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Gonzalez Medina M, Liu Z, Wang J, Zhang C, Cash SB, Cummins CL, Giacca A. Cell-Specific Effects of Insulin in a Murine Model of Restenosis Under Insulin-Sensitive and Insulin-Resistant Conditions. Cells 2024; 13:1387. [PMID: 39195275 DOI: 10.3390/cells13161387] [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: 05/12/2024] [Revised: 07/28/2024] [Accepted: 08/06/2024] [Indexed: 08/29/2024] Open
Abstract
Restenosis following percutaneous revascularization is a major challenge in patients with insulin resistance and diabetes. Currently, the vascular effects of insulin are not fully understood. In vitro, insulin's effects on endothelial cells (ECs) are beneficial, whereas on vascular smooth muscle cells (SMCs), they are mitogenic. We previously demonstrated a suppressive effect of insulin on neointimal growth under insulin-sensitive conditions that was abolished in insulin-resistant conditions. Here, we aimed to determine the cell-specific effects of insulin on neointimal growth in a model of restenosis under insulin-sensitive and insulin-resistant conditions. Vascular cell-specific insulin receptor (IR)-deficient mice were fed a low-fat diet (LFD) or a high-fat, high-sucrose diet (HFSD) and implanted with an insulin pellet or vehicle prior to femoral artery wire injury. In insulin-sensitive conditions, insulin decreased neointimal growth only in controls. However, under insulin-resistant conditions, insulin had no effect in either control, EC-specific or SMC-specific IR-deficient mice. These data demonstrate that EC and SMC IRs are required for the anti-restenotic effect of insulin in insulin-sensitive conditions and that, in insulin resistance, insulin has no adverse effect on vascular SMCs in vivo.
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MESH Headings
- Animals
- Insulin Resistance
- Insulin/metabolism
- Insulin/pharmacology
- Mice
- Disease Models, Animal
- Receptor, Insulin/metabolism
- Endothelial Cells/metabolism
- Endothelial Cells/drug effects
- Myocytes, Smooth Muscle/metabolism
- Myocytes, Smooth Muscle/drug effects
- Neointima/pathology
- Neointima/metabolism
- Male
- Muscle, Smooth, Vascular/metabolism
- Muscle, Smooth, Vascular/drug effects
- Muscle, Smooth, Vascular/pathology
- Mice, Inbred C57BL
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Affiliation(s)
- Marel Gonzalez Medina
- Department of Physiology, Temerty Faculty of Medicine, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Zhiwei Liu
- Department of Physiology, Temerty Faculty of Medicine, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Johny Wang
- Department of Physiology, Temerty Faculty of Medicine, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Cindy Zhang
- Department of Physiology, Temerty Faculty of Medicine, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Sarah B Cash
- Department of Pharmaceutical Sciences, Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, ON M5S 3M2, Canada
| | - Carolyn L Cummins
- Department of Pharmaceutical Sciences, Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, ON M5S 3M2, Canada
| | - Adria Giacca
- Department of Physiology, Temerty Faculty of Medicine, University of Toronto, Toronto, ON M5S 1A8, Canada
- Department of Medicine, Temerty Faculty of Medicine, University of Toronto, Toronto, ON M5S 3H2, Canada
- Institute of Medical Science, University of Toronto, Toronto, ON M5S 3H2, Canada
- Banting and Best Diabetes Centre, University of Toronto, Toronto, ON M5G 2C4, Canada
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2
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Li J, Li ZP, Xu SS, Wang W. Unraveling the biological link between diabetes mellitus and prostate cancer: Insights and implications. World J Diabetes 2024; 15:1367-1373. [PMID: 38983816 PMCID: PMC11229951 DOI: 10.4239/wjd.v15.i6.1367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Revised: 03/15/2024] [Accepted: 04/18/2024] [Indexed: 06/11/2024] Open
Abstract
This article is a comprehensive study based on research on the connection between diabetes mellitus (DM) and prostate cancer (PCa). It investigates the potential role of DM as an independent risk factor for PCa, delving into the biological links, including insulin resistance and hormonal changes. The paper critically analyzes previous studies that have shown varying results and introduces mendelian randomization as a method for establishing causality. It emphasizes the importance of early DM screening and lifestyle modifications in preventing PCa, and proposes future research directions for further under-standing the DM - PCa relationship.
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Affiliation(s)
- Jian Li
- Department of Interventional Oncology, Municipal Hospital Affiliated to Taizhou University, Taizhou 318000, Zhejiang Province, China
| | - Zhi-Peng Li
- School of Medicine, Taizhou University, Taizhou 318000, Zhejiang Province, China
| | - Si-Si Xu
- School of Medicine, Taizhou University, Taizhou 318000, Zhejiang Province, China
| | - Wei Wang
- Department of Interventional Oncology, Municipal Hospital Affiliated to Taizhou University, Taizhou 318000, Zhejiang Province, China
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3
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Yu MG, Gordin D, Fu J, Park K, Li Q, King GL. Protective Factors and the Pathogenesis of Complications in Diabetes. Endocr Rev 2024; 45:227-252. [PMID: 37638875 PMCID: PMC10911956 DOI: 10.1210/endrev/bnad030] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 06/13/2023] [Accepted: 08/24/2023] [Indexed: 08/29/2023]
Abstract
Chronic complications of diabetes are due to myriad disorders of numerous metabolic pathways that are responsible for most of the morbidity and mortality associated with the disease. Traditionally, diabetes complications are divided into those of microvascular and macrovascular origin. We suggest revising this antiquated classification into diabetes complications of vascular, parenchymal, and hybrid (both vascular and parenchymal) tissue origin, since the profile of diabetes complications ranges from those involving only vascular tissues to those involving mostly parenchymal organs. A major paradigm shift has occurred in recent years regarding the pathogenesis of diabetes complications, in which the focus has shifted from studies on risks to those on the interplay between risk and protective factors. While risk factors are clearly important for the development of chronic complications in diabetes, recent studies have established that protective factors are equally significant in modulating the development and severity of diabetes complications. These protective responses may help explain the differential severity of complications, and even the lack of pathologies, in some tissues. Nevertheless, despite the growing number of studies on this field, comprehensive reviews on protective factors and their mechanisms of action are not available. This review thus focused on the clinical, biochemical, and molecular mechanisms that support the idea of endogenous protective factors, and their roles in the initiation and progression of chronic complications in diabetes. In addition, this review also aimed to identify the main needs of this field for future studies.
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Affiliation(s)
- Marc Gregory Yu
- Research Division, Joslin Diabetes Center, Boston, MA 02215, USA
- Department of Medicine, Harvard Medical School, Boston, MA 02215, USA
| | - Daniel Gordin
- Research Division, Joslin Diabetes Center, Boston, MA 02215, USA
- Department of Medicine, Harvard Medical School, Boston, MA 02215, USA
- Department of Nephrology, University of Helsinki and Helsinki University Central Hospital, Stenbäckinkatu 9, FI-00029 Helsinki, Finland
- Minerva Foundation Institute for Medical Research, Tukholmankatu 8, 00290 Helsinki, Finland
| | - Jialin Fu
- Research Division, Joslin Diabetes Center, Boston, MA 02215, USA
- Department of Medicine, Harvard Medical School, Boston, MA 02215, USA
| | - Kyoungmin Park
- Research Division, Joslin Diabetes Center, Boston, MA 02215, USA
- Department of Medicine, Harvard Medical School, Boston, MA 02215, USA
| | - Qian Li
- Research Division, Joslin Diabetes Center, Boston, MA 02215, USA
- Department of Medicine, Harvard Medical School, Boston, MA 02215, USA
| | - George Liang King
- Research Division, Joslin Diabetes Center, Boston, MA 02215, USA
- Department of Medicine, Harvard Medical School, Boston, MA 02215, USA
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4
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Bar-Tana J. TorS - Reframing a rational for type 2 diabetes treatment. Diabetes Metab Res Rev 2024; 40:e3712. [PMID: 37615286 DOI: 10.1002/dmrr.3712] [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: 02/26/2023] [Revised: 05/11/2023] [Accepted: 08/04/2023] [Indexed: 08/25/2023]
Abstract
The mammalian target of rapamycin complex 1 syndrome (Tors), paradigm implies an exhaustive cohesive disease entity driven by a hyperactive mTORC1, and which includes obesity, type 2 diabetic hyperglycemia, diabetic dyslipidemia, diabetic cardiomyopathy, diabetic nephropathy, diabetic peripheral neuropathy, hypertension, atherosclerotic cardiovascular disease, non-alcoholic fatty liver disease, some cancers, neurodegeneration, polycystic ovary syndrome, psoriasis and other. The TorS paradigm may account for the efficacy of standard-of-care treatments of type 2 diabetes (T2D) in alleviating the glycaemic and non-glycaemic diseases of TorS in T2D and non-T2D patients. The TorS paradigm may generate novel treatments for TorS diseases.
