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Hu X, Ding H, Wei Q, Chen R, Zhao W, Jiang L, Wang J, Liu H, Cao J, Liu H, Wang B. Fibroblast growth factor 21 predicts arteriovenous fistula functional patency loss and mortality in patients undergoing maintenance hemodialysis. Ren Fail 2024; 46:2302407. [PMID: 38197433 PMCID: PMC10783836 DOI: 10.1080/0886022x.2024.2302407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Accepted: 01/02/2024] [Indexed: 01/11/2024] Open
Abstract
BACKGROUND Arteriovenous fistula (AVF) dysfunction is a common complication in patients undergoing maintenance hemodialysis (MHD). Elevated serum levels of fibroblast growth factor 21 (FGF21) are associated with atherosclerosis and cardiovascular mortality. However, its association with vascular access outcomes remains elusive. The present study evaluated the relationship of serum FGF21 levels with AVF dysfunction and all-cause mortality in patients undergoing MHD. METHODS We included patients undergoing MHD using AVF from January 2018 to December 2019. FGF21 concentration was detected using enzyme-linked immunosorbent assay. Patients were followed up to record two clinical outcomes, AVF functional patency loss and all-cause mortality. The follow-up period ended on April 30, 2022. RESULTS Among 147 patients, the mean age was 58.49 ± 14.41 years, and the median serum level of FGF21 was 150.15 (70.57-318.01) pg/mL. During the median follow-up period of 40.83 months, the serum level of FGF21 was an independent risk factor for AVF functional patency loss (per 1 pg/mL increase, HR 1.002 [95% CI: 1.001-1.003, p = 0.003]). Patients with higher serum levels of FGF21 were more likely to suffer from all-cause mortality (per 1 pg/mL increase, HR 1.002 [95% CI: 1.000-1.003, p = 0.014]). The optimal cutoffs for FGF21 to predict AVF functional patency loss and all-cause mortality in patients undergoing MHD were 149.98 pg/mL and 146.43 pg/mL, with AUCs of 0.701 (95% CI: 0.606-0.796, p < 0.001) and 0.677 (95% CI: 0.595-0.752, p = 0.002), respectively. CONCLUSIONS Serum FGF21 levels were an independent risk factor and predictor for AVF functional patency loss and all-cause mortality in patients undergoing MHD.
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Affiliation(s)
- Xinhui Hu
- Institute of Nephrology, Zhong da Hospital, Southeast University School of Medicine, Nanjing, Jiangsu Province, China
| | - Hong Ding
- Institute of Nephrology, People’s Hospital of Yangzhong city, Zhenjiang, Jiangsu Province, China
| | - Qing Wei
- Institute of Nephrology, Zhong da Hospital, Southeast University School of Medicine, Nanjing, Jiangsu Province, China
| | - Ruoxin Chen
- Institute of Nephrology, Zhong da Hospital, Southeast University School of Medicine, Nanjing, Jiangsu Province, China
| | - Weiting Zhao
- Institute of Nephrology, Zhong da Hospital, Southeast University School of Medicine, Nanjing, Jiangsu Province, China
| | - Liqiong Jiang
- Institute of Nephrology, the Affiliated Suzhou Hospital of the Nanjing Medical University, Suzhou, Jiangsu Province, China
| | - Jing Wang
- Institute of Nephrology, Zhong da Hospital, Southeast University School of Medicine, Nanjing, Jiangsu Province, China
| | - Haifei Liu
- Institute of Nephrology, Zhong da Hospital, Southeast University School of Medicine, Nanjing, Jiangsu Province, China
| | - Jingyuan Cao
- Institute of Nephrology, the Affiliated Taizhou People’s Hospital of Nanjing Medical University, Taizhou School of Clinical Medicine, Nanjing Medical University, Taizhou, Jiangsu, China
| | - Hong Liu
- Institute of Nephrology, Zhong da Hospital, Southeast University School of Medicine, Nanjing, Jiangsu Province, China
| | - Bin Wang
- Institute of Nephrology, Zhong da Hospital, Southeast University School of Medicine, Nanjing, Jiangsu Province, China
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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.
