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Li C, Xue Y, Wu J, Zhang L, Yang T, Ai M, Han J, Zheng X, Wang R, Boldogh I, Ba X. MTH1 inhibition synergizes with ROS-inducing agents to trigger cervical cancer cells undergoing parthanatos. Biochim Biophys Acta Mol Basis Dis 2024; 1870:167190. [PMID: 38657912 DOI: 10.1016/j.bbadis.2024.167190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 04/15/2024] [Accepted: 04/16/2024] [Indexed: 04/26/2024]
Abstract
Cervical cancer cells possess high levels of reactive oxygen species (ROS); thus, increasing oxidative stress above the toxicity threshold to induce cell death is a promising chemotherapeutic strategy. However, the underlying mechanisms of cell death are elusive, and efficacy and toxicity issues remain. Within DNA, 8-oxo-7,8-dihydroguanine (8-oxoG) is the most frequent base lesion repaired by 8-oxoguanine glycosylase 1 (OGG1)-initiated base excision repair. Cancer cells also express high levels of MutT homolog 1 (MTH1), which prevents DNA replication-induced incorporation of 8-oxoG into the genome by hydrolyzing 8-oxo-7,8-dihydro-2'-deoxyguanosine 5'-triphosphate (8-oxo-dGTP). Here, we revealed that ROS-inducing agents triggered cervical cancer to undergo parthanatos, which was mainly induced by massive DNA strand breaks resulting from overwhelming 8-oxoG excision by OGG1. Furthermore, the MTH1 inhibitor synergized with a relatively low dose of ROS-inducing agents by enhancing 8-oxoG loading in the DNA. In vivo, this drug combination suppressed the growth of tumor xenografts, and this inhibitory effect was significantly decreased in the absence of OGG1. Hence, the present study highlights the roles of base repair enzymes in cell death induction and suggests that the combination of lower doses of ROS-inducing agents with MTH1 inhibitors may be a more selective and safer strategy for cervical cancer chemotherapy.
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Affiliation(s)
- Chunshuang Li
- The Key Laboratory of Molecular Epigenetics of Ministry of Education, Northeast Normal University, Changchun, Jilin 130024, China; School of Life Sciences, Northeast Normal University, Changchun, Jilin 130024, China
| | - Yaoyao Xue
- The Key Laboratory of Molecular Epigenetics of Ministry of Education, Northeast Normal University, Changchun, Jilin 130024, China; School of Life Sciences, Northeast Normal University, Changchun, Jilin 130024, China
| | - Jiaxin Wu
- The Key Laboratory of Molecular Epigenetics of Ministry of Education, Northeast Normal University, Changchun, Jilin 130024, China; School of Life Sciences, Northeast Normal University, Changchun, Jilin 130024, China
| | - Lihong Zhang
- The Key Laboratory of Molecular Epigenetics of Ministry of Education, Northeast Normal University, Changchun, Jilin 130024, China; School of Life Sciences, Northeast Normal University, Changchun, Jilin 130024, China
| | - Tianming Yang
- The Key Laboratory of Molecular Epigenetics of Ministry of Education, Northeast Normal University, Changchun, Jilin 130024, China; School of Life Sciences, Northeast Normal University, Changchun, Jilin 130024, China
| | - Mengtao Ai
- The Key Laboratory of Molecular Epigenetics of Ministry of Education, Northeast Normal University, Changchun, Jilin 130024, China; School of Life Sciences, Northeast Normal University, Changchun, Jilin 130024, China
| | - Jinling Han
- The Key Laboratory of Molecular Epigenetics of Ministry of Education, Northeast Normal University, Changchun, Jilin 130024, China; School of Life Sciences, Northeast Normal University, Changchun, Jilin 130024, China
| | - Xu Zheng
- The Key Laboratory of Molecular Epigenetics of Ministry of Education, Northeast Normal University, Changchun, Jilin 130024, China; School of Life Sciences, Northeast Normal University, Changchun, Jilin 130024, China
| | - Ruoxi Wang
- Key Laboratory of Animal Resistance Biology of Shandong Province, Institute of Biomedical Sciences, College of Life Sciences, Shandong Normal University, Jinan, China
| | - Istvan Boldogh
- Department of Microbiology and Immunology, University of Texas Medical Branch at Galveston, Galveston, TX 77555, USA
| | - Xueqing Ba
- The Key Laboratory of Molecular Epigenetics of Ministry of Education, Northeast Normal University, Changchun, Jilin 130024, China; School of Life Sciences, Northeast Normal University, Changchun, Jilin 130024, China.
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Balu KE, Almohdar D, Ratcliffe J, Tang Q, Parwal T, Çağlayan M. Structural and biochemical characterization of LIG1 during mutagenic nick sealing of oxidatively damaged ends at the final step of DNA repair. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.05.06.592774. [PMID: 38766188 PMCID: PMC11100680 DOI: 10.1101/2024.05.06.592774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2024]
Abstract
DNA ligase 1 (LIG1) joins broken strand-breaks in the phosphodiester backbone to finalize DNA repair pathways. We previously reported that LIG1 fails on nick repair intermediate with 3'-oxidative damage incorporated by DNA polymerase (pol) β at the downstream steps of base excision repair (BER) pathway. Here, we determined X-ray structures of LIG1/nick DNA complexes containing 3'-8oxodG and 3'-8oxorG opposite either a templating Cytosine or Adenine and demonstrated that the ligase active site engages with mutagenic repair intermediates during steps 2 and 3 of the ligation reaction referring to the formation of DNA-AMP intermediate and a final phosphodiester bond, respectively. Furthermore, we showed the mutagenic nick sealing of DNA substrates with 3'-8oxodG:A and 3'-8oxorG:A by LIG1 wild-type, immunodeficiency disease-associated variants, and DNA ligase 3α (LIG3α) in vitro . Finally, we observed that LIG1 and LIG3α seal resulting nick after an incorporation of 8oxorGTP:A by polβ and AP-Endonuclease 1 (APE1) can clean oxidatively damaged ends at the final steps. Overall, our findings uncover a mechanistic insight into how LIG1 discriminates DNA or DNA/RNA junctions including oxidative damage and a functional coordination between the downstream enzymes, polβ, APE1, and BER ligases, to process mutagenic repair intermediates to maintain repair efficiency.
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Lukina MV, Zhdanova PV, Koval VV. Structural and Dynamic Features of the Recognition of 8-oxoguanosine Paired with an 8-oxoG-clamp by Human 8-oxoguanine-DNA Glycosylase. Curr Issues Mol Biol 2024; 46:4119-4132. [PMID: 38785521 PMCID: PMC11120029 DOI: 10.3390/cimb46050253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Revised: 04/24/2024] [Accepted: 04/26/2024] [Indexed: 05/25/2024] Open
Abstract
8-oxoguanine (oxoG) is formed in DNA by the action of reactive oxygen species. As a highly mutagenic and the most common oxidative DNA lesion, it is an important marker of oxidative stress. Human 8-oxoguanine-DNA glycosylase (OGG1) is responsible for its prompt removal in human cells. OGG1 is a bifunctional DNA glycosylase with N-glycosylase and AP lyase activities. Aspects of the detailed mechanism underlying the recognition of 8-oxoguanine among numerous intact bases and its subsequent interaction with the enzyme's active site amino acid residues are still debated. The main objective of our work was to determine the effect (structural and thermodynamic) of introducing an oxoG-clamp in model DNA substrates on the process of 8-oxoG excision by OGG1. Towards that end, we used DNA duplexes modeling OGG1-specific lesions: 8-oxoguanine or an apurinic/apyrimidinic site with either cytidine or the oxoG-clamp in the complementary strand opposite to the lesion. It was revealed that there was neither hydrolysis of the N-glycosidic bond at oxoG nor cleavage of the sugar-phosphate backbone during the reaction between OGG1 and oxoG-clamp-containing duplexes. Possible structural reasons for the absence of OGG1 enzymatic activity were studied via the stopped-flow kinetic approach and molecular dynamics simulations. The base opposite the damage was found to have a critical effect on the formation of the enzyme-substrate complex and the initiation of DNA cleavage. The oxoG-clamp residue prevented the eversion of the oxoG base into the OGG1 active site pocket and impeded the correct convergence of the apurinic/apyrimidinic site of DNA and the attacking nucleophilic group of the enzyme. An obtained three-dimensional model of the OGG1 complex with DNA containing the oxoG-clamp, together with kinetic data, allowed us to clarify the role of the contact of amino acid residues with DNA in the formation of (and rearrangements in) the enzyme-substrate complex.
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Affiliation(s)
- Maria V. Lukina
- Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of Russian Academy of Sciences (ICBFM SB RAS), Novosibirsk 630090, Russia;
- Department of Natural Sciences, Novosibirsk State University, Novosibirsk 630090, Russia
| | - Polina V. Zhdanova
- Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of Russian Academy of Sciences (ICBFM SB RAS), Novosibirsk 630090, Russia;
- Department of Natural Sciences, Novosibirsk State University, Novosibirsk 630090, Russia
| | - Vladimir V. Koval
- Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of Russian Academy of Sciences (ICBFM SB RAS), Novosibirsk 630090, Russia;
- Department of Natural Sciences, Novosibirsk State University, Novosibirsk 630090, Russia
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Lopes LA, Davenport C, Ramos Torres E, Chlebowski A, Mikami A, Raber J, Ruth Torres E, Kisby G. Neuropathological Examination of Mice Chronically Exposed to Secondhand Smoke. Mil Med 2023; 188:575-583. [PMID: 37948264 PMCID: PMC10637311 DOI: 10.1093/milmed/usad247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Revised: 02/28/2023] [Accepted: 06/27/2023] [Indexed: 11/12/2023] Open
Abstract
INTRODUCTION Around 21.6-35% of military personnel are smokers, while 12.26% of them have been regularly exposed to second-hand smoke (SHS). Second-hand smoke is considered an important risk factor for neurological diseases because it can induce oxidative stress, DNA damage, and disrupt DNA repair pathways. MATERIAL AND METHODS The brain of air (sham) or SHS exposed mice was cryoperserved, sectioned, and placed on a glass slide before immunoprobing them with antibodies to observe for oxidative DNA damage (8-oxoG), oxidative DNA repair (8-oxoguanine DNA glycosylase 1, Ogg1; apurinic/apyrimidinic endonuclease, Ape1), and inflammatory (glial fibrillary acidic protein) proteins. RESULTS Nissl staining of the prefrontal cortex (PFCTX) revealed the presence of dark, shrunken cells, hippocampal thinning, and the presence of activated astrocytes in SHS exposed mice. 8-oxoG staining was also more prominent in the PFCTX and hippocampus (HIPP) of SHS exposed mice. Ogg1 staining was reduced in the PFCTX and CA3 hippocampal neurons of SHS exposed mice, whereas it was more prominent in CA1 and CA4 hippocampal neurons. In contrast, Ape1 staining was more prominent in the PFCTX and the HIPP of SHS exposed mice. CONCLUSIONS These studies demonstrate that oxidative DNA damage (8-oxoG) was elevated and oxidative DNA repair (Ape1 and Ogg1) was altered in the brain of SHS exposed mice. In addition, activated astrocytes (i.e., glial fibrillary acidic protein) were also observed in the brain of SHS exposed mice. Therefore, SHS induces both oxidative DNA damage and repair as well as inflammation as possible underlying mechanism(s) of the cognitive decline and metabolic changes that were observed in chronically exposed mice. A better understanding of how chronic exposure to SHS induces cognitive dysfunction among military personnel could help improve the combat readiness of U.S. soldiers as well as reduce the financial burden on the DOD and veterans' families.
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Affiliation(s)
- Leilani A Lopes
- Department of Basic Medical Sciences, Western University of Health Sciences, College of Osteopathic Medicine of the Pacific-Northwest, Lebanon, OR 97355, USA
| | - Conor Davenport
- Department of Basic Medical Sciences, Western University of Health Sciences, College of Osteopathic Medicine of the Pacific-Northwest, Lebanon, OR 97355, USA
| | - Estefania Ramos Torres
- Department of Basic Medical Sciences, Western University of Health Sciences, College of Osteopathic Medicine of the Pacific-Northwest, Lebanon, OR 97355, USA
| | - Anna Chlebowski
- Department of Basic Medical Sciences, Western University of Health Sciences, College of Osteopathic Medicine of the Pacific-Northwest, Lebanon, OR 97355, USA
| | - Anna Mikami
- Department of Basic Medical Sciences, Western University of Health Sciences, College of Osteopathic Medicine of the Pacific-Northwest, Lebanon, OR 97355, USA
| | - Jacob Raber
- Department of Neurology, Psychiatry, and Radiation Medicine, Division of Neuroscience Oregon National Primate Research Center, Oregon Health & Science University, Beaverton, OR 97006, USA
| | - Eileen Ruth Torres
- Department of Neurology, Psychiatry, and Radiation Medicine, Division of Neuroscience Oregon National Primate Research Center, Oregon Health & Science University, Beaverton, OR 97006, USA
| | - Glen Kisby
- Department of Basic Medical Sciences, Western University of Health Sciences, College of Osteopathic Medicine of the Pacific-Northwest, Lebanon, OR 97355, USA
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Basu S, Song M, Adams L, Jeong I, Je G, Guhathakurta S, Jiang J, Boparai N, Dai W, Cardozo-Pelaez F, Tatulian SA, Han KY, Elliott J, Baum J, McLean PJ, Dickson DW, Kim YS. Transcriptional mutagenesis of α-synuclein caused by DNA oxidation in Parkinson's disease pathogenesis. Acta Neuropathol 2023; 146:685-705. [PMID: 37740734 PMCID: PMC10564827 DOI: 10.1007/s00401-023-02632-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 09/09/2023] [Accepted: 09/10/2023] [Indexed: 09/25/2023]
Abstract
Oxidative stress plays an essential role in the development of Parkinson's disease (PD). 8-oxo-7,8-dihydroguanine (8-oxodG, oxidized guanine) is the most abundant oxidative stress-mediated DNA lesion. However, its contributing role in underlying PD pathogenesis remains unknown. In this study, we hypothesized that 8-oxodG can generate novel α-synuclein (α-SYN) mutants with altered pathologic aggregation through a phenomenon called transcriptional mutagenesis (TM). We observed a significantly higher accumulation of 8-oxodG in the midbrain genomic DNA from PD patients compared to age-matched controls, both globally and region specifically to α-SYN. In-silico analysis predicted that forty-three amino acid positions can contribute to TM-derived α-SYN mutation. Here, we report a significantly higher load of TM-derived α-SYN mutants from the midbrain of PD patients compared to controls using a sensitive PCR-based technique. We found a novel Serine42Tyrosine (S42Y) α-SYN as the most frequently detected TM mutant, which incidentally had the highest predicted aggregation score amongst all TM variants. Immunohistochemistry of midbrain sections from PD patients using a newly characterized antibody for S42Y identified S42Y-laden Lewy bodies (LB). We further demonstrated that the S42Y TM variant significantly accelerates WT α-SYN aggregation by cell and recombinant protein-based assays. Cryo-electron tomography revealed that S42Y exhibits considerable conformational heterogeneity compared to WT fibrils. Moreover, S42Y exhibited higher neurotoxicity compared to WT α-SYN as shown in mouse primary cortical cultures and AAV-mediated overexpression in the substantia nigra of C57BL/6 J mice. To our knowledge, this is the first report describing the possible contribution of TM-generated mutations of α-SYN to LB formation and PD pathogenesis.
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Affiliation(s)
- Sambuddha Basu
- Burnett School of Biomedical Sciences, UCF College of Medicine, University of Central Florida, Orlando, FL, 32827, USA
| | - Minkyung Song
- Department of Neurology, Robert Wood Johnson Medical School, Institute for Neurological Therapeutics at Rutgers, Rutgers Biomedical and Health Sciences, 683 Hoes Lane West, Piscataway, NJ, 08854, USA
| | - Levi Adams
- Department of Neurology, Robert Wood Johnson Medical School, Institute for Neurological Therapeutics at Rutgers, Rutgers Biomedical and Health Sciences, 683 Hoes Lane West, Piscataway, NJ, 08854, USA
| | - Inhye Jeong
- Department of Neurology, Robert Wood Johnson Medical School, Institute for Neurological Therapeutics at Rutgers, Rutgers Biomedical and Health Sciences, 683 Hoes Lane West, Piscataway, NJ, 08854, USA
| | - Goun Je
- Burnett School of Biomedical Sciences, UCF College of Medicine, University of Central Florida, Orlando, FL, 32827, USA
| | - Subhrangshu Guhathakurta
- Burnett School of Biomedical Sciences, UCF College of Medicine, University of Central Florida, Orlando, FL, 32827, USA
| | - Jennifer Jiang
- Department of Cell Biology and Neuroscience, Institute for Quantitative Biomedicine, Rutgers University, Piscataway, NJ, 08854, USA
| | - Nikpreet Boparai
- Department of Cell Biology and Neuroscience, Institute for Quantitative Biomedicine, Rutgers University, Piscataway, NJ, 08854, USA
| | - Wei Dai
- Department of Cell Biology and Neuroscience, Institute for Quantitative Biomedicine, Rutgers University, Piscataway, NJ, 08854, USA
| | - Fernando Cardozo-Pelaez
- Center for Environmental Health Sciences, University of Montana, Missoula, MT, 59812, USA
- Center for Structural and Functional Neurosciences, University of Montana, Missoula, MT, 59812, USA
| | - Suren A Tatulian
- Department of Physics, University of Central Florida, Orlando, FL, 32816, USA
| | - Kyu Young Han
- CREOL, The College of Optics and Photonics, University of Central Florida, Orlando, FL, USA
| | - Jordan Elliott
- Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, NJ, 08854, USA
| | - Jean Baum
- Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, NJ, 08854, USA
| | - Pamela J McLean
- Department of Neuroscience, Mayo Clinic, 4500 San Pablo Rd, Jacksonville, FL, 32224, USA
| | - Dennis W Dickson
- Department of Neuroscience, Mayo Clinic, 4500 San Pablo Rd, Jacksonville, FL, 32224, USA
| | - Yoon-Seong Kim
- Department of Neurology, Robert Wood Johnson Medical School, Institute for Neurological Therapeutics at Rutgers, Rutgers Biomedical and Health Sciences, 683 Hoes Lane West, Piscataway, NJ, 08854, USA.
