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Lu J, Tang Z, Xu M, Lu J, Wang F, Ni X, Wang C, Yu B. Skeletal muscle cystathionine γ-lyase deficiency promotes obesity and insulin resistance and results in hyperglycemia and skeletal muscle injury upon HFD in mice. Redox Rep 2024; 29:2347139. [PMID: 38718286 DOI: 10.1080/13510002.2024.2347139] [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] [Indexed: 05/30/2024] Open
Abstract
OBJECTIVES The objective of this study was to investigate whether skeletal muscle cystathionine γ-lyase (CTH) contributes to high-fat diet (HFD)-induced metabolic disorders using skeletal muscle Cth knockout (CthΔskm) mice. METHODS The CthΔskm mice and littermate Cth-floxed (Cthf/f) mice were fed with either HFD or chow diet for 13 weeks. Metabolomics and transcriptome analysis were used to assess the impact of CTH deficiency in skeletal muscle. RESULTS Metabolomics coupled with transcriptome showed that CthΔskm mice displayed impaired energy metabolism and some signaling pathways linked to insulin resistance (IR) in skeletal muscle although the mice had normal insulin sensitivity. HFD led to reduced CTH expression and impaired energy metabolism in skeletal muscle in Cthf/f mice. CTH deficiency and HFD had some common pathways enriched in the aspects of amino acid metabolism, carbon metabolism, and fatty acid metabolism. CthΔskm+HFD mice exhibited increased body weight gain, fasting blood glucose, plasma insulin, and IR, and reduced glucose transporter 4 and CD36 expression in skeletal muscle compared to Cthf/f+HFD mice. Impaired mitochondria and irregular arrangement in myofilament occurred in CthΔskm+HFD mice. Omics analysis showed differential pathways enriched between CthΔskm mice and Cthf/f mice upon HFD. More severity in impaired energy metabolism, reduced AMPK signaling, and increased oxidative stress and ferroptosis occurred in CthΔskm+HFD mice compared to Cthf/f+HFD mice. DISCUSSION Our results indicate that skeletal muscle CTH expression dysregulation contributes to metabolism disorders upon HFD.
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Affiliation(s)
- Jiani Lu
- Department of Rehabilitation, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Zhengshan Tang
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, People's Republic of China
- National International Joint Research Center for Medical Metabolomics, Xiangya Hospital, Central South University, Changsha, People's Republic of China
| | - Miaomiao Xu
- School of Exercise and Health, Shanghai University of Sport, Shanghai, People's Republic of China
- School of Physical Education and Health, Guangzhou University of Chinese Medicine, Guangzhou, People's Republic of China
- South China Research Center for Acupuncture and Moxibustion, Medical College of Acu-Moxi and Re-Habilitation, Guangzhou University of Chinese Medicine, Guangzhou, People's Republic of China
| | - Jianqiang Lu
- School of Exercise and Health, Shanghai University of Sport, Shanghai, People's Republic of China
| | - Fengmei Wang
- Department of Obstetrics and Gynecology, 900th Hospital of Joint Logistics Support Force, Fujian Medical University, Fuzhou, People's Republic of China
| | - Xin Ni
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, People's Republic of China
- National International Joint Research Center for Medical Metabolomics, Xiangya Hospital, Central South University, Changsha, People's Republic of China
| | - Changnan Wang
- School of Life Sciences, Shanghai University, Shanghai, People's Republic of China
| | - Bo Yu
- Department of Rehabilitation, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
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Zhang L, Wu M, Zhang J, Liu T, Fu S, Wang Y, Xu Z. The pivotal role of glucose transporter 1 in diabetic kidney disease. Life Sci 2024; 353:122932. [PMID: 39067659 DOI: 10.1016/j.lfs.2024.122932] [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: 04/05/2024] [Revised: 07/12/2024] [Accepted: 07/20/2024] [Indexed: 07/30/2024]
Abstract
Diabetes mellitus (DM) is a significant public health problem. Diabetic kidney disease (DKD) is the most common complication of DM, and its incidence has been increasing with the increasing prevalence of DM. Given the association between DKD and mortality in patients with DM, DKD is a significant burden on public health resources. Despite its significance in DM progression, the pathogenesis of DKD remains unclear. Aberrant glucose uptake by cells is an important pathophysiological mechanism underlying DKD renal injury. Glucose is transported across the bilayer cell membrane by a glucose transporter (GLUT) located on the cell membrane. Multiple GLUT proteins have been identified in the kidney, and GLUT1 is one of the most abundantly expressed isoforms. GLUT1 is a crucial regulator of intracellular glucose metabolism and plays a key pathological role in the phenotypic changes in DKD mesangial cells. In an attempt to understand the pathogenesis of DKD better, we here present a review of studies on the role of GLUT1 in the development and progression of DKD.
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Affiliation(s)
- Li Zhang
- Department of Nephrology, The First Hospital of Jilin University, Changchun, 130021, China
| | - Meiyan Wu
- Department of Nephrology, The First Hospital of Jilin University, Changchun, 130021, China
| | - Jizhou Zhang
- Department of Biochemistry, College of Basic Medical Sciences, Jilin University, Changchun 130021, China
| | - Tingting Liu
- Department of Nephrology, The First Hospital of Jilin University, Changchun, 130021, China
| | - Shaojie Fu
- Department of Nephrology, The First Hospital of Jilin University, Changchun, 130021, China
| | - Yue Wang
- Department of Nephrology, The First Hospital of Jilin University, Changchun, 130021, China
| | - Zhonggao Xu
- Department of Nephrology, The First Hospital of Jilin University, Changchun, 130021, China.
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3
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Kondo M, Sawada K, Matsuda Y, Abe M, Sanechika N, Takanashi Y, Mori Y, Kimura M, Toyoda M. Study of the Effects of Deuterium-Depleted Water on the Expression of GLUT4 and Insulin Resistance in the Muscle Cell Line C2C12. Biomedicines 2024; 12:1771. [PMID: 39200235 PMCID: PMC11351524 DOI: 10.3390/biomedicines12081771] [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: 07/10/2024] [Revised: 07/29/2024] [Accepted: 08/04/2024] [Indexed: 09/02/2024] Open
Abstract
Deuterium-depleted water (DDW) is used in the treatment of many diseases, including cancer and diabetes. To detect the effect of DDW on gene expression and activation of the insulin-responsive transporter GLUT4 as a mechanism for improving the pathology of diabetes, we investigated the GLUT4 expression and glucose uptake at various concentrations of DDW using the myoblast cell line C2C12 differentiated into myotubes. GLUT4 gene expression significantly increased under deuterium depletion, reaching a maximum value at a deuterium concentration of approximately 50 ppm, which was approximately nine times that of natural water with a deuterium concentration of 150 ppm. GLUT4 protein also showed an increase at similar DDW concentrations. The membrane translocation of GLUT4 by insulin stimulation reached a maximum value at a deuterium concentration of approximately 50-75 ppm, which was approximately 2.2 times that in natural water. Accordingly, glucose uptake also increased by up to 2.2 times at a deuterium concentration of approximately 50 ppm. Drug-induced insulin resistance was attenuated, and the glucose uptake was four times higher in the presence of 10 ng/mL TNF-α and three times higher in the presence of 1 μg/mL resistin at a deuterium concentration of approximately 50 ppm relative to natural water. These results suggest that DDW promotes GLUT4 expression and insulin-stimulated activation in muscle cells and reduces insulin resistance, making it an effective treatment for diabetes.
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Affiliation(s)
- Masumi Kondo
- Division of Nephrology, Endocrinology and Metabolism, Department of Medicine, Tokai University Hachioji Hospital, 1838 Ishikawacho, Hachioji 192-0032, Japan; (M.K.); (M.A.)
| | - Kaichiro Sawada
- Division of Nephrology, Endocrinology and Metabolism, Department of Medicine, Tokai University School of Medicine, 143 Shimokasuya, Isehara 259-1193, Japan; (K.S.); (Y.M.); (N.S.); (Y.T.); (Y.M.); (M.K.)
| | - Yosuke Matsuda
- Division of Nephrology, Endocrinology and Metabolism, Department of Medicine, Tokai University School of Medicine, 143 Shimokasuya, Isehara 259-1193, Japan; (K.S.); (Y.M.); (N.S.); (Y.T.); (Y.M.); (M.K.)
| | - Makiko Abe
- Division of Nephrology, Endocrinology and Metabolism, Department of Medicine, Tokai University Hachioji Hospital, 1838 Ishikawacho, Hachioji 192-0032, Japan; (M.K.); (M.A.)
| | - Noriyuki Sanechika
- Division of Nephrology, Endocrinology and Metabolism, Department of Medicine, Tokai University School of Medicine, 143 Shimokasuya, Isehara 259-1193, Japan; (K.S.); (Y.M.); (N.S.); (Y.T.); (Y.M.); (M.K.)
| | - Yumi Takanashi
- Division of Nephrology, Endocrinology and Metabolism, Department of Medicine, Tokai University School of Medicine, 143 Shimokasuya, Isehara 259-1193, Japan; (K.S.); (Y.M.); (N.S.); (Y.T.); (Y.M.); (M.K.)
| | - Yoshitaka Mori
- Division of Nephrology, Endocrinology and Metabolism, Department of Medicine, Tokai University School of Medicine, 143 Shimokasuya, Isehara 259-1193, Japan; (K.S.); (Y.M.); (N.S.); (Y.T.); (Y.M.); (M.K.)
| | - Moritsugu Kimura
- Division of Nephrology, Endocrinology and Metabolism, Department of Medicine, Tokai University School of Medicine, 143 Shimokasuya, Isehara 259-1193, Japan; (K.S.); (Y.M.); (N.S.); (Y.T.); (Y.M.); (M.K.)
| | - Masao Toyoda
- Division of Nephrology, Endocrinology and Metabolism, Department of Medicine, Tokai University School of Medicine, 143 Shimokasuya, Isehara 259-1193, Japan; (K.S.); (Y.M.); (N.S.); (Y.T.); (Y.M.); (M.K.)
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4
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Henin G, Loumaye A, Deldicque L, Leclercq IA, Lanthier N. Unlocking liver health: Can tackling myosteatosis spark remission in metabolic dysfunction-associated steatotic liver disease? Liver Int 2024; 44:1781-1796. [PMID: 38623714 DOI: 10.1111/liv.15938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/04/2024] [Revised: 03/12/2024] [Accepted: 04/02/2024] [Indexed: 04/17/2024]
Abstract
Myosteatosis is highly prevalent in metabolic dysfunction-associated steatotic liver disease (MASLD) and could reciprocally impact liver function. Decreasing muscle fat could be indirectly hepatoprotective in MASLD. We conducted a review to identify interventions reducing myosteatosis and their impact on liver function. Non-pharmacological interventions included diet (caloric restriction or lipid enrichment), bariatric surgery and physical activity. Caloric restriction in humans achieving a mean weight loss of 3% only reduces muscle fat. Lipid-enriched diet increases liver fat in human with no impact on muscle fat, except sphingomyelin-enriched diet which reduces both lipid contents exclusively in pre-clinical studies. Bariatric surgery, hybrid training (resistance exercise and electric stimulation) or whole-body vibration in human decrease both liver and muscle fat. Physical activity impacts both phenotypes by reducing local and systemic inflammation, enhancing insulin sensitivity and modulating the expression of key mediators of the muscle-liver-adipose tissue axis. The combination of diet and physical activity acts synergistically in liver, muscle and white adipose tissue, and further decrease muscle and liver fat. Several pharmacological interventions (patchouli alcohol, KBP-089, 2,4-dinitrophenol methyl ether, adipoRon and atglistatin) and food supplementation (vitamin D or resveratrol) improve liver and muscle phenotypes in pre-clinical studies by increasing fatty acid oxidation and anti-inflammatory properties. These interventions are effective in reducing myosteatosis in MASLD while addressing the liver disease itself. This review supports that disturbances in inter-organ crosstalk are key pathophysiological mechanisms involved in MASLD and myosteatosis pathogenesis. Focusing on the skeletal muscle might offer new therapeutic strategies to treat MASLD by modulating the interactions between liver and muscles.
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Affiliation(s)
- Guillaume Henin
- Service d'Hépato-Gastroentérologie, Cliniques universitaires Saint-Luc, UCLouvain, Brussels, Belgium
- Laboratory of Hepatogastroenterology, Institut de Recherche Expérimentale et Clinique, Université catholique de Louvain (UCLouvain), Brussels, Belgium
| | - Audrey Loumaye
- Service d'Endocrinologie, Diabétologie et Nutrition, Cliniques universitaires Saint-Luc, UCLouvain, Brussels, Belgium
| | | | - Isabelle A Leclercq
- Laboratory of Hepatogastroenterology, Institut de Recherche Expérimentale et Clinique, Université catholique de Louvain (UCLouvain), Brussels, Belgium
| | - Nicolas Lanthier
- Service d'Hépato-Gastroentérologie, Cliniques universitaires Saint-Luc, UCLouvain, Brussels, Belgium
- Laboratory of Hepatogastroenterology, Institut de Recherche Expérimentale et Clinique, Université catholique de Louvain (UCLouvain), Brussels, Belgium
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5
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Springer C, Binsch C, Weide D, Toska L, Cremer AL, Backes H, Scheel AK, Espelage L, Kotzka J, Sill S, Kurowski A, Kim D, Karpinski S, Schnurr TM, Hansen T, Hartwig S, Lehr S, Cames S, Brüning JC, Lienhard M, Herwig R, Börno S, Timmermann B, Al-Hasani H, Chadt A. Depletion of TBC1D4 Improves the Metabolic Exercise Response by Overcoming Genetically Induced Peripheral Insulin Resistance. Diabetes 2024; 73:1058-1071. [PMID: 38608276 DOI: 10.2337/db23-0463] [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: 06/12/2023] [Accepted: 04/02/2024] [Indexed: 04/14/2024]
Abstract
The Rab-GTPase-activating protein (RabGAP) TBC1D4 (AS160) represents a key component in the regulation of glucose transport into skeletal muscle and white adipose tissue (WAT) and is therefore crucial during the development of insulin resistance and type 2 diabetes. Increased daily activity has been shown to be associated with improved postprandial hyperglycemia in allele carriers of a loss-of-function variant in the human TBC1D4 gene. Using conventional Tbc1d4-deficient mice (D4KO) fed a high-fat diet, we show that moderate endurance exercise training leads to substantially improved glucose and insulin tolerance and enhanced expression levels of markers for mitochondrial activity and browning in WAT from D4KO animals. Importantly, in vivo and ex vivo analyses of glucose uptake revealed increased glucose clearance in interscapular brown adipose tissue and WAT from trained D4KO mice. Thus, chronic exercise is able to overcome the genetically induced insulin resistance caused by Tbc1d4 depletion. Gene variants in TBC1D4 may be relevant in future precision medicine as determinants of exercise response. ARTICLE HIGHLIGHTS
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Affiliation(s)
- Christian Springer
- Institute for Clinical Biochemistry and Pathobiochemistry, Medical Faculty, German Diabetes Center (DDZ), Leibniz-Center for Diabetes Research at the Heinrich Heine University, Düsseldorf, Germany
- German Center for Diabetes Research, Partner Düsseldorf, München-Neuherberg, Germany
| | - Christian Binsch
- Institute for Clinical Biochemistry and Pathobiochemistry, Medical Faculty, German Diabetes Center (DDZ), Leibniz-Center for Diabetes Research at the Heinrich Heine University, Düsseldorf, Germany
- German Center for Diabetes Research, Partner Düsseldorf, München-Neuherberg, Germany
| | - Deborah Weide
- Institute for Clinical Biochemistry and Pathobiochemistry, Medical Faculty, German Diabetes Center (DDZ), Leibniz-Center for Diabetes Research at the Heinrich Heine University, Düsseldorf, Germany
- German Center for Diabetes Research, Partner Düsseldorf, München-Neuherberg, Germany
| | - Laura Toska
- Institute for Clinical Biochemistry and Pathobiochemistry, Medical Faculty, German Diabetes Center (DDZ), Leibniz-Center for Diabetes Research at the Heinrich Heine University, Düsseldorf, Germany
- German Center for Diabetes Research, Partner Düsseldorf, München-Neuherberg, Germany
| | - Anna L Cremer
- Max Planck Institute for Metabolism Research, Department of Neuronal Control of Metabolism, Cologne, Germany
| | - Heiko Backes
- Max Planck Institute for Metabolism Research, Department of Neuronal Control of Metabolism, Cologne, Germany
| | - Anna K Scheel
- Institute for Clinical Biochemistry and Pathobiochemistry, Medical Faculty, German Diabetes Center (DDZ), Leibniz-Center for Diabetes Research at the Heinrich Heine University, Düsseldorf, Germany
- German Center for Diabetes Research, Partner Düsseldorf, München-Neuherberg, Germany
| | - Lena Espelage
- Institute for Clinical Biochemistry and Pathobiochemistry, Medical Faculty, German Diabetes Center (DDZ), Leibniz-Center for Diabetes Research at the Heinrich Heine University, Düsseldorf, Germany
- German Center for Diabetes Research, Partner Düsseldorf, München-Neuherberg, Germany
| | - Jörg Kotzka
- Institute for Clinical Biochemistry and Pathobiochemistry, Medical Faculty, German Diabetes Center (DDZ), Leibniz-Center for Diabetes Research at the Heinrich Heine University, Düsseldorf, Germany
- German Center for Diabetes Research, Partner Düsseldorf, München-Neuherberg, Germany
| | - Sebastian Sill
- Institute for Clinical Biochemistry and Pathobiochemistry, Medical Faculty, German Diabetes Center (DDZ), Leibniz-Center for Diabetes Research at the Heinrich Heine University, Düsseldorf, Germany
- German Center for Diabetes Research, Partner Düsseldorf, München-Neuherberg, Germany
| | - Anette Kurowski
- Institute for Clinical Biochemistry and Pathobiochemistry, Medical Faculty, German Diabetes Center (DDZ), Leibniz-Center for Diabetes Research at the Heinrich Heine University, Düsseldorf, Germany
| | - Daebin Kim
- Institute for Clinical Biochemistry and Pathobiochemistry, Medical Faculty, German Diabetes Center (DDZ), Leibniz-Center for Diabetes Research at the Heinrich Heine University, Düsseldorf, Germany
| | - Sandra Karpinski
- Institute for Clinical Biochemistry and Pathobiochemistry, Medical Faculty, German Diabetes Center (DDZ), Leibniz-Center for Diabetes Research at the Heinrich Heine University, Düsseldorf, Germany
| | - Theresia M Schnurr
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Torben Hansen
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Sonja Hartwig
- Institute for Clinical Biochemistry and Pathobiochemistry, Medical Faculty, German Diabetes Center (DDZ), Leibniz-Center for Diabetes Research at the Heinrich Heine University, Düsseldorf, Germany
- German Center for Diabetes Research, Partner Düsseldorf, München-Neuherberg, Germany
| | - Stefan Lehr
- Institute for Clinical Biochemistry and Pathobiochemistry, Medical Faculty, German Diabetes Center (DDZ), Leibniz-Center for Diabetes Research at the Heinrich Heine University, Düsseldorf, Germany
- German Center for Diabetes Research, Partner Düsseldorf, München-Neuherberg, Germany
| | - Sandra Cames
- Institute for Clinical Biochemistry and Pathobiochemistry, Medical Faculty, German Diabetes Center (DDZ), Leibniz-Center for Diabetes Research at the Heinrich Heine University, Düsseldorf, Germany
- German Center for Diabetes Research, Partner Düsseldorf, München-Neuherberg, Germany
| | - Jens C Brüning
- Max Planck Institute for Metabolism Research, Department of Neuronal Control of Metabolism, Cologne, Germany
| | | | - Ralf Herwig
- Max Planck Institute for Molecular Genetics, Berlin, Germany
| | - Stefan Börno
- Max Planck Institute for Molecular Genetics, Berlin, Germany
| | | | - Hadi Al-Hasani
- Institute for Clinical Biochemistry and Pathobiochemistry, Medical Faculty, German Diabetes Center (DDZ), Leibniz-Center for Diabetes Research at the Heinrich Heine University, Düsseldorf, Germany
- German Center for Diabetes Research, Partner Düsseldorf, München-Neuherberg, Germany
| | - Alexandra Chadt
- Institute for Clinical Biochemistry and Pathobiochemistry, Medical Faculty, German Diabetes Center (DDZ), Leibniz-Center for Diabetes Research at the Heinrich Heine University, Düsseldorf, Germany
- German Center for Diabetes Research, Partner Düsseldorf, München-Neuherberg, Germany
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Niu W, Feng Y, Peng M, Cai J. A narrative review on the mechanism of natural flavonoids in improving glucolipid metabolism disorders. Phytother Res 2024. [PMID: 38924256 DOI: 10.1002/ptr.8276] [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: 02/26/2024] [Revised: 05/29/2024] [Accepted: 06/07/2024] [Indexed: 06/28/2024]
Abstract
Glucolipid metabolism disorder (GLMD) is a complex chronic disease characterized by glucose and lipid metabolism disorders with a complex and diverse etiology and rapidly increasing incidence. Many studies have identified the role of flavonoids in ameliorating GLMD, with mechanisms related to peroxisome proliferator-activated receptors, nuclear factor kappa-B, AMP-activated protein kinase, nuclear factor (erythroid-derived 2)-like 2, glucose transporter type 4, and phosphatidylinositol-3-kinase/protein kinase B pathway. However, a comprehensive summary of the flavonoid effects on GLMD is lacking. This study reviewed the roles and mechanisms of natural flavonoids with different structures in the treatment of GLMD reported globally in the past 5 years and provides a reference for developing flavonoids as drugs for treating GLMD.