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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.
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Lin WT, Jiang YC, Mei YL, Chen YH, Zheng ZZ, Han X, Wu GJ, Huang WJ, Ye BZ, Liang G. Endothelial deubiquinatase YOD1 mediates Ang II-induced vascular endothelial-mesenchymal transition and remodeling by regulating β-catenin. Acta Pharmacol Sin 2024:10.1038/s41401-024-01278-9. [PMID: 38641745 DOI: 10.1038/s41401-024-01278-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Accepted: 03/25/2024] [Indexed: 04/21/2024] Open
Abstract
Hypertension is a prominent contributor to vascular injury. Deubiquinatase has been implicated in the regulation of hypertension-induced vascular injury. In the present study we investigated the specific role of deubiquinatase YOD1 in hypertension-induced vascular injury. Vascular endothelial endothelial-mesenchymal transition (EndMT) was induced in male WT and YOD1-/- mice by administration of Ang II (1 μg/kg per minute) via osmotic pump for four weeks. We showed a significantly increased expression of YOD1 in mouse vascular endothelial cells upon Ang II stimulation. Knockout of YOD1 resulted in a notable reduction in EndMT in vascular endothelial cells of Ang II-treated mouse; a similar result was observed in Ang II-treated human umbilical vein endothelial cells (HUVECs). We then conducted LC-MS/MS and co-immunoprecipitation (Co-IP) analyses to verify the binding between YOD1 and EndMT-related proteins, and found that YOD1 directly bound to β-catenin in HUVECs via its ovarian tumor-associated protease (OTU) domain, and histidine at 262 performing deubiquitination to maintain β-catenin protein stability by removing the K48 ubiquitin chain from β-catenin and preventing its proteasome degradation, thereby promoting EndMT of vascular endothelial cells. Oral administration of β-catenin inhibitor MSAB (20 mg/kg, every other day for four weeks) eliminated the protective effect of YOD1 deletion on vascular endothelial injury. In conclusion, we demonstrate a new YOD1-β-catenin axis in regulating Ang II-induced vascular endothelial injury and reveal YOD1 as a deubiquitinating enzyme for β-catenin, suggesting that targeting YOD1 holds promise as a potential therapeutic strategy for treating β-catenin-mediated vascular diseases.
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Affiliation(s)
- Wan-Te Lin
- Department of Cardiology and the Key Laboratory of Cardiovascular Disease of Wenzhou, the First Affiliated Hospital, Wenzhou Medical University, Wenzhou, 325035, China
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China
| | - Yu-Cheng Jiang
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China
| | - Yi-Lin Mei
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China
| | - Yang-Hao Chen
- Department of Cardiology and the Key Laboratory of Cardiovascular Disease of Wenzhou, the First Affiliated Hospital, Wenzhou Medical University, Wenzhou, 325035, China
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China
| | - Zhao-Zheng Zheng
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China
| | - Xue Han
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China
| | - Gao-Jun Wu
- Department of Cardiology and the Key Laboratory of Cardiovascular Disease of Wenzhou, the First Affiliated Hospital, Wenzhou Medical University, Wenzhou, 325035, China
| | - Wei-Jian Huang
- Department of Cardiology and the Key Laboratory of Cardiovascular Disease of Wenzhou, the First Affiliated Hospital, Wenzhou Medical University, Wenzhou, 325035, China.
| | - Bo-Zhi Ye
- Department of Cardiology and the Key Laboratory of Cardiovascular Disease of Wenzhou, the First Affiliated Hospital, Wenzhou Medical University, Wenzhou, 325035, China.
- School of Pharmaceutical Sciences, Hangzhou Medical College, Hangzhou, 325035, China.
| | - Guang Liang
- Department of Cardiology and the Key Laboratory of Cardiovascular Disease of Wenzhou, the First Affiliated Hospital, Wenzhou Medical University, Wenzhou, 325035, China.
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China.
- School of Pharmaceutical Sciences, Hangzhou Medical College, Hangzhou, 325035, China.
