1
|
Huang F, Zhang F, Huang L, Zhu X, Huang C, Li N, Da Q, Huang Y, Yang H, Wang H, Zhao L, Lin Q, Chen Z, Xu J, Liu J, Ren M, Wang Y, Han Z, Ouyang K. Inositol 1,4,5-Trisphosphate Receptors Regulate Vascular Smooth Muscle Cell Proliferation and Neointima Formation in Mice. J Am Heart Assoc 2024; 13:e034203. [PMID: 39023067 DOI: 10.1161/jaha.124.034203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Accepted: 06/24/2024] [Indexed: 07/20/2024]
Abstract
BACKGROUND Vascular smooth muscle cell (VSMC) proliferation is involved in many types of arterial diseases, including neointima hyperplasia, in which Ca2+ has been recognized as a key player. However, the physiological role of Ca2+ release via inositol 1,4,5-trisphosphate receptors (IP3Rs) from endoplasmic reticulum in regulating VSMC proliferation has not been well determined. METHODS AND RESULTS Both in vitro cell culture models and in vivo mouse models were generated to investigate the role of IP3Rs in regulating VSMC proliferation. Expression of all 3 IP3R subtypes was increased in cultured VSMCs upon platelet-derived growth factor-BB and FBS stimulation as well as in the left carotid artery undergoing intimal thickening after vascular occlusion. Genetic ablation of all 3 IP3R subtypes abolished endoplasmic reticulum Ca2+ release in cultured VSMCs, significantly reduced cell proliferation induced by platelet-derived growth factor-BB and FBS stimulation, and also decreased cell migration of VSMCs. Furthermore, smooth muscle-specific deletion of all IP3R subtypes in adult mice dramatically attenuated neointima formation induced by left carotid artery ligation, accompanied by significant decreases in cell proliferation and matrix metalloproteinase-9 expression in injured vessels. Mechanistically, IP3R-mediated Ca2+ release may activate cAMP response element-binding protein, a key player in controlling VSMC proliferation, via Ca2+/calmodulin-dependent protein kinase II and Akt. Loss of IP3Rs suppressed cAMP response element-binding protein phosphorylation at Ser133 in both cultured VSMCs and injured vessels, whereas application of Ca2+ permeable ionophore, ionomycin, can reverse cAMP response element-binding protein phosphorylation in IP3R triple knockout VSMCs. CONCLUSIONS Our results demonstrated an essential role of IP3R-mediated Ca2+ release from endoplasmic reticulum in regulating cAMP response element-binding protein activation, VSMC proliferation, and neointima formation in mouse arteries.
Collapse
MESH Headings
- Animals
- Muscle, Smooth, Vascular/metabolism
- Muscle, Smooth, Vascular/pathology
- Cell Proliferation
- Neointima/pathology
- Inositol 1,4,5-Trisphosphate Receptors/metabolism
- Inositol 1,4,5-Trisphosphate Receptors/genetics
- Myocytes, Smooth Muscle/metabolism
- Myocytes, Smooth Muscle/pathology
- Cells, Cultured
- Mice, Knockout
- Disease Models, Animal
- Calcium Signaling
- Mice, Inbred C57BL
- Male
- Cyclic AMP Response Element-Binding Protein/metabolism
- Cyclic AMP Response Element-Binding Protein/genetics
- Mice
- Phosphorylation
- Becaplermin/pharmacology
- Becaplermin/metabolism
- Cell Movement
- Proto-Oncogene Proteins c-akt/metabolism
- Carotid Artery Injuries/pathology
- Carotid Artery Injuries/metabolism
- Carotid Artery Injuries/genetics
- Calcium/metabolism
- Endoplasmic Reticulum/metabolism
- Endoplasmic Reticulum/pathology
Collapse
Affiliation(s)
- Fang Huang
- Department of Cardiovascular Surgery, Peking University Shenzhen Hospital, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School Peking University Shenzhen China
| | - Fei Zhang
- Department of Cardiovascular Surgery, Peking University Shenzhen Hospital, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School Peking University Shenzhen China
| | - Lei Huang
- Department of Cardiovascular Surgery, Peking University Shenzhen Hospital, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School Peking University Shenzhen China
| | - Xiangbin Zhu
- Department of Cardiovascular Surgery, Peking University Shenzhen Hospital, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School Peking University Shenzhen China
| | - Can Huang
- Department of Cardiovascular Surgery, Peking University Shenzhen Hospital, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School Peking University Shenzhen China
| | - Na Li
- Department of Cardiovascular Surgery, Peking University Shenzhen Hospital, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School Peking University Shenzhen China
| | - Qingen Da
- Department of Cardiovascular Surgery, Peking University Shenzhen Hospital, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School Peking University Shenzhen China
| | - Yu Huang
- Department of Cardiovascular Surgery, Peking University Shenzhen Hospital, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School Peking University Shenzhen China
| | - Huihua Yang
- Department of Cardiovascular Surgery, Peking University Shenzhen Hospital, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School Peking University Shenzhen China
| | - Hong Wang
- Central Laboratory Peking University Shenzhen Hospital Shenzhen China
| | - Lingyun Zhao
- Department of Cardiovascular Surgery, Peking University Shenzhen Hospital, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School Peking University Shenzhen China
| | - Qingsong Lin
- Department of Cardiovascular Surgery, Peking University Shenzhen Hospital, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School Peking University Shenzhen China
| | - Zee Chen
- Department of Cardiovascular Surgery, Peking University Shenzhen Hospital, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School Peking University Shenzhen China
| | - Junjie Xu
- Department of Cardiovascular Surgery, Peking University Shenzhen Hospital, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School Peking University Shenzhen China
| | - Jie Liu
- Department of Pathophysiology, School of Medicine Shenzhen University Shenzhen China
| | - Mingming Ren
- Department of Cardiovascular Surgery, Peking University Shenzhen Hospital, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School Peking University Shenzhen China
| | - Yan Wang
- Department of Cardiology Qingdao Municipal Hospital Qingdao China
| | - Zhen Han
- Department of Cardiovascular Surgery, Peking University Shenzhen Hospital, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School Peking University Shenzhen China
| | - Kunfu Ouyang
- Department of Cardiovascular Surgery, Peking University Shenzhen Hospital, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School Peking University Shenzhen China
| |
Collapse
|
2
|
Rajab SAS, Andersen LK, Kenter LW, Berlinsky DL, Borski RJ, McGinty AS, Ashwell CM, Ferket PR, Daniels HV, Reading BJ. Combinatorial metabolomic and transcriptomic analysis of muscle growth in hybrid striped bass (female white bass Morone chrysops x male striped bass M. saxatilis). BMC Genomics 2024; 25:580. [PMID: 38858615 PMCID: PMC11165755 DOI: 10.1186/s12864-024-10325-y] [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: 08/30/2023] [Accepted: 04/19/2024] [Indexed: 06/12/2024] Open
Abstract
BACKGROUND Understanding growth regulatory pathways is important in aquaculture, fisheries, and vertebrate physiology generally. Machine learning pattern recognition and sensitivity analysis were employed to examine metabolomic small molecule profiles and transcriptomic gene expression data generated from liver and white skeletal muscle of hybrid striped bass (white bass Morone chrysops x striped bass M. saxatilis) representative of the top and bottom 10 % by body size of a production cohort. RESULTS Larger fish (good-growth) had significantly greater weight, total length, hepatosomatic index, and specific growth rate compared to smaller fish (poor-growth) and also had significantly more muscle fibers of smaller diameter (≤ 20 µm diameter), indicating active hyperplasia. Differences in metabolomic pathways included enhanced energetics (glycolysis, citric acid cycle) and amino acid metabolism in good-growth fish, and enhanced stress, muscle inflammation (cortisol, eicosanoids) and dysfunctional liver cholesterol metabolism in poor-growth fish. The majority of gene transcripts identified as differentially expressed between groups were down-regulated in good-growth fish. Several molecules associated with important growth-regulatory pathways were up-regulated in muscle of fish that grew poorly: growth factors including agt and agtr2 (angiotensins), nicotinic acid (which stimulates growth hormone production), gadd45b, rgl1, zfp36, cebpb, and hmgb1; insulin-like growth factor signaling (igfbp1 and igf1); cytokine signaling (socs3, cxcr4); cell signaling (rgs13, rundc3a), and differentiation (rhou, mmp17, cd22, msi1); mitochondrial uncoupling proteins (ucp3, ucp2); and regulators of lipid metabolism (apoa1, ldlr). Growth factors pttg1, egfr, myc, notch1, and sirt1 were notably up-regulated in muscle of good-growing fish. CONCLUSION A combinatorial pathway analysis using metabolomic and transcriptomic data collectively suggested promotion of cell signaling, proliferation, and differentiation in muscle of good-growth fish, whereas muscle inflammation and apoptosis was observed in poor-growth fish, along with elevated cortisol (an anti-inflammatory hormone), perhaps related to muscle wasting, hypertrophy, and inferior growth. These findings provide important biomarkers and mechanisms by which growth is regulated in fishes and other vertebrates as well.
Collapse
Affiliation(s)
- Sarah A S Rajab
- Department of Applied Ecology, North Carolina State University, 100 Eugene Brooks Avenue, Box 7617, Raleigh, NC, 27695, USA
| | - Linnea K Andersen
- Department of Applied Ecology, North Carolina State University, 100 Eugene Brooks Avenue, Box 7617, Raleigh, NC, 27695, USA
| | - Linas W Kenter
- Department of Agriculture, Nutrition, and Food Systems, University of New Hampshire, Durham, NH, USA
| | - David L Berlinsky
- Department of Agriculture, Nutrition, and Food Systems, University of New Hampshire, Durham, NH, USA
| | - Russell J Borski
- Department of Biological Sciences, North Carolina State University, Raleigh, NC, USA
| | - Andrew S McGinty
- North Carolina State University, Pamlico Aquaculture Field Laboratory, Aurora, NC, USA
| | - Christopher M Ashwell
- Prestage Department of Poultry Science, North Carolina State University, Raleigh, NC, USA
| | - Peter R Ferket
- Prestage Department of Poultry Science, North Carolina State University, Raleigh, NC, USA
| | - Harry V Daniels
- Department of Applied Ecology, North Carolina State University, 100 Eugene Brooks Avenue, Box 7617, Raleigh, NC, 27695, USA
| | - Benjamin J Reading
- Department of Applied Ecology, North Carolina State University, 100 Eugene Brooks Avenue, Box 7617, Raleigh, NC, 27695, USA.
- North Carolina State University, Pamlico Aquaculture Field Laboratory, Aurora, NC, USA.
| |
Collapse
|
3
|
Li Z, Zhao Y, Pan Z, Cai B, Zhang C, Jiao J. LncRNA-LncDACH1 mediated phenotypic switching of smooth muscle cells during neointimal hyperplasia in male arteriovenous fistulas. Nat Commun 2024; 15:3743. [PMID: 38702316 PMCID: PMC11068796 DOI: 10.1038/s41467-024-48019-4] [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: 01/16/2023] [Accepted: 04/17/2024] [Indexed: 05/06/2024] Open
Abstract
Arteriovenous fistulas (AVFs) are the most common vascular access points for hemodialysis (HD), but they have a high incidence of postoperative dysfunction, mainly due to excessive neointimal hyperplasia (NIH). Our previous studies have revealed a highly conserved LncRNA-LncDACH1 as an important regulator of cardiomyocyte and fibroblast proliferation. Herein, we find that LncDACH1 regulates NIH in AVF in male mice with conditional knockout of smooth muscle cell-specific LncDACH1 and in male mice model of AVF with LncDACH1 overexpression by adeno-associated virus. Mechanistically, silence of LncDACH1 activates p-AKT through promoting the expression of heat shock protein 90 (HSP90) and serine/arginine-rich splicing factor protein kinase 1 (SRPK1). Moreover, LncDACH1 is transcriptionally activated by transcription factor KLF9 that binds directly to the promoter region of the LncDACH1 gene. In this work, during AVF NIH, LncDACH1 is downregulated by KLF9 and promotes NIH through the HSP90/ SRPK1/ AKT signaling axis.
Collapse
Affiliation(s)
- Zhaozheng Li
- Department of Nephrology, The Second Affiliated Hospital of Harbin Medical University, 150086, Harbin, China
| | - Yao Zhao
- Department of Nephrology, The Second Affiliated Hospital of Harbin Medical University, 150086, Harbin, China
| | - Zhenwei Pan
- Department of Pharmacy at The Second Affiliated Hospital, Harbin Medical University, 150086, Harbin, China
- Department of Pharmacology (The Key Laboratory of Cardiovascular Medicine Research, Ministry of Education) at College of Pharmacy, Harbin Medical University, 150086, Harbin, China
| | - Benzhi Cai
- Department of Pharmacy at The Second Affiliated Hospital, Harbin Medical University, 150086, Harbin, China
- Department of Pharmacology (The Key Laboratory of Cardiovascular Medicine Research, Ministry of Education) at College of Pharmacy, Harbin Medical University, 150086, Harbin, China
- Department of Clinical Pharmacology (the Heilongjiang Key Laboratory of Drug Research), Harbin Medical University, 150086, Harbin, China
| | - Chengwei Zhang
- Department of Nephrology, The Second Affiliated Hospital of Harbin Medical University, 150086, Harbin, China.
| | - Jundong Jiao
- Department of Nephrology, The Second Affiliated Hospital of Harbin Medical University, 150086, Harbin, China.
| |
Collapse
|
4
|
Silverman JB, Vega PN, Tyska MJ, Lau KS. Intestinal Tuft Cells: Morphology, Function, and Implications for Human Health. Annu Rev Physiol 2024; 86:479-504. [PMID: 37863104 PMCID: PMC11193883 DOI: 10.1146/annurev-physiol-042022-030310] [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] [Indexed: 10/22/2023]
Abstract
Tuft cells are a rare and morphologically distinct chemosensory cell type found throughout many organs, including the gastrointestinal tract. These cells were identified by their unique morphologies distinguished by large apical protrusions. Ultrastructural data have begun to describe the molecular underpinnings of their cytoskeletal features, and tuft cell-enriched cytoskeletal proteins have been identified, although the connection of tuft cell morphology to tuft cell functionality has not yet been established. Furthermore, tuft cells display variations in function and identity between and within tissues, leading to the delineation of distinct tuft cell populations. As a chemosensory cell type, they display receptors that are responsive to ligands specific for their environment. While many studies have demonstrated the tuft cell response to protists and helminths in the intestine, recent research has highlighted other roles of tuft cells as well as implicated tuft cells in other disease processes including inflammation, cancer, and viral infections. Here, we review the literature on the cytoskeletal structure of tuft cells. Additionally, we focus on new research discussing tuft cell lineage, ligand-receptor interactions, tuft cell tropism, and the role of tuft cells in intestinal disease. Finally, we discuss the implication of tuft cell-targeted therapies in human health and how the morphology of tuft cells may contribute to their functionality.
