repair, Institute of Traditional Chinese Medicine, Chengde Medical University, Chengde 067000, PR China
| | - Shuai Li
- Key Laboratory of Traditional Chinese Medicine Research and Development of Hebei Province, Hebei Key Laboratory of Nerve Injury and Repair, Institute of Traditional Chinese Medicine, Chengde Medical University, Chengde 067000, PR China.
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6
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Lozon L, Ramadan WS, Kawaf RR, Al-Shihabi AM, El-Awady R. Decoding cell death signalling: Impact on the response of breast cancer cells to approved therapies. Life Sci 2024; 342:122525. [PMID: 38423171 DOI: 10.1016/j.lfs.2024.122525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2023] [Revised: 02/04/2024] [Accepted: 02/21/2024] [Indexed: 03/02/2024]
Abstract
Breast cancer is a principal cause of cancer-related mortality in female worldwide. While many approved therapies have shown promising outcomes in treating breast cancer, understanding the intricate signalling pathways controlling cell death is crucial for optimizing the treatment outcome. A growing body of evidence has unveiled the aberrations in multiple cell death pathways across diverse cancer types, highlighting these pathways as appealing targets for therapeutic interventions. In this review, we provide a comprehensive overview of the current state of knowledge on the cell death signalling mechanisms with a particular focus on their impact on the response of breast cancer cells to approved therapies. Additionally, we discuss the potentials of combination therapies that exploit the synergy between approved drugs and therapeutic agents targeting modulators of cell death pathways.
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Affiliation(s)
- Lama Lozon
- College of Medicine, University of Sharjah, Sharjah 27272, United Arab Emirates; Research Institute for Medical and Health Sciences, University of Sharjah, Sharjah 27272, United Arab Emirates.
| | - Wafaa S Ramadan
- Research Institute for Medical and Health Sciences, University of Sharjah, Sharjah 27272, United Arab Emirates.
| | - Rawan R Kawaf
- Research Institute for Medical and Health Sciences, University of Sharjah, Sharjah 27272, United Arab Emirates; College of Pharmacy, University of Sharjah, Sharjah 27272, United Arab Emirates.
| | - Aya M Al-Shihabi
- Research Institute for Medical and Health Sciences, University of Sharjah, Sharjah 27272, United Arab Emirates; College of Pharmacy, University of Sharjah, Sharjah 27272, United Arab Emirates.
| | - Raafat El-Awady
- Research Institute for Medical and Health Sciences, University of Sharjah, Sharjah 27272, United Arab Emirates; College of Pharmacy, University of Sharjah, Sharjah 27272, United Arab Emirates.
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7
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Bastos IM, Rebelo S, Silva VLM. A review of poly(ADP-ribose)polymerase-1 (PARP1) role and its inhibitors bearing pyrazole or indazole core for cancer therapy. Biochem Pharmacol 2024; 221:116045. [PMID: 38336156 DOI: 10.1016/j.bcp.2024.116045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 01/10/2024] [Accepted: 02/02/2024] [Indexed: 02/12/2024]
Abstract
Cancer is a disease with a high mortality rate characterized by uncontrolled proliferation of abnormal cells. The hallmarks of cancer evidence the acquired cells characteristics that promote the growth of malignant tumours, including genomic instability and mutations, the ability to evade cellular death and the capacity of sustaining proliferative signalization. Poly(ADP-ribose) polymerase-1 (PARP1) is a protein that plays key roles in cellular regulation, namely in DNA damage repair and cell survival. The inhibition of PARP1 promotes cellular death in cells with homologous recombination deficiency, and therefore, the interest in PARP protein has been rising as a target for anticancer therapies. There are already some PARP1 inhibitors approved by Food and Drug Administration (FDA), such as Olaparib and Niraparib. The last compound presents in its structure an indazole core. In fact, pyrazoles and indazoles have been raising interest due to their various medicinal properties, namely, anticancer activity. Derivatives of these compounds have been studied as inhibitors of PARP1 and presented promising results. Therefore, this review aims to address the importance of PARP1 in cell regulation and its role in cancer. Moreover, it intends to report a comprehensive literature review of PARP1 inhibitors, containing the pyrazole and indazole scaffolds, published in the last fifteen years, focusing on structure-activity relationship aspects, thus providing important insights for the design of novel and more effective PARP1 inhibitors.
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Affiliation(s)
- Inês M Bastos
- LAQV-REQUIMTE and Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Sandra Rebelo
- Institute of Biomedicine-iBiMED, Department of Medical Sciences, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Vera L M Silva
- LAQV-REQUIMTE and Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal.
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8
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El Hassab MA, El-Hafeez AAA, Almahli H, Elsayed ZM, Eldehna WM, Hassan GS, Abou-Seri SM. Phthalimide-tethered isatins as novel poly(ADP-ribose) polymerase inhibitors: Design, synthesis, biological evaluations, and molecular modeling investigations. Arch Pharm (Weinheim) 2024; 357:e2300599. [PMID: 38100160 DOI: 10.1002/ardp.202300599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2023] [Revised: 11/20/2023] [Accepted: 11/23/2023] [Indexed: 03/03/2024]
Abstract
Humanity is currently facing various diseases with significant mortality rates, particularly those associated with malignancies. Numerous enzymes and proteins have been identified as highly promising targets for the treatment of cancer. The poly(ADP-ribose) polymerases (PARPs) family comprises 17 members which are essential in DNA damage repair, allowing the survival of cancer cells. Unlike other PARP family members, PARP-1 and, to a lesser extent, PARP-2 show more than 90% activity in response to DNA damage. PARP-1 levels were shown to be elevated in various tumor cells, including breast, lung, ovarian, and prostate cancer and melanomas. Accordingly, novel series of phthalimide-tethered isatins (6a-n, 10a-e, and 11a-e) were synthesized as potential PARP-1 inhibitors endowed with anticancer activity. All the synthesized molecules were assessed against PARP-1, where compounds 6f and 10d showed nanomolar activities with IC50 = 15.56 ± 2.85 and 13.65 ± 1.42 nM, respectively. Also, the assessment of the antiproliferative effects of the synthesized isatins was conducted on four cancer cell lines: leukemia (K-562), liver (HepG2), and breast (MCF-7 and HCC1937) cancers. Superiorly, compounds 6f and 10d demonstrated submicromolar IC50 values against breast cancer MCF-7 (IC50 = 0.92 ± 0.18 and 0.67 ± 0.12 µM, respectively) and HCC1937 (IC50 = 0.88 ± 0.52 and 0.53 ± 0.11 µM, respectively) cell lines. In addition, compounds 6f and 10d induced arrest in the G2/M phase of the cell cycle as compared to untreated cells. Finally, in silico studies, including docking and molecular dynamic simulations, were performed to justify the biological results.
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Affiliation(s)
- Mahmoud A El Hassab
- Department of Medicinal Chemistry, Faculty of Pharmacy, King Salman International University (KSIU), Ras Sudr, South Sinai, Egypt
| | - Amer Ali Abd El-Hafeez
- Cancer Biology Department, Pharmacology and Experimental Oncology Unit, National Cancer Institute, Cairo University, Cairo, Egypt
| | - Hadia Almahli
- Department of Chemistry, University of Cambridge, Cambridge, UK
| | - Zainab M Elsayed
- Scientific Research and Innovation Support Unit, Faculty of Pharmacy, Kafrelsheikh University, Kafrelsheikh, Egypt
| | - Wagdy M Eldehna
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Kafrelsheikh University, Kafrelsheikh, Egypt
- School of Biotechnology, Badr University in Cairo, Badr City, Egypt
| | - Ghaneya S Hassan
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, Cairo University, Cairo, Egypt
- Pharmaceutical Chemistry Department, School of Pharmacy, Badr University in Cairo (BUC), Badr City, Egypt
| | - Sahar M Abou-Seri
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, Cairo University, Cairo, Egypt
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Gomatam A, Hirlekar BU, Singh KD, Murty US, Dixit VA. Improved QSAR models for PARP-1 inhibition using data balancing, interpretable machine learning, and matched molecular pair analysis. Mol Divers 2024:10.1007/s11030-024-10809-9. [PMID: 38374474 DOI: 10.1007/s11030-024-10809-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Accepted: 01/07/2024] [Indexed: 02/21/2024]
Abstract
The poly (ADP-ribose) polymerase-1 (PARP-1) enzyme is an important target in the treatment of breast cancer. Currently, treatment options include the drugs Olaparib, Niraparib, Rucaparib, and Talazoparib; however, these drugs can cause severe side effects including hematological toxicity and cardiotoxicity. Although in silico models for the prediction of PARP-1 activity have been developed, the drawbacks of these models include low specificity, a narrow applicability domain, and a lack of interpretability. To address these issues, a comprehensive machine learning (ML)-based quantitative structure-activity relationship (QSAR) approach for the informed prediction of PARP-1 activity is presented. Classification models built using the Synthetic Minority Oversampling Technique (SMOTE) for data balancing gave robust and predictive models based on the K-nearest neighbor algorithm (accuracy 0.86, sensitivity 0.88, specificity 0.80). Regression models were built on structurally congeneric datasets, with the models for the phthalazinone class and fused cyclic compounds giving the best performance. In accordance with the Organization for Economic Cooperation and Development (OECD) guidelines, a mechanistic interpretation is proposed using the Shapley Additive Explanations (SHAP) to identify the important topological features to differentiate between PARP-1 actives and inactives. Moreover, an analysis of the PARP-1 dataset revealed the prevalence of activity cliffs, which possibly negatively impacts the model's predictive performance. Finally, a set of chemical transformation rules were extracted using the matched molecular pair analysis (MMPA) which provided mechanistic insights and can guide medicinal chemists in the design of novel PARP-1 inhibitors.
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Affiliation(s)
- Anish Gomatam
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research, (NIPER Guwahati), Department of Pharmaceuticals, Ministry of Chemicals and Fertilizers, Govt. of India, Sila Katamur (Halugurisuk), Dist: Kamrup, P.O.: Changsari, Guwahati, Assam, 781101, India
| | - Bhakti Umesh Hirlekar
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research, (NIPER Guwahati), Department of Pharmaceuticals, Ministry of Chemicals and Fertilizers, Govt. of India, Sila Katamur (Halugurisuk), Dist: Kamrup, P.O.: Changsari, Guwahati, Assam, 781101, India
| | - Krishan Dev Singh
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research, (NIPER Guwahati), Department of Pharmaceuticals, Ministry of Chemicals and Fertilizers, Govt. of India, Sila Katamur (Halugurisuk), Dist: Kamrup, P.O.: Changsari, Guwahati, Assam, 781101, India
| | - Upadhyayula Suryanarayana Murty
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research, (NIPER Guwahati), Department of Pharmaceuticals, Ministry of Chemicals and Fertilizers, Govt. of India, Sila Katamur (Halugurisuk), Dist: Kamrup, P.O.: Changsari, Guwahati, Assam, 781101, India
| | - Vaibhav A Dixit
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research, (NIPER Guwahati), Department of Pharmaceuticals, Ministry of Chemicals and Fertilizers, Govt. of India, Sila Katamur (Halugurisuk), Dist: Kamrup, P.O.: Changsari, Guwahati, Assam, 781101, India.