- Burnett School of Biomedical Sciences, UCF College of Medicine, University of Central Florida, Orlando, FL, 32827, USA.
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Hamal Dhakal S, Kavita K, Panchapakesan SSS, Roth A, Breaker RR. 8-oxoguanine riboswitches in bacteria detect and respond to oxidative DNA damage. Proc Natl Acad Sci U S A 2023; 120:e2307854120. [PMID: 37748066 PMCID: PMC10556655 DOI: 10.1073/pnas.2307854120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Accepted: 08/25/2023] [Indexed: 09/27/2023] Open
Abstract
Riboswitches rely on structured aptamer domains to selectively sense their target ligands and regulate gene expression. However, some riboswitch aptamers in bacteria carry mutations in their otherwise strictly conserved binding pockets that change ligand specificities. The aptamer domain of a riboswitch class originally found to selectively sense guanine forms a three-stem junction that has since been observed to exploit numerous alterations in its ligand-binding pocket. These rare variants have modified their ligand specificities to sense other purines or purine derivatives, including adenine, 2'-deoxyguanosine (three classes), and xanthine. Herein, we report the characteristics of a rare variant that is narrowly distributed in the Paenibacillaceae family of bacteria. Known representatives are always associated with genes encoding 8-oxoguanine deaminase. As predicted from this gene association, these variant riboswitches tightly bind 8-oxoguanine (8-oxoG), strongly discriminate against other purine derivatives, and function as genetic "ON" switches. Following exposure of cells to certain oxidative stresses, a representative 8-oxoG riboswitch activates gene expression, likely caused by the accumulation of 8-oxoG due to oxidative damage to G nucleobases in DNA, RNA, and the nucleotide pool. Furthermore, an engineered version of the variant aptamer was prepared that exhibits specificity for 8-oxoadenine, further demonstrating that RNA aptamers can acquire mutations that expand their ability to detect and respond to oxidative damage.
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Affiliation(s)
- Siddhartha Hamal Dhakal
- Department of Molecular, Cellular and Developmental Biology, Yale University, New Haven, CT06511-8103
| | - Kumari Kavita
- Department of Molecular, Cellular and Developmental Biology, Yale University, New Haven, CT06511-8103
| | | | - Adam Roth
- HHMI, Yale University, New Haven, CT06511-8103
| | - Ronald R. Breaker
- Department of Molecular, Cellular and Developmental Biology, Yale University, New Haven, CT06511-8103
- HHMI, Yale University, New Haven, CT06511-8103
- Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, CT06511-8103
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Imtiyaz K, Husain Rahmani A, Alsahli MA, Almatroodi SA, Rizvi MMA. Fisetin induces apoptosis in human skin cancer cells through downregulating MTH1. J Biomol Struct Dyn 2023; 41:7339-7353. [PMID: 36129011 DOI: 10.1080/07391102.2022.2121323] [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: 04/07/2022] [Accepted: 08/27/2022] [Indexed: 10/14/2022]
Abstract
Fisetin, a natural flavonoid molecule, has been shown to have anticancer properties against various malignancies. In this investigation, we discovered that Fisetin decreased cell viability of both the treated skin cancer cell lines A375 and A431 in a dose and time-dependent manner. The IC50 values ranging from 57.60 µM ± 6.59 to 41.70 µM ± 1.25 in A375 and 48.70 µM ± 5.49 to 33.67 µM ± 1.03 for A431 at the observed time ranging between 24 h to 72 h of treatment remained quite enthusiastic when compared with the normal HEK 293 cells. Fisetin significantly decreased colony formation and migratory ability of the cancer cells. Flow cytometry analysis revealed that Fisetin significantly restricted the progression of skin cancer cells in the G0/G1 phase of the cell cycle and induced cells to undergo apoptosis by increasing reactive oxygen species, decreasing mitochondrial membrane potential, and elevating the count of early and late apoptotic cells. Our in silico studies of molecular docking followed by molecular dynamics simulation found that the interactions and stability of MTH1 protein with Fisetin further showed a considerable binding affinity for MTH1 (-11.4 kcal/mol) and developed stable complexes maintained throughout 100 ns trajectories. Our western blot analysis endorsed this. We found that Fisetin downregulated the expression levels of MTH1 also in addition, it played a crucial role in regulation of apoptotic events in cancer cells. We therefore, conclude that Fisetin anticancer properties against skin cancer cells are mediated through MTH1 inhibition followed by ATM and P53 upregulation.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Khalid Imtiyaz
- Department of Bioscience, Genome Biology Lab, New Delhi, India
| | - Arshad Husain Rahmani
- Department of Medical Laboratories, College of Applied Medical Sciences, Qassim University, Buraydah, Saudi Arabia
| | - Mohammed A Alsahli
- Department of Medical Laboratories, College of Applied Medical Sciences, Qassim University, Buraydah, Saudi Arabia
| | - Saleh A Almatroodi
- Department of Medical Laboratories, College of Applied Medical Sciences, Qassim University, Buraydah, Saudi Arabia
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Broderick K, Moutaoufik MT, Aly KA, Babu M. Sanitation enzymes: Exquisite surveillance of the noncanonical nucleotide pool to safeguard the genetic blueprint. Semin Cancer Biol 2023; 94:11-20. [PMID: 37211293 DOI: 10.1016/j.semcancer.2023.05.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 05/14/2023] [Accepted: 05/17/2023] [Indexed: 05/23/2023]
Abstract
Reactive oxygen species (ROS) are common products of normal cellular metabolism, but their elevated levels can result in nucleotide modifications. These modified or noncanonical nucleotides often integrate into nascent DNA during replication, causing lesions that trigger DNA repair mechanisms such as the mismatch repair machinery and base excision repair. Four superfamilies of sanitization enzymes can effectively hydrolyze noncanonical nucleotides from the precursor pool and eliminate their unintended incorporation into DNA. Notably, we focus on the representative MTH1 NUDIX hydrolase, whose enzymatic activity is ostensibly nonessential under normal physiological conditions. Yet, the sanitization attributes of MTH1 are more prevalent when ROS levels are abnormally high in cancer cells, rendering MTH1 an interesting target for developing anticancer treatments. We discuss multiple MTH1 inhibitory strategies that have emerged in recent years, and the potential of NUDIX hydrolases as plausible targets for the development of anticancer therapeutics.
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Affiliation(s)
- Kirsten Broderick
- Department of Biochemistry, University of Regina, Regina, Saskatchewan, Canada
| | | | - Khaled A Aly
- Department of Biochemistry, University of Regina, Regina, Saskatchewan, Canada
| | - Mohan Babu
- Department of Biochemistry, University of Regina, Regina, Saskatchewan, Canada.
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Xulu KR, Nweke EE, Augustine TN. Delineating intra-tumoral heterogeneity and tumor evolution in breast cancer using precision-based approaches. Front Genet 2023; 14:1087432. [PMID: 37662839 PMCID: PMC10469897 DOI: 10.3389/fgene.2023.1087432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Accepted: 08/08/2023] [Indexed: 09/05/2023] Open
Abstract
The burden of breast cancer continues to increase worldwide as it remains the most diagnosed tumor in females and the second leading cause of cancer-related deaths. Breast cancer is a heterogeneous disease characterized by different subtypes which are driven by aberrations in key genes such as BRCA1 and BRCA2, and hormone receptors. However, even within each subtype, heterogeneity that is driven by underlying evolutionary mechanisms is suggested to underlie poor response to therapy, variance in disease progression, recurrence, and relapse. Intratumoral heterogeneity highlights that the evolvability of tumor cells depends on interactions with cells of the tumor microenvironment. The complexity of the tumor microenvironment is being unraveled by recent advances in screening technologies such as high throughput sequencing; however, there remain challenges that impede the practical use of these approaches, considering the underlying biology of the tumor microenvironment and the impact of selective pressures on the evolvability of tumor cells. In this review, we will highlight the advances made thus far in defining the molecular heterogeneity in breast cancer and the implications thereof in diagnosis, the design and application of targeted therapies for improved clinical outcomes. We describe the different precision-based approaches to diagnosis and treatment and their prospects. We further propose that effective cancer diagnosis and treatment are dependent on unpacking the tumor microenvironment and its role in driving intratumoral heterogeneity. Underwriting such heterogeneity are Darwinian concepts of natural selection that we suggest need to be taken into account to ensure evolutionarily informed therapeutic decisions.
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Affiliation(s)
- Kutlwano Rekgopetswe Xulu
- School of Anatomical Sciences, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Ekene Emmanuel Nweke
- Department of Surgery, School of Clinical Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Tanya Nadine Augustine
- School of Anatomical Sciences, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
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10
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Yu S, Zhao R, Zhang B, Lai C, Li L, Shen J, Tan X, Shao J. Research progress and application of the CRISPR/Cas9 gene-editing technology based on hepatocellular carcinoma. Asian J Pharm Sci 2023; 18:100828. [PMID: 37583709 PMCID: PMC10424087 DOI: 10.1016/j.ajps.2023.100828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 04/17/2023] [Accepted: 07/10/2023] [Indexed: 08/17/2023] Open
Abstract
Hepatocellular carcinoma (HCC) is now a common cause of cancer death, with no obvious change in patient survival over the past few years. Although the traditional therapeutic modalities for HCC patients mainly involved in surgery, chemotherapy, and radiotherapy, which have achieved admirable achievements, challenges are still existed, such as drug resistance and toxicity. The emerging gene therapy of clustered regularly interspaced short palindromic repeat/CRISPR-associated nuclease 9-based (CRISPR/Cas9), as an alternative to traditional treatment methods, has attracted considerable attention for eradicating resistant malignant tumors and regulating multiple crucial events of target gene-editing. Recently, advances in CRISPR/Cas9-based anti-drugs are presented at the intersection of science, such as chemistry, materials science, tumor biology, and genetics. In this review, the principle as well as statues of CRISPR/Cas9 technique were introduced first to show its feasibility. Additionally, the emphasis was placed on the applications of CRISPR/Cas9 technology in therapeutic HCC. Further, a broad overview of non-viral delivery systems for the CRISPR/Cas9-based anti-drugs in HCC treatment was summarized to delineate their design, action mechanisms, and anticancer applications. Finally, the limitations and prospects of current studies were also discussed, and we hope to provide comprehensively theoretical basis for the designing of anti-drugs.
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Affiliation(s)
- Shijing Yu
- Fujian Provincial Key Laboratory of Cancer Metastasis Chemoprevention and Chemotherapy, College of Chemistry, Fuzhou University, Fuzhou 350108, China
| | - Ruirui Zhao
- Fujian Provincial Key Laboratory of Cancer Metastasis Chemoprevention and Chemotherapy, College of Chemistry, Fuzhou University, Fuzhou 350108, China
| | - Bingchen Zhang
- Fujian Provincial Key Laboratory of Cancer Metastasis Chemoprevention and Chemotherapy, College of Chemistry, Fuzhou University, Fuzhou 350108, China
| | - Chunmei Lai
- Fujian Provincial Key Laboratory of Cancer Metastasis Chemoprevention and Chemotherapy, College of Chemistry, Fuzhou University, Fuzhou 350108, China
| | - Linyan Li
- Fujian Provincial Key Laboratory of Cancer Metastasis Chemoprevention and Chemotherapy, College of Chemistry, Fuzhou University, Fuzhou 350108, China
| | - Jiangwen Shen
- Fujian Provincial Key Laboratory of Cancer Metastasis Chemoprevention and Chemotherapy, College of Chemistry, Fuzhou University, Fuzhou 350108, China
| | - Xiarong Tan
- Fujian Provincial Key Laboratory of Cancer Metastasis Chemoprevention and Chemotherapy, College of Chemistry, Fuzhou University, Fuzhou 350108, China
| | - Jingwei Shao
- Fujian Provincial Key Laboratory of Cancer Metastasis Chemoprevention and Chemotherapy, College of Chemistry, Fuzhou University, Fuzhou 350108, China
- College of Materials and Chemical Engineering, Minjiang University, Fuzhou 350108, China
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11
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De Rosa M, Barnes RP, Nyalapatla PR, Wipf P, Opresko PL. OGG1 and MUTYH repair activities promote telomeric 8-oxoguanine induced cellular senescence. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.04.10.536247. [PMID: 37090589 PMCID: PMC10120708 DOI: 10.1101/2023.04.10.536247] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/25/2023]
Abstract
Telomeres are prone to formation of the common oxidative lesion 8-oxoguanine (8oxoG), and the acute production of 8oxoG damage at telomeres is sufficient to drive rapid cellular senescence. OGG1 and MUTYH glycosylases initiate base excision repair (BER) at 8oxoG sites to remove the lesion or prevent mutation. Here, we show OGG1 loss or inhibition, or MUTYH loss, partially rescues telomeric 8oxoG-induced senescence, and loss of both glycosylases results in a near complete rescue. Loss of these glycosylases also suppresses 8oxoG-induced telomere fragility and dysfunction, indicating that single-stranded break (SSB) intermediates arising downstream of glycosylase activity impair telomere replication. The failure to initiate BER in glycosylase-deficient cells suppresses PARylation at SSB intermediates and confers resistance to the synergistic effects of PARP inhibitors on damage-induced senescence. Our studies reveal that inefficient completion of 8oxoG BER at telomeres triggers cellular senescence via SSB intermediates which impair telomere replication and stability.
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Affiliation(s)
- Mariarosaria De Rosa
- Department of Environmental and Occupational Health, University of Pittsburgh School of Public Health, Pittsburgh, PA, USA
- UPMC Hillman Cancer Center, Pittsburgh, PA, USA
| | - Ryan P. Barnes
- Department of Environmental and Occupational Health, University of Pittsburgh School of Public Health, Pittsburgh, PA, USA
- UPMC Hillman Cancer Center, Pittsburgh, PA, USA
| | | | - Peter Wipf
- UPMC Hillman Cancer Center, Pittsburgh, PA, USA
- Deparment of Chemistry, University of Pittsburgh, Pittsburgh, PA, USA
| | - Patricia L. Opresko
- Department of Environmental and Occupational Health, University of Pittsburgh School of Public Health, Pittsburgh, PA, USA
- UPMC Hillman Cancer Center, Pittsburgh, PA, USA
- Department of Pharmacology and Chemical Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
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12
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D'Aronco G, Ferraro P, Sassano V, Dagostino C, Biancotto M, Palumbo E, Presot E, Russo A, Bianchi V, Rampazzo C. SAMHD1 restricts the deoxyguanosine triphosphate pool contributing to telomere stability in telomerase-positive cells. FASEB J 2023; 37:e22883. [PMID: 36934410 DOI: 10.1096/fj.202300122r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Revised: 02/26/2023] [Accepted: 03/07/2023] [Indexed: 03/20/2023]
Abstract
SAMHD1 (Sterile alpha motif and histidine/aspartic acid domain-containing protein 1) is a dNTP triphosphohydrolase crucial in the maintenance of balanced cellular dNTP pools, which support genome integrity. In SAMHD1 deficient fibroblasts isolated from Aicardi-Goutières Syndrome (AGS) patients, all four DNA precursors are increased and markedly imbalanced with the largest effect on dGTP, a key player in the modulation of telomerase processivity. Here, we present data showing that SAMHD1, by restricting the dGTP pool, contributes to telomere maintenance in hTERT-immortalized human fibroblasts from AGS patients as well as in telomerase positive cancer cell lines. Only in cells expressing telomerase, the lack of SAMHD1 causes excessive lengthening of telomeres and telomere fragility, whereas primary fibroblasts lacking both SAMHD1 and telomerase enter normally into senescence. Telomere lengthening observed in SAMHD1 deficient but telomerase proficient cells is a gradual process, in accordance with the intrinsic property of telomerase of adding only a few tens of nucleotides for each cycle. Therefore, only a prolonged exposure to high dGTP content causes telomere over-elongation. hTERT-immortalized AGS fibroblasts display also high fragility of chromosome ends, a marker of telomere replication stress. These results not only demonstrate the functional importance of dGTP cellular level but also reveal the critical role played by SAMHD1 in restraining telomerase processivity and safeguarding telomere stability.
