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Thompson JM, Watts SW, Terrian L, Contreras GA, Rockwell C, Rendon CJ, Wabel E, Lockwood L, Bhattacharya S, Nault R. A cell atlas of thoracic aortic perivascular adipose tissue: a focus on mechanotransducers. Am J Physiol Heart Circ Physiol 2024; 326:H1252-H1265. [PMID: 38517229 DOI: 10.1152/ajpheart.00040.2024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Revised: 03/05/2024] [Accepted: 03/13/2024] [Indexed: 03/23/2024]
Abstract
Perivascular adipose tissue (PVAT) is increasingly recognized for its function in mechanotransduction. However, major gaps remain in our understanding of the cells present in PVAT, as well as how different cells contribute to mechanotransduction. We hypothesized that snRNA-seq would reveal the expression of mechanotransducers, and test one (PIEZO1) to illustrate the expression and functional agreement between single-nuclei RNA sequencing (snRNA-seq) and physiological measurements. To contrast two brown tissues, subscapular brown adipose tissue (BAT) was also examined. We used snRNA-seq of the thoracic aorta PVAT (taPVAT) and BAT from male Dahl salt-sensitive (Dahl SS) rats to investigate cell-specific expression mechanotransducers. Localization and function of the mechanostransducer PIEZO1 were further examined using immunohistochemistry (IHC) and RNAscope, as well as pharmacological antagonism. Approximately 30,000 nuclei from taPVAT and BAT each were characterized by snRNA-seq, identifying eight major cell types expected and one unexpected (nuclei with oligodendrocyte marker genes). Cell-specific differential gene expression analysis between taPVAT and BAT identified up to 511 genes (adipocytes) with many (≥20%) being unique to individual cell types. Piezo1 was the most highly, widely expressed mechanotransducer. The presence of PIEZO1 in the PVAT but not the adventitia was confirmed by RNAscope and IHC in male and female rats. Importantly, antagonism of PIEZO1 by GsMTX4 impaired the PVAT's ability to hold tension. Collectively, the cell compositions of taPVAT and BAT are highly similar, and PIEZO1 is likely a mechanotransducer in taPVAT.NEW & NOTEWORTHY This study describes the atlas of cells in the thoracic aorta perivascular adipose tissue (taPVAT) of the Dahl-SS rat, an important hypertension model. We show that mechanotransducers are widely expressed in these cells. Moreover, PIEZO1 expression is shown to be restricted to the taPVAT and is functionally implicated in stress relaxation. These data will serve as the foundation for future studies investigating the role of taPVAT in this model of hypertensive disease.
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Affiliation(s)
- Janice M Thompson
- Department of Pharmacology and Toxicology, Michigan State University, East Lansing, Michigan, United States
| | - Stephanie W Watts
- Department of Pharmacology and Toxicology, Michigan State University, East Lansing, Michigan, United States
| | - Leah Terrian
- Department of Biomedical Engineering, Michigan State University, East Lansing, Michigan, United States
| | - G Andres Contreras
- Department of Large Animal Clinical Sciences, Michigan State University, East Lansing, Michigan, United States
| | - Cheryl Rockwell
- Department of Pharmacology and Toxicology, Michigan State University, East Lansing, Michigan, United States
| | - C Javier Rendon
- Department of Large Animal Clinical Sciences, Michigan State University, East Lansing, Michigan, United States
| | - Emma Wabel
- Department of Pharmacology and Toxicology, Michigan State University, East Lansing, Michigan, United States
| | - Lizbeth Lockwood
- Department of Pharmacology and Toxicology, Michigan State University, East Lansing, Michigan, United States
| | - Sudin Bhattacharya