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10
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Yi JC, Yang ZY, Zhao WT, Yang ZJ, Zhang XC, Wu CK, Lu AP, Cao DS. ChemMORT: an automatic ADMET optimization platform using deep learning and multi-objective particle swarm optimization. Brief Bioinform 2024; 25:bbae008. [PMID: 38385872 PMCID: PMC10883642 DOI: 10.1093/bib/bbae008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Revised: 12/17/2023] [Accepted: 01/02/2024] [Indexed: 02/23/2024] Open
Abstract
Drug discovery and development constitute a laborious and costly undertaking. The success of a drug hinges not only good efficacy but also acceptable absorption, distribution, metabolism, elimination, and toxicity (ADMET) properties. Overall, up to 50% of drug development failures have been contributed from undesirable ADMET profiles. As a multiple parameter objective, the optimization of the ADMET properties is extremely challenging owing to the vast chemical space and limited human expert knowledge. In this study, a freely available platform called Chemical Molecular Optimization, Representation and Translation (ChemMORT) is developed for the optimization of multiple ADMET endpoints without the loss of potency (https://cadd.nscc-tj.cn/deploy/chemmort/). ChemMORT contains three modules: Simplified Molecular Input Line Entry System (SMILES) Encoder, Descriptor Decoder and Molecular Optimizer. The SMILES Encoder can generate the molecular representation with a 512-dimensional vector, and the Descriptor Decoder is able to translate the above representation to the corresponding molecular structure with high accuracy. Based on reversible molecular representation and particle swarm optimization strategy, the Molecular Optimizer can be used to effectively optimize undesirable ADMET properties without the loss of bioactivity, which essentially accomplishes the design of inverse QSAR. The constrained multi-objective optimization of the poly (ADP-ribose) polymerase-1 inhibitor is provided as the case to explore the utility of ChemMORT.
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Affiliation(s)
- Jia-Cai Yi
- School of Computer Science, National University of Defense Technology, Changsha 410073, Hunan, PR China
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, Hunan, P. R. China
| | - Zi-Yi Yang
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, Hunan, P. R. China
| | - Wen-Tao Zhao
- School of Computer Science, National University of Defense Technology, Changsha 410073, Hunan, PR China
| | - Zhi-Jiang Yang
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, Hunan, P. R. China
| | - Xiao-Chen Zhang
- School of Computer Science, National University of Defense Technology, Changsha 410073, Hunan, PR China
| | - Cheng-Kun Wu
- State Key Laboratory of High-Performance Computing, Changsha 410073, Hunan, PR China
| | - Ai-Ping Lu
- Institute for Advancing Translational Medicine in Bone and Joint Diseases, School of Chinese Medicine, Hong Kong Baptist University, Hong Kong SAR, P. R. China
| | - Dong-Sheng Cao
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, Hunan, P. R. China
- Institute for Advancing Translational Medicine in Bone and Joint Diseases, School of Chinese Medicine, Hong Kong Baptist University, Hong Kong SAR, P. R. China
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11
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Wang Q, Zhang M, Li A, Yao X, Chen Y. Unraveling the allosteric inhibition mechanism of PARP-1 CAT and the D766/770A mutation effects via Gaussian accelerated molecular dynamics and Markov state model. Comput Biol Med 2024; 168:107682. [PMID: 38000246 DOI: 10.1016/j.compbiomed.2023.107682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2023] [Revised: 10/03/2023] [Accepted: 11/06/2023] [Indexed: 11/26/2023]
Abstract
PARP-1 (Poly (ADP-ribose) polymerase 1) is a nuclear enzyme and plays a key role in many cellular functions, such as DNA repair, modulation of chromatin structure, and recombination. Developing the PARP-1 inhibitors has emerged as an effective therapeutic strategy for a growing list of cancers. The catalytic structural domain (CAT) of PARP-1 upon binding the inhibitor allosterically regulates the conformational changes of helix domain (HD), affecting its identification with the damaged DNA. The typical type I (EB47) and III (veliparib) inhibitors were able to lengthening or shortening the retention time of this enzyme on DNA damage and thus regulating the cytotoxicity. Nonetheless, the basis underlying allosteric inhibition is unclear, which limits the development of novel PARP-1 inhibitors. Here, to investigate the distinct allosteric changes of EB47 and veliparib against PARP-1 CAT, each complex was simulated via classical and Gaussian accelerated molecular dynamics (cMD and GaMD). To study the reverse allosteric basis and mutation effects, the complexes PARP-1 with UKTT15 and PARP-1 D766/770A mutant with EB47 were also simulated. Importantly, the markov state models were built to identify the transition pathways of crucial substates of allosteric communication and the induction basis of PARP-1 reverse allostery. The conformational change differences of PARP-1 CAT regulated by allosteric inhibitors were concerned with to their interaction at the active site. Energy calculations suggested the energy advantage of EB47 in inhibiting the wild-type PARP-1, compared with D766/770A PARP-1. Secondary structure results showed the change of two key loops (αB-αD and αE-αF) in different systems. This work reported the basis of PARP-1 allostery from both thermodynamic and kinetic views, providing the guidance for the discovery and design of more innovative PARP-1 allosteric inhibitors.
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Affiliation(s)
- Qianqian Wang
- Chronic Disease Research Center, Medical College, Dalian University, Dalian, 116622, China.
| | - Mingyu Zhang
- Chronic Disease Research Center, Medical College, Dalian University, Dalian, 116622, China
| | - Aohan Li
- Chronic Disease Research Center, Medical College, Dalian University, Dalian, 116622, China
| | - Xiaojun Yao
- Centre for Artificial Intelligence Driven Drug Discovery, Faculty of Applied Sciences, Macao Polytechnic University, Macao, 999078, China
| | - Yingqing Chen
- Chronic Disease Research Center, Medical College, Dalian University, Dalian, 116622, China.
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12
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Zheng X, Song X, Zhu G, Pan D, Li H, Hu J, Xiao K, Gong Q, Gu Z, Luo K, Li W. Nanomedicine Combats Drug Resistance in Lung Cancer. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2308977. [PMID: 37968865 DOI: 10.1002/adma.202308977] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2023] [Revised: 11/03/2023] [Indexed: 11/17/2023]
Abstract
Lung cancer is the second most prevalent cancer and the leading cause of cancer-related death worldwide. Surgery, chemotherapy, molecular targeted therapy, immunotherapy, and radiotherapy are currently available as treatment methods. However, drug resistance is a significant factor in the failure of lung cancer treatments. Novel therapeutics have been exploited to address complicated resistance mechanisms of lung cancer and the advancement of nanomedicine is extremely promising in terms of overcoming drug resistance. Nanomedicine equipped with multifunctional and tunable physiochemical properties in alignment with tumor genetic profiles can achieve precise, safe, and effective treatment while minimizing or eradicating drug resistance in cancer. Here, this work reviews the discovered resistance mechanisms for lung cancer chemotherapy, molecular targeted therapy, immunotherapy, and radiotherapy, and outlines novel strategies for the development of nanomedicine against drug resistance. This work focuses on engineering design, customized delivery, current challenges, and clinical translation of nanomedicine in the application of resistant lung cancer.
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Affiliation(s)
- Xiuli Zheng
- Department of Radiology, Department of Respiratory, Huaxi MR Research Center (HMRRC) and Critical Care Medicine, Institute of Respiratory Health, Precision Medicine Center, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, No. 37 Guoxue Alley, Chengdu, 610041, China
| | - Xiaohai Song
- Department of General Surgery, Gastric Cancer Center and Laboratory of Gastric Cancer, West China Hospital, Sichuan University, No. 37 Guoxue Alley, Chengdu, 610041, China
| | - Guonian Zhu
- Department of Radiology, Department of Respiratory, Huaxi MR Research Center (HMRRC) and Critical Care Medicine, Institute of Respiratory Health, Precision Medicine Center, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, No. 37 Guoxue Alley, Chengdu, 610041, China
| | - Dayi Pan
- Department of Radiology, Department of Respiratory, Huaxi MR Research Center (HMRRC) and Critical Care Medicine, Institute of Respiratory Health, Precision Medicine Center, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, No. 37 Guoxue Alley, Chengdu, 610041, China
| | - Haonan Li
- Department of Radiology, Department of Respiratory, Huaxi MR Research Center (HMRRC) and Critical Care Medicine, Institute of Respiratory Health, Precision Medicine Center, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, No. 37 Guoxue Alley, Chengdu, 610041, China
| | - Jiankun Hu
- Department of General Surgery, Gastric Cancer Center and Laboratory of Gastric Cancer, West China Hospital, Sichuan University, No. 37 Guoxue Alley, Chengdu, 610041, China
| | - Kai Xiao
- Department of Radiology, Department of Respiratory, Huaxi MR Research Center (HMRRC) and Critical Care Medicine, Institute of Respiratory Health, Precision Medicine Center, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, No. 37 Guoxue Alley, Chengdu, 610041, China
| | - Qiyong Gong
- Department of Radiology, Department of Respiratory, Huaxi MR Research Center (HMRRC) and Critical Care Medicine, Institute of Respiratory Health, Precision Medicine Center, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, No. 37 Guoxue Alley, Chengdu, 610041, China
- Precision Medicine Key Laboratory of Sichuan Province, Functional and Molecular Imaging Key Laboratory of Sichuan Province, and Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu, 610041, China
- Department of Radiology, West China Xiamen Hospital of Sichuan University, Xiamen, Fujian, 361000, China
| | - Zhongwei Gu
- Department of Radiology, Department of Respiratory, Huaxi MR Research Center (HMRRC) and Critical Care Medicine, Institute of Respiratory Health, Precision Medicine Center, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, No. 37 Guoxue Alley, Chengdu, 610041, China
| | - Kui Luo
- Department of Radiology, Department of Respiratory, Huaxi MR Research Center (HMRRC) and Critical Care Medicine, Institute of Respiratory Health, Precision Medicine Center, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, No. 37 Guoxue Alley, Chengdu, 610041, China
- Precision Medicine Key Laboratory of Sichuan Province, Functional and Molecular Imaging Key Laboratory of Sichuan Province, and Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu, 610041, China
| | - Weimin Li
- Department of Radiology, Department of Respiratory, Huaxi MR Research Center (HMRRC) and Critical Care Medicine, Institute of Respiratory Health, Precision Medicine Center, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, No. 37 Guoxue Alley, Chengdu, 610041, China
- Precision Medicine Key Laboratory of Sichuan Province, Functional and Molecular Imaging Key Laboratory of Sichuan Province, and Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu, 610041, China
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13
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Yu L, Li JH, Zhu J, Wang YD, Yan ZW, Zhang LY, Li S. Discovery of novel 2,3,4,5-tetrahydrospiro[benzo[c]azepine-1,1'-cyclohexan]-5-ol derivatives as PARP-1 inhibitors. BMC Chem 2023; 17:147. [PMID: 37891641 PMCID: PMC10612255 DOI: 10.1186/s13065-023-01060-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Accepted: 10/17/2023] [Indexed: 10/29/2023] Open
Abstract
As an essential marker of cancer treatment, PARP-1 inhibitors could effectively kill tumor cells through a mechanism known as synthetic lethality and are used to treat a variety of cancers. In order to explore novel PARP-1 inhibitors, a series of 22 novel erythrina derivatives were reported and preliminarily explored their mechanism of action. The antitumor activities against four human cancer cell lines including A549, OVCAR-3, HCT-116, and MCF-7 were evaluated, and the preliminary SARs were summarized. Among them, compound 11b exhibited better anti-proliferative effects against A549 cells (IC50 = 1.95 µM). The SI results showed that compound 11b had low toxicity. Moreover, compound 11b displayed excellent PARP-1 inhibitory activities with IC50 values of 19.24 nM. In addition, molecular docking studies provided the rational binding modes of compound 11b in complexes with PARP-1. The flow cytometry assays revealed that compound 11b could induce apoptosis of A549 cells (P < 0.001). Simultaneously, compound 11b could effectively reduce the formation of PAR (P < 0.001). The ADMET prediction results indicated compound 11b had similar properties to rucaparib. Collectively, compound 11b has potential research value for further investigation.
