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Guilz NC, Ahn YO, Fatima H, Pedroza LA, Seo S, Soni RK, Wang N, Egli D, Mace EM. Replication Stress in Activated Human NK Cells Induces Sensitivity to Apoptosis. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2024; 213:40-51. [PMID: 38809096 DOI: 10.4049/jimmunol.2300843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Accepted: 04/29/2024] [Indexed: 05/30/2024]
Abstract
NK cells are innate immune effectors that kill virally infected or malignant cells. NK cell deficiency (NKD) occurs when NK cell development or function is impaired and variants in MCM4, GINS1, MCM10, and GINS4 result in NKD. Although NK cells are strongly impacted by mutational deficiencies in helicase proteins, the mechanisms underlying this specific susceptibility are poorly understood. In this study, we induced replication stress in activated NK cells or T cells by chemical and genetic methods. We found that the CD56bright subset of NK cells accumulates more DNA damage and replication stress during activation than do CD56dim NK cells or T cells. Aphidicolin treatment increases apoptosis of CD56bright NK cells through increased pan-caspase expression and decreases perforin expression in surviving cells. These findings show that sensitivity to replication stress affects NK cell survival and function and contributes to NKD.
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Affiliation(s)
- Nicole C Guilz
- Department of Pediatrics, Columbia University Vagelos College of Physicians and Surgeons, New York, NY
| | - Yong-Oon Ahn
- Department of Pediatrics, Columbia University Vagelos College of Physicians and Surgeons, New York, NY
| | - Hijab Fatima
- Department of Pediatrics, Columbia University Vagelos College of Physicians and Surgeons, New York, NY
| | - Luis Alberto Pedroza
- Department of Pediatrics, Columbia University Vagelos College of Physicians and Surgeons, New York, NY
| | - Seungmae Seo
- Department of Pediatrics, Columbia University Vagelos College of Physicians and Surgeons, New York, NY
| | - Rajesh Kumar Soni
- Proteomics and Macromolecular Crystallography Shared Resource, Herbert Irving Comprehensive Cancer Center, Columbia University, New York, NY
| | - Ning Wang
- Pediatrics and Obstetrics and Gynecology, Columbia Stem Cell Initiative, Naomi Berrie Diabetes Center, Columbia University Vagelos College of Physicians and Surgeons, New York, NY
| | - Dieter Egli
- Pediatrics and Obstetrics and Gynecology, Columbia Stem Cell Initiative, Naomi Berrie Diabetes Center, Columbia University Vagelos College of Physicians and Surgeons, New York, NY
| | - Emily M Mace
- Department of Pediatrics, Columbia University Vagelos College of Physicians and Surgeons, New York, NY
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2
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Radhakrishnan A, Gangopadhyay R, Sharma C, Kapardar RK, Sharma NK, Srivastav R. Unwinding Helicase MCM Functionality for Diagnosis and Therapeutics of Replication Abnormalities Associated with Cancer: A Review. Mol Diagn Ther 2024; 28:249-264. [PMID: 38530633 DOI: 10.1007/s40291-024-00701-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/28/2024] [Indexed: 03/28/2024]
Abstract
The minichromosome maintenance (MCM) protein is a component of an active helicase that is essential for the initiation of DNA replication. Dysregulation of MCM functions contribute to abnormal cell proliferation and genomic instability. The interactions of MCM with cellular factors, including Cdc45 and GINS, determine the formation of active helicase and functioning of helicase. The functioning of MCM determines the fate of DNA replication and, thus, genomic integrity. This complex is upregulated in precancerous cells and can act as an important tool for diagnostic applications. The MCM protein complex can be an important broad-spectrum therapeutic target in various cancers. Investigations have supported the potential and applications of MCM in cancer diagnosis and its therapeutics. In this article, we discuss the physiological roles of MCM and its associated factors in DNA replication and cancer pathogenesis.
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Affiliation(s)
| | - Ritwik Gangopadhyay
- Amity Institute of Biotechnology, Amity University, Noida, Uttar Pradesh, India
| | | | | | - Nilesh Kumar Sharma
- Cancer and Translational Research Lab, Dr. DY Patil Biotechnology and Bioinformatics Institute, Dr. DY Patil Vidyapeeth, Pune, Maharashtra, India
| | - Rajpal Srivastav
- Amity Institute of Biotechnology, Amity University, Noida, Uttar Pradesh, India.
- Department of Science and Technology, Ministry of Science and Technology, New Delhi, India.
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3
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Zhao M, Wang T, Gleber-Netto FO, Chen Z, McGrail DJ, Gomez JA, Ju W, Gadhikar MA, Ma W, Shen L, Wang Q, Tang X, Pathak S, Raso MG, Burks JK, Lin SY, Wang J, Multani AS, Pickering CR, Chen J, Myers JN, Zhou G. Mutant p53 gains oncogenic functions through a chromosomal instability-induced cytosolic DNA response. Nat Commun 2024; 15:180. [PMID: 38167338 PMCID: PMC10761733 DOI: 10.1038/s41467-023-44239-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Accepted: 12/05/2023] [Indexed: 01/05/2024] Open
Abstract
Inactivating TP53 mutations leads to a loss of function of p53, but can also often result in oncogenic gain-of-function (GOF) of mutant p53 (mutp53) proteins which promotes tumor development and progression. The GOF activities of TP53 mutations are well documented, but the mechanisms involved remain poorly understood. Here, we study the mutp53 interactome and find that by targeting minichromosome maintenance complex components (MCMs), GOF mutp53 predisposes cells to replication stress and chromosomal instability (CIN), leading to a tumor cell-autonomous and cyclic GMP-AMP synthase (cGAS)-stimulator of interferon genes (STING)-dependent cytosolic DNA response that activates downstream non-canonical nuclear factor kappa light chain enhancer of activated B cell (NC-NF-κB) signaling. Consequently, GOF mutp53-MCMs-CIN-cytosolic DNA-cGAS-STING-NC-NF-κB signaling promotes tumor cell metastasis and an immunosuppressive tumor microenvironment through antagonizing interferon signaling and regulating genes associated with pro-tumorigenic inflammation. Our findings have important implications for understanding not only the GOF activities of TP53 mutations but also the genome-guardian role of p53 and its inactivation during tumor development and progression.
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Affiliation(s)
- Mei Zhao
- Department of Head and Neck Surgery, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Tianxiao Wang
- Department of Head and Neck Surgery, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
- Department of Head and Neck Surgery, Key Laboratory of Carcinogenesis and Translational Research, Peking University Cancer Hospital & Institute, 100142, Beijing, China
| | - Frederico O Gleber-Netto
- Department of Head and Neck Surgery, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Zhen Chen
- Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Daniel J McGrail
- Department of Systems Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
- Center for Immunotherapy and Precision Immuno-Oncology, Cleveland Clinic, Cleveland, OH, 44195, USA
- Lerner Research Institute, Cleveland Clinic, Cleveland, OH, 44195, USA
| | - Javier A Gomez
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Wutong Ju
- Department of Head and Neck Surgery, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Mayur A Gadhikar
- Department of Head and Neck Surgery, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Wencai Ma
- Department of Bioinformatics and Computational Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Li Shen
- Department of Bioinformatics and Computational Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Qi Wang
- Department of Bioinformatics and Computational Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Ximing Tang
- Department of Translational Molecular Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Sen Pathak
- Department of Genetics, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Maria Gabriela Raso
- Department of Translational Molecular Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Jared K Burks
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Shiaw-Yih Lin
- Department of Systems Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Jing Wang
- Department of Bioinformatics and Computational Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Asha S Multani
- Department of Genetics, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Curtis R Pickering
- Department of Head and Neck Surgery, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
- Department of Surgery-Otolaryngology, Yale School of Medicine, New Haven, CT, 06250, USA
| | - Junjie Chen
- Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Jeffrey N Myers
- Department of Head and Neck Surgery, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA.
| | - Ge Zhou
- Department of Head and Neck Surgery, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA.
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4
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Cui X, Hou J, Wang S, Yu J, Cheng S, Yu L, Song FJ, Luo H. Werner helicase mediates the senescence and cell cycle of leukemia cells by regulating DNA repair pathways. Int J Biol Macromol 2024; 255:128305. [PMID: 37992942 DOI: 10.1016/j.ijbiomac.2023.128305] [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: 07/12/2023] [Revised: 10/23/2023] [Accepted: 11/19/2023] [Indexed: 11/24/2023]
Abstract
Leukemia is a type of malignant hematological disease that is generally resistant to chemotherapy and has poor therapeutic outcomes. Werner (WRN) DNA helicase, an important member of the RecQ family of helicases, plays an important role in DNA repair and telomere stability maintenance. WRN gene dysfunction leads to premature aging and predisposes humans to various types of cancers. However, the biological function of WRN in cancer remains unknown. In this study, the expression of this RecQ family helicase was investigated in different types of leukemia cells, and the leukemia cell line K562 with high WRN expression was selected to construct a WRN knockdown cell line. The results showed that WRN knockdown inhibited leukemia occurrence and development by regulating the proliferation, cell cycle, differentiation, and aging of cells and other biological processes. The results of transcriptome sequencing revealed that WRN promoted the sensitivity of leukemia cells to the DNA damage inducer Etoposide by regulating cell cycle-related proteins, such as CDC2, cyclin B1, p16, and p21, as well as key proteins in DNA damage repair pathways, such as p53, RAD50, RAD51, and MER11. Our findings show that WRN helicase is a promising potential target for leukemia treatment, providing new ideas for the development of targeted drugs against leukemia.
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Affiliation(s)
- Xudong Cui
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, PR China; Natural Products Research Center of Guizhou Province, Guiyang 550014, PR China; Department of Infectious Disease, The Fourth Hospital of Harbin Medical University, Harbin 150001, PR China
| | - Jing Hou
- Natural Products Research Center of Guizhou Province, Guiyang 550014, PR China; College of Life Sciences, South-Central University for Nationalities, Wuhan 430074, PR China
| | - Shimei Wang
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, PR China; Natural Products Research Center of Guizhou Province, Guiyang 550014, PR China; Department of Infectious Disease, The Fourth Hospital of Harbin Medical University, Harbin 150001, PR China
| | - Jia Yu
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, PR China; Natural Products Research Center of Guizhou Province, Guiyang 550014, PR China
| | - Sha Cheng
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, PR China; Natural Products Research Center of Guizhou Province, Guiyang 550014, PR China
| | - Lei Yu
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, PR China; Department of Infectious Disease, The Fourth Hospital of Harbin Medical University, Harbin 150001, PR China.
| | - Fa-Jun Song
- College of Life Sciences, South-Central University for Nationalities, Wuhan 430074, PR China.
| | - Heng Luo
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, PR China; Natural Products Research Center of Guizhou Province, Guiyang 550014, PR China.
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5
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Ouyang J, Feng Y, Zhang Y, Liu Y, Li S, Wang J, Tan L, Zou L. Integration of metabolomics and transcriptomics reveals metformin suppresses thyroid cancer progression via inhibiting glycolysis and restraining DNA replication. Biomed Pharmacother 2023; 168:115659. [PMID: 37864896 DOI: 10.1016/j.biopha.2023.115659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 09/26/2023] [Accepted: 10/04/2023] [Indexed: 10/23/2023] Open
Abstract
The anti-tumoral effects of metformin have been widely studied in several types of cancer, including thyroid cancer; however, the underlying molecular mechanisms remain poorly understood. As an oral hypoglycemic drug, metformin facilitates glucose catabolism and disrupts metabolic homeostasis. Metabolic reprogramming, particularly cellular glucose metabolism, is an important characteristic of malignant tumors. This study aimed to explore the therapeutic effects of metformin in thyroid cancer and the underlying metabolic mechanism. In the present study, it was shown that metformin reduced cell viability, invasion, migration, and EMT, and induced apoptosis and cell cycle G1 phase arrest in thyroid cancer. Transcriptome analysis demonstrated that the differentially expressed genes induced by metformin were involved in several signaling pathways including apoptosis singling pathways, TGF-β signaling, and cell cycle regulation in human thyroid cancer cell lines. In addition, the helicase activity of the CDC45-MCM2-7-GINS complex and DNA replication related genes such as RPA2, RAD51, and PCNA were downregulated in metformin-treated thyroid cancer cells. Moreover, metabolomics analysis showed that metformin-induced significant alterations in metabolic pathways such as glutathione metabolism and polyamine synthesis. Integrative analysis of transcriptomes and metabolomics revealed that metformin suppressed glycolysis by downregulating the key glycolytic enzymes LDHA and PKM2 and upregulating IDH1 expression in thyroid cancer. Furthermore, the anti-tumor role of metformin in thyroid cancer in vivo was shown. Together these results show that metformin plays an anti-tumor role by inhibiting glycolysis and restraining DNA replication in thyroid cancer.
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Affiliation(s)
- Jielin Ouyang
- The First Affiliated Hospital of Hunan Normal University (Hunan Provincial People's Hospital), Changsha, Hunan 410005, PR China; Central Laboratory of Hunan Provincial People's Hospital, The First Affiliated Hospital of Hunan Normal University, Changsha, Hunan 410005, PR China; Key Laboratory of Molecular Epidemiology of Hunan Province, Hunan Normal University, Changsha, Hunan 410013, PR China
| | - Yang Feng
- The First Affiliated Hospital of Hunan Normal University (Hunan Provincial People's Hospital), Changsha, Hunan 410005, PR China; Central Laboratory of Hunan Provincial People's Hospital, The First Affiliated Hospital of Hunan Normal University, Changsha, Hunan 410005, PR China; Key Laboratory of Molecular Epidemiology of Hunan Province, Hunan Normal University, Changsha, Hunan 410013, PR China
| | - Yiyuan Zhang
- Central Laboratory of Hunan Provincial People's Hospital, The First Affiliated Hospital of Hunan Normal University, Changsha, Hunan 410005, PR China
| | - Yarong Liu
- The First Affiliated Hospital of Hunan Normal University (Hunan Provincial People's Hospital), Changsha, Hunan 410005, PR China; Central Laboratory of Hunan Provincial People's Hospital, The First Affiliated Hospital of Hunan Normal University, Changsha, Hunan 410005, PR China; Key Laboratory of Molecular Epidemiology of Hunan Province, Hunan Normal University, Changsha, Hunan 410013, PR China
| | - Shutong Li
- The First Affiliated Hospital of Hunan Normal University (Hunan Provincial People's Hospital), Changsha, Hunan 410005, PR China; Central Laboratory of Hunan Provincial People's Hospital, The First Affiliated Hospital of Hunan Normal University, Changsha, Hunan 410005, PR China; Key Laboratory of Molecular Epidemiology of Hunan Province, Hunan Normal University, Changsha, Hunan 410013, PR China
| | - Jingjing Wang
- The First Affiliated Hospital of Hunan Normal University (Hunan Provincial People's Hospital), Changsha, Hunan 410005, PR China; Central Laboratory of Hunan Provincial People's Hospital, The First Affiliated Hospital of Hunan Normal University, Changsha, Hunan 410005, PR China
| | - Lihong Tan
- The First Affiliated Hospital of Hunan Normal University (Hunan Provincial People's Hospital), Changsha, Hunan 410005, PR China; Central Laboratory of Hunan Provincial People's Hospital, The First Affiliated Hospital of Hunan Normal University, Changsha, Hunan 410005, PR China.
| | - Lianhong Zou
- The First Affiliated Hospital of Hunan Normal University (Hunan Provincial People's Hospital), Changsha, Hunan 410005, PR China; Central Laboratory of Hunan Provincial People's Hospital, The First Affiliated Hospital of Hunan Normal University, Changsha, Hunan 410005, PR China.
