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Papaioannou I, Dritsoula A, Kang P, Baliga RS, Trinder SL, Cook E, Shiwen X, Hobbs AJ, Denton CP, Abraham DJ, Ponticos M. NKX2-5 regulates vessel remodeling in scleroderma-associated pulmonary arterial hypertension. JCI Insight 2024; 9:e164191. [PMID: 38652537 PMCID: PMC11141943 DOI: 10.1172/jci.insight.164191] [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: 08/08/2022] [Accepted: 04/17/2024] [Indexed: 04/25/2024] Open
Abstract
NKX2-5 is a member of the homeobox-containing transcription factors critical in regulating tissue differentiation in development. Here, we report a role for NKX2-5 in vascular smooth muscle cell phenotypic modulation in vitro and in vascular remodeling in vivo. NKX2-5 is upregulated in scleroderma patients with pulmonary arterial hypertension. Suppression of NKX2-5 expression in smooth muscle cells halted vascular smooth muscle proliferation and migration, enhanced contractility, and blocked the expression of extracellular matrix genes. Conversely, overexpression of NKX2-5 suppressed the expression of contractile genes (ACTA2, TAGLN, CNN1) and enhanced the expression of matrix genes (COL1) in vascular smooth muscle cells. In vivo, conditional deletion of NKX2-5 attenuated blood vessel remodeling and halted the progression to hypertension in a mouse chronic hypoxia model. This study revealed that signals related to injury such as serum and low confluence, which induce NKX2-5 expression in cultured cells, is potentiated by TGF-β and further enhanced by hypoxia. The effect of TGF-β was sensitive to ERK5 and PI3K inhibition. Our data suggest a pivotal role for NKX2-5 in the phenotypic modulation of smooth muscle cells during pathological vascular remodeling and provide proof of concept for therapeutic targeting of NKX2-5 in vasculopathies.
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MESH Headings
- Animals
- Mice
- Homeobox Protein Nkx-2.5/genetics
- Homeobox Protein Nkx-2.5/metabolism
- Humans
- Vascular Remodeling/genetics
- Muscle, Smooth, Vascular/metabolism
- Muscle, Smooth, Vascular/pathology
- Male
- Scleroderma, Systemic/pathology
- Scleroderma, Systemic/complications
- Scleroderma, Systemic/metabolism
- Scleroderma, Systemic/genetics
- Myocytes, Smooth Muscle/metabolism
- Myocytes, Smooth Muscle/pathology
- Pulmonary Arterial Hypertension/metabolism
- Pulmonary Arterial Hypertension/genetics
- Pulmonary Arterial Hypertension/pathology
- Pulmonary Arterial Hypertension/etiology
- Female
- Transforming Growth Factor beta/metabolism
- Disease Models, Animal
- Cell Proliferation/genetics
- Middle Aged
- Hypertension, Pulmonary/metabolism
- Hypertension, Pulmonary/genetics
- Hypertension, Pulmonary/etiology
- Hypertension, Pulmonary/pathology
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Affiliation(s)
- Ioannis Papaioannou
- Division of Medicine, Department of Inflammation, University College London, Royal Free Campus, London, United Kingdom
| | - Athina Dritsoula
- Division of Medicine, Department of Inflammation, University College London, Royal Free Campus, London, United Kingdom
| | - Ping Kang
- Division of Medicine, Department of Inflammation, University College London, Royal Free Campus, London, United Kingdom
| | - Reshma S. Baliga
- William Harvey Research Institute, Barts and The London School of Medicine & Dentistry, Queen Mary University of London, Charterhouse Square, London, United Kingdom