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Affiliation(s)
- Ling Yu
- Department of Pharmacy, Anorectal Hospital of Chengde Medical University, Chengde, 067000, P. R. China
| | - Jian-Hui Li
- Department of Preventive Medicine, Chengde Medical University, Chengde, 067000, P. R. China
| | - Ju Zhu
- School of Pharmacy, China Medical University, 77 Puhe Road, North New Area, Shenyang, 110122, China
| | - You-de Wang
- Key Laboratory of Traditional Chinese Medicine Research and Development of Hebei Province, Hebei Key Laboratory of Nerve Injury and Repair, Institute of Traditional Chinese Medicine, Chengde Medical University, Anyuan Road, Chengde, 067000, P. R. China
| | - Zhi-Wei Yan
- Key Laboratory of Traditional Chinese Medicine Research and Development of Hebei Province, Hebei Key Laboratory of Nerve Injury and Repair, Institute of Traditional Chinese Medicine, Chengde Medical University, Anyuan Road, Chengde, 067000, P. R. China
| | - Li-Ying Zhang
- Key Laboratory of Traditional Chinese Medicine Research and Development of Hebei Province, Hebei Key Laboratory of Nerve Injury and Repair, Institute of Traditional Chinese Medicine, Chengde Medical University, Anyuan Road, Chengde, 067000, P. R. China
| | - Shuai Li
- Key Laboratory of Traditional Chinese Medicine Research and Development of Hebei Province, Hebei Key Laboratory of Nerve Injury and Repair, Institute of Traditional Chinese Medicine, Chengde Medical University, Anyuan Road, Chengde, 067000, P. R. China.
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14
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Zhou J, Du T, Wang X, Yao H, Deng J, Li Y, Chen X, Sheng L, Ji M, Xu B. Discovery of Quinazoline-2,4(1 H,3 H)-dione Derivatives Containing a Piperizinone Moiety as Potent PARP-1/2 Inhibitors─Design, Synthesis, In Vivo Antitumor Activity, and X-ray Crystal Structure Analysis. J Med Chem 2023; 66:14095-14115. [PMID: 37843892 DOI: 10.1021/acs.jmedchem.3c01152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2023]
Abstract
PARP-1/2 inhibitors have become an important therapeutic strategy for the treatment of HR-deficient tumors. However, discovery of new inhibitors with an improved and distinct pharmacological file still need enormous explorations. Herein, a series of novel highly potent PARP-1/2 inhibitors bearing an N-substituted piperazinone moiety were achieved. In particular, Cpd36 was identified as a distinct PARP inhibitor, showing remarkable enzymatic activity not only toward PARP-1 (IC50 = 0.94 nM) and PARP-2 (IC50 = 0.87 nM) but also toward PARP-7 (IC50 = 0.21 nM), as well as high selectivity over other PARP isoforms. Furthermore, Cpd36 was orally bioavailable and significantly repressed the tumor growth in both breast cancer and prostate cancer xenograft model. The crystal structures of Cpd36 within PARP-1 and PARP-2 together with the predicted binding mode within PARP-7 revealed its binding features and provided insightful information for further developing highly potent and selective PARP-1 and/or PARP-7 inhibitors.
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Affiliation(s)
- Jie Zhou
- Beijing Key Laboratory of Active Substances Discovery and Druggability Evaluation, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Tingting Du
- Department of Pharmacology, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Xiaoyu Wang
- Beijing Key Laboratory of Active Substances Discovery and Druggability Evaluation, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Haiping Yao
- Beijing Key Laboratory of Active Substances Discovery and Druggability Evaluation, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Jialing Deng
- Department of Pharmacology, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Yan Li
- Beijing Key Laboratory of Non-Clinical Drug Metabolism and PK/PD Study, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Xiaoguang Chen
- Department of Pharmacology, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Li Sheng
- Beijing Key Laboratory of Non-Clinical Drug Metabolism and PK/PD Study, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Ming Ji
- Department of Pharmacology, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Bailing Xu
- Beijing Key Laboratory of Active Substances Discovery and Druggability Evaluation, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
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15
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Zhang DY, Zhu Y, Wu Q, Ma S, Ma Y, Shen ZC, Wang Z, Sun W, Zhou YC, Wang D, Zhou S, Liu Z, Kwong LN, Lu Z. USP1 promotes cholangiocarcinoma progression by deubiquitinating PARP1 to prevent its proteasomal degradation. Cell Death Dis 2023; 14:669. [PMID: 37821462 PMCID: PMC10567853 DOI: 10.1038/s41419-023-06172-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2023] [Revised: 09/14/2023] [Accepted: 09/21/2023] [Indexed: 10/13/2023]
Abstract
Despite its involvement in various cancers, the function of the deubiquitinase USP1 (ubiquitin-specific protease 1) is unexplored in cholangiocarcinoma (CCA). In this study, we provide evidence that USP1 promotes CCA progression through the stabilization of Poly (ADP-ribose) polymerase 1 (PARP1), consistent with the observation that both USP1 and PARP1 are upregulated in human CCA. Proteomics and ubiquitylome analysis of USP1-overexpressing CCA cells nominated PARP1 as a top USP1 substrate. Indeed, their direct interaction was validated by a series of immunofluorescence, co-immunoprecipitation (CO-IP), and GST pull-down assays, and their interaction regions were identified using deletion mutants. Mechanistically, USP1 removes the ubiquitin chain at K197 of PARP1 to prevent its proteasomal degradation, with the consequent PARP1 stabilization being necessary and sufficient to promote the growth and metastasis of CCA in vitro and in vivo. Additionally, we identified the acetyltransferase GCN5 as acetylating USP1 at K130, enhancing the affinity between USP1 and PARP1 and further increasing PARP1 protein stabilization. Finally, both USP1 and PARP1 are significantly associated with poor survival in CCA patients. These findings describe PARP1 as a novel deubiquitination target of USP1 and a potential therapeutic target for CCA.
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Affiliation(s)
- Deng Yong Zhang
- Department of General Surgery, The First Affiliated Hospital of Bengbu Medical College, Bengbu, 233000, Anhui, China
- Department of Translational Molecular Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
- Anhui Medical university, Hefei, 230000, Anhui, China
| | - Yan Zhu
- Department of Translational Molecular Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
- Cancer Biology Program, The University of Texas MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, Houston, TX, 77030, USA
| | - Qiong Wu
- Department of pathology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, 233000, Anhui, China
| | - Shuoshuo Ma
- Department of General Surgery, The First Affiliated Hospital of Bengbu Medical College, Bengbu, 233000, Anhui, China
- Department of pharmacy, Bengbu Medical College, No.2600 Donghai Road, Bengbu, 233000, Anhui, China
| | - Yang Ma
- Department of General Surgery, The First Affiliated Hospital of Bengbu Medical College, Bengbu, 233000, Anhui, China
| | - Zheng Chao Shen
- Department of General Surgery, The First Affiliated Hospital of Wannan Medical College, Wuhu, 241001, Anhui, China
| | - Zhonglin Wang
- Social Science Research Institute, Duke University, Durham, NC, 27708, USA
| | - Wanliang Sun
- Department of General Surgery, The First Affiliated Hospital of Bengbu Medical College, Bengbu, 233000, Anhui, China
| | - Yong Chun Zhou
- Department of Radiotherapy, The First Affiliated Hospital of Bengbu Medical College, Anhui, China
| | - Dongdong Wang
- Department of General Surgery, The First Affiliated Hospital of Bengbu Medical College, Bengbu, 233000, Anhui, China
| | - Shuo Zhou
- Department of General Surgery, The First Affiliated Hospital of Bengbu Medical College, Bengbu, 233000, Anhui, China
| | - Zhong Liu
- Department of General Surgery, The First Affiliated Hospital of Bengbu Medical College, Bengbu, 233000, Anhui, China
| | - Lawrence N Kwong
- Department of Translational Molecular Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA.
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA.
| | - Zheng Lu
- Department of General Surgery, The First Affiliated Hospital of Bengbu Medical College, Bengbu, 233000, Anhui, China.
- Anhui Medical university, Hefei, 230000, Anhui, China.
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16
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Gong R, Ma Z, He L, Jiang S, Cao D, Cheng Y. Identification and evaluation of a novel PARP1 inhibitor for the treatment of triple-negative breast cancer. Chem Biol Interact 2023; 382:110567. [PMID: 37271214 DOI: 10.1016/j.cbi.2023.110567] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 05/20/2023] [Accepted: 05/24/2023] [Indexed: 06/06/2023]
Abstract
Triple-negative breast cancer (TNBC) is a particularly invasive subtype of breast cancer and usually has a poor prognosis due to the lack of effective therapeutic targets. Approximately 25% of TNBC patients carry a breast cancer susceptibility gene1/2 (BRCA1/2) mutation. Clinically, PARP1 inhibitors have been approved for the treatment of patients with BRCA1/2-mutated breast cancer through the mechanism of synthetic lethality. In this study, we identified compound 6 {systematic name: 2-[2-(4-Hydroxy-phenyl)-vinyl]-3H-quinazolin-4-one} as a novel PARP1 inhibitor from established virtual screening methods. Compound 6 exerted stronger PARP1 inhibitory activity and anti-cancer activity as compared to olaparib in BRCA1-mutated TNBC cells and TNBC patient-derived organoids. Unexpectedly, we found that compound 6 also significantly inhibited cell viability, proliferation, and induced cell apoptosis in BRCA wild-type TNBC cells. To further elucidate the underlying molecular mechanism, we found that tankyrase (TNKS), a vital promoter of homologous-recombination repair, was a potential target of compound 6 by cheminformatics analysis. Compound 6 not only decreased the expression of PAR, but also down-regulated the expression of TNKS, thus resulting in significant DNA single-strand and double-strand breaks in BRCA wild-type TNBC cells. In addition, we demonstrated that compound 6 enhanced the sensitivity of BRCA1-mutated and wild-type TNBC cells to chemotherapy including paclitaxel and cisplatin. Collectively, our study identified a novel PARP1 inhibitor, providing a therapeutic candidate for the treatment of TNBC.
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Affiliation(s)
- Rong Gong
- Department of Pharmacy, The Second Xiangya Hospital, Central South University, Changsha, China; Hunan Provincial Engineering Research Centre of Translational Medicine and Innovative Drug, Changsha, China
| | - ZhongYe Ma
- Department of Pharmacy, The Second Xiangya Hospital, Central South University, Changsha, China; Hunan Provincial Engineering Research Centre of Translational Medicine and Innovative Drug, Changsha, China
| | - LinHao He
- Department of Pharmacy, The Second Xiangya Hospital, Central South University, Changsha, China; Hunan Provincial Engineering Research Centre of Translational Medicine and Innovative Drug, Changsha, China
| | - ShiLong Jiang
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha, China
| | - DongSheng Cao
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, China.
| | - Yan Cheng
- Department of Pharmacy, The Second Xiangya Hospital, Central South University, Changsha, China; Hunan Provincial Engineering Research Centre of Translational Medicine and Innovative Drug, Changsha, China.
