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Rochmah N, Faizi M, Nova S, Setyoningrum RA, Basuki S, Endaryanto A. CTLA-4 CT-60 A/G and CTLA-4 1822 C/T Gene Polymorphisms in Indonesians with Type 1 Diabetes Mellitus. Appl Clin Genet 2022; 15:19-25. [PMID: 35515014 PMCID: PMC9064071 DOI: 10.2147/tacg.s359158] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Accepted: 04/13/2022] [Indexed: 11/23/2022] Open
Abstract
Introduction CTLA-4 gene polymorphism plays an important role in children with type 1 diabetes mellitus (T1DM). However, data on this subject vary among different races and ethnics. Purpose To analyze CTLA-4 CT-60 A/G and CTLA-4 1822 C/T gene polymorphism among children with T1DM compared to control. Patients and Methods The CTLA-4 CT-60 A/G and CTLA-4 1822 C/T gene polymorphism in children with T1DM using polymerase chain reaction-restriction fragment length polymorphism in 25 T1DM and 25 controls. The inclusion criteria were patients regularly controlled at the Pediatric Endocrine Outpatient Clinic of Dr. Soetomo Hospital, aged 4-18 years and willing to join this study and the exclusion criteria were T1DM patients hospitalized in the pediatric intensive care unit. In the control group, the inclusion criteria were healthy children, aged 4-18 years and willing to join this study. The exclusion criteria included children with ongoing infection, history of other autoimmune diseases, allergies, or malignancy. Results The mean age was 12.48 years old, and the mean of T1DM onset was 9.28 years old. The CTLA-4 1822 T allele observed in 62% T1DM and 56% in control (p = 0.388, OR = 0.78, 95% CI = 0.44-1.37) and CTLA-4 CT-60 G allele observed in 52% T1DM and 58% in control (p = 0.393, OR = 1.27, 95% CI = 0.73-2.22). The C/T genotypes was significantly higher in control group (p = 0.045, OR = 3.27, 95% CI = 1.00-10.62). The A/G genotypes was commonly found in control group (p = 0.765, OR = 1.20, 95% CI = 0.37-3.86). The Javanese was the dominant ethnic group in our study. Conclusion The frequency of CTLA-4 CT-60 A/G polymorphism almost equivalent in T1DM and control group. However, CTLA-4 1822 C/T polymorphism was more prevalent in the control group; thus, this genotype may have a protective effect against T1DM.
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Affiliation(s)
- Nur Rochmah
- Faculty of Medicine, Department of Child Health, Dr. Soetomo General Hospital, Universitas Airlangga, Surabaya, East Java, Indonesia
| | - Muhammad Faizi
- Faculty of Medicine, Department of Child Health, Dr. Soetomo General Hospital, Universitas Airlangga, Surabaya, East Java, Indonesia
| | - Suhasta Nova
- Faculty of Medicine, Department of Child Health, Dr. Soetomo General Hospital, Universitas Airlangga, Surabaya, East Java, Indonesia
| | - Retno Asih Setyoningrum
- Faculty of Medicine, Department of Child Health, Dr. Soetomo General Hospital, Universitas Airlangga, Surabaya, East Java, Indonesia
| | - Sukmawati Basuki
- Institute of Tropical Disease, Universitas Airlangga, Surabaya, East Java, Indonesia
| | - Anang Endaryanto
- Faculty of Medicine, Department of Child Health, Dr. Soetomo General Hospital, Universitas Airlangga, Surabaya, East Java, Indonesia
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Ma J, Hu W, Zhang D, Xie J, Duan C, Liu Y, Wang Y, Xu X, Cheng K, Jin B, Zhang Y, Zhuang R. CD226 knockout alleviates high-fat diet induced obesity by suppressing proinflammatory macrophage phenotype. J Transl Med 2021; 19:477. [PMID: 34823548 PMCID: PMC8620575 DOI: 10.1186/s12967-021-03150-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Accepted: 11/17/2021] [Indexed: 12/30/2022] Open
Abstract
Obesity is associated with chronic low-grade inflammation, contributing to an increasing prevalence of chronic metabolic diseases, such as insulin resistance, non-alcoholic fatty liver disease (NALFD), and steatohepatitis. Macrophages are the predominant immune cells in adipose tissues. Adipose tissue macrophages (ATMs) would switch to pro-inflammatory M1 state during obesity, causing local and systemic inflammation. However, the regulatory mechanism of ATMs has not yet been well described within this process. Using a high-fat diet (HFD)–induced mouse obesity model, we found that the costimulatory molecule CD226 was highly expressed on ATMs and knockout (KO) of CD226 alleviated obesity caused by HFD. Loss of CD226 reduced the accumulation of ATMs and hindered macrophage M1 polarization, with lower serum proinflammatory cytokine levels. Furthermore, deficiency of CD226 on ATMs decreased the phosphorylation levels of VAV1, AKT, and FOXO1 and thereby upregulated PPAR-γ. Further administration of PPAR-γ inhibitor restored M1 phenotype in CD226KO ATMs. In summary, loss of CD226 alleviates the HFD-induced obesity and systemic inflammation through inhibition of the accumulation and M1 polarization of ATMs in which PPAR-γ-dependent signaling pathway is involved, suggesting that CD226 may be identified as a potential molecular target for the clinical treatment of obesity.
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Affiliation(s)
- Jingchang Ma
- Department of Immunology, Fourth Military Medical University, 169 West Changle Road, Xi'an, 710032, Shaanxi, China
| | - Wei Hu
- Department of Immunology, Fourth Military Medical University, 169 West Changle Road, Xi'an, 710032, Shaanxi, China
| | - Dongliang Zhang
- Department of Immunology, Fourth Military Medical University, 169 West Changle Road, Xi'an, 710032, Shaanxi, China
| | - Jiangang Xie
- Department of Immunology, Fourth Military Medical University, 169 West Changle Road, Xi'an, 710032, Shaanxi, China
| | - Chujun Duan
- Department of Immunology, Fourth Military Medical University, 169 West Changle Road, Xi'an, 710032, Shaanxi, China
| | - Yitian Liu
- Department of Immunology, Fourth Military Medical University, 169 West Changle Road, Xi'an, 710032, Shaanxi, China
| | - Yuling Wang
- Department of Immunology, Fourth Military Medical University, 169 West Changle Road, Xi'an, 710032, Shaanxi, China
| | - Xuexue Xu
- Institute of Medical Research, Northwestern Polytechnical University, 127 West Youyi Road, Xi'an, 710072, Shaanxi, China
| | - Kun Cheng
- Department of Immunology, Fourth Military Medical University, 169 West Changle Road, Xi'an, 710032, Shaanxi, China
| | - Boquan Jin
- Department of Immunology, Fourth Military Medical University, 169 West Changle Road, Xi'an, 710032, Shaanxi, China
| | - Yuan Zhang
- Institute of Medical Research, Northwestern Polytechnical University, 127 West Youyi Road, Xi'an, 710072, Shaanxi, China.
| | - Ran Zhuang
- Department of Immunology, Fourth Military Medical University, 169 West Changle Road, Xi'an, 710032, Shaanxi, China. .,Institute of Medical Research, Northwestern Polytechnical University, 127 West Youyi Road, Xi'an, 710072, Shaanxi, China.
