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Bei Y, Zhu Y, Zhou J, Ai S, Yao J, Yin M, Hu M, Qi W, Spanos M, Li L, Wei M, Huang Z, Gao J, Liu C, van der Kraak PH, Li G, Lei Z, Sluijter JPG, Xiao J. Inhibition of Hmbox1 Promotes Cardiomyocyte Survival and Glucose Metabolism Through Gck Activation in Ischemia/Reperfusion Injury. Circulation 2024; 150:848-866. [PMID: 38708602 DOI: 10.1161/circulationaha.123.067592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2023] [Accepted: 04/11/2024] [Indexed: 05/07/2024]
Abstract
BACKGROUND Exercise-induced physiological cardiac growth regulators may protect the heart from ischemia/reperfusion (I/R) injury. Homeobox-containing 1 (Hmbox1), a homeobox family member, has been identified as a putative transcriptional repressor and is downregulated in the exercised heart. However, its roles in exercise-induced physiological cardiac growth and its potential protective effects against cardiac I/R injury remain largely unexplored. METHODS We studied the function of Hmbox1 in exercise-induced physiological cardiac growth in mice after 4 weeks of swimming exercise. Hmbox1 expression was then evaluated in human heart samples from deceased patients with myocardial infarction and in the animal cardiac I/R injury model. Its role in cardiac I/R injury was examined in mice with adeno-associated virus 9 (AAV9) vector-mediated Hmbox1 knockdown and in those with cardiac myocyte-specific Hmbox1 ablation. We performed RNA sequencing, promoter prediction, and binding assays and identified glucokinase (Gck) as a downstream effector of Hmbox1. The effects of Hmbox1 together with Gck were examined in cardiomyocytes to evaluate their cell size, proliferation, apoptosis, mitochondrial respiration, and glycolysis. The function of upstream regulator of Hmbox1, ETS1, was investigated through ETS1 overexpression in cardiac I/R mice in vivo. RESULTS We demonstrated that Hmbox1 downregulation was required for exercise-induced physiological cardiac growth. Inhibition of Hmbox1 increased cardiomyocyte size in isolated neonatal rat cardiomyocytes and human embryonic stem cell-derived cardiomyocytes but did not affect cardiomyocyte proliferation. Under pathological conditions, Hmbox1 was upregulated in both human and animal postinfarct cardiac tissues. Furthermore, both cardiac myocyte-specific Hmbox1 knockout and AAV9-mediated Hmbox1 knockdown protected against cardiac I/R injury and heart failure. Therapeutic effects were observed when sh-Hmbox1 AAV9 was administered after I/R injury. Inhibition of Hmbox1 activated the Akt/mTOR/P70S6K pathway and transcriptionally upregulated Gck, leading to reduced apoptosis and improved mitochondrial respiration and glycolysis in cardiomyocytes. ETS1 functioned as an upstream negative regulator of Hmbox1 transcription, and its overexpression was protective against cardiac I/R injury. CONCLUSIONS Our studies unravel a new role for the transcriptional repressor Hmbox1 in exercise-induced physiological cardiac growth. They also highlight the therapeutic potential of targeting Hmbox1 to improve myocardial survival and glucose metabolism after I/R injury.
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Affiliation(s)
- Yihua Bei
- Institute of Geriatrics (Shanghai University), Affiliated Nantong Hospital (Sixth People's Hospital of Nantong) and School of Life Science of Shanghai University, China (Y.B., Y.Z., J.Z., S.A., M.Y., M.H., W.Q., L.L., M.W., Z.H., J.G., C.L., J.X.)
- Joint International Research Laboratory of Biomaterials and Biotechnology in Organ Repair (Ministry of Education) (Y.B., Y.Z., J.Z., S.A., M.Y., M.H., W.Q., L.L., M.W., Z.H., J.G., C.L., J.X.), Shanghai University, China
- Cardiac Regeneration and Ageing Laboratory, Institute of Cardiovascular Sciences, Shanghai Engineering Research Center of Organ Repair, School of Medicine (Y.B., Y.Z., J.Z., S.A., M.Y., M.H., W.Q., L.L., M.W., Z.H., J.G., C.L., J.X.), Shanghai University, China
| | - Yujiao Zhu
- Institute of Geriatrics (Shanghai University), Affiliated Nantong Hospital (Sixth People's Hospital of Nantong) and School of Life Science of Shanghai University, China (Y.B., Y.Z., J.Z., S.A., M.Y., M.H., W.Q., L.L., M.W., Z.H., J.G., C.L., J.X.)
- Joint International Research Laboratory of Biomaterials and Biotechnology in Organ Repair (Ministry of Education) (Y.B., Y.Z., J.Z., S.A., M.Y., M.H., W.Q., L.L., M.W., Z.H., J.G., C.L., J.X.), Shanghai University, China
- Cardiac Regeneration and Ageing Laboratory, Institute of Cardiovascular Sciences, Shanghai Engineering Research Center of Organ Repair, School of Medicine (Y.B., Y.Z., J.Z., S.A., M.Y., M.H., W.Q., L.L., M.W., Z.H., J.G., C.L., J.X.), Shanghai University, China
| | - Jingwen Zhou
- Institute of Geriatrics (Shanghai University), Affiliated Nantong Hospital (Sixth People's Hospital of Nantong) and School of Life Science of Shanghai University, China (Y.B., Y.Z., J.Z., S.A., M.Y., M.H., W.Q., L.L., M.W., Z.H., J.G., C.L., J.X.)
- Joint International Research Laboratory of Biomaterials and Biotechnology in Organ Repair (Ministry of Education) (Y.B., Y.Z., J.Z., S.A., M.Y., M.H., W.Q., L.L., M.W., Z.H., J.G., C.L., J.X.), Shanghai University, China
- Cardiac Regeneration and Ageing Laboratory, Institute of Cardiovascular Sciences, Shanghai Engineering Research Center of Organ Repair, School of Medicine (Y.B., Y.Z., J.Z., S.A., M.Y., M.H., W.Q., L.L., M.W., Z.H., J.G., C.L., J.X.), Shanghai University, China
| | - Songwei Ai
- Institute of Geriatrics (Shanghai University), Affiliated Nantong Hospital (Sixth People's Hospital of Nantong) and School of Life Science of Shanghai University, China (Y.B., Y.Z., J.Z., S.A., M.Y., M.H., W.Q., L.L., M.W., Z.H., J.G., C.L., J.X.)
- Joint International Research Laboratory of Biomaterials and Biotechnology in Organ Repair (Ministry of Education) (Y.B., Y.Z., J.Z., S.A., M.Y., M.H., W.Q., L.L., M.W., Z.H., J.G., C.L., J.X.), Shanghai University, China
- Cardiac Regeneration and Ageing Laboratory, Institute of Cardiovascular Sciences, Shanghai Engineering Research Center of Organ Repair, School of Medicine (Y.B., Y.Z., J.Z., S.A., M.Y., M.H., W.Q., L.L., M.W., Z.H., J.G., C.L., J.X.), Shanghai University, China
| | - Jianhua Yao
- Department of Cardiology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, China (J.Y.)
| | - Mingming Yin
- Institute of Geriatrics (Shanghai University), Affiliated Nantong Hospital (Sixth People's Hospital of Nantong) and School of Life Science of Shanghai University, China (Y.B., Y.Z., J.Z., S.A., M.Y., M.H., W.Q., L.L., M.W., Z.H., J.G., C.L., J.X.)
- Joint International Research Laboratory of Biomaterials and Biotechnology in Organ Repair (Ministry of Education) (Y.B., Y.Z., J.Z., S.A., M.Y., M.H., W.Q., L.L., M.W., Z.H., J.G., C.L., J.X.), Shanghai University, China
- Cardiac Regeneration and Ageing Laboratory, Institute of Cardiovascular Sciences, Shanghai Engineering Research Center of Organ Repair, School of Medicine (Y.B., Y.Z., J.Z., S.A., M.Y., M.H., W.Q., L.L., M.W., Z.H., J.G., C.L., J.X.), Shanghai University, China
| | - Meiyu Hu
- Institute of Geriatrics (Shanghai University), Affiliated Nantong Hospital (Sixth People's Hospital of Nantong) and School of Life Science of Shanghai University, China (Y.B., Y.Z., J.Z., S.A., M.Y., M.H., W.Q., L.L., M.W., Z.H., J.G., C.L., J.X.)
- Joint International Research Laboratory of Biomaterials and Biotechnology in Organ Repair (Ministry of Education) (Y.B., Y.Z., J.Z., S.A., M.Y., M.H., W.Q., L.L., M.W., Z.H., J.G., C.L., J.X.), Shanghai University, China
- Cardiac Regeneration and Ageing Laboratory, Institute of Cardiovascular Sciences, Shanghai Engineering Research Center of Organ Repair, School of Medicine (Y.B., Y.Z., J.Z., S.A., M.Y., M.H., W.Q., L.L., M.W., Z.H., J.G., C.L., J.X.), Shanghai University, China
| | - Weitong Qi
- Institute of Geriatrics (Shanghai University), Affiliated Nantong Hospital (Sixth People's Hospital of Nantong) and School of Life Science of Shanghai University, China (Y.B., Y.Z., J.Z., S.A., M.Y., M.H., W.Q., L.L., M.W., Z.H., J.G., C.L., J.X.)
- Joint International Research Laboratory of Biomaterials and Biotechnology in Organ Repair (Ministry of Education) (Y.B., Y.Z., J.Z., S.A., M.Y., M.H., W.Q., L.L., M.W., Z.H., J.G., C.L., J.X.), Shanghai University, China
- Cardiac Regeneration and Ageing Laboratory, Institute of Cardiovascular Sciences, Shanghai Engineering Research Center of Organ Repair, School of Medicine (Y.B., Y.Z., J.Z., S.A., M.Y., M.H., W.Q., L.L., M.W., Z.H., J.G., C.L., J.X.), Shanghai University, China
| | - Michail Spanos
- Cardiovascular Division of the Massachusetts General Hospital and Harvard Medical School, Boston (M.S., G.L.)
| | - Lin Li
- Institute of Geriatrics (Shanghai University), Affiliated Nantong Hospital (Sixth People's Hospital of Nantong) and School of Life Science of Shanghai University, China (Y.B., Y.Z., J.Z., S.A., M.Y., M.H., W.Q., L.L., M.W., Z.H., J.G., C.L., J.X.)