Collapse
Affiliation(s)
- Jennifer B Silverman
- Epithelial Biology Center and Department of Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, Tennessee, USA; ,
| | - Paige N Vega
- Epithelial Biology Center and Department of Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, Tennessee, USA; ,
| | - Matthew J Tyska
- Epithelial Biology Center and Department of Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, Tennessee, USA; ,
| | - Ken S Lau
- Epithelial Biology Center and Department of Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, Tennessee, USA; ,
| |
Collapse
|
5
|
Lan Y, Dong M, Li Y, Diao Y, Chen Z, Wu Z. Upregulation of girdin delays endothelial cell apoptosis via promoting engulfment of platelets. Mol Biol Rep 2023; 50:8111-8120. [PMID: 37548867 DOI: 10.1007/s11033-023-08625-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Accepted: 06/22/2023] [Indexed: 08/08/2023]
Abstract
BACKGROUND Endothelial cells are crucial in maintaining the homeostasis of the blood-brain barrier. Girders of actin filament (Girdin) and phosphor (p)-Girdin are essential for the engulfment of human brain microvascular endothelial cells (HBMECs) into platelets (PLTs), but the potential mechanism remains unclear and requires further study. METHODS Following PLT and cytochalasin D treatment, Hoechst 33,342 detected apoptosis. The transfection efficiency of the short hairpin RNA targeting Girdin (sh-Girdin) or overexpressing Girdin (OE-Girdin) was determined using western blotting. Sh-Girdin, OE-Girdin, mutated Girdin (m-Girdin), and microfilament binding region deleted Girdin (Del-Girdin) were transfected into HBMECs under PLT conditions. Subsequently, the engulfment of HBMECs by PLTs was detected by flow cytometry and transmission electron microscopy. Girdin and phosphorylated (p)-Girdin levels were quantified by western blot. The positive expression of Girdin was measured by immunohistochemistry (IHC). The localization of PLT, Girdin, and p-Girdin and the engulfment of HBMECs in PLTs were analyzed by confocal microscopy. RESULT Cytochalasin D overturned the inhibitory effect of PLT on cell apoptosis. OE-Girdin enhanced the fluorescent intensity of PLT-labelling and the engulfment of HBMECs by PLTs, while sh-Girdin, m-Girdin, and Del-Girdin ran reversely. OE-Girdin elevated the Girdin and p-Girdin levels, while sh-Girdin and Del-Girdin were the opposite, but m-Girdin did not affect the p-Girdin and Girdin levels. CONCLUSION Girdin and p-Girdin were co-located with PLTs in HBMECs. The over-expression of Girdin was identified as being associated with the increasing engulfment of PTLs. Girdin may be an effective target to alleviate endothelial cell apoptosis.
Collapse
Affiliation(s)
- Yong Lan
- Department of Vascular Surgery, Beijing hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, P.R. China.
| | - Min Dong
- Department of Cardiology, Beijing hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, P.R. China
| | - Yongjun Li
- Department of Vascular Surgery, Beijing hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, P.R. China
| | - Yongpeng Diao
- Department of Vascular Surgery, Beijing hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, P.R. China
| | - Zuoguan Chen
- Department of Vascular Surgery, Beijing hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, P.R. China
| | - Zhiyuan Wu
- Department of Vascular Surgery, Beijing hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, P.R. China
| |
Collapse
|
6
|
Miyabe M, Nakamura N, Saiki T, Miyabe S, Ito M, Sasajima S, Minato T, Matsubara T, Naruse K. Porphyromonas gingivalis Lipopolysaccharides Promote Proliferation and Migration of Human Vascular Smooth Muscle Cells through the MAPK/TLR4 Pathway. Int J Mol Sci 2022; 24:ijms24010125. [PMID: 36613563 PMCID: PMC9820797 DOI: 10.3390/ijms24010125] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 12/08/2022] [Accepted: 12/15/2022] [Indexed: 12/24/2022] Open
Abstract
Atherosclerosis is a major cause of mortality worldwide. The initial change in atherosclerosis is intimal thickening due to muscle cell proliferation and migration. A correlation has been observed between periodontal disease and atherosclerosis. Here, we investigated the proliferation and migration of human aortic smooth muscle cells (HASMCs) using Porphyromonas gingivalis-derived LPS (Pg-LPS). To elucidate intracellular signaling, toll-like receptor 4 (TLR4) and myeloid differentiation factor 88 (MyD88) of HASMCs were knocked down, and the role of these molecules in Pg-LPS-stimulated proliferation and migration was examined. The role of mitogen-activated protein kinase (MAPK) in HASMC proliferation and migration was further elucidated by MAPK inhibition. Pg-LPS stimulation increased the proliferation and migration of HASMCs and activated the TLR4/MyD88 pathway. TLR4 knockdown inhibited Pg-LPS stimulated HASMCs proliferation and migration. Pg-LPS stimulation led to the phosphorylation of P38 MAPK, JNK, and ERK, and MyD88 knockdown inhibited the phosphorylation of P38 MAPK and JNK but not ERK. P38 MAPK and SAPK/JNK inhibition did not suppress the proliferation of HASMCs upon Pg-LPS stimulation, but ERK inhibition significantly inhibited proliferation. SAPK/JNK and ERK inhibition suppressed Pg-LPS-stimulated migration of HASMCs. In conclusion, our findings suggest that Pg-LPS may promote atherosclerosis via the activation of MAPK through TLR4.
Collapse
Affiliation(s)
- Megumi Miyabe
- Department of Internal Medicine, School of Dentistry, Aichi Gakuin University, 2-11, Suemori-dori, Chikusa-ku, Nagoya 464-8651, Japan
- Correspondence: ; Tel./Fax: +81-52-759-2168
| | - Nobuhisa Nakamura
- Department of Internal Medicine, School of Dentistry, Aichi Gakuin University, 2-11, Suemori-dori, Chikusa-ku, Nagoya 464-8651, Japan
| | - Tomokazu Saiki
- Department of Internal Medicine, School of Dentistry, Aichi Gakuin University, 2-11, Suemori-dori, Chikusa-ku, Nagoya 464-8651, Japan
- Department of Pharmacy, Aichi Gakuin University Dental Hospital, 2-11, Suemori-dori, Chikusa-ku, Nagoya 464-8651, Japan
| | - Satoru Miyabe
- Department of Maxillofacial Surgery, School of Dentistry, Aichi Gakuin University, 2-11, Suemori-dori, Chikusa-ku, Nagoya 464-8651, Japan
| | - Mizuho Ito
- Department of Internal Medicine, School of Dentistry, Aichi Gakuin University, 2-11, Suemori-dori, Chikusa-ku, Nagoya 464-8651, Japan
| | - Sachiko Sasajima
- Department of Internal Medicine, School of Dentistry, Aichi Gakuin University, 2-11, Suemori-dori, Chikusa-ku, Nagoya 464-8651, Japan
| | - Tomomi Minato
- Department of Internal Medicine, School of Dentistry, Aichi Gakuin University, 2-11, Suemori-dori, Chikusa-ku, Nagoya 464-8651, Japan
- Department of Clinical Laboratory, Aichi Gakuin University Dental Hospital, 2-11, Suemori-dori, Chikusa-ku, Nagoya 464-8651, Japan
| | - Tatsuaki Matsubara
- The Graduate Center of Human Sciences, Aichi Mizuho College, Syunko-cho, Mizuho-ku, Nagoya 467-0867, Japan
| | - Keiko Naruse
- Department of Internal Medicine, School of Dentistry, Aichi Gakuin University, 2-11, Suemori-dori, Chikusa-ku, Nagoya 464-8651, Japan
| |
Collapse
|
7
|
Ren X, Zhu H, Deng K, Ning X, Li L, Liu D, Yang B, Shen C, Wang X, Wu N, Chen S, Gu D, Wang L. Long Noncoding RNA TPRG1-AS1 Suppresses Migration of Vascular Smooth Muscle Cells and Attenuates Atherogenesis via Interacting With MYH9 Protein. Arterioscler Thromb Vasc Biol 2022; 42:1378-1397. [PMID: 36172865 DOI: 10.1161/atvbaha.122.318158] [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: 12/14/2022]
Abstract
BACKGROUND Migration of human aortic smooth muscle cells (HASMCs) contributes to the pathogenesis of atherosclerosis. This study aims to functionally characterize long noncoding RNA TPRG1-AS1 (tumor protein p63 regulated 1, antisense 1) in HASMCs and reveal the underlying mechanism of TPRG1-AS1 in HASMCs migration, neointima formation, and subsequent atherosclerosis. METHODS The expression of TPRG1-AS1 in atherosclerotic plaques was verified a series of in silico analysis and quantitative real-time polymerase chain reaction analysis. Northern blot, rapid amplification of cDNA ends and Sanger sequencing were used to determine its full length. In vitro transcription-translation assay was used to investigate the protein-coding capacity of TPRG1-AS1. RNA fluorescent in situ hybridization was used to confirm its subcellular localization. Loss- and gain-of-function studies were used to investigate the function of TPRG1-AS1. Furthermore, the effect of TPRG1-AS1 on the pathological response was evaluated in carotid balloon injury model, wire injury model, and atherosclerosis model, respectively. RESULTS TPRG1-AS1 was significantly increased in atherosclerotic plaques. TPRG1-AS1 did not encode any proteins and its full length was 1279nt, which was bona fide a long noncoding RNA. TPRG1-AS1 was mainly localized in cytoplasmic and perinuclear regions in HASMCs. TPRG1-AS1 directly interacted with MYH9 (myosin heavy chain 9) protein in HASMCs, promoted MYH9 protein degradation through the proteasome pathway, hindered F-actin stress fiber formation, and finally inhibited HASMCs migration. Vascular smooth muscle cell-specific transgenic overexpression of TPRG1-AS1 significantly reduced neointima formation, and attenuated atherosclerosis in apolipoprotein E knockout (Apoe-/-) mice. CONCLUSIONS This study demonstrated that TPRG1-AS1 inhibited HASMCs migration through interacting with MYH9 protein and consequently suppressed neointima formation and atherosclerosis.
Collapse
Affiliation(s)
- Xiaoxiao Ren
- Key Laboratory of Cardiovascular Epidemiology and Department of Epidemiology, State Key Laboratory of Cardiovascular Disease (X.R., H.Z., K.D., X.N., D.L., B.Y., S.C., D.G., L.W.), Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Huijuan Zhu
- Key Laboratory of Cardiovascular Epidemiology and Department of Epidemiology, State Key Laboratory of Cardiovascular Disease (X.R., H.Z., K.D., X.N., D.L., B.Y., S.C., D.G., L.W.), Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Keyong Deng
- Key Laboratory of Cardiovascular Epidemiology and Department of Epidemiology, State Key Laboratory of Cardiovascular Disease (X.R., H.Z., K.D., X.N., D.L., B.Y., S.C., D.G., L.W.), Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xiaotong Ning
- Key Laboratory of Cardiovascular Epidemiology and Department of Epidemiology, State Key Laboratory of Cardiovascular Disease (X.R., H.Z., K.D., X.N., D.L., B.Y., S.C., D.G., L.W.), Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Lin Li
- Key Laboratory of Cardiovascular Epidemiology and Department of Epidemiology, State Key Laboratory of Cardiovascular Disease (X.R., H.Z., K.D., X.N., D.L., B.Y., S.C., D.G., L.W.), Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Dan Liu
- Key Laboratory of Cardiovascular Epidemiology and Department of Epidemiology, State Key Laboratory of Cardiovascular Disease (X.R., H.Z., K.D., X.N., D.L., B.Y., S.C., D.G., L.W.), Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Bin Yang
- Key Laboratory of Cardiovascular Epidemiology and Department of Epidemiology, State Key Laboratory of Cardiovascular Disease (X.R., H.Z., K.D., X.N., D.L., B.Y., S.C., D.G., L.W.), Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Chenyang Shen
- Department of Vascular Surgery, State Key Laboratory of Cardiovascular Disease (C.S.), Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xianqiang Wang
- Department of Surgery (X.W.), Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Naqiong Wu
- Cardiometabolic Center (N.W.), Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Shufeng Chen
- Key Laboratory of Cardiovascular Epidemiology and Department of Epidemiology, State Key Laboratory of Cardiovascular Disease (X.R., H.Z., K.D., X.N., D.L., B.Y., S.C., D.G., L.W.), Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Dongfeng Gu
- Key Laboratory of Cardiovascular Epidemiology and Department of Epidemiology, State Key Laboratory of Cardiovascular Disease (X.R., H.Z., K.D., X.N., D.L., B.Y., S.C., D.G., L.W.), Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Laiyuan Wang
- Key Laboratory of Cardiovascular Epidemiology and Department of Epidemiology, State Key Laboratory of Cardiovascular Disease (X.R., H.Z., K.D., X.N., D.L., B.Y., S.C., D.G., L.W.), Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| |
Collapse
|
8
|
Zhang Y, Liu C, Zhou L. Prognosis of gastric adenocarcinoma associated with girdin, Akt, and cortactin. Ann Saudi Med 2022; 42:181-190. [PMID: 35770962 PMCID: PMC9167460 DOI: 10.5144/0256-4947.2022.181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/09/2022] Open
Abstract
BACKGROUND The actin-binding protein girdin regulates tumor cell migration and invasion by maintaining actin structure. PI3K/Akt signaling is an important actin-remodeling pathway. The protein cortactin acts directly on microfilaments and promotes tumor invasion and metastasis by rearranging the cytoskeleton. However, there are few reports on the co-expression of girdin, Akt, and cortactin in gastric adenocarcinoma (GAC). OBJECTIVES Evaluate girdin, Akt, and cortactin expression in GAC tissues and assess their relationship to the prognosis of GAC patients. DESIGN Survival analysis SETTING: Medical college in China PATIENTS AND METHODS: We compared survival in 110 paraffin-preserved GAC with corresponding normal gastric mucosa tissues in relationship to girdin, Akt, and cortactin expression levels. MAIN OUTCOME MEASURE Expression levels of the proteins. SAMPLE SIZE 110 RESULTS: The expression of girdin, Akt, and cortactin were all upregulated in GAC tissues compared with corresponding normal tissues (66.4% vs 36.3%, 57.3% vs 28.2% and 69.1% vs 22.7%, respectively; P<.05) and expression was mutually positive (all P<.05). Overall survival in the girdin, Akt, and cortactin high expression groups was reduced. Multivariate analysis showed that girdin, Akt, cortactin, lymph node metastasis (LNM) and TNM stages were independent factors affecting GAC patients prognosis (P<.05). CONCLUSIONS Girdin and cortactin may promote GAC invasion and metastasis via the PI3-K/Akt signaling pathway. Girdin, Akt, and cortactin co-expression might serve as a novel molecular target for GAC therapy and improve the prognosis of patients with this disease. LIMITATIONS A small sample size and lack of related research on molecular mechanisms. CONFLICT OF INTEREST None.
