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Huang K, Gong H, Guan J, Zhang L, Hu C, Zhao W, Huang L, Zhang W, Kim P, Zhou X. AgeAnno: a knowledgebase of single-cell annotation of aging in human. Nucleic Acids Res 2023; 51:D805-D815. [PMID: 36200838 PMCID: PMC9825500 DOI: 10.1093/nar/gkac847] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 09/14/2022] [Accepted: 09/22/2022] [Indexed: 01/30/2023] Open
Abstract
Aging is a complex process that accompanied by molecular and cellular alterations. The identification of tissue-/cell type-specific biomarkers of aging and elucidation of the detailed biological mechanisms of aging-related genes at the single-cell level can help to understand the heterogeneous aging process and design targeted anti-aging therapeutics. Here, we built AgeAnno (https://relab.xidian.edu.cn/AgeAnno/#/), a knowledgebase of single cell annotation of aging in human, aiming to provide comprehensive characterizations for aging-related genes across diverse tissue-cell types in human by using single-cell RNA and ATAC sequencing data (scRNA and scATAC). The current version of AgeAnno houses 1 678 610 cells from 28 healthy tissue samples with ages ranging from 0 to 110 years. We collected 5580 aging-related genes from previous resources and performed dynamic functional annotations of the cellular context. For the scRNA data, we performed analyses include differential gene expression, gene variation coefficient, cell communication network, transcription factor (TF) regulatory network, and immune cell proportionc. AgeAnno also provides differential chromatin accessibility analysis, motif/TF enrichment and footprint analysis, and co-accessibility peak analysis for scATAC data. AgeAnno will be a unique resource to systematically characterize aging-related genes across diverse tissue-cell types in human, and it could facilitate antiaging and aging-related disease research.
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Affiliation(s)
- Kexin Huang
- West China Biomedical Big Data Centre, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
- Med-X Center for Informatics, Sichuan University,Chengdu,Sichuan 610041, P.R. China
| | - Hoaran Gong
- West China Biomedical Big Data Centre, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
- Med-X Center for Informatics, Sichuan University,Chengdu,Sichuan 610041, P.R. China
| | - Jingjing Guan
- School of Life Science and Technology, Xidian University, Xi’an, Shaanxi 710071, P.R. China
| | - Lingxiao Zhang
- School of Life Science and Technology, Xidian University, Xi’an, Shaanxi 710071, P.R. China
| | - Changbao Hu
- School of Life Science and Technology, Xidian University, Xi’an, Shaanxi 710071, P.R. China
| | - Weiling Zhao
- Center for Computational Systems Medicine, School of Biomedical Informatics, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
| | - Liyu Huang
- School of Life Science and Technology, Xidian University, Xi’an, Shaanxi 710071, P.R. China
| | - Wei Zhang
- West China Biomedical Big Data Centre, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
- Med-X Center for Informatics, Sichuan University,Chengdu,Sichuan 610041, P.R. China
| | - Pora Kim
- Center for Computational Systems Medicine, School of Biomedical Informatics, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
| | - Xiaobo Zhou
- Center for Computational Systems Medicine, School of Biomedical Informatics, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
- McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
- School of Dentistry, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
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Hwang HJ, Kim N, Herman AB, Gorospe M, Lee JS. Factors and Pathways Modulating Endothelial Cell Senescence in Vascular Aging. Int J Mol Sci 2022; 23:ijms231710135. [PMID: 36077539 PMCID: PMC9456027 DOI: 10.3390/ijms231710135] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 08/31/2022] [Accepted: 09/01/2022] [Indexed: 11/16/2022] Open
Abstract
Aging causes a progressive decline in the structure and function of organs. With advancing age, an accumulation of senescent endothelial cells (ECs) contributes to the risk of developing vascular dysfunction and cardiovascular diseases, including hypertension, diabetes, atherosclerosis, and neurodegeneration. Senescent ECs undergo phenotypic changes that alter the pattern of expressed proteins, as well as their morphologies and functions, and have been linked to vascular impairments, such as aortic stiffness, enhanced inflammation, and dysregulated vascular tone. Numerous molecules and pathways, including sirtuins, Klotho, RAAS, IGFBP, NRF2, and mTOR, have been implicated in promoting EC senescence. This review summarizes the molecular players and signaling pathways driving EC senescence and identifies targets with possible therapeutic value in age-related vascular diseases.
