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Alves-Silva T, Húngaro TG, Freitas-Lima LC, de Melo Arthur G, Arruda AC, Santos RB, Oyama LM, Mori MA, Bader M, Araujo RC. Kinin B1 receptor controls maternal adiponectin levels and influences offspring weight gain. iScience 2023; 26:108409. [PMID: 38058311 PMCID: PMC10696114 DOI: 10.1016/j.isci.2023.108409] [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: 03/09/2023] [Revised: 06/16/2023] [Accepted: 11/03/2023] [Indexed: 12/08/2023] Open
Abstract
Given the importance of the kinin B1 receptor in insulin and leptin hormonal regulation, which in turn is crucial in maternal adaptations to ensure nutrient supply to the fetus, we investigated the role of this receptor in maternal metabolism and fetoplacental development. Wild-type and kinin B1 receptor-deficient (B1KO) female mice were mated with male mice of the opposite genotype. Consequently, the entire litter was heterozygous for kinin B1 receptor, ensuring that there would be no influence of offspring genotype on the maternal phenotype. Maternal kinin B1 receptor blockade reduces adiponectin secretion by adipose tissue ex vivo, consistent with lower adiponectin levels in pregnant B1KO mice. Furthermore, fasting insulinemia also increased, which was associated with placental insulin resistance, reduced placental glycogen accumulation, and heavier offspring. Therefore, we propose the combination of chronic hyperinsulinemia and reduced adiponectin secretion in B1KO female mice create a maternal obesogenic environment that results in heavier pups.
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Affiliation(s)
- Thaís Alves-Silva
- Laboratory of Genetics and Exercise Metabolism, Molecular Biology Program, Biophysics Department, Federal University of São Paulo (UNIFESP), São Paulo 04039-032, Brazil
- Max-Delbrück Center for Molecular Medicine (MDC), Campus Berlin-Buch, 13125 Berlin, Germany
| | - Talita G.R. Húngaro
- Laboratory of Genetics and Exercise Metabolism, Nephrology Program, Biophysics Department, Federal University of São Paulo (UNIFESP), São Paulo 04039-032, Brazil
| | - Leandro C. Freitas-Lima
- Laboratory of Genetics and Exercise Metabolism, Molecular Biology Program, Biophysics Department, Federal University of São Paulo (UNIFESP), São Paulo 04039-032, Brazil
| | - Gabriel de Melo Arthur
- Laboratory of Genetics and Exercise Metabolism, Molecular Biology Program, Biophysics Department, Federal University of São Paulo (UNIFESP), São Paulo 04039-032, Brazil
| | - Adriano C. Arruda
- Laboratory of Genetics and Exercise Metabolism, Nephrology Program, Biophysics Department, Federal University of São Paulo (UNIFESP), São Paulo 04039-032, Brazil
| | - Raisa B. Santos
- Laboratory of Genetics and Exercise Metabolism, Nephrology Program, Biophysics Department, Federal University of São Paulo (UNIFESP), São Paulo 04039-032, Brazil
| | - Lila M. Oyama
- Laboratory of Nutrition and Endocrine Physiology, Physiology Department, Federal University of São Paulo (UNIFESP), São Paulo 04023-901, Brazil
| | - Marcelo A.S. Mori
- Laboratory of Aging Biology, Department of Biochemistry and Tissue Biology, Institute of Biology, University of Campinas (UNICAMP), São Paulo 13083-862, Brazil
| | - Michael Bader
- Max-Delbrück Center for Molecular Medicine (MDC), Campus Berlin-Buch, 13125 Berlin, Germany
- DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, Berlin, Germany
- Institute for Biology, University of Lübeck, Lübeck, Germany
- Charité University Medicine Berlin, Berlin, Germany
| | - Ronaldo C. Araujo
- Laboratory of Genetics and Exercise Metabolism, Molecular Biology Program, Biophysics Department, Federal University of São Paulo (UNIFESP), São Paulo 04039-032, Brazil
- Laboratory of Genetics and Exercise Metabolism, Nephrology Program, Biophysics Department, Federal University of São Paulo (UNIFESP), São Paulo 04039-032, Brazil
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2
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Guo H, Wu H, Hou Y, Hu P, Du J, Cao L, Yang R, Dong X, Li Z. Oat β-D-glucan ameliorates type II diabetes through TLR4/PI3K/AKT mediated metabolic axis. Int J Biol Macromol 2023; 249:126039. [PMID: 37516222 DOI: 10.1016/j.ijbiomac.2023.126039] [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: 11/25/2022] [Revised: 07/19/2023] [Accepted: 07/26/2023] [Indexed: 07/31/2023]
Abstract
Diabetes is one of the major global public health problems. Our previous results found that oat β-D-glucan exhibited ameliorative effects on diabetic mice, but the underlying mechanism is unclear. The present study indicates that oat β-D-glucan increased glycogen content, decreased glycogen synthase (GS) phosphorylation and increased hepatic glycogen synthase kinase 3β (GSK3β) phosphorylation for glycogen synthesis via PI3K/AKT/GSK3-mediated GS activation. Moreover, oat β-D-glucan inhibited gluconeogenesis through the PI3K/AKT/Foxo1-mediated phosphoenolpyruvate carboxykinase (PEPCK) decrease. In addition, oat β-D-glucan enhanced glucose catabolism through elevated protein levels of COQ9, UQCRC2, COXIV and ATP5F complexes involved in oxidative phosphorylation, as well as that of TFAM, a key regulator of mitochondrial gene expression. Importantly, our results showed that oat β-D-glucan maintained hepatic glucose balance via TLR4-mediated intracellular signal. After TLR4 blocking with anti-TLR4 antibody, oat β-D-glucan had almost no effect on high glucose-induced HepG2 cells. These data revealed that oat β-D-glucan maintains glucose balance by regulating the TLR4/PI3K/AKT signal pathway.
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Affiliation(s)
- Huiqin Guo
- Institute of Biotechnology, The Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Shanxi University, Taiyuan 030002, China; Third Hospital of Shanxi Medical University, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Taiyuan 030032, China
| | - Haili Wu
- College of Life Science, Shanxi University, Taiyuan 030002, China
| | - YanBing Hou
- College of Life Science, Shanxi University, Taiyuan 030002, China
| | - Pengli Hu
- College of Life Science, Shanxi University, Taiyuan 030002, China
| | - Jine Du
- Institute of Biotechnology, The Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Shanxi University, Taiyuan 030002, China
| | - Lijia Cao
- Institute of Biotechnology, The Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Shanxi University, Taiyuan 030002, China
| | - Ruipeng Yang
- Institute of Biotechnology, The Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Shanxi University, Taiyuan 030002, China
| | - Xiushan Dong
- Department of General Surgery, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Taiyuan 030000, China
| | - Zhuoyu Li
- Institute of Biotechnology, The Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Shanxi University, Taiyuan 030002, China.
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3
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Teli DM, Gajjar AK. Glycogen synthase kinase-3: A potential target for diabetes. Bioorg Med Chem 2023; 92:117406. [PMID: 37536264 DOI: 10.1016/j.bmc.2023.117406] [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: 03/08/2023] [Revised: 05/16/2023] [Accepted: 07/03/2023] [Indexed: 08/05/2023]
Abstract
Elevated circulating glucose level due to β-cell dysfunction has been a key marker of Type-II diabetes. Glycogen synthase kinase-3 (GSK-3) has been recognized as an enzyme involved in the control of glycogen metabolism. Consequently, inhibitors of GSK-3 have been explored for anti-diabetic effects in vitro and in animal models. Further, the mechanisms governing the regulation of this enzyme have been elucidated by means of a combination of structural and cellular biological investigations. This review article examines the structural analysis of GSK-3 as well as molecular modeling reports from numerous researchers in the context of the design and development of GSK-3 inhibitors. This article centers on the signaling pathway of GSK-3 relevant to its potential as a target for diabetes and discusses advancements till date on different molecular modification approaches used by researchers in the development of novel GSK-3 inhibitors as potential therapeutics for the treatment of Type II diabetes.
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Affiliation(s)
- Divya M Teli
- Department of Pharmaceutical Chemistry and Quality Assurance, L. M. College of Pharmacy, Ahmedabad, Gujarat 380009, India
| | - Anuradha K Gajjar
- Department of Pharmaceutical Chemistry and Quality Assurance, L. M. College of Pharmacy, Ahmedabad, Gujarat 380009, India.
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4
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Amaral B, Capacci A, Anderson T, Tezer C, Bajrami B, Lulla M, Lucas B, Chodaparambil JV, Marcotte D, Kumar PR, Murugan P, Spilker K, Cullivan M, Wang T, Peterson AC, Enyedy I, Ma B, Chen T, Yousaf Z, Calhoun M, Golonzhka O, Dillon GM, Koirala S. Elucidation of the GSK3α Structure Informs the Design of Novel, Paralog-Selective Inhibitors. ACS Chem Neurosci 2023; 14:1080-1094. [PMID: 36812145 PMCID: PMC10020971 DOI: 10.1021/acschemneuro.2c00476] [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: 02/24/2023] Open
Abstract
Glycogen synthase kinase 3 (GSK3) remains a therapeutic target of interest for diverse clinical indications. However, one hurdle in the development of small molecule GSK3 inhibitors has been safety concerns related to pan-inhibition of both GSK3 paralogs, leading to activation of the Wnt/β-catenin pathway and potential for aberrant cell proliferation. Development of GSK3α or GSK3β paralog-selective inhibitors that could offer an improved safety profile has been reported but further advancement has been hampered by the lack of structural information for GSK3α. Here we report for the first time the crystal structure for GSK3α, both in apo form and bound to a paralog-selective inhibitor. Taking advantage of this new structural information, we describe the design and in vitro testing of novel compounds with up to ∼37-fold selectivity for GSK3α over GSK3β with favorable drug-like properties. Furthermore, using chemoproteomics, we confirm that acute inhibition of GSK3α can lower tau phosphorylation at disease-relevant sites in vivo, with a high degree of selectivity over GSK3β and other kinases. Altogether, our studies advance prior efforts to develop GSK3 inhibitors by describing GSK3α structure and novel GSK3α inhibitors with improved selectivity, potency, and activity in disease-relevant systems.
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Affiliation(s)
- Brenda Amaral
- Departments of Research, Biogen, 225 Binney Street, Cambridge, Massachusetts 02142, United States
| | - Andrew Capacci
- Departments of Medicinal Chemistry, Biogen, 225 Binney Street, Cambridge, Massachusetts 02142, United States
| | - Trip Anderson
- Departments of Research, Biogen, 225 Binney Street, Cambridge, Massachusetts 02142, United States
| | - Ceren Tezer
- Departments of Research, Biogen, 225 Binney Street, Cambridge, Massachusetts 02142, United States
| | - Bekim Bajrami
- Departments of Chemical Biology and Proteomics, Biogen, 225 Binney Street, Cambridge, Massachusetts 02142, United States
| | - Mukesh Lulla
- Departments of Drug Metabolism and Pharmacokinetics, Biogen, 225 Binney Street, Cambridge, Massachusetts 02142, United States
| | - Brian Lucas
- Departments of Medicinal Chemistry, Biogen, 225 Binney Street, Cambridge, Massachusetts 02142, United States
| | - Jayanth V Chodaparambil
- Departments of Physical Biochemistry, Biogen, 225 Binney Street, Cambridge, Massachusetts 02142, United States
| | - Douglas Marcotte
- Departments of Physical Biochemistry, Biogen, 225 Binney Street, Cambridge, Massachusetts 02142, United States
| | - P Rajesh Kumar
- Departments of Physical Biochemistry, Biogen, 225 Binney Street, Cambridge, Massachusetts 02142, United States
| | - Paramasivam Murugan
- Departments of Bioassays, Biogen, 225 Binney Street, Cambridge, Massachusetts 02142, United States
| | - Kerri Spilker
- Departments of Physical Biochemistry, Biogen, 225 Binney Street, Cambridge, Massachusetts 02142, United States
| | - Mike Cullivan
- Departments of Physical Biochemistry, Biogen, 225 Binney Street, Cambridge, Massachusetts 02142, United States
| | - Ti Wang
- Departments of Bioassays, Biogen, 225 Binney Street, Cambridge, Massachusetts 02142, United States
| | - Anton C Peterson
- Departments of Medicinal Chemistry, Biogen, 225 Binney Street, Cambridge, Massachusetts 02142, United States
| | - Istvan Enyedy
- Departments of Medicinal Chemistry, Biogen, 225 Binney Street, Cambridge, Massachusetts 02142, United States
| | - Bin Ma
- Departments of Medicinal Chemistry, Biogen, 225 Binney Street, Cambridge, Massachusetts 02142, United States
| | - TeYu Chen
- Departments of Medicinal Chemistry, Biogen, 225 Binney Street, Cambridge, Massachusetts 02142, United States
| | - Zain Yousaf
- Departments of Medicinal Chemistry, Biogen, 225 Binney Street, Cambridge, Massachusetts 02142, United States
| | - Michael Calhoun
- Departments of Research, Biogen, 225 Binney Street, Cambridge, Massachusetts 02142, United States
| | - Olga Golonzhka
- Departments of Research, Biogen, 225 Binney Street, Cambridge, Massachusetts 02142, United States
| | - Gregory M Dillon
- Departments of Research, Biogen, 225 Binney Street, Cambridge, Massachusetts 02142, United States
| | - Samir Koirala
- Departments of Research, Biogen, 225 Binney Street, Cambridge, Massachusetts 02142, United States
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5
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Cabezas D, Mellado G, Espinoza N, Gárate JA, Morales C, Castro-Alvarez A, Matos MJ, Mellado M, Mella J. In silico approaches to develop new phenyl-pyrimidines as glycogen synthase kinase 3 (GSK-3) inhibitors with halogen-bonding capabilities: 3D-QSAR CoMFA/CoMSIA, molecular docking and molecular dynamics studies. J Biomol Struct Dyn 2023; 41:13250-13259. [PMID: 36718094 DOI: 10.1080/07391102.2023.2172457] [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: 10/19/2022] [Accepted: 01/19/2023] [Indexed: 02/01/2023]
Abstract
Glycogen synthase kinase 3 (GSK-3) is involved in different diseases, such as manic-depressive illness, Alzheimer's disease and cancer. Studies have shown that insulin inhibits GSK-3 to keep glycogen synthase active. Inhibiting GSK-3 may have an indirect pro-insulin effect by favouring glycogen synthesis. Therefore, the development of GSK-3 inhibitors can be a useful alternative for the treatment of type II diabetes. Aminopyrimidine derivatives already proved to be interesting GSK-3 inhibitors. In the current study, comparative molecular field analysis (CoMFA) and comparative molecular similarity indices analysis (CoMSIA) have been performed on a series of 122 aminopyrimidine derivatives in order to generate a robust model for the rational design of new compounds with promising antidiabetic activity. The q2 values obtained for the best CoMFA and CoMSIA models have been 0.563 and 0.598, respectively. In addition, the r2 values have been 0.823 and 0.925 for CoMFA and CoMSIA, respectively. The models were statistically validated, and from the contour maps analysis, a proposal of 10 new compounds has been generated, with predicted pIC50 higher than 9. The final contribution of our work is that: (a) we provide an extensive structure-activity relationship for GSK-3 inhibitory pyrimidines; and (b) these models may speed up the discovery of GSK-3 inhibitors based on the aminopyrimidine scaffold. Finally, we carried out docking and molecular dynamics studies of the two best candidates, which were shown to establish halogen-bond interactions with the enzyme.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- David Cabezas
- Instituto de Química y Bioquímica, Facultad de Ciencias, Universidad de Valparaíso, Valparaíso, Chile
| | - Guido Mellado
- Centro Interdisciplinario de Neurociencias de Valparaíso, Facultad de Ciencias, Universidad de Valparaíso, Valparaíso, Chile
| | - Nicolás Espinoza
- Centro Interdisciplinario de Neurociencias de Valparaíso, Facultad de Ciencias, Universidad de Valparaíso, Valparaíso, Chile
| | - José Antonio Gárate
- Centro Interdisciplinario de Neurociencias de Valparaíso, Facultad de Ciencias, Universidad de Valparaíso, Valparaíso, Chile
- Centro Científico y Tecnológico de Excelencia Ciencia y Vida, Facultad de Ingeniería, Arquitectura y Diseño, Universidad San Sebastián, Santiago, Chile
- Millennium Nucleus in NanoBioPhysics, Universidad San Sebastián, Santiago, Chile
| | - César Morales
- Centro Integrativo de Biología y Química Aplicada (CIBQA), Universidad Bernardo OHiggins, Santiago, Chile
| | - Alejandro Castro-Alvarez
- Departamento de Ciencias Preclínicas, Facultad de Medicina, Universidad de La Frontera, Temuco, Chile
| | - Maria J Matos
- Centro de Investigação em Química da Universidade do Porto (CIQUP), Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Porto, Portugal
- Departamento de Química Orgánica, Facultad de Farmacia, Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - Marco Mellado
- Instituto de Investigación y Postgrado, Facultad de Ciencias de la Salud, Universidad Central de Chile, Santiago, Chile
| | - Jaime Mella
- Instituto de Química y Bioquímica, Facultad de Ciencias, Universidad de Valparaíso, Valparaíso, Chile
- Centro de Investigación Farmacopea Chilena (CIFAR), Universidad de Valparaíso, Valparaíso, Chile
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6
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Lv F, Wang Y, Shan D, Guo S, Chen G, Jin L, Zheng W, Feng H, Zeng X, Zhang S, Zhang Y, Hu X, Xiao RP. Blocking MG53 S255 Phosphorylation Protects Diabetic Heart From Ischemic Injury. Circ Res 2022; 131:962-976. [PMID: 36337049 PMCID: PMC9770150 DOI: 10.1161/circresaha.122.321055] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
BACKGROUND As an integral component of cell membrane repair machinery, MG53 (mitsugumin 53) is important for cardioprotection induced by ischemia preconditioning and postconditioning. However, it also impairs insulin signaling via its E3 ligase activity-mediated ubiquitination-dependent degradation of IR (insulin receptor) and IRS1 (insulin receptor substrate 1) and its myokine function-induced allosteric blockage of IR. Here, we sought to develop MG53 into a cardioprotection therapy by separating its detrimental metabolic effects from beneficial actions. METHODS Using immunoprecipitation-mass spectrometry, site-specific mutation, in vitro kinase assay, and in vivo animal studies, we investigated the role of MG53 phosphorylation at serine 255 (S255). In particular, utilizing recombinant proteins and gene knock-in approaches, we evaluated the potential therapeutic effect of MG53-S255A mutant in treating cardiac ischemia/reperfusion injury in diabetic mice. RESULTS We identified S255 phosphorylation as a prerequisite for MG53 E3 ligase activity. Furthermore, MG53S255 phosphorylation was mediated by GSK3β (glycogen synthase kinase 3 beta) and markedly elevated in the animal models with metabolic disorders. Thus, IR-IRS1-GSK3β-MG53 formed a vicious cycle in the pathogenesis of metabolic disorders where aberrant insulin signaling led to hyper-activation of GSK3β, which in turn, phosphorylated MG53 and enhanced its E3 ligase activity, and further impaired insulin sensitivity. Importantly, S255A mutant eliminated the E3 ligase activity while retained cell protective function of MG53. Consequently, the S255A mutant, but not the wild type MG53, protected the heart against ischemia/reperfusion injury in db/db mice with advanced diabetes, although both elicited cardioprotection in normal mice. Moreover, in S255A knock-in mice, S255A mutant also mitigated ischemia/reperfusion-induced myocardial damage in the diabetic setting. CONCLUSIONS S255 phosphorylation is a biased regulation of MG53 E3 ligase activity. The MG53-S255A mutant provides a promising approach for the treatment of acute myocardial injury, especially in patients with metabolic disorders.