Collapse
Affiliation(s)
- Yue Zhang
- From the Department of Pathology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, China
| | - Cheyan Liu
- From the Department of Pathology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, China
| | - Lei Zhou
- From the Department of Pathology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, China
| |
Collapse
|
9
|
Zhang MW, Wang XH, Shi J, Yu JG. Sinomenine in Cardio-Cerebrovascular Diseases: Potential Therapeutic Effects and Pharmacological Evidences. Front Cardiovasc Med 2021; 8:749113. [PMID: 34660748 PMCID: PMC8517137 DOI: 10.3389/fcvm.2021.749113] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Accepted: 09/08/2021] [Indexed: 12/12/2022] Open
Abstract
Cardio-cerebrovascular diseases, as a major cause of health loss all over the world, contribute to an important part of the global burden of disease. A large number of traditional Chinese medicines have been proved effective both clinically and in pharmacological investigations, with the acceleration of the modernization of Chinese medicine. Sinomenine is the main active constituent of sinomenium acutum and has been generally used in therapies of rheumatoid arthritis and neuralgia. Varieties of pharmacological effects of sinomenine in cardio-cerebrovascular system have been discovered recently, suggesting an inspiring application prospect of sinomenine in cardio-cerebrovascular diseases. Sinomenine may retard the progression of atherosclerosis by attenuating endothelial inflammation, regulating immune cells function, and inhibiting the proliferation of vascular smooth muscle cells. Sinomenine also alleviates chronic cardiac allograft rejection relying on its anti-inflammatory and anti-hyperplastic activities and suppresses autoimmune myocarditis by immunosuppression. Prevention of myocardial or cerebral ischemia-reperfusion injury by sinomenine is associated with its modulation of cardiomyocyte death, inflammation, calcium overload, and oxidative stress. The regulatory effects on vasodilation and electrophysiology make sinomenine a promising drug to treat hypertension and arrhythmia. Here, in this review, we will illustrate the pharmacological activities of sinomenine in cardio-cerebrovascular system and elaborate the underlying mechanisms, as well as give an overview of the potential therapeutic roles of sinomenine in cardio-cerebrovascular diseases, trying to provide clues and bases for its clinical usage.
Collapse
Affiliation(s)
- Meng-Wan Zhang
- Department of Pharmacy, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Xiao-Hui Wang
- Department of Pharmacy, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Jing Shi
- Department of Pharmacy, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Jian-Guang Yu
- Department of Pharmacy, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, China
| |
Collapse
|
10
|
Zhang X, Xu X, Lu L, Wan X, Qin Y, Ruan W, Lv C, He L, Guo X. A new Mfn-2 related synthetic peptide promotes vascular smooth muscle cell apoptosis via regulating the mitochondrial apoptotic pathway by inhibiting Akt signaling. J Transl Med 2021; 19:395. [PMID: 34538249 PMCID: PMC8451139 DOI: 10.1186/s12967-021-03064-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Accepted: 09/02/2021] [Indexed: 01/11/2023] Open
Abstract
Background Restenosis after angioplasty is a major challenge for the treatment of coronary artery diseases. Facilitation of vascular smooth muscle cell (VSMC) apoptosis may be an attractive approach to decrease the incidence of restenosis. We synthesized a 16-amino acid mitofusin-2 (Mfn-2) gene related peptide (MRSP) based on the sequence of the p21ras signature motif, the smallest functional sequence of the Mfn-2 gene with proapoptotic properties in VSMC. We investigated whether MRSP enhanced apoptotic activities to inhibit VSMC accumulation and neointimal hyperplasia in rats with carotid balloon injury. Methods VSMCs were treated with different concentrations of MRSP, the PI3K agonist 740 Y-P and the inhibitor LY294002. Cell apoptosis and related pathway molecules were assessed. MRSP was also given to rats with carotid artery balloon injury. Neointimal hyperplasia and cell apoptotic pathways were detected. Results In vitro experiments revealed that MRSP treatment significantly increased VSMC apoptosis and induced increases in procaspase-9 cleavage, caspase-3 activation, cytochrome c release from mitochondria to the cytoplasm and the Bax/Bcl-2 ratio but not caspase-8 expression, indicating that the mitochondrial apoptotic cascade was activated by MRSP, which might be attributed to suppression of the PI3K/Akt signaling pathway. We further found that the PI3K agonist 740 Y-P prevented and that the inhibitor LY294002 strengthened the proapoptotic effects of MRSP. MRSP strongly inhibited neointimal hyperplasia and VSMC accumulation, but increased VSMC apoptosis in the vascular wall after balloon injury. Moreover, MRSP substantially enhanced Bax and cleaved caspase-3 expression and decreased Bcl-2 levels in intima, accompanied by decreased levels of phosphorylated Akt and PI3K in vivo. Conclusions Taken together, the present study showed that MRSP treatment results in a strong proapoptotic effect by activating the mitochondrial apoptotic cascade through suppression of the PI3K/Akt pathway. Supplementary Information The online version contains supplementary material available at 10.1186/s12967-021-03064-1.
Collapse
Affiliation(s)
- Xinxin Zhang
- Department of Cardiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Xiangyu Xu
- Department of Cardiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.,Department of Cardiology, The Second Hospital, Cheeloo College of Medicine, Shandong University, Shandong, China
| | - Li Lu
- Department of Cardiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.,Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Xiaoning Wan
- Department of Cardiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Yating Qin
- Department of Cardiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Weibin Ruan
- Department of Cardiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Chao Lv
- Department of Cardiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Lin He
- Department of Cardiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.,Bio-X Institutes, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders (Ministry of Education), Shanghai Jiaotong University, Shanghai, China
| | - Xiaomei Guo
- Department of Cardiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
| |
Collapse
|
11
|
Chen Y, Wei X, Zhang Z, He Y, Huo B, Guo X, Feng X, Fang ZM, Jiang DS, Zhu XH. Downregulation of Filamin a Expression in the Aorta Is Correlated With Aortic Dissection. Front Cardiovasc Med 2021; 8:690846. [PMID: 34485398 PMCID: PMC8414519 DOI: 10.3389/fcvm.2021.690846] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2021] [Accepted: 07/13/2021] [Indexed: 12/23/2022] Open
Abstract
Filamins (FLNs) are actin cross-linking proteins, and as scaffolding proteins, FLNs are closely associated with the stabilization of the cytoskeleton. Nevertheless, the biological importance of FLNs in aortic dissection (AD) has not been well-elucidated. In this study, we first reanalyzed datasets downloaded from the Gene Expression Omnibus (GEO) database, and we found that in addition to the extracellular matrix, the actin cytoskeleton is a key structure associated with AD. Given that FLNs are involved in remodeling the cytoskeleton to affect cellular functions, we measured their expression levels in the aortas of patients with Stanford type A AD (TAAD). Our results showed that the mRNA and protein levels of FLNA were consistently decreased in dissected aortas of both humans and mice, while the FLNB protein level was upregulated despite decreased FLNB mRNA levels, and comparable expression levels of FLNC were observed between groups. Furthermore, the immunohistochemistry results demonstrated that FLNA was highly expressed in smooth muscle cells (SMCs) of aorta in non-AD samples, and downregulated in the medial layer of the dissected aortas of humans and mice. Moreover, we revealed that FOS and JUN, forming a dimeric transcription factor called AP-1 (activating protein-1), were positively correlated with the expression of FLNA in aorta. Either overexpression of FOS or JUN alone, or overexpression of FOS and JUN together, facilitated the expression of FLNA in primary cultured human aortic SMCs. In the present study, we not only detected the expression pattern of FLNs in aortas of humans and mice with or without AD, but we also found that the expression of FLNA in the AD samples was significantly reduced and that AP-1 might regulate the expression of FLNA. Our findings will contribute to the elucidation of the pathological mechanisms of AD and provide potential therapeutic targets for AD.
Collapse
Affiliation(s)
- Yue Chen
- Division of Cardiothoracic and Vascular Surgery, Sino-Swiss Heart-Lung Transplantation Institute, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xiang Wei
- Division of Cardiothoracic and Vascular Surgery, Sino-Swiss Heart-Lung Transplantation Institute, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Key Laboratory of Organ Transplantation, Ministry of Education, Chinese Academy of Medical Sciences, Wuhan, China.,NHC Key Laboratory of Organ Transplantation, Chinese Academy of Medical Sciences, Wuhan, China.,Key Laboratory of Organ Transplantation, Chinese Academy of Medical Sciences, Wuhan, China
| | - Zihao Zhang
- Division of Cardiothoracic and Vascular Surgery, Sino-Swiss Heart-Lung Transplantation Institute, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yi He
- Division of Cardiothoracic and Vascular Surgery, Sino-Swiss Heart-Lung Transplantation Institute, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Bo Huo
- Division of Cardiothoracic and Vascular Surgery, Sino-Swiss Heart-Lung Transplantation Institute, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xian Guo
- Division of Cardiothoracic and Vascular Surgery, Sino-Swiss Heart-Lung Transplantation Institute, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xin Feng
- Division of Cardiothoracic and Vascular Surgery, Sino-Swiss Heart-Lung Transplantation Institute, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ze-Min Fang
- Division of Cardiothoracic and Vascular Surgery, Sino-Swiss Heart-Lung Transplantation Institute, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ding-Sheng Jiang
- Division of Cardiothoracic and Vascular Surgery, Sino-Swiss Heart-Lung Transplantation Institute, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Key Laboratory of Organ Transplantation, Ministry of Education, Chinese Academy of Medical Sciences, Wuhan, China.,NHC Key Laboratory of Organ Transplantation, Chinese Academy of Medical Sciences, Wuhan, China.,Key Laboratory of Organ Transplantation, Chinese Academy of Medical Sciences, Wuhan, China
| | - Xue-Hai Zhu
- Division of Cardiothoracic and Vascular Surgery, Sino-Swiss Heart-Lung Transplantation Institute, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Key Laboratory of Organ Transplantation, Ministry of Education, Chinese Academy of Medical Sciences, Wuhan, China.,NHC Key Laboratory of Organ Transplantation, Chinese Academy of Medical Sciences, Wuhan, China.,Key Laboratory of Organ Transplantation, Chinese Academy of Medical Sciences, Wuhan, China
| |
Collapse
|
12
|
Wang S, Feng W, Wang W, Ye X, Chen H, Yu C. Girdin Knockdown Increases Gemcitabine Chemosensitivity to Pancreatic Cancer by Modulating Autophagy. Front Oncol 2021; 11:618764. [PMID: 33854963 PMCID: PMC8039524 DOI: 10.3389/fonc.2021.618764] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2020] [Accepted: 02/26/2021] [Indexed: 12/11/2022] Open
Abstract
Chemotherapy is crucial for the treatment of pancreatic cancer (PC). Gemcitabine (GEM) as the first-line chemotherapy drug has a high resistance rate. Increasing the sensitivity of gemcitabine is currently the objectives and challenges of this study. Our previous study showed Girdin was closely related to the progression and prognosis of PC, indicating that Girdin may be associated with chemosensitivity. In the current study, we use recombinant adenovirus to specifically knockdown Girdin in PC cell lines to determine the effect of Girdin in the process of gemcitabine chemosensitivity. Autophagy is one of the pathways affecting the gemcitabine chemosensitivity in PC. Further research validated that Girdin may activate autophagy by interacting with autophagy protein p62/SQSTM1, which could enhance chemotherapy resistance to gemcitabine in PC. Down-regulation of Girdin may therefore increase gemcitabine chemosensitivity in PC. Our results reveal that Girdin acted as a negative regulator of gemcitabine chemosensitivity in PC. Increased autophagy activity caused by abnormally high Girdin expression may be one of the main factors for the reduction in chemosensitivity, which may provide new perspectives on understanding chemosensitization in PC.
Collapse
Affiliation(s)
- Sheng Wang
- Department of General Surgery, The Affiliated Suqian Hospital of Xuzhou Medical University, Suqian, China
| | - Wei Feng
- Department of General Surgery, The Affiliated Suqian Hospital of Xuzhou Medical University, Suqian, China
| | - Wulin Wang
- Department of General Surgery, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Xiaoman Ye
- Department of Critical Care Medicine, The Fourth Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Hao Chen
- Department of General Surgery, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Chunzhao Yu
- Department of General Surgery, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, China
| |
Collapse
|
13
|
Li XY, Zhang HM, An GP, Liu MY, Han SF, Jin Q, Song Y, Lin YM, Dong B, Wang SX, Meng LB. S-Nitrosylation of Akt by organic nitrate delays revascularization and the recovery of cardiac function in mice following myocardial infarction. J Cell Mol Med 2020; 25:27-36. [PMID: 33128338 PMCID: PMC7810919 DOI: 10.1111/jcmm.15263] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2019] [Revised: 02/29/2020] [Accepted: 03/20/2020] [Indexed: 12/26/2022] Open
Abstract
The effects of long‐term nitrate therapy are compromised due to protein S‐Nitrosylation, which is mediated by nitric oxide (NO). This study is to determine the role of Akt S‐Nitrosylation in the recovery of heart functions after ischaemia. In recombinant Akt protein and in HEK293 cells, NO donor decreased Akt activity and induced Akt S‐Nitrosylation, but was abolished if Akt protein was mutated by replacing cysteine 296/344 with alanine (Akt‐C296/344A). In endothelial cells, NO induced Akt S‐Nitrosylation, reduced Akt activity and damaged multiple cellular functions including proliferation, migration and tube formation. These alterations were ablated if cells expressed Akt‐C296/344A mutant. In Apoe−/− mice, nitroglycerine infusion increased both Akt S‐Nitrosylation and infarct size, reduced Akt activity and capillary density, and delayed the recovery of cardiac function in ischaemic hearts, compared with mice infused with vehicle. Importantly, these in vivo effects of nitroglycerine in Apoe−/− mice were remarkably prevented by adenovirus‐mediated enforced expression of Akt‐C296/344A mutant. In conclusion, long‐term usage of organic nitrate may inactivate Akt to delay ischaemia‐induced revascularization and the recovery of cardiac function through NO‐mediated S‐Nitrosylation.
