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Lee HS, Noh JY, Song JY, Cheong HJ, Kim WJ. Metformin reduces the risk of developing influenza A virus related cardiovascular disease. Heliyon 2023; 9:e20284. [PMID: 37810823 PMCID: PMC10556598 DOI: 10.1016/j.heliyon.2023.e20284] [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: 04/20/2023] [Revised: 09/12/2023] [Accepted: 09/18/2023] [Indexed: 10/10/2023] Open
Abstract
This study investigated the drug repositioning potential of metformin for cardiovascular risk due to influenza A virus infection. Statistical analysis was performed to analyze factors related to the risk of death after IAV infection in diabetic patients. Through in vitro and in vivo experiments, the effect of metformin on influenza A virus infection in non-diabetic conditions was analyzed. In logistic regression analysis, influenza vaccination (OR = 0.378, p-value = 0.007, 0.186 < 95% C·I < 0.768) and metformin treatment (OR = 0.380, p-value = 0.016, 0.173 < 95% C·I < 0.835) were associated with a decreased influenza-related mortality in diabetic patients. In vitro and in vivo studies showed that viral replication and influenza A virus-induced cytokine expression were inhibited by metformin. In particular, MCP-1 and IP-10, cytokines related to cell infiltration and cardiovascular disease development, were significantly reduced by metformin under influenza A virus infection condition. As a result, the acute exacerbation of atherosclerosis caused by influenza A virus in mouse aorta was inhibited by metformin. In addition, we found that regulation of AKT/MAPK signaling plays an important role in the mechanism of metformin. In conclusion, we demonstrated the potential and mechanism of metformin as a treatment for acute exacerbation of atherosclerosis caused by influenza A virus infection.
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Affiliation(s)
- Han Sol Lee
- Asia Pacific Influenza Institute, Guro Hospital, Korea University College of Medicine, Seoul, Republic of Korea
| | - Ji Yun Noh
- Division of Infectious Diseases, Department of Internal Medicine, Guro Hospital, Korea University College of Medicine, Seoul, Republic of Korea
| | - Joon Young Song
- Division of Infectious Diseases, Department of Internal Medicine, Guro Hospital, Korea University College of Medicine, Seoul, Republic of Korea
| | - Hee Jin Cheong
- Asia Pacific Influenza Institute, Guro Hospital, Korea University College of Medicine, Seoul, Republic of Korea
- Division of Infectious Diseases, Department of Internal Medicine, Guro Hospital, Korea University College of Medicine, Seoul, Republic of Korea
| | - Woo Joo Kim
- Asia Pacific Influenza Institute, Guro Hospital, Korea University College of Medicine, Seoul, Republic of Korea
- Division of Infectious Diseases, Department of Internal Medicine, Guro Hospital, Korea University College of Medicine, Seoul, Republic of Korea
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Nguyen MTH, Imanishi M, Li S, Chau K, Banerjee P, Velatooru LR, Ko KA, Samanthapudi VSK, Gi YJ, Lee LL, Abe RJ, McBeath E, Deswal A, Lin SH, Palaskas NL, Dantzer R, Fujiwara K, Borchrdt MK, Turcios EB, Olmsted-Davis EA, Kotla S, Cooke JP, Wang G, Abe JI, Le NT. Endothelial activation and fibrotic changes are impeded by laminar flow-induced CHK1-SENP2 activity through mechanisms distinct from endothelial-to-mesenchymal cell transition. Front Cardiovasc Med 2023; 10:1187490. [PMID: 37711550 PMCID: PMC10499395 DOI: 10.3389/fcvm.2023.1187490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Accepted: 07/24/2023] [Indexed: 09/16/2023] Open
Abstract
Background The deSUMOylase sentrin-specific isopeptidase 2 (SENP2) plays a crucial role in atheroprotection. However, the phosphorylation of SENP2 at T368 under disturbed flow (D-flow) conditions hinders its nuclear function and promotes endothelial cell (EC) activation. SUMOylation has been implicated in D-flow-induced endothelial-to-mesenchymal transition (endoMT), but the precise role of SENP2 in counteracting this process remains unclear. Method We developed a phospho-specific SENP2 S344 antibody and generated knock-in (KI) mice with a phospho-site mutation of SENP2 S344A using CRISPR/Cas9 technology. We then investigated the effects of SENP2 S344 phosphorylation under two distinct flow patterns and during hypercholesteremia (HC)-mediated EC activation. Result Our findings demonstrate that laminar flow (L-flow) induces phosphorylation of SENP2 at S344 through the activation of checkpoint kinase 1 (CHK1), leading to the inhibition of ERK5 and p53 SUMOylation and subsequent suppression of EC activation. We observed a significant increase in lipid-laden lesions in both the aortic arch (under D-flow) and descending aorta (under L-flow) of female hypercholesterolemic SENP2 S344A KI mice. In male hypercholesterolemic SENP2 S344A KI mice, larger lipid-laden lesions were only observed in the aortic arch area, suggesting a weaker HC-mediated atherogenesis in male mice compared to females. Ionizing radiation (IR) reduced CHK1 expression and SENP2 S344 phosphorylation, attenuating the pro-atherosclerotic effects observed in female SENP2 S344A KI mice after bone marrow transplantation (BMT), particularly in L-flow areas. The phospho-site mutation SENP2 S344A upregulates processes associated with EC activation, including inflammation, migration, and proliferation. Additionally, fibrotic changes and up-regulated expression of EC marker genes were observed. Apoptosis was augmented in ECs derived from the lungs of SENP2 S344A KI mice, primarily through the inhibition of ERK5-mediated expression of DNA damage-induced apoptosis suppressor (DDIAS). Summary In this study, we have revealed a novel mechanism underlying the suppressive effects of L-flow on EC inflammation, migration, proliferation, apoptosis, and fibrotic changes through promoting CHK1-induced SENP2 S344 phosphorylation. The phospho-site mutation SENP2 S344A responds to L-flow through a distinct mechanism, which involves the upregulation of both mesenchymal and EC marker genes.