- Department of Pharmacology and Toxicology, Michigan State University, East Lansing, Michigan, United States
- Department of Biomedical Engineering, Michigan State University, East Lansing, Michigan, United States
- Institute for Quantitative Health Science and Engineering, Michigan State University, East Lansing, Michigan, United States
- Institute for Integrative Toxicology, Michigan State University, East Lansing, Michigan, United States
| | - Rance Nault
- Department of Pharmacology and Toxicology, Michigan State University, East Lansing, Michigan, United States
- Institute for Integrative Toxicology, Michigan State University, East Lansing, Michigan, United States
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Chen SY, Chen YL, Li PC, Cheng TS, Chu YS, Shen YS, Chen HT, Tsai WN, Huang CL, Sieber M, Yeh YC, Liu HS, Chiang CL, Chang CH, Lee AS, Tseng YH, Lee LJ, Liao HJ, Yip HK, Huang CYF. Engineered extracellular vesicles carrying let-7a-5p for alleviating inflammation in acute lung injury. J Biomed Sci 2024; 31:30. [PMID: 38500170 PMCID: PMC10949767 DOI: 10.1186/s12929-024-01019-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Accepted: 03/05/2024] [Indexed: 03/20/2024] Open
Abstract
BACKGROUND Acute lung injury (ALI) is a life-threatening respiratory condition characterized by severe inflammation and lung tissue damage, frequently causing rapid respiratory failure and long-term complications. The microRNA let-7a-5p is involved in the progression of lung injury, inflammation, and fibrosis by regulating immune cell activation and cytokine production. This study aims to use an innovative cellular electroporation platform to generate extracellular vesicles (EVs) carring let-7a-5p (EV-let-7a-5p) derived from transfected Wharton's jelly-mesenchymal stem cells (WJ-MSCs) as a potential gene therapy for ALI. METHODS A cellular nanoporation (CNP) method was used to induce the production and release of EV-let-7a-5p from WJ-MSCs transfected with the relevant plasmid DNA. EV-let-7a-5p in the conditioned medium were isolated using a tangential flow filtration (TFF) system. EV characterization followed the minimal consensus guidelines outlined by the International Society for Extracellular Vesicles. We conducted a thorough set of therapeutic assessments, including the antifibrotic effects using a transforming growth factor beta (TGF-β)-induced cell model, the modulation effects on macrophage polarization, and the influence of EV-let-7a-5p in a rat model of hyperoxia-induced ALI. RESULTS The CNP platform significantly increased EV secretion from transfected WJ-MSCs, and the encapsulated let-7a-5p in engineered EVs was markedly higher than that in untreated WJ-MSCs. These EV-let-7a-5p did not influence cell proliferation and effectively mitigated the TGF-β-induced fibrotic phenotype by downregulating SMAD2/3 phosphorylation in LL29 cells. Furthermore, EV-let-7a-5p regulated M2-like macrophage activation in an inflammatory microenvironment and significantly induced interleukin (IL)-10 secretion, demonstrating their modulatory effect on inflammation. Administering EVs from untreated WJ-MSCs slightly improved lung function and increased let-7a-5p expression in plasma in the hyperoxia-induced ALI rat model. In comparison, EV-let-7a-5p significantly reduced macrophage infiltration and collagen deposition while increasing IL-10 expression, causing a substantial improvement in lung function. CONCLUSION This study reveals that the use of the CNP platform to stimulate and transfect WJ-MSCs could generate an abundance of let-7a-5p-enriched EVs, which underscores the therapeutic potential in countering inflammatory responses, fibrotic activation, and hyperoxia-induced lung injury. These results provide potential avenues for developing innovative therapeutic approaches for more effective interventions in ALI.