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Affiliation(s)
- Hyun Jung Hwang
- Research Center for Controlling Intercellular Communication, College of Medicine, Inha University, Incheon 22212, Korea
- Department of Molecular Medicine, College of Medicine, Inha University, Incheon 22212, Korea
| | - Nayeon Kim
- Research Center for Controlling Intercellular Communication, College of Medicine, Inha University, Incheon 22212, Korea
- Department of Molecular Medicine, College of Medicine, Inha University, Incheon 22212, Korea
- Program in Biomedical Science and Engineering, College of Medicine, Inha University, Incheon 22212, Korea
| | - Allison B. Herman
- Laboratory of Genetics and Genomics, National Institute on Aging-Intramural Research Program, NIH, Baltimore, MD 21224, USA
| | - Myriam Gorospe
- Laboratory of Genetics and Genomics, National Institute on Aging-Intramural Research Program, NIH, Baltimore, MD 21224, USA
| | - Jae-Seon Lee
- Research Center for Controlling Intercellular Communication, College of Medicine, Inha University, Incheon 22212, Korea
- Department of Molecular Medicine, College of Medicine, Inha University, Incheon 22212, Korea
- Program in Biomedical Science and Engineering, College of Medicine, Inha University, Incheon 22212, Korea
- Correspondence:
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Jeong Y, You D, Kang HG, Yu J, Kim SW, Nam SJ, Lee JE, Kim S. Berberine Suppresses Fibronectin Expression through Inhibition of c-Jun Phosphorylation in Breast Cancer Cells. J Breast Cancer 2018; 21:21-27. [PMID: 29628980 PMCID: PMC5880962 DOI: 10.4048/jbc.2018.21.1.21] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Accepted: 12/12/2017] [Indexed: 12/11/2022] Open
Abstract
Purpose The exact mechanism regulating fibronectin (FN) expression in breast cancer cells has not been fully elucidated. In this study, we investigated the pharmacological mechanism of berberine (BBR) with respect to FN expression in triple-negative breast cancer (TNBC) cells. Methods The clinical significance of FN mRNA expression was analyzed using the Kaplan-Meier plotter database (http://kmplot.com/breast). FN mRNA and protein expression levels were analyzed by real-time polymerase chain reaction and western blotting, respectively. Results Using publicly available clinical data, we observed that high FN expression was associated with poor prognosis in patients with breast cancer. FN mRNA and protein expression was increased in TNBC cells compared with non-TNBC cells. As expected, recombinant human FN significantly induced cell spreading and adhesion in MDA-MB231 TNBC cells. We also investigated the regulatory mechanism underlying FN expression. Basal levels of FN mRNA and protein expression were downregulated by a specific activator protein-1 (AP-1) inhibitor, SR11302. Interestingly, FN expression in TNBC cells was dose-dependently decreased by BBR treatment. The level of c-Jun phosphorylation was also decreased by BBR treatment. Conclusion Our findings demonstrate that FN expression is regulated via an AP-1–dependent mechanism, and that BBR suppresses FN expression in TNBC cells through inhibition of AP-1 activity.
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Affiliation(s)
- Yisun Jeong
- Department of Health Sciences and Technology, Samsung Advanced Institute for Health Sciences & Technology, Sungkyunkwan University, Seoul, Korea
| | - Daeun You
- Department of Health Sciences and Technology, Samsung Advanced Institute for Health Sciences & Technology, Sungkyunkwan University, Seoul, Korea
| | - Hyun-Gu Kang
- Department of Health Sciences and Technology, Samsung Advanced Institute for Health Sciences & Technology, Sungkyunkwan University, Seoul, Korea
| | - Jonghan Yu
- Breast Cancer Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.,Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Seok Won Kim
- Breast Cancer Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.,Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Seok Jin Nam
- Breast Cancer Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.,Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Jeong Eon Lee
- Department of Health Sciences and Technology, Samsung Advanced Institute for Health Sciences & Technology, Sungkyunkwan University, Seoul, Korea.,Breast Cancer Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.,Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Sangmin Kim
- Breast Cancer Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
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Meng G, Zhong X, Mei H. A Systematic Investigation into Aging Related Genes in Brain and Their Relationship with Alzheimer's Disease. PLoS One 2016; 11:e0150624. [PMID: 26937969 PMCID: PMC4777381 DOI: 10.1371/journal.pone.0150624] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2015] [Accepted: 02/17/2016] [Indexed: 01/08/2023] Open
Abstract
Aging, as a complex biological process, is accompanied by the accumulation of functional loses at different levels, which makes age to be the biggest risk factor to many neurological diseases. Even following decades of investigation, the process of aging is still far from being fully understood, especially at a systematic level. In this study, we identified aging related genes in brain by collecting the ones with sustained and consistent gene expression or DNA methylation changes in the aging process. Functional analysis with Gene Ontology to these genes suggested transcriptional regulators to be the most affected genes in the aging process. Transcription regulation analysis found some transcription factors, especially Specificity Protein 1 (SP1), to play important roles in regulating aging related gene expression. Module-based functional analysis indicated these genes to be associated with many well-known aging related pathways, supporting the validity of our approach to select aging related genes. Finally, we investigated the roles of aging related genes on Alzheimer's Disease (AD). We found that aging and AD related genes both involved some common pathways, which provided a possible explanation why aging made the brain more vulnerable to Alzheimer's Disease.