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Affiliation(s)
- Minh T. H. Nguyen
- Center for Cardiovascular Regeneration, Department of Cardiovascular Sciences, Houston Methodist Research Institute, Houston, TX, United States
- Department of Life Science, Vietnam Academy of Science and Technology, University of Science and Technology of Hanoi, Hanoi, Vietnam
| | - Masaki Imanishi
- Department of Cardiology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Shengyu Li
- Center for Cardiovascular Regeneration, Department of Cardiovascular Sciences, Houston Methodist Research Institute, Houston, TX, United States
| | - Khanh Chau
- Center for Cardiovascular Regeneration, Department of Cardiovascular Sciences, Houston Methodist Research Institute, Houston, TX, United States
| | - Priyanka Banerjee
- Center for Cardiovascular Regeneration, Department of Cardiovascular Sciences, Houston Methodist Research Institute, Houston, TX, United States
| | - Loka reddy Velatooru
- Center for Cardiovascular Regeneration, Department of Cardiovascular Sciences, Houston Methodist Research Institute, Houston, TX, United States
| | - Kyung Ae Ko
- Department of Cardiology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | | | - Young J. Gi
- Department of Cardiology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Ling-Ling Lee
- Department of Cardiology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Rei J. Abe
- Center for Cardiovascular Regeneration, Department of Cardiovascular Sciences, Houston Methodist Research Institute, Houston, TX, United States
| | - Elena McBeath
- Department of Cardiology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Anita Deswal
- Department of Cardiology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Steven H. Lin
- Department of Cardiology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Nicolas L. Palaskas
- Department of Cardiology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Robert Dantzer
- Department of Symptom Research, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Keigi Fujiwara
- Department of Cardiology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Mae K. Borchrdt
- Center for Cardiovascular Regeneration, Department of Cardiovascular Sciences, Houston Methodist Research Institute, Houston, TX, United States
| | - Estefani Berrios Turcios
- Center for Cardiovascular Regeneration, Department of Cardiovascular Sciences, Houston Methodist Research Institute, Houston, TX, United States
| | - Elizabeth A. Olmsted-Davis
- Center for Cardiovascular Regeneration, Department of Cardiovascular Sciences, Houston Methodist Research Institute, Houston, TX, United States
| | - Sivareddy Kotla
- Department of Cardiology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - John P. Cooke
- Center for Cardiovascular Regeneration, Department of Cardiovascular Sciences, Houston Methodist Research Institute, Houston, TX, United States
| | - Guangyu Wang
- Center for Cardiovascular Regeneration, Department of Cardiovascular Sciences, Houston Methodist Research Institute, Houston, TX, United States
| | - Jun-ichi Abe
- Department of Cardiology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Nhat-Tu Le
- Center for Cardiovascular Regeneration, Department of Cardiovascular Sciences, Houston Methodist Research Institute, Houston, TX, United States
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Ni Z, Lyu L, Gong H, Du L, Wen Z, Jiang H, Yang H, Hu Y, Zhang B, Xu Q, Guo X, Chen T. Multilineage commitment of Sca-1 + cells in reshaping vein grafts. Theranostics 2023; 13:2154-2175. [PMID: 37153747 PMCID: PMC10157743 DOI: 10.7150/thno.77735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Accepted: 03/23/2023] [Indexed: 05/10/2023] Open
Abstract
Vein graft failure remains a significant clinical problem. Similar to other vascular diseases, stenosis of vein grafts is caused by several cell lines; however, the sources of these cells remain unclear. The objective of this study was to investigate the cellular sources that reshape vein grafts. By analyzing transcriptomics data and constructing inducible lineage-tracing mouse models, we investigated the cellular components of vein grafts and their fates. The sc-RNAseq data suggested that Sca-1+ cells were vital players in vein grafts and might serve as progenitors for multilineage commitment. By generating a vein graft model in which the venae cavae from C57BL/6J wild-type mice were transplanted adjacent to the carotid arteries of Sca-1(Ly6a)-CreERT2; Rosa26-tdTomato mice, we demonstrated that the recipient Sca-1+ cells dominated reendothelialization and the formation of adventitial microvessels, especially at the perianastomotic regions. In turn, using chimeric mouse models, we confirmed that the Sca-1+ cells that participated in reendothelialization and the formation of adventitial microvessels all had a non-bone-marrow origin, whereas bone-marrow-derived Sca-1+ cells differentiated into inflammatory cells in vein grafts. Furthermore, using a parabiosis mouse model, we confirmed that non-bone-marrow-derived circulatory Sca-1+ cells were vital for the formation of adventitial microvessels, whereas Sca-1+ cells derived from local carotid arteries were the source of endothelium restoration. Using another mouse model in which venae cavae from Sca-1 (Ly6a)-CreERT2; Rosa26-tdTomato mice were transplanted adjacent to the carotid arteries of C57BL/6J wild-type mice, we confirmed that the donor Sca-1+ cells were mainly responsible for smooth muscle cells commitment in the neointima, particularly at the middle bodies of vein grafts. In addition, we provided evidence that knockdown/knockout of Pdgfrα in Sca-1+ cells decreased the cell potential to generate SMCs in vitro and decreased number of intimal SMCs in vein grafts. Our findings provided cell atlases of vein grafts, which demonstrated that recipient carotid arteries, donor veins, non-bone-marrow circulation, and the bone marrow provided diverse Sca-1+ cells/progenitors that participated in the reshaping of vein grafts.