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Affiliation(s)
- Sin-Yu Chen
- Institute of Biopharmaceutical Sciences, College of Pharmaceutical Sciences, National Yang Ming Chiao Tung University, Taipei, 112304, Taiwan
| | - Yi-Ling Chen
- Division of Cardiology, Department of Internal Medicine, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, 833401, Taiwan
- Institute for Translational Research in Biomedicine, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, 833401, Taiwan
| | - Po-Chen Li
- Institute of Biopharmaceutical Sciences, College of Pharmaceutical Sciences, National Yang Ming Chiao Tung University, Taipei, 112304, Taiwan
| | - Tai-Shan Cheng
- Institute of Biopharmaceutical Sciences, College of Pharmaceutical Sciences, National Yang Ming Chiao Tung University, Taipei, 112304, Taiwan
- Department of Orthopedic Surgery, Far Eastern Memorial Hospital, New Taipei City, 220216, Taiwan
| | - Yeh-Shiu Chu
- Brain Research Center, National Yang Ming Chiao Tung University, Taipei, 112304, Taiwan
| | - Yi-Shan Shen
- Department of Orthopedic Surgery, Far Eastern Memorial Hospital, New Taipei City, 220216, Taiwan
- Department of Biomedical Engineering, National Taiwan University, Taipei, 106319, Taiwan
| | - Hsin-Tung Chen
- Institute of Biopharmaceutical Sciences, College of Pharmaceutical Sciences, National Yang Ming Chiao Tung University, Taipei, 112304, Taiwan
| | - Wei-Ni Tsai
- Institute of Biopharmaceutical Sciences, College of Pharmaceutical Sciences, National Yang Ming Chiao Tung University, Taipei, 112304, Taiwan
| | - Chien-Ling Huang
- Institute of Biopharmaceutical Sciences, College of Pharmaceutical Sciences, National Yang Ming Chiao Tung University, Taipei, 112304, Taiwan
| | | | - Yuan-Chieh Yeh
- Department of Traditional Chinese Medicine, Chang Gung Memorial Hospital, Keelung, 204201, Taiwan
- Program in Molecular Medicine, College of Life Sciences, National Yang Ming Chiao Tung University, Taipei, 112304, Taiwan
| | - Hsiao-Sheng Liu
- Department of Microbiology and Immunology, College of Medicine, National Cheng Kung University, Tainan, 701401, Taiwan
- Center for Cancer Research, College of Medicine, Kaohsiung Medical University, Kaohsiung, 807378, Taiwan
- Teaching and Research Center, Kaohsiung Municipal Siaogang Hospital, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, 812015, Taiwan
| | - Chi-Ling Chiang
- Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, OH, 43210, USA
- Comprehensive Cancer Center, College of Medicine, The Ohio State University, Columbus, OH, 43210, USA
| | - Chih-Hung Chang
- Department of Orthopedic Surgery, Far Eastern Memorial Hospital, New Taipei City, 220216, Taiwan
- Graduate School of Biotechnology and Bioengineering, Yuan Ze University, Taoyuan, 320315, Taiwan
| | | | - Yen-Han Tseng
- Department of Chest Medicine, Taipei Veterans General Hospital, Taipei, 112201, Taiwan
| | - Ly James Lee
- Institute of Biopharmaceutical Sciences, College of Pharmaceutical Sciences, National Yang Ming Chiao Tung University, Taipei, 112304, Taiwan.
- Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, OH, 43210, USA.
- Spot Biosystems Ltd., Palo Alto, CA, 94305, USA.
| | - Hsiu-Jung Liao
- Institute of Biopharmaceutical Sciences, College of Pharmaceutical Sciences, National Yang Ming Chiao Tung University, Taipei, 112304, Taiwan.
- Department of Medical Research, Far Eastern Memorial Hospital, New Taipei City, 220216, Taiwan.
| | - Hon-Kan Yip
- Division of Cardiology, Department of Internal Medicine, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, 833401, Taiwan.
- Institute for Translational Research in Biomedicine, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, 833401, Taiwan.
- Center for Shockwave Medicine and Tissue Engineering, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, 833401, Taiwan.
- Department of Nursing, Asia University, Taichung, 413305, Taiwan.
- Department of Medical Research, China Medical University Hospital, China Medical University, Taichung, 404328, Taiwan.
| | - Chi-Ying F Huang
- Institute of Biopharmaceutical Sciences, College of Pharmaceutical Sciences, National Yang Ming Chiao Tung University, Taipei, 112304, Taiwan.
- Department of Biochemistry, School of Medicine, Kaohsiung Medical University, Kaohsiung, 807378, Taiwan.
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Thompson JM, Watts SW, Terrian L, Contreras GA, Rockwell C, Rendon CJ, Wabel E, Lockwood L, Bhattacharya S, Nault R. A Cell Atlas of Thoracic Aortic Perivascular Adipose Tissue: a focus on mechanotransducers. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.10.09.561581. [PMID: 37873456 PMCID: PMC10592719 DOI: 10.1101/2023.10.09.561581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2023]
Abstract
Perivascular adipose tissue (PVAT) is increasingly recognized for its function in mechanotransduction. To examine the cell-specificity of recognized mechanotransducers we used single nuclei RNA sequencing (snRNAseq) of the thoracic aorta PVAT (taPVAT) from male Dahl SS rats compared to subscapular brown adipose tissue (BAT). Approximately 30,000 nuclei from taPVAT and BAT each were characterized by snRNAseq, identifying 8 major cell types expected and one unexpected (nuclei with oligodendrocyte marker genes). Cell-specific differential gene expression analysis between taPVAT and BAT identified up to 511 genes (adipocytes) with many (≥20%) being unique to individual cell types. Piezo1 was the most highly, widely expressed mechanotransducer. Presence of PIEZO1 in the PVAT was confirmed by RNAscope® and IHC; antagonism of PIEZO1 impaired the PVAT's ability to hold tension. Collectively, the cell compositions of taPVAT and BAT are highly similar, and PIEZO1 is likely a mechanotransducer in taPVAT.