- Joint International Research Laboratory of Biomaterials and Biotechnology in Organ Repair (Ministry of Education) (Y.B., Y.Z., J.Z., S.A., M.Y., M.H., W.Q., L.L., M.W., Z.H., J.G., C.L., J.X.), Shanghai University, China
- Cardiac Regeneration and Ageing Laboratory, Institute of Cardiovascular Sciences, Shanghai Engineering Research Center of Organ Repair, School of Medicine (Y.B., Y.Z., J.Z., S.A., M.Y., M.H., W.Q., L.L., M.W., Z.H., J.G., C.L., J.X.), Shanghai University, China
| | - Meng Wei
- Institute of Geriatrics (Shanghai University), Affiliated Nantong Hospital (Sixth People's Hospital of Nantong) and School of Life Science of Shanghai University, China (Y.B., Y.Z., J.Z., S.A., M.Y., M.H., W.Q., L.L., M.W., Z.H., J.G., C.L., J.X.)
- Joint International Research Laboratory of Biomaterials and Biotechnology in Organ Repair (Ministry of Education) (Y.B., Y.Z., J.Z., S.A., M.Y., M.H., W.Q., L.L., M.W., Z.H., J.G., C.L., J.X.), Shanghai University, China
- Cardiac Regeneration and Ageing Laboratory, Institute of Cardiovascular Sciences, Shanghai Engineering Research Center of Organ Repair, School of Medicine (Y.B., Y.Z., J.Z., S.A., M.Y., M.H., W.Q., L.L., M.W., Z.H., J.G., C.L., J.X.), Shanghai University, China
| | - Zhenzhen Huang
- Institute of Geriatrics (Shanghai University), Affiliated Nantong Hospital (Sixth People's Hospital of Nantong) and School of Life Science of Shanghai University, China (Y.B., Y.Z., J.Z., S.A., M.Y., M.H., W.Q., L.L., M.W., Z.H., J.G., C.L., J.X.)
- Joint International Research Laboratory of Biomaterials and Biotechnology in Organ Repair (Ministry of Education) (Y.B., Y.Z., J.Z., S.A., M.Y., M.H., W.Q., L.L., M.W., Z.H., J.G., C.L., J.X.), Shanghai University, China
- Cardiac Regeneration and Ageing Laboratory, Institute of Cardiovascular Sciences, Shanghai Engineering Research Center of Organ Repair, School of Medicine (Y.B., Y.Z., J.Z., S.A., M.Y., M.H., W.Q., L.L., M.W., Z.H., J.G., C.L., J.X.), Shanghai University, China
| | - Juan Gao
- Institute of Geriatrics (Shanghai University), Affiliated Nantong Hospital (Sixth People's Hospital of Nantong) and School of Life Science of Shanghai University, China (Y.B., Y.Z., J.Z., S.A., M.Y., M.H., W.Q., L.L., M.W., Z.H., J.G., C.L., J.X.)
- Joint International Research Laboratory of Biomaterials and Biotechnology in Organ Repair (Ministry of Education) (Y.B., Y.Z., J.Z., S.A., M.Y., M.H., W.Q., L.L., M.W., Z.H., J.G., C.L., J.X.), Shanghai University, China
- Cardiac Regeneration and Ageing Laboratory, Institute of Cardiovascular Sciences, Shanghai Engineering Research Center of Organ Repair, School of Medicine (Y.B., Y.Z., J.Z., S.A., M.Y., M.H., W.Q., L.L., M.W., Z.H., J.G., C.L., J.X.), Shanghai University, China
| | - Chang Liu
- Institute of Geriatrics (Shanghai University), Affiliated Nantong Hospital (Sixth People's Hospital of Nantong) and School of Life Science of Shanghai University, China (Y.B., Y.Z., J.Z., S.A., M.Y., M.H., W.Q., L.L., M.W., Z.H., J.G., C.L., J.X.)
- Joint International Research Laboratory of Biomaterials and Biotechnology in Organ Repair (Ministry of Education) (Y.B., Y.Z., J.Z., S.A., M.Y., M.H., W.Q., L.L., M.W., Z.H., J.G., C.L., J.X.), Shanghai University, China
- Cardiac Regeneration and Ageing Laboratory, Institute of Cardiovascular Sciences, Shanghai Engineering Research Center of Organ Repair, School of Medicine (Y.B., Y.Z., J.Z., S.A., M.Y., M.H., W.Q., L.L., M.W., Z.H., J.G., C.L., J.X.), Shanghai University, China
| | - Petra H van der Kraak
- Department of Pathology (P.H.v.d.K.), University Medical Center Utrecht, University Utrecht, The Netherlands
| | - Guoping Li
- Cardiovascular Division of the Massachusetts General Hospital and Harvard Medical School, Boston (M.S., G.L.)
| | - Zhiyong Lei
- Department of Cardiology, Laboratory of Experimental Cardiology (Z.L., J.P.G.S.), University Medical Center Utrecht, University Utrecht, The Netherlands
- Division Laboratory, Central Diagnosis Laboratory Research (Z.L.), University Medical Center Utrecht, University Utrecht, The Netherlands
| | - Joost P G Sluijter
- Department of Cardiology, Laboratory of Experimental Cardiology (Z.L., J.P.G.S.), University Medical Center Utrecht, University Utrecht, The Netherlands
- Utrecht Regenerative Medicine Center (J.P.G.S.), University Medical Center Utrecht, University Utrecht, The Netherlands
| | - Junjie Xiao
- Institute of Geriatrics (Shanghai University), Affiliated Nantong Hospital (Sixth People's Hospital of Nantong) and School of Life Science of Shanghai University, China (Y.B., Y.Z., J.Z., S.A., M.Y., M.H., W.Q., L.L., M.W., Z.H., J.G., C.L., J.X.)
- Joint International Research Laboratory of Biomaterials and Biotechnology in Organ Repair (Ministry of Education) (Y.B., Y.Z., J.Z., S.A., M.Y., M.H., W.Q., L.L., M.W., Z.H., J.G., C.L., J.X.), Shanghai University, China
- Cardiac Regeneration and Ageing Laboratory, Institute of Cardiovascular Sciences, Shanghai Engineering Research Center of Organ Repair, School of Medicine (Y.B., Y.Z., J.Z., S.A., M.Y., M.H., W.Q., L.L., M.W., Z.H., J.G., C.L., J.X.), Shanghai University, China
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Wang H, Ma T, Zhang X, Chen W, Lan Y, Kuang G, Hsu SJ, He Z, Chen Y, Stewart J, Bhattacharjee A, Luo Z, Price C, Feng X. CTC1 OB-B interaction with TPP1 terminates telomerase and prevents telomere overextension. Nucleic Acids Res 2023; 51:4914-4928. [PMID: 37021555 PMCID: PMC10250220 DOI: 10.1093/nar/gkad237] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 03/16/2023] [Accepted: 03/31/2023] [Indexed: 04/07/2023] Open
Abstract
CST (CTC1-STN1-TEN1) is a telomere associated complex that binds ssDNA and is required for multiple steps in telomere replication, including termination of G-strand extension by telomerase and synthesis of the complementary C-strand. CST contains seven OB-folds which appear to mediate CST function by modulating CST binding to ssDNA and the ability of CST to recruit or engage partner proteins. However, the mechanism whereby CST achieves its various functions remains unclear. To address the mechanism, we generated a series of CTC1 mutants and studied their effect on CST binding to ssDNA and their ability to rescue CST function in CTC1-/- cells. We identified the OB-B domain as a key determinant of telomerase termination but not C-strand synthesis. CTC1-ΔB expression rescued C-strand fill-in, prevented telomeric DNA damage signaling and growth arrest. However, it caused progressive telomere elongation and the accumulation of telomerase at telomeres, indicating an inability to limit telomerase action. The CTC1-ΔB mutation greatly reduced CST-TPP1 interaction but only modestly affected ssDNA binding. OB-B point mutations also weakened TPP1 association, with the deficiency in TPP1 interaction tracking with an inability to limit telomerase action. Overall, our results indicate that CTC1-TPP1 interaction plays a key role in telomerase termination.
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Affiliation(s)
- Huan Wang
- Department of Pediatrics, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
- Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Tengfei Ma
- Department of Pediatrics, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
- Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Xiaotong Zhang
- Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Wei Chen
- Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Yina Lan
- Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Guotao Kuang
- Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Shih-Jui Hsu
- Department of Cancer Biology, University of Cincinnati, Cincinnati, OH, USA
| | - Zibin He
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Yuxi Chen
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Jason Stewart
- Department of Biological Sciences, University of South Carolina, Columbia, SC, USA
| | | | - Zhenhua Luo
- Department of Pediatrics, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
- Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Carolyn Price
- Department of Cancer Biology, University of Cincinnati, Cincinnati, OH, USA
| | - Xuyang Feng
- Department of Pediatrics, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
- Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
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Jezek M, Sun W, Negesse MY, Smith ZM, Orosz A, Green EM. Set1 regulates telomere function via H3K4 methylation-dependent and -independent pathways and calibrates the abundance of telomere maintenance factors. Mol Biol Cell 2023; 34:ar6. [PMID: 36416860 PMCID: PMC9816643 DOI: 10.1091/mbc.e22-06-0213] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 10/05/2022] [Accepted: 11/17/2022] [Indexed: 11/24/2022] Open
Abstract
Set1 is an H3K4 methyltransferase that comprises the catalytic subunit of the COMPASS complex and has been implicated in transcription, DNA repair, cell cycle control, and numerous other genomic functions. Set1 also promotes proper telomere maintenance, as cells lacking Set1 have short telomeres and disrupted subtelomeric gene repression; however, the precise role for Set1 in these processes has not been fully defined. In this study, we have tested mutants of Set1 and the COMPASS complex that differentially alter H3K4 methylation status, and we have attempted to separate catalytic and noncatalytic functions of Set1. Our data reveal that Set1-dependent subtelomeric gene repression relies on its catalytic activity toward H3K4, whereas telomere length is regulated by Set1 catalytic activity but likely independent of the H3K4 substrate. Furthermore, we uncover a role for Set1 in calibrating the abundance of critical telomere maintenance proteins, including components of the telomerase holoenzyme and members of the telomere capping CST (Cdc13-Stn1-Ten1) complex, through both transcriptional and posttranscriptional pathways. Altogether, our data provide new insights into the H3K4 methylation-dependent and -independent roles for Set1 in telomere maintenance in yeast and shed light on possible roles for Set1-related methyltransferases in other systems.
