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Luo Q, Ling Z, Huang X, Zuo Y. Association of IRS-1 and IRS-2 polymorphisms with predisposition to type-2 diabetes (T2D): a meta-analysis and trial sequential analysis. NUCLEOSIDES, NUCLEOTIDES & NUCLEIC ACIDS 2023; 42:837-851. [PMID: 37173295 DOI: 10.1080/15257770.2023.2211122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 04/24/2023] [Accepted: 04/30/2023] [Indexed: 05/15/2023]
Abstract
Background: Insulin Receptor Substrate (IRS) molecules play a major role in insulin signalling, and single nucleotide polymorphisms in the IRS-1 (rs1801278) and IRS-2 (rs1805097) gene has been associated with the predisposition to the development of type-2 diabetes (T2D) in some population. However, the observations remain contradictory. Discrepancies in the results have been attributed to several factors, and consideration of a smaller sample size is one of them. To reach a valid conclusion, we performed a meta-analysis of the genetic association between IRS-1 (rs1801278) and IRS-2 (rs1805097) polymorphism with a predisposition to T2D. Materials and Methods: The literature search was performed in different databases such as PubMed, Science Direct, and Scopus. All relevant articles were screened and based in inclusion and exclusion criteria eligible reports were identified. Baseline characteristics, genotype and allele frequencies were extracted from the eligible reports. The meta-analysis was performed by comprehensive meta-analysis software v3.3.070 and odds ratios, 95% confidence interval and probability values were calculated to find out association of IRS-1 and IRS-2 polymorphisms with rhinitis. Results: A total of seven studies comprising 1287 cases and 1638 control were considered for the present meta-analysis for the association of IRS-1 (rs1801278) polymorphism with T2D, and no significant association was observed. For IRS-2 (rs1805097) polymorphism, data from eight cohorts (cases: 1824, controls: 1786) were considered. The heterozygous genetic comparison models revealed a significant protective association against T2D predisposition (p = 0.017, OR = 0.841, 95% CI = 0.729 to 0.970). The trial sequential analysis revealed the requirement of additional case-control studies to draw a definitive conclusion for IRS-1 polymorphism. Conclusions: IRS-2 rs1805097 heterozygotes are protected from T2D development. However, IRS-1 (rs1801278) is not associated with a subject's proclivity for T2D.
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Affiliation(s)
- Qiaoyan Luo
- Department of Endocrinology, Affiliated Hospital of North Sichuan Medical College, Nanchong City, Sichuan Province, China
| | - Zhifa Ling
- Department of Blood Transfusion, Affiliated Hospital of North Sichuan Medical College, Nanchong City, Sichuan Province, China
| | - Xiaojia Huang
- Department of Endocrinology, Affiliated Hospital of North Sichuan Medical College, Nanchong City, Sichuan Province, China
| | - Ying Zuo
- Department of Endocrinology, Affiliated Hospital of North Sichuan Medical College, Nanchong City, Sichuan Province, China
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2
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Gender specific association of missense variant rs1805097 of IRS-2 and noncoding variant rs841853 of GLUT-1 genes with susceptibility to type 2 diabetes in Bangladeshi population. GENE REPORTS 2020. [DOI: 10.1016/j.genrep.2020.100866] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Gorgisen G, Karatas U, Ates C, Oksuz M, Gulacar IM. Association of IRS1 Gly972Arg and IRS2 Gly1057Asp polymorphisms with gastric cancer in Turkish subjects. Oncol Lett 2020; 20:2016-2020. [PMID: 32724448 DOI: 10.3892/ol.2020.11717] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Accepted: 05/14/2020] [Indexed: 01/14/2023] Open
Abstract
Insulin receptor substrate (IRS) proteins are cytoplasmic adaptors that transmit the signal from the IR and insulin-like growth factor-1 receptor to effector proteins. Overexpression of IRS proteins has been indicated to be linked to cancer development. In addition to their expression profiles, studies have indicated that polymorphisms of IRS1 and IRS2 are also associated with the susceptibility to numerous cancer types. IRS1 Gly972Arg and IRS2 Gly1057Asp are the common variants of these genes. The present study aimed to determine the association of IRS1 Gly972Arg and IRS2 Gly1057Asp polymorphisms with gastric cancer development. The study included 100 patients with gastric cancer and 100 controls. Single-nucleotide polymorphisms were detected by real-time PCR using Taqman assays. The results suggested that in individuals with the IRS1 Gly/Arg genotype, the odds of having gastric cancer was increased by 7.891-fold (95% CI: 3.251-19.154, P<0.001) and in individuals with the IRS1 Arg/Arg genotype, it was increased by 22.716-fold (95% CI: 6.311-81.761, P<0.001) compared with those with the IRS1 Gly/Gly genotype. Although the IRS2 Gly1057Asp genotype analysis suggested that subjects with the Asp/Asp genotype had a 2,311-fold increased odds of having gastric cancer compared to those with the Gly/Gly genotype, the result was not statistically significant (95% CI: 0.800-6.678, P=0.122). The combined effects of the IRS1 and IRS2 variants on gastric cancer were also determined. The results suggested that individuals with Gly/Arg+Gly/Asp and Gly/Arg+Asp/Asp genotypes had a higher odds of having gastric cancer compared to individuals of the Gly/Gly+Gly/Gly genotype (P=0.001 and P=0.027, respectively). In conclusion, the present results suggested that the IRS1 Gly972Arg and IRS2 Gly1057Asp variations may be associated with an increased susceptibility to develop gastric cancer. Further studies with larger sample sizes are required to support the present results and to explore the use of these variations as a biomarker for gastric cancer.