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Affiliation(s)
- Guofeng Meng
- Computational Modeling Sciences, Platform Technologies and Science, GlaxoSmithKline Research & Development, Shanghai, China
| | - Xiaoyan Zhong
- Neurodegeneration DPU, GlaxoSmithKline Research & Development, Shanghai, China
| | - Hongkang Mei
- Computational Modeling Sciences, Platform Technologies and Science, GlaxoSmithKline Research & Development, Shanghai, China
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Tian XL, Li Y. Endothelial cell senescence and age-related vascular diseases. J Genet Genomics 2014; 41:485-95. [PMID: 25269674 DOI: 10.1016/j.jgg.2014.08.001] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2014] [Revised: 07/31/2014] [Accepted: 08/06/2014] [Indexed: 10/24/2022]
Abstract
Advanced age is an independent risk factor for ageing-related complex diseases, such as coronary artery disease, stroke, and hypertension, which are common but life threatening and related to the ageing-associated vascular dysfunction. On the other hand, patients with progeria syndromes suffer from serious atherosclerosis, suggesting that the impaired vascular functions may be critical to organismal ageing, or vice versa. However, it remains largely unknown how vascular cells, particularly endothelial cell, become senescent and how the senescence impairs the vascular functions and contributes to the age-related vascular diseases over time. Here, we review the recent progress on the characteristics of vascular ageing and endothelial cell senescence in vitro and in vivo, evaluate how genetic and environmental factors as well as autophagy and stem cell influence endothelial cell senescence and how the senescence contributes to the age-related vascular phenotypes, such as atherosclerosis and increased vascular stiffness, and explore the possibility whether we can delay the age-related vascular diseases through the control of vascular ageing.
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Affiliation(s)
- Xiao-Li Tian
- Department of Human Population Genetics and Beijing Key Laboratory of Cardiometabolic Molecular Medicine, Institute of Molecular Medicine (IMM), Peking University, Beijing 100871, China.
| | - Yang Li
- Department of Human Population Genetics and Beijing Key Laboratory of Cardiometabolic Molecular Medicine, Institute of Molecular Medicine (IMM), Peking University, Beijing 100871, China
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Effect of curcumin on aged Drosophila melanogaster: a pathway prediction analysis. Chin J Integr Med 2013; 21:115-22. [PMID: 24155070 DOI: 10.1007/s11655-013-1333-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2012] [Indexed: 10/26/2022]
Abstract
OBJECTIVE To re-analyze the data published in order to explore plausible biological pathways that can be used to explain the anti-aging effect of curcumin. METHODS Microarray data generated from other study aiming to investigate effect of curcumin on extending lifespan of Drosophila melanogaster were further used for pathway prediction analysis. The differentially expressed genes were identified by using GeneSpring GX with a criterion of 3.0-fold change. Two Cytoscape plugins including BisoGenet and molecular complex detection (MCODE) were used to establish the protein-protein interaction (PPI) network based upon differential genes in order to detect highly connected regions. The function annotation clustering tool of Database for Annotation, Visualization and Integrated Discovery (DAVID) was used for pathway analysis. RESULTS A total of 87 genes expressed differentially in D. melanogaster melanogaster treated with curcumin were identified, among which 50 were up-regulated significantly and 37 were remarkably down-regulated in D. melanogaster melanogaster treated with curcumin. Based upon these differential genes, PPI network was constructed with 1,082 nodes and 2,412 edges. Five highly connected regions in PPI networks were detected by MCODE algorithm, suggesting anti-aging effect of curcumin may be underlined through five different pathways including Notch signaling pathway, basal transcription factors, cell cycle regulation, ribosome, Wnt signaling pathway, and p53 pathway. CONCLUSION Genes and their associated pathways in D. melanogaster melanogaster treated with anti-aging agent curcumin were identified using PPI network and MCODE algorithm, suggesting that curcumin may be developed as an alternative therapeutic medicine for treating aging-associated diseases.
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Abstract
Oxidative stress is claimed to be a major cause of aging. Recent data suggest that calorie restriction (CR) prolongs life span by its ability to retard aging, possibly by regulating the intracellular redox status through its antioxidative actions. Currently, there is little information showing the influences of age and CR on the redox-sensitive transcription factor activator protein-1 (AP-1). In the present study, we investigated how age affects the status of AP-1 and whether CR modulates the age effect. For our study, we used the kidney from male Fischer 344 rats, ages 6, 12, 18, and 24 months fed ad libitum (AL) or a CR diet. Results from our study showed that AP-1 binding activity markedly increases with age, while CR keeps this activity at the level of 6-month-old rats. We found that c-Jun and c-Fos protein levels increase during aging, and that aging induces phosphorylation of c-Jun, which might enhance AP-1 transcriptional activity. For CR's action, we found that in the nucleus of aged rats, AP-1 activation was blunted by decreasing c-Jun and c-Fos levels and inhibiting c-Jun protein phosphorylation. Results also indicated that matrix metalloproteinase-13 and heme oxygenase-1, which have an AP-1 binding site in their promoter regions, have a similar tendency toward AP-1 binding activity. Based on the data of these findings, we concluded that AP-1 activity increases in rat kidney with age and that CR reduces AP-1 activity.
