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Taiyab A, Ashraf A, Sulaimani MN, Rathi A, Shamsi A, Hassan MI. Role of MTH1 in oxidative stress and therapeutic targeting of cancer. Redox Biol 2024; 77:103394. [PMID: 39418911 PMCID: PMC11532495 DOI: 10.1016/j.redox.2024.103394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2024] [Revised: 10/08/2024] [Accepted: 10/10/2024] [Indexed: 10/19/2024] Open
Abstract
Cancer cells maintain high levels of reactive oxygen species (ROS) to drive their growth, but ROS can trigger cell death through oxidative stress and DNA damage. To survive enhanced ROS levels, cancer cells activate their antioxidant defenses. One such defense is MTH1, an enzyme that prevents the incorporation of oxidized nucleotides into DNA, thus preventing DNA damage and allowing cancer to proliferate. MTH1 levels are often elevated in many cancers, and thus, inhibiting MTH1 is an attractive strategy for suppressing tumor growth and metastasis. Targeted MTH1 inhibition can induce DNA damage in cancer cells, exploiting their vulnerability to oxidative stress and selectively targeting them for destruction. Targeting MTH1 is promising for cancer treatment because normal cells have lower ROS levels and are less dependent on these pathways, making the approach both effective and specific to cancer. This review aims to investigate the potential of MTH1 as a therapeutic target, especially in cancer treatment, offering detailed insights into its structure, function, and role in disease progression. We also discussed various MTH1 inhibitors that have been developed to selectively induce oxidative damage in cancer cells, though their effectiveness varies. In addition, this review provide deeper mechanistic insights into the role of MTH1 in cancer prevention and oxidative stress management in various diseases.
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Affiliation(s)
- Aaliya Taiyab
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi, 110025, India
| | - Anam Ashraf
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi, 110025, India
| | - Md Nayab Sulaimani
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi, 110025, India
| | - Aanchal Rathi
- Department of Biotechnology, Faculty of Life Sciences, Jamia Millia Islamia, New Delhi, 110025, India
| | - Anas Shamsi
- Centre of Medical and Bio-Allied Health Sciences Research, Ajman University, Ajman, P.O. Box 346, United Arab Emirates.
| | - Md Imtaiyaz Hassan
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi, 110025, India.
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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] [Grants] [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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Taiyab A, Choudhury A, Haidar S, Yousuf M, Rathi A, Koul P, Chakrabarty A, Islam A, Shamsi A, Hassan MI. Exploring MTH1 inhibitory potential of Thymoquinone and Baicalin for therapeutic targeting of breast cancer. Biomed Pharmacother 2024; 173:116332. [PMID: 38430630 DOI: 10.1016/j.biopha.2024.116332] [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: 12/18/2023] [Revised: 02/20/2024] [Accepted: 02/22/2024] [Indexed: 03/05/2024] Open
Abstract
Cancers frequently have increased ROS levels due to disrupted redox balance, leading to oxidative DNA and protein damage, mutations, and apoptosis. The MTH1 protein plays a crucial role by sanitizing the oxidized dNTP pools. Hence, cancer cells rely on MTH1 to prevent the integration of oxidized dNTPs into DNA, preventing DNA damage and allowing cancer cell proliferation. We have discovered Thymoquinone (TQ) and Baicalin (BC) as inhibitors of MTH1 using combined docking and MD simulation approaches complemented by experimental validations via assessing binding affinity and enzyme inhibition. Docking and MD simulations studies revealed an efficient binding of TQ and BC to the active site pocket of the MTH1, and the resultant complexes are appreciably stable. Fluorescence measurements estimated a strong binding affinity of TQ and BC with Ka 3.4 ×106 and 1.0 ×105, respectively. Treating breast cancer cells with TQ and BC significantly inhibited the growth and proliferation (IC50 values 28.3 µM and 34.8 µM) and induced apoptosis. TQ and BC increased the ROS production in MCF7 cells, imposing substantial oxidative stress on cancer cells and leading to cell death. Finally, TQ and BC are proven strong MTH1 inhibitors, offering promising prospects for anti-cancer therapy.
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Affiliation(s)
- Aaliya Taiyab
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi 110025, India
| | - Arunabh Choudhury
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi 110025, India
| | - Shaista Haidar
- Department of Life Sciences, School of Natural Sciences, Shiv Nadar Institution of Eminence Deemed to be University, NH91, Tehsil Dadri, Gautam Buddha Nagar, Uttar Pradesh 201314, India
| | - Mohd Yousuf
- Department of Biotechnology, Faculty of Natural Sciences, Jamia Millia Islamia, New Delhi 110025, India
| | - Aanchal Rathi
- Department of Bioscience, Faculty of Natural Sciences, Jamia Millia Islamia, New Delhi 110025, India
| | - Priyanka Koul
- Department of Biotechnology, Faculty of Natural Sciences, Jamia Millia Islamia, New Delhi 110025, India
| | - Anindita Chakrabarty
- Department of Life Sciences, School of Natural Sciences, Shiv Nadar Institution of Eminence Deemed to be University, NH91, Tehsil Dadri, Gautam Buddha Nagar, Uttar Pradesh 201314, India
| | - Asimul Islam
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi 110025, India
| | - Anas Shamsi
- Centre of Medical and Bio-Allied Health Sciences Research, Ajman University, Ajman 364, United Arab Emirates.
| | - Md Imtaiyaz Hassan
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi 110025, India.
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Lu XX, Xue C, Dong JH, Zhang YZ, Gao F. Nanoplatform-based strategies for enhancing the lethality of current antitumor PDT. J Mater Chem B 2024; 12:3209-3225. [PMID: 38497405 DOI: 10.1039/d4tb00008k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/19/2024]
Abstract
Photodynamic therapy (PDT) exhibits great application prospects in future clinical oncology due to its spatiotemporal controllability and good biosafety. However, the antitumor efficacy of PDT is seriously hindered by many factors, including tumor hypoxia, limited light penetration ability, and strong defense mechanisms of tumors. Considering that it is difficult to completely solve the first two problems, enhancing the lethality of antitumor PDT has become a good idea to extend its clinical application. Herein, we summarize the nanoplatform-involved strategies to effectively amplify the tumoricidal capability of current PDT and then discuss the present bottlenecks and prospects of the nanoplatform-based PDT sensitization strategies in tumor therapy. We hope this review will provide some references for others to design high-performance PDT nanoplatforms for tumor therapy.
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Affiliation(s)
- Xin-Xin Lu
- Institute of Advanced Materials and Flexible Electronics (IAMFE), School of Chemistry and Materials Science, Nanjing University of Information Science & Technology, Nanjing, 210044, China.
| | - Chun Xue
- Institute of Advanced Materials and Flexible Electronics (IAMFE), School of Chemistry and Materials Science, Nanjing University of Information Science & Technology, Nanjing, 210044, China.
| | - Jian-Hui Dong
- Institute of Advanced Materials and Flexible Electronics (IAMFE), School of Chemistry and Materials Science, Nanjing University of Information Science & Technology, Nanjing, 210044, China.
| | - Yi-Zhou Zhang
- Institute of Advanced Materials and Flexible Electronics (IAMFE), School of Chemistry and Materials Science, Nanjing University of Information Science & Technology, Nanjing, 210044, China.
| | - Fan Gao
- Institute of Advanced Materials and Flexible Electronics (IAMFE), School of Chemistry and Materials Science, Nanjing University of Information Science & Technology, Nanjing, 210044, China.