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6
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Wu T, Liao L, Wu T, Chen S, Yi Q, Xu M. IGF2BP2 promotes glycolysis and hepatocellular carcinoma stemness by stabilizing CDC45 mRNA via m6A modification. Cell Cycle 2023; 22:2245-2263. [PMID: 37985379 PMCID: PMC10730143 DOI: 10.1080/15384101.2023.2283328] [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: 05/25/2023] [Accepted: 10/09/2023] [Indexed: 11/22/2023] Open
Abstract
A growing number of studies have shown the prognostic importance of Cell division cycle protein 45 (CDC45) in hepatocellular carcinoma (HCC). This study aims to investigate the biological function and mechanism of CDC45 in HCC. The differential expression and prognostic significance of CDC45 in HCC and normal tissues were analyzed by bioinformatics. CDC45 was knocked down and the biological effects of CDC45 in HCC in vitro and in vivo were measured. Subsequently, using RNA m6A colorimetry and Methylated RNA Immunoprecipitation (MeRIP), the levels of m6A modification of total RNA and CDC45 were evaluated in cells. RIP was applied to establish that CDC45 and insulin-like growth factor 2 mRNA-binding protein 2 (IGF2BP2) interact. A test using actinomycin D was performed to gauge the stability of the CDC45 mRNA. Furthermore, the regulatory role of IGF2BP2 on CDC45 expression in HCC progression was explored by overexpressing IGF2BP2. High expression of CDC45 was correlated with poor prognosis in HCC patients. Knocking down CDC45 inhibited HCC cell proliferation, migration, invasion, EMT, stemness, and glycolysis, and promoted apoptosis, which was verified through in vitro experiments. Additionally, IGF2BP2 was highly expressed in HCC cells, and it was found to interact with CDC45. Knocking down IGF2BP2 resulted in reduced stability of CDC45 mRNA. Moreover, overexpression of IGF2BP2 promoted HCC cell proliferation, migration, invasion, EMT, stemness, and glycolysis, while inhibiting apoptosis, which was reversed by knocking down CDC45. In general, IGF2BP2 promoted HCC glycolysis and stemness by stabilizing CDC45 mRNA via m6A modification. [Figure: see text].
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Affiliation(s)
- Tao Wu
- Department of Hepatobiliary Surgery, Yueyang Central Hospital, Yueyang, China
- Department of Urology Surgery, Yueyang Central Hospital, Yueyang, China
| | - Li Liao
- Department of Hepatobiliary Surgery, Yueyang Central Hospital, Yueyang, China
| | - Tao Wu
- Department of Urology Surgery, Yueyang Central Hospital, Yueyang, China
| | - Shuai Chen
- Department of Urology Surgery, Yueyang Central Hospital, Yueyang, China
| | - Qilin Yi
- Department of Hepatobiliary Surgery, Yueyang Central Hospital, Yueyang, China
| | - Min Xu
- Department of Hepatobiliary Surgery, Yueyang Central Hospital, Yueyang, China
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7
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Zhang T, Qiu L, Cao J, Li Q, Zhang L, An G, Ni J, Jia H, Li S, Li K. ZFP36 loss-mediated BARX1 stabilization promotes malignant phenotypes by transactivating master oncogenes in NSCLC. Cell Death Dis 2023; 14:527. [PMID: 37587140 PMCID: PMC10432398 DOI: 10.1038/s41419-023-06044-z] [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: 07/27/2022] [Revised: 07/27/2023] [Accepted: 08/07/2023] [Indexed: 08/18/2023]
Abstract
Non-small cell lung cancer (NSCLC) is the most common type of lung cancer, with high morbidity and mortality worldwide. Although the dysregulation of BARX1 expression has been shown to be associated with malignant cancers, including NSCLC, the underlying mechanism remains elusive. In this study, we identified BARX1 as a common differentially expressed gene in lung squamous cell carcinoma and adenocarcinoma. Importantly, we uncovered a novel mechanism behind the regulation of BARX1, in which ZFP36 interacted with 3'UTR of BARX1 mRNA to mediate its destabilization. Loss of ZFP36 led to the upregulation of BARX1, which further promoted the proliferation, migration and invasion of NSCLC cells. In addition, the knockdown of BARX1 inhibited tumorigenicity in mouse xenograft. We demonstrated that BARX1 promoted the malignant phenotypes by transactivating a set of master oncogenes involved in the cell cycle, DNA synthesis and metastasis. Overall, our study provides insights into the mechanism of BARX1 actions in NSCLC and aids a better understanding of NSCLC pathogenesis.
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Affiliation(s)
- Tongjia Zhang
- Department of Biochemistry and Biophysics, Beijing Key Laboratory of Protein Posttranslational Modifications and Cell Function, School of Basic Medical Sciences, Peking University Health Science Center, 100191, Beijing, China
| | - Lizhen Qiu
- Department of Biochemistry and Biophysics, Beijing Key Laboratory of Protein Posttranslational Modifications and Cell Function, School of Basic Medical Sciences, Peking University Health Science Center, 100191, Beijing, China
| | - Jiashun Cao
- Department of Thoracic Surgery, Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, 102218, Beijing, China
| | - Qiu Li
- Department of Research, Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, 102218, Beijing, China
| | - Lifan Zhang
- Department of Biochemistry and Biophysics, Beijing Key Laboratory of Protein Posttranslational Modifications and Cell Function, School of Basic Medical Sciences, Peking University Health Science Center, 100191, Beijing, China
| | - Guoshun An
- Department of Biochemistry and Biophysics, Beijing Key Laboratory of Protein Posttranslational Modifications and Cell Function, School of Basic Medical Sciences, Peking University Health Science Center, 100191, Beijing, China
| | - Juhua Ni
- Department of Biochemistry and Biophysics, Beijing Key Laboratory of Protein Posttranslational Modifications and Cell Function, School of Basic Medical Sciences, Peking University Health Science Center, 100191, Beijing, China
| | - Hongti Jia
- Department of Biochemistry and Biophysics, Beijing Key Laboratory of Protein Posttranslational Modifications and Cell Function, School of Basic Medical Sciences, Peking University Health Science Center, 100191, Beijing, China
| | - Shuyan Li
- Department of Biochemistry and Biophysics, Beijing Key Laboratory of Protein Posttranslational Modifications and Cell Function, School of Basic Medical Sciences, Peking University Health Science Center, 100191, Beijing, China.
| | - Kailong Li
- Department of Biochemistry and Biophysics, Beijing Key Laboratory of Protein Posttranslational Modifications and Cell Function, School of Basic Medical Sciences, Peking University Health Science Center, 100191, Beijing, China.
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8
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Guilz NC, Ahn YO, Seo S, Mace EM. Unwinding the Role of the CMG Helicase in Inborn Errors of Immunity. J Clin Immunol 2023; 43:847-861. [PMID: 36809597 PMCID: PMC10789183 DOI: 10.1007/s10875-023-01437-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 01/20/2023] [Indexed: 02/23/2023]
Abstract
Inborn errors of immunity (IEI) are a collection of diseases resulting from genetic causes that impact the immune system through multiple mechanisms. Natural killer cell deficiency (NKD) is one such IEI where natural killer (NK) cells are the main immune lineage affected. Though rare, the deficiency of several genes has been described as underlying causes of NKD, including MCM4, GINS1, MCM10 , and GINS4 , all of which are involved in the eukaryotic CMG helicase. The CMG helicase is made up of C DC45 – M CM – G INS and accessory proteins including MCM10. The CMG helicase plays a critical role in DNA replication by unwinding the double helix and enabling access of polymerases to single-stranded DNA, and thus helicase proteins are active in any proliferating cell. Replication stress, DNA damage, and cell cycle arrest are among the cellular phenotypes attributed to loss of function variants in CMG helicase proteins. Despite the ubiquitous function of the CMG helicase, NK cells have an apparent susceptibility to the deficiency of helicase proteins. This review will examine the role of the CMG helicase in inborn errors of immunity through the lens of NKD and further discuss why natural killer cells can be so strongly affected by helicase deficiency.
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Affiliation(s)
- Nicole C Guilz
- Vagelos College of Physicians and Surgeons, Department of Pediatrics, Columbia University Irving Medical Center, 630 W 168th St., New York, NY, 10032, USA
| | - Yong-Oon Ahn
- Vagelos College of Physicians and Surgeons, Department of Pediatrics, Columbia University Irving Medical Center, 630 W 168th St., New York, NY, 10032, USA
| | - Seungmae Seo
- Vagelos College of Physicians and Surgeons, Department of Pediatrics, Columbia University Irving Medical Center, 630 W 168th St., New York, NY, 10032, USA
| | - Emily M Mace
- Vagelos College of Physicians and Surgeons, Department of Pediatrics, Columbia University Irving Medical Center, 630 W 168th St., New York, NY, 10032, USA.
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9
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Radford HM, Toft CJ, Sorenson AE, Schaeffer PM. Inhibition of Replication Fork Formation and Progression: Targeting the Replication Initiation and Primosomal Proteins. Int J Mol Sci 2023; 24:ijms24108802. [PMID: 37240152 DOI: 10.3390/ijms24108802] [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: 03/31/2023] [Revised: 05/02/2023] [Accepted: 05/09/2023] [Indexed: 05/28/2023] Open
Abstract
Over 1.2 million deaths are attributed to multi-drug-resistant (MDR) bacteria each year. Persistence of MDR bacteria is primarily due to the molecular mechanisms that permit fast replication and rapid evolution. As many pathogens continue to build resistance genes, current antibiotic treatments are being rendered useless and the pool of reliable treatments for many MDR-associated diseases is thus shrinking at an alarming rate. In the development of novel antibiotics, DNA replication is still a largely underexplored target. This review summarises critical literature and synthesises our current understanding of DNA replication initiation in bacteria with a particular focus on the utility and applicability of essential initiation proteins as emerging drug targets. A critical evaluation of the specific methods available to examine and screen the most promising replication initiation proteins is provided.
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Affiliation(s)
- Holly M Radford
- Molecular and Cell Biology, College of Public Health, Medical and Veterinary Sciences, James Cook University, Douglas, QLD 4811, Australia
| | - Casey J Toft
- Molecular and Cell Biology, College of Public Health, Medical and Veterinary Sciences, James Cook University, Douglas, QLD 4811, Australia
| | - Alanna E Sorenson
- Molecular and Cell Biology, College of Public Health, Medical and Veterinary Sciences, James Cook University, Douglas, QLD 4811, Australia
| | - Patrick M Schaeffer
- Molecular and Cell Biology, College of Public Health, Medical and Veterinary Sciences, James Cook University, Douglas, QLD 4811, Australia
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10
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Chen L, Cai Q, Yang R, Wang H, Ling H, Li T, Liu N, Wang Z, Sun J, Tao T, Shi Y, Cao Y, Wang X, Xiao D, Liu S, Tao Y. GINS4 suppresses ferroptosis by antagonizing p53 acetylation with Snail. Proc Natl Acad Sci U S A 2023; 120:e2219585120. [PMID: 37018198 PMCID: PMC10104543 DOI: 10.1073/pnas.2219585120] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Accepted: 02/23/2023] [Indexed: 04/06/2023] Open
Abstract
Ferroptosis is an iron-dependent oxidative, nonapoptotic form of regulated cell death caused by the destruction of redox homeostasis. Recent studies have uncovered complex cellular networks that regulate ferroptosis. GINS4 is a promoter of eukaryotic G1/S-cell cycle as a regulator of initiation and elongation of DNA replication, but little is known about its impact on ferroptosis. Here, we found that GINS4 was involved in the regulation of ferroptosis in lung adenocarcinoma (LUAD). CRISPR/Cas9-mediated GINS4 KO facilitated ferroptosis. Interestingly, depletion of GINS4 could effectively induce G1, G1/S, S, and G2/M cells to ferroptosis, especially for G2/M cells. Mechanistically, GINS4 suppressed p53 stability through activating Snail that antagonized the acetylation of p53, and p53 lysine residue 351 (K351 for human p53) was the key site for GINS4-suppressed p53-mediated ferroptosis. Together, our data demonstrate that GINS4 is a potential oncogene in LUAD that functions to destabilize p53 and then inhibits ferroptosis, providing a potential therapeutic target for LUAD.