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Affiliation(s)
| | - Paola Ferraro
- Department of Biology, University of Padova, Padova, Italy
| | | | | | | | - Elisa Palumbo
- Department of Molecular Medicine, University of Padova, Padova, Italy
| | - Ettore Presot
- Department of Biology, University of Padova, Padova, Italy
| | - Antonella Russo
- Department of Molecular Medicine, University of Padova, Padova, Italy
| | - Vera Bianchi
- Department of Biology, University of Padova, Padova, Italy
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13
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Kumar S, Suman S, Moon BH, Fornace AJ, Datta K. Low dose radiation upregulates Ras/p38 and NADPH oxidase in mouse colon two months after exposure. Mol Biol Rep 2023; 50:2067-2076. [PMID: 36542238 PMCID: PMC10119992 DOI: 10.1007/s11033-022-08186-3] [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: 10/26/2022] [Accepted: 12/07/2022] [Indexed: 12/24/2022]
Abstract
BACKGROUND Exposure to ionizing is known to cause persistent cellular oxidative stress and NADPH oxidase (Nox) is a major source of cellular oxidant production. Chronic oxidative stress is associated with a myriad of human diseases including gastrointestinal cancer. However, the roles of NADPH oxidase in relation of long-term oxidative stress in colonic epithelial cells after radiation exposure are yet to be clearly established. METHODS AND RESULTS Mice were exposed either to sham or to 0.5 Gy γ radiation, and NADPH oxidase, oxidative stress, and related signaling pathways were assessed in colon samples 60 days after exposure. Radiation exposure led to increased expression of colon-specific NADPH oxidase isoform, Nox1, as well as upregulation of its modifiers such as Noxa1 and Noxo1 at the mRNA and protein level. Co-immunoprecipitation experiments showed enhanced binding of Rac1, an activator of NADPH oxidase, to Nox1. Increased 4-hydroxynonenal, 8-oxo-dG, and γH2AX along with higher protein carbonylation levels suggest increased oxidative stress after radiation exposure. Immunoblot analysis demonstrates upregulation of Ras/p38 pathway, and Gata6 and Hif1α after irradiation. Increased staining of β-catenin, cyclinD1, and Ki67 after radiation was also observed. CONCLUSIONS In summary, data show that exposure to a low dose of radiation was associated with upregulation of NADPH oxidase and its modifiers along with increased Ras/p38/Gata6 signaling in colon. When considered along with oxidative damage and proliferative markers, our observations suggest that the NADPH oxidase pathway could be playing a critical role in propagating long-term oxidative stress after radiation with implications for colon carcinogenesis.
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Affiliation(s)
- Santosh Kumar
- Lombardi Comprehensive Cancer Center, Georgetown University, Washington, DC, 20057, USA
| | - Shubhankar Suman
- Lombardi Comprehensive Cancer Center, Georgetown University, Washington, DC, 20057, USA
| | - Bo-Hyun Moon
- Lombardi Comprehensive Cancer Center, Georgetown University, Washington, DC, 20057, USA
| | - Albert J Fornace
- Lombardi Comprehensive Cancer Center, Georgetown University, Washington, DC, 20057, USA.,Department of Biochemistry and Molecular & Cellular Biology, Georgetown University, Research Building, Room E518, 3970 Reservoir Rd., NW, Washington, DC, 20057, USA
| | - Kamal Datta
- Lombardi Comprehensive Cancer Center, Georgetown University, Washington, DC, 20057, USA. .,Department of Biochemistry and Molecular & Cellular Biology, Georgetown University, Research Building, Room E518, 3970 Reservoir Rd., NW, Washington, DC, 20057, USA.
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14
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Li J, Zhang H, Wang ZH, Li YX, Zhang LQ, Cui J, Li DN, Wang ZH, Liu Q, Liu Z, Iwakuma T, Cai JP. 8-oxo-dGTP curbs tumor development via S phase arrest and AIF-mediated apoptosis. Free Radic Biol Med 2023; 196:53-64. [PMID: 36640852 DOI: 10.1016/j.freeradbiomed.2023.01.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Revised: 12/19/2022] [Accepted: 01/10/2023] [Indexed: 01/13/2023]
Abstract
Oxidative stress can attack precursor nucleotides, resulting in nucleic acid damage in cells. It remains unclear how 8-oxo-dGTP and 8-oxoGTP, oxidized forms of dGTP and GTP, respectively, could affect DNA or RNA oxidation levels and tumor development. To address this, we intravenously administered 8-oxo-dGTP and 8-oxoGTP to wild-type and MTH1-knockout mice. 8-oxoGTP administration increased frequency of tumor incidence, which is more prominent in MTH1-knockout mice. However, 8-oxo-dGTP treatment rather reduced tumor development regardless of the mouse genotype. The tumor suppressive effects of 8-oxo-dGTP were further confirmed using xenograft and C57/6J-ApcMin/Nju mouse models. Mechanistically, 8-oxo-dGTP increased the 8-oxo-dG contents in DNA and DNA strand breakage, induced cell cycle arrest in S phase and apoptosis mediated by AIF, eventually leading to reduced tumor incidence. These results suggest distinct roles of 8-oxo-dGTP and 8-oxoGTP in tumor development.
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Affiliation(s)
- Jin Li
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, PR China
| | - He Zhang
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, PR China; Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu, Sichuan Province, PR China
| | - Zhen-He Wang
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, PR China
| | - Yun-Xuan Li
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, PR China
| | - Li-Qun Zhang
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, PR China
| | - Ju Cui
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, PR China
| | - Dan-Ni Li
- Department of Laboratory Medicine, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, PR China
| | - Zi-Hui Wang
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, PR China; Graduate School of Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, PR China
| | - Qian Liu
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, PR China; Graduate School of Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, PR China
| | - Zhen Liu
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, PR China; Graduate School of Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, PR China
| | - Tomoo Iwakuma
- Children's Mercy Research Institute, Kansas City, MO, 64108, USA
| | - Jian-Ping Cai
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, PR China.
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15
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Gillard M, Bonnet H, Lartia R, Yacoub H, Dejeu J, Defrancq E, Elias B. Luminescent Ruthenium(II) Complexes Used for the Detection of 8-Oxoguanine in the Human Telomeric Sequence. Bioconjug Chem 2023; 34:414-421. [PMID: 36689988 DOI: 10.1021/acs.bioconjchem.2c00578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Detecting cancer at the early stage of the disease is crucial to keep the best chance for successful treatment. The recent development of genomic screening, a methodology that is addressed to asymptomatic patients presumably at risk of carcinogenesis, has stimulated the quest for new tools able to signal the level of risk. Carcinogenesis has been associated to chronic oxidative stress exceeding the antioxidant defenses and leading to critical genome alteration levels. The telomeric regions are presumably the most exposed to oxidative stress due to their high concentration of guanine (i.e., the easiest oxidizable nucleic base). Accumulation of 8-oxoguanine in telomeres, thus oxidative lesions, was reportedly associated with telomeric crisis and carcinogenesis. In this study, we report on the capacity of Ru(II) polyazaaromatic complexes to photoprobe 8-oxoguanine into the human telomeric sequence with the view of developing new tools for cancer risk screening.
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Affiliation(s)
- Martin Gillard
- Molecular Chemistry, Materials and Catalysis (MOST), Université catholique de Louvain (UCLouvain), Institut de la Matière Condensée et des Nanosciences (IMCN), Place Louis Pasteur 1, bte L4.01.02, B-1348 Louvain-la-Neuve, Belgium
| | - Hugues Bonnet
- Département de Chimie Moléculaire, UMR CNRS 5250, Université Grenoble-Alpes (UGA), CS 40700, 38058 Grenoble, France
| | - Rémy Lartia
- Département de Chimie Moléculaire, UMR CNRS 5250, Université Grenoble-Alpes (UGA), CS 40700, 38058 Grenoble, France
| | - Hiba Yacoub
- Département de Chimie Moléculaire, UMR CNRS 5250, Université Grenoble-Alpes (UGA), CS 40700, 38058 Grenoble, France
| | - Jérôme Dejeu
- Département de Chimie Moléculaire, UMR CNRS 5250, Université Grenoble-Alpes (UGA), CS 40700, 38058 Grenoble, France.,CNRS UMR-6174, FEMTO-ST Institute, Université de Bourgogne Franche-Comté, F-25000 Besançon, France
| | - Eric Defrancq
- Département de Chimie Moléculaire, UMR CNRS 5250, Université Grenoble-Alpes (UGA), CS 40700, 38058 Grenoble, France
| | - Benjamin Elias
- Molecular Chemistry, Materials and Catalysis (MOST), Université catholique de Louvain (UCLouvain), Institut de la Matière Condensée et des Nanosciences (IMCN), Place Louis Pasteur 1, bte L4.01.02, B-1348 Louvain-la-Neuve, Belgium
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16
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Wallner O, Cázares-Körner A, Scaletti ER, Masuyer G, Bekkhus T, Visnes T, Mamonov K, Ortis F, Lundbäck T, Volkova M, Koolmeister T, Wiita E, Loseva O, Pandey M, Homan E, Benítez-Buelga C, Davies J, Scobie M, Warpman Berglund U, Kalderén C, Stenmark P, Helleday T, Michel M. Optimization of N-Piperidinyl-Benzimidazolone Derivatives as Potent and Selective Inhibitors of 8-Oxo-Guanine DNA Glycosylase 1. ChemMedChem 2023; 18:e202200310. [PMID: 36128847 PMCID: PMC10092094 DOI: 10.1002/cmdc.202200310] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Revised: 09/20/2022] [Indexed: 01/24/2023]
Abstract
8-oxo Guanine DNA Glycosylase 1 is the initiating enzyme within base excision repair and removes oxidized guanines from damaged DNA. Since unrepaired 8-oxoG could lead to G : C→T : A transversion, base removal is of utmost importance for cells to ensure genomic integrity. For cells with elevated levels of reactive oxygen species this dependency is further increased. In the past we and others have validated OGG1 as a target for inhibitors to treat cancer and inflammation. Here, we present the optimization campaign that led to the broadly used tool compound TH5487. Based on results from a small molecule screening campaign, we performed hit to lead expansion and arrived at potent and selective substituted N-piperidinyl-benzimidazolones. Using X-ray crystallography data, we describe the surprising binding mode of the most potent member of the class, TH8535. Here, the N-Piperidinyl-linker adopts a chair instead of a boat conformation which was found for weaker analogues. We further demonstrate cellular target engagement and efficacy of TH8535 against a number of cancer cell lines.
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Affiliation(s)
- Olov Wallner
- Science for Life Laboratory, Department of Oncology-Pathology, Karolinska Institutet, 171 77, Stockholm, Sweden
| | - Armando Cázares-Körner
- Science for Life Laboratory, Department of Oncology-Pathology, Karolinska Institutet, 171 77, Stockholm, Sweden
| | - Emma Rose Scaletti
- Department of Biochemistry and Biophysics, Stockholm University, 10691, Stockholm, Sweden
| | - Geoffrey Masuyer
- Department of Biochemistry and Biophysics, Stockholm University, 10691, Stockholm, Sweden
| | - Tove Bekkhus
- Science for Life Laboratory, Department of Oncology-Pathology, Karolinska Institutet, 171 77, Stockholm, Sweden
| | - Torkild Visnes
- Science for Life Laboratory, Department of Oncology-Pathology, Karolinska Institutet, 171 77, Stockholm, Sweden.,Department of Biotechnology and Nanomedicine, SINTEF Industry, 7465, Trondheim, Norway
| | - Kirill Mamonov
- Science for Life Laboratory, Department of Oncology-Pathology, Karolinska Institutet, 171 77, Stockholm, Sweden
| | - Florian Ortis
- Science for Life Laboratory, Department of Oncology-Pathology, Karolinska Institutet, 171 77, Stockholm, Sweden
| | - Thomas Lundbäck
- Chemical Biology Consortium Sweden (CBCS), Science for Life Laboratory, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, 171 77, Stockholm, Sweden
| | - Maria Volkova
- Science for Life Laboratory, Department of Oncology-Pathology, Karolinska Institutet, 171 77, Stockholm, Sweden
| | - Tobias Koolmeister
- Science for Life Laboratory, Department of Oncology-Pathology, Karolinska Institutet, 171 77, Stockholm, Sweden
| | - Elisée Wiita
- Science for Life Laboratory, Department of Oncology-Pathology, Karolinska Institutet, 171 77, Stockholm, Sweden
| | - Olga Loseva
- Science for Life Laboratory, Department of Oncology-Pathology, Karolinska Institutet, 171 77, Stockholm, Sweden
| | - Monica Pandey
- Science for Life Laboratory, Department of Oncology-Pathology, Karolinska Institutet, 171 77, Stockholm, Sweden
| | - Evert Homan
- Science for Life Laboratory, Department of Oncology-Pathology, Karolinska Institutet, 171 77, Stockholm, Sweden
| | - Carlos Benítez-Buelga
- Science for Life Laboratory, Department of Oncology-Pathology, Karolinska Institutet, 171 77, Stockholm, Sweden.,Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Madrid, Spain
| | - Jonathan Davies
- Department of Biochemistry and Biophysics, Stockholm University, 10691, Stockholm, Sweden
| | - Martin Scobie
- Science for Life Laboratory, Department of Oncology-Pathology, Karolinska Institutet, 171 77, Stockholm, Sweden.,Oxcia AB, 113 34, Stockholm, Sweden
| | - Ulrika Warpman Berglund
- Science for Life Laboratory, Department of Oncology-Pathology, Karolinska Institutet, 171 77, Stockholm, Sweden.,Oxcia AB, 113 34, Stockholm, Sweden
| | - Christina Kalderén
- Science for Life Laboratory, Department of Oncology-Pathology, Karolinska Institutet, 171 77, Stockholm, Sweden.,Oxcia AB, 113 34, Stockholm, Sweden
| | - Pål Stenmark
- Department of Biochemistry and Biophysics, Stockholm University, 10691, Stockholm, Sweden.,Department of Experimental Medical Science, Lund University, 221 00, Lund, Sweden
| | - Thomas Helleday
- Science for Life Laboratory, Department of Oncology-Pathology, Karolinska Institutet, 171 77, Stockholm, Sweden.,Sheffield Cancer Centre, Department of Oncology and Metabolism, University of Sheffield, S10 2TN, Sheffield, UK
| | - Maurice Michel
- Science for Life Laboratory, Department of Oncology-Pathology, Karolinska Institutet, 171 77, Stockholm, Sweden
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17
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NUDT1 Could Be a Prognostic Biomarker and Correlated with Immune Infiltration in Clear Cell Renal Cell Carcinoma. Appl Bionics Biomech 2022; 2022:3669296. [PMID: 36606241 PMCID: PMC9808898 DOI: 10.1155/2022/3669296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Accepted: 10/25/2022] [Indexed: 12/28/2022] Open
Abstract
Background Clear cell renal cell carcinoma (ccRCC) is a malignant tumor with high morbidity and mortality. As a member of the Nudix hydrolase superfamily, Nudix (nucleoside diphosphate-linked moiety X)-type motif 1 (NUDT1) is closely related to the occurrence and development of cancer. Our study aims to explore the role of NUDT1 in ccRCC and its relationship with immune infiltration. Methods The NUDT1 expression matrix and corresponding clinical information were obtained from The Cancer Genome Atlas (TCGA) database. The expression difference of NUDT1 in ccRCC and its relationship with the clinical characteristics were investigated using R software. Kaplan-Meier (K-M) analysis, univariate Cox regression, multivariate Cox regression, receiver operating characteristic (ROC) curve, and nomogram were utilized to evaluate the survival and prognosis of patients. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) were utilized to explore the function of differential genes in low- or high-expression group of NUDT1. TCGA dataset and Tumor IMmune Estimation Resource (TIMER) database were utilized to explore the relationship between NUDT1 and immune infiltration. Finally, TCGA dataset was utilized for gene set enrichment analysis (GSEA). Results NUDT1 was not only overexpressed in ccRCC but also significantly correlated with clinicopathological features (P < 0.05). K-M survival analysis showed that upregulated NUDT1 was closely related to the decrease of overall survival (OS) and progression-free survival (PFS) in ccRCC patients. Multivariate Cox regression revealed that NUDT1 was a independent prognostic indicator (HR = 1.437, 95% CI: 1.065-1.939, P=0.018). The ROC curve showed that NUDT1 had a certain accuracy in predicting the outcome of ccRCC patiens. Furthermore, a total of 150 coexpressed genes and 1,886 differentially expressed genes (DEGs) were identified. GO/KEGG and GSEA results suggested that NUDT1 and its DEGs were involved in the immune-related pathways. NUDT1 expression was positively correlated with infiltrating levels of regulatory T cells (Tregs), CD8+ T cells, follicular helper T cells, and M0 macrophages. In addition, NUDT1 was positively related to immune checkpoints, such as PD-1, LAG3, CTLA4, and CD70, in ccRCC. Conclusion NUDT1 plays a key role in the prognosis and immune cell infiltration of ccRCC patients, indicating its potential use as a prognostic biomarker and therapeutic target.
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18
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Central Stimulatory Effect of Kynurenic Acid on BDNF-TrkB Signaling and BER Enzymatic Activity in the Hippocampal CA1 Field in Sheep. Int J Mol Sci 2022; 24:ijms24010136. [PMID: 36613581 PMCID: PMC9820639 DOI: 10.3390/ijms24010136] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 12/12/2022] [Accepted: 12/16/2022] [Indexed: 12/24/2022] Open
Abstract
Deficiency of neurotrophic factors and oxidative DNA damage are common causes of many neurodegenerative diseases. Recently, the importance of kynurenic acid (KYNA), an active metabolite of tryptophan, has increased as a neuroprotective molecule in the brain. Therefore, the present study tested the hypothesis that centrally acting KYNA would positively affect: (1) brain-derived neurotrophic factor (BDNF)-tyrosine receptor kinase B (TrkB) signaling and (2) selected base excision repair (BER) pathway enzymes activities in the hippocampal CA1 field in sheep. Both lower (20 μg in total) and higher (100 μg in total) doses of KYNA infused into the third brain ventricle differentially increased the abundance of BDNF and TrkB mRNA in the CA1 field; additionally, the higher dose increased BDNF tissue concentration. The lower dose of KYNA increased mRNA expression for 8-oxoguanine glycosylase (OGG1), N-methylpurine DNA glycosylase (MPG), and thymine DNA glycosylase and stimulated the repair of 1,N6-ethenodeoxyadenosine and 3,N4-ethenodeoxy-cytosine as determined by the excision efficiency of lesioned nucleobases. The higher dose increased the abundance of OGG1 and MPG transcripts, however, its stimulatory effect on repair activity was less pronounced in all cases compared to the lower dose. The increased level of AP-endonuclease mRNA expression was dose-dependent. In conclusion, the potential neurotrophic and neuroprotective effects of KYNA in brain cells may involve stimulation of the BDNF-TrkB and BER pathways.