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Stojanovic P, Luger K, Rudolph J. Slow Dissociation from the PARP1-HPF1 Complex Drives Inhibitor Potency. Biochemistry 2023; 62:2382-2390. [PMID: 37531469 PMCID: PMC10433523 DOI: 10.1021/acs.biochem.3c00243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 07/13/2023] [Indexed: 08/04/2023]
Abstract
PARP1, upon binding to damaged DNA, is activated to perform poly ADP-ribosylation (PARylation) on itself and other proteins, which leads to relaxation of chromatin and recruitment of DNA repair factors. HPF1 was recently discovered as a protein cofactor of PARP1 that directs preferential PARylation of histones over other targets by contributing to and altering the PARP1 active site. Inhibitors of PARP1 (PARPi) are used in the treatment of BRCA-/- cancers, but the basis for their potency in cells, especially in the context of HPF1, is not fully understood. Here, we demonstrate the simple one-step association for eight different PARPi to PARP1 with measured rates of association (kon) of 0.8-6 μM-1 s-1. We find only minor differences in these on rates when comparing PARP1 with the PARP1-HPF1 complex. By characterizing the rates of dissociation (koff) and the binding constants (KD) for two more recently discovered PARPi, we find, for example, that saruparib has a half-life for dissociation of 22.5 h and fluzoparib has higher affinity for PARP1 in the presence of HPF1, just like the structurally related compound olaparib. By using the measured KD and kon to calculate koff, we find that the potency of PARPi in cells correlates best with the koff from the PARP1-HPF1 complex. Our data suggest that dissociation of a drug compound from the PARP1-HPF1 complex should be the parameter of choice for guiding the development of next-generation PARPi.
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Affiliation(s)
- Petra Stojanovic
- Department
of Biochemistry, University of Colorado
Boulder, Boulder, Colorado 80309, United States
| | - Karolin Luger
- Department
of Biochemistry, University of Colorado
Boulder, Boulder, Colorado 80309, United States
- Howard
Hughes Medical Institute, University of
Colorado Boulder, Boulder, Colorado 80309, United States
| | - Johannes Rudolph
- Department
of Biochemistry, University of Colorado
Boulder, Boulder, Colorado 80309, United States
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18
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Wang X, Liu W, Li K, Chen K, He S, Zhang J, Gu B, Xu X, Song S. PET imaging of PARP expression using 68Ga-labelled inhibitors. Eur J Nucl Med Mol Imaging 2023; 50:2606-2620. [PMID: 37145164 PMCID: PMC10317875 DOI: 10.1007/s00259-023-06249-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Accepted: 04/24/2023] [Indexed: 05/06/2023]
Abstract
PURPOSE Imaging the PARP expression using 18F probes has been approved in clinical trials. Nevertheless, hepatobiliary clearance of both 18F probes hindered their application in monitoring abdominal lesions. Our novel 68Ga-labelled probes aim for fewer abdominal signals while ensuring PARP targeting by optimizing the pharmacokinetic properties of radioactive probes. METHODS Three radioactive probes targeted PARP were designed, synthesized, and evaluated based on the PARP inhibitor Olaparib. These 68Ga-labelled radiotracers were assessed in vitro and in vivo. RESULTS Precursors that did not lose binding affinity for PARP were designed, synthesized, and then labelled with 68Ga in high radiochemical purity (> 97%). The 68Ga-labelled radiotracers were stable. Due to the increased expression of PARP-1 in SK-OV-3 cells, the uptake of the three radiotracers by SK-OV-3 cells was significantly greater than that by A549 cells. PET/CT imaging of the SK-OV-3 models indicated that the tumor uptake of 68Ga-DOTA-Olaparib (0.5 h: 2.83 ± 0.55%ID/g; 1 h: 2.37 ± 0.64%ID/g) was significantly higher than that of the other 68Ga-labelled radiotracers. There was a significant difference in the T/M (tumor-to-muscle) ratios between the unblocked and blocked groups as calculated from the PET/CT images (4.07 ± 1.01 vs. 1.79 ± 0.45, P = 0.0238 < 0.05). Tumor autoradiography revealed high accumulation in tumor tissues, further confirming the above data. PARP-1 expression in the tumor was confirmed by immunochemistry. CONCLUSION As the first 68Ga-labelled PARP inhibitor, 68Ga-DOTA-Olaparib displayed high stability and quick PARP imaging in a tumor model. This compound is thus a promising imaging agent that can be used in a personalized PARP inhibitor treatment regimen.
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Affiliation(s)
- Xiangwei Wang
- Department of Nuclear Medicine, Fudan University Shanghai Cancer Center, Shanghai, 200032 China
- Shanghai Engineering Research Center of Molecular Imaging Probes, Shanghai, 200032 China
| | - Wei Liu
- Department of Nuclear Medicine, Fudan University Shanghai Cancer Center, Shanghai, 200032 China
- Shanghai Engineering Research Center of Molecular Imaging Probes, Shanghai, 200032 China
| | - Ke Li
- Department of Nuclear Medicine, Fudan University Shanghai Cancer Center, Shanghai, 200032 China
- Shanghai Engineering Research Center of Molecular Imaging Probes, Shanghai, 200032 China
| | - Kaiwen Chen
- College of Chemistry and Materials Science, Shanghai Normal University, Shanghai, China
| | - Simin He
- Department of Nuclear Medicine, Fudan University Shanghai Cancer Center, Shanghai, 200032 China
- Shanghai Engineering Research Center of Molecular Imaging Probes, Shanghai, 200032 China
| | - Jianping Zhang
- Department of Nuclear Medicine, Fudan University Shanghai Cancer Center, Shanghai, 200032 China
- Shanghai Engineering Research Center of Molecular Imaging Probes, Shanghai, 200032 China
| | - Bingxin Gu
- Department of Nuclear Medicine, Fudan University Shanghai Cancer Center, Shanghai, 200032 China
- Shanghai Engineering Research Center of Molecular Imaging Probes, Shanghai, 200032 China
| | - Xiaoping Xu
- Department of Nuclear Medicine, Fudan University Shanghai Cancer Center, Shanghai, 200032 China
- Shanghai Engineering Research Center of Molecular Imaging Probes, Shanghai, 200032 China
| | - Shaoli Song
- Department of Nuclear Medicine, Fudan University Shanghai Cancer Center, Shanghai, 200032 China
- Shanghai Engineering Research Center of Molecular Imaging Probes, Shanghai, 200032 China
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Rana M, Thakur A, Kaur C, Pan CH, Lee SB, Liou JP, Nepali K. Prudent tactics to sail the boat of PARP inhibitors as therapeutics for diverse malignancies. Expert Opin Drug Discov 2023; 18:1169-1193. [PMID: 37525475 DOI: 10.1080/17460441.2023.2241818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Accepted: 07/25/2023] [Indexed: 08/02/2023]
Abstract
INTRODUCTION PARP inhibitors block the DNA-repairing mechanism of PARP and represent a promising class of anti-cancer therapy. The last decade has witnessed FDA approvals of several PARP inhibitors, with some undergoing advanced-stage clinical investigation. Medicinal chemists have invested much effort to expand the structure pool of PARP inhibitors. Issues associated with the use of PARP inhibitors that make their standing disconcerting in the pharmaceutical sector have been addressed via the design of new structural assemblages. AREA COVERED In this review, the authors present a detailed account of the medicinal chemistry campaigns conducted in the recent past for the construction of PARP1/PARP2 inhibitors, PARP1 biased inhibitors, and PARP targeting bifunctional inhibitors as well as PARP targeting degraders (PROTACs). Limitations associated with FDA-approved PARP inhibitors and strategies to outwit the limitations are also discussed. EXPERT OPINION The PARP inhibitory field has been rejuvenated with numerous tractable entries in the last decade. With numerous magic bullets in hand coupled with unfolded tactics to outwit the notoriety of cancer cells developing resistance toward PARP inhibitors, the dominance of PARP inhibitors as a sagacious option of targeted therapy is highly likely to be witnessed soon.
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Affiliation(s)
- Mandeep Rana
- School of Pharmacy, College of Pharmacy, Taipei Medical University, Taipei, Taiwan
| | - Amandeep Thakur
- School of Pharmacy, College of Pharmacy, Taipei Medical University, Taipei, Taiwan
| | - Charanjit Kaur
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara, India
| | - Chun-Hsu Pan
- School of Pharmacy, College of Pharmacy, Taipei Medical University, Taipei, Taiwan
- Program in Drug Discovery and Development Industry, College of Pharmacy, Taipei Medical, University, Taipei, Taiwan
| | - Sung-Bau Lee
- Program in Drug Discovery and Development Industry, College of Pharmacy, Taipei Medical, University, Taipei, Taiwan
- Master Program in Clinical Genomics and Proteomics, College of Pharmacy, Taipei Medical University, Taipei, Taiwan
| | - Jing Ping Liou
- School of Pharmacy, College of Pharmacy, Taipei Medical University, Taipei, Taiwan
- Program in Drug Discovery and Development Industry, College of Pharmacy, Taipei Medical, University, Taipei, Taiwan
| | - Kunal Nepali
- School of Pharmacy, College of Pharmacy, Taipei Medical University, Taipei, Taiwan
- Program in Drug Discovery and Development Industry, College of Pharmacy, Taipei Medical, University, Taipei, Taiwan
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20
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Hirlekar BU, Nuthi A, Singh KD, Murty US, Dixit VA. An overview of compound properties, multiparameter optimization, and computational drug design methods for PARP-1 inhibitor drugs. Eur J Med Chem 2023; 252:115300. [PMID: 36989813 DOI: 10.1016/j.ejmech.2023.115300] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 03/14/2023] [Accepted: 03/17/2023] [Indexed: 03/29/2023]
Abstract
Breast cancer treatment with PARP-1 inhibitors remains challenging due to emerging toxicities, drug resistance, and unaffordable costs of treatment options. How do we invent strategies to design better anti-cancer drugs? A part of the answer is in optimized compound properties, desirability functions, and modern computational drug design methods that drive selectivity and toxicity and have not been reviewed for PARP-1 inhibitors. Nonetheless, comparisons of these compound properties for PARP-1 inhibitors are not available in the literature. In this review, we analyze the physchem, PKPD space to identify inherent desirability functions characteristic of approved drugs that can be valuable for the design of better candidates. Recent literature utilizing ligand, structure-based drug design strategies and matched molecular pair analysis (MMPA) for the discovery of novel PARP-1 inhibitors are also reviewed. Thus, this perspective provides valuable insights into the medchem and multiparameter optimization of PARP-1 inhibitors that might be useful to other medicinal chemists.
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21
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Discovery of novel benzamide derivatives bearing benzamidophenyl and phenylacetamidophenyl scaffolds as potential antitumor agents via targeting PARP-1. Eur J Med Chem 2023; 251:115243. [PMID: 36921527 DOI: 10.1016/j.ejmech.2023.115243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 02/17/2023] [Accepted: 02/27/2023] [Indexed: 03/06/2023]
Abstract
Poly(ADP-ribose) polymerase-1 (PARP-1) plays a crucial role in DNA damage repair and has been identified as a promising therapeutic target in cancer therapy. As a continuation of our efforts on the development of novel PARP-1 inhibitors with potent anticancer activity, a series of benzamide derivatives containing the benzamidophenyl and phenylacetamidophenyl scaffolds were designed and synthesized based on the structure optimization of our previously reported compound IX. All target compounds were screened for their in vitro antiproliferative activities against human colorectal cancer cells (HCT116, DLD-1 and SW480) and human normal colonic epithelial cells (NCM460). Among them, compound 13f exhibited the most potent anticancer activity against HCT116 cells and DLD-1 cells with IC50 = 0.30 μM and 2.83 μM, respectively. Moreover, 13f displayed significant selectivity in inhibiting HCT116 cancer cells over the normal NCM460 cells. Furthermore, 13f exhibited excellent PARP-1 inhibitory effect with IC50 = 0.25 nM. Besides, 13f was found to effectively inhibit colony formation and migration of HCT116 cells. Studies on the mechanisms revealed that 13f could arrest cell cycle at G2/M phase, accumulate DNA double-strand breaks, reduce mitochondrial membrane potential and ultimately induce apoptosis in HCT116 cells. In addition, molecular docking study indicated that 13f could combine firmly with the catalytic pocket of PARP-1 through multiple hydrogen bond interactions. Collectively, these findings demonstrated that 13f could serve as a promising anticancer candidate and deserves further investigation.
