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Mariadoss AVA, Wang CZ. Exploring the Cellular and Molecular Mechanism of Discoidin Domain Receptors (DDR1 and DDR2) in Bone Formation, Regeneration, and Its Associated Disease Conditions. Int J Mol Sci 2023; 24:14895. [PMID: 37834343 PMCID: PMC10573612 DOI: 10.3390/ijms241914895] [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: 09/06/2023] [Revised: 10/01/2023] [Accepted: 10/02/2023] [Indexed: 10/15/2023] Open
Abstract
The tyrosine kinase family receptor of discoidin domain receptors (DDR1 and DDR2) is known to be activated by extracellular matrix collagen catalytic binding protein receptors. They play a remarkable role in cell proliferation, differentiation, migration, and cell survival. DDR1 of the DDR family regulates matrix-metalloproteinase, which causes extracellular matrix (ECM) remodeling and reconstruction during unbalanced homeostasis. Collagenous-rich DDR1 triggers the ECM of cartilage to regenerate the cartilage tissue in osteoarthritis (OA) and temporomandibular disorder (TMD). Moreover, DDR2 is prominently present in the fibroblasts, smooth muscle cells, myofibroblasts, and chondrocytes. It is crucial in generating and breaking collagen vital cellular activities like proliferation, differentiation, and adhesion mechanisms. However, the deficiency of DDR1 rather than DDR2 was detrimental in cases of OA and TMDs. DDR1 stimulated the ECM cartilage and improved bone regeneration. Based on the above information, we made an effort to outline the advancement of the utmost promising DDR1 and DDR2 regulation in bone and cartilage, also summarizing their structural, biological activity, and selectivity.
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Affiliation(s)
| | - Chau-Zen Wang
- Orthopaedic Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan;
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Regeneration Medicine and Cell Therapy Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Department of Physiology, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan
- College of Professional Studies, National Pingtung University of Science and Technology, Pingtung 912301, Taiwan
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2
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Fertala J, Wang ML, Rivlin M, Beredjiklian PK, Abboud J, Arnold WV, Fertala A. Extracellular Targets to Reduce Excessive Scarring in Response to Tissue Injury. Biomolecules 2023; 13:biom13050758. [PMID: 37238628 DOI: 10.3390/biom13050758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 04/24/2023] [Accepted: 04/25/2023] [Indexed: 05/28/2023] Open
Abstract
Excessive scar formation is a hallmark of localized and systemic fibrotic disorders. Despite extensive studies to define valid anti-fibrotic targets and develop effective therapeutics, progressive fibrosis remains a significant medical problem. Regardless of the injury type or location of wounded tissue, excessive production and accumulation of collagen-rich extracellular matrix is the common denominator of all fibrotic disorders. A long-standing dogma was that anti-fibrotic approaches should focus on overall intracellular processes that drive fibrotic scarring. Because of the poor outcomes of these approaches, scientific efforts now focus on regulating the extracellular components of fibrotic tissues. Crucial extracellular players include cellular receptors of matrix components, macromolecules that form the matrix architecture, auxiliary proteins that facilitate the formation of stiff scar tissue, matricellular proteins, and extracellular vesicles that modulate matrix homeostasis. This review summarizes studies targeting the extracellular aspects of fibrotic tissue synthesis, presents the rationale for these studies, and discusses the progress and limitations of current extracellular approaches to limit fibrotic healing.