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Toren E, Burnette KS, Banerjee RR, Hunter CS, Tse HM. Partners in Crime: Beta-Cells and Autoimmune Responses Complicit in Type 1 Diabetes Pathogenesis. Front Immunol 2021; 12:756548. [PMID: 34691077 PMCID: PMC8529969 DOI: 10.3389/fimmu.2021.756548] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Accepted: 09/13/2021] [Indexed: 12/11/2022] Open
Abstract
Type 1 diabetes (T1D) is an autoimmune disease characterized by autoreactive T cell-mediated destruction of insulin-producing pancreatic beta-cells. Loss of beta-cells leads to insulin insufficiency and hyperglycemia, with patients eventually requiring lifelong insulin therapy to maintain normal glycemic control. Since T1D has been historically defined as a disease of immune system dysregulation, there has been little focus on the state and response of beta-cells and how they may also contribute to their own demise. Major hurdles to identifying a cure for T1D include a limited understanding of disease etiology and how functional and transcriptional beta-cell heterogeneity may be involved in disease progression. Recent studies indicate that the beta-cell response is not simply a passive aspect of T1D pathogenesis, but rather an interplay between the beta-cell and the immune system actively contributing to disease. Here, we comprehensively review the current literature describing beta-cell vulnerability, heterogeneity, and contributions to pathophysiology of T1D, how these responses are influenced by autoimmunity, and describe pathways that can potentially be exploited to delay T1D.
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Affiliation(s)
- Eliana Toren
- Department of Medicine, Division of Endocrinology Diabetes and Metabolism, University of Alabama at Birmingham, Birmingham, AL, United States
- Comprehensive Diabetes Center, University of Alabama at Birmingham, Birmingham, AL, United States
| | - KaLia S. Burnette
- Comprehensive Diabetes Center, University of Alabama at Birmingham, Birmingham, AL, United States
- Department of Microbiology, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Ronadip R. Banerjee
- Division of Endocrinology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Chad S. Hunter
- Department of Medicine, Division of Endocrinology Diabetes and Metabolism, University of Alabama at Birmingham, Birmingham, AL, United States
- Comprehensive Diabetes Center, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Hubert M. Tse
- Comprehensive Diabetes Center, University of Alabama at Birmingham, Birmingham, AL, United States
- Department of Microbiology, University of Alabama at Birmingham, Birmingham, AL, United States
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Fichna M, Żurawek M, Słomiński B, Sumińska M, Czarnywojtek A, Rozwadowska N, Fichna P, Myśliwiec M, Ruchała M. Polymorphism in BACH2 gene is a marker of polyglandular autoimmunity. Endocrine 2021; 74:72-79. [PMID: 33966174 PMCID: PMC8440266 DOI: 10.1007/s12020-021-02743-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Accepted: 04/23/2021] [Indexed: 11/06/2022]
Abstract
PURPOSE Genetically predisposed individuals may develop several autoimmune diseases-autoimmune polyendocrine syndromes (APS). APS types 2-4, are complex disorders, which combine various organ-specific autoimmune conditions. Recent reports support the considerable role of the BACH2 gene in immune cell differentiation and shifting the T-cell balance towards regulatory T-cells. BACH2 polymorphisms are associated with autoimmune disorders, including Addison's disease (AD), Graves' disease (GD), and probably type 1 diabetes (T1D). Our study was aimed to investigate the BACH2 variant, rs3757247, in endocrine autoimmunity in the Polish population. METHODS The analysis comprised 346 individuals with APS, 387 with T1D only, and 568 controls. Genotyping was performed using TaqMan chemistry. RESULTS APS type 2 was found in 219 individuals, type 3 in 102, and type 4 in 25 subjects. Overall, AD was diagnosed in 244 subjects, Hashimoto's thyroiditis-in 238, T1D-in 127, GD-in 58, vitiligo and chronic gastritis each in 40 patients, celiac disease-in 28, premature menopause in 18, and alopecia in 4 patients. Minor T allele at rs3757247 was found in 56.4% APS vs. 44.1% control alleles (OR 1.59; 95%CI: 1.30-1.95, p < 0.0001). The distribution of genotypes revealed excess TT homozygotes in the APS cohort (33.2 vs. 20.1% in controls, p < 0.0001). The frequencies of rs3757247 alleles and genotypes in T1D patients did not present significant differences vs. controls (p-values > 0.05). CONCLUSIONS These results provide evidence of the association between BACH2 polymorphism and polyglandular autoimmunity. Since carriers of rs3757247 display increased risk for additional autoimmune conditions, this variant could identify individuals prone to develop APS.
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Affiliation(s)
- Marta Fichna
- Department of Endocrinology, Metabolism and Internal Medicine, Poznan University of Medical Sciences, Poznan, Poland.