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Affiliation(s)
- Fengxiang Lv
- State Key Laboratory of Membrane Biology, Institute of Molecular Medicine, College of Future Technology, Peking University, Beijing, China (F.L., Y.W., D.S., S.G., G.C., L.J., W.Z., H.F., X.Z., S.Z., Y.Z., X.H., R.-P.X.)
| | - Yingfan Wang
- State Key Laboratory of Membrane Biology, Institute of Molecular Medicine, College of Future Technology, Peking University, Beijing, China (F.L., Y.W., D.S., S.G., G.C., L.J., W.Z., H.F., X.Z., S.Z., Y.Z., X.H., R.-P.X.)
| | - Dan Shan
- State Key Laboratory of Membrane Biology, Institute of Molecular Medicine, College of Future Technology, Peking University, Beijing, China (F.L., Y.W., D.S., S.G., G.C., L.J., W.Z., H.F., X.Z., S.Z., Y.Z., X.H., R.-P.X.)
| | - Sile Guo
- State Key Laboratory of Membrane Biology, Institute of Molecular Medicine, College of Future Technology, Peking University, Beijing, China (F.L., Y.W., D.S., S.G., G.C., L.J., W.Z., H.F., X.Z., S.Z., Y.Z., X.H., R.-P.X.)
| | - Gengjia Chen
- State Key Laboratory of Membrane Biology, Institute of Molecular Medicine, College of Future Technology, Peking University, Beijing, China (F.L., Y.W., D.S., S.G., G.C., L.J., W.Z., H.F., X.Z., S.Z., Y.Z., X.H., R.-P.X.)
| | - Li Jin
- State Key Laboratory of Membrane Biology, Institute of Molecular Medicine, College of Future Technology, Peking University, Beijing, China (F.L., Y.W., D.S., S.G., G.C., L.J., W.Z., H.F., X.Z., S.Z., Y.Z., X.H., R.-P.X.)
| | - Wen Zheng
- State Key Laboratory of Membrane Biology, Institute of Molecular Medicine, College of Future Technology, Peking University, Beijing, China (F.L., Y.W., D.S., S.G., G.C., L.J., W.Z., H.F., X.Z., S.Z., Y.Z., X.H., R.-P.X.)
| | - Han Feng
- State Key Laboratory of Membrane Biology, Institute of Molecular Medicine, College of Future Technology, Peking University, Beijing, China (F.L., Y.W., D.S., S.G., G.C., L.J., W.Z., H.F., X.Z., S.Z., Y.Z., X.H., R.-P.X.)
| | - Xiaohu Zeng
- State Key Laboratory of Membrane Biology, Institute of Molecular Medicine, College of Future Technology, Peking University, Beijing, China (F.L., Y.W., D.S., S.G., G.C., L.J., W.Z., H.F., X.Z., S.Z., Y.Z., X.H., R.-P.X.)
| | - Shuo Zhang
- State Key Laboratory of Membrane Biology, Institute of Molecular Medicine, College of Future Technology, Peking University, Beijing, China (F.L., Y.W., D.S., S.G., G.C., L.J., W.Z., H.F., X.Z., S.Z., Y.Z., X.H., R.-P.X.)
| | - Yan Zhang
- State Key Laboratory of Membrane Biology, Institute of Molecular Medicine, College of Future Technology, Peking University, Beijing, China (F.L., Y.W., D.S., S.G., G.C., L.J., W.Z., H.F., X.Z., S.Z., Y.Z., X.H., R.-P.X.)
| | - Xinli Hu
- State Key Laboratory of Membrane Biology, Institute of Molecular Medicine, College of Future Technology, Peking University, Beijing, China (F.L., Y.W., D.S., S.G., G.C., L.J., W.Z., H.F., X.Z., S.Z., Y.Z., X.H., R.-P.X.)
| | - Rui-Ping Xiao
- State Key Laboratory of Membrane Biology, Institute of Molecular Medicine, College of Future Technology, Peking University, Beijing, China (F.L., Y.W., D.S., S.G., G.C., L.J., W.Z., H.F., X.Z., S.Z., Y.Z., X.H., R.-P.X.)
- Peking-Tsinghua Center for Life Sciences, Beijing, China (R.-P.X.)
- Beijing City Key Laboratory of Cardiometabolic Molecular Medicine, Peking University, Beijing, China (R.-P.X.)
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7
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Pereira RM, da Cruz Rodrigues KC, Sant'Ana MR, da Rocha AL, Morelli AP, Veras ASC, Gaspar RS, da Costa Fernandes CJ, Teixeira GR, Simabuco FM, da Silva ASR, Cintra DE, Ropelle ER, Pauli JR, de Moura LP. FOXO1 is downregulated in obese mice subjected to short-term strength training. J Cell Physiol 2022; 237:4262-4274. [PMID: 36125908 DOI: 10.1002/jcp.30882] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Accepted: 08/27/2022] [Indexed: 11/09/2022]
Abstract
Obesity is a worldwide health problem and is directly associated with insulin resistance and type 2 diabetes. The liver is an important organ for the control of healthy glycemic levels, since insulin resistance in this organ reduces phosphorylation of forkhead box protein 1 (FOXO1) protein, leading to higher hepatic glucose production (HGP) and fasting hyperglycemia. Aerobic physical training is known as an important strategy in increasing the insulin action in the liver by increasing FOXO1 phosphorylation and reducing gluconeogenesis. However, little is known about the effects of strength training in this context. This study aimed to investigate the effects of short-term strength training on hepatic insulin sensitivity and glycogen synthase kinase-3β (GSK3β) and FOXO1 phosphorylation in obese (OB) mice. To achieve this goal, OB Swiss mice performed the strength training protocol (one daily session for 15 days). Short-term strength training increased the phosphorylation of protein kinase B and GSK3β in the liver after insulin stimulus and improved the control of HGP during the pyruvate tolerance test. On the other hand, sedentary OB animals reduced FOXO1 phosphorylation and increased the levels of nuclear FOXO1 in the liver, increasing the phosphoenolpyruvate carboxykinase (PEPCK) and glucose-6-phosphatase (G6Pase) content. The bioinformatics analysis also showed positive correlations between hepatic FOXO1 levels and gluconeogenic genes, reinforcing our findings. However, strength-trained animals reverted to this scenario, regardless of body adiposity changes. In conclusion, short-term strength training is an efficient strategy to enhance the insulin action in the liver of OB mice, contributing to glycemic control by reducing the activity of hepatic FOXO1 and lowering PEPCK and G6Pase contents.
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Affiliation(s)
- Rodrigo M Pereira
- School of Applied Sciences, Exercise Cell Biology Lab, School of Applied Sciences, University of Campinas, Limeira, Brazil.,School of Applied Sciences, Laboratory of Molecular Biology of Exercise, School of Applied Sciences, University of Campinas, Limeira, Brazil
| | - Kellen C da Cruz Rodrigues
- School of Applied Sciences, Exercise Cell Biology Lab, School of Applied Sciences, University of Campinas, Limeira, Brazil.,School of Applied Sciences, Laboratory of Molecular Biology of Exercise, School of Applied Sciences, University of Campinas, Limeira, Brazil
| | - Marcella R Sant'Ana
- Nutrition Division, Laboratory of Nutritional Genomics, School of Applied Sciences, University of Campinas, Limeira, Brazil
| | - Alisson L da Rocha
- Postgraduate Program in Rehabilitation and Functional Performance, Ribeirão Preto Medical School and Postgraduate Program in Physical Education and Sport, School of Physical Education and Sport of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
| | - Ana P Morelli
- Health Division, Multidisciplinary Laboratory of Food and Health, School of Applied Sciences, University of Campinas, Limeira, Brazil
| | - Allice S C Veras
- Department of Physical Education, School of Technology and Sciences, Postgraduate Program in Multicentric Physiological Sciences, São Paulo State University-UNESP, campus of Aracatuba, Presidente Prudente, Brazil.,Experimental Laboratory of Exercise Biology, State University of São Paulo-UNESP, Presidente Prudente, Brazil
| | - Rodrigo S Gaspar
- Laboratory of Cell Signaling, Obesity and Comorbidities Research Center, State University of Campinas, Campinas, Brazil
| | - Célio J da Costa Fernandes
- School of Applied Sciences, Exercise Cell Biology Lab, School of Applied Sciences, University of Campinas, Limeira, Brazil
| | - Giovana R Teixeira
- Department of Physical Education, School of Technology and Sciences, Postgraduate Program in Multicentric Physiological Sciences, São Paulo State University-UNESP, campus of Aracatuba, Presidente Prudente, Brazil.,Experimental Laboratory of Exercise Biology, State University of São Paulo-UNESP, Presidente Prudente, Brazil
| | - Fernando M Simabuco
- Health Division, Multidisciplinary Laboratory of Food and Health, School of Applied Sciences, University of Campinas, Limeira, Brazil.,Department of Biochemistry, Federal University of São Paulo, São Paulo, Brazil
| | - Adelino S R da Silva
- Postgraduate Program in Rehabilitation and Functional Performance, Ribeirão Preto Medical School and Postgraduate Program in Physical Education and Sport, School of Physical Education and Sport of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
| | - Dennys E Cintra
- Nutrition Division, Laboratory of Nutritional Genomics, School of Applied Sciences, University of Campinas, Limeira, Brazil
| | - Eduardo R Ropelle
- School of Applied Sciences, Exercise Cell Biology Lab, School of Applied Sciences, University of Campinas, Limeira, Brazil.,School of Applied Sciences, Laboratory of Molecular Biology of Exercise, School of Applied Sciences, University of Campinas, Limeira, Brazil
| | - José R Pauli
- School of Applied Sciences, Exercise Cell Biology Lab, School of Applied Sciences, University of Campinas, Limeira, Brazil.,School of Applied Sciences, Laboratory of Molecular Biology of Exercise, School of Applied Sciences, University of Campinas, Limeira, Brazil
| | - Leandro P de Moura
- School of Applied Sciences, Exercise Cell Biology Lab, School of Applied Sciences, University of Campinas, Limeira, Brazil.,School of Applied Sciences, Laboratory of Molecular Biology of Exercise, School of Applied Sciences, University of Campinas, Limeira, Brazil
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8
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Seal SV, Henry M, Pajot C, Holuka C, Bailbé D, Movassat J, Darnaudéry M, Turner JD. A Holistic View of the Goto-Kakizaki Rat Immune System: Decreased Circulating Immune Markers in Non- Obese Type 2 Diabetes. Front Immunol 2022; 13:896179. [PMID: 35677049 PMCID: PMC9168276 DOI: 10.3389/fimmu.2022.896179] [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: 03/14/2022] [Accepted: 04/25/2022] [Indexed: 11/22/2022] Open
Abstract
Type-2 diabetes is a complex disorder that is now considered to have an immune component, with functional impairments in many immune cell types. Type-2 diabetes is often accompanied by comorbid obesity, which is associated with low grade inflammation. However,the immune status in Type-2 diabetes independent of obesity remains unclear. Goto-Kakizaki rats are a non-obese Type-2 diabetes model. The limited evidence available suggests that Goto-Kakizaki rats have a pro-inflammatory immune profile in pancreatic islets. Here we present a detailed overview of the adult Goto-Kakizaki rat immune system. Three converging lines of evidence: fewer pro-inflammatory cells, lower levels of circulating pro-inflammatory cytokines, and a clear downregulation of pro-inflammatory signalling in liver, muscle and adipose tissues indicate a limited pro-inflammatory baseline immune profile outside the pancreas. As Type-2 diabetes is frequently associated with obesity and adipocyte-released inflammatory mediators, the pro-inflammatory milieu seems not due to Type-2 diabetes per se; although this overall reduction of immune markers suggests marked immune dysfunction in Goto-Kakizaki rats.
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Affiliation(s)
- Snehaa V Seal
- Department of Infection and Immunity, Luxembourg Institute of Health (LIH), Esch-sur-Alzette, Luxembourg.,Faculty of Science, Technology and Medicine, University of Luxembourg, Esch-sur-Alzette, Luxembourg
| | - Mathilde Henry
- Institut National de Recherche Pour l'agriculture, l'alimentation et l'environnement (INRAE), Bordeaux Institut National Polytechnique (INP), NutriNeuro, Unité Mixte de Recherche (UMR) 1286, University of Bordeaux, Bordeaux, France
| | - Clémentine Pajot
- Institut National de Recherche Pour l'agriculture, l'alimentation et l'environnement (INRAE), Bordeaux Institut National Polytechnique (INP), NutriNeuro, Unité Mixte de Recherche (UMR) 1286, University of Bordeaux, Bordeaux, France
| | - Cyrielle Holuka
- Department of Infection and Immunity, Luxembourg Institute of Health (LIH), Esch-sur-Alzette, Luxembourg.,Faculty of Science, Technology and Medicine, University of Luxembourg, Esch-sur-Alzette, Luxembourg
| | - Danielle Bailbé
- Université de Paris, Laboratoire B2PE (Biologie et Pathologie du Pancréas Endocrine), Unité BFA (Biologie Fonctionnelle et Adaptative), Centre National de la Recherche Scientifique -Unité Mixte de Recherche (CNRS UMR) 8251, Paris, France
| | - Jamileh Movassat
- Université de Paris, Laboratoire B2PE (Biologie et Pathologie du Pancréas Endocrine), Unité BFA (Biologie Fonctionnelle et Adaptative), Centre National de la Recherche Scientifique -Unité Mixte de Recherche (CNRS UMR) 8251, Paris, France
| | - Muriel Darnaudéry
- Institut National de Recherche Pour l'agriculture, l'alimentation et l'environnement (INRAE), Bordeaux Institut National Polytechnique (INP), NutriNeuro, Unité Mixte de Recherche (UMR) 1286, University of Bordeaux, Bordeaux, France
| | - Jonathan D Turner
- Department of Infection and Immunity, Luxembourg Institute of Health (LIH), Esch-sur-Alzette, Luxembourg
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9
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Arciniegas Ruiz S, Rippin I, Eldar-Finkelman H. Prospects in GSK-3 Signaling: From Cellular Regulation to Disease Therapy. Cells 2022; 11:cells11101618. [PMID: 35626655 PMCID: PMC9139866 DOI: 10.3390/cells11101618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Accepted: 04/26/2022] [Indexed: 02/01/2023] Open
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10
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Yang L, Wang D, Zhang Z, Jiang Y, Liu Y. Isoliquiritigenin alleviates diabetic symptoms via activating AMPK and inhibiting mTORC1 signaling in diet-induced diabetic mice. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2022; 98:153950. [PMID: 35114453 DOI: 10.1016/j.phymed.2022.153950] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 01/09/2022] [Accepted: 01/15/2022] [Indexed: 06/14/2023]
Abstract
PURPOSE To determine the effects of isoliquiritigenin (ISL), a chalcone compound isolated from licorice, on type 2 diabetes mellitus (T2DM). MATERIALS AND METHODS 8-week-old C7BL/6 mice were used to establish the T2DM animal model by feeding with high-fat-high-glucose diet (HFD) combined with intraperitoneal injection of streptozotocin. The animals were treated with ISL for 3 weeks. Blood glucose levels, oral glucose tolerance, and insulin tolerance were examined, serum parameters were determined, histologic sections were prepared, activities of enzymes related to glucolipid metabolism were analyzed, and the mitochondrial function was investigated to evaluate effects of ISL on metabolism. The underlying mechanisms of ISL alleviating insulin resistance and restoring metabolic homeostasis were analyzed in HepG2 and INS-1 cells. RESULTS ISL exhibits a potent activity in relieving hyperglycemia of type 2 diabetic mice. It alleviates insulin resistance and restores metabolic homeostasis without obvious adversary effects in HFD-induced diabetic mice. The metabolic benefits of ISL treatment include promoting hepatic glycogenesis, inhibiting hepatic lipogenesis, reducing hepatic steatosis, and sensitizing insulin signaling. Mechanistically, ISL activates adenosine monophosphate-activated protein kinase (AMPK) and inhibits mammalian target of rapamycin complex 1 (mTORC1). It also suppresses mitochondrial function and reduces ATP production. CONCLUSION Our findings demonstrate that ISL is able to significantly reduce blood glucose level and alleviate insulin resistance without obvious side effects in diabetic mice, hence uncovering a great potential of ISL as a novel drug candidate in prevention and treatment of T2DM.