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Affiliation(s)
- Ling Chen
- Hunan Key Laboratory of Cancer Metabolism, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha Hunan410031, China
- Department of Pathology, Xiangya Hospital, Central South University, Changsha Hunan410008, China
- Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, National Health Commission Key Laboratory of Carcinogenesis, Cancer Research Institute, Central South University, Changsha Hunan410078, China
| | - Qidong Cai
- Department of Thoracic Surgery, Hunan Key Laboratory of Early Diagnosis and Precision Therapy in Lung Cancer, Second Xiangya Hospital, Central South University, Changsha Hunan410011, China
| | - Rui Yang
- Hunan Key Laboratory of Cancer Metabolism, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha Hunan410031, China
- Department of Pathology, Xiangya Hospital, Central South University, Changsha Hunan410008, China
- Department of Pathology, School of Basic Medicine, Central South University, Changsha Hunan410013, China
| | - Haiyan Wang
- Hunan Key Laboratory of Cancer Metabolism, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha Hunan410031, China
- Department of Pathology, Xiangya Hospital, Central South University, Changsha Hunan410008, China
- Department of Pathology, School of Basic Medicine, Central South University, Changsha Hunan410013, China
| | - Huli Ling
- Hunan Key Laboratory of Cancer Metabolism, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha Hunan410031, China
- Department of Pathology, Xiangya Hospital, Central South University, Changsha Hunan410008, China
- Department of Pathology, School of Basic Medicine, Central South University, Changsha Hunan410013, China
| | - Tiansheng Li
- Hunan Key Laboratory of Cancer Metabolism, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha Hunan410031, China
- Department of Pathology, Xiangya Hospital, Central South University, Changsha Hunan410008, China
- Department of Pathology, School of Basic Medicine, Central South University, Changsha Hunan410013, China
| | - Na Liu
- Hunan International Scientific and Technological Cooperation Base of Brain Tumor Research, Xiangya Hospital, Central South University, Changsha Hunan410008, China
- Postdoctoral Research Workstation, Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha Hunan410008, China
| | - Zuli Wang
- Hunan Key Laboratory of Cancer Metabolism, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha Hunan410031, China
- Department of Pathology, Xiangya Hospital, Central South University, Changsha Hunan410008, China
- Department of Pathology, School of Basic Medicine, Central South University, Changsha Hunan410013, China
| | - Jingyue Sun
- Hunan Key Laboratory of Cancer Metabolism, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha Hunan410031, China
- Department of Pathology, Xiangya Hospital, Central South University, Changsha Hunan410008, China
- Department of Pathology, School of Basic Medicine, Central South University, Changsha Hunan410013, China
| | - Tania Tao
- Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, National Health Commission Key Laboratory of Carcinogenesis, Cancer Research Institute, Central South University, Changsha Hunan410078, China
| | - Ying Shi
- Hunan Key Laboratory of Cancer Metabolism, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha Hunan410031, China
- Department of Pathology, Xiangya Hospital, Central South University, Changsha Hunan410008, China
- Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, National Health Commission Key Laboratory of Carcinogenesis, Cancer Research Institute, Central South University, Changsha Hunan410078, China
| | - Ya Cao
- Hunan Key Laboratory of Cancer Metabolism, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha Hunan410031, China
- Department of Pathology, Xiangya Hospital, Central South University, Changsha Hunan410008, China
- Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, National Health Commission Key Laboratory of Carcinogenesis, Cancer Research Institute, Central South University, Changsha Hunan410078, China
| | - Xiang Wang
- Department of Thoracic Surgery, Hunan Key Laboratory of Early Diagnosis and Precision Therapy in Lung Cancer, Second Xiangya Hospital, Central South University, Changsha Hunan410011, China
| | - Desheng Xiao
- Department of Pathology, Xiangya Hospital, Central South University, Changsha Hunan410008, China
- Department of Pathology, School of Basic Medicine, Central South University, Changsha Hunan410013, China
| | - Shuang Liu
- Department of Oncology, Institute of Medical Sciences, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha Hunan410008, China
| | - Yongguang Tao
- Hunan Key Laboratory of Cancer Metabolism, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha Hunan410031, China
- Department of Pathology, Xiangya Hospital, Central South University, Changsha Hunan410008, China
- Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, National Health Commission Key Laboratory of Carcinogenesis, Cancer Research Institute, Central South University, Changsha Hunan410078, China
- Department of Thoracic Surgery, Hunan Key Laboratory of Early Diagnosis and Precision Therapy in Lung Cancer, Second Xiangya Hospital, Central South University, Changsha Hunan410011, China
- Department of Pathology, School of Basic Medicine, Central South University, Changsha Hunan410013, China
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Ahmed SMQ, Laha S, Das R, Ifthikar MA, Das SP. MCM10 expression is linked to cervical cancer aggressiveness. FRONTIERS IN MOLECULAR MEDICINE 2023; 3:1009903. [PMID: 39086679 PMCID: PMC11285692 DOI: 10.3389/fmmed.2023.1009903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Accepted: 02/03/2023] [Indexed: 08/02/2024]
Abstract
Cervical cancer screening is a challenge mainly in developing countries. In developed countries, both incidence and mortality rates have been decreasing due to well organized screening programs. One of the potential biomarkers being exploited are the minichromosome maintenance proteins (MCMs), which show both specificity and sensitivity. MCM2-7 are involved in DNA replication initiation and elongation, and the MCM subunits are highly expressed in malignant tissues. Unlike other MCMs, MCM10, which is not part of the core helicase complex, is a critical determinant of origin activation and its levels are limiting in cancer cells. In this study, we performed bioinformatic analysis on the expression profile of all DNA replication associated MCM proteins in cervical cancer. MCM10 showed a relatively higher expression profile compared to the other MCMs. The mRNA expression levels of the MCMs were significantly increased in tumour tissues compared to normal, and MCM10 showed a fold change of 3.4. In order to understand if MCM10 is associated with the aggressiveness of cervical cancer, we looked into the mRNA expression pattern of MCM10 in three cervical cancer cell lines and one normal cervical cell line. MCM10 expression was significantly higher in the case of the more aggressive cancer cell line HeLa compared to controls. MCM10, therefore, can serve as a prominent biomarker for cancer progression and thus aid in early detection to control the spread of cancer cells. Our results show that MCM10 expression levels in cervical cancer cell lines are associated with cancer aggressiveness, demonstrating its clinical significance.
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Affiliation(s)
| | - Suparna Laha
- Yenepoya Research Centre, Yenepoya (Deemed to be University), Mangalore, India
| | - Ranajit Das
- Yenepoya Research Centre, Yenepoya (Deemed to be University), Mangalore, India
| | - Mariam Anjum Ifthikar
- Department of Oncology, Yenepoya Medical College Hospital, Yenepoya (Deemed to be University), Mangalore, India
| | - Shankar Prasad Das
- Yenepoya Research Centre, Yenepoya (Deemed to be University), Mangalore, India
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The CMG helicase and cancer: a tumor "engine" and weakness with missing mutations. Oncogene 2023; 42:473-490. [PMID: 36522488 PMCID: PMC9948756 DOI: 10.1038/s41388-022-02572-8] [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: 08/05/2022] [Revised: 12/01/2022] [Accepted: 12/07/2022] [Indexed: 12/23/2022]
Abstract
The replicative Cdc45-MCM-GINS (CMG) helicase is a large protein complex that functions in the DNA melting and unwinding steps as a component of replisomes during DNA replication in mammalian cells. Although the CMG performs this important role in cell growth, the CMG is not a simple bystander in cell cycle events. Components of the CMG, specifically the MCM precursors, are also involved in maintaining genomic stability by regulating DNA replication fork speeds, facilitating recovery from replicative stresses, and preventing consequential DNA damage. Given these important functions, MCM/CMG complexes are highly regulated by growth factors such as TGF-ß1 and by signaling factors such as Myc, Cyclin E, and the retinoblastoma protein. Mismanagement of MCM/CMG complexes when these signaling mediators are deregulated, and in the absence of the tumor suppressor protein p53, leads to increased genomic instability and is a contributor to tumorigenic transformation and tumor heterogeneity. The goal of this review is to provide insight into the mechanisms and dynamics by which the CMG is regulated during its assembly and activation in mammalian genomes, and how errors in CMG regulation due to oncogenic changes promote tumorigenesis. Finally, and most importantly, we highlight the emerging understanding of the CMG helicase as an exploitable vulnerability and novel target for therapeutic intervention in cancer.
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Li H, Zhou Q, Wu Z, Lu X. Identification of novel key genes associated with uterine corpus endometrial carcinoma progression and prognosis. ANNALS OF TRANSLATIONAL MEDICINE 2023; 11:100. [PMID: 36819577 PMCID: PMC9929804 DOI: 10.21037/atm-22-6461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Accepted: 01/10/2023] [Indexed: 01/18/2023]
Abstract
Background Uterine corpus endometrial carcinoma (UCEC) is a common malignant cancer type which affects the health of women worldwide. However, its molecular mechanism has not been elucidated. Methods To identify the hub modules and genes in UCEC associated with clinical phenotypes, the RNA sequencing data and clinical data of 543 UCEC samples were obtained from The Cancer Genome Atlas (TCGA) database and then subjected to weighted gene co-expression network analysis (WGCNA). To explore the potential biological function of the hub modules, Gene Ontology (GO) annotation and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analyses were conducted. Genes differentially expressed in UCEC were screened according to TCGA data using the "gdcDEAnalysis" package in R (The R Foundation for Statistical Computing). After intersecting with hub genes, the shared genes were used for further survival analyses. The relationship between gene expression level and clinical phenotype was analyzed in the TCGA-UCEC cohort in The University of ALabama at Birmingham CANcer data analysis Portal and the Human Protein Atlas. The microarray data set GSE17025 was also analyzed to validate the gene expression profiles. Results There were 19 coexpression modules generated by WGCNA. Among them, 2 modules with 198 hub genes were highly correlated with clinical features (especially histologic grade and clinical stage). Meanwhile, 4,003 differentially expressed genes (DEGs) were screened out, and 164 DEGs overlapped with hub genes. Survival analyses revealed that high expression of GINS4 and low expression of ESR1 showed a trend of poor prognosis. Further analyses demonstrated that both messenger RNA (mRNA) and protein expression profiles of GINS4 and ESR1 were significantly associated with UCEC development and progression in TCGA and GSE17025 cohorts. Conclusions Based on the integrated bioinformatic analyses, our data indicated that GINS4 and ESR1 might serve as potential prognostic markers and targets for UCEC therapy.
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Affiliation(s)
- Haixia Li
- School of Basic Medical Sciences, Guangxi Medical University, Nanning, China;,College of Stomatology, Hospital of Stomatology, Guangxi Key Laboratory of Nanobody Research/Guangxi Nanobody Engineering Research Center, Guangxi Medical University, Nanning, China;,Department of Oncology, Taihe Hospital, Hubei University of Medicine, Shiyan, China
| | - Quan Zhou
- Department of Traditional Chinese Medicine, Renmin Hospital, Hubei University of Medicine, Shiyan, China
| | - Zhangying Wu
- Department of Obstetrics and Gynecology, The Affiliated Hospital of Guizhou Medical University, Guiyang, China
| | - Xiaoling Lu
- School of Basic Medical Sciences, Guangxi Medical University, Nanning, China;,College of Stomatology, Hospital of Stomatology, Guangxi Key Laboratory of Nanobody Research/Guangxi Nanobody Engineering Research Center, Guangxi Medical University, Nanning, China
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Roy A, Niharika, Chakraborty S, Mishra J, Singh SP, Patra SK. Mechanistic aspects of reversible methylation modifications of arginine and lysine of nuclear histones and their roles in human colon cancer. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2023; 197:261-302. [PMID: 37019596 DOI: 10.1016/bs.pmbts.2023.01.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/08/2023]
Abstract
Developmental proceedings and maintenance of cellular homeostasis are regulated by the precise orchestration of a series of epigenetic events that eventually control gene expression. DNA methylation and post-translational modifications (PTMs) of histones are well-characterized epigenetic events responsible for fine-tuning gene expression. PTMs of histones bear molecular logic of gene expression at chromosomal territory and have become a fascinating field of epigenetics. Nowadays, reversible methylation on histone arginine and lysine is gaining increasing attention as a significant PTM related to reorganizing local nucleosomal structure, chromatin dynamics, and transcriptional regulation. It is now well-accepted and reported that histone marks play crucial roles in colon cancer initiation and progression by encouraging abnormal epigenomic reprogramming. It is becoming increasingly clear that multiple PTM marks at the N-terminal tails of the core histones cross-talk with one another to intricately regulate DNA-templated biological processes such as replication, transcription, recombination, and damage repair in several malignancies, including colon cancer. These functional cross-talks provide an additional layer of message, which spatiotemporally fine-tunes the overall gene expression regulation. Nowadays, it is evident that several PTMs instigate colon cancer development. How colon cancer-specific PTM patterns or codes are generated and how they affect downstream molecular events are uncovered to some extent. Future studies would address more about epigenetic communication, and the relationship between histone modification marks to define cellular functions in depth. This chapter will comprehensively highlight the importance of histone arginine and lysine-based methylation modifications and their functional cross-talk with other histone marks from the perspective of colon cancer development.
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Wu W, Sun J, Dong M, Yang Q, Yang W, Zhang T, Wang L, Song L. CgTNF-2 promotes the proliferation of haemocytes by regulating the expressions of CgRunx and cell cycle related genes in the Pacific oyster Crassostrea gigas. FISH & SHELLFISH IMMUNOLOGY 2023; 132:108478. [PMID: 36509414 DOI: 10.1016/j.fsi.2022.108478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 12/01/2022] [Accepted: 12/05/2022] [Indexed: 06/17/2023]
Abstract
A TNF-α family member, CgTNF-2, was previously identified from the oyster Crassostrea gigas to involve in the antibacterial response. In the present study, the role of CgTNF-2 in mediating the proliferation of haemocytes was further explored. The mRNA expression of CgTNF-2 in granulocytes was significantly higher than that in semi-granulocytes and agranulocytes, and the percentages of CgTNF-2 antibody labeled cells in agranulocytes, semi-granulocytes and granulocytes were 19.15%, 40.25% and 94.07%, respectively. After the treatment with rCgTNF-2, the percentage of EdU+ cells in haemocytes increased significantly (1.77-fold, p < 0.05) at 6 h compared with that in rGST-treated group, and the mRNA expressions of CgRunx, CgCyclin A, CgCDK2 and CgCDC45 in haemocytes all increased significantly (p < 0.05), which were 1.94-fold, 2.13-fold, 1.97-fold, 1.76-fold of that in rGST-treated group, respectively. Meanwhile, the protein abundance of CgRunx and CgCyclin A in the haemocytes of oysters in the rCgTNF-2-treated group increased, and the percentage of PI+ haemocytes in S phase also increased significantly (2.19-fold, p < 0.05) compared with that in rGST-treated group. These results collectively confirmed that CgTNF-2 was highly expressed in granulocytes and involved in the proliferation of haemocytes by regulating the expressions of CgRunx and cell cycle related genes in C. gigas.