| | - Magdalena Żurawek
- Institute of Human Genetics, Polish Academy of Sciences, Poznan, Poland
| | - Bartosz Słomiński
- Department of Medical Immunology, Faculty of Medicine, Medical University of Gdansk, Gdansk, Poland
| | - Marta Sumińska
- Department of Paediatric Diabetes and Obesity, Poznan University of Medical Sciences, Poznan, Poland
| | - Agata Czarnywojtek
- Department of Pharmacology, Poznan University of Medical Sciences, Poznan, Poland
| | | | - Piotr Fichna
- Department of Paediatric Diabetes and Obesity, Poznan University of Medical Sciences, Poznan, Poland
| | - Małgorzata Myśliwiec
- Department of Paediatrics, Diabetology and Endocrinology, Faculty of Medicine, Medical University of Gdansk, Gdansk, Poland
| | - Marek Ruchała
- Department of Endocrinology, Metabolism and Internal Medicine, Poznan University of Medical Sciences, Poznan, Poland
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5
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Sharp RC, Brown ME, Shapiro MR, Posgai AL, Brusko TM. The Immunoregulatory Role of the Signal Regulatory Protein Family and CD47 Signaling Pathway in Type 1 Diabetes. Front Immunol 2021; 12:739048. [PMID: 34603322 PMCID: PMC8481641 DOI: 10.3389/fimmu.2021.739048] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Accepted: 08/31/2021] [Indexed: 12/11/2022] Open
Abstract
Background The pathogenesis of type 1 diabetes (T1D) involves complex genetic susceptibility that impacts pathways regulating host immunity and the target of autoimmune attack, insulin-producing pancreatic β-cells. Interactions between risk variants and environmental factors result in significant heterogeneity in clinical presentation among those who develop T1D. Although genetic risk is dominated by the human leukocyte antigen (HLA) class II and insulin (INS) gene loci, nearly 150 additional risk variants are significantly associated with the disease, including polymorphisms in immune checkpoint molecules, such as SIRPG. Scope of Review In this review, we summarize the literature related to the T1D-associated risk variants in SIRPG, which include a protein-coding variant (rs6043409, G>A; A263V) and an intronic polymorphism (rs2281808, C>T), and their potential impacts on the immunoregulatory signal regulatory protein (SIRP) family:CD47 signaling axis. We discuss how dysregulated expression or function of SIRPs and CD47 in antigen-presenting cells (APCs), T cells, natural killer (NK) cells, and pancreatic β-cells could potentially promote T1D development. Major Conclusions We propose a hypothesis, supported by emerging genetic and functional immune studies, which states a loss of proper SIRP:CD47 signaling may result in increased lymphocyte activation and cytotoxicity and enhanced β-cell destruction. Thus, we present several novel therapeutic strategies for modulation of SIRPs and CD47 to intervene in T1D.
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MESH Headings
- Animals
- Antigen-Presenting Cells/immunology
- Antigen-Presenting Cells/metabolism
- Antigens, Differentiation/genetics
- Antigens, Differentiation/metabolism
- CD47 Antigen/metabolism
- Diabetes Mellitus, Type 1/genetics
- Diabetes Mellitus, Type 1/immunology
- Diabetes Mellitus, Type 1/metabolism
- Diabetes Mellitus, Type 1/therapy
- Genetic Association Studies
- Humans
- Immunotherapy
- Insulin-Secreting Cells/immunology
- Insulin-Secreting Cells/metabolism
- Killer Cells, Natural/immunology
- Killer Cells, Natural/metabolism
- Polymorphism, Genetic
- Receptors, Cell Surface/metabolism
- Receptors, Immunologic/genetics
- Receptors, Immunologic/metabolism
- Signal Transduction
- T-Lymphocytes/immunology
- T-Lymphocytes/metabolism
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Affiliation(s)
- Robert C. Sharp
- Department of Pathology, Immunology, and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, FL, United States
| | - Matthew E. Brown
- Department of Pathology, Immunology, and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, FL, United States
| | - Melanie R. Shapiro
- Department of Pathology, Immunology, and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, FL, United States
| | - Amanda L. Posgai
- Department of Pathology, Immunology, and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, FL, United States
| | - Todd M. Brusko
- Department of Pathology, Immunology, and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, FL, United States
- Department of Pediatrics, College of Medicine, Diabetes Institute, University of Florida, Gainesville, FL, United States
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6
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Polymorphisms in GLIS3 and susceptibility to diabetes mellitus: A systematic review and meta-analysis. Meta Gene 2021. [DOI: 10.1016/j.mgene.2021.100898] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
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Scoville DW, Kang HS, Jetten AM. Transcription factor GLIS3: Critical roles in thyroid hormone biosynthesis, hypothyroidism, pancreatic beta cells and diabetes. Pharmacol Ther 2020; 215:107632. [PMID: 32693112 PMCID: PMC7606550 DOI: 10.1016/j.pharmthera.2020.107632] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Accepted: 07/15/2020] [Indexed: 12/16/2022]
Abstract
GLI-Similar 3 (GLIS3) is a member of the GLIS subfamily of Krüppel-like zinc finger transcription factors that functions as an activator or repressor of gene expression. Study of GLIS3-deficiency in mice and humans revealed that GLIS3 plays a critical role in the regulation of several biological processes and is implicated in the development of various diseases, including hypothyroidism and diabetes. This was supported by genome-wide association studies that identified significant associations of common variants in GLIS3 with increased risk of these pathologies. To obtain insights into the causal mechanisms underlying these diseases, it is imperative to understand the mechanisms by which this protein regulates the development of these pathologies. Recent studies of genes regulated by GLIS3 led to the identification of a number of target genes and have provided important molecular insights by which GLIS3 controls cellular processes. These studies revealed that GLIS3 is essential for thyroid hormone biosynthesis and identified a critical function for GLIS3 in the generation of pancreatic β cells and insulin gene transcription. These observations raised the possibility that the GLIS3 signaling pathway might provide a potential therapeutic target in the management of diabetes, hypothyroidism, and other diseases. To develop such strategies, it will be critical to understand the upstream signaling pathways that regulate the activity, expression and function of GLIS3. Here, we review the recent progress on the molecular mechanisms by which GLIS3 controls key functions in thyroid follicular and pancreatic β cells and how this causally relates to the development of hypothyroidism and diabetes.
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Affiliation(s)
- David W Scoville
- Cell Biology Group, Immunity, Inflammation and Disease Laboratory, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC 27709, USA
| | - Hong Soon Kang
- Cell Biology Group, Immunity, Inflammation and Disease Laboratory, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC 27709, USA
| | - Anton M Jetten
- Cell Biology Group, Immunity, Inflammation and Disease Laboratory, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC 27709, USA.
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Sinha S, Renavikar PS, Crawford MP, Steward-Tharp SM, Brate A, Tsalikian E, Tansey M, Shivapour ET, Cho T, Kamholz J, Karandikar NJ. Altered expression of SIRPγ on the T-cells of relapsing remitting multiple sclerosis and type 1 diabetes patients could potentiate effector responses from T-cells. PLoS One 2020; 15:e0238070. [PMID: 32853219 PMCID: PMC7451561 DOI: 10.1371/journal.pone.0238070] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Accepted: 08/08/2020] [Indexed: 11/19/2022] Open
Abstract
Factors regulating self-antigen directed immune-responses in autoimmunity are poorly understood. Signal regulatory protein gamma (SIRPγ) is a human T-cell specific protein with genetic variants associated with type 1 diabetes (T1D). SIRPγ's function in the immune system remains unclear. We show that T1D and relapsing remitting multiple sclerosis (RRMS) subjects have significantly greater frequency of rs2281808 T genetic variant, that correlates with reduced SIRPγ-expression in T-cells. Importantly, reduced SIRPγ-expression in RRMS and T1D subjects was not restricted to T variant, suggesting SIRPγ-expression is also regulated by disease specific factors in autoimmunity. Interestingly, increased frequencies of SIRPγlow T-cells in RRMS and T1D positively correlated with proinflammatory molecules from T-cells. Finally, we show that SIRPγlow T-cells have enhanced pathogenecity in vivo in a GVHD model. These findings suggest that decreased-SIRPγ expression, either determined by genetic variants or through peripherally acquired processes, may have a mechanistic link to autoimmunity through induction of hyperactive T-cells.