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19
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Li C, Xue Y, Ba X, Wang R. The Role of 8-oxoG Repair Systems in Tumorigenesis and Cancer Therapy. Cells 2022; 11:cells11233798. [PMID: 36497058 PMCID: PMC9735852 DOI: 10.3390/cells11233798] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 11/09/2022] [Accepted: 11/25/2022] [Indexed: 11/29/2022] Open
Abstract
Tumorigenesis is highly correlated with the accumulation of mutations. The abundant and extensive DNA oxidation product, 8-Oxoguanine (8-oxoG), can cause mutations if it is not repaired by 8-oxoG repair systems. Therefore, the accumulation of 8-oxoG plays an essential role in tumorigenesis. To avoid the accumulation of 8-oxoG in the genome, base excision repair (BER), initiated by 8-oxoguanine DNA glycosylase1 (OGG1), is responsible for the removal of genomic 8-oxoG. It has been proven that 8-oxoG levels are significantly elevated in cancer cells compared with cells of normal tissues, and the induction of DNA damage by some antitumor drugs involves direct or indirect interference with BER, especially through inducing the production and accumulation of reactive oxygen species (ROS), which can lead to tumor cell death. In addition, the absence of the core components of BER can result in embryonic or early post-natal lethality in mice. Therefore, targeting 8-oxoG repair systems with inhibitors is a promising avenue for tumor therapy. In this study, we summarize the impact of 8-oxoG accumulation on tumorigenesis and the current status of cancer therapy approaches exploiting 8-oxoG repair enzyme targeting, as well as possible synergistic lethality strategies involving exogenous ROS-inducing agents.
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Affiliation(s)
- Chunshuang Li
- Center for Cell Structure and Function, Key Laboratory of Animal Resistance Biology of Shandong Province, College of Life Sciences, Shandong Normal University, Jinan 250014, China
- The Key Laboratory of Molecular Epigenetics of Education, School of Life Science, Northeast Normal University, Changchun 130024, China
| | - Yaoyao Xue
- The Key Laboratory of Molecular Epigenetics of Education, School of Life Science, Northeast Normal University, Changchun 130024, China
| | - Xueqing Ba
- The Key Laboratory of Molecular Epigenetics of Education, School of Life Science, Northeast Normal University, Changchun 130024, China
- Correspondence: (X.B.); (R.W.)
| | - Ruoxi Wang
- Center for Cell Structure and Function, Key Laboratory of Animal Resistance Biology of Shandong Province, College of Life Sciences, Shandong Normal University, Jinan 250014, China
- Correspondence: (X.B.); (R.W.)
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20
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Abstract
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Oxidation of a guanine nucleotide in DNA yields an 8-oxoguanine
nucleotide (oxoG) and is a mutagenic event in the genome.
Due to different arrangements of hydrogen-bond donors and acceptors, oxoG can affect the secondary structure of nucleic acids. We
have investigated base pairing preferences of oxoG in the
core of a tetrahelical G-quadruplex structure, adopted by analogues
of d(TG4T). Using spectroscopic methods, we have shown
that G-quartets can be fully substituted with oxoG nucleobases
to form an oxoG-quartet with a revamped hydrogen-bonding
scheme. While an oxoG-quartet can be incorporated into
the G-quadruplex core without distorting the phosphodiester backbone,
larger dimensions of the central cavity change the cation localization
and exchange properties.
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Affiliation(s)
- Simon Aleksič
- Slovenian NMR Centre, National Institute of Chemistry, Hajdrihova 19, 1000 Ljubljana, Slovenia.,Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, 1000 Ljubljana, Slovenia
| | - Peter Podbevšek
- Slovenian NMR Centre, National Institute of Chemistry, Hajdrihova 19, 1000 Ljubljana, Slovenia
| | - Janez Plavec
- Slovenian NMR Centre, National Institute of Chemistry, Hajdrihova 19, 1000 Ljubljana, Slovenia.,Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, 1000 Ljubljana, Slovenia.,EN-FIST Centre of Excellence, Trg OF 13, 1000 Ljubljana, Slovenia
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21
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Platinum-based nanocomposites loaded with MTH1 inhibitor amplify oxidative damage for cancer therapy. Colloids Surf B Biointerfaces 2022; 218:112715. [PMID: 35932557 DOI: 10.1016/j.colsurfb.2022.112715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Revised: 07/10/2022] [Accepted: 07/20/2022] [Indexed: 11/22/2022]
Abstract
Photodynamic therapy (PDT) is a promising therapeutic strategy for tumor ablation by generating highly toxic reactive oxygen species (ROS) to damage DNA and other biomacromolecules. However, the local hypoxic microenvironment of the tumor and the presence of ROS-defensing system, such as the mobilization of mutt homolog 1 (MTH1) to sanitize ROS-oxidized nucleotide pool, severely limit the efficiency of PDT. Therefore, a novel tumor ablation strategy was developed that not only focused on the enhancement of ROS generation but also weakened the ROS-defensing system by inhibiting MTH1 enzyme activity. In our work, a simple one-step reduction approach was applied to enable platinum nanoparticles (Pt NPs) with catalase activity to grow in situ in the nanochannels of mesoporous silica nanoparticles (MSNs). After physical encapsulation of photosensitizer chlorin e6 (Ce6) and MTH1 inhibitor TH588, the drug loading nanoplatform was modified with an arginine-glycine-aspartic acid (RGD) functionalized liposome shell, resulting in the fabrication of amplified oxidative damage nanoplatform MSN-Pt@Ce6/TH588 @Liposome-RGD (MPCT@Li-R). The prepared MPCT@Li-R NPs could continuously catalyze the decomposition of hydrogen peroxide (H2O2) into oxygen (O2) in tumor, thus promoting the generation of singlet oxygen during PDT process for improved oxidative damage of bases. Simultaneously, acid responsive released TH588 hindered MTH1-mediated scavenging of oxidative bases, further aggravating DNA oxidative damage. Consequently, this cascade therapy strategy exhibited excellent tumor suppression efficiency both in vitro and in vivo.
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22
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Liu Y, Zhu X, Wang Z, Dai X, You C. Next-Generation Sequencing-Based Analysis of the Roles of DNA Polymerases ν and θ in the Replicative Bypass of 8-Oxo-7,8-dihydroguanine in Human Cells. ACS Chem Biol 2022; 17:2315-2319. [PMID: 35815634 DOI: 10.1021/acschembio.2c00415] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
DNA polymerase (Pol) ν and Pol θ are two specialized A-family DNA polymerases that function in the translesion synthesis of certain DNA lesions. However, the biological functions of human Pols ν and θ in cellular replicative bypass of 8-oxo-7,8-dihydroguanine (8-oxoG), an important carcinogenesis-related biomarker of oxidative DNA damage, remain unclear. Herein, we showed that depletion of Pols ν and θ in human cells could cause an elevated hypersensitivity to oxidative stress induced by hydrogen peroxide. Using next-generation sequencing-based lesion bypass and mutagenesis assay, we further demonstrated that Pols ν and θ had important roles in promoting translesion synthesis of 8-oxoG in human cells. We also found that the depletion of Pol ν, but not Pol θ, caused a substantial reduction in G → T mutation frequency for 8-oxoG. These findings provided novel insights into the involvement of A-family DNA polymerases in oxidative DNA damage response.
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Affiliation(s)
- Yini Liu
- Molecular Science and Biomedicine Laboratory, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan Provincial Key Laboratory of Biomacromolecular Chemical Biology, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Xiaowen Zhu
- Molecular Science and Biomedicine Laboratory, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan Provincial Key Laboratory of Biomacromolecular Chemical Biology, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Ziyu Wang
- Molecular Science and Biomedicine Laboratory, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan Provincial Key Laboratory of Biomacromolecular Chemical Biology, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Xiaoxia Dai
- Molecular Science and Biomedicine Laboratory, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan Provincial Key Laboratory of Biomacromolecular Chemical Biology, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Changjun You
- Molecular Science and Biomedicine Laboratory, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan Provincial Key Laboratory of Biomacromolecular Chemical Biology, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
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23
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Li J, Wang ZH, Dang YM, Li DN, Liu Z, Dai DP, Cai JP. MTH1 suppression enhances the stemness of MCF7 through upregulation of STAT3. Free Radic Biol Med 2022; 188:447-458. [PMID: 35809767 DOI: 10.1016/j.freeradbiomed.2022.06.240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 06/20/2022] [Accepted: 06/22/2022] [Indexed: 11/22/2022]
Abstract
MTH1 protein can sanitize the damaged (d)NTP pool and MTH1 inhibitors have been developed to impede the growth of rapidly proliferating tumor cells; however, the effect of MTH1 inhibition on breast cancer stemness has not been reported yet. Here, we constructed breast cancer cell lines with the stable depletion of MTH1. MTH1 suppression clearly increased the ratio of CD44+CD24-/low subpopulations and promoted the formation of tumorspheres in MCF7 and T47D cells. RNA expression profiling, RT-qPCR and Western blotting showed the upregulation of master stem cell transcription factors Sox2, Oct4 and Nanog in MTH1 knockdown cells. GSEA suggested and Western blotting verified that MTH1 knockdown increased the expression of phosphorylated STAT3 (Tyr705). Furthermore, we indirectly demonstrated that the increased concentration of 8-oxo-dGTP and 8-oxo-GTP in MTH1-knockdown cells and exogenous 8-oxoGTP, rather than 8-oxo-dGTP, could significantly increase the phosphorylation of STAT3. In conclusion, this work indicates that MTH1 inhibition increased the proportion of breast cancer stem cells (BCSCs) and promoted stemness properties in MCF7 cells.
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Affiliation(s)
- Jin Li
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, PR China
| | - Zi-Hui Wang
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, PR China; Graduate School of Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, PR China
| | - Ya-Min Dang
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, PR China; Graduate School of Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, PR China
| | - Dan-Ni Li
- The Clinical Laboratory of Beijing Hospital, Ministry of Health, Beijing, PR China
| | - Zhen Liu
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, PR China; Graduate School of Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, PR China
| | - Da-Peng Dai
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, PR China
| | - Jian-Ping Cai
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, PR China.
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24
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Disengaging the COVID-19 Clutch as a Discerning Eye Over the Inflammatory Circuit During SARS-CoV-2 Infection. Inflammation 2022; 45:1875-1894. [PMID: 35639261 PMCID: PMC9153229 DOI: 10.1007/s10753-022-01674-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 03/29/2022] [Accepted: 04/18/2022] [Indexed: 01/08/2023]
Abstract
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) causes the cytokine release syndrome (CRS) and leads to multiorgan dysfunction. Mitochondrial dynamics are fundamental to protect against environmental insults, but they are highly susceptible to viral infections. Defective mitochondria are potential sources of reactive oxygen species (ROS). Infection with SARS-CoV-2 damages mitochondria, alters autophagy, reduces nitric oxide (NO), and increases both nicotinamide adenine dinucleotide phosphate oxidases (NOX) and ROS. Patients with coronavirus disease 2019 (COVID-19) exhibited activated toll-like receptors (TLRs) and the Nucleotide-binding and oligomerization domain (NOD-), leucine-rich repeat (LRR-), pyrin domain-containing protein 3 (NLRP3) inflammasome. The activation of TLRs and NLRP3 by SARS‐CoV‐2 induces interleukin 6 (IL-6), IL-1β, IL-18, and lactate dehydrogenase (LDH). Herein, we outline the inflammatory circuit of COVID-19 and what occurs behind the scene, the interplay of NOX/ROS and their role in hypoxia and thrombosis, and the important role of ROS scavengers to reduce COVID-19-related inflammation.
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25
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Ryan BJ, Yang H, Bacurio JHT, Smith MR, Basu AK, Greenberg MM, Freudenthal BD. Structural Dynamics of a Common Mutagenic Oxidative DNA Lesion in Duplex DNA and during DNA Replication. J Am Chem Soc 2022; 144:8054-8065. [PMID: 35499923 PMCID: PMC9097547 DOI: 10.1021/jacs.2c00193] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
N6-(2-Deoxy-α,β-d-erythro-pentofuranosyl)-2,6-diamino-4-hydroxy-5-formamido pyrimidine (Fapy•dG) is a prevalent form of genomic DNA damage. Fapy•dG is formed in greater amounts under anoxic conditions than the well-studied, chemically related 7,8-dihydro-8-oxo-2'-deoxyguanosine (8-oxodGuo). Fapy•dG is more mutagenic in mammalian cells than 8-oxodGuo. A distinctive property of Fapy•dG is facile epimerization, but prior works with Fapy•dG analogues have precluded determining its effect on chemistry. We present crystallographic characterization of natural Fapy•dG in duplex DNA and as the template base for DNA polymerase β (Pol β). Fapy•dG adopts the β-anomer when base paired with cytosine but exists as a mixture of α- and β-anomers when promutagenically base paired with adenine. Rotation about the bond between the glycosidic nitrogen atom and the pyrimidine ring is also affected by the opposing nucleotide. Sodium cyanoborohydride soaking experiments trap the ring-opened Fapy•dG, demonstrating that ring opening and epimerization occur in the crystalline state. Ring opening and epimerization are facilitated by propitious water molecules that are observed in the structures. Determination of Fapy•dG mutagenicity in wild type and Pol β knockdown HEK 293T cells indicates that Pol β contributes to G → T transversions but also suppresses G → A transitions. Complementary kinetic studies have determined that Fapy•dG promotes mutagenesis by decreasing the catalytic efficiency of dCMP insertion opposite Fapy•dG, thus reducing polymerase fidelity. Kinetic studies have determined that dCMP incorporation opposite the β-anomer is ∼90 times faster than the α-anomer. This research identifies the importance of anomer dynamics, a feature unique to formamidopyrimidines, when considering the incorporation of nucleotides opposite Fapy•dG and potentially the repair of this structurally unusual lesion.
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Affiliation(s)
- Benjamin J Ryan
- Department of Biochemistry and Molecular Biology, and Department of Cancer Biology, University of Kansas Medical Center, Kansas City, Kansas 66160, United States
| | - Haozhe Yang
- Department of Chemistry, Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218, United States
| | - Jan Henric T Bacurio
- Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Mallory R Smith
- Department of Biochemistry and Molecular Biology, and Department of Cancer Biology, University of Kansas Medical Center, Kansas City, Kansas 66160, United States
| | - Ashis K Basu
- Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Marc M Greenberg
- Department of Chemistry, Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218, United States
| | - Bret D Freudenthal
- Department of Biochemistry and Molecular Biology, and Department of Cancer Biology, University of Kansas Medical Center, Kansas City, Kansas 66160, United States
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26
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8-oxoguanine and 8-oxodeoxyguanosine Biomarkers of Oxidative DNA Damage: A Review on HPLC-ECD Determination. Molecules 2022; 27:molecules27051620. [PMID: 35268721 PMCID: PMC8911600 DOI: 10.3390/molecules27051620] [Citation(s) in RCA: 37] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 02/09/2022] [Accepted: 02/11/2022] [Indexed: 11/26/2022] Open
Abstract
Reactive oxygen species (ROS) are continuously produced in living cells due to metabolic and biochemical reactions and due to exposure to physical, chemical and biological agents. Excessive ROS cause oxidative stress and lead to oxidative DNA damage. Within ROS-mediated DNA lesions, 8-oxoguanine (8-oxoG) and its nucleotide 8-oxo-2′-deoxyguanosine (8-oxodG)—the guanine and deoxyguanosine oxidation products, respectively, are regarded as the most significant biomarkers for oxidative DNA damage. The quantification of 8-oxoG and 8-oxodG in urine, blood, tissue and saliva is essential, being employed to determine the overall effects of oxidative stress and to assess the risk, diagnose, and evaluate the treatment of autoimmune, inflammatory, neurodegenerative and cardiovascular diseases, diabetes, cancer and other age-related diseases. High-performance liquid chromatography with electrochemical detection (HPLC–ECD) is largely employed for 8-oxoG and 8-oxodG determination in biological samples due to its high selectivity and sensitivity, down to the femtomolar range. This review seeks to provide an exhaustive analysis of the most recent reports on the HPLC–ECD determination of 8-oxoG and 8-oxodG in cellular DNA and body fluids, which is relevant for health research.
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27
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Volatier T, Schumacher B, Cursiefen C, Notara M. UV Protection in the Cornea: Failure and Rescue. BIOLOGY 2022; 11:biology11020278. [PMID: 35205145 PMCID: PMC8868636 DOI: 10.3390/biology11020278] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Revised: 01/28/2022] [Accepted: 01/28/2022] [Indexed: 01/07/2023]
Abstract
Simple Summary The sun is a deadly laser, and its damaging rays harm exposed tissues such as our skin and eyes. The skin’s protection and repair mechanisms are well understood and utilized in therapeutic approaches while the eye lacks such complete understanding of its defenses and therefore often lacks therapeutic support in most cases. The aim here was to document the similarities and differences between the two tissues as well as understand where current research stands on ocular, particularly corneal, ultraviolet protection. The objective is to identify what mechanisms may be best suited for future investigation and valuable therapeutic approaches. Abstract Ultraviolet (UV) irradiation induces DNA lesions in all directly exposed tissues. In the human body, two tissues are chronically exposed to UV: the skin and the cornea. The most frequent UV-induced DNA lesions are cyclobutane pyrimidine dimers (CPDs) that can lead to apoptosis or induce tumorigenesis. Lacking the protective pigmentation of the skin, the transparent cornea is particularly dependent on nucleotide excision repair (NER) to remove UV-induced DNA lesions. The DNA damage response also triggers intracellular autophagy mechanisms to remove damaged material in the cornea; these mechanisms are poorly understood despite their noted involvement in UV-related diseases. Therapeutic solutions involving xenogenic DNA-repair enzymes such as T4 endonuclease V or photolyases exist and are widely distributed for dermatological use. The corneal field lacks a similar set of tools to address DNA-lesions in photovulnerable patients, such as those with genetic disorders or recently transplanted tissue.