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Affiliation(s)
- Wei Wu
- School of Life Science, Liaoning Normal University, Dalian, 116029, China; Liaoning Key Laboratory of Marine Animal Immunology & Disease Control, Dalian Ocean University, Dalian, 116023, China; Liaoning Key Laboratory of Marine Animal Immunology, Dalian Ocean University, Dalian, 116023, China
| | - Jiejie Sun
- Liaoning Key Laboratory of Marine Animal Immunology & Disease Control, Dalian Ocean University, Dalian, 116023, China; Liaoning Key Laboratory of Marine Animal Immunology, Dalian Ocean University, Dalian, 116023, China
| | - Miren Dong
- Liaoning Key Laboratory of Marine Animal Immunology & Disease Control, Dalian Ocean University, Dalian, 116023, China; Liaoning Key Laboratory of Marine Animal Immunology, Dalian Ocean University, Dalian, 116023, China
| | - Qian Yang
- Liaoning Key Laboratory of Marine Animal Immunology & Disease Control, Dalian Ocean University, Dalian, 116023, China; Liaoning Key Laboratory of Marine Animal Immunology, Dalian Ocean University, Dalian, 116023, China
| | - Wenwen Yang
- Liaoning Key Laboratory of Marine Animal Immunology & Disease Control, Dalian Ocean University, Dalian, 116023, China; Liaoning Key Laboratory of Marine Animal Immunology, Dalian Ocean University, Dalian, 116023, China
| | - Tong Zhang
- Liaoning Key Laboratory of Marine Animal Immunology & Disease Control, Dalian Ocean University, Dalian, 116023, China; Liaoning Key Laboratory of Marine Animal Immunology, Dalian Ocean University, Dalian, 116023, China
| | - Lingling Wang
- Liaoning Key Laboratory of Marine Animal Immunology & Disease Control, Dalian Ocean University, Dalian, 116023, China; Southern Laboratory of Ocean Science and Engineering, Guangdong, Zhuhai), Zhuhai, 519000, China; Liaoning Key Laboratory of Marine Animal Immunology, Dalian Ocean University, Dalian, 116023, China; Dalian Key Laboratory of Prevention and Control of Aquatic Animal Diseases, Dalian Ocean University, Dalian, 116023, China
| | - Linsheng Song
- Liaoning Key Laboratory of Marine Animal Immunology & Disease Control, Dalian Ocean University, Dalian, 116023, China; Southern Laboratory of Ocean Science and Engineering, Guangdong, Zhuhai), Zhuhai, 519000, China; Liaoning Key Laboratory of Marine Animal Immunology, Dalian Ocean University, Dalian, 116023, China; Dalian Key Laboratory of Prevention and Control of Aquatic Animal Diseases, Dalian Ocean University, Dalian, 116023, China.
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MCM2 in human cancer: functions, mechanisms, and clinical significance. Mol Med 2022; 28:128. [PMID: 36303105 PMCID: PMC9615236 DOI: 10.1186/s10020-022-00555-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2022] [Accepted: 10/10/2022] [Indexed: 11/18/2022] Open
Abstract
Background Aberrant DNA replication is the main source of genomic instability that leads to tumorigenesis and progression. MCM2, a core subunit of eukaryotic helicase, plays a vital role in DNA replication. The dysfunction of MCM2 results in the occurrence and progression of multiple cancers through impairing DNA replication and cell proliferation. Conclusions MCM2 is a vital regulator in DNA replication. The overexpression of MCM2 was detected in multiple types of cancers, and the dysfunction of MCM2 was correlated with the progression and poor prognoses of malignant tumors. According to the altered expression of MCM2 and its correlation with clinicopathological features of cancer patients, MCM2 was thought to be a sensitive biomarker for cancer diagnosis, prognosis, and chemotherapy response. The anti-tumor effect induced by MCM2 inhibition implies the potential of MCM2 to be a novel therapeutic target for cancer treatment. Since DNA replication stress, which may stimulate anti-tumor immunity, frequently occurs in MCM2 deficient cells, it also proposes the possibility that MCM2 targeting improves the effect of tumor immunotherapy.
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Evaluation of the Synergistic Potential of Simultaneous Pan- or Isoform-Specific BET and SYK Inhibition in B-Cell Lymphoma: An In Vitro Approach. Cancers (Basel) 2022; 14:cancers14194691. [PMID: 36230614 PMCID: PMC9564024 DOI: 10.3390/cancers14194691] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 09/13/2022] [Accepted: 09/21/2022] [Indexed: 11/17/2022] Open
Abstract
Simple Summary B-cell lymphomas represent the majority of non-Hodgkin lymphomas and are the most common lymphoid malignancies in the Western world. Genetic alterations or epigenetic modulations can lead to tumor initiation and tumor progression. Aside from standard care, targeted, individualized therapies can be highly effective. Here, we evaluated the impact of simultaneous specific inhibition of two key regulators involved in B lymphoid tumor progression. Spleen tyrosine kinase (SYK) is a B-cell receptor-associated kinase acting as a proto-oncogene in B-cell malignancies, while bromodomain and extra-terminal domain (BET) proteins are epigenetic reader proteins involved in histone recognition and transcription regulation. The simultaneous inhibition of SYK and BET showed enhanced anti-proliferative effects, as well as inducing a distinct combination-specific gene expression profile, suggesting SYK and BET inhibition as a promising combination in the treatment of B-cell lymphoma. Abstract Background: Both bromodomain and extra-terminal domain (BET) proteins and spleen tyrosine kinase (SYK) represent promising targets in diffuse large B-cell (DLBCL) and Burkitt’s lymphoma (BL). We evaluated the anti-lymphoma activity of the isoform-specific bivalent BET inhibitor AZD5153 (AZD) and the pan-BET inhibitor I-BET151 (I-BET) as single agents and in combination with SYK inhibitor Entospletinib (Ento) in vitro. Methods: The effect of the single agents on cell proliferation and metabolic activity was evaluated in two DLBCL and two BL cell lines. Proliferation, metabolic activity, apoptosis, cell cycle and morphology were further investigated after a combined treatment of AZD or I-BET and Ento. RNAseq profiling of combined AZD+Ento treatment was performed in SU-DHL-4 cells. Results: Both BET inhibitors reduced cell proliferation and metabolic activity in a dose- and time-dependent manner. Combined BET and SYK inhibition enhanced the anti-proliferative effect and induced a G0/G1 cell cycle arrest. SU-DHL-4 demonstrated a pronounced modulation of gene expression by AZD, which was markedly increased by additional SYK inhibition. Functional enrichment analyses identified combination-specific GO terms related to DNA replication and cell division. Genes such as ADGRA2, MYB, TNFRSF11A, S100A10, PLEKHH3, DHRS2 and FOXP1-AS1 were identified as possible key regulators. Conclusion: Simultaneous inhibition of BET and SYK enhanced the anti-proliferative effects, and induced a combination-specific gene expression signature.
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Li Q, Demir S, Del Río-Álvarez Á, Maxwell R, Wagner A, Carrillo-Reixach J, Armengol C, Vokuhl C, Häberle B, von Schweinitz D, Schmid I, Cairo S, Kappler R. Targeting the Unwindosome by Mebendazole Is a Vulnerability of Chemoresistant Hepatoblastoma. Cancers (Basel) 2022; 14:cancers14174196. [PMID: 36077733 PMCID: PMC9454988 DOI: 10.3390/cancers14174196] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 08/23/2022] [Accepted: 08/26/2022] [Indexed: 11/16/2022] Open
Abstract
Resistance to conventional chemotherapy remains a huge challenge in the clinical management of hepatoblastoma, the most common liver tumor in childhood. By integrating the gene expression data of hepatoblastoma patients into the perturbation prediction tool Connectivity Map, we identified the clinical widely used anthelmintic mebendazole as a drug to circumvent chemoresistance in permanent and patient-derived xenograft cell lines that are resistant to cisplatin, the therapeutic backbone of hepatoblastoma treatment. Viability assays clearly indicated a potent reduction of tumor cell growth upon mebendazole treatment in a dose-dependent manner. The combination of mebendazole and cisplatin revealed a strong synergistic effect, which was comparable to the one seen with cisplatin and doxorubicin, the current treatment for high-risk hepatoblastoma patients. Moreover, mebendazole treatment resulted in reduced colony and tumor spheroid formation capabilities, cell cycle arrest, and induction of apoptosis of hepatoblastoma cells. Mechanistically, mebendazole causes blockage of microtubule formation and transcriptional downregulation of genes encoding the unwindosome, which are highly expressed in chemoresistant tumors. Most importantly, mebendazole significantly reduced tumor growth in a subcutaneous xenograft transplantation mouse model without side effects. In conclusion, our results strongly support the clinical use of mebendazole in the treatment of chemoresistant hepatoblastoma and highlight the potential theranostic value of unwindosome-associated genes.
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Affiliation(s)
- Qian Li
- Department of Pediatric Surgery, Dr. von Hauner Children’s Hospital, University Hospital, LMU Munich, 80337 Munich, Germany
| | - Salih Demir
- Department of Pediatric Surgery, Dr. von Hauner Children’s Hospital, University Hospital, LMU Munich, 80337 Munich, Germany
| | - Álvaro Del Río-Álvarez
- Childhood Liver Oncology Group, Health Sciences Research Institute Germans Trias i Pujol IGTP, 08916 Badalona, Spain
| | - Rebecca Maxwell
- Department of Pediatric Surgery, Dr. von Hauner Children’s Hospital, University Hospital, LMU Munich, 80337 Munich, Germany
| | - Alexandra Wagner
- Department of Pediatric Surgery, Dr. von Hauner Children’s Hospital, University Hospital, LMU Munich, 80337 Munich, Germany
| | - Juan Carrillo-Reixach
- Childhood Liver Oncology Group, Health Sciences Research Institute Germans Trias i Pujol IGTP, 08916 Badalona, Spain
- Liver and Digestive Diseases Networking Biomedical Research Centre (CIBEREHD), 28029 Madrid, Spain
| | - Carolina Armengol
- Childhood Liver Oncology Group, Health Sciences Research Institute Germans Trias i Pujol IGTP, 08916 Badalona, Spain
- Liver and Digestive Diseases Networking Biomedical Research Centre (CIBEREHD), 28029 Madrid, Spain
| | - Christian Vokuhl
- Institute of Pathology, University Hospital Bonn, 53127 Bonn, Germany
| | - Beate Häberle
- Department of Pediatric Surgery, Dr. von Hauner Children’s Hospital, University Hospital, LMU Munich, 80337 Munich, Germany
| | - Dietrich von Schweinitz
- Department of Pediatric Surgery, Dr. von Hauner Children’s Hospital, University Hospital, LMU Munich, 80337 Munich, Germany
| | - Irene Schmid
- Department of Pediatrics, Dr. von Hauner Children’s Hospital, University Hospital, LMU Munich, 80337 Munich, Germany
| | | | - Roland Kappler
- Department of Pediatric Surgery, Dr. von Hauner Children’s Hospital, University Hospital, LMU Munich, 80337 Munich, Germany
- Correspondence: ; Tel.: +49-89-4400-57810
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Zhou C, Chen Z, Xiao B, Xiang C, Li A, Zhao Z, Li H. Comprehensive analysis of GINS subunits prognostic value and ceRNA network in sarcoma. Front Cell Dev Biol 2022; 10:951363. [PMID: 36092720 PMCID: PMC9462653 DOI: 10.3389/fcell.2022.951363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Accepted: 07/29/2022] [Indexed: 11/13/2022] Open
Abstract
Background: The GINS complex, composed of GINS1/2/3/4 subunits, is an essential structure of Cdc45-MCM-GINS (CMG) helicase and plays a vital role in establishing the DNA replication fork and chromosome replication. Meanwhile, GINS genes have been associated with the poor prognosis of various malignancies. However, the abnormal expression of GINS genes and their diagnostic and prognostic value in sarcomas (SARC) remain unclear. Methods: Oncomine, Gene Expression Profiling Interactive Analysis (GEPIA), Kaplan-Meier Plotter, Cancer cell line encyclopedia (CCLE), The University of Alabama at Birmingham Cancer Data Analysis Portal (UALCAN), R studio, and Tumor Immune Estimation Resource (TIMER) were used to analyze the expression profiles, prognostic value, biological function, ceRNA, and immune infiltration associated with GINS genes in sarcomas. Results: We found that GINS1/2/3/4 genes exhibited significantly upregulated transcription levels in SARC samples compared to non-tumor tissues and exhibited high expression levels in sarcoma cell lines. In addition, SARC patients with increased expression levels of GINS1/2/3/4 showed poorer survival rates. Immune infiltration analysis showed that GINS subunits were closely associated with the infiltration of immune cells in sarcomas. Conclusion: Our research identified GINS subunits as potential diagnostic and prognostic biological targets in SARC and elucidated their underlying effects in the genesis and progression of SARC. These results may provide new opportunities and research directions for targeted sarcoma therapy.
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Affiliation(s)
- Chuqiao Zhou
- Department of Orthopedics, The Second Xiangya Hospital, Central South University, Changsha, China
- Orthopedic Biomedical Materials Engineering Laboratory of Hunan Province, Changsha, China
| | - Zhuoyuan Chen
- Department of Orthopedics, The Second Xiangya Hospital, Central South University, Changsha, China
- Orthopedic Biomedical Materials Engineering Laboratory of Hunan Province, Changsha, China
| | - Bo Xiao
- Department of Orthopedics, The Second Xiangya Hospital, Central South University, Changsha, China
- Orthopedic Biomedical Materials Engineering Laboratory of Hunan Province, Changsha, China
| | - Cheng Xiang
- Department of Orthopedics, The Second Xiangya Hospital, Central South University, Changsha, China
- Orthopedic Biomedical Materials Engineering Laboratory of Hunan Province, Changsha, China
| | - Aoyu Li
- Department of Orthopedics, The Second Xiangya Hospital, Central South University, Changsha, China
- Orthopedic Biomedical Materials Engineering Laboratory of Hunan Province, Changsha, China
| | - Ziyue Zhao
- Department of Orthopedics, The Second Xiangya Hospital, Central South University, Changsha, China
- Orthopedic Biomedical Materials Engineering Laboratory of Hunan Province, Changsha, China
| | - Hui Li
- Department of Orthopedics, The Second Xiangya Hospital, Central South University, Changsha, China
- Orthopedic Biomedical Materials Engineering Laboratory of Hunan Province, Changsha, China
- *Correspondence: Hui Li,
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20
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Yun HJ, Jeoung DJ, Jin S, Park JH, Lee EW, Lee HT, Choi YH, Kim BW, Kwon HJ. Induction of Cell Cycle Arrest, Apoptosis, and Reducing the Expression of MCM Proteins in Human Lung Carcinoma A549 Cells by Cedrol, Isolated from Juniperus chinensis. J Microbiol Biotechnol 2022; 32:918-926. [PMID: 35880481 PMCID: PMC9628924 DOI: 10.4014/jmb.2205.05012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 06/22/2022] [Accepted: 06/29/2022] [Indexed: 12/15/2022]
Abstract
Proteins related to DNA replication have been proposed as cancer biomarkers and targets for anticancer agents. Among them, minichromosome maintenance (MCM) proteins, often overexpressed in various cancer cells, are recognized both as notable biomarkers for cancer diagnosis and as targets for cancer treatment. Here, we investigated the activity of cedrol, a single compound isolated from Juniperus chinensis, in reducing the expression of MCM proteins in human lung carcinoma A549 cells. Remarkably, cedrol also strongly inhibited the expression of all other MCM protein family members in A549 cells. Moreover, cedrol treatment reduced cell viability in A549 cells, accompanied by cell cycle arrest at the G1 phase, and enhanced apoptosis. Taken together, this study broadens our understanding of how cedrol executes its anticancer activity while demonstrating that cedrol has potential application in the treatment of human lung cancer as an inhibitor of MCM proteins.