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Affiliation(s)
- Gokhan Gorgisen
- Department of Medical Biology, Faculty of Medicine, Van Yuzuncu Yil University, Van 65080, Turkey
| | - Ugur Karatas
- Department of Medical Biology, Faculty of Medicine, Van Yuzuncu Yil University, Van 65080, Turkey
| | - Can Ates
- Department of Biostatistics, Faculty of Medicine, Van Yuzuncu Yil University, Van 65080, Turkey
| | - Murat Oksuz
- Department of Gastroenterology, Private Adana Ortadogu Hospital, Adana 67055, Turkey
| | - Ismail Musab Gulacar
- Department of Medical Biology, Faculty of Medicine, Van Yuzuncu Yil University, Van 65080, Turkey
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Mazzoccoli G, Dagostino MP, Paroni G, Seripa D, Ciccone F, Addante F, Favuzzi G, Grandone E, Avola R, Mazza T, Fusilli C, Greco A, De Cosmo S. Analysis of MTNR1B gene polymorphisms in relationship with IRS2 gene variants, epicardial fat thickness, glucose homeostasis and cognitive performance in the elderly. Chronobiol Int 2017; 34:1083-1093. [PMID: 28708046 DOI: 10.1080/07420528.2017.1340894] [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: 10/19/2022]
Abstract
ABSTARCT Genome-wide association studies pinpointed common variants in or near the MTNR1B gene encoding MT2 melatonin receptor to be strongly associated with fasting glucose levels. IRS2 gene polymorphisms impact insulin resistance and epicardial fat (EF) thickness, which in turn is correlated with visceral adiposity, cognitive ability and risk for metabolic plus cardiovascular disease. We aimed to discover the interactions between MTNR1B and IRS2 gene polymorphisms, insulin sensitivity, EF thickness and cognitive performance in the elderly. In 60 subjects aged 60 years and older, we evaluated five single nucleotide polymorphisms (SNPs) within the MTNR1B locus (rs10830962, rs4753426, rs12804291, rs10830963, rs3781638), the Gly1057Asp variant of IRS2 gene (rs1805097), biochemical parameters, cognitive performance by the Mini Mental State Examination (MMSE) and EF thickness by transthoracic echocardiography. We found that MTNR1B and IRS2 gene variants impacted EF thickness, lipid profile and glucose homeostasis. IRS2 but not MTNR1B variants impacted MMSE scores. In conclusion, MTNR1B SNPs interact with IRS2 gene variant, correlate with the amount of epicardial adipose tissue and impact glucose homeostasis and lipid profile influencing cardiometabolic risk.