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Yang ZY, Li LG, Xiong YL, Chen NN, Yu TT, Li HT, Ren T, You H, Wang X, Li TF, Wang MF, Hu J. Cepharanthine synergizes with photodynamic therapy for boosting ROS-driven DNA damage and suppressing MTH1 as a potential anti-cancer strategy. Photodiagnosis Photodyn Ther 2024; 45:103917. [PMID: 38042236 DOI: 10.1016/j.pdpdt.2023.103917] [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: 09/08/2023] [Revised: 11/11/2023] [Accepted: 11/29/2023] [Indexed: 12/04/2023]
Abstract
OBJECTIVE Photodynamic therapy (PDT) primarily treats skin diseases or cancer by generating reactive oxygen species (ROS) to damage cellular DNA, yet drug resistance limits its application. To tackle this problem, the present study was carried out to improve the efficacy of chlorin e6 (Ce6)-PDT using Cepharanthine (CEP) as well as to reveal the potential molecular mechanism. MATERIALS AND METHODS Lewis lung cancer cell line (LLC) was utilized as the cancer cell model. chlorin e6 (Ce6) acted as the photosensitizer to induce PDT. The in vitro anti-cancer efficacy was measured by CCK-8, Annexin-V/PI staining, and migration assay. The Ce6 uptake was observed using flow cytometry and confocal microscopy. The ROS generation was detected by the DCFH-DA probe. The analysis of MutT Homolog 1 (MTH1) expression, correlation, and prognosis in databases was conducted by bioinformatic. The MTH1 expression was detected through western blots (WB). DNA damage was assayed by WB, immunofluorescent staining, and comet assay. RESULTS Ce6-PDT showed robust resistance in lung cancer cells under certain conditions, as evidenced by the unchanged cell viability and apoptosis. The subsequent findings confirmed that the uptake of Ce6 and MTH1 expression was enhanced, but ROS generation with laser irradiation was not increased in LLC, which indicated that the ROS scavenge may be the critical reason for resistance. Surprisingly, bioinformatic and in vitro experiments identified that MTH1, which could prevent the DNA from damage of ROS, was highly expressed in lung cancer and thereby led to the poor prognosis and could be further up-regulated by Ce6 PDT. CEP exhibited a dose-dependent suppressive effect on the lung cancer cells. Further investigations presented that CEP treatment boosted ROS production, thereby resulting in DNA double-strand breakage (DDSB) with activation of MTH1, indicating that CEP facilitated Ce6-PDT-mediated DNA damage. Finally, the combination of CEP and Ce6-PDT exhibited prominent ROS accumulation, MTH1 inhibition, and anti-lung cancer efficacy, which had synergistic pro-DNA damage properties. CONCLUSION Collectively, highly expressed MTH1 and the failure of ROS generation lead to PDT resistance in lung cancer cells. CEP facilitates ROS generation of PDT, thereby promoting vigorous DNA damage, inactivating MTH1, alleviating PDT resistance, and ameliorating the anti-cancer efficacy of Ce6-PDT, provides a novel approach for augmented PDT.
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Affiliation(s)
- Zi-Yi Yang
- Hubei Key Laboratory of Embryonic Stem Cell Research, School of Basic Medical Sciences, Hubei University of Medicine, Renmin road No. 30, Shiyan, Hubei 442000, China; Department of Respiratory, Taihe Hospital of Shiyan, Hubei University of Medicine, Renmin road No. 30, Shiyan, Hubei 442000, China; Shiyan Key Laboratory of Natural Medicine Nanoformulation Research, Hubei University of Medicine, Renmin road No. 30, Shiyan, Hubei, 442000, China
| | - Liu-Gen Li
- Hubei Key Laboratory of Embryonic Stem Cell Research, School of Basic Medical Sciences, Hubei University of Medicine, Renmin road No. 30, Shiyan, Hubei 442000, China; Department of Respiratory, Taihe Hospital of Shiyan, Hubei University of Medicine, Renmin road No. 30, Shiyan, Hubei 442000, China; Shiyan Key Laboratory of Natural Medicine Nanoformulation Research, Hubei University of Medicine, Renmin road No. 30, Shiyan, Hubei, 442000, China
| | - Yi-Lian Xiong
- Hubei Key Laboratory of Embryonic Stem Cell Research, School of Basic Medical Sciences, Hubei University of Medicine, Renmin road No. 30, Shiyan, Hubei 442000, China; Department of Respiratory, Taihe Hospital of Shiyan, Hubei University of Medicine, Renmin road No. 30, Shiyan, Hubei 442000, China
| | - Nan-Nan Chen
- Hubei Key Laboratory of Embryonic Stem Cell Research, School of Basic Medical Sciences, Hubei University of Medicine, Renmin road No. 30, Shiyan, Hubei 442000, China
| | - Ting-Ting Yu
- Hubei Key Laboratory of Embryonic Stem Cell Research, School of Basic Medical Sciences, Hubei University of Medicine, Renmin road No. 30, Shiyan, Hubei 442000, China; Department of Pathology, Renmin Hospital of Shiyan, Hubei University of Medicine, Shiyan, Hubei 442000, China
| | - Hai-Tao Li
- Department of Respiratory, Taihe Hospital of Shiyan, Hubei University of Medicine, Renmin road No. 30, Shiyan, Hubei 442000, China
| | - Tao Ren
- Department of Respiratory, Taihe Hospital of Shiyan, Hubei University of Medicine, Renmin road No. 30, Shiyan, Hubei 442000, China
| | - Hui You
- Department of Respiratory, Taihe Hospital of Shiyan, Hubei University of Medicine, Renmin road No. 30, Shiyan, Hubei 442000, China
| | - Xiao Wang
- Department of Respiratory, Taihe Hospital of Shiyan, Hubei University of Medicine, Renmin road No. 30, Shiyan, Hubei 442000, China
| | - Tong-Fei Li
- Hubei Key Laboratory of Embryonic Stem Cell Research, School of Basic Medical Sciences, Hubei University of Medicine, Renmin road No. 30, Shiyan, Hubei 442000, China; Shiyan Key Laboratory of Natural Medicine Nanoformulation Research, Hubei University of Medicine, Renmin road No. 30, Shiyan, Hubei, 442000, China.
| | - Mei-Fang Wang
- Department of Respiratory, Taihe Hospital of Shiyan, Hubei University of Medicine, Renmin road No. 30, Shiyan, Hubei 442000, China.
| | - Jun Hu
- Hubei Key Laboratory of Embryonic Stem Cell Research, School of Basic Medical Sciences, Hubei University of Medicine, Renmin road No. 30, Shiyan, Hubei 442000, China; Shiyan Key Laboratory of Natural Medicine Nanoformulation Research, Hubei University of Medicine, Renmin road No. 30, Shiyan, Hubei, 442000, China.
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6
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Huth T, Dreher EC, Lemke S, Fritzsche S, Sugiyanto RN, Castven D, Ibberson D, Sticht C, Eiteneuer E, Jauch A, Pusch S, Albrecht T, Goeppert B, Candia J, Wang XW, Ji J, Marquardt JU, Nahnsen S, Schirmacher P, Roessler S. Chromosome 8p engineering reveals increased metastatic potential targetable by patient-specific synthetic lethality in liver cancer. SCIENCE ADVANCES 2023; 9:eadh1442. [PMID: 38134284 PMCID: PMC10745716 DOI: 10.1126/sciadv.adh1442] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Accepted: 11/22/2023] [Indexed: 12/24/2023]
Abstract
Large-scale chromosomal aberrations are prevalent in human cancer, but their function remains poorly understood. We established chromosome-engineered hepatocellular carcinoma cell lines using CRISPR-Cas9 genome editing. A 33-mega-base pair region on chromosome 8p (chr8p) was heterozygously deleted, mimicking a frequently observed chromosomal deletion. Using this isogenic model system, we delineated the functional consequences of chr8p loss and its impact on metastatic behavior and patient survival. We found that metastasis-associated genes on chr8p act in concert to induce an aggressive and invasive phenotype characteristic for chr8p-deleted tumors. Genome-wide CRISPR-Cas9 viability screening in isogenic chr8p-deleted cells served as a powerful tool to find previously unidentified synthetic lethal targets and vulnerabilities accompanying patient-specific chromosomal alterations. Using this target identification strategy, we showed that chr8p deletion sensitizes tumor cells to targeting of the reactive oxygen sanitizing enzyme Nudix hydrolase 17. Thus, chromosomal engineering allowed for the identification of novel synthetic lethalities specific to chr8p loss of heterozygosity.