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Affiliation(s)
- Meagan Jezek
- Department of Biological Sciences, University of Maryland Baltimore County, Baltimore, MD 21250
| | - Winny Sun
- Department of Biological Sciences, University of Maryland Baltimore County, Baltimore, MD 21250
| | - Maraki Y. Negesse
- Department of Biological Sciences, University of Maryland Baltimore County, Baltimore, MD 21250
| | - Zachary M. Smith
- Department of Biological Sciences, University of Maryland Baltimore County, Baltimore, MD 21250
| | - Alexander Orosz
- Department of Biological Sciences, University of Maryland Baltimore County, Baltimore, MD 21250
| | - Erin M. Green
- Department of Biological Sciences, University of Maryland Baltimore County, Baltimore, MD 21250
- Marlene and Stewart Greenebaum Comprehensive Cancer Center, University of Maryland School of Medicine, Baltimore, MD 21201
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Identification of Key Proteins from the Alternative Lengthening of Telomeres-Associated Promyelocytic Leukemia Nuclear Bodies Pathway. BIOLOGY 2022; 11:biology11020185. [PMID: 35205052 PMCID: PMC8868596 DOI: 10.3390/biology11020185] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/12/2021] [Revised: 01/07/2022] [Accepted: 01/11/2022] [Indexed: 12/26/2022]
Abstract
Simple Summary The alternative lengthening of telomeres is a telomere maintenance mechanism used by some cancer types to elongate their telomeres without the aid of telomerase. This mechanism contributes to the proliferation and immortality of cancer cells. One of the hallmarks of this mechanism is the interaction with promyelocytic leukemia nuclear bodies, which are suspected to be the key places where telomere extension occurs. Despite the discovery of some mechanisms, elements, key genes, and proteins from the pathway, the alternative lengthening of telomeres mechanism is still poorly understood, and it is highly associated with a poor prognosis. In this study, we combined multiomics approaches with genomic, transcriptomic, and proteomic analyses of 71 genes/proteins related to promyelocytic leukemia nuclear bodies in more than 10,000 cancer samples from The Cancer Genome Atlas Consortium. As a result, 13 key proteins were proposed as candidates for future experimental studies that will validate these proteins as therapeutic markers, which will improve the understanding and treatment of these type of cancers. Abstract Alternative lengthening of telomeres-associated promyelocytic leukemia nuclear bodies (APBs) are a hallmark of telomere maintenance. In the last few years, APBs have been described as the main place where telomeric extension occurs in ALT-positive cancer cell lines. A different set of proteins have been associated with APBs function, however, the molecular mechanisms behind their assembly, colocalization, and clustering of telomeres, among others, remain unclear. To improve the understanding of APBs in the ALT pathway, we integrated multiomics analyses to evaluate genomic, transcriptomic and proteomic alterations, and functional interactions of 71 APBs-related genes/proteins in 32 Pan-Cancer Atlas studies from The Cancer Genome Atlas Consortium (TCGA). As a result, we identified 13 key proteins which showed distinctive mutations, interactions, and functional enrichment patterns across all the cancer types and proposed this set of proteins as candidates for future ex vivo and in vivo analyses that will validate these proteins to improve the understanding of the ALT pathway, fill the current research gap about APBs function and their role in ALT, and be considered as potential therapeutic targets for the diagnosis and treatment of ALT-positive cancers in the future.
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Bader AS, Bushell M. Damage-Net: A program for DNA repair meta-analysis identifies a network of novel repair genes that facilitate cancer evolution. DNA Repair (Amst) 2021; 105:103158. [PMID: 34147942 PMCID: PMC8385418 DOI: 10.1016/j.dnarep.2021.103158] [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: 06/19/2020] [Revised: 04/07/2021] [Accepted: 06/08/2021] [Indexed: 11/22/2022]
Abstract
The advent of genome-wide methods for identifying novel components in biological processes including CRISPR screens and proteomic studies, has transformed the research landscape within the biological sciences. However, each study normally investigates a single aspect of a process without integration of other published datasets. Here, we present Damage-Net, a program with a curated database of published results from a broad range of studies investigating DNA repair, that facilitates simple and quick meta-analysis. Users can incorporate their own datasets for analysis, and query genes of interest in the database. Importantly, this program also allows users to examine the correlation of genes of interest with pan-cancer patient survival and mutational burden effects. Interrogating these datasets revealed a network of genes that associated with cancer progression in adrenocortical carcinoma via facilitating mutational burden, ultimately contributing substantially to adrenocortical carcinoma's poor prognosis. Download at www.damage-net.co.uk.
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Affiliation(s)
- Aldo S Bader
- Cancer Research UK Beatson Institute, Glasgow, G61 1BD, UK.
| | - Martin Bushell
- Cancer Research UK Beatson Institute, Glasgow, G61 1BD, UK; Institute of Cancer Sciences, University of Glasgow, Garscube Estate, Switchback Road, Glasgow, G61 1QH, UK.
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Wang C, Songyang Z, Huang Y. TRIM28 inhibits alternative lengthening of telomere phenotypes by protecting SETDB1 from degradation. Cell Biosci 2021; 11:149. [PMID: 34330324 PMCID: PMC8325274 DOI: 10.1186/s13578-021-00660-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Accepted: 07/15/2021] [Indexed: 01/04/2023] Open
Abstract
Background About 10–15% of tumor cells extend telomeres through the alternative lengthening of telomeres (ALT) mechanism, which is a recombination-dependent replication pathway. It is generally believed that ALT cells are related to the chromatin modification of telomeres. However, the mechanism of ALT needs to be further explored. Results Here we found that TRIM28/KAP1 is preferentially located on the telomeres of ALT cells and interacts with telomeric shelterin/telosome complex. Knocking down TRIM28 in ALT cells delayed cell growth, decreased the level of C-circle which is one kind of extrachromosomal circular telomeric DNA, increased the frequency of ALT-associated promyelocytic leukemia bodies (APBs), led to telomere prolongation and increased the telomere sister chromatid exchange in ALT cells. Mechanistically, TRIM28 protects telomere histone methyltransferase SETDB1 from degradation, thus maintaining the H3K9me3 heterochromatin state of telomere DNA. Conclusions Our work provides a model that TRIM28 inhibits alternative lengthening of telomere phenotypes by protecting SETDB1 from degradation. In general, our results reveal the mechanism of telomere heterochromatin maintenance and its effect on ALT, and TRIM28 may serve as a target for the treatment of ALT tumor cells. Supplementary Information The online version contains supplementary material available at 10.1186/s13578-021-00660-y.
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Affiliation(s)
- Chuanle Wang
- MOE Key Laboratory of Gene Function and Regulation, Guangzhou Key Laboratory of Healthy Aging Research and SYSU-BCM Joint Research Center, School of Life Sciences, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Zhou Songyang
- MOE Key Laboratory of Gene Function and Regulation, Guangzhou Key Laboratory of Healthy Aging Research and SYSU-BCM Joint Research Center, School of Life Sciences, Sun Yat-Sen University, Guangzhou, 510275, China.,Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China.,Verna and Marrs Mclean Department of Biochemistry and Molecular Biology, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA.,Bioland Laboratory (Guangzhou Regenerative Medicine and Health Guangdong Laboratory), Guangzhou, 510005, China
| | - Yan Huang
- MOE Key Laboratory of Gene Function and Regulation, Guangzhou Key Laboratory of Healthy Aging Research and SYSU-BCM Joint Research Center, School of Life Sciences, Sun Yat-Sen University, Guangzhou, 510275, China.
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7
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Lee JH, Hong J, Zhang Z, de la Peña Avalos B, Proietti CJ, Deamicis AR, Guzmán G P, Lam HM, Garcia J, Roudier MP, Sisk AE, De La Rosa R, Vu K, Yang M, Liao Y, Scheirer J, Pechacek D, Yadav P, Rao MK, Zheng S, Johnson-Pais TL, Leach RJ, Elizalde PV, Dray E, Xu K. Regulation of telomere homeostasis and genomic stability in cancer by N 6-adenosine methylation (m 6A). SCIENCE ADVANCES 2021; 7:7/31/eabg7073. [PMID: 34321211 PMCID: PMC8318370 DOI: 10.1126/sciadv.abg7073] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2021] [Accepted: 06/11/2021] [Indexed: 05/04/2023]
Abstract
The role of RNA methylation on N 6-adenosine (m6A) in cancer has been acknowledged, but the underlying mechanisms remain obscure. Here, we identified homeobox containing 1 (HMBOX1) as an authentic target mRNA of m6A machinery, which is highly methylated in malignant cells compared to the normal counterparts and subject to expedited degradation upon the modification. m6A-mediated down-regulation of HMBOX1 causes telomere dysfunction and inactivation of p53 signaling, which leads to chromosome abnormalities and aggressive phenotypes. CRISPR-based, m6A-editing tools further prove that the methyl groups on HMBOX1 per se contribute to the generation of altered cancer genome. In multiple types of human cancers, expression of the RNA methyltransferase METTL3 is negatively correlated with the telomere length but favorably with fractions of altered cancer genome, whereas HMBOX1 mRNA levels show the opposite patterns. Our work suggests that the cancer-driving genomic alterations may potentially be fixed by rectifying particular epitranscriptomic program.
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Affiliation(s)
- Ji Hoon Lee
- Department of Molecular Medicine, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA
| | - Juyeong Hong
- Department of Molecular Medicine, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA
| | - Zhao Zhang
- Department of Molecular Medicine, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA
| | - Bárbara de la Peña Avalos
- Department of Biochemistry and Structural Biology, University of Texas Health San Antonio, San Antonio, TX 78229, USA
- Mays Cancer Center, UT Health San Antonio MD Anderson, San Antonio, TX 78229, USA
| | - Cecilia J Proietti
- Laboratory of Molecular Mechanisms of Carcinogenesis and Molecular Endocrinology, Instituto de Biología y Medicina Experimental (IBYME), CONICET, Buenos Aires C1428ADN, Argentina
| | - Agustina Roldán Deamicis
- Laboratory of Molecular Mechanisms of Carcinogenesis and Molecular Endocrinology, Instituto de Biología y Medicina Experimental (IBYME), CONICET, Buenos Aires C1428ADN, Argentina
| | - Pablo Guzmán G
- Departamento de Anatomía Patológica (BIOREN), Universidad de La Frontera, Temuco Casilla 54-D, Chile
| | - Hung-Ming Lam
- Department of Urology, University of Washington, Seattle, WA 98195, USA
| | - Jose Garcia
- Department of Urology, University of Washington, Seattle, WA 98195, USA
| | - Martine P Roudier
- Department of Urology, University of Washington, Seattle, WA 98195, USA
| | - Anthony E Sisk
- Department of Pathology, David Geffen School of Medicine, University of California at Los Angeles, Los Angeles, CA 90095, USA
| | - Richard De La Rosa
- Department of Molecular Medicine, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA
| | - Kevin Vu
- Department of Medical Education, Joe R. and Teresa Lozano Long School of Medicine, San Antonio, TX 78229, USA
| | - Mei Yang
- Department of Molecular Medicine, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA
| | - Yiji Liao
- Department of Molecular Medicine, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA
| | - Jessica Scheirer
- Department of Molecular Medicine, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA
| | - Douglas Pechacek
- Department of Molecular Medicine, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA
| | - Pooja Yadav
- Department of Cell Systems and Anatomy, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA
- Greehey Children's Cancer Research Institute, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA
| | - Manjeet K Rao
- Department of Cell Systems and Anatomy, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA
- Greehey Children's Cancer Research Institute, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA
| | - Siyuan Zheng
- Greehey Children's Cancer Research Institute, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA
- Department of Population Health Sciences, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA
| | - Teresa L Johnson-Pais
- Department of Urology, University of Texas Health Sciences Center at San Antonio, San Antonio, TX 78229, USA
| | - Robin J Leach
- Mays Cancer Center, UT Health San Antonio MD Anderson, San Antonio, TX 78229, USA
- Department of Cell Systems and Anatomy, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA
| | - Patricia V Elizalde
- Laboratory of Molecular Mechanisms of Carcinogenesis and Molecular Endocrinology, Instituto de Biología y Medicina Experimental (IBYME), CONICET, Buenos Aires C1428ADN, Argentina
| | - Eloïse Dray
- Department of Biochemistry and Structural Biology, University of Texas Health San Antonio, San Antonio, TX 78229, USA
- Mays Cancer Center, UT Health San Antonio MD Anderson, San Antonio, TX 78229, USA
| | - Kexin Xu
- Department of Molecular Medicine, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA.