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Affiliation(s)
- Wenjing Niu
- Guangdong Metabolic Diseases Research Centre of Integrated Chinese and Western Medicine, Guangdong Pharmaceutical University, Guangzhou, China
- Guangdong Provincial TCM Key Laboratory for Metabolic Diseases, Guangzhou, China
| | - Yongshi Feng
- Guangdong Metabolic Diseases Research Centre of Integrated Chinese and Western Medicine, Guangdong Pharmaceutical University, Guangzhou, China
- Guangdong Provincial TCM Key Laboratory for Metabolic Diseases, Guangzhou, China
| | - Minwen Peng
- Guangdong Metabolic Diseases Research Centre of Integrated Chinese and Western Medicine, Guangdong Pharmaceutical University, Guangzhou, China
- Guangdong Provincial TCM Key Laboratory for Metabolic Diseases, Guangzhou, China
| | - Jinyan Cai
- Guangdong Metabolic Diseases Research Centre of Integrated Chinese and Western Medicine, Guangdong Pharmaceutical University, Guangzhou, China
- Guangdong Provincial TCM Key Laboratory for Metabolic Diseases, Guangzhou, China
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Suo J, Wang Y, Wang L, Qiu B, Wang Z, Yan A, Qiang B, Han W, Peng X. RAB31 in glioma-derived endothelial cells promotes glioma cell invasion via extracellular vesicle-mediated enrichment of MYO1C. FEBS Open Bio 2024; 14:138-147. [PMID: 37953466 PMCID: PMC10761932 DOI: 10.1002/2211-5463.13736] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Revised: 09/19/2023] [Accepted: 11/10/2023] [Indexed: 11/14/2023] Open
Abstract
Extracellular vesicles (EV), important messengers in intercellular communication, can load and transport various bioactive components and participate in different biological processes. We previously isolated glioma human endothelial cells (GhECs) and found that GhECs, rather than normal human brain endothelial cells (NhECs), exhibit specific enrichment of MYO1C into EVs and promote the migration of glioma cells. In this study, we explored the mechanism by which MYO1C is secreted into EVs. We report that such secretion is dependent on RAB31, RAB27B, and FAS. When expression of RAB31 increases, MYO1C is enriched in secretory EVs. Finally, we identified an EV export mechanism for MYO1C that promotes glioma cell invasion and is dependent on RAB31 in GhECs. In summary, our data indicate that the knockdown of RAB31 can reduce enrichment of MYO1C in extracellular vesicles, thereby attenuating the promotion of glioma cell invasion by GhEC-EVs.
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Affiliation(s)
- Jinghao Suo
- Department of Molecular Biology and Biochemistry, Institute of Basic Medical Sciences, Medical Primate Research Center, Neuroscience Center, Chinese Academy of Medical Sciences, School of Basic MedicinePeking Union Medical CollegeBeijingChina
- State Key Laboratory of Common Mechanism Research for Major DiseasesBeijingChina
| | - Yuxin Wang
- Department of Molecular Biology and Biochemistry, Institute of Basic Medical Sciences, Medical Primate Research Center, Neuroscience Center, Chinese Academy of Medical Sciences, School of Basic MedicinePeking Union Medical CollegeBeijingChina
- State Key Laboratory of Common Mechanism Research for Major DiseasesBeijingChina
| | - Lin Wang
- Department of Molecular Biology and Biochemistry, Institute of Basic Medical Sciences, Medical Primate Research Center, Neuroscience Center, Chinese Academy of Medical Sciences, School of Basic MedicinePeking Union Medical CollegeBeijingChina
- State Key Laboratory of Common Mechanism Research for Major DiseasesBeijingChina
| | - Bojun Qiu
- Department of Molecular Biology and Biochemistry, Institute of Basic Medical Sciences, Medical Primate Research Center, Neuroscience Center, Chinese Academy of Medical Sciences, School of Basic MedicinePeking Union Medical CollegeBeijingChina
- State Key Laboratory of Common Mechanism Research for Major DiseasesBeijingChina
| | - Zhixing Wang
- Department of Molecular Biology and Biochemistry, Institute of Basic Medical Sciences, Medical Primate Research Center, Neuroscience Center, Chinese Academy of Medical Sciences, School of Basic MedicinePeking Union Medical CollegeBeijingChina
- State Key Laboratory of Common Mechanism Research for Major DiseasesBeijingChina
| | - An Yan
- Department of Molecular Biology and Biochemistry, Institute of Basic Medical Sciences, Medical Primate Research Center, Neuroscience Center, Chinese Academy of Medical Sciences, School of Basic MedicinePeking Union Medical CollegeBeijingChina
- State Key Laboratory of Common Mechanism Research for Major DiseasesBeijingChina
| | - Boqin Qiang
- Department of Molecular Biology and Biochemistry, Institute of Basic Medical Sciences, Medical Primate Research Center, Neuroscience Center, Chinese Academy of Medical Sciences, School of Basic MedicinePeking Union Medical CollegeBeijingChina
- State Key Laboratory of Common Mechanism Research for Major DiseasesBeijingChina
| | - Wei Han
- Department of Molecular Biology and Biochemistry, Institute of Basic Medical Sciences, Medical Primate Research Center, Neuroscience Center, Chinese Academy of Medical Sciences, School of Basic MedicinePeking Union Medical CollegeBeijingChina
- State Key Laboratory of Common Mechanism Research for Major DiseasesBeijingChina
| | - Xiaozhong Peng
- Department of Molecular Biology and Biochemistry, Institute of Basic Medical Sciences, Medical Primate Research Center, Neuroscience Center, Chinese Academy of Medical Sciences, School of Basic MedicinePeking Union Medical CollegeBeijingChina
- State Key Laboratory of Respiratory Health and MultimorbidityBeijingChina
- National Human Diseases Animal Model Resource Center, Beijing Engineering Research Center for Experimental Animal Models of Human Critical Diseases,Institute of Laboratory Animal ScienceChinese Academy of Medical Sciences & Peking Union Medical CollegeBeijingChina
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8
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Bian C, He X, Wang Q, Zheng Z, Zhang Y, Xiong H, Li Y, Zhao M, Li J. Biochemical Toxicological Study of Insulin Overdose in Rats: A Forensic Perspective. TOXICS 2023; 12:17. [PMID: 38250973 PMCID: PMC10819875 DOI: 10.3390/toxics12010017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2023] [Revised: 12/17/2023] [Accepted: 12/22/2023] [Indexed: 01/23/2024]
Abstract
Due to nonspecific pathological changes and the rapid degradation of insulin in postmortem blood samples, the identification of the cause of death during insulin overdose has always been a difficulty in forensic medicine. At present, there is a lack of studies on the toxicological changes and related mechanisms of an insulin overdose, and the specific molecular markers of insulin overdose are still unclear. In this study, an animal model of insulin overdose was established, and 24 SD rats were randomly divided into a control group, insulin overdose group, and a recovery group (n = 8). We detected the biochemical changes and analyzed the toxicological mechanism of an insulin overdose. The results showed that after insulin overdose, the rats developed irregular convulsions, Eclampsia, Opisthotonos, and other symptoms. The levels of glucose, glycogen, and C-peptide in the body decreased significantly, while the levels of lactate, insulin, and glucagon increased significantly. The decrease in plasma K+ was accompanied by the increase in skeletal muscle K+. The PI3K-AKT signaling pathway was significantly activated in skeletal muscle, and the translocation of GLUT4/Na+-K+-ATPase to sarcolemma was significantly increased. Rare glycogenic hepatopathy occurred in the recovery group after insulin overdose. Our study showed that insulin overdose also plays a role in skeletal muscle cells, mainly through the PI3K-Akt signaling pathway. Therefore, the detection of signaling pathway proteins of the skeletal muscle cell membrane GLUT4 and Na+-K+-ATPase has a certain auxiliary diagnostic value for forensic insulin overdose identification. Glycogen detection in the liver and skeletal muscle is important for the diagnosis of insulin overdose, but it still needs to be differentiated from other causes of death. Skeletal muscle has great potential for insulin detection, and the ratio of insulin to the C-peptide (I:C) can determine whether an exogenous insulin overdose is present.
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Affiliation(s)
- Cunhao Bian
- Department of Forensic Medicine, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, China; (C.B.); (X.H.); (Q.W.); (Z.Z.); (Y.Z.); (H.X.); (Y.L.); (M.Z.)
- Chongqing Engineering Research Center of Criminal Investigation Technology, Chongqing 400016, China
- Chongqing Key Laboratory of Forensic Medicine, Chongqing 400016, China
| | - Xin He
- Department of Forensic Medicine, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, China; (C.B.); (X.H.); (Q.W.); (Z.Z.); (Y.Z.); (H.X.); (Y.L.); (M.Z.)
- Chongqing Engineering Research Center of Criminal Investigation Technology, Chongqing 400016, China
- Chongqing Key Laboratory of Forensic Medicine, Chongqing 400016, China
| | - Qi Wang
- Department of Forensic Medicine, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, China; (C.B.); (X.H.); (Q.W.); (Z.Z.); (Y.Z.); (H.X.); (Y.L.); (M.Z.)
- Chongqing Engineering Research Center of Criminal Investigation Technology, Chongqing 400016, China
- Chongqing Key Laboratory of Forensic Medicine, Chongqing 400016, China
| | - Zhe Zheng
- Department of Forensic Medicine, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, China; (C.B.); (X.H.); (Q.W.); (Z.Z.); (Y.Z.); (H.X.); (Y.L.); (M.Z.)
- Chongqing Engineering Research Center of Criminal Investigation Technology, Chongqing 400016, China
- Chongqing Key Laboratory of Forensic Medicine, Chongqing 400016, China
| | - Yongtai Zhang
- Department of Forensic Medicine, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, China; (C.B.); (X.H.); (Q.W.); (Z.Z.); (Y.Z.); (H.X.); (Y.L.); (M.Z.)
- Chongqing Engineering Research Center of Criminal Investigation Technology, Chongqing 400016, China
- Chongqing Key Laboratory of Forensic Medicine, Chongqing 400016, China
| | - Hongli Xiong
- Department of Forensic Medicine, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, China; (C.B.); (X.H.); (Q.W.); (Z.Z.); (Y.Z.); (H.X.); (Y.L.); (M.Z.)
- Chongqing Engineering Research Center of Criminal Investigation Technology, Chongqing 400016, China
- Chongqing Key Laboratory of Forensic Medicine, Chongqing 400016, China
| | - Yongguo Li
- Department of Forensic Medicine, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, China; (C.B.); (X.H.); (Q.W.); (Z.Z.); (Y.Z.); (H.X.); (Y.L.); (M.Z.)
- Chongqing Engineering Research Center of Criminal Investigation Technology, Chongqing 400016, China
- Chongqing Key Laboratory of Forensic Medicine, Chongqing 400016, China
| | - Mingzhu Zhao
- Department of Forensic Medicine, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, China; (C.B.); (X.H.); (Q.W.); (Z.Z.); (Y.Z.); (H.X.); (Y.L.); (M.Z.)
- Chongqing Engineering Research Center of Criminal Investigation Technology, Chongqing 400016, China
- Chongqing Key Laboratory of Forensic Medicine, Chongqing 400016, China
| | - Jianbo Li
- Department of Forensic Medicine, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, China; (C.B.); (X.H.); (Q.W.); (Z.Z.); (Y.Z.); (H.X.); (Y.L.); (M.Z.)
- Chongqing Engineering Research Center of Criminal Investigation Technology, Chongqing 400016, China
- Chongqing Key Laboratory of Forensic Medicine, Chongqing 400016, China
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9
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Hwang J, Balakrishnan R, Oh E, Veluthakal R, Thurmond DC. A Novel Role for DOC2B in Ameliorating Palmitate-Induced Glucose Uptake Dysfunction in Skeletal Muscle Cells via a Mechanism Involving β-AR Agonism and Cofilin. Int J Mol Sci 2023; 25:137. [PMID: 38203312 PMCID: PMC10779393 DOI: 10.3390/ijms25010137] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2023] [Revised: 12/15/2023] [Accepted: 12/18/2023] [Indexed: 01/12/2024] Open
Abstract
Diet-related lipotoxic stress is a significant driver of skeletal muscle insulin resistance (IR) and type 2 diabetes (T2D) onset. β2-adrenergic receptor (β-AR) agonism promotes insulin sensitivity in vivo under lipotoxic stress conditions. Here, we established an in vitro paradigm of lipotoxic stress using palmitate (Palm) in rat skeletal muscle cells to determine if β-AR agonism could cooperate with double C-2-like domain beta (DOC2B) enrichment to promote skeletal muscle insulin sensitivity under Palm-stress conditions. Previously, human T2D skeletal muscles were shown to be deficient for DOC2B, and DOC2B enrichment resisted IR in vivo. Our Palm-stress paradigm induced IR and β-AR resistance, reduced DOC2B protein levels, triggered cytoskeletal cofilin phosphorylation, and reduced GLUT4 translocation to the plasma membrane (PM). By enhancing DOC2B levels in rat skeletal muscle, we showed that the deleterious effects of palmitate exposure upon cofilin, insulin, and β-AR-stimulated GLUT4 trafficking to the PM and glucose uptake were preventable. In conclusion, we revealed a useful in vitro paradigm of Palm-induced stress to test for factors that can prevent/reverse skeletal muscle dysfunctions related to obesity/pre-T2D. Discerning strategies to enrich DOC2B and promote β-AR agonism can resist skeletal muscle IR and halt progression to T2D.
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Affiliation(s)
- Jinhee Hwang
- Department of Molecular and Cellular Endocrinology, Arthur Riggs Diabetes and Metabolism Research Institute, Beckman Research Institute at City of Hope, Duarte, CA 91010, USA; (J.H.); (R.B.); (E.O.); (R.V.)