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Affiliation(s)
- Jolanta Fertala
- Department of Orthopaedic Surgery, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA 19107, USA
| | - Mark L Wang
- Department of Orthopaedic Surgery, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA 19107, USA
- Rothman Institute of Orthopaedics, Thomas Jefferson University Hospital, Philadelphia, PA 19107, USA
| | - Michael Rivlin
- Department of Orthopaedic Surgery, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA 19107, USA
- Rothman Institute of Orthopaedics, Thomas Jefferson University Hospital, Philadelphia, PA 19107, USA
| | - Pedro K Beredjiklian
- Department of Orthopaedic Surgery, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA 19107, USA
- Rothman Institute of Orthopaedics, Thomas Jefferson University Hospital, Philadelphia, PA 19107, USA
| | - Joseph Abboud
- Department of Orthopaedic Surgery, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA 19107, USA
- Rothman Institute of Orthopaedics, Thomas Jefferson University Hospital, Philadelphia, PA 19107, USA
| | - William V Arnold
- Department of Orthopaedic Surgery, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA 19107, USA
- Rothman Institute of Orthopaedics, Thomas Jefferson University Hospital, Philadelphia, PA 19107, USA
| | - Andrzej Fertala
- Department of Orthopaedic Surgery, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA 19107, USA
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Borza CM, Bolas G, Pozzi A. Genetic and pharmacological tools to study the role of discoidin domain receptors in kidney disease. Front Pharmacol 2022; 13:1001122. [PMID: 36249782 PMCID: PMC9554349 DOI: 10.3389/fphar.2022.1001122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Accepted: 08/29/2022] [Indexed: 11/13/2022] Open
Abstract
Following injury the kidney undergoes a repair process, which results in replacement of the injured tissue with little evidence of damage. However, repetitive injuries or inability of the kidney to stop the repair process result in abnormal deposition of extracellular matrix (ECM) components leading to fibrosis and organ dysfunction. The synthesis/degradation of ECM components is finely regulated by several factors, including discoidin domain receptors (DDRs). These are receptor tyrosine kinases that are activated by collagens. Upon activation, DDRs control several cell functions that, when exacerbated, contribute to kidney injury and fibrosis. DDRs are undetectable in healthy kidney, but become rapidly upregulated in several kidney fibrotic conditions, thus making them attractive anti-fibrotic targets. DDRs contribute to kidney injury and fibrosis by promoting apoptosis of injured kidney cells, stimulating the production of pro-inflammatory cytokines, and regulating the production of ECM components. They achieve these effects by activating canonical intracellular molecules or by directly interacting with nuclear chromatin and promoting the transcription of pro-fibrotic genes. The goal of this review is to highlight canonical and non-canonical mechanisms whereby DDRs contribute to kidney injury/fibrosis. This review will summarize key findings obtained using cells and mice lacking DDRs and it will discuss the discovery and development of targeted DDR small molecule- and antisense-based inhibitors. Understanding the molecular mechanisms whereby DDRs control kidney injury and fibrosis might enable us to not only develop more selective and potent inhibitors, but to also determine when DDR inhibition needs to be achieved to prevent and/or halt the development of kidney fibrosis.
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Affiliation(s)
- Corina M. Borza
- Department of Medicine (Division of Nephrology), Vanderbilt University School of Medicine, Nashville, TN, United States
| | - Gema Bolas
- Department of Medicine (Division of Nephrology), Vanderbilt University School of Medicine, Nashville, TN, United States
| | - Ambra Pozzi