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Jin HJ, Wu ZH, Zhang BF, Deng J, Xu YD, Wang XY, Song ZY, Lu XW, Wang WT, Zheng XT. CDKN2B-AS1 mediates proliferation and migration of vascular smooth muscle cells induced by insulin. Cell Tissue Res 2023; 394:455-469. [PMID: 37907763 DOI: 10.1007/s00441-023-03836-9] [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: 05/04/2023] [Accepted: 10/02/2023] [Indexed: 11/02/2023]
Abstract
Excessive proliferation and migration of vascular smooth muscle cells (VSMCs) contribute to the intimal hyperplasia in type 2 diabetes mellitus (T2DM) patients after percutaneous coronary intervention. We aimed to investigate the role of lncRNA cyclin-dependent kinase inhibitor 2B antisense RNA 1 (CDKN2B-AS1) in VSMC proliferation and migration, as well as the underlying mechanism. T2DM model mice with carotid balloon injury were used in vivo and mouse aortic vascular smooth muscle cells (MOVAS) stimulated by insulin were used in vitro to assess the role of CDKN2B-AS1 in VSMC proliferation and migration following vascular injury in T2DM state. To investigate cell viability and migration, MTT assay and Transwell assay were conducted. To elucidate the underlying molecular mechanisms, the methylation-specific polymerase chain reaction, RNA immunoprecipitation, RNA-pull down, co-immunoprecipitation, and chromatin immunoprecipitation were performed. In vivo, CDKN2B-AS1 was up-regulated in common carotid artery tissues. In vitro, insulin treatment increased CDKN2B-AS1 level, enhanced MOVAS cell proliferation and migration, while the promoting effect was reversed by CDKN2B-AS1 knockdown. CDKN2B-AS1 forms a complex with enhancer of zeste homolog 2 (EZH2) and DNA methyltransferase (cytosine-5) 1 (DNMT1) to regulate smooth muscle 22 alpha (SM22α) methylation levels. In insulin-stimulated cells, SM22α knockdown abrogated the inhibitory effect of CDKN2B-AS1 knockdown on cell viability and migration. Injection of lentivirus-sh-CDKN2B-AS1 relieved intimal hyperplasia in T2DM mice with carotid balloon injury. Up-regulation of CDKN2B-AS1 induced by insulin promotes cell proliferation and migration by targeting SM22α through forming a complex with EZH2 and DNMT1, thereby aggravating the intimal hyperplasia after vascular injury in T2DM.
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Affiliation(s)
- Hao-Jie Jin
- Department of Vascular Surgery, the Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325015, China
| | - Zi-Heng Wu
- Department of Vascular Surgery, School of Medicine, the First Affiliated Hospital, Zhejiang University, Hangzhou, 310003, China
| | - Bao-Fu Zhang
- Department of Vascular Surgery, the Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325015, China
| | - Jie Deng
- Department of Vascular Surgery, the Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325015, China
| | - Yin-Dong Xu
- Department of Vascular Surgery, the Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325015, China
| | - Xin-Yu Wang
- Institute of Ischemia-Reperfusion Injury, Wenzhou Medical University, Wenzhou, Zhejiang, 325035, China
| | - Zheng-Yang Song
- Institute of Ischemia-Reperfusion Injury, Wenzhou Medical University, Wenzhou, Zhejiang, 325035, China
| | - Xin-Wu Lu
- Department of Vascular Surgery, Shanghai Ninth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
| | - Wan-Tie Wang
- Institute of Ischemia-Reperfusion Injury, Wenzhou Medical University, Wenzhou, Zhejiang, 325035, China.
| | - Xiang-Tao Zheng
- Department of Vascular Surgery, the Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325015, China.
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6
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Izquierdo MC, Harris M, Shanmugarajah N, Zhong K, Ozcan L, Fredman G, Haeusler RA. Insulin sensitization by hepatic FoxO deletion is insufficient to lower atherosclerosis in mice. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.10.14.562366. [PMID: 37905094 PMCID: PMC10614776 DOI: 10.1101/2023.10.14.562366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/02/2023]
Abstract
Background– Type 2 diabetes is associated with an increased risk of atherosclerotic cardiovascular disease. It has been suggested that insulin resistance underlies this link, possibly by altering the functions of cells in the artery wall. We aimed to test whether improving systemic insulin sensitivity reduces atherosclerosis. Methods– We used mice that are established to have improved systemic insulin sensitivity: those lacking FoxO transcription factors in hepatocytes. Three hepatic FoxO isoforms (FoxO1, FoxO3, and FoxO4) function together to promote hepatic glucose output, and ablating them lowers glucose production, lowers circulating glucose and insulin, and improves systemic insulin sensitivity. We made these mice susceptible to atherosclerosis in two different ways, by injecting them with gain-of-function AAV8.mPcsk9D377Y and by crossing with Ldlr-/- mice. Results– We verified that hepatic FoxO ablation improves systemic insulin sensitivity in these atherosclerotic settings. We observed that FoxO deficiency caused no reductions in atherosclerosis, and in some cases increased atherosclerosis. These phenotypes coincided with large increases in circulating triglycerides in FoxO-ablated mice. Conclusions– These findings suggest that systemic insulin sensitization is insufficient to reduce atherosclerosis.
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Affiliation(s)
- María Concepción Izquierdo
- Naomi Berrie Diabetes Center; Columbia University College of Physicians and Surgeons; New York, NY, 10032; USA
- Department of Pathology and Cell Biology; Columbia University College of Physicians and Surgeons; New York, NY, 10032; USA
| | - Michael Harris
- Naomi Berrie Diabetes Center; Columbia University College of Physicians and Surgeons; New York, NY, 10032; USA
| | - Niroshan Shanmugarajah
- Naomi Berrie Diabetes Center; Columbia University College of Physicians and Surgeons; New York, NY, 10032; USA
- Department of Pathology and Cell Biology; Columbia University College of Physicians and Surgeons; New York, NY, 10032; USA
| | - Kendra Zhong
- Naomi Berrie Diabetes Center; Columbia University College of Physicians and Surgeons; New York, NY, 10032; USA
| | - Lale Ozcan
- Department of Medicine; Columbia University College of Physicians and Surgeons; New York, NY, 10032; USA
| | - Gabrielle Fredman
- Department of Molecular and Cellular Physiology, Albany Medical College, Albany, NY, 12208; USA
| | - Rebecca A. Haeusler
- Naomi Berrie Diabetes Center; Columbia University College of Physicians and Surgeons; New York, NY, 10032; USA
- Department of Pathology and Cell Biology; Columbia University College of Physicians and Surgeons; New York, NY, 10032; USA
- Department of Medicine; Columbia University College of Physicians and Surgeons; New York, NY, 10032; USA
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7
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Xiong Y, Wang Y, Yang T, Luo Y, Xu S, Li L. Receptor Tyrosine Kinase: Still an Interesting Target to Inhibit the Proliferation of Vascular Smooth Muscle Cells. Am J Cardiovasc Drugs 2023; 23:497-518. [PMID: 37524956 DOI: 10.1007/s40256-023-00596-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 07/05/2023] [Indexed: 08/02/2023]
Abstract
Vascular smooth muscle cells (VSMCs) proliferation is a critical event that contributes to the pathogenesis of vascular remodeling such as hypertension, restenosis, and pulmonary hypertension. Increasing evidences have revealed that VSMCs proliferation is associated with the activation of receptor tyrosine kinases (RTKs) by their ligands, including the insulin-like growth factor receptor (IGFR), fibroblast growth factor receptor (FGFR), epidermal growth factor receptor (EGFR), vascular endothelial growth factor receptor (VEGFR), and platelet-derived growth factor receptor (PDGFR). Moreover, some receptor tyrosinase inhibitors (TKIs) have been found and can prevent VSMCs proliferation to attenuate vascular remodeling. Therefore, this review will describe recent research progress on the role of RTKs and their inhibitors in controlling VSMCs proliferation, which helps to better understand the function of VSMCs proliferation in cardiovascular events and is beneficial for the prevention and treatment of vascular disease.
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Affiliation(s)
- Yilin Xiong
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, 563000, China
- Department of Pharmacology, Key Laboratory of Basic Pharmacology of Guizhou Province and School of Pharmacy, Zunyi Medical University, No. 6 Xuefu West Road, Zunyi, 563000, Guizhou, China
| | - Yan Wang
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, 563000, China
- Department of Pharmacology, Key Laboratory of Basic Pharmacology of Guizhou Province and School of Pharmacy, Zunyi Medical University, No. 6 Xuefu West Road, Zunyi, 563000, Guizhou, China
| | - Tao Yang
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, 563000, China
- Department of Pharmacology, Key Laboratory of Basic Pharmacology of Guizhou Province and School of Pharmacy, Zunyi Medical University, No. 6 Xuefu West Road, Zunyi, 563000, Guizhou, China
| | - Yunmei Luo
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, 563000, China
- Department of Pharmacology, Key Laboratory of Basic Pharmacology of Guizhou Province and School of Pharmacy, Zunyi Medical University, No. 6 Xuefu West Road, Zunyi, 563000, Guizhou, China
| | - Shangfu Xu
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, 563000, China
- Department of Pharmacology, Key Laboratory of Basic Pharmacology of Guizhou Province and School of Pharmacy, Zunyi Medical University, No. 6 Xuefu West Road, Zunyi, 563000, Guizhou, China
| | - Lisheng Li
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, 563000, China.
- Department of Pharmacology, Key Laboratory of Basic Pharmacology of Guizhou Province and School of Pharmacy, Zunyi Medical University, No. 6 Xuefu West Road, Zunyi, 563000, Guizhou, China.