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Affiliation(s)
- Hee Jung Yun
- Biopharmaceutical Engineering Major, Division of Applied Bioengineering, College of Engineering, Dong-eui University, Busan 47340, Republic of Korea,Department of Biopharmaceutics, Dong-eui University Graduate School, Busan 47340, Republic of Korea
| | - Da Jeoung Jeoung
- Department of Biopharmaceutics, Dong-eui University Graduate School, Busan 47340, Republic of Korea
| | - Soojung Jin
- Core-Facility Center for Tissue Regeneration, Dong-eui University, Busan 47340, Republic of Korea
| | - Jung-ha Park
- Biopharmaceutical Engineering Major, Division of Applied Bioengineering, College of Engineering, Dong-eui University, Busan 47340, Republic of Korea,Department of Biopharmaceutics, Dong-eui University Graduate School, Busan 47340, Republic of Korea,Core-Facility Center for Tissue Regeneration, Dong-eui University, Busan 47340, Republic of Korea
| | - Eun-Woo Lee
- Biopharmaceutical Engineering Major, Division of Applied Bioengineering, College of Engineering, Dong-eui University, Busan 47340, Republic of Korea,Department of Biopharmaceutics, Dong-eui University Graduate School, Busan 47340, Republic of Korea,Core-Facility Center for Tissue Regeneration, Dong-eui University, Busan 47340, Republic of Korea
| | - Hyun-Tai Lee
- Biopharmaceutical Engineering Major, Division of Applied Bioengineering, College of Engineering, Dong-eui University, Busan 47340, Republic of Korea,Department of Biopharmaceutics, Dong-eui University Graduate School, Busan 47340, Republic of Korea,Core-Facility Center for Tissue Regeneration, Dong-eui University, Busan 47340, Republic of Korea
| | - Yung Hyun Choi
- Core-Facility Center for Tissue Regeneration, Dong-eui University, Busan 47340, Republic of Korea,Department of Biochemistry, College of Korean Medicine, Dong-eui University, Busan 47227, Republic of Korea
| | - Byung Woo Kim
- Biopharmaceutical Engineering Major, Division of Applied Bioengineering, College of Engineering, Dong-eui University, Busan 47340, Republic of Korea,Department of Biopharmaceutics, Dong-eui University Graduate School, Busan 47340, Republic of Korea,Blue-Bio Industry Regional Innovation Center, Dong-eui University, Busan 47340, Republic of Korea,Corresponding authors B.W. Kim Phone: +82-51-890-2900 E-mail:
| | - Hyun Ju Kwon
- Biopharmaceutical Engineering Major, Division of Applied Bioengineering, College of Engineering, Dong-eui University, Busan 47340, Republic of Korea,Department of Biopharmaceutics, Dong-eui University Graduate School, Busan 47340, Republic of Korea,Core-Facility Center for Tissue Regeneration, Dong-eui University, Busan 47340, Republic of Korea,
H.J. Kwon Phone: +82-51-890-1519 Fax: +82-505-182-6871 E-mail:
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21
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Sanders J, Castiglione M, Shun T, Vollmer LL, Schurdak ME, Vogt A, Schwacha A. Validation of a high throughput screening assay to identify small molecules that target the eukaryotic replicative helicase. SLAS DISCOVERY : ADVANCING LIFE SCIENCES R & D 2022; 27:229-241. [PMID: 35058181 PMCID: PMC9196137 DOI: 10.1016/j.slasd.2021.12.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Mcm2-7 is the catalytic core of the eukaryotic replicative helicase, which together with CDC45 and the GINS complex unwind parental DNA to generate templates for DNA polymerase. Being a highly regulated and complex enzyme that operates via an incompletely understood multi-step mechanism, molecular probes of Mcm2-7 that interrogate specific mechanistic steps would be useful tools for research and potential future chemotherapy. Based upon a synthetic lethal approach, we previously developed a budding yeast multivariate cell-based high throughput screening (HTS) assay to identify putative Mcm inhibitors by their ability to specifically cause a growth defect in an mcm mutant relative to a wild-type strain[1]. Here, as proof of concept, we used this assay to screen a 1280-member compound library (LOPAC) for potential Mcm2-7 inhibitors. Primary screening and dose-dependent retesting identified twelve compounds from this library that specifically inhibited the growth of the Mcm mutant relative to the corresponding wild-type strain (0.9 % hit rate). Secondary assays were employed to rule out non-specific DNA damaging agents, establish direct protein-ligand interaction via biophysical methods, and verify in vivo DNA replication inhibition via fluorescence activated cell sorter analysis (FACS). We identified one agent (β-carboline-3-carboxylic acid N-methylamide, CMA) that physically bound to the purified Mcm2-7 complex (Kdapp119 µM), and at slightly higher concentrations specifically blocked S-phase cell cycle progression of the wild-type strain. In total, identification of Mcm2-7 as a CMA target validates our synthetic lethal HTS assay paradigm as a tool to identify chemical probes for the Mcm2-7 replicative helicase.
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Affiliation(s)
- Jordan Sanders
- The Department of Biological Sciences, University of Pittsburgh, Pittsburgh PA 15260
| | - Michael Castiglione
- Drug Discovery Institute, University of Pittsburgh Medical School, Pittsburgh PA 15260
| | - Tongying Shun
- Drug Discovery Institute, University of Pittsburgh Medical School, Pittsburgh PA 15260
| | - Laura L Vollmer
- Drug Discovery Institute, University of Pittsburgh Medical School, Pittsburgh PA 15260
| | - Mark E Schurdak
- Drug Discovery Institute, University of Pittsburgh Medical School, Pittsburgh PA 15260; Department of Computational and Systems Biology, University of Pittsburgh, Pittsburgh PA 15260
| | - Andreas Vogt
- Drug Discovery Institute, University of Pittsburgh Medical School, Pittsburgh PA 15260; Department of Computational and Systems Biology, University of Pittsburgh, Pittsburgh PA 15260.
| | - Anthony Schwacha
- The Department of Biological Sciences, University of Pittsburgh, Pittsburgh PA 15260.
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22
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Schaefer‐Ramadan S, Aleksic J, Al‐Thani NM, Malek JA. Novel protein contact points among TP53 and minichromosome maintenance complex proteins 2, 3, and 5. Cancer Med 2022; 11:4989-5000. [PMID: 35567389 PMCID: PMC9761056 DOI: 10.1002/cam4.4805] [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: 10/17/2021] [Revised: 04/11/2022] [Accepted: 04/26/2022] [Indexed: 02/03/2023] Open
Abstract
OBJECTIVE Identify protein contact points between TP53 and minichromosome maintenance (MCM) complex proteins 2, 3, and 5 with high resolution allowing for potential novel Cancer drug design. METHODS A next-generation sequencing-based protein-protein interaction method developed in our laboratory called AVA-Seq was applied to a gold-standard human protein interaction set. Proteins including TP53, MCM2, MCM3, MCM5, HSP90AA1, PCNA, NOD1, and others were sheared and ligated into the AVA-Seq system. Protein-protein interactions were then identified in both mild and stringent selective conditions. RESULTS Known interactions among MCM2, MCM3, and MCM5 were identified with the AVA-Seq system. The interacting regions detected between these three proteins overlap with the structural data of the MCM complex, and novel domains were identified with high resolution determined by multiple overlapping fragments. Fragments of wild type TP53 were shown to interact with MCM2, MCM3, and MCM5, and details on the location of the interactions were provided. Finally, a mini-network of known and novel cancer protein interactions was provided, which could have implications for fundamental changes in multiple cancers. CONCLUSION We provide a high-resolution mini-interactome that could direct novel drug targets and implicate possible effects of specific cancer mutations.
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Affiliation(s)
| | - Jovana Aleksic
- Department of Genetic MedicineWeill Cornell Medicine in QatarDohaQatar
| | - Nayra M. Al‐Thani
- Department of Genetic MedicineWeill Cornell Medicine in QatarDohaQatar
| | - Joel A. Malek
- Department of Genetic MedicineWeill Cornell Medicine in QatarDohaQatar
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23
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Kelm JM, Samarbakhsh A, Pillai A, VanderVere-Carozza PS, Aruri H, Pandey DS, Pawelczak KS, Turchi JJ, Gavande NS. Recent Advances in the Development of Non-PIKKs Targeting Small Molecule Inhibitors of DNA Double-Strand Break Repair. Front Oncol 2022; 12:850883. [PMID: 35463312 PMCID: PMC9020266 DOI: 10.3389/fonc.2022.850883] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2022] [Accepted: 02/22/2022] [Indexed: 01/09/2023] Open
Abstract
The vast majority of cancer patients receive DNA-damaging drugs or ionizing radiation (IR) during their course of treatment, yet the efficacy of these therapies is tempered by DNA repair and DNA damage response (DDR) pathways. Aberrations in DNA repair and the DDR are observed in many cancer subtypes and can promote de novo carcinogenesis, genomic instability, and ensuing resistance to current cancer therapy. Additionally, stalled or collapsed DNA replication forks present a unique challenge to the double-strand DNA break (DSB) repair system. Of the various inducible DNA lesions, DSBs are the most lethal and thus desirable in the setting of cancer treatment. In mammalian cells, DSBs are typically repaired by the error prone non-homologous end joining pathway (NHEJ) or the high-fidelity homology directed repair (HDR) pathway. Targeting DSB repair pathways using small molecular inhibitors offers a promising mechanism to synergize DNA-damaging drugs and IR while selective inhibition of the NHEJ pathway can induce synthetic lethality in HDR-deficient cancer subtypes. Selective inhibitors of the NHEJ pathway and alternative DSB-repair pathways may also see future use in precision genome editing to direct repair of resulting DSBs created by the HDR pathway. In this review, we highlight the recent advances in the development of inhibitors of the non-phosphatidylinositol 3-kinase-related kinases (non-PIKKs) members of the NHEJ, HDR and minor backup SSA and alt-NHEJ DSB-repair pathways. The inhibitors described within this review target the non-PIKKs mediators of DSB repair including Ku70/80, Artemis, DNA Ligase IV, XRCC4, MRN complex, RPA, RAD51, RAD52, ERCC1-XPF, helicases, and DNA polymerase θ. While the DDR PIKKs remain intensely pursued as therapeutic targets, small molecule inhibition of non-PIKKs represents an emerging opportunity in drug discovery that offers considerable potential to impact cancer treatment.
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Affiliation(s)
- Jeremy M. Kelm
- Department of Pharmaceutical Sciences, Eugene Applebaum College of Pharmacy and Health Sciences, Wayne State University, Detroit, MI, United States
| | - Amirreza Samarbakhsh
- Department of Pharmaceutical Sciences, Eugene Applebaum College of Pharmacy and Health Sciences, Wayne State University, Detroit, MI, United States
| | - Athira Pillai
- Department of Pharmaceutical Sciences, Eugene Applebaum College of Pharmacy and Health Sciences, Wayne State University, Detroit, MI, United States
| | | | - Hariprasad Aruri
- Department of Pharmaceutical Sciences, Eugene Applebaum College of Pharmacy and Health Sciences, Wayne State University, Detroit, MI, United States
| | - Deepti S. Pandey
- Department of Pharmaceutical Sciences, Eugene Applebaum College of Pharmacy and Health Sciences, Wayne State University, Detroit, MI, United States
| | | | - John J. Turchi
- Department of Medicine, Indiana University School of Medicine, Indianapolis, IN, United States,NERx Biosciences, Indianapolis, IN, United States,Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, IN, United States
| | - Navnath S. Gavande
- Department of Pharmaceutical Sciences, Eugene Applebaum College of Pharmacy and Health Sciences, Wayne State University, Detroit, MI, United States,Molecular Therapeutics Program, Barbara Ann Karmanos Cancer Institute, Wayne State University School of Medicine, Detroit, MI, United States,*Correspondence: Navnath S. Gavande, ; orcid.org/0000-0002-2413-0235
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24
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Usman M, Okla MK, Asif HM, AbdElgayed G, Muccee F, Ghazanfar S, Ahmad M, Iqbal MJ, Sahar AM, Khaliq G, Shoaib R, Zaheer H, Hameed Y. A pan-cancer analysis of GINS complex subunit 4 to identify its potential role as a biomarker in multiple human cancers. Am J Cancer Res 2022; 12:986-1008. [PMID: 35411239 PMCID: PMC8984884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Accepted: 02/16/2022] [Indexed: 06/14/2023] Open
Abstract
This study was initiated to explore the expression variation, clinical significance, and biological importance of the GINS complex subunit 4 (GINS4) in different human cancers as a shared biomarker via pan-cancer analysis through different platforms including UALCAN, Kaplan Meier (KM) plotter, TNMplot, GENT2, GEPIA, DriverDBv3, Human Protein Atlas (HPA), MEXPRESS, cBioportal, STRING, DAVID, MuTarge, Enrichr, TIMER, and CTD. Our findings have verified the up-regulation of GINS4 in 24 major subtypes of human cancers, and its overexpression was found to be substantially associated with poor overall survival (OS), relapse-free survival (RFs), and metastasis in ESCA, KIRC, LIHC, LUAD, and UCEC. This suggested that GINS4 plays a significant role in the development and progression of these five cancers. Furthermore, we noticed that GINS4 is also overexpressed in ESCA, KIRC, LIHC, LUAD, and UCEC patients with different clinicopathological characteristics. Enrichment analysis revealed the involvement of GINS4 associated genes in a variety of diverse GO and KEGG terms. We also explored few significant correlations between GINS4 expression and promoter methylation, genetic alterations, CNVs, other mutant genes, tumor purity, and immune cells infiltration. In conclusion, our results elucidated that GINS4 can serve as a shared diagnostic, prognostic biomarker, and a potential therapeutic target in ESCA, KIRC, LIHC, LUAD, and UCEC patients with different clinicopathological characteristics.