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Affiliation(s)
- Zhichao Ni
- Department of Cardiology, the First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Lingxia Lyu
- Department of Cardiology, the First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Hui Gong
- Department of Cardiology, the First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Luping Du
- Department of Cardiology, the First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Zuoshi Wen
- Department of Cardiology, the First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Hua Jiang
- Department of kidney disease center, First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, Zhejiang, PR China
| | - Hao Yang
- Department of kidney disease center, First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, Zhejiang, PR China
| | - Yanhua Hu
- Department of Cardiology, the First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Bohuan Zhang
- Department of Cardiology, the First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Qingbo Xu
- Department of Cardiology, the First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
- ✉ Corresponding authors: Qingbo Xu, MD. PhD. , Tel: +86 571-87236500, Fax: +86 571 4008306430 Department of Cardiology, the First Affiliated Hospital, Zhejiang University Medical School, 79 Qingchun Road, Hangzhou 310003, Hangzhou, China. Or Xiaogang Guo, MD. PhD. , Tel: +86 571-87236500 Department of Cardiology, the First Affiliated Hospital, Zhejiang University Medical School, 79 Qingchun Road, Hangzhou 310003, Hangzhou, China. Or Ting Chen, MD. PhD. , Tel: +86 15067127900 Mailing Address: Department of Cardiology, the First Affiliated Hospital, Zhejiang University Medical School, 79 Qingchun Road, Hangzhou 310003, Hangzhou, China
| | - Xiaogang Guo
- Department of Cardiology, the First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
- ✉ Corresponding authors: Qingbo Xu, MD. PhD. , Tel: +86 571-87236500, Fax: +86 571 4008306430 Department of Cardiology, the First Affiliated Hospital, Zhejiang University Medical School, 79 Qingchun Road, Hangzhou 310003, Hangzhou, China. Or Xiaogang Guo, MD. PhD. , Tel: +86 571-87236500 Department of Cardiology, the First Affiliated Hospital, Zhejiang University Medical School, 79 Qingchun Road, Hangzhou 310003, Hangzhou, China. Or Ting Chen, MD. PhD. , Tel: +86 15067127900 Mailing Address: Department of Cardiology, the First Affiliated Hospital, Zhejiang University Medical School, 79 Qingchun Road, Hangzhou 310003, Hangzhou, China
| | - Ting Chen
- Department of Cardiology, the First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
- Alibaba-Zhejiang University Joint Research Center of Future Digital Healthcare, Hangzhou, China
- ✉ Corresponding authors: Qingbo Xu, MD. PhD. , Tel: +86 571-87236500, Fax: +86 571 4008306430 Department of Cardiology, the First Affiliated Hospital, Zhejiang University Medical School, 79 Qingchun Road, Hangzhou 310003, Hangzhou, China. Or Xiaogang Guo, MD. PhD. , Tel: +86 571-87236500 Department of Cardiology, the First Affiliated Hospital, Zhejiang University Medical School, 79 Qingchun Road, Hangzhou 310003, Hangzhou, China. Or Ting Chen, MD. PhD. , Tel: +86 15067127900 Mailing Address: Department of Cardiology, the First Affiliated Hospital, Zhejiang University Medical School, 79 Qingchun Road, Hangzhou 310003, Hangzhou, China
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Tian Y, Fopiano KA, Buncha V, Lang L, Rudic RD, Filosa JA, Dou H, Bagi Z. Aging-induced impaired endothelial wall shear stress mechanosensing causes arterial remodeling via JAM-A/F11R shedding by ADAM17. GeroScience 2022; 44:349-369. [PMID: 34718985 PMCID: PMC8810930 DOI: 10.1007/s11357-021-00476-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Accepted: 10/08/2021] [Indexed: 11/25/2022] Open
Abstract
Physiological and pathological vascular remodeling is uniquely driven by mechanical forces from blood flow in which wall shear stress (WSS) mechanosensing by the vascular endothelium plays a pivotal role. This study aimed to determine the novel role for a disintegrin and metalloproteinase 17 (ADAM17) in impaired WSS mechanosensing, which was hypothesized to contribute to aging-associated abnormal vascular remodeling. Without changes in arterial blood pressure and blood flow rate, skeletal muscle resistance arteries of aged mice (30-month-old vs. 12-week-old) exhibited impaired WSS mechanosensing and displayed inward hypertrophic arterial remodeling. These vascular changes were recapitulated by in vivo confined, AAV9-mediated overexpression of ADAM17 in the resistance arteries of young mice. An aging-related increase in ADAM17 expression reduced the endothelial junction level of its cleavage substrate, junctional adhesion molecule-A/F11 receptor (JAM-A/F11R). In cultured endothelial cells subjected to steady WSS ADAM17 activation or JAM-A/F11R knockdown inhibited WSS mechanosensing. The ADAM17-activation induced, impaired WSS mechanosensing was normalized by overexpression of ADAM17 cleavage resistant, mutated JAM-AV232Y both in cultured endothelial cells and in resistance arteries of aged mice, in vivo. These data demonstrate a novel role for ADAM17 in JAM-A/F11R cleavage-mediated impaired endothelial WSS mechanosensing and subsequently developed abnormal arterial remodeling in aging. ADAM17 could prove to be a key regulator of WSS mechanosensing, whereby it can also play a role in pathological vascular remodeling in diseases.
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Affiliation(s)
- Yanna Tian
- Department of Physiology, Medical College of Georgia, Augusta University, Augusta, GA, 30912, USA
| | - Katie Anne Fopiano
- Department of Physiology, Medical College of Georgia, Augusta University, Augusta, GA, 30912, USA
| | - Vadym Buncha
- Department of Physiology, Medical College of Georgia, Augusta University, Augusta, GA, 30912, USA
| | - Liwei Lang
- Department of Physiology, Medical College of Georgia, Augusta University, Augusta, GA, 30912, USA
| | - R Daniel Rudic
- Department of Pharmacology and Toxicology, Medical College of Georgia, Augusta University, Augusta, GA, 30912, USA
| | - Jessica A Filosa
- Department of Physiology, Medical College of Georgia, Augusta University, Augusta, GA, 30912, USA
| | - Huijuan Dou
- Department of Physiology, Medical College of Georgia, Augusta University, Augusta, GA, 30912, USA
- Department of Medicine, Columbia University Medical Center, New York, NY, 10032, USA
| | - Zsolt Bagi
- Department of Physiology, Medical College of Georgia, Augusta University, Augusta, GA, 30912, USA.
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5
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Heumüller AW, Jones AN, Mourão A, Klangwart M, Shi C, Wittig I, Fischer A, Muhly-Reinholz M, Buchmann GK, Dieterich C, Potente M, Braun T, Grote P, Jaé N, Sattler M, Dimmeler S. Locus-Conserved Circular RNA cZNF292 Controls Endothelial Cell Flow Responses. Circ Res 2022; 130:67-79. [PMID: 34789007 DOI: 10.1161/circresaha.121.320029] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Accepted: 11/17/2021] [Indexed: 01/30/2023]
Abstract
BACKGROUND Circular RNAs (circRNAs) are generated by back splicing of mostly mRNAs and are gaining increasing attention as a novel class of regulatory RNAs that control various cellular functions. However, their physiological roles and functional conservation in vivo are rarely addressed, given the inherent challenges of their genetic inactivation. Here, we aimed to identify locus conserved circRNAs in mice and humans, which can be genetically deleted due to retained intronic elements not contained in the mRNA host gene to eventually address functional conservation. METHODS AND RESULTS Combining published endothelial RNA-sequencing data sets with circRNAs of the circATLAS databank, we identified locus-conserved circRNA retaining intronic elements between mice and humans. CRISPR/Cas9 mediated genetic depletion of the top expressed circRNA cZfp292 resulted in an altered endothelial morphology and aberrant flow alignment in the aorta in vivo. Consistently, depletion of cZNF292 in endothelial cells in vitro abolished laminar flow-induced alterations in cell orientation, paxillin localization and focal adhesion organization. Mechanistically, we identified the protein SDOS (syndesmos) to specifically interact with cZNF292 in endothelial cells by RNA-affinity purification and subsequent mass spectrometry analysis. Silencing of SDOS or its protein binding partner Syndecan-4, or mutation of the SDOS-cZNF292 binding site, prevented laminar flow-induced cytoskeletal reorganization thereby recapitulating cZfp292 knockout phenotypes. CONCLUSIONS Together, our data reveal a hitherto unknown role of cZNF292/cZfp292 in endothelial flow responses, which influences endothelial shape.
