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CD38: T Cell Immuno-Metabolic Modulator. Cells 2020; 9:cells9071716. [PMID: 32709019 PMCID: PMC7408359 DOI: 10.3390/cells9071716] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 07/14/2020] [Accepted: 07/15/2020] [Indexed: 12/22/2022] Open
Abstract
Activation and subsequent differentiation of T cells following antigenic stimulation are triggered by highly coordinated signaling events that lead to instilling cells with a discrete metabolic and transcriptional feature. Compelling studies indicate that intracellular nicotinamide adenine dinucleotide (NAD+) levels have profound influence on diverse signaling and metabolic pathways of T cells, and hence dictate their functional fate. CD38, a major mammalian NAD+ glycohydrolase (NADase), expresses on T cells following activation and appears to be an essential modulator of intracellular NAD+ levels. The enzymatic activity of CD38 in the process of generating the second messenger cADPR utilizes intracellular NAD+, and thus limits its availability to different NAD+ consuming enzymes (PARP, ART, and sirtuins) inside the cells. The present review discusses how the CD38-NAD+ axis affects T cell activation and differentiation through interfering with their signaling and metabolic processes. We also describe the pivotal role of the CD38-NAD+ axis in influencing the chromatin remodeling and rewiring T cell response. Overall, this review emphasizes the crucial contribution of the CD38-NAD+ axis in altering T cell response in various pathophysiological conditions.
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Dash S, Balasubramaniam M, Martínez-Rivera FJ, Godino A, Peck EG, Patnaik S, Suar M, Calipari ES, Nestler EJ, Villalta F, Dash C, Pandhare J. Cocaine-regulated microRNA miR-124 controls poly (ADP-ribose) polymerase-1 expression in neuronal cells. Sci Rep 2020; 10:11197. [PMID: 32641757 PMCID: PMC7343862 DOI: 10.1038/s41598-020-68144-6] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Accepted: 06/18/2020] [Indexed: 12/13/2022] Open
Abstract
MiR-124 is a highly expressed miRNA in the brain and regulates genes involved in neuronal function. We report that miR-124 post-transcriptionally regulates PARP-1. We have identified a highly conserved binding site of miR-124 in the 3'-untranslated region (3'UTR) of Parp-1 mRNA. We demonstrate that miR-124 directly binds to the Parp-1 3'UTR and mutations in the seed sequences abrogate binding between the two RNA molecules. Luciferase reporter assay revealed that miR-124 post-transcriptionally regulates Parp-1 3'UTR activity in a dopaminergic neuronal cell model. Interestingly, the binding region of miR-124 in Parp-1 3'UTR overlapped with the target sequence of miR-125b, another post-transcriptional regulator of Parp-1. Our results from titration and pull-down studies revealed that miR-124 binds to Parp-1 3'UTR with greater affinity and confers a dominant post-transcriptional inhibition compared to miR-125b. Interestingly, acute or chronic cocaine exposure downregulated miR-124 levels concomitant with upregulation of PARP-1 protein in dopaminergic-like neuronal cells in culture. Levels of miR-124 were also downregulated upon acute or chronic cocaine exposure in the mouse nucleus accumbens (NAc)-a key reward region of brain. Time-course studies revealed that cocaine treatment persistently downregulated miR-124 in NAc. Consistent with this finding, miR-124 expression was also significantly reduced in the NAc of animals conditioned for cocaine place preference. Collectively, these studies identify Parp-1 as a direct target of miR-124 in neuronal cells, establish miR-124 as a cocaine-regulated miRNA in the mouse NAc, and highlight a novel pathway underlying the molecular effects of cocaine.
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Affiliation(s)
- Sabyasachi Dash
- Center for AIDS Health Disparities Research, Meharry Medical College, Old Hospital Bldg-CAHDR, Room 5023, 1005 Dr. DB Todd Jr Blvd., Nashville, TN, 37208, USA
- Center for Molecular and Behavioral Neuroscience, Meharry Medical College, Nashville, TN, 37208, USA
- School of Graduate Studies and Research, Meharry Medical College, Nashville, TN, 37208, USA
- School of Biotechnology, Kalinga Institute of Industrial Technology University, Bhubaneswar, Odisha, India
| | - Muthukumar Balasubramaniam
- Center for AIDS Health Disparities Research, Meharry Medical College, Old Hospital Bldg-CAHDR, Room 5023, 1005 Dr. DB Todd Jr Blvd., Nashville, TN, 37208, USA
- Center for Molecular and Behavioral Neuroscience, Meharry Medical College, Nashville, TN, 37208, USA
- Department of Biochemistry, Cancer Biology, Pharmacology and Neuroscience, Meharry Medical College, Nashville, TN, 37208, USA
| | - Freddyson J Martínez-Rivera
- Nash Family Department of Neuroscience and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Arthur Godino
- Nash Family Department of Neuroscience and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Emily G Peck
- Nash Family Department of Neuroscience and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Srinivas Patnaik
- School of Biotechnology, Kalinga Institute of Industrial Technology University, Bhubaneswar, Odisha, India
| | - Mrutyunjay Suar
- School of Biotechnology, Kalinga Institute of Industrial Technology University, Bhubaneswar, Odisha, India
| | - Erin S Calipari
- Department of Pharmacology, Vanderbilt University Medical Center, Nashville, TN, 37232, USA
| | - Eric J Nestler
- Nash Family Department of Neuroscience and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Fernando Villalta
- Center for AIDS Health Disparities Research, Meharry Medical College, Old Hospital Bldg-CAHDR, Room 5023, 1005 Dr. DB Todd Jr Blvd., Nashville, TN, 37208, USA
- Department of Microbiology, Immunology, and Physiology, Meharry Medical College, Nashville, TN, 37208, USA
| | - Chandravanu Dash
- Center for AIDS Health Disparities Research, Meharry Medical College, Old Hospital Bldg-CAHDR, Room 5023, 1005 Dr. DB Todd Jr Blvd., Nashville, TN, 37208, USA.
- Center for Molecular and Behavioral Neuroscience, Meharry Medical College, Nashville, TN, 37208, USA.
- Department of Biochemistry, Cancer Biology, Pharmacology and Neuroscience, Meharry Medical College, Nashville, TN, 37208, USA.
| | - Jui Pandhare
- Center for AIDS Health Disparities Research, Meharry Medical College, Old Hospital Bldg-CAHDR, Room 5023, 1005 Dr. DB Todd Jr Blvd., Nashville, TN, 37208, USA.
- Center for Molecular and Behavioral Neuroscience, Meharry Medical College, Nashville, TN, 37208, USA.
- School of Graduate Studies and Research, Meharry Medical College, Nashville, TN, 37208, USA.
- Department of Microbiology, Immunology, and Physiology, Meharry Medical College, Nashville, TN, 37208, USA.
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Zebrafish Xenografts Unveil Sensitivity to Olaparib beyond BRCA Status. Cancers (Basel) 2020; 12:cancers12071769. [PMID: 32630796 PMCID: PMC7408583 DOI: 10.3390/cancers12071769] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 06/11/2020] [Accepted: 06/29/2020] [Indexed: 12/21/2022] Open
Abstract
Poly (ADP-ribose) polymerase (PARP) inhibition in BRCA-mutated cells results in an incapacity to repair DNA damage, leading to cell death caused by synthetic lethality. Within the treatment options for advanced triple negative breast cancer, the PARP inhibitor olaparib is only given to patients with BRCA1/2 mutations. However, these patients may show resistance to this drug and BRCA1/2 wild-type tumors can show a striking sensitivity, making BRCA status a poor biomarker for treatment choice. Aiming to investigate if the zebrafish model can discriminate sensitivities to olaparib, we developed zebrafish xenografts with different BRCA status and measured tumor response to treatment, as well as its impact on angiogenesis and metastasis. When challenged with olaparib, xenografts revealed sensitivity phenotypes independent of BRCA. Moreover, its combination with ionizing radiation increased the cytotoxic effects, showing potential as a combinatorial regimen. In conclusion, we show that the zebrafish xenograft model may be used as a sensitivity profiling platform for olaparib in monotherapy or in combinatorial regimens. Hence, this model presents as a promising option for the future establishment of patient-derived xenografts for personalized medicine approaches beyond BRCA status.
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254
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Pellegrino-Coppola D. Regulation of the mitochondrial permeability transition pore and its effects on aging. MICROBIAL CELL (GRAZ, AUSTRIA) 2020; 7:222-233. [PMID: 32904375 PMCID: PMC7453641 DOI: 10.15698/mic2020.09.728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 06/12/2020] [Accepted: 06/15/2020] [Indexed: 11/30/2022]
Abstract
Aging is an evolutionarily conserved process and is tightly connected to mitochondria. To uncover the aging molecular mechanisms related to mitochondria, different organisms have been extensively used as model systems. Among these, the budding yeast Saccharomyces cerevisiae has been reported multiple times as a model of choice when studying cellular aging. In particular, yeast provides a quick and trustworthy system to identify shared aging genes and pathway patterns. In this viewpoint on aging and mitochondria, I will focus on the mitochondrial permeability transition pore (mPTP), which has been reported and proposed as a main player in cellular aging. I will make several parallelisms with yeast to highlight how this unicellular organism can be used as a guidance system to understand conserved cellular and molecular events in multicellular organisms such as humans. Overall, a thread connecting the preservation of mitochondrial functionality with the activity of the mPTP emerges in the regulation of cell survival and cell death, which in turn could potentially affect aging and aging-related diseases.
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255
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Ren N, Chen L, Li B, Rankin GO, Chen YC, Tu Y. Purified Tea ( Camellia sinensis (L.) Kuntze) Flower Saponins Induce the p53-Dependent Intrinsic Apoptosis of Cisplatin-Resistant Ovarian Cancer Cells. Int J Mol Sci 2020; 21:E4324. [PMID: 32560563 PMCID: PMC7352341 DOI: 10.3390/ijms21124324] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 06/09/2020] [Accepted: 06/16/2020] [Indexed: 02/03/2023] Open
Abstract
Ovarian cancer is currently ranked at fifth in cancer deaths among women. Patients who have undergone cisplatin-based chemotherapy can experience adverse effects or become resistant to treatment, which is a major impediment for ovarian cancer treatment. Natural products from plants have drawn great attention in the fight against cancer recently. In this trial, purified tea (Camellia sinensis (L.) Kuntze) flower saponins (PTFSs), whose main components are Chakasaponin I and Chakasaponin IV, inhibited the growth and proliferation of ovarian cancer cell lines A2780/CP70 and OVCAR-3. Flow cytometry, caspase activity and Western blotting analysis suggested that such inhibitory effects of PTFSs on ovarian cancer cells were attributed to the induction of cell apoptosis through the intrinsic pathway rather than extrinsic pathway. The p53 protein was then confirmed to play an important role in PTFS-induced intrinsic apoptosis, and the levels of its downstream proteins such as caspase families, Bcl-2 families, Apaf-1 and PARP were regulated by PTFS treatment. In addition, the upregulation of p53 expression by PTFSs were at least partly induced by DNA damage through the ATM/Chk2 pathway. The results help us to understand the mechanisms underlying the effects of PTFSs on preventing and treating platinum-resistant ovarian cancer.
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Affiliation(s)
- Ning Ren
- Department of Tea Science, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, China; (N.R.); (L.C.); (B.L.)
- College of Health, Science, Technology and Mathematics, Alderson Broaddus University, 101 College Hill Drive, Philippi, WV 26416, USA
| | - Lianfu Chen
- Department of Tea Science, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, China; (N.R.); (L.C.); (B.L.)
- College of Health, Science, Technology and Mathematics, Alderson Broaddus University, 101 College Hill Drive, Philippi, WV 26416, USA
| | - Bo Li
- Department of Tea Science, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, China; (N.R.); (L.C.); (B.L.)
| | - Gary O. Rankin
- Department of Biomedical Sciences, Joan C. Edwards School of Medicine, Marshall University, Huntington, WV 25755, USA;
| | - Yi Charlie Chen
- College of Health, Science, Technology and Mathematics, Alderson Broaddus University, 101 College Hill Drive, Philippi, WV 26416, USA
| | - Youying Tu
- Department of Tea Science, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, China; (N.R.); (L.C.); (B.L.)