Collapse
Affiliation(s)
- Xiao-Yan Li
- Department of Cardiology, the 960thHospital of Chinese People's Liberation Army, Jinan, China
| | - Hong-Ming Zhang
- Department of Cardiology, the 960thHospital of Chinese People's Liberation Army, Jinan, China
| | - Gui-Peng An
- Department of Cardiology, Qilu Hospital of Shandong University, Jinan, China
| | - Mo-Yan Liu
- Department of Cardiology, the 960thHospital of Chinese People's Liberation Army, Jinan, China
| | - Shu-Fang Han
- Department of Cardiology, the 960thHospital of Chinese People's Liberation Army, Jinan, China
| | - Qun Jin
- Department of Cardiology, the 960thHospital of Chinese People's Liberation Army, Jinan, China
| | - Ying Song
- Department of Cardiology, the 960thHospital of Chinese People's Liberation Army, Jinan, China
| | - Yi-Meng Lin
- Department of Cardiology, the 960thHospital of Chinese People's Liberation Army, Jinan, China
| | - Bo Dong
- Department of Cardiology, Qilu Hospital of Shandong University, Jinan, China.,Department of Cardiology, Shandong Provincial Hospital, Shandong University, Jinan, China
| | - Shuang-Xi Wang
- Department of Cardiology, Qilu Hospital of Shandong University, Jinan, China
| | - Ling-Bo Meng
- Department of Cardiology, The Second Hospital affiliated to Harbin Medical University, Harbin, China
| |
Collapse
|
14
|
Spadaccio C, Antoniades C, Nenna A, Chung C, Will R, Chello M, Gaudino MFL. Preventing treatment failures in coronary artery disease: what can we learn from the biology of in-stent restenosis, vein graft failure, and internal thoracic arteries? Cardiovasc Res 2020; 116:505-519. [PMID: 31397850 DOI: 10.1093/cvr/cvz214] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Revised: 06/01/2019] [Accepted: 08/08/2019] [Indexed: 12/18/2022] Open
Abstract
Coronary artery disease (CAD) remains one of the most important causes of morbidity and mortality worldwide, and the availability of percutaneous or surgical revascularization procedures significantly improves survival. However, both strategies are daunted by complications which limit long-term effectiveness. In-stent restenosis (ISR) is a major drawback for intracoronary stenting, while graft failure is the limiting factor for coronary artery bypass graft surgery (CABG), especially using veins. Conversely, internal thoracic artery (ITA) is known to maintain long-term patency in CABG. Understanding the biology and pathophysiology of ISR and vein graft failure (VGF) and mechanisms behind ITA resistance to failure is crucial to combat these complications in CAD treatment. This review intends to provide an overview of the biological mechanisms underlying stent and VGF and of the potential therapeutic strategy to prevent these complications. Interestingly, despite being different modalities of revascularization, mechanisms of failure of stent and saphenous vein grafts are very similar from the biological standpoint.
Collapse
Affiliation(s)
- Cristiano Spadaccio
- Department of Cardiac Surgery, Golden Jubilee National Hospital, Agamemnon St, Clydebank, G81 4DY Glasgow, UK
| | | | - Antonio Nenna
- Department of Cardiovascular Surgery, Università Campus Bio-Medico di Roma, Rome, Italy
| | - Calvin Chung
- Department of Cardiac Surgery, Golden Jubilee National Hospital, Agamemnon St, Clydebank, G81 4DY Glasgow, UK
| | - Ricardo Will
- Department of Cardiac Surgery, Golden Jubilee National Hospital, Agamemnon St, Clydebank, G81 4DY Glasgow, UK
| | - Massimo Chello
- Department of Cardiovascular Surgery, Università Campus Bio-Medico di Roma, Rome, Italy
| | - Mario F L Gaudino
- Department of Cardiothoracic Surgery, Weill Cornell Medicine, New York, NY, USA
| |
Collapse
|
15
|
A novel selective PPARα modulator, pemafibrate promotes ischemia-induced revascularization through the eNOS-dependent mechanisms. PLoS One 2020; 15:e0235362. [PMID: 32584895 PMCID: PMC7316279 DOI: 10.1371/journal.pone.0235362] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Accepted: 06/13/2020] [Indexed: 12/14/2022] Open
Abstract
Objective Cardiovascular disease is a leading cause of death worldwide. Obesity-related metabolic disorders including dyslipidemia cause impaired collateralization under ischemic conditions, thereby resulting in exacerbated cardiovascular dysfunction. Pemafibrate is a novel selective PPARα modulator, which has been reported to improve atherogenic dyslipidemia, in particular, hypertriglyceridemia and low HDL-cholesterol. Here, we investigated whether pemafibrate modulates the revascularization process in a mouse model of hindlimb ischemia. Methods and results Male wild-type (WT) mice were randomly assigned to two groups, normal diet or pemafibrate admixture diet from the ages of 6 weeks. After 4 weeks, mice were subjected to unilateral hindlimb surgery to remove the left femoral artery and vein. Pemafibrate treatment enhanced blood flow recovery and capillary formation in ischemic limbs of mice, which was accompanied by enhanced phosphorylation of endothelial nitric oxide synthase (eNOS). Treatment of cultured endothelial cells with pemafibrate resulted in increased network formation and migratory activity, which were blocked by pretreatment with the NOS inhibitor NG-nitro-L-arginine methyl ester (L-NAME). Pemafibrate treatment also increased plasma levels of the PPARα-regulated gene, fibroblast growth factor (FGF) 21 in WT mice. Systemic administration of adenoviral vectors expressing FGF21 (Ad-FGF21) to WT mice enhanced blood flow recovery, capillary density and eNOS phosphorylation in ischemic limbs. Treatment of cultured endothelial cells with FGF21 protein led to increases in endothelial cell network formation and migration, which were canceled by pretreatment with L-NAME. Furthermore, administration of pemafibrate or Ad-FGF21 had no effects on blood flow in ischemic limbs in eNOS-deficient mice. Conclusion These data suggest that pemafibrate can promote revascularization in response to ischemia, at least in part, through direct and FGF21-mediated modulation of endothelial cell function. Thus, pemafibrate could be a potentially beneficial drug for ischemic vascular disease.
Collapse
|
16
|
Duan Y, Zhang Y, Qu C, Yu W, Shen C. CKLF1 aggravates neointimal hyperplasia by inhibiting apoptosis of vascular smooth muscle cells through PI3K/AKT/NF-κB signaling. Biomed Pharmacother 2019; 117:108986. [PMID: 31387172 DOI: 10.1016/j.biopha.2019.108986] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Revised: 05/08/2019] [Accepted: 05/13/2019] [Indexed: 12/20/2022] Open
Abstract
Chemokine-like factor 1 (CKLF1) is a cytokine, which has a detrimental effect on the multiple disease progression. Our previous studies reported that arterial injury induced the upregulation of CKLF1 expression in artery at 7-14 days after injury. Here, using a rat carotid balloon injury model, we found that CKLF1 knockdown in the injured site abolished neointimal formation and even decreased medial area; contrarily, CKLF1 overexpression developed a thicker neointima than controls, demonstrating that CKLF1 exerted positive effects on neointimal hyperplasia and the accumulation of vascular smooth muscle cells (VSMC). The mechanism study indicated that CKLF1 reduced susceptibility to the cell cycle G2/M arrest and apoptosis, and thereby speeding up VSMC accumulation. This role of CKLF1 was tightly associated with phosphatidylinositol (PI) 3-kinase signaling pathway. CKLF1 increased the expression of four isoforms of the PI3-kinase catalytic subunits, which in turn activated its downstream targets Akt and an effector NF-κB accepted as critical transcription factors of cell survival and proliferation. Furthermore, RNA-sequencing analysis revealed that CKLF1 had wide-ranging roles in regulating the expression of genes that mainly engaged in cell apoptosis and innate immune response. Collectively, the data allow us to conclude that high level CKLF1 after artery injury switches the balance of VSMC proliferation and apoptosis through PI3K/AKT/NF-κB signaling and consequently leads to neointimal hyperplasia. The findings shed insight into new treatment strategies to limit restenosis based on CKLF1 as a future target.
Collapse
Affiliation(s)
- Yanyu Duan
- Department of Vascular Surgery, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China; Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases of Ministry of Education, First Affiliated Hospital of Gannan Medical University, Gannan Medical University, Ganzhou 341000, China
| | - Yongbao Zhang
- Department of Vascular Surgery, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - Chengjia Qu
- Department of Vascular Surgery, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - Weidong Yu
- Department of Central Laboratory, Peking University People's Hospital, Beijing 100044, China
| | - Chenyang Shen
- Department of Vascular Surgery, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China.
| |
Collapse
|
17
|
Lan Y, Li YJ, Li DJ, Li P, Wang JY, Diao YP, Ye GD, Li YF. Long noncoding RNA MEG3 prevents vascular endothelial cell senescence by impairing miR-128-dependent Girdin downregulation. Am J Physiol Cell Physiol 2018; 316:C830-C843. [PMID: 30576236 DOI: 10.1152/ajpcell.00262.2018] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Long noncoding RNAs (lncRNAs) are commonly associated with various biological functions, in which the function of lncRNA maternally expressed gene 3 (MEG3) has been identified in various cancers. Strikingly, an association between MEG3 with microRNAs (miRNAs), mRNAs, and proteins has been reported. This study investigates the role of MEG3 in vascular endothelial cell (VEC) senescence. Expression of Girdin and miR-128 was monitored in the blood vessel samples of young and old mice/healthy volunteers, along with the measurement of human umbilical vein endothelial cells (HUVECs). The relationship between MEG3/Girdin and miR-128 was determined and verified. Loss- and gain-of-function approaches were applied to analyze the regulatory effects of MEG3 on platelet phagocytosis and lipoprotein oxidation of HUVEC membrane. In addition, the effect of MEG3 on HUVEC senescence was evaluated by detection of the reactive oxygen species, telomerase activity, and telomere length. To further analyze the MEG3-mediated regulatory mechanism, miR-128 upregulation and inhibition were introduced into the HUVECs. Downregulated Girdin and upregulated miR-128 were found in the blood vessels of old individuals and old mice, as well as in senescent HUVECs. MEG3 downregulation was found to be capable of inhibiting Girdin but enhancing miR-128 expression. It was also indicated to inhibit platelet phagocytosis and reduce telomerase activity and telomere length, while enhancing lipoprotein oxidation and reactive oxygen species production, which ultimately contributed in preventing and protecting HUEVCs from senescence. These findings provide evidence supporting that MEG3 leads to miR-128 downregulation and Girdin upregulation, which promotes platelet phagocytosis, thus protecting VECs from senescence.
Collapse
Affiliation(s)
- Yong Lan
- National Center of Gerontology, Department of Vascular Surgery, Beijing Hospital , Beijing , People's Republic of China
| | - Yong-Jun Li
- National Center of Gerontology, Department of Vascular Surgery, Beijing Hospital , Beijing , People's Republic of China
| | - Da-Jun Li
- National Center of Gerontology, Department of Vascular Surgery, Beijing Hospital , Beijing , People's Republic of China
| | - Peng Li
- National Center of Gerontology, Department of Vascular Surgery, Beijing Hospital , Beijing , People's Republic of China
| | - Ji-Yang Wang
- National Center of Gerontology, Department of Vascular Surgery, Beijing Hospital , Beijing , People's Republic of China
| | - Yong-Peng Diao
- National Center of Gerontology, Department of Vascular Surgery, Beijing Hospital , Beijing , People's Republic of China
| | - Guo-Dong Ye
- National Center of Gerontology, Department of Vascular Surgery, Beijing Hospital , Beijing , People's Republic of China
| | - Yang-Fang Li
- Beijing Neurosurgical Institute, Capital Medical University , Beijing , People's Republic of China
| |
Collapse
|
18
|
GIV/Girdin promotes cell survival during endoplasmic reticulum stress. Mol Cell Biochem 2018; 453:79-88. [PMID: 30145643 DOI: 10.1007/s11010-018-3433-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Accepted: 08/21/2018] [Indexed: 12/30/2022]
Abstract
Endoplasmic reticulum (ER) stress is a form of cellular stress that is experienced by cells both under normal physiological conditions such as in professional secretory cells and disease states such as cancer, diabetes, and neurodegeneration. Upon facing ER stress, cells activate a conserved signaling pathway called the unfolded protein response (UPR) to restore normal function by halting general protein translation, upregulating expression of chaperones, and promoting ER-associated degradation. However, if the stress is overwhelming and cells are not able to recover within a reasonable time frame, the UPR ultimately commits cells to programmed cell death. How cells make this life-or-death decision remains an exciting yet poorly understood phenomenon. Here, we show that Gα-interacting vesicle-associated protein (GIV) aka Girdin plays an important role in promoting cell survival during ER stress. Cells lacking GIV are impaired in activating the pro-survival Akt pathway upon induction of ER stress. These cells also show enhanced levels of the pro-apoptotic transcription factor, CCAAT/enhancer binding protein homologous protein (CHOP) as compared to control cells. Due to decreased pro-survival signals and a concomitant increase in pro-apoptotic signals, GIV-depleted cells show a significant reduction in cell survival upon prolonged ER stress which can be rescued by re-expression of GIV or by directly activating Akt in these cells. Together, this study shows a novel, cytoprotective role for GIV in ER-stressed cells and furthers our understanding of the mechanisms that contribute to cell survival during ER stress.
Collapse
|
19
|
Zhang HM, Liu MY, Lu JX, Zhu ML, Jin Q, Ping S, Li P, Jian X, Han YL, Wang SX, Li XY. Intracellular acidosis via activation of Akt-Girdin signaling promotes post ischemic angiogenesis during hyperglycemia. Int J Cardiol 2018; 277:205-211. [PMID: 30316647 DOI: 10.1016/j.ijcard.2018.08.028] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/25/2018] [Revised: 08/07/2018] [Accepted: 08/09/2018] [Indexed: 10/28/2022]
Abstract
AIMS The impaired angiogenesis is the major cause of diabetic delayed wound healing. The molecular insight remains unknown. Previous study has shown that high glucose (HG) activates Na+/H+ exchanger 1 (NHE1) and induces intracellular alkalinization, resulting in endothelial dysfunction. The aim of this study is to investigate whether activation of NHE1 in endothelial cells by HG damages the angiogenesis in vitro and in vivo. METHODS AND RESULTS We used western blot to detect the phosphorylations of both Akt and Girdin, and pH-sensitive BCECF fluorescence to assay NHE1 activity and pHi value, respectively. The angiogenesis was evaluated by measuring the number of tube formation in vitro, and blood perfusion by laser doppler and neovascularization by staining CD31 in vivo. Our results indicated that induction of intracellular acidosis (IA) increased p-Akt and p-Girdin in human umbilical vein endothelial cells (HUVEC). HG activated NHE1 and increased pHi value in a time-dependent manner, associated with the decreased phosphorylations of both Akt and Gridin, while inhibition of NHE1 by amiloride abolished the HG-induced reductions of p-Akt and p-Girdin. However, silence of Akt by siRNA transfection or pharmacological inhibitors (wortmannin and LY294002) bypassed IA-induced Girdin phosphorylation. Overexpression of constitutively active Akt abolished HG-reduced Girdin phosphorylation. In addition, upregulation of Akt or inhibition of NHE1 remarkably attenuated HG-impaired tube formation in HUVEC. In vivo study revealed that amiloride dramatically rescued hyperglycemia-delayed blood perfusion and neovascularization by augmenting ischemia-induced angiogenesis. CONCLUSION IA promotes ischemia-induced angiogenesis via Akt-dependent Girdin phosphorylation in diabetic mice.