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Affiliation(s)
- Andreas W Heumüller
- Institute of Cardiovascular Regeneration (A.W.H., M.K., A.F., M.M.R., P.G., N.J., S.D.), Goethe University, Frankfurt, Germany
- Faculty for Biological Sciences (A.W.H.), Goethe University, Frankfurt, Germany
| | - Alisha N Jones
- Institute of Structural Biology, Helmholtz Zentrum München, Neuherberg, Germany (A.N.J., A.M., M.S.)
- Biomolecular NMR and Center for Integrated Protein Science Munich at Department Chemie, Technical University of Munich, Garching, Germany (A.N.J., A.M., M.S.)
| | - André Mourão
- Institute of Structural Biology, Helmholtz Zentrum München, Neuherberg, Germany (A.N.J., A.M., M.S.)
- Biomolecular NMR and Center for Integrated Protein Science Munich at Department Chemie, Technical University of Munich, Garching, Germany (A.N.J., A.M., M.S.)
| | - Marius Klangwart
- Institute of Cardiovascular Regeneration (A.W.H., M.K., A.F., M.M.R., P.G., N.J., S.D.), Goethe University, Frankfurt, Germany
| | - Chenyue Shi
- Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany (C.S., M.P., T.B.)
| | - Ilka Wittig
- Functional Proteomics, Institute for Cardiovascular Physiology (I.W.), Goethe University, Frankfurt, Germany
- German Center for Cardiovascular Research (DZHK), Frankfurt, Germany (I.W., M.P., T.B., S.D.)
| | - Ariane Fischer
- Institute of Cardiovascular Regeneration (A.W.H., M.K., A.F., M.M.R., P.G., N.J., S.D.), Goethe University, Frankfurt, Germany
| | - Marion Muhly-Reinholz
- Institute of Cardiovascular Regeneration (A.W.H., M.K., A.F., M.M.R., P.G., N.J., S.D.), Goethe University, Frankfurt, Germany
| | - Giulia K Buchmann
- Institute for Cardiovascular Physiology (G.K.B.), Goethe University, Frankfurt, Germany
| | - Christoph Dieterich
- Institute of Cardiovascular Regeneration (A.W.H., M.K., A.F., M.M.R., P.G., N.J., S.D.), Goethe University, Frankfurt, Germany
- Department of Cardiology, Angiology, and Pneumology, University Hospital Heidelberg, Germany (C.D.)
| | - Michael Potente
- Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany (C.S., M.P., T.B.)
- Berlin Institute of Health at Charité - Universitätsmedizin Berlin, Germany (M.P.)
- Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), Berlin, Germany (M.P.)
- German Center for Cardiovascular Research (DZHK), Frankfurt, Germany (I.W., M.P., T.B., S.D.)
- Cardio-Pulmonary Institute (CPI), Frankfurt, Germany (M.P., T.B., S.D.)
| | - Thomas Braun
- Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany (C.S., M.P., T.B.)
- German Center for Cardiovascular Research (DZHK), Frankfurt, Germany (I.W., M.P., T.B., S.D.)
- Cardio-Pulmonary Institute (CPI), Frankfurt, Germany (M.P., T.B., S.D.)
| | - Phillip Grote
- Institute of Cardiovascular Regeneration (A.W.H., M.K., A.F., M.M.R., P.G., N.J., S.D.), Goethe University, Frankfurt, Germany
| | - Nicolas Jaé
- Institute of Cardiovascular Regeneration (A.W.H., M.K., A.F., M.M.R., P.G., N.J., S.D.), Goethe University, Frankfurt, Germany
| | - Michael Sattler
- Institute of Structural Biology, Helmholtz Zentrum München, Neuherberg, Germany (A.N.J., A.M., M.S.)
- Biomolecular NMR and Center for Integrated Protein Science Munich at Department Chemie, Technical University of Munich, Garching, Germany (A.N.J., A.M., M.S.)
| | - Stefanie Dimmeler
- Institute of Cardiovascular Regeneration (A.W.H., M.K., A.F., M.M.R., P.G., N.J., S.D.), Goethe University, Frankfurt, Germany
- Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany (C.S., M.P., T.B.)
- German Center for Cardiovascular Research (DZHK), Frankfurt, Germany (I.W., M.P., T.B., S.D.)
- Cardio-Pulmonary Institute (CPI), Frankfurt, Germany (M.P., T.B., S.D.)
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6
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Three-Dimensional Visualization of Atherosclerotic Vessels by Tissue Clearing and Light-Sheet Fluorescence Microscopy. Methods Mol Biol 2022; 2419:841-851. [PMID: 35238005 PMCID: PMC9590274 DOI: 10.1007/978-1-0716-1924-7_51] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Although arteries and atherosclerotic plaques are three-dimensional structures, the evaluation of plaque size and morphology in preclinical models of atherosclerosis is typically performed in two dimensions by histological analysis. Here, we describe a method to visualize arteries and atherosclerotic plaques in three dimensions. This method combines AdipoClear, a procedure that achieves whole tissue immunolabeling and clearing, and light-sheet fluorescence microscopy, which generates a three-dimensional reconstruction of vessel architecture including atherosclerotic lesions if present. This approach reveals the volume, geometry, acellular component and surface of atherosclerotic plaques as well as the spatial position of the lesion in relation to the affected artery.
