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Gong C, Chang L, Huang R, Sun X, Liu Y, Wu S, Wang L, Xu B, Wang L. LIM kinase 2 activates cardiac fibroblasts and exacerbates postinfarction left ventricular remodeling via crosstalk between the canonical and non-canonical Wnt pathways. Pharmacol Res 2024; 208:107347. [PMID: 39153710 DOI: 10.1016/j.phrs.2024.107347] [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: 04/16/2024] [Revised: 07/20/2024] [Accepted: 08/07/2024] [Indexed: 08/19/2024]
Abstract
Ischemic heart failure rates rise despite decreased acute myocardial infarction (MI) mortality. Excessive myofibroblast activation post-MI leads to adverse remodeling. LIM kinases (LIMK1 and LIMK2) regulate cytoskeleton homeostasis and are pro-fibrotic markers in atrial fibrillation. However, their roles and mechanisms in postinfarction fibrosis and ventricular remodeling remain unclear. This study found that the expression of LIMKs elevated in the border zone (BZ) in mice MI models. LIMK1/2 double knockout (DKO) restrained pathological remodeling and reduced mortality by suppressing myofibroblast activation. By using adeno-associated virus (AAV) with a periostin promoter to overexpress LIMK1 or LIMK2, this study found that myofibroblast-specific LIMK2 overexpression diminished these effects in DKO mice, while LIMK1 did not. LIMK2 kinase activity was critical for myofibroblast proliferation by using AAV overexpressing mutant LIMK2 lack of kinase activity. According to phosphoproteome analysis, functional rescue experiments, co-immunoprecipitation, and protein-protein docking, LIMK2 led to the phosphorylation of β-catenin at Ser 552. LIMK2 nuclear translocation also played a role in myofibroblast proliferation after MI with the help of AAV overexpressing mutant LIMK2 without nuclear location signal. Chromatin immunoprecipitation sequencing identified that LIMK2 bound to Lrp6 promoter region in TGF-β treated cardiac fibroblasts, positively regulating Wnt signaling via Wnt receptor internalization. This study demonstrated that LIMK2 promoted myofibroblast proliferation and adverse cardiac remodeling after MI, by enhancing phospho-β-catenin (Ser552) and Lrp6 signaling. This suggested that LIMK2 could be a target for the treatment of postinfarction injury.
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Affiliation(s)
- Chenyi Gong
- Department of Cardiology, Nanjing Drum Tower Hospital, State Key Laboratory of Pharmaceutical Biotechnology, the Affiliated Hospital of Nanjing University Medical School, No. 321 Zhongshan Road, Nanjing 210008, China; Department of Cardiology, the Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University, Suzhou 215002, China
| | - Lei Chang
- Department of Cardiology, Nanjing Drum Tower Hospital, Clinical College of Nanjing Medical University, Nanjing, Jiangsu 210008, China; Department of Cardiology, Dushu Lake Hospital Affiliated to Soochow University, Medical Center of Soochow University, Suzhou Dushu Lake Hospital, Suzhou 215000, China
| | - Rong Huang
- Department of Cardiology, Nanjing Drum Tower Hospital, State Key Laboratory of Pharmaceutical Biotechnology, the Affiliated Hospital of Nanjing University Medical School, No. 321 Zhongshan Road, Nanjing 210008, China
| | - Xuan Sun
- Department of Cardiology, Nanjing Drum Tower Hospital, State Key Laboratory of Pharmaceutical Biotechnology, the Affiliated Hospital of Nanjing University Medical School, No. 321 Zhongshan Road, Nanjing 210008, China
| | - Yihai Liu
- Department of Cardiology, Nanjing Drum Tower Hospital, State Key Laboratory of Pharmaceutical Biotechnology, the Affiliated Hospital of Nanjing University Medical School, No. 321 Zhongshan Road, Nanjing 210008, China
| | - Shaojun Wu
- Department of Cardiology, Nanjing Drum Tower Hospital, State Key Laboratory of Pharmaceutical Biotechnology, the Affiliated Hospital of Nanjing University Medical School, No. 321 Zhongshan Road, Nanjing 210008, China
| | - Lintao Wang
- Department of Cardiology, Nanjing Drum Tower Hospital, State Key Laboratory of Pharmaceutical Biotechnology, the Affiliated Hospital of Nanjing University Medical School, No. 321 Zhongshan Road, Nanjing 210008, China
| | - Biao Xu
- Department of Cardiology, Nanjing Drum Tower Hospital, State Key Laboratory of Pharmaceutical Biotechnology, the Affiliated Hospital of Nanjing University Medical School, No. 321 Zhongshan Road, Nanjing 210008, China; Department of Cardiology, Nanjing Drum Tower Hospital, Clinical College of Nanjing Medical University, Nanjing, Jiangsu 210008, China.
| | - Lian Wang
- Department of Cardiology, Nanjing Drum Tower Hospital, State Key Laboratory of Pharmaceutical Biotechnology, the Affiliated Hospital of Nanjing University Medical School, No. 321 Zhongshan Road, Nanjing 210008, China; Department of Cardiology, Nanjing Drum Tower Hospital, Clinical College of Nanjing Medical University, Nanjing, Jiangsu 210008, China.