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Affiliation(s)
- Thorben Huth
- Heidelberg University, Medical Faculty, Institute of Pathology, University Hospital Heidelberg, 69120 Heidelberg, Germany
| | - Emely C. Dreher
- Heidelberg University, Medical Faculty, Institute of Pathology, University Hospital Heidelberg, 69120 Heidelberg, Germany
| | - Steffen Lemke
- Quantitative Biology Center (QBiC), University of Tübingen, 72076 Tübingen, Germany
- Department of Peptide-based Immunotherapy, University and University Hospital Tübingen, 72076 Tübingen, Germany
- Institute for Cell Biology, Department of Immunology, University of Tübingen, 72076 Tübingen, Germany
- Cluster of Excellence iFIT (EXC2180) “Image-Guided and Functionally Instructed Tumor Therapies”, University of Tübingen, 72076 Tübingen, Germany
| | - Sarah Fritzsche
- Heidelberg University, Medical Faculty, Institute of Pathology, University Hospital Heidelberg, 69120 Heidelberg, Germany
| | - Raisatun N. Sugiyanto
- Heidelberg University, Medical Faculty, Institute of Pathology, University Hospital Heidelberg, 69120 Heidelberg, Germany
| | - Darko Castven
- Department of Medicine I, University Medical Center Schleswig Holstein, 23538 Lübeck, Germany
| | - David Ibberson
- Deep Sequencing Core Facility, CellNetworks Excellence Cluster, Heidelberg University, 69120 Heidelberg, Germany
| | - Carsten Sticht
- NGS Core Facility, Medical Faculty Mannheim, Heidelberg University, 68167 Mannheim, Germany
| | - Eva Eiteneuer
- Heidelberg University, Medical Faculty, Institute of Pathology, University Hospital Heidelberg, 69120 Heidelberg, Germany
| | - Anna Jauch
- Institute of Human Genetics, Heidelberg University, 69120 Heidelberg, Germany
| | - Stefan Pusch
- Department of Neuropathology, Institute of Pathology, University Hospital Heidelberg, 69120 Heidelberg, Germany
- Clinical Cooperation Unit Neuropathology, German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
| | - Thomas Albrecht
- Heidelberg University, Medical Faculty, Institute of Pathology, University Hospital Heidelberg, 69120 Heidelberg, Germany
| | - Benjamin Goeppert
- Heidelberg University, Medical Faculty, Institute of Pathology, University Hospital Heidelberg, 69120 Heidelberg, Germany
- Institute of Tissue Medicine and Pathology, University of Bern, 3008 Bern, Switzerland
- Institute of Pathology and Neuropathology, RKH Klinikum Ludwigsburg, 71640 Ludwigsburg, Germany
| | - Julián Candia
- Longitudinal Studies Section, Translational Gerontology Branch, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, USA
| | - Xin Wei Wang
- Laboratory of Human Carcinogenesis and Liver Cancer Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Junfang Ji
- The MOE Key Laboratory of Biosystems Homeostasis & Protection, Zhejiang Provincial Key Laboratory for Cancer Molecular Cell Biology, and Innovation Center for Cell Signaling Network, Life Sciences Institute, Zhejiang University, Hangzhou 310058, China
| | - Jens U. Marquardt
- Department of Medicine I, University Medical Center Schleswig Holstein, 23538 Lübeck, Germany
| | - Sven Nahnsen
- Quantitative Biology Center (QBiC), University of Tübingen, 72076 Tübingen, Germany
- Cluster of Excellence iFIT (EXC2180) “Image-Guided and Functionally Instructed Tumor Therapies”, University of Tübingen, 72076 Tübingen, Germany
- Biomedical Data Science, Department of Computer Science, University of Tübingen, 72076 Tübingen, Germany
- The M3 Research Center, University of Tübingen, 72076 Tübingen, Germany
| | - Peter Schirmacher
- Heidelberg University, Medical Faculty, Institute of Pathology, University Hospital Heidelberg, 69120 Heidelberg, Germany
| | - Stephanie Roessler
- Heidelberg University, Medical Faculty, Institute of Pathology, University Hospital Heidelberg, 69120 Heidelberg, Germany
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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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8
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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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9
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Cooke MS, Chang YJ, Chen YR, Hu CW, Chao MR. Nucleic acid adductomics - The next generation of adductomics towards assessing environmental health risks. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 856:159192. [PMID: 36195140 DOI: 10.1016/j.scitotenv.2022.159192] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2022] [Revised: 09/07/2022] [Accepted: 09/29/2022] [Indexed: 06/16/2023]
Abstract
This Discussion article aims to explore the potential for a new generation of assay to emerge from cellular and urinary DNA adductomics which brings together DNA-RNA- and, to some extent, protein adductomics, to better understand the role of the exposome in environmental health. Components of the exposome have been linked to an increased risk of various, major diseases, and to identify the precise nature, and size, of risk, in this complex mixture of exposures, powerful tools are needed. Modification of nucleic acids (NA) is a key consequence of environmental exposures, and a goal of cellular DNA adductomics is to evaluate the totality of DNA modifications in the genome, on the basis that this will be most informative. Consequently, an approach which encompasses modifications of all nucleic acids (NA) would be potentially yet more informative. This article focuses on NA adductomics, which brings together the assessment of both DNA and RNA modifications, including modified (2'-deoxy)ribonucleosides (2'-dN/rN), modified nucleobases (nB), plus: DNA-DNA, RNA-RNA, DNA-RNA, DNA-protein, and RNA-protein crosslinks (DDCL, RRCL, DRCL, DPCL, and RPCL, respectively). We discuss the need for NA adductomics, plus the pros and cons of cellular vs. urinary NA adductomics, and present some evidence for the feasibility of this approach. We propose that NA adductomics provides a more comprehensive approach to the study of nucleic acid modifications, which will facilitate a range of advances, including the identification of novel, unexpected modifications e.g., RNA-RNA, and DNA-RNA crosslinks; key modifications associated with mutagenesis; agent-specific mechanisms; and adductome signatures of key environmental agents, leading to the dissection of the exposome, and its role in human health/disease, across the life course.
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Affiliation(s)
- Marcus S Cooke
- Oxidative Stress Group, Department of Cell Biology, Microbiology, and Molecular Biology, University of South Florida, Tampa, FL 33620, USA.
| | - Yuan-Jhe Chang
- Department of Occupational Safety and Health, Chung Shan Medical University, Taichung 402, Taiwan
| | - Yet-Ran Chen
- Agricultural Biotechnology Research Center, Academia Sinica, Taipei 115, Taiwan
| | - Chiung-Wen Hu
- Department of Public Health, Chung Shan Medical University, Taichung 402, Taiwan.
| | - 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.
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10
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Olsen MB, Huse C, de Sousa MML, Murphy SL, Sarno A, Obermann TS, Yang K, Holter JC, Jørgensen MJ, Christensen EE, Wang W, Ji P, Heggelund L, Hoel H, Dyrhol-Riise AM, Gregersen I, Aukrust P, Bjørås M, Halvorsen B, Dahl TB. DNA Repair Mechanisms are Activated in Circulating Lymphocytes of Hospitalized Covid-19 Patients. J Inflamm Res 2022; 15:6629-6644. [PMID: 36514358 PMCID: PMC9741826 DOI: 10.2147/jir.s379331] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Accepted: 10/20/2022] [Indexed: 12/12/2022] Open
Abstract
Purpose Reactive oxygen species (ROS) are an important part of the inflammatory response during infection but can also promote DNA damage. Due to the sustained inflammation in severe Covid-19, we hypothesized that hospitalized Covid-19 patients would be characterized by increased levels of oxidative DNA damage and dysregulation of the DNA repair machinery. Patients and Methods Levels of the oxidative DNA lesion 8-oxoG and levels of base excision repair (BER) proteins were measured in peripheral blood mononuclear cells (PBMC) from patients (8-oxoG, n = 22; BER, n = 17) and healthy controls (n = 10) (Cohort 1). Gene expression related to DNA repair was investigated in two independent cohorts of hospitalized Covid-19 patients (Cohort 1; 15 patents and 5 controls, Cohort 2; 15 patients and 6 controls), and by publicly available datasets. Results Patients and healthy controls showed comparable amounts of oxidative DNA damage as assessed by 8-oxoG while levels of several BER proteins were increased in Covid-19 patients, indicating enhanced DNA repair in acute Covid-19 disease. Furthermore, gene expression analysis demonstrated regulation of genes involved in BER and double strand break repair (DSBR) in PBMC of Covid-19 patients and expression level of several DSBR genes correlated with the degree of respiratory failure. Finally, by re-analyzing publicly available data, we found that the pathway Hallmark DNA repair was significantly more regulated in circulating immune cells during Covid-19 compared to influenza virus infection, bacterial pneumonia or acute respiratory infection due to seasonal coronavirus. Conclusion Although beneficial by protecting against DNA damage, long-term activation of the DNA repair machinery could also contribute to persistent inflammation, potentially through mechanisms such as the induction of cellular senescence. However, further studies that also include measurements of additional markers of DNA damage are required to determine the role and precise molecular mechanisms for DNA repair in SARS-CoV-2 infection.
