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Vazquez-Jimenez JG, Corpus-Navarro MS, Rodriguez-Chavez JM, Jaramillo-Ramirez HJ, Hernandez-Aranda J, Galindo-Hernandez O, Machado-Contreras JR, Trejo-Trejo M, Guerrero-Hernandez A, Olivares-Reyes JA. The Increased Expression of Regulator of G-Protein Signaling 2 (RGS2) Inhibits Insulin-Induced Akt Phosphorylation and Is Associated with Uncontrolled Glycemia in Patients with Type 2 Diabetes. Metabolites 2021; 11:91. [PMID: 33562475 PMCID: PMC7915073 DOI: 10.3390/metabo11020091] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2020] [Revised: 01/23/2021] [Accepted: 01/29/2021] [Indexed: 12/17/2022] Open
Abstract
Experimental evidence in mice models has demonstrated that a high regulator of G-protein signaling 2 (RSG2) protein levels precede an insulin resistance state. In the same context, a diet rich in saturated fatty acids induces an increase in RGS2 protein expression, which has been associated with decreased basal metabolism in mice; however, the above has not yet been analyzed in humans. For this reason, in the present study, we examined the association between RGS2 expression and insulin resistance state. The incubation with palmitic acid (PA), which inhibits insulin-mediated Akt Ser473 phosphorylation, resulted in the increased RGS2 expression in human umbilical vein endothelial-CS (HUVEC-CS) cells. The RGS2 overexpression without PA was enough to inhibit insulin-mediated Akt Ser473 phosphorylation in HUVEC-CS cells. Remarkably, the platelet RGS2 expression levels were higher in type 2 diabetes mellitus (T2DM) patients than in healthy donors. Moreover, an unbiased principal component analysis (PCA) revealed that RGS2 expression level positively correlated with glycated hemoglobin (HbA1c) and negatively with age and high-density lipoprotein cholesterol (HDL) in T2DM patients. Furthermore, PCA showed that healthy subjects segregated from T2DM patients by having lower levels of HbA1c and RGS2. These results demonstrate that RGS2 overexpression leads to decreased insulin signaling in a human endothelial cell line and is associated with poorly controlled diabetes.
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Affiliation(s)
- J. Gustavo Vazquez-Jimenez
- Department of Biochemistry, Center for Research and Advanced Studies of the National Polytechnic Institute, CINVESTAV-IPN, Mexico City 07360, Mexico; (J.G.V.-J.); (J.H.-A.); (A.G.-H.)
- Laboratory of Molecular Pathogenesis, School of Medicine, Campus Mexicali, Autonomous University of Baja California, Mexicali, Baja California 21000, Mexico; (M.S.C.-N.); (J.M.R.-C.); (J.R.M.-C.)
| | - M. Stephanie Corpus-Navarro
- Laboratory of Molecular Pathogenesis, School of Medicine, Campus Mexicali, Autonomous University of Baja California, Mexicali, Baja California 21000, Mexico; (M.S.C.-N.); (J.M.R.-C.); (J.R.M.-C.)
| | - J. Miguel Rodriguez-Chavez
- Laboratory of Molecular Pathogenesis, School of Medicine, Campus Mexicali, Autonomous University of Baja California, Mexicali, Baja California 21000, Mexico; (M.S.C.-N.); (J.M.R.-C.); (J.R.M.-C.)
| | | | - Judith Hernandez-Aranda
- Department of Biochemistry, Center for Research and Advanced Studies of the National Polytechnic Institute, CINVESTAV-IPN, Mexico City 07360, Mexico; (J.G.V.-J.); (J.H.-A.); (A.G.-H.)
| | - Octavio Galindo-Hernandez
- Laboratory of Biochemistry, School of Medicine, Campus Mexicali, Autonomous University of Baja California, Mexicali, Baja California 21000, Mexico;
| | - J. Rene Machado-Contreras
- Laboratory of Molecular Pathogenesis, School of Medicine, Campus Mexicali, Autonomous University of Baja California, Mexicali, Baja California 21000, Mexico; (M.S.C.-N.); (J.M.R.-C.); (J.R.M.-C.)
| | - Marina Trejo-Trejo
- School of Sports, Campus Mexicali, Autonomous University of Baja California, Mexicali, Baja California 21000, Mexico;
| | - Agustin Guerrero-Hernandez
- Department of Biochemistry, Center for Research and Advanced Studies of the National Polytechnic Institute, CINVESTAV-IPN, Mexico City 07360, Mexico; (J.G.V.-J.); (J.H.-A.); (A.G.-H.)
| | - J. Alberto Olivares-Reyes
- Department of Biochemistry, Center for Research and Advanced Studies of the National Polytechnic Institute, CINVESTAV-IPN, Mexico City 07360, Mexico; (J.G.V.-J.); (J.H.-A.); (A.G.-H.)