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256
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Chen Y, Bao C, Zhang X, Lin X, Fu Y. Knockdown of LINC00662 represses AK4 and attenuates radioresistance of oral squamous cell carcinoma. Cancer Cell Int 2020; 20:244. [PMID: 32549791 PMCID: PMC7296632 DOI: 10.1186/s12935-020-01286-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Accepted: 05/22/2020] [Indexed: 12/12/2022] Open
Abstract
Background LncRNAs play crucial roles in the development of carcinomas. However, the investigation of LINC00662 in Oral squamous cell carcinoma (OSCC) is still elusive. Methods qRT-PCR assay tested the expression levels of LINC00662, hnRNPC and AK4. With exposure to irradiation, CCK-8, colony formation, flow cytometry and western blot experiments, respectively determined the function of LINC00662 in the radiosensitivity of OSCC cells. Then RIP and western blot assays affirmed the interaction between hnRNPC protein and LINC00662 or AK4. Finally, rescue assays validated the regulation mechanism of LINC00662 in the radioresistance of OSCC. Results In the present report, LINC00662 was overexpressed in OSCC and its silencing could alleviate radioresistance of OSCC. Furthermore, the interaction between hnRNPC protein and LINC00662 or AK4 was uncovered. Besides, LINC00662 regulated AK4 mRNA stability through binding to hnRNPC protein. To sum up, LINC00662 modulated the radiosensitivity of OSCC cells via hnRNPC-modulated AK4. Conclusion The molecular mechanism of the LINC00662/hnRNPC/AK4 axis was elucidated in OSCC, which exhibited a promising therapeutic direction for patients with OSCC.
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Affiliation(s)
- Yangzong Chen
- Department of Chemotherapy and Radiotherapy, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027 Zhejiang China
| | - Chunchun Bao
- Department of Chemotherapy and Radiotherapy, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027 Zhejiang China
| | - Xiuxing Zhang
- Department of Chemotherapy and Radiotherapy, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027 Zhejiang China
| | - Xinshi Lin
- Department of Chemotherapy and Radiotherapy, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027 Zhejiang China
| | - Yimou Fu
- Department of Chemotherapy and Radiotherapy, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027 Zhejiang China
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257
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Liang Y, Zhou R, Liang X, Kong X, Yang B. Pharmacological targets and molecular mechanisms of plumbagin to treat colorectal cancer: A systematic pharmacology study. Eur J Pharmacol 2020; 881:173227. [PMID: 32505664 DOI: 10.1016/j.ejphar.2020.173227] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Revised: 05/14/2020] [Accepted: 05/28/2020] [Indexed: 12/14/2022]
Abstract
Plumbagin (PL) pharmacologically plays the anti-proliferative effects in cancer cells, including effective suppression of colorectal cancer (CRC). However, the exact molecular mechanism of PL to treat CRC remains unclear. Using available SwissTargetPrediction and SuperPred databases, the anti-cancer biotargets of PL were identified, and the CRC-diseased targets were obtained through a DisGeNET database. The biological processes, and signaling pathways of PL to treat CRC were identified and visualized. Further, clinical and cell culture data were used to validate some bioinformatic findings. As shown in bioinformatics findings, 64 predictive biotargets of PL to treat CRC were collected, and 7 most important biotargets of tumor protein p53 (TP53), glyceraldehyde-3-phosphate dehydrogenase (GAPDH), mitogen-activated protein kinase 1 (MAPK1), E1A-associated protein p300 (EP300), poly (ADP-ribose) polymerase 1 (PARP1), nuclear factor kappa p65 protein (RELA), Bcl-2 like protein 1 (BCL2L1) were identified respectively. In addition, top 20 functional biological processes, signaling pathways of PL to treat CRC were screened and prioritized. In human study, CRC samples showed elevated expressions of neoplastic MAPK1, PARP1 mRNAs and reduced EP300 mRNA level. In cell culture study, PL-treated CRC cells resulted in down-regulated MAPK1, PARP1 mRNA expressions and up-regulation of EP300 mRNA level, characterized with suppressed cell proliferation. Taken together, the therapeutic biotargets and molecular mechanisms of PL to treat CRC were screened and identified by using a systematic pharmacology analysis, and some bioinformatic findings were validated in clinical and cell line experiments. Potentially, these hub biotargets may be the biomarkers for CRC detection and treatment.
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Affiliation(s)
- Yujia Liang
- College of Pharmacy, Guangxi Medical University, Guangxi, Nanning, PR China
| | - Rui Zhou
- Department of Hepatobiliary Surgery, Guigang City People's Hospital, The Eighth Affiliated Hospital of Guangxi Medical University, Guigang, Guangxi, PR China
| | - Xiaoliu Liang
- College of Pharmacy, Guangxi Medical University, Guangxi, Nanning, PR China
| | - Xiaolong Kong
- College of Pharmacy, Guangxi Medical University, Guangxi, Nanning, PR China.
| | - Bin Yang
- College of Pharmacy, Guangxi Medical University, Guangxi, Nanning, PR China.
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258
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Rudolph J, Mahadevan J, Luger K. Probing the Conformational Changes Associated with DNA Binding to PARP1. Biochemistry 2020; 59:2003-2011. [PMID: 32357296 DOI: 10.1021/acs.biochem.0c00256] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Poly(ADP-ribose) polymerase 1 (PARP1) is an important first responder in the mechanism of DNA repair in eukaryotic cells. It is also a validated drug target, with four different PARP inhibitors (PARPi) approved for the treatment of BRCA-negative cancers. Despite past efforts, many aspects of PARPi are poorly understood, in particular their ability to trap PARP1 on chromatin and the relationships between their potencies, cellular toxicities, and trapping efficiencies. Because PARP trapping is widely believed to originate in allosteric coupling between DNA binding and the catalytic site, we further investigated the binding properties of PARP1 to a model for DNA with a double-strand break in the presence and absence of PARPi. Specifically, we have used sequential mixing stopped-flow spectroscopy to identify a slow conformational change that follows rapid DNA binding. Using a range of DNA concentrations and different mutants of PARP1 we demonstrate that this conformational change is one of the steps of the "monkey bar mechanism" that promotes DNA-dependent dissociation of DNA. This conformational change also corresponds to the previously identified conformational change associated with DNA-dependent activation of PARP1. Despite linking the conformational change associated with DNA binding and release to DNA activation, we find no evidence for PARPi perturbing this allosteric coupling.
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Affiliation(s)
- Johannes Rudolph
- Department of Biochemistry, University of Colorado Boulder, Boulder, Colorado 80309, United States
| | - Jyothi Mahadevan
- 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
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Ruff M, Kizilbash S, Buckner J. Further understanding of glioma mechanisms of pathogenesis: implications for therapeutic development. Expert Rev Anticancer Ther 2020; 20:355-363. [PMID: 32301635 DOI: 10.1080/14737140.2020.1757440] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Introduction: Recent discoveries in the molecular makeup of gliomas, the relationship of certain molecular drivers, and the patient's response to therapy and overall prognosis have resulted in a paradigm shift and redefined our understanding of glioma and revealed potential vulnerabilities within this recalcitrant and lethal disease.Areas covered: We summarize the current classification of malignant glioma in the context of the historical background, current data-driven treatment strategies, and recent discoveries of the mechanisms of pathogenesis of this disease which recapitulates the developing brain. We describe the relationship to common genetic alterations found in glioma, and possible avenues to exploit these newly revealed mechanisms.Expert opinion: Improved understanding of the molecular underpinnings of this disease has been directly translated into treatment decisions and an improved ability to counsel patients regarding their prognosis. We are beginning to see the first glimmer of a return on the investment in regard to immunotherapy in malignant glioma, with further anticipated successful exploitations of the unique pathophysiology of glioma.
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Affiliation(s)
- Michael Ruff
- Department of Neurology, Mayo Clinic, Rochester, MN, USA.,Department of Medical Oncology, Mayo Clinic, Rochester, MN, USA
| | - Sani Kizilbash
- Department of Medical Oncology, Mayo Clinic, Rochester, MN, USA
| | - Jan Buckner
- Department of Medical Oncology, Mayo Clinic, Rochester, MN, USA
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Abstract
Currently the study of Regulated Cell Death (RCD) processes is limited to the use of lysed cell populations for Western blot analysis of each separate RCD process. We have previously shown that intracellular antigen flow cytometric analysis of RIP3, Caspase-3 and cell viability dye allowed the determination of levels of apoptosis (Caspase-3+ ve/RIP3− ve), necroptosis (RIP3Hi + ve/Caspase-3− ve) and RIP1-dependent apoptosis (Caspase-3+ ve/RIP3+ ve) in a single Jurkat cell population. The addition of more intracellular markers allows the determination of the incidence of parthanatos (PARP), DNA Damage Response (DDR, H2AX), H2AX hyper-activation of PARP (H2AX/PARP) autophagy (LC3B) and ER stress (PERK), thus allowing the identification of 124 sub-populations both within live and dead cell populations. Shikonin simultaneously induced Jurkat cell apoptosis and necroptosis the degree of which can be shown flow cytometrically together with the effects of blockade of these forms of cell death by zVAD and necrostatin-1 have on specific RCD populations including necroptosis, early and late apoptosis and RIP1-dependent apoptosis phenotypes in live and dead cells. Necrostatin-1 and zVAD was shown to modulate levels of shikonin induced DDR, hyper-action of PARP and parthanatos in the four forms of RCD processes analysed. LC3B was up-regulated by combined treatment of zVAD with chloroquine which also revealed that DNA damage was reduced in live cells but enhanced in dead cells indicating the role of autophagy in maintaining cell health. This approach to RCD research should be a great advance to understanding the mechanisms of drugs and their effects upon RCD populations.
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261
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Tarsounas M, Sung P. The antitumorigenic roles of BRCA1-BARD1 in DNA repair and replication. Nat Rev Mol Cell Biol 2020; 21:284-299. [PMID: 32094664 PMCID: PMC7204409 DOI: 10.1038/s41580-020-0218-z] [Citation(s) in RCA: 187] [Impact Index Per Article: 46.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/22/2020] [Indexed: 11/09/2022]
Abstract
The tumour suppressor breast cancer type 1 susceptibility protein (BRCA1) promotes DNA double-strand break (DSB) repair by homologous recombination and protects DNA replication forks from attrition. BRCA1 partners with BRCA1-associated RING domain protein 1 (BARD1) and other tumour suppressor proteins to mediate the initial nucleolytic resection of DNA lesions and the recruitment and regulation of the recombinase RAD51. The discovery of the opposing functions of BRCA1 and the p53-binding protein 1 (53BP1)-associated complex in DNA resection sheds light on how BRCA1 influences the choice of homologous recombination over non-homologous end joining and potentially other mutagenic pathways of DSB repair. Understanding the functional crosstalk between BRCA1-BARD1 and its cofactors and antagonists will illuminate the molecular basis of cancers that arise from a deficiency or misregulation of chromosome damage repair and replication fork maintenance. Such knowledge will also be valuable for understanding acquired tumour resistance to poly(ADP-ribose) polymerase (PARP) inhibitors and other therapeutics and for the development of new treatments. In this Review, we discuss recent advances in elucidating the mechanisms by which BRCA1-BARD1 functions in DNA repair, replication fork maintenance and tumour suppression, and its therapeutic relevance.
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Affiliation(s)
- Madalena Tarsounas
- Genome Stability and Tumourigenesis Group, Oxford Institute for Radiation Oncology, Department of Oncology, University of Oxford, Oxford, UK.
| | - Patrick Sung
- Department of Biochemistry and Structural Biology, University of Texas Health Science Center, San Antonio, TX, USA.