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Affiliation(s)
- Maria Belland Olsen
- Research Institute of Internal Medicine, Oslo University Hospital, Oslo, Norway,Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Camilla Huse
- Research Institute of Internal Medicine, Oslo University Hospital, Oslo, Norway,Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Mirta Mittelstedt Leal de Sousa
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway,Proteomics and Modomics Experimental Core Facility (PROMEC), NTNU, Trondheim, Norway
| | - Sarah Louise Murphy
- Research Institute of Internal Medicine, Oslo University Hospital, Oslo, Norway,Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Antonio Sarno
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway,Department of Fisheries and New Biomarine Industry, SINTEF Ocean, Trondheim, Norway
| | - Tobias Sebastian Obermann
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Kuan Yang
- Research Institute of Internal Medicine, Oslo University Hospital, Oslo, Norway
| | - Jan Cato Holter
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway,Department of Microbiology, Oslo University Hospital and University of Oslo, Oslo, Norway
| | - Marte Jøntvedt Jørgensen
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway,Department of Infectious Diseases, Oslo University Hospital, Oslo, Norway
| | - Erik Egeland Christensen
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway,Department of Infectious Diseases, Oslo University Hospital, Oslo, Norway
| | - Wei Wang
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Ping Ji
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Lars Heggelund
- Department of Internal Medicine, Vestre Viken Hospital Trust, Drammen, Norway,Department of Clinical Science, Faculty of Medicine, University of Bergen, Bergen, Norway
| | - Hedda Hoel
- Research Institute of Internal Medicine, Oslo University Hospital, Oslo, Norway,Department of Medicine, Lovisenberg Diaconal Hospital, Oslo, Norway
| | - Anne Margarita Dyrhol-Riise
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway,Department of Infectious Diseases, Oslo University Hospital, Oslo, Norway
| | - Ida Gregersen
- Research Institute of Internal Medicine, Oslo University Hospital, Oslo, Norway
| | - Pål Aukrust
- Research Institute of Internal Medicine, Oslo University Hospital, Oslo, Norway,Institute of Clinical Medicine, University of Oslo, Oslo, Norway,Section of Clinical Immunology and Infectious Diseases, Oslo University Hospital, Oslo, Norway
| | - Magnar Bjørås
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway,Department of Microbiology, Oslo University Hospital and University of Oslo, Oslo, Norway
| | - Bente Halvorsen
- Research Institute of Internal Medicine, Oslo University Hospital, Oslo, Norway,Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Tuva Børresdatter Dahl
- Division of Critical Care and Emergencies, Oslo University Hospital, Oslo, Norway,Correspondence: Tuva Børresdatter Dahl, Division of Critical Care and Emergencies and Research Institute of Internal Medicine, Oslo University Hospital, Sognsvannsveien 20, Oslo, Norway, Tel +4723072786, Email
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11
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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: 12] [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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12
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Wang X, Song K, Fan Y, Du J, Liu J, Xu J, Zheng L, Ouyang R, Li Y, Miao Y, Zhang D. Ultrasound-triggered reactive oxygen species effector nanoamplifier for enhanced combination therapy of mutant p53 tumors. Colloids Surf B Biointerfaces 2022; 215:112489. [PMID: 35395477 DOI: 10.1016/j.colsurfb.2022.112489] [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: 02/11/2022] [Revised: 03/29/2022] [Accepted: 03/31/2022] [Indexed: 10/18/2022]
Abstract
Reactive oxygen species (ROS) damage is a crucial method with which to inhibit tumor cell proliferation; however, tumor cells can reduce ROS damage by modulating multiple repair mechanisms, thus, reducing the efficacy of ROS damage in tumor therapy. In this study, we built an ultrasound-triggered ROS damage nanoamplifier using a synergistic strategy consisting of ROS damage and decreased tumor self-protection capability to enhance the treatment efficacy of mutant p53 tumors. A ROS damage nanoamplifier (PT@PTGA) was fabricated using amphiphilic polyglutamic acid (PTGA) to load with a sonosensitizer (protoporphyrin IX, PpIX) and an MTH1 inhibitor (TH287). Under ultrasonic excitation, PpIX catalyzes oxygen to produce singlet oxygen and release TH287 to inhibit MTH1 activity, thereby causing the accumulation of 8-oxo-dGTP, which enhances DNA damage and further induces cell apoptosis. In addition, TH287 allies with ROS to eliminate the mutated p53 protein in tumor cells, thus reducing the self-protective capacity of tumor cells. As a result, the "internal and external" aspects were combined to enhance sensitization for mutant p53 tumor therapy. The construction of a ROS nanoamplifier not only provides an effective strategy for the treatment of mutant p53 tumors but also supplies an integrated platform for tumor diagnosis and therapy.
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Affiliation(s)
- Xiang Wang
- Institute of Bismuth and Rhenium Science & School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Kang Song
- Institute of Bismuth and Rhenium Science & School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Yan Fan
- Engineering Research Center of Optical Instrument and System, the Ministry of Education, Shanghai Key Laboratory of Modern Optical System, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Jun Du
- Institute of Bismuth and Rhenium Science & School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Jinliang Liu
- Institute of Bismuth and Rhenium Science & School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Jiayu Xu
- Institute of Bismuth and Rhenium Science & School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Lulu Zheng
- Engineering Research Center of Optical Instrument and System, the Ministry of Education, Shanghai Key Laboratory of Modern Optical System, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Ruizhuo Ouyang
- Institute of Bismuth and Rhenium Science & School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China; Shanghai Collaborative Innovation Center of Energy Therapy for Tumors, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Yuhao Li
- Institute of Bismuth and Rhenium Science & School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China; Shanghai Collaborative Innovation Center of Energy Therapy for Tumors, University of Shanghai for Science and Technology, Shanghai 200093, China.
| | - Yuqing Miao
- Institute of Bismuth and Rhenium Science & School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China; Shanghai Collaborative Innovation Center of Energy Therapy for Tumors, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Dawei Zhang
- Engineering Research Center of Optical Instrument and System, the Ministry of Education, Shanghai Key Laboratory of Modern Optical System, University of Shanghai for Science and Technology, Shanghai 200093, China
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13
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Zhao Y, Feng HM, Yan WJ, Qin Y. Identification of the Signature Genes and Network of Reactive Oxygen Species Related Genes and DNA Repair Genes in Lung Adenocarcinoma. Front Med (Lausanne) 2022; 9:833829. [PMID: 35308531 PMCID: PMC8929513 DOI: 10.3389/fmed.2022.833829] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2021] [Accepted: 01/10/2022] [Indexed: 01/21/2023] Open
Abstract
Reactive Oxygen Species (ROS) are present in excess amounts in patients with tumors, and these ROS can kill and destroy tumor cells. Therefore, tumor cells upregulate ROS-related genes to protect them and reduce their destructing effects. Cancer cells already damaged by ROS can be repaired by expressing DNA repair genes consequently promoting their proliferation. The present study aimed to identify the signature genes of and regulating network of ROS-related genes and DNA repair genes in lung adenocarcinoma (LUAD) using transcriptomic data of public databases. The LUAD transcriptome data in the TCGA database and gene expressions from Gene Expression Omnibus (GEO) were analyzed and samples were clustered into 5 ROS-related categories and 6 DNA repair categories. Survival analysis revealed a significant difference in patient survival between the two classification methods. In addition, the samples corresponding to the two categories overlap, thus, the gene expression profile of the same sample with different categories and survival prognosis was further explored, and the connection between ROS-related and DNA repair genes was investigated. The interactive sample recombination classification was used, revealing that the patient's prognosis was worse when the ROS-related and DNA repair genes were expressed at the same time. The further research on the potential regulatory network of the two categories of genes and the correlation analysis revealed that ROS-related genes and DNA repair genes have a mutual regulatory relationship. The ROS-related genes namely NQO1, TXNRD1, and PRDX4 could establish links with other DNA repair genes through the DNA repair gene NEIL3, thereby balancing the level of ROS. Therefore, targeting ROS-related genes and DNA repair genes might be a promising strategy in the treatment of LUAD. Finally, a survival prognostic model of ROS-related genes and DNA repair genes was established (TERT, PRKDC, PTTG1, SMUG1, TXNRD1, CAT, H2AFX, and PFKP). The risk score obtained from our survival prognostic model could be used as an independent prognostic factor in LUAD patients.