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7
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Mojiri A, Walther BK, Jiang C, Matrone G, Holgate R, Xu Q, Morales E, Wang G, Gu J, Wang R, Cooke JP. Telomerase therapy reverses vascular senescence and extends lifespan in progeria mice. Eur Heart J 2021; 42:4352-4369. [PMID: 34389865 PMCID: PMC8603239 DOI: 10.1093/eurheartj/ehab547] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/05/2020] [Revised: 03/29/2021] [Accepted: 08/12/2021] [Indexed: 12/28/2022] Open
Abstract
AIMS Hutchinson-Gilford progeria syndrome (HGPS) is an accelerated ageing syndrome associated with premature vascular disease and death due to heart attack and stroke. In HGPS a mutation in lamin A (progerin) alters nuclear morphology and gene expression. Current therapy increases the lifespan of these children only modestly. Thus, greater understanding of the underlying mechanisms of HGPS is required to improve therapy. Endothelial cells (ECs) differentiated from induced pluripotent stem cells (iPSCs) derived from these patients exhibit hallmarks of senescence including replication arrest, increased expression of inflammatory markers, DNA damage, and telomere erosion. We hypothesized that correction of shortened telomeres may reverse these measures of vascular ageing. METHODS AND RESULTS We generated ECs from iPSCs belonging to children with HGPS and their unaffected parents. Telomerase mRNA (hTERT) was used to treat HGPS ECs. Endothelial morphology and functions were assessed, as well as proteomic and transcriptional profiles with attention to inflammatory markers, DNA damage, and EC identity genes. In a mouse model of HGPS, we assessed the effects of lentiviral transfection of mTERT on measures of senescence, focusing on the EC phenotype in various organs. hTERT treatment of human HGPS ECs improved replicative capacity; restored endothelial functions such as nitric oxide generation, acetylated low-density lipoprotein uptake and angiogenesis; and reduced the elaboration of inflammatory cytokines. In addition, hTERT treatment improved cellular and nuclear morphology, in association with a normalization of the transcriptional profile, effects that may be mediated in part by a reduction in progerin expression and an increase in sirtuin 1 (SIRT1). Progeria mice treated with mTERT lentivirus manifested similar improvements, with a reduction in inflammatory and DNA damage markers and increased SIRT1 in their vasculature and other organs. Furthermore, mTERT therapy increased the lifespan of HGPS mice. CONCLUSION Vascular rejuvenation using telomerase mRNA is a promising approach for progeria and other age-related diseases.
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Affiliation(s)
- Anahita Mojiri
- Center for Cardiovascular Regeneration, Department of Cardiovascular Sciences, Houston Methodist Research Institute, 6670 Bertner Ave., R10-South, Houston, TX 77030, USA
| | - Brandon K Walther
- Center for Cardiovascular Regeneration, Department of Cardiovascular Sciences, Houston Methodist Research Institute, 6670 Bertner Ave., R10-South, Houston, TX 77030, USA
- Department of Biomedical Engineering, Texas A&M University, 101 Bizzell St., College Station, TX 77840, USA
| | - Chongming Jiang
- Department of Medicine, Baylor College of Medicine, Houston, TX 77030, USA
| | - Gianfranco Matrone
- British Heart Foundation Centre for Cardiovascular Science, Queen’s Medical Research Institute, The University of Edinburgh, Edinburgh EH16 4TJ, UK
| | - Rhonda Holgate
- Center for Cardiovascular Regeneration, Department of Cardiovascular Sciences, Houston Methodist Research Institute, 6670 Bertner Ave., R10-South, Houston, TX 77030, USA
| | - Qiu Xu
- Center for Cardiovascular Regeneration, Department of Cardiovascular Sciences, Houston Methodist Research Institute, 6670 Bertner Ave., R10-South, Houston, TX 77030, USA
| | - Elisa Morales
- Center for Cardiovascular Regeneration, Department of Cardiovascular Sciences, Houston Methodist Research Institute, 6670 Bertner Ave., R10-South, Houston, TX 77030, USA
| | - Guangyu Wang
- Center for Cardiovascular Regeneration, Department of Cardiovascular Sciences, Houston Methodist Research Institute, 6670 Bertner Ave., R10-South, Houston, TX 77030, USA
- Center for Bioinformatics and Computational Biology, Department of Cardiovascular Sciences, Houston Methodist Research Institute, Houston, TX 77030, USA
| | - Jianhua Gu
- Center for Cardiovascular Regeneration, Department of Cardiovascular Sciences, Houston Methodist Research Institute, 6670 Bertner Ave., R10-South, Houston, TX 77030, USA
| | - Rongfu Wang
- Department of Medicine, and Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA, 90033, USA
| | - John P Cooke
- Center for Cardiovascular Regeneration, Department of Cardiovascular Sciences, Houston Methodist Research Institute, 6670 Bertner Ave., R10-South, Houston, TX 77030, USA
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Xu X, Shi Y, Luan P, Kou W, Li B, Zhai M, You S, Yu Q, Zhuang J, Jian W, Feinberg MW, Peng W. The subcellular redistribution of NLRC5 promotes angiogenesis via interacting with STAT3 in endothelial cells. Theranostics 2021; 11:4483-4501. [PMID: 33754073 PMCID: PMC7977449 DOI: 10.7150/thno.54473] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Accepted: 02/09/2021] [Indexed: 12/20/2022] Open
Abstract
Angiogenesis is a critical step in repair of tissue injury. The pattern recognition receptors (PRRs) recognize pathogen and damage associated molecular patterns (DAMPs) during injury and achieve host defense directly. However, the role of NLR family CARD domain containing 5 (NLRC5), an important member of PPRs, beyond host defense in angiogenesis during tissue repair remains unknown. Methods: In vitro, western blot and real-time PCR (RT-PCR) were used to detect the expression of NLRC5 in endothelial cells (ECs). Immunofluorescence microscopy was used to reveal the subcellular location of NLRC5 in ECs. Cell proliferation, wound healing, tube formation assays of ECs were performed to study the role of NLRC5 in angiogenesis. By using Tie2Cre-NLRC5flox/flox mice and bone marrow transplantation studies, we defined an EC-specific role for NLRC5 in angiogenesis. Mechanistically, co-immunoprecipitation studies and RNA sequencing indicated that signal transducer and activator of transcription 3 (STAT3) was the target of NLRC5 in the nucleus. And Co-IP was used to verify the specific domain of NLRC5 binding with STAT3. ChIP assay determined the genes regulated by interaction of STAT3 and NLRC5. Results: Knockdown of NLRC5 in vitro or in vivo inhibited pathological angiogenesis, but had no effect on physiological angiogenesis. NLRC5 was also identified to bind to STAT3 in the nucleus required the integrated death-domain and nucleotide-binding domain (DD+NACHT domain) of NLRC5. And the interaction of STAT3 and NLRC5 could enhance the transcription of angiopoietin-2 (Ang2) and cyclin D1 (CCND1) to participate in angiogenesis. Conclusions: In the ischemic microenvironment, NLRC5 protein accumulates in the nucleus of ECs and enhances STAT3 transcriptional activity for angiogenesis. These findings establish NLRC5 as a novel modulator of VEGFA signaling, providing a new target for angiogenic therapy to foster tissue regeneration.