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Affiliation(s)
- Janice M. Thompson
- Department of Pharmacology and Toxicology, Michigan State University, East Lansing, MI, USA
- Denotes individuals contributed equally as first authors to this work
| | - Stephanie W. Watts
- Department of Pharmacology and Toxicology, Michigan State University, East Lansing, MI, USA
- Denotes individuals contributed equally as first authors to this work
| | - Leah Terrian
- Department of Biomedical Engineering, Michigan State University, East Lansing, MI, USA
- Denotes individuals contributed equally as first authors to this work
| | - G. Andres Contreras
- Department of Large Animal Clinical Sciences, Michigan State University, East Lansing, MI, USA
| | - Cheryl Rockwell
- Department of Pharmacology and Toxicology, Michigan State University, East Lansing, MI, USA
| | - C. Javier Rendon
- Department of Large Animal Clinical Sciences, Michigan State University, East Lansing, MI, USA
| | - Emma Wabel
- Department of Pharmacology and Toxicology, Michigan State University, East Lansing, MI, USA
| | - Lizabeth Lockwood
- Department of Pharmacology and Toxicology, Michigan State University, East Lansing, MI, USA
| | - Sudin Bhattacharya
- Department of Biomedical Engineering, Michigan State University, East Lansing, MI, USA
- Department of Pharmacology and Toxicology, Michigan State University, East Lansing, MI, USA
- Institute for Quantitative Health Science and Engineering, Michigan State University, East Lansing, MI, USA
- Institute for Integrative Toxicology, Michigan State University, East Lansing, MI, USA
| | - Rance Nault
- Department of Biochemistry & Molecular Biology, Michigan State University, East Lansing, MI, USA
- Institute for Integrative Toxicology, Michigan State University, East Lansing, MI, USA
- Denotes individuals contributed equally as first authors to this work
- Denotes lead contact
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4
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Jia Y, Zhao J, Yu T, Zhang X, Qi X, Hao T, Jin Z, Zhao X. PSMC3 promotes RNAi by maintaining AGO2 stability through USP14. Cell Mol Biol Lett 2022; 27:111. [PMID: 36528617 PMCID: PMC9759854 DOI: 10.1186/s11658-022-00411-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Accepted: 11/28/2022] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Argonaute 2 (AGO2), the only protein with catalytic activity in the human Argonaute family, is considered as a key component of RNA interference (RNAi) pathway. Here we performed a yeast two-hybrid screen using the human Argonaute 2 PIWI domain as bait to screen for new AGO2-interacting proteins and explored the specific mechanism through a series of molecular biology and biochemistry experiments. METHODS The yeast two-hybrid system was used to screen for AGO2-interacting proteins. Co-immunoprecipitation and immunofluorescence assays were used to further determine interactions and co-localization. Truncated plasmids were constructed to clarify the interaction domain. EGFP fluorescence assay was performed to determine the effect of PSMC3 on RNAi. Regulation of AGO2 protein expression and ubiquitination by PSMC3 and USP14 was examined by western blotting. RT-qPCR assays were applied to assess the level of AGO2 mRNA. Rescue assays were also performed. RESULTS We identified PSMC3 (proteasome 26S subunit, ATPase, 3) as a novel AGO2 binding partner. Biochemical and bioinformatic analysis demonstrates that this interaction is performed in an RNA-independent manner and the N-terminal coiled-coil motif of PSMC3 is required. Depletion of PSMC3 impairs the activity of the targeted cleavage mediated by small RNAs. Further studies showed that depletion of PSMC3 decreased AGO2 protein amount, whereas PSMC3 overexpression increased the expression of AGO2 at a post-translational level. Cycloheximide treatment indicated that PSMC3 depletion resulted in a decrease in cytoplasmic AGO2 amount due to an increase in AGO2 protein turnover. The absence of PSMC3 promoted ubiquitination of AGO2, resulting in its degradation by the 26S proteasome. Mechanistically, PSMC3 assists in the interaction of AGO2 with the deubiquitylase USP14(ubiquitin specific peptidase 14) and facilitates USP14-mediated deubiquitination of AGO2. As a result, AGO2 is stabilized, which then promotes RNAi. CONCLUSION Our findings demonstrate that PSMC3 plays an essential role in regulating the stability of AGO2 and thus in maintaining effective RNAi.