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Affiliation(s)
- Sushmita Sinha
- Department of Pathology, University of Iowa Health Care, Iowa City, Iowa, United States of America
- * E-mail:
| | - Pranav S. Renavikar
- Department of Pathology, University of Iowa Health Care, Iowa City, Iowa, United States of America
| | - Michael P. Crawford
- Department of Pathology, University of Iowa Health Care, Iowa City, Iowa, United States of America
| | - Scott M. Steward-Tharp
- Department of Pathology, University of Iowa Health Care, Iowa City, Iowa, United States of America
- Department of Oral Pathology, Radiology and Medicine, College of Dentistry, University of Iowa, Iowa City, Iowa, United States of America
| | - Ashley Brate
- Department of Pathology, University of Iowa Health Care, Iowa City, Iowa, United States of America
| | - Eva Tsalikian
- Department of Pediatrics, University of Iowa Health Care, Iowa City, Iowa, United States of America
| | - Michael Tansey
- Department of Pediatrics, University of Iowa Health Care, Iowa City, Iowa, United States of America
| | - Ezzatollah T. Shivapour
- Department of Neurology, University of Iowa Health Care, Iowa City, Iowa, United States of America
| | - Tracey Cho
- Department of Neurology, University of Iowa Health Care, Iowa City, Iowa, United States of America
| | - John Kamholz
- Department of Neurology, University of Iowa Health Care, Iowa City, Iowa, United States of America
| | - Nitin J. Karandikar
- Department of Pathology, University of Iowa Health Care, Iowa City, Iowa, United States of America
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KIAA1109 gene mutation in surviving patients with Alkuraya-Kučinskas syndrome: a review of literature. BMC MEDICAL GENETICS 2020; 21:136. [PMID: 32590954 PMCID: PMC7318400 DOI: 10.1186/s12881-020-01074-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Accepted: 06/19/2020] [Indexed: 12/16/2022]
Abstract
Background Alkuraya-Kučinskas syndrome is an autosomal recessive disorder characterized by brain abnormalities associated with cerebral parenchymal underdevelopment, arthrogryposis, club foot and global developmental delay. KIAA1109, a functionally uncharacterized gene is identified as the molecular cause for Alkuraya-Kučinskas syndrome. Most of the reported mutations in KIAA1109 gene result in premature termination of pregnancies or neonatal deaths while a few mutations have been reported in surviving patients with global developmental delay and intellectual disability. To our knowledge, only three surviving patients from two families have been reported with missense variants in KIAA1109. In this study, we describe four surviving patients from two related families (a multiplex family) with global developmental delay and mild to severe intellectual disability with no other systemic manifestations. There were no miscarriages or neonatal deaths reported in these families. Methods X-chromosome exome panel sequencing was carried out in one patient and whole exome sequencing was carried out on the remaining three affected individuals and the unaffected father of the index family. Data analysis was carried out followed by variant filtering and segregation analysis. Sanger sequencing was carried out to validate the segregation of mutation in all four affected siblings and unaffected parents from both families. Results A novel homozygous missense mutation in a conserved region of KIAA1109 protein was identified. Sanger sequencing confirmed the segregation of mutation in both families in an autosomal recessive fashion. Conclusion Our study is the second study reporting a KIAA1109 variant in surviving patients with Alkuraya-Kučinskas syndrome. Our study expands the spectrum of phenotypic features and mutations associated with Alkuraya-Kučinskas syndrome.
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Dieter C, Lemos NE, Dorfman LE, Duarte GCK, Assmann TS, Crispim D. The rs11755527 polymorphism in the BACH2 gene and type 1 diabetes mellitus: case control study in a Brazilian population. ARCHIVES OF ENDOCRINOLOGY AND METABOLISM 2020; 64:138-143. [PMID: 32236312 PMCID: PMC10118942 DOI: 10.20945/2359-3997000000214] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Accepted: 09/02/2019] [Indexed: 11/23/2022]
Abstract
Objective Type 1 diabetes mellitus (T1DM) is an autoimmune disorder caused by a complex interaction between environmental and genetic risk factors. BTB domain and CNC homolog 2 (BACH2) gene encodes a transcription factor that acts on the differentiation and formation of B and T lymphocytes. BACH2 is also involved in the suppression of apoptosis and inflammation in pancreatic beta-cells, indicating a role for it in the development of T1DM. Therefore, the aim of this study was to evaluate the association of the BACH2 rs11755527 single nucleotide polymorphism (SNP) with T1DM. Subjects and methods This case-control study comprised 475 patients with T1DM and 598 nondiabetic individuals. The BACH2 rs11755527 (C/G) SNP was genotyped using real-time PCR with TaqMan MGB probes. Results Genotype distributions of rs11755527 SNP were in accordance with frequencies predicted by the Hardy-Weinberg equilibrium in case and control groups and were similar between groups (P = 0.729). The minor allele frequency was 43.6% in cases and 42.5% in controls (P = 0.604). Moreover, the G allele frequency did not differ between groups when considering different inheritance models and adjusting for age, gender, body mass index, and HLA DR/DQ genotypes of high-risk for T1DM. Although, well-known high-risk T1DM HLA DR/DQ genotypes were associated with T1DM in our population [OR= 7.42 (95% CI 3.34 - 17.0)], this association was not influenced by the rs11755527 SNP. Conclusion The BACH2 rs11755527 SNP seems not to be associated with T1DM in a Brazilian population.