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Shinjo T, Onizuka S, Zaitsu Y, Ishikado A, Park K, Li Q, Yokomizo H, Zeze T, Sato K, St-Louis R, Fu J, I-Hsien W, Mizutani K, Hasturk H, Van Dyke TE, Nishimura F, King GL. Dysregulation of CXCL1 Expression and Neutrophil Recruitment in Insulin Resistance and Diabetes-Related Periodontitis in Male Mice. Diabetes 2023; 72:986-998. [PMID: 37058471 PMCID: PMC10281234 DOI: 10.2337/db22-1014] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Accepted: 04/05/2023] [Indexed: 04/15/2023]
Abstract
Insulin resistance and hyperglycemia are risk factors for periodontitis and poor wound healing in diabetes, which have been associated with selective loss of insulin activation of the PI3K/Akt pathway in the gingiva. This study showed that insulin resistance in the mouse gingiva due to selective deletion of smooth muscle and fibroblast insulin receptor (SMIRKO mice) or systemic metabolic changes induced by a high-fat diet (HFD) in HFD-fed mice exacerbated periodontitis-induced alveolar bone loss, preceded by delayed neutrophil and monocyte recruitment and impaired bacterial clearance compared with their respective controls. The immunocytokines, CXCL1, CXCL2, MCP-1, TNFα, IL-1β, and IL-17A, exhibited delayed maximal expression in the gingiva of male SMIRKO and HFD-fed mice compared with controls. Targeted overexpression of CXCL1 in the gingiva by adenovirus normalized neutrophil and monocyte recruitment and prevented bone loss in both mouse models of insulin resistance. Mechanistically, insulin enhanced bacterial lipopolysaccharide-induced CXCL1 production in mouse and human gingival fibroblasts (GFs), via Akt pathway and NF-κB activation, which were reduced in GFs from SMIRKO and HFD-fed mice. These results provided the first report that insulin signaling can enhance endotoxin-induced CXCL1 expression to modulate neutrophil recruitment, suggesting CXCL1 as a new therapeutic direction for periodontitis or wound healing in diabetes. ARTICLE HIGHLIGHTS The mechanism for the increased risks for periodontitis in the gingival tissues due to insulin resistance and diabetes is unclear. We investigated how insulin action in gingival fibroblasts modulates the progression of periodontitis in resistance and diabetes. Insulin upregulated the lipopolysaccharide-induced neutrophil chemoattractant, CXCL1, production in gingival fibroblasts via insulin receptors and Akt activation. Enhancing CXCL1 expression in the gingiva normalized diabetes and insulin resistance-induced delays in neutrophils recruitment and periodontitis. Targeting dysregulation of CXCL1 in fibroblasts is potentially therapeutic for periodontitis and may also improve wound healing in insulin resistance and diabetes.
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Affiliation(s)
- Takanori Shinjo
- Section of Vascular Cell Biology, Joslin Diabetes Center, Harvard Medical School, Boston, MA
- Section of Periodontology, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - Satoru Onizuka
- Section of Vascular Cell Biology, Joslin Diabetes Center, Harvard Medical School, Boston, MA
| | - Yumi Zaitsu
- Section of Vascular Cell Biology, Joslin Diabetes Center, Harvard Medical School, Boston, MA
| | - Atsushi Ishikado
- Section of Vascular Cell Biology, Joslin Diabetes Center, Harvard Medical School, Boston, MA
| | - Kyoungmin Park
- Section of Vascular Cell Biology, Joslin Diabetes Center, Harvard Medical School, Boston, MA
| | - Qian Li
- Section of Vascular Cell Biology, Joslin Diabetes Center, Harvard Medical School, Boston, MA
| | - Hisashi Yokomizo
- Section of Vascular Cell Biology, Joslin Diabetes Center, Harvard Medical School, Boston, MA
| | - Tatsuro Zeze
- Section of Periodontology, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - Kohei Sato
- Section of Periodontology, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - Ronald St-Louis
- Section of Vascular Cell Biology, Joslin Diabetes Center, Harvard Medical School, Boston, MA
| | - Jialin Fu
- Section of Vascular Cell Biology, Joslin Diabetes Center, Harvard Medical School, Boston, MA
| | - Wu I-Hsien
- Section of Vascular Cell Biology, Joslin Diabetes Center, Harvard Medical School, Boston, MA
| | - Koji Mizutani
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Hatice Hasturk
- Department of Applied Oral Science, The Forsyth Institute, Cambridge, MA
| | - Thomas E. Van Dyke
- Department of Applied Oral Science, The Forsyth Institute, Cambridge, MA
| | - Fusanori Nishimura
- Section of Periodontology, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - George L. King
- Section of Vascular Cell Biology, Joslin Diabetes Center, Harvard Medical School, Boston, MA
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9
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He C, Ye P, Zhang X, Esmaeili E, Li Y, Lü P, Cai C. The Role of TGF-β Signaling in Saphenous Vein Graft Failure after Peripheral Arterial Disease Bypass Surgery. Int J Mol Sci 2023; 24:10381. [PMID: 37373529 DOI: 10.3390/ijms241210381] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 06/11/2023] [Accepted: 06/16/2023] [Indexed: 06/29/2023] Open
Abstract
Saphenous vein bypass grafting is an effective technique used to treat peripheral arterial disease (PAD). However, restenosis is the major clinical challenge for the graft vessel among people with PAD postoperation. We hypothesize that there is a common culprit behind arterial occlusion and graft restenosis. To investigate this hypothesis, we found TGF-β, a gene specifically upregulated in PAD arteries, by bioinformatics analysis. TGF-β has a wide range of biological activities and plays an important role in vascular remodeling. We discuss the molecular pathway of TGF-β and elucidate its mechanism in vascular remodeling and intimal hyperplasia, including EMT, extracellular matrix deposition, and fibrosis, which are the important pathways contributing to stenosis. Additionally, we present a case report of a patient with graft restenosis linked to the TGF-β pathway. Finally, we discuss the potential applications of targeting the TGF-β pathway in the clinic to improve the long-term patency of vein grafts.
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Affiliation(s)
- Changhuai He
- Department of Vascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Pin Ye
- Department of Vascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Xuecheng Zhang
- Department of Vascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Elham Esmaeili
- Department of Vascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Yiqing Li
- Department of Vascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Ping Lü
- Department of Vascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Chuanqi Cai
- Department of Vascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
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10
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Fu Y, Xu L, Zhang H, Ding N, Zhang J, Ma S, Yang A, Hao Y, Gao Y, Jiang Y. Identification and Validation of Immune-Related Genes Diagnostic for Progression of Atherosclerosis and Diabetes. J Inflamm Res 2023; 16:505-521. [PMID: 36798871 PMCID: PMC9926990 DOI: 10.2147/jir.s393788] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Accepted: 01/18/2023] [Indexed: 02/11/2023] Open
Abstract
Background Atherosclerosis and type 2 diabetes mellitus contribute to a large part of cardiovascular events, but the underlying mechanism remains unclear. In this study, we focused on identifying the linking genes of the diagnostic biomarkers and effective therapeutic targets associated with these two diseases. Methods The transcriptomic datasets of atherosclerosis and type 2 diabetes mellitus were obtained from the GEO database. Differentially expressed genes analysis was performed by R studio software, and differential analysis including functional enrichment, therapeutic small molecular agents prediction, and protein-protein interaction analysis were applied to the common shared differentially expressed genes. Hub genes were identified and further validated using an independent dataset and clinical samples. Furthermore, we measured the expression correlations, immune cell infiltration, and diagnostic capability of the three key genes. Results We screened out 28 up-regulated and six down-regulated common shared differentially expressed genes. Functional enrichment analysis showed that cytokines and immune activation were involved in the development of these two diseases. Six small molecules with the highest absolute enrichment value were identified. Three critical genes (CD4, PLEK, and THY1) were further validated both in validation sets and clinical samples. The gene correlation analysis showed that CD4 was strongly positively correlated with PLEK, and ROC curves confirmed the good discriminatory capacity of CD4 and PLEK in two diseases. We have established the co-expression network between atherosclerosis lesions progressions and type 2 diabetes mellitus, and identified CD4 and PLEK as key genes in the two diseases, which may facilitate both development of diagnosis and therapeutic strategies.