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Li Y, Wu Y, Qin X, Gu J, Liu A, Cao J. Constructing a competitive endogenous RNA network of EndMT-related atherosclerosis through weighted gene co-expression network analysis. Front Cardiovasc Med 2024; 10:1322252. [PMID: 38268851 PMCID: PMC10806165 DOI: 10.3389/fcvm.2023.1322252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Accepted: 12/27/2023] [Indexed: 01/26/2024] Open
Abstract
Atherosclerosis is a chronic inflammatory disease characterized by endothelial dysfunction and plaque formation. Under pro-inflammatory conditions, endothelial cells can undergo endothelial-to-mesenchymal transition (EndMT), contributing to atherosclerosis development. However, the specific regulatory mechanisms by which EndMT contributes to atherosclerosis remain unclear and require further investigation. Dan-Shen-Yin (DSY), a traditional Chinese herbal formula, is commonly used for cardiovascular diseases, but its molecular mechanisms remain elusive. Emerging evidence indicates that competing endogenous RNA (ceRNA) networks play critical roles in atherosclerosis pathogenesis. In this study, we constructed an EndMT-associated ceRNA network during atherosclerosis progression by integrating gene expression profiles from the Gene Expression Omnibus (GEO) database and weighted gene co-expression network analysis. Functional enrichment analysis revealed this EndMT-related ceRNA network is predominantly involved in inflammatory responses. ROC curve analysis showed the identified hub genes can effectively distinguish between normal vasculature and atherosclerotic lesions. Furthermore, Kaplan-Meier analysis demonstrated that high expression of IL1B significantly predicts ischemic events in atherosclerosis. Molecular docking revealed most DSY bioactive components can bind key EndMT-related lncRNAs, including AC003092.1, MIR181A1HG, MIR155HG, WEE2-AS1, and MIR137HG, suggesting DSY may mitigate EndMT in atherosclerosis by modulating the ceRNA network.
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Affiliation(s)
- Yawei Li
- Research Center of Basic Integrative Medicine, School of Basic Medical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Yubiao Wu
- Research Center of Basic Integrative Medicine, School of Basic Medical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Xiude Qin
- Encephalopathy Department, Shenzhen Traditional Chinese Medicine Hospital, The Fourth Clinical Medical College of Guangzhou University of Chinese Medicine, Shenzhen, China
| | - Jinchao Gu
- Research Center of Basic Integrative Medicine, School of Basic Medical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Aijun Liu
- Research Center of Basic Integrative Medicine, School of Basic Medical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Jiahui Cao
- Research Center of Basic Integrative Medicine, School of Basic Medical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, China
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Lyu QR, Fu K. Tissue-specific Cre driver mice to study vascular diseases. Vascul Pharmacol 2023; 153:107241. [PMID: 37923099 DOI: 10.1016/j.vph.2023.107241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Revised: 10/27/2023] [Accepted: 10/30/2023] [Indexed: 11/07/2023]
Abstract
Vascular diseases, including atherosclerosis and abdominal aneurysms, are the primary cause of mortality and morbidity among the elderly worldwide. The life quality of patients is significantly compromised due to inadequate therapeutic approaches and limited drug targets. To expand our comprehension of vascular diseases, gene knockout (KO) mice, especially conditional knockout (cKO) mice, are widely used for investigating gene function and mechanisms of action. The Cre-loxP system is the most common method for generating cKO mice. Numerous Cre driver mice have been established to study the main cell types that compose blood vessels, including endothelial cells, smooth muscle cells, and fibroblasts. Here, we first discuss the characteristics of each layer of the arterial wall. Next, we provide an overview of the representative Cre driver mice utilized for each of the major cell types in the vessel wall and their most recent applications in vascular biology. We then go over Cre toxicity and discuss the practical methods for minimizing Cre interference in experimental outcomes. Finally, we look into the future of tissue-specific Cre drivers by introducing the revolutionary single-cell RNA sequencing and dual recombinase system.