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Affiliation(s)
- Ye Zhao
- First Clinical Medical College, Lanzhou University, Lanzhou, China
| | - Hai-Ming Feng
- Department of Thoracic Surgery, The Second Affiliated Hospital of Lanzhou University, Lanzhou, China
| | - Wei-Jian Yan
- Department of Thoracic Surgery, The Second Affiliated Hospital of Lanzhou University, Lanzhou, China
| | - Yu Qin
- First Clinical Medical College, Lanzhou University, Lanzhou, China
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14
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Wang Y, Chen P, Chen X, Gong D, Wu Y, Huang L, Chen Y. ROS-Induced DCTPP1 Upregulation Contributes to Cisplatin Resistance in Ovarian Cancer. Front Mol Biosci 2022; 9:838006. [PMID: 35223993 PMCID: PMC8865183 DOI: 10.3389/fmolb.2022.838006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Accepted: 01/20/2022] [Indexed: 12/20/2022] Open
Abstract
Cisplatin resistance hinders the improvement of the prognosis of patients with ovarian cancer. Cisplatin induces cancer cell apoptosis by inducing reactive oxygen species (ROS). dCTP pyrophosphatase 1 (DCTPP1) is a newly discovered dNTP pyrophosphatase. This study aimed to identify the role of DCTPP1 in oxidative stress and cisplatin response of ovarian cancer. Our results indicates cisplatin-induced ROS generation was responsible for the upregulation of DCTPP1 in ovarian cancer cells, whereas DCTPP1 knockdown significantly enhanced the sensitivity of ovarian cancer cells to cisplatin, reflect in reactive oxygen species (ROS) generation, double-strand DNA breaks, and cell apoptosis. The expression of redox-related genes and the activation of the PI3/Akt signaling pathway were also inhibited by DCTPP1 knockdown. Our data proposes that the development of therapeutic approaches targeting DCTPP1 may be useful in the treatment of ovarian cancer.
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Affiliation(s)
- Yu Wang
- Obstetrics and Gynecology Center, Nanfang Hospital, Guangzhou, China
| | - Peishi Chen
- School of Medical Laboratory and Biotechnology, Southern Medical University, Guangzhou, China
| | - Xueping Chen
- Obstetrics and Gynecology Center, Nanfang Hospital, Guangzhou, China
| | - Daoyuan Gong
- Guangzhou Customs District technology center, Foshan, China
| | - Yingsong Wu
- School of Medical Laboratory and Biotechnology, Southern Medical University, Guangzhou, China
| | - Liping Huang
- Obstetrics and Gynecology Center, Nanfang Hospital, Guangzhou, China
- *Correspondence: Liping Huang, ; Yao Chen,
| | - Yao Chen
- School of Medical Laboratory and Biotechnology, Southern Medical University, Guangzhou, China
- *Correspondence: Liping Huang, ; Yao Chen,
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15
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De Rosa M, Johnson SA, Opresko PL. Roles for the 8-Oxoguanine DNA Repair System in Protecting Telomeres From Oxidative Stress. Front Cell Dev Biol 2021; 9:758402. [PMID: 34869348 PMCID: PMC8640134 DOI: 10.3389/fcell.2021.758402] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Accepted: 10/27/2021] [Indexed: 11/27/2022] Open
Abstract
Telomeres are protective nucleoprotein structures that cap linear chromosome ends and safeguard genome stability. Progressive telomere shortening at each somatic cell division eventually leads to critically short and dysfunctional telomeres, which can contribute to either cellular senescence and aging, or tumorigenesis. Human reproductive cells, some stem cells, and most cancer cells, express the enzyme telomerase to restore telomeric DNA. Numerous studies have shown that oxidative stress caused by excess reactive oxygen species is associated with accelerated telomere shortening and dysfunction. Telomeric repeat sequences are remarkably susceptible to oxidative damage and are preferred sites for the production of the mutagenic base lesion 8-oxoguanine, which can alter telomere length homeostasis and integrity. Therefore, knowledge of the repair pathways involved in the processing of 8-oxoguanine at telomeres is important for advancing understanding of the pathogenesis of degenerative diseases and cancer associated with telomere instability. The highly conserved guanine oxidation (GO) system involves three specialized enzymes that initiate distinct pathways to specifically mitigate the adverse effects of 8-oxoguanine. Here we introduce the GO system and review the studies focused on investigating how telomeric 8-oxoguanine processing affects telomere integrity and overall genome stability. We also discuss newly developed technologies that target oxidative damage selectively to telomeres to investigate roles for the GO system in telomere stability.
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Affiliation(s)
- Mariarosaria De Rosa
- Department of Environmental and Occupational Health, University of Pittsburgh Graduate School of Public Health and UPMC Hillman Cancer Center, Pittsburgh, PA, United States
| | - Samuel A Johnson
- Department of Environmental and Occupational Health, University of Pittsburgh Graduate School of Public Health and UPMC Hillman Cancer Center, Pittsburgh, PA, United States
| | - Patricia L Opresko
- Department of Environmental and Occupational Health, University of Pittsburgh Graduate School of Public Health and UPMC Hillman Cancer Center, Pittsburgh, PA, United States
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16
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Kuttikrishnan S, Prabhu KS, Khan AQ, Alali FQ, Ahmad A, Uddin S. Thiostrepton inhibits growth and induces apoptosis by targeting FoxM1/SKP2/MTH1 axis in B-precursor acute lymphoblastic leukemia cells. Leuk Lymphoma 2021; 62:3170-3180. [PMID: 34369229 DOI: 10.1080/10428194.2021.1957873] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Forkhead box M1 (FoxM1) is a transcription factor that plays an important role in the etiology of many cancers, however, its role has not been elucidated in B-precursor acute lymphoblastic leukemia (B-pre-ALL). In the current study, we showed that the downregulation of FoxM1 by its inhibitor thiostrepton inhibited cell viability and induced caspase-dependent apoptosis in a panel of B-pre-ALL cell lines. Thiostrepton led downregulation of FoxM1 accompanied by decreased expression of Aurora kinase A, B, matrix metalloproteinases, and oncogene SKP2 as well as MTH1. Downregulation of the FoxM1/SKP2/MTH1 axis led to increase in the Bax/Bcl2 ratio and suppression of antiapoptotic proteins. Thiostrepton-mediated apoptosis was prevented by N-acetyl cysteine, a scavenger of reactive oxygen species. Co-treatment of B-pre-ALL with subtoxic doses of thiostrepton and bortezomib potentiated the proapoptotic action. Altogether, our results suggest that targeting FoxM1expression could be an attractive strategy for the treatment of B-pre-ALL.