| | - Sarah L. Trinder
- Division of Medicine, Department of Inflammation, University College London, Royal Free Campus, London, United Kingdom
| | - Emma Cook
- Division of Medicine, Department of Inflammation, University College London, Royal Free Campus, London, United Kingdom
| | - Xu Shiwen
- Division of Medicine, Department of Inflammation, University College London, Royal Free Campus, London, United Kingdom
| | - Adrian J. Hobbs
- William Harvey Research Institute, Barts and The London School of Medicine & Dentistry, Queen Mary University of London, Charterhouse Square, London, United Kingdom
| | - Christopher P. Denton
- Division of Medicine, Department of Inflammation, University College London, Royal Free Campus, London, United Kingdom
| | - David J. Abraham
- Division of Medicine, Department of Inflammation, University College London, Royal Free Campus, London, United Kingdom
| | - Markella Ponticos
- Division of Medicine, Department of Inflammation, University College London, Royal Free Campus, London, United Kingdom
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2
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Zheng H, Zhai W, Zhong C, Hong Q, Li H, Rui B, Zhu X, Que D, Feng L, Yu B, Huang G, Yin J, Li J, Yan J, Yang P. Nkx2-3 induces autophagy inhibiting proliferation and migration of vascular smooth muscle cells via AMPK/mTOR signaling pathway. J Cell Physiol 2021; 236:7342-7355. [PMID: 33928642 DOI: 10.1002/jcp.30400] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2020] [Revised: 03/24/2021] [Accepted: 03/30/2021] [Indexed: 12/25/2022]
Abstract
Vascular remodeling and restenosis are common complications after percutaneous coronary intervention. Excessive proliferation and migration of vascular smooth muscle cells (VSMCs) play important roles in intimal hyperplasia-induced vascular restenosis. NK2 Homeobox 3 (Nkx2-3), a critical member of Nkx family, is involved in tissue differentiation and organ development. However, the role of Nkx2-3 in VSMCs proliferation and migration remains unknown. In this study, we used carotid balloon injury model and platelet-derived growth factor-BB (PDGF)-treated VSMCs as in vivo and in vitro experimental models. EdU assay and CCK-8 assay were used to detect cell proliferation. Migration was measured by scratch test. Hematoxylin and eosin staining and immunohistochemistry staining were used to evaluate the intimal hyperplasia. The autophagy level was detected by fluorescent mRFP-GFP-LC3 in vitro and by transmission electron microscopy in vivo. It was shown that Nkx2-3 was upregulated both in balloon injured carotid arteries and PDGF-stimulated VSMCs. Adenovirus-mediated Nkx2-3 overexpression inhibited intimal hyperplasia after balloon injury, and suppressed VSMCs proliferation and migration induced by PDGF. Conversely, silencing of Nkx2-3 by small interfering RNA exaggerated proliferation and migration of VSMCs. Furthermore, we found that Nkx2-3 enhanced autophagy level, while the autophagy inhibitor 3-MA eliminated the inhibitory effect of Nkx2-3 on VSMCs proliferation and migration both in vivo and in vitro. Moreover, Nkx2-3 promoted autophagy in VSMCs by activating the AMP-activated protein kinase/mammalian target of rapamycin (AMPK/mTOR) signaling pathway. These results demonstrated for the first time that Nkx2-3 inhibited VSMCs proliferation and migration through AMPK/mTOR-mediated autophagy.