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22
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Lu G, Nie W, Xin M, Meng Y, Gu J, Miao H, Cheng X, Chan AS, Zou Y. Design, synthesis, biological evaluation and molecular docking study of novel urea-based benzamide derivatives as potent poly(ADP-ribose) polymerase-1 (PARP-1) inhibitors. Eur J Med Chem 2022; 243:114790. [DOI: 10.1016/j.ejmech.2022.114790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 09/13/2022] [Accepted: 09/18/2022] [Indexed: 11/03/2022]
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23
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Peng X, Pan W, Jiang F, Chen W, Qi Z, Peng W, Chen J. Selective PARP1 Inhibitors, PARP1-based Dual-Target Inhibitors, PROTAC PARP1 Degraders, and Prodrugs of PARP1 Inhibitors for Cancer Therapy. Pharmacol Res 2022; 186:106529. [DOI: 10.1016/j.phrs.2022.106529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 10/27/2022] [Accepted: 10/28/2022] [Indexed: 11/07/2022]
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24
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Liu X, Wei X, Li X, Yu R, Jiang T, Zhao C. Design, synthesis, and bioactivity study on Lissodendrins B derivatives as PARP1 inhibitor. Bioorg Med Chem 2022; 69:116892. [DOI: 10.1016/j.bmc.2022.116892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Revised: 06/16/2022] [Accepted: 06/16/2022] [Indexed: 11/25/2022]
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25
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Bai H, Xia S, Zhu L, Dong Y, Liu C, Li N, Liu H, Xiao J. Altered polymerase theta expression promotes chromosomal instability in salivary adenoid cystic carcinoma. J Cell Mol Med 2022; 26:3931-3949. [PMID: 35726713 PMCID: PMC9279586 DOI: 10.1111/jcmm.17429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 05/10/2022] [Accepted: 05/20/2022] [Indexed: 11/28/2022] Open
Abstract
Genomic instability (GIN) plays a key role in cancer progression. The disorders of polymerase theta (POLQ) were reported to contribute to GIN and progression in many cancers. Here, we found that POLQ over‐expression was related to salivary adenoid cystic carcinoma (SACC) progression and poor prognosis. Then, we investigated the role and mechanism of POLQ in the GIN in SACC. GIN was assessed by chromosome staining with DAPI and Giemsa, as well as qRT‐PCR of the mitosis‐related gene expression. Meanwhile, PCR‐SSCP was used to evaluate microsatellite instability. Modulation of POLQ expression increased chromosomal instability and enhanced the sensitivity to etoposide without impacting microsatellite stability. Mechanistically, POLQ regulated genome stability by promoting the expression of the error‐prone alt‐NHEJ‐related protein PARP1, and down‐regulating c‐NHEJ‐ and HR‐related proteins KU70 and RAD51. In vitro CCK, Transwell assays and in vivo murine xenograft models indicated that the PARP inhibitor olaparib suppressed SACC growth in the case of etoposide‐induced DNA damage. Bioinformatic analysis identified CEBPB as a potential POLQ‐regulating transcription factor. In summary, our research provides new insights into the mechanisms of SACC chromosomal instability and identifies new potential targets for SACC treatment.
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Affiliation(s)
- Han Bai
- College of Stomatology, Dalian Medical University, Dalian, China
| | - Shilin Xia
- Clinical Laboratory of Integrative Medicine, The First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Lei Zhu
- College of Stomatology, Dalian Medical University, Dalian, China
| | - Yan Dong
- College of Stomatology, Dalian Medical University, Dalian, China
| | - Chao Liu
- College of Stomatology, Dalian Medical University, Dalian, China
| | - Nan Li
- College of Stomatology, Dalian Medical University, Dalian, China.,Liaoning Province Key Laboratory of Organism Microecology and Disease Control, Dalian, China
| | - Han Liu
- College of Stomatology, Dalian Medical University, Dalian, China.,Liaoning Province Key Laboratory of Organism Microecology and Disease Control, Dalian, China
| | - Jing Xiao
- College of Stomatology, Dalian Medical University, Dalian, China.,Liaoning Province Key Laboratory of Organism Microecology and Disease Control, Dalian, China
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Recent advances in structural types and medicinal chemistry of PARP-1 inhibitors. Med Chem Res 2022. [DOI: 10.1007/s00044-022-02919-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Abstract
PARP is an important target in the treatment of cancers, particularly in patients with breast, ovarian, or prostate cancer that have compromised homologous recombination repair (i.e., BRCA−/−). This review about inhibitors of PARP (PARPi) is for readers interested in the development of next-generation drugs for the treatment of cancer, providing insights into structure–activity relationships, in vitro vs. in vivo potency, PARP trapping, and synthetic lethality. Selective inhibitors of PARP1 and PARP2 (PARP1/2) are used to treat cancer patients with deficiencies in the repair of DNA via homologous recombination. Here we provide a perspective on the reported potencies of the most studied of these inhibitors (olaparib, talazoparib, niraparib, rucaparib, and veliparib) in vitro and in vivo and how these numbers relate to the known structures of these inhibitors bound to the active sites of PARP1 and PARP2. We suggest that the phenomenon of PARP trapping is primarily due to the inhibition of the catalytic activity of PARP1 and that the basis for the higher potency of talazoparib compared to the other inhibitors lies in its more extensive network of interactions with conserved residues in the active site. We also consider the potential role of the recently characterized protein “Histone PARylation Factor 1” (HPF1), which interacts with PARP1/2 to form a shared active site, for the design of the next generation of inhibitors of PARP1/2.
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28
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Dual-target inhibitors based on PARP1: new trend in the development of anticancer research. Future Med Chem 2022; 14:511-525. [PMID: 35257598 DOI: 10.4155/fmc-2021-0292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
PARP1 is a hot target, and its inhibitors have been approved for cancer therapy. However, some undesirable properties restrict the application of PARP1 inhibitors, including drug resistance, side effects and low efficiency. For multifactorial diseases, dual-target drugs have exhibited excellent synergistic effects, such as reduced drug resistance, low side effects and high therapeutic efficacy, by simultaneously regulating the main pathogenic and compensatory signal pathways of diseases. In recent years, several dual-target inhibitors based on PARP1 have been reported and have demonstrated unique advantages. In this review we summarize the research progress in dual-target inhibitors based on PARP1 and discuss the related drug design strategies and structure-activity relationships. This work is expected to provide references for the development of PARP1 inhibitors.
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Wei L, Wang M, Wang Q, Han Z. Dual targeting, a new strategy for novel PARP inhibitor discovery. Drug Discov Ther 2022; 15:300-309. [PMID: 35034923 DOI: 10.5582/ddt.2021.01100] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
As a hallmark for cancer treatment, PARP inhibitors can effectively kill tumor cells with a mechanism termed as synthetic lethality, and are used to treat various cancers including ovarian, breast, prostate, pancreatic and others with DNA repair defects. However, along with the clinical trials progressing, the limitations of PARP-1 inhibitors became apparent such as limited activity and indications. Studies have shown that a molecule that is able to simultaneously restrict two or more targets involving in tumors is more effective in preventing and treating cancers due to the enhancing synergies. In order to make up for the shortcomings of PARP inhibitors, reduce the development cost and overcome the pharmacokinetic defects, multiple works were carried out to construct dual targeting PARP inhibitors for cancer therapy. Herein, they were summarized briefly.
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Affiliation(s)
- Lina Wei
- Department of Pharmacy, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Meizhi Wang
- Department of Pharmacy, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Qiaoyun Wang
- Department of Pharmacy, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Zhiwu Han
- Department of Pharmacy, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
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30
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Zhou J, Ji M, Wang X, Zhao H, Cao R, Jin J, Li Y, Chen X, Sheng L, Chen X, Xu B. Discovery of Quinazoline-2,4(1 H,3 H)-dione Derivatives Containing 3-Substituted Piperizines as Potent PARP-1/2 Inhibitors─Design, Synthesis, In Vivo Antitumor Activity, and X-ray Crystal Structure Analysis. J Med Chem 2021; 64:16711-16730. [PMID: 34748333 DOI: 10.1021/acs.jmedchem.1c01522] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Inhibiting PARP-1/2 offered an important arsenal for cancer treatments via interfering with DNA repair of cancer cells. Novel PARP-1/2 inhibitors were designed by capitalizing on methyl- or ethyl-substituted piperizine ring to capture the characteristics of adenine-ribose binding site (AD site), and their unique binding features were revealed by the cocrystal structures of compounds 4 and 6 in PARP-1. The investigation on structure-activity relationship resulted in compounds 24 and 32 with high enzymatic potency, binding selectivity, and significantly longer residence time for PARP-1 over PARP-2 (compound 24, PARP-1: IC50 = 0.51 nM, PARP-2: IC50 = 23.11 nM; compound 32, PARP-1: IC50 = 1.31 nM, PARP-2: IC50 = 15.63 nM). Furthermore, compound 24 was determined to be an attractive candidate molecule, which possessed an acceptable pharmacokinetic profile and produced remarkable antitumor activity in both breast cancer xenograft model and glioblastoma orthotopic model in mice, either alone or in combination treatment.
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Affiliation(s)
- Jie Zhou
- Beijing Key Laboratory of Active Substances Discovery and Druggability Evaluation, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Ming Ji
- Department of Pharmacology, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China.,State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Xiaoyu Wang
- Beijing Key Laboratory of Active Substances Discovery and Druggability Evaluation, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Hailong Zhao
- Beijing Key Laboratory of Active Substances Discovery and Druggability Evaluation, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Ran Cao
- Beijing Key Laboratory of Active Substances Discovery and Druggability Evaluation, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Jing Jin
- Department of Pharmacology, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China.,State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Yan Li
- Beijing Key Laboratory of Non-Clinical Drug Metabolism and PK/PD Study, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Xianhong Chen
- Beijing Key Laboratory of Non-Clinical Drug Metabolism and PK/PD Study, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China.,Beijing Collab Pharma Co., Ltd, Beijing 102600, China
| | - Li Sheng
- Beijing Key Laboratory of Non-Clinical Drug Metabolism and PK/PD Study, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Xiaoguang Chen
- Department of Pharmacology, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China.,State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Bailing Xu
- Beijing Key Laboratory of Active Substances Discovery and Druggability Evaluation, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
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New Hybrid Compounds Combining Fragments of Usnic Acid and Thioether Are Inhibitors of Human Enzymes TDP1, TDP2 and PARP1. Int J Mol Sci 2021; 22:ijms222111336. [PMID: 34768766 PMCID: PMC8583042 DOI: 10.3390/ijms222111336] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 10/16/2021] [Accepted: 10/17/2021] [Indexed: 01/27/2023] Open
Abstract
Tyrosyl-DNA phosphodiesterase 1 (TDP1) catalyzes the cleavage of the phosphodiester bond between the tyrosine residue of topoisomerase 1 (TOP1) and the 3' phosphate of DNA in the single-strand break generated by TOP1. TDP1 promotes the cleavage of the stable DNA-TOP1 complexes with the TOP1 inhibitor topotecan, which is a clinically used anticancer drug. This article reports the synthesis and study of usnic acid thioether and sulfoxide derivatives that efficiently suppress TDP1 activity, with IC50 values in the 1.4-25.2 μM range. The structure of the heterocyclic substituent introduced into the dibenzofuran core affects the TDP1 inhibitory efficiency of the compounds. A five-membered heterocyclic fragment was shown to be most pharmacophoric among the others. Sulfoxide derivatives were less cytotoxic than their thioester analogs. We observed an uncompetitive type of inhibition for the four most effective inhibitors of TDP1. The anticancer effect of TOP1 inhibitors can be enhanced by the simultaneous inhibition of PARP1, TDP1, and TDP2. Some of the compounds inhibited not only TDP1 but also TDP2 and/or PARP1, but at significantly higher concentration ranges than TDP1. Leader compound 10a showed promising synergy on HeLa cells in conjunction with the TOP1 inhibitor topotecan.