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Demétrio de Souza França P, Roberts S, Kossatz S, Guru N, Mason C, Zanoni DK, Abrahão M, Schöder H, Ganly I, Patel SG, Reiner T. Fluorine-18 labeled poly (ADP-ribose) polymerase1 inhibitor as a potential alternative to 2-deoxy-2-[ 18F]fluoro-d-glucose positron emission tomography in oral cancer imaging. Nucl Med Biol 2020; 84-85:80-87. [PMID: 32135475 PMCID: PMC7253343 DOI: 10.1016/j.nucmedbio.2020.01.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Revised: 01/09/2020] [Accepted: 01/21/2020] [Indexed: 12/18/2022]
Abstract
OBJECTIVES The evaluation of disease extent and post-therapy surveillance of head and neck cancer using 2-deoxy-2-[18F]fluoro-d-glucose ([18F]FDG) PET is often complicated by physiological uptake in normal tissues of the head and neck region, especially after surgery or radiotherapy. However, irrespective of low positive predictive values, [18F]FDG PET remains the standard of care to stage the disease and monitor recurrences. Here, we report the preclinical use of a targeted poly (ADP-ribose) polymerase1 (PARP1) binding PET tracer, fluorine-18 labeled poly (ADP-ribose) polymerase1 inhibitor ([18F]PARPi), as a potential alternative with greater specificity. METHODS Using an orthotopic xenograft mouse model injected with either FaDu or Cal 27 (human squamous cell carcinoma cell lines) we performed PET/CT scans with the 2 tracers and compared the results. Gamma counts and autoradiography were also assessed and correlated with histology. RESULTS The average retained activity of [18F]PARPi across cell lines in tumor-bearing tongues was 0.9 ± 0.3%ID/g, 4.1 times higher than in control (0.2 ± 0.04%ID/g). Autoradiography and histology confirmed that the activity arose almost exclusively from the tumor areas, with a signal/normal tissue around a ratio of 42.9 ± 21.4. In vivo, [18F]PARPi-PET allowed delineation of tumor from healthy tissue (p < .005), whereas [18F]FDG failed to do so (p = .209). CONCLUSIONS AND IMPLICATIONS FOR PATIENT CARE We demonstrate that [18F]PARPi is more specific to tongue tumor tissue than [18F]FDG. [18F]PARPi PET allows for the straightforward delineation of oral cancer in mouse models, suggesting that clinical translation could result in improved imaging of head and neck cancer when compared to [18F]FDG.
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Affiliation(s)
- Paula Demétrio de Souza França
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, NY, USA; Department of Otorhinolaryngology and Head and Neck Surgery, Federal University of São Paulo, SP, Brazil.
| | - Sheryl Roberts
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, NY, USA.
| | - Susanne Kossatz
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, NY, USA.
| | - Navjot Guru
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, NY, USA.
| | - Christian Mason
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, NY, USA.
| | | | - Marcio Abrahão
- Department of Otorhinolaryngology and Head and Neck Surgery, Federal University of São Paulo, SP, Brazil
| | - Heiko Schöder
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, NY, USA.
| | - Ian Ganly
- Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA; Weill Cornell Medical College, New York, NY, USA.
| | - Snehal G Patel
- Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA; Weill Cornell Medical College, New York, NY, USA.
| | - Thomas Reiner
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, NY, USA; Weill Cornell Medical College, New York, NY, USA; Chemical Biology Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA.
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Chen YC, Chen PN, Lin CW, Yang WE, Ho YT, Yang SF, Chuang CY. Cantharidic acid induces apoptosis in human nasopharyngeal carcinoma cells through p38-mediated upregulation of caspase activation. ENVIRONMENTAL TOXICOLOGY 2020; 35:619-627. [PMID: 31916385 DOI: 10.1002/tox.22897] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Revised: 12/19/2019] [Accepted: 12/27/2019] [Indexed: 06/10/2023]
Abstract
Cantharidic acid (CA) is the hydrolysis product of the acid anhydride cantharidin, which is a natural toxin secreted by several species of blister beetles. Several studies have indicated that as an inhibitor of protein phosphatase 2 (PP2A), CA induces apoptosis in various human cancer cells. However, the effect of CA on human nasopharyngeal carcinoma (NPC) cells and the underlying pathways have not been addressed. In our current study, we tested the hypothesis that CA treatment reduces the viability of human NPC cells (HONE-1, NPC-39, and NPC-BM) by inducing apoptosis. Results indicated that CA markedly reduced cell viability, which was revealed by the upregulation of caspase activation in extrinsic and intrinsic apoptosis pathways as well as the upregulation of extracellular-signal-regulated kinase 1/2 (ERK1/2), p38, and c-Jun N-terminal kinase 1/2 (JNK1/2) pathways. Coadministration of a p38 inhibitor (SB203580) with CA abolished the activation of caspase proteins. These findings indicated that CA treatment leads to apoptosis in human NPC cells through the upregulation of caspase activation, mediated particularly by the p38 pathway. Hence, CA is a promising therapeutic agent for human NPC.
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Affiliation(s)
- Yi-Ching Chen
- Department of Medical Research, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - Pei-Ni Chen
- Institute of Biochemistry, Microbiology and Immunology, Chung Shan Medical University, Taichung, Taiwan
| | - Chiao-Wen Lin
- Institute of Oral Sciences, Chung Shan Medical University, Taichung, Taiwan
- Department of Dentistry, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - Wei-En Yang
- Department of Medical Research, Chung Shan Medical University Hospital, Taichung, Taiwan
- Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan
| | - Yu-Ting Ho
- Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan
| | - Shun-Fa Yang
- Department of Medical Research, Chung Shan Medical University Hospital, Taichung, Taiwan
- Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan
| | - Chun-Yi Chuang
- School of Medicine, Chung Shan Medical University, Taichung, Taiwan
- Department of Otolaryngology, Chung Shan Medical University Hospital, Taichung, Taiwan
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264
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Akpolat M, Oz ZS, Gulle K, Hamamcioglu AC, Bakkal BH, Kececi M. X irradiation induced colonic mucosal injury and the detection of apoptosis through PARP-1/p53 regulatory pathway. Biomed Pharmacother 2020; 127:110134. [PMID: 32361637 DOI: 10.1016/j.biopha.2020.110134] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Revised: 03/25/2020] [Accepted: 03/27/2020] [Indexed: 12/13/2022] Open
Abstract
This study aimed to explore whether PARP-1 regulatory pathway mediated X irradiation induced cell cycle arrest and apoptosis or not. In this regard, colonic mucosal injury caused by whole-body X-irradiation induced apoptosis through PARP-1, caspase 3 and p53 regulatory pathway were evaluated in experimental rat models. Eighteen Wistar albino rats were divided into three groups. Two radiation groups received 8.3 Gy dose of whole-body X-irradiation as a single dose and the control group received physiological saline intraperitoneally. Radiation groups were sacrificed after 6 h and 4 days of irradiation. PARP-1 and caspase 3 expression in the nuclei of colonic crypt cells significantly increased 6 h after irradiation, and declined 4 days after irradiation. In conflict with other studies that reported p53 as not being expressed widely in colonic mucosa, in our study the expressions of p53 were elevated both in the cytoplasm and in the nucleus of the crypt cells, especially 6 h after irradiation. In the radiation groups, colonic mucosal injury score was significantly elevated compared with that of the control group. Our data demonstrated that PARP-1, caspase-3 and p53 expression increased in colonic mucosa 6 h after irradiation.
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Affiliation(s)
- Meryem Akpolat
- Zonguldak Bulent Ecevit University, Faculty of Medicine, Department of Histology and Embryology, Zonguldak, Turkey.
| | - Zehra Safi Oz
- Zonguldak Bulent Ecevit University Faculty of Medicine, Department of Medical Biology, Zonguldak, Turkey.
| | - Kanat Gulle
- Suleyman Demirel University, Faculty of Medicine, Department of Histology and Embryology, Isparta, Turkey.
| | - Ayse C Hamamcioglu
- Zonguldak Bulent Ecevit University, Faculty of Pharmacy, Department of Biochemistry, Zonguldak, Turkey.
| | - Bekir H Bakkal
- Zonguldak Bulent Ecevit University, Faculty of Medicine, Department of Radiation Oncology, Zonguldak, Turkey.
| | - Mete Kececi
- Zonguldak Bulent Ecevit University, Faculty of Medicine, Department of Histology and Embryology, Zonguldak, Turkey
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265
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Jung JH, Lee HJ, Kim JH, Sim DY, Im E, Kim S, Chang S, Kim SH. Colocalization of MID1IP1 and c-Myc is Critically Involved in Liver Cancer Growth via Regulation of Ribosomal Protein L5 and L11 and CNOT2. Cells 2020; 9:cells9040985. [PMID: 32316188 PMCID: PMC7227012 DOI: 10.3390/cells9040985] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 04/01/2020] [Accepted: 04/13/2020] [Indexed: 12/11/2022] Open
Abstract
Though midline1 interacting protein 1 (MID1IP1) was known as one of the glucose-responsive genes regulated by carbohydrate response element binding protein (ChREBP), the underlying mechanisms for its oncogenic role were never explored. Thus, in the present study, the underlying molecular mechanism of MID1P1 was elucidated mainly in HepG2 and Huh7 hepatocellular carcinoma cells (HCCs). MID1IP1 was highly expressed in HepG2, Huh7, SK-Hep1, PLC/PRF5, and immortalized hepatocyte LX-2 cells more than in normal hepatocyte AML-12 cells. MID1IP1 depletion reduced the viability and the number of colonies and also increased sub G1 population and the number of TUNEL-positive cells in HepG2 and Huh7 cells. Consistently, MID1IP1 depletion attenuated pro-poly (ADP-ribose) polymerase (pro-PARP), c-Myc and activated p21, while MID1IP1 overexpression activated c-Myc and reduced p21. Furthermore, MID1IP1 depletion synergistically attenuated c-Myc stability in HepG2 and Huh7 cells. Of note, MID1IP1 depletion upregulated the expression of ribosomal protein L5 or L11, while loss of L5 or L11 rescued c-Myc in MID1IP1 depleted HepG2 and Huh7 cells. Interestingly, tissue array showed that the overexpression of MID1IP1 was colocalized with c-Myc in human HCC tissues, which was verified in HepG2 and Huh7 cells by Immunofluorescence. Notably, depletion of CCR4-NOT2 (CNOT2) with adipogenic activity enhanced the antitumor effect of MID1IP1 depletion to reduce c-Myc, procaspase 3 and pro-PARP in HepG2, Huh7 and HCT116 cells. Overall, these findings provide novel insight that MID1IP1 promotes the growth of liver cancer via colocalization with c-Myc mediated by ribosomal proteins L5 and L11 and CNOT2 as a potent oncogenic molecule.
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Affiliation(s)
- Ji Hoon Jung
- Cancer Molecular Targeted Herbal Research Laboratory, College of Korean Medicine, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Korea; (J.H.J.); (H.-J.L.); (J.-H.K.); (D.Y.S.); (E.I.)
| | - Hyo-Jung Lee
- Cancer Molecular Targeted Herbal Research Laboratory, College of Korean Medicine, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Korea; (J.H.J.); (H.-J.L.); (J.-H.K.); (D.Y.S.); (E.I.)
| | - Ju-Ha Kim
- Cancer Molecular Targeted Herbal Research Laboratory, College of Korean Medicine, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Korea; (J.H.J.); (H.-J.L.); (J.-H.K.); (D.Y.S.); (E.I.)
| | - Deok Yong Sim
- Cancer Molecular Targeted Herbal Research Laboratory, College of Korean Medicine, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Korea; (J.H.J.); (H.-J.L.); (J.-H.K.); (D.Y.S.); (E.I.)
| | - Eunji Im
- Cancer Molecular Targeted Herbal Research Laboratory, College of Korean Medicine, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Korea; (J.H.J.); (H.-J.L.); (J.-H.K.); (D.Y.S.); (E.I.)
| | - Sinae Kim
- Department of Biomedical Sciences, University of Ulsan, College of Medicine, Asan Medical Center, Seoul 05505, Korea; (S.K.); (S.C.)
| | - Suhwan Chang
- Department of Biomedical Sciences, University of Ulsan, College of Medicine, Asan Medical Center, Seoul 05505, Korea; (S.K.); (S.C.)
| | - Sung-Hoon Kim
- Cancer Molecular Targeted Herbal Research Laboratory, College of Korean Medicine, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Korea; (J.H.J.); (H.-J.L.); (J.-H.K.); (D.Y.S.); (E.I.)
- Correspondence: ; Tel.: +82-2-961-9233
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266
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Abbehausen C. Zinc finger domains as therapeutic targets for metal-based compounds - an update. Metallomics 2020; 11:15-28. [PMID: 30303505 DOI: 10.1039/c8mt00262b] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Zinc finger proteins are one of the most abundant families of proteins and present a wide range of structures and functions. The structural zinc ion provides the correct conformation to specifically recognize DNA, RNA and protein sequences. Zinc fingers have essential functions in transcription, protein degradation, DNA repair, cell migration, and others. Recently, reports on the extensive participation of zinc fingers in disease have been published. On the other hand, much information remains to be unravelled as many genomes and proteomes are being reported. A variety of zinc fingers have been identified; however, their functions are still under investigation. Because zinc fingers have identified functions in several diseases, they are being increasingly recognized as drug targets. The replacement of Zn(ii) by another metal ion in zinc fingers is one of the most prominent methods of inhibition. From one side, zinc fingers play roles in the toxicity mechanisms of Ni(ii), Hg(ii), Cd(ii) and others. From the other side, gold, platinum, cobalt, and selenium complexes are amongst the compounds being developed as zinc finger inhibitors for therapy. The main challenge in the design of therapeutic zinc finger inhibitors is to achieve selectivity. Recently, the design of novel compounds and elucidation of the mechanisms of zinc substitution have renewed the possibilities of selective zinc finger inhibition by metal complexes. This review aims to update the status of novel strategies to selectively target zinc finger domains by metal complexes.