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Affiliation(s)
- Qing Rex Lyu
- Medical Research Center, Chongqing General Hospital, Chongqing 401147, China; Chongqing Academy of Medical Sciences, Chongqing 401147, China.
| | - Kailong Fu
- Department of Traditional Chinese Medicine, Fujian Medical University Union Hospital, Fuzhou 350001, China.
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Di J, Chen Z, Wang Z, He T, Wu D, Weng C, Deng J, Mai L, Wang K, He L, Rong L. Cartilage tissue from sites of weight bearing in patients with osteoarthritis exhibits a differential phenotype with distinct chondrocytes subests. RMD Open 2023; 9:e003255. [PMID: 37848267 PMCID: PMC10582868 DOI: 10.1136/rmdopen-2023-003255] [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: 04/22/2023] [Accepted: 09/12/2023] [Indexed: 10/19/2023] Open
Abstract
OBJECTIVE Osteoarthritis (OA) is a degenerative joint disease associated with excessive mechanical loading. The aim here was to elucidate whether different subpopulations of chondrocytes exhibit distinct phenotypes in response to variations in loading conditions. Furthermore, we seek to investigate the transcriptional switches and cell crosstalk among these chondrocytes subsets. METHODS Proteomic analysis was performed on cartilage tissues isolated from weight-bearing and non-weight-bearing regions. Additionally, single-cell RNA sequencing was employed to identify different subsets of chondrocytes. For disease-specific cells, in vitro differentiation induction was performed, and their presence was confirmed in human cartilage tissue sections using immunofluorescence. The molecular mechanisms underlying transcriptional changes in these cells were analysed through whole-transcriptome sequencing. RESULTS In the weight-bearing regions of OA cartilage tissue, a subpopulation of chondrocytes called OA hypertrophic chondrocytes (OAHCs) expressing the marker genes SLC39A14 and COL10A1 are present. These cells exhibit unique characteristics of active cellular interactions mediated by the TGFβ signalling pathway and express OA phenotypes, distinct from hypertrophic chondrocytes in healthy cartilage. OAHCs are mainly distributed in the superficial region of damaged cartilage in human OA tissue, and on TGFβ stimulation, exhibit activation of transcriptional expression of iron metabolism-related genes, along with enrichment of associated pathways. CONCLUSION This study identified and validated the existence of a subset of OAHCs in the weight-bearing area of OA cartilage tissue. Our findings provide a theoretical basis for targeting OAHCs to slow down the progression of OA and facilitate the repair of cartilage injuries.
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Affiliation(s)
- Jiawei Di
- Department of Spine Surgery, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
- Guangdong Provincial Center for Engineering and Technology Research of Minimally Invasive Spine Surgery, Guangzhou, Guangdong, China
- Guangdong Provincial Center for Quality Control of Minimally Invasive Spine Surgery, Guangzhou, Guangdong, China
| | - Zihao Chen
- Department of Spine Surgery, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
- Guangdong Provincial Center for Engineering and Technology Research of Minimally Invasive Spine Surgery, Guangzhou, Guangdong, China
- Guangdong Provincial Center for Quality Control of Minimally Invasive Spine Surgery, Guangzhou, Guangdong, China
| | - Zhe Wang
- Department of Spine Surgery, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
- Guangdong Provincial Center for Engineering and Technology Research of Minimally Invasive Spine Surgery, Guangzhou, Guangdong, China
- Guangdong Provincial Center for Quality Control of Minimally Invasive Spine Surgery, Guangzhou, Guangdong, China
- Department of Joint Surgery, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Tianwei He
- Department of Spine Surgery, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
- Guangdong Provincial Center for Engineering and Technology Research of Minimally Invasive Spine Surgery, Guangzhou, Guangdong, China
- Guangdong Provincial Center for Quality Control of Minimally Invasive Spine Surgery, Guangzhou, Guangdong, China
| | - Depeng Wu
- Department of Spine Surgery, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
- Guangdong Provincial Center for Engineering and Technology Research of Minimally Invasive Spine Surgery, Guangzhou, Guangdong, China