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32
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MCDB: A comprehensive curated mitotic catastrophe database for retrieval, protein sequence alignment, and target prediction. Acta Pharm Sin B 2021; 11:3092-3104. [PMID: 34729303 PMCID: PMC8546929 DOI: 10.1016/j.apsb.2021.05.032] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 03/12/2021] [Accepted: 05/06/2021] [Indexed: 02/05/2023] Open
Abstract
Mitotic catastrophe (MC) is a form of programmed cell death induced by mitotic process disorders, which is very important in tumor prevention, development, and drug resistance. Because rapidly increased data for MC is vigorously promoting the tumor-related biomedical and clinical study, it is urgent for us to develop a professional and comprehensive database to curate MC-related data. Mitotic Catastrophe Database (MCDB) consists of 1214 genes/proteins and 5014 compounds collected and organized from more than 8000 research articles. Also, MCDB defines the confidence level, classification criteria, and uniform naming rules for MC-related data, which greatly improves data reliability and retrieval convenience. Moreover, MCDB develops protein sequence alignment and target prediction functions. The former can be used to predict new potential MC-related genes and proteins, and the latter can facilitate the identification of potential target proteins of unknown MC-related compounds. In short, MCDB is such a proprietary, standard, and comprehensive database for MC-relate data that will facilitate the exploration of MC from chemists to biologists in the fields of medicinal chemistry, molecular biology, bioinformatics, oncology and so on. The MCDB is distributed on http://www.combio-lezhang.online/MCDB/index_html/.
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Key Words
- Data mining
- Database
- GO, Gene Ontology
- IUPAC, International Union of Pure and Applied Chemistry
- InChI Key, International Chemical Identifier hash
- InChI, International Chemical Identifier
- MC, Mitotic Catastrophe
- MCDB, Mitotic Catastrophe Database
- Mitotic catastrophe
- PDB, Protein Data Bank
- PMID, PubMed identifier
- Protein sequence analysis
- PubChem, Public Chemistry
- PubMed, Public Medicine
- SMILES, Simplified Molecular Input Line Entry Specification
- Target prediction
- UniProt, Universal Protein Resource
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Jiang Y, Meng XY, Deng NN, Meng C, Li LH, He ZK, Wang XY, Song ZY, Cui RJ. Effect and Safety of Therapeutic Regimens for Patients With Germline BRCA Mutation-Associated Breast Cancer: A Network Meta-Analysis. Front Oncol 2021; 11:718761. [PMID: 34490117 PMCID: PMC8417748 DOI: 10.3389/fonc.2021.718761] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Accepted: 08/05/2021] [Indexed: 01/15/2023] Open
Abstract
Purpose Breast cancer type 1 susceptibility (BRCA) mutations not only increase breast cancer (BC) risk but also result in poor survival and prognosis for BC patients. This study will analyze the effect and safety of therapeutic regimens for the treatment of BC patients with germline BRCA (gBRCA) mutations by network meta-analysis. Methods Public databases were searched from inception to 29 April 2021. Frequentist network meta-analysis was conducted to analyze the benefit of chemotherapy and targeted drug-related strategies. Results Seventeen articles were included in the analysis. For progression-free survival (PFS), olaparib (hazard ratio (HR): 0.58; 95% confidence interval (CI): 0.43 – 0.79), platinum (HR: 0.45; 95% CI: 0.22 – 0.89), and talazoparib (HR: 0.54; 95% CI: 0.41 – 0.71) were significantly better than platinum-free chemotherapy (Chemo). The results based on indirect comparisons showed that veliparib (Vel) + platinum + Chemo was also significantly better than Chemo (HR: 0.37; 95% CI: 0.20 – 0.69). For overall survival (OS), olaparib was significantly better than Chemo only in the population who did not receive prior chemotherapy. For pathologic complete response (pCR), bevacizumab+Chemo had a significant advantage over platinum agents (OR: 3.64; 95% CI: 1.07 - 12.39). Olaparib and talazoparib both showed significantly higher objective response rates (ORRs) than Chemo. Conclusion The PFS results suggested that olaparib, talazoparib, and Vel+platinum agent+Chemo were ideal regimens for overall, TNBC, and advanced BC patients with gBRCA mutations. Whether PARPis are suitable for patients with gBRCA mutations who have received prior platinum therapy still needs to be clarified.
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Affiliation(s)
- Ying Jiang
- Department of Biochemistry and Molecular Biology, Mudanjiang Medical University, Mudanjiang, China
| | - Xiang-Yu Meng
- Department of Biochemistry and Molecular Biology, Mudanjiang Medical University, Mudanjiang, China
| | - Ning-Ning Deng
- Department of Dermatological, Hongqi Hospital Affiliated to Mudanjiang Medical University, Mudanjiang, China
| | - Chen Meng
- Department of Nursing Youth League Committee, Mudanjiang Medical University, Mudanjiang, China
| | - Lu-Hui Li
- Department of Biochemistry and Molecular Biology, Mudanjiang Medical University, Mudanjiang, China
| | - Zi-Kang He
- Department of Biochemistry and Molecular Biology, Mudanjiang Medical University, Mudanjiang, China
| | - Xing-Yun Wang
- Department of Biochemistry and Molecular Biology, Mudanjiang Medical University, Mudanjiang, China
| | - Zhe-Yao Song
- Department of Biochemistry and Molecular Biology, Mudanjiang Medical University, Mudanjiang, China
| | - Rong-Jun Cui
- Department of Biochemistry and Molecular Biology, Mudanjiang Medical University, Mudanjiang, China
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Investigation of the Complexes Formed between PARP1 Inhibitors and PARP1 G-Quadruplex at the Gene Promoter Region. Int J Mol Sci 2021; 22:ijms22168737. [PMID: 34445442 PMCID: PMC8395737 DOI: 10.3390/ijms22168737] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 08/06/2021] [Accepted: 08/12/2021] [Indexed: 11/23/2022] Open
Abstract
DNA repair inhibitors are one of the latest additions to cancer chemotherapy. In general, chemotherapy produces DNA damage but tumoral cells may become resistant if enzymes involved in DNA repair are overexpressed and are able to reverse DNA damage. One of the most successful drugs based on modulating DNA repair are the poly(ADP-ribose) polymerase 1 (PARP1) inhibitors. Several PARP1 inhibitors have been recently developed and approved for clinical treatments. We envisaged that PARP inhibition could be potentiated by simultaneously modulating the expression of PARP 1 and the enzyme activity, by a two-pronged strategy. A noncanonical G-quadruplex-forming sequence within the PARP1 promoter has been recently identified. In this study, we explored the potential binding of clinically approved PARP1 inhibitors to the G-quadruplex structure found at the gene promoter region. The results obtained by NMR, CD, and fluorescence titration confirmed by molecular modeling demonstrated that two out the four PARP1 inhibitors studied are capable of forming defined complexes with the PARP1 G-quadruplex. These results open the possibility of exploring the development of better G-quadruplex binders that, in turn, may also inhibit the enzyme.
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Xiong G, Wu Z, Yi J, Fu L, Yang Z, Hsieh C, Yin M, Zeng X, Wu C, Lu A, Chen X, Hou T, Cao D. ADMETlab 2.0: an integrated online platform for accurate and comprehensive predictions of ADMET properties. Nucleic Acids Res 2021; 49:W5-W14. [PMID: 33893803 PMCID: PMC8262709 DOI: 10.1093/nar/gkab255] [Citation(s) in RCA: 835] [Impact Index Per Article: 278.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Revised: 03/20/2021] [Accepted: 03/30/2021] [Indexed: 02/06/2023] Open
Abstract
Because undesirable pharmacokinetics and toxicity of candidate compounds are the main reasons for the failure of drug development, it has been widely recognized that absorption, distribution, metabolism, excretion and toxicity (ADMET) should be evaluated as early as possible. In silico ADMET evaluation models have been developed as an additional tool to assist medicinal chemists in the design and optimization of leads. Here, we announced the release of ADMETlab 2.0, a completely redesigned version of the widely used AMDETlab web server for the predictions of pharmacokinetics and toxicity properties of chemicals, of which the supported ADMET-related endpoints are approximately twice the number of the endpoints in the previous version, including 17 physicochemical properties, 13 medicinal chemistry properties, 23 ADME properties, 27 toxicity endpoints and 8 toxicophore rules (751 substructures). A multi-task graph attention framework was employed to develop the robust and accurate models in ADMETlab 2.0. The batch computation module was provided in response to numerous requests from users, and the representation of the results was further optimized. The ADMETlab 2.0 server is freely available, without registration, at https://admetmesh.scbdd.com/.
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Affiliation(s)
- Guoli Xiong
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, Hunan, China
| | - Zhenxing Wu
- Hangzhou Institute of Innovative Medicine, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, Zhejiang, China
| | - Jiacai Yi
- College of Computer, National University of Defense Technology, Changsha 410073, Hunan, China
| | - Li Fu
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, Hunan, China
| | - Zhijiang Yang
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, Hunan, China
| | - Changyu Hsieh
- Tencent Quantum Laboratory, Tencent, Shenzhen 518057, Guangdong, China
| | - Mingzhu Yin
- Department of Dermatology, Hunan Engineering Research Center of Skin Health and Disease, Hunan Key Laboratory of Skin Cancer and Psoriasis, Xiangya Hospital, Central South University, Changsha 410008, Hunan, China
| | - Xiangxiang Zeng
- Deparment of Computer Science, Hunan University, Changsha 410082, Hunan, China
| | - Chengkun Wu
- College of Computer, National University of Defense Technology, Changsha 410073, Hunan, China
| | - Aiping Lu
- Institute for Advancing Translational Medicine in Bone and Joint Diseases, School of Chinese Medicine, Hong Kong Baptist University, Hong Kong SAR, China
| | - Xiang Chen
- Department of Dermatology, Hunan Engineering Research Center of Skin Health and Disease, Hunan Key Laboratory of Skin Cancer and Psoriasis, Xiangya Hospital, Central South University, Changsha 410008, Hunan, China
| | - Tingjun Hou
- Hangzhou Institute of Innovative Medicine, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, Zhejiang, China
| | - Dongsheng Cao
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, Hunan, China
- Institute for Advancing Translational Medicine in Bone and Joint Diseases, School of Chinese Medicine, Hong Kong Baptist University, Hong Kong SAR, China
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Lv P, Man S, Xie L, Ma L, Gao W. Pathogenesis and therapeutic strategy in platinum resistance lung cancer. Biochim Biophys Acta Rev Cancer 2021; 1876:188577. [PMID: 34098035 DOI: 10.1016/j.bbcan.2021.188577] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 05/25/2021] [Accepted: 05/30/2021] [Indexed: 12/20/2022]
Abstract
Platinum compounds (cisplatin and carboplatin) represent the most active anticancer agents in clinical use both of lung cancer in mono-and combination therapies. However, platinum resistance limits its clinical application. It is necessary to understand the molecular mechanism of platinum resistance, identify predictive markers, and develop newer, more effective and less toxic agents to treat platinum resistance in lung cancer. Here, it summarizes the main molecular mechanisms associated with platinum resistance in lung cancer and the development of new approaches to tackle this clinically relevant problem. Moreover, it could lead to the development of more effective treatment for refractory lung cancer in future.