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Affiliation(s)
- C Abbehausen
- Institute of Chemistry, University of Campinas - UNICAMP, P.O. Box 6154, CEP 13083-970, Campinas, São Paulo, Brazil.
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267
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Therapeutic Strategies and Biomarkers to Modulate PARP Activity for Targeted Cancer Therapy. Cancers (Basel) 2020; 12:cancers12040972. [PMID: 32295316 PMCID: PMC7226473 DOI: 10.3390/cancers12040972] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 03/31/2020] [Accepted: 04/07/2020] [Indexed: 12/19/2022] Open
Abstract
Poly-(ADP-ribose) polymerase 1 (PARP1) is commonly known for its vital role in DNA damage response and repair. However, its enzymatic activity has been linked to a plethora of physiological and pathophysiological transactions ranging from cellular proliferation, survival and death. For instance, malignancies with BRCA1/2 mutations heavily rely on PARP activity for survival. Thus, the use of PARP inhibitors is a well-established intervention in these types of tumors. However, recent studies indicate that the therapeutic potential of attenuating PARP1 activity in recalcitrant tumors, especially where PARP1 is aberrantly overexpressed and hyperactivated, may extend its therapeutic utility in wider cancer types beyond BRCA-deficiency. Here, we discuss treatment strategies to expand the tumor-selective therapeutic application of PARP inhibitors and novel approaches with predictive biomarkers to perturb NAD+ levels and hyperPARylation that inactivate PARP in recalcitrant tumors. We also provide an overview of genetic alterations that transform non-BRCA mutant cancers to a state of "BRCAness" as potential biomarkers for synthetic lethality with PARP inhibitors. Finally, we discuss a paradigm shift for the use of novel PARP inhibitors outside of cancer treatment, where it has the potential to rescue normal cells from severe oxidative damage during ischemia-reperfusion injury induced by surgery and radiotherapy.
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268
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Nakamura K, Aimono E, Tanishima S, Imai M, Nagatsuma AK, Hayashi H, Yoshimura Y, Nakayama K, Kyo S, Nishihara H. Olaparib Monotherapy for BRIP1-Mutated High-Grade Serous Endometrial Cancer. JCO Precis Oncol 2020; 4:1900368. [PMID: 32923896 PMCID: PMC7446499 DOI: 10.1200/po.19.00368] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Affiliation(s)
- Kohei Nakamura
- Genomics Unit, Keio Cancer Center, Keio University School of Medicine, Tokyo, Japan.,Genomics Unit, Keio Cancer Center, Keio University School of Medicine, Tokyo, Japan
| | - Eriko Aimono
- Genomics Unit, Keio Cancer Center, Keio University School of Medicine, Tokyo, Japan
| | - Shigeki Tanishima
- Department of Biomedical Informatics, Kansai Division, Mitsubishi Space Software, Tokyo, Japan
| | - Mitsuho Imai
- Genomics Unit, Keio Cancer Center, Keio University School of Medicine, Tokyo, Japan
| | | | - Hideyuki Hayashi
- Genomics Unit, Keio Cancer Center, Keio University School of Medicine, Tokyo, Japan
| | - Yuki Yoshimura
- Department of Obstetrics and Gynecology, Shimane University School of Medicine, Izumo, Japan
| | - Kentaro Nakayama
- Department of Obstetrics and Gynecology, Shimane University School of Medicine, Izumo, Japan
| | - Satoru Kyo
- Department of Obstetrics and Gynecology, Shimane University School of Medicine, Izumo, Japan
| | - Hiroshi Nishihara
- Genomics Unit, Keio Cancer Center, Keio University School of Medicine, Tokyo, Japan
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269
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Oxidative Damage in Sporadic Colorectal Cancer: Molecular Mapping of Base Excision Repair Glycosylases in Colorectal Cancer Patients. Int J Mol Sci 2020; 21:ijms21072473. [PMID: 32252452 PMCID: PMC7177219 DOI: 10.3390/ijms21072473] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 03/30/2020] [Accepted: 03/31/2020] [Indexed: 12/12/2022] Open
Abstract
Oxidative stress with subsequent premutagenic oxidative DNA damage has been implicated in colorectal carcinogenesis. The repair of oxidative DNA damage is initiated by lesion-specific DNA glycosylases (hOGG1, NTH1, MUTYH). The direct evidence of the role of oxidative DNA damage and its repair is proven by hereditary syndromes (MUTYH-associated polyposis, NTHL1-associated tumor syndrome), where germline mutations cause loss-of-function in glycosylases of base excision repair, thus enabling the accumulation of oxidative DNA damage and leading to the adenoma-colorectal cancer transition. Unrepaired oxidative DNA damage often results in G:C>T:A mutations in tumor suppressor genes and proto-oncogenes and widespread occurrence of chromosomal copy-neutral loss of heterozygosity. However, the situation is more complicated in complex and heterogeneous disease, such as sporadic colorectal cancer. Here we summarized our current knowledge of the role of oxidative DNA damage and its repair on the onset, prognosis and treatment of sporadic colorectal cancer. Molecular and histological tumor heterogeneity was considered. Our study has also suggested an additional important source of oxidative DNA damage due to intestinal dysbiosis. The roles of base excision repair glycosylases (hOGG1, MUTYH) in tumor and adjacent mucosa tissues of colorectal cancer patients, particularly in the interplay with other factors (especially microenvironment), deserve further attention. Base excision repair characteristics determined in colorectal cancer tissues reflect, rather, a disease prognosis. Finally, we discuss the role of DNA repair in the treatment of colon cancer, since acquired or inherited defects in DNA repair pathways can be effectively used in therapy.
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270
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Pondé N, Wildiers H, Awada A, de Azambuja E, Deliens C, Lago LD. Targeted therapy for breast cancer in older patients. J Geriatr Oncol 2020; 11:380-388. [DOI: 10.1016/j.jgo.2019.05.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 03/25/2019] [Accepted: 05/14/2019] [Indexed: 12/17/2022]
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271
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Keung MY, Wu Y, Badar F, Vadgama JV. Response of Breast Cancer Cells to PARP Inhibitors Is Independent of BRCA Status. J Clin Med 2020; 9:jcm9040940. [PMID: 32235451 PMCID: PMC7231148 DOI: 10.3390/jcm9040940] [Citation(s) in RCA: 68] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2020] [Revised: 03/26/2020] [Accepted: 03/27/2020] [Indexed: 12/12/2022] Open
Abstract
Poly (ADP-ribose) polymerase inhibitors (PARPi) have proven to be beneficial to patients with metastatic breast cancer with BRCA1/2 (BReast CAncer type 1 and type 2 genes) mutations. However, certain PARPi in pre-clinical studies have been shown to inhibit cell growth and promote the death of breast cancer cells lacking mutations in BRCA1/2. Here, we examined the inhibitory potency of 13 different PARPi in 12 breast cancer cell lines with and without BRCA-mutations using cell viability assays. The results showed that 5 of the 8 triple-negative breast cancer (TNBC) cell lines were susceptible to PARPi regardless of the BRCA-status. The estrogen receptor (ER) negative/ human epidermal growth factor receptor 2 (HER2) positive (ER-/HER2+) cells, SKBR3 and JIMT1, showed high sensitivity to Talazoparib. Especially JIMT1, which is known to be resistant to trastuzumab, was responsive to Talazoparib at 0.002 µM. Niraparib, Olaparib, and Rucaparib also demonstrated effective inhibitory potency in both advanced TNBC and ER-/HER2+ cells with and without BRCA-mutations. In contrast, a BRCA-mutant TNBC line, HCC1937, was less sensitive to Talazoparib, Niraparib, Rucaparib, and not responsive to Olaparib. Other PARPi such as UPF1069, NU1025, AZD2461, and PJ34HCl also showed potent inhibitory activity in specific breast cancer cells. Our data suggest that the benefit of PARPi therapy in breast cancer is beyond the BRCA-mutations, and equally effective on metastatic TNBC and ER-/HER2+ breast cancers.
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Affiliation(s)
- Man Yee Keung
- Division of Cancer Research and Training, Charles R. Drew University of Medicine and Science, Los Angeles, CA 90059, USA; (M.Y.K.); (F.B.)
| | - Yanyuan Wu
- Division of Cancer Research and Training, Charles R. Drew University of Medicine and Science, Los Angeles, CA 90059, USA; (M.Y.K.); (F.B.)
- David Geffen UCLA School of Medicine, Jonsson Comprehensive Cancer Center, University of California at Los Angeles, Los Angeles, CA 90095, USA
- Correspondence: (Y.W.); (J.V.V.)
| | - Francesca Badar
- Division of Cancer Research and Training, Charles R. Drew University of Medicine and Science, Los Angeles, CA 90059, USA; (M.Y.K.); (F.B.)
| | - Jaydutt V. Vadgama
- Division of Cancer Research and Training, Charles R. Drew University of Medicine and Science, Los Angeles, CA 90059, USA; (M.Y.K.); (F.B.)
- David Geffen UCLA School of Medicine, Jonsson Comprehensive Cancer Center, University of California at Los Angeles, Los Angeles, CA 90095, USA
- Correspondence: (Y.W.); (J.V.V.)
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272
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Ünlü A, Dinç B. Investigation of the three-dimensional structure and interaction mechanism of poly (ADP-ribose) polymerase 4. BIOTECHNOL BIOTEC EQ 2020. [DOI: 10.1080/13102818.2020.1726208] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Affiliation(s)
- Ayhan Ünlü
- Department of Biophysics, Medical Faculty, Trakya University, Edirne, Turkey
| | - Bircan Dinç
- Department of Biophysics, Medical Faculty, Bahçeşehir University, İstanbul, Turkey
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273
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In Vitro Anti-Prostate Cancer Activity of Two Ebselen Analogues. Pharmaceuticals (Basel) 2020; 13:ph13030047. [PMID: 32192052 PMCID: PMC7151718 DOI: 10.3390/ph13030047] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 03/12/2020] [Accepted: 03/15/2020] [Indexed: 01/26/2023] Open
Abstract
Scientific research has been underway for decades in order to develop an effective anticancer drug, and it has become crucial to find a novel and effective chemotherapeutics in the case of prostate cancer treatment. Ebselen derivatives have been shown to possess a variety of biological activities, including cytostatic and cytotoxic action against tumor cells. In this study, the cytotoxic effect and anticancer mechanism of action of two organoselenium compounds— (N-allyl-1,2-benzisoselenazol-3(2H)-one (N-allyl-BS) and N-(3-methylbutyl)-1,2-benzisoselenazol-3(2H)-one) (N-(3-mb)-BS)—were investigated on two phenotypically different prostate cancer cell lines DU 145 and PC-3. The influence of analyzed compounds on the viability parameter was also assessed on normal prostate cell line PNT1A. The results showed that both organoselenium compounds (OSCs) efficiently inhibited cancer cell proliferation, whereas normal PNT1A cells were less sensitive to the analazyed ebselen analouges. Both OSCs induced G2/M cell cycle arrest and prompted cell death through apoptosis. The detection of cleaved Poly (ADP-ribose) Polymerase (PARP) confirmed this. In addition, N-allyl-BS and N-(3-m)-b-BS increased the level of reactive oxygen species (ROS) formation, however only N-allyl-BS induced DNA damage. Based on our data, we assume that OSCs’ anticancer action can be associated with oxidative stress induction and inactivation of the Akt- dependent signalling pathway. In conclusion, our data demonstrate that ebselen derivatives showed strong cytotoxic efficiency towards prostate cancer cells and may be elucidated as a novel, potent anticancer agent.