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Affiliation(s)
- Thomas Volatier
- Department of Ophthalmology, Faculty of Medicine and University Hospital Cologne, University of Cologne, 62, 50937 Cologne, Germany; (C.C.); (M.N.)
- Correspondence:
| | - Björn Schumacher
- Cologne Excellence Cluster for Cellular Stress Responses, Aging-Associated Diseases (CECAD) and Center for Molecular Medicine (CMMC), University of Cologne, Joseph-Stelzmann-Strasse 26, 50931 Cologne, Germany;
| | - Claus Cursiefen
- Department of Ophthalmology, Faculty of Medicine and University Hospital Cologne, University of Cologne, 62, 50937 Cologne, Germany; (C.C.); (M.N.)
- Center for Molecular Medicine Cologne (CMMC), Faculty of Medicine and University Hospital Cologne, University of Cologne, 21, 50931 Cologne, Germany
| | - Maria Notara
- Department of Ophthalmology, Faculty of Medicine and University Hospital Cologne, University of Cologne, 62, 50937 Cologne, Germany; (C.C.); (M.N.)
- Cologne Excellence Cluster for Cellular Stress Responses, Aging-Associated Diseases (CECAD) and Center for Molecular Medicine (CMMC), University of Cologne, Joseph-Stelzmann-Strasse 26, 50931 Cologne, Germany;
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28
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Lu J, Yang Y, Zhu L, Li M, Xu W, Zhang C, Cheng J, Tao L, Li Z, Zhang Y. Exposure to environmental concentrations of natural pyrethrins induces hepatotoxicity: Assessment in HepG2 cell lines and zebrafish models. CHEMOSPHERE 2022; 288:132565. [PMID: 34662635 DOI: 10.1016/j.chemosphere.2021.132565] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 10/11/2021] [Accepted: 10/11/2021] [Indexed: 06/13/2023]
Abstract
Natural pyrethrins are one variety of botanical pesticide, and are commonly used in organic and ecological agriculture. However, the hepatotoxicity of natural pyrethrins is unknown. In this study, the impact of natural pyrethrins on human HepG2 cells, which are prominent cell model for toxic-induced hepatotoxicity evaluations, was investigated in accordance with the ROS production and the mechanism of DNA damage and repair. And we report the liver toxicity of natural pyrethrins in zebrafish. Our result revealed a significant increase in ROS production, suggesting oxidative stress. Besides, the most notable genotoxic effect of oxidation-induced DNA damage was observed for natural pyrethrins, as detected by neutral comet assay and γH2AX/8-oxoG staining. As revealed by the results, oxidative DNA damage is responsible for the cytotoxic exposure of natural pyrethrins to HepG2 cells in humans. The observed damage is chronic toxicity, which may cause irreversible DNA damage and more severe toxic effects on human HepG2 cells. This can account for the complicated response to DNA impairment. Visual observations of zebrafish liver and oil red staining also demonstrated that natural pyrethrins induced liver degeneration, liver size changes and liver steatosis in zebrafish. In conclusion, the health of humans can be endangered by natural pyrethrins as a result of hepatotoxicity.
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Affiliation(s)
- Jian Lu
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China
| | - Yun Yang
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China
| | - Lianhua Zhu
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China
| | - Meng Li
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China
| | - Wenping Xu
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China
| | - Cheng Zhang
- Department of Pathology, UT Southwestern Medical Center, Dallas, TX, 75390, United States
| | - Jiagao Cheng
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China
| | - Liming Tao
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China
| | - Zhong Li
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China
| | - Yang Zhang
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China.
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29
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Tsegay PS, Hernandez D, Brache C, Chatgilialoglu C, Krokidis MG, Chapagain P, Liu Y. Incorporation of 5',8-cyclo-2'deoxyadenosines by DNA repair polymerases via base excision repair. DNA Repair (Amst) 2022; 109:103258. [PMID: 34871863 PMCID: PMC9884144 DOI: 10.1016/j.dnarep.2021.103258] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 10/30/2021] [Accepted: 11/18/2021] [Indexed: 01/31/2023]
Abstract
5',8-cyclo-2-deoxy nucleosides (cdPus) are the smallest tandem purine lesions including 5',8-cyclo-2'-deoxyadenosine (cdA) and 5',8-cyclo-2'-deoxyguanosine (cdG). They can inhibit DNA and RNA polymerases causing mutations, DNA strand breaks, and termination of DNA replication and gene transcription. cdPus can be removed by nucleotide excision repair with low efficiency allowing them to accumulate in the genome. Recent studies suggest that cdPus can be induced in damaged nucleotide pools and incorporated into the genome by DNA polymerases. However, it remains unknown if and how DNA polymerases can incorporate cdPus. In this study, we examined the incorporation of cdAs by human DNA repair polymerases, DNA polymerases β (pol β), and pol η during base excision repair. We then determined the efficiency of cdA incorporation by the polymerases using steady-state kinetics. We found that pol β and pol η incorporated cdAs opposite dT and dC with low efficiency, and incorporated cdAs were readily extended and ligated into duplex DNA. Using molecular docking analysis, we found that the 5',8-covalent bond in cdA disrupted its hydrogen bonding with a template base suggesting that the phosphodiester bond between the 3'-terminus nucleotide and the α-phosphate of cdATP were generated in the absence of hydrogen bonding. The enzyme kinetics analysis further suggests that pol β and pol η increased their substrate binding to facilitate the enzyme catalysis for cdA incorporation. Our study reveals unique mechanisms underlying the accumulation of cdPu lesions in the genome resulting from nucleotide incorporation by repair DNA polymerases.
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Affiliation(s)
- Pawlos S. Tsegay
- Biochemistry Ph.D. Program, Florida International University, Miami, FL, USA
| | - Daniela Hernandez
- Department of Chemistry and Biochemistry, Florida International University, Miami, FL, USA
| | - Christopher Brache
- Department of Chemistry and Biochemistry, Florida International University, Miami, FL, USA
| | | | - Marios G. Krokidis
- Institute of Nanoscience and Nanotechnology, N.C.S.R. “Demokritos,” 15341, Agia Paraskevi, Athens, Greece
| | - Prem Chapagain
- Department of Physics, Florida International University, Miami, FL, USA,Biomolecular Sciences Institute, Florida International University, Miami, Florida, USA
| | - Yuan Liu
- Biochemistry Ph.D. Program, Florida International University, Miami, FL, USA,Department of Chemistry and Biochemistry, Florida International University, Miami, FL, USA,Biomolecular Sciences Institute, Florida International University, Miami, Florida, USA,Correspondence:
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30
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Zhang Y, Han Y, Zou X, Xu Q, Ma F, Zhang CY. Construction of a damage site-specific fluorescent biosensor for single-molecule detection of DNA damage. Talanta 2021; 235:122809. [PMID: 34517666 DOI: 10.1016/j.talanta.2021.122809] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Revised: 08/11/2021] [Accepted: 08/14/2021] [Indexed: 02/06/2023]
Abstract
The 8-oxoguanine (8-oxoG) represents the most common DNA damage type, and it has been regarded as the oxidative stress biomarker, but the reported 8-oxoguanine assays are limited by poor specificity and low sensitivity. Herein, we demonstrate the construction of damage site-specific fluorescent biosensor for 8-oxoG assay by integrating single-molecule detection with hyperbranched signal amplification. In this assay, the 8-oxoG damages in DNA can generate free 3' OH with the assistance of formamidopyrimidine DNA glycosylase (Fpg) and polynucleotide kinase (PNK), which subsequently triggers the incorporation of abundant Cy5-labeled dUTPs via terminal deoxynucleotidyl transferase (TDT)-mediated site-specific hyperbranched nucleic acid amplification. After digestion of amplification products with nuclease treatment, abundant mononucleotide Cy5-dUTPs are produced, which will be easily monitored via single-molecule imaging and detection. The introduction of hyperbranched nucleic acid amplification and single-molecule detection can greatly improve the sensitivity to achieve a detection limit of 7.62 × 10-18 M. This biosensor is highly specific with the capability of discriminating 0.001% 8-oxoG target from the DNA mixture. Moreover, it can be applied for quantitative detection of 8-oxoG damage in genomic DNAs with a detection limit of 0.0017 ng, and even accurately quantifies the absolute number (7025 - 8506) of 8-oxoG damage base in single HeLa cell treated with 150 μM H2O2. Importantly, this biosensor can measure the 8-oxoG damage level in different cancer cell lines, facilitating the oxidative damage-associated biomedical researches and clinical diagnosis.
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Affiliation(s)
- Yan Zhang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan, 250014, China
| | - Yun Han
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan, 250014, China
| | - Xiaoran Zou
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan, 250014, China
| | - Qinfeng Xu
- School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi'an, 710021, China
| | - Fei Ma
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing, 211189, China.
| | - Chun-Yang Zhang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan, 250014, China.
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31
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Barreiro RAS, Sabbaga J, Rossi BM, Achatz MIW, Bettoni F, Camargo AA, Asprino PF, A F Galante P. Monoallelic deleterious MUTYH germline variants as a driver for tumorigenesis. J Pathol 2021; 256:214-222. [PMID: 34816434 DOI: 10.1002/path.5829] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 10/14/2021] [Accepted: 10/28/2021] [Indexed: 01/06/2023]
Abstract
MUTYH encodes a glycosylase involved in the base excision repair of DNA. Biallelic pathogenic germline variants in MUTYH cause an autosomal recessive condition known as MUTYH-associated adenomatous polyposis and consequently increase the risk of colorectal cancer. However, reports of increased cancer risk in individuals carrying only one defective MUTYH allele are controversial and based on studies involving few individuals. Here, we describe a comprehensive investigation of monoallelic pathogenic MUTYH germline variants in 10,389 cancer patients across 33 different tumour types and 117,000 healthy individuals. Our results indicate that monoallelic pathogenic MUTYH germline variants can lead to tumorigenesis through a mechanism of somatic loss of heterozygosity of the functional MUTYH allele in the tumour. We confirmed that the frequency of monoallelic pathogenic MUTYH germline variants is higher in individuals with cancer than in the general population, although this frequency is not homogeneous among tumour types. We also demonstrated that the MUTYH mutational signature is present only in tumours with loss of the functional allele and found that the characteristic MUTYH base substitution (C>A) increases stop-codon generation. We identified key genes that are affected during tumorigenesis. In conclusion, we propose that carriers of the monoallelic pathogenic MUTYH germline variant are at a higher risk of developing tumours, especially those with frequent loss of heterozygosity events, such as adrenal adenocarcinoma, although the overall risk is still low. © 2021 The Pathological Society of Great Britain and Ireland. Published by John Wiley & Sons, Ltd.
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Affiliation(s)
- Rodrigo Araujo Sequeira Barreiro
- Centro de Oncologia Molecular, Hospital Sírio-Libanês, São Paulo, Brazil.,Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, Sao Paulo, Brazil
| | - Jorge Sabbaga
- Centro de Oncologia Molecular, Hospital Sírio-Libanês, São Paulo, Brazil
| | - Benedito M Rossi
- Centro de Oncologia Molecular, Hospital Sírio-Libanês, São Paulo, Brazil
| | | | - Fabiana Bettoni
- Centro de Oncologia Molecular, Hospital Sírio-Libanês, São Paulo, Brazil
| | - Anamaria A Camargo
- Centro de Oncologia Molecular, Hospital Sírio-Libanês, São Paulo, Brazil
| | - Paula F Asprino
- Centro de Oncologia Molecular, Hospital Sírio-Libanês, São Paulo, Brazil
| | - Pedro A F Galante
- Centro de Oncologia Molecular, Hospital Sírio-Libanês, São Paulo, Brazil
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Bialkowski K, Szpila A. Specific 8-oxo-dGTPase activity of MTH1 (NUDT1) protein as a quantitative marker and prognostic factor in human colorectal cancer. Free Radic Biol Med 2021; 176:257-264. [PMID: 34624481 DOI: 10.1016/j.freeradbiomed.2021.10.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 09/23/2021] [Accepted: 10/03/2021] [Indexed: 11/27/2022]
Abstract
The MTH1 (NUDT1) gene, because it is frequently upregulated in many types of human cancers, has been considered a general marker of carcinogenesis for over two decades. The MTH1 protein hydrolyzes the oxidized mutagenic DNA precursor, 8-oxo-7,8-dihydro-2'-deoxyguanosine 5'-triphosphate (8-oxo-dGTP), to the corresponding 5'-monophosphate and inorganic pyrophosphate. This prevents its incorporation into DNA by DNA polymerases and protects cells from the accumulation of 8-oxo-dGTP-induced point mutations. Elevated MTH1 mRNA and protein in many types of human cancer indicate a worse prognosis. However, the enzymatic activity of MTH1 has remained largely uninvestigated in this context. Therefore, we have set out to determine the specific 8-oxo-dGTPase activity of MTH1 in 57 pairs of human colorectal cancers (CRC) and adjacent cancer-free tissues (CFCF). The goal was to ascertain the potential for measuring this enzymatic activity as a way to differentiate cancerous from non-cancerous specimens of the intestine, as well as defining its capabilities as a prognostic value for disease-free survival. We found that 79% of CRC tumors exhibited a higher MTH1 activity than did CFCF, with a significant 1.6-fold increase in overall median value (p < 1E-6). The 8-oxo-dGTPase in both tissues was proportional to the corresponding levels of MTH1 protein, as assayed by Western blotting. Activity higher than the ROC-optimized threshold (AUC = 0.71) indicated cancerous tissue, with a 54% sensitivity and an 83% specificity. Postoperative fate followed for up to 100 months showed that higher 8-oxo-dGTPase, in either the CFCF or the CRC tumor, clearly lowered the probability of a relapse-free survival, although borderline statistical significance (p < 0.05) was crossed only for the CFCF.
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Affiliation(s)
- Karol Bialkowski
- Department of Clinical Biochemistry, L. Rydygier Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Torun, Bydgoszcz, Poland.
| | - Anna Szpila
- Department of Clinical Biochemistry, L. Rydygier Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Torun, Bydgoszcz, Poland
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Pu Y, Yin H, Dong C, Xiang H, Wu W, Zhou B, Du D, Chen Y, Xu H. Sono-Controllable and ROS-Sensitive CRISPR-Cas9 Genome Editing for Augmented/Synergistic Ultrasound Tumor Nanotherapy. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2104641. [PMID: 34536041 DOI: 10.1002/adma.202104641] [Citation(s) in RCA: 67] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 08/10/2021] [Indexed: 12/17/2022]
Abstract
The potential of the cluster regularly interspaced short palindromic repeat (CRISPR)-associated protein 9 (Cas9)-based therapeutic genome editing is severely hampered by the difficulties in precise regulation of the in vivo activity of the CRISPR-Cas9 system. Herein, sono-controllable and reactive oxygen species (ROS)-sensitive sonosensitizer-integrated metal-organic frameworks (MOFs), denoted as P/M@CasMTH1, are developed for augmented sonodynamic therapy (SDT) efficacy using the genome-editing technology. P/M@CasMTH1 nanoparticles comprise singlet oxygen (1 O2 )-generating MOF structures anchored with CRISPR-Cas9 systems via 1 O2 -cleavable linkers, which serve not only as a delivery vector of CRISPR-Cas9 targeting MTH1, but also as a sonoregulator to spatiotemporally activate the genome editing. P/M@CasMTH1 escapes from the lysosomes, harvests the ultrasound (US) energy and converts it into abundant 1 O2 to induce SDT. The generated ROS subsequently trigger cleavage of ROS-responsive thioether bonds, thus inducing controllable release of the CRISPR-Cas9 system and initiation of genome editing. The genomic disruption of MTH1 conspicuously augments the therapeutic efficacy of SDT by destroying the self-defense system in tumor cells, thereby causing cellular apoptosis and tumor suppression. This therapeutic strategy for synergistic MTH1 disruption and abundant 1 O2 generation provides a paradigm for augmenting SDT efficacy based on the emerging nanomedicine-enabled genome-editing technology.