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Affiliation(s)
- Muhammad Usman
- Department of Biochemistry and Biotechnology, The Islamia University of BahawalpurBahawalpur 63100, Pakistan, Pakistan
| | - Mohammad K Okla
- Department of Botany and Microbiology, College of Science, King Saud UniversityRiyadh 11451, Saudi Arabia
| | - Hafiz Muhammad Asif
- University College of Conventional Medicine, Faculty of Pharmacy and Alternative Medicine, The Islamia University of BahawalpurBahawalpur 63100, Pakistan
| | - Gehad AbdElgayed
- Integrated Molecular Plant Physiology Research, Department of Biology, University of Antwerp2020 Antwerp, Belgium
| | - Fatima Muccee
- Department of Biotechnology, Virtual University of PakistanLahore 54000, Pakistan
| | - Shakira Ghazanfar
- Functional Genomics and Bioinformatics, National Agricultural Research CentreIslamabad 45500, Pakistan
| | - Mukhtiar Ahmad
- Department of Biochemistry and Biotechnology, The Islamia University of BahawalpurBahawalpur 63100, Pakistan, Pakistan
| | | | - Aamina Murad Sahar
- Department of Biosciences, COMSATS University IslamabadIslamabad 4400, Pakistan
| | - Ghania Khaliq
- Department of Zoology, Cholistan University of Veterinary and Animal Sciences BahawalpurBahawalpur 63100, Pakistan
| | - Rabbia Shoaib
- Department of Chemistry, Government College University FaisalabadFaisalabad 3800, Pakistan
| | - Hira Zaheer
- Department of Biochemistry and Biotechnology, The Islamia University of BahawalpurBahawalpur 63100, Pakistan, Pakistan
| | - Yasir Hameed
- Department of Biochemistry and Biotechnology, The Islamia University of BahawalpurBahawalpur 63100, Pakistan, Pakistan
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25
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Xu X, Chang CW, Li M, Liu C, Liu Y. Molecular Mechanisms of the RECQ4 Pathogenic Mutations. Front Mol Biosci 2021; 8:791194. [PMID: 34869606 PMCID: PMC8637615 DOI: 10.3389/fmolb.2021.791194] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Accepted: 11/02/2021] [Indexed: 12/03/2022] Open
Abstract
The human RECQ4 gene encodes an ATP-dependent DNA helicase that contains a conserved superfamily II helicase domain located at the center of the polypeptide. RECQ4 is one of the five RECQ homologs in human cells, and its helicase domain is flanked by the unique amino and carboxyl termini with sequences distinct from other members of the RECQ helicases. Since the identification of the RECQ4 gene in 1998, multiple RECQ4 mutations have been linked to the pathogenesis of three clinical diseases, which are Rothmund-Thomson syndrome, Baller-Gerold syndrome, and RAPADILINO. Patients with these diseases show various developmental abnormalities. In addition, a subset of RECQ4 mutations are associated with high cancer risks, especially for osteosarcoma and/or lymphoma at early ages. The discovery of clinically relevant RECQ4 mutations leads to intriguing questions: how is the RECQ4 helicase responsible for preventing multiple clinical syndromes? What are the mechanisms by which the RECQ4 disease mutations cause tissue abnormalities and drive cancer formation? Furthermore, RECQ4 is highly overexpressed in many cancer types, raising the question whether RECQ4 acts not only as a tumor suppressor but also an oncogene that can be a potential new therapeutic target. Defining the molecular dysfunctions of different RECQ4 disease mutations is imperative to improving our understanding of the complexity of RECQ4 clinical phenotypes and the dynamic roles of RECQ4 in cancer development and prevention. We will review recent progress in examining the molecular and biochemical properties of the different domains of the RECQ4 protein. We will shed light on how the dynamic roles of RECQ4 in human cells may contribute to the complexity of RECQ4 clinical phenotypes.
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Affiliation(s)
- Xiaohua Xu
- Department of Cancer Genetics and Epigenetics, Beckman Research Institute, City of Hope, Duarte, CA, United States
| | - Chou-Wei Chang
- Department of Cancer Genetics and Epigenetics, Beckman Research Institute, City of Hope, Duarte, CA, United States
| | - Min Li
- Department of Cancer Genetics and Epigenetics, Beckman Research Institute, City of Hope, Duarte, CA, United States
| | - Chao Liu
- Department of Cancer Genetics and Epigenetics, Beckman Research Institute, City of Hope, Duarte, CA, United States
| | - Yilun Liu
- Department of Cancer Genetics and Epigenetics, Beckman Research Institute, City of Hope, Duarte, CA, United States
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Hu Y, Zhou W, Xue Z, Liu X, Feng Z, Zhang Y, Zhang X, Liu X, Li W, Zhang Q, Chen A, Huang B, Wang J. Thiabendazole inhibits glioblastoma cell proliferation and invasion targeting MCM2. J Pharmacol Exp Ther 2021; 380:63-75. [PMID: 34750208 DOI: 10.1124/jpet.121.000852] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Accepted: 10/14/2021] [Indexed: 11/22/2022] Open
Abstract
Thiabendazole (TBZ), approved by the U.S. Food and Drug Administration (FDA) for human oral use, elicits a potential anti-cancer activity on cancer cells in vitro and in animal models. Here, we evaluated the efficacy of TBZ in the treatment of human glioblastoma multiforme (GBM). TBZ reduced the viability of GBM cells (P3, U251, LN229, A172, and U118MG) relative to controls in a dose- and time-dependent manner. However, normal human astrocytes (NHA) exhibited a greater IC50 than tumor cells lines and were thus, more resistant to its cytotoxic effects. EdU positive cells and the number of colonies formed was decreased in TBZ-treated cells (at 150 μM, P < 0.05 and at 150 μM, P < 0.001, respectively). This decrease in proliferation was associated with a G2/M arrest as assessed with flow cytometry, and the downregulation of G2/M check point proteins. In addition, TBZ suppressed GBM cell invasion. Analysis of RNA sequencing data comparing TBZ treated cells with controls yielded a group of differentially expressed genes, the functions of which were associated with the cell cycle and DNA replication. The most significantly downregulated gene in TBZ-treated cells was mini-chromosome maintenance protein 2 (MCM2). SiRNA knockdown of MCM2 inhibited proliferation, causing a G2/M arrest in GBM cell lines and suppressed invasion. Taken together, our results demonstrated that TBZ inhibited proliferation and invasion in GBM cells through targeting of MCM2. Significance Statement TBZ inhibits the proliferation and invasion of glioblastoma cells by downregulating the expression of MCM2. These results support the repurposing of TBZ as a possible therapeutic drug in the treatment of GBM.
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Affiliation(s)
- Yaotian Hu
- Department of Neurosurgery, Qilu Hospital of Shandong University, Brain Science Research Institute, China
| | - Wenjing Zhou
- Department of Blood Transfusion, Shandong Provincial Hospital Affiliated to Shandong First Medical University, China
| | - Zhiyi Xue
- Department of Neurosurgery, Qilu Hospital, Institute of Brain and Brain-Inspired Science, China
| | - Xuemeng Liu
- Department of Neurosurgery, Qilu Hospital, Institute of Brain and Brain-Inspired Science, China
| | - Zichao Feng
- Department of Neurosurgery, Qilu Hospital, Institute of Brain and Brain-Inspired Science, China
| | - Yulin Zhang
- Department of Neurosurgery, Qilu Hospital, Institute of Brain and Brain-Inspired Science, China
| | - Xun Zhang
- Department of Neurosurgery, Qilu Hospital, Institute of Brain and Brain-Inspired Science, China
| | - Xiaofei Liu
- Department of Neurosurgery, Qilu Hospital, Institute of Brain and Brain-Inspired Science, China
| | - Wenjie Li
- Department of Neurosurgery, Qilu Hospital, Institute of Brain and Brain-Inspired Science, China
| | - Qing Zhang
- Department of Neurosurgery, Qilu Hospital, Institute of Brain and Brain-Inspired Science, China
| | - Anjing Chen
- Department of Neurosurgery, Qilu Hospital, Institute of Brain and Brain-Inspired Science, China
| | - Bin Huang
- Department of Neurosurgery, Qilu Hospital, Institute of Brain and Brain-Inspired Science, China
| | - Jian Wang
- Department of Neurosurgery, Qilu Hospital, Institute of Brain and Brain-Inspired Science, China
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27
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Zhang Z, Chen P, Xie H, Cao P. Overexpression of GINS4 Is Associated With Tumor Progression and Poor Survival in Hepatocellular Carcinoma. Front Oncol 2021; 11:654185. [PMID: 33842367 PMCID: PMC8027117 DOI: 10.3389/fonc.2021.654185] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Accepted: 03/08/2021] [Indexed: 12/13/2022] Open
Abstract
Purpose Our research was aimed to identify the expression, clinical value and biological significance of GINS complex subunit 4 (GINS4) in hepatocellular carcinoma (HCC). Materials and Methods GINS4 was initially screened through weighted gene co-expression network analysis (WGCNA). The TCGA, GEO, and TIMER databases were applied for analyzing the GINS4 mRNA expression in HCC. GINS4 protein levels were detected via immunohistochemistry (IHC). Receiver operating characteristic (ROC) curve was applied for estimating the diagnostic significance of GINS4 in HCC. Kaplan-Meier plots, Cox model, and nomogram were used to assess the prognostic performance of GINS4 in HCC. Nomogram validation was conducted through time-dependent ROC and decision curve analysis (DCA). The Wanderer, UALCAN, and DiseaseMeth databases were utilized to identify GINS4 methylation levels in HCC. Genes co-expressed with GINS4 in HCC were estimated through the TCGA, cBioPortal, and GEPIA. GO, KEGG, and GSEA unraveled the possible biological mechanisms of GINS4 in HCC. Results WGCNA confirmed that GINS4 was one of hub genes significantly associated with histological grade of HCC. Multiple databases confirmed the significant upregulation of GINS4 in HCC tissues compared with non-tumor controls. IHC analysis of 35 HCC patients demonstrated that overexpressed GINS4 positively correlated with advanced TNM stage and poor pathological differentiation. GINS4 could effectively differentiate HCC cases from healthy individuals, with an AUC of 0.865. Increased GINS4 expression predicted unsatisfactory prognosis in HCC patients, especially in age >60 years, histological grade 1, HBV infection-negative, and occurring relapse subgroup. Nomogram incorporating GINS4 level and TNM stage displayed satisfactory predictive accuracy and clinical utility in predicting HCC prognosis. Upregulated GINS4 exhibited hypomethylated levels in HCC. Functional analysis indicated that GINS4 potentially positively modulated cell cycle and PI3K/AKT/mTOR pathway. Conclusion GINS4 is overexpressed in HCC and is correlated with undesirable survival of HCC patients.
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Affiliation(s)
- Ziying Zhang
- Department of Oncology, Third Xiangya Hospital, Central South University, Changsha, China
| | - Peng Chen
- Department of Urology, Xiangya Hospital, Central South University, Changsha, China
| | - Hui Xie
- Department of Thoracic Surgery, Second Xiangya Hospital, Central South University, Changsha, China
| | - Peiguo Cao
- Department of Oncology, Third Xiangya Hospital, Central South University, Changsha, China
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Lu HP, Du XF, Li JD, Huang SN, He RQ, Wu HY, Li MF, Wu WZ, Chen JT, Mo WJ, Chen G. Expression of Cell Division Cycle Protein 45 in Tissue Microarrays and the CDC45 Gene by Bioinformatics Analysis in Human Hepatocellular Carcinoma and Patient Outcomes. Med Sci Monit 2021; 27:e928800. [PMID: 33622998 PMCID: PMC7919231 DOI: 10.12659/msm.928800] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Background Hepatocellular carcinoma (HCC) causes a heavy disease burden worldwide. Cell division cycle 45 (Cdc45) and its encoding gene (CDC45) have been studied for a long time, but their expression patterns and roles in liver carcinogenesis and advanced HCC deterioration are still incompletely understood. This study integrated tissue microarray and bioinformatics analyses to explore the expression and clinical value of CDC45 and Cdc45 in HCC. Material/Methods In HCC, the expression and relationships with clinic-pathological parameters of CDC45 and Cdc45 were investigated by integrating the RNA-sequencing data, downloaded from The Cancer Genome Atlas and Oncomine databases, and tissue microarray with immunohistochemistry staining. Co-expressed genes and genetic alterations of CDC45 separately obtained from Oncomine and cBioPortal databases were identified to shed light on the potential mechanisms of CDC45 in HCC. Results CDC45 and Cdc45 were both overexpressed in HCC tissues, and the CDC45 level progressively increased from stage I to III. The survival outcomes of the group with high CDC45 expression were significantly worse compared with the group with low expression. Amplification and deep deletion were 2 major significant alteration types in HCC patients, and the outcomes were worse in patients with altered versus unaltered CDC45. NUDT1, E2F1, CCNE2, MCM5, and CENPM were identified as the most significantly co-expressed genes. Conclusions CDC45 and Cdc45 were both upregulated in HCC, and increased expression levels and genetic alternations of CDC45 were correlated with worse prognosis in HCC patients. CDC45 may promote HCC by co-expressing with NUDT1, E2F1, CCNE2, MCM5, and CENPM.
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Affiliation(s)
- Hui-Ping Lu
- Department of Pathology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China (mainland)
| | - Xiu-Fang Du
- Department of Pathology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China (mainland)
| | - Jian-Di Li
- Department of Pathology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China (mainland)
| | - Su-Ning Huang
- Department of Radiotherapy, Guangxi Medical University Cancer Hospital, Nanning, Guangxi, China (mainland)
| | - Rong-Quan He
- Department of Medical Oncology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China (mainland)
| | - Hua-Yu Wu
- Department of Cell Biology and Genetics, School of Preclinical Medicine, Guangxi Medical University, Nanning, Guangxi, China (mainland)
| | - Ming-Fen Li
- Laboratory Department, The First Affiliated Hospital of The University of Chinese Medicine in Guangxi, Nanning, Guangxi, China (mainland)
| | - Wei-Zi Wu
- Department of Pathology, Lingshan People's Hospital, Qinzhou, Guangxi, China (mainland)
| | - Ji-Tian Chen
- Department of Pathology, Lingshan People's Hospital, Qinzhou, Guangxi, China (mainland)
| | - Wei-Jia Mo
- Department of Pathology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China (mainland)
| | - Gang Chen
- Department of Pathology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China (mainland)
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Denkiewicz-Kruk M, Jedrychowska M, Endo S, Araki H, Jonczyk P, Dmowski M, Fijalkowska IJ. Recombination and Pol ζ Rescue Defective DNA Replication upon Impaired CMG Helicase-Pol ε Interaction. Int J Mol Sci 2020; 21:ijms21249484. [PMID: 33322195 PMCID: PMC7762974 DOI: 10.3390/ijms21249484] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Revised: 12/06/2020] [Accepted: 12/09/2020] [Indexed: 11/22/2022] Open
Abstract
The CMG complex (Cdc45, Mcm2–7, GINS (Psf1, 2, 3, and Sld5)) is crucial for both DNA replication initiation and fork progression. The CMG helicase interaction with the leading strand DNA polymerase epsilon (Pol ε) is essential for the preferential loading of Pol ε onto the leading strand, the stimulation of the polymerase, and the modulation of helicase activity. Here, we analyze the consequences of impaired interaction between Pol ε and GINS in Saccharomyces cerevisiae cells with the psf1-100 mutation. This significantly affects DNA replication activity measured in vitro, while in vivo, the psf1-100 mutation reduces replication fidelity by increasing slippage of Pol ε, which manifests as an elevated number of frameshifts. It also increases the occurrence of single-stranded DNA (ssDNA) gaps and the demand for homologous recombination. The psf1-100 mutant shows elevated recombination rates and synthetic lethality with rad52Δ. Additionally, we observe increased participation of DNA polymerase zeta (Pol ζ) in DNA synthesis. We conclude that the impaired interaction between GINS and Pol ε requires enhanced involvement of error-prone Pol ζ, and increased participation of recombination as a rescue mechanism for recovery of impaired replication forks.