- Department of Medicine (Division of Nephrology), Vanderbilt University School of Medicine, Nashville, TN, United States
- Veterans Affairs Hospitals, Nashville, TN, United States
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Ngono Ayissi K, Gorwood J, Le Pelletier L, Bourgeois C, Beaupère C, Auclair M, Foresti R, Motterlini R, Atlan M, Barrail-Tran A, Le Grand R, Desjardins D, Fève B, Lambotte O, Capeau J, Béréziat V, Lagathu C. Inhibition of Adipose Tissue Beiging by HIV Integrase Inhibitors, Dolutegravir and Bictegravir, Is Associated with Adipocyte Hypertrophy, Hypoxia, Elevated Fibrosis, and Insulin Resistance in Simian Adipose Tissue and Human Adipocytes. Cells 2022; 11:cells11111841. [PMID: 35681536 PMCID: PMC9180037 DOI: 10.3390/cells11111841] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Revised: 05/23/2022] [Accepted: 06/02/2022] [Indexed: 01/13/2023] Open
Abstract
For people living with HIV, treatment with integrase-strand-transfer-inhibitors (INSTIs) can promote adipose tissue (AT) gain. We previously demonstrated that INSTIs can induce hypertrophy and fibrosis in AT of macaques and humans. By promoting energy expenditure, the emergence of beige adipocytes in white AT (beiging) could play an important role by limiting excess lipid storage and associated adipocyte dysfunction. We hypothesized that INSTIs could alter AT via beiging inhibition. Fibrosis and gene expression were measured in subcutaneous (SCAT) and visceral AT (VAT) from SIV-infected, dolutegravir-treated (SIVART) macaques. Beiging capacity was assessed in human adipose stromal cells (ASCs) undergoing differentiation and being exposed to dolutegravir, bictegravir, or raltegravir. Expression of beige markers, such as positive-regulatory-domain-containing-16 (PRDM16), were lower in AT of SIVART as compared to control macaques, whereas fibrosis-related genes were higher. Dolutegravir and bictegravir inhibited beige differentiation in ASCs, as shown by lower expression of beige markers and lower cell respiration. INSTIs also induced a hypertrophic insulin-resistant state associated with a pro-fibrotic phenotype. Our results indicate that adipocyte hypertrophy induced by INSTIs is involved via hypoxia (revealed by a greater hypoxia-inducible-factor-1-alpha gene expression) in fat fibrosis, beiging inhibition, and thus (via positive feedback), probably, further hypertrophy and associated insulin resistance.
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Affiliation(s)
- Kenza Ngono Ayissi
- Inserm UMR_S938, Centre de Recherche Saint-Antoine, Institut Hospitalo-Universitaire de Cardio-Métabolisme et Nutrition (ICAN), Sorbonne Université, 75012 Paris, France; (K.N.A.); (J.G.); (L.L.P.); (C.B.); (M.A.); (M.A.); (B.F.); (J.C.)
| | - Jennifer Gorwood
- Inserm UMR_S938, Centre de Recherche Saint-Antoine, Institut Hospitalo-Universitaire de Cardio-Métabolisme et Nutrition (ICAN), Sorbonne Université, 75012 Paris, France; (K.N.A.); (J.G.); (L.L.P.); (C.B.); (M.A.); (M.A.); (B.F.); (J.C.)
| | - Laura Le Pelletier
- Inserm UMR_S938, Centre de Recherche Saint-Antoine, Institut Hospitalo-Universitaire de Cardio-Métabolisme et Nutrition (ICAN), Sorbonne Université, 75012 Paris, France; (K.N.A.); (J.G.); (L.L.P.); (C.B.); (M.A.); (M.A.); (B.F.); (J.C.)
| | - Christine Bourgeois
- UMR1184 Inserm, Center for Immunology of Viral Infections and Autoimmune Diseases, IDMIT Department, IBFJ, CEA, Université Paris Saclay, 92032 Fontenay-aux-Roses, France; (C.B.); (A.B.-T.); (R.L.G.); (D.D.); (O.L.)
| | - Carine Beaupère
- Inserm UMR_S938, Centre de Recherche Saint-Antoine, Institut Hospitalo-Universitaire de Cardio-Métabolisme et Nutrition (ICAN), Sorbonne Université, 75012 Paris, France; (K.N.A.); (J.G.); (L.L.P.); (C.B.); (M.A.); (M.A.); (B.F.); (J.C.)
| | - Martine Auclair
- Inserm UMR_S938, Centre de Recherche Saint-Antoine, Institut Hospitalo-Universitaire de Cardio-Métabolisme et Nutrition (ICAN), Sorbonne Université, 75012 Paris, France; (K.N.A.); (J.G.); (L.L.P.); (C.B.); (M.A.); (M.A.); (B.F.); (J.C.)