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Affiliation(s)
- Cristine Dieter
- Divisão de Endocrinologia, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brasil
| | - Natália Emerim Lemos
- Divisão de Endocrinologia, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brasil
| | | | | | - Taís Silveira Assmann
- Divisão de Endocrinologia, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brasil
| | - Daisy Crispim
- Divisão de Endocrinologia, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brasil
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Bhatty A, Baig S, Fawwad A, Rubab ZE, Shahid MA, Waris N. Association of Zinc Transporter-8 Autoantibody (ZnT8A) with Type 1 Diabetes Mellitus. Cureus 2020; 12:e7263. [PMID: 32292675 PMCID: PMC7153815 DOI: 10.7759/cureus.7263] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Zinc transporter 8 autoantibody (ZnT8A), discovered through bioinformatics, is identified as another major biomarker for type 1 diabetes mellitus (T1DM), expanding the panel of diagnostic autoantibodies. The absence of standard autoantibodies in T1DM patients and the presence of ZnT8A in individuals before disease development has led the researchers to evaluate ZnT8A to gather information about the frequency and its association. Therefore, we aim to find out the concentration of ZnT8A and its association with T1DM. METHODS A case-control study with 25 type 1 diabetes mellitus patients and 25 first-degree relatives of cases as controls was conducted at Ziauddin University in collaboration with the Baqai Institute of Diabetology and Endocrinology (BIDE), Karachi. Demographic data were collected from patients on a standard questionnaire. Blood samples were collected, after approval from Ziauddin Ethics Review Committee, from subjects and serum was separated to estimate ZnT8A by using sandwich enzyme-linked immunosorbent assay (ELISA). RESULTS The mean age at diagnosis of T1DM patients was 13.40±5.05 years, and the duration of diabetes was 7.74±5.85 years. The frequency of ZnT8A was found higher in cases (19 (76%)) compared to controls (6 (24%)). ZnT8A concentrations were significantly higher in cases (13.82 ng/ml) compared to the controls (8.78 ng/ml; p= 0.024). The cut-off value of 9 ng/ml was selected for measuring sensitivity, specificity, and accuracy, which were determined as 76%, 76%, and 76%, respectively. CONCLUSIONS ZnT8A was found significantly associated with T1DM. Subjects with ZnT8A values ≥ 9 ng/ml are 10 times more at risk to develop T1DM (p = 0.000).
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Affiliation(s)
| | - Saeeda Baig
- Biochemistry, Ziauddin University, Karachi, PAK
| | - Asher Fawwad
- Medicine, Baqai Institute of Diabetology and Endocrinology, Baqai Medical University, Karachi, PAK
| | - Zil E Rubab
- Biochemistry, Ziauddin University, Karachi, PAK
| | | | - Nazish Waris
- Research, Baqai Institute of Diabetology and Endocrinology, Karachi, PAK
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Aslam MM, John P, Fan KH, Bhatti A, Jahangir S, Feingold E, Demirci FY, Kamboh MI. Exploration of shared genetic susceptibility loci between type 1 diabetes and rheumatoid arthritis in the Pakistani population. BMC Res Notes 2019; 12:544. [PMID: 31455420 PMCID: PMC6712654 DOI: 10.1186/s13104-019-4590-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Accepted: 08/21/2019] [Indexed: 12/11/2022] Open
Abstract
OBJECTIVE Type 1 diabetes (T1D) and rheumatoid arthritis (RA) are autoimmune diseases. It is known that certain genetic loci and factors that increase the overall autoimmunity risk can be shared among different autoimmune diseases. We sought to replicate seven T1D-related SNPs (single nucleotide polymorphisms) that have been previously reported to be associated with RA susceptibility in a small set of mixed family-based and case-control Pakistani sample in a relatively large and independent RA case-control sample from the same population. Seven T1D-associated SNPs (GLIS3/rs7020673, BACH2/rs11755527, SKAP2/rs7804356, GDSMB/rs2290400, C6orf173/rs9388489, LOC399716/rs947474 and DLK1-MEG2/rs941576) were genotyped in a large Pakistani RA case-control sample (n = 1959) using TaqMan® SNP genotyping assays. RESULTS None of the tested SNPs showed statistically significant association with RA susceptibility; however, one SNP (GLIS3/rs7020673) showed a trend for association (OR = 0.88, p = 7.99E-02). Our study has failed to replicate the previously reported association of seven T1D-associated SNPs with RA risk in a large sample from the same population. Thus, our results do not support a major role of these T1D SNPs in affecting RA susceptibility in the Pakistani population.
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Affiliation(s)
- Muhammad Muaaz Aslam
- Atta-ur-Rahman School of Applied Biosciences (ASAB), National University of Sciences and Technology (NUST), Islamabad, Pakistan.,Department of Human Genetics, Graduate School of Public Health (GSPH), University of Pittsburgh, Pittsburgh, PA, 15216, USA
| | - Peter John
- Atta-ur-Rahman School of Applied Biosciences (ASAB), National University of Sciences and Technology (NUST), Islamabad, Pakistan
| | - Kang-Hsien Fan
- Department of Human Genetics, Graduate School of Public Health (GSPH), University of Pittsburgh, Pittsburgh, PA, 15216, USA
| | - Attya Bhatti
- Atta-ur-Rahman School of Applied Biosciences (ASAB), National University of Sciences and Technology (NUST), Islamabad, Pakistan
| | - Sidrah Jahangir
- Atta-ur-Rahman School of Applied Biosciences (ASAB), National University of Sciences and Technology (NUST), Islamabad, Pakistan
| | - Eleanor Feingold
- Department of Human Genetics, Graduate School of Public Health (GSPH), University of Pittsburgh, Pittsburgh, PA, 15216, USA
| | - F Yesim Demirci
- Department of Human Genetics, Graduate School of Public Health (GSPH), University of Pittsburgh, Pittsburgh, PA, 15216, USA
| | - M Ilyas Kamboh
- Department of Human Genetics, Graduate School of Public Health (GSPH), University of Pittsburgh, Pittsburgh, PA, 15216, USA.
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The Association between rs2292239 Polymorphism in ERBB3 Gene and Type 1 Diabetes: A Meta-Analysis. BIOMED RESEARCH INTERNATIONAL 2019; 2019:7689642. [PMID: 31467911 PMCID: PMC6699299 DOI: 10.1155/2019/7689642] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/03/2019] [Revised: 04/16/2019] [Accepted: 07/11/2019] [Indexed: 12/25/2022]
Abstract
Objectives The purpose of this study was to explore the association between rs2292239 polymorphism in ERBB3 gene and type 1 diabetes (T1D). Methods A systematic search of studies on the association of rs2292239 polymorphism in ERBB3 gene with T1D susceptibility was conducted in PubMed, Web of science, Elsevier Science Direct, and Cochrane Library. Eventually, 9 published studies were included. The strength of association between rs2292239 polymorphism and T1D susceptibility was assessed by odds ratios (ORs) with its 95% confidence intervals (CIs). Results A total of 9 case-control studies, consisting of 5369 T1D patients and 6920 controls, were included in the meta-analysis. This meta-analysis showed significant association between ERBB3 rs2292239 polymorphism and T1D susceptibility in overall population (A vs. C, OR: 1.292, 95% CI= 1.224-1.364, P H=0.450, P H is P value for the heterogeneity test). Similar results were found in subgroup analysis by ethnicity. Conclusions ERBB3 rs2292239 polymorphism is associated with T1D susceptibility and rs2292239-A allele is a risk factor for T1D. However, more large-scale studies are warranted to replicate our findings.