- Department of Food and Biotechnology, College of Science and Technology, Korea University, Sejong 30019, Republic of Korea
| | - Rekha Balakrishnan
- Department of Molecular and Cellular Endocrinology, Arthur Riggs Diabetes and Metabolism Research Institute, Beckman Research Institute at City of Hope, Duarte, CA 91010, USA; (J.H.); (R.B.); (E.O.); (R.V.)
| | - Eunjin Oh
- Department of Molecular and Cellular Endocrinology, Arthur Riggs Diabetes and Metabolism Research Institute, Beckman Research Institute at City of Hope, Duarte, CA 91010, USA; (J.H.); (R.B.); (E.O.); (R.V.)
| | - Rajakrishnan Veluthakal
- Department of Molecular and Cellular Endocrinology, Arthur Riggs Diabetes and Metabolism Research Institute, Beckman Research Institute at City of Hope, Duarte, CA 91010, USA; (J.H.); (R.B.); (E.O.); (R.V.)
| | - Debbie C. Thurmond
- Department of Molecular and Cellular Endocrinology, Arthur Riggs Diabetes and Metabolism Research Institute, Beckman Research Institute at City of Hope, Duarte, CA 91010, USA; (J.H.); (R.B.); (E.O.); (R.V.)
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10
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García AP, Gaydou L, Pérez E, Barrantes FJ. Insulin resistance induced by long-term hyperinsulinemia abolishes the effects of acute insulin exposure on cell-surface nicotinic acetylcholine receptor levels and actin cytoskeleton morphology. Biochem Biophys Res Commun 2023; 685:149165. [PMID: 37922786 DOI: 10.1016/j.bbrc.2023.149165] [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: 10/04/2023] [Accepted: 10/26/2023] [Indexed: 11/07/2023]
Abstract
Using CHO-K1/A5 cells, a clonal cell line that robustly expresses adult muscle-type nicotinic acetylcholine receptor (nAChR), we explored whether insulin resistance in these mammalian cells affects cell-surface expression of the nAChR, its endocytic internalization, and actin cytoskeleton integrity. Acute nanomolar insulin stimulation resulted in a slow increase in nAChR cell-surface levels, reaching maximum levels at ∼1 h. Long periods of insulin incubation caused CHO-K1/A5 cells to become insulin resistant, as previously observed with several other cell types. Furthermore, long-term insulin treatment abolished the effects of short-term insulin exposure on cell-surface nAChR levels, suggestive of a desensitization phenomenon. It also affected the kinetics of ligand-induced nAChR internalization. Since the integrity of the cortical actin cytoskeleton affects nAChR endocytosis, we also studied the effects of long-term insulin treatment on this meshwork. We found that it significantly affected the cortical actin morphology of CHO-K1/A5 cells and the response of the actin cytoskeleton to a subsequent short-term insulin stimulus. Overall, the present results show for the first time the effects of insulin signaling on cell-surface nAChR expression and actin cytoskeleton-associated internalization.
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Affiliation(s)
- Ana Paula García
- Laboratorio de Neurobiología Molecular, Instituto de Investigaciones Biomédicas (BIOMED) UCA-CONICET, Facultad de Ciencias Médicas, Universidad Católica de Argentina, Buenos Aires, Argentina; Instituto de Salud y Ambiente del Litoral (ISAL), Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral-CONICET, Santa Fe, Argentina
| | - Luisa Gaydou
- Instituto de Salud y Ambiente del Litoral (ISAL), Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral-CONICET, Santa Fe, Argentina; Departamento de Bioquímica Clínica y Cuantitativa, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Santa Fe, Argentina
| | - Eugenia Pérez
- Laboratorio de Neurobiología Molecular, Instituto de Investigaciones Biomédicas (BIOMED) UCA-CONICET, Facultad de Ciencias Médicas, Universidad Católica de Argentina, Buenos Aires, Argentina
| | - Francisco J Barrantes
- Laboratorio de Neurobiología Molecular, Instituto de Investigaciones Biomédicas (BIOMED) UCA-CONICET, Facultad de Ciencias Médicas, Universidad Católica de Argentina, Buenos Aires, Argentina.
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11
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Kawakami F, Imai M, Isaka Y, Cookson MR, Maruyama H, Kubo M, Farrer MJ, Kanzaki M, Kawashima R, Maekawa T, Tamaki S, Kurosaki Y, Kojima F, Ohba K, Ichikawa T. LRRK2 negatively regulates glucose tolerance via regulation of membrane translocation of GLUT4 in adipocytes. FEBS Open Bio 2023; 13:2200-2214. [PMID: 37845194 PMCID: PMC10699104 DOI: 10.1002/2211-5463.13717] [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: 03/30/2023] [Revised: 09/27/2023] [Accepted: 10/12/2023] [Indexed: 10/18/2023] Open
Abstract
Epidemiological studies have shown that abnormalities of glucose metabolism are involved in leucine-rich repeat kinase 2 (LRRK2)-associated Parkinson's disease (PD). However, the physiological significance of this association is unclear. In the present study, we investigated the effect of LRRK2 on high-fat diet (HFD)-induced glucose intolerance using Lrrk2-knockout (KO) mice. We found for the first time that HFD-fed KO mice display improved glucose tolerance compared with their wild-type (WT) counterparts. In addition, high serum insulin and leptin, as well as low serum adiponectin resulting from HFD in WT mice were improved in KO mice. Using western blotting, we found that Lrrk2 is highly expressed in adipose tissues compared with other insulin-related tissues that are thought to be important in glucose tolerance, including skeletal muscle, liver, and pancreas. Lrrk2 expression and phosphorylation of its kinase substrates Rab8a and Rab10 were significantly elevated after HFD treatment in WT mice. In cell culture experiments, treatment with a LRRK2 kinase inhibitor stimulated insulin-dependent membrane translocation of glucose transporter 4 (Glut4) and glucose uptake in mouse 3T3-L1 adipocytes. We conclude that increased LRRK2 kinase activity in adipose tissue exacerbates glucose tolerance by suppressing Rab8- and Rab10-mediated GLUT4 membrane translocation.
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Affiliation(s)
- Fumitaka Kawakami
- Department of Regulation Biochemistry, Graduate School of Medical SciencesKitasato UniversitySagamiharaJapan
- Department of Health Administration, School of Allied Health SciencesKitasato UniversitySagamiharaJapan
- Regenerative Medicine and Cell Design Research Facility, School of Allied Health ScienceKitasato UniversitySagamiharaJapan
| | - Motoki Imai
- Regenerative Medicine and Cell Design Research Facility, School of Allied Health ScienceKitasato UniversitySagamiharaJapan
- Department of Molecular Diagnostics, School of Allied Health SciencesKitasato UniversitySagamiharaJapan
| | - Yuki Isaka
- Department of Regulation Biochemistry, Graduate School of Medical SciencesKitasato UniversitySagamiharaJapan
| | - Mark R. Cookson
- Cell Biology and Gene Expression Section, Laboratory of Neurogenetics, National Institute on AgingNational Institutes of HealthBethesdaMDUSA
| | - Hiroko Maruyama
- Department of Cytopathology, Graduate School of Medical SciencesKitasato UniversitySagamiharaJapan
| | - Makoto Kubo
- Regenerative Medicine and Cell Design Research Facility, School of Allied Health ScienceKitasato UniversitySagamiharaJapan
- Department of Microbiology, School of Allied Health ScienceKitasato UniversitySagamiharaJapan
| | - Matthew J. Farrer
- Department of Neurology and Fixel InstituteUniversity of FloridaGainesvilleFLUSA
| | - Makoto Kanzaki
- Graduate School of Biomedical EngineeringTohoku UniversitySendaiJapan
| | - Rei Kawashima
- Department of Regulation Biochemistry, Graduate School of Medical SciencesKitasato UniversitySagamiharaJapan
- Regenerative Medicine and Cell Design Research Facility, School of Allied Health ScienceKitasato UniversitySagamiharaJapan
| | - Tatsunori Maekawa
- Department of Regulation Biochemistry, Graduate School of Medical SciencesKitasato UniversitySagamiharaJapan
- Regenerative Medicine and Cell Design Research Facility, School of Allied Health ScienceKitasato UniversitySagamiharaJapan
| | - Shun Tamaki
- Department of Regulation Biochemistry, Graduate School of Medical SciencesKitasato UniversitySagamiharaJapan
- Regenerative Medicine and Cell Design Research Facility, School of Allied Health ScienceKitasato UniversitySagamiharaJapan
| | - Yoshifumi Kurosaki
- Department of Regulation Biochemistry, Graduate School of Medical SciencesKitasato UniversitySagamiharaJapan
- Regenerative Medicine and Cell Design Research Facility, School of Allied Health ScienceKitasato UniversitySagamiharaJapan
- Department of Medical Laboratory Sciences, School of Allied Health SciencesKitasato UniversitySagamiharaJapan
| | - Fumiaki Kojima
- Department of Regulation Biochemistry, Graduate School of Medical SciencesKitasato UniversitySagamiharaJapan
- Regenerative Medicine and Cell Design Research Facility, School of Allied Health ScienceKitasato UniversitySagamiharaJapan
- Department of Pharmacology, School of Allied Health SciencesKitasato UniversitySagamiharaJapan
| | - Kenichi Ohba
- Department of Health Administration, School of Allied Health SciencesKitasato UniversitySagamiharaJapan
- Regenerative Medicine and Cell Design Research Facility, School of Allied Health ScienceKitasato UniversitySagamiharaJapan
| | - Takafumi Ichikawa
- Department of Regulation Biochemistry, Graduate School of Medical SciencesKitasato UniversitySagamiharaJapan
- Regenerative Medicine and Cell Design Research Facility, School of Allied Health ScienceKitasato UniversitySagamiharaJapan
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12
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Wang J, Zhang X, Wang X, Li F, Zhang D, Li X, Zhang Y, Zhao Y, Song Q, Zhao L, Xu D, Cheng J, Li W, Zhou B, Lin C, Wang W. Polymorphism and expression of the HMGA1 gene and association with tail fat deposition in Hu sheep. Anim Biotechnol 2023; 34:1626-1634. [PMID: 34775926 DOI: 10.1080/10495398.2021.1998093] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Hu sheep is an excellent short fat-tailed breed in China. Fat deposition in Hu sheep tail affects carcass quality and consumes a lot of energy, leading to an increase in feed cost. The objective of this study was to analyze the effects of HMGA1 polymorphism on tail fat weight in Hu sheep. Partial coding and non-coding sequences of HMGA1 were amplified with PCR and single nucleotide polymorphisms (SNP) of HMGA1 in 1163 Hu sheep were detected using DNA sequencing and KASPar technology. RT-qPCR analysis was performed to test HMGA1 expression in different tissues. The results showed that the expression of HMGA1 was higher in the duodenum, liver, spleen, kidney, and lung than in the heart, muscle, rumen, tail fat, and lymph. A mutation, g.5312 C > T, was detected in HMGA1; g.5312 C > T was significantly associated with tail fat weight, relative weight of tail fat (body weight), and relative weight of tail fat (carcass) (p < 0.05). The tail fat weight of the TT genotype was remarkably higher than that of the CC and TC genotypes. Therefore, HMGA1 can be used as a genetic marker for marker-assisted selection of tail fat weight in Hu sheep.
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Affiliation(s)
- Jianghui Wang
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, Gansu, China
| | - Xiaoxue Zhang
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, Gansu, China
| | - Xiaojuan Wang
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, Gansu, China
| | - Fadi Li
- The State Key Laboratory of Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, Gansu, China
- Engineering Laboratory of Sheep Breeding and Reproduction Biotechnology in Gansu Province, Minqin, China
| | - Deyin Zhang
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, Gansu, China
| | - Xiaolong Li
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, Gansu, China
| | - Yukun Zhang
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, Gansu, China
| | - Yuan Zhao
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, Gansu, China
| | - Qizhi Song
- Linze County Animal Disease Prevention and Control Center of Gansu Province, Linze, China
| | - Liming Zhao
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, Gansu, China
| | - Dan Xu
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, Gansu, China
| | - Jiangbo Cheng
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, Gansu, China
| | - Wenxin Li
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, Gansu, China
| | - Bubo Zhou
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, Gansu, China
| | - Changchun Lin
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, Gansu, China
| | - Weimin Wang
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, Gansu, China
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13
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Tokarz VL, Mylvaganam S, Klip A. Palmitate-induced insulin resistance causes actin filament stiffness and GLUT4 mis-sorting without altered Akt signalling. J Cell Sci 2023; 136:jcs261300. [PMID: 37815440 DOI: 10.1242/jcs.261300] [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: 05/02/2023] [Accepted: 09/25/2023] [Indexed: 10/11/2023] Open
Abstract
Skeletal muscle insulin resistance, a major contributor to type 2 diabetes, is linked to the consumption of saturated fats. This insulin resistance arises from failure of insulin-induced translocation of glucose transporter type 4 (GLUT4; also known as SLC2A4) to the plasma membrane to facilitate glucose uptake into muscle. The mechanisms of defective GLUT4 translocation are poorly understood, limiting development of insulin-sensitizing therapies targeting muscle glucose uptake. Although many studies have identified early insulin signalling defects and suggest that they are responsible for insulin resistance, their cause-effect has been debated. Here, we find that the saturated fat palmitate (PA) causes insulin resistance owing to failure of GLUT4 translocation in skeletal muscle myoblasts and myotubes without impairing signalling to Akt2 or AS160 (also known as TBC1D4). Instead, PA altered two basal-state events: (1) the intracellular localization of GLUT4 and its sorting towards a perinuclear storage compartment, and (2) actin filament stiffness, which prevents Rac1-dependent actin remodelling. These defects were triggered by distinct mechanisms, respectively protein palmitoylation and endoplasmic reticulum (ER) stress. Our findings highlight that saturated fats elicit muscle cell-autonomous dysregulation of the basal-state machinery required for GLUT4 translocation, which 'primes' cells for insulin resistance.
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Affiliation(s)
- Victoria L Tokarz
- Department of Physiology, University of Toronto, Ontario, M5S 1A8, Canada
- Cell Biology Program, The Hospital for Sick Children, Toronto, Ontario, M5G 1X8, Canada
| | - Sivakami Mylvaganam
- Cell Biology Program, The Hospital for Sick Children, Toronto, Ontario, M5G 1X8, Canada
- Department of Biochemistry, University of Toronto, Ontario, M5S 1A8, Canada
| | - Amira Klip
- Department of Physiology, University of Toronto, Ontario, M5S 1A8, Canada
- Department of Biochemistry, University of Toronto, Ontario, M5S 1A8, Canada
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14
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Kido K, Eskesen NO, Henriksen NS, Onslev J, Kristensen JM, Larsen MR, Hingst JR, Knudsen JR, Birk JB, Andersen NR, Jensen TE, Pehmøller C, Wojtaszewski JF, Kjøbsted R. AMPKγ3 Controls Muscle Glucose Uptake in Recovery From Exercise to Recapture Energy Stores. Diabetes 2023; 72:1397-1408. [PMID: 37506328 PMCID: PMC10545559 DOI: 10.2337/db23-0358] [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: 05/07/2023] [Accepted: 07/23/2023] [Indexed: 07/30/2023]
Abstract
Exercise increases muscle glucose uptake independently of insulin signaling and represents a cornerstone for the prevention of metabolic disorders. Pharmacological activation of the exercise-responsive AMPK in skeletal muscle has been proven successful as a therapeutic approach to treat metabolic disorders by improving glucose homeostasis through the regulation of muscle glucose uptake. However, conflicting observations cloud the proposed role of AMPK as a necessary regulator of muscle glucose uptake during exercise. We show that glucose uptake increases in human skeletal muscle in the absence of AMPK activation during exercise and that exercise-stimulated AMPKγ3 activity strongly correlates to muscle glucose uptake in the postexercise period. In AMPKγ3-deficient mice, muscle glucose uptake is normally regulated during exercise and contractions but impaired in the recovery period from these stimuli. Impaired glucose uptake in recovery from exercise and contractions is associated with a lower glucose extraction, which can be explained by a diminished permeability to glucose and abundance of GLUT4 at the muscle plasma membrane. As a result, AMPKγ3 deficiency impairs muscle glycogen resynthesis following exercise. These results identify a physiological function of the AMPKγ3 complex in human and rodent skeletal muscle that regulates glucose uptake in recovery from exercise to recapture muscle energy stores. ARTICLE HIGHLIGHTS Exercise-induced activation of AMPK in skeletal muscle has been proposed to regulate muscle glucose uptake in recovery from exercise. This study investigated whether the muscle-specific AMPKγ3-associated heterotrimeric complex was involved in regulating muscle glucose metabolism in recovery from exercise. The findings support that exercise-induced activation of the AMPKγ3 complex in human and mouse skeletal muscle enhances glucose uptake in recovery from exercise via increased translocation of GLUT4 to the plasma membrane. This work uncovers the physiological role of the AMPKγ3 complex in regulating muscle glucose uptake that favors replenishment of the muscle cellular energy stores.