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274
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Patel M, Nowsheen S, Maraboyina S, Xia F. The role of poly(ADP-ribose) polymerase inhibitors in the treatment of cancer and methods to overcome resistance: a review. Cell Biosci 2020; 10:35. [PMID: 32180937 PMCID: PMC7065339 DOI: 10.1186/s13578-020-00390-7] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Accepted: 02/23/2020] [Indexed: 02/08/2023] Open
Abstract
Poly(ADP-ribose) polymerase (PARP) inhibitors represent one of the successful novel approaches to targeted cancer treatment. Indeed, the US Food and Drug Administration (FDA) has recently approved PARP inhibitors for the treatment of breast and ovarian cancers. Despite the proven efficacy of these agents, certain challenges remain with their use. Among the most important are primary and secondary resistance. Here, we review the mechanism of action of PARP inhibitors and their ability to exploit certain inherent deficiencies among malignant cells to improve cell killing, with a focus on deficiencies in homologous recombination among cells with BRCA1 and BRCA2 mutations. Moreover, we discuss the different mechanisms of resistance including development of secondary resistance and strategies to overcome them. Finally, we discuss the limitations of novel therapeutic interventions and possible future studies to exploit biochemical pathways in order to improve therapeutic efficacy of PARP inhibitors.
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Affiliation(s)
- Mausam Patel
- 1Department of Radiation Oncology, University of Arkansas for Medical Sciences, 4301 W. Markham St., #771, Little Rock, AR 72205-7199 USA
| | - Somaira Nowsheen
- 2Mayo Clinic Medical Scientist Training Program, Mayo Clinic Alix School of Medicine and Mayo Clinic Graduate School of Biomedical Sciences, Mayo Clinic, Rochester, MN USA
| | - Sanjay Maraboyina
- 1Department of Radiation Oncology, University of Arkansas for Medical Sciences, 4301 W. Markham St., #771, Little Rock, AR 72205-7199 USA
| | - Fen Xia
- 1Department of Radiation Oncology, University of Arkansas for Medical Sciences, 4301 W. Markham St., #771, Little Rock, AR 72205-7199 USA
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275
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Elleuch F, Baril P, Barkallah M, Perche F, Abdelkafi S, Fendri I, Pichon C. Deciphering the Biological Activities of Dunaliella sp. Aqueous Extract from Stressed Conditions on Breast Cancer: from in Vitro to in Vivo Investigations. Int J Mol Sci 2020; 21:E1719. [PMID: 32138292 PMCID: PMC7084689 DOI: 10.3390/ijms21051719] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2020] [Revised: 02/25/2020] [Accepted: 02/27/2020] [Indexed: 02/07/2023] Open
Abstract
In order to harness local resources to improve well-being and human health, we aim in this study to investigate if the microalgae Dunaliella sp. isolated from the Tunisian coastal zone possesses any anticancer activity. Dunaliella sp. was cultured under normal (DSC) or stressed (DSS) conditions and extracted using different procedures. The biological activity assessment was performed on the Triple Negative Breast Cancer (TNBC) using 4T1 murine cells as a model. Results indicate that: (i) aqueous extract was the most cytotoxic compared to ethanolic and hydroalcoholic extracts; (ii) DSS activity was superior to that of DSC. DSS extracts induced apoptosis rather than necrosis, as evidenced by DNA fragmentation, PARP-1 cleavage and caspase-3 activation. Evaluation in an orthotopic TNBC model validated the anticancer activity in vivo. Intratumoral injection of DSS extract resulted in reduced tumor growth and an enhanced immune system activation. On the transcriptional side, the expression level of the immunosuppressive enzyme Arg-1 was decreased, as well as those of NOS-2 and COX-2 genes. These results suggest a potential anticancer activity of Tunisian Dunaliella sp. deserving further attention.
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Affiliation(s)
- Fatma Elleuch
- Laboratoire de Biotechnologie Végétale Appliquée à l’Amélioration des Cultures, Faculty of Sciences of Sfax, University of Sfax, Sfax 3000, Tunisia;
- Centre de Biophysique Moléculaire (CBM), CNRS UPR 4301, 45071 Orleans, France; (P.B.); (F.P.)
| | - Patrick Baril
- Centre de Biophysique Moléculaire (CBM), CNRS UPR 4301, 45071 Orleans, France; (P.B.); (F.P.)
| | - Mohamed Barkallah
- Unité de Biotechnologie des Algues, Ecole Nationale d’Ingénieurs de Sfax, University of Sfax, Sfax 3038, Tunisia; (M.B.); (S.A.)
| | - Federico Perche
- Centre de Biophysique Moléculaire (CBM), CNRS UPR 4301, 45071 Orleans, France; (P.B.); (F.P.)
| | - Slim Abdelkafi
- Unité de Biotechnologie des Algues, Ecole Nationale d’Ingénieurs de Sfax, University of Sfax, Sfax 3038, Tunisia; (M.B.); (S.A.)
| | - Imen Fendri
- Laboratoire de Biotechnologie Végétale Appliquée à l’Amélioration des Cultures, Faculty of Sciences of Sfax, University of Sfax, Sfax 3000, Tunisia;
| | - Chantal Pichon
- Centre de Biophysique Moléculaire (CBM), CNRS UPR 4301, 45071 Orleans, France; (P.B.); (F.P.)
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276
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Francisco AP, Mendes E, Santos AR, Perry MJ. Anticancer Triazenes: from Bioprecursors to Hybrid Molecules. Curr Pharm Des 2020; 25:1623-1642. [PMID: 31244412 DOI: 10.2174/1381612825666190617155749] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Accepted: 05/20/2019] [Indexed: 11/22/2022]
Abstract
Triazenes are a very useful and diverse class of compounds that have been studied for their potential in the treatment of many tumors including brain tumor, leukemia and melanoma. Novel compounds of this class continue to be developed as either anticancer compounds or even with other therapeutic applications. This review focused on several types of triazenes from the simplest ones like 1,3-dialkyl-3-acyltriazenes to the more complex ones like combi-triazenes with an emphasis on how triazenes have been developed as effective antitumor agents.
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Affiliation(s)
- Ana P Francisco
- iMed.ULisboa, Faculty of Pharmacy, Universidade de Lisboa, Lisbon, Portugal
| | - Eduarda Mendes
- iMed.ULisboa, Faculty of Pharmacy, Universidade de Lisboa, Lisbon, Portugal
| | - Ana R Santos
- iMed.ULisboa, Faculty of Pharmacy, Universidade de Lisboa, Lisbon, Portugal
| | - Maria J Perry
- iMed.ULisboa, Faculty of Pharmacy, Universidade de Lisboa, Lisbon, Portugal
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277
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Lisi L, Chiavari M, Ciotti GMP, Lacal PM, Navarra P, Graziani G. DNA inhibitors for the treatment of brain tumors. Expert Opin Drug Metab Toxicol 2020; 16:195-207. [PMID: 32067518 DOI: 10.1080/17425255.2020.1729352] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Introduction: The worldwide incidence of central nervous system (CNS) primary tumors is increasing. Most of the chemotherapeutic agents used for treating these cancer types induce DNA damage, and their activity is affected by the functional status of repair systems involved in the detection or correction of DNA lesions. Unfortunately, treatment of malignant high-grade tumors is still an unmet medical need.Areas covered: We summarize the action mechanisms of the main DNA inhibitors used for the treatment of brain tumors. In addition, studies on new agents or drug combinations investigated for this indication are reviewed, focusing our attention on clinical trials that in the last 3 years have been completed, terminated or are still recruiting patients.Expert opinion: Much still needs to be done to render aggressive CNS tumors curable or at least to transform them from lethal to chronic diseases, as it is possible for other cancer types. Drugs with improved penetration in the CNS, toxicity profile, and activity against primary and recurrent tumors are eagerly needed. Targeted agents with innovative mechanisms of action and ability to harness the cells of the tumor microenvironment against cancer cells represent a promising approach for improving the clinical outcome of CNS tumors.
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Affiliation(s)
- Lucia Lisi
- Department of Safety and Bioethics, Catholic University Medical School, Rome, Italy
| | - Marta Chiavari
- Department of Safety and Bioethics, Catholic University Medical School, Rome, Italy
| | | | - Pedro M Lacal
- Laboratory of Molecular Oncology, IDI-IRCCS, Rome, Italy
| | - Pierluigi Navarra
- Department of Safety and Bioethics, Catholic University Medical School, Rome, Italy.,Department of Safety and Bioethics, Fondazione Policlinico Universitario Agostino Gemelli, Rome, Italy
| | - Grazia Graziani
- Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy
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278
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WEE1 kinase limits CDK activities to safeguard DNA replication and mitotic entry. Mutat Res 2020; 819-820:111694. [PMID: 32120135 DOI: 10.1016/j.mrfmmm.2020.111694] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Revised: 02/10/2020] [Accepted: 02/24/2020] [Indexed: 01/24/2023]
Abstract
Precise execution of the cell division cycle is vital for all organisms. The Cyclin dependent kinases (CDKs) are the main cell cycle drivers, however, their activities must be precisely fine-tuned to ensure orderly cell cycle progression. A major regulatory axis is guarded by WEE1 kinase, which directly phosphorylates and inhibits CDK1 and CDK2. The role of WEE1 in the G2/M cell-cycle phase has been thoroughly investigated, and it is a focal point of multiple clinical trials targeting a variety of cancers in combination with DNA-damaging chemotherapeutic agents. However, the emerging role of WEE1 in S phase has so far largely been neglected. Here, we review how WEE1 regulates cell-cycle progression highlighting the importance of this kinase for proper S phase. We discuss how its function is modulated throughout different cell-cycle stages and provide an overview of how WEE1 levels are regulated. Furthermore, we outline recent clinical trials targeting WEE1 and elaborate on the mechanisms behind the anticancer efficacy of WEE1 inhibition. Finally, we consider novel biomarkers that may benefit WEE1-inhibition approaches in the clinic.
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279
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Tang L, Chen R, Xu X. Synthetic lethality: A promising therapeutic strategy for hepatocellular carcinoma. Cancer Lett 2020; 476:120-128. [PMID: 32070778 DOI: 10.1016/j.canlet.2020.02.016] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Revised: 02/11/2020] [Accepted: 02/12/2020] [Indexed: 12/24/2022]
Abstract
Hepatocellular carcinoma (HCC), the main cause of liver cancer-related death, is one of the main cancers in terms of incidence and mortality. However, HCC is difficult to target and develops strong drug resistance. Therefore, a new treatment strategy is urgently needed. The clinical application of the concept of synthetic lethality in recent years provides a new therapeutic direction for the accurate treatment of HCC. Here, we introduce the concept of synthetic lethality, the screening used to study synthetic lethality, and the identified and potential genetic interactions that induce synthetic lethality in HCC. In addition, we propose opportunities and challenges for translating synthetic lethal interactions to the clinical treatment of HCC.
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Affiliation(s)
- Linsong Tang
- Department of Hepatobiliary and Pancreatic Surgery, Department of Surgery, First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, China; NHFPC Key Lab of Combined Multi-Organ Transplantation, Ministry of Public Health, Hangzhou, 310003, China.
| | - Ronggao Chen
- Department of Hepatobiliary and Pancreatic Surgery, Department of Surgery, First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, China; NHFPC Key Lab of Combined Multi-Organ Transplantation, Ministry of Public Health, Hangzhou, 310003, China.
| | - Xiao Xu
- Department of Hepatobiliary and Pancreatic Surgery, Department of Surgery, First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, China; NHFPC Key Lab of Combined Multi-Organ Transplantation, Ministry of Public Health, Hangzhou, 310003, China.
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280
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Mayfield AB, Metternich JB, Trotta AH, Jacobsen EN. Stereospecific Furanosylations Catalyzed by Bis-thiourea Hydrogen-Bond Donors. J Am Chem Soc 2020; 142:4061-4069. [PMID: 32013410 DOI: 10.1021/jacs.0c00335] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
We report a new method for stereoselective O-furanosylation reactions promoted by a precisely tailored bis-thiourea hydrogen-bond-donor catalyst. Furanosyl donors outfitted with an anomeric dialkylphosphate leaving group undergo substitution with high anomeric selectivity, providing access to the challenging 1,2-cis substitution pattern with a range of alcohol acceptors. A variety of stereochemically distinct, benzyl-protected glycosyl donors were engaged successfully as substrates. Mechanistic studies support a stereospecific mechanism in which rate-determining substitution occurs from a catalyst-donor resting-state complex.