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Affiliation(s)
- Gianluigi Mazzoccoli
- a Department of Medical Sciences , Division of Internal Medicine and Chronobiology Unit
| | - Mariangela Pia Dagostino
- b Department of Medical Sciences , Geriatrics Unit and Gerontology-Geriatrics Research Laboratory, IRCCS Scientific Institute and Regional General Hospital "Casa Sollievo della Sofferenza" , San Giovanni Rotondo , Italy
| | - Giulia Paroni
- b Department of Medical Sciences , Geriatrics Unit and Gerontology-Geriatrics Research Laboratory, IRCCS Scientific Institute and Regional General Hospital "Casa Sollievo della Sofferenza" , San Giovanni Rotondo , Italy
| | - Davide Seripa
- b Department of Medical Sciences , Geriatrics Unit and Gerontology-Geriatrics Research Laboratory, IRCCS Scientific Institute and Regional General Hospital "Casa Sollievo della Sofferenza" , San Giovanni Rotondo , Italy
| | - Filomena Ciccone
- b Department of Medical Sciences , Geriatrics Unit and Gerontology-Geriatrics Research Laboratory, IRCCS Scientific Institute and Regional General Hospital "Casa Sollievo della Sofferenza" , San Giovanni Rotondo , Italy
| | - Filomena Addante
- b Department of Medical Sciences , Geriatrics Unit and Gerontology-Geriatrics Research Laboratory, IRCCS Scientific Institute and Regional General Hospital "Casa Sollievo della Sofferenza" , San Giovanni Rotondo , Italy
| | - Giovanni Favuzzi
- c Research Laboratory of Thrombosis and Hemostasis, IRCCS Scientific Institute and Regional General Hospital "Casa Sollievo della Sofferenza", Opera di Padre Pio da Pietrelcina , San Giovanni Rotondo , Italy
| | - Elvira Grandone
- c Research Laboratory of Thrombosis and Hemostasis, IRCCS Scientific Institute and Regional General Hospital "Casa Sollievo della Sofferenza", Opera di Padre Pio da Pietrelcina , San Giovanni Rotondo , Italy
| | - Roberto Avola
- d Department of Biomedical and Biotechnological Sciences , University of Catania , Catania , Italy
| | - Tommaso Mazza
- e Bioinformatics Unit, IRCCS Scientific Institute and Regional General Hospital "Casa Sollievo della Sofferenza", Opera di Padre Pio da Pietrelcina , San Giovanni Rotondo , Italy
| | - Caterina Fusilli
- e Bioinformatics Unit, IRCCS Scientific Institute and Regional General Hospital "Casa Sollievo della Sofferenza", Opera di Padre Pio da Pietrelcina , San Giovanni Rotondo , Italy
| | - Antonio Greco
- b Department of Medical Sciences , Geriatrics Unit and Gerontology-Geriatrics Research Laboratory, IRCCS Scientific Institute and Regional General Hospital "Casa Sollievo della Sofferenza" , San Giovanni Rotondo , Italy
| | - Salvatore De Cosmo
- a Department of Medical Sciences , Division of Internal Medicine and Chronobiology Unit
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Villegas R, Delahanty R, Williams S, Li H, O'Brian R, Shi J, Cai Q, Xiang YB, Shu XO. Genetic Variation and Insulin Resistance in Middle-Aged Chinese Men. Ann Hum Genet 2015; 79:357-365. [PMID: 26252243 PMCID: PMC4949159 DOI: 10.1111/ahg.12124] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2014] [Accepted: 04/09/2015] [Indexed: 12/27/2022]
Abstract
We investigated the effect of variants in the first three genes in the insulin signaling pathway and genes identified from genome wide association studies (GWAS) of T2D quantitative traits with IR (fasting insulin and the homeostasis model assessment of IR, HOMA-IR) and evaluated gene-environment interactions with IR traits among 1879 nondiabetic middle-aged men from a population-based study conducted in Shanghai, China. One candidate gene, IGF1, was associated with fasting insulin and HOMA-IR. We observed four BMI-gene interactions (P < 0.05) with HOMA-IR (INRS rs7254060, INRS rs7254358, GLU4 rs2113050, and GLU4 rs7713127) and seven BMI-gene interactions with fasting insulin (INRS rs7254060, INRS rs7254358, INRS rs10417205, INRS rs1799817, GLU4 rs12054720 GLU4 rs2113050, and GLU4 rs7713127). There were four WHR-gene interactions with HOMA-IR (INRS rs10417205, INRS rs12971499, INRS rs7254060, and INRS rs7254358), five WHR-gene interactions with fasting insulin (INRS rs10417205, INRS rs7254060, INRS rs7254358, GLU4 rs2113050, and GLU4 rs7713127), eight physical activity-gene interactions with HOMA-IR (INRS rs10411676, INRS rs11671297, INRS rs2229431, INRS rs12461909, INRS rs6510950, INRS rs10420382, IRS2 rs913949, and IRS2 rs2241745) and five physical activity-gene interactions with fasting insulin (INRS rs2229431, INRS rs12461909, INRS rs10420382, IRS2 rs913949, and IRS2 rs2241745). Our results suggest that BMI, WHR and physical activity may modify IR-associated variants.