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MESH Headings
- AMP-Activated Protein Kinases/metabolism
- Animals
- Autophagy/drug effects
- Becaplermin/pharmacology
- Carotid Artery Injuries/enzymology
- Carotid Artery Injuries/genetics
- Carotid Artery Injuries/pathology
- Carotid Artery Injuries/prevention & control
- Cell Movement/drug effects
- Cell Proliferation/drug effects
- Cells, Cultured
- Disease Models, Animal
- Homeodomain Proteins/genetics
- Homeodomain Proteins/physiology
- Male
- Muscle, Smooth, Vascular/drug effects
- Muscle, Smooth, Vascular/enzymology
- Muscle, Smooth, Vascular/ultrastructure
- Myocytes, Smooth Muscle/drug effects
- Myocytes, Smooth Muscle/enzymology
- Myocytes, Smooth Muscle/ultrastructure
- Neointima
- Rats, Sprague-Dawley
- Signal Transduction
- TOR Serine-Threonine Kinases/metabolism
- Transcription Factors/genetics
- Transcription Factors/physiology
- Vascular Remodeling
- Rats
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Affiliation(s)
- Huajun Zheng
- Department of Cardiology, Laboratory of Heart Center, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
- Heart Center of Zhujiang Hospital, Guangdong Provincial Biomedical Engineering Technology Research Center for Cardiovascular Disease, Guangzhou, Guangdong, China
- Heart Center of Zhujiang Hospital, Sino-Japanese Cooperation Platform for Translational Research in Heart Failure, Guangzhou, Guangdong, China
| | - Weicheng Zhai
- Department of Cardiology, Laboratory of Heart Center, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
- Heart Center of Zhujiang Hospital, Guangdong Provincial Biomedical Engineering Technology Research Center for Cardiovascular Disease, Guangzhou, Guangdong, China
- Heart Center of Zhujiang Hospital, Sino-Japanese Cooperation Platform for Translational Research in Heart Failure, Guangzhou, Guangdong, China
| | - Chongbin Zhong
- Department of Cardiology, Laboratory of Heart Center, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
- Heart Center of Zhujiang Hospital, Guangdong Provincial Biomedical Engineering Technology Research Center for Cardiovascular Disease, Guangzhou, Guangdong, China
- Heart Center of Zhujiang Hospital, Sino-Japanese Cooperation Platform for Translational Research in Heart Failure, Guangzhou, Guangdong, China
| | - Qingqing Hong
- Department of Cardiology, Laboratory of Heart Center, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
- Heart Center of Zhujiang Hospital, Guangdong Provincial Biomedical Engineering Technology Research Center for Cardiovascular Disease, Guangzhou, Guangdong, China
- Heart Center of Zhujiang Hospital, Sino-Japanese Cooperation Platform for Translational Research in Heart Failure, Guangzhou, Guangdong, China
| | - Hekai Li
- Department of Cardiology, Laboratory of Heart Center, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
- Heart Center of Zhujiang Hospital, Guangdong Provincial Biomedical Engineering Technology Research Center for Cardiovascular Disease, Guangzhou, Guangdong, China
- Heart Center of Zhujiang Hospital, Sino-Japanese Cooperation Platform for Translational Research in Heart Failure, Guangzhou, Guangdong, China
| | - Bowen Rui
- Department of Cardiology, Laboratory of Heart Center, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
- Heart Center of Zhujiang Hospital, Guangdong Provincial Biomedical Engineering Technology Research Center for Cardiovascular Disease, Guangzhou, Guangdong, China
- Heart Center of Zhujiang Hospital, Sino-Japanese Cooperation Platform for Translational Research in Heart Failure, Guangzhou, Guangdong, China
| | - Xingxing Zhu
- Department of Cardiology, Laboratory of Heart Center, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
- Heart Center of Zhujiang Hospital, Guangdong Provincial Biomedical Engineering Technology Research Center for Cardiovascular Disease, Guangzhou, Guangdong, China
- Heart Center of Zhujiang Hospital, Sino-Japanese Cooperation Platform for Translational Research in Heart Failure, Guangzhou, Guangdong, China
| | - Dongdong Que
- Department of Cardiology, Laboratory of Heart Center, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
- Heart Center of Zhujiang Hospital, Guangdong Provincial Biomedical Engineering Technology Research Center for Cardiovascular Disease, Guangzhou, Guangdong, China
- Heart Center of Zhujiang Hospital, Sino-Japanese Cooperation Platform for Translational Research in Heart Failure, Guangzhou, Guangdong, China
| | - Liyun Feng
- Department of Cardiology, Laboratory of Heart Center, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
- Heart Center of Zhujiang Hospital, Guangdong Provincial Biomedical Engineering Technology Research Center for Cardiovascular Disease, Guangzhou, Guangdong, China
- Heart Center of Zhujiang Hospital, Sino-Japanese Cooperation Platform for Translational Research in Heart Failure, Guangzhou, Guangdong, China