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9
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Perazza LR, Daniel N, Dubois MJ, Pilon G, Varin TV, Blais M, Martinez Gonzales JL, Bouchard M, Asselin C, Lessard M, Pouliot Y, Roy D, Marette A. Distinct Effects of Milk-Derived and Fermented Dairy Protein on Gut Microbiota and Cardiometabolic Markers in Diet-Induced Obese Mice. J Nutr 2020; 150:2673-2686. [PMID: 32886125 PMCID: PMC7549311 DOI: 10.1093/jn/nxaa217] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Revised: 04/17/2020] [Accepted: 07/01/2020] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Recent meta-analyses suggest that the consumption of fermented dairy products reduces type 2 diabetes and cardiovascular disease (CVD) risk, although the underlying mechanisms remain unclear. OBJECTIVE We evaluated whether dairy protein products modulated gut microbiota and cardiometabolic features in mouse models of diet-induced obesity and CVD. METHODS Eight-week-old C57BL/6J wild-type (WT) and LDLr-/-ApoB100/100 (LRKO) male mice were fed for 12 and 24 wk, respectively, with a high-fat/high-sucrose diet [66% kcal lipids, 22% kcal carbohydrates (100% sucrose), 12% kcal proteins]. The protein sources of the 4 diets were 100% nondairy protein (NDP), or 50% of the NDP energy replaced by milk (MP), milk fermented by Lactobacillus helveticus (FMP), or Greek-style yogurt (YP) protein. Fecal 16S rRNA gene-based amplicon sequencing, intestinal gene expression, and glucose tolerance test were conducted. Hepatic inflammation and circulating adhesion molecules were measured by multiplex assays. RESULTS Feeding WT mice for 12 wk led to a 74% increase in body weight, whereas after 24 wk the LRKO mice had a 101.5% increase compared with initial body weight. Compared with NDP and MP, the consumption of FMP and YP modulated the gut microbiota composition in a similar clustering pattern, upregulating the Streptococcus genus in both genotypes. In WT mice, feeding YP compared with NDP increased the expression of genes involved in jejunal (Reg3b, 7.3-fold, P = 0.049) and ileal (Ocln, 1.7-fold, P = 0.047; Il1-β,1.7-fold, P = 0.038; Nos2, 3.8-fold, P = 0.018) immunity and integrity. In LRKO mice, feeding YP compared with MP improved insulin sensitivity by 65% (P = 0.039). In LRKO mice, feeding with FMP versus NDP attenuated hepatic inflammation (monocyte chemoattractant protein 1, 2.1-fold, P ˂ 0.0001; IL1-β, 5.7-fold, P = 0.0003; INF-γ, 1.7-fold, P = 0.002) whereas both FMP [vascular adhesion molecule 1 (VCAM1), 1.3-fold, P = 0.0003] and YP (VCAM1, 1.04-fold, P = 0.013; intracellular adhesion molecule 1, 1.4-fold, P = 0.028) decreased circulating adhesion molecules. CONCLUSION Both fermented dairy protein products reduce cardiometabolic risk factors in diet-induced obese mice, possibly by modulating the gut microbiota.
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Affiliation(s)
- Laís Rossi Perazza
- Faculty of Medicine, Laval University, Quebec City, Quebec, Canada,Institute of Nutrition and Functional Foods, Laval University, Quebec City, Quebec, Canada
| | - Noëmie Daniel
- Faculty of Medicine, Laval University, Quebec City, Quebec, Canada,Institute of Nutrition and Functional Foods, Laval University, Quebec City, Quebec, Canada
| | - Marie-Julie Dubois
- Faculty of Medicine, Laval University, Quebec City, Quebec, Canada,Institute of Nutrition and Functional Foods, Laval University, Quebec City, Quebec, Canada
| | - Geneviève Pilon
- Faculty of Medicine, Laval University, Quebec City, Quebec, Canada,Institute of Nutrition and Functional Foods, Laval University, Quebec City, Quebec, Canada
| | - Thibault Vincent Varin
- Institute of Nutrition and Functional Foods, Laval University, Quebec City, Quebec, Canada
| | - Mylène Blais
- Sherbrooke R & D Center, Agriculture and Agri-Food Canada, Sherbrooke, Quebec, Canada
| | | | - Michaël Bouchard
- Sherbrooke R & D Center, Agriculture and Agri-Food Canada, Sherbrooke, Quebec, Canada
| | - Claude Asselin
- Faculty of Medicine and Health Sciences, Sherbrooke University, Sherbrooke, Quebec, Canada
| | - Martin Lessard
- Sherbrooke R & D Center, Agriculture and Agri-Food Canada, Sherbrooke, Quebec, Canada
| | - Yves Pouliot
- Institute of Nutrition and Functional Foods, Laval University, Quebec City, Quebec, Canada
| | - Denis Roy
- Institute of Nutrition and Functional Foods, Laval University, Quebec City, Quebec, Canada
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Fancher IS, Le Master E, Ahn SJ, Adamos C, Lee JC, Berdyshev E, Dull RO, Phillips SA, Levitan I. Impairment of Flow-Sensitive Inwardly Rectifying K + Channels via Disruption of Glycocalyx Mediates Obesity-Induced Endothelial Dysfunction. Arterioscler Thromb Vasc Biol 2020; 40:e240-e255. [PMID: 32698687 DOI: 10.1161/atvbaha.120.314935] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
OBJECTIVE To determine if endothelial dysfunction in a mouse model of diet-induced obesity and in obese humans is mediated by the suppression of endothelial Kir (inwardly rectifying K+) channels. Approach and Results: Endothelial dysfunction, observed as reduced dilations to flow, occurred after feeding mice a high-fat, Western diet for 8 weeks. The functional downregulation of endothelial Kir2.1 using dominant-negative Kir2.1 construct resulted in substantial reductions in the response to flow in mesenteric arteries of lean mice, whereas no effect was observed in arteries of obese mice. Overexpressing wild-type-Kir2.1 in endothelium of arteries from obese mice resulted in full recovery of the flow response. Exposing freshly isolated endothelial cells to fluid shear during patch-clamp electrophysiology revealed that the flow-sensitivity of Kir was virtually abolished in cells from obese mice. Atomic force microscopy revealed that the endothelial glycocalyx was stiffer and the thickness of the glycocalyx layer reduced in arteries from obese mice. We also identified that the length of the glycocalyx is critical to the flow-activation of Kir. Overexpressing Kir2.1 in endothelium of arteries from obese mice restored flow- and heparanase-sensitivity, indicating an important role for heparan sulfates in the flow-activation of Kir. Furthermore, the Kir2.1-dependent component of flow-induced vasodilation was lost in the endothelium of resistance arteries of obese humans obtained from biopsies collected during bariatric surgery. CONCLUSIONS We conclude that obesity-induced impairment of flow-induced vasodilation is attributed to the loss of flow-sensitivity of endothelial Kir channels and propose that the latter is mediated by the biophysical alterations of the glycocalyx.