| | - Roberta Foresti
- INSERM UMR_S955, IMRB, Université Paris-Est Créteil, 94000 Créteil, France; (R.F.); (R.M.)
| | - Roberto Motterlini
- INSERM UMR_S955, IMRB, Université Paris-Est Créteil, 94000 Créteil, France; (R.F.); (R.M.)
| | - Michael Atlan
- Inserm UMR_S938, Centre de Recherche Saint-Antoine, Institut Hospitalo-Universitaire de Cardio-Métabolisme et Nutrition (ICAN), Sorbonne Université, 75012 Paris, France; (K.N.A.); (J.G.); (L.L.P.); (C.B.); (M.A.); (M.A.); (B.F.); (J.C.)
- Service de Chirurgie Plastique et Esthétique, Hôpital Tenon, AP-HP, 75020 Paris, France
| | - Aurélie Barrail-Tran
- UMR1184 Inserm, Center for Immunology of Viral Infections and Autoimmune Diseases, IDMIT Department, IBFJ, CEA, Université Paris Saclay, 92032 Fontenay-aux-Roses, France; (C.B.); (A.B.-T.); (R.L.G.); (D.D.); (O.L.)
| | - Roger Le Grand
- UMR1184 Inserm, Center for Immunology of Viral Infections and Autoimmune Diseases, IDMIT Department, IBFJ, CEA, Université Paris Saclay, 92032 Fontenay-aux-Roses, France; (C.B.); (A.B.-T.); (R.L.G.); (D.D.); (O.L.)
| | - Delphine Desjardins
- UMR1184 Inserm, Center for Immunology of Viral Infections and Autoimmune Diseases, IDMIT Department, IBFJ, CEA, Université Paris Saclay, 92032 Fontenay-aux-Roses, France; (C.B.); (A.B.-T.); (R.L.G.); (D.D.); (O.L.)
| | - Bruno Fève
- Inserm UMR_S938, Centre de Recherche Saint-Antoine, Institut Hospitalo-Universitaire de Cardio-Métabolisme et Nutrition (ICAN), Sorbonne Université, 75012 Paris, France; (K.N.A.); (J.G.); (L.L.P.); (C.B.); (M.A.); (M.A.); (B.F.); (J.C.)
- Service d’Endocrinologie, Diabétologie et Reproduction, Hôpital Saint-Antoine, CRMR, PRISIS, AP-HP, 75012 Paris, France
| | - Olivier Lambotte
- UMR1184 Inserm, Center for Immunology of Viral Infections and Autoimmune Diseases, IDMIT Department, IBFJ, CEA, Université Paris Saclay, 92032 Fontenay-aux-Roses, France; (C.B.); (A.B.-T.); (R.L.G.); (D.D.); (O.L.)
- Service de Médecine Interne et Immunologie Clinique, Hôpital Bicêtre, AP-HP, 94270 Kremlin-Bicêtre, France
| | - Jacqueline Capeau
- Inserm UMR_S938, Centre de Recherche Saint-Antoine, Institut Hospitalo-Universitaire de Cardio-Métabolisme et Nutrition (ICAN), Sorbonne Université, 75012 Paris, France; (K.N.A.); (J.G.); (L.L.P.); (C.B.); (M.A.); (M.A.); (B.F.); (J.C.)
| | - Véronique Béréziat
- Inserm UMR_S938, Centre de Recherche Saint-Antoine, Institut Hospitalo-Universitaire de Cardio-Métabolisme et Nutrition (ICAN), Sorbonne Université, 75012 Paris, France; (K.N.A.); (J.G.); (L.L.P.); (C.B.); (M.A.); (M.A.); (B.F.); (J.C.)
- Correspondence: (V.B.); (C.L.)
| | - Claire Lagathu
- Inserm UMR_S938, Centre de Recherche Saint-Antoine, Institut Hospitalo-Universitaire de Cardio-Métabolisme et Nutrition (ICAN), Sorbonne Université, 75012 Paris, France; (K.N.A.); (J.G.); (L.L.P.); (C.B.); (M.A.); (M.A.); (B.F.); (J.C.)