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Affiliation(s)
- Yajuan Fu
- National Health Commission Key Laboratory of Metabolic Cardiovascular Diseases Research, Ningxia Medical University, Yinchuan, People’s Republic of China,Ningxia Key Laboratory of Vascular Injury and Repair Research, Ningxia Medical University, Yinchuan, People’s Republic of China
| | - Lingbo Xu
- National Health Commission Key Laboratory of Metabolic Cardiovascular Diseases Research, Ningxia Medical University, Yinchuan, People’s Republic of China,Ningxia Key Laboratory of Vascular Injury and Repair Research, Ningxia Medical University, Yinchuan, People’s Republic of China,School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, People’s Republic of China
| | - Hui Zhang
- National Health Commission Key Laboratory of Metabolic Cardiovascular Diseases Research, Ningxia Medical University, Yinchuan, People’s Republic of China,Ningxia Key Laboratory of Vascular Injury and Repair Research, Ningxia Medical University, Yinchuan, People’s Republic of China,School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, People’s Republic of China
| | - Ning Ding
- National Health Commission Key Laboratory of Metabolic Cardiovascular Diseases Research, Ningxia Medical University, Yinchuan, People’s Republic of China,Ningxia Key Laboratory of Vascular Injury and Repair Research, Ningxia Medical University, Yinchuan, People’s Republic of China,School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, People’s Republic of China
| | - Juan Zhang
- National Health Commission Key Laboratory of Metabolic Cardiovascular Diseases Research, Ningxia Medical University, Yinchuan, People’s Republic of China,Ningxia Key Laboratory of Vascular Injury and Repair Research, Ningxia Medical University, Yinchuan, People’s Republic of China,School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, People’s Republic of China
| | - Shengchao Ma
- National Health Commission Key Laboratory of Metabolic Cardiovascular Diseases Research, Ningxia Medical University, Yinchuan, People’s Republic of China,Ningxia Key Laboratory of Vascular Injury and Repair Research, Ningxia Medical University, Yinchuan, People’s Republic of China,School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, People’s Republic of China
| | - Anning Yang
- National Health Commission Key Laboratory of Metabolic Cardiovascular Diseases Research, Ningxia Medical University, Yinchuan, People’s Republic of China,Ningxia Key Laboratory of Vascular Injury and Repair Research, Ningxia Medical University, Yinchuan, People’s Republic of China,School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, People’s Republic of China
| | - Yinjv Hao
- National Health Commission Key Laboratory of Metabolic Cardiovascular Diseases Research, Ningxia Medical University, Yinchuan, People’s Republic of China,Ningxia Key Laboratory of Vascular Injury and Repair Research, Ningxia Medical University, Yinchuan, People’s Republic of China,School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, People’s Republic of China
| | - Yujing Gao
- National Health Commission Key Laboratory of Metabolic Cardiovascular Diseases Research, Ningxia Medical University, Yinchuan, People’s Republic of China,Ningxia Key Laboratory of Vascular Injury and Repair Research, Ningxia Medical University, Yinchuan, People’s Republic of China,Correspondence: Yujing Gao; Yideng Jiang, Email ;
| | - Yideng Jiang
- National Health Commission Key Laboratory of Metabolic Cardiovascular Diseases Research, Ningxia Medical University, Yinchuan, People’s Republic of China,Ningxia Key Laboratory of Vascular Injury and Repair Research, Ningxia Medical University, Yinchuan, People’s Republic of China,School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, People’s Republic of China
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11
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Déglise S, Bechelli C, Allagnat F. Vascular smooth muscle cells in intimal hyperplasia, an update. Front Physiol 2023; 13:1081881. [PMID: 36685215 PMCID: PMC9845604 DOI: 10.3389/fphys.2022.1081881] [Citation(s) in RCA: 24] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Accepted: 12/12/2022] [Indexed: 01/05/2023] Open
Abstract
Arterial occlusive disease is the leading cause of death in Western countries. Core contemporary therapies for this disease include angioplasties, stents, endarterectomies and bypass surgery. However, these treatments suffer from high failure rates due to re-occlusive vascular wall adaptations and restenosis. Restenosis following vascular surgery is largely due to intimal hyperplasia. Intimal hyperplasia develops in response to vessel injury, leading to inflammation, vascular smooth muscle cells dedifferentiation, migration, proliferation and secretion of extra-cellular matrix into the vessel's innermost layer or intima. In this review, we describe the current state of knowledge on the origin and mechanisms underlying the dysregulated proliferation of vascular smooth muscle cells in intimal hyperplasia, and we present the new avenues of research targeting VSMC phenotype and proliferation.
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Affiliation(s)
| | | | - Florent Allagnat
- Department of Vascular Surgery, Lausanne University Hospital, Lausanne, Switzerland
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12
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Insulin and IGF-1 elicit robust transcriptional regulation to modulate autophagy in astrocytes. Mol Metab 2022; 66:101647. [PMID: 36503893 PMCID: PMC9731889 DOI: 10.1016/j.molmet.2022.101647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 11/08/2022] [Accepted: 11/23/2022] [Indexed: 11/27/2022] Open
Abstract
OBJECTIVE Insulin is a principal metabolic hormone. It regulates a plethora of metabolic pathways in peripheral tissues. The highly homologous insulin-like growth factor 1 (IGF-1), on the other hand, is important for development and growth. Recent studies have shown that insulin and IGF-1 signaling plays fundamental roles in the brain. Loss of insulin or IGF-1 receptors in astrocytes leads to altered glucose handling, mitochondrial metabolism, neurovascular coupling, and behavioral abnormalities in mice. Here, we aim to investigate molecular mechanisms by which insulin and IGF-1 signaling regulates astrocyte functions. METHODS IR-flox and IRKO primary astrocytes were treated with 100 nM insulin or IGF-1 for 6 h, and their transcriptomes were analyzed. Astrocytes with either IR deletion, IGF1R deletion or both were used to examine receptor-dependent transcriptional regulations using qPCR. Additional immunoblotting and confocal imaging studies were performed to functionally validate pathways involved in protein homeostasis. RESULTS Using next-generation RNA sequencing, we show that insulin significantly regulates the expression of over 1,200 genes involved in multiple functional processes in primary astrocytes. Insulin-like growth factor 1 (IGF-1) triggers a similar robust transcriptional regulation in astrocytes. Thus, over 50% of the differentially expressed genes are regulated by both ligands. As expected, these commonly regulated genes are highly enriched in pathways involved in lipid and cholesterol biosynthesis. Additionally, insulin and IGF-1 induce the expression of genes involved in ribosomal biogenesis, while suppressing the expression of genes involved in autophagy, indicating a common role of insulin and IGF-1 on protein homeostasis in astrocytes. Insulin-dependent suppression of autophagy genes, including p62, Ulk1/2, and several Atg genes, is blunted only when both IR and IGF1R are deleted. CONCLUSIONS In summary, insulin and IGF-1 potently suppress autophagy in astrocytes through transcriptional regulation. Both IR and IGF1R can elicit ligand-dependent transcriptional suppression of autophagy. These results demonstrate an important role of astrocytic insulin/IGF-1 signaling on proteostasis. Impairment of this regulation in insulin resistance and diabetes may contribute to neurological complications related to diabetes.
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13
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Chen H, Wu A, Zeidel ML, Yu W. Smooth Muscle Insulin Receptor Deletion Causes Voiding Dysfunction: A Mechanism for Diabetic Bladder Dysfunction. Diabetes 2022; 71:2197-2208. [PMID: 35876633 PMCID: PMC9501730 DOI: 10.2337/db22-0233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/06/2022] [Accepted: 07/20/2022] [Indexed: 01/03/2023]
Abstract
Diabetic bladder dysfunction (DBD) is the most common complication in diabetes. Myogenic abnormalities are common in DBD; however, the underlying mechanisms leading to these remain unclear. To understand the importance of smooth muscle insulin receptor (IR)-mediated signaling in the pathogenesis of DBD, we conditionally deleted it to achieve either heterozygous (SMIR+/-) or homozygous (SMIR-/-) deletion in smooth muscle cells. Despite impaired glucose and insulin tolerance seen with SMIR-/- mice, both SMIR+/- and SMIR-/- mice exhibited normal blood glucose and plasma insulin levels. Interestingly, these mice had abnormal voiding phenotypes, that included urinary frequency and small voids, and bladder smooth muscle (BSM) had significantly diminished contraction force. Morphology revealed a dilated bladder with thinner BSM layer, and BSM bundles were disorganized with penetrating interstitial tissue. Deletion of IR elevated FoxO and decreased mTOR protein expression, which further decreased the expression of Chrm3, P2x1, Sm22, and Cav1.2, crucial functional proteins for BSM contraction. Furthermore, we determined the expression of adiponectin in BSM, and deletion of IR in BSM inhibited adiponectin-mediated signaling. In summary, disruption of IR-mediated signaling in BSM caused abnormalities in proliferation and differentiation, leading to diminished BSM contractility and a voiding dysfunction phenotype that recapitulates human DBD.
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Affiliation(s)
| | | | | | - Weiqun Yu
- Department of Medicine, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA
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14
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Bornfeldt KE. The Remnant Lipoprotein Hypothesis of Diabetes-Associated Cardiovascular Disease. Arterioscler Thromb Vasc Biol 2022; 42:819-830. [PMID: 35616031 DOI: 10.1161/atvbaha.122.317163] [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] [Indexed: 12/25/2022]
Abstract
Both type 1 and type 2 diabetes are associated with an increased risk of atherosclerotic cardiovascular disease (CVD). Research based on human-first or bedside-to-bench approaches has provided new insights into likely mechanisms behind this increased risk. Although both forms of diabetes are associated with hyperglycemia, it is becoming increasingly clear that altered lipoprotein metabolism also plays a critical role in predicting CVD risk in people with diabetes. This review examines recent findings indicating that increased levels of circulating remnant lipoproteins could be a missing link between diabetes and CVD. Although CVD risk associated with diabetes is clearly multifactorial in nature, these findings suggest that we should increase efforts in evaluating whether remnant lipoproteins or the proteins that govern their metabolism are biomarkers of incident CVD in people living with diabetes and whether reducing remnant lipoproteins will prevent the increased CVD risk associated with diabetes.