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Affiliation(s)
- Yan Jia
- grid.265021.20000 0000 9792 1228Department of Pathogen Biology, School of Basic Medical Sciences, Tianjin Medical University, No. 22 Qi-Xiang- Tai Road, Tianjin, 300070 China
| | - Jianing Zhao
- grid.265021.20000 0000 9792 1228Department of Pathogen Biology, School of Basic Medical Sciences, Tianjin Medical University, No. 22 Qi-Xiang- Tai Road, Tianjin, 300070 China
| | - Tao Yu
- grid.265021.20000 0000 9792 1228Department of Pathogen Biology, School of Basic Medical Sciences, Tianjin Medical University, No. 22 Qi-Xiang- Tai Road, Tianjin, 300070 China
| | - Xue Zhang
- grid.265021.20000 0000 9792 1228Department of Pathogen Biology, School of Basic Medical Sciences, Tianjin Medical University, No. 22 Qi-Xiang- Tai Road, Tianjin, 300070 China
| | - Xiaozhen Qi
- grid.265021.20000 0000 9792 1228Department of Pathogen Biology, School of Basic Medical Sciences, Tianjin Medical University, No. 22 Qi-Xiang- Tai Road, Tianjin, 300070 China
| | - Tongxin Hao
- grid.265021.20000 0000 9792 1228Department of Pathogen Biology, School of Basic Medical Sciences, Tianjin Medical University, No. 22 Qi-Xiang- Tai Road, Tianjin, 300070 China
| | - Zeyuan Jin
- grid.265021.20000 0000 9792 1228Department of Pathogen Biology, School of Basic Medical Sciences, Tianjin Medical University, No. 22 Qi-Xiang- Tai Road, Tianjin, 300070 China
| | - Xiaoqing Zhao
- grid.452704.00000 0004 7475 0672Department of Clinical Laboratory, The Second Hospital of Shandong University, Jinan, Shandong China
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Zheng M, Kim DY, Sung JH. Ion channels and transporters in adipose-derived stem cells. JOURNAL OF PHARMACEUTICAL INVESTIGATION 2019. [DOI: 10.1007/s40005-018-00413-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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6
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Nwanaji-Enwerem JC, Colicino E, Dai L, Di Q, Just AC, Hou L, Vokonas P, De Vivo I, Lemos B, Lu Q, Weisskopf MG, Baccarelli AA, Schwartz JD. miRNA processing gene polymorphisms, blood DNA methylation age and long-term ambient PM 2.5 exposure in elderly men. Epigenomics 2017; 9:1529-1542. [PMID: 29106301 PMCID: PMC5704092 DOI: 10.2217/epi-2017-0094] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Accepted: 09/06/2017] [Indexed: 01/26/2023] Open
Abstract
AIM We tested whether genetic variation in miRNA processing genes modified the association of PM2.5 with DNA methylation (DNAm) age. PATIENTS & METHODS We conducted a repeated measures study based on 552 participants from the Normative Aging Study with multiple visits between 2000 and 2011 (n = 940 visits). Address-level 1-year PM2.5 exposures were estimated using the GEOS-chem model. DNAm-age and a panel of 14 SNPs in miRNA processing genes were measured from participant blood samples. RESULTS & CONCLUSION In fully adjusted linear mixed-effects models, having at least one copy of the minor rs4961280 [AGO2] allele was associated with a lower DNAm-age (β = -1.13; 95% CI: -2.26 to -0.002). However, the association of PM2.5 with DNAm-age was significantly (Pinteraction = 0.01) weaker in homozygous carriers of the major rs4961280 [AGO2] allele (β = 0.38; 95% CI: -0.20 to 0.96) when compared with all other participants (β = 1.58; 95% CI: 0.76 to 2.39). Our results suggest that miRNA processing impacts DNAm-age relationships. Graphical abstract: miRNA processing AGO2 polymorphism (rs4961280) modifies the association of long-term ambient fine particle exposure with blood DNA methylation age [Formula: see text] The graph depicts lines from a fully adjusted linear regression model with fine particle exposure levels ranging from the tenth to the ninetieth percentile, all other continuous variables held constant at their means, and all other categorical variables held at their most frequent level.