- Correspondence: (V.B.); (C.L.)
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Ngai D, Mohabeer AL, Mao A, Lino M, Bendeck MP. Stiffness-Responsive Feedback Autoregulation of DDR1 Expression is Mediated by a DDR1-YAP/TAZ Axis. Matrix Biol 2022; 110:129-140. [PMID: 35562016 DOI: 10.1016/j.matbio.2022.05.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Revised: 05/02/2022] [Accepted: 05/05/2022] [Indexed: 12/25/2022]
Abstract
OBJECTIVE Increased matrix stiffness is sensed by the collagen-binding receptor tyrosine kinase discoidin domain receptor 1 (DDR1). We have previously shown that DDR1 stimulates a positive feedback loop to increase its own expression in vascular smooth muscle cells (VSMCs). The transcriptional co-factors YAP/TAZ are stiffness sensing molecules that have not previously been investigated in DDR1 signaling. Here, we test the hypothesis that DDR1 signals through YAP/TAZ to auto-regulate its own expression. APPROACH AND RESULTS We used vascular smooth muscle cells (VSMCs) from wild-type and DDR1 knockout mice stimulated with collagen and/or substrates of different stiffness. We show that DDR1 controls YAP/TAZ nuclear localization and activity, whereas knockdown of YAP/TAZ attenuates DDR1 expression. In response to increased substrate stiffness, collagen stimulation, or RhoA activation, YAP/TAZ translocate to the nucleus and bind to chromatin. Finally, collagen stimulation promotes increased YAP/TAZ association with the Ddr1 promoter. CONCLUSIONS These findings reveal the mechanism by which DDR1 regulates YAP/TAZ activity which can then mediate positive feedback regulation of DDR1 expression by promoting transcription of the DDR1 gene.
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Affiliation(s)
- David Ngai
- Department of Laboratory Medicine and Pathobiology, University of Toronto; Translational Biology and Engineering Program, Ted Rogers Centre for Heart Research, University of Toronto
| | - Amanda L Mohabeer
- Department of Laboratory Medicine and Pathobiology, University of Toronto; Translational Biology and Engineering Program, Ted Rogers Centre for Heart Research, University of Toronto
| | - Amanda Mao
- Department of Laboratory Medicine and Pathobiology, University of Toronto; Translational Biology and Engineering Program, Ted Rogers Centre for Heart Research, University of Toronto
| | - Marsel Lino
- Department of Laboratory Medicine and Pathobiology, University of Toronto; Translational Biology and Engineering Program, Ted Rogers Centre for Heart Research, University of Toronto
| | - Michelle P Bendeck
- Department of Laboratory Medicine and Pathobiology, University of Toronto; Translational Biology and Engineering Program, Ted Rogers Centre for Heart Research, University of Toronto.
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Denny WA, Flanagan JU. Inhibitors of Discoidin Domain Receptor (DDR) Kinases for Cancer and Inflammation. Biomolecules 2021; 11:1671. [PMID: 34827669 PMCID: PMC8615839 DOI: 10.3390/biom11111671] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 11/01/2021] [Accepted: 11/03/2021] [Indexed: 01/22/2023] Open
Abstract
The discoidin domain receptor tyrosine kinases DDR1 and DDR2 are distinguished from other kinase enzymes by their extracellular domains, which interact with collagen rather than with peptidic growth factors, before initiating signaling via tyrosine phosphorylation. They share significant sequence and structural homology with both the c-Kit and Bcr-Abl kinases, and so many inhibitors of those kinases are also effective. Nevertheless, there has been an extensive research effort to develop potent and specific DDR inhibitors. A key interaction for many of these compounds is H-bonding to Met-704 in a hydrophobic pocket of the DDR enzyme. The most widespread use of DDR inhibitors has been for cancer therapy, but they have also shown effectiveness in animal models of inflammatory conditions such as Alzheimer's and Parkinson's diseases, and in chronic renal failure and glomerulonephritis.