| | - Bin Yu
- Department of Cardiology, Laboratory of Heart Center, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
- Heart Center of Zhujiang Hospital, Guangdong Provincial Biomedical Engineering Technology Research Center for Cardiovascular Disease, Guangzhou, Guangdong, China
- Heart Center of Zhujiang Hospital, Sino-Japanese Cooperation Platform for Translational Research in Heart Failure, Guangzhou, Guangdong, China
| | - Guanlin Huang
- Department of Cardiology, Laboratory of Heart Center, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
- Heart Center of Zhujiang Hospital, Guangdong Provincial Biomedical Engineering Technology Research Center for Cardiovascular Disease, Guangzhou, Guangdong, China
- Heart Center of Zhujiang Hospital, Sino-Japanese Cooperation Platform for Translational Research in Heart Failure, Guangzhou, Guangdong, China
| | - Jianlong Yin
- Department of Cardiology, Laboratory of Heart Center, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
- Heart Center of Zhujiang Hospital, Guangdong Provincial Biomedical Engineering Technology Research Center for Cardiovascular Disease, Guangzhou, Guangdong, China
- Heart Center of Zhujiang Hospital, Sino-Japanese Cooperation Platform for Translational Research in Heart Failure, Guangzhou, Guangdong, China
| | - Jiacheng Li
- Department of Cardiology, Laboratory of Heart Center, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
- Heart Center of Zhujiang Hospital, Guangdong Provincial Biomedical Engineering Technology Research Center for Cardiovascular Disease, Guangzhou, Guangdong, China
- Heart Center of Zhujiang Hospital, Sino-Japanese Cooperation Platform for Translational Research in Heart Failure, Guangzhou, Guangdong, China
| | - Jing Yan
- Department of Cardiology, Laboratory of Heart Center, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
- Heart Center of Zhujiang Hospital, Guangdong Provincial Biomedical Engineering Technology Research Center for Cardiovascular Disease, Guangzhou, Guangdong, China
- Heart Center of Zhujiang Hospital, Sino-Japanese Cooperation Platform for Translational Research in Heart Failure, Guangzhou, Guangdong, China
| | - Pingzhen Yang
- Department of Cardiology, Laboratory of Heart Center, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
- Heart Center of Zhujiang Hospital, Guangdong Provincial Biomedical Engineering Technology Research Center for Cardiovascular Disease, Guangzhou, Guangdong, China
- Heart Center of Zhujiang Hospital, Sino-Japanese Cooperation Platform for Translational Research in Heart Failure, Guangzhou, Guangdong, China
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3
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Tamura I, Takagi H, Doi-Tanaka Y, Shirafuta Y, Mihara Y, Shinagawa M, Maekawa R, Taketani T, Sato S, Tamura H, Sugino N. Wilms tumor 1 regulates lipid accumulation in human endometrial stromal cells during decidualization. J Biol Chem 2020; 295:4673-4683. [PMID: 32098869 DOI: 10.1074/jbc.ra120.012841] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2020] [Revised: 02/22/2020] [Indexed: 11/06/2022] Open
Abstract
We previously reported that the transcription factor Wilms tumor 1 (WT1) regulates the expression of insulin-like growth factor-binding protein-1 (IGFBP-1) and prolactin (PRL) during decidualization of human endometrial stromal cells (ESCs). However, other roles of WT1 in decidualization remain to be fully clarified. Here, we investigated how WT1 regulates the physiological functions of human ESCs during decidualization. We incubated ESCs isolated from proliferative-phase endometrium with cAMP to induce decidualization, knocked down WT1 with siRNA, and generated three types of treatments (nontreated cells, cAMP-treated cells, and cAMP-treated + WT1-knockdown cells). To identify WT1-regulated genes, we used gene microarrays and compared the transcriptome data obtained among these three treatments. We observed that WT1 up-regulates 121 genes during decidualization, including several genes involved in lipid transport. The WT1 knockdown inhibited lipid accumulation (LA) in the cAMP-induced ESCs. To examine the mechanisms by which WT1 regulates LA, we focused on very low-density lipoprotein receptor (VLDLR), which is involved in lipoprotein uptake. We found that cAMP up-regulates VLDLR and that the WT1 knockdown inhibits it. Results of ChIP assays revealed that cAMP increases the recruitment of WT1 to the promoter region of the VLDLR gene, indicating that WT1 regulates VLDLR expression. Moreover, VLDLR knockdown inhibited cAMP-induced LA, and VLDLR overexpression reverted the suppression of LA caused by the WT1 knockdown. Taken together, our results indicate that WT1 enhances lipid storage by up-regulating VLDLR expression in human ESCs during decidualization.