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8
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Yan Y, Guo G, Huang J, Gao M, Zhu Q, Zeng S, Gong Z, Xu Z. Current understanding of extrachromosomal circular DNA in cancer pathogenesis and therapeutic resistance. J Hematol Oncol 2020; 13:124. [PMID: 32928268 PMCID: PMC7491193 DOI: 10.1186/s13045-020-00960-9] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Accepted: 09/03/2020] [Indexed: 02/08/2023] Open
Abstract
Extrachromosomal circular DNA was recently found to be particularly abundant in multiple human cancer cells, although its frequency varies among different tumor types. Elevated levels of extrachromosomal circular DNA have been considered an effective biomarker of cancer pathogenesis. Multiple reports have demonstrated that the amplification of oncogenes and therapeutic resistance genes located on extrachromosomal DNA is a frequent event that drives intratumoral genetic heterogeneity and provides a potential evolutionary advantage. This review highlights the current understanding of the extrachromosomal circular DNA present in the tissues and circulation of patients with advanced cancers and provides a detailed discussion of their substantial roles in tumor regulation. Confirming the presence of cancer-related extrachromosomal circular DNA would provide a putative testing strategy for the precision diagnosis and treatment of human malignancies in clinical practice.
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Affiliation(s)
- Yuanliang Yan
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China
- Department of Oncology, Mayo Clinic, Rochester, MN, 55905, USA
| | - Guijie Guo
- Department of Oncology, Mayo Clinic, Rochester, MN, 55905, USA
| | - Jinzhou Huang
- Department of Oncology, Mayo Clinic, Rochester, MN, 55905, USA
| | - Ming Gao
- Department of Oncology, Mayo Clinic, Rochester, MN, 55905, USA
| | - Qian Zhu
- Department of Oncology, Mayo Clinic, Rochester, MN, 55905, USA
| | - Shuangshuang Zeng
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China
| | - Zhicheng Gong
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China
| | - Zhijie Xu
- Department of Pathology, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China.
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China.
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9
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Shi G, Hu Y, Zhu X, Jiang Y, Pang J, Wang C, Huang W, Zhao Y, Ma W, Liu D, Huang J, Songyang Z. A critical role of telomere chromatin compaction in ALT tumor cell growth. Nucleic Acids Res 2020; 48:6019-6031. [PMID: 32379321 PMCID: PMC7293046 DOI: 10.1093/nar/gkaa224] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 03/17/2020] [Accepted: 04/18/2020] [Indexed: 01/15/2023] Open
Abstract
ALT tumor cells often contain abundant DNA damage foci at telomeres and rely on the alternative lengthening of telomeres (ALT) mechanism to maintain their telomeres. How the telomere chromatin is regulated and maintained in these cells remains largely unknown. In this study, we present evidence that heterochromatin protein 1 binding protein 3 (HP1BP3) can localize to telomeres and is particularly enriched on telomeres in ALT cells. HP1BP3 inhibition led to preferential growth inhibition of ALT cells, which was accompanied by telomere chromatin decompaction, increased presence of C-circles, more pronounced ALT-associated phenotypes and elongated telomeres. Furthermore, HP1BP3 appeared to participate in regulating telomere histone H3K9me3 epigenetic marks. Taken together, our data suggest that HP1BP3 functions on telomeres to maintain telomere chromatin and represents a novel target for inhibiting ALT cancer cells.
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Affiliation(s)
- Guang Shi
- MOE Key Laboratory of Gene Function and Regulation, Guangzhou Key Laboratory of Healthy Aging Research and SYSU-BCM Joint Research Center, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China.,Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, China
| | - Yang Hu
- MOE Key Laboratory of Gene Function and Regulation, Guangzhou Key Laboratory of Healthy Aging Research and SYSU-BCM Joint Research Center, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
| | - Xing Zhu
- MOE Key Laboratory of Gene Function and Regulation, Guangzhou Key Laboratory of Healthy Aging Research and SYSU-BCM Joint Research Center, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
| | - Yuanling Jiang
- MOE Key Laboratory of Gene Function and Regulation, Guangzhou Key Laboratory of Healthy Aging Research and SYSU-BCM Joint Research Center, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
| | - Junjie Pang
- MOE Key Laboratory of Gene Function and Regulation, Guangzhou Key Laboratory of Healthy Aging Research and SYSU-BCM Joint Research Center, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
| | - Chuanle Wang
- MOE Key Laboratory of Gene Function and Regulation, Guangzhou Key Laboratory of Healthy Aging Research and SYSU-BCM Joint Research Center, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
| | - Wenjun Huang
- MOE Key Laboratory of Gene Function and Regulation, Guangzhou Key Laboratory of Healthy Aging Research and SYSU-BCM Joint Research Center, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
| | - Yong Zhao
- MOE Key Laboratory of Gene Function and Regulation, Guangzhou Key Laboratory of Healthy Aging Research and SYSU-BCM Joint Research Center, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
| | - Wenbin Ma
- MOE Key Laboratory of Gene Function and Regulation, Guangzhou Key Laboratory of Healthy Aging Research and SYSU-BCM Joint Research Center, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
| | - Dan Liu
- Verna and Marrs Mclean Department of Biochemistry and Molecular Biology, Baylor College of Medicine, One Baylor Plaza, Houston, TX, USA 77030
| | - Junjiu Huang
- MOE Key Laboratory of Gene Function and Regulation, Guangzhou Key Laboratory of Healthy Aging Research and SYSU-BCM Joint Research Center, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China.,Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, China.,State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060, China
| | - Zhou Songyang
- MOE Key Laboratory of Gene Function and Regulation, Guangzhou Key Laboratory of Healthy Aging Research and SYSU-BCM Joint Research Center, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China.,Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, China.,Verna and Marrs Mclean Department of Biochemistry and Molecular Biology, Baylor College of Medicine, One Baylor Plaza, Houston, TX, USA 77030.,State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060, China
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10
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Ma H, Su L, He X, Miao J. Loss of HMBOX1 promotes LPS-induced apoptosis and inhibits LPS-induced autophagy of vascular endothelial cells in mouse. Apoptosis 2020; 24:946-957. [PMID: 31583496 DOI: 10.1007/s10495-019-01572-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Our previous study revealed that Homeobox containing 1 (HMBOX1), essential for the survival of vascular endothelial cells (VECs), was involved in the progression of atherosclerosis. Knockdown of HMBOX1 promoted apoptosis and inhibited autophagy through regulating intracellular free zinc level in cultured VECs. In current study, in order to investigate the roles of HMBOX1 in vivo and in endothelium, we generated a knockout (KO) mouse for HMBOX1 by using transcription activator-like effector nucleases (TALENs) technology. Herein, we reported that the protein level of HMBOX1 was gradually increased during mouse development. The HMBOX1 KO mouse was viable and fertile. There existed no differences in apoptosis and autophagy of aortic endothelial cells between wild type and KO mouse. Whereas, loss of HMBOX1 promoted apoptosis and inhibited autophagy of aortic endothelial cells under lipopolysaccharide (LPS) stimulation in mouse. We also demonstrated that HMBOX1 deletion had no influence on the secretion of inflammatory cytokines TNF-α and IL-6. Moreover, overexpression or knockdown of HMBOX1 failed to regulate multiple pro-apoptotic genes expression in vitro. In conclusion, HMBOX1 participated in the functional maintenance of mouse aortic endothelial cells, the aortic endothelial cells of HMBOX1 KO mouse showed increased apoptosis and decreased autophagy with LPS treatment.
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Affiliation(s)
- HanLin Ma
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology, School of Life Science, Shandong University, Qingdao, 266237, People's Republic of China.,Department of Obstetrics and Gynecology, Qilu Hospital, Shandong University, Jinan, 250012, People's Republic of China
| | - Le Su
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology, School of Life Science, Shandong University, Qingdao, 266237, People's Republic of China
| | - XiaoYing He
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology, School of Life Science, Shandong University, Qingdao, 266237, People's Republic of China
| | - JunYing Miao
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology, School of Life Science, Shandong University, Qingdao, 266237, People's Republic of China. .,The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Health, Shandong University Qilu Hospital, Jinan, 250012, People's Republic of China.
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11
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Purification and enrichment of specific chromatin loci. Nat Methods 2020; 17:380-389. [PMID: 32152500 DOI: 10.1038/s41592-020-0765-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Accepted: 01/29/2020] [Indexed: 12/20/2022]
Abstract
Understanding how chromatin is regulated is essential to fully grasp genome biology, and establishing the locus-specific protein composition is a major step toward this goal. Here we explain why the isolation and analysis of a specific chromatin segment are technically challenging, independently of the method. We then describe the published strategies and discuss their advantages and limitations. We conclude by discussing why significant technology developments are required to unambiguously describe the composition of small single loci.
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12
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Wieczór M, Czub J. Telomere uncapping by common oxidative guanine lesions: Insights from atomistic models. Free Radic Biol Med 2020; 148:162-169. [PMID: 31926882 DOI: 10.1016/j.freeradbiomed.2020.01.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Revised: 01/02/2020] [Accepted: 01/05/2020] [Indexed: 12/15/2022]
Abstract
Oxidative damage to DNA is widely known to contribute to aging and disease. This relationship has been extensively studied for telomeres - structures that cap chromosome ends - due to their role in cell proliferation and senescence, and exceptional susceptibility to oxidation. Indeed, the repetitive telomeric DNA sequence contains the 5'-GGG-3' motif that has the lowest ionization potential of all trinucleotides. Accordingly, experiments consistently show that telomeric oxidative lesions are more abundant and persistent than elsewhere in the genome. This led to a hypothesis that telomeres act as sensors of prolonged oxidative stress and prevent carcinogenesis, as disruption of telomeric integrity triggers senescence or apoptosis. Here, we use atomistic alchemical Molecular Dynamics simulations to perform a combinatorial assessment of changes in DNA binding affinity of telomeric proteins induced by oxidative guanine lesions. We rank lesions by their effect on telomere integrity, as well as telomeric proteins by their sensitivity to DNA oxidation. While the binding of most proteins is abolished by DNA oxidation, HOT1 emerges as a notable exception, suggesting its potential role in sensing of oxidative damage. Through statistical analysis and free energy decomposition, we also identify common trends in structural responses of protein-DNA complexes that contribute to decreased binding affinity.