- Guangdong Provincial Center for Quality Control of Minimally Invasive Spine Surgery, Guangzhou, Guangdong, China
| | - Chuanggui Weng
- Department of Spine Surgery, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
- Guangdong Provincial Center for Engineering and Technology Research of Minimally Invasive Spine Surgery, Guangzhou, Guangdong, China
- Guangdong Provincial Center for Quality Control of Minimally Invasive Spine Surgery, Guangzhou, Guangdong, China
| | - Jiajun Deng
- Department of Spine Surgery, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
- Guangdong Provincial Center for Engineering and Technology Research of Minimally Invasive Spine Surgery, Guangzhou, Guangdong, China
- Guangdong Provincial Center for Quality Control of Minimally Invasive Spine Surgery, Guangzhou, Guangdong, China
| | - Lang Mai
- Department of Spine Surgery, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
- Guangdong Provincial Center for Engineering and Technology Research of Minimally Invasive Spine Surgery, Guangzhou, Guangdong, China
- Guangdong Provincial Center for Quality Control of Minimally Invasive Spine Surgery, Guangzhou, Guangdong, China
| | - Kun Wang
- Department of Joint Surgery, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Lei He
- Department of Spine Surgery, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
- Guangdong Provincial Center for Engineering and Technology Research of Minimally Invasive Spine Surgery, Guangzhou, Guangdong, China
- Guangdong Provincial Center for Quality Control of Minimally Invasive Spine Surgery, Guangzhou, Guangdong, China
| | - Limin Rong
- Department of Spine Surgery, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
- Guangdong Provincial Center for Engineering and Technology Research of Minimally Invasive Spine Surgery, Guangzhou, Guangdong, China
- Guangdong Provincial Center for Quality Control of Minimally Invasive Spine Surgery, Guangzhou, Guangdong, China
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Chan YH, Tsai FC, Chang GJ, Lai YJ, Chang SH, Chen WJ, Yeh YH. CD44 regulates Epac1-mediated β-adrenergic-receptor-induced Ca 2+-handling abnormalities: implication in cardiac arrhythmias. J Biomed Sci 2023; 30:55. [PMID: 37452346 PMCID: PMC10347873 DOI: 10.1186/s12929-023-00944-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Accepted: 06/26/2023] [Indexed: 07/18/2023] Open
Abstract
BACKGROUND Sustained, chronic activation of β-adrenergic receptor (β-AR) signaling leads to cardiac arrhythmias, with exchange proteins directly activated by cAMP (Epac1 and Epac2) as key mediators. This study aimed to evaluate whether CD44, a transmembrane receptor mediating various cellular responses, participates in Epac-dependent arrhythmias. METHODS The heart tissue from CD44 knockout (CD44-/-) mice, cultured HL-1 myocytes and the tissue of human ventricle were used for western blot, co-immunoprecipitaiton and confocal studies. Line-scanning confocal imaging was used for the study of cellular Ca2+ sparks on myocytes. Optical mapping and intra-cardiac pacing were applied for arrhythmia studies on mice's hearts. RESULTS In mice, isoproterenol, a β-AR agonist, upregulated CD44 and Epac1 and increased the association between CD44 and Epac1. Isoproterenol upregulated the expression of phospho-CaMKII (p-CaMKII), phospho-ryanodine receptor (p-RyR), and phospho-phospholamban (p-PLN) in mice and cultured myocytes; these effects were attenuated in CD44-/- mice compared with wild-type controls. In vitro, isoproterenol, 8-CPT-cAMP (an Epac agonist), and osteopontin (a ligand of CD44) significantly upregulated the expression of p-CaMKII, p-RyR, and p-PLN; this effect was attenuated by CD44 small interfering RNA (siRNA). In myocytes, resting Ca2+ sparks were induced by isoproterenol and overexpressed CD44, which were prevented by inhibiting CD44. Ex vivo optical mapping and in vivo intra-cardiac pacing studies showed isoproterenol-induced triggered events and arrhythmias in ventricles were prevented in CD44-/- mice. The inducibility of ventricular arrhythmias (VAs) was attenuated in CD44-/- HF mice compared with wild-type HF controls. In patients, CD44 were upregulated, and the association between CD44 and Epac1 were increased in ventricles with reduced contractility. CONCLUSION CD44 regulates β-AR- and Epac1-mediated Ca2+-handling abnormalities and VAs. Inhibition of CD44 is effective in reducing VAs in HF, which is potentially a novel therapeutic target for preventing the arrhythmias and sudden cardiac death in patients with diseased hearts.