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Affiliation(s)
- Isao Tamura
- Department of Obstetrics and Gynecology, Yamaguchi University Graduate School of Medicine, Minamikogushi 1-1-1, Ube 755-8505, Japan
| | - Haruka Takagi
- Department of Obstetrics and Gynecology, Yamaguchi University Graduate School of Medicine, Minamikogushi 1-1-1, Ube 755-8505, Japan
| | - Yumiko Doi-Tanaka
- Department of Obstetrics and Gynecology, Yamaguchi University Graduate School of Medicine, Minamikogushi 1-1-1, Ube 755-8505, Japan
| | - Yuichiro Shirafuta
- Department of Obstetrics and Gynecology, Yamaguchi University Graduate School of Medicine, Minamikogushi 1-1-1, Ube 755-8505, Japan
| | - Yumiko Mihara
- Department of Obstetrics and Gynecology, Yamaguchi University Graduate School of Medicine, Minamikogushi 1-1-1, Ube 755-8505, Japan
| | - Masahiro Shinagawa
- Department of Obstetrics and Gynecology, Yamaguchi University Graduate School of Medicine, Minamikogushi 1-1-1, Ube 755-8505, Japan
| | - Ryo Maekawa
- Department of Obstetrics and Gynecology, Yamaguchi University Graduate School of Medicine, Minamikogushi 1-1-1, Ube 755-8505, Japan
| | - Toshiaki Taketani
- Department of Obstetrics and Gynecology, Yamaguchi University Graduate School of Medicine, Minamikogushi 1-1-1, Ube 755-8505, Japan
| | - Shun Sato
- Department of Obstetrics and Gynecology, Yamaguchi University Graduate School of Medicine, Minamikogushi 1-1-1, Ube 755-8505, Japan
| | - Hiroshi Tamura
- Department of Obstetrics and Gynecology, Yamaguchi University Graduate School of Medicine, Minamikogushi 1-1-1, Ube 755-8505, Japan
| | - Norihiro Sugino
- Department of Obstetrics and Gynecology, Yamaguchi University Graduate School of Medicine, Minamikogushi 1-1-1, Ube 755-8505, Japan
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4
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Maldonado-Ruiz LP, Montenegro-Cadena L, Blattner B, Menghwar S, Zurek L, Londono-Renteria B. Differential Tick Salivary Protein Profiles and Human Immune Responses to Lone Star Ticks ( Amblyomma americanum) From the Wild vs. a Laboratory Colony. Front Immunol 2019; 10:1996. [PMID: 31555263 PMCID: PMC6724717 DOI: 10.3389/fimmu.2019.01996] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Accepted: 08/07/2019] [Indexed: 12/30/2022] Open
Abstract
Ticks are a growing concern to human and animal health worldwide and they are leading vectors of arthropod-borne pathogens in the United States. Ticks are pool blood feeders that can attach to the host skin for days to weeks using their saliva to counteract the host defenses. Tick saliva, as in other hematophagous arthropods, contains pharmacological and immunological active compounds, which modulate local and systemic immune responses and induce antibody production. In the present study, we explore differences in the salivary gland extract (SGE) protein content of Amblyomma americanum ticks raised in a laboratory colony (CT) vs. those collected in the field (FT). First, we measured the IgG antibody levels against SGE in healthy volunteers residing in Kansas. ELISA test showed higher IgG antibody levels when using the SGE from CT as antigen. Interestingly, antibody levels against both, CT-SGE and FT-SGE, were high in the warm months (May-June) and decreased in the cold months (September-November). Immunoblot testing revealed a set of different immunogenic bands for each group of ticks and mass spectrometry data revealed differences in at 19 proteins specifically identified in the CT-SGE group and 20 from the FT-SGE group. Our results suggest that differences in the salivary proteins between CT-SGE and FT-SGE may explain the differential immune responses observed in this study.