Collapse
Affiliation(s)
- Hong-Ming Zhang
- Department of Cardiology, General Hospital of Jinan Military Command, Jinan, China
| | - Mo-Yan Liu
- Department of Cardiology, General Hospital of Jinan Military Command, Jinan, China
| | - Jun-Xiu Lu
- Department of Pharmacology, College of Pharmacy, Xinxiang Medical University, Xinxiang, China
| | - Mo-Li Zhu
- Department of Pharmacology, College of Pharmacy, Xinxiang Medical University, Xinxiang, China
| | - Qun Jin
- Department of Cardiology, General Hospital of Jinan Military Command, Jinan, China
| | - Song Ping
- Department of Pharmacology, College of Pharmacy, Xinxiang Medical University, Xinxiang, China
| | - Peng Li
- Department of Pharmacology, College of Pharmacy, Xinxiang Medical University, Xinxiang, China
| | - Xu Jian
- Department of Pharmacology, College of Pharmacy, Xinxiang Medical University, Xinxiang, China
| | - Ya-Ling Han
- Department of Cardiology, General Hospital of Shenyang Military Command, Shenyang, China.
| | - Shuang-Xi Wang
- Department of Pharmacology, College of Pharmacy, Xinxiang Medical University, Xinxiang, China; The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences, The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Department of Cardiology, Qilu Hospital of Shandong University, Jinan, China.
| | - Xiao-Yan Li
- Department of Cardiology, General Hospital of Jinan Military Command, Jinan, China.
| |
Collapse
|
20
|
Wang S, Lei Y, Cai Z, Ye X, Li L, Luo X, Yu C. Girdin regulates the proliferation and apoptosis of pancreatic cancer cells via the PI3K/Akt signalling pathway. Oncol Rep 2018; 40:599-608. [PMID: 29901184 PMCID: PMC6072288 DOI: 10.3892/or.2018.6469] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2018] [Accepted: 05/25/2018] [Indexed: 12/20/2022] Open
Abstract
Girdin functions as an Akt phosphorylation enhancer (APE), which expedites the proliferation and survival of many types of tumours. However, the influence of Girdin on pancreatic cancer and the underlying molecular mechanisms have yet to be uncovered. Hence, in the present study, we sought to elucidate the function of Girdin in pancreatic cancer malignancy, particularly its role in pancreatic cancer cell proliferation, migration and apoptosis. Immunohistochemistry (IHC) was used to evaluate Girdin expression in pancreatic cancer tissues and to analyse its correlation with pathological grade. Girdin expression was further validated in pancreatic cancer cell lines (AsPC-1, BxPC-3 and PANC-1), and human pancreatic ductal epithelial (HPNE) cells were used as a control. Recombinant adenovirus vectors containing Girdin-siRNA were constructed to inhibit Girdin expression and were used in subsequent experiments to determine the effects of Girdin silencing on pancreatic cancer cells. Girdin silencing suppressed pancreatic cancer cell proliferation and induced pancreatic cancer cell apoptosis in vitro and in vivo. According to the results of further mechanistic investigations, Girdin may regulate cell processes through the phosphatidylinositol-3-kinase/protein kinase B (PI3K/Akt) signalling pathway to exert additive effects on pancreatic cancer.
Collapse
Affiliation(s)
- Sheng Wang
- Department of General Surgery, The Second Clinical Medical School of Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Yiqun Lei
- Department of General Surgery, The Second Clinical Medical School of Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Zeling Cai
- Department of General Surgery, The Second Clinical Medical School of Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Xiaoman Ye
- Department of Gerontology, Jiangsu Province Hospital, Nanjing, Jiangsu 210029, P.R. China
| | - Lianhong Li
- Department of General Surgery, The Second Clinical Medical School of Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Xiagang Luo
- Department of General Surgery, The Second Clinical Medical School of Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Chunzhao Yu
- Department of General Surgery, The Second Clinical Medical School of Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| |
Collapse
|
21
|
Wang H, He H, Meng H, Cui Y, Wang W. Effects of Grb2-associated binding protein 2-specific siRNA on the migration and invasion of MG-63 osteosarcoma cells. Oncol Lett 2018; 15:926-930. [PMID: 29422967 PMCID: PMC5772958 DOI: 10.3892/ol.2017.7375] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2015] [Accepted: 04/13/2017] [Indexed: 12/19/2022] Open
Abstract
To investigate the association between the expression of growth factor receptor binding protein 2-associated binding protein 2 (Gab2) in human osteosarcoma as well as the effects of Gab2 on invasion and metastasis, human MG-63 osteosarcoma cells were transfected with small interfering (si)RNA plasmid. Gab2 protein and mRNA expression levels were detected using western blotting and reverse transcription-polymerase chain reaction, respectively. The cell migration and invasion abilities were detected using in vitro chemotaxis and invasion assays, respectively, following siRNA vector expression. Gab2 was markedly expressed in MG-63 cells. The Gab2 protein and mRNA expression levels of the cells transfected with Gab2 siRNA (siGab2/MG-63) were reduced compared with those of the cells transfected with scrambled siRNA (Scr/MG-63). The chemotaxis assay demonstrated that the migration capacity of siGab2/MG-63 cells induced by 10 µg/l epidermal growth factor, was significantly reduced compared with that of the MG-63 and Scr/MG-63 cells (P<0.01). In comparison with Scr/MG-63 and MG-63 cells, a reduced number of siGab2/MG-63 cells invaded the Matrigel matrix, demonstrating that the in vitro invasion capacity was significantly decreased (P<0.01). Decreasing Gab2 expression levels using siRNA interference inhibited the migration and invasion ability of human MG-63 osteosarcoma cells.
Collapse
Affiliation(s)
- Huan Wang
- Department of Orthopedic Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
| | - Hui He
- Department of Orthopedic Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
| | - Hongmei Meng
- Department of Orthopedic Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
| | - Yang Cui
- Department of Orthopedic Surgery, The First Hospital of Qiqihar, Qiqihar, Heilongjiang 161000, P.R. China
| | - Wenbo Wang
- Department of Orthopedic Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
| |
Collapse
|
22
|
Silencing the Girdin gene enhances radio-sensitivity of hepatocellular carcinoma via suppression of glycolytic metabolism. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2017; 36:110. [PMID: 28810896 PMCID: PMC5558715 DOI: 10.1186/s13046-017-0580-7] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/18/2017] [Accepted: 08/09/2017] [Indexed: 12/20/2022]
Abstract
Background Radiotherapy has been used increasingly to treat primary hepatocellular carcinoma. Clinically, the main cause of radiotherapy failure is cellular radioresistance, conferred via glycolytic metabolism. Our previous study demonstrated that Girdin is upregulated in primary hepatocellular carcinoma and promotes the invasion and metastasis of tumor cells. However, whether Girdin underlies the radio-sensitivity of hepatocellular carcinoma remains unclear. Methods A short hairpin RNA (shRNA) was used to silence CCDC88A (encoding Girdin), and real-time PCR was performed to determine CCDC88A mRNA expression. Then, cell proliferation, colony formation, flow cytometric, scratch, and transwell assays were to examine the influence of Girdin silencing on cellular radiosensitivity. Glycolysis assays were conducted to exam cell glycolysis process. Western blotting was performed to explore the signaling pathway downstream of Girdin. Finally, animal experiments were performed to demonstrate the effect of CCDC88A silencing on the radiosensitivity of hepatoma in vivo. Results shRNA-induced Girdin silencing suppressed glycolysis and enhanced the radio-sensitivity of hepatic cell lines, HepG2 and Huh-7. Furthermore, silencing of Girdin inhibited the PI3K/AKT/HIF-1α signaling pathway, which is a central regulator of glycolysis. Conclusion Girdin can regulate glycolysis in hepatocellular carcinoma cells through the PI3K/AKT/HIF-1α signaling pathway, which decreases the sensitivity of tumor cells to radiotherapy. Electronic supplementary material The online version of this article (doi:10.1186/s13046-017-0580-7) contains supplementary material, which is available to authorized users.
Collapse
|
23
|
Ghosh P, Aznar N, Swanson L, Lo IC, Lopez-Sanchez I, Ear J, Rohena C, Kalogriopoulos N, Joosen L, Dunkel Y, Sun N, Nguyen P, Bhandari D. Biochemical, Biophysical and Cellular Techniques to Study the Guanine Nucleotide Exchange Factor, GIV/Girdin. CURRENT PROTOCOLS IN CHEMICAL BIOLOGY 2016; 8:265-298. [PMID: 27925669 PMCID: PMC5154557 DOI: 10.1002/cpch.13] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Canonical signal transduction via heterotrimeric G proteins is spatiotemporally restricted, i.e., triggered exclusively at the plasma membrane, only by agonist activation of G protein-coupled receptors via a finite process that is terminated within a few hundred milliseconds. Recently, a rapidly emerging paradigm has revealed a noncanonical pathway for activation of heterotrimeric G proteins via the nonreceptor guanidine-nucleotide exchange factor, GIV/Girdin. Biochemical, biophysical, and functional studies evaluating this pathway have unraveled its unique properties and distinctive spatiotemporal features. As in the case of any new pathway/paradigm, these studies first required an in-depth optimization of tools/techniques and protocols, governed by rationale and fundamentals unique to the pathway, and more specifically to the large multimodular GIV protein. Here we provide the most up-to-date overview of protocols that have generated most of what we know today about noncanonical G protein activation by GIV and its relevance in health and disease. © 2016 by John Wiley & Sons, Inc.
Collapse
Affiliation(s)
- Pradipta Ghosh
- Department of Cellular and Molecular Medicine, University of California at San Diego, La Jolla, CA 92093-0651
- Department of Medicine, University of California at San Diego, La Jolla, CA 92093-0651
| | - Nicolas Aznar
- Department of Medicine, University of California at San Diego, La Jolla, CA 92093-0651
| | - Lee Swanson
- Department of Medicine, University of California at San Diego, La Jolla, CA 92093-0651
| | - I-Chung Lo
- Department of Cellular and Molecular Medicine, University of California at San Diego, La Jolla, CA 92093-0651
| | | | - Jason Ear
- Department of Medicine, University of California at San Diego, La Jolla, CA 92093-0651
| | - Cristina Rohena
- Department of Medicine, University of California at San Diego, La Jolla, CA 92093-0651
| | | | - Linda Joosen
- Department of Medicine, University of California at San Diego, La Jolla, CA 92093-0651
| | - Ying Dunkel
- Department of Medicine, University of California at San Diego, La Jolla, CA 92093-0651
| | - Nina Sun
- Department of Medicine, University of California at San Diego, La Jolla, CA 92093-0651
| | - Peter Nguyen
- Department of Chemistry and Biochemistry, California State University Long Beach, Long Beach, CA 90840-9507
| | - Deepali Bhandari
- Department of Chemistry and Biochemistry, California State University Long Beach, Long Beach, CA 90840-9507
| |
Collapse
|
24
|
Lu S, Liu H, Lu L, Wan H, Lin Z, Qian K, Yao X, Chen Q, Liu W, Yan J, Liu Z. WISP1 overexpression promotes proliferation and migration of human vascular smooth muscle cells via AKT signaling pathway. Eur J Pharmacol 2016; 788:90-97. [DOI: 10.1016/j.ejphar.2016.06.027] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2016] [Revised: 06/15/2016] [Accepted: 06/15/2016] [Indexed: 01/03/2023]
|
25
|
Wnt11 Gene Therapy with Adeno-associated Virus 9 Improves Recovery from Myocardial Infarction by Modulating the Inflammatory Response. Sci Rep 2016; 6:21705. [PMID: 26882996 PMCID: PMC4756373 DOI: 10.1038/srep21705] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2015] [Accepted: 01/29/2016] [Indexed: 12/26/2022] Open
Abstract
Acute myocardial infarction induces activation of the acute phase response and infiltration of leukocytes to the infarcted area. Moreover, myocardium that is remote from ischemic area also becomes inflamed. Inflammatory reaction clears dead cells and matrix debris, while prolongation or expansion of the inflammatory response results in dysfunction following myocardial infarction. Wnt glycolipoproteins are best characterized as regulators of embryonic development. Recently several reports suggest that they also contribute to the inflammatory response in adult animals. However, the effects of Wnt proteins on myocardial infarction have not been explored. Here we show that Wnt11 expression leads to significant improvements of survival and cardiac function by suppressing infiltration of multiple kinds of inflammatory cells in infarcted heart. Wnt11 protein suppresses gene expression of inflammatory cytokines through the modulation of NF-κB in vitro. These results reveal a novel function of Wnt11 in the regulation of inflammatory response and provide a rationale for the use of Wnt11 to manipulate human diseases that are mediated by inflammation.
Collapse
|
26
|
Aznar N, Kalogriopoulos N, Midde KK, Ghosh P. Heterotrimeric G protein signaling via GIV/Girdin: Breaking the rules of engagement, space, and time. Bioessays 2016; 38:379-93. [PMID: 26879989 DOI: 10.1002/bies.201500133] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Canonical signal transduction via heterotrimeric G proteins is spatially and temporally restricted, that is, triggered exclusively at the plasma membrane (PM), only by agonist activation of G protein-coupled receptors (GPCRs) via a process that completes within a few hundred milliseconds. Recently, a rapidly emerging paradigm has revealed a non-canonical pathway for activation of heterotrimeric G proteins by the non-receptor guanidine-nucleotide exchange factor (GEF), GIV/Girdin. This pathway has distinctive temporal and spatial features and an unusual profile of receptor engagement: diverse classes of receptors, not just GPCRs can engage with GIV to trigger such activation. Such activation is spatially and temporally unrestricted, that is, can occur both at the PM and on internal membranes discontinuous with the PM, and can continue for prolonged periods of time. Here, we provide the most complete up-to-date review of the molecular mechanisms that govern the unique spatiotemporal aspects of non-canonical G protein activation by GIV and the relevance of this new paradigm in health and disease.