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Guo M, Xu J, Long X, Liu W, Aris AZ, Yang D, Luo Y, Xu Y, Yu J. Myocardial fibrosis induced by nonylphenol and its regulatory effect on the TGF-β1/LIMK1 signaling pathway. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 272:116110. [PMID: 38364763 DOI: 10.1016/j.ecoenv.2024.116110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 01/23/2024] [Accepted: 02/11/2024] [Indexed: 02/18/2024]
Abstract
OBJECTIVE We here explored whether perinatal nonylphenol (NP) exposure causes myocardial fibrosis (MF) during adulthood in offspring rats and determined the role of the TGF-β1/LIMK1 signaling pathway in NP-induced fibrosis in cardiac fibroblasts (CFs). METHODS AND RESULTS Histopathology revealed increased collagen deposition and altered fiber arrangement in the NP and isoproterenol hydrochloride (ISO) groups compared with the blank group. Systolic and diastolic functions were impaired. Western blotting and qRT-PCR demonstrated that the expression of central myofibrosis-related proteins (collagens Ι and ΙΙΙ, MMP2, MMP9, TGF-β1, α-SMA, IL-1β, and TGF-β1) and genes (Collagen Ι, Collagen ΙΙΙ, TGF-β1, and α-SMA mRNA) was upregulated in the NP and ISO groups compared with the blank group. The mRNA-seq analysis indicated differential expression of TGF-β1 signaling pathway-associated genes and proteins. Fibrosis-related protein and gene expression increased in the CFs stimulated with the recombinant human TGF-β1 and NP, which was consistent with the results of animal experiments. According to the immunofluorescence analysis and western blotting, NP exposure activated the TGF-β1/LIMK1 signaling pathway whose action mechanism in NP-induced CFs was further validated using the LIMK1 inhibitor (BMS-5). The inhibitor modulated the TGF-β1/LIMK1 signaling pathway and suppressed the NP-induced increase in fibrosis-related protein expression in the CFs. Thus, the aforementioned pathway is involved in NP-induced fibrosis. CONCLUSION We here provide the first evidence that perinatal NP exposure causes myocardial fibrosis in growing male rat pups and reveal the molecular mechanism and functional role of the TGF-β1/LIMK1 signaling pathway in this process.
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Affiliation(s)
- Mei Guo
- School of Public Health, Zunyi Medical University, Zunyi, Guizhou, 563000, China
| | - Jie Xu
- School of Public Health, Zunyi Medical University, Zunyi, Guizhou, 563000, China
| | - Xianping Long
- Department of Cardiology, Affiliated Hospital of Zunyi Medical University, Guizhou, China
| | - Weichu Liu
- School of Public Health, Zunyi Medical University, Zunyi, Guizhou, 563000, China
| | - Ahmad Zaharin Aris
- Department of Environment, Faculty of Forestry and Environment, Universiti Putra Malaysia, Serdang, Selangor 43400 UPM, Malaysia
| | - Danli Yang
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, School of Pharmacy, Zunyi Medical University, Zunyi, Guizhou 563000, China
| | - Ya Luo
- School of Public Health, Zunyi Medical University, Zunyi, Guizhou, 563000, China
| | - Yuzhu Xu
- School of Public Health, Zunyi Medical University, Zunyi, Guizhou, 563000, China
| | - Jie Yu
- School of Public Health, Zunyi Medical University, Zunyi, Guizhou, 563000, China.
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Identification of Novel Molecular Targets of Four Microcystin Variants by High-Throughput Virtual Screening. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12052612] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Highly toxic microcystins (MCs) perform complex interactions with many proteins that induce cellular dysregulation, leading to the development of several diseases including cancer. There is significant diversity and chemical complexity among MC congeners, which makes it difficult to identify structure-dependent toxicity outcomes and their long-term effects. The aim of this study was to exploratory identify likely molecular targets of the main MC variants (MC-LA, MC-LR, MC-RR, and MC-LY) by conducting a computational binding affinity analysis using AutoDock Vina to evaluate the interaction of the toxins with 1000 proteins related to different biological functions. All four variants showed strong in silico interactions with proteins that regulate metabolism/immune system, CD38 (top scoring hit, −11.5 kcal/mol); inflammation, TLR4 (−11.4 kcal/mol) and TLR8 (−11.5 kcal/mol); neuronal conduction, BChE; renin–angiotensin signaling, (ACE); thyroid hormone homeostasis (TTR); and cancer-promoting processes, among other biochemical activities. The results show MCs have the potential to bind onto distinct molecular targets which could generate biochemical alterations through a number of signal transduction pathways. In short, this study broadens our knowledge about the mechanisms of action of different variants of microcystins and provides information for future direct experimentation.