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Affiliation(s)
- Milena Denkiewicz-Kruk
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Pawinskiego 5a, 02-106 Warsaw, Poland; (M.D.-K.); (M.J.); (P.J.)
| | - Malgorzata Jedrychowska
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Pawinskiego 5a, 02-106 Warsaw, Poland; (M.D.-K.); (M.J.); (P.J.)
| | - Shizuko Endo
- National Institute of Genetics, 1111 Yata, Mishima, Shizuoka 411-8540, Japan; (S.E.); (H.A.)
| | - Hiroyuki Araki
- National Institute of Genetics, 1111 Yata, Mishima, Shizuoka 411-8540, Japan; (S.E.); (H.A.)
| | - Piotr Jonczyk
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Pawinskiego 5a, 02-106 Warsaw, Poland; (M.D.-K.); (M.J.); (P.J.)
| | - Michal Dmowski
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Pawinskiego 5a, 02-106 Warsaw, Poland; (M.D.-K.); (M.J.); (P.J.)
- Correspondence: (M.D.); (I.J.F.); Tel.: +48-22-5921128 (M.D.); +48-22-5921113 (I.J.F.)
| | - Iwona J. Fijalkowska
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Pawinskiego 5a, 02-106 Warsaw, Poland; (M.D.-K.); (M.J.); (P.J.)
- Correspondence: (M.D.); (I.J.F.); Tel.: +48-22-5921128 (M.D.); +48-22-5921113 (I.J.F.)
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Dhar S, Datta A, Brosh RM. DNA helicases and their roles in cancer. DNA Repair (Amst) 2020; 96:102994. [PMID: 33137625 DOI: 10.1016/j.dnarep.2020.102994] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Accepted: 09/28/2020] [Indexed: 12/15/2022]
Abstract
DNA helicases, known for their fundamentally important roles in genomic stability, are high profile players in cancer. Not only are there monogenic helicase disorders with a strong disposition to cancer, it is well appreciated that helicase variants are associated with specific cancers (e.g., breast cancer). Flipping the coin, DNA helicases are frequently overexpressed in cancerous tissues and reduction in helicase gene expression results in reduced proliferation and growth capacity, as well as DNA damage induction and apoptosis of cancer cells. The seminal roles of helicases in the DNA damage and replication stress responses, as well as DNA repair pathways, validate their vital importance in cancer biology and suggest their potential values as targets in anti-cancer therapy. In recent years, many laboratories have characterized the specialized roles of helicase to resolve transcription-replication conflicts, maintain telomeres, mediate cell cycle checkpoints, remodel stalled replication forks, and regulate transcription. In vivo models, particularly mice, have been used to interrogate helicase function and serve as a bridge for preclinical studies that may lead to novel therapeutic approaches. In this review, we will summarize our current knowledge of DNA helicases and their roles in cancer, emphasizing the latest developments.
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Affiliation(s)
- Srijita Dhar
- Laboratory of Molecular Gerontology, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, USA
| | - Arindam Datta
- Laboratory of Molecular Gerontology, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, USA
| | - Robert M Brosh
- Laboratory of Molecular Gerontology, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, USA.
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31
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Hao M, Wang H, Zhang C, Li C, Wang X. Minichromosome maintenance protein 5 is an important pathogenic factor of oral squamous cell carcinoma. Oncol Lett 2020; 20:109. [PMID: 32831928 PMCID: PMC7439113 DOI: 10.3892/ol.2020.11970] [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: 01/18/2020] [Accepted: 07/08/2020] [Indexed: 01/29/2023] Open
Abstract
Oral squamous cell carcinoma is one of the most common causes of malignancy-associated death. Early diagnosis of oral squamous cell carcinoma (OSCC) is important in patient treatment and prognostic evaluation. Due to the lack of significant therapeutic benefit, the 5-year survival rate has not improved. Therefore, effective novel markers are needed to improve diagnosis. To determine novel promising diagnostic biomarkers for OSCC, 416 upregulated and 416 downregulated differentially expressed genes were screened from OSCC tissues using an RNA microarray. The results suggested that minichromosome maintenance protein (MCM5) mRNA was significantly overexpressed in OSCC tissues compared with that in adjacent normal tissues. Moreover, silencing of MCM5 expression an OSCC cell line (SCC-15) significantly impaired proliferation and colony formation. Furthermore, negative regulation of the mRNA and protein expression of MCM5 and demonstrated that MCM5 served as a cancer-promoting gene modulating OSCC cell proliferation through induced G2/M phase arrest. In this process, the mRNA expression of cyclin E and cyclin-dependent kinase 2 was downregulated, while p21 expression was upregulated. These results suggested that MCM5 may be an important pathogenic factor of OSCC. High expression levels of MCM5 may serve as a marker for the early diagnosis of OSCC.
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Affiliation(s)
- Miao Hao
- Scientific Research Center, China-Japan Union Hospital of Jilin University, Changchun, Jilin 130033, P.R. China
| | - Huiyu Wang
- Department of Stomatology, China-Japan Union Hospital of Jilin University, Changchun, Jilin 130033, P.R. China
| | - Chu Zhang
- Department of Stomatology, China-Japan Union Hospital of Jilin University, Changchun, Jilin 130033, P.R. China
| | - Chunyan Li
- Department of Stomatology, China-Japan Union Hospital of Jilin University, Changchun, Jilin 130033, P.R. China
| | - Xiaofeng Wang
- Department of Stomatology, China-Japan Union Hospital of Jilin University, Changchun, Jilin 130033, P.R. China
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Reed DR, Alexandrow MG. Myc and the Replicative CMG Helicase: The Creation and Destruction of Cancer: Myc Over-Activation of CMG Helicases Drives Tumorigenesis and Creates a Vulnerability in CMGs for Therapeutic Intervention. Bioessays 2020; 42:e1900218. [PMID: 32080866 PMCID: PMC8223603 DOI: 10.1002/bies.201900218] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Revised: 01/23/2020] [Indexed: 12/27/2022]
Abstract
Myc-driven tumorigenesis involves a non-transcriptional role for Myc in over-activating replicative Cdc45-MCM-GINS (CMG) helicases. Excessive stimulation of CMG helicases by Myc mismanages CMG function by diminishing the number of reserve CMGs necessary for fidelity of DNA replication and recovery from replicative stresses. One potential outcome of these events is the creation of DNA damage that alters genomic structure/function, thereby acting as a driver for tumorigenesis and tumor heterogeneity. Intriguingly, another potential outcome of this Myc-induced CMG helicase over-activation is the creation of a vulnerability in cancer whereby tumor cells specifically lack enough unused reserve CMG helicases to recover from fork-stalling drugs commonly used in chemotherapy. This review provides molecular and clinical support for this provocative hypothesis that excessive activation of CMG helicases by Myc may not only drive tumorigenesis, but also confer an exploitable "reserve CMG helicase vulnerability" that supports developing innovative CMG-focused therapeutic approaches for cancer management.
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Affiliation(s)
- Damon R Reed
- Department of Interdisciplinary Cancer Management, Moffitt Cancer Center and Research Institute, Tampa, FL, 33612, USA
| | - Mark G Alexandrow
- Department of Molecular Oncology, Moffitt Cancer Center and Research Institute, Tampa, FL, 33612, USA
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MCMs in Cancer: Prognostic Potential and Mechanisms. Anal Cell Pathol (Amst) 2020; 2020:3750294. [PMID: 32089988 PMCID: PMC7023756 DOI: 10.1155/2020/3750294] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Accepted: 01/25/2020] [Indexed: 12/17/2022] Open
Abstract
Enabling replicative immortality and uncontrolled cell cycle are hallmarks of cancer cells. Minichromosome maintenance proteins (MCMs) exhibit helicase activity in replication initiation and play vital roles in controlling replication times within a cell cycle. Overexpressed MCMs are detected in various cancerous tissues and cancer cell lines. Previous studies have proposed MCMs as promising proliferation markers in cancers, while the prognostic values remain controversial and the underlying mechanisms remain unascertained. This review provides an overview of the significant findings regarding the cellular and tumorigenic functions of the MCM family. Besides, current evidence of the prognostic roles of MCMs is retrospectively reviewed. This work also offers insight into the mechanisms of MCMs prompting carcinogenesis and adverse prognosis, providing information for future research. Finally, MCMs in liver cancer are specifically discussed, and future perspectives are provided.
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Toda H, Seki N, Kurozumi S, Shinden Y, Yamada Y, Nohata N, Moriya S, Idichi T, Maemura K, Fujii T, Horiguchi J, Kijima Y, Natsugoe S. RNA-sequence-based microRNA expression signature in breast cancer: tumor-suppressive miR-101-5p regulates molecular pathogenesis. Mol Oncol 2020; 14:426-446. [PMID: 31755218 PMCID: PMC6998431 DOI: 10.1002/1878-0261.12602] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Revised: 11/05/2019] [Accepted: 11/19/2019] [Indexed: 12/24/2022] Open
Abstract
Aberrantly expressed microRNA (miRNA) are known to disrupt intracellular RNA networks in cancer cells. Exploring miRNA-dependent molecular networks is a major challenge in cancer research. In this study, we performed RNA-sequencing of breast cancer (BrCa) clinical specimens to identify tumor-suppressive miRNA in BrCa. In total, 64 miRNA were identified as candidate tumor-suppressive miRNA in BrCa cells. Analysis of our BrCa signature revealed that several miRNA duplexes (guide strand/passenger strand) derived from pre-miRNA were downregulated in BrCa tissues (e.g. miR-99a-5p/-3p, miR-101-5p/-3p, miR-126-5p/-3p, miR-143-5p/-3p, and miR-144-5p/-3p). Among these miRNA, we focused on miR-101-5p, the passenger strand of pre-miR-101, and investigated its tumor-suppressive roles and oncogenic targets in BrCa cells. Low expression of miR-101-5p predicted poor prognosis in patients with BrCa (overall survival rate: P = 0.0316). Ectopic expression of miR-101-5p attenuated aggressive phenotypes, e.g. proliferation, migration, and invasion, in BrCa cells. Finally, we identified seven putative oncogenic genes (i.e. High Mobility Group Box 3, Epithelial splicing regulatory protein 1, GINS complex subunit 1 (GINS1), Tumor Protein D52, Serine/Arginine-Rich Splicing Factor Kinase 1, Vang-like protein 1, and Mago Homolog B) regulated by miR-101-5p in BrCa cells. The expression of these target genes was associated with the molecular pathogenesis of BrCa. Furthermore, we explored the oncogenic roles of GINS1, whose function had not been previously elucidated, in BrCa cells. Aberrant expression of GINS1 mRNA and protein was observed in BrCa clinical specimens, and high GINS1 expression significantly predicted poor prognosis in patients with BrCa (overall survival rate: P = 0.0126). Knockdown of GINS1 inhibited the malignant features of BrCa cells. Thus, identification of tumor-suppressive miRNA and molecular networks controlled by these miRNA in BrCa cells may be an effective strategy for elucidation of the molecular pathogenesis of this disease.
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Affiliation(s)
- Hiroko Toda
- Department of Digestive Surgery, Breast and Thyroid SurgeryGraduate School of Medical and Dental SciencesKagoshima UniversityJapan
| | - Naohiko Seki
- Department of Functional GenomicsChiba University Graduate School of MedicineJapan
| | - Sasagu Kurozumi
- Department of General Surgical ScienceGunma University Graduate School of MedicineJapan
| | - Yoshiaki Shinden
- Department of Digestive Surgery, Breast and Thyroid SurgeryGraduate School of Medical and Dental SciencesKagoshima UniversityJapan
| | - Yasutaka Yamada
- Department of Functional GenomicsChiba University Graduate School of MedicineJapan
| | | | - Shogo Moriya
- Department of Biochemistry and GeneticsChiba University Graduate School of MedicineJapan
| | - Tetsuya Idichi
- Department of Digestive Surgery, Breast and Thyroid SurgeryGraduate School of Medical and Dental SciencesKagoshima UniversityJapan
| | - Kosei Maemura
- Department of Digestive Surgery, Breast and Thyroid SurgeryGraduate School of Medical and Dental SciencesKagoshima UniversityJapan
| | - Takaaki Fujii
- Department of General Surgical ScienceGunma University Graduate School of MedicineJapan
| | - Jun Horiguchi
- Department of Breast SurgeryInternational University of Health and WelfareChibaJapan
| | - Yuko Kijima
- Department of Digestive Surgery, Breast and Thyroid SurgeryGraduate School of Medical and Dental SciencesKagoshima UniversityJapan
- Department of Breast SurgeryFujita Health UniversityAichiJapan
| | - Shoji Natsugoe
- Department of Digestive Surgery, Breast and Thyroid SurgeryGraduate School of Medical and Dental SciencesKagoshima UniversityJapan
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Qiu HZ, Huang J, Xiang CC, Li R, Zuo ED, Zhang Y, Shan L, Cheng X. Screening and Discovery of New Potential Biomarkers and Small Molecule Drugs for Cervical Cancer: A Bioinformatics Analysis. Technol Cancer Res Treat 2020; 19:1533033820980112. [PMID: 33302814 PMCID: PMC7734488 DOI: 10.1177/1533033820980112] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Revised: 10/09/2020] [Accepted: 11/04/2020] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Cervical cancer (CC) is the second most common type of malignant tumor survival rate is low in advanced stage, metastatic, and recurrent CC patients. This study aimed at identifying potential genes and drugs for CC diagnosis and targeting therapies. METHODS Three GEO mRNA microarray datasets of CC tissues and non-cancerous tissues were analyzed for differentially expressed genes (DEGs) by limma package. GO (Gene Ontologies) and KEGG (Kyoto Encyclopedia of Genes and Genomes) were used to explore the relationships between the DEGs. Protein-protein interaction (PPI) of these genes was established by the STRING database. MCODE was used for screening significant modules in the PPI networks to select hub genes. Biochemical mechanisms of the hub genes were investigated with Metascape. GEPIA database was used for validating the core genes. According to these DEGs, molecular candidates for CC were recognized from the CMAP database. RESULTS We identified 309 overlapping DEGs in the 2 tissue-types. Pathway analysis revealed that the DEGs were involved in cell cycle, DNA replication, and p53 signaling. PPI networks between overlapping DEGs showed 68 high-connectivity DEGs that were chosen as hub genes. The GEPIA database showed that the expression levels of RRM2, CDC45, GINS2, HELLS, KNTC1, MCM2, MYBL2, PCNA, RAD54 L, RFC4, RFC5, TK1, TOP2A, and TYMS in CC tissues were significantly different from those in the healthy tissues and were significantly relevant to the OS of CC. We found 10 small molecules from the CMAP database that could change the trend of gene expression in CC tissues, including piperlongumine and chrysin. CONCLUSIONS The 14 DEGs identified in this study could serve as novel prognosis biomarkers for the detection and forecasting of CC. Small molecule drugs like piperlongumine and chrysin could be potential therapeutic drugs for CC treatment.