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Affiliation(s)
- Kohei Kido
- August Krogh Section for Molecular Physiology, Department of Nutrition, Exercise and Sports, Faculty of Science, University of Copenhagen, Copenhagen, Denmark
- Health and Medical Research Institute, Department of Life Science and Biotechnology, National Institute of Advanced Industrial Science and Technology (AIST), Takamatsu, Kagawa, Japan
| | - Nicolas O. Eskesen
- August Krogh Section for Molecular Physiology, Department of Nutrition, Exercise and Sports, Faculty of Science, University of Copenhagen, Copenhagen, Denmark
| | - Nicolai S. Henriksen
- August Krogh Section for Molecular Physiology, Department of Nutrition, Exercise and Sports, Faculty of Science, University of Copenhagen, Copenhagen, Denmark
| | - Johan Onslev
- August Krogh Section for Molecular Physiology, Department of Nutrition, Exercise and Sports, Faculty of Science, University of Copenhagen, Copenhagen, Denmark
| | - Jonas M. Kristensen
- August Krogh Section for Molecular Physiology, Department of Nutrition, Exercise and Sports, Faculty of Science, University of Copenhagen, Copenhagen, Denmark
| | - Magnus R. Larsen
- August Krogh Section for Molecular Physiology, Department of Nutrition, Exercise and Sports, Faculty of Science, University of Copenhagen, Copenhagen, Denmark
| | - Janne R. Hingst
- August Krogh Section for Molecular Physiology, Department of Nutrition, Exercise and Sports, Faculty of Science, University of Copenhagen, Copenhagen, Denmark
| | - Jonas R. Knudsen
- August Krogh Section for Molecular Physiology, Department of Nutrition, Exercise and Sports, Faculty of Science, University of Copenhagen, Copenhagen, Denmark
| | - Jesper B. Birk
- August Krogh Section for Molecular Physiology, Department of Nutrition, Exercise and Sports, Faculty of Science, University of Copenhagen, Copenhagen, Denmark
| | - Nicoline R. Andersen
- August Krogh Section for Molecular Physiology, Department of Nutrition, Exercise and Sports, Faculty of Science, University of Copenhagen, Copenhagen, Denmark
| | - Thomas E. Jensen
- August Krogh Section for Molecular Physiology, Department of Nutrition, Exercise and Sports, Faculty of Science, University of Copenhagen, Copenhagen, Denmark
| | - Christian Pehmøller
- Internal Medicine Research Unit, Pfizer Global Research and Development, Cambridge, MA
| | - Jørgen F.P. Wojtaszewski
- August Krogh Section for Molecular Physiology, Department of Nutrition, Exercise and Sports, Faculty of Science, University of Copenhagen, Copenhagen, Denmark
| | - Rasmus Kjøbsted
- August Krogh Section for Molecular Physiology, Department of Nutrition, Exercise and Sports, Faculty of Science, University of Copenhagen, Copenhagen, Denmark
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15
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Chen KY, Liu Z, Yi J, Hui YP, Song YN, Lu JH, Chen HJ, Yang SY, Hu XY, Zhang DS, Liang GY. PDHA1 Alleviates Myocardial Ischemia-Reperfusion Injury by Improving Myocardial Insulin Resistance During Cardiopulmonary Bypass Surgery in Rats. Cardiovasc Drugs Ther 2023:10.1007/s10557-023-07501-9. [PMID: 37610688 DOI: 10.1007/s10557-023-07501-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 08/03/2023] [Indexed: 08/24/2023]
Abstract
OBJECTIVE Cardiopulmonary bypass (CPB) is a requisite technique for thoracotomy in advanced cardiovascular surgery. However, the consequent myocardial ischemia-reperfusion injury (MIRI) is the primary culprit behind cardiac dysfunction and fatal consequences post-operation. Prior research has posited that myocardial insulin resistance (IR) plays a vital role in exacerbating the progression of MIRI. Nonetheless, the exact mechanisms underlying this phenomenon remain obscure. METHODS We constructed pyruvate dehydrogenase E1 α subunit (PDHA1) interference and overexpression rats and used ascending aorta occlusion in an in vivo model of CPB-MIRI. We devised an in vivo model of CPB-MIRI by constructing rat models with both pyruvate dehydrogenase E1α subunit (PDHA1) interference and overexpression through ascending aorta occlusion. We analyzed myocardial glucose metabolism and the degree of myocardial injury using functional monitoring, biochemical assays, and histological analysis. RESULTS We discovered a clear downregulation of glucose transporter 4 (GLUT4) protein content expression in the CPB I/R model. In particular, cardiac-specific PDHA1 interference resulted in exacerbated cardiac dysfunction, significantly increased myocardial infarction area, more pronounced myocardial edema, and markedly increased cardiomyocyte apoptosis. Notably, the opposite effect was observed with PDHA1 overexpression, leading to a mitigated cardiac dysfunction and decreased incidence of myocardial infarction post-global ischemia. Mechanistically, PDHA1 plays a crucial role in regulating the protein content expression of GLUT4 on cardiomyocytes, thereby controlling the uptake and utilization of myocardial glucose, influencing the development of myocardial insulin resistance, and ultimately modulating MIRI. CONCLUSION Overall, our study sheds new light on the pivotal role of PDHA1 in glucose metabolism and the development of myocardial insulin resistance. Our findings hold promising therapeutic potential for addressing the deleterious effects of MIRI in patients.
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Affiliation(s)
- Kai-Yuan Chen
- Department of Cardiovascular Surgery, the Affiliated Hospital of Guizhou Medical University, Beijing Road, Yunyan District, Guiyang, 550001, Guizhou Province, China
- Translational Medicine Research Center, Guizhou Medical University, Guiyang, 550025, Guizhou Province, China
| | - Zhou Liu
- Translational Medicine Research Center, Guizhou Medical University, Guiyang, 550025, Guizhou Province, China
| | - Jing Yi
- Department of Anesthesiology, Affiliated Hospital of Guizhou Medical University, Guiyang, 550001, Guizhou Province, China
| | - Yong-Peng Hui
- Translational Medicine Research Center, Guizhou Medical University, Guiyang, 550025, Guizhou Province, China
| | - Ying-Nan Song
- Department of Cardiovascular Surgery, the Affiliated Hospital of Guizhou Medical University, Beijing Road, Yunyan District, Guiyang, 550001, Guizhou Province, China
- Translational Medicine Research Center, Guizhou Medical University, Guiyang, 550025, Guizhou Province, China
| | - Jun-Hou Lu
- Translational Medicine Research Center, Guizhou Medical University, Guiyang, 550025, Guizhou Province, China
| | - Hong-Jin Chen
- Department of Cardiovascular Surgery, the Affiliated Hospital of Guizhou Medical University, Beijing Road, Yunyan District, Guiyang, 550001, Guizhou Province, China
- Translational Medicine Research Center, Guizhou Medical University, Guiyang, 550025, Guizhou Province, China
| | - Si-Yuan Yang
- Department of Cardiovascular Surgery, the Affiliated Hospital of Guizhou Medical University, Beijing Road, Yunyan District, Guiyang, 550001, Guizhou Province, China
| | - Xuan-Yi Hu
- Department of Cardiovascular Surgery, the Affiliated Hospital of Guizhou Medical University, Beijing Road, Yunyan District, Guiyang, 550001, Guizhou Province, China
| | - Deng-Shen Zhang
- Department of Cardiovascular Surgery, the Affiliated Hospital of Zunyi Medical University, Zunyi, 563009, Guizhou Province, China
| | - Gui-You Liang
- Department of Cardiovascular Surgery, the Affiliated Hospital of Guizhou Medical University, Beijing Road, Yunyan District, Guiyang, 550001, Guizhou Province, China.
- Translational Medicine Research Center, Guizhou Medical University, Guiyang, 550025, Guizhou Province, China.
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Roham PH, Kamath JJ, Sharma S. Dissecting the Interrelationship between COVID-19 and Diabetes Mellitus. Adv Biol (Weinh) 2023; 7:e2300107. [PMID: 37246237 DOI: 10.1002/adbi.202300107] [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: 03/12/2023] [Revised: 04/20/2023] [Indexed: 05/30/2023]
Abstract
COVID-19 disease, caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), has led to enormous morbidity and mortality worldwide. After gaining entry into the human host, the virus initially infects the upper and lower respiratory tract, subsequently invading multiple organs, including the pancreas. While on one hand, diabetes mellitus (DM) is a significant risk factor for severe COVID-19 infection and associated death, recent reports have shown the onset of DM in COVID-19-recovered patients. SARS-CoV-2 infiltrates the pancreatic islets and activates stress response and inflammatory signaling pathways, impairs glucose metabolism, and consequently leads to their death. Indeed, the pancreatic autopsy samples of COVID-19 patients reveal the presence of SARS-CoV-2 particles in β-cells. The current review describes how the virus enters the host cells and activates an immunological response. Further, it takes a closer look into the interrelationship between COVID-19 and DM with the aim to provide mechanistic insights into the process by which SARS-CoV-2 infects the pancreas and mediates dysfunction and death of endocrine islets. The effects of known anti-diabetic interventions for COVID-19 management are also discussed. The application of mesenchymal stem cells (MSCs) as a future therapy for pancreatic β-cells damage to reverse COVID-19-induced DM is also emphasized.
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Affiliation(s)
- Pratiksha H Roham
- Department of Biotechnology, Savitribai Phule Pune University, Ganeshkhind Road, Pune, Maharashtra, 411007, India
| | - Jayesh J Kamath
- Department of Biotechnology, Savitribai Phule Pune University, Ganeshkhind Road, Pune, Maharashtra, 411007, India
| | - Shilpy Sharma
- Department of Biotechnology, Savitribai Phule Pune University, Ganeshkhind Road, Pune, Maharashtra, 411007, India
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He S, Li J, Yao Z, Gao Z, Jiang Y, Chen X, Peng L. Insulin alleviates murine colitis through microbiome alterations and bile acid metabolism. J Transl Med 2023; 21:498. [PMID: 37491256 PMCID: PMC10369930 DOI: 10.1186/s12967-023-04214-3] [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: 03/03/2023] [Accepted: 05/19/2023] [Indexed: 07/27/2023] Open
Abstract
BACKGROUND Insulin has been reported to exhibit anti-inflammatory activities in the context of bowel inflammation. However, the role of the interaction between insulin and the microbiota in gut health is unclear. Our goal was to investigate the mechanism of action of insulin in bowel inflammation and the relationship between insulin and the gut microbiota. METHODS We used acute and chronic murine models of inflammatory bowel disease (IBD) to evaluate whether insulin influences the progression of colitis. Colonic tissues, the host metabolome and the gut microbiome were analyzed to investigate the relationship among insulin treatment, the microbiome, and disease. Experiments involving antibiotic (Abx) treatment and fecal microbiota transplantation (FMT) confirmed the association among the gut microbiota, insulin and IBD. In a series of experiments, we further defined the mechanisms underlying the anti-inflammatory effects of insulin. RESULTS We found that low-dose insulin treatment alleviated intestinal inflammation but did not cause death. These effects were dependent on the gut microbiota, as confirmed by experiments involving Abx treatment and FMT. Using untargeted metabolomic profiling and 16S rRNA sequencing, we discovered that the level of the secondary bile acid lithocholic acid (LCA) was notably increased and the LCA levels were significantly associated with the abundance of Blautia, Enterorhadus and Rumi-NK4A214_group. Furthermore, LCA exerted anti-inflammatory effects by activating a G-protein-coupled bile acid receptor (TGR5), which inhibited the polarization of classically activated (M1) macrophages. CONCLUSION Together, these data suggest that insulin alters the gut microbiota and affects LCA production, ultimately delaying the progression of IBD.
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Affiliation(s)
- Shuying He
- Department of Gastroenterology, First Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, No. 151, Yanjiang West Road, Yuexiu District, Guangzhou, 510120, Guangdong, People's Republic of China
| | - Jiating Li
- Department of Gastroenterology, First Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, No. 151, Yanjiang West Road, Yuexiu District, Guangzhou, 510120, Guangdong, People's Republic of China
| | - Zirong Yao
- Department of Gastroenterology, First Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, No. 151, Yanjiang West Road, Yuexiu District, Guangzhou, 510120, Guangdong, People's Republic of China
| | - Zixian Gao
- Department of Gastroenterology, First Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, No. 151, Yanjiang West Road, Yuexiu District, Guangzhou, 510120, Guangdong, People's Republic of China
| | - Yonghong Jiang
- Department of Gastroenterology, First Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, No. 151, Yanjiang West Road, Yuexiu District, Guangzhou, 510120, Guangdong, People's Republic of China
| | - Xueqing Chen
- Department of Gastroenterology, First Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, No. 151, Yanjiang West Road, Yuexiu District, Guangzhou, 510120, Guangdong, People's Republic of China.
| | - Liang Peng
- Department of Gastroenterology, First Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, No. 151, Yanjiang West Road, Yuexiu District, Guangzhou, 510120, Guangdong, People's Republic of China.
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18
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Chan MP, Takenaka N, Satoh T. Impaired Insulin Signaling Mediated by the Small GTPase Rac1 in Skeletal Muscle of the Leptin-Deficient Obese Mouse. Int J Mol Sci 2023; 24:11531. [PMID: 37511290 PMCID: PMC10380855 DOI: 10.3390/ijms241411531] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 07/05/2023] [Accepted: 07/12/2023] [Indexed: 07/30/2023] Open
Abstract
Insulin-stimulated glucose uptake in skeletal muscle is mediated by the glucose transporter GLUT4. The small GTPase Rac1 acts as a switch of signal transduction that regulates GLUT4 translocation to the plasma membrane following insulin stimulation. However, it remains obscure whether signaling cascades upstream and downstream of Rac1 in skeletal muscle are impaired by obesity that causes insulin resistance and type 2 diabetes. In an attempt to clarify this point, we investigated Rac1 signaling in the leptin-deficient (Lepob/ob) mouse model. Here, we show that insulin-stimulated GLUT4 translocation and Rac1 activation are almost completely abolished in Lepob/ob mouse skeletal muscle. Phosphorylation of the protein kinase Akt2 and plasma membrane translocation of the guanine nucleotide exchange factor FLJ00068 following insulin stimulation were also diminished in Lepob/ob mice. On the other hand, the activation of another small GTPase RalA, which acts downstream of Rac1, by the constitutively activated form of Akt2, FLJ00068, or Rac1, was partially abrogated in Lepob/ob mice. Taken together, we conclude that insulin-stimulated glucose uptake is impaired by two mechanisms in Lepob/ob mouse skeletal muscle: one is the complete inhibition of Akt2-mediated activation of Rac1, and the other is the partial inhibition of RalA activation downstream of Rac1.
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Affiliation(s)
| | | | - Takaya Satoh
- Laboratory of Cell Biology, Department of Biological Chemistry, Graduate School of Science, Osaka Metropolitan University, Sakai 599-8531, Japan; (M.P.C.); (N.T.)
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19
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Fu M, Yang L, Wang H, Chen Y, Chen X, Hu Q, Sun H. Research progress into adipose tissue macrophages and insulin resistance. Physiol Res 2023; 72:287-299. [PMID: 37449743 PMCID: PMC10668993 DOI: 10.33549/physiolres.935046] [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: 12/01/2022] [Accepted: 03/07/2023] [Indexed: 08/26/2023] Open
Abstract
In recent years, there has been an increasing incidence of metabolic syndrome, type 2 diabetes, and cardiovascular events related to insulin resistance. As one of the target organs for insulin, adipose tissue is essential for maintaining in vivo immune homeostasis and metabolic regulation. Currently, the specific adipose tissue mechanisms involved in insulin resistance remain incompletely understood. There is increasing evidence that the process of insulin resistance is mostly accompanied by a dramatic increase in the number and phenotypic changes of adipose tissue macrophages (ATMs). In this review, we discuss the origins and functions of ATMs, some regulatory factors of ATM phenotypes, and the mechanisms through which ATMs mediate insulin resistance. We explore how ATM phenotypes contribute to insulin resistance in adipose tissue. We expect that modulation of ATM phenotypes will provide a novel strategy for the treatment of diseases associated with insulin resistance.
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Affiliation(s)
- M Fu
- Department of Endocrinology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
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20
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Wang C, Lin R, Qi X, Xu Q, Sun X, Zhao Y, Jiang T, Jiang J, Sun Y, Deng Y, Wen J. Alternative glucose uptake mediated by β-catenin/RSK1 axis under stress stimuli in mammalian cells. Biochem Pharmacol 2023:115645. [PMID: 37321415 DOI: 10.1016/j.bcp.2023.115645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2023] [Revised: 06/04/2023] [Accepted: 06/07/2023] [Indexed: 06/17/2023]
Abstract
Cells adapt to stress conditions by increasing glucose uptake as cytoprotective strategy. The efficiency of glucose uptake is determined by the translocation of glucose transporters (GLUTs) from cytosolic vesicles to cellular membranes in many tissues and cells. GLUT translocation is tightly controlled by the activation of Tre-2/BUB2/CDC16 1 domain family 4 (TBC1D4) via its phosphorylation. The mechanisms of glucose uptake under stress conditions remain to be clarified. In this study, we surprisingly found that glucose uptake is apparently increased for the early response to three stress stimuli, glucose starvation and the exposure to lipopolysaccharide (LPS) or deoxynivalenol (DON). The stress-induced glucose uptake was mainly controlled by the increment of β-catenin level and the activation of RSK1. Mechanistically, β-catenin directly interacted with RSK1 and TBC1D4, acting as the scaffold protein to recruit activated RSK1 to promote the phosphorylation of TBC1D4. In addition, β-catenin was further stabilized due to the inhibition of GSK3β kinase activity which is caused by activated RSK1 phosphorylating GSK3β at Ser9. In general, this triple protein complex consisting of β-catenin, phosphorylated RSK1, and TBC1D4 were increased in the early response to these stress signals, and consequently, further promoted the phosphorylation of TBC1D4 to facilitate the translocation of GLUT4 to the cell membrane. Our study revealed that the β-catenin/RSK1 axis contributed to the increment of glucose uptake for cellular adaption to these stress conditions, shedding new insights into cellular energy utilization under stress.