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Affiliation(s)
- Raquel Villegas
- Vanderbilt Epidemiology Center, Department of Medicine, Vanderbilt University Medical Center, TN, USA
| | - Ryan Delahanty
- Vanderbilt Epidemiology Center, Department of Medicine, Vanderbilt University Medical Center, TN, USA
| | - Scott Williams
- Geisel School of Medicine, Dartmouth College, Hanover, NH, USA
| | - Honglan Li
- Department of Epidemiology, Shanghai Cancer Institute, Shanghai, P.R. China
| | - Richard O'Brian
- Department of Molecular Physiology & Biophysics, Vanderbilt University School of Medicine, Nashville, TN, USA
| | - Jiajun Shi
- Vanderbilt Epidemiology Center, Department of Medicine, Vanderbilt University Medical Center, TN, USA
| | - Qiuyin Cai
- Vanderbilt Epidemiology Center, Department of Medicine, Vanderbilt University Medical Center, TN, USA
| | - Yong-Bing Xiang
- Department of Epidemiology, Shanghai Cancer Institute, Shanghai, P.R. China
| | - Xiao Ou Shu
- Vanderbilt Epidemiology Center, Department of Medicine, Vanderbilt University Medical Center, TN, USA
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Jiang F, Li S, Pan L, Jia C. Association of the G1057D polymorphism in insulin receptor substrate 2 gene with type 2 diabetes mellitus: a meta-analysis. J Diabetes Complications 2015; 29:731-6. [PMID: 25959789 DOI: 10.1016/j.jdiacomp.2015.04.017] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/29/2014] [Revised: 03/02/2015] [Accepted: 04/22/2015] [Indexed: 11/19/2022]
Abstract
OBJECTIVES The G1057D polymorphism in insulin receptor substrate (IRS)-2 gene is associated with type 2 diabetes mellitus (T2DM) risk, but results in published literatures are controversial. In addition, the effect of obesity as a modifier on this association is also inconsistent. Thus, this meta-analysis was performed to assess the above-mentioned association. METHODS A comprehensive search was performed to identify case-control or cohort studies (from 1990 to 2014) of the aforementioned association. The I(2) statistic was used to examine between-study heterogeneity. Fixed or random effect model was selected based on heterogeneity test among studies. Publication bias was estimated using modified Egger's regression test. RESULTS Nine articles with ten studies were included. After excluding studies deviated from Hardy-Weinberg equilibrium (HWE) in controls, results showed a significant association of D allele with reduced T2DM risk in dominant (OR = 0.825, 95% CI: 0.705-0.965) and codominant (OR = 0.857, 95% CI: 0.763-0.964) models, but no significant association in recessive (OR = 0.806, 95% CI: 0.628-1.035) model. For studies stratified by obesity, after excluding studies deviated from HWE in controls, no significant association of D allele with T2DM risk was found in three inherited models in obese group; however, a significant protective effect of D allele was observed in dominant (OR = 0.714, 95% CI: 0.533-0.958), recessive (OR = 0.438, 95% CI: 0.253-0.760) and codominant (OR = 0.706, 95% CI: 0.565-0.883) models in non-obese group. CONCLUSIONS This meta-analysis suggested that D allele of G1057D polymorphism have a significant effect on reduced risk of T2DM, and obesity is a modifier of this association. This result needs to be confirmed by further studies.
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Affiliation(s)
- Fan Jiang
- Department of Epidemiology and Biostatistics, Shandong University, P. R. China
| | - Suyun Li
- Department of Epidemiology and Biostatistics, Shandong University, P. R. China
| | - Lulu Pan
- Department of Epidemiology and Biostatistics, Shandong University, P. R. China
| | - Chongqi Jia
- Department of Epidemiology and Biostatistics, Shandong University, P. R. China.
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Oliveira JM, Rebuffat SA, Gasa R, Gomis R. Targeting type 2 diabetes: lessons from a knockout model of insulin receptor substrate 2. Can J Physiol Pharmacol 2014; 92:613-20. [DOI: 10.1139/cjpp-2014-0114] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Insulin receptor substrate 2 (IRS2) is a widely expressed protein that regulates crucial biological processes including glucose metabolism, protein synthesis, and cell survival. IRS2 is part of the insulin – insulin-like growth factor (IGF) signaling pathway and mediates the activation of the phosphotidylinositol 3-kinase (PI3K)–Akt and the Ras–mitogen-activated protein kinase (MAPK) cascades in insulin target tissues and in the pancreas. The best evidence of this is that systemic elimination of the Irs2 in mice (Irs2−/−) recapitulates the pathogenesis of type 2 diabetes (T2D), in that diabetes arises as a consequence of combined insulin resistance and beta-cell failure. Indeed, work using this knockout mouse has confirmed the importance of IRS2 in the control of glucose homeostasis and especially in the survival and function of pancreatic beta-cells. These studies have shown that IRS2 is critically required for beta-cell compensation in conditions of increased insulin demand. Importantly, islets isolated from T2D patients exhibit reduced IRS2 expression, which supports the likely contribution of altered IRS2-dependent signaling to beta-cell failure in human T2D. For all these reasons, the Irs2−/− mouse has been and will be essential for elucidating the inter-relationship between beta-cell function and insulin resistance, as well as to delineate therapeutic strategies to protect beta-cells during T2D progression.