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Affiliation(s)
- Miłosz Wieczór
- Department of Physical Chemistry, Gdansk University of Technology, Gdańsk, Poland.
| | - Jacek Czub
- Department of Physical Chemistry, Gdansk University of Technology, Gdańsk, Poland.
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13
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Identification of C2CD4A as a human diabetes susceptibility gene with a role in β cell insulin secretion. Proc Natl Acad Sci U S A 2019; 116:20033-20042. [PMID: 31527256 DOI: 10.1073/pnas.1904311116] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Fine mapping and validation of genes causing β cell failure from susceptibility loci identified in type 2 diabetes genome-wide association studies (GWAS) poses a significant challenge. The VPS13C-C2CD4A-C2CD4B locus on chromosome 15 confers diabetes susceptibility in every ethnic group studied to date. However, the causative gene is unknown. FoxO1 is involved in the pathogenesis of β cell dysfunction, but its link to human diabetes GWAS has not been explored. Here we generated a genome-wide map of FoxO1 superenhancers in chemically identified β cells using 2-photon live-cell imaging to monitor FoxO1 localization. When parsed against human superenhancers and GWAS-derived diabetes susceptibility alleles, this map revealed a conserved superenhancer in C2CD4A, a gene encoding a β cell/stomach-enriched nuclear protein of unknown function. Genetic ablation of C2cd4a in β cells of mice phenocopied the metabolic abnormalities of human carriers of C2CD4A-linked polymorphisms, resulting in impaired insulin secretion during glucose tolerance tests as well as hyperglycemic clamps. C2CD4A regulates glycolytic genes, and notably represses key β cell "disallowed" genes, such as lactate dehydrogenase A We propose that C2CD4A is a transcriptional coregulator of the glycolytic pathway whose dysfunction accounts for the diabetes susceptibility associated with the chromosome 15 GWAS locus.
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14
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Luo Z, Wang W, Li F, Songyang Z, Feng X, Xin C, Dai Z, Xiong Y. Pan-cancer analysis identifies telomerase-associated signatures and cancer subtypes. Mol Cancer 2019; 18:106. [PMID: 31179925 PMCID: PMC6556968 DOI: 10.1186/s12943-019-1035-x] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Accepted: 05/29/2019] [Indexed: 01/09/2023] Open
Abstract
Background Cancer cells become immortalized through telomere maintenance mechanisms, such as telomerase reverse transcriptase (TERT) activation. In addition to maintaining telomere length, TERT activates manifold cell survival signaling pathways. However, telomerase-associated gene signatures in cancer remain elusive. Methods We performed a systematic analysis of TERT high (TERThigh) and low (TERTlow) cancers using multidimensional data from The Cancer Genome Atlas (TCGA). Multidimensional data were analyzed by propensity score matching weight algorithm. Coexpression networks were constructed by weight gene coexpression network analysis (WGCNA). Random forest classifiers were generated to identify cancer subtypes. Results The TERThigh-specific mRNA expression signature is associated with cell cycle-related coexpression modules across cancer types. Experimental screening of hub genes in the cell cycle module suggested TPX2 and EXO1 as potential regulators of telomerase activity and cell survival. MiRNA analysis revealed that the TERThigh-specific miR-17-92 cluster can target biological processes enriched in TERTlow cancer and that its expression is negatively correlated with the tumor/normal telomere length ratio. Intriguingly, TERThigh cancers tend to have mutations in extracellular matrix organization genes and amplify MAPK signaling. By mining the clinical actionable gene database, we uncovered a number of TERThigh-specific somatic mutations, amplifications and high expression genes containing therapeutic targets. Finally, a random forest classifier integrating telomerase-associated multi-omics signatures identifies two cancer subtypes showed profound differences in telomerase activity and patient survival. Conclusions In summary, our results depict a telomerase-associated molecular landscape in cancers and provide therapeutic opportunities for cancer treatment. Electronic supplementary material The online version of this article (10.1186/s12943-019-1035-x) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Zhenhua Luo
- Key Laboratory of Gene Engineering of the Ministry of Education and State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou, 510006, China.,Division of Gastroenterology, Hepatology and Nutrition, Cincinnati Children's Hospital Medical Center and the Department of Pediatrics Cincinnati, Ohio, 45229, USA
| | - Weixu Wang
- College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, China
| | - Feng Li
- Key Laboratory of Gene Engineering of the Ministry of Education and State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou, 510006, China
| | - Zhou Songyang
- Key Laboratory of Gene Engineering of the Ministry of Education and State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou, 510006, China.,Verna and Marrs Mclean Department of Biochemistry and Molecular Biology, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA
| | - Xuyang Feng
- Department of Cancer Biology, University of Cincinnati, Cincinnati, OH, 45230, USA.,The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510275, China
| | - Changchang Xin
- Key Laboratory of Gene Engineering of the Ministry of Education and State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou, 510006, China
| | - Zhiming Dai
- School of Data and Computer Science, Sun Yat-Sen University, Guangzhou, 510006, China.
| | - Yuanyan Xiong
- Key Laboratory of Gene Engineering of the Ministry of Education and State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou, 510006, China.
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15
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Diao N, Li Y, Yang J, Jin C, Meng X, Jiao W, Feng J, Liu Z, Lu N. High expression of HMBOX1 contributes to poor prognosis of gastric cancer by promoting cell proliferation and migration. Biomed Pharmacother 2019; 115:108867. [PMID: 31005794 DOI: 10.1016/j.biopha.2019.108867] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Revised: 03/24/2019] [Accepted: 04/09/2019] [Indexed: 02/06/2023] Open
Abstract
Homeobox-containing 1 (HMBOX1) has been reported to be associated with biological characteristics of some tumors, but its roles in gastric cancer have never been reported. In the present study, we found that HMBOX1 expression was significantly upregulated in gastric cancer tissues and cell lines and correlated with the TNM stage, lymph-node metastatic and the overall survival (OS) of patients of gastric cancer. The overexpression of HMBOX1 in gastric cancer cells enhanced cell proliferation by accelerating cell cycle, induced cell migration. In contrast, silencing HMBOX1 inhibited these processes. And the expression of HMBOX1 was related with the expression of vascular endothelial growth factor receptor (VEGFR), transforming growth factor-β (TGF-β) and CD133. What's more, we found that the expression of CD133 had a significantly positive correlation with HMBOX1 in gastric cancer tissues, and the co-expression of HMBOX1 and CD133 was significantly correlated with poor prognosis of gastric cancer patients, especially for patients at III and IV stage. In conclusion, HMBOX1 was upregulated in gastric cancer and correlated with gastric cancer cell proliferation and migration. Moreover, HMBOX1 combined CD133 might be useful to predict survival of patients with advanced gastric cancer.
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Affiliation(s)
- Nannan Diao
- Institute of Diagnostics, School of Medicine, Shandong University, Ji'nan, Shandong, China; Department of Clinical Laboratory, Shanghai Skin Disease Hospital, Shanghai, China
| | - Yuzheng Li
- Institute of Yantai, China Agricultural University, Beijing, China
| | - Jinling Yang
- Institute of Diagnostics, School of Medicine, Shandong University, Ji'nan, Shandong, China
| | - Chengjuan Jin
- Department of Obstetrics and Gynecology, Qilu Hospital of Shandong University, Ji'nan, Shandong, China; Key Laboratory of Gynecologic Oncology of Shandong Province, Qilu Hospital, Shandong University, Ji'nan, Shandong, China
| | - Xiaohui Meng
- Institute of Diagnostics, School of Medicine, Shandong University, Ji'nan, Shandong, China
| | - Wenlin Jiao
- National Research Center for Assisted Reproductive Technology and Reproduction Genetics, Ji'nan, Shandong, China
| | - Jinbo Feng
- Department of Obstetrics and Gynecology, Qilu Hospital of Shandong University, Ji'nan, Shandong, China; Key Laboratory of Gynecologic Oncology of Shandong Province, Qilu Hospital, Shandong University, Ji'nan, Shandong, China
| | - Zhenping Liu
- Department of Obstetrics and Gynecology, Qilu Hospital of Shandong University, Ji'nan, Shandong, China; Key Laboratory of Gynecologic Oncology of Shandong Province, Qilu Hospital, Shandong University, Ji'nan, Shandong, China
| | - Nan Lu
- Institute of Diagnostics, School of Medicine, Shandong University, Ji'nan, Shandong, China.
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16
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Li F, Kim H, Ji Z, Zhang T, Chen B, Ge Y, Hu Y, Feng X, Han X, Xu H, Zhang Y, Yu H, Liu D, Ma W, Songyang Z. The BUB3-BUB1 Complex Promotes Telomere DNA Replication. Mol Cell 2019; 70:395-407.e4. [PMID: 29727616 DOI: 10.1016/j.molcel.2018.03.032] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2017] [Revised: 02/09/2018] [Accepted: 03/27/2018] [Indexed: 01/02/2023]
Abstract
Telomeres and telomere-binding proteins form complex secondary nucleoprotein structures that are critical for genome integrity but can present serious challenges during telomere DNA replication. It remains unclear how telomere replication stress is resolved during S phase. Here, we show that the BUB3-BUB1 complex, a component in spindle assembly checkpoint, binds to telomeres during S phase and promotes telomere DNA replication. Loss of the BUB3-BUB1 complex results in telomere replication defects, including fragile and shortened telomeres. We also demonstrate that the telomere-binding ability of BUB3 and kinase activity of BUB1 are indispensable to BUB3-BUB1 function at telomeres. TRF2 targets BUB1-BUB3 to telomeres, and BUB1 can directly phosphorylate TRF1 and promote TRF1 recruitment of BLM helicase to overcome replication stress. Our findings have uncovered previously unknown roles for the BUB3-BUB1 complex in S phase and shed light on how proteins from diverse pathways function coordinately to ensure proper telomere replication and maintenance.