Collapse
Affiliation(s)
- Nicolas Aznar
- Department of Medicine, University of California at San Diego, La Jolla, CA, USA
| | | | - Krishna K Midde
- Department of Medicine, University of California at San Diego, La Jolla, CA, USA
| | - Pradipta Ghosh
- Department of Medicine, University of California at San Diego, La Jolla, CA, USA.,Department of Cell and Molecular Medicine, University of California at San Diego, La Jolla, CA, USA
| |
Collapse
|
27
|
Ghosh P. The untapped potential of tyrosine-based G protein signaling. Pharmacol Res 2016; 105:99-107. [PMID: 26808081 DOI: 10.1016/j.phrs.2016.01.017] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Revised: 01/14/2016] [Accepted: 01/15/2016] [Indexed: 01/14/2023]
Abstract
Tyrosine-based and trimeric G protein-based signaling are the two most widely studied and distinct mechanisms for signal transduction in eukaryotes. How each of them relay signals across the plasma membrane independently of each other has been extensively characterized; however, an understanding of how they work together remained obscure. Recently, a rapidly emerging paradigm has revealed that tyrosine based signals are relayed via G proteins, and that the cross-talk between the two hubs are more robustly and sophisticatedly integrated than was previously imagined. More importantly, by straddling the two signaling hubs that are most frequently targeted for their therapeutic significance, the tyrosine-based G-protein signaling pathway has its own growing list of pathophysiologic importance, both as therapeutic target in a variety of disease states, and by paving the way for personalized medicine. The fundamental principles of this emerging paradigm and its pharmacologic potential are discussed.
Collapse
Affiliation(s)
- Pradipta Ghosh
- Department of Medicine and Department of Cell and Molecular Medicine, University of California at San Diego, La Jolla, CA 92093-0651, United States.
| |
Collapse
|
28
|
Akt-dependent Girdin phosphorylation regulates repair processes after acute myocardial infarction. J Mol Cell Cardiol 2015; 88:55-63. [PMID: 26393439 DOI: 10.1016/j.yjmcc.2015.09.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2015] [Revised: 09/18/2015] [Accepted: 09/18/2015] [Indexed: 12/15/2022]
Abstract
Myocardial infarction is a leading cause of death, and cardiac rupture following myocardial infarction leads to extremely poor prognostic feature. A large body of evidence suggests that Akt is involved in several cardiac diseases. We previously reported that Akt-mediated Girdin phosphorylation is essential for angiogenesis and neointima formation. The role of Girdin expression and phosphorylation in myocardial infarction, however, is not understood. Therefore, we employed Girdin-deficient mice and Girdin S1416A knock-in (Girdin(SA/SA)) mice, replacing the Akt phosphorylation site with alanine, to address this question. We found that Girdin was expressed and phosphorylated in cardiac fibroblasts in vitro and that its phosphorylation was crucial for the proliferation and migration of cardiac fibroblasts. In vivo, Girdin was localized in non-cardiomyocyte interstitial cells and phosphorylated in α-smooth muscle actin-positive cells, which are likely to be cardiac myofibroblasts. In an acute myocardial infarction model, Girdin(SA/SA) suppressed the accumulation and proliferation of cardiac myofibroblasts in the infarcted area. Furthermore, lower collagen deposition in Girdin(SA/SA) mice impaired cardiac repair and resulted in increased mortality attributed to cardiac rupture. These findings suggest an important role of Girdin phosphorylation at serine 1416 in cardiac repair after acute myocardial infarction and provide insights into the complex mechanism of cardiac rupture through the Akt/Girdin-mediated regulation of cardiac myofibroblasts.
Collapse
|
29
|
Ni W, Fang Y, Tong L, Tong Z, Yi F, Qiu J, Wang R, Tong X. Girdin regulates the migration and invasion of glioma cells via the PI3K-Akt signaling pathway. Mol Med Rep 2015; 12:5086-92. [PMID: 26151295 PMCID: PMC4581799 DOI: 10.3892/mmr.2015.4049] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2014] [Accepted: 06/18/2015] [Indexed: 01/10/2023] Open
Abstract
Girdin, an actin‑binding protein, is associated with cell migration and is expressed at high levels in glioma cells. However, the association between girdin and the development of glioma remains to be elucidated. In the present study, short‑hairpin RNA technology was used to silence the gene expression of girdin. The effects of girdin silencing on glioma cell proliferation, migration and invasion were then assessed using a cell viability assay, wound‑healing assay, transwell invasion assay, reverse transcription‑quantitative polymerase chain reaction, western blot analysis and gelatin zymography. The results suggested that girdin silencing inhibited the proliferation, migration and invasion of glioma cells. In addition, the expression levels and activity of matrix metalloproteinase (MMP)‑2 and MMP‑9 were also affected by girdin silencing. Further mechanistic investigation indicated that girdin may regulate glioma cell migration and invasion through the phosphatidylinositol‑3‑kinase/protein kinase B (PI3K‑Akt) signaling pathway. Therefore, the results of the present study provide a theoretical foundation for the development of anticancer drugs.
Collapse
Affiliation(s)
- Weimin Ni
- Department of Human Anatomy, Histology and Embryology, China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Yan Fang
- Department of Human Anatomy, Histology and Embryology, Liaoning Medical University, Jinzhou, Liaoning 121001, P.R. China
| | - Lei Tong
- Department of Human Anatomy, Histology and Embryology, China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Zhaoxue Tong
- Department of Human Anatomy, Histology and Embryology, China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Fuxin Yi
- Department of Neurosurgery, The First Affiliated Hospital of Liaoning Medical University, Jinzhou, Liaoning 121001, P.R. China
| | - Jianwu Qiu
- Department of Neurosurgery, The First Affiliated Hospital of Liaoning Medical University, Jinzhou, Liaoning 121001, P.R. China
| | - Rui Wang
- Department of Neurosurgery, The First Affiliated Hospital of Liaoning Medical University, Jinzhou, Liaoning 121001, P.R. China
| | - Xiaojie Tong
- Department of Human Anatomy, Histology and Embryology, China Medical University, Shenyang, Liaoning 110001, P.R. China
| |
Collapse
|
30
|
Ghosh P. Heterotrimeric G proteins as emerging targets for network based therapy in cancer: End of a long futile campaign striking heads of a Hydra. Aging (Albany NY) 2015; 7:469-74. [PMID: 26224586 PMCID: PMC4543036 DOI: 10.18632/aging.100781] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2015] [Accepted: 07/15/2015] [Indexed: 01/17/2023]
Abstract
Most common diseases, e.g., cancer are driven by not one, but multiple cell surface receptors that trigger and sustain a pathologic signaling network. The largest fraction of therapeutic agents that target individual receptors/pathways eventually fail due to the emergence of compensatory mechanisms that reestablish the pathologic network. Recently, a rapidly emerging paradigm has revealed GIV/Girdin as a central platform for receptor cross-talk which integrates signals downstream of a myriad of cell surface receptors, and modulates several key pathways within downstream signaling network, all via non-canonical activation of trimeric G proteins. Unlike canonical signal transduction via G proteins, which is spatially and temporally restricted, the temporal and spatial features of non-canonical activation of G protein via GIV is unusually unrestricted. Consequently, the GIV●G protein interface serves as a central hub allowing for control over several pathways within the pathologic signaling network, all at once. The relevance of this new paradigm in cancer and other disease states and the pros and cons of targeting the GIV●G protein interface are discussed.
Collapse
Affiliation(s)
- Pradipta Ghosh
- Department of Medicine, University of California at San Diego, La Jolla, CA 92093, USA
| |
Collapse
|
31
|
Abstract
Environmental cues are transmitted to the interior of the cell via a complex network of signaling hubs. Receptor tyrosine kinases (RTKs) and trimeric G proteins are 2 such major signaling hubs in eukaryotes. Canonical signal transduction via trimeric G proteins is spatially and temporally restricted, i.e., triggered exclusively at the plasma membrane (PM) by agonist activation of G-protein-coupled receptors (GPCRs) via a process that completes within a few hundred milliseconds. Recently, a rapidly emerging paradigm has revealed a non-canonical pathway for activation of trimeric G proteins by the non-receptor GEF, GIV/Girdin, that has distinctive temporal and spatial features. Such activation can be triggered by multiple growth factor RTKs, can occur at the PM and on internal membranes discontinuous with the PM, and can continue for prolonged periods of time. The molecular mechanisms that govern such non-canonical G protein activation and the relevance of this new paradigm in health and disease is discussed.
Collapse
Affiliation(s)
- Pradipta Ghosh
- a Department of Medicine ; University of California at San Diego ; La Jolla , CA USA
| |
Collapse
|
32
|
Miyachi H, Takahashi M, Komori K. A Novel Approach against Vascular Intimal Hyperplasia Through the Suppression of Girdin. Ann Vasc Dis 2015; 8:69-73. [PMID: 26131024 DOI: 10.3400/avd.ra.14-00129] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2014] [Accepted: 04/10/2015] [Indexed: 01/26/2023] Open
Abstract
Intimal hyperplasia is an impediment to patency in both arteries after percutaneous angioplasty (PTA) and veingraft. It is well known that migration and proliferation of vascular smooth muscle cells (SMCs) influence the vascular remodeling process, there are no therapies to prevent intimal hyperplasia of post-PTA arteries and vein grafts. Girdin (girders of actin filaments), also known as Gα-interacting vesicle associated protein (GIV) is a novel actin-binding Akt substrate.Girdin is highly expressed in limited types of cells such as smooth muscle cells, neuroblasts, and cancer cells. Girdin is involved in the cell migration, proliferation and remodeling of actin filaments. This study revealed that Girdin is involved with intimal hyperplasia in carotid arteries after balloon injury and vein grafts and vascular SMCs migration and proliferation. There are suggestions that Girdin has pivotal roles in migration and proliferation of vascular SMCs and that gene therapy targeting Girdin could be a novel therapeutic strategy for restenosis after PTA and vein graft failure.
Collapse
Affiliation(s)
- Hiroki Miyachi
- Department of Vascular Surgery, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
| | - Masahide Takahashi
- Department of Pathology, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
| | - Kimihiro Komori
- Department of Vascular Surgery, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
| |
Collapse
|
33
|
Girdin/GIV regulates transendothelial permeability by controlling VE-cadherin trafficking through the small GTPase, R-Ras. Biochem Biophys Res Commun 2015; 461:260-7. [DOI: 10.1016/j.bbrc.2015.04.012] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2015] [Accepted: 04/02/2015] [Indexed: 11/23/2022]
|
34
|
Noda T, Maeda K, Hayano S, Asai N, Enomoto A, Takahashi M, Murohara T. New Endoplasmic Reticulum Stress Regulator, Gipie, Regulates the Survival of Vascular Smooth Muscle Cells and the Neointima Formation After Vascular Injury. Arterioscler Thromb Vasc Biol 2015; 35:1246-53. [DOI: 10.1161/atvbaha.114.304923] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2014] [Accepted: 03/04/2015] [Indexed: 11/16/2022]
Abstract
Objective—
The accumulation of unfolded protein in the endoplasmic reticulum (ER) initiates an adaptive stress response, termed the unfolded protein response. Previous studies suggested that ER stress might be involved in the formation of neointima after vascular injury. We recently discovered a novel regulator of ER stress, 78-kDa glucose-regulated protein–interacting protein induced by ER stress (Gipie). The objective of this study was to elucidate the role of Gipie using models of vascular disease.
Approach and Results—
We investigated the functions of Gipie in cultured vascular smooth muscle cells (VSMCs) and in a vascular injury model of a rat carotid artery. The expression of Gipie was predominantly detected in synthetic VSMCs and to a much lesser extent in contractile VSMCs, which was augmented by treatment with thapsigargin. Gipie knockdown increased the phosphorylation levels of c-Jun N-terminal kinase and the number of apoptotic cells under ER stress. Moreover, Gipie knockdown decreased the mature form of collagen I in synthetic VSMCs. The expression of Gipie was rarely detected in the medial VSMCs of the intact carotid artery, whereas it was detected in most of the neointimal cells and some of the medial VSMCs after balloon injury. Depletion of Gipie in the rat carotid artery attenuated the neointimal thickening, which was accompanied by increased cell death in the neointima. Conversely, overexpression of Gipie augmented the neointimal thickening.
Conclusions—
Gipie participates in the ER stress response in VSMCs and plays an important role in neointima formation after vascular injury.
Collapse
Affiliation(s)
- Tomonori Noda
- From the Departments of Cardiology (T.N., K.M., S.H., T.M.) and Pathology (N.A., A.E., M.T.), Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Kengo Maeda
- From the Departments of Cardiology (T.N., K.M., S.H., T.M.) and Pathology (N.A., A.E., M.T.), Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Shinji Hayano
- From the Departments of Cardiology (T.N., K.M., S.H., T.M.) and Pathology (N.A., A.E., M.T.), Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Naoya Asai
- From the Departments of Cardiology (T.N., K.M., S.H., T.M.) and Pathology (N.A., A.E., M.T.), Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Atsushi Enomoto
- From the Departments of Cardiology (T.N., K.M., S.H., T.M.) and Pathology (N.A., A.E., M.T.), Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Masahide Takahashi
- From the Departments of Cardiology (T.N., K.M., S.H., T.M.) and Pathology (N.A., A.E., M.T.), Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Toyoaki Murohara
- From the Departments of Cardiology (T.N., K.M., S.H., T.M.) and Pathology (N.A., A.E., M.T.), Nagoya University Graduate School of Medicine, Nagoya, Japan
| |
Collapse
|
35
|
Yamamura Y, Asai N, Enomoto A, Kato T, Mii S, Kondo Y, Ushida K, Niimi K, Tsunoda N, Nagino M, Ichihara S, Furukawa K, Maeda K, Murohara T, Takahashi M. Akt-Girdin signaling in cancer-associated fibroblasts contributes to tumor progression. Cancer Res 2015; 75:813-23. [PMID: 25732845 DOI: 10.1158/0008-5472.can-14-1317] [Citation(s) in RCA: 86] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
PI3K-Akt signaling is critical for the development, progression, and metastasis of malignant tumors, but its role in the tumor microenvironment has been relatively little studied. Here, we report that the Akt substrate Girdin, an actin-binding protein that regulates cell migration, is expressed and activated by Akt phosphorylation in cancer-associated fibroblasts (CAF) and blood vessels within the tumor microenvironment. Lewis lung tumors grafted into mice defective in Akt-mediated Girdin phosphorylation (SA transgenic mice) exhibited a decrease in both CAF infiltration and tumor growth, compared with wild-type (WT) host control animals. Contrasting with the findings of other studies, we found that Akt-dependent phosphorylation of Girdin was not a rate-limiting step in the growth of endothelial cells. In addition, Lewis lung tumors displayed limited outgrowth when cotransplanted with CAF derived from tumor-bearing SA transgenic mice, compared with CAF derived from tumor-bearing WT mice. Collectively, our results revealed a role for Akt-mediated Girdin phosphorylation in CAF during tumor progression, highlighting the need to inhibit Akt function in both tumor cells and cells that comprise the tumor microenvironment.