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Salazar-Camarena DC, Ortiz-Lazareno PC, Cruz A, Oregon-Romero E, Machado-Contreras JR, Muñoz-Valle JF, Orozco-López M, Marín-Rosales M, Palafox-Sánchez CA. Association of BAFF, APRIL serum levels, BAFF-R, TACI and BCMA expression on peripheral B-cell subsets with clinical manifestations in systemic lupus erythematosus. Lupus 2015; 25:582-92. [DOI: 10.1177/0961203315608254] [Citation(s) in RCA: 81] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Accepted: 09/02/2015] [Indexed: 12/30/2022]
Abstract
Objective B-cell-activating factor (BAFF) and a proliferation-inducing ligand (APRIL) signaling pathways regulate B-cell survival through interactions with their receptors BAFF-R, TACI and BCMA. We evaluated the association of these ligands/receptors on B-cell subsets according to clinical manifestations of systemic lupus erythematosus (SLE). Methods BAFF and APRIL serum concentrations were measured in 30 SLE patients by enzyme-linked immunosorbent assay. The BAFF-R, TACI and BCMA expression was analyzed on each B cell subset (CD19 + CD27-CD38–/ + naïve; CD19 + CD27 + CD38–/ + memory; CD19 + CD27-CD38 + + immature and CD19 + CD27 + CD38 + + plasma cells) by flow cytometry, and compared among patients with different clinical manifestations as well as healthy controls (HCs). Results Serum BAFF and APRIL levels were high in SLE patients and correlated with the Mex-SLEDAI disease activity index ( r = 0.584; p = 0.001 and r = 0.456; p = 0.011, respectively). The SLE patients showed an increased proportion of memory and plasma B cells ( p < 0.05). BAFF-R, TACI and BCMA expression in SLE patients was decreased in almost all B cell subsets compared to HCs ( p < 0.05). A lower BCMA expression was associated with severe disease activity, glomerulonephritis, serositis and hemolytic anemia ( p < 0.01). BCMA expression showed a negative correlation with Mex-SLEDAI score ( r = –0.494, p = 0.006). Conclusions Decreased BCMA expression on peripheral B cells according to severe disease activity suggests that BCMA plays an important regulating role in B-cell hyperactivity and immune tolerance homeostasis in SLE patients.
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Affiliation(s)
- D C Salazar-Camarena
- Instituto de Investigación en Ciencias Biomédicas (IICB), Departamento de Clínicas Médicas, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, Jalisco, México
| | - P C Ortiz-Lazareno
- División de Inmunología, Centro de Investigación Biomédica de Occidente (CIBO), Instituto Mexicano del Seguro Social IMSS, Guadalajara, Jalisco, México
| | - A Cruz
- Instituto de Investigación en Ciencias Biomédicas (IICB), Departamento de Clínicas Médicas, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, Jalisco, México
| | - E Oregon-Romero
- Instituto de Investigación en Ciencias Biomédicas (IICB), Departamento de Clínicas Médicas, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, Jalisco, México
| | - J R Machado-Contreras
- Instituto de Investigación en Ciencias Biomédicas (IICB), Departamento de Clínicas Médicas, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, Jalisco, México
| | - J F Muñoz-Valle
- Instituto de Investigación en Ciencias Biomédicas (IICB), Departamento de Clínicas Médicas, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, Jalisco, México
| | - M Orozco-López
- Instituto de Investigación en Ciencias Biomédicas (IICB), Departamento de Clínicas Médicas, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, Jalisco, México
| | - M Marín-Rosales
- Instituto de Investigación en Ciencias Biomédicas (IICB), Departamento de Clínicas Médicas, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, Jalisco, México
| | - C A Palafox-Sánchez
- Instituto de Investigación en Ciencias Biomédicas (IICB), Departamento de Clínicas Médicas, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, Jalisco, México
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