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Affiliation(s)
- Ibra S Fancher
- From the Division of Pulmonary, Critical Care, Sleep and Allergy, Department of Medicine (I.S.F., E.L.M., S.J.A., C.A., I.L.), University of Illinois at Chicago
| | - Elizabeth Le Master
- From the Division of Pulmonary, Critical Care, Sleep and Allergy, Department of Medicine (I.S.F., E.L.M., S.J.A., C.A., I.L.), University of Illinois at Chicago
| | - Sang Joon Ahn
- From the Division of Pulmonary, Critical Care, Sleep and Allergy, Department of Medicine (I.S.F., E.L.M., S.J.A., C.A., I.L.), University of Illinois at Chicago
| | - Crystal Adamos
- From the Division of Pulmonary, Critical Care, Sleep and Allergy, Department of Medicine (I.S.F., E.L.M., S.J.A., C.A., I.L.), University of Illinois at Chicago
| | - James C Lee
- Departement of Bioengineering (J.C.L.), University of Illinois at Chicago
| | - Evgeny Berdyshev
- Division of Pulmonary, Critical Care and Sleep Medicine, Departement of Medicine, National Jewish Health, Denver, CO (E.B.)
| | - Randal O Dull
- Department of Anesthesiology, University of Arizona College of Medicine, Banner-University Medical Center, Tucson (R.O.D.)
| | - Shane A Phillips
- Department of Physical Therapy (S.A.P.), University of Illinois at Chicago
| | - Irena Levitan
- From the Division of Pulmonary, Critical Care, Sleep and Allergy, Department of Medicine (I.S.F., E.L.M., S.J.A., C.A., I.L.), University of Illinois at Chicago
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11
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Kotla S, Vu HT, Ko KA, Wang Y, Imanishi M, Heo KS, Fujii Y, Thomas TN, Gi YJ, Mazhar H, Paez-Mayorga J, Shin JH, Tao Y, Giancursio CJ, Medina JL, Taunton J, Lusis AJ, Cooke JP, Fujiwara K, Le NT, Abe JI. Endothelial senescence is induced by phosphorylation and nuclear export of telomeric repeat binding factor 2-interacting protein. JCI Insight 2019; 4:124867. [PMID: 31045573 PMCID: PMC6538340 DOI: 10.1172/jci.insight.124867] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Accepted: 02/19/2019] [Indexed: 01/03/2023] Open
Abstract
The interplay among signaling events for endothelial cell (EC) senescence, apoptosis, and activation and how these pathological conditions promote atherosclerosis in the area exposed to disturbed flow (d-flow) in concert remain unclear. The aim of this study was to determine whether telomeric repeat-binding factor 2-interacting protein (TERF2IP), a member of the shelterin complex at the telomere, can regulate EC senescence, apoptosis, and activation simultaneously, and if so, by what molecular mechanisms. We found that d-flow induced p90RSK and TERF2IP interaction in a p90RSK kinase activity-dependent manner. An in vitro kinase assay revealed that p90RSK directly phosphorylated TERF2IP at the serine 205 (S205) residue, and d-flow increased TERF2IP S205 phosphorylation as well as EC senescence, apoptosis, and activation by activating p90RSK. TERF2IP phosphorylation was crucial for nuclear export of the TERF2IP-TRF2 complex, which led to EC activation by cytosolic TERF2IP-mediated NF-κB activation and also to senescence and apoptosis of ECs by depleting TRF2 from the nucleus. Lastly, using EC-specific TERF2IP-knockout (TERF2IP-KO) mice, we found that the depletion of TERF2IP inhibited d-flow-induced EC senescence, apoptosis, and activation, as well as atherosclerotic plaque formation. These findings demonstrate that TERF2IP is an important molecular switch that simultaneously accelerates EC senescence, apoptosis, and activation by S205 phosphorylation.