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Affiliation(s)
- Shilpa Kuttikrishnan
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar.,College of Pharmacy, Qatar University, Doha, Qatar
| | - Kirti S Prabhu
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Abdul Q Khan
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Feras Q Alali
- College of Pharmacy, Qatar University, Doha, Qatar.,Biomedical and Pharmaceutical Research Unit, QU Health, Qatar University
| | - Aamir Ahmad
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar.,Dermatology Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Shahab Uddin
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar.,Dermatology Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar.,Laboratory of Animal Research Center, Qatar University, Doha, Qatar
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17
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Funahashi S, Okazaki Y, Akatsuka S, Takahashi T, Sakumi K, Nakabeppu Y, Toyokuni S. Mth1 deficiency provides longer survival upon intraperitoneal crocidolite injection in female mice. Free Radic Res 2020; 54:195-205. [PMID: 32183600 DOI: 10.1080/10715762.2020.1743285] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Exposure to asbestos fiber is central to mesothelial carcinogenesis. Recent sequencing studies on human and rodent malignant mesothelioma (MM) revealed frequently mutated genes, including CDKN2A, BAP1 and NF2. Crocidolite directly or indirectly catalyses the generation of hydroxyl radicals, which appears to be the major driving force for mesothelial mutations. DNA base modification is an oxidative DNA damage mechanism, where 8-hydroxy-2'-deoxyguanosine (8-OHdG) is the most abundant modification both physiologically and pathologically. Multiple distinct mechanisms work together to decrease the genomic level of 8-OHdG through the enzymatic activities of Mutyh, Ogg1 and Mth1. Knockout of one or multiple enzymes is not lethal but increases the incidence of tumors. Here, we used single knockout (KO) mice to test whether the deficiency of these three genes affects the incidence and prognosis of asbestos-induced MM. Intraperitoneal injection of 3 mg crocidolite induced MM at a fraction of 14.8% (4/27) in Mth1 KO, 41.4% (12/29) in Mutyh KO and 24.0% (6/25) in Ogg1 KO mice, whereas 31.7% (20/63) induction was observed in C57BL/6 wild-type (Wt) mice. The lifespan of female Mth1 KO mice was longer than that of female Wt mice (p = 0.0468). Whole genome scanning of MM with array-based comparative genomic hybridization revealed rare genomic alterations compared to MM in rats and humans. These results indicate that neither Mutyh deficiency nor Ogg1 deficiency promotes crocidolite-induced MM in mice, but the sanitizing nucleotide pool with Mth1 is advantageous in crocidolite-induced mesothelial carcinogenesis.
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Affiliation(s)
- Satomi Funahashi
- Department of Pathology and Biological Responses, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan.,Department of Food and Nutritional Environment, Kinjo Gakuin University of Human Life and Environment, Nagoya, Aichi, Japan
| | - Yasumasa Okazaki
- Department of Pathology and Biological Responses, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
| | - Shinya Akatsuka
- Department of Pathology and Biological Responses, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
| | - Takashi Takahashi
- Division of Molecular Carcinogenesis, Center for Neurological Diseases and Cancer, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan.,Aichi Cancer Center Research Institute, Nagoya, Aichi, Japan
| | - Kunihiko Sakumi
- Division of Neurofunctional Genomics, Department of Immunobiology and Neuroscience, Medical Institute of Bioregulation, Kyusyu University, Higashi-ku, Fukuoka, Japan
| | - Yusaku Nakabeppu
- Division of Neurofunctional Genomics, Department of Immunobiology and Neuroscience, Medical Institute of Bioregulation, Kyusyu University, Higashi-ku, Fukuoka, Japan
| | - Shinya Toyokuni
- Department of Pathology and Biological Responses, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan.,Sydney Medical School, The University of Sydney, Sydney, NSW, Australia
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18
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Arczewska KD, Krasuska W, Stachurska A, Karpińska K, Sikorska J, Kiedrowski M, Lange D, Stępień T, Czarnocka B. hMTH1 and GPX1 expression in human thyroid tissue is interrelated to prevent oxidative DNA damage. DNA Repair (Amst) 2020; 95:102954. [PMID: 32877752 DOI: 10.1016/j.dnarep.2020.102954] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 08/09/2020] [Accepted: 08/13/2020] [Indexed: 12/14/2022]
Abstract
Oxidative stress (OS) is recognized as disturbance of cellular equilibrium between reactive oxygen species (ROS) formation and their elimination by antioxidant defense systems. One example of ROS-mediated damage is generation of potentially mutagenic DNA precursor, 8-oxodGTP. In human cells genomic 8-oxodGTP incorporation is prevented by the MutT homologue 1 (MTH1 or hMTH1 for human MTH1) protein. It is well established that malignant cells, including thyroid cancer cells, require hMTH1 for maintaining proliferation and cancerous transformation phenotype. Above observations led to the development of hMTH1 inhibitors as novel anticancer therapeutics. In the current study we present extensive analysis of oxidative stress responses determining sensitivity to hMTH1 deficiency in cultured thyroid cells. We observe here that hMTH1 depletion results in downregulation of several glutathione-dependent OS defense system factors, including GPX1 and GCLM, making some of the tested thyroid cell lines highly dependent on glutathione levels. This is evidenced by the increased ROS burden and enhanced proliferation defect after combination of hMTH1 siRNA and glutathione synthesis inhibition. Moreover, due to the lack of data on hMTH1 expression in human thyroid tumor specimens we decided to perform detailed analysis of hMTH1 expression in thyroid tumor and peri-tumoral tissues from human patients. Our results allow us to propose here that anticancer activity of hMTH1 suppression may be boosted by combination with agents modulating glutathione pool, but further studies are necessary to precisely identify backgrounds susceptible to such combination treatment.
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Affiliation(s)
- Katarzyna D Arczewska
- Department of Biochemistry and Molecular Biology, Centre of Postgraduate Medical Education, Marymoncka 99/103, 01-813 Warsaw, Poland.
| | - Wanda Krasuska
- Department of Biochemistry and Molecular Biology, Centre of Postgraduate Medical Education, Marymoncka 99/103, 01-813 Warsaw, Poland
| | - Anna Stachurska
- Department of Immunohematology, Centre of Postgraduate Medical Education, Marymoncka 99/103, 01-813 Warsaw, Poland
| | - Kamila Karpińska
- Department of Biochemistry and Molecular Biology, Centre of Postgraduate Medical Education, Marymoncka 99/103, 01-813 Warsaw, Poland; Laboratory of the Molecular Biology of Cancer, Centre of New Technologies, University of Warsaw, S. Banacha 2c, 02-097 Warsaw, Poland
| | - Justyna Sikorska
- Department of Immunohematology, Centre of Postgraduate Medical Education, Marymoncka 99/103, 01-813 Warsaw, Poland
| | - Mirosław Kiedrowski
- Clinical Department of Oncology and Hematology, Central Clinical Hospital of the Ministry of Interior and Administration in Warsaw, Center of Postgraduate Medical Education, Wołowska 137, 02-507 Warsaw, Poland
| | - Dariusz Lange
- Tumor Pathology Department, Maria Skłodowska-Curie National Research Institute of Oncology, Gliwice Branch, Wybrzeże Armii Krajowej 15, 44-102 Gliwice, Poland
| | - Tomasz Stępień
- Department of General and Endocrinological Surgery, Copernicus Memorial Hospital, Pabianicka 62, 93-036 Łódź, Poland
| | - Barbara Czarnocka
- Department of Biochemistry and Molecular Biology, Centre of Postgraduate Medical Education, Marymoncka 99/103, 01-813 Warsaw, Poland
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19
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Sanford SL, Welfer GA, Freudenthal BD, Opresko PL. Mechanisms of telomerase inhibition by oxidized and therapeutic dNTPs. Nat Commun 2020; 11:5288. [PMID: 33082336 PMCID: PMC7576608 DOI: 10.1038/s41467-020-19115-y] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Accepted: 09/28/2020] [Indexed: 12/19/2022] Open
Abstract
Telomerase is a specialized reverse transcriptase that adds GGTTAG repeats to chromosome ends and is upregulated in most human cancers to enable limitless proliferation. Here, we uncover two distinct mechanisms by which naturally occurring oxidized dNTPs and therapeutic dNTPs inhibit telomerase-mediated telomere elongation. We conduct a series of direct telomerase extension assays in the presence of modified dNTPs on various telomeric substrates. We provide direct evidence that telomerase can add the nucleotide reverse transcriptase inhibitors ddITP and AZT-TP to the telomeric end, causing chain termination. In contrast, telomerase continues elongation after inserting oxidized 2-OH-dATP or therapeutic 6-thio-dGTP, but insertion disrupts translocation and inhibits further repeat addition. Kinetics reveal that telomerase poorly selects against 6-thio-dGTP, inserting with similar catalytic efficiency as dGTP. Furthermore, telomerase processivity factor POT1-TPP1 fails to restore processive elongation in the presence of inhibitory dNTPs. These findings reveal mechanisms for targeting telomerase with modified dNTPs in cancer therapy.