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Chen Y, Song D, Gao J, Zhang X, Chen X. Circ-Zfp644 acts as a pro-hypertrophic mediator in an Ang-II induced in vitro myocardial hypertrophy model. Cell Biol Int 2021; 45:1260-1268. [PMID: 33559936 DOI: 10.1002/cbin.11569] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Revised: 12/09/2020] [Accepted: 02/07/2021] [Indexed: 12/23/2022]
Abstract
Cardiac hypertrophy (CH) is a common risk factor for heart failure and even sudden cardiac death. Molecules have emerged as vital regulators in cardiac disorders. LIM domain kinase 1 (Limk1) is reported as a pro-fibrotic mediator in patients with permanent atrial fibrillation and it has also been suggested to aggravate cardiac dysfunction in rats with chronic heart failure. The present study observed that Limk1 was significantly upregulated in the in vitro model of CH induced by angiotensin II (Ang-II). Interestingly, silencing Limk1 led to inhibition of the hypertrophic phenotypes in Ang-II-treated cardiomyocytes. Next, through a series of mechanistic assays including RIP assay, RNA pull-down assay, and luciferase reporter assay, miR-93-5p was verified to target Limk1. Furthermore, circ-Zfp644 was validated as the sponge of miR-93-5p. Circ-Zfp644 functioned as a ceRNA to upregulate Limk1 expression via sequestering miR-93-5p in Ang-II-treated cardiomyocytes. Finally, a range of rescue assays revealed that circ-Zfp644 stimulated hypertrophic effects in Ang-II-treated cardiomyocytes via upregulating Limk1 while miR-93-5p exerted the opposite effects via its inhibition on Limk1. On the whole, the present study revealed that circ-Zfp644 aggravated CH through modulating the miR-93-5p/Limk1 axis. The findings observed on the in vitro model of CH provided new potential for developing CH treatment.
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Affiliation(s)
- Yongquan Chen
- Department of Cardiology, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Daifu Song
- Department of Cardiology, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Jiaxin Gao
- Department of Cardiology, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Xuehuang Zhang
- Department of Cardiology, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Ximing Chen
- Department of Cardiology, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
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Savory K, Manivannan S, Zaben M, Uzun O, Syed YA. Impact of copy number variation on human neurocognitive deficits and congenital heart defects: A systematic review. Neurosci Biobehav Rev 2019; 108:83-93. [PMID: 31682886 DOI: 10.1016/j.neubiorev.2019.10.020] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Accepted: 10/26/2019] [Indexed: 12/16/2022]
Abstract
Copy number variant (CNV) syndromes are often associated with both neurocognitive deficits (NCDs) and congenital heart defects (CHDs). Children and adults with cardiac developmental defects likely to have NCDs leading to increased risk of hospitalisation and reduced level of independence. To date, the association between these two phenotypes have not been explored in relation to CNV syndromes. In order to address this question, we systematically reviewed the prevalence of CHDs in a range of CNV syndromes associated with NCDs. A meta-analysis showed a relationship with the size of CNV and its association with both NCDs and CHDs, and also inheritance pattern. To our knowledge, this is the first review to establish association between NCD and CHDs in CNV patients, specifically in relation to the severity of NCD. Importantly, we also found specific types of CHDs were associated with severe neurocognitive deficits. Finally, we discuss the implications of these results for patients in the clinical setting which warrants further exploration of this association in order to lead an improvement in the quality of patient's life.
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Affiliation(s)
- Katrina Savory
- Neuroscience and Mental Health Research Institute (NMHRI), Hadyn Ellis Building, Cathays, CF24 4HQ, Cardiff, UK; School of Bioscience, The Sir Martin Evans Building, Museum Ave, Cardiff, CF10 3AX, UK
| | - Susruta Manivannan
- Neuroscience and Mental Health Research Institute (NMHRI), Hadyn Ellis Building, Cathays, CF24 4HQ, Cardiff, UK
| | - Malik Zaben
- Neuroscience and Mental Health Research Institute (NMHRI), Hadyn Ellis Building, Cathays, CF24 4HQ, Cardiff, UK
| | - Orhan Uzun
- University Hospital of Wales, Heath Park, Cardiff, CF10 3AX, UK
| | - Yasir Ahmed Syed
- Neuroscience and Mental Health Research Institute (NMHRI), Hadyn Ellis Building, Cathays, CF24 4HQ, Cardiff, UK; School of Bioscience, The Sir Martin Evans Building, Museum Ave, Cardiff, CF10 3AX, UK.
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