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Affiliation(s)
- Feng Li
- Key Laboratory of Gene Engineering of the Ministry of Education and State Key Laboratory of Oncology in South China, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
| | - Hyeung Kim
- Verna and Marrs Department of Biochemistry and Molecular Biology, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA
| | - Zhejian Ji
- Department of Pharmacology, Howard Hughes Medical Institute, University of Texas Southwestern Medical Center, 6001 Forest Park Road, Dallas, TX 75390, USA
| | - Tianpeng Zhang
- Key Laboratory of Gene Engineering of the Ministry of Education and State Key Laboratory of Oncology in South China, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
| | - Bohong Chen
- Key Laboratory of Gene Engineering of the Ministry of Education and State Key Laboratory of Oncology in South China, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
| | - Yuanlong Ge
- Key Laboratory of Gene Engineering of the Ministry of Education and State Key Laboratory of Oncology in South China, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
| | - Yang Hu
- Key Laboratory of Gene Engineering of the Ministry of Education and State Key Laboratory of Oncology in South China, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
| | - Xuyang Feng
- Key Laboratory of Gene Engineering of the Ministry of Education and State Key Laboratory of Oncology in South China, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
| | - Xin Han
- Key Laboratory of Gene Engineering of the Ministry of Education and State Key Laboratory of Oncology in South China, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
| | - Huimin Xu
- Key Laboratory of Gene Engineering of the Ministry of Education and State Key Laboratory of Oncology in South China, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
| | - Youwei Zhang
- Key Laboratory of Gene Engineering of the Ministry of Education and State Key Laboratory of Oncology in South China, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
| | - Hongtao Yu
- Department of Pharmacology, Howard Hughes Medical Institute, University of Texas Southwestern Medical Center, 6001 Forest Park Road, Dallas, TX 75390, USA
| | - Dan Liu
- Verna and Marrs Department of Biochemistry and Molecular Biology, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA
| | - Wenbin Ma
- Key Laboratory of Gene Engineering of the Ministry of Education and State Key Laboratory of Oncology in South China, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China.
| | - Zhou Songyang
- Key Laboratory of Gene Engineering of the Ministry of Education and State Key Laboratory of Oncology in South China, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China; Verna and Marrs Department of Biochemistry and Molecular Biology, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA.
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17
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Telomeres in Plants and Humans: Not So Different, Not So Similar. Cells 2019; 8:cells8010058. [PMID: 30654521 PMCID: PMC6356271 DOI: 10.3390/cells8010058] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 01/07/2019] [Accepted: 01/07/2019] [Indexed: 01/01/2023] Open
Abstract
Parallel research on multiple model organisms shows that while some principles of telomere biology are conserved among all eukaryotic kingdoms, we also find some deviations that reflect different evolutionary paths and life strategies, which may have diversified after the establishment of telomerase as a primary mechanism for telomere maintenance. Much more than animals, plants have to cope with environmental stressors, including genotoxic factors, due to their sessile lifestyle. This is, in principle, made possible by an increased capacity and efficiency of the molecular systems ensuring maintenance of genome stability, as well as a higher tolerance to genome instability. Furthermore, plant ontogenesis differs from that of animals in which tissue differentiation and telomerase silencing occur during early embryonic development, and the “telomere clock” in somatic cells may act as a preventive measure against carcinogenesis. This does not happen in plants, where growth and ontogenesis occur through the serial division of apical meristems consisting of a small group of stem cells that generate a linear series of cells, which differentiate into an array of cell types that make a shoot and root. Flowers, as generative plant organs, initiate from the shoot apical meristem in mature plants which is incompatible with the human-like developmental telomere shortening. In this review, we discuss differences between human and plant telomere biology and the implications for aging, genome stability, and cell and organism survival. In particular, we provide a comprehensive comparative overview of telomere proteins acting in humans and in Arabidopsis thaliana model plant, and discuss distinct epigenetic features of telomeric chromatin in these species.
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18
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Joyce BT, Zheng Y, Nannini D, Zhang Z, Liu L, Gao T, Kocherginsky M, Murphy R, Yang H, Achenbach CJ, Roberts LR, Hoxha M, Shen J, Vokonas P, Schwartz J, Baccarelli A, Hou L. DNA Methylation of Telomere-Related Genes and Cancer Risk. Cancer Prev Res (Phila) 2018; 11:511-522. [PMID: 29895583 PMCID: PMC6800137 DOI: 10.1158/1940-6207.capr-17-0413] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Revised: 04/03/2018] [Accepted: 05/22/2018] [Indexed: 01/09/2023]
Abstract
Researchers hypothesized that telomere shortening facilitates carcinogenesis. Previous studies found inconsistent associations between blood leukocyte telomere length (LTL) and cancer. Epigenetic reprogramming of telomere maintenance mechanisms may help explain this inconsistency. We examined associations between DNA methylation in telomere-related genes (TRG) and cancer. We analyzed 475 participants providing 889 samples 1 to 3 times (median follow-up, 10.1 years) from 1999 to 2013 in the Normative Aging Study. All participants were cancer-free at each visit and blood leukocytes profiled using the Illumina 450K array. Of 121 participants who developed cancer, 34 had prostate cancer, 10 melanoma, 34 unknown skin malignancies, and 43 another cancer. We examined 2,651 CpGs from 80 TRGs and applied a combination of Cox and mixed models to identify CpGs prospectively associated with cancer (at FDR < 0.05). We also explored trajectories of DNA methylation, logistic regression stratified by time to diagnosis/censoring, and cross-sectional models of LTL at first blood draw. We identified 30 CpGs on 23 TRGs whose methylation was positively associated with cancer incidence (β = 1.0-6.93) and one protective CpG in MAD1L1 (β = -0.65), of which 87% were located in TRG promoters. Methylation trajectories of 21 CpGs increased in cancer cases relative to controls; at 4 to 8 years prediagnosis/censoring, 17 CpGs were positively associated with cancer. Three CpGs were cross-sectionally associated with LTL. TRG methylation may be a mechanism through which LTL dynamics reflect cancer risk. Future research should confirm these findings and explore potential mechanisms underlying these findings, including telomere maintenance and DNA repair dysfunction. Cancer Prev Res; 11(8); 511-22. ©2018 AACR.
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Affiliation(s)
- Brian T Joyce
- Center for Population Epigenetics, Robert H. Lurie Comprehensive Cancer Center and Department of Preventive Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois.
| | - Yinan Zheng
- Center for Population Epigenetics, Robert H. Lurie Comprehensive Cancer Center and Department of Preventive Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | - Drew Nannini
- Center for Population Epigenetics, Robert H. Lurie Comprehensive Cancer Center and Department of Preventive Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | - Zhou Zhang
- Center for Population Epigenetics, Robert H. Lurie Comprehensive Cancer Center and Department of Preventive Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | - Lei Liu
- Division of Biostatistics, Washington University in St. Louis, St. Louis, Missouri
| | - Tao Gao
- Center for Population Epigenetics, Robert H. Lurie Comprehensive Cancer Center and Department of Preventive Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | - Masha Kocherginsky
- Department of Preventive Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | - Robert Murphy
- Center for Global Health, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
| | - Hushan Yang
- Division of Population Science, Department of Medical Oncology, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Chad J Achenbach
- Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | - Lewis R Roberts
- Division of Gastroenterology and Hepatology, Department of Medicine, Mayo Clinic, Rochester, Minnesota
| | - Mirjam Hoxha
- Molecular Epidemiology and Environmental Epigenetics Laboratory, Department of Clinical Sciences and Community Health, Università degli Studi di Milano, Milan, Italy
| | - Jincheng Shen
- Department of Population Health Sciences, University of Utah School of Medicine, Salt Lake City, Utah
| | - Pantel Vokonas
- VA Normative Aging Study, VA Boston Healthcare System, Boston, Massachusetts
- Department of Medicine, Boston University School of Medicine, Boston, Massachusetts
| | - Joel Schwartz
- Department of Environmental Health, Harvard School of Public Health, Boston, Massachusetts
| | - Andrea Baccarelli
- Department of Environmental Health Science, Mailman School of Public Health, Columbia University, New York, New York
| | - Lifang Hou
- Center for Population Epigenetics, Robert H. Lurie Comprehensive Cancer Center and Department of Preventive Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois
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19
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Zhao H, Han Q, Lu N, Xu D, Tian Z, Zhang J. HMBOX1 in hepatocytes attenuates LPS/D-GalN-induced liver injury by inhibiting macrophage infiltration and activation. Mol Immunol 2018; 101:303-311. [PMID: 30032072 DOI: 10.1016/j.molimm.2018.07.021] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Revised: 07/12/2018] [Accepted: 07/13/2018] [Indexed: 12/11/2022]
Abstract
The HMBOX1 (Homeobox Containing 1) gene was first isolated from the human pancreatic cDNA libraries and is widely expressed in many tissues. Previously, we detected high expression of HMBOX1 in the liver, but its function was unclear. In this study, hepatocyte-specific HMBOX1 knockout mice (Hm△hep mice) were generated and used to characterize the function of HMBOX1 in the LPS/D-GalN-induced acute liver failure model. HMBOX1-knockout exhibits exacerbated liver injury induced by LPS/D-GalN, accompanied with high levels of inflammatory cytokines both in the liver and in circulation. Further investigation demonstrated that HMBOX1 negatively regulates NF-κB signal transduction. Therefore, HMBOX1-knockout in hepatocytes promotes CCL2 expression through the activation of NF-κB signaling, which enhanced the infiltration of macrophages into the liver. In addition, the decrease of HMBOX1 in hepatocytes promotes the activation of macrophages, upregulating CD80 and MHCⅡ, as well as inflammatory factors TNF-α and IL-6. Importantly, overexpression of HMBOX1 rescued liver injury in Hm△hep mice. These findings indicate that HMBOX1 in hepatocytes acts as a key immunosuppressive factor for inflammation and plays a critical protective role in LPS/D-GalN-induced liver injury.
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Affiliation(s)
- Hengli Zhao
- Institute of Immunopharmaceutical Sciences, School of Pharmaceutical Sciences, Shandong University, China
| | - Qiuju Han
- Institute of Immunopharmaceutical Sciences, School of Pharmaceutical Sciences, Shandong University, China
| | - Nan Lu
- Diagnostic Institute, Medical School, Shandong University, China
| | - Dongqing Xu
- Institute of Immunopharmaceutical Sciences, School of Pharmaceutical Sciences, Shandong University, China
| | - Zhigang Tian
- Institute of Immunology, School of Life Sciences, University of Science and Technology of China, Hefei, China
| | - Jian Zhang
- Institute of Immunopharmaceutical Sciences, School of Pharmaceutical Sciences, Shandong University, China.