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Affiliation(s)
- Joana Moitinho Oliveira
- Diabetes and Obesity Research Laboratory, Institut d’Investigations Biomediques August Pi i Sunyer, Centre Esther Koplowitz, C/Rosselló, 149-153 08036 Barcelona, Spain
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas, Barcelona, Spain
| | - Sandra A. Rebuffat
- Diabetes and Obesity Research Laboratory, Institut d’Investigations Biomediques August Pi i Sunyer, Centre Esther Koplowitz, C/Rosselló, 149-153 08036 Barcelona, Spain
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas, Barcelona, Spain
| | - Rosa Gasa
- Diabetes and Obesity Research Laboratory, Institut d’Investigations Biomediques August Pi i Sunyer, Centre Esther Koplowitz, C/Rosselló, 149-153 08036 Barcelona, Spain
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas, Barcelona, Spain
| | - Ramon Gomis
- Diabetes and Obesity Research Laboratory, Institut d’Investigations Biomediques August Pi i Sunyer, Centre Esther Koplowitz, C/Rosselló, 149-153 08036 Barcelona, Spain
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas, Barcelona, Spain
- University of Barcelona, Hospital Clínic, Barcelona, Spain
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Ayaz L, Karakaş Çelik S, Cayan F. The G1057D polymorphism of insulin receptor substrate-2 associated with gestational diabetes mellitus. Gynecol Endocrinol 2014; 30:165-8. [PMID: 24401133 DOI: 10.3109/09513590.2013.871516] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVE The Gly1057D polymorphism in the insulin receptor substrate-2 (IRS-2) gene has been reported to be associated with insulin resistance, obesity and type 2 diabetes; little is known about its possible association with gestational diabetes mellitus (GDM). To investigate this association we determined the distribution of its genotypes and frequency of alleles in GDM patients. MATERIALS AND METHODS The study population consisted of 94 subjects; among them were 44 patients with GDM and 50 healthy controls without diabetes. Genomic DNA was extracted from the leukocyte by high pure polymerase chain reaction (PCR) template preparation kit. Genetic polymorphism of IRS-2 G1057D was detected by using PCR-based restriction fragment-length polymorphism (RFLP). RESULTS For IRS-2 G1057D polymorphism, there was no significant difference in genotype distribution between GDM patients and controls. The risk for GDM was 2.97 times higher (95% CI: 0.89-9.93, p = 0.076) in the individuals with the IRS-2 DD genotype compared to the GG genotype. Also individuals with the IRS-2 D allele had a significantly higher risk of GDM compared with individuals with the IRS-2 G allele, with a relative risk of 1.86 (95% CI: 1.02-3.37, p = 0.042) for cases compared with population controls. CONCLUSION These results suggest that IRS-2 1057D allele may be associated with GDM.
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Affiliation(s)
- Lokman Ayaz
- Department of Biochemistry, Faculty of Pharmacy, Trakya University , Edirne , Turkey
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Hu Y, Zhou M, Zhang K, Kong X, Hu X, Li K, Liu L. Lack of association between insulin receptor substrate2 rs1805097 polymorphism and the risk of colorectal and breast cancer: a meta-analysis. PLoS One 2014; 9:e86911. [PMID: 24497996 PMCID: PMC3907441 DOI: 10.1371/journal.pone.0086911] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2013] [Accepted: 12/16/2013] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND Insulin receptor substrate-2 (IRS-2), a signaling adaptor protein, was involved in two cancer-related pathways (the phosphatidylinositol 3'-kinase (PI3K) and the extracellular signal-regulated kinase (ERK) pathways). Several studies have evaluated the association between IRS2 rs1805097 (G>A) polymorphisms and the risk of colorectal and breast cancer. However, the results were inconsistent. METHODOLOGY/PRINCIPAL FINDINGS A meta-analysis of seven published case-control studies (4 studies with 4798 cases and 5478 controls for colorectal cancer and 3 studies with 2108 cases and 2507 controls for breast cancer) were conducted to assess the strength of association using crude odd ratios (ORs) with 95% confidence intervals (CIs). For colorectal cancer, no obvious associations were found for all genetic models (homozygote comparison OR = 0.96, 95%CI 0.85-1.08, Pheterogeneity = 0.97; heterozygote comparison: OR = 0.91, 95%CI 0.73-1.13, Pheterogeneity<0.01; dominant model: OR = 0.92, 95%CI 0.80-1.06, Pheterogeneity = 0.05; recessive model: OR = 1.02, 95%CI 0.91-1.14, Pheterogeneity = 0.60). In the subgroup analysis by ethnicity, control source and consistency of frequency with Hardy-Weinberg equilibrium (HWE), still no significant associations were observed. For breast cancer, also no obvious associations were found for all genetic models (homozygote comparison: OR = 0.95, 95%CI 0.71-1.26, Pheterogeneity = 0.10; heterozygote comparison: OR = 1.00, 95%CI 0.89-1.14, Pheterogeneity = 0.71; dominant model: OR = 0.98, 95%CI 0.87-1.10, Pheterogeneity = 0.55; recessive model: OR = 0.95, 95%CI 0.72-1.25, Pheterogeneity = 0.07). We performed subgroup analyses by sample size and did not find an association. CONCLUSIONS This meta-analysis indicated that IRS2 rs1805097 polymorphism was not associated with colorectal and breast cancer risk.