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Affiliation(s)
- Samantha L Sanford
- Department of Environmental and Occupational Health, University of Pittsburgh Graduate School of Public Health and UPMC Hillman Cancer Center, Pittsburgh, PA, USA
| | - Griffin A Welfer
- Department of Biochemistry and Molecular Biology, University of Kansas Medical Center, Kansas City, KS, USA
| | - Bret D Freudenthal
- Department of Biochemistry and Molecular Biology, University of Kansas Medical Center, Kansas City, KS, USA
| | - Patricia L Opresko
- Department of Environmental and Occupational Health, University of Pittsburgh Graduate School of Public Health and UPMC Hillman Cancer Center, Pittsburgh, PA, USA.
- Center for Nucleic Acids Science and Technology, Carnegie Mellon University, Pittsburgh, PA, USA.
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20
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Kulikova VA, Nikiforov AA. Role of NUDIX Hydrolases in NAD and ADP-Ribose Metabolism in Mammals. BIOCHEMISTRY. BIOKHIMIIA 2020; 85:883-894. [PMID: 33045949 DOI: 10.1134/s0006297920080040] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 06/21/2020] [Accepted: 06/22/2020] [Indexed: 12/20/2022]
Abstract
Proteins of the NUDIX hydrolase (NUDT) superfamily that cleave organic pyrophosphates are found in all classes of organisms, from archaea and bacteria to higher eukaryotes. In mammals, NUDTs exhibit a wide range of functions and are characterized by different substrate specificity and intracellular localization. They control the concentration of various metabolites in the cell, including key regulatory molecules such as nicotinamide adenine dinucleotide (NAD), ADP-ribose, and their derivatives. In this review, we discuss the role of NUDT proteins in the metabolism of NAD and ADP-ribose in human and animal cells.
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Affiliation(s)
- V A Kulikova
- Peter the Great St. Petersburg Polytechnic University, Saint Petersburg, 195251, Russia.
- Institute of Cytology, Russian Academy of Sciences, Saint Petersburg, 194064, Russia
- Sechenov Institute of Evolutionary Physiology and Biochemistry, Russian Academy of Sciences, Saint Petersburg, 194223, Russia
| | - A A Nikiforov
- Institute of Cytology, Russian Academy of Sciences, Saint Petersburg, 194064, Russia
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21
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Oxidative Damage in Sporadic Colorectal Cancer: Molecular Mapping of Base Excision Repair Glycosylases in Colorectal Cancer Patients. Int J Mol Sci 2020; 21:ijms21072473. [PMID: 32252452 PMCID: PMC7177219 DOI: 10.3390/ijms21072473] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 03/30/2020] [Accepted: 03/31/2020] [Indexed: 12/12/2022] Open
Abstract
Oxidative stress with subsequent premutagenic oxidative DNA damage has been implicated in colorectal carcinogenesis. The repair of oxidative DNA damage is initiated by lesion-specific DNA glycosylases (hOGG1, NTH1, MUTYH). The direct evidence of the role of oxidative DNA damage and its repair is proven by hereditary syndromes (MUTYH-associated polyposis, NTHL1-associated tumor syndrome), where germline mutations cause loss-of-function in glycosylases of base excision repair, thus enabling the accumulation of oxidative DNA damage and leading to the adenoma-colorectal cancer transition. Unrepaired oxidative DNA damage often results in G:C>T:A mutations in tumor suppressor genes and proto-oncogenes and widespread occurrence of chromosomal copy-neutral loss of heterozygosity. However, the situation is more complicated in complex and heterogeneous disease, such as sporadic colorectal cancer. Here we summarized our current knowledge of the role of oxidative DNA damage and its repair on the onset, prognosis and treatment of sporadic colorectal cancer. Molecular and histological tumor heterogeneity was considered. Our study has also suggested an additional important source of oxidative DNA damage due to intestinal dysbiosis. The roles of base excision repair glycosylases (hOGG1, MUTYH) in tumor and adjacent mucosa tissues of colorectal cancer patients, particularly in the interplay with other factors (especially microenvironment), deserve further attention. Base excision repair characteristics determined in colorectal cancer tissues reflect, rather, a disease prognosis. Finally, we discuss the role of DNA repair in the treatment of colon cancer, since acquired or inherited defects in DNA repair pathways can be effectively used in therapy.
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22
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Samaranayake GJ, Troccoli CI, Zhang L, Huynh M, Jayaraj CJ, Ji D, McPherson L, Onishi Y, Nguyen DM, Robbins DJ, Karbaschi M, Cooke MS, Barrientos A, Kool ET, Rai P. The Existence of MTH1-independent 8-oxodGTPase Activity in Cancer Cells as a Compensatory Mechanism against On-target Effects of MTH1 Inhibitors. Mol Cancer Ther 2019; 19:432-446. [PMID: 31744893 DOI: 10.1158/1535-7163.mct-19-0437] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Revised: 09/20/2019] [Accepted: 11/12/2019] [Indexed: 01/28/2023]
Abstract
Investigations into the human 8-oxodGTPase, MutT Homolog 1 (MTH1), have risen sharply since the first-in-class MTH1 inhibitors were reported to be highly tumoricidal. However, MTH1 as a cancer therapeutic target is currently controversial because subsequently developed inhibitors did not exhibit similar cytotoxic effects. Here, we provide the first direct evidence for MTH1-independent 8-oxodGTPase function in human cancer cells and human tumors, using a novel ATP-releasing guanine-oxidized (ARGO) chemical probe. Our studies show that this functionally redundant 8-oxodGTPase activity is not decreased by five different published MTH1-targeting small molecules or by MTH1 depletion. Significantly, while only the two first-in-class inhibitors, TH588 and TH287, reduced cancer cell viability, all five inhibitors evaluated in our studies decreased 8-oxodGTPase activity to a similar extent. Thus, the reported efficacy of the first-in-class MTH1 inhibitors does not arise from their inhibition of MTH1-specific 8-oxodGTPase activity. Comparison of DNA strand breaks, genomic 8-oxoguanine incorporation, or alterations in cellular oxidative state by TH287 versus the noncytotoxic inhibitor, IACS-4759, contradict that the cytotoxicity of the former results solely from increased levels of oxidatively damaged genomic DNA. Thus, our findings indicate that mechanisms unrelated to oxidative stress or DNA damage likely underlie the reported efficacy of the first-in-class inhibitors. Our study suggests that MTH1 functional redundancy, existing to different extents in all cancer lines and human tumors evaluated in our study, is a thus far undefined factor which is likely to be critical in understanding the importance of MTH1 and its clinical targeting in cancer.
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Affiliation(s)
- Govindi J Samaranayake
- Department of Medicine/Division of Medical Oncology, University of Miami Miller School of Medicine, Miami, Florida
- Sheila and David Fuente Graduate Program in Cancer Biology, University of Miami Miller School of Medicine, Miami, Florida
| | - Clara I Troccoli
- Department of Medicine/Division of Medical Oncology, University of Miami Miller School of Medicine, Miami, Florida
- Sheila and David Fuente Graduate Program in Cancer Biology, University of Miami Miller School of Medicine, Miami, Florida
| | - Ling Zhang
- Department of Medicine/Division of Medical Oncology, University of Miami Miller School of Medicine, Miami, Florida
| | - Mai Huynh
- University of Miami, Coral Gables, Florida
| | | | - Debin Ji
- Department of Chemistry, Stanford University, Stanford, California
| | - Lisa McPherson
- Department of Medicine/Oncology, Stanford University, Stanford, California
| | - Yoshiyuki Onishi
- Department of Chemistry, Stanford University, Stanford, California
| | - Dao M Nguyen
- Sylvester Comprehensive Cancer Center, Miami, Florida
- Department of Surgery, University of Miami Miller School of Medicine, Miami, Florida
| | - David J Robbins
- Sylvester Comprehensive Cancer Center, Miami, Florida
- Department of Surgery, University of Miami Miller School of Medicine, Miami, Florida
| | - Mahsa Karbaschi
- Department of Human and Molecular Genetics, Florida International University, Miami, Florida
- Oxidative Stress Group, Department of Environmental Health Sciences, Florida International University, Miami, Florida
| | - Marcus S Cooke
- Oxidative Stress Group, Department of Environmental Health Sciences, Florida International University, Miami, Florida
| | - Antonio Barrientos
- Department of Neurology, University of Miami Miller School of Medicine, Miami, Florida
| | - Eric T Kool
- Department of Chemistry, Stanford University, Stanford, California
| | - Priyamvada Rai
- Department of Medicine/Division of Medical Oncology, University of Miami Miller School of Medicine, Miami, Florida.