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20
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Zhou S, Xiao Y, Zhuang Y, Liu Y, Zhao H, Yang H, Xie C, Zhou F, Zhou Y. Knockdown of homeobox containing 1 increases the radiosensitivity of cervical cancer cells through telomere shortening. Oncol Rep 2017. [PMID: 28628186 DOI: 10.3892/or.2017.5707] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Homeobox containing 1 (HMBOX1) modulates telomere length in various types of tumor cells by binding to double‑stranded telomeric DNA. There is a negative correlation between telomere length and radiosensitivity in tumor cells. In the present study, we aimed to investigate the relationship among HMBOX1, telomere and radiosensitivity in cervical cancer cells. Lentivirus-based shRNAs were used to establish stable transfected cell lines in which protein and mRNA levels of HMBOX1 were notably decreased. Knockdown of HMBOX1 increased the radiosensitivity of HeLa and C33A cells. TERT protein was also decreased while HMBOX1 was downregulated. Knockdown of HMBOX1 shortened telomere length in the HeLa cells, while TERT overexpression rescued telomere shortening in the HeLa-HMBOX1 cells. Knockdown of HMBOX1 increased the apoptosis rate, decreased radiation-induced DNA damage foci, and inhibited the expression of ATM, ATR, p-ATM, p-ATR and BRCA1 in the homologous recombination repair pathway. Our data suggest a possible role of HMBOX1 in regulating radiosensitivity in cervical cancer cells. Moreover, HMBOX1 may be a potential factor in the radiotherapy of cervical cancer.
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Affiliation(s)
- Shuliang Zhou
- Department of Radiation and Medical Oncology, Zhongnan Hospital of Wuhan University, Wuhan, Hubei 430071, P.R. China
| | - Youde Xiao
- Department of Radiation and Medical Oncology, Zhongnan Hospital of Wuhan University, Wuhan, Hubei 430071, P.R. China
| | - Yafei Zhuang
- Department of Radiation and Medical Oncology, Zhongnan Hospital of Wuhan University, Wuhan, Hubei 430071, P.R. China
| | - Yinyin Liu
- Department of Radiation and Medical Oncology, Zhongnan Hospital of Wuhan University, Wuhan, Hubei 430071, P.R. China
| | - Hong Zhao
- Department of Radiation and Medical Oncology, Zhongnan Hospital of Wuhan University, Wuhan, Hubei 430071, P.R. China
| | - Hui Yang
- Department of Radiation and Medical Oncology, Zhongnan Hospital of Wuhan University, Wuhan, Hubei 430071, P.R. China
| | - Conghua Xie
- Department of Radiation and Medical Oncology, Zhongnan Hospital of Wuhan University, Wuhan, Hubei 430071, P.R. China
| | - Fuxiang Zhou
- Department of Radiation and Medical Oncology, Zhongnan Hospital of Wuhan University, Wuhan, Hubei 430071, P.R. China
| | - Yunfeng Zhou
- Department of Radiation and Medical Oncology, Zhongnan Hospital of Wuhan University, Wuhan, Hubei 430071, P.R. China
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21
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Ma H, Su L, Zhang S, Kung H, Miao J. Inhibition of ANXA7 GTPase activity by a small molecule promotes HMBOX1 translation of vascular endothelial cells in vitro and in vivo. Int J Biochem Cell Biol 2016; 79:33-40. [DOI: 10.1016/j.biocel.2016.08.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Revised: 08/02/2016] [Accepted: 08/05/2016] [Indexed: 12/28/2022]
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Platinum(II) phenanthroimidazole G-quadruplex ligand induces selective telomere shortening in A549 cancer cells. Biochimie 2015; 121:287-97. [PMID: 26724375 DOI: 10.1016/j.biochi.2015.12.015] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Accepted: 12/23/2015] [Indexed: 11/21/2022]
Abstract
Telomere maintenance, achieved by the binding of protective shelterin capping proteins to telomeres and by either telomerase or a recombination-based alternative lengthening of telomere (ALT) mechanism, is critical for cell proliferation and survival. Extensive telomere shortening or loss of telomere integrity activates DNA damage checkpoints, leading to cell senescence or death. Although telomerase upregulation is an attractive target for anti-cancer therapy, the lag associated with telomere shortening and the potential activation of ALT pose a challenge. An alternative approach is to modify telomere interactions with binding proteins (telomere uncapping). G-quadruplex ligands stabilize structures generated from single-stranded G-rich 3'-telomere end (G-quadruplex) folding, which in principle, cannot be elongated by telomerase, thus leading to telomere shortening. Ligands can also mediate rapid anti-proliferative effects by telomere uncapping. We previously reported that the G-quadruplex ligand, phenylphenanthroimidazole ethylenediamine platinum(II) (PIP), inhibits telomerase activity in vitro[47]. In the current study, a long-term seeding assay showed that PIP significantly inhibited the seeding capacity of A549 lung cancer cells and to a lesser extent primary MRC5 fibroblast cells. Importantly, treatment with PIP caused a significant dose- and time-dependent decrease in average telomere length of A549 but not MRC5 cells. Moreover, cell cycle analysis revealed a significant increase in G1 arrest upon treatment of A549 cells, but not MRC5 cells. Both apoptosis and cellular senescence may contribute to the anti-proliferative effects of PIP. Our studies validate the development of novel and specific therapeutic ligands targeting telomeric G-quadruplex structures in cancer cells.
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23
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Zhang Y, Wu Y, Mao P, Li F, Han X, Zhang Y, Jiang S, Chen Y, Huang J, Liu D, Zhao Y, Ma W, Songyang Z. Cold-inducible RNA-binding protein CIRP/hnRNP A18 regulates telomerase activity in a temperature-dependent manner. Nucleic Acids Res 2015; 44:761-75. [PMID: 26673712 PMCID: PMC4737163 DOI: 10.1093/nar/gkv1465] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2015] [Accepted: 12/01/2015] [Indexed: 01/22/2023] Open
Abstract
The telomerase is responsible for adding telomeric repeats to chromosomal ends and consists of the reverse transcriptase TERT and the RNA subunit TERC. The expression and activity of the telomerase are tightly regulated, and aberrant activation of the telomerase has been observed in >85% of human cancers. To better understand telomerase regulation, we performed immunoprecipitations coupled with mass spectrometry (IP-MS) and identified cold inducible RNA-binding protein (CIRP or hnRNP A18) as a telomerase-interacting factor. We have found that CIRP is necessary to maintain telomerase activities at both 32°C and 37°C. Furthermore, inhibition of CIRP by CRISPR-Cas9 or siRNA knockdown led to reduced telomerase activities and shortened telomere length, suggesting an important role of CIRP in telomere maintenance. We also provide evidence here that CIRP associates with the active telomerase complex through direct binding of TERC and regulates Cajal body localization of the telomerase. In addition, CIRP regulates the level of TERT mRNAs. At the lower temperature, TERT mRNA is upregulated in a CIRP-dependent manner to compensate for reduced telomerase activities. Taken together, these findings highlight the dual roles that CIRP plays in regulating TERT and TERC, and reveal a new class of telomerase modulators in response to hypothermia conditions.
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Affiliation(s)
- Youwei Zhang
- Key Laboratory of Gene Engineering of the Ministry of Education, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou 510006, China Collaborative Innovation Center for Cancer Medicine, Institute of Healthy Aging Research, Sun Yat-sen University, Guangzhou 510006, China
| | - Yangxiu Wu
- Key Laboratory of Gene Engineering of the Ministry of Education, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Pingsu Mao
- Key Laboratory of Gene Engineering of the Ministry of Education, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Feng Li
- Key Laboratory of Gene Engineering of the Ministry of Education, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Xin Han
- Key Laboratory of Gene Engineering of the Ministry of Education, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Yi Zhang
- Verna and Marrs Mclean Department of Biochemistry and Molecular Biology, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA
| | - Shuai Jiang
- Key Laboratory of Gene Engineering of the Ministry of Education, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Yuxi Chen
- Key Laboratory of Gene Engineering of the Ministry of Education, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Junjiu Huang
- Key Laboratory of Gene Engineering of the Ministry of Education, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Dan Liu
- Verna and Marrs Mclean Department of Biochemistry and Molecular Biology, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA
| | - Yong Zhao
- Key Laboratory of Gene Engineering of the Ministry of Education, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Wenbin Ma
- Key Laboratory of Gene Engineering of the Ministry of Education, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou 510006, China Collaborative Innovation Center for Cancer Medicine, Institute of Healthy Aging Research, Sun Yat-sen University, Guangzhou 510006, China
| | - Zhou Songyang
- Key Laboratory of Gene Engineering of the Ministry of Education, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou 510006, China Collaborative Innovation Center for Cancer Medicine, Institute of Healthy Aging Research, Sun Yat-sen University, Guangzhou 510006, China Verna and Marrs Mclean Department of Biochemistry and Molecular Biology, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA
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24
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HMBOX1 interacts with MT2A to regulate autophagy and apoptosis in vascular endothelial cells. Sci Rep 2015; 5:15121. [PMID: 26456220 PMCID: PMC4600982 DOI: 10.1038/srep15121] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2015] [Accepted: 09/16/2015] [Indexed: 12/03/2022] Open
Abstract
We previously found that Homeobox containing 1 (HMBOX1) was required for bone mesenchymal stem cell (BMSC) and mouse embryonic stem cell (ESC) differentiation into vascular endothelial cells (VECs). However, the function of HMBOX1 in VECs is still unknown. In this study, we found that HMBOX1 was abundantly expressed in the cytoplasm of human umbilical vascular endothelial cells (HUVECs). Knockdown of HMBOX1 induced apoptosis and inhibited autophagy. Overexpression of HMBOX1 inhibited apoptosis induced by fibroblast growth factor 2 deprivation and promoted autophagy. Metallothionein 2A (MT2A) was identified as an interaction protein with HMBOX1 by yeast two-hybrid assay, and confirmed by co-immunoprecipitation. Overexpression of HMBOX1 elevated intracellular free zinc level. Knockdown of MT2A inhibited this phenomenon. Moreover, N,N,N = ,N = -tetrakis (2-pyridylmethyl) ethylenediamine (TPEN), a zinc chelator, reversed the anti-apoptosis and pro-autophagy effects of HMBOX1. In conclusion, HMBOX1 regulated intracellular free zinc level by interacting with MT2A to inhibit apoptosis and promote autophagy in VECs.