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Affiliation(s)
- Lin Yang
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing 102488, China
| | - Doudou Wang
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing 102488, China
| | - Zhixin Zhang
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing 102488, China
| | - Yu Jiang
- Department of Pharmacology and Chemical Biology, School of Medicine, University of Pittsburgh, PA 15261, USA.
| | - Ying Liu
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing 102488, China.
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11
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Zazueta C, Jimenez-Uribe AP, Pedraza-Chaverri J, Buelna-Chontal M. Genetic Variations on Redox Control in Cardiometabolic Diseases: The Role of Nrf2. Antioxidants (Basel) 2022; 11:antiox11030507. [PMID: 35326157 PMCID: PMC8944632 DOI: 10.3390/antiox11030507] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Revised: 03/01/2022] [Accepted: 03/04/2022] [Indexed: 02/07/2023] Open
Abstract
The transcription factor Nrf2 is a master regulator of multiple cytoprotective genes that maintain redox homeostasis and exert anti-inflammatory functions. The Nrf2-Keap1 signaling pathway is a paramount target of many cardioprotective strategies, because redox homeostasis is essential in cardiovascular health. Nrf2 gene variations, including single nucleotide polymorphisms (SNPs), are correlated with cardiometabolic diseases and drug responses. SNPs of Nrf2, KEAP1, and other related genes can impair the transcriptional activation or the activity of the resulting protein, exerting differential susceptibility to cardiometabolic disease progression and prevalence. Further understanding of the implications of Nrf2 polymorphisms on basic cellular processes involved in cardiometabolic diseases progression and prevalence will be helpful to establish more accurate protective strategies. This review provides insight into the association between the polymorphisms of Nrf2-related genes with cardiometabolic diseases. We also briefly describe that SNPs of Nrf2-related genes are potential modifiers of the pharmacokinetics that contribute to the inter-individual variability.
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Affiliation(s)
- Cecilia Zazueta
- Departmento de Biomedicina Cardiovascular, Instituto Nacional de Cardiología, I.Ch., Mexico City 14080, Mexico;
| | - Alexis Paulina Jimenez-Uribe
- Departamento de Biología, Facultad de Química, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico; (A.P.J.-U.); (J.P.-C.)
| | - José Pedraza-Chaverri
- Departamento de Biología, Facultad de Química, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico; (A.P.J.-U.); (J.P.-C.)
| | - Mabel Buelna-Chontal
- Departmento de Biomedicina Cardiovascular, Instituto Nacional de Cardiología, I.Ch., Mexico City 14080, Mexico;
- Correspondence:
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12
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Gupte M, Tousif S, Lemon JJ, Toro Cora A, Umbarkar P, Lal H. Isoform-Specific Role of GSK-3 in High Fat Diet Induced Obesity and Glucose Intolerance. Cells 2022; 11:cells11030559. [PMID: 35159367 PMCID: PMC8834358 DOI: 10.3390/cells11030559] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 01/26/2022] [Accepted: 02/01/2022] [Indexed: 02/07/2023] Open
Abstract
Obesity-associated metabolic disorders are rising to pandemic proportions; hence, there is an urgent need to identify underlying molecular mechanisms. Glycogen synthase kinase-3 (GSK-3) signaling is highly implicated in metabolic diseases. Furthermore, GSK-3 expression and activity are increased in Type 2 diabetes patients. However, the isoform-specific role of GSK-3 in obesity and glucose intolerance is unclear. Pharmacological GSK-3 inhibitors are not isoform-specific, and tissue-specific genetic models are of limited value to predict the clinical outcome of systemic inhibiion. To overcome these limitations, we created novel mouse models of ROSA26CreERT2-driven, tamoxifen-inducible conditional deletion of GSK-3 that allowed us to delete the gene globally in an isoform-specific and temporal manner. Isoform-specific GSK-3 KOs and littermate controls were subjected to a 16-week high-fat diet (HFD) protocol. On an HFD, GSK-3α KO mice had a significantly lower body weight and modest improvement in glucose tolerance compared to their littermate controls. In contrast, GSK-3β-deletion-mediated improved glucose tolerance was evident much earlier in the timeline and extended up to 12 weeks post-HFD. However, this protective effect weakened after chronic HFD (16 weeks) when GSK-3β KO mice had a significantly higher body weight compared to controls. Importantly, GSK-3β KO mice on a control diet maintained significant improvement in glucose tolerance even after 16 weeks. In summary, our novel mouse models allowed us to delineate the isoform-specific role of GSK-3 in obesity and glucose tolerance. From a translational perspective, our findings underscore the importance of maintaining a healthy weight in patients receiving lithium therapy, which is thought to work by GSK-3 inhibition mechanisms.
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Affiliation(s)
- Manisha Gupte
- Department of Biology, Austin Peay State University, Clarksville, TN 37044, USA;
- Correspondence: (M.G.); (H.L.)
| | - Sultan Tousif
- Division of Cardiovascular Diseases, The University of Alabama at Birmingham (UAB), Birmingham, AL 35233, USA; (S.T.); (A.T.C.); (P.U.)
| | - Jacob J. Lemon
- Department of Biology, Austin Peay State University, Clarksville, TN 37044, USA;
| | - Angelica Toro Cora
- Division of Cardiovascular Diseases, The University of Alabama at Birmingham (UAB), Birmingham, AL 35233, USA; (S.T.); (A.T.C.); (P.U.)
| | - Prachi Umbarkar
- Division of Cardiovascular Diseases, The University of Alabama at Birmingham (UAB), Birmingham, AL 35233, USA; (S.T.); (A.T.C.); (P.U.)
| | - Hind Lal
- Division of Cardiovascular Diseases, The University of Alabama at Birmingham (UAB), Birmingham, AL 35233, USA; (S.T.); (A.T.C.); (P.U.)
- Correspondence: (M.G.); (H.L.)
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13
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Asahara SI, Inoue H, Kido Y. Regulation of Pancreatic β-Cell Mass by Gene-Environment Interaction. Diabetes Metab J 2022; 46:38-48. [PMID: 35135077 PMCID: PMC8831821 DOI: 10.4093/dmj.2021.0045] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Accepted: 05/28/2021] [Indexed: 11/15/2022] Open
Abstract
The main pathogenic mechanism of diabetes consists of an increase in insulin resistance and a decrease in insulin secretion from pancreatic β-cells. The number of diabetic patients has been increasing dramatically worldwide, especially in Asian people whose capacity for insulin secretion is inherently lower than that of other ethnic populations. Causally, changes of environmental factors in addition to intrinsic genetic factors have been considered to have an influence on the increased prevalence of diabetes. Particular focus has been placed on "gene-environment interactions" in the development of a reduced pancreatic β-cell mass, as well as type 1 and type 2 diabetes mellitus. Changes in the intrauterine environment, such as intrauterine growth restriction, contribute to alterations of gene expression in pancreatic β-cells, ultimately resulting in the development of pancreatic β-cell failure and diabetes. As a molecular mechanism underlying the effect of the intrauterine environment, epigenetic modifications have been widely investigated. The association of diabetes susceptibility genes or dietary habits with gene-environment interactions has been reported. In this review, we provide an overview of the role of gene-environment interactions in pancreatic β-cell failure as revealed by previous reports and data from experiments.
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Affiliation(s)
- Shun-ichiro Asahara
- Division of Diabetes and Endocrinology, Department of Internal Medicine, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Hiroyuki Inoue
- Division of Medical Chemistry, Department of Metabolism and Diseases, Kobe University Graduate School of Health Sciences, Kobe, Japan
| | - Yoshiaki Kido
- Division of Diabetes and Endocrinology, Department of Internal Medicine, Kobe University Graduate School of Medicine, Kobe, Japan
- Division of Medical Chemistry, Department of Metabolism and Diseases, Kobe University Graduate School of Health Sciences, Kobe, Japan
- Corresponding author: Yoshiaki Kido https://orcid.org/0000-0003-2433-5799 Department of Metabolism and Diseases, Kobe University Graduate School of Health Sciences, 7-10-2 Tomogaoka, Suma-ku, Kobe 654-0142, Japan E-mail:
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14
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Adipose Tissue Dysfunctions in Response to an Obesogenic Diet Are Reduced in Mice after Transgenerational Supplementation with Omega 3 Fatty Acids. Metabolites 2021; 11:metabo11120838. [PMID: 34940596 PMCID: PMC8706165 DOI: 10.3390/metabo11120838] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Revised: 11/25/2021] [Accepted: 11/30/2021] [Indexed: 11/23/2022] Open
Abstract
Obesity is characterized by profound alterations in adipose tissue (AT) biology, leading to whole body metabolic disturbances such as insulin resistance and cardiovascular diseases. These alterations are related to the development of a local inflammation, fibrosis, hypertrophy of adipocytes, and dysregulation in energy homeostasis, notably in visceral adipose tissue (VAT). Omega 3 (n-3) fatty acids (FA) have been described to possess beneficial effects against obesity-related disorders, including in the AT; however, the long-term effect across generations remains unknown. The current study was conducted to identify if supplementation with n-3 polyunsaturated FA (PUFA) for three generations could protect from the consequences of an obesogenic diet in VAT. Young mice from the third generation of a lineage receiving a daily supplementation (1% of the diet) with fish oil rich in eicosapentaenoic acid (EPA) or an isocaloric amount of sunflower oil, were fed a high-fat, high-sugar content diet for 4 months. We explore the transcriptomic adaptations in each lineage using DNA microarray in VAT and bioinformatic exploration of biological regulations using online databases. Transgenerational intake of EPA led to a reduced activation of inflammatory processes, perturbation in metabolic homeostasis, cholesterol metabolism, and mitochondrial functions in response to the obesogenic diet as compared to control mice from a control lineage. This suggests that the continuous intake of long chain n-3 PUFA could be preventive in situations of oversupply of energy-dense, nutrient-poor foods.
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15
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He Z, You G, Liu Q, Li N. Alzheimer's Disease and Diabetes Mellitus in Comparison: The Therapeutic Efficacy of the Vanadium Compound. Int J Mol Sci 2021; 22:ijms222111931. [PMID: 34769364 PMCID: PMC8584792 DOI: 10.3390/ijms222111931] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 10/22/2021] [Accepted: 10/28/2021] [Indexed: 02/07/2023] Open
Abstract
Alzheimer’s disease (AD) is an intractable neurodegenerative disease that leads to dementia, primarily in elderly people. The neurotoxicity of amyloid-beta (Aβ) and tau protein has been demonstrated over the last two decades. In line with these findings, several etiological hypotheses of AD have been proposed, including the amyloid cascade hypothesis, the oxidative stress hypothesis, the inflammatory hypothesis, the cholinergic hypothesis, et al. In the meantime, great efforts had been made in developing effective drugs for AD. However, the clinical efficacy of the drugs that were approved by the US Food and Drug Association (FDA) to date were determined only mild/moderate. We recently adopted a vanadium compound bis(ethylmaltolato)-oxidovanadium (IV) (BEOV), which was originally used for curing diabetes mellitus (DM), to treat AD in a mouse model. It was shown that BEOV effectively reduced the Aβ level, ameliorated the inflammation in brains of the AD mice, and improved the spatial learning and memory activities of the AD mice. These finding encouraged us to further examine the mechanisms underlying the therapeutic effects of BEOV in AD. In this review, we summarized the achievement of vanadium compounds in medical studies and investigated the prospect of BEOV in AD and DM treatment.
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Affiliation(s)
- Zhijun He
- College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518055, China; (Z.H.); (G.Y.); (Q.L.)
| | - Guanying You
- College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518055, China; (Z.H.); (G.Y.); (Q.L.)
| | - Qiong Liu
- College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518055, China; (Z.H.); (G.Y.); (Q.L.)
- Shenzhen-Hong Kong Institute of Brain Science-Shenzhen Fundamental Research Institutions, Shenzhen 518055, China
| | - Nan Li
- College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518055, China; (Z.H.); (G.Y.); (Q.L.)
- Shenzhen Bay Laboratory, Shenzhen 518055, China
- Correspondence: ; Tel.: +86-(0)755-2653-5432; Fax: +86-(0)755-8671-3951
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16
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Wang L, Li J, Di LJ. Glycogen synthesis and beyond, a comprehensive review of GSK3 as a key regulator of metabolic pathways and a therapeutic target for treating metabolic diseases. Med Res Rev 2021; 42:946-982. [PMID: 34729791 PMCID: PMC9298385 DOI: 10.1002/med.21867] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 08/01/2021] [Accepted: 10/24/2021] [Indexed: 12/19/2022]
Abstract
Glycogen synthase kinase‐3 (GSK3) is a highly evolutionarily conserved serine/threonine protein kinase first identified as an enzyme that regulates glycogen synthase (GS) in response to insulin stimulation, which involves GSK3 regulation of glucose metabolism and energy homeostasis. Both isoforms of GSK3, GSK3α, and GSK3β, have been implicated in many biological and pathophysiological processes. The various functions of GSK3 are indicated by its widespread distribution in multiple cell types and tissues. The studies of GSK3 activity using animal models and the observed effects of GSK3‐specific inhibitors provide more insights into the roles of GSK3 in regulating energy metabolism and homeostasis. The cross‐talk between GSK3 and some important energy regulators and sensors and the regulation of GSK3 in mitochondrial activity and component function further highlight the molecular mechanisms in which GSK3 is involved to regulate the metabolic activity, beyond its classical regulatory effect on GS. In this review, we summarize the specific roles of GSK3 in energy metabolism regulation in tissues that are tightly associated with energy metabolism and the functions of GSK3 in the development of metabolic disorders. We also address the impacts of GSK3 on the regulation of mitochondrial function, activity and associated metabolic regulation. The application of GSK3 inhibitors in clinical tests will be highlighted too. Interactions between GSK3 and important energy regulators and GSK3‐mediated responses to different stresses that are related to metabolism are described to provide a brief overview of previously less‐appreciated biological functions of GSK3 in energy metabolism and associated diseases through its regulation of GS and other functions.