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Affiliation(s)
- Andrew B Mayfield
- Department of Chemistry & Chemical Biology , Harvard University , Cambridge , Massachusetts 02138 , United States
| | - Jan B Metternich
- Department of Chemistry & Chemical Biology , Harvard University , Cambridge , Massachusetts 02138 , United States
| | - Adam H Trotta
- Department of Chemistry & Chemical Biology , Harvard University , Cambridge , Massachusetts 02138 , United States
| | - Eric N Jacobsen
- Department of Chemistry & Chemical Biology , Harvard University , Cambridge , Massachusetts 02138 , United States
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281
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Kim DS, Challa S, Jones A, Kraus WL. PARPs and ADP-ribosylation in RNA biology: from RNA expression and processing to protein translation and proteostasis. Genes Dev 2020; 34:302-320. [PMID: 32029452 PMCID: PMC7050490 DOI: 10.1101/gad.334433.119] [Citation(s) in RCA: 88] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
In this review, Kim et al. discuss the importance of PARP family members and ADPRylation in gene regulation, mRNA processing, and protein abundance. ADP-ribosylation (ADPRylation) is a posttranslational modification of proteins discovered nearly six decades ago, but many important questions remain regarding its molecular functions and biological roles, as well as the activity of the ADP-ribose (ADPR) transferase enzymes (PARP family members) that catalyze it. Growing evidence indicates that PARP-mediated ADPRylation events are key regulators of the protein biosynthetic pathway, leading from rDNA transcription and ribosome biogenesis to mRNA synthesis, processing, and translation. In this review we describe the role of PARP proteins and ADPRylation in all facets of this pathway. PARP-1 and its enzymatic activity are key regulators of rDNA transcription, which is a critical step in ribosome biogenesis. An emerging role of PARPs in alternative splicing of mRNAs, as well as direct ADPRylation of mRNAs, highlight the role of PARP members in RNA processing. Furthermore, PARP activity, stimulated by cellular stresses, such as viral infections and ER stress, leads to the regulation of mRNA stability and protein synthesis through posttranscriptional mechanisms. Dysregulation of PARP activity in these processes can promote disease states. Collectively, these results highlight the importance of PARP family members and ADPRylation in gene regulation, mRNA processing, and protein abundance. Future studies in these areas will yield new insights into the fundamental mechanisms and a broader utility for PARP-targeted therapeutic agents.
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Affiliation(s)
- Dae-Seok Kim
- Laboratory of Signaling and Gene Regulation, Cecil H. and Ida Green Center for Reproductive Biology Sciences, University of Texas Southwestern Medical Center, Dallas, Texas 75390, USA.,Division of Basic Research, Department of Obstetrics and Gynecology, University of Texas Southwestern Medical Center, Dallas, Texas 75390, USA
| | - Sridevi Challa
- Laboratory of Signaling and Gene Regulation, Cecil H. and Ida Green Center for Reproductive Biology Sciences, University of Texas Southwestern Medical Center, Dallas, Texas 75390, USA.,Division of Basic Research, Department of Obstetrics and Gynecology, University of Texas Southwestern Medical Center, Dallas, Texas 75390, USA
| | - Aarin Jones
- Laboratory of Signaling and Gene Regulation, Cecil H. and Ida Green Center for Reproductive Biology Sciences, University of Texas Southwestern Medical Center, Dallas, Texas 75390, USA.,Division of Basic Research, Department of Obstetrics and Gynecology, University of Texas Southwestern Medical Center, Dallas, Texas 75390, USA.,Program in Genetics, Development, and Disease, Graduate School of Biomedical Sciences, University of Texas Southwestern Medical Center, Dallas, Texas 75390, USA
| | - W Lee Kraus
- Laboratory of Signaling and Gene Regulation, Cecil H. and Ida Green Center for Reproductive Biology Sciences, University of Texas Southwestern Medical Center, Dallas, Texas 75390, USA.,Division of Basic Research, Department of Obstetrics and Gynecology, University of Texas Southwestern Medical Center, Dallas, Texas 75390, USA.,Program in Genetics, Development, and Disease, Graduate School of Biomedical Sciences, University of Texas Southwestern Medical Center, Dallas, Texas 75390, USA
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282
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Chinopoulos C. Acute sources of mitochondrial NAD + during respiratory chain dysfunction. Exp Neurol 2020; 327:113218. [PMID: 32035071 DOI: 10.1016/j.expneurol.2020.113218] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 01/24/2020] [Accepted: 01/30/2020] [Indexed: 01/07/2023]
Abstract
It is a textbook definition that in the absence of oxygen or inhibition of the mitochondrial respiratory chain by pharmacologic or genetic means, hyper-reduction of the matrix pyridine nucleotide pool ensues due to impairment of complex I oxidizing NADH, leading to reductive stress. However, even under these conditions, the ketoglutarate dehydrogenase complex (KGDHC) is known to provide succinyl-CoA to succinyl-CoA ligase, thus supporting mitochondrial substrate-level phosphorylation (mSLP). Mindful that KGDHC is dependent on provision of NAD+, hereby sources of acute NADH oxidation are reviewed, namely i) mitochondrial diaphorases, ii) reversal of mitochondrial malate dehydrogenase, iii) reversal of the mitochondrial isocitrate dehydrogenase as it occurs under acidic conditions, iv) residual complex I activity and v) reverse operation of the malate-aspartate shuttle. The concept of NAD+ import through the inner mitochondrial membrane as well as artificial means of manipulating matrix NAD+/NADH are also discussed. Understanding the above mechanisms providing NAD+ to KGDHC thus supporting mSLP may assist in dampening mitochondrial dysfunction underlying neurological disorders encompassing impairment of the electron transport chain.
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Affiliation(s)
- Christos Chinopoulos
- Department of Medical Biochemistry, Semmelweis University, Tuzolto st. 37-47, Budapest 1094, Hungary.
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283
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Goud NS, Joshi RK, Bharath RD, Kumar P. Fluorine-18: A radionuclide with diverse range of radiochemistry and synthesis strategies for target based PET diagnosis. Eur J Med Chem 2020; 187:111979. [DOI: 10.1016/j.ejmech.2019.111979] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Revised: 12/16/2019] [Accepted: 12/16/2019] [Indexed: 12/25/2022]
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284
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Korotchkina L, Kazyulkin D, Komarov PG, Polinsky A, Andrianova EL, Joshi S, Gupta M, Vujcic S, Kononov E, Toshkov I, Tian Y, Krasnov P, Chernov MV, Veith J, Antoch MP, Middlemiss S, Somers K, Lock RB, Norris MD, Henderson MJ, Haber M, Chernova OB, Gudkov AV. OT-82, a novel anticancer drug candidate that targets the strong dependence of hematological malignancies on NAD biosynthesis. Leukemia 2020; 34:1828-1839. [PMID: 31896781 DOI: 10.1038/s41375-019-0692-5] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Revised: 11/23/2019] [Accepted: 12/06/2019] [Indexed: 02/06/2023]
Abstract
Effective treatment of some types of cancer can be achieved by modulating cell lineage-specific rather than tumor-specific targets. We conducted a systematic search for novel agents selectively toxic to cells of hematopoietic origin. Chemical library screenings followed by hit-to-lead optimization identified OT-82, a small molecule with strong efficacy against hematopoietic malignancies including acute myeloblastic and lymphoblastic adult and pediatric leukemias, erythroleukemia, multiple myeloma, and Burkitt's lymphoma in vitro and in mouse xenograft models. OT-82 was also more toxic towards patients-derived leukemic cells versus healthy bone marrow-derived hematopoietic precursors. OT-82 was shown to induce cell death by inhibiting nicotinamide phosphoribosyltransferase (NAMPT), the rate-limiting enzyme in the salvage pathway of NAD synthesis. In mice, optimization of OT-82 dosing and dietary niacin further expanded the compound's therapeutic index. In toxicological studies conducted in mice and nonhuman primates, OT-82 showed no cardiac, neurological or retinal toxicities observed with other NAMPT inhibitors and had no effect on mouse aging or longevity. Hematopoietic and lymphoid organs were identified as the primary targets for dose limiting toxicity of OT-82 in both species. These results reveal strong dependence of neoplastic cells of hematopoietic origin on NAMPT and introduce OT-82 as a promising candidate for the treatment of hematological malignancies.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | - Jean Veith
- Roswell Park Comprehensive Cancer Center, Buffalo, NY, USA
| | | | | | | | | | - Murray D Norris
- Children's Cancer Institute, Sydney, NSW, Australia.,University of New South Wales Centre for Childhood Cancer Research, Sydney, NSW, Australia
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285
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Agnihotri N, Narota A, Kumar S, Kaur R, Kaur S, Aggarwal R. Althea rosea seed extract ameliorates 1,2-dimethylhydrazine induced preneoplastic lesions in mouse model of colon cancer by modulating oxidative stress and inflammation. Pharmacogn Mag 2020. [DOI: 10.4103/pm.pm_559_19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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286
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Aðalsteinsson HM, Lima FA, Galuppo C, Abbehausen C. Evaluation of cobalt complexes with tripod ligands for zinc finger targeting. Dalton Trans 2020; 49:16143-16153. [DOI: 10.1039/d0dt00067a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
We report the ability of CoII and CoIII complexes of tri(2-pyridylmethyl)amine and N,N-di(2-pyridylmethyl)glycinate to disrupt zinc fingers.
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Affiliation(s)
| | - Frederico A. Lima
- European X-Ray Free-Electron Laser Facility GmbH
- 22869 Schenefeld
- Germany
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287
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Abstract
The second most common type of tumor worldwide is prostate cancer (PCa). Certain genetic factors contribute to a risk of developing PCa of as much as 40%. BRCA1 and BRCA2 mutations have linked with an increased risk for breast, ovarian, and PCa. However, BRCA2 is the most common gene found altered in early-onset of PCa in males younger than 65. BRCA2 mutation has a higher chance of developing an advanced stage of the disease, resulting in short survival time. This review aimed to describe the genetic changes in BRCA2 that contribute to the risk of PCa, to define its role in the early diagnosis in a man with a strong family history, and to outline the purpose of genetic testing and counseling. Also, the review summarizes the impact of BRCA2 gene mutation in localized PCa, and the treatment strategies have used for PCa patients with a BRCA2 modification.
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Affiliation(s)
- Noor N Junejo
- Department of Urology, King Faisal Specialist Hospital and Research Centre, Riyadh, Kingdom of Saudi Arabia. E-mail.
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288
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Wang J, Li H, He G, Chu Z, Peng K, Ge Y, Zhu Q, Xu Y. Discovery of Novel Dual Poly(ADP-ribose)polymerase and Phosphoinositide 3-Kinase Inhibitors as a Promising Strategy for Cancer Therapy. J Med Chem 2019; 63:122-139. [PMID: 31846325 DOI: 10.1021/acs.jmedchem.9b00622] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Concomitant inhibition of PARP and PI3K pathways has been recognized as a promising strategy for cancer therapy, which may expand the clinical utility of PARP inhibitors. Herein, we report the discovery of dual PARP/PI3K inhibitors that merge the pharmacophores of PARP and PI3K inhibitors. Among them, compound 15 stands out as the most promising candidate with potent inhibitory activities against both PARP-1/2 and PI3Kα/δ with pIC50 values greater than 8. Compound 15 displayed superior antiproliferative profiles against both BRCA-deficient and BRCA-proficient cancer cells in cellular assays. The prominent synergistic effects produced by the concomitant inhibition of the two targets were elucidated by comprehensive biochemical and cellular mechanistic studies. In vivo, 15 showed more efficacious antitumor activity than the corresponding drug combination (Olaparib + BKM120) in the MDA-MB-468 xenograft model with a tumor growth inhibitory rate of 73.4% without causing observable toxic effects. All of the results indicate that 15, a first potent dual PARP/PI3K inhibitor, is a highly effective anticancer compound.