- Sylvester Comprehensive Cancer Center, Miami, Florida
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23
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Camici M, Garcia-Gil M, Pesi R, Allegrini S, Tozzi MG. Purine-Metabolising Enzymes and Apoptosis in Cancer. Cancers (Basel) 2019; 11:cancers11091354. [PMID: 31547393 PMCID: PMC6769685 DOI: 10.3390/cancers11091354] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 09/03/2019] [Accepted: 09/07/2019] [Indexed: 12/17/2022] Open
Abstract
The enzymes of both de novo and salvage pathways for purine nucleotide synthesis are regulated to meet the demand of nucleic acid precursors during proliferation. Among them, the salvage pathway enzymes seem to play the key role in replenishing the purine pool in dividing and tumour cells that require a greater amount of nucleotides. An imbalance in the purine pools is fundamental not only for preventing cell proliferation, but also, in many cases, to promote apoptosis. It is known that tumour cells harbour several mutations that might lead to defective apoptosis-inducing pathways, and this is probably at the basis of the initial expansion of the population of neoplastic cells. Therefore, knowledge of the molecular mechanisms that lead to apoptosis of tumoural cells is key to predicting the possible success of a drug treatment and planning more effective and focused therapies. In this review, we describe how the modulation of enzymes involved in purine metabolism in tumour cells may affect the apoptotic programme. The enzymes discussed are: ectosolic and cytosolic 5'-nucleotidases, purine nucleoside phosphorylase, adenosine deaminase, hypoxanthine-guanine phosphoribosyltransferase, and inosine-5'-monophosphate dehydrogenase, as well as recently described enzymes particularly expressed in tumour cells, such as deoxynucleoside triphosphate triphosphohydrolase and 7,8-dihydro-8-oxoguanine triphosphatase.
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Affiliation(s)
- Marcella Camici
- Dipartimento di Biologia, Unità di Biochimica, Via S. Zeno 51, 56127 Pisa, Italy.
| | - Mercedes Garcia-Gil
- Dipartimento di Biologia, Unità di Fisiologia Generale, Via S. Zeno 31, 56127 Pisa, Italy
| | - Rossana Pesi
- Dipartimento di Biologia, Unità di Biochimica, Via S. Zeno 51, 56127 Pisa, Italy
| | - Simone Allegrini
- Dipartimento di Biologia, Unità di Biochimica, Via S. Zeno 51, 56127 Pisa, Italy
| | - Maria Grazia Tozzi
- Dipartimento di Biologia, Unità di Biochimica, Via S. Zeno 51, 56127 Pisa, Italy
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24
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McPherson LA, Troccoli CI, Ji D, Bowles AE, Gardiner ML, Mohsen MG, Nagathihalli NS, Nguyen DM, Robbins DJ, Merchant NB, Kool ET, Rai P, Ford JM. Increased MTH1-specific 8-oxodGTPase activity is a hallmark of cancer in colon, lung and pancreatic tissue. DNA Repair (Amst) 2019; 83:102644. [PMID: 31311767 DOI: 10.1016/j.dnarep.2019.102644] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Revised: 06/24/2019] [Accepted: 07/04/2019] [Indexed: 12/11/2022]
Abstract
Cellular homeostasis is dependent on a balance between DNA damage and DNA repair mechanisms. Cells are constantly assaulted by both exogenous and endogenous stimuli leading to high levels of reactive oxygen species (ROS) that cause oxidation of the nucleotide dGTP to 8-oxodGTP. If this base is incorporated into DNA and goes unrepaired, it can result in G > T transversions, leading to genomic DNA damage. MutT Homolog 1 (MTH1) is a nucleoside diphosphate X (Nudix) pyrophosphatase that can remove 8-oxodGTP from the nucleotide pool before it is incorporated into DNA by hydrolyzing it into 8-oxodGMP. MTH1 expression has been shown to be elevated in many cancer cells and is thought to be a survival mechanism by which a cancer cell can stave off the effects of high ROS that can result in cell senescence or death. It has recently become a target of interest in cancer because it is thought that inhibiting MTH1 can increase genotoxic damage and cytotoxicity. Determining the role of MTH1 in normal and cancer cells is confounded by an inability to reliably and directly measure its native enzymatic activity. We have used the chimeric ATP-releasing guanine-oxidized (ARGO) probe that combines 8-oxodGTP and ATP to measure MTH1 enzymatic activity in colorectal cancer (CRC), non-small cell lung cancer (NSCLC) and pancreatic ductal adenocarcinoma (PDAC) along with patient-matched normal tissue. MTH1 8-oxodGTPase activity is significantly increased in tumors across all three tissue types, indicating that MTH1 is a marker of cancer. MTH1 activity measured by ARGO assay was compared to mRNA and protein expression measured by RT-qPCR and Western blot in the CRC tissue pairs, revealing a positive correlation between ARGO assay and Western blot, but little correlation with RT-qPCR in these samples. The adoption of the ARGO assay will help in establishing the level of MTH1 activity in model systems and in assessing the effects of MTH1 modulation in the treatment of cancer.
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Affiliation(s)
- Lisa A McPherson
- Division of Oncology, Stanford University School of Medicine, Stanford, CA 94305-5151, United States
| | - Clara I Troccoli
- Department of Medicine/Division of Medical Oncology, University of Miami Miller School of Medicine, Miami, FL 33136, United States; Sheila and David Fuente Graduate Program in Cancer Biology, University of Miami Miller School of Medicine, Miami, FL 33136, United States
| | - Debin Ji
- Department of Chemistry, Stanford University, Stanford, CA 94305-4401, United States
| | - Annie E Bowles
- Division of Oncology, Stanford University School of Medicine, Stanford, CA 94305-5151, United States
| | - Makelle L Gardiner
- Division of Oncology, Stanford University School of Medicine, Stanford, CA 94305-5151, United States
| | - Michael G Mohsen
- Department of Chemistry, Stanford University, Stanford, CA 94305-4401, United States
| | - Nagaraj S Nagathihalli
- Sylvester Comprehensive Cancer Center, Miami, FL 33136, United States; Department of Surgery, University of Miami Miller School of Medicine, Miami, FL 33136, United States
| | - Dao M Nguyen
- Sylvester Comprehensive Cancer Center, Miami, FL 33136, United States; Department of Surgery, University of Miami Miller School of Medicine, Miami, FL 33136, United States
| | - David J Robbins
- Sylvester Comprehensive Cancer Center, Miami, FL 33136, United States; Department of Surgery, University of Miami Miller School of Medicine, Miami, FL 33136, United States
| | - Nipun B Merchant
- Sylvester Comprehensive Cancer Center, Miami, FL 33136, United States; Department of Surgery, University of Miami Miller School of Medicine, Miami, FL 33136, United States
| | - Eric T Kool
- Department of Chemistry, Stanford University, Stanford, CA 94305-4401, United States
| | - Priyamvada Rai
- Department of Medicine/Division of Medical Oncology, University of Miami Miller School of Medicine, Miami, FL 33136, United States; Sylvester Comprehensive Cancer Center, Miami, FL 33136, United States.
| | - James M Ford
- Division of Oncology, Stanford University School of Medicine, Stanford, CA 94305-5151, United States.
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