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Affiliation(s)
- Li Wang
- Proteomics, Metabolomics, and Drug Development Core, Faculty of Health Sciences, University of Macau, Macau, China.,Department of Biomedical Sciences, Faculty of Health Sciences, Macau, China.,Cancer Center of the Faculty of Health Sciences, University of Macau, Macau, China.,Institute of Translational Medicine, University of Macau, Macau, China.,Ministry of Education, Frontiers Science Center for Precision Oncology, University of Macau, Macau, China
| | - Jiajia Li
- Department of Biomedical Sciences, Faculty of Health Sciences, Macau, China.,Cancer Center of the Faculty of Health Sciences, University of Macau, Macau, China.,Institute of Translational Medicine, University of Macau, Macau, China.,Ministry of Education, Frontiers Science Center for Precision Oncology, University of Macau, Macau, China
| | - Li-Jun Di
- Department of Biomedical Sciences, Faculty of Health Sciences, Macau, China.,Cancer Center of the Faculty of Health Sciences, University of Macau, Macau, China.,Institute of Translational Medicine, University of Macau, Macau, China.,Ministry of Education, Frontiers Science Center for Precision Oncology, University of Macau, Macau, China
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17
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Ullah A, Ali N, Ahmad S, Rahman SU, Alghamdi S, Bannunah AM, Ali R, Aman A, Khan J, Hussain H, Sahibzada MUK. Glycogen synthase kinase-3 (GSK-3) a magic enzyme: it's role in diabetes mellitus and glucose homeostasis, interactions with fluroquionlones. A mini-review. BRAZ J BIOL 2021; 83:e250179. [PMID: 34524376 DOI: 10.1590/1519-6984.250179] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Accepted: 05/01/2021] [Indexed: 01/08/2023] Open
Abstract
Diabetes mellitus (DM) is a non-communicable disease throughout the world in which there is persistently high blood glucose level from the normal range. The diabetes and insulin resistance are mainly responsible for the morbidities and mortalities of humans in the world. This disease is mainly regulated by various enzymes and hormones among which Glycogen synthase kinase-3 (GSK-3) is a principle enzyme and insulin is the key hormone regulating it. The GSK-3, that is the key enzyme is normally showing its actions by various mechanisms that include its phosphorylation, formation of protein complexes, and other cellular distribution and thus it control and directly affects cellular morphology, its growth, mobility and apoptosis of the cell. Disturbances in the action of GSK-3 enzyme may leads to various disease conditions that include insulin resistance leading to diabetes, neurological disease like Alzheimer's disease and cancer. Fluoroquinolones are the most common class of drugs that shows dysglycemic effects via interacting with GSK-3 enzyme. Therefore, it is the need of the day to properly understand functions and mechanisms of GSK-3, especially its role in glucose homeostasis via effects on glycogen synthase.
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Affiliation(s)
- A Ullah
- Department of Pharmacy, Shaheed Benazir Bhutto University, Sheringal, Dir Upper, Khyber Pakhtunkhwa, Pakistan.,Institute of Basic Medical Sciences, Khyber Medical University, Peshawar, Khyber Pakhtunkhwa, Pakistan
| | - N Ali
- Institute of Basic Medical Sciences, Khyber Medical University, Peshawar, Khyber Pakhtunkhwa, Pakistan
| | - S Ahmad
- Department of Pharmacy, Shaheed Benazir Bhutto University, Sheringal, Dir Upper, Khyber Pakhtunkhwa, Pakistan
| | - S U Rahman
- Department of Pharmacy, Shaheed Benazir Bhutto University, Sheringal, Dir Upper, Khyber Pakhtunkhwa, Pakistan
| | - S Alghamdi
- Laboratory Medicine Department, Faculty of Applied Medical Sciences, Umm Al-Qura University, Makkah, Saudi Arabia
| | - A M Bannunah
- Department of Basic Sciences, Common First year Deanship, Umm Al-Qura University, Makkah, Saudi Arabia
| | - R Ali
- Institute of Basic Medical Sciences, Khyber Medical University, Peshawar, Khyber Pakhtunkhwa, Pakistan
| | - A Aman
- Department of Pharmacy, Shaheed Benazir Bhutto University, Sheringal, Dir Upper, Khyber Pakhtunkhwa, Pakistan
| | - J Khan
- Department of Pharmacy, University of Malakand, Chakdara Dir Lower, Khyber Pakhtunkhwa, Pakistan
| | - H Hussain
- Department of Pharmacy, Shaheed Benazir Bhutto University, Sheringal, Dir Upper, Khyber Pakhtunkhwa, Pakistan
| | - M U K Sahibzada
- Department of Pharmacy, Sarhad University of Science and Information Technology, Peshawar, Khyber Pakhtunkhwa, Pakistan
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18
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Bonnet C, Brahmbhatt A, Deng SX, Zheng JJ. Wnt signaling activation: targets and therapeutic opportunities for stem cell therapy and regenerative medicine. RSC Chem Biol 2021; 2:1144-1157. [PMID: 34458828 PMCID: PMC8341040 DOI: 10.1039/d1cb00063b] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Accepted: 06/01/2021] [Indexed: 12/18/2022] Open
Abstract
Wnt proteins are secreted morphogens that play critical roles in embryonic development, stem cell proliferation, self-renewal, tissue regeneration and remodeling in adults. While aberrant Wnt signaling contributes to diseases such as cancer, activation of Wnt/β-catenin signaling is a target of interest in stem cell therapy and regenerative medicine. Recent high throughput screenings from chemical and biological libraries, combined with improved gene expression reporter assays of Wnt/β-catenin activation together with rational drug design, led to the development of a myriad of Wnt activators, with different mechanisms of actions. Among them, Wnt mimics, antibodies targeting Wnt inhibitors, glycogen-synthase-3β inhibitors, and indirubins and other natural product derivatives are emerging modalities to treat bone, neurodegenerative, eye, and metabolic disorders, as well as prevent ageing. Nevertheless, the creation of Wnt-based therapies has been hampered by challenges in developing potent and selective Wnt activators without off-target effects, such as oncogenesis. On the other hand, to avoid these risks, their use to promote ex vivo expansion during tissue engineering is a promising application.
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Affiliation(s)
- Clémence Bonnet
- Stein Eye Institute, University of California Los Angeles CA USA +1-3107947906 +1-3102062173
- INSERM, UMRS1138, Team 17, From Physiopathology of Ocular Diseases to Clinical Development, Paris University, Centre de Recherche des Cordeliers, and Cornea Departement, Cochin Hospital, AP-HP F-75014 Paris France
| | - Anvi Brahmbhatt
- Stein Eye Institute, University of California Los Angeles CA USA +1-3107947906 +1-3102062173
| | - Sophie X Deng
- Stein Eye Institute, University of California Los Angeles CA USA +1-3107947906 +1-3102062173
- Molecular Biology Institute, University of California Los Angeles CA USA
| | - Jie J Zheng
- Stein Eye Institute, University of California Los Angeles CA USA +1-3107947906 +1-3102062173
- Molecular Biology Institute, University of California Los Angeles CA USA
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Kalezic A, Udicki M, Srdic Galic B, Aleksic M, Korac A, Jankovic A, Korac B. Tissue-Specific Warburg Effect in Breast Cancer and Cancer-Associated Adipose Tissue-Relationship between AMPK and Glycolysis. Cancers (Basel) 2021; 13:cancers13112731. [PMID: 34073074 PMCID: PMC8198826 DOI: 10.3390/cancers13112731] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Revised: 05/21/2021] [Accepted: 05/26/2021] [Indexed: 02/07/2023] Open
Abstract
Simple Summary Specific metabolic phenotypes of breast cancer result from local interactions such as cancer-adipocyte cross-talk and systemic metabolic influences such as obesity. Here we examined key regulatory enzymes involved in glucose metabolism in breast cancer tissue and cancer-associated adipose tissue of normal-weight and overweight/obese premenopausal women in comparison to benign breast tumor tissue and adipose tissue of weight-matched women. We show a simultaneous increase in 5′-AMP-activated protein kinase (AMPK) protein expression with glucose utilization favoring glycolysis and pentose phosphate pathway in breast cancer tissue. In parallel, we show an increased AMPK protein expression with glucose utilization favoring the pentose phosphate pathway in cancer-associated adipose tissue. Moreover, specific features of cancer tissue glycolysis and glycogen metabolism differ between normal-weight and overweight/obese women. The results suggest context-dependent induction of tissue-specific Warburg effect in breast cancer and cancer-associated adipose tissue. Abstract Typical features of the breast malignant phenotype rely on metabolic reprogramming of cancer cells and their interaction with surrounding adipocytes. Obesity is strongly associated with breast cancer mortality, yet the effects of obesity on metabolic reprogramming of cancer and cancer-associated adipose tissue remain largely unknown. Paired biopsies of breast tumor tissue and adipose tissue from premenopausal women were divided according to pathohistological analyses and body mass index on normal-weight and overweight/obese with benign or malignant tumors. We investigated the protein expression of key regulatory enzymes of glycolysis, pentose phosphate pathway (PPP), and glycogen synthesis. Breast cancer tissue showed a simultaneous increase in 5′-AMP-activated protein kinase (AMPK) protein expression with typical features of the Warburg effect, including hexokinase 2 (HK 2) overexpression and its association with mitochondrial voltage-dependent anion-selective channel protein 1, associated with an overexpression of rate-limiting enzymes of glycolysis (phosphofructokinase 1—PFK-1) and pentose phosphate pathway (glucose-6-phosphate dehydrogenase—G6PDH). In parallel, cancer-associated adipose tissue showed increased AMPK protein expression with overexpression of HK 2 and G6PDH in line with increased PPP activity. Moreover, important obesity-associated differences in glucose metabolism were observed in breast cancer tissue showing prominent glycogen deposition and higher glycogen synthase kinase-3 protein expression in normal-weight women and higher PFK-1 and glyceraldehyde 3-phosphate dehydrogenase (GAPDH) protein expression in overweight/obese women. In conclusion, metabolic reprogramming of glycolysis contributes to tissue-specific Warburg effect in breast cancer and cancer-associated adipose tissue.
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Affiliation(s)
- Andjelika Kalezic
- Department of Physiology, Institute for Biological Research “Sinisa Stankovic”—National Institute of Republic of Serbia, University of Belgrade, 11000 Belgrade, Serbia; (A.K.); (A.J.)
| | - Mirjana Udicki
- Department of Anatomy, Faculty of Medicine, University of Novi Sad, 21000 Novi Sad, Serbia; (M.U.); (B.S.G.)
| | - Biljana Srdic Galic
- Department of Anatomy, Faculty of Medicine, University of Novi Sad, 21000 Novi Sad, Serbia; (M.U.); (B.S.G.)
| | - Marija Aleksic
- Center for Electron Microscopy, Faculty of Biology, University of Belgrade, 11000 Belgrade, Serbia; (M.A.); (A.K.)
| | - Aleksandra Korac
- Center for Electron Microscopy, Faculty of Biology, University of Belgrade, 11000 Belgrade, Serbia; (M.A.); (A.K.)
| | - Aleksandra Jankovic
- Department of Physiology, Institute for Biological Research “Sinisa Stankovic”—National Institute of Republic of Serbia, University of Belgrade, 11000 Belgrade, Serbia; (A.K.); (A.J.)
| | - Bato Korac
- Department of Physiology, Institute for Biological Research “Sinisa Stankovic”—National Institute of Republic of Serbia, University of Belgrade, 11000 Belgrade, Serbia; (A.K.); (A.J.)
- Center for Electron Microscopy, Faculty of Biology, University of Belgrade, 11000 Belgrade, Serbia; (M.A.); (A.K.)
- Correspondence: ; Tel.: +3-811-1207-8307
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Lithium Chloride Protects against Sepsis-Induced Skeletal Muscle Atrophy and Cancer Cachexia. Cells 2021; 10:cells10051017. [PMID: 33925786 PMCID: PMC8146089 DOI: 10.3390/cells10051017] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Revised: 04/22/2021] [Accepted: 04/23/2021] [Indexed: 12/19/2022] Open
Abstract
Inflammation-mediated skeletal muscle wasting occurs in patients with sepsis and cancer cachexia. Both conditions severely affect patient morbidity and mortality. Lithium chloride has previously been shown to enhance myogenesis and prevent certain forms of muscular dystrophy. However, to our knowledge, the effect of lithium chloride treatment on sepsis-induced muscle atrophy and cancer cachexia has not yet been investigated. In this study, we aimed to examine the effects of lithium chloride using in vitro and in vivo models of cancer cachexia and sepsis. Lithium chloride prevented wasting in myotubes cultured with cancer cell-conditioned media, maintained the expression of the muscle fiber contractile protein, myosin heavy chain 2, and inhibited the upregulation of the E3 ubiquitin ligase, Atrogin-1. In addition, it inhibited the upregulation of inflammation-associated cytokines in macrophages treated with lipopolysaccharide. In the animal model of sepsis, lithium chloride treatment improved body weight, increased muscle mass, preserved the survival of larger fibers, and decreased the expression of muscle-wasting effector genes. In a model of cancer cachexia, lithium chloride increased muscle mass, enhanced muscle strength, and increased fiber cross-sectional area, with no significant effect on tumor mass. These results indicate that lithium chloride exerts therapeutic effects on inflammation-mediated skeletal muscle wasting, such as sepsis-induced muscle atrophy and cancer cachexia.
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Wang M, Liu T, Chen S, Wu M, Han J, Li Z. Design and synthesis of 3-(4-pyridyl)-5-(4-sulfamido-phenyl)-1,2,4-oxadiazole derivatives as novel GSK-3β inhibitors and evaluation of their potential as multifunctional anti-Alzheimer agents. Eur J Med Chem 2021; 209:112874. [PMID: 33017743 DOI: 10.1016/j.ejmech.2020.112874] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Revised: 09/21/2020] [Accepted: 09/22/2020] [Indexed: 01/01/2023]
Abstract
Pleiotropic intervention has prominent advantages for complex pathomechanisms, such as Alzheimer's disease (AD). In this study, a series of novel 3-(4-pyridyl)-5-(4- sulfamido-phenyl)-1,2,4-oxadiazole derivatives were designed and synthesized following the multitarget-directed ligand-based strategy. All compounds were evaluated for glycogen synthase kinase 3β (GSK-3β) inhibition and antineuroinflammatory and neuroprotective activities. Given that abnormal glucose metabolism plays an important role in AD occurrence and development, the effects of all compounds on glucose consumption in HepG2 cells was evaluated. Compounds 5e and 10b showed good dual potency in GSK-3β inhibition (IC50: 5e = 1.52 μM, 10b = 0.19 μM) and antineuroinflammatory potency (IC50: 5e = 0.47 ± 0.64 μM, 10b = 6.94 ± 2.33 μM). The effect of compound 10b on glucose consumption was higher than that of positive drug metformin. These compounds exerted a certain neuroprotective effect. Compound 10b dramatically reduced Aβ-induced Tau hyperphosphorylation, thus inhibiting GSK-3β at the cellular level. Notably, compounds 5e and 10b exhibited good inhibitory effects on the formation of intracellular reactive oxygen species (ROS). Moreover, these compounds displayed proper blood-brain barrier permeability and lacked neurotoxicity up to 50 μM concentration. Finally, in vivo experiments revealed that compound 10b improved cognitive impairment in scopolamine-induced mouse models. Results indicated that compound 10b deserves further study as a multifunctional lead compound.
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Affiliation(s)
- Min Wang
- The Key Laboratory of Major Autoimmune Diseases, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University; The Key Llaboratory of Anti-inflammatory and Immune Medicines, Ministry of Education, Hefei, 230032, China
| | - Tongtong Liu
- The Key Laboratory of Major Autoimmune Diseases, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University; The Key Llaboratory of Anti-inflammatory and Immune Medicines, Ministry of Education, Hefei, 230032, China
| | - Shiming Chen
- The Key Laboratory of Major Autoimmune Diseases, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University; The Key Llaboratory of Anti-inflammatory and Immune Medicines, Ministry of Education, Hefei, 230032, China
| | - Mingfei Wu
- The Key Laboratory of Major Autoimmune Diseases, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University; The Key Llaboratory of Anti-inflammatory and Immune Medicines, Ministry of Education, Hefei, 230032, China
| | - Jianfei Han
- The Key Laboratory of Major Autoimmune Diseases, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University; The Key Llaboratory of Anti-inflammatory and Immune Medicines, Ministry of Education, Hefei, 230032, China
| | - Zeng Li
- The Key Laboratory of Major Autoimmune Diseases, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University; The Key Llaboratory of Anti-inflammatory and Immune Medicines, Ministry of Education, Hefei, 230032, China.