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Affiliation(s)
- Yinying Pu
- Center of Minimally Invasive Treatment for Tumor, Department of Medical Ultrasound, Shanghai Tenth People's Hospital, Ultrasound Research and Education Institute, Clinical Research Center for Interventional Medicine, School of Medicine, Tongji University, Shanghai Engineering Research Center of Ultrasound Diagnosis and Treatment, National Clinical Research Center for Interventional Medicine, Shanghai, 200072, China
| | - Haohao Yin
- Center of Minimally Invasive Treatment for Tumor, Department of Medical Ultrasound, Shanghai Tenth People's Hospital, Ultrasound Research and Education Institute, Clinical Research Center for Interventional Medicine, School of Medicine, Tongji University, Shanghai Engineering Research Center of Ultrasound Diagnosis and Treatment, National Clinical Research Center for Interventional Medicine, Shanghai, 200072, China
| | - Caihong Dong
- Department of Ultrasound, Zhongshan Hospital, Fudan University, and Shanghai Institute of Medical Imaging, Shanghai, 200032, P. R. China
| | - Huijing Xiang
- Shanghai Engineering Research Center of Organ Repair, Materdicine Lab, School of Life Sciences, Shanghai University, Shanghai, 200444, P. R. China
| | - Wencheng Wu
- State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, P. R. China
| | - Bangguo Zhou
- Center of Minimally Invasive Treatment for Tumor, Department of Medical Ultrasound, Shanghai Tenth People's Hospital, Ultrasound Research and Education Institute, Clinical Research Center for Interventional Medicine, School of Medicine, Tongji University, Shanghai Engineering Research Center of Ultrasound Diagnosis and Treatment, National Clinical Research Center for Interventional Medicine, Shanghai, 200072, China
| | - Dou Du
- Center of Minimally Invasive Treatment for Tumor, Department of Medical Ultrasound, Shanghai Tenth People's Hospital, Ultrasound Research and Education Institute, Clinical Research Center for Interventional Medicine, School of Medicine, Tongji University, Shanghai Engineering Research Center of Ultrasound Diagnosis and Treatment, National Clinical Research Center for Interventional Medicine, Shanghai, 200072, China
| | - Yu Chen
- Shanghai Engineering Research Center of Organ Repair, Materdicine Lab, School of Life Sciences, Shanghai University, Shanghai, 200444, P. R. China
| | - Huixiong Xu
- Center of Minimally Invasive Treatment for Tumor, Department of Medical Ultrasound, Shanghai Tenth People's Hospital, Ultrasound Research and Education Institute, Clinical Research Center for Interventional Medicine, School of Medicine, Tongji University, Shanghai Engineering Research Center of Ultrasound Diagnosis and Treatment, National Clinical Research Center for Interventional Medicine, Shanghai, 200072, China
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Kaur D, Behl T, Sehgal A, Singh S, Sharma N, Chigurupati S, Alhowail A, Abdeen A, Ibrahim SF, Vargas-De-La-Cruz C, Sachdeva M, Bhatia S, Al-Harrasi A, Bungau S. Decrypting the potential role of α-lipoic acid in Alzheimer's disease. Life Sci 2021; 284:119899. [PMID: 34450170 DOI: 10.1016/j.lfs.2021.119899] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 08/18/2021] [Accepted: 08/19/2021] [Indexed: 12/20/2022]
Abstract
Alzheimer's disease (AD) is one of the most prevalent neurodegenerative diseases with motor disturbances, cognitive decline, and behavioral impairment. It is characterized by the extracellular aggregation of amyloid-β plaques and the intracellular accumulation of tau protein. AD patients show a cognitive decline, which has been associated with oxidative stress, as well as mitochondrial dysfunction. Alpha-lipoic acid (α-LA), a natural antioxidant present in food and used as a dietary supplement, has been considered a promising agent for the prevention or treatment of neurodegenerative disorders. Despite multiple preclinical studies indicating beneficial effects of α-LA in memory functioning, and pointing to its neuroprotective effects, to date only a few studies have examined its effects in humans. Studies performed in animal models of memory loss associated with aging and AD have shown that α-LA improves memory in a variety of behavioral paradigms. Furthermore, molecular mechanisms underlying α-LA effects have also been investigated. Accordingly, α-LA shows antioxidant, antiapoptotic, anti-inflammatory, glioprotective, metal chelating properties in both in vivo and in vitro studies. In addition, it has been shown that α-LA reverses age-associated loss of neurotransmitters and their receptors. The review article aimed at summarizing and discussing the main studies investigating the neuroprotective effects of α-LA on cognition as well as its molecular effects, to improve the understanding of the therapeutic potential of α-LA in patients suffering from neurodegenerative disorders, supporting the development of clinical trials with α-LA.
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Affiliation(s)
- Dapinder Kaur
- Chitkara College of Pharmacy, Chitkara University, Punjab, India
| | - Tapan Behl
- Chitkara College of Pharmacy, Chitkara University, Punjab, India.
| | - Aayush Sehgal
- Chitkara College of Pharmacy, Chitkara University, Punjab, India
| | - Sukhbir Singh
- Chitkara College of Pharmacy, Chitkara University, Punjab, India
| | - Neelam Sharma
- Chitkara College of Pharmacy, Chitkara University, Punjab, India
| | - Sridevi Chigurupati
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, Qassim University, Buraidah, Saudi Arabia
| | - Ahmed Alhowail
- Department of Pharmacology and Toxicology, College of Pharmacy, Qassim University, Buraidah, Saudi Arabia
| | - Ahmed Abdeen
- Department of Forensic Medicine and Toxicology, Faculty of Veterinary Medicine, Benha University, Toukh, Egypt; Center of Excellence for Screening of Environmental Contaminants, Benha University, Toukh, Egypt
| | - Samah F Ibrahim
- Clinical Sciences Department, College of Medicine, Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia; Forensic Medicine and Clinical Toxicology Department, College of Medicine, Cairo University, Cairo, Egypt
| | - Celia Vargas-De-La-Cruz
- Faculty of Pharmacy and Biochemistry, Academic Department of Pharmacology, Bromatology and Toxicology, Centro Latinoamericano de Ensenanza e Investigacion en Bacteriologia Alimentaria, Universidad Nacinol Mayor de San Marcos, Lima, Peru; E-Health Research Center, Universidad de Ciencias y Humanidades, Lima, Peru
| | - Monika Sachdeva
- Fatima College of Health Sciences, Alain, United Arab Emirates
| | - Saurabh Bhatia
- Natural & Medical Sciences Research Center, University of Nizwa, Nizwa, Oman; School of Health Science, University of Petroleum and Energy Studies, Dehradun, Uttarakhand, India
| | - Ahmed Al-Harrasi
- Natural & Medical Sciences Research Center, University of Nizwa, Nizwa, Oman
| | - Simona Bungau
- Department of Pharmacy, Faculty of Medicine and Pharmacy, University of Oradea, Oradea, Romania
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35
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"ON-OFF-ON" fluorescence switches based on N,S-doped carbon dots: Facile hydrothermal growth, selective detection of Hg 2+, and as a reversive probe for guanine. Anal Chim Acta 2021; 1183:338977. [PMID: 34627517 DOI: 10.1016/j.aca.2021.338977] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 08/20/2021] [Accepted: 08/20/2021] [Indexed: 11/24/2022]
Abstract
Water contamination due to heavy metal ions has become a major environmental problem worldwide. In this work, "on-off-on" fluorescence switches comprising N,S-doped carbon dots (N,S-CDs) have been developed for selective recognition of Hg2+ and as reversive probes for guanine. N,S-CDs were synthesized in a facile one-step hydrothermal approach using citric acid and methionine as precursors. The synthesized N,S-CDs display fluorescence with excitation/emission maxima of 370/440 nm and a quantum yield of 32.5%. Under the variable pH (2-12), the fluorescent N,S-CDs with a linear range from 0.05 to 100 μM displayed selective discrimination for Hg2+ with the limit of 6.24 nM over several other cations, anions, and neutral analytes resulting in the quenching of fluorescence response. Furthermore, the addition of guanine at the LOD of 6.4 nM can restore N,S-CDs' fluorescence in a reversible manner. For this kind of fluorescence switch, its purposed applications on environmental samples are employed successfully to detect Hg2+ in tap water and river water.
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Li XY, Deng FA, Zheng RR, Liu LS, Liu YB, Kong RJ, Chen AL, Yu XY, Li SY, Cheng H. Carrier Free Photodynamic Synergists for Oxidative Damage Amplified Tumor Therapy. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2102470. [PMID: 34480417 DOI: 10.1002/smll.202102470] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 06/26/2021] [Indexed: 06/13/2023]
Abstract
Tumor cells adapt to excessive oxidative stress by actuating reactive oxygen species (ROS)-defensing system, leading to a resistance to oxidation therapy. In this work, self-delivery photodynamic synergists (designated as PhotoSyn) are developed for oxidative damage amplified tumor therapy. Specifically, PhotoSyn are fabricated by the self-assembly of chlorine e6 (Ce6) and TH588 through π-π stacking and hydrophobic interactions. Without additional carriers, nanoscale PhotoSyn possess an extremely high drug loading rate (up to 100%) and they are found to be fairly stable in aqueous phase with a uniform size distribution. Intravenously injected PhotoSyn prefer to accumulate at tumor sites for effective cellular uptake. More importantly, TH588-mediated MTH1 inhibition could destroy the ROS-defensing system of tumor cells by preventing the elimination of 8-oxo-2'-deoxyguanosine triphosphate (8-oxo-dG), thereby exacerbating the oxidative DNA damage induced by the photodynamic therapy (PDT) of Ce6 under light irradiation. As a consequence, PhotoSyn exhibit enhanced photo toxicity and a significant antitumor effect. This amplified oxidative damage strategy improves the PDT efficiency with a reduced side effect by increasing the lethality of ROS without generating superabundant ROS, which would provide a new insight for developing self-delivery nanoplatforms in photodynamic tumor therapy in clinic.
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Affiliation(s)
- Xin-Yu Li
- School of Biomedical Engineering & Guangdong Provincial Key Laboratory of Construction and Detection in Tissue Engineering, Southern Medical University, Guangzhou, 510515, P. R. China
| | - Fu-An Deng
- School of Pharmaceutical Sciences, Guangzhou Medical University, Guangzhou, 511436, P. R. China
| | - Rong-Rong Zheng
- School of Pharmaceutical Sciences, Guangzhou Medical University, Guangzhou, 511436, P. R. China
| | - Ling-Shan Liu
- School of Biomedical Engineering & Guangdong Provincial Key Laboratory of Construction and Detection in Tissue Engineering, Southern Medical University, Guangzhou, 510515, P. R. China
| | - Yi-Bin Liu
- School of Pharmaceutical Sciences, Guangzhou Medical University, Guangzhou, 511436, P. R. China
| | - Ren-Jiang Kong
- School of Biomedical Engineering & Guangdong Provincial Key Laboratory of Construction and Detection in Tissue Engineering, Southern Medical University, Guangzhou, 510515, P. R. China
| | - A-Li Chen
- School of Pharmaceutical Sciences, Guangzhou Medical University, Guangzhou, 511436, P. R. China
| | - Xi-Yong Yu
- School of Pharmaceutical Sciences, Guangzhou Medical University, Guangzhou, 511436, P. R. China
| | - Shi-Ying Li
- School of Pharmaceutical Sciences, Guangzhou Medical University, Guangzhou, 511436, P. R. China
| | - Hong Cheng
- School of Biomedical Engineering & Guangdong Provincial Key Laboratory of Construction and Detection in Tissue Engineering, Southern Medical University, Guangzhou, 510515, P. R. China
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Katerji M, Duerksen-Hughes PJ. DNA damage in cancer development: special implications in viral oncogenesis. Am J Cancer Res 2021; 11:3956-3979. [PMID: 34522461 PMCID: PMC8414375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Accepted: 02/04/2021] [Indexed: 06/13/2023] Open
Abstract
DNA lesions arise from a combination of physiological/metabolic sources and exogenous environmental influences. When left unrepaired, these alterations accumulate in the cells and can give rise to mutations that change the function of important proteins (i.e. tumor suppressors, oncoproteins), or cause chromosomal rearrangements (i.e. gene fusions) that also result in the deregulation of key cellular molecules. Progressive acquisition of such genetic changes promotes uncontrolled cell proliferation and evasion of cell death, and hence plays a key role in carcinogenesis. Another less-studied consequence of DNA damage accumulating in the host genome is the integration of oncogenic DNA viruses such as Human papillomavirus, Merkel cell polyomavirus, and Hepatitis B virus. This critical step of viral-induced carcinogenesis is thought to be particularly facilitated by DNA breaks in both viral and host genomes. Therefore, the impact of DNA damage on carcinogenesis is magnified in the case of such oncoviruses via the additional effect of increasing integration frequency. In this review, we briefly present the various endogenous and exogenous factors that cause different types of DNA damage. Next, we discuss the contribution of these lesions in cancer development. Finally, we examine the amplified effect of DNA damage in viral-induced oncogenesis and summarize the limited data existing in the literature related to DNA damage-induced viral integration. To conclude, additional research is needed to assess the DNA damage pathways involved in the transition from viral infection to cancer. Discovering that a certain DNA damaging agent increases the likelihood of viral integration will enable the development of prophylactic and therapeutic strategies designed specifically to prevent such integration, with an ultimate goal of reducing or eliminating these viral-induced malignancies.
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Affiliation(s)
- Meghri Katerji
- Department of Basic Science, Loma Linda University School of Medicine Loma Linda, CA 92354, USA
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Barchiesi A, Bazzani V, Jabczynska A, Borowski LS, Oeljeklaus S, Warscheid B, Chacinska A, Szczesny RJ, Vascotto C. DNA Repair Protein APE1 Degrades Dysfunctional Abasic mRNA in Mitochondria Affecting Oxidative Phosphorylation. J Mol Biol 2021; 433:167125. [PMID: 34224750 DOI: 10.1016/j.jmb.2021.167125] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 06/25/2021] [Accepted: 06/26/2021] [Indexed: 11/19/2022]
Abstract
APE1 is a multifunctional protein which plays a central role in the maintenance of nuclear and mitochondrial genomes repairing DNA lesions caused by oxidative and alkylating agents. In addition, it works as a redox signaling protein regulating gene expression by interacting with many transcriptional factors. Apart from these canonical activities, recent studies have shown that APE1 is also enzymatically active on RNA molecules. The present study unveils for the first time a new role of the mitochondrial form of APE1 protein in the metabolism of RNA in mitochondria. Our data demonstrate that APE1 is associated with mitochondrial messenger RNA and exerts endoribonuclease activity on abasic sites. Loss of APE1 results in the accumulation of damaged mitochondrial mRNA species, determining impairment in protein translation and reduced expression of mitochondrial-encoded proteins, finally leading to less efficient mitochondrial respiration. Altogether, our data demonstrate that APE1 plays an active role in the degradation of the mitochondrial mRNA and has a profound impact on mitochondrial well-being.
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Affiliation(s)
| | | | - Agata Jabczynska
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Pawinskiego 5A, 02-106 Warsaw, Poland
| | - Lukasz S Borowski
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Pawinskiego 5A, 02-106 Warsaw, Poland; Faculty of Biology, Institute of Genetics and Biotechnology, University of Warsaw, Pawinskiego 5A, 02-106 Warsaw, Poland
| | - Silke Oeljeklaus
- Biochemistry and Functional Proteomics, Institute of Biology II, Faculty of Biology, University of Freiburg, 79104 Freiburg, Germany
| | - Bettina Warscheid
- Biochemistry and Functional Proteomics, Institute of Biology II, Faculty of Biology, University of Freiburg, 79104 Freiburg, Germany; Signalling Research Centres BIOSS and CIBSS, University of Freiburg, Germany
| | - Agnieszka Chacinska
- Laboratory of Mitochondrial Biogenesis, Centre of New Technologies, University of Warsaw, 02-097 Warsaw, Poland; ReMedy International Research Agenda Unit, Centre of New Technologies, University of Warsaw, 02-097 Warsaw, Poland
| | - Roman J Szczesny
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Pawinskiego 5A, 02-106 Warsaw, Poland
| | - Carlo Vascotto
- Department of Medicine, University of Udine, 33100 Udine, Italy; Laboratory of Mitochondrial Biogenesis, Centre of New Technologies, University of Warsaw, 02-097 Warsaw, Poland.
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Miclot T, Corbier C, Terenzi A, Hognon C, Grandemange S, Barone G, Monari A. Forever Young: Structural Stability of Telomeric Guanine Quadruplexes in the Presence of Oxidative DNA Lesions*. Chemistry 2021; 27:8865-8874. [PMID: 33871121 DOI: 10.1002/chem.202100993] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Indexed: 01/13/2023]
Abstract
Human telomeric DNA, in G-quadruplex (G4) conformation, is characterized by a remarkable structural stability that confers it the capacity to resist to oxidative stress producing one or even clustered 8-oxoguanine (8oxoG) lesions. We present a combined experimental/computational investigation, by using circular dichroism in aqueous solutions, cellular immunofluorescence assays and molecular dynamics simulations, that identifies the crucial role of the stability of G4s to oxidative lesions, related also to their biological role as inhibitors of telomerase, an enzyme overexpressed in most cancers associated to oxidative stress.
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Affiliation(s)
- Tom Miclot
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies, Università degli Studi di Palermo, Viale delle Scienze, 90128, Palermo, Italy.,Université de Lorraine and CNRS, LPCT UMR 7019, 54000, Nancy, France
| | - Camille Corbier
- Université de Lorraine and CNRS, CRAN UMR 7039, 54000, Nancy, France
| | - Alessio Terenzi
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies, Università degli Studi di Palermo, Viale delle Scienze, 90128, Palermo, Italy
| | - Cécilia Hognon
- Université de Lorraine and CNRS, LPCT UMR 7019, 54000, Nancy, France
| | | | - Giampaolo Barone
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies, Università degli Studi di Palermo, Viale delle Scienze, 90128, Palermo, Italy
| | - Antonio Monari
- Université de Lorraine and CNRS, LPCT UMR 7019, 54000, Nancy, France
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Barciszewska AM. Elucidating of oxidative distress in COVID-19 and methods of its prevention. Chem Biol Interact 2021; 344:109501. [PMID: 33974898 PMCID: PMC8106523 DOI: 10.1016/j.cbi.2021.109501] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Revised: 04/22/2021] [Accepted: 04/29/2021] [Indexed: 12/22/2022]
Abstract
The pandemic of SARS-CoV-2 stimulates significant efforts and approaches to understand its global spread. Although the recent introduction of the vaccine is a crucial prophylactic step, the effective treatment for SARS-CoV-2 is still undiscovered. An in-depth analysis of symptoms and clinical parameters, as well as molecular changes, is necessary to comprehend COVID-19 and propose a remedy for affected people to fight that disease. The analysis of available clinical data and SARS-CoV-2 infection markers underlined the main pathogenic process in COVID-19 is cytokine storm and inflammation. That led us to suggest that the most important pathogenic feature of SARS-CoV-2 leading to COVID-19 is oxidative stress and cellular damage stimulated by iron, a source of Fenton reaction and its product hydroxyl radical (•OH), the most reactive ROS with t1/2–10−9s. Therefore we suggest some scavenging agents are a reasonable choice for overcoming its toxic effect and can be regarded as a treatment for the disease on the molecular level.