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Affiliation(s)
- Caizhu Wang
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, 510642, Guangdong, PR China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, Guangdong, PR China; Key Laboratory of Zoonosis of Ministry of Agriculture and Rural Affairs, South China Agricultural University, Guangzhou, 510642, Guangdong, PR China
| | - Ruqin Lin
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, 510642, Guangdong, PR China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, Guangdong, PR China; Key Laboratory of Zoonosis of Ministry of Agriculture and Rural Affairs, South China Agricultural University, Guangzhou, 510642, Guangdong, PR China
| | - Xueying Qi
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, 510642, Guangdong, PR China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, Guangdong, PR China; Key Laboratory of Zoonosis of Ministry of Agriculture and Rural Affairs, South China Agricultural University, Guangzhou, 510642, Guangdong, PR China
| | - Qiang Xu
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, 510642, Guangdong, PR China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, Guangdong, PR China; Key Laboratory of Zoonosis of Ministry of Agriculture and Rural Affairs, South China Agricultural University, Guangzhou, 510642, Guangdong, PR China
| | - Xingsheng Sun
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, 510642, Guangdong, PR China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, Guangdong, PR China; Key Laboratory of Zoonosis of Ministry of Agriculture and Rural Affairs, South China Agricultural University, Guangzhou, 510642, Guangdong, PR China
| | - Yurong Zhao
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, 510642, Guangdong, PR China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, Guangdong, PR China; Key Laboratory of Zoonosis of Ministry of Agriculture and Rural Affairs, South China Agricultural University, Guangzhou, 510642, Guangdong, PR China
| | - Tianqing Jiang
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, 510642, Guangdong, PR China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, Guangdong, PR China; Key Laboratory of Zoonosis of Ministry of Agriculture and Rural Affairs, South China Agricultural University, Guangzhou, 510642, Guangdong, PR China
| | - Jun Jiang
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, 510642, Guangdong, PR China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, Guangdong, PR China; Key Laboratory of Zoonosis of Ministry of Agriculture and Rural Affairs, South China Agricultural University, Guangzhou, 510642, Guangdong, PR China
| | - Yu Sun
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, 510642, Guangdong, PR China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, Guangdong, PR China; Key Laboratory of Zoonosis of Ministry of Agriculture and Rural Affairs, South China Agricultural University, Guangzhou, 510642, Guangdong, PR China
| | - Yiqun Deng
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, 510642, Guangdong, PR China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, Guangdong, PR China; Key Laboratory of Zoonosis of Ministry of Agriculture and Rural Affairs, South China Agricultural University, Guangzhou, 510642, Guangdong, PR China.
| | - Jikai Wen
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, 510642, Guangdong, PR China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, Guangdong, PR China; Key Laboratory of Zoonosis of Ministry of Agriculture and Rural Affairs, South China Agricultural University, Guangzhou, 510642, Guangdong, PR China.
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Antonescu CN, Ishikura S, Bilan PJ, Klip A. Measurement of GLUT4 Traffic to and from the Cell Surface in Muscle Cells. Curr Protoc 2023; 3:e803. [PMID: 37367531 DOI: 10.1002/cpz1.803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/28/2023]
Abstract
Elevated blood glucose following a meal is cleared by insulin-stimulated glucose entry into muscle and fat cells. The hormone increases the amount of the glucose transporter GLUT4 at the plasma membrane in these tissues at the expense of preformed intracellular pools. In addition, muscle contraction also increases glucose uptake via a gain in GLUT4 at the plasma membrane. Regulation of GLUT4 levels at the cell surface could arise from alterations in the rate of its exocytosis, endocytosis, or both. Hence, methods that can independently measure these traffic parameters for GLUT4 are essential to understanding the mechanism of regulation of membrane traffic of the transporter. Here, we describe cell population-based assays to measure the steady-state levels of GLUT4 at the cell surface, as well as to separately measure the rates of GLUT4 endocytosis and endocytosis. © 2023 Wiley Periodicals LLC. Basic Protocol 1: Measuring steady-state cell surface GLUT4myc Basic Protocol 2: Measuring steady-state cell surface GLUT4-HA Basic Protocol 3: Measuring GLUT4myc endocytosis Basic Protocol 4: Measuring GLUT4myc exocytosis.
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Affiliation(s)
- Costin N Antonescu
- Department of Chemistry and Biology, Toronto Metropolitan University, Toronto, Canada
| | | | - Philip J Bilan
- Program in Cell Biology, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Amira Klip
- Program in Cell Biology, The Hospital for Sick Children, Toronto, Ontario, Canada
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22
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Backe MB, Andersen RC, Jensen M, Jin C, Hundahl C, Dmytriyeva O, Treebak JT, Hansen JB, Gerhart-Hines Z, Madsen KL, Holst B. PICK1-Deficient Mice Maintain Their Glucose Tolerance During Diet-Induced Obesity. J Endocr Soc 2023; 7:bvad057. [PMID: 37200849 PMCID: PMC10185814 DOI: 10.1210/jendso/bvad057] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Indexed: 05/20/2023] Open
Abstract
Context Metabolic disorders such as obesity represent a major health challenge. Obesity alone has reached epidemic proportions, with at least 2.8 million people worldwide dying annually from diseases caused by overweight or obesity. The brain-metabolic axis is central to maintain homeostasis under metabolic stress via an intricate signaling network of hormones. Protein interacting with C kinase 1 (PICK1) is important for the biogenesis of various secretory vesicles, and we have previously shown that PICK1-deficient mice have impaired secretion of insulin and growth hormone. Objective The aim was to investigate how global PICK1-deficient mice respond to high-fat diet (HFD) and assess its role in insulin secretion in diet-induced obesity. Methods We characterized the metabolic phenotype through assessment of body weight, composition, glucose tolerance, islet morphology insulin secretion in vivo, and glucose-stimulated insulin secretion ex vivo. Results PICK1-deficient mice displayed similar weight gain and body composition as wild-type (WT) mice following HFD. While HFD impaired glucose tolerance of WT mice, PICK1-deficient mice were resistant to further deterioration of their glucose tolerance compared with already glucose-impaired chow-fed PICK1-deficient mice. Surprisingly, mice with β-cell-specific knockdown of PICK1 showed impaired glucose tolerance both on chow and HFD similar to WT mice. Conclusion Our findings support the importance of PICK1 in overall hormone regulation. However, importantly, this effect is independent of the PICK1 expression in the β-cell, whereby global PICK1-deficient mice resist further deterioration of their glucose tolerance following diet-induced obesity.
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Affiliation(s)
- Marie Balslev Backe
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
- Department of Clinical Epidemiology, Steno Diabetes Center Copenhagen, 2730 Herlev, Denmark
| | - Rita Chan Andersen
- Molecular Neuropharmacology and Genetics Laboratory, Department of Neuroscience, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Morten Jensen
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Chunyu Jin
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Cecilie Hundahl
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Oksana Dmytriyeva
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Jonas T Treebak
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Jakob Bondo Hansen
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Zach Gerhart-Hines
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Kenneth L Madsen
- Molecular Neuropharmacology and Genetics Laboratory, Department of Neuroscience, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Birgitte Holst
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
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Kim CJ, Singh C, Lee C, DiMagno K, O'Donnell M, Kaczmarek M, Ahmed A, Salvo‐Schaich J, Perez A, Letsou W, Sepulveda MC, Ramos RL, Hadjiargyrou M. Mustn1 ablation in skeletal muscle results in increased glucose tolerance concomitant with upregulated GLUT expression in male mice. Physiol Rep 2023; 11:e15674. [PMID: 37170065 PMCID: PMC10175242 DOI: 10.14814/phy2.15674] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 03/27/2023] [Accepted: 03/29/2023] [Indexed: 05/13/2023] Open
Abstract
Glucose homeostasis is closely regulated to maintain energy requirements of vital organs and skeletal muscle plays a crucial role in this process. Mustn1 is expressed during embryonic and postnatal skeletal muscle development and its function has been implicated in myogenic differentiation and myofusion. Whether Mustn1 plays a role in glucose homeostasis in anyway remains largely unknown. As such, we deleted Mustn1 in skeletal muscle using a conditional knockout (KO) mouse approach. KO mice did not reveal any specific gross phenotypic alterations in skeletal muscle. However, intraperitoneal glucose tolerance testing (IPGTT) revealed that 2-month-old male KO mice had significantly lower glycemia than their littermate wild type (WT) controls. These findings coincided with mRNA changes in genes known to be involved in glucose metabolism, tolerance, and insulin sensitivity; 2-month-old male KO mice had significantly higher expression of GLUT1 and GLUT10 transporters, MUP-1 while OSTN expression was lower. These differences in glycemia and gene expression were statistically insignificant after 4 months. Identical experiments in female KO and WT control mice did not indicate any differences at any age. Our results suggest a link between Mustn1 expression and glucose homeostasis during a restricted period of skeletal muscle development/maturation. While this is an observational study, Mustn1's relationship to glucose homeostasis appears to be more complex with a possible connection to other key proteins such as GLUTs, MUP-1, and OSTN. Additionally, our data indicate temporal and sex differences. Lastly, our findings strengthen the notion that Mustn1 plays a role in the metabolic capacity of skeletal muscle.
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Affiliation(s)
- Charles J. Kim
- College of Osteopathic MedicineNew York Institute of TechnologyOld WestburyNew YorkUSA
- Department of Biological and Chemical SciencesNew York Institute of TechnologyOld WestburyNew YorkUSA
| | - Chanpreet Singh
- College of Osteopathic MedicineNew York Institute of TechnologyOld WestburyNew YorkUSA
| | - Christine Lee
- Department of Biological and Chemical SciencesNew York Institute of TechnologyOld WestburyNew YorkUSA
| | - Kevin DiMagno
- College of Osteopathic MedicineNew York Institute of TechnologyOld WestburyNew YorkUSA
| | - Madison O'Donnell
- College of Osteopathic MedicineNew York Institute of TechnologyOld WestburyNew YorkUSA
| | - Marina Kaczmarek
- College of Osteopathic MedicineNew York Institute of TechnologyOld WestburyNew YorkUSA
| | - Arhum Ahmed
- Department of Biological and Chemical SciencesNew York Institute of TechnologyOld WestburyNew YorkUSA
| | - Jessica Salvo‐Schaich
- Department of Biological and Chemical SciencesNew York Institute of TechnologyOld WestburyNew YorkUSA
| | - Alexis Perez
- College of Osteopathic MedicineNew York Institute of TechnologyOld WestburyNew YorkUSA
| | - William Letsou
- Department of Biological and Chemical SciencesNew York Institute of TechnologyOld WestburyNew YorkUSA
| | | | - Raddy L. Ramos
- College of Osteopathic MedicineNew York Institute of TechnologyOld WestburyNew YorkUSA
| | - Michael Hadjiargyrou
- College of Osteopathic MedicineNew York Institute of TechnologyOld WestburyNew YorkUSA
- Department of Biological and Chemical SciencesNew York Institute of TechnologyOld WestburyNew YorkUSA
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24
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Zolfaghari N, Soheili ZS, Samiei S, Latifi-Navid H, Hafezi-Moghadam A, Ahmadieh H, Rezaei-Kanavi M. microRNA-96 targets the INS/AKT/GLUT4 signaling axis: Association with and effect on diabetic retinopathy. Heliyon 2023; 9:e15539. [PMID: 37180885 PMCID: PMC10172874 DOI: 10.1016/j.heliyon.2023.e15539] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 04/07/2023] [Accepted: 04/13/2023] [Indexed: 05/16/2023] Open
Abstract
Background miR-96-5p is a highly expressed microRNA in the retina of subjects with diabetes. The INS/AKT/GLUT4 signaling axis is the main cell signaling pathway of glucose uptake in cells. Here, we investigated the role of miR-96-5p in this signaling pathway. Methods Expression levels of miR-96-5p and its target genes were measured under high glucose conditions, in the retina of streptozotocin-induced diabetic mice, in the retina of AAV-2-eGFP-miR-96 or GFP intravitreal injected mice and in the retina of human donors with diabetic retinopathy (DR). MTT, wound healing, tube formation, Western blot, TUNEL, angiogenesis assays and hematoxylin-eosin staining of the retinal sections were performed. Results miR-96-5p expression was increased under high glucose conditions in mouse retinal pigment epithelial (mRPE) cells, in the retina of mice receiving AAV-2 carrying miR-96 and STZ-treated mice. Expression of the miR-96-5p target genes related to the INS/AKT/GLUT4 signaling pathway was reduced following miR-96-5p overexpression. mmu-miR-96-5p expression decreased cell proliferation and thicknesses of retinal layers. Cell migration, tube formation, vascular length, angiogenesis, and TUNEL-positive cells were increased. Conclusions In in vitro and in vivo studies and in human retinal tissues, miR-96-5p regulated the expression of the PIK3R1, PRKCE, AKT1, AKT2, and AKT3 genes in the INS/AKT axis and some genes involved in GLUT4 trafficking, such as Pak1, Snap23, RAB2a, and Ehd1. Because disruption of the INS/AKT/GLUT4 signaling axis causes advanced glycation end product accumulation and inflammatory responses, the inhibition of miR-96-5p expression could ameliorate DR.
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Affiliation(s)
- Narges Zolfaghari
- Department of Molecular Medicine, National Institute of Genetic Engineering and Biotechnology, Tehran, Iran
| | - Zahra-Soheila Soheili
- Department of Molecular Medicine, National Institute of Genetic Engineering and Biotechnology, Tehran, Iran
| | - Shahram Samiei
- Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran
| | - Hamid Latifi-Navid
- Department of Molecular Medicine, National Institute of Genetic Engineering and Biotechnology, Tehran, Iran
| | - Ali Hafezi-Moghadam
- Molecular Biomarkers Nano-Imaging Laboratory, Brigham and Women's Hospital, Boston, MA, USA
| | - Hamid Ahmadieh
- Ophthalmic Research Center, Research Institute for Ophthalmology and Vision Science, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mozhgan Rezaei-Kanavi
- Ocular Tissue Engineering Research Center, Research Institute for Ophthalmology and Vision Science, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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25
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Chang YC, Chan MH, Yang YF, Li CH, Hsiao M. Glucose transporter 4: Insulin response mastermind, glycolysis catalyst and treatment direction for cancer progression. Cancer Lett 2023; 563:216179. [PMID: 37061122 DOI: 10.1016/j.canlet.2023.216179] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 03/27/2023] [Accepted: 04/07/2023] [Indexed: 04/17/2023]
Abstract
The glucose transporter family (GLUT) consists of fourteen members. It is responsible for glucose homeostasis and glucose transport from the extracellular space to the cell cytoplasm to further cascade catalysis. GLUT proteins are encoded by the solute carrier family 2 (SLC2) genes and are members of the major facilitator superfamily of membrane transporters. Moreover, different GLUTs also have their transporter kinetics and distribution, so each GLUT member has its uniqueness and importance to play essential roles in human physiology. Evidence from many studies in the field of diabetes showed that GLUT4 travels between the plasma membrane and intracellular vesicles (GLUT4-storage vesicles, GSVs) and that the PI3K/Akt pathway regulates this activity in an insulin-dependent manner or by the AMPK pathway in response to muscle contraction. Moreover, some published results also pointed out that GLUT4 mediates insulin-dependent glucose uptake. Thus, dysfunction of GLUT4 can induce insulin resistance, metabolic reprogramming in diverse chronic diseases, inflammation, and cancer. In addition to the relationship between GLUT4 and insulin response, recent studies also referred to the potential upstream transcription factors that can bind to the promoter region of GLUT4 to regulating downstream signals. Combined all of the evidence, we conclude that GLUT4 has shown valuable unknown functions and is of clinical significance in cancers, which deserves our in-depth discussion and design compounds by structure basis to achieve therapeutic effects. Thus, we intend to write up a most updated review manuscript to include the most recent and critical research findings elucidating how and why GLUT4 plays an essential role in carcinogenesis, which may have broad interests and impacts on this field.
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Affiliation(s)
- Yu-Chan Chang
- Department of Biomedical Imaging and Radiological Science, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Ming-Hsien Chan
- Department of Biomedical Imaging and Radiological Science, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Yi-Fang Yang
- Department of Medical Education and Research, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan
| | - Chien-Hsiu Li
- Genomics Research Center, Academia Sinica, Taipei, Taiwan
| | - Michael Hsiao
- Genomics Research Center, Academia Sinica, Taipei, Taiwan; Department of Biochemistry, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.
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Micheli L, Bertini L, Bonato A, Villanova N, Caruso C, Caruso M, Bernini R, Tirone F. Role of Hydroxytyrosol and Oleuropein in the Prevention of Aging and Related Disorders: Focus on Neurodegeneration, Skeletal Muscle Dysfunction and Gut Microbiota. Nutrients 2023; 15:1767. [PMID: 37049607 PMCID: PMC10096778 DOI: 10.3390/nu15071767] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2023] [Revised: 03/16/2023] [Accepted: 03/24/2023] [Indexed: 04/09/2023] Open
Abstract
Aging is a multi-faceted process caused by the accumulation of cellular damage over time, associated with a gradual reduction of physiological activities in cells and organs. This degeneration results in a reduced ability to adapt to homeostasis perturbations and an increased incidence of illnesses such as cognitive decline, neurodegenerative and cardiovascular diseases, cancer, diabetes, and skeletal muscle pathologies. Key features of aging include a chronic low-grade inflammation state and a decrease of the autophagic process. The Mediterranean diet has been associated with longevity and ability to counteract the onset of age-related disorders. Extra virgin olive oil, a fundamental component of this diet, contains bioactive polyphenolic compounds as hydroxytyrosol (HTyr) and oleuropein (OLE), known for their antioxidant, anti-inflammatory, and neuroprotective properties. This review is focused on brain, skeletal muscle, and gut microbiota, as these systems are known to interact at several levels. After the description of the chemistry and pharmacokinetics of HTyr and OLE, we summarize studies reporting their effects in in vivo and in vitro models of neurodegenerative diseases of the central/peripheral nervous system, adult neurogenesis and depression, senescence and lifespan, and age-related skeletal muscle disorders, as well as their impact on the composition of the gut microbiota.