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Affiliation(s)
| | - Elena Colicino
- Department of Environmental Health Sciences, Columbia Mailman School of Public Health, New York, NY, USA
| | - Lingzhen Dai
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Qian Di
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Allan C Just
- Department of Environmental Medicine & Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Lifang Hou
- Center for Population Epigenetics, Department of Preventive Medicine, Robert H Lurie Comprehensive Cancer Center, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Pantel Vokonas
- VA Normative Aging Study, Veterans Affairs Boston Healthcare System & the Department of Medicine, Boston University School of Medicine, Boston, MA, USA
| | - Immaculata De Vivo
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Bernardo Lemos
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Quan Lu
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Marc G Weisskopf
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Andrea A Baccarelli
- Department of Environmental Health Sciences, Columbia Mailman School of Public Health, New York, NY, USA
| | - Joel D Schwartz
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, USA
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Paces J, Nic M, Novotny T, Svoboda P. Literature review of baseline information to support the risk assessment of RNAi‐based GM plants. ACTA ACUST UNITED AC 2017. [PMCID: PMC7163844 DOI: 10.2903/sp.efsa.2017.en-1246] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Jan Paces
- Institute of Molecular Genetics of the Academy of Sciences of the Czech Republic (IMG)
| | | | | | - Petr Svoboda
- Institute of Molecular Genetics of the Academy of Sciences of the Czech Republic (IMG)
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8
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Ye Z, Jin H, Qian Q. Argonaute 2: A Novel Rising Star in Cancer Research. J Cancer 2015; 6:877-82. [PMID: 26284139 PMCID: PMC4532985 DOI: 10.7150/jca.11735] [Citation(s) in RCA: 75] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2015] [Accepted: 04/15/2015] [Indexed: 12/18/2022] Open
Abstract
AGO2 (Argonaute 2, EIF2C2) is the only member in AGO family with catalytic activity and of extreme importance during small RNAs guided gene silencing processes. The structural investigations have provided insights into details and functional mechanisms of the four major domains within AGO2. As a multifunction player, AGO2 has been revealed involved in tumorgenesis through miRNAs-dependent or independent ways. And nowadays, AGO2 has also been more importantly found ectopically over-expressed in carcinomas and closely associated with aspects of cancers in means of interacting with well-known tumor factors. Here, we provide a review on structural insights, functional mechanisms, novel roles and relationship with carcinomas of AGO2.
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Affiliation(s)
- ZhenLong Ye
- Laboratory of Viral and Gene Therapy, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai 200438, China
| | - HuaJun Jin
- Laboratory of Viral and Gene Therapy, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai 200438, China
| | - QiJun Qian
- Laboratory of Viral and Gene Therapy, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai 200438, China
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9
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Huang JT, Wang J, Srivastava V, Sen S, Liu SM. MicroRNA Machinery Genes as Novel Biomarkers for Cancer. Front Oncol 2014; 4:113. [PMID: 24904827 PMCID: PMC4032885 DOI: 10.3389/fonc.2014.00113] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2014] [Accepted: 05/01/2014] [Indexed: 12/25/2022] Open
Abstract
MicroRNAs (miRNAs) directly and indirectly affect tumorigenesis. To be able to perform their myriad roles, miRNA machinery genes, such as Drosha, DGCR8, Dicer1, XPO5, TRBP, and AGO2, must generate precise miRNAs. These genes have specific expression patterns, protein-binding partners, and biochemical capabilities in different cancers. Our preliminary analysis of data from The Cancer Genome Atlas consortium on multiple types of cancer revealed significant alterations in these miRNA machinery genes. Here, we review their biological structures and functions with an eye toward understanding how they could serve as cancer biomarkers.