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Affiliation(s)
- Anna-Maria Barciszewska
- Intraoperative Imaging Unit, Chair and Department of Neurosurgery and Neurotraumatology, Karol Marcinkowski University of Medical Sciences, Przybyszewskiego 49, 60-355, Poznan, Poland; Department of Neurosurgery and Neurotraumatology, Heliodor Swiecicki Clinical Hospital, Przybyszewskiego 49, 60-355, Poznan, Poland.
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41
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Oka S, Leon J, Sakumi K, Abolhassani N, Sheng Z, Tsuchimoto D, LaFerla FM, Nakabeppu Y. MTH1 and OGG1 maintain a low level of 8-oxoguanine in Alzheimer's brain, and prevent the progression of Alzheimer's pathogenesis. Sci Rep 2021; 11:5819. [PMID: 33758207 PMCID: PMC7988129 DOI: 10.1038/s41598-021-84640-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Accepted: 02/16/2021] [Indexed: 02/06/2023] Open
Abstract
8-Oxoguanine (8-oxoG), a major oxidative base lesion, is highly accumulated in Alzheimer’s disease (AD) brains during the pathogenic process. MTH1 hydrolyzes 8-oxo-dGTP to 8-oxo-dGMP, thereby avoiding 8-oxo-dG incorporation into DNA. 8-OxoG DNA glycosylase-1 (OGG1) excises 8-oxoG paired with cytosine in DNA, thereby minimizing 8-oxoG accumulation in DNA. Levels of MTH1 and OGG1 are significantly reduced in the brains of sporadic AD cases. To understand how 8-oxoG accumulation in the genome is involved in AD pathogenesis, we established an AD mouse model with knockout of Mth1 and Ogg1 genes in a 3xTg-AD background. MTH1 and OGG1 deficiency increased 8-oxoG accumulation in nuclear and, to a lesser extent, mitochondrial genomes, causing microglial activation and neuronal loss with impaired cognitive function at 4–5 months of age. Furthermore, minocycline, which inhibits microglial activation and reduces neuroinflammation, markedly decreased the nuclear accumulation of 8-oxoG in microglia, and inhibited microgliosis and neuronal loss. Gene expression profiling revealed that MTH1 and OGG1 efficiently suppress progression of AD by inducing various protective genes against AD pathogenesis initiated by Aß/Tau accumulation in 3xTg-AD brain. Our findings indicate that efficient suppression of 8-oxoG accumulation in brain genomes is a new approach for prevention and treatment of AD.
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Affiliation(s)
- Sugako Oka
- Division of Neurofunctional Genomics, Department of Immunobiology and Neuroscience, Medical Institute of Bioregulation, Kyushu University, Fukuoka, 812-8582, Japan.,Department of Cancer Biology, University of Kansas Medical Center, Kansas City, KS, 66010, USA
| | - Julio Leon
- Division of Neurofunctional Genomics, Department of Immunobiology and Neuroscience, Medical Institute of Bioregulation, Kyushu University, Fukuoka, 812-8582, Japan.,Laboratory for Advanced Genomics Circuit, RIKEN Center for Integrative Medical Sciences, Yokohama, 230-0045, Japan
| | - Kunihiko Sakumi
- Division of Neurofunctional Genomics, Department of Immunobiology and Neuroscience, Medical Institute of Bioregulation, Kyushu University, Fukuoka, 812-8582, Japan
| | - Nona Abolhassani
- Division of Neurofunctional Genomics, Department of Immunobiology and Neuroscience, Medical Institute of Bioregulation, Kyushu University, Fukuoka, 812-8582, Japan
| | - Zijing Sheng
- Division of Neurofunctional Genomics, Department of Immunobiology and Neuroscience, Medical Institute of Bioregulation, Kyushu University, Fukuoka, 812-8582, Japan
| | - Daisuke Tsuchimoto
- Division of Neurofunctional Genomics, Department of Immunobiology and Neuroscience, Medical Institute of Bioregulation, Kyushu University, Fukuoka, 812-8582, Japan
| | - Frank M LaFerla
- Department of Neurobiology and Behavior, University of California, Irvine, CA, 92697, USA
| | - Yusaku Nakabeppu
- Division of Neurofunctional Genomics, Department of Immunobiology and Neuroscience, Medical Institute of Bioregulation, Kyushu University, Fukuoka, 812-8582, Japan.
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42
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Schniertshauer D, Gebhard D, Bergemann J. Real-time Base Excision Repair Assay to Measure the Activity of the 8-oxoguanine DNA Glycosylase 1 in Isolated Mitochondria of Human Skin Fibroblasts. Bio Protoc 2021; 11:e3954. [PMID: 33855116 DOI: 10.21769/bioprotoc.3954] [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: 08/20/2020] [Revised: 01/18/2021] [Accepted: 01/20/2021] [Indexed: 11/02/2022] Open
Abstract
7,8-dihydro-8-oxoguanine (8-oxoG) is one of the most common and mutagenic oxidative DNA damages induced by reactive oxygen species (ROS). Since ROS is mainly produced in the inner membranes of the mitochondria, these organelles and especially the mitochondrial DNA (mtDNA) contained therein are particularly affected by this damage. Insufficient elimination of 8-oxoG can lead to mutations and thus to severe mitochondrial dysfunctions. To eliminate 8-oxoG, the human body uses the enzyme 8-oxoguanine DNA glycosylase 1 (OGG1), which is the main antagonist to oxidative damage to DNA. However, previous work suggests that the activity of the human OGG1 (hOGG1) decreases with age, leading to an age-related accumulation of 8-oxoG. A better understanding of the exact mechanisms of hOGG1 could lead to the discovery of new targets and thus be of great importance for the development of preventive therapies. Because of this, we developed a real-time base excision repair assay with a specially designed double-stranded reporter oligonucleotides to measure the activity of hOGG1 in lysates of isolated mitochondria. This system presented here differs from the classical assays, in which an endpoint determination is performed via a denaturing acrylamide gel, by the possibility to measure the hOGG1 activity in real-time. In addition, to determine the activity of each enzymatic step (N-glycosylase and AP-lyase activity) of this bifunctional enzyme, a melting curve analysis can also be performed. After isolation of mitochondria from human fibroblasts using various centrifugation steps, they are lysed and then incubated with specially designed reporter oligonucleotides. The subsequent measurement of hOGG1 activity is performed in a conventional real-time PCR system.
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Affiliation(s)
- Daniel Schniertshauer
- Department of Life Sciences, Albstadt-Sigmaringen University of Applied Sciences, Sigmaringen, Germany
| | - Daniel Gebhard
- Department of Life Sciences, Albstadt-Sigmaringen University of Applied Sciences, Sigmaringen, Germany
| | - Jörg Bergemann
- Department of Life Sciences, Albstadt-Sigmaringen University of Applied Sciences, Sigmaringen, Germany
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43
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Chao MR, Evans MD, Hu CW, Ji Y, Møller P, Rossner P, Cooke MS. Biomarkers of nucleic acid oxidation - A summary state-of-the-art. Redox Biol 2021; 42:101872. [PMID: 33579665 PMCID: PMC8113048 DOI: 10.1016/j.redox.2021.101872] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 01/12/2021] [Accepted: 01/15/2021] [Indexed: 12/12/2022] Open
Abstract
Oxidatively generated damage to DNA has been implicated in the pathogenesis of a wide variety of diseases. Increasingly, interest is also focusing upon the effects of damage to the other nucleic acids, RNA and the (2′-deoxy-)ribonucleotide pools, and evidence is growing that these too may have an important role in disease. LC-MS/MS has the ability to provide absolute quantification of specific biomarkers, such as 8-oxo-7,8-dihydro-2′-deoxyGuo (8-oxodG), in both nuclear and mitochondrial DNA, and 8-oxoGuo in RNA. However, significant quantities of tissue are needed, limiting its use in human biomonitoring studies. In contrast, the comet assay requires much less material, and as little as 5 μL of blood may be used, offering a minimally invasive means of assessing oxidative stress in vivo, but this is restricted to nuclear DNA damage only. Urine is an ideal matrix in which to non-invasively study nucleic acid-derived biomarkers of oxidative stress, and considerable progress has been made towards robustly validating these measurements, not least through the efforts of the European Standards Committee on Urinary (DNA) Lesion Analysis. For urine, LC-MS/MS is considered the gold standard approach, and although there have been improvements to the ELISA methodology, this is largely limited to 8-oxodG. Emerging DNA adductomics approaches, which either comprehensively assess the totality of adducts in DNA, or map DNA damage across the nuclear and mitochondrial genomes, offer the potential to considerably advance our understanding of the mechanistic role of oxidatively damaged nucleic acids in disease. Oxidatively damaged nucleic acids are implicated in the pathogenesis of disease. LC-MS/MS, comet assay and ELISA are often used to study oxidatively damaged DNA. Urinary oxidatively damaged nucleic acids non-invasively reflect oxidative stress. DNA adductomics will aid understanding the role of ROS damaged DNA in disease.
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Affiliation(s)
- Mu-Rong Chao
- Department of Occupational Safety and Health, Chung Shan Medical University, Taichung, 402, Taiwan; Department of Occupational Medicine, Chung Shan Medical University Hospital, Taichung, 402, Taiwan
| | - Mark D Evans
- Leicester School of Allied Health Sciences, Faculty of Health & Life Sciences, De Montfort University, The Gateway, Leicester, LE1 9BH, United Kingdom
| | - Chiung-Wen Hu
- Department of Public Health, Chung Shan Medical University, Taichung, 402, Taiwan
| | - Yunhee Ji
- Department of Environmental Health Sciences, Florida International University, Miami, FL, 33199, USA
| | - Peter Møller
- Section of Environmental Health, Department of Public Health, University of Copenhagen, Øster Farimagsgade 5A, DK, 1014, Copenhagen K, Denmark
| | - Pavel Rossner
- Department of Nanotoxicology and Molecular Epidemiology, Institute of Experimental Medicine of the CAS, 142 20, Prague, Czech Republic
| | - Marcus S Cooke
- Oxidative Stress Group, Department of Cell Biology, Microbiology and Molecular Biology, University of South Florida, Tampa, FL, 33620, USA.
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Komakula SSB, Blaze B, Ye H, Dobrzyn A, Sampath H. A Novel Role for the DNA Repair Enzyme 8-Oxoguanine DNA Glycosylase in Adipogenesis. Int J Mol Sci 2021; 22:ijms22031152. [PMID: 33503804 PMCID: PMC7865743 DOI: 10.3390/ijms22031152] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 01/05/2021] [Accepted: 01/14/2021] [Indexed: 12/13/2022] Open
Abstract
Cells sustain constant oxidative stress from both exogenous and endogenous sources. When unmitigated by antioxidant defenses, reactive oxygen species damage cellular macromolecules, including DNA. Oxidative lesions in both nuclear and mitochondrial DNA are repaired via the base excision repair (BER) pathway, initiated by DNA glycosylases. We have previously demonstrated that the BER glycosylase 8-oxoguanine DNA glycosylase (OGG1) plays a novel role in body weight maintenance and regulation of adiposity. Specifically, mice lacking OGG1 (Ogg1−/−) are prone to increased fat accumulation with age and consumption of hypercaloric diets. Conversely, transgenic animals with mitochondrially-targeted overexpression of OGG1 (Ogg1Tg) are resistant to age- and diet-induced obesity. Given these phenotypes of altered adiposity in the context of OGG1 genotype, we sought to determine if OGG1 plays a cell-intrinsic role in adipocyte maturation and lipid accumulation. Here, we report that preadipocytes from Ogg1−/− mice differentiate more efficiently and accumulate more lipids than those from wild-type animals. Conversely, OGG1 overexpression significantly blunts adipogenic differentiation and lipid accretion in both pre-adipocytes from Ogg1Tg mice, as well as in 3T3-L1 cells with adenovirus-mediated OGG1 overexpression. Mechanistically, changes in adipogenesis are accompanied by significant alterations in cellular PARylation, corresponding with OGG1 genotype. Specifically, deletion of OGG1 reduces protein PARylation, concomitant with increased adipogenic differentiation, while OGG1 overexpression significantly increases PARylation and blunts adipogenesis. Collectively, these data indicate a novel role for OGG1 in modulating adipocyte differentiation and lipid accretion. These findings have important implications to our knowledge of the fundamental process of adipocyte differentiation, as well as to our understanding of lipid-related diseases such as obesity.
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Affiliation(s)
- Sai Santosh Babu Komakula
- Rutgers Center for Lipid Research, New Jersey Institute for Food, Nutrition, and Health, Rutgers University, New Brunswick, NJ 08901, USA; (S.S.B.K.); (B.B.); (H.Y.)
- Laboratory of Cell Signaling and Metabolic Disorders, Nencki Institute of Experimental Biology, 02-093 Warsaw, Poland;
| | - Bhavya Blaze
- Rutgers Center for Lipid Research, New Jersey Institute for Food, Nutrition, and Health, Rutgers University, New Brunswick, NJ 08901, USA; (S.S.B.K.); (B.B.); (H.Y.)
- Department of Nutritional Sciences, Rutgers University, New Brunswick, NJ 08901, USA
| | - Hong Ye
- Rutgers Center for Lipid Research, New Jersey Institute for Food, Nutrition, and Health, Rutgers University, New Brunswick, NJ 08901, USA; (S.S.B.K.); (B.B.); (H.Y.)
| | - Agnieszka Dobrzyn
- Laboratory of Cell Signaling and Metabolic Disorders, Nencki Institute of Experimental Biology, 02-093 Warsaw, Poland;
| | - Harini Sampath
- Rutgers Center for Lipid Research, New Jersey Institute for Food, Nutrition, and Health, Rutgers University, New Brunswick, NJ 08901, USA; (S.S.B.K.); (B.B.); (H.Y.)
- Department of Nutritional Sciences, Rutgers University, New Brunswick, NJ 08901, USA
- Center for Microbiome, Nutrition, and Health, New Jersey Institute for Food, Nutrition, and Health, Rutgers University, New Brunswick, NJ 08901, USA
- Correspondence:
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45
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Wei S, Zhang Z, Liu S, Wang Y. Theoretical insight into 7,8-dihydrogen-8-oxoguanine radical cation deprotonation. NEW J CHEM 2021. [DOI: 10.1039/d1nj01653a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The pKa values of reactive protons in 8-oxoG˙+ and potential energy profiles for 8-oxoG radical cation deprotonation reaction (N1–H and N7–H) were firstly calculated.
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Affiliation(s)
- Simin Wei
- State Key Laboratory of Research & Development of Characteristic Qin Medicine Resources (Cultivation)
- Co-Construction Collaborative Innovation Center for Chinese Medicine Resources Industrialization by Shaanxi & Education Ministry
- Shaanxi University of Chinese Medicine
- Xianyang 712083
- China
| | - Zhenhua Zhang
- School of Chemistry and Chemical Engineering
- Linyi University
- Linyi 276005
- China
| | - Shijun Liu
- State Key Laboratory of Research & Development of Characteristic Qin Medicine Resources (Cultivation)
- Co-Construction Collaborative Innovation Center for Chinese Medicine Resources Industrialization by Shaanxi & Education Ministry
- Shaanxi University of Chinese Medicine
- Xianyang 712083
- China
| | - Yinghui Wang
- College of Science
- Chang’an University
- Xi’an 710064
- China
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46
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Ming L, Cheng K, Chen Y, Yang R, Chen D. Enhancement of tumor lethality of ROS in photodynamic therapy. Cancer Med 2021; 10:257-268. [PMID: 33141513 PMCID: PMC7826450 DOI: 10.1002/cam4.3592] [Citation(s) in RCA: 62] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 10/10/2020] [Accepted: 10/12/2020] [Indexed: 12/18/2022] Open
Abstract
In the process of photodynamic therapy (PDT) treatment of tumors, reactive oxygen species (ROS) plays a key role in destroying tumor tissues. However, traditional PDT often has limited ROS killing capacity due to hypoxia in the tumor microenvironment (TME) or obstruction by the ROS defense system, resulting in poor efficacy. Therefore, enhancing the killing effect of ROS on tumors is the core of enhancing the anti-tumor effect of PDT. In recent years, many studies have developed a series of strategies to enhance the ability of ROS to kill tumors in view of the limitations of the TME on PDT. This article summarizes the commonly used or innovative strategies in recent years, including not only frequently used methods for hypoxia in the TME but also innovative strategies to inhibit the ROS defense system.