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Chen S, Fan H, Feng Y, Zhang Y, Chen Y, Gu Y, Shi Y, Dai H, Zhang M, Xu X, Chen H, Yang T, Xu K. The association between rs1893217, rs478582 in PTPN2 and T1D risk with different diagnosed age, and related clinical characteristics in Chinese Han population. Autoimmunity 2019; 52:95-101. [PMID: 31030572 DOI: 10.1080/08916934.2019.1608191] [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] [Indexed: 10/26/2022]
Abstract
OBJECTIVE To investigate the association between polymorphisms in PTPN2 (rs1893217 and rs478582) and type 1 diabetes (T1D) risk with different diagnosed age, as well as related clinical characteristics in Chinese Han population. METHODS A total of 2270 Chinese Han individuals (1023 T1D patients and 1247 healthy controls) were genotyped for rs1893217 and rs478582. And 306 newly diagnosed T1D patients were measured for C-peptide levels based on a standard mixed-meal tolerance test. In addition, 40 healthy controls were analyzed for different T cell subsets by multi-color flow cytometry. RESULTS Neither rs1893217 nor rs478582 showed any association with T1D risk under an additive model. Stratified analysis for T1D diagnosed age revealed that rs1893217, but not rs478582, was significantly associated with T1D patients diagnosed age ≤18 (OR =0.80, 95% CI: 0.67-0.97, p = 0.02). For those diagnosed age >18, neither of them showed any association. We also found that rs1893217 had a higher positive rate of ZnT8A (CC vs. TT carrier, OR = 2.07, 95% CI: 1.07-4.03, p = 0.026) and IA-2A (CT vs. TT carrier, OR = 1.36, 95% CI: 1.02-1.80, p = 0.038). Furthermore, for rs478582, compared with TT, healthy individuals carrying CC/CT carriers had significantly lower frequency and Helios expression of naive Treg subsets (p = 0.049 and 0.048 respectively), but not secreting or activating Treg subsets. In addition, we did not find any association between these two polymorphisms and residual β-cell function in newly diagnosed T1D patients. CONCLUSIONS Our results suggest that rs1893217 may increase the risk of early-onset T1D and affect humoral immunity, while rs478582 may affect Treg subsets.
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Affiliation(s)
- Shu Chen
- a Department of Endocrinology , The First Affiliated Hospital of Nanjing Medical University , Nanjing , China
| | - Hongqi Fan
- a Department of Endocrinology , The First Affiliated Hospital of Nanjing Medical University , Nanjing , China
| | - Yingjie Feng
- a Department of Endocrinology , The First Affiliated Hospital of Nanjing Medical University , Nanjing , China
| | - Yuyue Zhang
- a Department of Endocrinology , The First Affiliated Hospital of Nanjing Medical University , Nanjing , China
| | - Yang Chen
- a Department of Endocrinology , The First Affiliated Hospital of Nanjing Medical University , Nanjing , China
| | - Yong Gu
- a Department of Endocrinology , The First Affiliated Hospital of Nanjing Medical University , Nanjing , China
| | - Yun Shi
- a Department of Endocrinology , The First Affiliated Hospital of Nanjing Medical University , Nanjing , China
| | - Hao Dai
- a Department of Endocrinology , The First Affiliated Hospital of Nanjing Medical University , Nanjing , China
| | - Mei Zhang
- a Department of Endocrinology , The First Affiliated Hospital of Nanjing Medical University , Nanjing , China
| | - Xinyu Xu
- a Department of Endocrinology , The First Affiliated Hospital of Nanjing Medical University , Nanjing , China
| | - Heng Chen
- a Department of Endocrinology , The First Affiliated Hospital of Nanjing Medical University , Nanjing , China
| | - Tao Yang
- a Department of Endocrinology , The First Affiliated Hospital of Nanjing Medical University , Nanjing , China
| | - Kuanfeng Xu
- a Department of Endocrinology , The First Affiliated Hospital of Nanjing Medical University , Nanjing , China
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Fawwad A, Govender D, Ahmedani MY, Basit A, Lane JA, Mack SJ, Atkinson MA, Henry Wasserfall C, Ogle GD, Noble JA. Clinical features, biochemistry and HLA-DRB1 status in youth-onset type 1 diabetes in Pakistan. Diabetes Res Clin Pract 2019; 149:9-17. [PMID: 30710658 PMCID: PMC6456725 DOI: 10.1016/j.diabres.2019.01.023] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Revised: 12/10/2018] [Accepted: 01/15/2019] [Indexed: 01/17/2023]
Abstract
Published information on diabetes in Pakistani youth is limited. We aimed to investigate the demographic, clinical, and biochemical features, and HLA-DRB1 alleles in new cases of diabetes affecting children and adolescents <22 years of age. The study was conducted at Baqai Institute of Diabetology and Endocrinology in Karachi from June 2013-December 2015. One hundred subjects aged <22 years at diagnosis were enrolled. Demographic characteristics, clinical information, biochemical parameters (blood glucose, HbA1c, C-peptide, glutamic acid decarboxylase 65 (GAD65) and islet antigen 2 (IA-2) autoantibodies) were measured. DNA from 100 subjects and 200 controls was extracted and genotyped for HLA-DRB1 using high-resolution genotyping technology. Ninety-nine subjects were clinically diagnosed as type 1 diabetes (T1D) and one as type 2 diabetes (T2D). Of the 99 with T1D, 57 (57.6%) were males and 42 (42.4%) females, with mean age at diagnosis 11.0 ± 5.2 years (range 1.6-21.7 years) and peaks at six and fifteen years. Fifty-seven subjects were assessed within one month of diagnosis and all within eleven months. For the subjects diagnosed as T1D, mean C-peptide was 0.63 ± 0.51 nmol/L (1.91 ± 1.53 ng/mL), with 16 (16.2%) IA2 positive, 53 (53.5%) GAD-65 positive, and 10 (10.1%) positive for both autoantibodies. In T1D patients, the allele DRB1*03:01 demonstrated highly significant T1D association (p < 10-16), with no apparent risk conferred by DRB1*04:xx alleles. CONCLUSIONS: Heterogeneous forms of T1D appear more common in children and youth in Pakistan than in European populations. Individual understanding of such cases could enable improved management strategies and healthier outcomes.