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Sampath C, Srinivasan S, Freeman ML, Gangula PR. Inhibition of GSK-3β restores delayed gastric emptying in obesity-induced diabetic female mice. Am J Physiol Gastrointest Liver Physiol 2020; 319:G481-G493. [PMID: 32812777 PMCID: PMC7654647 DOI: 10.1152/ajpgi.00227.2020] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Diabetic gastroparesis (DG) is a clinical syndrome characterized by delayed gastric emptying (DGE). Loss of nuclear factor erythroid 2-related factor 2 (Nrf2) is associated with reduced neuronal nitric oxide synthase-α (nNOSα)-mediated gastric motility and DGE. Previous studies have shown that nuclear exclusion and inactivation of Nrf2 is partly regulated by glycogen synthase kinase 3β (GSK-3β). In the current study, the molecular signaling of GSK-3β-mediated Nrf2 activation and its mechanistic role on DG were investigated in high-fat diet (HFD)-induced obese/Type 2 diabetes (T2D) female mice. Adult female C57BL/6J mice were fed with HFD or normal diet (ND) with or without GSK-3β inhibitor (SB 216763, 10 mg/kg body wt ip) start from the 14th wk and continued feeding mice for an additional 3-wk time period. Our results show that treatment with GSK-3β inhibitor SB attenuated DGE in obese/T2D mice. Treatment with SB restored impaired gastric 1) Nrf2 and phase II antioxidant enzymes through PI3K/ERK/AKT-mediated pathway, 2) tetrahydrobiopterin (BH4, cofactor of nNOS) biosynthesis enzyme dihydrofolate reductase, and 3) nNOSα dimerization in obese/T2 diabetic female mice. SB treatment normalized caspase 3 activity and downstream GSK-3β signaling in the gastric tissues of the obese/T2 diabetic female mice. In addition, GSK-3β inhibitor restored impaired nitrergic relaxation in hyperglycemic conditions. Finally, SB treatment reduced GSK3 marker, pTau in adult primary enteric neuronal cells. These findings emphasize the importance of GSK-3β on regulating gastric Nrf2 and nitrergic mediated gastric emptying in obese/diabetic rodents.NEW & NOTEWORTHY Inhibition of glycogen synthase kinase 3β (GSK-3β) with SB 216763 attenuates delayed gastric emptying through gastric nuclear factor erythroid 2-related factor 2 (Nrf2)-phase II enzymes in high-fat diet-fed female mice. SB 216763 restored impaired gastric PI3K/AKT/ β-catenin/caspase 3 expression. Inhibition of GSK-3β normalized gastric dihydrofolate reductase, neuronal nitric oxide synthase-α expression, dimerization and nitrergic relaxation. SB 216763 normalized both serum estrogen and nitrate levels in female obese/Type 2 diabetes mice. SB 216763 reduced downstream signaling of GSK-3β in enteric neuronal cells in vitro.
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Affiliation(s)
- Chethan Sampath
- 1Department of Oral Diagnostic Sciences and Research, School of Dentistry, Meharry Medical College, Nashville, Tennessee
| | - Shanthi Srinivasan
- 2Division of Digestive Diseases, Department of Medicine, Emory University, Atlanta, Georgia and Atlanta Veterans Affairs Health Care System, Decatur, Atlanta, Georgia
| | - Michael L. Freeman
- 3Department of Radiation Oncology, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Pandu R. Gangula
- 1Department of Oral Diagnostic Sciences and Research, School of Dentistry, Meharry Medical College, Nashville, Tennessee
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Hölscher C. Evidence for pathophysiological commonalities between metabolic and neurodegenerative diseases. INTERNATIONAL REVIEW OF NEUROBIOLOGY 2020; 155:65-89. [PMID: 32854859 DOI: 10.1016/bs.irn.2020.01.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Diabetes mellitus is a risk factor for developing neurodegenerative diseases, such as Alzheimer's and Parkinson's diseases. This relationship seems counter-intuitive as these pathological syndromes appear to be very different. However, they share underlying mechanisms such as desensitization of insulin signaling. Insulin not only regulates blood glucose levels, but also acts as a growth factor that is important for neuronal activity and repair. Insulin signaling desensitization has been found in the brains of people with progressive neurodegenerative diseases, which is most likely driven by chronic inflammation. Based on this, insulin has been tested in patients with Alzheimer's disease, and it was found that memory formation was improved and brain pathology reduced. Glucagon-like peptide-1 (GLP-1) is an incretin hormone, and numerous drugs that mimic this peptide are on the market to treat type 2 diabetes mellitus. Preclinical studies have provided robust evidence that some of these drugs, such as liraglutide or lixisenatide can enter the brain and improve key pathological parameters, such as memory loss, impairment of motor activity, synapse loss, reduced energy utilization by neurons and chronic inflammation in the brain. First clinical trials with a GLP-1 mimetic show good effects in patients with Parkinson's disease, improving motor control and insulin signaling in the brain. This is a proof of concept that this approach is viable and that drug treatment affects the main drivers of the disease and does not just modify the symptoms. It demonstrates that this new research area is a promising and fertile space for the development of novel treatments for neurodegenerative diseases.
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Affiliation(s)
- Christian Hölscher
- Neurology Department of the Second Associated Hospital of Shanxi Medical University, Taiyuan, Shanxi, PR China; Research and Experimental Center, Henan University of Chinese Medicine, Zhengzhou, Henan, PR China.
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Antidiabetic Effects of Arginyl-Fructosyl-Glucose, a Nonsaponin Fraction from Ginseng Processing in Streptozotocin-Induced Type 2 Diabetic Mice through Regulating the PI3K/AKT/GSK-3 β and Bcl-2/Bax Signaling Pathways. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2020; 2020:3707904. [PMID: 32714403 PMCID: PMC7352147 DOI: 10.1155/2020/3707904] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Accepted: 04/06/2020] [Indexed: 01/21/2023]
Abstract
Streptozotocin- (STZ-) induced type 2 diabetes mellitus (T2DM) caused insulin secretion disorder and hyperglycemia, further causing tissue and organ damage. In recent years, studies on ginseng (Panax ginseng C. A. Meyer) and its saponins (Ginsenosides) have proved to possess antidiabetic pharmacological activities, but the mechanism of nonsaponins on STZ-induced T2DM is still unclear. Arginyl-fructosyl-glucose (AFG) is a representative nonsaponin component produced in the processing of red ginseng. The present study was designed to assess the possible healing consequence of AFG on STZ-induced T2DM in mice and also to explore its fundamental molecular contrivances. T2DM-related indexes, fasting blood glucose levels, and body weight, histological changes, biochemical considerations, biomarkers, the mRNA countenance intensities of inflammatory facts, and variations in correlated protein manifestation in adipose tissue and liver tissue were calculated. Consequences specified that AFG usage successfully amends STZ-induced insulin conflict and liver grievance in T2DM. Systematically, AFG action diminished STZ-induced oxidative stress and inflammatory responses in the liver. In addition, we demonstrated that AFG also attenuates apoptosis and insulin secretion disorders in T2DM by adjusting the PI3K/AKT/GSK3β signaling pathway. At the end, these discoveries recommend that AFG averts the development of T2DM through numerous types of machinery and proposes that AFG can also be used in order to treat T2DM in the future.
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Gupta S, Singhal NK, Ganesh S, Sandhir R. Extending Arms of Insulin Resistance from Diabetes to Alzheimer's Disease: Identification of Potential Therapeutic Targets. CNS & NEUROLOGICAL DISORDERS-DRUG TARGETS 2020; 18:172-184. [PMID: 30430949 DOI: 10.2174/1871527317666181114163515] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Revised: 10/08/2018] [Accepted: 11/08/2018] [Indexed: 12/14/2022]
Abstract
BACKGROUND & OBJECTIVE Type 3 diabetes (T3D) is chronic insulin resistant state of brain which shares pathology with sporadic Alzheimer's disease (sAD). Insulin signaling is a highly conserved pathway in the living systems that orchestrate cell growth, repair, maintenance, energy homeostasis and reproduction. Although insulin is primarily studied as a key molecule in diabetes mellitus, its role has recently been implicated in the development of Alzheimer's disease (AD). Severe complications in brain of diabetic patients and metabolically compromised status is evident in brain of AD patients. Underlying shared pathology of two disorders draws a trajectory from peripheral insulin resistance to insulin unresponsiveness in the central nervous system (CNS). As insulin has a pivotal role in AD, it is not an overreach to address diabetic condition in AD brain as T3D. Insulin signaling is indispensable to nervous system and it is vital for neuronal growth, repair, and maintenance of chemical milieu at synapses. Downstream mediators of insulin signaling pathway work as a regulatory hub for aggregation and clearance of unfolded proteins like Aβ and tau. CONCLUSION In this review, we discuss the regulatory roles of insulin as a pivotal molecule in brain with the understanding of defective insulin signaling as a key pathological mechanism in sAD. This article also highlights ongoing trials of targeting insulin signaling as a therapeutic manifestation to treat diabetic condition in brain.
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Affiliation(s)
- Smriti Gupta
- Department of Biochemistry, Basic Medical Science Block II, Sector 25, Panjab University, Chandigarh 160014, India
| | - Nitin Kumar Singhal
- National Agri-Food Biotechnology Institute, Sector 81, S.A.S. Nagar, Mohali, Punjab 140306, India
| | - Subramaniam Ganesh
- Department of Biological Sciences and Bioengineering, Indian Institute of Technology, Kanpur 208016, India
| | - Rajat Sandhir
- Department of Biochemistry, Basic Medical Science Block II, Sector 25, Panjab University, Chandigarh 160014, India
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Elrashidy RA. Dysregulation of nuclear factor erythroid 2-related factor 2 signaling and activation of fibrogenic pathways in hearts of high fat diet-fed rats. Mol Biol Rep 2020; 47:2821-2834. [DOI: 10.1007/s11033-020-05360-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2019] [Accepted: 02/27/2020] [Indexed: 02/07/2023]
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Chang YH, Tsai JN, Chang SW, Hsu WT, Yang CP, Hsiao CW, Shiau MY. Regulation of Adipogenesis and Lipid Deposits by Collapsin Response Mediator Protein 2. Int J Mol Sci 2020; 21:ijms21062172. [PMID: 32245267 PMCID: PMC7139951 DOI: 10.3390/ijms21062172] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 03/17/2020] [Accepted: 03/19/2020] [Indexed: 12/17/2022] Open
Abstract
As emerging evidence suggesting neurodegenerative diseases and metabolic diseases have common pathogenesis, we hypothesized that the neurite outgrowth-controlling collapsin response mediator protein 2 (CRMP2) was involved in energy homeostasis. Therefore, putative roles of CRMP2 in adipocyte differentiation (adipogenesis) and lipid metabolism were explored and addressed in this study. CRMP2 expression profiles were in vitro and in vivo characterized during adipogenic process of 3T3-L1 pre-adipocytes and diet-induced obese (DIO) mice, respectively. Effects of CRMP2 on lipid metabolism and deposits were also analyzed. Our data revealed that CRMP2 expression pattern was coupled with adipogenic stages. CRMP2 overexpression inhibited cell proliferation at MCE phase, and significantly reduced lipid contents by down-regulating adipogenesis-driving transcription factors and lipid-synthesizing enzymes. Interestingly, GLUT4 translocation and the lipid droplets fusion were disturbed in CRMP2-silencing cells by affecting actin polymerization. Moreover, adipose CRMP2 was significantly increased in DIO mice, indicating CRMP2 is associated with obesity. Accordingly, CRMP2 exerts multiple functions in adipogenesis and lipid deposits through mediating cell proliferation, glucose/lipid metabolism and cytoskeleton dynamics. The present study identifies novel roles of CRMP2 in mediating adipogenesis and possible implication in metabolic disorders, as well as provides molecular evidence supporting the link of pathogenesis between neurodegenerative diseases and metabolic abnormalities.
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Affiliation(s)
- Yih-Hsin Chang
- Department of Biotechnology and Laboratory Science in Medicine, National Yang-Ming University, Taipei 112, Taiwan; (Y.-H.C.); (S.-W.C.); (W.-T.H.); (C.-P.Y.); (C.-W.H.)
| | - Jen-Ning Tsai
- Department of Medical Laboratory and Biotechnology, Chung Shan Medical University, Taichung 402, Taiwan;
- Clinical Laboratory, Chung Shan Medical University Hospital, Taichung 402, Taiwan
| | - Shu-Wen Chang
- Department of Biotechnology and Laboratory Science in Medicine, National Yang-Ming University, Taipei 112, Taiwan; (Y.-H.C.); (S.-W.C.); (W.-T.H.); (C.-P.Y.); (C.-W.H.)
| | - Wei-Ting Hsu
- Department of Biotechnology and Laboratory Science in Medicine, National Yang-Ming University, Taipei 112, Taiwan; (Y.-H.C.); (S.-W.C.); (W.-T.H.); (C.-P.Y.); (C.-W.H.)
| | - Ching-Ping Yang
- Department of Biotechnology and Laboratory Science in Medicine, National Yang-Ming University, Taipei 112, Taiwan; (Y.-H.C.); (S.-W.C.); (W.-T.H.); (C.-P.Y.); (C.-W.H.)
| | - Chiao-Wan Hsiao
- Department of Biotechnology and Laboratory Science in Medicine, National Yang-Ming University, Taipei 112, Taiwan; (Y.-H.C.); (S.-W.C.); (W.-T.H.); (C.-P.Y.); (C.-W.H.)
- Program in Molecular Medicine, National Yang-Ming University and Academia Sinica, Taipei 112, Taiwan
| | - Ming-Yuh Shiau
- Department of Nursing, College of Nursing, Hungkuang University, Taichung 433, Taiwan
- Correspondence: or ; Tel.: +886-4-26318652 (ext. 7090); Fax: +886-4-26331198
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Hölscher C. Brain insulin resistance: role in neurodegenerative disease and potential for targeting. Expert Opin Investig Drugs 2020; 29:333-348. [PMID: 32175781 DOI: 10.1080/13543784.2020.1738383] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Introduction: This review evaluates the novel strategy of treating Alzheimer's and Parkinson's disease (AD and PD) withdrugs that initially have been developed to treat type 2 diabetes. As insulin signalling has been found to be de-sensitized in the brains of patients, drugs that can re-sensitize insulin signalling have been tested to evaluate if this strategy can alter disease progression.Areas covered: The review will give an overview of preclinical and clinical tests in AD and PD of drugs activating insulin receptors, glucagon-like peptide -1 (GLP-1) receptors, and glucose-dependent insulinotropic polypeptide (GIP) receptors.Expert opinion: Insulin, GLP-1 and GIP receptor agonists have shown good effects in preclinical studies. First clinical trials in MCI/AD patients have shown that insulin can improve on key pathological symptoms of AD such as memory impairment, brain activity, neuronal energy utilization, and inflammation markers. A GLP-1 receptor agonist has shown disease-modifying effects in PD patients, and first pilot studies have shown encouraging effects of a GLP-1 receptor agonist in AD patients. Novel dual GLP-1/GIP receptor agonists that cross the blood brain barrier show superior neuroprotective effects compared to single GLP-1 or GIP receptor agonists, and show great promise as novel treatments of AD and PD.
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Affiliation(s)
- Christian Hölscher
- Second Hospital, Neurology Department, Shanxi Medical University, Taiyuan, Shanxi, PR China.,Research and Experimental Center, Henan University of Chinese Medicine, Zhengzhou, Henan, PR China
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Pfeiffer S, Sánchez-Lechuga B, Donovan P, Halang L, Prehn JHM, Campos-Caro A, Byrne MM, López-Tinoco C. Circulating miR-330-3p in Late Pregnancy is Associated with Pregnancy Outcomes Among Lean Women with GDM. Sci Rep 2020; 10:908. [PMID: 31969632 PMCID: PMC6976655 DOI: 10.1038/s41598-020-57838-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Accepted: 12/30/2019] [Indexed: 02/07/2023] Open
Abstract
Gestational Diabetes Mellitus (GDM) is characterised by insulin resistance accompanied by reduced beta-cell compensation to increased insulin demand, typically observed in the second and third trimester and associated with adverse pregnancy outcomes. There is a need for a biomarker that can accurately monitor status and predict outcome in GDM, reducing foetal-maternal morbidity and mortality risks. To this end, circulating microRNAs (miRNAs) present themselves as promising candidates, stably expressed in serum and known to play crucial roles in regulation of glucose metabolism. We analysed circulating miRNA profiles in a cohort of GDM patients (n = 31) and nondiabetic controls (n = 29) during the third trimester for miRNA associated with insulin-secretory defects and glucose homeostasis. We identified miR-330-3p as being significantly upregulated in lean women with GDM compared to nondiabetic controls. Furthermore, increased levels of miR-330-3p were associated with better response to treatment (diet vs. insulin), with lower levels associated with exogenous insulin requirement. We observed miR-330-3p to be significantly related to the percentage of caesarean deliveries, with miR-330-3p expression significantly higher in spontaneously delivered GDM patients. We report this strong novel association of circulating miR-330-3p with risk of primary caesarean delivery as a pregnancy outcome linked with poor maternal glycaemic control, strengthening the growing body of evidence for roles of diabetes-associated miRNAs in glucose homeostasis and adaptation to the complex changes related to pregnancy.
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Affiliation(s)
- Shona Pfeiffer
- Centre for Systems Medicine, Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, 123 St. Stephen's Green, Dublin, 2, Ireland
| | - Begoña Sánchez-Lechuga
- Servicio de Endocrinología y Nutrición, Hospital Universitario Puerta del Mar, Cádiz, Spain
| | - Paul Donovan
- Centre for Systems Medicine, Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, 123 St. Stephen's Green, Dublin, 2, Ireland
| | - Luise Halang
- Centre for Systems Medicine, Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, 123 St. Stephen's Green, Dublin, 2, Ireland
| | - Jochen H M Prehn
- Centre for Systems Medicine, Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, 123 St. Stephen's Green, Dublin, 2, Ireland
| | - Antonio Campos-Caro
- Servicio de Endocrinología y Nutrición, Hospital Universitario Puerta del Mar, Cádiz, Spain
| | - Maria M Byrne
- Centre for Systems Medicine, Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, 123 St. Stephen's Green, Dublin, 2, Ireland.,Department of Endocrinology, Mater Misericordiae University Hospital, Eccles Street, Dublin, 7, Ireland
| | - Cristina López-Tinoco
- Servicio de Endocrinología y Nutrición, Hospital Universitario Puerta del Mar, Cádiz, Spain.