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Affiliation(s)
- L Paulina Maldonado-Ruiz
- Medical/Veterinary Entomology Laboratory, Department of Entomology, Kansas State University, Manhattan, KS, United States
| | - Lidia Montenegro-Cadena
- Vector Biology Laboratory, Department of Entomology, Kansas State University, Manhattan, KS, United States
| | - Brittany Blattner
- Vector Biology Laboratory, Department of Entomology, Kansas State University, Manhattan, KS, United States
| | - Sapna Menghwar
- Vector Biology Laboratory, Department of Entomology, Kansas State University, Manhattan, KS, United States
| | - Ludek Zurek
- Department of Pathology and Parasitology, CEITEC Center for Zoonoses, University of Veterinary and Pharmaceutical Sciences, Brno, Czechia
| | - Berlin Londono-Renteria
- Vector Biology Laboratory, Department of Entomology, Kansas State University, Manhattan, KS, United States
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5
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Wilmanns JC, Pandey R, Hon O, Chandran A, Schilling JM, Forte E, Wu Q, Cagnone G, Bais P, Philip V, Coleman D, Kocalis H, Archer SK, Pearson JT, Ramialison M, Heineke J, Patel HH, Rosenthal NA, Furtado MB, Costa MW. Metformin intervention prevents cardiac dysfunction in a murine model of adult congenital heart disease. Mol Metab 2019; 20:102-114. [PMID: 30482476 PMCID: PMC6358551 DOI: 10.1016/j.molmet.2018.11.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Revised: 11/06/2018] [Accepted: 11/10/2018] [Indexed: 12/27/2022] Open
Abstract
OBJECTIVE Congenital heart disease (CHD) is the most frequent birth defect worldwide. The number of adult patients with CHD, now referred to as ACHD, is increasing with improved surgical and treatment interventions. However the mechanisms whereby ACHD predisposes patients to heart dysfunction are still unclear. ACHD is strongly associated with metabolic syndrome, but how ACHD interacts with poor modern lifestyle choices and other comorbidities, such as hypertension, obesity, and diabetes, is mostly unknown. METHODS We used a newly characterized mouse genetic model of ACHD to investigate the consequences and the mechanisms associated with combined obesity and ACHD predisposition. Metformin intervention was used to further evaluate potential therapeutic amelioration of cardiac dysfunction in this model. RESULTS ACHD mice placed under metabolic stress (high fat diet) displayed decreased left ventricular ejection fraction. Comprehensive physiological, biochemical, and molecular analysis showed that ACHD hearts exhibited early changes in energy metabolism with increased glucose dependence as main cardiac energy source. These changes preceded cardiac dysfunction mediated by exposure to high fat diet and were associated with increased disease severity. Restoration of metabolic balance by metformin administration prevented the development of heart dysfunction in ACHD predisposed mice. CONCLUSIONS This study reveals that early metabolic impairment reinforces heart dysfunction in ACHD predisposed individuals and diet or pharmacological interventions can be used to modulate heart function and attenuate heart failure. Our study suggests that interactions between genetic and metabolic disturbances ultimately lead to the clinical presentation of heart failure in patients with ACHD. Early manipulation of energy metabolism may be an important avenue for intervention in ACHD patients to prevent or delay onset of heart failure and secondary comorbidities. These interactions raise the prospect for a translational reassessment of ACHD presentation in the clinic.