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Affiliation(s)
- Yue Hu
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Min Zhou
- Department of Radiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Kai Zhang
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xiangquan Kong
- Department of Radiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xiaoyan Hu
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Kang Li
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Li Liu
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Hookham MB, O'Donovan HC, Church RH, Mercier-Zuber A, Luzi L, Curran SP, Carew RM, Droguett A, Mezzano S, Schubert M, White MF, Crean JK, Brazil DP. Insulin receptor substrate-2 is expressed in kidney epithelium and up-regulated in diabetic nephropathy. FEBS J 2013; 280:3232-43. [PMID: 23617393 DOI: 10.1111/febs.12305] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2012] [Revised: 03/29/2013] [Accepted: 04/18/2013] [Indexed: 02/06/2023]
Abstract
Diabetic nephropathy (DN) is a progressive fibrotic condition that may lead to end-stage renal disease and kidney failure. Transforming growth factor-β1 and bone morphogenetic protein-7 (BMP7) have been shown to induce DN-like changes in the kidney and protect the kidney from such changes, respectively. Recent data identified insulin action at the level of the nephron as a crucial factor in the development and progression of DN. Insulin requires a family of insulin receptor substrate (IRS) proteins for its physiological effects, and many reports have highlighted the role of insulin and IRS proteins in kidney physiology and disease. Here, we observed IRS2 expression predominantly in the developing and adult kidney epithelium in mouse and human. BMP7 treatment of human kidney proximal tubule epithelial cells (HK-2 cells) increases IRS2 transcription. In addition, BMP7 treatment of HK-2 cells induces an electrophoretic shift in IRS2 migration on SDS/PAGE, and increased association with phosphatidylinositol-3-kinase, probably due to increased tyrosine/serine phosphorylation. In a cohort of DN patients with a range of chronic kidney disease severity, IRS2 mRNA levels were elevated approximately ninefold, with the majority of IRS2 staining evident in the kidney tubules in DN patients. These data show that IRS2 is expressed in the kidney epithelium and may play a role in the downstream protective events triggered by BMP7 in the kidney. The specific up-regulation of IRS2 in the kidney tubules of DN patients also indicates a novel role for IRS2 as a marker and/or mediator of human DN progression.
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Mazzoccoli G, Dagostino MP, Fontana A, Grandone E, Favuzzi G, Tiscia G, Margaglione M, de Matthaeis A, Greco A, Vendemiale G. Influence of the Gly1057Asp variant of the insulin receptor substrate 2 (IRS2) on insulin resistance and relationship with epicardial fat thickness in the elderly. Exp Gerontol 2012; 47:988-93. [DOI: 10.1016/j.exger.2012.09.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2012] [Revised: 08/29/2012] [Accepted: 09/17/2012] [Indexed: 10/27/2022]
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Haghani K, Bakhtiyari S. The Study on the Relationship Between IRS-1 Gly972Arg and IRS-2 Gly1057Asp Polymorphisms and Type 2 Diabetes in the Kurdish Ethnic Group in West Iran. Genet Test Mol Biomarkers 2012; 16:1270-6. [DOI: 10.1089/gtmb.2012.0160] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Affiliation(s)
- Karimeh Haghani
- Department of Clinical Biochemistry, Faculty of Medicine, Ilam University of Medical Sciences, Ilam, Islamic Republic of Iran
| | - Salar Bakhtiyari
- Department of Clinical Biochemistry, Faculty of Medicine, Ilam University of Medical Sciences, Ilam, Islamic Republic of Iran
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Baroudi Ouederni T, Sanchez-Corona J, Martinez SEF, Ben Maiz H, Aounallah Skhiri H, Kammoun Abid H, Benammar-Elgaaied A. The G1057D polymorphism of IRS-2 gene is not associated with type 2 diabetes and obese patients among ethnic groups in Tunisian population. Clin Biochem 2009; 42:1169-73. [DOI: 10.1016/j.clinbiochem.2009.03.018] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2008] [Revised: 02/18/2009] [Accepted: 03/23/2009] [Indexed: 10/21/2022]
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Bottomley WE, Soos MA, Adams C, Guran T, Howlett TA, Mackie A, Miell J, Monson JP, Temple R, Tenenbaum-Rakover Y, Tymms J, Savage DB, Semple RK, O'Rahilly S, Barroso I. IRS2 variants and syndromes of severe insulin resistance. Diabetologia 2009; 52:1208-11. [PMID: 19377890 PMCID: PMC2680062 DOI: 10.1007/s00125-009-1345-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/19/2008] [Accepted: 02/16/2009] [Indexed: 10/20/2022]
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Abstract
The tumor suppressor PTEN was originally identified as a negative regulator of the phosphoinositide 3-kinase (PI3K) signaling, a main regulator of cell growth, metabolism and survival. Yet this function of PTEN is extremely relevant for its tumor-suppressive ability, albeit the recent characterization of many PI3K-independent tumor-suppressive activities. PI3K-mediated PIP(3) production leads to the activation of the canonical AKT-mTORC1 pathway. The implications of this signaling cascade in health and disease have been underscored by the high number of regulators within the pathway whose alterations give rise to different malignancies, including familiar syndromes, metabolic dysfunctions and cancer. Moreover, PI3K is tightly buffered at multiple levels by downstream components, which have turned this signaling pathway literally upside down. PI3K and its downstream components in turn cross-talk with a number of other pathways, thereby leading to a complex network of signals that may have dramatic consequences when perturbed. Here, we review the current status of the PTEN-PI3K signaling pathway with special emphasis on the most recent data on targets and regulation of the PTEN-PI3K axis. This provides novel provocative therapeutic implications based on the targeted modulation of PI3K-cross-talking signals.