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miR-1185-1 and miR-548q Are Biomarkers of Response to Weight Loss and Regulate the Expression of GSK3B. Cells 2019; 8:cells8121548. [PMID: 31801236 PMCID: PMC6953011 DOI: 10.3390/cells8121548] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Revised: 11/26/2019] [Accepted: 11/27/2019] [Indexed: 12/12/2022] Open
Abstract
The aim of the present investigation was to identify putative miRNAs involved in the response to weight loss. Reverse-transcribed RNA isolated from white blood cells (WBCs) of a subpopulation from the Reduction of the Metabolic Syndrome in Navarra-Spain (RESMENA-S) study (low-responders (LR) and high-responders (HR)) was hybridized in a gene expression microarray. Moreover, miRNAs were sequenced by miRNA-Seq. It was found that miR-548q and miR-1185-1 were overexpressed in HR, both in the microarray and in the miRNA-Seq. A bioinformatic prediction of putative target genes of the selected miRNAs found that GSK3B, a putative target for miR-548q and miR-1185-1, was downregulated in HR. Particular 3′-UTR binding regions of GSK3B were cloned downstream of the firefly luciferase gene. HEK-293T cells were co-transfected with either 0.25 μg of empty pmiR-GLO or pmiR-GLO-548q-3′-UTR/pmiR-GLO-1185-1-3′-UTR, and 7.5 pmol of miR-548q/miR-1185-1 mimics, demonstrating that miR-1185-1 bound to the 3′-UTR region of GSK3B. THP-1 cells were transfected with either 20/40 nM of miR-548q/miR-1185-1 mimics, evidencing that miR-1185-1inhibited the expression of the gene when transfected at doses of 20/40 nM, whereas miR-548q inhibited GSK3B expression at a dose of 40 nM. As a conclusion, miR-548q and miR-1185-1 levels in WBCs are biomarkers of response to weight-loss diets and could be involved in the regulation of the proinflammatory gene GSK3B.
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Ahmad F, Woodgett JR. Emerging roles of GSK-3α in pathophysiology: Emphasis on cardio-metabolic disorders. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2019; 1867:118616. [PMID: 31785335 DOI: 10.1016/j.bbamcr.2019.118616] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Revised: 11/18/2019] [Accepted: 11/23/2019] [Indexed: 02/06/2023]
Abstract
Glycogen synthase kinase-3 (GSK-3) is a widely expressed serine/threonine kinase regulates a variety of cellular processes including proliferation, differentiation and death. Mammals harbor two structurally similar isoforms GSK-3α and β that have overlapping as well as unique functions. Of the two, GSK-3β has been studied (and reviewed) in far greater detail with analysis of GSK-3α often as an afterthought. It is now evident that systemic, chronic inhibition of either GSK-3β or both GSK-3α/β is not clinically feasible and if achieved would likely lead to adverse clinical conditions. Emerging evidence suggests important and specific roles for GSK-3α in fatty acid accumulation, insulin resistance, amyloid-β-protein precursor metabolism, atherosclerosis, cardiomyopathy, fibrosis, aging, fertility, and in a variety of cancers. Selective targeting of GSK-3α may present a novel therapeutic opportunity to alleviate a number of pathological conditions. In this review, we assess the evidence for roles of GSK-3α in a variety of pathophysiological settings.
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Affiliation(s)
- Firdos Ahmad
- College of Medicine, University of Sharjah, Sharjah, United Arab Emirates; Sharjah Institute for Medical Research, University of Sharjah, Sharjah, United Arab Emirates.
| | - James R Woodgett
- Lunenfeld-Tanenbaum Research Institute, Sinai Health System, Toronto, ON, Canada; Department of Medical Biophysics, University of Toronto, Canada
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Glycogen synthase kinase 3β hyperactivity in urinary exfoliated cells predicts progression of diabetic kidney disease. Kidney Int 2019; 97:175-192. [PMID: 31791666 DOI: 10.1016/j.kint.2019.08.036] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2019] [Revised: 08/26/2019] [Accepted: 08/29/2019] [Indexed: 12/31/2022]
Abstract
Burgeoning evidence points to glycogen synthase kinase (GSK)3β as a key player in diverse kidney diseases. However, as a pivotal transducer of the insulin signaling pathway, the role of GSK3β in diabetic kidney disease remains uncertain. In db/db mice, renal expression of total and activated GSK3β was increasingly elevated. This preceded the development of diabetic kidney disease, and correlated with the progression of signs of diabetic kidney injury, including albuminuria and extracellular matrix accumulation in glomeruli and tubulointerstitia. In vitro, exposure of glomerular podocytes, mesangial cells, and renal tubular cells to a diabetic milieu induced GSK3β overexpression and hyperactivity, which seem essential and sufficient for eliciting diabetic cellular damages in kidney cells, because the cytopathic effect of the diabetic milieu was mitigated by GSK3β knockdown, but was mimicked by ectopic expression of constitutively active GSK3β even in the normal milieu. In consistency, kidney biopsy specimens procured from patients with varying stages of diabetic nephropathy revealed an amplified expression of total and activated GSK3β in glomeruli and renal tubules, associated with the severity of diabetic nephropathy. Moreover, in retrospective cohorts of type 2 diabetic patients that were followed for over five years, the relative activity of GSK3β in banked urinary exfoliated cells represented an independent risk factor for development or progression of renal impairment. Furthermore, receiver operating characteristic curve analysis demonstrated that GSK3β activity in urinary exfoliated cells provided much better power than albuminuria in discriminating diabetic patients with progressive renal impairment from those with stable kidney function. Thus, renal expression and activity of GSK3β are amplified in experimental and clinical diabetic nephropathy. Hence, GSK3β in urinary exfoliated cells may serve as a novel biomarker for predicting diabetic kidney disease progression.
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Heider F, Pantsar T, Kudolo M, Ansideri F, De Simone A, Pruccoli L, Schneider T, Goettert MI, Tarozzi A, Andrisano V, Laufer SA, Koch P. Pyridinylimidazoles as GSK3β Inhibitors: The Impact of Tautomerism on Compound Activity via Water Networks. ACS Med Chem Lett 2019; 10:1407-1414. [PMID: 31620226 DOI: 10.1021/acsmedchemlett.9b00177] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Accepted: 08/26/2019] [Indexed: 12/11/2022] Open
Abstract
Glycogen synthase kinase-3β (GSK3β) is involved in many pathological conditions and represents an attractive drug target. We previously reported dual GSK3β/p38α mitogen-activated protein kinase inhibitors and identified N-(4-(4-(4-fluorophenyl)-2-methyl-1H-imidazol-5-yl)pyridin-2-yl)cyclopropanecarboxamide (1) as a potent dual inhibitor of both target kinases. In this study, we aimed to design selective GSK3β inhibitors based on our pyridinylimidazole scaffold. Our efforts resulted in several novel and potent GSK3β inhibitors with IC50 values in the low nanomolar range. 5-(2-(Cyclopropanecarboxamido)pyridin-4-yl)-4-cyclopropyl-1H-imidazole-2-carboxamide (6g) displayed very good kinase selectivity as well as metabolical stability and inhibited GSK3β activity in neuronal SH-SY5Y cells. Interestingly, we observed the importance of the 2-methylimidazole's tautomeric state for the compound activity. Finally, we reveal how this crucial tautomerism effect is surmounted by imidazole-2-carboxamides, which are able to stabilize the binding via enhanced water network interactions, regardless of their tautomeric state.
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Affiliation(s)
- Fabian Heider
- Department of Pharmaceutical and Medicinal Chemistry, Institute of Pharmaceutical Sciences, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 8, 72076 Tübingen, Germany
| | - Tatu Pantsar
- School of Pharmacy, University of Eastern Finland, P.O. BOX 1627, 70211 Kuopio, Finland
- Department of Internal Medicine VIII, University Hospital Tübingen, Otfried-Müller-Straße 14, 72076 Tübingen, Germany
| | - Mark Kudolo
- Department of Pharmaceutical and Medicinal Chemistry, Institute of Pharmaceutical Sciences, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 8, 72076 Tübingen, Germany
| | - Francesco Ansideri
- Department of Pharmaceutical and Medicinal Chemistry, Institute of Pharmaceutical Sciences, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 8, 72076 Tübingen, Germany
| | - Angela De Simone
- Department for Life Quality Studies, Alma Mater Studiorum-University of Bologna, Corso D’Augusto, 237, 47921 Rimini, Italy
| | - Letizia Pruccoli
- Department for Life Quality Studies, Alma Mater Studiorum-University of Bologna, Corso D’Augusto, 237, 47921 Rimini, Italy
| | - Taiane Schneider
- Cell Culture Laboratory, Postgraduate Program in Biotechnology, University of Vale do Taquari (Univates), Lajeado, RS 95900-00, Brazil
| | - Marcia Inês Goettert
- Cell Culture Laboratory, Postgraduate Program in Biotechnology, University of Vale do Taquari (Univates), Lajeado, RS 95900-00, Brazil
| | - Andrea Tarozzi
- Department for Life Quality Studies, Alma Mater Studiorum-University of Bologna, Corso D’Augusto, 237, 47921 Rimini, Italy
| | - Vincenza Andrisano
- Department for Life Quality Studies, Alma Mater Studiorum-University of Bologna, Corso D’Augusto, 237, 47921 Rimini, Italy
| | - Stefan A. Laufer
- Department of Pharmaceutical and Medicinal Chemistry, Institute of Pharmaceutical Sciences, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 8, 72076 Tübingen, Germany
| | - Pierre Koch
- Department of Pharmaceutical and Medicinal Chemistry, Institute of Pharmaceutical Sciences, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 8, 72076 Tübingen, Germany
- Department of Pharmaceutical/Medicinal Chemistry II, Institute of Pharmacy, University of Regensburg, Universitätsstraße 31, 93053 Regensburg, Germany
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Abstract
Heterocycles are very common substructures in a number of pharmaceuticals. Over the past several years, the use of palladium-catalyzed oxidative cyclization for heterocyclic synthesis has become much more prevalent. This review collects recent reports using palladium catalysis to synthesize a wide variety of heterocyclic scaffolds. Many of these reactions use oxygen as the terminal oxidant. Some salient mechanistic features are discussed.
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Affiliation(s)
- John C. Hershberger
- Department of Chemistry and Physics, Arkansas State University, State University, AR, United States
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Wang L, Wang Y, Zhang C, Li J, Meng Y, Dou M, Noguchi CT, Di L. Inhibiting Glycogen Synthase Kinase 3 Reverses Obesity-Induced White Adipose Tissue Inflammation by Regulating Apoptosis Inhibitor of Macrophage/CD5L-Mediated Macrophage Migration. Arterioscler Thromb Vasc Biol 2019; 38:2103-2116. [PMID: 30026270 DOI: 10.1161/atvbaha.118.311363] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Objective- Obesity-induced inflammation in white adipose tissue, characterized by increased macrophage infiltration and associated with macrophage population shift from anti-inflammatory M2 to proinflammatory M1 macrophages, largely contributes to obesity-induced insulin resistance and influences type 2 diabetes mellitus pathogenesis. GSK3 (glycogen synthase kinase 3), a serine/threonine kinase, has been reported to participate in various cellular processes. We sought to examine the potential mechanism by which GSK3, a serine/threonine kinase implicated in various cellular processes, modulates obesity-induced visceral adipose tissue (VAT) inflammation. Approach and Results- Male C57BL/6J mice were fed a high-fat diet for 10 weeks while being treated with vehicle control or GSK3 inhibitors SB216763 or CHIR99021. RNA-sequencing results using VAT demonstrated that GSK3 inhibitor treatment reversed obesity-specific expression of genes associated with inflammation. Consistently, GSK3 inhibition reduced obesity-induced VAT inflammation as characterized by decreased proinflammatory M1 macrophages but increased anti-inflammatory M2 macrophages in the VAT and reduced circulatory inflammatory monocytes. These anti-inflammatory effects of GSK3 inhibition were found to be driven, at least in part, by inhibiting production of apoptosis inhibitor of macrophage in macrophages via inactivating STAT3 to reduce free fatty acid and chemokine level produced from VAT to suppress the migration/chemotaxis of macrophages and monocytes. Conclusions- Our findings suggest that GSK3 may act as an important regulator of obesity-induced inflammation and characterize the novel role of GSK3 in shifting macrophage polarization and reinforce its therapeutic potential for obesity-induced inflammation and its associated diabetes mellitus.
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Affiliation(s)
- Li Wang
- From the Faculty of Health Sciences, University of Macau, China (L.W., Y.W., C.Z., J.L., Y.M., M.D., L.D.)
| | - Yuan Wang
- From the Faculty of Health Sciences, University of Macau, China (L.W., Y.W., C.Z., J.L., Y.M., M.D., L.D.)
| | - Chao Zhang
- From the Faculty of Health Sciences, University of Macau, China (L.W., Y.W., C.Z., J.L., Y.M., M.D., L.D.)
| | - Jingjing Li
- From the Faculty of Health Sciences, University of Macau, China (L.W., Y.W., C.Z., J.L., Y.M., M.D., L.D.)
| | - Yuan Meng
- From the Faculty of Health Sciences, University of Macau, China (L.W., Y.W., C.Z., J.L., Y.M., M.D., L.D.)
| | - Man Dou
- From the Faculty of Health Sciences, University of Macau, China (L.W., Y.W., C.Z., J.L., Y.M., M.D., L.D.)
| | - Constance Tom Noguchi
- Molecular Medicine Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD (T.N.)
| | - Lijun Di
- From the Faculty of Health Sciences, University of Macau, China (L.W., Y.W., C.Z., J.L., Y.M., M.D., L.D.)
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Adeyanju OA, Soetan OA, Olatunji LA. Drospirenone-containing contraceptive exerts positive effects on cardiac uric acid and PAI-1 but not GSK-3: Improved safety profiles in contraception? ACTA ACUST UNITED AC 2019; 26:227-231. [PMID: 31196791 DOI: 10.1016/j.pathophys.2019.06.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Revised: 06/01/2019] [Accepted: 06/05/2019] [Indexed: 11/24/2022]
Abstract
The use of combined oral contraceptives (COC) have been associated with increased risk of adverse cardiovascular events and elevated cardiac and circulating plasminogen activator inhibitor-1 (PAI-1) and glycogen synthase kinase-3 (GSK-3) have been implicated in these events. Contraceptives containing drospirenone, a progestin with anti-androgenic actions may have a positive or neutral effect on cardiac PAI-1 and GSK-3 levels. Studies on the favorable effects of oral contraceptives containing drospirenone when compared with other androgenic contraceptives have not been fully elucidated. We therefore sought to compare the effect of a contraceptive containing ethinyl estradiol and drospirenone (DSP) with a contraceptive containing ethinyl estradiol and levonorgestrel (LVG) on cardiac uric acid (UA), PAI-1, GSK-3 and some hematological parameters. Ten weeks old female Wistar rats were divided into three groups; control (CON), LVG or DSP treated rats. The treatment lasted for 8 weeks. Results showed that LVG and not DSP treatment led to increase in plasma and cardiac tissue UA, plasma and cardiac PAI-1 as well as granulocyte-lymphocyte ratio (GLR) and platelet-lymphocyte ratio (PLR). However, the DSP treatment affected the circulating GSK-3. Taken together, the findings showed that LVG and not DSP affected cardiac UA and PAI-1. These results suggest that COC containing drospirenone appears to have positive effects on cardiac UA and PAI-1 levels but do not affect GSK-3, hence, COC containing drospirenone may be a better and safer means of contraception compared to androgenic contraceptives.
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Affiliation(s)
- Oluwaseun A Adeyanju
- HOPE Cardiometabolic Research Team, Department of Physiology, College of Health Sciences, University of Ilorin, Ilorin, Nigeria; Cardiometabolic Research Unit, Department of Physiology, Afe Babalola University, Ado-Ekiti, Nigeria
| | - Olaniyi A Soetan
- HOPE Cardiometabolic Research Team, Department of Physiology, College of Health Sciences, University of Ilorin, Ilorin, Nigeria
| | - Lawrence A Olatunji
- HOPE Cardiometabolic Research Team, Department of Physiology, College of Health Sciences, University of Ilorin, Ilorin, Nigeria.