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Affiliation(s)
- Karin E Bornfeldt
- Department of Medicine, Division of Metabolism, Endocrinology and Nutrition and Department of Laboratory Medicine and Pathology, University of Washington Medicine Diabetes Institute, Seattle
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15
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Hu ZK, Niu JL, Lin JJ, Guo Y, Dong LH. Proteomics of restenosis model in LDLR-deficient hamsters coupled with the proliferative rat vascular smooth muscle cells reveals a new mechanism of vascular remodeling diseases. J Proteomics 2022; 264:104634. [PMID: 35661764 DOI: 10.1016/j.jprot.2022.104634] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 05/25/2022] [Accepted: 05/26/2022] [Indexed: 12/21/2022]
Abstract
A major pathological mechanism involved in vascular remodeling diseases is the proliferation and migration of vascular smooth muscle cells. The lipid distribution of golden hamsters is similar to that of humans, which makes them an excellent study model for studying the pathogenesis and molecular characteristics of vascular remodeling diseases. We performed proteomic analysis on Sprague Dawley rat VSMCs (rVSMCs) and restenosis hamsters with low-density lipoprotein receptor (LDLR) deficiency as part of this study. We have also performed the enrichment analysis of differentially modified proteins in regards to Gene Ontology, Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway, and protein domain. 1070 differentially abundant proteins were assessed in rVSMCs before and after platelet-derived growth factor-BB (PDGF-BB) stimulation. Specifically, 1246 proteins displayed significant differences in the restenosis model in LDLR-deficient hamsters. An analysis of crosstalk between LDLR+/- hamsters artery restenosis and proliferating rVSMCs revealed 130 differentially expressed proteins, including 67 up-regulated proteins and 63 downregulated proteins. Enrichment analysis with KEGG showed differential proteins to be mainly concentrated in metabolic pathways. There are numerous differentially abundant proteins but particularly two proteins (phosphofructokinase 1 of liver type and lactate dehydrogenase A) were found to be up-regulated by PDGF-BB stimulation of rVSMCs and in a restenosis model of hamsters with LDLR+/- expression. SIGNIFICANCE: Based on bioinformatics, we have found glycolysis pathway plays an important role in both the LDLR+/- hamsters restenosis model and the proliferation of rVSMCs. Some key glycolysis enzymes may likely be developed either as new biomarkers or drug targets for vascular remodeling diseases.
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Affiliation(s)
- Zhao-Kun Hu
- Department of Biochemistry and Molecular Biology, College of Basic Medicine, Cardiovascular Medical Science Center, Key Laboratory of Medical Biotechnology of Hebei Province, The Key Laboratory of Neural and Vascular Biology, Ministry of Education, Hebei Medical University, Shijiazhuang, 050017, China
| | - Jiang-Ling Niu
- Department of Biochemistry and Molecular Biology, College of Basic Medicine, Cardiovascular Medical Science Center, Key Laboratory of Medical Biotechnology of Hebei Province, The Key Laboratory of Neural and Vascular Biology, Ministry of Education, Hebei Medical University, Shijiazhuang, 050017, China
| | - Jia-Jie Lin
- Department of Biochemistry and Molecular Biology, College of Basic Medicine, Cardiovascular Medical Science Center, Key Laboratory of Medical Biotechnology of Hebei Province, The Key Laboratory of Neural and Vascular Biology, Ministry of Education, Hebei Medical University, Shijiazhuang, 050017, China
| | - Yu Guo
- Department of Biochemistry and Molecular Biology, College of Basic Medicine, Cardiovascular Medical Science Center, Key Laboratory of Medical Biotechnology of Hebei Province, The Key Laboratory of Neural and Vascular Biology, Ministry of Education, Hebei Medical University, Shijiazhuang, 050017, China
| | - Li-Hua Dong
- Department of Biochemistry and Molecular Biology, College of Basic Medicine, Cardiovascular Medical Science Center, Key Laboratory of Medical Biotechnology of Hebei Province, The Key Laboratory of Neural and Vascular Biology, Ministry of Education, Hebei Medical University, Shijiazhuang, 050017, China.
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16
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Soliman GA, Schooling CM. Insulin Receptor Genetic Variants Causal Association with Type 2 Diabetes: A Mendelian Randomization Study. Curr Dev Nutr 2022; 6:nzac044. [PMID: 35611355 PMCID: PMC9121804 DOI: 10.1093/cdn/nzac044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 02/18/2022] [Accepted: 03/23/2022] [Indexed: 11/26/2022] Open
Abstract
Background Type 2 diabetes (T2D) is a prevalent chronic disease associated with several comorbidities. Objectives This study investigated whether the risk of T2D varied with genetically predicted insulin (INS), insulin receptor (INS-R), or insulin-like growth factor 1 receptor (IGF-1R) using genetic variants in a Mendelian randomization (MR) study. Methods A 2-sample MR study was conducted using summary statistics from 2 genome-wide association studies (GWASs). Genetic predictors of the exposures (INS, INS-R, and IGF-1R) were obtained from a publicly available proteomics GWAS of the INTERVAL randomized controlled trial of blood donation in the United Kingdom. For T2D, the study leveraged the DIAbetes Meta-ANalysis of Trans-Ethnic association studies (DIAMANTE) consortium. The estimated associations of INS, INS-R, and IGF-1R proteins with T2D were based on independent single nucleotide polymorphisms (SNPs) strongly (P < 5 × 10-6) predicting each exposure. These SNPs were applied to publicly available genetic associations with T2D from the DIAMANTE case (n = 74,124) and control (n = 824,006) study of people of European descent. SNP-specific Wald estimates were meta-analyzed using inverse variance weighting with multiplicative random effects. Sensitivity analysis was conducted using the weighted median (WM) and MR-Egger. Results INS-R (based on 13 SNPs) was associated with a lower risk of T2D (OR: 0.95 per effect size; 95% CI: 0.92, 0.98; P = 0.001), with similar estimates from the WM and MR-Egger. Insulin (8 SNPs) and IGF-1R (10 SNPs) were not associated with T2D. However, 1 of the SNPs for INS-R was from the ABO blood group gene. Conclusions This study is consistent with a causally protective association of the INS-R with T2D. INS-R in RBCs regulates glycolysis and thus may affect their functionality and integrity. However, a pleiotropic effect via the blood group ABO gene cannot be excluded. The INS-R may be a target for intervention by repurposing existing therapeutics or otherwise to reduce the risk of T2D.
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Affiliation(s)
- Ghada A Soliman
- Department of Environmental, Occupational, and Geospatial Health Sciences, The City University of New York, Graduate School of Public Health, and Health Policy, New York, NY, USA
| | - C Mary Schooling
- Department of Environmental, Occupational, and Geospatial Health Sciences, The City University of New York, Graduate School of Public Health, and Health Policy, New York, NY, USA
- School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
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17
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Fu J, Shinjo T, Li Q, St-Louis R, Park K, Yu MG, Yokomizo H, Simao F, Huang Q, Wu IH, King GL. Regenerating glomerular metabolism and function by podocyte pyruvate kinase M2 in diabetic nephropathy. JCI Insight 2022; 7:155260. [PMID: 35133981 PMCID: PMC8983139 DOI: 10.1172/jci.insight.155260] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Accepted: 01/26/2022] [Indexed: 11/17/2022] Open
Abstract
Diabetic nephropathy (DN) arises from systemic and local changes in glucose metabolism and hemodynamics. We have reported that many glycolytic and mitochondrial enzymes, such as pyruvate kinase M2 (PKM2), were elevated in renal glomeruli of DN-protected type 1 and type 2 diabetic patients. Here, mice with PKM2-specific overexpression in podocytes (PPKM2Tg) were generated to uncover its renal protective function as potential therapeutic target, which prevented elevated albumin-creatinine ratio (ACR), mesangial expansion, basement membrane thickness and podocyte foot process effacement after 7-months of STZ-induced diabetes. Further, diabetes-induced impairment of glycolytic rate and mitochondrial function were normalized in diabetic PPKM2Tg glomeruli, in concordance with elevated Ppargc1a and Vegf expressions. Restored VEGF expression improved glomerular maximal mitochondrial function in diabetic PPKM2Tg and WT mice. Elevated VEGF levels were observed in the glomeruli of DN-protected patients with chronic type 1 diabetes, and clinically correlated with estimated GFR, but not glycemic control. Mechanistically, the preservations of mitochondrial function and VEGF expression were dependent on tetrameric structure and enzymatic activities of PKM2 in podocyte. These findings demonstrated that PKM2 structure and enzymatic activation in podocytes can preserve entire glomerular mitochondrial function against toxicity of hyperglycemia via paracrine factors such as VEGF and prevent DN progression.