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Affiliation(s)
- Laura Micheli
- Institute of Biochemistry and Cell Biology, National Research Council (IBBC-CNR), Via E. Ramarini 32, Monterotondo, 00015 Rome, Italy
| | - Laura Bertini
- Department of Ecological and Biological Sciences (DEB), University of Tuscia, Largo dell’Università, 01100 Viterbo, Italy
| | - Agnese Bonato
- Institute of Biochemistry and Cell Biology, National Research Council (IBBC-CNR), Via E. Ramarini 32, Monterotondo, 00015 Rome, Italy
| | - Noemi Villanova
- Department of Agriculture and Forest Sciences (DAFNE), University of Tuscia, Via San Camillo de Lellis, 01100 Viterbo, Italy
| | - Carla Caruso
- Department of Ecological and Biological Sciences (DEB), University of Tuscia, Largo dell’Università, 01100 Viterbo, Italy
| | - Maurizia Caruso
- Institute of Biochemistry and Cell Biology, National Research Council (IBBC-CNR), Via E. Ramarini 32, Monterotondo, 00015 Rome, Italy
| | - Roberta Bernini
- Department of Agriculture and Forest Sciences (DAFNE), University of Tuscia, Via San Camillo de Lellis, 01100 Viterbo, Italy
| | - Felice Tirone
- Institute of Biochemistry and Cell Biology, National Research Council (IBBC-CNR), Via E. Ramarini 32, Monterotondo, 00015 Rome, Italy
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Wu D, Yuan X, Zhou R, Chen W, Li W, Li Z, Li X, Zhu R, Wang H, Yang Y. Aqueous extract of Sanghuangporus baumii induces autophagy to inhibit cervical carcinoma growth. Food Funct 2023; 14:2374-2384. [PMID: 36779533 DOI: 10.1039/d2fo02887e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
Sanghuangporus baumii, an edible fungus rich in heteropolysaccharides, has been found to have some anti-cervical cancer effects. In the current study, the effects of an aqueous extract of S. baumii on cervical cancer were investigated in a U14 cervical carcinoma cell implanted female Kunming mouse model. An aqueous extract of S. baumii (SHWE) was administered to tumor-bearing mice by gavage for 21 days. SHWE treatment significantly inhibited tumor growth by 67.4% at a dose of 400 mg per kg bodyweight. Transcriptomic results showed that the expression of key genes GABARAP, VMP1, VAMP8 and STX17 which are involved in the autophagy pathway was regulated after SHWE treatment, suggesting that SHWE may induce autophagy in tumors. The results were further confirmed by measuring the LC3II/LC3I ratio using western blotting. Moreover, some differentially expressed genes were involved in the insulin signaling pathway, implying that SHWE induced autophagy by disturbing glucose uptake and utilization in tumors. The analysis of the gut microbiota indicated that SHWE treatment stimulated the proliferation of Akkermansia, a well-known probiotic that presented benefits in metabolic regulation and cancer therapy. In conclusion, SHWE administration modified the gut microbiota, disturbed the glucose metabolism and induced autophagy in tumors, and then inhibited the development of cervical carcinoma in vivo.
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Affiliation(s)
- Di Wu
- Institute of Edible Fungi, Shanghai Academy of Agriculture Sciences, National Engineering Research Center of Edible Fungi, Key Laboratory of Edible Fungi Resources and Utilization (South), Ministry of Agriculture, Shanghai 201403, China.
| | - Xuemei Yuan
- School of Life Science and Technology, Wuhan Polytechnic University, Wuhan, China.
| | - Ruijie Zhou
- School of Life Science and Technology, Wuhan Polytechnic University, Wuhan, China.
| | - Wanchao Chen
- Institute of Edible Fungi, Shanghai Academy of Agriculture Sciences, National Engineering Research Center of Edible Fungi, Key Laboratory of Edible Fungi Resources and Utilization (South), Ministry of Agriculture, Shanghai 201403, China.
| | - Wen Li
- Institute of Edible Fungi, Shanghai Academy of Agriculture Sciences, National Engineering Research Center of Edible Fungi, Key Laboratory of Edible Fungi Resources and Utilization (South), Ministry of Agriculture, Shanghai 201403, China.
| | - Zhengpeng Li
- Institute of Edible Fungi, Shanghai Academy of Agriculture Sciences, National Engineering Research Center of Edible Fungi, Key Laboratory of Edible Fungi Resources and Utilization (South), Ministry of Agriculture, Shanghai 201403, China.
| | - Xueyin Li
- School of Life Science and Technology, Wuhan Polytechnic University, Wuhan, China.
| | - Rui Zhu
- Department of Integrated Chinese and Western Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Hualin Wang
- School of Life Science and Technology, Wuhan Polytechnic University, Wuhan, China.
| | - Yan Yang
- Institute of Edible Fungi, Shanghai Academy of Agriculture Sciences, National Engineering Research Center of Edible Fungi, Key Laboratory of Edible Fungi Resources and Utilization (South), Ministry of Agriculture, Shanghai 201403, China.
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De Loof M, Renguet E, Ginion A, Bouzin C, Horman S, Beauloye C, Bertrand L, Bultot L. Enhanced protein acetylation initiates fatty acid-mediated inhibition of cardiac glucose transport. Am J Physiol Heart Circ Physiol 2023; 324:H305-H317. [PMID: 36607800 DOI: 10.1152/ajpheart.00449.2022] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Fatty acids (FAs) rapidly and efficiently reduce cardiac glucose uptake in the Randle cycle or glucose-FA cycle. This fine-tuned physiological regulation is critical to allow optimal substrate allocation during fasted and fed states. However, the mechanisms involved in the direct FA-mediated control of glucose transport have not been totally elucidated yet. We previously reported that leucine and ketone bodies, other cardiac substrates, impair glucose uptake by increasing global protein acetylation from acetyl-CoA. As FAs generate acetyl-CoA as well, we postulated that protein acetylation is enhanced by FAs and participates in their inhibitory action on cardiac glucose uptake. Here, we demonstrated that both palmitate and oleate promoted a rapid increase in protein acetylation in primary cultured adult rat cardiomyocytes, which correlated with an inhibition of insulin-stimulated glucose uptake. This glucose absorption deficit was caused by an impairment in the translocation of vesicles containing the glucose transporter GLUT4 to the plasma membrane, although insulin signaling remained unaffected. Interestingly, pharmacological inhibition of lysine acetyltransferases (KATs) prevented this increase in protein acetylation and glucose uptake inhibition induced by FAs. Similarly, FA-mediated inhibition of insulin-stimulated glucose uptake could be prevented by KAT inhibitors in perfused hearts. To summarize, enhanced protein acetylation can be considered as an early event in the FA-induced inhibition of glucose transport in the heart, explaining part of the Randle cycle.NEW & NOTEWORTHY Our results show that cardiac metabolic overload by oleate or palmitate leads to increased protein acetylation inhibiting GLUT4 translocation to the plasma membrane and glucose uptake. This observation suggests an additional regulation mechanism in the physiological glucose-FA cycle originally discovered by Randle.
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Affiliation(s)
- Marine De Loof
- Pole of Cardiovascular Research, Institute for Experimental and Clinical Research, UCLouvain, Brussels, Belgium
| | - Edith Renguet
- Pole of Cardiovascular Research, Institute for Experimental and Clinical Research, UCLouvain, Brussels, Belgium
| | - Audrey Ginion
- Pole of Cardiovascular Research, Institute for Experimental and Clinical Research, UCLouvain, Brussels, Belgium
| | - Caroline Bouzin
- Institute for Experimental and Clinical Research, Imaging platform (2IP), UCLouvain, Brussels, Belgium
| | - Sandrine Horman
- Pole of Cardiovascular Research, Institute for Experimental and Clinical Research, UCLouvain, Brussels, Belgium
| | - Christophe Beauloye
- Pole of Cardiovascular Research, Institute for Experimental and Clinical Research, UCLouvain, Brussels, Belgium.,Division of Cardiology, Cliniques Universitaires Saint-Luc, Brussels, Belgium
| | - Luc Bertrand
- Pole of Cardiovascular Research, Institute for Experimental and Clinical Research, UCLouvain, Brussels, Belgium.,WELBIO Department, WEL Research Institute, Wavre, Belgium
| | - Laurent Bultot
- Pole of Cardiovascular Research, Institute for Experimental and Clinical Research, UCLouvain, Brussels, Belgium
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Regulation of De Novo Lipid Synthesis by the Small GTPase Rac1 in the Adipogenic Differentiation of Progenitor Cells from Mouse White Adipose Tissue. Int J Mol Sci 2023; 24:ijms24054608. [PMID: 36902044 PMCID: PMC10003776 DOI: 10.3390/ijms24054608] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2023] [Revised: 02/19/2023] [Accepted: 02/21/2023] [Indexed: 03/02/2023] Open
Abstract
White adipocytes act as lipid storage, and play an important role in energy homeostasis. The small GTPase Rac1 has been implicated in the regulation of insulin-stimulated glucose uptake in white adipocytes. Adipocyte-specific rac1-knockout (adipo-rac1-KO) mice exhibit atrophy of subcutaneous and epididymal white adipose tissue (WAT); white adipocytes in these mice are significantly smaller than controls. Here, we aimed to investigate the mechanisms underlying the aberrations in the development of Rac1-deficient white adipocytes by employing in vitro differentiation systems. Cell fractions containing adipose progenitor cells were obtained from WAT and subjected to treatments that induced differentiation into adipocytes. In concordance with observations in vivo, the generation of lipid droplets was significantly attenuated in Rac1-deficient adipocytes. Notably, the induction of various enzymes responsible for de novo synthesis of fatty acids and triacylglycerol in the late stage of adipogenic differentiation was almost completely suppressed in Rac1-deficient adipocytes. Furthermore, the expression and activation of transcription factors, such as the CCAAT/enhancer-binding protein (C/EBP) β, which is required for the induction of lipogenic enzymes, were largely inhibited in Rac1-deficient cells in both early and late stages of differentiation. Altogether, Rac1 is responsible for adipogenic differentiation, including lipogenesis, through the regulation of differentiation-related transcription.
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Molecular and Physiological Functions of PACAP in Sweat Secretion. Int J Mol Sci 2023; 24:ijms24054572. [PMID: 36902003 PMCID: PMC10002779 DOI: 10.3390/ijms24054572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2023] [Revised: 02/21/2023] [Accepted: 02/24/2023] [Indexed: 03/02/2023] Open
Abstract
Sweat plays a critical role in human body, including thermoregulation and the maintenance of the skin environment and health. Hyperhidrosis and anhidrosis are caused by abnormalities in sweat secretion, resulting in severe skin conditions (pruritus and erythema). Bioactive peptide and pituitary adenylate cyclase-activating polypeptide (PACAP) was isolated and identified to activate adenylate cyclase in pituitary cells. Recently, it was reported that PACAP increases sweat secretion via PAC1R in mice and promotes the translocation of AQP5 to the cell membrane through increasing intracellular [Ca2+] via PAC1R in NCL-SG3 cells. However, intracellular signaling mechanisms by PACAP are poorly clarified. Here, we used PAC1R knockout (KO) mice and wild-type (WT) mice to observe changes in AQP5 localization and gene expression in sweat glands by PACAP treatment. Immunohistochemistry revealed that PACAP promoted the translocation of AQP5 to the lumen side in the eccrine gland via PAC1R. Furthermore, PACAP up-regulated the expression of genes (Ptgs2, Kcnn2, Cacna1s) involved in sweat secretion in WT mice. Moreover, PACAP treatment was found to down-regulate the Chrna1 gene expression in PAC1R KO mice. These genes were found to be involved in multiple pathways related to sweating. Our data provide a solid basis for future research initiatives in order to develop new therapies to treat sweating disorders.
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Long noncoding RNA ENST00000436340 promotes podocyte injury in diabetic kidney disease by facilitating the association of PTBP1 with RAB3B. Cell Death Dis 2023; 14:130. [PMID: 36792603 PMCID: PMC9932062 DOI: 10.1038/s41419-023-05658-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Revised: 02/01/2023] [Accepted: 02/03/2023] [Indexed: 02/17/2023]
Abstract
Dysfunction of podocytes has been regarded as an important early pathologic characteristic of diabetic kidney disease (DKD), but the regulatory role of long noncoding RNAs (lncRNAs) in this process remains largely unknown. Here, we performed RNA sequencing in kidney tissues isolated from DKD patients and nondiabetic renal cancer patients undergoing surgical resection and discovered that the novel lncRNA ENST00000436340 was upregulated in DKD patients and high glucose-induced podocytes, and we showed a significant correlation between ENST00000436340 and kidney injury. Gain- and loss-of-function experiments showed that silencing ENST00000436340 alleviated high glucose-induced podocyte injury and cytoskeleton rearrangement. Mechanistically, we showed that fat mass and obesity- associate gene (FTO)-mediated m6A induced the upregulation of ENST00000436340. ENST00000436340 interacted with polypyrimidine tract binding protein 1 (PTBP1) and augmented PTBP1 binding to RAB3B mRNA, promoted RAB3B mRNA degradation, and thereby caused cytoskeleton rearrangement and inhibition of GLUT4 translocation to the plasma membrane, leading to podocyte injury and DKD progression. Together, our results suggested that upregulation of ENST00000436340 could promote podocyte injury through PTBP1-dependent RAB3B regulation, thus suggesting a novel form of lncRNA-mediated epigenetic regulation of podocytes that contributes to the pathogenesis of DKD.
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Gong Q, Yin J, Wang M, Zha C, Yu D, Yang S, Feng Y, Li J, Du L. Anemoside B4 Exerts Hypoglycemic Effect by Regulating the Expression of GLUT4 in HFD/STZ Rats. Molecules 2023; 28:molecules28030968. [PMID: 36770636 PMCID: PMC9921942 DOI: 10.3390/molecules28030968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 01/15/2023] [Accepted: 01/16/2023] [Indexed: 01/21/2023] Open
Abstract
Anemoside B4 (B4) is a saponin that is extracted from Pulsatilla chinensis (Bge.), and Regel exhibited anti-inflammatory, antioxidant, antiviral, and immunomodulatory activities. However, its hypoglycemic activity in diabetes mellitus has not been evaluated. Here, we explored the effect of B4 on hyperglycemia and studied its underlying mechanism of lowering blood glucose based on hyperglycemic rats in vivo and L6 skeletal muscle cells (L6) in vitro. The rats were fed a high-fat diet (HFD) for one month, combined with an intraperitoneal injection of 60 mg/kg streptozotocin (STZ) to construct the animal model, and the drug was administrated for two weeks. Blood glucose was detected and the proteins and mRNA were expressed. Our study showed that B4 significantly diminished fasting blood glucose (FBG) and improved glucose metabolism. In addition, B4 facilitated glucose utilization in L6 cells. B4 could enhance the expression of glucose transporter 4 (GLUT4) in rat skeletal muscle and L6 cells. Mechanistically, B4 elevated the inhibition of the phosphatidylinositol 3-kinase (PI3K)/protein kinase B (AKT) signaling pathways. Furthermore, we confirmed the effect of B4 on glucose uptake involved in the enhancement of GLUT4 expression in part due to PI3K/AKT signaling by using a small molecule inhibitor assay and constructing a GLUT4 promoter plasmid. Taken together, our study found that B4 ameliorates hyperglycemia through the PI3K/AKT pathway and promotes GLUT4 initiation, showing a new perspective of B4 as a potential agent against diabetes.
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Affiliation(s)
- Qin Gong
- School of pharmacy, Jiangxi University of Chinese Medicine, Nanchang 330006, China
- National Engineering Research Center for Manufacturing Technology of Solid Preparation, Nanchang 330006, China
| | - Jilei Yin
- Institute of Traditional Chinese Medicine, Jiangsu Union Technical Institute Lianyungang Branch, Lianyungang 222007, China
| | - Mulan Wang
- National Engineering Research Center for Manufacturing Technology of Solid Preparation, Nanchang 330006, China
| | - Chengliang Zha
- National Engineering Research Center for Manufacturing Technology of Solid Preparation, Nanchang 330006, China
| | - Dong Yu
- School of pharmacy, Jiangxi University of Chinese Medicine, Nanchang 330006, China
| | - Shilin Yang
- School of pharmacy, Jiangxi University of Chinese Medicine, Nanchang 330006, China
- National Engineering Research Center for Manufacturing Technology of Solid Preparation, Nanchang 330006, China
| | - Yulin Feng
- School of pharmacy, Jiangxi University of Chinese Medicine, Nanchang 330006, China
- National Engineering Research Center for Manufacturing Technology of Solid Preparation, Nanchang 330006, China
| | - Jun Li
- School of pharmacy, Jiangxi University of Chinese Medicine, Nanchang 330006, China
- National Engineering Research Center for Manufacturing Technology of Solid Preparation, Nanchang 330006, China
- Correspondence: (J.L.); (L.D.); Tel.:+86-180-7009-0101 (J.L.); +791-8711-9785 (L.D.)
| | - Lijun Du
- School of pharmacy, Jiangxi University of Chinese Medicine, Nanchang 330006, China
- National Engineering Research Center for Manufacturing Technology of Solid Preparation, Nanchang 330006, China
- School of Life Sciences, Tsinghua University, Beijing 100084, China
- Correspondence: (J.L.); (L.D.); Tel.:+86-180-7009-0101 (J.L.); +791-8711-9785 (L.D.)
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Undaria pinnatifida (Wakame) Intake Ameliorates High-Fat Diet-Induced Glucose Intolerance via Promoting GLUT4 Expression and Membrane Translocation in Muscle. J Nutr Metab 2023; 2023:9774157. [PMID: 36660406 PMCID: PMC9845039 DOI: 10.1155/2023/9774157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 12/13/2022] [Accepted: 12/13/2022] [Indexed: 01/12/2023] Open
Abstract
Type 2 diabetes mellitus (T2DM), a lifestyle-related disease, is developed due to eating habits and decreased physical activity. Diabetes also increases the risk of cancer and major neurodegenerative diseases; controlling the onset of diabetes helps prevent various illnesses. Eating seaweed, such as Undaria pinnatifida (wakame), is a part of the Asian food culture. Therefore, we analyzed the antidiabetic effect of wakame intake using the high-fat diet-induced diabetes mouse model. Furthermore, we analyzed the effect of wakame extract on the cell membrane translocation of glucose transporter-4 (GLUT4) and activation of insulin signal molecules, such as AKT and AMPK, in insulin-sensitive tissues. Differentiated C2C12 cells were incubated with wakame components. The membrane translocation of GLUT4 and phosphorylation of AKT and AMPK were investigated with immunofluorescence staining and Western blotting, respectively. Also, male C57BL/6J mice were fed the normal diet (ND), high-fat diet (HFD), ND with 1% wakame powder (ND + W), or HFD with 1% wakame powder (HFD + W). We evaluated the effect of wakame intake on high-fat diet-induced glucose intolerance using an oral glucose tolerance test. Moreover, we analyzed insulin signaling molecules, such as GLUT4, AKT, and AMPK, in muscle using Western blotting. GLUT4 membrane translocation was promoted by wakame components. Also, GLUT4 levels and AKT and AMPK phosphorylation were significantly elevated by wakame components in C2C12 cells. In addition, the area under the curve (AUC) of the HFD + W group was significantly smaller than that of the HFD group. Furthermore, the level of GLUT4 in the muscle was increased in the wakame intake group. This study revealed that various wakame components exerted antidiabetic effects on the mice on a high-fat diet by promoting glucose uptake in the skeletal muscle, enhancing GLUT4 levels, and activating AKT and AMPK.