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Stygar D, Andrare D, Bażanów B, Chełmecka E, Sawczyn T, Skrzep-Poloczek B, Olszańska E, Karcz KW, Jochem J. The Impact of DJOS Surgery, a High Fat Diet and a Control Diet on the Enzymes of Glucose Metabolism in the Liver and Muscles of Sprague-Dawley Rats. Front Physiol 2019; 10:571. [PMID: 31164832 PMCID: PMC6534097 DOI: 10.3389/fphys.2019.00571] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Accepted: 04/24/2019] [Indexed: 12/27/2022] Open
Abstract
The prevalence of diabetes type 2 (T2DM) and obesity is growing exponentially and becoming a global public health problem. The enzymes of glucose metabolism play a role in the pathogenesis of insulin resistance and T2DM. A pathophysiological link between different dietary patterns, HFD, obesity, T2DM and the enzymes of glucose metabolism can be used as a potential target in therapeutic strategies for the treatment of obesity, and T2DM. The aim of this study was to measure the impact of DJOS bariatric surgery and different types of dietary patterns on glycogen synthase kinase 3 α (GSK-3α), glycogen phosphorylase (PYGM, PYGL), and phosphofructokinase (PFK-1) concentrations in liver and soleus muscle tissues of rats. After 8 weeks on a high-fat diet (HF) or control diet (CD), rats underwent duodenal-jejunal omega switch (DJOS) or SHAM (control) surgery. After surgery, for the next 8 weeks, half of DJOS/SHAM animals were kept on the same diet as before, and half had a changed diet. The concentrations of GSK-3α, PYGM, PYGL and PFK-1 were measured in the soleus muscles and livers of the Sprague-Dawley rats. The type of diet applied before/after surgery had stronger impact on levels of selected metabolic enzymes than DJOS or SHAM surgery. The impact of DJOS surgery was visible for GSK-3α and PYGL concentration in the liver but not in the soleus muscle tissue. The type of bariatric surgery had an impact on liver GSK-3α concentration in all studied groups except the CD/CD group, where the impact of diet was stronger. DJOS bariatric surgery influenced the level of PYGL in the livers of rats maintained on the CD/CD diet but not from other groups. The dietary patterns applied before and after bariatric surgery, had a stronger impact on enzymes’ concentrations than DJOS surgery, and the strong, deleterious effect of an HF was observed. A change of the diet per se showed a negative impact on the enzymes’ tissue concentration.
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Affiliation(s)
- Dominika Stygar
- Department of Physiology in Zabrze, School of Medicine with the Division of Dentistry in Zabrze, Medical University of Silesia, Katowice, Poland
| | - Dorian Andrare
- Clinic of General, Visceral, Transplantation and Vascular Surgery, Hospital of the Ludwig Maximilian University, Munich, Germany
| | - Barbara Bażanów
- Department of Pathology, Faculty of Veterinary Medicine, Wrocław University of Environmental and Life Sciences, Wrocław, Poland
| | - Elżbieta Chełmecka
- Department of Instrumental Analysis, School of Pharmacy with the Division of Laboratory Medicine in Sosnowiec, Medical University of Silesia, Katowice, Poland
| | - Tomasz Sawczyn
- Department of Physiology in Zabrze, School of Medicine with the Division of Dentistry in Zabrze, Medical University of Silesia, Katowice, Poland
| | - Bronisława Skrzep-Poloczek
- Department of Physiology in Zabrze, School of Medicine with the Division of Dentistry in Zabrze, Medical University of Silesia, Katowice, Poland
| | - Ewa Olszańska
- Department of Physiology in Zabrze, School of Medicine with the Division of Dentistry in Zabrze, Medical University of Silesia, Katowice, Poland
| | - Konrad Wojciech Karcz
- Clinic of General, Visceral, Transplantation and Vascular Surgery, Hospital of the Ludwig Maximilian University, Munich, Germany
| | - Jerzy Jochem
- Department of Physiology in Zabrze, School of Medicine with the Division of Dentistry in Zabrze, Medical University of Silesia, Katowice, Poland
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Indirubin-3'-monoxime prevents aberrant activation of GSK-3β/NF-κB and alleviates high fat-high fructose induced Aβ-aggregation, gliosis and apoptosis in mice brain. Int Immunopharmacol 2019; 70:396-407. [PMID: 30856390 DOI: 10.1016/j.intimp.2019.02.053] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Revised: 02/13/2019] [Accepted: 02/28/2019] [Indexed: 02/05/2023]
Abstract
Deciphering the molecular mechanisms of amyloid pathology and glial cell-mediated neuroinflammation, offers a novel avenue for therapeutic intervention against neurodegeneration. Recent findings demonstrate a crucial link between activation of glycogen synthase kinase-3β (GSK-3β), amyloid deposition and a neuroinflammatory state. However, studies demonstrating the pharmacological effects of GSK-3β inhibition and the interlinked molecular mechanisms still remain elusive. The present study explores whether high fat-high fructose diet (HFFD)-induced neuropathological changes could be alleviated by indirubin-3'-monoxime (IMX), a GSK-3β inhibitor. Male Swiss albino mice (8 weeks old) were fed with normal pellet or HFFD for 60 days. HFFD mice were treated with IMX once daily for last 7 days of the experimental period. HFFD fed-mice had significant amyloid deposits in cerebral cortex and hippocampus, and protein expression analyses showed activation of GSK-3β, nuclear translocation of NF-κB p65 and upregulation of inflammatory (TNF-α, IL-6, COX-2), astrocytic (GFAP), glial surface (CD-68) and pro-apoptotic markers (Bax and caspase-3). IMX treatment promotes the inhibitory phosphorylation of GSK-3β at Ser9 and moreover, a marked reduction in the phosphorylation of IKK-β, which prevents translocation and activation of NF-κB. Protein expression studies in IMX-treated brain tissues positively correlate with the anti-neuroinflammatory effects of GSK-3β inhibition. Taken together, our results provide substantial evidence that IMX could potentially attenuate neuroinflammation in coordination with the master transcription factor-NF-κB.
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Venditti P, Reed TT, Victor VM, Di Meo S. Insulin resistance and diabetes in hyperthyroidism: a possible role for oxygen and nitrogen reactive species. Free Radic Res 2019; 53:248-268. [PMID: 30843740 DOI: 10.1080/10715762.2019.1590567] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
In addition to insulin, glycemic control involves thyroid hormones. However, an excess of thyroid hormone can disturb the blood glucose equilibrium, leading to alterations of carbohydrate metabolism and, eventually, diabetes. Indeed, experimental and clinical hyperthyroidism is often accompanied by abnormal glucose tolerance. A common characteristic of hyperthyroidism and type 2 diabetes is the altered mitochondrial efficiency caused by the enhanced production of reactive oxygen and nitrogen species. It is known that an excess of thyroid hormone leads to increased oxidant production and mitochondrial oxidative damage. It can be hypothesised that these species represent the link between hyperthyroidism and development of insulin resistance and diabetes, even though direct evidence of this relationship is lacking. In this review, we examine the literature concerning the effects of insulin and thyroid hormones on glucose metabolism and discuss alterations of glucose metabolism in hyperthyroid conditions and the cellular and molecular mechanisms that may underline them.
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Affiliation(s)
- Paola Venditti
- a Dipartimento di Biologia , Università di Napoli Federico II , Napoli , Italy
| | - Tanea T Reed
- b Department of Chemistry , Eastern Kentucky University , Richmond , KY , USA
| | - Victor M Victor
- c Service of Endocrinology, Dr. Peset University Hospital, Foundation for the Promotion of Health and Biomedical Research in the Valencian Region (FISABIO) , Valencia , Spain.,d Department of Physiology , University of Valencia , Valencia , Spain
| | - Sergio Di Meo
- a Dipartimento di Biologia , Università di Napoli Federico II , Napoli , Italy
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Saleh M, Rüschenbaum S, Welsch C, Zeuzem S, Moradpour D, Gouttenoire J, Lange CM. Glycogen Synthase Kinase 3β Enhances Hepatitis C Virus Replication by Supporting miR-122. Front Microbiol 2018; 9:2949. [PMID: 30542341 PMCID: PMC6278592 DOI: 10.3389/fmicb.2018.02949] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2018] [Accepted: 11/16/2018] [Indexed: 12/13/2022] Open
Abstract
Hepatitis C virus (HCV) infection is associated with alterations in host lipid and insulin signaling cascades, which are partially explained by a dependence of the HCV life cycle on key molecules in these metabolic pathways. Yet, little is known on the role in the HCV life cycle of glycogen synthase kinase 3 (GSK3), one of the most important kinases in cellular metabolism. Therefore, the impact of GSK3 on the HCV life cycle was assessed in human hepatoma cell lines harboring subgenomic genotype 1b and 2a replicons or producing cell culture-derived HCV genotype 2a by exposure to synthetic GSK3 inhibitors, GSK3 gene silencing, overexpression of GSK3 constructs and immunofluorescence analyses. In addition, the role of GSK3 in hepatitis E virus (HEV) replication was investigated to assess virus specificity of the observed findings. We found that both inhibition of GSK3 function by synthetic inhibitors as well as silencing of GSK3β gene expression resulted in a decrease of HCV replication and infectious particle production, whereas silencing of the GSK3α isoform had no relevant effect on the HCV life cycle. Conversely, overexpression of GSK3β resulted in enhanced HCV replication. In contrast, GSK3β had no effect on replication of subgenomic HEV replicon. The pro-viral effect of GSK3β on HCV replication was mediated by supporting expression of microRNA-122 (miR-122), a micro-RNA which is mandatory for wild-type HCV replication, as GSK3 inhibitors suppressed miR-122 levels and as inhibitors of GSK3 had no antiviral effect on a miR-122-independent HCV mutant. In conclusion, we have identified GSK3β is a novel host factor supporting HCV replication by maintaining high levels of hepatic miR-122 expression.
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Affiliation(s)
- Maged Saleh
- Department of Internal Medicine 1, University Hospital Frankfurt, Frankfurt, Germany
| | - Sabrina Rüschenbaum
- Department of Internal Medicine 1, University Hospital Frankfurt, Frankfurt, Germany
| | - Christoph Welsch
- Department of Internal Medicine 1, University Hospital Frankfurt, Frankfurt, Germany
| | - Stefan Zeuzem
- Department of Internal Medicine 1, University Hospital Frankfurt, Frankfurt, Germany
| | - Darius Moradpour
- Division of Gastroenterology and Hepatology, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Lausanne, Switzerland
| | - Jérôme Gouttenoire
- Division of Gastroenterology and Hepatology, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Lausanne, Switzerland
| | - Christian M Lange
- Department of Internal Medicine 1, University Hospital Frankfurt, Frankfurt, Germany
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Wang Y, Wen L, Zhou S, Zhang Y, Wang XH, He YY, Davie A, Broadbent S. Effects of four weeks intermittent hypoxia intervention on glucose homeostasis, insulin sensitivity, GLUT4 translocation, insulin receptor phosphorylation, and Akt activity in skeletal muscle of obese mice with type 2 diabetes. PLoS One 2018; 13:e0203551. [PMID: 30199540 PMCID: PMC6130870 DOI: 10.1371/journal.pone.0203551] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Accepted: 08/22/2018] [Indexed: 01/03/2023] Open
Abstract
AIMS The aims of this study were to determine the effects of four weeks of intermittent exposure to a moderate hypoxia environment (15% oxygen), and compare with the effects of exercise in normoxia or hypoxia, on glucose homeostasis, insulin sensitivity, GLUT4 translocation, insulin receptor phosphorylation, Akt-dependent GSK3 phosphorylation and Akt activity in skeletal muscle of obese mice with type 2 diabetes. METHODS C57BL/6J mice that developed type 2 diabetes with a high-fat-diet (55% fat) (fasting blood glucose, FBG = 13.9 ± 0.69 (SD) mmol/L) were randomly allocated into diabetic control (DC), rest in hypoxia (DH), exercise in normoxia (DE), and exercise in hypoxia (DHE) groups (n = 7, each), together with a normal-diet (4% fat) control group (NC, FBG = 9.1 ± 1.11 (SD) mmol/L). The exercise groups ran on a treadmill at intensities of 75-90% VO2max. The interventions were applied one hour per day, six days per week for four weeks. Venous blood samples were analysed for FBG, insulin (FBI) and insulin sensitivity (QUICKI) pre and post the intervention period. The quadriceps muscle samples were collected 72 hours post the last intervention session for analysis of GLUT4 translocation, insulin receptor phosphorylation, Akt expression and phosphorylated GSK3 fusion protein by western blot. Akt activity was determined by the ratio of the phosphorylated GSK3 fusion protein to the total Akt protein. RESULTS The FBG of the DH, DE and DHE groups returned to normal level (FBG = 9.4 ± 1.50, 8.86 ± 0.94 and 9.0 ± 1.13 (SD) mmol/L for DH, DE and DHE respectively, P < 0.05), with improved insulin sensitivity compared to DC (P < 0.05), after the four weeks treatment, while the NC and DC showed no significant changes, as analysed by general linear model with repeated measures. All three interventions resulted in a significant increase of GLUT4 translocation to cell membrane compared to the DC group (P < 0.05). The DE and DH showed a similar level of insulin receptor phosphorylation compared with NC that was significantly lower than the DC (P < 0.05) post intervention. The DH and DHE groups showed a significantly higher Akt activity compared to the DE, DC and NC (P < 0.05) post intervention, as analysed by one-way ANOVA. CONCLUSIONS This study produced new evidence that intermittent exposure to mild hypoxia (0.15 FiO2) for four weeks resulted in normalisation of FBG, improvement in whole body insulin sensitivity, and a significant increase of GLUT4 translocation in the skeletal muscle, that were similar to the effects of exercise intervention during the same time period, in mice with diet-induced type 2 diabetes. However, exercise in hypoxia for four weeks did not have additive effects on these responses. The outcomes of the research may contribute to the development of effective, alternative and complementary interventions for management of hyperglycaemia and type 2 diabetes, particularly for individuals with limitations in participation of physical activity.
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Affiliation(s)
- Yun Wang
- School of Health and Human Sciences, Southern Cross University, Lismore, Australia
| | - Li Wen
- Key Laboratory of Exercise Physiology and Sports Medicine, Tianjin University of Sport, Tianjin, China
| | - Shi Zhou
- School of Health and Human Sciences, Southern Cross University, Lismore, Australia
| | - Yong Zhang
- Key Laboratory of Exercise Physiology and Sports Medicine, Tianjin University of Sport, Tianjin, China
| | - Xin-Hao Wang
- Department of Health and Exercise Science, Tianjin University of Sport, Tianjin, China
| | - You-Yu He
- Department of Health and Exercise Science, Tianjin University of Sport, Tianjin, China
| | - Allan Davie
- School of Health and Human Sciences, Southern Cross University, Lismore, Australia
| | - Suzanne Broadbent
- School of Health and Human Sciences, Southern Cross University, Lismore, Australia
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Badmus OO, Michael OS, Rabiu S, Olatunji LA. Gestational glucocorticoid exposure disrupts glucose homeostasis that is accompanied by increased endoglin and DPP-4 activity instead of GSK-3 in rats. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2018; 60:66-75. [PMID: 29677638 DOI: 10.1016/j.etap.2018.04.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Revised: 04/11/2018] [Accepted: 04/12/2018] [Indexed: 05/27/2023]
Abstract
Gestational glucocorticoid (GC) treatment has been associated with cardiometabolic disorder (CMD) in offspring's in later life. Elevated dipeptidyl peptidase-4 (DPP-4) activity, endoglin and glycogen synthase kinase-3 (GSK-3) has also been implicated in the development of insulin resistance (IR) and/or vascular inflammation. We aimed to investigate the impact of GC exposure on glucose metabolism and the circulating levels of inflammatory biomarkers, DPP-4 activity and GSK-3 in pregnant rats. Pregnant Wistar rats received either vehicle or dexamethasone (DEX; 0.2 mg/kg; po) between gestational days 14 and 19. Gestational GC exposure resulted in impaired glucose homeostasis that is accompanied with elevated circulating levels of inflammatory biomarkers (endoglin, uric acid, and platelet/lymphocyte ratio), oxidative stress (malondialdehyde), blood viscosity, reduced NO level and increased DPP-4 activity. However, these effects were associated with atherogenic dyslipidemia and reduced GSK-3.We conclude that plasma endoglin, a marker of vascular inflammation, and plasma DPP-4 activity are increased in pregnant rats treated with GC during late gestation. Therefore, glucose deregulation associated with gestational GC exposure is through endoglin-/DPP-4-dependent but GSK-3-independent pathway.
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Affiliation(s)
- Olufunto O Badmus
- Department of Physiology & Hope Cardiometabolic Research Team, College of Health Sciences, University of Ilorin, Ilorin, Nigeria; Department of Public Health, Kwara State University, Malete, Nigeria
| | - Olugbenga S Michael
- Department of Physiology & Hope Cardiometabolic Research Team, College of Health Sciences, University of Ilorin, Ilorin, Nigeria; Department of Physiology, Cardiometabolic Research Unit, College of Health and Medical sciences, Bowen University, Iwo, Nigeria
| | - Saheed Rabiu
- Department of Physiology & Hope Cardiometabolic Research Team, College of Health Sciences, University of Ilorin, Ilorin, Nigeria
| | - Lawrence A Olatunji
- Department of Physiology & Hope Cardiometabolic Research Team, College of Health Sciences, University of Ilorin, Ilorin, Nigeria.