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Affiliation(s)
- Yi-Hsin Chan
- Cardiovascular Division, Chang-Gung Memorial Hospital, 5 Fu-Hsin Street, Guishan, Taoyuan, Taiwan
- School of Medicine, College of Medicine, Chang-Gung University, Taoyuan, Taiwan
- School of Traditional Chinese Medicine, College of Medicine, Chang-Gung University, Taoyuan, Taiwan
| | - Feng-Chun Tsai
- Division of Cardiovascular Surgery, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
| | - Gwo-Jyh Chang
- Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang-Gung University, Taoyuan, Taiwan
| | - Ying-Ju Lai
- Department of Respiratory Therapy, College of Medicine, Chang-Gung University, Taoyuan, Taiwan
| | - Shang-Hung Chang
- Cardiovascular Division, Chang-Gung Memorial Hospital, 5 Fu-Hsin Street, Guishan, Taoyuan, Taiwan
- School of Medicine, College of Medicine, Chang-Gung University, Taoyuan, Taiwan
| | - Wei-Jan Chen
- Cardiovascular Division, Chang-Gung Memorial Hospital, 5 Fu-Hsin Street, Guishan, Taoyuan, Taiwan
- School of Medicine, College of Medicine, Chang-Gung University, Taoyuan, Taiwan
| | - Yung-Hsin Yeh
- Cardiovascular Division, Chang-Gung Memorial Hospital, 5 Fu-Hsin Street, Guishan, Taoyuan, Taiwan.
- School of Medicine, College of Medicine, Chang-Gung University, Taoyuan, Taiwan.
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Du J, Song J, Ding L, Fan X, Lin L, Li A, Liang L, Kong X. Treatment with imatinib was useful to delay the neointimal hyperplasia of aortocaval fistula in adenine-induced renal failure rats. Biochem Biophys Res Commun 2023; 672:10-16. [PMID: 37331166 DOI: 10.1016/j.bbrc.2023.06.036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 05/26/2023] [Accepted: 06/10/2023] [Indexed: 06/20/2023]
Abstract
PURPOSE The study was conducted to investigate the effect of the treatment with imatinib, a c-kit specific inhibitor, on the neointimal hyperplasia (NIH) of aortocaval fistula (ACF) in adenine-induced renal failure rats. MATERIALS AND METHODS All rats were randomly assigned to 4 groups: rats were fed on a normal diet (normal group); rats were fed on a 0.75% adenine-rich diet (renal failure group). The remaining rats underwent ACF after receiving a 0.75% adenine-rich diet and received daily saline gavage (model group) or imatinib gavage (imatinib group) for 7 days after surgery. Immunohistochemical method was used to detect c-kit expression, and Elastomeric Verhoeff-Van Gieson (EVG) staining was used to observe morphological changes of the ACF. The Pearson correlation analysis was used to evaluate the correlations of c-kit expression with intimal thickness and the percentage of stenosis, respectively. RESULTS The renal failure group showed positive c-kit expression on the intima of the inferior vena cava (IVC), whereas the normal group did not. Compared to the model group, intimal thickness (P = 0.001), the percentage of stenosis (P = 0.006) and c-kit expression (P = 0.04) were decreased in the imatinib group at 8 weeks postoperatively. C-kit expression was positively correlated with both intimal thickness and percentage of stenosis (intimal thickness: R = 0.650, P = 0.003; the percentage of stenosis: R = 0.581, P = 0.011) in both the model and imatinib groups. CONCLUSION Treatment with imatinib, a c-kit specific inhibitor, was useful to delay the NIH of ACF in adenine-induced renal failure rats.