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289
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Nakamoto MY, Rudolph J, Wuttke DS, Luger K. Nonspecific Binding of RNA to PARP1 and PARP2 Does Not Lead to Catalytic Activation. Biochemistry 2019; 58:5107-5111. [PMID: 31829559 DOI: 10.1021/acs.biochem.9b00986] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Poly(ADP-ribose) polymerases 1 and 2 (PARP1 and PARP2, respectively), upon binding damaged DNA, become activated to add long chains of poly(ADP-ribose) (PAR) to themselves and other nuclear proteins. This activation is an essential part of the DNA damage response. The PAR modifications recruit the DNA repair machinery to sites of DNA damage and result in base excision and single-strand break repair, homologous recombination, nucleotide excision repair, and alternative nonhomologous end joining. More recently, both PARP1 and PARP2 have been shown to bind to or be activated by RNA, a property that could interfere with the function of PARP1 and PARP2 in the response to DNA damage or lead to necrosis by depletion of cellular NAD+. We have quantitatively evaluated the in vitro binding of a variety of RNAs to PARP1 and PARP2 and queried the ability of these RNAs to switch on enzymatic activity. We find that while both proteins bind RNAs without specificity toward sequence or structure, their interaction with RNA does not lead to auto-PARylation. Thus, although PARP1 and PARP2 are promiscuous with respect to activation by DNA, they both demonstrate exquisite selectivity against activation by RNA.
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Affiliation(s)
- Meagan Y Nakamoto
- Department of Biochemistry , University of Colorado, Boulder , Boulder , Colorado 80309 , United States
| | - Johannes Rudolph
- Department of Biochemistry , University of Colorado, Boulder , Boulder , Colorado 80309 , United States
| | - Deborah S Wuttke
- 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
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290
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Damale MG, Patil R, Ansari SA, Alkahtani HM, Almehizia AA, Pathan SK, Chhajed S, Sangshetti J. Identification of dual site inhibitors of tankyrase through virtual screening of protein-ligand interaction fingerprint (PLIF)–derived pharmacophore models, molecular dynamics, and ADMET studies. Struct Chem 2019. [DOI: 10.1007/s11224-019-01467-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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291
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Comparison of PARPis with Angiogenesis Inhibitors and Chemotherapy for Maintenance in Ovarian Cancer: A Network Meta-Analysis. Adv Ther 2019; 36:3368-3380. [PMID: 31599396 DOI: 10.1007/s12325-019-01106-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Indexed: 02/07/2023]
Abstract
INTRODUCTION Seventy-five percent of ovarian cancer would relapse within 18-28 months after platinum-base chemotherapy. Evidence suggests that maintenance chemotherapy is effective in prolonging remission. Recent target therapies such as poly(ADP-ribose) polymerase inhibitors (PARPis) and angiogenesis inhibitors (AIs) are known to ease burden and recurrence of ovarian cancer. There is limited data for head-to-head comparison of PARPis, AIs, and chemotherapeutic agents (CTAs) as maintenance treatment. This network meta-analysis thus assessed the effectiveness and toxicity of these three maintenance therapies in patients with ovarian cancer. METHODS We searched relevant sources (PubMed, EMBASE) to identify randomized controlled trials assessing efficacy and safety of maintenance therapy in patients with ovarian cancer. Primary outcome was progression-free survival (PFS) as assessed by blinded review; safety and tolerability were secondary outcomes. A network meta-analysis to compare three drug classes was performed using statistical software R. RESULTS We included 24 trials (11,366 patients) assessing efficacy and safety of PARPis (n = 4), AIs (n = 12), and CTAs (n = 8). PARPis [hazard ratio (HR) 0.64; 95% credible intervals (CrI) 0.55-0.73] and AIs (HR 0.87; 95% CrI 0.81-0.93) showed significant improvement in PFS compared to placebo but not CTA (HR 1.00; 95% CrI 0.86-1.15). PARPis showed significant improvement in PFS compared to AIs (HR 0.73; 95% CrI 0.63-0.86) and CTA (HR 0.64; 95% CrI 0.52-0.78). Adverse events (AEs) leading to treatment discontinuation and dose reduction were lower in PARPis [incidence rate ratio (IRR) 0.60; CrI 0.31-1.18 and IRR 0.73, 95% CrI 0.50-1.06, respectively] compared to AIs, but the differences were not significant. CONCLUSION PARPi as maintenance treatment improved PFS in ovarian cancer and was relatively safer in terms of implications caused by AEs when compared to AIs. This network meta-analysis provides valuable evidence and significant insights into treatment of ovarian cancer.
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292
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Chiral resolution of a caged xanthone and evaluation across a broad spectrum of breast cancer subtypes. Bioorg Chem 2019; 93:103303. [DOI: 10.1016/j.bioorg.2019.103303] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 08/15/2019] [Accepted: 09/17/2019] [Indexed: 12/29/2022]
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293
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Pearson SJ, Elswood J, Barhoumi R, Ming-Whitfield B, Rijnkels M, Porter WW. Loss of SIM2s inhibits RAD51 binding and leads to unresolved replication stress. Breast Cancer Res 2019; 21:125. [PMID: 31775907 PMCID: PMC6882179 DOI: 10.1186/s13058-019-1207-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Accepted: 10/01/2019] [Indexed: 12/17/2022] Open
Abstract
Background Mutations in genes associated with homologous recombination (HR) increase an individual’s risk of developing triple-negative breast cancer (TNBC). Although known for their role in repairing dsDNA breaks, HR repair elements also stabilize and restart stalled replication forks. Essential to these functions are RAD51 and its paralogs, each of which has a unique role in preventing replication fork collapse and restart. However, progress toward understanding the regulation of these factors has been slow. With such a pivotal role in the maintenance of genomic integrity, furthering our understanding of this pathway through the discovery of new factors involved in HR is important. Recently, we showed that singleminded-2s (SIM2s) is stabilized in response to dsDNA breaks and is required for effective HR. Methods Initial analysis of the effect loss of SIM2s has on replication stress resolution was conducted using DNA combing assays in established breast cancer cell lines. Further analysis was conducted via immunostaining to determine the effect loss of SIM2s has on factor recruitment. In vivo confirmation was achieved through the use of a mammary epithelial cell conditional knockout mouse model before SIM2s’ role in RAD51 recruitment was determined by immunoblotting. Results Here, we show loss of SIM2s decreases replication fork stability, leading to fork collapse in response to genotoxic stress. Furthermore, loss of SIM2s results in aberrant separation of sister chromatids during mitosis, which has been previously shown to result in chromosomal fragmentation and aneuploidy. Interestingly, loss of SIM2s was shown to result in failure of RAD51 to localize to sites of replication stress in both breast cancer cell lines and primary mammary epithelial cells. Finally, we observed SIM2 is stabilized in response to genotoxic stress and interacts with RAD51, which is necessary for RAD51-DNA binding. Conclusions Together, these results show a role for SIM2s in the resolution of replication stress and further characterize the necessity of SIM2s for effective RAD51 loading in response to DNA damage or stress, ultimately promoting genomic integrity and thus preventing the accumulation of cancer-promoting mutations.
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Affiliation(s)
- Scott J Pearson
- Department of Integrative Biosciences, College of Veterinary Medicine, Texas A&M University, College Station, TX, 77843, USA
| | - Jessica Elswood
- Department of Integrative Biosciences, College of Veterinary Medicine, Texas A&M University, College Station, TX, 77843, USA
| | - Rola Barhoumi
- Department of Integrative Biosciences, College of Veterinary Medicine, Texas A&M University, College Station, TX, 77843, USA
| | - Brittini Ming-Whitfield
- Department of Molecular and Cellular Medicine, Texas A&M University, College Station, TX, 77843, USA
| | - Monique Rijnkels
- Department of Integrative Biosciences, College of Veterinary Medicine, Texas A&M University, College Station, TX, 77843, USA
| | - Weston W Porter
- Department of Integrative Biosciences, College of Veterinary Medicine, Texas A&M University, College Station, TX, 77843, USA. .,Present Address: Veterinary Integrative Biosciences, Texas A&M University, College of Veterinary Medicine, College Station, TX, 77843, USA.
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294
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Ferreira HJ, de Almeida EM, da Silva WMB, Teixeira EH, do Nascimento Neto LG. Molecular Mechanisms Involved in the Antitumor Activity of Isolated Lectins from Marine Organisms: A Systematic Review. Curr Drug Targets 2019; 21:616-625. [PMID: 31763966 DOI: 10.2174/1389450120666191122113850] [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: 08/04/2019] [Revised: 09/27/2019] [Accepted: 11/04/2019] [Indexed: 11/22/2022]
Abstract
INTRODUCTION Tumor cells may present several molecular alterations that favor their malignancy, among which there is the expression of tumor-related antigens, such as truncated T-glycans, Thomsen-nouvelle, sialyl-Lewis X and sialyl Tn, which may help in the diagnosis and treatment using specific target molecules. Lectins are ubiquitous proteins capable of interacting with specific carbohydrates. Lectins isolated from marine organisms have important characteristics such as low immunogenicity and can bind to complex glycans compared to plant lectins. OBJECTIVE This work evaluated, through a systematic review, the molecular mechanisms of antitumor activity of lectins isolated from marine organisms. METHODOLOGY The Pubmed, Lilacs, Science Direct, Wiley and Scopus databases were reviewed using the descriptors: marine lectin and cancer. Articles in English, published between January 2008 and December 2018, which proposed the molecular mechanisms of anticancer activity of lectins from marine organisms were eligible for the study. RESULTS 17 articles were eligible. The lectins showed promising performance against cancer cells, presenting specific cytotoxicity for some types of malignant cells. The articles presented several lectins specific to different carbohydrates, modulating: pro and anti-apoptotic proteins, transcription factor E2F-1, via mitogen-activated protein kinase. In addition, exogenous lectin expression in cancer cells has been shown to be a promising way to treat cancer. CONCLUSION This review showed the various studies that described the molecular mechanisms caused by marine lectins with antineoplastic potential. This knowledge is relevant for the development and use of the next generations of lectins isolated from marine organisms, supporting their potential in cancer treatment.
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Affiliation(s)
- Hugo Jefferson Ferreira
- Biomedicine College, Christus University Center, Fortaleza - CE, Brazil.,Integrated Laboratory of Biomolecules (LIBS), Federal University of Ceara, Department of Pathology and Forensic Medicine, 60430-160, Fortaleza, CE, Brazil
| | - Evandro Moreira de Almeida
- Biomedicine College, Christus University Center, Fortaleza - CE, Brazil.,Integrated Laboratory of Biomolecules (LIBS), Federal University of Ceara, Department of Pathology and Forensic Medicine, 60430-160, Fortaleza, CE, Brazil
| | | | - Edson Holanda Teixeira
- Integrated Laboratory of Biomolecules (LIBS), Federal University of Ceara, Department of Pathology and Forensic Medicine, 60430-160, Fortaleza, CE, Brazil
| | - Luiz Gonzaga do Nascimento Neto
- Integrated Laboratory of Biomolecules (LIBS), Federal University of Ceara, Department of Pathology and Forensic Medicine, 60430-160, Fortaleza, CE, Brazil.,Federal Institute of Education, Science and Technology of Ceará, Limoeiro do Norte Campus, 62930-000, Limoeiro do Norte, Ceara, Brazil
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295
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NAD + Depletion Triggers Macrophage Necroptosis, a Cell Death Pathway Exploited by Mycobacterium tuberculosis. Cell Rep 2019; 24:429-440. [PMID: 29996103 DOI: 10.1016/j.celrep.2018.06.042] [Citation(s) in RCA: 120] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Revised: 05/05/2018] [Accepted: 06/08/2018] [Indexed: 12/19/2022] Open
Abstract
Mycobacterium tuberculosis (Mtb) kills infected macrophages by inhibiting apoptosis and promoting necrosis. The tuberculosis necrotizing toxin (TNT) is a secreted nicotinamide adenine dinucleotide (NAD+) glycohydrolase that induces necrosis in infected macrophages. Here, we show that NAD+ depletion by TNT activates RIPK3 and MLKL, key mediators of necroptosis. Notably, Mtb bypasses the canonical necroptosis pathway since neither TNF-α nor RIPK1 are required for macrophage death. Macrophage necroptosis is associated with depolarized mitochondria and impaired ATP synthesis, known hallmarks of Mtb-induced cell death. These results identify TNT as the main trigger of necroptosis in Mtb-infected macrophages. Surprisingly, NAD+ depletion itself was sufficient to trigger necroptosis in a RIPK3- and MLKL-dependent manner by inhibiting the NAD+ salvage pathway in THP-1 cells or by TNT expression in Jurkat T cells. These findings suggest avenues for host-directed therapies to treat tuberculosis and other infectious and age-related diseases in which NAD+ deficiency is a pathological factor.