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Tinosporaside from Tinospora cordifolia Encourages Skeletal Muscle Glucose Transport through Both PI-3-Kinase- and AMPK-Dependent Mechanisms. MOLECULES (BASEL, SWITZERLAND) 2023; 28:molecules28020483. [PMID: 36677541 PMCID: PMC9864719 DOI: 10.3390/molecules28020483] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 12/28/2022] [Accepted: 12/30/2022] [Indexed: 01/06/2023]
Abstract
The stem of Tinospora cordifolia has been traditionally used in traditional Indian systems of medicine for blood sugar control, without the knowledge of the underlying mechanism and chemical constitution responsible for the observed anti-diabetic effect. In the present study, Tinosporaside, a diterpenoid isolated from the stem of T. cordifolia, was investigated for its effects on glucose utilization in skeletal muscle cells, which was followed by determining the anti-hyperglycemic efficacy in our diabetic db/db mice model. We found that tinosporaside augmented glucose uptake by increasing the translocation of GLUT4 to the plasma membrane in L6 myotubes, upon prolonged exposure for 16 h. Moreover, tinosporaside treatment significantly increased the phosphorylation of protein kinase B/AKT (Ser-473) and 5' AMP-activated protein kinase (AMPK, Thr-172). These effects were abolished in the presence of the wortmannin and compound C. Administration of tinosporaside to db/db mice improved glucose tolerance and peripheral insulin sensitivity associated with increased gene expression and phosphorylation of the markers of phosphoinositide 3-kinases (PI3Ks) and AMPK signaling in skeletal muscle tissue. The findings revealed that tinosporaside exerted its antidiabetic efficacy by enhancing the rate of glucose utilization in skeletal muscle, mediated by PI3K- and AMPK-dependent signaling mechanisms.
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Abstract
The global prevalences of obesity and type 2 diabetes mellitus have reached epidemic status, presenting a heavy burden on society. It is therefore essential to find novel mechanisms and targets that could be utilized in potential treatment strategies and, as such, intracellular membrane trafficking has re-emerged as a regulatory tool for controlling metabolic homeostasis. Membrane trafficking is an essential physiological process that is responsible for the sorting and distribution of signalling receptors, membrane transporters and hormones or other ligands between different intracellular compartments and the plasma membrane. Dysregulation of intracellular transport is associated with many human diseases, including cancer, neurodegeneration, immune deficiencies and metabolic diseases, such as type 2 diabetes mellitus and its associated complications. This Review focuses on the latest advances on the role of endosomal membrane trafficking in metabolic physiology and pathology in vivo, highlighting the importance of this research field in targeting metabolic diseases.
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Affiliation(s)
- Jerome Gilleron
- Université Côte d'Azur, Institut National de la Santé et de la Recherche Médicale (Inserm), UMR1065 C3M, Team Cellular and Molecular Pathophysiology of Obesity, Nice, France.
| | - Anja Zeigerer
- Institute for Diabetes and Cancer, Helmholtz Center Munich, Neuherberg, Germany.
- German Center for Diabetes Research (DZD), Neuherberg, Germany.
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Han X, Yang Y, Liu S, Niu Y, Shao H, Fu L. Aerobic exercise ameliorates insulin resistance in C57BL/6 J mice via activating Sestrin3. Biochim Biophys Acta Mol Basis Dis 2023; 1869:166568. [PMID: 36220588 DOI: 10.1016/j.bbadis.2022.166568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 10/02/2022] [Accepted: 10/05/2022] [Indexed: 11/07/2022]
Abstract
Skeletal muscle insulin resistance (IR) is closely linked to hyperglycemia and metabolic disorders. Regular exercise enhances insulin sensitivity in skeletal muscle, but its underlying mechanisms remain unknown. Sestrin3 (SESN3) is a stress-inducible protein that protects against obesity-induced hepatic steatosis and insulin resistance. Regular exercise training is known to increase SESN3 expression in skeletal muscle. The purpose of this study was to explore whether SESN3 mediates the metabolic effects of exercise in the mouse model of high-fat diet (HFD)-induced IR. SESN3-/- mice exhibited severer body weight gain, ectopic lipid accumulation, and dysregulation of glucose metabolism after long-term HFD feeding compared with the wild-type (WT) mice. Moreover, we found that SESN3 deficiency weakened the effects of exercise on reducing serum insulin levels and improving glucose tolerance in mice. Exercise training increased pAKT-S473 and GLUT4 expression, accompanied by enhanced pmTOR-S2481 (an indicator of mTORC2 activity) in WT quadriceps that were less pronounced in SESN3-/- mice. SESN3 overexpression in C2C12 myotubes further confirmed that SESN3 played an important role in skeletal muscle glucose metabolism. SESN3 overexpression increased the binding of Rictor to mTOR and pmTOR-S2481 in C2C12 myotubes. Moreover, SESN3 overexpression resulted in an elevation of glucose uptake and a concomitant increase of pAKT-S473 in C2C12 myotubes, whereas these effects were diminished by downregulation of mTORC2 activity. Taken together, SESN3 is a crucial protein in amplifying the beneficial effects of exercise on insulin sensitivity in skeletal muscle and systemic glucose levels. SESN3/mTORC2/AKT pathway mediated the effects of exercise on skeletal muscle insulin sensitivity.
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Affiliation(s)
- Xiao Han
- Department of Rehabilitation, School of Medical Technology, Tianjin Medical University, Tianjin 300070, China
| | - Yang Yang
- Department of Rehabilitation, School of Medical Technology, Tianjin Medical University, Tianjin 300070, China
| | - Sujuan Liu
- Department of Anatomy and Histology, School of Basic Medical Science, Tianjin Medical University, Tianjin 300070, China
| | - Yanmei Niu
- Department of Rehabilitation, School of Medical Technology, Tianjin Medical University, Tianjin 300070, China
| | - Heng Shao
- Department of Anatomy and Histology, School of Basic Medical Science, Tianjin Medical University, Tianjin 300070, China
| | - Li Fu
- Department of Rehabilitation, School of Medical Technology, Tianjin Medical University, Tianjin 300070, China; Department of Physiology and Pathophysiology, School of Basic Medical Science, Tianjin Medical University, Tianjin 300070, China.
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Luo P, Wang Z, Su C, Li H, Zhang H, Huang Y, Chen W. Chicken GLUT4 undergoes complex alternative splicing events and its expression in striated muscle changes dramatically during development. Poult Sci 2022; 102:102403. [PMID: 36584419 PMCID: PMC9827075 DOI: 10.1016/j.psj.2022.102403] [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: 10/07/2022] [Revised: 12/01/2022] [Accepted: 12/05/2022] [Indexed: 12/13/2022] Open
Abstract
Glucose transporter protein 4 (GLUT4) plays an important role in regulating insulin-mediated glucose homeostasis in mammals. Until now, studies on GLUT4 have focused on mammals mostly, while chicken GLUT4 has been rarely investigated. In this study, chicken GLUT4 mRNA sequences were obtained by combining conventional amplification, 5'- and 3'- rapid amplification of cDNA ends technique (RACE), then bioinformatics analysis on its genomic structure, splicing pattern, subcellular localization prediction and homologous comparisons were carried out. In addition, the distribution of GLUT4 was detected by RT-qPCR in bird's liver and striated muscles (cardiac muscle, pectoralis and leg muscle) at different ages, including embryonic day 14 (E14), E19, 7-day-old (D7), D21 and D49 (n = 3-4). Results showed that chicken GLUT4 gene produced at least 14 transcripts (GenBank accession No: OP491293-OP491306) through alternative splicing and polyadenylation, which predicted encoding 12 types of amino acid (AA) sequences (with length ranged from 65 AA to 519 AA). These proteins contain typical major facilitator superfamily domain of glucose transporters with length variations, sharing a common sequence of 59 AA, and were predicted to have distinct subcellular localization. The dominant transcript (named as T1) consists of 11 exons with an open reading frame being predicted encoding 519 AA. In addition, analyzing on the spatio-temporal expression of chicken GLUT4 showed it dominantly expressed in pectoralis, leg muscles and cardiac muscle, and the mRNA level of chicken GLUT4 dramatically fluctuated with birds' development in cardiac muscle, pectoralis and leg muscles, with the level at D21 significantly higher than that at E14, E19, and D49 (P < 0.05). These data indicated that chicken GLUT4 undergoes complex alternative splicing events, and GLUT4 expression level in striated muscle was subjected to dynamic regulation with birds' development. Results indicate these isoforms may play overlapping and distinct roles in chicken.
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Affiliation(s)
| | | | | | | | | | - Yanqun Huang
- College of Animal Science, Henan Agricultural University, Zhengzhou, 450000, China.
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Orofiamma LA, Vural D, Antonescu CN. Control of cell metabolism by the epidermal growth factor receptor. BIOCHIMICA ET BIOPHYSICA ACTA. MOLECULAR CELL RESEARCH 2022; 1869:119359. [PMID: 36089077 DOI: 10.1016/j.bbamcr.2022.119359] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2022] [Revised: 08/24/2022] [Accepted: 09/01/2022] [Indexed: 06/15/2023]
Abstract
The epidermal growth factor receptor (EGFR) triggers the activation of many intracellular signals that control cell proliferation, growth, survival, migration, and differentiation. Given its wide expression, EGFR has many functions in development and tissue homeostasis. Some of the cellular outcomes of EGFR signaling involve alterations of specific aspects of cellular metabolism, and alterations of cell metabolism are emerging as driving influences in many physiological and pathophysiological contexts. Here we review the mechanisms by which EGFR regulates cell metabolism, including by modulation of gene expression and protein function leading to control of glucose uptake, glycolysis, biosynthetic pathways branching from glucose metabolism, amino acid metabolism, lipogenesis, and mitochondrial function. We further examine how this regulation of cell metabolism by EGFR may contribute to cell proliferation and differentiation and how EGFR-driven control of metabolism can impact certain diseases and therapy outcomes.
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Affiliation(s)
- Laura A Orofiamma
- Department of Chemistry and Biology, Toronto Metropolitan University, Toronto, Ontario M5B 2K3, Canada; Graduate Program in Molecular Science, Toronto Metropolitan University, Toronto, Ontario M5B 2K3, Canada
| | - Dafne Vural
- Department of Chemistry and Biology, Toronto Metropolitan University, Toronto, Ontario M5B 2K3, Canada; Graduate Program in Molecular Science, Toronto Metropolitan University, Toronto, Ontario M5B 2K3, Canada
| | - Costin N Antonescu
- Department of Chemistry and Biology, Toronto Metropolitan University, Toronto, Ontario M5B 2K3, Canada; Graduate Program in Molecular Science, Toronto Metropolitan University, Toronto, Ontario M5B 2K3, Canada.
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Cai K, Deng L, Zheng D, Li L, He Z, Yu C. MICAL1 facilitates pancreatic cancer proliferation, migration, and invasion by activating WNT/β-catenin pathway. J Transl Med 2022; 20:528. [DOI: 10.1186/s12967-022-03749-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Accepted: 11/02/2022] [Indexed: 11/15/2022] Open
Abstract
Abstract
Background
MICAL1 is involved in the malignant processes of several types of cancer; however, the role of MICAL1 in pancreatic cancer (PC) has not been well-characterized. This study aimed to investigate the expression and function of MICAL1 in PC.
Methods
RT-qPCR and immunohistochemistry were used to detect MICAL1 expression in PC and adjacent nontumor tissues. Cell Counting Kit-8, EdU, clone formation, wound healing, and Transwell assays as well as animal models were used to investigate the effects of overexpression or inhibition of MICAL1 expression on the proliferation, invasion, and metastasis of PC cells. RNA-seq was used to explore the main pathway underlying the functions of MICAL1. Proteomics, mass spectrometry, and co-immunoprecipitation assays were used to investigate the interaction of proteins with MICAL1. Rescue experiments were conducted to validate these findings.
Results
Both MICAL1 mRNA and protein levels were upregulated in PC tissues compared with matched adjacent nontumor tissues. The expression level of MICAL1 was associated with the proliferative and metastatic status of PC. Repression of MICAL1 significantly inhibited PC cell growth, migration, and invasion in vitro and in vivo. RNA sequencing analysis indicated that MICAL1 was closely correlated with the WNT pathway. Overexpression of MICAL1 (1) promoted the phosphorylation of TBC1D1 at the Ser660 site, (2) facilitated the distribution of FZD7 on the cytomembrane, (3) inhibited the degradation of FZD7 in the lysosome, and (4) activated the WNT pathway.
Conclusions
MICAL1 was upregulated in PC and involved in stimulating the progression of PC cells by activating the WNT/β-catenin signaling pathway. Therefore, MICAL1 is a potential therapeutic target for PC.
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Kaushik A, Sangtani R, Parmar HS, Bala K. Algal metabolites: Paving the way towards new generation antidiabetic therapeutics. ALGAL RES 2022. [DOI: 10.1016/j.algal.2022.102904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Sanchez MC, Chiabrando GA. Multitarget Activities of Müller Glial Cells and Low-Density Lipoprotein Receptor-Related Protein 1 in Proliferative Retinopathies. ASN Neuro 2022; 14:17590914221136365. [PMID: 36317314 PMCID: PMC9629547 DOI: 10.1177/17590914221136365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Müller glial cells (MGCs), the main glial component of the retina, play an active role in retinal homeostasis during development and pathological processes. They strongly monitor retinal environment and, in response to retinal imbalance, activate neuroprotective mechanisms mainly characterized by the increase of glial fibrillary acidic protein (GFAP). Under these circumstances, if homeostasis is not reestablished, the retina can be severely injured and GFAP contributes to neuronal degeneration, as they occur in several proliferative retinopathies such as diabetic retinopathy, sickle cell retinopathy and retinopathy of prematurity. In addition, MGCs have an active participation in inflammatory responses releasing proinflammatory mediators and metalloproteinases to the extracellular space and vitreous cavity. MGCs are also involved in the retinal neovascularization and matrix extracellular remodeling during the proliferative stage of retinopathies. Interestingly, low-density lipoprotein receptor-related protein 1 (LRP1) and its ligand α2-macroglobulin (α2M) are highly expressed in MGCs and they have been established to participate in multiple cellular and molecular activities with relevance in retinopathies. However, the exact mechanism of regulation of retinal LRP1 in MGCs is still unclear. Thus, the active participation of MGCs and LRP1 in these diseases, strongly supports the potential interest of them for the design of novel therapeutic approaches. In this review, we discuss the role of LRP1 in the multiple MGCs activities involved in the development and progression of proliferative retinopathies, identifying opportunities in the field that beg further research in this topic area.Summary StatementMGCs and LRP1 are active players in injured retinas, participating in key features such as gliosis and neurotoxicity, neovascularization, inflammation, and glucose control homeostasis during the progression of ischemic diseases, such as proliferative retinopathies.
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Affiliation(s)
- María C. Sanchez
- Universidad Nacional de Córdoba, Facultad de Ciencias Químicas, Departamento de Bioquímica Clínica, Córdoba, Argentina,Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI), Córdoba, Argentina
| | - Gustavo A. Chiabrando
- Instituto Universitario de Ciencias Biomédicas de Córdoba (IUCBC), Centro de Investigación en Medicina Traslacional Severo R. Amuchástegui (CIMETSA), G.V. al Instituto de Investigación Médica Mercedes y Martín Ferreyra (INIMEC-CONICET-UNC), Córdoba, Argentina,María C. Sanchez Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI), Haya de la Torre s/n Ciudad Universitaria, 5000 Córdoba, Argentina.
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Gustavo A. Chiabrando Instituto Universitario de Ciencias Biomédicas de Córdoba (IUCBC), Centro de Investigación en Medicina Traslacional Severo R. Amuchástegui (CIMETSA). Av. Naciones Unidas 420, Barrio Parque Vélez Sarsfield, X5016KEJ – Córdoba, Argentina.
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Andrographolide Promotes Uptake of Glucose and GLUT4 Transport through the PKC Pathway in L6 Cells. Pharmaceuticals (Basel) 2022; 15:ph15111346. [DOI: 10.3390/ph15111346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Revised: 10/21/2022] [Accepted: 10/26/2022] [Indexed: 11/06/2022] Open
Abstract
Glucose transporter 4 (GLUT4) is a membrane protein that regulates blood glucose balance and is closely related to type 2 diabetes. Andrographolide (AND) is a diterpene lactone extracted from herbal medicine Andrographis paniculata, which has a variety of biological activities. In this study, the antidiabetic effect of AND in L6 cells and its mechanism were investigated. The uptake of glucose of L6 cells was detected by a glucose assay kit. The expression of GLUT4 and phosphorylation of protein kinase B (PKB/Akt), AMP-dependent protein kinase (AMPK), and protein kinase C (PKC) were detected by Western blot. At the same time, the intracellular Ca2+ levels and GLUT4 translocation in myc-GLUT4-mOrange-L6 cells were detected by confocal laser scanning microscopy. The results showed that AND enhanced the uptake of glucose, GLUT4 expression and fusion with plasma membrane in L6 cells. Meanwhile, AND also significantly activated the phosphorylation of AMPK and PKC and increased the concentration of intracellular Ca2+. AND-induced GLUT4 expression was significantly inhibited by a PKC inhibitor (Gö6983). In addition, in the case of 0 mM extracellular Ca2+ and 0 mM extracellular Ca2+ + 10 μM BAPTA-AM (intracellular Ca2+ chelator), AND induced the translocation of GLUT4, and the uptake of glucose was significantly inhibited. Therefore, we concluded that AND promoted the expression of GLUT4 and its fusion with plasma membrane in L6 cells through PKC pathways in a Ca2+—dependent manner, thereby increasing the uptake of glucose.