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Affiliation(s)
- Asher Fawwad
- Biochemistry Department, Baqai Medical University, Gadap, Karachi, Pakistan; Baqai Institute of Diabetology and Endocrinology, Nazimabad, Karachi, Pakistan.
| | - Denira Govender
- Life for a Child, Glebe, NSW 2037, Australia; Sydney Medical School, University of Sydney, NSW 2006, Australia.
| | | | - Abdul Basit
- Baqai Institute of Diabetology and Endocrinology, Nazimabad, Karachi, Pakistan.
| | - Julie Ann Lane
- Children's Hospital Oakland Research Institute, Oakland, CA 94609, USA.
| | - Steven John Mack
- Children's Hospital Oakland Research Institute, Oakland, CA 94609, USA.
| | - Mark Alvin Atkinson
- Department of Pathology, Immunology and Laboratory Medicine, College of Medicine, Diabetes Institute, University of Florida, Gainesville, FL 32610, USA; Department of Pediatrics, College of Medicine, Diabetes Institute, University of Florida, Gainesville, FL 32610, USA.
| | - Clive Henry Wasserfall
- Department of Pathology, Immunology and Laboratory Medicine, College of Medicine, Diabetes Institute, University of Florida, Gainesville, FL 32610, USA.
| | - Graham David Ogle
- Life for a Child, Glebe, NSW 2037, Australia; Diabetes NSW, Sydney, Australia.
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Wang Y, Wang Z, Zhang H. Identification of diagnostic biomarker in patients with gestational diabetes mellitus based on transcriptome-wide gene expression and pattern recognition. J Cell Biochem 2019; 120:1503-1510. [PMID: 30168213 DOI: 10.1002/jcb.27279] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Accepted: 06/28/2018] [Indexed: 01/24/2023]
Abstract
Gestational diabetes mellitus (GDM) is becoming a growing threat for all pregnancies. In this study, we set up an automatic screening method combining both transcriptomic databases and support vector machine (SVM)-based pattern recognition to select biomarkers that can be used in predicting and preventing GDM for gravidas. We screened 63 samples (32 GDM samples and 31 normal controls) in GEO database for the GDM-specific biomarkers. Differentially expressed genes between patients with GDM and normal controls were picked out using edgeR package. Enrichment analysis was performed using database for annotation, visualization, and integrated discovery. The regulatory gene network was constructed based on the KEGG pathway database. Genes in the hub of the network were selected as specific biomarkers of GDM and further validated through document investigation. Finally, the GDM prediction model was verified using the SVMs. In total, 189 probes corresponding to 69 genes that differentially expressed between GDM and controls were screened out by edgeR package. Nineteen pathways were clustered by KEGG enrichment analysis and were integrated into a regulatory network containing 572 nodes and 1874 edges. The intersection of 50 hub genes extracted from the network and 69 differential genes picked out by edgeR was a collection of six genes, including members of HLA superfamily. In the SVM model, the six genes had a good capacity of predicting GDM in both the training data set (area under curve [AUC] is 0.781) and the testing data set (AUC is 0.710) and had been reported to be associated with GDM. We found that the collection of six genes can be potentially applied as a biomarker for GDM diagnosis.
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Affiliation(s)
- Yeping Wang
- Department of Obstetrics and Gynecology, Wenzhou People's Hospital, Wenzhou Maternal and Child Health Care Hospital, The Third Clinical Institute Affiliated to Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Zuo Wang
- Department of Obstetrics and Gynecology, Wenzhou People's Hospital, Wenzhou Maternal and Child Health Care Hospital, The Third Clinical Institute Affiliated to Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Hongping Zhang
- Department of Obstetrics and Gynecology, Wenzhou People's Hospital, Wenzhou Maternal and Child Health Care Hospital, The Third Clinical Institute Affiliated to Wenzhou Medical University, Wenzhou, Zhejiang, China
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17
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Sinha S, Renavikar PS, Crawford MP, Rodgers JW, Tsalikian E, Tansey M, Karandikar NJ. Autoimmunity-associated intronic SNP (rs2281808) detected by a simple phenotypic assay: Unique case or broader opportunity? Clin Immunol 2018; 198:57-61. [PMID: 30579937 DOI: 10.1016/j.clim.2018.12.018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Revised: 12/19/2018] [Accepted: 12/19/2018] [Indexed: 12/20/2022]
Abstract
Multiple genome-wide association studies have shown that the single-nucleotide polymorphism (SNP) rs2281808 TT variant, present within the signal regulatory protein gamma (SIRPG) gene, is associated with autoimmune diseases, such as type 1 diabetes. SIRPγ is the only SIRP expressed on T cells. The role of SIRPγ in human T-cells or the effect of the TT variant are poorly understood. In this short report, we demonstrate the rather unusual finding that this intronic SNP is associated with a reduction of SIRPγ expression on T cells, both in healthy subjects as well as patients with type 1 diabetes. Using this information, we propose that a simple flow cytometric detection of SIRPγ could be a potential diagnostic testing approach for the presence of SNP in the appropriate clinical context.
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Affiliation(s)
- Sushmita Sinha
- Departments of Pathology, University of Iowa Health Care, Iowa City, IA 52242, United States
| | - Pranav S Renavikar
- Departments of Pathology, University of Iowa Health Care, Iowa City, IA 52242, United States
| | - Michael P Crawford
- Departments of Pathology, University of Iowa Health Care, Iowa City, IA 52242, United States
| | - Jake W Rodgers
- Departments of Pathology, University of Iowa Health Care, Iowa City, IA 52242, United States
| | - Eva Tsalikian
- Departments of Pediatrics, University of Iowa Health Care, Iowa City, IA 52242, United States
| | - Michael Tansey
- Departments of Pediatrics, University of Iowa Health Care, Iowa City, IA 52242, United States
| | - Nitin J Karandikar
- Departments of Pathology, University of Iowa Health Care, Iowa City, IA 52242, United States.
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18
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Sinha S, Borcherding N, Renavikar PS, Crawford MP, Tsalikian E, Tansey M, Shivapour ET, Bittner F, Kamholz J, Olalde H, Gibson E, Karandikar NJ. An autoimmune disease risk SNP, rs2281808, in SIRPG is associated with reduced expression of SIRPγ and heightened effector state in human CD8 T-cells. Sci Rep 2018; 8:15440. [PMID: 30337675 PMCID: PMC6194019 DOI: 10.1038/s41598-018-33901-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Accepted: 10/08/2018] [Indexed: 01/17/2023] Open
Abstract
Multiple GWAS studies have shown that the SNP rs2281808 TT variant, present within the SIRPG gene, is associated with autoimmune diseases, such as type 1 diabetes. However, the role of SIRPγ in human T-cells is not known, neither is the functional significance of TT variant. Here we investigated SIRPG genotypes and their effects on the fate and function of human T-cells. We found that the presence of T variant resulted in reduction of SIRPγ expression on T-cells. Functionally, SIRPγlow CD8 T-cells in CT and TT individuals existed in a heightened effector state with lower activation threshold and had greater expression of genes and molecules associated with migratory and cytotoxic potential. Further, SIRPγlow CD8 T-cells were deficient in transcription factors associated with long-term functional memory formation. Our study reveals biological consequences of the SNP rs2281808 and provides novel insights into the potential mechanisms by which SIRPγ might regulate human immune responses.