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Affiliation(s)
- Hui-Zhu Qiu
- Department of Hematology and Oncology, Soochow University Affiliated Taicang Hospital (The First People’s Hospital of Taicang), Jiangsu, China
| | - Ji Huang
- Department of Pharmacy, Soochow University Affiliated Taicang Hospital (The First People’s Hospital of Taicang), Jiangsu, China
| | - Cheng-Cheng Xiang
- Department of Hematology and Oncology, Soochow University Affiliated Taicang Hospital (The First People’s Hospital of Taicang), Jiangsu, China
| | - Rong Li
- Department of Hematology and Oncology, Soochow University Affiliated Taicang Hospital (The First People’s Hospital of Taicang), Jiangsu, China
| | - Er-Dong Zuo
- Department of Hematology and Oncology, Soochow University Affiliated Taicang Hospital (The First People’s Hospital of Taicang), Jiangsu, China
| | - Yuan Zhang
- Department of Hematology and Oncology, Soochow University Affiliated Taicang Hospital (The First People’s Hospital of Taicang), Jiangsu, China
| | - Li Shan
- Department of Hematology and Oncology, Soochow University Affiliated Taicang Hospital (The First People’s Hospital of Taicang), Jiangsu, China
| | - Xu Cheng
- Department of Hematology and Oncology, Soochow University Affiliated Taicang Hospital (The First People’s Hospital of Taicang), Jiangsu, China
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Defects in the GINS complex increase the instability of repetitive sequences via a recombination-dependent mechanism. PLoS Genet 2019; 15:e1008494. [PMID: 31815930 PMCID: PMC6922473 DOI: 10.1371/journal.pgen.1008494] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Revised: 12/19/2019] [Accepted: 10/25/2019] [Indexed: 12/16/2022] Open
Abstract
Faithful replication and repair of DNA lesions ensure genome maintenance. During replication in eukaryotic cells, DNA is unwound by the CMG helicase complex, which is composed of three major components: the Cdc45 protein, Mcm2-7, and the GINS complex. The CMG in complex with DNA polymerase epsilon (CMG-E) participates in the establishment and progression of the replisome. Impaired functioning of the CMG-E was shown to induce genomic instability and promote the development of various diseases. Therefore, CMG-E components play important roles as caretakers of the genome. In Saccharomyces cerevisiae, the GINS complex is composed of the Psf1, Psf2, Psf3, and Sld5 essential subunits. The Psf1-1 mutant form fails to interact with Psf3, resulting in impaired replisome assembly and chromosome replication. Here, we show increased instability of repeat tracts (mononucleotide, dinucleotide, trinucleotide and longer) in yeast psf1-1 mutants. To identify the mechanisms underlying this effect, we analyzed repeated sequence instability using derivatives of psf1-1 strains lacking genes involved in translesion synthesis, recombination, or mismatch repair. Among these derivatives, deletion of RAD52, RAD51, MMS2, POL32, or PIF1 significantly decreased DNA repeat instability. These results, together with the observed increased amounts of single-stranded DNA regions and Rfa1 foci suggest that recombinational mechanisms make important contributions to repeat tract instability in psf1-1 cells. We propose that defective functioning of the CMG-E complex in psf1-1 cells impairs the progression of DNA replication what increases the contribution of repair mechanisms such as template switch and break-induced replication. These processes require sequence homology search which in case of a repeated DNA tract may result in misalignment leading to its expansion or contraction. Processes that ensure genome stability are crucial for all organisms to avoid mutations and decrease the risk of diseases. The coordinated activity of mechanisms underlying the maintenance of high-fidelity DNA duplication and repair is critical to deal with the malfunction of replication forks or DNA damage. Repeated sequences in DNA are particularly prone to instability; these sequences undergo expansions or contractions, leading in humans to various neurological, neurodegenerative, and neuromuscular disorders. A mutant form of one of the noncatalytic subunits of active DNA helicase complex impairs DNA replication. Here, we show that this form also significantly increases the instability of mononucleotide, dinucleotide, trinucleotide and longer repeat tracts. Our results suggest that in cells that harbor a mutated variant of the helicase complex, continuation of DNA replication is facilitated by recombination processes, and this mechanism can be highly mutagenic during repair synthesis through repetitive regions, especially regions that form secondary structures. Our results indicate that proper functioning of the DNA helicase complex is crucial for maintenance of the stability of repeated DNA sequences, especially in the context of recently described disorders in which mutations or deregulation of the human homologs of genes encoding DNA helicase subunits were observed.
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Liu X, Yang Y, Xu C, Yang H, Chen S, Chen H. RNA sequencing analysis of the CAL-27 cell response to over-expressed ZNF750 gene revealed an extensive regulation on cell cycle. Biomed Pharmacother 2019; 118:109377. [DOI: 10.1016/j.biopha.2019.109377] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Revised: 08/16/2019] [Accepted: 08/22/2019] [Indexed: 02/08/2023] Open
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Perera HM, Behrmann MS, Hoang JM, Griffin WC, Trakselis MA. Contacts and context that regulate DNA helicase unwinding and replisome progression. Enzymes 2019; 45:183-223. [PMID: 31627877 DOI: 10.1016/bs.enz.2019.08.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Hexameric DNA helicases involved in the separation of duplex DNA at the replication fork have a universal architecture but have evolved from two separate protein families. The consequences are that the regulation, translocation polarity, strand specificity, and architectural orientation varies between phage/bacteria to that of archaea/eukaryotes. Once assembled and activated for single strand DNA translocation and unwinding, the DNA polymerase couples tightly to the helicase forming a robust replisome complex. However, this helicase-polymerase interaction can be challenged by various forms of endogenous or exogenous agents that can stall the entire replisome or decouple DNA unwinding from synthesis. The consequences of decoupling can be severe, leading to a build-up of ssDNA requiring various pathways for replication fork restart. All told, the hexameric helicase sits prominently at the front of the replisome constantly responding to a variety of obstacles that require transient unwinding/reannealing, traversal of more stable blocks, and alternations in DNA unwinding speed that regulate replisome progression.
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Affiliation(s)
- Himasha M Perera
- Department of Chemistry and Biochemistry, Baylor University, Waco, TX, United States
| | - Megan S Behrmann
- Department of Chemistry and Biochemistry, Baylor University, Waco, TX, United States
| | - Joy M Hoang
- Department of Chemistry and Biochemistry, Baylor University, Waco, TX, United States
| | - Wezley C Griffin
- Department of Chemistry and Biochemistry, Baylor University, Waco, TX, United States
| | - Michael A Trakselis
- Department of Chemistry and Biochemistry, Baylor University, Waco, TX, United States.
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Post-Translational Modifications of the Mini-Chromosome Maintenance Proteins in DNA Replication. Genes (Basel) 2019; 10:genes10050331. [PMID: 31052337 PMCID: PMC6563057 DOI: 10.3390/genes10050331] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Revised: 04/26/2019] [Accepted: 04/26/2019] [Indexed: 12/15/2022] Open
Abstract
The eukaryotic mini-chromosome maintenance (MCM) complex, composed of MCM proteins 2-7, is the core component of the replisome that acts as the DNA replicative helicase to unwind duplex DNA and initiate DNA replication. MCM10 tightly binds the cell division control protein 45 homolog (CDC45)/MCM2-7/ DNA replication complex Go-Ichi-Ni-San (GINS) (CMG) complex that stimulates CMG helicase activity. The MCM8-MCM9 complex may have a non-essential role in activating the pre-replicative complex in the gap 1 (G1) phase by recruiting cell division cycle 6 (CDC6) to the origin recognition complex (ORC). Each MCM subunit has a distinct function achieved by differential post-translational modifications (PTMs) in both DNA replication process and response to replication stress. Such PTMs include phosphorylation, ubiquitination, small ubiquitin-like modifier (SUMO)ylation, O-N-acetyl-D-glucosamine (GlcNAc)ylation, and acetylation. These PTMs have an important role in controlling replication progress and genome stability. Because MCM proteins are associated with various human diseases, they are regarded as potential targets for therapeutic development. In this review, we summarize the different PTMs of the MCM proteins, their involvement in DNA replication and disease development, and the potential therapeutic implications.
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Ngo M, Wechter N, Tsai E, Shun TY, Gough A, Schurdak ME, Schwacha A, Vogt A. A High-Throughput Assay for DNA Replication Inhibitors Based upon Multivariate Analysis of Yeast Growth Kinetics. SLAS DISCOVERY 2019; 24:669-681. [PMID: 30802412 DOI: 10.1177/2472555219829740] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Mcm2-7 is the molecular motor of eukaryotic replicative helicase, and the regulation of this complex is a major focus of cellular S-phase regulation. Despite its cellular importance, few small-molecule inhibitors of this complex are known. Based upon our genetic analysis of synthetic growth defects between mcm alleles and a range of other alleles, we have developed a high-throughput screening (HTS) assay using a well-characterized mcm mutant (containing the mcm2DENQ allele) to identify small molecules that replicate such synthetic growth defects. During assay development, we found that aphidicolin (inhibitor of DNA polymerase alpha) and XL413 (inhibitor of the DNA replication-dependent kinase CDC7) preferentially inhibited growth of the mcm2DENQ strain relative to the wild-type parental strain. However, as both strains demonstrated some degree of growth inhibition with these compounds, small and variable assay windows can result. To increase assay sensitivity and reproducibility, we developed a strategy combining the analysis of cell growth kinetics with linear discriminant analysis (LDA). We found that LDA greatly improved assay performance and captured a greater range of synthetic growth inhibition phenotypes, yielding a versatile analysis platform conforming to HTS requirements.
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Affiliation(s)
- Marilyn Ngo
- 1 Drug Discovery Institute, University of Pittsburgh Medical School, Pittsburgh, PA, USA
| | - Nick Wechter
- 2 Department of Biological Sciences, University of Pittsburgh, Pittsburgh, PA, USA
| | - Emily Tsai
- 3 Apollo Medical Optics, Ltd., Taipei City, Taiwan (R.O.C.)
| | - Tong Ying Shun
- 1 Drug Discovery Institute, University of Pittsburgh Medical School, Pittsburgh, PA, USA
| | - Albert Gough
- 1 Drug Discovery Institute, University of Pittsburgh Medical School, Pittsburgh, PA, USA.,4 Department of Computational and Systems Biology, University of Pittsburgh, Pittsburgh, PA, USA
| | - Mark E Schurdak
- 1 Drug Discovery Institute, University of Pittsburgh Medical School, Pittsburgh, PA, USA.,4 Department of Computational and Systems Biology, University of Pittsburgh, Pittsburgh, PA, USA.,5 Cancer Therapeutics Program, UPMC Hillman Cancer Center, Pittsburgh, PA, USA
| | - Anthony Schwacha
- 2 Department of Biological Sciences, University of Pittsburgh, Pittsburgh, PA, USA
| | - Andreas Vogt
- 1 Drug Discovery Institute, University of Pittsburgh Medical School, Pittsburgh, PA, USA.,4 Department of Computational and Systems Biology, University of Pittsburgh, Pittsburgh, PA, USA.,5 Cancer Therapeutics Program, UPMC Hillman Cancer Center, Pittsburgh, PA, USA
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Up-regulated and interrelated expressions of GINS subunits predict poor prognosis in hepatocellular carcinoma. Biosci Rep 2018; 38:BSR20181178. [PMID: 30413605 PMCID: PMC6435550 DOI: 10.1042/bsr20181178] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Revised: 10/31/2018] [Accepted: 11/06/2018] [Indexed: 12/17/2022] Open
Abstract
The GINS complex is one of the core components of the eukaryotic replicative helicase CMG (Cdc45–MCM helicase–GINS) complex that serves as the replicative helicase unwinding duplex DNA ahead of moving replication fork during chromosome duplication. Many studies have highlighted the important functions amongst GINS subunits in various cancers. Nevertheless, the functions and prognostic roles of distinct GINS subunits in hepatocellular carcinoma (HCC) were largely unexplored. In the present study, we reported the prognostic values of GINS subunits in HCC patients through analysis of several databases, including Oncomine, (TCGA), and Kaplan–Meier Plotter (KMPlotter). We found that mRNA expressions of all GINS subunits were significantly up-regulated in HCC tumor than in non-tumor liver tissues. Survival analysis revealed that elevated expression of individual GINS subunit predicts a poor overall survival (OS) in all HCC patients. When sorting the patients by gender, the correlation between elevated expression of individual GINS subunit and poor OS remains significant in male patient subgroup, but not in female patient subgroup. Additionally, we found that co-overexpression of all GINS subunits was significantly associated with a higher hazard ratio, suggesting the GINS complex may co-operate to promote HCC progression. Indeed, their expressions were highly correlated with each other in the same cohort and TRANSFAC analysis revealed that four transcription factors including C/EBPα, Oct-1, Sp1, and USF may serve as common transcription factors binding to the promoters of all four GINS subunits. Therefore, we propose that individual GINS subunit or GINS complex as a whole could be potential prognostic biomarkers for HCC.
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Abstract
Recently published structural and functional analyses of the CMG complex have provided insight into the mechanism of its DNA helicase function and into the distinct roles of its central six component proteins MCM2-MCM7 (MCM2-7). To activate CMG helicase, the two protein kinases CDK and DDK, as well as MCM10, are required. In addition to the initiation of DNA replication, MCM function must be regulated at the DNA replication steps of elongation and termination. Polyubiquitylation of MCM7 is involved in terminating MCM function. Reinitiation of DNA replication in a single cell cycle, which is prevented mainly by CDK, is understood at the molecular level. MCM2-7 gene expression is regulated during cellular aging and the cell cycle, and the expression depends on oxygen concentration. These regulatory processes have been described recently. Genomic structural alteration, which is an essential element in cancer progression, is mainly generated by disruptions of DNA replication fork structures. A point mutation in MCM4 that disturbs MCM2-7 function results in genomic instability, leading to the generation of cancer cells. In this review, I focus on the following points: 1) function of the MCM2-7 complex, 2) activation of MCM2-7 helicase, 3) regulation of MCM2-7 function, 4) MCM2-7 expression, and 5) the role of MCM mutation in cancer progression.
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