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Affiliation(s)
- William A. Denny
- Auckland Cancer Society Research Centre, Maurice Wilkins Centre, School of Medical Sciences, University of Auckland, Auckland 1142, New Zealand;
| | - Jack U. Flanagan
- Auckland Cancer Society Research Centre, Maurice Wilkins Centre, School of Medical Sciences, University of Auckland, Auckland 1142, New Zealand;
- Department of Pharmacology and Clinical Pharmacology, School of Medical Sciences, University of Auckland, Auckland 1142, New Zealand
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Abstract
Adipose is a key tissue regulating energy homeostasis. In states of obesity, caloric intake exceeds energy expenditure, thereby accelerating lipid accumulation with ongoing extracellular matrix (ECM) remodeling. Excess deposition of lipids and expansion of adipocytes potentially decrease ECM flexibility with local hypoxia and inflammation. Hypoxia and chronic low-grade inflammation accelerate the development of adipose tissue fibrosis and related metabolic dysfunctions. Recent research investigated that some cytokines and proteins are functional in regulating energy homeostasis, meanwhile, are potential targets to fight against adipose tissue fibrosis and insulin resistance. In this review, we focused on the regulatory mechanisms and mediators in remodeling of adipose tissue fibrosis, along with their relevance to clinical manifestations.
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Affiliation(s)
- Siqi Li
- School of Life Science, Changchun Normal University, Changchun, China
- School of Medical Technology, Beihua University, Jilin, China
- Diagnostic Research Center, Jilin Province People's Hospital, Changchun, China
| | - Hongxia Gao
- School of Medical Technology, Beihua University, Jilin, China
| | - Yutaka Hasegawa
- Department of Internal Medicine, Iwate Medical University, Iwate, Japan
| | - Xiaodan Lu
- School of Life Science, Changchun Normal University, Changchun, China
- School of Medical Technology, Beihua University, Jilin, China
- Diagnostic Research Center, Jilin Province People's Hospital, Changchun, China
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Mühlfeld C, Pfeiffer C, Schneider V, Bornemann M, Schipke J. Voluntary activity reverses spermidine-induced myocardial fibrosis and lipid accumulation in the obese male mouse. Histochem Cell Biol 2020; 155:75-88. [PMID: 33108533 PMCID: PMC7847856 DOI: 10.1007/s00418-020-01926-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/26/2020] [Indexed: 02/06/2023]
Abstract
Obesity due to high calorie intake induces cardiac hypertrophy and dysfunction, thus contributing to cardiovascular morbidity and mortality. Recent studies in aging suggest that oral supplementation with the natural polyamine spermidine has a cardioprotective effect. Here, the hypothesis was tested that spermidine or voluntary activity alone or in combination protect the heart from adverse effects induced by obesity. Therefore, C57Bl/6 mice (n = 8–10 per group) were subjected to control or high fat diet (HFD) and were left untreated, or either received spermidine via drinking water or were voluntarily active or both. After 30 weeks, the mice were killed and the left ventricle of the hearts was processed for light and electron microscopy. Design-based stereology was used to estimate parameters of hypertrophy, fibrosis, and lipid accumulation. HFD induced cardiac hypertrophy as demonstrated by higher volumes of the left ventricle, cardiomyocytes, interstitium, myofibrils and cardiomyocyte mitochondria. These changes were not influenced by spermidine or voluntary activity. HFD also induced myocardial fibrosis and accumulation of lipid droplets within cardiomyocytes. These HFD effects were enhanced in spermidine treated animals but not in voluntarily active mice. This was even the case in voluntarily active mice that received spermidine. In conclusion, the data confirm the induction of left ventricular hypertrophy by high-fat diet and suggest that—under high fat diet—spermidine enhances cardiomyocyte lipid accumulation and interstitial fibrosis which is counteracted by voluntary activity.