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Affiliation(s)
- Sivareddy Kotla
- Department of Cardiology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Hang Thi Vu
- Department of Cardiology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Kyung Ae Ko
- Department of Cardiology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Yin Wang
- Department of Cardiology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Masaki Imanishi
- Department of Cardiology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Kyung-Sun Heo
- Department of Cardiology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Yuka Fujii
- Department of Cardiology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Tamlyn N. Thomas
- Department of Cardiology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Young Jin Gi
- Department of Cardiology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Hira Mazhar
- Department of Cardiology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Jesus Paez-Mayorga
- Center for Cardiovascular Regeneration, Department of Cardiovascular Sciences, Houston Methodist Research Institute, Houston, Texas, USA
- Tecnologico de Monterrey, Escuela de Medicina y Ciencias de la Salud, Monterrey, Nuevo Leon, Mexico
| | - Ji-Hyun Shin
- Department of Cardiology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Yunting Tao
- Center for Cardiovascular Regeneration, Department of Cardiovascular Sciences, Houston Methodist Research Institute, Houston, Texas, USA
| | - Carolyn J. Giancursio
- Center for Cardiovascular Regeneration, Department of Cardiovascular Sciences, Houston Methodist Research Institute, Houston, Texas, USA
| | - Jan L.M. Medina
- Department of Cardiology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Jack Taunton
- Department of Cellular and Molecular Pharmacology, UCSF, San Francisco, California, USA
| | - Aldos J. Lusis
- Department of Human Genetics, David Geffen School of Medicine, UCLA, Los Angeles, California, USA
| | - John P. Cooke
- Center for Cardiovascular Regeneration, Department of Cardiovascular Sciences, Houston Methodist Research Institute, Houston, Texas, USA
| | - Keigi Fujiwara
- Department of Cardiology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Nhat-Tu Le
- Center for Cardiovascular Regeneration, Department of Cardiovascular Sciences, Houston Methodist Research Institute, Houston, Texas, USA
| | - Jun-ichi Abe
- Department of Cardiology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
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12
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SENCR stabilizes vascular endothelial cell adherens junctions through interaction with CKAP4. Proc Natl Acad Sci U S A 2018; 116:546-555. [PMID: 30584103 DOI: 10.1073/pnas.1810729116] [Citation(s) in RCA: 70] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
SENCR is a human-specific, vascular cell-enriched long-noncoding RNA (lncRNA) that regulates vascular smooth muscle cell and endothelial cell (EC) phenotypes. The underlying mechanisms of action of SENCR in these and other cell types is unknown. Here, levels of SENCR RNA are shown to be elevated in several differentiated human EC lineages subjected to laminar shear stress. Increases in SENCR RNA are also observed in the laminar shear stress region of the adult aorta of humanized SENCR-expressing mice, but not in disturbed shear stress regions. SENCR loss-of-function studies disclose perturbations in EC membrane integrity resulting in increased EC permeability. Biotinylated RNA pull-down and mass spectrometry establish an abundant SENCR-binding protein, cytoskeletal-associated protein 4 (CKAP4); this ribonucleoprotein complex was further confirmed in an RNA immunoprecipitation experiment using an antibody to CKAP4. Structure-function studies demonstrate a noncanonical RNA-binding domain in CKAP4 that binds SENCR Upon SENCR knockdown, increasing levels of CKAP4 protein are detected in the EC surface fraction. Furthermore, an interaction between CKAP4 and CDH5 is enhanced in SENCR-depleted EC. This heightened association appears to destabilize the CDH5/CTNND1 complex and augment CDH5 internalization, resulting in impaired adherens junctions. These findings support SENCR as a flow-responsive lncRNA that promotes EC adherens junction integrity through physical association with CKAP4, thereby stabilizing cell membrane-bound CDH5.
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13
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Harding IC, Mitra R, Mensah SA, Herman IM, Ebong EE. Pro-atherosclerotic disturbed flow disrupts caveolin-1 expression, localization, and function via glycocalyx degradation. J Transl Med 2018; 16:364. [PMID: 30563532 PMCID: PMC6299559 DOI: 10.1186/s12967-018-1721-2] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Accepted: 12/04/2018] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Endothelial-dependent atherosclerosis develops in a non-random pattern in regions of vessel bending and bifurcations, where blood flow exhibits disturbed flow (DF) patterns. In contrast, uniform flow (UF), normal endothelium, and healthy vessel walls co-exist within straight vessels. In clarifying how flow protectively or atherogenically regulates endothelial cell behavior, involvement of the endothelial surface glycocalyx has been suggested due to reduced expression in regions of atherosclerosis development. Here, we hypothesized that pro-atherosclerotic endothelial dysfunction occurs as a result of DF-induced reduction in glycocalyx expression and subsequently impairs endothelial sensitivity to flow. Specifically, we propose that glycocalyx degradation can induce pro-atherosclerotic endothelial dysfunction through decreased caveolin-1 and endothelial nitric oxide synthase expression and localization. METHODS We studied endothelial cells in atherosclerotic-prone DF and atherosclerotic-resistant UF conditions in parallel plate flow culture and in C57Bl/6 mice. The effects of flow conditioning on endothelial cell behavior were quantified using immunocytochemistry. The glycocalyx was fluorescently labeled for wheat germ agglutinin, which serves as a general glycocalyx label, and heparan sulfate, a major glycocalyx component. Additionally, mechanosensitivity was assessed by immunocytochemical fluorescence expression and function of caveolin-1, the protein that forms the mechanosignaling caveolar invaginations on the endothelial surface, total endothelial-type nitric oxide synthase (eNOS), which synthesizes nitric oxide, and serine 1177 phosphorylated eNOS (eNOS-pS1177), which is the active form of eNOS. Caveolin function and eNOS expression and activation were correlated to glycocalyx expression. Heparinase III enzyme was used to degrade a major glycocalyx component, HS, to identify the role of the glycocalyx in caveoin-1 and eNOS-pS1177 regulation. RESULTS Results confirmed that DF reduces caveolin-1 expression and abolishes most of its subcellular localization preferences, when compared to the effect of UF. DF down-regulates caveolin-1 mechanosignaling, as indicated by its reduced colocalization with serine 1177 phosphorylated endothelial-type nitric oxide synthase (eNOS-pS1177), a vasoregulatory signaling molecule whose activity is regulated by its residence in caveolae. As expected, DF inhibited glycocalyx expression compared to UF. In the absence of heparan sulfate, a major glycocalyx component, UF-conditioned endothelial cells exhibited near DF-like caveolin-1 expression, localization, and colocalization with eNOS-pS1177. CONCLUSIONS This is the first demonstration of a flow-defined role of the glycocalyx in caveolae expression and function related to vasculoprotective endothelial mechanosensitivity that defends against atherosclerosis. The results suggest that a glycocalyx-based therapeutic targeted to areas of atherosclerosis development could prevent disease initiation and progression.
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Affiliation(s)
- Ian C Harding
- Department of Bioengineering, Northeastern University, Boston, MA, USA
| | - Ronodeep Mitra
- Department of Chemical Engineering, Northeastern University, Boston, MA, 02115, USA
| | - Solomon A Mensah
- Department of Bioengineering, Northeastern University, Boston, MA, USA
| | - Ira M Herman
- Department of Developmental, Molecular, and Chemical Biology, Tufts Sackler School of Graduate Biomedical Sciences, Boston, MA, USA.,Center for Innovations in Wound Healing Research, Tufts University School of Medicine, Boston, MA, USA
| | - Eno E Ebong
- Department of Bioengineering, Northeastern University, Boston, MA, USA. .,Department of Chemical Engineering, Northeastern University, Boston, MA, 02115, USA. .,Department of Neuroscience, Albert Einstein College of Medicine, New York, NY, USA.
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