Collapse
Affiliation(s)
- Yumiko Yamamura
- Department of Pathology, Nagoya University Graduate School of Medicine, Showa-ku, Nagoya, Japan. Department of Cardiology, Nagoya University Graduate School of Medicine, Showa-ku, Nagoya, Japan
| | - Naoya Asai
- Department of Pathology, Nagoya University Graduate School of Medicine, Showa-ku, Nagoya, Japan
| | - Atsushi Enomoto
- Department of Pathology, Nagoya University Graduate School of Medicine, Showa-ku, Nagoya, Japan
| | - Takuya Kato
- Department of Pathology, Nagoya University Graduate School of Medicine, Showa-ku, Nagoya, Japan
| | - Shinji Mii
- Department of Pathology, Nagoya University Graduate School of Medicine, Showa-ku, Nagoya, Japan
| | - Yuji Kondo
- Department of Biochemistry, Nagoya University Graduate School of Medicine, Showa-ku, Nagoya, Japan
| | - Kaori Ushida
- Department of Pathology, Nagoya University Graduate School of Medicine, Showa-ku, Nagoya, Japan
| | - Kaoru Niimi
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, Showa-ku, Nagoya, Japan
| | - Nobuyuki Tsunoda
- Department of Surgery, Nagoya University Graduate School of Medicine, Showa-ku, Nagoya, Japan
| | - Masato Nagino
- Department of Surgery, Nagoya University Graduate School of Medicine, Showa-ku, Nagoya, Japan
| | - Shu Ichihara
- Division of Pathology, Department of Advanced Diagnosis, Nagoya Medical Center, Nagoya, Aichi, Japan
| | - Koichi Furukawa
- Department of Biochemistry, Nagoya University Graduate School of Medicine, Showa-ku, Nagoya, Japan
| | - Kengo Maeda
- Department of Cardiology, Nagoya University Graduate School of Medicine, Showa-ku, Nagoya, Japan
| | - Toyoaki Murohara
- Department of Cardiology, Nagoya University Graduate School of Medicine, Showa-ku, Nagoya, Japan
| | - Masahide Takahashi
- Department of Pathology, Nagoya University Graduate School of Medicine, Showa-ku, Nagoya, Japan.
| |
Collapse
|
36
|
Therapeutic effects of cell-permeant peptides that activate G proteins downstream of growth factors. Proc Natl Acad Sci U S A 2015; 112:E2602-10. [PMID: 25926659 DOI: 10.1073/pnas.1505543112] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
In eukaryotes, receptor tyrosine kinases (RTKs) and trimeric G proteins are two major signaling hubs. Signal transduction via trimeric G proteins has long been believed to be triggered exclusively by G protein-coupled receptors (GPCRs). This paradigm has recently been challenged by several studies on a multimodular signal transducer, Gα-Interacting Vesicle associated protein (GIV/Girdin). We recently demonstrated that GIV's C terminus (CT) serves as a platform for dynamic association of ligand-activated RTKs with Gαi, and for noncanonical transactivation of G proteins. However, exogenous manipulation of this platform has remained beyond reach. Here we developed cell-permeable GIV-CT peptides by fusing a TAT-peptide transduction domain (TAT-PTD) to the minimal modular elements of GIV that are necessary and sufficient for activation of Gi downstream of RTKs, and used them to engineer signaling networks and alter cell behavior. In the presence of an intact GEF motif, TAT-GIV-CT peptides enhanced diverse processes in which GIV's GEF function has previously been implicated, e.g., 2D cell migration after scratch-wounding, invasion of cancer cells, and finally, myofibroblast activation and collagen production. Furthermore, topical application of TAT-GIV-CT peptides enhanced the complex, multireceptor-driven process of wound repair in mice in a GEF-dependent manner. Thus, TAT-GIV peptides provide a novel and versatile tool to manipulate Gαi activation downstream of growth factors in a diverse array of pathophysiologic conditions.
Collapse
|
37
|
Midde KK, Aznar N, Laederich MB, Ma GS, Kunkel MT, Newton AC, Ghosh P. Multimodular biosensors reveal a novel platform for activation of G proteins by growth factor receptors. Proc Natl Acad Sci U S A 2015; 112:E937-46. [PMID: 25713130 PMCID: PMC4352799 DOI: 10.1073/pnas.1420140112] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Environmental cues are transmitted to the interior of the cell via a complex network of signaling hubs. Receptor tyrosine kinases (RTKs) and trimeric G proteins are two such major signaling hubs in eukaryotes. Conventionally, canonical signal transduction via trimeric G proteins is thought to be triggered exclusively by G protein-coupled receptors. Here we used molecular engineering to develop modular fluorescent biosensors that exploit the remarkable specificity of bimolecular recognition, i.e., of both G proteins and RTKs, and reveal the workings of a novel platform for activation of G proteins by RTKs in single living cells. Comprised of the unique modular makeup of guanidine exchange factor Gα-interacting vesicle-associated protein (GIV)/girdin, a guanidine exchange factor that links G proteins to a variety of RTKs, these biosensors provide direct evidence that RTK-GIV-Gαi ternary complexes are formed in living cells and that Gαi is transactivated within minutes after growth factor stimulation at the plasma membrane. Thus, GIV-derived biosensors provide a versatile strategy for visualizing, monitoring, and manipulating the dynamic association of Gαi with RTKs for noncanonical transactivation of G proteins in cells and illuminate a fundamental signaling event regulated by GIV during diverse cellular processes and pathophysiologic states.
Collapse
Affiliation(s)
| | | | | | | | | | | | - Pradipta Ghosh
- Departments of Medicine and Pharmacology and Moores Cancer Center, University of California, San Diego, La Jolla, CA 92093
| |
Collapse
|
38
|
Garcia-Marcos M, Ghosh P, Farquhar MG. GIV/Girdin transmits signals from multiple receptors by triggering trimeric G protein activation. J Biol Chem 2015; 290:6697-704. [PMID: 25605737 DOI: 10.1074/jbc.r114.613414] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Activation of trimeric G proteins has been traditionally viewed as the exclusive job of G protein-coupled receptors (GPCRs). This view has been challenged by the discovery of non-receptor activators of trimeric G proteins. Among them, GIV (a.k.a. Girdin) is the first for which a guanine nucleotide exchange factor (GEF) activity has been unequivocally associated with a well defined motif. Here we discuss how GIV assembles alternative signaling pathways by sensing cues from various classes of surface receptors and relaying them via G protein activation. We also describe the dysregulation of this mechanism in disease and how its targeting holds promise for novel therapeutics.
Collapse
Affiliation(s)
- Mikel Garcia-Marcos
- From the Department of Biochemistry, Boston University School of Medicine, Boston, Massachusetts 02118 and
| | | | - Marilyn G Farquhar
- Cellular and Molecular Medicine, University of California, San Diego, La Jolla, California 92093-0651
| |
Collapse
|
39
|
Lin C, Ear J, Midde K, Lopez-Sanchez I, Aznar N, Garcia-Marcos M, Kufareva I, Abagyan R, Ghosh P. Structural basis for activation of trimeric Gi proteins by multiple growth factor receptors via GIV/Girdin. Mol Biol Cell 2014; 25:3654-71. [PMID: 25187647 PMCID: PMC4230624 DOI: 10.1091/mbc.e14-05-0978] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
GIV, a guanidine exchange factor for trimeric Gi, contains a unique domain that functions like a SH2 domain. GIV's SH2-like domain binds autophosphorylated RTKs. Binding of GIV's SH2 to RTKs enables the receptors to activate trimeric Gi. Inhibition of GIV:RTK interaction abolishes GIV-dependent Akt enhancement downstream of RTKs. A long-standing issue in the field of signal transduction is to understand the cross-talk between receptor tyrosine kinases (RTKs) and heterotrimeric G proteins, two major and distinct signaling hubs that control eukaryotic cell behavior. Although stimulation of many RTKs leads to activation of trimeric G proteins, the molecular mechanisms behind this phenomenon remain elusive. We discovered a unifying mechanism that allows GIV/Girdin, a bona fide metastasis-related protein and a guanine-nucleotide exchange factor (GEF) for Gαi, to serve as a direct platform for multiple RTKs to activate Gαi proteins. Using a combination of homology modeling, protein–protein interaction, and kinase assays, we demonstrate that a stretch of ∼110 amino acids within GIV C-terminus displays structural plasticity that allows folding into a SH2-like domain in the presence of phosphotyrosine ligands. Using protein–protein interaction assays, we demonstrated that both SH2 and GEF domains of GIV are required for the formation of a ligand-activated ternary complex between GIV, Gαi, and growth factor receptors and for activation of Gαi after growth factor stimulation. Expression of a SH2-deficient GIV mutant (Arg 1745→Leu) that cannot bind RTKs impaired all previously demonstrated functions of GIV—Akt enhancement, actin remodeling, and cell migration. The mechanistic and structural insights gained here shed light on the long-standing questions surrounding RTK/G protein cross-talk, set a novel paradigm, and characterize a unique pharmacological target for uncoupling GIV-dependent signaling downstream of multiple oncogenic RTKs.
Collapse
Affiliation(s)
- Changsheng Lin
- Department of Medicine, University of California, San Diego, School of Medicine, CA 92093
| | - Jason Ear
- Department of Medicine, University of California, San Diego, School of Medicine, CA 92093
| | - Krishna Midde
- Department of Medicine, University of California, San Diego, School of Medicine, CA 92093
| | | | - Nicolas Aznar
- Department of Medicine, University of California, San Diego, School of Medicine, CA 92093
| | - Mikel Garcia-Marcos
- Department of Cellular and Molecular Medicine, University of California, San Diego, School of Medicine, CA 92093
| | - Irina Kufareva
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, La Jolla, CA 92093
| | - Ruben Abagyan
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, La Jolla, CA 92093
| | - Pradipta Ghosh
- Department of Medicine, University of California, San Diego, School of Medicine, CA 92093
| |
Collapse
|
40
|
Role of Girdin in intimal hyperplasia in vein grafts and efficacy of atelocollagen-mediated application of small interfering RNA for vein graft failure. J Vasc Surg 2014; 60:479-489.e5. [DOI: 10.1016/j.jvs.2013.06.080] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2013] [Revised: 06/19/2013] [Accepted: 06/29/2013] [Indexed: 12/14/2022]
|
41
|
Cao K, Jiang W, Cao P, Zou Q, Xiao S, Zhou J, Huang C. Talen-mediated girdin knockout downregulates cell proliferation, migration and invasion in human esophageal carcinoma ECA109 cells. Mol Med Rep 2014; 10:848-54. [PMID: 24865549 DOI: 10.3892/mmr.2014.2268] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2013] [Accepted: 04/15/2014] [Indexed: 11/06/2022] Open
Abstract
Girdin is an actin-binding Akt substrate that is involved in the regulation of cell migration. Accumulating evidence has revealed that girdin has regulatory effects on invasion and metastasis in several types of cancer. However, the role of girdin in esophageal squamous cell carcinomas (ESCCs) is yet to be investigated. In the present study, tissue microarray data revealed that among 95 cases of ESCC, 27 cases (28.7%) exhibited a low expression of girdin, while 67 cases (71.3%) had an enhanced expression of girdin. However, among 78 cases of adjacent tissues, 64 cases (82.1%) did not express girdin and 14 cases (17.9%) exhibited a low expression of girdin. Furthermore, the expression of girdin was significantly associated with the tumor stage, lymph node metastasis stage, and tumor, lymph node and metastasis stage. Of note, the mean survival time of girdin-positive cases was only 30.62±2.99 months, while it was 53.37±5.02 months in girdin-negative cases, indicating that girdin protein expression is an independent prognostic factor of poor survival. Talen-mediated girdin knockout (KO) significantly suppressed cellular proliferation, migration and invasion in ESCC ECA109 cells. In conclusion, the present study suggested that girdin protein expression was significantly correlated with cancer progression and poor prognosis in ESCCs, and that girdin had a positive role in the regulation of cell proliferation, migration and invasion in ESCC cells. Therefore, girdin may be a potential candidate for the development of novel prognostic tools and therapeutic strategies for ESCCs.
Collapse
Affiliation(s)
- Ke Cao
- Department of Oncology, The Third Xiangya Hospital, Central South University, Changsha, Hunan, 410013, P.R. China
| | - Wenting Jiang
- Department of Oncology, The Third Xiangya Hospital, Central South University, Changsha, Hunan, 410013, P.R. China
| | - Peiguo Cao
- Department of Oncology, The Third Xiangya Hospital, Central South University, Changsha, Hunan, 410013, P.R. China
| | - Qiong Zou
- Department of Pathology, The Third Xiangya Hospital, Central South University, Changsha, Hunan, 410013, P.R. China
| | - Sheng Xiao
- Department of Pathology, The Third Xiangya Hospital, Central South University, Changsha, Hunan, 410013, P.R. China
| | - Jianda Zhou
- Department of Plastic Surgery, The Third Xiangya Hospital, Central South University, Changsha, Hunan, 410013, P.R. China
| | - Chenghui Huang
- Department of Oncology, The Third Xiangya Hospital, Central South University, Changsha, Hunan, 410013, P.R. China
| |
Collapse
|
42
|
Peng WT, Hu X, Yao L, Jiang YZ, Shao ZM. Elevated Expression of Girdin in the Nucleus Indicates Worse Prognosis for Patients with Estrogen Receptor-Positive Breast Cancer. Ann Surg Oncol 2014; 21 Suppl 4:S648-56. [DOI: 10.1245/s10434-014-3746-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2013] [Indexed: 02/01/2023]
|
43
|
Miyabe M, Ohashi K, Shibata R, Uemura Y, Ogura Y, Yuasa D, Kambara T, Kataoka Y, Yamamoto T, Matsuo K, Joki Y, Enomoto T, Hayakawa S, Hiramatsu-Ito M, Ito M, Van Den Hoff MJB, Walsh K, Murohara T, Ouchi N. Muscle-derived follistatin-like 1 functions to reduce neointimal formation after vascular injury. Cardiovasc Res 2014; 103:111-20. [PMID: 24743592 DOI: 10.1093/cvr/cvu105] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
AIMS It is well-established that exercise diminishes cardiovascular risk, but whether humoral factors secreted by muscle confer these benefits has not been conclusively shown. We have shown that the secreted protein follistatin-like 1 (Fstl1) has beneficial actions on cardiac and endothelial function. However, the role of muscle-derived Fstl1 in proliferative vascular disease remains largely unknown. Here, we investigated whether muscle-derived Fstl1 modulates vascular remodelling in response to injury. METHODS AND RESULTS The targeted ablation of Fstl1 in muscle led to an increase in neointimal formation following wire-induced arterial injury compared with control mice. Conversely, muscle-specific Fstl1 transgenic (TG) mice displayed a decrease in the neointimal thickening following arterial injury. Muscle-specific Fstl1 ablation and overexpression increased and decreased, respectively, the frequency of BrdU-positive proliferating cells in injured vessels. In cultured human aortic smooth muscle cells (HASMCs), treatment with human FSTL1 protein decreased proliferation and migration induced by stimulation with PDGF-BB. Treatment with FSTL1 enhanced AMPK phosphorylation, and inhibition of AMPK abrogated the inhibitory actions of FSTL1 on HASMC responses to PDGF-BB. The injured arteries of Fstl1-TG mice exhibited an increase in AMPK phosphorylation, and administration of AMPK inhibitor reversed the anti-proliferative actions of Fstl1 on the vessel wall. CONCLUSION Our findings indicate that muscle-derived Fstl1 attenuates neointimal formation in response to arterial injury by suppressing SMC proliferation through an AMPK-dependent mechanism. Thus, the release of protein factors from muscle, such as Fstl1, may partly explain why the maintenance of muscle function can have a therapeutic effect on the cardiovascular system.