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Galper J, Kim WS, Dzamko N. LRRK2 and Lipid Pathways: Implications for Parkinson's Disease. Biomolecules 2022; 12:1597. [PMID: 36358947 PMCID: PMC9687231 DOI: 10.3390/biom12111597] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Revised: 10/28/2022] [Accepted: 10/28/2022] [Indexed: 04/10/2024] Open
Abstract
Genetic alterations in the LRRK2 gene, encoding leucine-rich repeat kinase 2, are a common risk factor for Parkinson's disease. How LRRK2 alterations lead to cell pathology is an area of ongoing investigation, however, multiple lines of evidence suggest a role for LRRK2 in lipid pathways. It is increasingly recognized that in addition to being energy reservoirs and structural entities, some lipids, including neural lipids, participate in signaling cascades. Early investigations revealed that LRRK2 localized to membranous and vesicular structures, suggesting an interaction of LRRK2 and lipids or lipid-associated proteins. LRRK2 substrates from the Rab GTPase family play a critical role in vesicle trafficking, lipid metabolism and lipid storage, all processes which rely on lipid dynamics. In addition, LRRK2 is associated with the phosphorylation and activity of enzymes that catabolize plasma membrane and lysosomal lipids. Furthermore, LRRK2 knockout studies have revealed that blood, brain and urine exhibit lipid level changes, including alterations to sterols, sphingolipids and phospholipids, respectively. In human LRRK2 mutation carriers, changes to sterols, sphingolipids, phospholipids, fatty acyls and glycerolipids are reported in multiple tissues. This review summarizes the evidence regarding associations between LRRK2 and lipids, and the functional consequences of LRRK2-associated lipid changes are discussed.
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Affiliation(s)
- Jasmin Galper
- Charles Perkins Centre and Faculty of Medicine and Health, School of Medical Sciences, University of Sydney, Camperdown, NSW 2050, Australia
| | - Woojin S Kim
- Brain and Mind Centre and Faculty of Medicine and Health, School of Medical Sciences, University of Sydney, Camperdown, NSW 2050, Australia
| | - Nicolas Dzamko
- Charles Perkins Centre and Faculty of Medicine and Health, School of Medical Sciences, University of Sydney, Camperdown, NSW 2050, Australia
- Brain and Mind Centre and Faculty of Medicine and Health, School of Medical Sciences, University of Sydney, Camperdown, NSW 2050, Australia
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Yin X, Chen Y, Ruze R, Xu R, Song J, Wang C, Xu Q. The evolving view of thermogenic fat and its implications in cancer and metabolic diseases. Signal Transduct Target Ther 2022; 7:324. [PMID: 36114195 PMCID: PMC9481605 DOI: 10.1038/s41392-022-01178-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 08/30/2022] [Accepted: 09/05/2022] [Indexed: 02/07/2023] Open
Abstract
AbstractThe incidence of metabolism-related diseases like obesity and type 2 diabetes mellitus has reached pandemic levels worldwide and increased gradually. Most of them are listed on the table of high-risk factors for malignancy, and metabolic disorders systematically or locally contribute to cancer progression and poor prognosis of patients. Importantly, adipose tissue is fundamental to the occurrence and development of these metabolic disorders. White adipose tissue stores excessive energy, while thermogenic fat including brown and beige adipose tissue dissipates energy to generate heat. In addition to thermogenesis, beige and brown adipocytes also function as dynamic secretory cells and a metabolic sink of nutrients, like glucose, fatty acids, and amino acids. Accordingly, strategies that activate and expand thermogenic adipose tissue offer therapeutic promise to combat overweight, diabetes, and other metabolic disorders through increasing energy expenditure and enhancing glucose tolerance. With a better understanding of its origins and biological functions and the advances in imaging techniques detecting thermogenesis, the roles of thermogenic adipose tissue in tumors have been revealed gradually. On the one hand, enhanced browning of subcutaneous fatty tissue results in weight loss and cancer-associated cachexia. On the other hand, locally activated thermogenic adipocytes in the tumor microenvironment accelerate cancer progression by offering fuel sources and is likely to develop resistance to chemotherapy. Here, we enumerate current knowledge about the significant advances made in the origin and physiological functions of thermogenic fat. In addition, we discuss the multiple roles of thermogenic adipocytes in different tumors. Ultimately, we summarize imaging technologies for identifying thermogenic adipose tissue and pharmacologic agents via modulating thermogenesis in preclinical experiments and clinical trials.
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Behl T, Gupta A, Sehgal A, Albarrati A, Albratty M, Meraya AM, Najmi A, Bhatia S, Bungau S. Exploring protein tyrosine phosphatases (PTP) and PTP-1B inhibitors in management of diabetes mellitus. Biomed Pharmacother 2022; 153:113405. [DOI: 10.1016/j.biopha.2022.113405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Revised: 07/07/2022] [Accepted: 07/08/2022] [Indexed: 11/02/2022] Open
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Vorotnikov AV, Popov DV, Makhnovskii PA. Signaling and Gene Expression in Skeletal Muscles in Type 2 Diabetes: Current Results and OMICS Perspectives. BIOCHEMISTRY. BIOKHIMIIA 2022; 87:1021-1034. [PMID: 36180992 DOI: 10.1134/s0006297922090139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 08/09/2022] [Accepted: 08/10/2022] [Indexed: 06/16/2023]
Abstract
Skeletal muscles mainly contribute to the emergence of insulin resistance, impaired glucose tolerance and the development of type 2 diabetes. Molecular mechanisms that regulate glucose uptake are diverse, including the insulin-dependent as most important, and others as also significant. They involve a wide range of proteins that control intracellular traffic and exposure of glucose transporters on the cell surface to create an extensive regulatory network. Here, we highlight advantages of the omics approaches to explore the insulin-regulated proteins and genes in human skeletal muscle with varying degrees of metabolic disorders. We discuss methodological aspects of the assessment of metabolic dysregulation and molecular responses of human skeletal muscle to insulin. The known molecular mechanisms of glucose uptake regulation and the first results of phosphoproteomic and transcriptomic studies are reviewed, which unveiled a large-scale array of insulin targets in muscle cells. They demonstrate that a clear depiction of changes that occur during metabolic dysfunction requires systemic and combined analysis at different levels of regulation, including signaling pathways, transcription factors, and gene expression. Such analysis seems promising to explore yet undescribed regulatory mechanisms of glucose uptake by skeletal muscle and identify the key regulators as potential therapeutic targets.
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Affiliation(s)
- Alexander V Vorotnikov
- Institute of Biomedical Problems, Russian Academy of Sciences, Moscow, 123007, Russia.
- National Medical Research Center of Cardiology, Ministry of Healthcare of the Russian Federation, Moscow, 121552, Russia
| | - Daniil V Popov
- Institute of Biomedical Problems, Russian Academy of Sciences, Moscow, 123007, Russia.
- Faculty of Fundamental Medicine, Lomonosov Moscow State University, Moscow, 119991, Russia
| | - Pavel A Makhnovskii
- Institute of Biomedical Problems, Russian Academy of Sciences, Moscow, 123007, Russia
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Fischer SV, Appel MH, Naliwaiko K, Pagliosa DD, Araújo DN, Capote AE, Oliveira BAC, Fernandes LC. Early introduction of exercise prevents insulin resistance in postnatal overfed rats. Braz J Med Biol Res 2022; 55:e11987. [PMID: 35857997 PMCID: PMC9296124 DOI: 10.1590/1414-431x2022e11987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Accepted: 04/27/2022] [Indexed: 11/25/2022] Open
Abstract
Early childhood obesity increases the risk of developing metabolic diseases. We
examined the early introduction of exercise in small-litter obese-induced rats
(SL) on glucose metabolism in the epididymal adipose tissue (AT) and soleus
muscle (SM). On day 3 post-birth, pups were divided into groups of ten or three
(SL). On day 22, rats were split into sedentary (S and SLS) and exercise (E and
SLE) groups. The rats swam three times/week carrying a load for 30 min. In the
first week, they swam without a load; in the 2nd week, they carried a load
equivalent to 2% of their body weight; from the 3rd week to the final week, they
carried a 5% body load. At 85 days of age, an insulin tolerance test was
performed in some rats. At 90 days of age, rats were killed, and blood was
harvested for plasma glucose, cholesterol, and triacylglycerol measurements.
Mesenteric, epididymal, retroperitoneal, and brown adipose tissues were removed
and weighed. SM and AT were incubated in the Krebs-Ringer bicarbonate buffer,
5.5 mM glucose for 1 h with or without 10 mU/mL insulin. Comparison between the
groups was performed by 3-way ANOVA followed by the Tukey
post-hoc test. Sedentary, overfed rats had greater body
mass, more visceral fat, lower lactate production, and insulin resistance. Early
introduction of exercise reduced plasma cholesterol and contained the deposition
of white adipose tissue and insulin resistance. In conclusion, the early
introduction of exercise prevents the effects of obesity on glucose metabolism
in adulthood in this rat model.
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Affiliation(s)
- S V Fischer
- Departamento de Fisiologia, Setor de Ciências Biológicas, Universidade Federal do Paraná, Curitiba, PR, Brasil
| | - M H Appel
- Departamento de Biologia Estrutural, Molecular e Genética, Universidade Estadual de Ponta Grossa, Ponta Grossa, PR, Brasil
| | - K Naliwaiko
- Departamento de Biologia Celular, Setor de Ciências Biológicas, Universidade Federal do Paraná, Curitiba, PR, Brasil
| | - D D Pagliosa
- Departamento de Fisiologia, Setor de Ciências Biológicas, Universidade Federal do Paraná, Curitiba, PR, Brasil
| | - D N Araújo
- Departamento de Fisiologia, Setor de Ciências Biológicas, Universidade Federal do Paraná, Curitiba, PR, Brasil
| | - A E Capote
- Departamento de Fisiologia, Setor de Ciências Biológicas, Universidade Federal do Paraná, Curitiba, PR, Brasil
| | - B A C Oliveira
- Departamento de Biologia Celular, Setor de Ciências Biológicas, Universidade Federal do Paraná, Curitiba, PR, Brasil
| | - L C Fernandes
- Departamento de Biologia Celular, Setor de Ciências Biológicas, Universidade Federal do Paraná, Curitiba, PR, Brasil
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EFR3 and phosphatidylinositol 4-kinase IIIα regulate insulin-stimulated glucose transport and GLUT4 dispersal in 3T3-L1 adipocytes. Biosci Rep 2022; 42:231469. [PMID: 35735144 PMCID: PMC9272592 DOI: 10.1042/bsr20221181] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 06/21/2022] [Accepted: 06/22/2022] [Indexed: 11/17/2022] Open
Abstract
Insulin stimulates glucose transport in muscle and adipocytes. This is achieved by regulated delivery of intracellular glucose transporter (GLUT4)-containing vesicles to the plasma membrane where they dock and fuse, resulting in increased cell surface GLUT4 levels. Recent work identified a potential further regulatory step, in which insulin increases the dispersal of GLUT4 in the plasma membrane away from the sites of vesicle fusion. EFR3 is a scaffold protein that facilitates localization of phosphatidylinositol 4-kinase type IIIα to the cell surface. Here we show that knockdown of EFR3 or phosphatidylinositol 4-kinase type IIIα impairs insulin-stimulated glucose transport in adipocytes. Using direct stochastic reconstruction microscopy, we also show that EFR3 knockdown impairs insulin stimulated GLUT4 dispersal in the plasma membrane. We propose that EFR3 plays a previously unidentified role in controlling insulin-stimulated glucose transport by facilitating dispersal of GLUT4 within the plasma membrane.
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Li W, Yuan X, He X, Yang L, Wu Y, Deng X, Zeng Y, Hu K, Tang B. The downregulation of miR-22 and miR-372 may contribute to gestational diabetes mellitus through regulating glucose metabolism via the PI3K/AKT/GLUT4 pathway. J Clin Lab Anal 2022; 36:e24557. [PMID: 35712865 PMCID: PMC9279990 DOI: 10.1002/jcla.24557] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 05/07/2022] [Accepted: 05/25/2022] [Indexed: 11/27/2022] Open
Abstract
Background Identifying effective regulatory mechanisms will be significant for Gestational diabetes mellitus (GDM) diagnosis and treatment. Methods The expressions of miR‐22 and miR‐372 in placenta tissues from 75 pregnant women with GDM and 75 matched healthy controls and HRT8/SVneo cells (a model of insulin resistance) were analyzed by qPCR. The expressions of PI3K, AKT, IRS, and GLUT4 in high glucose‐treated HRT8/SVneo cells transfected with miR‐22 or miR‐372 mimics or inhibitors was assessed by Western blot. A luciferase gene reporter assay was employed to verify miRNAs' target genes. Results The expressions of miR‐22 and miR‐372 in placental tissues from GDM patients and HRT8/SVneo cells were significantly decreased compared with the respective controls. The GLUT4 expression was significantly decreased in the placenta tissues of GDM and HRT8/SVneo cells with high glucose transfected with miR‐22 and miR‐372 inhibitors. We confirmed that SLC2A4, the gene encoding GLUT4, was a direct target of miR‐22 and miR‐372. In this study, we report that the lower expressions of miR‐22 and miR‐372 in placental tissue from GDM patients. Conclusion Our results further suggested that the downregulations of miR‐22 and miR‐372 may contribute to GDM through regulating the PI3K/GLUT4 pathway.
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Affiliation(s)
- Wei Li
- Department of Endocrinology, Armed Police Corps Hospital of Guangdong Province, Guangzhou, China
| | - Xianlin Yuan
- Department of Food and Biological Engineering, Guangdong Industry Technical College, Guangzhou, China
| | - Xin He
- Department of Anesthesiology, Xiangya Hospital, Central South University, Changsha, China
| | - Li Yang
- Department of Endocrinology, Armed Police Corps Hospital of Guangdong Province, Guangzhou, China
| | - Yingyuan Wu
- Department of Obstetrics and Gynecology, Armed Police Corps Hospital of Guangdong Province, Guangzhou, China
| | - Xiaofeng Deng
- Department of Central Sterile Supply, Armed Police Corps Hospital of Guangdong Province, Guangzhou, China
| | - Yiwen Zeng
- Department of Endocrinology, Armed Police Corps Hospital of Guangdong Province, Guangzhou, China
| | - Kesheng Hu
- Department of Clinical Laboratory, Armed Police Corps Hospital of Guangdong Province, Guangzhou, China
| | - Bo Tang
- Department of Clinical Pharmacy, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
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Yang FR, Zhu XX, Kong MW, Zou XJ, Ma QY, Li XJ, Chen JX. Xiaoyaosan Exerts Antidepressant-Like Effect by Regulating Autophagy Involves the Expression of GLUT4 in the Mice Hypothalamic Neurons. Front Pharmacol 2022; 13:873646. [PMID: 35784760 PMCID: PMC9243304 DOI: 10.3389/fphar.2022.873646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Accepted: 05/05/2022] [Indexed: 11/30/2022] Open
Abstract
Many studies have proven that autophagy plays a pivotal role in the development of depression and it also affects the expression of GLUT4 in the hypothalamus. Xiaoyaosan has been shown to exert antidepressant effects in a variety of ways, but its underlying mechanism by which Xiaoyaosan regulates autophagy as well as GLUT4 in the hypothalamus remains unclear. Thus, in this study, we established a mouse model of depression induced by chronic unpredictable mild stress (CUMS), and set up autophagy blockade as a control to explore whether Xiaoyaosan exerts antidepressant effect by affecting autophagy. We examined the effects of Xiaoyaosan on behaviors exhibited during the open field test, tail suspension test and sucrose preference test, and the changes in autophagy in hypothalamic neurons as well as changes in GLUT4 and the related indicators of glucose metabolism in CUMS-induced depressive mouse model. We found that CUMS- and 3-MA-induced mice exhibited depressive-like behavioral changes, with decreased LC3 expression and increased p62 expression, suggesting decreased levels of autophagy in the mouse hypothalamus. The expression of GLUT4 was also decreased, and it was closely related to the level of autophagy through Rab8 and Rab10. Nevertheless, after the intervention of Xiaoyaosan, the above changes were effectively reversed. These results show that Xiaoyaosan can regulate the autophagy in hypothalamic neurons and the expression of GLUT4 in depressed mice.
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Affiliation(s)
- Fu-Rong Yang
- School of Basic Medical Science, Hubei University of Chinese Medicine, Wuhan, China
- Hubei Provincial Key Laboratory of Occurrence and Intervention of Rheumatic Diseases, Hubei Minzu University, Enshi, China
| | - Xiao-Xu Zhu
- School of Basic Medical Science, Hubei University of Chinese Medicine, Wuhan, China
| | - Ming-Wang Kong
- School of Basic Medical Science, Hubei University of Chinese Medicine, Wuhan, China
| | - Xiao-Juan Zou
- School of Basic Medical Science, Hubei University of Chinese Medicine, Wuhan, China
| | - Qing-Yu Ma
- Formula-Pattern Research Center, School of Traditional Chinese Medicine, Jinan University, Guangzhou, China
| | - Xiao-Juan Li
- Formula-Pattern Research Center, School of Traditional Chinese Medicine, Jinan University, Guangzhou, China
- *Correspondence: Xiao-Juan Li, ; Jia-Xu Chen,
| | - Jia-Xu Chen
- Formula-Pattern Research Center, School of Traditional Chinese Medicine, Jinan University, Guangzhou, China
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
- *Correspondence: Xiao-Juan Li, ; Jia-Xu Chen,
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