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Michael OS, Olatunji LA. Ameliorative effect of nicotine exposure on insulin resistance is accompanied by decreased cardiac glycogen synthase kinase-3 and plasminogen activator inhibitor-1 during oral oestrogen-progestin therapy. Arch Physiol Biochem 2018; 124:139-148. [PMID: 28868937 DOI: 10.1080/13813455.2017.1369549] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
CONTEXT Cigarette smoking is considered to be a major risk factor for the development of diabetes and cardiovascular disease. Oestrogen-progestin combined oral contraceptive (COC) use has been associated with adverse cardiometabolic events. OBJECTIVE We hypothesized that nicotine would ameliorate insulin resistance (IR) that is accompanied by decreased cardiac glycogen synthase kinase-3 (GSK-3) and plasminogen activator inhibitor-1 (PAI-1). METHODS Female Wistar rats received (po) low-(0.1 mg/kg) or high-nicotine (1.0 mg/kg) with or without COC containing 5.0 µg levonorgestrel plus 1.0 µg ethinylestradiol daily for 8 weeks. RESULTS Data showed that COC treatment or nicotine exposure led to IR, glucose deregulation, atherogenic dyslipidemia, increased corticosterone, aldosterone, cardiac and circulating GSK-3 values and PAI-1. However, these effects with the exception of corticosterone and aldosterone were ameliorated in COC + nicotine-exposed rats. CONCLUSION Amelioration of IR induced by COC treatment is accompanied by decreased circulating PAI-1, cardiac PAI-1 and GSK-3 instead of circulating aldosterone and corticosterone.
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Affiliation(s)
- Olugbenga S Michael
- a Cardiovascular Research Laboratory, Department of Physiology , University of Ilorin, Ilorin, Nigeria
- b Hope Cardiometabolic Research Centre , Ilorin , Nigeria
- c Cardiometabolic Research Unit, Department of Physiology , College of Health sciences, Bowen University , Iwo , Nigeria
| | - Lawrence A Olatunji
- a Cardiovascular Research Laboratory, Department of Physiology , University of Ilorin, Ilorin, Nigeria
- b Hope Cardiometabolic Research Centre , Ilorin , Nigeria
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Rosa AP, Mescka CP, Catarino FM, de Castro AL, Teixeira RB, Campos C, Baldo G, Graf DD, de Mattos-Dutra A, Dutra-Filho CS, da Rosa Araujo AS. Neonatal hyperglycemia induces cell death in the rat brain. Metab Brain Dis 2018; 33:333-342. [PMID: 29260360 DOI: 10.1007/s11011-017-0170-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/26/2017] [Accepted: 12/11/2017] [Indexed: 02/06/2023]
Abstract
Several studies have examined neonatal diabetes, a rare disease characterized by hyperglycemia and low insulin levels that is usually diagnosed in the first 6 month of life. Recently, the effects of diabetes on the brain have received considerable attention. In addition, hyperglycemia may perturb brain function and might be associated with neuronal death in adult rats. However, few studies have investigated the damaging effects of neonatal hyperglycemia on the rat brain during central nervous system (CNS) development, particularly the mechanisms involved in the disease. Thus, in the present work, we investigated whether neonatal hyperglycemia induced by streptozotocin (STZ) promoted cell death and altered the levels of proteins involved in survival/death pathways in the rat brain. Cell death was assessed using FluoroJade C (FJC) staining and the expression of the p38 mitogen-activated protein kinase (p38), phosphorylated-c-Jun amino-terminal kinase (p-JNK), c-Jun amino-terminal kinase (JNK), protein kinase B (Akt), phosphorylated-protein kinase B (p-Akt), glycogen synthase kinase-3β (Gsk3β), B-cell lymphoma 2 (Bcl2) and Bcl2-associated X protein (Bax) protein were measured by Western blotting. The main results of this study showed that the metabolic alterations observed in diabetic rats (hyperglycemia and hypoinsulinemia) increased p38 expression and decreased p-Akt expression, suggesting that cell survival was altered and cell death was induced, which was confirmed by FJC staining. Therefore, the metabolic conditions observed during neonatal hyperglycemia may contribute to the harmful effect of diabetes on the CNS in a crucial phase of postnatal neuronal development.
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Affiliation(s)
- Andrea Pereira Rosa
- Programa de Pós-Graduação em Ciências Biológicas: Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil.
- Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Rua Ramiro Barcelos, 2600 (Anexo), Porto Alegre, RS, 90035-003, Brazil.
| | - Caroline Paula Mescka
- Programa de Pós-Graduação em Ciências Biológicas: Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Felipe Maciel Catarino
- Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Rua Ramiro Barcelos, 2600 (Anexo), Porto Alegre, RS, 90035-003, Brazil
| | - Alexandre Luz de Castro
- Programa de Pós-Graduação em Ciências Biológicas: Fisiologia, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Rayane Brinck Teixeira
- Programa de Pós-Graduação em Ciências Biológicas: Fisiologia, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Cristina Campos
- Programa de Pós-Graduação em Ciências Biológicas: Fisiologia, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Guilherme Baldo
- Programa de Pós-Graduação em Ciências Biológicas: Fisiologia, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Débora Dalmas Graf
- Departamento de Ciências Básicas da Saúde, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, RS, Brazil
| | - Angela de Mattos-Dutra
- Departamento de Ciências Básicas da Saúde, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, RS, Brazil
| | - Carlos Severo Dutra-Filho
- Programa de Pós-Graduação em Ciências Biológicas: Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
- Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Rua Ramiro Barcelos, 2600 (Anexo), Porto Alegre, RS, 90035-003, Brazil
| | - Alex Sander da Rosa Araujo
- Programa de Pós-Graduação em Ciências Biológicas: Fisiologia, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
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de Groot T, Damen L, Kosse L, Alsady M, Doty R, Baumgarten R, Sheehan S, van der Vlag J, Korstanje R, Deen PMT. Lithium reduces blood glucose levels, but aggravates albuminuria in BTBR-ob/ob mice. PLoS One 2017; 12:e0189485. [PMID: 29244860 PMCID: PMC5731748 DOI: 10.1371/journal.pone.0189485] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Accepted: 11/27/2017] [Indexed: 01/13/2023] Open
Abstract
Glycogen synthase kinase 3 (GSK3) plays an important role in the development of diabetes mellitus and renal injury. GSK3 inhibition increases glucose uptake in insulin-insensitive muscle and adipose tissue, while it reduces albuminuria and glomerulosclerosis in acute kidney injury. The effect of chronic GSK3 inhibition in diabetic nephropathy is not known. We tested the effect of lithium, the only clinical GSK3 inhibitor, on the development of diabetes mellitus and kidney injury in a mouse model of diabetic nephropathy. Twelve-week old female BTBR-ob/ob mice were treated for 12 weeks with 0, 10 and 40 mmol LiCl/kg after which the development of diabetes and diabetic nephropathy were analysed. In comparison to BTBR-WT mice, ob/ob mice demonstrated elevated bodyweight, increased blood glucose/insulin levels, urinary albumin and immunoglobulin G levels, glomerulosclerosis, reduced nephrin abundance and a damaged proximal tubule brush border. The lithium-10 and -40 diets did not affect body weight and resulted in blood lithium levels of respectively <0.25 mM and 0.48 mM. The Li-40 diet fully rescued the elevated non-fasting blood glucose levels. Importantly, glomerular filtration rate was not affected by lithium, while urine albumin and immunoglobulin G content were further elevated. While lithium did not worsen the glomerulosclerosis, proximal tubule function seemed affected by lithium, as urinary NGAL levels were significantly increased. These results demonstrate that lithium attenuates non-fasting blood glucose levels in diabetic mice, but aggravates urinary albumin and immunoglobulin G content, possibly resulting from proximal tubule dysfunction.
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Affiliation(s)
- Theun de Groot
- The Jackson Laboratory, Bar Harbor, Maine, United States of America
- Department of Physiology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Lars Damen
- Department of Physiology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Leanne Kosse
- The Jackson Laboratory, Bar Harbor, Maine, United States of America
- Department of Physiology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Mohammad Alsady
- Department of Physiology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Rosalinda Doty
- The Jackson Laboratory, Bar Harbor, Maine, United States of America
| | | | - Susan Sheehan
- The Jackson Laboratory, Bar Harbor, Maine, United States of America
| | - Johan van der Vlag
- Department of Nephrology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Ron Korstanje
- The Jackson Laboratory, Bar Harbor, Maine, United States of America
| | - Peter M. T. Deen
- Department of Physiology, Radboud University Medical Center, Nijmegen, The Netherlands
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Saraswati AP, Ali Hussaini SM, Krishna NH, Babu BN, Kamal A. Glycogen synthase kinase-3 and its inhibitors: Potential target for various therapeutic conditions. Eur J Med Chem 2017; 144:843-858. [PMID: 29306837 DOI: 10.1016/j.ejmech.2017.11.103] [Citation(s) in RCA: 74] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2016] [Revised: 11/29/2017] [Accepted: 11/30/2017] [Indexed: 11/16/2022]
Abstract
Glycogen Synthase Kinase-3 (GSK-3) is a serine/threonine kinase which is ubiquitously expressed and is regarded as a regulator for various cellular events and signalling pathways. It exists in two isoforms, GSK-3α and GSK-3β and can phosphorylate a wide range of substrates. Aberrancy in the GSK-3 activity can lead to various diseases like Alzheimer's, diabetes, cancer, neurodegeneration etc., rendering it an attractive target to develop potent and specific inhibitors. The present review focuses on the recent developments in the area of GSK-3 inhibitors and also enlightens its therapeutic applicability in various disease conditions.
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Affiliation(s)
- A Prasanth Saraswati
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, 500 037, India
| | - S M Ali Hussaini
- Medicinal Chemistry & Pharmacology, CSIR-Indian Institute of Chemical Technology, Hyderabad, 500 007, India
| | - Namballa Hari Krishna
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, 500 037, India; Medicinal Chemistry & Pharmacology, CSIR-Indian Institute of Chemical Technology, Hyderabad, 500 007, India
| | - Bathini Nagendra Babu
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, 500 037, India
| | - Ahmed Kamal
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, 500 037, India; Medicinal Chemistry & Pharmacology, CSIR-Indian Institute of Chemical Technology, Hyderabad, 500 007, India; School Pharmaceutical Education and Research (SPER), Jamia Hamdard, New Delhi 110062, India.
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Figlewicz DP, Jay J, West CH, Zavosh A, Hampe CS, Radtke JR, Raskind MA, Peskind ER. Effect of dietary palmitic and stearic acids on sucrose motivation and hypothalamic and striatal cell signals in the rat. Am J Physiol Regul Integr Comp Physiol 2017; 314:R191-R200. [PMID: 29092861 DOI: 10.1152/ajpregu.00340.2017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
We have reported that motivation for sucrose is increased in rats fed a moderate (31%) mixed-fat diet for 4-6 wk. In this study, rats were fed diets containing 32% stearic (STEAR) or palmitic (PALM) acid, and behavior, metabolic profile, and cell signals were compared with those of rats fed a matched low-fat diet (LF; 11% fat) diet. Rats fed STEAR or PALM increased sucrose motivation relative to LF rats (one-way ANOVA for lever presses; P = 0.03). Diet did not change fasting glucose, insulin, total cholesterol, triglycerides, intravenous glucose tolerance test glucose profile, percent body fat, or total kilocalories, although kilocalories as fat were increased (ANOVA, P < 0.05). Cell signals were assessed in rats ranked from high to low sucrose motivation. Diet did not alter Thr and Ser phosphorylation of Akt in the medial hypothalamus (HYP) and striatum (STR). However, Ser phosphorylation of GSK3Β was decreased in HYP and STR from both high- and low-performer tertiles of STEAR and PALM rats (ANOVA within each brain region, P < 0.05). Two histone 3 (H3) modifications were also assessed. Although there was no effect of diet on the transcription-repressive H3 modification, H3K27me3, the transcription-permissive H3 modification, H3K4me3, was significantly decreased in the HYP of high performers fed PALM or STEAR (ANOVA, P = 0.013). There was no effect of diet on H3K4me3 levels in HYP of low performers, or in STR. Our findings suggest signal-specific and brain region-specific effects of PALM or STEAR diets and may link downstream signaling effects of GSK3Β activity and H3 modifications with enhanced motivational behavior.
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Affiliation(s)
- Dianne P Figlewicz
- Research and Development Service, Veterans Affairs Puget Sound Health Care System, Seattle, Washington.,Department of Psychiatry and Behavioral Sciences, University of Washington School of Medicine , Seattle, Washington
| | - Jennifer Jay
- Department of Psychiatry and Behavioral Sciences, University of Washington School of Medicine , Seattle, Washington
| | - Constance H West
- Research and Development Service, Veterans Affairs Puget Sound Health Care System, Seattle, Washington
| | - Aryana Zavosh
- Department of Psychiatry and Behavioral Sciences, University of Washington School of Medicine , Seattle, Washington
| | - Christiane S Hampe
- Department of Medicine, University of Washington School of Medicine , Seattle, Washington
| | - Jared R Radtke
- Department of Medicine, University of Washington School of Medicine , Seattle, Washington
| | - Murray A Raskind
- Department of Psychiatry and Behavioral Sciences, University of Washington School of Medicine , Seattle, Washington.,Veterans Affairs Northwest Network Mental Illness Research, Education, and Clinical Center, Veterans Affairs Puget Sound Health Care System, Seattle, Washington
| | - Elaine R Peskind
- Department of Psychiatry and Behavioral Sciences, University of Washington School of Medicine , Seattle, Washington.,Veterans Affairs Northwest Network Mental Illness Research, Education, and Clinical Center, Veterans Affairs Puget Sound Health Care System, Seattle, Washington
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GSK-3 Inhibitors: Anti-Diabetic Treatment Associated with Cardiac Risk? : Editorial to: "The Impact of Chronic Glycogen Synthase Kinase-3 Inhibition on Remodeling of Normal and Pre-Diabetic Rat Hearts." by Barbara Huisamen et al. Cardiovasc Drugs Ther 2017; 30:233-5. [PMID: 27311575 DOI: 10.1007/s10557-016-6669-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Xu J, Zhang W, Lu Z, Zhang F, Ding W. Airborne PM 2.5-Induced Hepatic Insulin Resistance by Nrf2/JNK-Mediated Signaling Pathway. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2017; 14:ijerph14070787. [PMID: 28708100 PMCID: PMC5551225 DOI: 10.3390/ijerph14070787] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Revised: 07/07/2017] [Accepted: 07/10/2017] [Indexed: 12/20/2022]
Abstract
Animal and epidemiological studies have suggested that exposure to airborne particulate matter (PM) with an aerodynamic diameter less than 2.5 μm (PM2.5) is associated with the risk of developing type 2 diabetes. However, the mechanism underlying this risk is poorly understood. In the present study, we investigated the effects of PM2.5 exposure on glucose homeostasis and related signaling pathways in mice. Wild-type and nuclear factor erythroid 2-related factor 2 (Nrf2) knockout (Nrf2−/−) C57BL/6 male mice were exposed to either ambient concentrated PM2.5 or filtered air (FA) for 12 weeks through a whole-body PM exposure system. At the end of the exposure, we assessed liver damage, and performed metabolic studies, gene expressions, as well as molecular signal transductions to determine the signaling pathways involving oxidative responses, insulin signaling, and glucose metabolism. Our results indicated that PM2.5 exposure for 12 weeks caused significant liver damage as evidenced by elevated levels of aminotransferase (AST) and alanine aminotransferase (ALT). Furthermore, PM2.5 exposure induced impaired glucose tolerance and inhibited glycogen synthesis, leading to hepatic insulin resistance indicated by higher glucose levels, higher area under the curve (AUC), and homeostasis model assessment of insulin resistance (HOMA-IR) values. We further found that PM2.5 exposure significantly increased the expressions of Nrf2 and Nrf2-regulated antioxidant genes. Moreover, PM2.5 exposure activated the c-Jun N-terminal kinase (JNK) signaling pathway and increased insulin receptor substrate-1 (IRS-1) phosphorylation at Ser307, but reduced protein kinase B phosphorylation at Ser473. Taken together, our study demonstrated PM2.5 exposure triggered Nrf2-mediated oxidative responses and activated the JNK-mediated inhibitory signaling pathway, resulting in hepatic insulin resistance.
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Affiliation(s)
- Jinxia Xu
- Laboratory of Environment and Health, College of Life Sciences, University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China.
- Sino-Danish College, University of Chinese Academy of Sciences, No. 3 Zhongguancun South 1st Alley, Beijing 100190, China.
| | - Wei Zhang
- Laboratory of Environment and Health, College of Life Sciences, University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China.
| | - Zhongbing Lu
- Laboratory of Environment and Health, College of Life Sciences, University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China.
| | - Fang Zhang
- Laboratory of Environment and Health, College of Life Sciences, University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China.
| | - Wenjun Ding
- Laboratory of Environment and Health, College of Life Sciences, University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China.
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Mikosha AS, Kovzun OI, Tronko MD. Biological effects of lithium – fundamental and medical aspects. UKRAINIAN BIOCHEMICAL JOURNAL 2017. [DOI: 10.15407/ubj89.03.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
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