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Affiliation(s)
- A Carracedo
- Cancer Genetics Program, Beth Israel Deaconess Cancer Center, Department of Medicine and Pathology, Harvard Medical School, Boston, MA 02215, USA
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16
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Management of Cholesterol Disorders. CARDIOVASCULAR MEDICINE 2007. [DOI: 10.1007/978-1-84628-715-2_131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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Wagner K, Hemminki K, Försti A. The GH1/IGF-1 axis polymorphisms and their impact on breast cancer development. Breast Cancer Res Treat 2006; 104:233-48. [PMID: 17082888 DOI: 10.1007/s10549-006-9411-9] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2006] [Accepted: 09/17/2006] [Indexed: 10/24/2022]
Abstract
The growth hormone 1/insulin-like growth factor-1 (GH1/IGF-1) axis plays an essential role in the development of the breast by regulating cell proliferation, differentiation and apoptosis. Imbalances within this axis lead to an aberrant signalling and recent research has focussed on the overexpression of these growth factors and their involvement in breast cancer development. The increased understanding of the molecular mechanisms and signalling pathways connected to the GH1/IGF-1 axis has provided important insights into aetiology, prevention and therapy for breast cancer. However, to identify the contribution of the GH1/IGF-1 signalling pathway to cancer risk still remains a challenge since the results of various studies are controversial. Here, we discuss the influence of low-penetrance polymorphisms in the genes along the GH1/IGF-1 axis and their impact on hormone levels and cancer risk, especially breast cancer. We point out what is known about the effects of the variants and show how the interaction of genetic variants affects breast cancer risk.
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Affiliation(s)
- Kerstin Wagner
- Division of Molecular Genetic Epidemiology C050, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 580, 69120, Heidelberg, Germany.
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Bodhini D, Radha V, Deepa R, Ghosh S, Majumder PP, Rao MRS, Mohan V. The G1057D polymorphism of IRS-2 gene and its relationship with obesity in conferring susceptibility to type 2 diabetes in Asian Indians. Int J Obes (Lond) 2006; 31:97-102. [PMID: 16652127 DOI: 10.1038/sj.ijo.0803356] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
OBJECTIVE To investigate the association of insulin receptor substrate-2 (IRS-2) G1057D polymorphism with type 2 diabetes and obesity in Asian Indians. METHODS The study comprised of 1193 normal glucose tolerant (NGT) subjects and 1018 subjects with type 2 diabetes, aged >/=20 years with an average body mass index of 23.7+/-4.6 and 25.3+/-4.2 kg/m(2), respectively. The subjects were unrelated and randomly selected from the Chennai Urban Rural Epidemiology Study (CURES), a population-based study in Chennai in southern India. The G1057D polymorphism of the IRS-2 gene was genotyped using PCR-RFLP assay. RESULTS The genotype frequency of the IRS-2 G1057D polymorphism was significantly different between the NGT and type 2 diabetic groups (P=0.0007) in the total study subjects and among the obese subjects (P=0.00007). Logistic regression analysis showed that the DD genotype showed an increased susceptibility to diabetes with an odds ratio (adjusted for age and sex) of 2.19 (95% CI: 1.34-3.57, P=0.002) when compared to the GG+GD genotype, among the obese subjects, but not in non obese subjects. In order to explore possible interaction with obesity, logistic regression analysis was performed and the coefficient corresponding to the interaction parameter (genotype x obesity) was significant (P=0.0001). CONCLUSION In Asian Indians, the DD genotype increases susceptibility to type 2 diabetes by interacting with obesity.