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Affiliation(s)
- Christian Mühlfeld
- Institute of Functional and Applied Anatomy, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany.,Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), German Center for Lung Research (DZL), Hannover, Germany
| | - Clara Pfeiffer
- Institute of Functional and Applied Anatomy, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany
| | - Vanessa Schneider
- Institute of Functional and Applied Anatomy, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany
| | - Melanie Bornemann
- Institute of Functional and Applied Anatomy, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany
| | - Julia Schipke
- Institute of Functional and Applied Anatomy, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany. .,Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), German Center for Lung Research (DZL), Hannover, Germany.
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Qiu Y, Sun L, Hu X, Zhao X, Shi H, Liu Z, Yin X. Compromised browning plasticity of primary subcutaneous adipocytes derived from overweight Chinese adults. Diabetol Metab Syndr 2020; 12:91. [PMID: 33110450 PMCID: PMC7583200 DOI: 10.1186/s13098-020-00599-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/11/2020] [Accepted: 10/14/2020] [Indexed: 12/22/2022] Open
Abstract
PURPOSE People with obesity have a compromised browning capacity of adipose tissue when faced with sympathetic stimuli. This study aimed to determine whether norepinephrine treatment can enhance the induction of precursor cells from human white adipose tissue to differentiate into adipocytes that express key markers of beige adipocytes, and if there is a difference in this capacity between normal weight and overweight individuals. METHODS Stromal vascular cells derived from subcutaneous white adipose tissue of normal weight and overweight groups were induced to differentiation, with or without norepinephrine, into adipocytes. Oxygen consumption rate, lipolysis, the expression of uncoupling protein 1 and other thermogenic genes were compared between different adiposity and treatment groups. RESULTS Peroxisome proliferator activated receptor γ- coactivator-1 alpha (PGC-1 α) and uncoupling protein 1 gene expression increased significantly in the normal weight group, but not in the overweight group, with norepinephrine treatment. The increments of lipolysis and oxygen consumption rate were also higher in adipocytes from the normal weight group with norepinephrine treatment, as compared with those of the overweight group. PR domain containing protein 16 (PRDM 16) gene expression was higher in the normal weight group compared with that in the overweight group, while there were no significant changes found with norepinephrine treatment in either the normal weight or overweight group. CONCLUSIONS Adipogenic precursor cells derived from overweight individuals were less prone to differentiate into beige-like adipocytes when facing sympathetic stimuli than normal weight ones, resulting in the compromised sympathetic-induced browning capacity in subcutaneous white adipose tissue in overweight individuals, which occurred before the onset of overt obesity.
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Affiliation(s)
- Yao Qiu
- Department of Surgery, Shandong University Affiliated Jinan Central Hospital, Jinan, Shandong People’s Republic of China
| | - Lizhi Sun
- Department of Clinical Laboratory, Shandong University Affiliated Jinan Central Hospital, Jinan, Shandong People’s Republic of China
| | - Xiaolin Hu
- Department of Endocrinology and Metabolism, Shandong University Affiliated Jinan Central Hospital, Linong road 8, 5-1-801, Jinan, 250013 Shandong People’s Republic of China
| | - Xin Zhao
- Department of Clinical Laboratory, Shandong University Affiliated Jinan Central Hospital, Jinan, Shandong People’s Republic of China
| | - Hongyan Shi
- Department of Surgery, Shandong University Affiliated Jinan Central Hospital, Jinan, Shandong People’s Republic of China
| | - Zhao Liu
- Department of Surgery, Shandong University Affiliated Jinan Central Hospital, Jinan, Shandong People’s Republic of China
| | - Xiao Yin
- Department of Endocrinology and Metabolism, Shandong University Affiliated Jinan Central Hospital, Linong road 8, 5-1-801, Jinan, 250013 Shandong People’s Republic of China
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