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296
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Lai KC, Chueh FS, Hsiao YT, Cheng ZY, Lien JC, Liu KC, Peng SF, Chung JG. Gefitinib and curcumin-loaded nanoparticles enhance cell apoptosis in human oral cancer SAS cells in vitro and inhibit SAS cell xenografted tumor in vivo. Toxicol Appl Pharmacol 2019; 382:114734. [DOI: 10.1016/j.taap.2019.114734] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Revised: 08/01/2019] [Accepted: 08/25/2019] [Indexed: 12/24/2022]
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297
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Sharifi-Rad J, Ozleyen A, Boyunegmez Tumer T, Oluwaseun Adetunji C, El Omari N, Balahbib A, Taheri Y, Bouyahya A, Martorell M, Martins N, Cho WC. Natural Products and Synthetic Analogs as a Source of Antitumor Drugs. Biomolecules 2019; 9:E679. [PMID: 31683894 PMCID: PMC6920853 DOI: 10.3390/biom9110679] [Citation(s) in RCA: 97] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Revised: 10/26/2019] [Accepted: 10/27/2019] [Indexed: 02/06/2023] Open
Abstract
Cancer is a heterogeneous disease and one of the major issues of health concern, especially for the public health system globally. Nature is a source of anticancer drugs with abundant pool of diverse chemicals and pharmacologically active compounds. In recent decade, some natural products and synthetic analogs have been investigated for the cancer treatment. This article presents the utilization of natural products as a source of antitumor drugs.
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Affiliation(s)
- Javad Sharifi-Rad
- Zabol Medicinal Plants Research Center, Zabol University of Medical Sciences, Zabol 61615-585, Iran.
| | - Adem Ozleyen
- Graduate Program of Biomolecular Sciences, Institute of Natural and Applied Sciences, Canakkale Onsekiz Mart University, Canakkale 17020, Turkey.
| | - Tugba Boyunegmez Tumer
- Department of Molecular Biology and Genetics, Faculty of Arts and Science, Canakkale Onsekiz Mart University, Canakkale 17020, Turkey.
| | - Charles Oluwaseun Adetunji
- Applied Microbiology, Biotechnology and Nanotechnology Laboratory, Department of Microbiology, Edo University, Iyamho, Edo State 300271, Nigeria.
| | - Nasreddine El Omari
- Laboratory of Histology, Embryology and Cytogenetic, Faculty of Medicine and Pharmacy, Mohammed V University, Rabat 10100, Morocco.
| | - Abdelaali Balahbib
- Laboratory of Zoology and General Biology, Faculty of Sciences, Mohammed V University, Rabat 10106, Morocco.
| | - Yasaman Taheri
- Phytochemistry Research Center, Shahid Beheshti University of Medical Sciences, Tehran 1991953381, Iran.
- Department of Pharmacology and Toxicology, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran 11369, Iran.
| | - Abdelhakim Bouyahya
- Laboratory of Human Pathologies Biology, Department of Biology, Faculty of Sciences, and Genomic Center of Human Pathologies, Faculty of Medicine and Pharmacy, Mohammed V University, Rabat 10106, Morocco.
| | - Miquel Martorell
- Department of Nutrition and Dietetics, Faculty of Pharmacy, University of Concepcion, Concepcion 4070386, Chile.
- Universidad de Concepción, Unidad de Desarrollo Tecnológico, UDT, Concepcion 4070386, Chile.
| | - Natália Martins
- Faculty of Medicine, University of Porto, Alameda Prof. Hernâni Monteiro, 4200-319 Porto, Portugal.
- Institute for Research and Innovation in Health (i3S), University of Porto, 4200-135 Porto, Portugal.
| | - William C Cho
- Department of Clinical Oncology, Queen Elizabeth Hospital, Hong Kong, China.
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298
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Peters XQ, Malinga TH, Agoni C, Olotu FA, Soliman MES. Zoning in on Tankyrases: A Brief Review on the Past, Present and Prospective Studies. Anticancer Agents Med Chem 2019; 19:1920-1934. [PMID: 31648650 DOI: 10.2174/1871520619666191019114321] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2019] [Revised: 06/29/2019] [Accepted: 07/17/2019] [Indexed: 12/16/2022]
Abstract
BACKGROUND Tankyrases are known for their multifunctionalities within the poly(ADPribose) polymerases family and playing vital roles in various cellular processes which include the regulation of tumour suppressors. Tankyrases, which exist in two isoforms; Tankyrase 1 and 2, are highly homologous and an integral part of the Wnt β -catenin pathway that becomes overly dysregulated when hijacked by pro-carcinogenic machineries. METHODS In this review, we cover the distinct roles of the Tankyrase isoforms and their involvement in the disease pathogenesis. Also, we provide updates on experimentally and computationally derived antagonists of Tankyrase whilst highlighting the precedence of integrative computer-aided drug design methods towards the discovery of selective inhibitors. RESULTS Despite the high prospects embedded in the therapeutic targeting and blockade of Tankyrase isoforms, the inability of small molecule inhibitors to achieve selective targeting has remained a major setback, even until date. This explains numerous incessant drug design efforts geared towards the development of highly selective inhibitors of the respective Tankyrase isoforms since they mediate distinct aberrancies in disease progression. Therefore, considering the setbacks of conventional drug design methods, can computer-aided approaches actually save the day? CONCLUSION The implementation of computer-aided drug design techniques in Tankyrase research could help complement experimental methods and facilitate ligand/structure-based design and discovery of small molecule inhibitors with enhanced selectivity.
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Affiliation(s)
- Xylia Q Peters
- Molecular Bio-computation and Drug Design Laboratory, School of Health Sciences, University of KwaZulu-Natal, Westville Campus, Durban 4001, South Africa
| | - Thembeka H Malinga
- Molecular Bio-computation and Drug Design Laboratory, School of Health Sciences, University of KwaZulu-Natal, Westville Campus, Durban 4001, South Africa
| | - Clement Agoni
- Molecular Bio-computation and Drug Design Laboratory, School of Health Sciences, University of KwaZulu-Natal, Westville Campus, Durban 4001, South Africa
| | - Fisayo A Olotu
- Molecular Bio-computation and Drug Design Laboratory, School of Health Sciences, University of KwaZulu-Natal, Westville Campus, Durban 4001, South Africa
| | - Mahmoud E S Soliman
- Molecular Bio-computation and Drug Design Laboratory, School of Health Sciences, University of KwaZulu-Natal, Westville Campus, Durban 4001, South Africa
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299
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Wen DT, Zheng L, Li JX, Cheng D, Liu Y, Lu K, Hou WQ. Endurance exercise resistance to lipotoxic cardiomyopathy is associated with cardiac NAD +/dSIR2/ PGC-1α pathway activation in old Drosophila. Biol Open 2019; 8:bio044719. [PMID: 31624074 PMCID: PMC6826281 DOI: 10.1242/bio.044719] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Accepted: 09/23/2019] [Indexed: 12/17/2022] Open
Abstract
Lipotoxic cardiomyopathy is caused by excessive lipid accumulation in myocardial cells and it is a form of cardiac dysfunction. Cardiac PGC-1α overexpression prevents lipotoxic cardiomyopathy induced by a high-fat diet (HFD). The level of NAD+ and Sir2 expression upregulate the transcriptional activity of PGC-1α. Exercise improves cardiac NAD+ level and PGC-1α activity. However, the relationship between exercise, NAD+/dSIR2/PGC-1α pathway and lipotoxic cardiomyopathy remains unknown. In this study, flies were fed a HFD and exercised. The heart dSir2 gene was specifically expressed or knocked down by UAS/hand-Gal4 system. The results showed that either a HFD or dSir2 knockdown remarkably increased cardiac TG level and d FAS expression, reduced heart fractional shortening and diastolic diameter, increased arrhythmia index, and decreased heart NAD+ level, dSIR2 protein, dSir2 and PGC-1α expression levels. Contrarily, either exercise or dSir2 overexpression remarkably reduced heart TG level, dFAS expression and arrhythmia index, and notably increased heart fractional shortening, diastolic diameter, NAD+ level, dSIR2 level, and heart dSir2 and PGC-1α expression. Therefore, we declared that exercise training could improve lipotoxic cardiomyopathy induced by a HFD or cardiac dSir2 knockdown in old Drosophila The NAD+/dSIR2/PGC-1α pathway activation was an important molecular mechanism of exercise resistance against lipotoxic cardiomyopathy.
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Affiliation(s)
- Deng-Tai Wen
- Key Laboratory of Physical Fitness and Exercise Rehabilitation of Hunan Province, Hunan Normal University, Changsha 410012, Hunan Province, China
- Department of Sports Science, Ludong University, Yantai 264025, Shandong Province, China
| | - Lan Zheng
- Key Laboratory of Physical Fitness and Exercise Rehabilitation of Hunan Province, Hunan Normal University, Changsha 410012, Hunan Province, China
| | - Jin-Xiu Li
- Key Laboratory of Physical Fitness and Exercise Rehabilitation of Hunan Province, Hunan Normal University, Changsha 410012, Hunan Province, China
| | - Dan Cheng
- Key Laboratory of Physical Fitness and Exercise Rehabilitation of Hunan Province, Hunan Normal University, Changsha 410012, Hunan Province, China
| | - Yang Liu
- Key Laboratory of Physical Fitness and Exercise Rehabilitation of Hunan Province, Hunan Normal University, Changsha 410012, Hunan Province, China
| | - Kai Lu
- Key Laboratory of Physical Fitness and Exercise Rehabilitation of Hunan Province, Hunan Normal University, Changsha 410012, Hunan Province, China
| | - Wen-Qi Hou
- Key Laboratory of Physical Fitness and Exercise Rehabilitation of Hunan Province, Hunan Normal University, Changsha 410012, Hunan Province, China
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300
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Lastra RO, Paunesku T, Gutama B, Reyes F, François J, Martinez S, Xin L, Brown K, Zander A, Raha S, Protic M, Nanavati D, Bi Y, Woloschak GE. Protein Binding Effects of Dopamine Coated Titanium Dioxide Shell Nanoparticles. PRECISION NANOMEDICINE 2019. [DOI: 10.33218/prnano2(4).190802.1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Non-targeted nanoparticles are capable of entering cells, passing through different subcellular compartments and accumulating on their surface a protein corona that changes over time. In this study, we used metal oxide nanoparticles with iron-oxide core covered with titanium dioxide shell (Fe3O4@TiO2), with a single layer of covalently bound dopamine covering the nanoparticle surface. Mixing nanoparticles with cellular protein isolates showed that these nanoparticles can form complexes with numerous cellular proteins. The addition of non-toxic quantities of nano-particles to HeLa cell culture resulted in their non-specific uptake and accumulation of protein corona on nanoparticle surface. TfRC, Hsp90 and PARP were followed as representative protein components of nanoparticle corona; each protein bound to nanoparticles with different affinity. The presence of nanoparticles in cells also mildly modulated gene expression on the level of mRNA. In conclusion, cells exposed to non-targeted nanoparticles show subtle but numerous changes that are consistent from one experiment to another.
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Affiliation(s)
- Ruben O. Lastra
- Department of Radiation Oncology, Northwestern University Feinberg School of Medicine
| | - Tatjana Paunesku
- Department of Radiation Oncology, Northwestern University Feinberg School of Medicine
| | - Barite Gutama
- Department of Radiation Oncology, Northwestern University Feinberg School of Medicine
| | - Filiberto Reyes
- Department of Radiation Oncology, Northwestern University Feinberg School of Medicine
| | - Josie François
- Department of Radiation Oncology, Northwestern University Feinberg School of Medicine
| | - Shelby Martinez
- Department of Radiation Oncology, Northwestern University Feinberg School of Medicine
| | - Lun Xin
- Department of Radiation Oncology, Northwestern University Feinberg School of Medicine
| | - Koshonna Brown
- Department of Radiation Oncology, Northwestern University Feinberg School of Medicine
| | - Alia Zander
- Department of Radiation Oncology, Northwestern University Feinberg School of Medicine
| | - Sumita Raha
- Department of Radiation Oncology, Northwestern University Feinberg School of Medicine
| | - Miroslava Protic
- Department of Radiation Oncology, Northwestern University Feinberg School of Medicine
| | - Dhaval Nanavati
- Proteomics Core, Northwestern University Chemistry of Life Processes Institute
| | - Yingtao Bi
- Department of Biomedical Informatics, Northwestern University Feinberg School of Medicine
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