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Affiliation(s)
- D Bodhini
- Madras Diabetes Research Foundation and Dr Mohan's Diabetes Specialities Centre, Gopalapuram, Chennai, India
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19
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Thirone ACP, Huang C, Klip A. Tissue-specific roles of IRS proteins in insulin signaling and glucose transport. Trends Endocrinol Metab 2006; 17:72-8. [PMID: 16458527 DOI: 10.1016/j.tem.2006.01.005] [Citation(s) in RCA: 164] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2005] [Revised: 11/08/2005] [Accepted: 01/19/2006] [Indexed: 02/06/2023]
Abstract
In type 2-diabetes and impaired glucose tolerance, the muscle, fat and liver become resistant to insulin, and recent developments place dysregulation of insulin receptor substrate (IRS) expression and activation at the center of such defects. IRS1 and IRS2 are the major insulin receptor substrates leading to glucose homeostasis, and have distinct and overlapping roles in diverse organs. The majority of the published literature in this field suggests that IRS1 is the major substrate leading to stimulation of glucose transport in muscle and adipose tissues, whereas in liver, IRS1 and IRS2 have complementary roles in insulin signaling and metabolism.
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Affiliation(s)
- Ana C P Thirone
- Programme in Cell Biology, The Hospital for Sick Children, Toronto, Ontario M5G 1X8, Canada
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20
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Abstract
Type 2 diabetes (T2D) has become a health-care problem worldwide, with the rise in disease prevalence being all the more worrying as it not only affects the developed world but also developing nations with fewer resources to cope with yet another major disease burden. Furthermore, the problem is no longer restricted to the ageing population, as young adults and children are also being diagnosed with T2D. In recent years, there has been a surge in the number of genetic studies of T2D in attempts to identify some of the underlying risk factors. In this review, I highlight the main genes known to cause uncommon monogenic forms of diabetes (e.g. maturity-onset diabetes of the young--MODY--and insulin resistance syndromes), as well as describe some of the main approaches used to identify genes involved in the more common forms of T2D that result from the interaction between environmental risk factors and predisposing genotypes. Linkage and candidate gene studies have been highly successful in the identification of genes that cause the monogenic variants of diabetes and, although progress in the more common forms of T2D has been slow, a number of genes have now been reproducibly associated with T2D risk in multiple studies. These are discussed, as well as the main implications that the diabetes gene discoveries will have in diabetes treatment and prevention.
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Affiliation(s)
- I Barroso
- Metabolic Disease Group, The Wellcome Trust Sanger Institute, Cambridge, UK.
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21
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Grundy SM. What is the contribution of obesity to the metabolic syndrome? Endocrinol Metab Clin North Am 2004; 33:267-82, table of contents. [PMID: 15158519 DOI: 10.1016/j.ecl.2004.03.001] [Citation(s) in RCA: 58] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Many prospective studies show that obesity is accompanied by increased risk for cardiovascular disease. Obesity affects metabolism of lipids and glucose, regulation of blood pressure, thrombotic and fibrinolytic processes, and inflammatory reactions. Multiple aberrations exist in each of these systems; obesity acting alone probably is not sufficient to produce full-blown metabolic syndrome. There must be other factors, including genetic and aging factors. It is difficult to sort out all pathogenic factors that link obesity to cardiovascular disease risk. It is worthwhile to investigate individually the components of the obesity-induced metabolic syndrome for their atherogenic potential, because out of that investigation likely will come new targets for clinical or public health intervention to reduce the risk for cardiovascular disease.
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Affiliation(s)
- Scott M Grundy
- Center for Human Nutrition, Department of Clinical Nutrition, University of Texas Southwestern Medical Center at Dallas, 5323 Harry Hines Boulevard, Dallas, TX 75390-9052, USA.
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22
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Abstract
PURPOSE OF REVIEW Both insulin resistance and dyslipidaemia are determined by genetic and environmental factors. Depending on their expression and their function, gene variants (mutations, polymorphisms) can primarily regulate either insulin action or dyslipidaemia. The purpose of this review is to give some examples from recent studies on gene variants regulating primarily insulin signalling or lipoprotein metabolism. RECENT FINDINGS Common polymorphisms in the PC-1, insulin receptor substrate 1 and 2, and PPAR-gamma 2 genes have been linked to insulin resistance and dyslipidaemia, although the results have not been consistent. However, the Pro12Pro genotype of the PPAR-gamma 2 gene has been consistently associated with insulin resistance and the risk of type 2 diabetes. Promoter polymorphisms in the hepatic lipase gene, the 54Thr allele of the fatty acid binding protein 2 gene, and genes regulating LDL particle size have been associated with lipid metabolism, but on the other hand their association with insulin resistance is not consistent. SUMMARY Although results have not always been consistent, gene variants affecting primary insulin action or dyslipidaemia, and particularly their interaction with the environment, are important modulators of glucose and lipoprotein metabolism.
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Affiliation(s)
- Markku Laakso
- Department of Medicine, University of Kuopio, Kuopio, Finland.
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