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Affiliation(s)
- Julia C Wilmanns
- Australian Regenerative Medicine Institute, Monash University, Australia; Department of Cardiology and Angiology, Experimental Cardiology, Hannover Medical School, Germany
| | | | | | - Anjana Chandran
- Australian Regenerative Medicine Institute, Monash University, Australia
| | - Jan M Schilling
- VA San Diego Healthcare System and Department of Anesthesiology, University of California San Diego, USA
| | | | - Qizhu Wu
- Monash Biomedical Imaging, Monash University, Australia
| | - Gael Cagnone
- Department of Pharmacology, Research Center of CHU Sainte-Justine, Canada
| | | | | | | | | | - Stuart K Archer
- Monash Bioinformatics Platform, Monash University, Australia; Biomedicine Discovery Institute, Faculty of Medicine, Nursing and Health Sciences, Monash University, Australia
| | - James T Pearson
- Monash Biomedical Imaging, Monash University, Australia; Department of Physiology, Monash University, Australia; National Cerebral & Cardiovascular Center, Suita 565-8565, Japan
| | - Mirana Ramialison
- Australian Regenerative Medicine Institute, Monash University, Australia; Systems Biology Institute, Australia
| | - Joerg Heineke
- Department of Cardiology and Angiology, Experimental Cardiology, Hannover Medical School, Germany
| | - Hemal H Patel
- VA San Diego Healthcare System and Department of Anesthesiology, University of California San Diego, USA
| | - Nadia A Rosenthal
- The Jackson Laboratory, USA; Australian Regenerative Medicine Institute, Monash University, Australia; National Heart and Lung Institute, Imperial College London, W12 0NN, UK
| | - Milena B Furtado
- The Jackson Laboratory, USA; Australian Regenerative Medicine Institute, Monash University, Australia
| | - Mauro W Costa
- The Jackson Laboratory, USA; Australian Regenerative Medicine Institute, Monash University, Australia.
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6
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Wang F, Liu Z, Park SH, Gwag T, Lu W, Ma M, Sui Y, Zhou C. Myeloid β-Catenin Deficiency Exacerbates Atherosclerosis in Low-Density Lipoprotein Receptor-Deficient Mice. Arterioscler Thromb Vasc Biol 2018; 38:1468-1478. [PMID: 29724817 PMCID: PMC6023740 DOI: 10.1161/atvbaha.118.311059] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Accepted: 04/18/2018] [Indexed: 11/16/2022]
Abstract
Supplemental Digital Content is available in the text. Objective— The Wnt/β-catenin signaling is an ancient and evolutionarily conserved pathway that regulates essential aspects of cell differentiation, proliferation, migration and polarity. Canonical Wnt/β-catenin signaling has also been implicated in the pathogenesis of atherosclerosis. Macrophage is one of the major cell types involved in the initiation and progression of atherosclerosis, but the role of macrophage β-catenin in atherosclerosis remains elusive. This study aims to investigate the impact of β-catenin expression on macrophage functions and atherosclerosis development. Approach and Results— To investigate the role of macrophage canonical Wnt/β-catenin signaling in atherogenesis, we generated β-cateninΔmyeLDLR−/− mice (low-density lipoprotein receptor–deficient mice with myeloid-specific β-catenin deficiency). As expected, deletion of β-catenin decreased macrophage adhesion and migration properties in vitro. However, deficiency of β-catenin significantly increased atherosclerotic lesion areas in the aortic root of LDLR−/− (low-density lipoprotein receptor–deficient) mice without affecting the plasma lipid levels and atherosclerotic plaque composition. Mechanistic studies revealed that β-catenin can regulate activation of STAT (signal transducer and activator of transcription) pathway in macrophages, and ablation of β-catenin resulted in STAT3 downregulation and STAT1 activation, leading to elevated macrophage inflammatory responses and increased atherosclerosis. Conclusions— This study demonstrates a critical role of myeloid β-catenin expression in atherosclerosis by modulating macrophage inflammatory responses.