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Affiliation(s)
- Jing Du
- Department of Blood Purification Center, Weifang People's Hospital, Weifang, Shandong, China
| | - Jiguang Song
- Department of Blood Purification Center, Weifang People's Hospital, Weifang, Shandong, China
| | - Lina Ding
- Department of Blood Purification Center, Weifang People's Hospital, Weifang, Shandong, China
| | - Xiaoli Fan
- Department of Blood Purification Center, Weifang People's Hospital, Weifang, Shandong, China
| | - Lin Lin
- Department of Nephrology, Weifang People's Hospital, Weifang, Shandong, China
| | - Anzhuang Li
- Department of Nephrology, Shandong Provincial Qianfoshan Hospital, The First Affiliated Hospital of Shandong First Medical University, Jinan, Shandong, China; Nephrology Research Institute of Shandong Province, Jinan, Shandong, China
| | - Liming Liang
- Department of Nephrology, Shandong Provincial Qianfoshan Hospital, The First Affiliated Hospital of Shandong First Medical University, Jinan, Shandong, China; Nephrology Research Institute of Shandong Province, Jinan, Shandong, China.
| | - Xianglei Kong
- Department of Nephrology, Shandong Provincial Qianfoshan Hospital, The First Affiliated Hospital of Shandong First Medical University, Jinan, Shandong, China; Nephrology Research Institute of Shandong Province, Jinan, Shandong, China.
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Mamazhakypov A, Maripov A, Sarybaev AS, Schermuly RT, Sydykov A. Osteopontin in Pulmonary Hypertension. Biomedicines 2023; 11:biomedicines11051385. [PMID: 37239056 DOI: 10.3390/biomedicines11051385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 05/01/2023] [Accepted: 05/05/2023] [Indexed: 05/28/2023] Open
Abstract
Pulmonary hypertension (PH) is a pathological condition with multifactorial etiology, which is characterized by elevated pulmonary arterial pressure and pulmonary vascular remodeling. The underlying pathogenetic mechanisms remain poorly understood. Accumulating clinical evidence suggests that circulating osteopontin may serve as a biomarker of PH progression, severity, and prognosis, as well as an indicator of maladaptive right ventricular remodeling and dysfunction. Moreover, preclinical studies in rodent models have implicated osteopontin in PH pathogenesis. Osteopontin modulates a plethora of cellular processes within the pulmonary vasculature, including cell proliferation, migration, apoptosis, extracellular matrix synthesis, and inflammation via binding to various receptors such as integrins and CD44. In this article, we provide a comprehensive overview of the current understanding of osteopontin regulation and its impact on pulmonary vascular remodeling, as well as consider research issues required for the development of therapeutics targeting osteopontin as a potential strategy for the management of PH.
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Affiliation(s)
- Argen Mamazhakypov
- Department of Internal Medicine, Excellence Cluster Cardio-Pulmonary Institute (CPI), Member of the German Center for Lung Research (DZL), Justus Liebig University of Giessen, 35392 Giessen, Germany
| | - Abdirashit Maripov
- Department of Mountain and Sleep Medicine and Pulmonary Hypertension, National Center of Cardiology and Internal Medicine, Bishkek 720040, Kyrgyzstan
| | - Akpay S Sarybaev
- Department of Mountain and Sleep Medicine and Pulmonary Hypertension, National Center of Cardiology and Internal Medicine, Bishkek 720040, Kyrgyzstan
| | - Ralph Theo Schermuly
- Department of Internal Medicine, Excellence Cluster Cardio-Pulmonary Institute (CPI), Member of the German Center for Lung Research (DZL), Justus Liebig University of Giessen, 35392 Giessen, Germany
| | - Akylbek Sydykov
- Department of Internal Medicine, Excellence Cluster Cardio-Pulmonary Institute (CPI), Member of the German Center for Lung Research (DZL), Justus Liebig University of Giessen, 35392 Giessen, Germany
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