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Affiliation(s)
- Panpan Lv
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Microbiology, Ministry of Education, Tianjin Key Laboratory of Industry Microbiology, National and Local United Engineering Lab of Metabolic Control Fermentation Technology, China International Science and Technology Cooperation Base of Food Nutrition/Safety and Medicinal Chemistry, College of Biotechnology, Tianjin University of Science & Technology, Tianjin 300457, China
| | - Shuli Man
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Microbiology, Ministry of Education, Tianjin Key Laboratory of Industry Microbiology, National and Local United Engineering Lab of Metabolic Control Fermentation Technology, China International Science and Technology Cooperation Base of Food Nutrition/Safety and Medicinal Chemistry, College of Biotechnology, Tianjin University of Science & Technology, Tianjin 300457, China.
| | - Lu Xie
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Microbiology, Ministry of Education, Tianjin Key Laboratory of Industry Microbiology, National and Local United Engineering Lab of Metabolic Control Fermentation Technology, China International Science and Technology Cooperation Base of Food Nutrition/Safety and Medicinal Chemistry, College of Biotechnology, Tianjin University of Science & Technology, Tianjin 300457, China
| | - Long Ma
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Microbiology, Ministry of Education, Tianjin Key Laboratory of Industry Microbiology, National and Local United Engineering Lab of Metabolic Control Fermentation Technology, China International Science and Technology Cooperation Base of Food Nutrition/Safety and Medicinal Chemistry, College of Biotechnology, Tianjin University of Science & Technology, Tianjin 300457, China
| | - Wenyuan Gao
- Tianjin Key Laboratory for Modern Drug Delivery and High Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China.
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Xiong GL, Zhao Y, Liu L, Ma ZY, Lu AP, Cheng Y, Hou TJ, Cao DS. Computational Bioactivity Fingerprint Similarities To Navigate the Discovery of Novel Scaffolds. J Med Chem 2021; 64:7544-7554. [PMID: 34008979 DOI: 10.1021/acs.jmedchem.1c00234] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
As one of the central tasks of modern medicinal chemistry, scaffold hopping is expected to lead to the discovery of structural novel biological active compounds and broaden the chemical space of known active compounds. Here, we report the computational bioactivity fingerprint (CBFP) for easier scaffold hopping, where the predicted activities in multiple quantitative structure-activity relationship models are integrated to characterize the biological space of a molecule. In retrospective benchmarks, the CBFP representation shows outstanding scaffold hopping potential relative to other chemical descriptors. In the prospective validation for the discovery of novel inhibitors of poly [ADP-ribose] polymerase 1, 35 predicted compounds with diverse structures are tested, 25 of which show detectable growth-inhibitory activity; beyond this, the most potent (compound 6) has an IC50 of 0.263 nM. These results support the use of CBFP representation as the bioactivity proxy of molecules to explore uncharted chemical space and discover novel compounds.
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Affiliation(s)
- Guo-Li Xiong
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, Hunan 410003, China.,Hunan Key Laboratory of Diagnostic and Therapeutic Drug Research for Chronic Diseases, Central South University, Changsha, Hunan 410013, China
| | - Yue Zhao
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, Hunan 410003, China.,Hunan Key Laboratory of Diagnostic and Therapeutic Drug Research for Chronic Diseases, Central South University, Changsha, Hunan 410013, China
| | - Lu Liu
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, Hunan 410003, China
| | - Zhong-Ye Ma
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, Hunan 410003, China
| | - Ai-Ping Lu
- Institute for Advancing Translational Medicine in Bone and Joint Diseases, School of Chinese Medicine, Hong Kong Baptist University, 999077 Hong Kong SAR, China
| | - Yan Cheng
- Department of Pharmacy, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410003, China
| | - Ting-Jun Hou
- Innovation Institute for Artificial Intelligence in Medicine of Zhejiang University, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, Zhejiang 310058, China
| | - Dong-Sheng Cao
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, Hunan 410003, China.,Hunan Key Laboratory of Diagnostic and Therapeutic Drug Research for Chronic Diseases, Central South University, Changsha, Hunan 410013, China.,Institute for Advancing Translational Medicine in Bone and Joint Diseases, School of Chinese Medicine, Hong Kong Baptist University, 999077 Hong Kong SAR, China
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Zhao Y, Wang XG, Ma ZY, Xiong GL, Yang ZJ, Cheng Y, Lu AP, Huang ZJ, Cao DS. Systematic comparison of ligand-based and structure-based virtual screening methods on poly (ADP-ribose) polymerase-1 inhibitors. Brief Bioinform 2021; 22:6262239. [PMID: 33940596 DOI: 10.1093/bib/bbab135] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Revised: 03/16/2021] [Accepted: 03/23/2021] [Indexed: 11/12/2022] Open
Abstract
The poly (ADP-ribose) polymerase-1 (PARP1) has been regarded as a vital target in recent years and PARP1 inhibitors can be used for ovarian and breast cancer therapies. However, it has been realized that most of PARP1 inhibitors have disadvantages of low solubility and permeability. Therefore, by discovering more molecules with novel frameworks, it would have greater opportunities to apply it into broader clinical fields and have a more profound significance. In the present study, multiple virtual screening (VS) methods had been employed to evaluate the screening efficiency of ligand-based, structure-based and data fusion methods on PARP1 target. The VS methods include 2D similarity screening, structure-activity relationship (SAR) models, docking and complex-based pharmacophore screening. Moreover, the sum rank, sum score and reciprocal rank were also adopted for data fusion methods. The evaluation results show that the similarity searching based on Torsion fingerprint, six SAR models, Glide docking and pharmacophore screening using Phase have excellent screening performance. The best data fusion method is the reciprocal rank, but the sum score also performs well in framework enrichment. In general, the ligand-based VS methods show better performance on PARP1 inhibitor screening. These findings confirmed that adding ligand-based methods to the early screening stage will greatly improve the screening efficiency, and be able to enrich more highly active PARP1 inhibitors with diverse structures.
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Affiliation(s)
- Yue Zhao
- Xiangya School of Pharmaceutical Sciences, Central South University, P. R. China
| | | | - Zhong-Ye Ma
- Xiangya School of Pharmaceutical Sciences, Central South University, P. R. China
| | - Guo-Li Xiong
- Xiangya School of Pharmaceutical Sciences, Central South University, P. R. China
| | - Zhi-Jiang Yang
- Xiangya School of Pharmaceutical Sciences, Central South University, P. R. China
| | - Yan Cheng
- Department of Pharmacy, The Second Xiangya Hospital, Central South University, P. R. China
| | - Ai-Ping Lu
- Institute for Advancing Translational Medicine in Bone and Joint Diseases, School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, P. R. China
| | - Zhi-Jun Huang
- Center for Clinical Pharmacology, The Third Xiangya Hospital of Central South University, Hunan, P. R. China
| | - Dong-Sheng Cao
- Xiangya School of Pharmaceutical Sciences, Central South University, China
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Sabnis RW. Novel Azaquinolones as PARP1 Inhibitors for Treating Cancer. ACS Med Chem Lett 2021; 12:524-525. [PMID: 33859786 PMCID: PMC8040051 DOI: 10.1021/acsmedchemlett.1c00122] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Indexed: 12/17/2022] Open
Affiliation(s)
- Ram W. Sabnis
- Smith, Gambrell & Russell LLP, 1230 Peachtree Street NE, Suite
3100, Atlanta, Georgia 30309, United States
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40
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Li S, Li XY, Zhang TJ, Zhu J, Liu KL, Wang DP, Meng FH. Novel 4,5-dihydrospiro[benzo[c]azepine-1,1'-cyclohexan]-3(2H)-one derivatives as PARP-1 inhibitors: Design, synthesis and biological evaluation. Bioorg Chem 2021; 111:104840. [PMID: 33780687 DOI: 10.1016/j.bioorg.2021.104840] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 02/21/2021] [Accepted: 03/17/2021] [Indexed: 11/19/2022]
Abstract
To further explore the research of novel PARP-1 inhibitors, we designed and synthesized a series of novel amide PARP-1 inhibitors based on our previous research. Most compounds displayed certain antitumor activities against four tumor cell lines (A549, HepG2, HCT-116, and MCF-7). Specifically, the candidate compound R8e possessed strong anti-proliferative potency toward A549 cells with the IC50 value of 2.01 μM. Compound R8e had low toxicity to lung cancer cell line. And the in vitro enzyme inhibitory activity of compound R8e was better than rucaparib. Molecular docking studies provided a rational binding model of compound R8e in complex with rucaparib. The following cell cycle and apoptosis assays revealed that compound R8e could arrest cell cycle in the S phase and induce cell apoptosis. Western blot analysis further showed that compound R8e could effectively inhibit the PAR's biosynthesis and was more effective than rucaparib. Overall, based on the biological activity evaluation, compound R8e could be a potential lead compound for further developing novel amide PARP-1 inhibitors.
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Affiliation(s)
- Shuai Li
- School of Pharmacy, China Medical University, 77 Puhe Road, North New Area, Shenyang 110122, China
| | - Xin-Yang Li
- School of Pharmacy, China Medical University, 77 Puhe Road, North New Area, Shenyang 110122, China
| | - Ting-Jian Zhang
- School of Pharmacy, China Medical University, 77 Puhe Road, North New Area, Shenyang 110122, China
| | - Ju Zhu
- School of Pharmacy, China Medical University, 77 Puhe Road, North New Area, Shenyang 110122, China
| | - Kai-Li Liu
- School of Pharmacy, China Medical University, 77 Puhe Road, North New Area, Shenyang 110122, China
| | - De-Pu Wang
- School of Pharmacy, China Medical University, 77 Puhe Road, North New Area, Shenyang 110122, China
| | - Fan-Hao Meng
- School of Pharmacy, China Medical University, 77 Puhe Road, North New Area, Shenyang 110122, China.
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Velagapudi UK, Patel BA, Shao X, Pathak SK, Ferraris DV, Talele TT. Recent development in the discovery of PARP inhibitors as anticancer agents: a patent update (2016-2020). Expert Opin Ther Pat 2021; 31:609-623. [PMID: 33554679 DOI: 10.1080/13543776.2021.1886275] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
INTRODUCTION Discovery of small molecules that impede the activity of single-strand DNA repair enzyme, PARP1, has led to four marketed drugs for the treatment of advanced-stage cancers. Hence, there is a renewed enthusiasm in the PARP inhibitor discovery arena. To reduce nonspecific interactions or potential toxicities, and to understand the role of other minimally explored PARP enzymes, exciting new findings have emerged toward the development of selective inhibitors and targeted chemical biology probes. Importantly, the conventional PARP inhibitor design has evolved in a way that could potentially lead to multienzyme-targeting - a polypharmacological approach against aggressive cancers. AREAS COVERED This review comprises recent progress made in the development of PARP inhibitors, primarily focused on human cancers. Discovery of novel PARP inhibitors with pan, selective, and multi-target inhibition using in vitro and in vivo cancer models is summarized and critically evaluated. Emphasis is given to patents published during 2016-2020, excluding TNKS 1/2 inhibitors. EXPERT OPINION The outstanding success demonstrated by the FDA approved PARP inhibitors has fueled further clinical evaluations for expansion of their clinical utilities. The current clinical investigations include new candidates as well as marketed PARP-targeted drugs, both as single agents and in combination with other chemotherapeutics. Recent advances have also unveiled critical roles of other PARPs in oncogenic signal transduction, in addition to those of the well-documented PARP1/2 and TNKS1/2 enzymes. Further studies on lesser-known PARP members are urgently needed for functional annotations and for understanding their roles in cancer progression and other human diseases.