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Affiliation(s)
- Fang Wang
- From the Department of Pharmacology and Nutritional Sciences (F.W., Z.L., S.-H.P., T.G., W.L., M.M., Y.S., C.Z.)
| | - Zun Liu
- From the Department of Pharmacology and Nutritional Sciences (F.W., Z.L., S.-H.P., T.G., W.L., M.M., Y.S., C.Z.)
| | - Se-Hyung Park
- From the Department of Pharmacology and Nutritional Sciences (F.W., Z.L., S.-H.P., T.G., W.L., M.M., Y.S., C.Z.)
| | - Taesik Gwag
- From the Department of Pharmacology and Nutritional Sciences (F.W., Z.L., S.-H.P., T.G., W.L., M.M., Y.S., C.Z.)
| | - Weiwei Lu
- From the Department of Pharmacology and Nutritional Sciences (F.W., Z.L., S.-H.P., T.G., W.L., M.M., Y.S., C.Z.)
| | - Murong Ma
- From the Department of Pharmacology and Nutritional Sciences (F.W., Z.L., S.-H.P., T.G., W.L., M.M., Y.S., C.Z.)
| | - Yipeng Sui
- From the Department of Pharmacology and Nutritional Sciences (F.W., Z.L., S.-H.P., T.G., W.L., M.M., Y.S., C.Z.)
| | - Changcheng Zhou
- From the Department of Pharmacology and Nutritional Sciences (F.W., Z.L., S.-H.P., T.G., W.L., M.M., Y.S., C.Z.)
- Saha Cardiovascular Research Center (C.Z.), University of Kentucky, Lexington
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7
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Dritsoula A, Papaioannou I, Guerra SG, Fonseca C, Martin J, Herrick AL, Abraham DJ, Denton CP, Ponticos M. Molecular Basis for Dysregulated Activation of NKX2-5 in the Vascular Remodeling of Systemic Sclerosis. Arthritis Rheumatol 2018; 70:920-931. [PMID: 29342503 PMCID: PMC6001790 DOI: 10.1002/art.40419] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2017] [Accepted: 01/11/2018] [Indexed: 11/12/2022]
Abstract
OBJECTIVE NKX2-5 is a homeobox transcription factor that is required for the formation of the heart and vessels during development, with significant postnatal down-regulation and reactivation in disease states, characterized by vascular remodeling. The purpose of this study was to investigate mechanisms that activate NKX2-5 expression in diseased vessels, such as systemic sclerosis (scleroderma; SSc)-associated pulmonary hypertension (PH), and to identify genetic variability that potentially underlies susceptibility to specific vascular complications. METHODS We explored NKX2-5 expression in biopsy samples from patients with SSc-associated PH and in pulmonary artery smooth muscle cells (PASMCs) from patients with scleroderma. Disease-associated putative functional single-nucleotide polymorphisms (SNPs) at the NKX2-5 locus were cloned and studied in reporter gene assays. SNP function was further examined through protein-DNA binding assays, chromatin immunoprecipitation assays, and RNA silencing analyses. RESULTS Increased NKX2-5 expression in biopsy samples from patients with SSc-associated PH was localized to remodeled vessels and PASMCs. Meta-analysis of 2 independent scleroderma cohorts revealed an association of rs3131917 with scleroderma (P = 0.029). We demonstrated that disease-associated SNPs are located in a novel functional enhancer, which increases NKX2-5 transcriptional activity through the binding of GATA-6, c-Jun, and myocyte-specific enhancer factor 2C. We also characterized an activator/coactivator transcription-enhancer factor domain 1 (TEAD1)/Yes-associated protein 1 (YAP1) complex, which was bound at rs3095870, another functional SNP, with TEAD1 binding the risk allele and activating the transcription of NKX2-5. CONCLUSION NKX2-5 is genetically associated with scleroderma, pulmonary hypertension, and fibrosis. Functional evidence revealed a regulatory mechanism that results in NKX2-5 transcriptional activation in PASMCs through the interaction of an upstream promoter and a novel downstream enhancer. This mechanism can act as a model for NKX2-5 activation in cardiovascular disease characterized by vascular remodeling.
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Affiliation(s)
| | | | | | | | - Javier Martin
- Instituto de Parasitología y Biomédicina López-Neyra , Granada, Spain
| | - Ariane L Herrick
- University of Manchester, Salford Royal NHS Foundation Trust and Central Manchester NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK
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