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Abstract
Cellular Jun (c-Jun) and viral Jun (v-Jun) can induce oncogenic transformation. For this activity, c-Jun requires an upstream signal, delivered by the Jun N-terminal kinase (JNK). v-Jun does not interact with JNK; it is autonomous and constitutively active. v-Jun and c-Jun address overlapping but not identical sets of genes. Whether all genes essential for transformation reside within the overlap of the v-Jun and c-Jun target spectra remains to be determined. The search for transformation-relevant targets of Jun is moving into a new stage with the application of DNA microarrays technology. Genetic screens and functional tests remain a necessity for the identification of genes that control the oncogenic phenotype.
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Affiliation(s)
- P K Vogt
- Department of Molecular and Experimental Medicine, The Scripps Reasearch Institute, 10550 North Torrey Pines Drive, La Jolla, California, CA 9203, USA
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Rinehart-Kim J, Johnston M, Birrer M, Bos T. Alterations in the gene expression profile of MCF-7 breast tumor cells in response to c-Jun. Int J Cancer 2000; 88:180-90. [PMID: 11004666 DOI: 10.1002/1097-0215(20001015)88:2<180::aid-ijc6>3.0.co;2-h] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
MCF7 breast tumor cells overexpressing human c-Jun exhibit a transformed phenotype characterized not only by increased tumorigenicity but also by enhanced motility and invasion. The cellular phenotypic response to c-Jun overexpression is likely due, at least in part, to altered patterns of gene expression. In order to begin to understand the complexities by which elevated production of c-Jun alters the state of the cell, we have profiled the expression of 588 different genes by comparative hybridization. By using this approach, we have identified a total of 21 upregulated or downregulated gene targets responsive to c-Jun overexpression. Interestingly, 8 of these genes have been previously found associated with c-Jun or AP-1 activity and therefore provide internal validation for this approach to target gene discovery. The remaining 13 genes represent potential new c-Jun regulated target genes. Genomic sequence information was available for 15 of the 21 genes identified in this screen. Analysis of these genomic sequences revealed the presence of AP-1 or AP-1-like sequences in 12 of the 15 genes examined. Consistent with a direct mechanism of target regulation by c-Jun, gel shift analysis of selected AP-1-containing promoter regions revealed elevated and specific binding by proteins present in nuclear extracts of c-Jun expressing MCF7 cells.
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Affiliation(s)
- J Rinehart-Kim
- Department of Microbiology and Molecular Cell Biology, Eastern Virginia Medical School, Norfolk, Virginia, USA
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Fukami-Kobayashi J, Mitsui Y. The regulation of cyclin D1 expression in senescent human fibroblasts. Exp Cell Res 1998; 241:435-44. [PMID: 9637785 DOI: 10.1006/excr.1998.4079] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
To clarify the molecular mechanisms of cyclin D1 expression during in vitro cellular aging, we investigated the binding of nuclear protein factors to the cyclin D1 gene promoter domain in young and senescent normal human fibroblasts. The cyclin D1 promoter binding activities of nuclear protein factors from young and senescent cells were examined by the gel mobility shift assay. Our findings revealed that (i) the binding of a specific nuclear factor to the enhancer element was very weak in senescent cells; (ii) the binding of a specific nuclear factor to the CRE, which is independent of cell growth, was unchanged between young and senescent cells; (iii) nuclear factors from senescent cells did not bind to the presumptive silencer element; (iv) the binding of specific factors to the Inr (transcription initiation region) and E2F increased with growth stimulation in young cells and was weakly detectable in senescent cells; and (v) the binding of Sp1 to its promoter element occurred only in senescent cells. The analysis of the silencer element by the gel mobility shift assay revealed that the essential sequence required for binding of specific factors to the silencer element was TTTAAT. The molecular weight of the binding factor to the silencer element was determined to be approximately 35 kDa by the Southwestern blotting and UV cross-linking assay. Thus, we postulated that the observed increase of cyclin D1 expression during cellular aging is due to an increase in the binding activity of specific nuclear protein factors to an enhancer element, Sp1, and a decrease in binding to a silencer element in senescent cells.
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Affiliation(s)
- J Fukami-Kobayashi
- Agency of Industrial ScienceTechnology, National Institute of Bioscience and Human Technology, Ibaraki, Higashi 1-1, Tsukuba, 305, Japan
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