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Affiliation(s)
- Uday Kiran Velagapudi
- Pace Analytical Life Sciences, LLC, Suite 102, 19 Presidential Way, Woburn, MA, 01801, USA
| | - Bhargav A Patel
- Department of Chemistry and Biochemistry, The University of Notre Dame, 329 McCourtney Hall, Notre Dame, IN 46556, USA
| | - Xuwei Shao
- cFrontage Laboratories, Inc, 75 East Uwchlan Ave, Suite 100, Exton, PA, 19341, USA
| | - Sanjai Kumar Pathak
- dChemistry and Biochemistry Department, Queens College of the City University of New York, 65-30 Kissena Blvd., Flushing, NY, 11367, USA.,eChemistry Doctoral Program, Biochemistry Doctoral Program, The Graduate Center of the City University of New York, 365 5th Ave, New York, NY, 10016, USA
| | - Dana V Ferraris
- fDepartment of Chemistry, McDaniel College, 2 College Hill, Westminster, MD, 21157, USA
| | - Tanaji T Talele
- gDepartment of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, NY, 11439, USA
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Yang ZY, Yang ZJ, Zhao Y, Yin MZ, Lu AP, Chen X, Liu S, Hou TJ, Cao DS. PySmash: Python package and individual executable program for representative substructure generation and application. Brief Bioinform 2021; 22:6168498. [PMID: 33709154 DOI: 10.1093/bib/bbab017] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2020] [Revised: 01/06/2021] [Accepted: 01/12/2021] [Indexed: 01/23/2023] Open
Abstract
BACKGROUND Substructure screening is widely applied to evaluate the molecular potency and ADMET properties of compounds in drug discovery pipelines, and it can also be used to interpret QSAR models for the design of new compounds with desirable physicochemical and biological properties. With the continuous accumulation of more experimental data, data-driven computational systems which can derive representative substructures from large chemical libraries attract more attention. Therefore, the development of an integrated and convenient tool to generate and implement representative substructures is urgently needed. RESULTS In this study, PySmash, a user-friendly and powerful tool to generate different types of representative substructures, was developed. The current version of PySmash provides both a Python package and an individual executable program, which achieves ease of operation and pipeline integration. Three types of substructure generation algorithms, including circular, path-based and functional group-based algorithms, are provided. Users can conveniently customize their own requirements for substructure size, accuracy and coverage, statistical significance and parallel computation during execution. Besides, PySmash provides the function for external data screening. CONCLUSION PySmash, a user-friendly and integrated tool for the automatic generation and implementation of representative substructures, is presented. Three screening examples, including toxicophore derivation, privileged motif detection and the integration of substructures with machine learning (ML) models, are provided to illustrate the utility of PySmash in safety profile evaluation, therapeutic activity exploration and molecular optimization, respectively. Its executable program and Python package are available at https://github.com/kotori-y/pySmash.
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Affiliation(s)
- Zi-Yi Yang
- Department of Pharmacy, Xiangya Hospital, Central South University and the Xiangya School of Pharmaceutical Sciences, Central South University, Sichuan, China
| | - Zhi-Jiang Yang
- Xiangya School of Pharmaceutical Sciences, Central South University, Hunan, China
| | - Yue Zhao
- Xiangya School of Pharmaceutical Sciences, Central South University (Changsha), Sichuan, China
| | - Ming-Zhu Yin
- Department of Dermatology, Hunan Engineering Research Center of Skin Health and Disease, Hunan Key Laboratory of Skin Cancer and Psoriasis, Xiangya Hospital, Central South University, Hunan
| | - Ai-Ping Lu
- Institute for Advancing Translational Medicine in Bone and Joint Diseases, School of Chinese Medicine, Hong Kong Baptist University, Hong Kong
| | - Xiang Chen
- Department of Dermatology, Hunan Engineering Research Center of Skin Health and Disease, Hunan Key Laboratory of Skin Cancer and Psoriasis, Xiangya Hospital, Central South University, Hunan
| | - Shao Liu
- Department of Pharmacy, Xiangya Hospital, Central South University, Hunan
| | - Ting-Jun Hou
- College of Pharmaceutical Sciences, Zhejiang University, China
| | - Dong-Sheng Cao
- Xiangya School of Pharmaceutical Sciences, Central South University, China
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G-quadruplex binding properties of a potent PARP-1 inhibitor derived from 7-azaindole-1-carboxamide. Sci Rep 2021; 11:3869. [PMID: 33594142 PMCID: PMC7887208 DOI: 10.1038/s41598-021-83474-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2020] [Accepted: 01/15/2021] [Indexed: 12/19/2022] Open
Abstract
Poly ADP-ribose polymerases (PARP) are key proteins involved in DNA repair, maintenance as well as regulation of programmed cell death. For this reason they are important therapeutic targets for cancer treatment. Recent studies have revealed a close interplay between PARP1 recruitment and G-quadruplex stabilization, showing that PARP enzymes are activated upon treatment with a G4 ligand. In this work the DNA binding properties of a PARP-1 inhibitor derived from 7-azaindole-1-carboxamide, (2-[6-(4-pyrrolidin-1-ylmethyl-phenyl)-pyrrolo[2,3-b]pyridin-1-yl]-acetamide, compound 1) with model duplex and quadruplex DNA oligomers were studied by NMR, CD, fluorescence and molecular modelling. We provide evidence that compound 1 is a strong G-quadruplex binder. In addition we provide molecular details of the interaction of compound 1 with two model G-quadruplex structures: the single repeat of human telomeres, d(TTAGGGT)4, and the c-MYC promoter Pu22 sequence. The formation of defined and strong complexes with G-quadruplex models suggests a dual G4 stabilization/PARP inhibition mechanism of action for compound 1 and provides the molecular bases of its therapeutic potential.
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Li D, Kou Y, Gao Y, Liu S, Yang P, Hasegawa T, Su R, Guo J, Li M. Oxaliplatin induces the PARP1-mediated parthanatos in oral squamous cell carcinoma by increasing production of ROS. Aging (Albany NY) 2021; 13:4242-4257. [PMID: 33495407 PMCID: PMC7906208 DOI: 10.18632/aging.202386] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Accepted: 10/22/2020] [Indexed: 11/25/2022]
Abstract
Oral squamous cell carcinoma (OSCC) is one of the most common malignant tumors worldwide, and its prognosis is still not optimistic. Oxaliplatin is a type of platinum chemotherapeutic agent, but its treatment effects on OSCC and molecular mechanisms have not been fully elucidated. Parthanatos, a unique form of cell death, plays an important role in a variety of physiological and pathological processes. This study aims to investigate whether oxaliplatin inhibits OSCC by inducing parthanatos. Our results showed that oxaliplatin inhibited the proliferation and migration of OSCC cells in vitro, and also inhibited the tumorigenesis in vivo. Further experiments proved that oxaliplatin induced parthanatos in OSCC cells, characterized by depolarization of the mitochondrial membrane potential, up-regulation of PARP1, AIF and MIF in the nucleus, as well as the nuclear translocation of AIF. Meanwhile, PARP1 inhibitor rucaparib and siRNA against PARP1 attenuated oxaliplatin-induced parthanatos in OSCC cells. In addition, we found that oxaliplatin caused oxidative stress in OSCC cells, and antioxidant NAC not only relieved oxaliplatin-induced overproduction of reactive oxygen species (ROS) but also reversed parthanatos caused by oxaliplatin. In conclusion, our results indicate that oxaliplatin inhibits OSCC by activating PARP1-mediated parthanatos through increasing the production of ROS.
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Affiliation(s)
- Dongfang Li
- Department of Bone Metabolism, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University and Shandong Key Laboratory of Oral Tissue Regeneration and Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan 250012, China
| | - Yuying Kou
- Department of Bone Metabolism, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University and Shandong Key Laboratory of Oral Tissue Regeneration and Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan 250012, China
| | - Yuan Gao
- Department of Bone Metabolism, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University and Shandong Key Laboratory of Oral Tissue Regeneration and Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan 250012, China
| | - Shanshan Liu
- Department of Bone Metabolism, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University and Shandong Key Laboratory of Oral Tissue Regeneration and Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan 250012, China
| | - Panpan Yang
- Department of Bone Metabolism, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University and Shandong Key Laboratory of Oral Tissue Regeneration and Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan 250012, China
| | - Tomoka Hasegawa
- Department of Developmental Biology of Hard Tissue, Graduate School of Dental Medicine, Hokkaido University, Sapporo 060-8586, Japan
| | - Rongjian Su
- Life Science Institute of Jinzhou Medical University, College of Basic Medicine of Jinzhou Medical University, Cell Biology and Genetic Department of Jinzhou Medical University, Key Lab of Molecular and Cellular Biology of the Education Department of Liaoning Province, Jinzhou 121001, China
| | - Jie Guo
- Department of Bone Metabolism, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University and Shandong Key Laboratory of Oral Tissue Regeneration and Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan 250012, China
| | - Minqi Li
- Department of Bone Metabolism, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University and Shandong Key Laboratory of Oral Tissue Regeneration and Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan 250012, China
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Wengner AM, Scholz A, Haendler B. Targeting DNA Damage Response in Prostate and Breast Cancer. Int J Mol Sci 2020; 21:E8273. [PMID: 33158305 PMCID: PMC7663807 DOI: 10.3390/ijms21218273] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 10/29/2020] [Accepted: 10/30/2020] [Indexed: 02/06/2023] Open
Abstract
Steroid hormone signaling induces vast gene expression programs which necessitate the local formation of transcription factories at regulatory regions and large-scale alterations of the genome architecture to allow communication among distantly related cis-acting regions. This involves major stress at the genomic DNA level. Transcriptionally active regions are generally instable and prone to breakage due to the torsional stress and local depletion of nucleosomes that make DNA more accessible to damaging agents. A dedicated DNA damage response (DDR) is therefore essential to maintain genome integrity at these exposed regions. The DDR is a complex network involving DNA damage sensor proteins, such as the poly(ADP-ribose) polymerase 1 (PARP-1), the DNA-dependent protein kinase catalytic subunit (DNA-PKcs), the ataxia-telangiectasia-mutated (ATM) kinase and the ATM and Rad3-related (ATR) kinase, as central regulators. The tight interplay between the DDR and steroid hormone receptors has been unraveled recently. Several DNA repair factors interact with the androgen and estrogen receptors and support their transcriptional functions. Conversely, both receptors directly control the expression of agents involved in the DDR. Impaired DDR is also exploited by tumors to acquire advantageous mutations. Cancer cells often harbor germline or somatic alterations in DDR genes, and their association with disease outcome and treatment response led to intensive efforts towards identifying selective inhibitors targeting the major players in this process. The PARP-1 inhibitors are now approved for ovarian, breast, and prostate cancer with specific genomic alterations. Additional DDR-targeting agents are being evaluated in clinical studies either as single agents or in combination with treatments eliciting DNA damage (e.g., radiation therapy, including targeted radiotherapy, and chemotherapy) or addressing targets involved in maintenance of genome integrity. Recent preclinical and clinical findings made in addressing DNA repair dysfunction in hormone-dependent and -independent prostate and breast tumors are presented. Importantly, the combination of anti-hormonal therapy with DDR inhibition or with radiation has the potential to enhance efficacy but still needs further investigation.
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Affiliation(s)
| | | | - Bernard Haendler
- Preclinical Research, Research & Development, Pharmaceuticals, Bayer AG, Müllerstr. 178, 13353 Berlin, Germany; (A.M.W.); (A.S.)
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