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Affiliation(s)
- Jialin Fu
- Dianne Nunnally Hoppes Laboratory for Diabetes Complications, Joslin Diabetes Center, Harvard Medical School, Boston, United States of America
| | - Takanori Shinjo
- Dianne Nunnally Hoppes Laboratory for Diabetes Complications, Joslin Diabetes Center, Harvard Medical School, Boston, United States of America
| | - Qian Li
- Dianne Nunnally Hoppes Laboratory for Diabetes Complications, Joslin Diabetes Center, Harvard Medical School, Boston, United States of America
| | - Ronald St-Louis
- Dianne Nunnally Hoppes Laboratory for Diabetes Complications, Joslin Diabetes Center, Harvard Medical School, Boston, United States of America
| | - Kyoungmin Park
- Dianne Nunnally Hoppes Laboratory for Diabetes Complications, Joslin Diabetes Center, Harvard Medical School, Boston, United States of America
| | - Marc G Yu
- Dianne Nunnally Hoppes Laboratory for Diabetes Complications, Joslin Diabetes Center, Harvard Medical School, Boston, United States of America
| | - Hisashi Yokomizo
- Dianne Nunnally Hoppes Laboratory for Diabetes Complications, Joslin Diabetes Center, Harvard Medical School, Boston, United States of America
| | - Fabricio Simao
- Dianne Nunnally Hoppes Laboratory for Diabetes Complications, Joslin Diabetes Center, Harvard Medical School, Boston, United States of America
| | - Qian Huang
- Dianne Nunnally Hoppes Laboratory for Diabetes Complications, Joslin Diabetes Center, Harvard Medical School, Boston, United States of America
| | - I-Hsien Wu
- Dianne Nunnally Hoppes Laboratory for Diabetes Complications, Joslin Diabetes Center, Harvard Medical School, Boston, United States of America
| | - George L King
- Dianne Nunnally Hoppes Laboratory for Diabetes Complications, Joslin Diabetes Center, Harvard Medical School, Boston, United States of America
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18
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Zhang BF, Wu ZH, Deng J, Jin HJ, Chen WB, Zhang S, Liu XJ, Wang WT, Zheng XT. M 6A methylation-mediated elevation of SM22α inhibits the proliferation and migration of vascular smooth muscle cells and ameliorates intimal hyperplasia in type 2 diabetes mellitus. Biol Chem 2021; 403:317-329. [PMID: 34882999 DOI: 10.1515/hsz-2021-0296] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Accepted: 11/18/2021] [Indexed: 01/02/2023]
Abstract
Abnormal proliferation of vascular smooth muscle cells (VSMCs) induced by insulin resistance facilitates intimal hyperplasia of type 2 diabetes mellitus (T2DM) and N6-methyladenosine (m6A) methylation modification mediates the VSMC proliferation. This study aimed to reveal the m6A methylation modification regulatory mechanism. In this study, m6A demethylase FTO was elevated in insulin-treated VSMCs and T2DM mice with intimal injury. Functionally, FTO knockdown elevated m6A methylation level and further restrained VSMC proliferation and migration induced by insulin. Mechanistically, FTO knockdown elevated Smooth muscle 22 alpha (SM22α) expression and m6A-binding protein IGF2BP2 enhanced SM22α mRNA stability by recognizing and binding to m6A methylation modified mRNA. In vivo studies confirmed that the elevated m6A modification level of SM22α mRNA mitigated intimal hyperplasia in T2DM mice. Conclusively, m6A methylation-mediated elevation of SM22α restrained VSMC proliferation and migration and ameliorated intimal hyperplasia in T2DM.
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Affiliation(s)
- Bao-Fu Zhang
- Department of Vascular Surgery, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou 325015, China
| | - Zi-Heng Wu
- Department of Vascular Surgery, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, China
| | - Jie Deng
- Department of Vascular Surgery, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou 325015, China
| | - Hao-Jie Jin
- Department of Vascular Surgery, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou 325015, China
| | - Wei-Biao Chen
- Department of Vascular Surgery, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou 325015, China
| | - Sai Zhang
- Institute of Ischemia-Reperfusion Injury, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Xiu-Jie Liu
- Institute of Ischemia-Reperfusion Injury, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Wan-Tie Wang
- Institute of Ischemia-Reperfusion Injury, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Xiang-Tao Zheng
- Department of Vascular Surgery, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou 325015, China
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19
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Warmke N, Platt F, Bruns AF, Ozber CH, Haywood NJ, Abudushalamu Y, Slater C, Palin V, Sukumar P, Wheatcroft SB, Yuldasheva NY, Kearney MT, Griffin KJ, Cubbon RM. Pericyte Insulin Receptors Modulate Retinal Vascular Remodeling and Endothelial Angiopoietin Signaling. Endocrinology 2021; 162:bqab182. [PMID: 34460911 PMCID: PMC8462386 DOI: 10.1210/endocr/bqab182] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Indexed: 12/15/2022]
Abstract
Pericytes regulate vascular development, stability, and quiescence; their dysfunction contributes to diabetic retinopathy. To explore the role of insulin receptors in pericyte biology, we created pericyte insulin receptor knockout mice (PIRKO) by crossing PDGFRβ-Cre mice with insulin receptor (Insr) floxed mice. Their neonatal retinal vasculature exhibited perivenous hypervascularity with venular dilatation, plus increased angiogenic sprouting in superficial and deep layers. Pericyte coverage of capillaries was unaltered in perivenous and periarterial plexi, and no differences in vascular regression or endothelial proliferation were apparent. Isolated brain pericytes from PIRKO had decreased angiopoietin-1 mRNA, whereas retinal and lung angiopoietin-2 mRNA was increased. Endothelial phospho-Tie2 staining was diminished and FoxO1 was more frequently nuclear localized in the perivenous plexus of PIRKO, in keeping with reduced angiopoietin-Tie2 signaling. Silencing of Insr in human brain pericytes led to reduced insulin-stimulated angiopoietin-1 secretion, and conditioned media from these cells was less able to induce Tie2 phosphorylation in human endothelial cells. Hence, insulin signaling in pericytes promotes angiopoietin-1 secretion and endothelial Tie2 signaling and perturbation of this leads to excessive vascular sprouting and venous plexus abnormalities. This phenotype mimics elements of diabetic retinopathy, and future work should evaluate pericyte insulin signaling in this disease.
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Affiliation(s)
- Nele Warmke
- Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, UK
- Max-Delbrück-Centrum für Molekulare Medizin (MDC), Berlin, Germany
| | - Fiona Platt
- Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, UK
| | - Alexander F Bruns
- Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, UK
| | - Claire H Ozber
- Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, UK
| | - Natalie J Haywood
- Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, UK
| | - Yilizila Abudushalamu
- Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, UK
| | - Charles Slater
- Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, UK
| | - Victoria Palin
- Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, UK
| | - Piruthivi Sukumar
- Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, UK
| | - Stephen B Wheatcroft
- Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, UK
| | - Nadira Y Yuldasheva
- Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, UK
| | - Mark T Kearney
- Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, UK
| | - Kathryn J Griffin
- Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, UK
| | - Richard M Cubbon
- Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, UK
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20
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Emerging Importance of Tyrosine Kinase Inhibitors against Cancer: Quo Vadis to Cure? Int J Mol Sci 2021; 22:ijms222111659. [PMID: 34769090 PMCID: PMC8584061 DOI: 10.3390/ijms222111659] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2021] [Revised: 10/24/2021] [Accepted: 10/24/2021] [Indexed: 12/12/2022] Open
Abstract
GLOBOCAN 2020 estimated more than 19.3 million new cases, and about 10 million patients were deceased from cancer in 2020. Clinical manifestations showed that several growth factor receptors consisting of transmembrane and cytoplasmic tyrosine kinase (TK) domains play a vital role in cancer progression. Receptor tyrosine kinases (RTKs) are crucial intermediaries of the several cellular pathways and carcinogenesis that directly affect the prognosis and survival of higher tumor grade patients. Tyrosine kinase inhibitors (TKIs) are efficacious drugs for targeted therapy of various cancers. Therefore, RTKs have become a promising therapeutic target to cure cancer. A recent report shows that TKIs are vital mediators of signal transduction and cancer cell proliferation, angiogenesis, and apoptosis. In this review, we discuss the structure and function of RTKs to explore their prime role in cancer therapy. Various TKIs have been developed to date that contribute a lot to treating several types of cancer. These TKI based anticancer drug molecules are also discussed in detail, incorporating their therapeutic efficacy, mechanism of action, and side effects. Additionally, this article focuses on TKIs which are running in the clinical trial and pre-clinical studies. Further, to gain insight into the pathophysiological mechanism of TKIs, we also reviewed the impact of RTK resistance on TKI clinical drugs along with their mechanistic acquired resistance in different cancer types.
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21
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Alexandrescu DM, Mitu O, Costache II, Macovei L, Mitu I, Alexandrescu A, Georgescu CA. Risk factors associated with intra-stent restenosis after percutaneous coronary intervention. Exp Ther Med 2021; 22:1141. [PMID: 34504587 PMCID: PMC8394103 DOI: 10.3892/etm.2021.10575] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Accepted: 06/23/2021] [Indexed: 12/20/2022] Open
Abstract
The present study aimed to explore the correlations between clinical, biological, imagistic and procedural factors with the risk of intra-stent restenosis (ISR) in coronary artery disease (CAD) patients after percutaneous coronary intervention (PCI). An observational cross-sectional study was conducted in a high-volume PCI center over a period of 2 years. A total of 235 consecutive patients diagnosed with angina or acute coronary syndrome treated by PCI were included in the study. Diagnosis of ISR was documented by coronary angiography in patients with suggestive coronary symptoms and ischemic changes in non-invasive or invasive paraclinical investigations. Thus, they were assigned to two groups: With or without ISR. All patients underwent clinical and laboratory examination, providing clinical and paraclinical variables that could be considered risk factors for ISR. Current smokers [risk ratio (RR)=1.63; 95% confidence interval (95% CI): 1.25-2.13], arterial hypertension (RR=1.86; 95% CI: 1.41-2.45), diabetes (RR=1.83; 95% CI: 1.42-2.36), high C-reactive protein (CRP) levels (RR=1.44; 95% CI: 0.93-2.24), chronic kidney disease (CKD) (RR=1.90; 95% CI: 1.53-2.36) and thrombolysis in myocardial infarction (TIMI) score were found to have a significant role in estimating the risk for ISR. Moreover, the ISR group (119 patients) presented with a lower stent inflation pressure when compared to the control group (116 patients) (14.47 vs. 16.14 mmHg, P=0.004). An increased mean stent diameter used for PCI was not associated with a high ISR incidence (P=0.810) as well as complex coronary treated lesions with longer stents (mean length of 24.98 mm in patients without ISR vs. 25.22 mm in patients with ISR; P=0.311). There was an estimated two times higher risk (RR=2.13; 95% CI: 1.17-3.88) concerning multi-stenting and restenosis degree >70%. To conclude, smoking, hypertension, diabetes mellitus, high CRP levels, CKD, TIMI score, stent type, low pressure for stent implantation and multi-stenting were found to be associated with ISR in patients following PCI. Therefore, a close follow-up should be targeted in such patients.