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Affiliation(s)
- Lan Ming
- Research Institute for Reproductive Health and Genetic DiseasesThe Affiliated Wuxi Maternity and Child Health Care Hospital of Nanjing Medical UniversityWuxiChina
| | - Kai Cheng
- Research Institute for Reproductive Health and Genetic DiseasesThe Affiliated Wuxi Maternity and Child Health Care Hospital of Nanjing Medical UniversityWuxiChina
| | - Yu Chen
- Research Institute for Reproductive Health and Genetic DiseasesThe Affiliated Wuxi Maternity and Child Health Care Hospital of Nanjing Medical UniversityWuxiChina
| | - Rui Yang
- Research Institute for Reproductive Health and Genetic DiseasesThe Affiliated Wuxi Maternity and Child Health Care Hospital of Nanjing Medical UniversityWuxiChina
| | - Daozhen Chen
- Research Institute for Reproductive Health and Genetic DiseasesThe Affiliated Wuxi Maternity and Child Health Care Hospital of Nanjing Medical UniversityWuxiChina
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47
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Mehling R, Schwenck J, Lemberg C, Trautwein C, Zizmare L, Kramer D, Müller A, Fehrenbacher B, Gonzalez-Menendez I, Quintanilla-Martinez L, Schröder K, Brandes RP, Schaller M, Ruf W, Eichner M, Ghoreschi K, Röcken M, Pichler BJ, Kneilling M. Immunomodulatory role of reactive oxygen species and nitrogen species during T cell-driven neutrophil-enriched acute and chronic cutaneous delayed-type hypersensitivity reactions. Theranostics 2021; 11:470-490. [PMID: 33391487 PMCID: PMC7738859 DOI: 10.7150/thno.51462] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Accepted: 09/25/2020] [Indexed: 12/20/2022] Open
Abstract
Rationale: Reactive oxygen species (ROS) and reactive nitrogen species (RNS) are important regulators of inflammation. The exact impact of ROS/RNS on cutaneous delayed-type hypersensitivity reaction (DTHR) is controversial. The aim of our study was to identify the dominant sources of ROS/RNS during acute and chronic trinitrochlorobenzene (TNCB)-induced cutaneous DTHR in mice with differently impaired ROS/RNS production. Methods: TNCB-sensitized wild-type, NADPH oxidase 2 (NOX2)- deficient (gp91phox-/-), myeloperoxidase-deficient (MPO-/-), and inducible nitric oxide synthase-deficient (iNOS-/-) mice were challenged with TNCB on the right ear once to elicit acute DTHR and repetitively up to five times to induce chronic DTHR. We measured ear swelling responses and noninvasively assessed ROS/RNS production in vivo by employing the chemiluminescence optical imaging (OI) probe L-012. Additionally, we conducted extensive ex vivo analyses of inflamed ears focusing on ROS/RNS production and the biochemical and morphological consequences. Results: The in vivo L-012 OI of acute and chronic DTHR revealed completely abrogated ROS/RNS production in the ears of gp91phox-/- mice, up to 90 % decreased ROS/RNS production in the ears of MPO-/- mice and unaffected ROS/RNS production in the ears of iNOS-/- mice. The DHR flow cytometry analysis of leukocytes derived from the ears with acute DTHR confirmed our in vivo L-012 OI results. Nevertheless, we observed no significant differences in the ear swelling responses among all the experimental groups. The histopathological analysis of the ears of gp91phox-/- mice with acute DTHRs revealed slightly enhanced inflammation. In contrast, we observed a moderately reduced inflammatory immune response in the ears of gp91phox-/- mice with chronic DTHR, while the inflamed ears of MPO-/- mice exhibited the strongest inflammation. Analyses of lipid peroxidation, 8-hydroxy-2'deoxyguanosine levels, redox related metabolites and genomic expression of antioxidant proteins revealed similar oxidative stress in all experimental groups. Furthermore, inflamed ears of wild-type and gp91phox-/- mice displayed neutrophil extracellular trap (NET) formation exclusively in acute but not chronic DTHR. Conclusions: MPO and NOX2 are the dominant sources of ROS/RNS in acute and chronic DTHR. Nevertheless, depletion of one primary source of ROS/RNS exhibited only marginal but conflicting impact on acute and chronic cutaneous DTHR. Thus, ROS/RNS are not a single entity, and each species has different properties at certain stages of the disease, resulting in different outcomes.
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48
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Wahi D, Soni D, Grover A. A Double-Edged Sword: The Anti-Cancer Effects of Emodin by Inhibiting the Redox-Protective Protein MTH1 and Augmenting ROS in NSCLC. J Cancer 2021; 12:652-681. [PMID: 33403025 PMCID: PMC7778552 DOI: 10.7150/jca.41160] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Accepted: 04/01/2020] [Indexed: 12/23/2022] Open
Abstract
Background: Reactive oxygen species (ROS), playing a two-fold role in tumorigenesis, are responsible for tumor formation and progression through the induction of genome instability and pro-oncogenic signaling. The same ROS is toxic to cancer cells at higher levels, oxidizing free nucleotide precursors (dNTPs) as well as damaging DNA leading to cell senescence. Research has highlighted the tumor cell-specific expression of a redox-protective phosphatase, MutT homolog 1 (MTH1), that performs the enzymatic conversion of oxidized nucleotides (like 8-oxo-dGTP) to their corresponding monophosphates, up-regulated in numerous cancers, circumventing their misincorporation into the genomic DNA and preventing damage and cell death. Methods: To identify novel natural small molecular inhibitors of MTH1 to be used as cancer therapeutic agents, molecular screening for MTH1 active site binders was performed from natural small molecular libraries. Emodin was identified as a lead compound for MTH1 active site functional inhibition and its action on MTH1 inhibition was validated on non-small cell lung cancer cellular models (NSCLC). Results: Our study provides strong evidence that emodin mediated MTH1 inhibition impaired NSCLC cell growth, inducing senescence. Emodin treatment enhanced the cellular ROS burdens, on one hand, damaged dNTP pools and inhibited MTH1 function on the other. Our work on emodin indicates that ROS is the key driver of cancer cell-specific increased DNA damage and apoptosis upon MTH1 inhibition. Consequently, we observed a time-dependent increase in NSCL cancer cell susceptibility to oxidative stress with emodin treatment. Conclusions: Based on our data, the anti-cancer effects of emodin as an MTH1 inhibitor have clinical potential as a single agent capable of functioning as a ROS inducer and simultaneous blocker of dNTP pool sanitation in the treatment of NSCL cancers. Collectively, our results have identified for the first time that the potential molecular mechanism of emodin function, increasing DNA damage and apoptosis in cancer cells, is via MTH1 inhibition.
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Affiliation(s)
- Divya Wahi
- School of Biotechnology, Jawaharlal Nehru University, New Delhi, India - 110067
| | - Deepika Soni
- School of Biotechnology, Jawaharlal Nehru University, New Delhi, India - 110067
| | - Abhinav Grover
- School of Biotechnology, Jawaharlal Nehru University, New Delhi, India - 110067
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49
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Visnes T, Benítez-Buelga C, Cázares-Körner A, Sanjiv K, Hanna BMF, Mortusewicz O, Rajagopal V, Albers JJ, Hagey DW, Bekkhus T, Eshtad S, Baquero JM, Masuyer G, Wallner O, Müller S, Pham T, Göktürk C, Rasti A, Suman S, Torres-Ruiz R, Sarno A, Wiita E, Homan EJ, Karsten S, Marimuthu K, Michel M, Koolmeister T, Scobie M, Loseva O, Almlöf I, Unterlass JE, Pettke A, Boström J, Pandey M, Gad H, Herr P, Jemth AS, El Andaloussi S, Kalderén C, Rodriguez-Perales S, Benítez J, Krokan HE, Altun M, Stenmark P, Berglund UW, Helleday T. Targeting OGG1 arrests cancer cell proliferation by inducing replication stress. Nucleic Acids Res 2020; 48:12234-12251. [PMID: 33211885 PMCID: PMC7708037 DOI: 10.1093/nar/gkaa1048] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 10/15/2020] [Accepted: 10/28/2020] [Indexed: 12/17/2022] Open
Abstract
Altered oncogene expression in cancer cells causes loss of redox homeostasis resulting in oxidative DNA damage, e.g. 8-oxoguanine (8-oxoG), repaired by base excision repair (BER). PARP1 coordinates BER and relies on the upstream 8-oxoguanine-DNA glycosylase (OGG1) to recognise and excise 8-oxoG. Here we hypothesize that OGG1 may represent an attractive target to exploit reactive oxygen species (ROS) elevation in cancer. Although OGG1 depletion is well tolerated in non-transformed cells, we report here that OGG1 depletion obstructs A3 T-cell lymphoblastic acute leukemia growth in vitro and in vivo, validating OGG1 as a potential anti-cancer target. In line with this hypothesis, we show that OGG1 inhibitors (OGG1i) target a wide range of cancer cells, with a favourable therapeutic index compared to non-transformed cells. Mechanistically, OGG1i and shRNA depletion cause S-phase DNA damage, replication stress and proliferation arrest or cell death, representing a novel mechanistic approach to target cancer. This study adds OGG1 to the list of BER factors, e.g. PARP1, as potential targets for cancer treatment.
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Affiliation(s)
- Torkild Visnes
- Science for Life Laboratory, Department of Oncology and Pathology, Karolinska Institutet, S-171 76 Stockholm, Sweden.,Department of Biotechnology and Nanomedicine, SINTEF Industry, N-7465 Trondheim,Norway
| | - Carlos Benítez-Buelga
- Science for Life Laboratory, Department of Oncology and Pathology, Karolinska Institutet, S-171 76 Stockholm, Sweden
| | - Armando Cázares-Körner
- Science for Life Laboratory, Department of Oncology and Pathology, Karolinska Institutet, S-171 76 Stockholm, Sweden
| | - Kumar Sanjiv
- Science for Life Laboratory, Department of Oncology and Pathology, Karolinska Institutet, S-171 76 Stockholm, Sweden
| | - Bishoy M F Hanna
- Science for Life Laboratory, Department of Oncology and Pathology, Karolinska Institutet, S-171 76 Stockholm, Sweden
| | - Oliver Mortusewicz
- Science for Life Laboratory, Department of Oncology and Pathology, Karolinska Institutet, S-171 76 Stockholm, Sweden
| | - Varshni Rajagopal
- Science for Life Laboratory, Department of Oncology and Pathology, Karolinska Institutet, S-171 76 Stockholm, Sweden
| | - Julian J Albers
- Science for Life Laboratory, Department of Oncology and Pathology, Karolinska Institutet, S-171 76 Stockholm, Sweden
| | - Daniel W Hagey
- Department of Laboratory Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Tove Bekkhus
- Science for Life Laboratory, Department of Oncology and Pathology, Karolinska Institutet, S-171 76 Stockholm, Sweden
| | - Saeed Eshtad
- Science for Life Laboratory, Department of Oncology and Pathology, Karolinska Institutet, S-171 76 Stockholm, Sweden
| | - Juan Miguel Baquero
- Human Genetics Group, Spanish National Cancer Research Centre (CNIO), Madrid, Spain
| | - Geoffrey Masuyer
- Department of Biochemistry and Biophysics, Stockholm University, SE-106 91 Stockholm, Sweden.,Department of Pharmacy and Pharmacology, Centre for Therapeutic Innovation. University of Bath, Bath BA2 7AY, UK
| | - Olov Wallner
- Science for Life Laboratory, Department of Oncology and Pathology, Karolinska Institutet, S-171 76 Stockholm, Sweden
| | - Sarah Müller
- Science for Life Laboratory, Department of Oncology and Pathology, Karolinska Institutet, S-171 76 Stockholm, Sweden
| | - Therese Pham
- Science for Life Laboratory, Department of Oncology and Pathology, Karolinska Institutet, S-171 76 Stockholm, Sweden
| | - Camilla Göktürk
- Science for Life Laboratory, Department of Oncology and Pathology, Karolinska Institutet, S-171 76 Stockholm, Sweden
| | - Azita Rasti
- Science for Life Laboratory, Department of Oncology and Pathology, Karolinska Institutet, S-171 76 Stockholm, Sweden
| | - Sharda Suman
- Science for Life Laboratory, Department of Oncology and Pathology, Karolinska Institutet, S-171 76 Stockholm, Sweden
| | - Raúl Torres-Ruiz
- Molecular Cytogenetics Group, Human Cancer Genetics Program, Spanish National Cancer Research Centre (CNIO), Madrid, 28029, Spain.,Josep Carreras Leukemia Research Institute and Department of Biomedicine, School of Medicine, University of Barcelona, Barcelona 08036, Spain
| | - Antonio Sarno
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway.,The Liaison Committee for Education, Research and Innovation in Central Norway, Trondheim, Norway.,Department of Environment and New Resources, SINTEF Ocean, N-7010 Trondheim, Norway
| | - Elisée Wiita
- Science for Life Laboratory, Department of Oncology and Pathology, Karolinska Institutet, S-171 76 Stockholm, Sweden
| | - Evert J Homan
- Science for Life Laboratory, Department of Oncology and Pathology, Karolinska Institutet, S-171 76 Stockholm, Sweden
| | - Stella Karsten
- Science for Life Laboratory, Department of Oncology and Pathology, Karolinska Institutet, S-171 76 Stockholm, Sweden
| | - Karthick Marimuthu
- Science for Life Laboratory, Department of Oncology and Pathology, Karolinska Institutet, S-171 76 Stockholm, Sweden
| | - Maurice Michel
- Science for Life Laboratory, Department of Oncology and Pathology, Karolinska Institutet, S-171 76 Stockholm, Sweden
| | - Tobias Koolmeister
- Science for Life Laboratory, Department of Oncology and Pathology, Karolinska Institutet, S-171 76 Stockholm, Sweden
| | - Martin Scobie
- Science for Life Laboratory, Department of Oncology and Pathology, Karolinska Institutet, S-171 76 Stockholm, Sweden
| | - Olga Loseva
- Science for Life Laboratory, Department of Oncology and Pathology, Karolinska Institutet, S-171 76 Stockholm, Sweden
| | - Ingrid Almlöf
- Science for Life Laboratory, Department of Oncology and Pathology, Karolinska Institutet, S-171 76 Stockholm, Sweden
| | - Judith Edda Unterlass
- Science for Life Laboratory, Department of Oncology and Pathology, Karolinska Institutet, S-171 76 Stockholm, Sweden
| | - Aleksandra Pettke
- Science for Life Laboratory, Department of Oncology and Pathology, Karolinska Institutet, S-171 76 Stockholm, Sweden
| | - Johan Boström
- Science for Life Laboratory, Department of Oncology and Pathology, Karolinska Institutet, S-171 76 Stockholm, Sweden.,Science for Life Laboratory, Division of Clinical Physiology, Department of Laboratory Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Monica Pandey
- Weston Park Cancer Centre, Department of Oncology and Metabolism, University of Sheffield, Sheffield S10 2RX, UK
| | - Helge Gad
- Weston Park Cancer Centre, Department of Oncology and Metabolism, University of Sheffield, Sheffield S10 2RX, UK
| | - Patrick Herr
- Weston Park Cancer Centre, Department of Oncology and Metabolism, University of Sheffield, Sheffield S10 2RX, UK
| | - Ann-Sofie Jemth
- Science for Life Laboratory, Department of Oncology and Pathology, Karolinska Institutet, S-171 76 Stockholm, Sweden
| | | | - Christina Kalderén
- Science for Life Laboratory, Department of Oncology and Pathology, Karolinska Institutet, S-171 76 Stockholm, Sweden
| | - Sandra Rodriguez-Perales
- Molecular Cytogenetics Group, Human Cancer Genetics Program, Spanish National Cancer Research Centre (CNIO), Madrid, 28029, Spain
| | - Javier Benítez
- Human Genetics Group, Spanish National Cancer Research Centre (CNIO), Madrid, Spain.,Spanish Network on Rare Diseases (CIBERER), Madrid, Spain
| | - Hans E Krokan
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway.,The Liaison Committee for Education, Research and Innovation in Central Norway, Trondheim, Norway
| | - Mikael Altun
- Science for Life Laboratory, Department of Oncology and Pathology, Karolinska Institutet, S-171 76 Stockholm, Sweden.,Science for Life Laboratory, Division of Clinical Physiology, Department of Laboratory Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Pål Stenmark
- Department of Biochemistry and Biophysics, Stockholm University, SE-106 91 Stockholm, Sweden.,Department of Experimental Medical Science, Lund University, SE-221 00 Lund, Sweden
| | - Ulrika Warpman Berglund
- Science for Life Laboratory, Department of Oncology and Pathology, Karolinska Institutet, S-171 76 Stockholm, Sweden
| | - Thomas Helleday
- Science for Life Laboratory, Department of Oncology and Pathology, Karolinska Institutet, S-171 76 Stockholm, Sweden.,Weston Park Cancer Centre, Department of Oncology and Metabolism, University of Sheffield, Sheffield S10 2RX, UK
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50
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Kumar N, Raja S, Van Houten B. The involvement of nucleotide excision repair proteins in the removal of oxidative DNA damage. Nucleic Acids Res 2020; 48:11227-11243. [PMID: 33010169 PMCID: PMC7672477 DOI: 10.1093/nar/gkaa777] [Citation(s) in RCA: 63] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2020] [Revised: 09/02/2020] [Accepted: 09/07/2020] [Indexed: 12/28/2022] Open
Abstract
The six major mammalian DNA repair pathways were discovered as independent processes, each dedicated to remove specific types of lesions, but the past two decades have brought into focus the significant interplay between these pathways. In particular, several studies have demonstrated that certain proteins of the nucleotide excision repair (NER) and base excision repair (BER) pathways work in a cooperative manner in the removal of oxidative lesions. This review focuses on recent data showing how the NER proteins, XPA, XPC, XPG, CSA, CSB and UV-DDB, work to stimulate known glycosylases involved in the removal of certain forms of base damage resulting from oxidative processes, and also discusses how some oxidative lesions are probably directly repaired through NER. Finally, since many glycosylases are inhibited from working on damage in the context of chromatin, we detail how we believe UV-DDB may be the first responder in altering the structure of damage containing-nucleosomes, allowing access to BER enzymes.
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Affiliation(s)
- Namrata Kumar
- Molecular Genetics and Developmental Biology Graduate Program, School of Medicine, University of Pittsburgh, Pittsburgh, PA 15213 USA.,UPMC Hillman Cancer Center, University of Pittsburgh, PA 15213, USA
| | - Sripriya Raja
- UPMC Hillman Cancer Center, University of Pittsburgh, PA 15213, USA.,Molecular Pharmacology Graduate Program, School of Medicine, University of Pittsburgh, Pittsburgh, PA 15213 USA
| | - Bennett Van Houten
- Molecular Genetics and Developmental Biology Graduate Program, School of Medicine, University of Pittsburgh, Pittsburgh, PA 15213 USA.,UPMC Hillman Cancer Center, University of Pittsburgh, PA 15213, USA.,Molecular Pharmacology Graduate Program, School of Medicine, University of Pittsburgh, Pittsburgh, PA 15213 USA.,Department of Pharmacology and Chemical Biology, School of Medicine, University of Pittsburgh, Pittsburgh, PA 15213, USA
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