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25
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Luo Z, Dai Z, Xie X, Feng X, Liu D, Songyang Z, Xiong Y. TeloPIN: a database of telomeric proteins interaction network in mammalian cells. DATABASE-THE JOURNAL OF BIOLOGICAL DATABASES AND CURATION 2015; 2015:bav018. [PMID: 25792605 PMCID: PMC4365144 DOI: 10.1093/database/bav018] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Interaction network surrounding telomeres has been intensively studied during the past two decades. However, no specific resource by integrating telomere interaction information data is currently available. To facilitate the understanding of the molecular interaction network by which telomeres are associated with biological process and diseases, we have developed TeloPIN (Telomeric Proteins Interaction Network) database (http://songyanglab.sysu.edu.cn/telopin/), a novel database that points to provide comprehensive information on protein–protein, protein–DNA and protein–RNA interaction of telomeres. TeloPIN database contains four types of interaction data, including (i) protein–protein interaction (PPI) data, (ii) telomeric proteins ChIP-seq data, (iii) telomere-associated proteins data and (iv) telomeric repeat-containing RNAs (TERRA)-interacting proteins data. By analyzing these four types of interaction data, we found that 358 and 199 proteins have more than one type of interaction information in human and mouse cells, respectively. We also developed table browser and TeloChIP genome browser to help researchers with better integrated visualization of interaction data from different studies. The current release of TeloPIN database includes 1111 PPI, eight telomeric protein ChIP-seq data sets, 1391 telomere-associated proteins and 183 TERRA-interacting proteins from 92 independent studies in mammalian cells. The interaction information provided by TeloPIN database will greatly expand our knowledge of telomeric proteins interaction network. Database URL: TeloPIN database address is http://songyanglab.sysu.edu.cn/telopin. TeloPIN database is freely available to non-commercial use.
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Affiliation(s)
- Zhenhua Luo
- Key Laboratory of Gene Engineering of the Ministry of Education and State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510006, China, Department of Electronics and Communication Engineering, School of Information Science and Technology, Sun Yat-Sen University, Guangzhou, China; SYSU-CMU Shunde International Joint Research Institute (JRI) Shunde, Guangdong, China; Cell-Based Assay Screening Core, Dan L. Duncan Cancer Center, Verna and Marrs Mclean Department of Biochemistry and Molecular Biology, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA, and Key Laboratory of Reproductive Medicine of Guangdong Province, Guangzhou, China
| | - Zhiming Dai
- Key Laboratory of Gene Engineering of the Ministry of Education and State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510006, China, Department of Electronics and Communication Engineering, School of Information Science and Technology, Sun Yat-Sen University, Guangzhou, China; SYSU-CMU Shunde International Joint Research Institute (JRI) Shunde, Guangdong, China; Cell-Based Assay Screening Core, Dan L. Duncan Cancer Center, Verna and Marrs Mclean Department of Biochemistry and Molecular Biology, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA, and Key Laboratory of Reproductive Medicine of Guangdong Province, Guangzhou, China Key Laboratory of Gene Engineering of the Ministry of Education and State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510006, China, Department of Electronics and Communication Engineering, School of Information Science and Technology, Sun Yat-Sen University, Guangzhou, China; SYSU-CMU Shunde International Joint Research Institute (JRI) Shunde, Guangdong, China; Cell-Based Assay Screening Core, Dan L. Duncan Cancer Center, Verna and Marrs Mclean Department of Biochemistry and Molecular Biology, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA, and Key Laboratory of Reproductive Medicine of Guangdong Province, Guangzhou, China
| | - Xiaowei Xie
- Key Laboratory of Gene Engineering of the Ministry of Education and State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510006, China, Department of Electronics and Communication Engineering, School of Information Science and Technology, Sun Yat-Sen University, Guangzhou, China; SYSU-CMU Shunde International Joint Research Institute (JRI) Shunde, Guangdong, China; Cell-Based Assay Screening Core, Dan L. Duncan Cancer Center, Verna and Marrs Mclean Department of Biochemistry and Molecular Biology, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA, and Key Laboratory of Reproductive Medicine of Guangdong Province, Guangzhou, China
| | - Xuyang Feng
- Key Laboratory of Gene Engineering of the Ministry of Education and State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510006, China, Department of Electronics and Communication Engineering, School of Information Science and Technology, Sun Yat-Sen University, Guangzhou, China; SYSU-CMU Shunde International Joint Research Institute (JRI) Shunde, Guangdong, China; Cell-Based Assay Screening Core, Dan L. Duncan Cancer Center, Verna and Marrs Mclean Department of Biochemistry and Molecular Biology, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA, and Key Laboratory of Reproductive Medicine of Guangdong Province, Guangzhou, China
| | - Dan Liu
- Key Laboratory of Gene Engineering of the Ministry of Education and State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510006, China, Department of Electronics and Communication Engineering, School of Information Science and Technology, Sun Yat-Sen University, Guangzhou, China; SYSU-CMU Shunde International Joint Research Institute (JRI) Shunde, Guangdong, China; Cell-Based Assay Screening Core, Dan L. Duncan Cancer Center, Verna and Marrs Mclean Department of Biochemistry and Molecular Biology, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA, and Key Laboratory of Reproductive Medicine of Guangdong Province, Guangzhou, China Key Laboratory of Gene Engineering of the Ministry of Education and State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510006, China, Department of Electronics and Communication Engineering, School of Information Science and Technology, Sun Yat-Sen University, Guangzhou, China; SYSU-CMU Shunde International Joint Research Institute (JRI) Shunde, Guangdong, China; Cell-Based Assay Screening Core, Dan L. Duncan Cancer Center, Verna and Marrs Mclean Department of Biochemistry and Molecular Biology, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA, and Key Laboratory of Reproductive Medicine of Guangdong Province, Guangzhou, China Key Laboratory of Gene Engineering of the Ministry of Education and State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510006, China, Department of Electronics and Communication Engineering, School of Information Science and Technology, Sun Yat-Sen University, Guangzhou, China; SYSU-CMU Shunde International Joint Research Institute (JRI) Shunde, Guangdong, China; Cell-Based Assay Screening Core, Dan L. Duncan Cancer Center, Verna and Marrs Mclean Department of Biochemistry and Molecular Biology, Baylor College of Medicine, One Baylor Plaza, Houston, TX
| | - Zhou Songyang
- Key Laboratory of Gene Engineering of the Ministry of Education and State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510006, China, Department of Electronics and Communication Engineering, School of Information Science and Technology, Sun Yat-Sen University, Guangzhou, China; SYSU-CMU Shunde International Joint Research Institute (JRI) Shunde, Guangdong, China; Cell-Based Assay Screening Core, Dan L. Duncan Cancer Center, Verna and Marrs Mclean Department of Biochemistry and Molecular Biology, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA, and Key Laboratory of Reproductive Medicine of Guangdong Province, Guangzhou, China Key Laboratory of Gene Engineering of the Ministry of Education and State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510006, China, Department of Electronics and Communication Engineering, School of Information Science and Technology, Sun Yat-Sen University, Guangzhou, China; SYSU-CMU Shunde International Joint Research Institute (JRI) Shunde, Guangdong, China; Cell-Based Assay Screening Core, Dan L. Duncan Cancer Center, Verna and Marrs Mclean Department of Biochemistry and Molecular Biology, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA, and Key Laboratory of Reproductive Medicine of Guangdong Province, Guangzhou, China Key Laboratory of Gene Engineering of the Ministry of Education and State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510006, China, Department of Electronics and Communication Engineering, School of Information Science and Technology, Sun Yat-Sen University, Guangzhou, China; SYSU-CMU Shunde International Joint Research Institute (JRI) Shunde, Guangdong, China; Cell-Based Assay Screening Core, Dan L. Duncan Cancer Center, Verna and Marrs Mclean Department of Biochemistry and Molecular Biology, Baylor College of Medicine, One Baylor Plaza, Houston, TX
| | - Yuanyan Xiong
- Key Laboratory of Gene Engineering of the Ministry of Education and State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510006, China, Department of Electronics and Communication Engineering, School of Information Science and Technology, Sun Yat-Sen University, Guangzhou, China; SYSU-CMU Shunde International Joint Research Institute (JRI) Shunde, Guangdong, China; Cell-Based Assay Screening Core, Dan L. Duncan Cancer Center, Verna and Marrs Mclean Department of Biochemistry and Molecular Biology, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA, and Key Laboratory of Reproductive Medicine of Guangdong Province, Guangzhou, China Key Laboratory of Gene Engineering of the Ministry of Education and State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510006, China, Department of Electronics and Communication Engineering, School of Information Science and Technology, Sun Yat-Sen University, Guangzhou, China; SYSU-CMU Shunde International Joint Research Institute (JRI) Shunde, Guangdong, China; Cell-Based Assay Screening Core, Dan L. Duncan Cancer Center, Verna and Marrs Mclean Department of Biochemistry and Molecular Biology, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA, and Key Laboratory of Reproductive Medicine of Guangdong Province, Guangzhou, China
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26
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Identification of a telomeric DNA-binding protein in Eimeria tenella. Biochem Biophys Res Commun 2014; 451:599-602. [DOI: 10.1016/j.bbrc.2014.08.030] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2014] [Accepted: 08/06/2014] [Indexed: 11/18/2022]
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27
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Wang FW, Zhao F, Qian XY, Yu ZZ, Zhao J, Su L, Zhang Y, Zhang SL, Zhao BX, Miao JY. Identification of a small molecule preventing BMSC senescence in vitro by improving intracellular homeostasis via ANXA7 and Hmbox1. RSC Adv 2014. [DOI: 10.1039/c4ra10404h] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
ABO was discovered to be a novel anti-aging chemical in cultured BMSCs by improving intracellular homeostasis.
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Affiliation(s)
- Fang-Wu Wang
- Institute of Developmental Biology
- School of Life Science
- Shandong University
- Jinan 250100, P.R. China
| | - Fei Zhao
- Institute of Developmental Biology
- School of Life Science
- Shandong University
- Jinan 250100, P.R. China
| | - Xing-Yang Qian
- Institute of Developmental Biology
- School of Life Science
- Shandong University
- Jinan 250100, P.R. China
| | - Zhe-Zhen Yu
- Institute of Developmental Biology
- School of Life Science
- Shandong University
- Jinan 250100, P.R. China
| | - Jing Zhao
- Institute of Developmental Biology
- School of Life Science
- Shandong University
- Jinan 250100, P.R. China
| | - Le Su
- Institute of Developmental Biology
- School of Life Science
- Shandong University
- Jinan 250100, P.R. China
| | - Yun Zhang
- The Key Laboratory of Cardiovascular Remodeling and Function Research
- Chinese Ministry of Education and Chinese Ministry of Health
- Shandong University Qilu Hospital
- Jinan, P.R. China
| | - Shang-Li Zhang
- Institute of Developmental Biology
- School of Life Science
- Shandong University
- Jinan 250100, P.R. China
| | - Bao-Xiang Zhao
- Institute of Organic Chemistry
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan 250100, P.R. China
| | - Jun-Ying Miao
- Institute of Developmental Biology
- School of Life Science
- Shandong University
- Jinan 250100, P.R. China
- The Key Laboratory of Cardiovascular Remodeling and Function Research
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