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Affiliation(s)
- Dan-Mihai Alexandrescu
- 1 Medical Department, 'Grigore T. Popa' University of Medicine and Pharmacy, 700115 Iasi, Romania.,Department of Cardiology-Internal Medicine, Emergency County Hospital, 610136 Piatra Neamt, Romania
| | - Ovidiu Mitu
- 1 Medical Department, 'Grigore T. Popa' University of Medicine and Pharmacy, 700115 Iasi, Romania
| | - Irina Iuliana Costache
- 1 Medical Department, 'Grigore T. Popa' University of Medicine and Pharmacy, 700115 Iasi, Romania
| | - Liviu Macovei
- 1 Medical Department, 'Grigore T. Popa' University of Medicine and Pharmacy, 700115 Iasi, Romania
| | - Ivona Mitu
- Department of Morpho-Functional Sciences II, 'Grigore T. Popa' University of Medicine and Pharmacy, 700115 Iasi, Romania
| | - Anca Alexandrescu
- Department of Cardiology-Internal Medicine, Emergency County Hospital, 610136 Piatra Neamt, Romania
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22
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Eckel RH, Bornfeldt KE, Goldberg IJ. Cardiovascular disease in diabetes, beyond glucose. Cell Metab 2021; 33:1519-1545. [PMID: 34289375 PMCID: PMC8411849 DOI: 10.1016/j.cmet.2021.07.001] [Citation(s) in RCA: 84] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 05/21/2021] [Accepted: 07/01/2021] [Indexed: 02/06/2023]
Abstract
Despite the decades-old knowledge that diabetes mellitus is a major risk factor for cardiovascular disease, the reasons for this association are only partially understood. While this association is true for both type 1 and type 2 diabetes, different pathophysiological processes may be responsible. Lipids and other risk factors are indeed important, whereas the role of glucose is less clear. This lack of clarity stems from clinical trials that do not unambiguously show that intensive glycemic control reduces cardiovascular events. Animal models have provided mechanisms that link diabetes to increased atherosclerosis, and evidence consistent with the importance of factors beyond hyperglycemia has emerged. We review clinical, pathological, and animal studies exploring the pathogenesis of atherosclerosis in humans living with diabetes and in mouse models of diabetes. An increased effort to identify risk factors beyond glucose is now needed to prevent the increased cardiovascular disease risk associated with diabetes.
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Affiliation(s)
- Robert H Eckel
- Divisions of Endocrinology, Metabolism and Diabetes, and Cardiology, University of Colorado School of Medicine, Anschutz Medical Campus, Aurora, CO, USA.
| | - Karin E Bornfeldt
- Department of Medicine, Division of Metabolism, Endocrinology and Nutrition, and Department of Laboratory Medicine and Pathology, University of Washington Medicine Diabetes Institute, University of Washington, Seattle, WA, USA
| | - Ira J Goldberg
- Division of Endocrinology, Diabetes and Metabolism, NYU Grossman School of Medicine, New York, NY, USA
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23
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White MF, Kahn CR. Insulin action at a molecular level - 100 years of progress. Mol Metab 2021; 52:101304. [PMID: 34274528 PMCID: PMC8551477 DOI: 10.1016/j.molmet.2021.101304] [Citation(s) in RCA: 94] [Impact Index Per Article: 31.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 07/07/2021] [Accepted: 07/13/2021] [Indexed: 12/15/2022] Open
Abstract
The discovery of insulin 100 years ago and its application to the treatment of human disease in the years since have marked a major turning point in the history of medicine. The availability of purified insulin allowed for the establishment of its physiological role in the regulation of blood glucose and ketones, the determination of its amino acid sequence, and the solving of its structure. Over the last 50 years, the function of insulin has been applied into the discovery of the insulin receptor and its signaling cascade to reveal the role of impaired insulin signaling-or resistance-in the progression of type 2 diabetes. It has also become clear that insulin signaling can impact not only classical insulin-sensitive tissues, but all tissues of the body, and that in many of these tissues the insulin signaling cascade regulates unexpected physiological functions. Despite these remarkable advances, much remains to be learned about both insulin signaling and how to use this molecular knowledge to advance the treatment of type 2 diabetes and other insulin-resistant states.
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Affiliation(s)
- Morris F White
- Boston Children's Hospital and Harvard Medical School, Boston, MA, 02215, USA.
| | - C Ronald Kahn
- Joslin Diabetes Center, Harvard Medical School, Boston, MA, 02215, USA.
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24
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Mori Y, Gonzalez Medina M, Liu Z, Guo J, Dingwell LS, Chiang S, Kahn CR, Husain M, Giacca A. Roles of vascular endothelial and smooth muscle cells in the vasculoprotective effect of insulin in a mouse model of restenosis. Diab Vasc Dis Res 2021; 18:14791641211027324. [PMID: 34190643 PMCID: PMC8482728 DOI: 10.1177/14791641211027324] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Insulin exerts vasculoprotective effects on endothelial cells (ECs) and growth-promoting effects on vascular smooth muscle cells (SMCs) in vitro, and suppresses neointimal growth in vivo. Here we determined the role of ECs and SMCs in the effect of insulin on neointimal growth. METHODS Mice with transgene CreERT2 under the control of EC-specific Tie2 (Tie2-Cre) or SMC-specific smooth muscle myosin heavy chain promoter/enhancer (SMMHC-Cre) or littermate controls were crossbred with mice carrying a loxP-flanked insulin receptor (IR) gene. After CreERT2-loxP-mediated recombination was induced by tamoxifen injection, mice received insulin pellet or sham (control) implantation, and underwent femoral artery wire injury. Femoral arteries were collected for morphological analysis 28 days after wire injury. RESULTS Tamoxifen-treated Tie2-Cre+ mice showed lower IR expression in ECs, but not in SMCs, than Tie2-Cre- mice. Insulin treatment reduced neointimal area after arterial injury in Tie2-Cre- mice, but had no effect in Tie2-Cre+ mice. Tamoxifen-treated SMMHC-Cre+ mice showed lower IR expression in SMCs, but not in ECs, than SMMHC-Cre- mice. Insulin treatment reduced neointimal area in SMMHC-Cre- mice, whereas unexpectedly, it failed to inhibit neointima formation in SMMHC-Cre+ mice. CONCLUSION Insulin action in both ECs and SMCs is required for the "anti-restenotic" effect of insulin in vivo.
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MESH Headings
- Animals
- Disease Models, Animal
- Drug Implants
- Endothelial Cells/drug effects
- Endothelial Cells/metabolism
- Endothelial Cells/pathology
- Endothelium, Vascular/drug effects
- Endothelium, Vascular/injuries
- Endothelium, Vascular/metabolism
- Endothelium, Vascular/pathology
- Femoral Artery/drug effects
- Femoral Artery/injuries
- Femoral Artery/metabolism
- Femoral Artery/pathology
- Hypoglycemic Agents/administration & dosage
- Insulin/administration & dosage
- Male
- Mice, Knockout
- Muscle, Smooth, Vascular/drug effects
- Muscle, Smooth, Vascular/injuries
- Muscle, Smooth, Vascular/metabolism
- Muscle, Smooth, Vascular/pathology
- Myocytes, Smooth Muscle/drug effects
- Myocytes, Smooth Muscle/metabolism
- Myocytes, Smooth Muscle/pathology
- Neointima
- Receptor, Insulin/agonists
- Receptor, Insulin/genetics
- Receptor, Insulin/metabolism
- Vascular System Injuries/drug therapy
- Vascular System Injuries/metabolism
- Vascular System Injuries/pathology
- Mice
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Affiliation(s)
- Yusaku Mori
- Department of Physiology, Faculty of Medicine, University of Toronto, Toronto, ON, Canada
- Division of Diabetes, Metabolism, and Endocrinology, Anti-Glycation Research Section, Department of Medicine, Showa University School of Medicine, Shinagawa, Tokyo, Japan
| | - Marel Gonzalez Medina
- Department of Physiology, Faculty of Medicine, University of Toronto, Toronto, ON, Canada
| | - Zhiwei Liu
- Department of Physiology, Faculty of Medicine, University of Toronto, Toronto, ON, Canada
| | - June Guo
- Department of Physiology, Faculty of Medicine, University of Toronto, Toronto, ON, Canada
| | - Luke S Dingwell
- Institute of Medical Science, Faculty of Medicine, University of Toronto, Toronto, ON, Canada
| | - Simon Chiang
- Department of Physiology, Faculty of Medicine, University of Toronto, Toronto, ON, Canada
| | | | - Mansoor Husain
- Department of Physiology, Faculty of Medicine, University of Toronto, Toronto, ON, Canada
- Institute of Medical Science, Faculty of Medicine, University of Toronto, Toronto, ON, Canada
- Department of Medicine, Faculty of Medicine, University of Toronto, Toronto, ON, Canada
- Department of Laboratory Medicine and Pathobiology, Faculty of Medicine, University of Toronto, Toronto, ON, Canada
| | - Adria Giacca
- Department of Physiology, Faculty of Medicine, University of Toronto, Toronto, ON, Canada
- Institute of Medical Science, Faculty of Medicine, University of Toronto, Toronto, ON, Canada
- Department of Medicine, Faculty of Medicine, University of Toronto, Toronto, ON, Canada
- Banting and Best Diabetes Centre, University of Toronto, Toronto, ON, Canada
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25
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Fu J, Yu MG, Li Q, Park K, King GL. Insulin's actions on vascular tissues: Physiological effects and pathophysiological contributions to vascular complications of diabetes. Mol Metab 2021; 52:101236. [PMID: 33878400 PMCID: PMC8513152 DOI: 10.1016/j.molmet.2021.101236] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 04/07/2021] [Accepted: 04/12/2021] [Indexed: 12/12/2022] Open
Abstract
Background Insulin has been demonstrated to exert direct and indirect effects on vascular tissues. Its actions in vascular cells are mediated by two major pathways: the insulin receptor substrate 1/2-phosphoinositide-3 kinase/Akt (IRS1/2/PI3K/Akt) pathway and the Src/mitogen-activated protein kinase (MAPK) pathway, both of which contribute to the expression and distribution of metabolites, hormones, and cytokines. Scope of review In this review, we summarize the current understanding of insulin's physiological and pathophysiological actions and associated signaling pathways in vascular cells, mainly in endothelial cells (EC) and vascular smooth muscle cells (VSMC), and how these processes lead to selective insulin resistance. We also describe insulin's potential new signaling and biological effects derived from animal studies and cultured capillary and arterial EC, VSMC, and pericytes. We will not provide a detailed discussion of insulin's effects on the myocardium, insulin's structure, or its signaling pathways' various steps, since other articles in this issue discuss these areas in depth. Major conclusions Insulin mediates many important functions on vascular cells via its receptors and signaling cascades. Its direct actions on EC and VSMC are important for transporting and communicating nutrients, cytokines, hormones, and other signaling molecules. These vascular actions are also important for regulating systemic fuel metabolism and energetics. Inhibiting or enhancing these pathways leads to selective insulin resistance, exacerbating the development of endothelial dysfunction, atherosclerosis, restenosis, poor wound healing, and even myocardial dysfunction. Targeted therapies to improve selective insulin resistance in EC and VSMC are thus needed to specifically mitigate these pathological processes. Insulin's actions in vascular cells have a significant influence on systemic metabolism. Insulin exerts its vascular effects through its receptors and signaling cascades. Inhibition or enhancement of different insulin signaling leads to selective insulin resistance. Loss of insulin's actions causes endothelial dysfunction and vascular complications in diabetes.