Collapse
Affiliation(s)
- Megumi Miyabe
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Koji Ohashi
- Department of Molecular Cardiology, Nagoya University Graduate School of Medicine, 65 Tsurumaicho, Showa-ku, Nagoya 466-8550, Japan
| | - Rei Shibata
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yusuke Uemura
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yasuhiro Ogura
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Daisuke Yuasa
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Takahiro Kambara
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yoshiyuki Kataoka
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Takashi Yamamoto
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Kazuhiro Matsuo
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yusuke Joki
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Takashi Enomoto
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Satoko Hayakawa
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Mizuho Hiramatsu-Ito
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Masanori Ito
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Maurice J B Van Den Hoff
- Department of Anatomy, Embryology & Physiology, Heart Failure Research Center, Academic Medical Center, Amsterdam, Netherlands
| | - Kenneth Walsh
- Department of Molecular Cardiology, Boston University School of Medicine, Boston, MA, USA
| | - Toyoaki Murohara
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Noriyuki Ouchi
- Department of Molecular Cardiology, Nagoya University Graduate School of Medicine, 65 Tsurumaicho, Showa-ku, Nagoya 466-8550, Japan
| |
Collapse
|
44
|
Sugumaran PK, Wang S, Song S, Nie X, Zhang L, Feng Y, Ma W, Zhu D. 15-oxo-Eicosatetraenoic acid prevents serum deprivation-induced apoptosis of pulmonary arterial smooth muscle cells by activating pro-survival pathway. Prostaglandins Leukot Essent Fatty Acids 2014; 90:89-98. [PMID: 24534136 DOI: 10.1016/j.plefa.2014.01.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/06/2013] [Revised: 01/25/2014] [Accepted: 01/27/2014] [Indexed: 12/13/2022]
Abstract
Pulmonary arterial hypertension (PAH) is a progressive condition in which remodeling of the pulmonary vasculature plays an important role. The vascular remodeling involves pulmonary arterial smooth muscle cell (PASMC) proliferation and apoptosis, which is affected by several arachidonic acid metabolites. 15-oxo-Eicosatetraenoic acid (15-oxo-ETE) is one of the metabolites. However, the biological role of 15-oxo-ETE in PASMCs remains unknown. Here we show evidence for the modulation of PASMC apoptosis by 15-oxo-ETE. We found that 15-oxo-ETE increased rat and human PASMC viability. Consistently, 15-oxo-ETE attenuated nuclear fragmentation and DNA strand breaks, decreased caspase-3 activity, reduced mitochondrial depolarization, and increased Bcl-2 expression. Interestingly, the anti-apoptotic effect of 15-oxo-ETE was lost when the Akt intracellular signaling pathway was blocked. Taken together, we have established that 15-oxo-ETE protects PASMCs against apoptosis through the Akt pathway. These results suggest that 15-oxo-ETE seems to be a potential agent for PAH controls by preventing unwanted PASMC death.
Collapse
Affiliation(s)
- Praveen Kumar Sugumaran
- Department of Biopharmaceutical Sciences, College of Pharmacy, Harbin Medical University, Nangang District, Harbin, Heilongjiang 150081, PR China
| | - Shuang Wang
- Department of Biopharmaceutical Sciences, College of Pharmacy, Harbin Medical University, Nangang District, Harbin, Heilongjiang 150081, PR China
| | - Shasha Song
- Department of Biopharmaceutical Sciences, College of Pharmacy, Harbin Medical University, Nangang District, Harbin, Heilongjiang 150081, PR China
| | - Xiaowei Nie
- Department of Biopharmaceutical Sciences, College of Pharmacy, Harbin Medical University, Nangang District, Harbin, Heilongjiang 150081, PR China
| | - Lei Zhang
- Department of Biopharmaceutical Sciences, College of Pharmacy, Harbin Medical University, Nangang District, Harbin, Heilongjiang 150081, PR China
| | - Ye Feng
- Department of Biopharmaceutical Sciences, College of Pharmacy, Harbin Medical University, Nangang District, Harbin, Heilongjiang 150081, PR China
| | - Wenchao Ma
- Department of Biopharmaceutical Sciences, College of Pharmacy, Harbin Medical University, Nangang District, Harbin, Heilongjiang 150081, PR China
| | - Daling Zhu
- Department of Biopharmaceutical Sciences, College of Pharmacy, Harbin Medical University, Nangang District, Harbin, Heilongjiang 150081, PR China; Biopharmaceutical Key Laboratory of Heilongjiang Province, 157 Baojian Road, Harbin, Heilongjiang 150081, PR China; Department of Biopharmaceutical Sciences, College of Pharmacy, Harbin Medical University-Daqing, Daqing, Heilongjiang province 163319, PR China.
| |
Collapse
|
45
|
Jiang D, Li D, Cao L, Wang L, Zhu S, Xu T, Wang C, Pan D. Positive feedback regulation of proliferation in vascular smooth muscle cells stimulated by lipopolysaccharide is mediated through the TLR 4/Rac1/Akt pathway. PLoS One 2014; 9:e92398. [PMID: 24667766 PMCID: PMC3965409 DOI: 10.1371/journal.pone.0092398] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2013] [Accepted: 02/22/2014] [Indexed: 12/21/2022] Open
Abstract
Toll-like receptor 4 (TLR4) are important in inflammation and regulating vascular smooth muscle cells (VSMCs) proliferation, which are related to atherosclerosis and restenosis. We have investigated the mechanisms involved in Lipopolysaccharide (LPS)-induced proliferation of VSMCs. Stimulation of rat aortic VSMCs with LPS significantly increases the proliferation of VSMCs. This effect is regulated by Rac1 (Ras-related C3 botulinum toxin substrate l), which mediates the activation of phosphatidylinositol 3-kinase/Akt (PI3K/Akt) signaling pathways. Inhibition of Rac1 activity by NSC23766 is associated with inhibition of Akt activity. Treatment with NSC23766 or LY294002 significantly decreases LPS-induced TLR4 protein and mRNA expression. The data show that positive feedback regulation of proliferation in VSMCs is mediated through the TLR4/Rac1/Akt pathway.
Collapse
MESH Headings
- Animals
- Aorta/cytology
- Aorta/drug effects
- Aorta/metabolism
- Blotting, Western
- Cell Proliferation/drug effects
- Cells, Cultured
- Female
- Immunoprecipitation
- Lipopolysaccharides/pharmacology
- Male
- Muscle, Smooth, Vascular/cytology
- Muscle, Smooth, Vascular/drug effects
- Muscle, Smooth, Vascular/metabolism
- Phosphatidylinositol 3-Kinases/metabolism
- Proto-Oncogene Proteins c-akt/metabolism
- RNA, Messenger/genetics
- Rats
- Rats, Sprague-Dawley
- Real-Time Polymerase Chain Reaction
- Reverse Transcriptase Polymerase Chain Reaction
- Signal Transduction/drug effects
- Toll-Like Receptor 4/genetics
- Toll-Like Receptor 4/metabolism
- rac1 GTP-Binding Protein/metabolism
Collapse
Affiliation(s)
- Dehua Jiang
- Institute of Cardiovascular Disease Research, Xuzhou Medical College, Xuzhou, Jiangsu, China
| | - Dongye Li
- Institute of Cardiovascular Disease Research, Xuzhou Medical College, Xuzhou, Jiangsu, China
- Affiliated Hospital of Xuzhou Medical College, Xuzhou, Jiangsu, China
- * E-mail: (DL); (CW)
| | - Lijuan Cao
- Institute of Cardiovascular Disease Research, Xuzhou Medical College, Xuzhou, Jiangsu, China
| | - Lele Wang
- Institute of Cardiovascular Disease Research, Xuzhou Medical College, Xuzhou, Jiangsu, China
| | - Shasha Zhu
- Institute of Cardiovascular Disease Research, Xuzhou Medical College, Xuzhou, Jiangsu, China
| | - Tongda Xu
- Affiliated Hospital of Xuzhou Medical College, Xuzhou, Jiangsu, China
| | - Cheng Wang
- Affiliated Hospital of Xuzhou Medical College, Xuzhou, Jiangsu, China
- * E-mail: (DL); (CW)
| | - Defeng Pan
- Affiliated Hospital of Xuzhou Medical College, Xuzhou, Jiangsu, China
| |
Collapse
|
46
|
Loss of Dlg5 expression promotes the migration and invasion of prostate cancer cells via Girdin phosphorylation. Oncogene 2014; 34:1141-9. [DOI: 10.1038/onc.2014.31] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2013] [Revised: 12/11/2013] [Accepted: 12/24/2013] [Indexed: 01/18/2023]
|
47
|
|
48
|
Yamamoto T, Shibata R, Ishii M, Kanemura N, Kito T, Suzuki H, Miyake H, Maeda K, Tanigawa T, Ouchi N, Murohara T. Therapeutic reendothelialization by induced pluripotent stem cells after vascular injury--brief report. Arterioscler Thromb Vasc Biol 2013; 33:2218-21. [PMID: 23868941 DOI: 10.1161/atvbaha.113.301313] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVE Endothelial damage is an early requisite step for atherosclerosis after vascular injury. It has been reported that vascular wall cells can develop from induced pluripotent stem (iPS) cell-derived fetal liver kinase-1-positive (Flk-1(+)) cells. Here, we investigated the efficacies of intravenously administered iPS cell-derived Flk-1(+) cells on reendothelialization and neointimal hyperplasia in a mouse model of vascular injury. APPROACH AND RESULTS Femoral arteries of KSN nude mice were injured using a steel wire. Mouse iPS cell-derived Flk-1(+) or Flk-1(-) cells were intravenously injected into those mice at 24 hours after vascular injury. Delivery of iPS cell-derived Flk-1(+) cells significantly attenuated neointimal hyperplasia compared with controls. Evans blue staining of the injured vessel revealed that administration of iPS cell-derived Flk-1(+) significantly enhanced reendothelialization compared with the Flk-1(-) cell control group. Recruitment of PKH26-labeled iPS cell-derived Flk-1(+) cells to the site of injury was also detectable. Expression level of CXCR4 in iPS cell-derived Flk-1(+) cells was 7.5-fold higher than that of iPS cell-derived Flk-1(-) cells. Stromal cell-derived factor-1α treatment significantly enhanced adhesion and migration of iPS cell-derived Flk-1(+) cells to the endothelia, but these were not observed in Flk-1(-) cells. CONCLUSIONS Intravenously administered iPS cell-derived Flk-1(+) cells are recruited to the site of vascular injury, thereby enhancing reendothelialization followed by suppression of neointimal hyperplasia. Administration of iPS cell-derived Flk-1(+) cells is a potentially useful therapeutic means for vascular dysfunction and prevention of restenosis after angioplasty.
Collapse
Affiliation(s)
- Takashi Yamamoto
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
49
|
Chen J, Crawford R, Chen C, Xiao Y. The key regulatory roles of the PI3K/Akt signaling pathway in the functionalities of mesenchymal stem cells and applications in tissue regeneration. TISSUE ENGINEERING PART B-REVIEWS 2013; 19:516-28. [PMID: 23651329 DOI: 10.1089/ten.teb.2012.0672] [Citation(s) in RCA: 166] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Mesenchymal stem cells (MSCs) are multipotent cells that can differentiate into various cell types and have been widely used in tissue engineering application. In tissue engineering, a scaffold, MSCs and growth factors are used as essential components and their interactions have been regarded to be important for regeneration of tissues. A critical problem for MSCs in tissue engineering is their low survival ability and functionality. Most MSCs are going to be apoptotic after transplantation. Therefore, increasing MSC survival ability and functionalities is the key for potential applications of MSCs. Several approaches have been studied to increase MSC tissue forming capacity including application of growth factors, overexpression of stem cell regulatory genes, and improvement of biomaterials for scaffolds. The effects of these approaches on MSCs have been associated with activation of the phosphoinositide 3-kinase (PI3K)/Akt signaling pathway. The pathway plays central regulatory roles in MSC survival, proliferation, migration, angiogenesis, cytokine production, and differentiation. In this review, we summarize and discuss the literatures related to the roles of the PI3K/Akt pathway in the functionalities of MSCs and the involvement of the pathway in biomaterials-increased MSC functionalities. Biomaterials have been modified in their properties and surface structure and loaded with growth factors to increase MSC functionalities. Several studies demonstrated that the biomaterials-increased MSC functionalities are mediated by the activation of the PI3K/Akt pathway.
Collapse
Affiliation(s)
- Jiezhong Chen
- 1 Institute of Health and Biomedical Innovation, Queensland University of Technology , Brisbane, Australia
| | | | | | | |
Collapse
|
50
|
Girdin and Its Phosphorylation Dynamically Regulate Neonatal Vascular Development and Pathological Neovascularization in the Retina. THE AMERICAN JOURNAL OF PATHOLOGY 2013. [DOI: 10.1016/j.ajpath.2012.10.012] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
|