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Affiliation(s)
- Jing-Tao Huang
- Center for Gene Diagnosis, Zhongnan Hospital of Wuhan University , Wuhan , China
| | - Jin Wang
- Department of Translational Molecular Pathology, The University of Texas MD Anderson Cancer Center , Houston, TX , USA
| | - Vibhuti Srivastava
- Department of Translational Molecular Pathology, The University of Texas MD Anderson Cancer Center , Houston, TX , USA
| | - Subrata Sen
- Department of Translational Molecular Pathology, The University of Texas MD Anderson Cancer Center , Houston, TX , USA
| | - Song-Mei Liu
- Center for Gene Diagnosis, Zhongnan Hospital of Wuhan University , Wuhan , China
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WANG MIN, REN DONG, GUO WEI, WANG ZEYU, HUANG SHUAI, DU HONG, SONG LIBING, PENG XINSHENG. Loss of miR-100 enhances migration, invasion, epithelialmesenchymal transition and stemness properties in prostate cancer cells through targeting Argonaute 2. Int J Oncol 2014; 45:362-72. [DOI: 10.3892/ijo.2014.2413] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2014] [Accepted: 04/17/2014] [Indexed: 11/06/2022] Open
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11
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Meloche J, Pflieger A, Vaillancourt M, Paulin R, Potus F, Zervopoulos S, Graydon C, Courboulin A, Breuils-Bonnet S, Tremblay E, Couture C, Michelakis ED, Provencher S, Bonnet S. Role for DNA damage signaling in pulmonary arterial hypertension. Circulation 2013; 129:786-97. [PMID: 24270264 DOI: 10.1161/circulationaha.113.006167] [Citation(s) in RCA: 186] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Pulmonary arterial hypertension (PAH) is associated with sustained inflammation known to promote DNA damage. Despite these unfavorable environmental conditions, PAH pulmonary arterial smooth muscle cells (PASMCs) exhibit, in contrast to healthy PASMCs, a pro-proliferative and anti-apoptotic phenotype, sustained in time by the activation of miR-204, nuclear factor of activated T cells, and hypoxia-inducible factor 1-α. We hypothesized that PAH-PASMCs have increased the activation of poly(ADP-ribose) polymerase-1 (PARP-1), a critical enzyme implicated in DNA repair, allowing proliferation despite the presence of DNA-damaging insults, eventually leading to PAH. METHODS AND RESULTS Human PAH distal pulmonary arteries and cultured PAH-PASMCs exhibit increased DNA damage markers (53BP1 and γ-H2AX) and an overexpression of PARP-1 (immunoblot and activity assay), in comparison with healthy tissues/cells. Healthy PASMCs treated with a clinically relevant dose of tumor necrosis factor-α harbored a similar phenotype, suggesting that inflammation induces DNA damage and PARP-1 activation in PAH. We also showed that PARP-1 activation accounts for miR-204 downregulation (quantitative reverse transcription polymerase chain reaction) and the subsequent activation of the transcription factors nuclear factor of activated T cells and hypoxia-inducible factor 1-α in PAH-PASMCs, previously shown to be critical for PAH in several models. These effects resulted in PASMC proliferation (Ki67, proliferating cell nuclear antigen, and WST1 assays) and resistance to apoptosis (terminal deoxynucleotidyl transferase dUTP nick end labeling and Annexin V assays). In vivo, the clinically available PARP inhibitor ABT-888 reversed PAH in 2 experimental rat models (Sugen/hypoxia and monocrotaline). CONCLUSIONS These results show for the first time that the DNA damage/PARP-1 signaling pathway is important for PAH development and provide a new therapeutic target for this deadly disease with high translational potential.
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Affiliation(s)
- Jolyane Meloche
- Department of Medicine, Laval University, Pulmonary Hypertension Research Group, IUCPQ Research Centre, Québec, Canada (J.M., A.P., M.V., F.P., C.G., A.C., S.B.-B., E.T., C.C., S.P., S.B.); and Vascular Biology Research Group, Department of Medicine, University of Alberta, Edmonton, Canada (R.P., S.Z., E.D.M.)
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