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Affiliation(s)
- Jialin Fu
- Dianne Nunnally Hoppes Laboratory for Diabetes Complications, Section of Vascular Cell Biology, Joslin Diabetes Center, Harvard Medical School, Boston, MA, 02215, USA
| | - Marc Gregory Yu
- Dianne Nunnally Hoppes Laboratory for Diabetes Complications, Section of Vascular Cell Biology, Joslin Diabetes Center, Harvard Medical School, Boston, MA, 02215, USA
| | - Qian Li
- Dianne Nunnally Hoppes Laboratory for Diabetes Complications, Section of Vascular Cell Biology, Joslin Diabetes Center, Harvard Medical School, Boston, MA, 02215, USA
| | - Kyoungmin Park
- Dianne Nunnally Hoppes Laboratory for Diabetes Complications, Section of Vascular Cell Biology, Joslin Diabetes Center, Harvard Medical School, Boston, MA, 02215, USA
| | - George L King
- Dianne Nunnally Hoppes Laboratory for Diabetes Complications, Section of Vascular Cell Biology, Joslin Diabetes Center, Harvard Medical School, Boston, MA, 02215, USA.
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26
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Scalia P, Giordano A, Martini C, Williams SJ. Isoform- and Paralog-Switching in IR-Signaling: When Diabetes Opens the Gates to Cancer. Biomolecules 2020; 10:biom10121617. [PMID: 33266015 PMCID: PMC7761347 DOI: 10.3390/biom10121617] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 11/21/2020] [Accepted: 11/23/2020] [Indexed: 12/12/2022] Open
Abstract
Insulin receptor (IR) and IR-related signaling defects have been shown to trigger insulin-resistance in insulin-dependent cells and ultimately to give rise to type 2 diabetes in mammalian organisms. IR expression is ubiquitous in mammalian tissues, and its over-expression is also a common finding in cancerous cells. This latter finding has been shown to associate with both a relative and absolute increase in IR isoform-A (IR-A) expression, missing 12 aa in its EC subunit corresponding to exon 11. Since IR-A is a high-affinity transducer of Insulin-like Growth Factor-II (IGF-II) signals, a growth factor is often secreted by cancer cells; such event offers a direct molecular link between IR-A/IR-B increased ratio in insulin resistance states (obesity and type 2 diabetes) and the malignant advantage provided by IGF-II to solid tumors. Nonetheless, recent findings on the biological role of isoforms for cellular signaling components suggest that the preferential expression of IR isoform-A may be part of a wider contextual isoform-expression switch in downstream regulatory factors, potentially enhancing IR-dependent oncogenic effects. The present review focuses on the role of isoform- and paralog-dependent variability in the IR and downstream cellular components playing a potential role in the modulation of the IR-A signaling related to the changes induced by insulin-resistance-linked conditions as well as to their relationship with the benign versus malignant transition in underlying solid tumors.
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Affiliation(s)
- Pierluigi Scalia
- Sbarro Institute for Cancer Research and Molecular Medicine, Temple University, Philadelphia, PA 19122, USA; (A.G.); (C.M.); (S.J.W.)
- ISOPROG-Somatolink EPFP Network, Functional Research Unit, Philadelphia, PA 19104, USA and 93100 Caltanissetta, Italy
- Correspondence:
| | - Antonio Giordano
- Sbarro Institute for Cancer Research and Molecular Medicine, Temple University, Philadelphia, PA 19122, USA; (A.G.); (C.M.); (S.J.W.)
- Department of Medical Biotechnologies, University of Siena, 52100 Siena, Italy
| | - Caroline Martini
- Sbarro Institute for Cancer Research and Molecular Medicine, Temple University, Philadelphia, PA 19122, USA; (A.G.); (C.M.); (S.J.W.)
| | - Stephen J. Williams
- Sbarro Institute for Cancer Research and Molecular Medicine, Temple University, Philadelphia, PA 19122, USA; (A.G.); (C.M.); (S.J.W.)
- ISOPROG-Somatolink EPFP Network, Functional Research Unit, Philadelphia, PA 19104, USA and 93100 Caltanissetta, Italy
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27
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Xu D, Huang X, Hassan HM, Wang L, Li S, Jiang Z, Zhang L, Wang T. Hypoglycaemic effect of catalpol in a mouse model of high-fat diet-induced prediabetes. Appl Physiol Nutr Metab 2020; 45:1127-1137. [PMID: 32294390 DOI: 10.1139/apnm-2020-0075] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Type 2 diabetes mellitus is a major health problem and a societal burden. Individuals with prediabetes are at increased risk of type 2 diabetes mellitus. Catalpol, an iridoid glycoside, has been reported to exert a hypoglycaemic effect in db/db mice, but its effect on the progression of prediabetes is unclear. In this study, we established a mouse model of prediabetes and examined the hypoglycaemic effect, and the mechanism of any such effect, of catalpol. Catalpol (200 mg/(kg·day)) had no effect on glucose tolerance or the serum lipid level in a mouse model of impaired glucose tolerance-stage prediabetes. However, catalpol (200 mg/(kg·day)) increased insulin sensitivity and decreased the fasting glucose level in a mouse model of impaired fasting glucose/impaired glucose tolerance-stage prediabetes. Moreover, catalpol increased the mitochondrial membrane potential (1.52-fold) and adenosine triphosphate content (1.87-fold) in skeletal muscle and improved skeletal muscle function. These effects were mediated by activation of the insulin receptor-1/glucose transporter type 4 (IRS-1/GLUT4) signalling pathway in skeletal muscle. Our findings will facilitate the development of a novel approach to suppressing the progression of diabetes at an early stage. Novelty Catalpol prevents the progression of prediabetes in a mouse model of prediabetes. Catalpol improves insulin sensitivity in skeletal muscle. The effects of catalpol are mediated by activation of the IRS-1/GLUT4 signalling pathway.
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Affiliation(s)
- Dengqiu Xu
- Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing 210009, People's Republic of China
| | - Xiaofei Huang
- Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing 210009, People's Republic of China
| | - Hozeifa M Hassan
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, People's Republic of China
| | - Lu Wang
- Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing 210009, People's Republic of China
| | - Sijia Li
- Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing 210009, People's Republic of China
| | - Zhenzhou Jiang
- Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing 210009, People's Republic of China.,Key Laboratory of Drug Quality Control and Pharmacovigilance, China Pharmaceutical University, Nanjing 210009, People's Republic of China
| | - Luyong Zhang
- Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing 210009, People's Republic of China.,Key Laboratory of Drug Quality Control and Pharmacovigilance, China Pharmaceutical University, Nanjing 210009, People's Republic of China.,Center for Drug Screening and Pharmacodynamics Evaluation, School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, People's Republic of China
| | - Tao Wang
- Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing 210009, People's Republic of China.,Jiangsu Center for Pharmacodynamics Research and Evaluation, China Pharmaceutical University, Nanjing 210009, People's Republic of China
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