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Affiliation(s)
- Sushmita Sinha
- Department of Pathology, University of Iowa, 200 Hawkins Dr., Iowa City, IA, 52242, USA.
| | - Nicholas Borcherding
- Department of Pathology, University of Iowa, 200 Hawkins Dr., Iowa City, IA, 52242, USA
| | - Pranav S Renavikar
- Department of Pathology, University of Iowa, 200 Hawkins Dr., Iowa City, IA, 52242, USA
| | - Michael P Crawford
- Department of Pathology, University of Iowa, 200 Hawkins Dr., Iowa City, IA, 52242, USA
| | - Eva Tsalikian
- Department of Pediatrics, University of Iowa, 200 Hawkins Dr., Iowa City, IA, 52242, USA
| | - Michael Tansey
- Department of Pediatrics, University of Iowa, 200 Hawkins Dr., Iowa City, IA, 52242, USA
| | | | - Frank Bittner
- Department of Neurology, University of Iowa, 200 Hawkins Dr., Iowa City, IA, 52242, USA
| | - John Kamholz
- Department of Neurology, University of Iowa, 200 Hawkins Dr., Iowa City, IA, 52242, USA
| | - Heena Olalde
- Department of Neurology, University of Iowa, 200 Hawkins Dr., Iowa City, IA, 52242, USA
| | - Emilee Gibson
- Department of Neurology, University of Iowa, 200 Hawkins Dr., Iowa City, IA, 52242, USA
| | - Nitin J Karandikar
- Department of Pathology, University of Iowa, 200 Hawkins Dr., Iowa City, IA, 52242, USA
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Jetten AM. GLIS1-3 transcription factors: critical roles in the regulation of multiple physiological processes and diseases. Cell Mol Life Sci 2018; 75:3473-3494. [PMID: 29779043 PMCID: PMC6123274 DOI: 10.1007/s00018-018-2841-9] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Revised: 05/07/2018] [Accepted: 05/14/2018] [Indexed: 12/12/2022]
Abstract
Krüppel-like zinc finger proteins form one of the largest families of transcription factors. They function as key regulators of embryonic development and a wide range of other physiological processes, and are implicated in a variety of pathologies. GLI-similar 1-3 (GLIS1-3) constitute a subfamily of Krüppel-like zinc finger proteins that act either as activators or repressors of gene transcription. GLIS3 plays a critical role in the regulation of multiple biological processes and is a key regulator of pancreatic β cell generation and maturation, insulin gene expression, thyroid hormone biosynthesis, spermatogenesis, and the maintenance of normal kidney functions. Loss of GLIS3 function in humans and mice leads to the development of several pathologies, including neonatal diabetes and congenital hypothyroidism, polycystic kidney disease, and infertility. Single nucleotide polymorphisms in GLIS3 genes have been associated with increased risk of several diseases, including type 1 and type 2 diabetes, glaucoma, and neurological disorders. GLIS2 plays a critical role in the kidney and GLIS2 dysfunction leads to nephronophthisis, an end-stage, cystic renal disease. In addition, GLIS1-3 have regulatory functions in several stem/progenitor cell populations. GLIS1 and GLIS3 greatly enhance reprogramming efficiency of somatic cells into induced embryonic stem cells, while GLIS2 inhibits reprogramming. Recent studies have obtained substantial mechanistic insights into several physiological processes regulated by GLIS2 and GLIS3, while a little is still known about the physiological functions of GLIS1. The localization of some GLIS proteins to the primary cilium suggests that their activity may be regulated by a downstream primary cilium-associated signaling pathway. Insights into the upstream GLIS signaling pathway may provide opportunities for the development of new therapeutic strategies for diabetes, hypothyroidism, and other diseases.
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Affiliation(s)
- Anton M Jetten
- Cell Biology Group, Immunity, Inflammation and Disease Laboratory, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC, 27709, USA.
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20
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CD226 gene polymorphism (rs763361 C>T) is associated with susceptibility to type 1 diabetes mellitus among Egyptian children. Arch Pediatr 2018; 25:378-382. [PMID: 30145014 DOI: 10.1016/j.arcped.2018.06.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Revised: 06/25/2018] [Accepted: 06/30/2018] [Indexed: 12/30/2022]
Abstract
OBJECTIVE Genetic factors contribute significantly to type 1 diabetes (T1D) etiology. A single nucleotide polymorphism in the CD226 gene (rs763361 C>T) has been associated with T1D susceptibility in European patients, but data from other populations is limited. Our aim was to study the contribution of this polymorphism to T1D susceptibility among Egyptian children. METHODS A case-control study including 74 children with T1D and 82 healthy children as a control group. Genotyping of CD226 gene polymorphism was performed for all participants by DNA extraction followed by polymerase chain reaction and restriction fragment length polymorphism. RESULTS The frequency of T allele was 78.4% in patients and 68.3% in controls (OR, 1.68; 95% CI, 1.01-2.8; P=0.046). TT, TC, and CC genotypes were found in 62.2%, 32.4%, and 5.4% of the patients, respectively, and in 41.5%, 53.7%, and 4.9% of controls, respectively. Under the recessive model, TT genotype was significantly associated with T1D risk (OR, 2.32; 95% CI, 1.21-4.41; P=0.010). The mean age at diabetes onset was significantly lower in patients carrying T allele compared with C allele (8.03±3.8 year vs. 10.5±2.54 year; P<0.001) and among those with TT genotype compared with the pooled TC+CC genotypes (7.5±2.6 year vs. 10.6±2.6 year; P<0.001). No significant difference was found between genotypes or alleles regarding the HbA1c level. CONCLUSION T allele and TT genotype of the CD226 rs763361 polymorphism is associated with susceptibility to T1D and with a lower age of disease onset among Egyptian children.
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The rs2292239 polymorphism in ERBB3 gene is associated with risk for type 1 diabetes mellitus in a Brazilian population. Gene 2017; 644:122-128. [PMID: 29109006 DOI: 10.1016/j.gene.2017.11.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Revised: 10/30/2017] [Accepted: 11/02/2017] [Indexed: 01/16/2023]
Abstract
The Erb-b2 receptor tyrosine kinase 3 (ERBB3) belongs to a family of epidermal growth factor receptors of protein tyrosine kinases, and regulates cell survival, differentiation and proliferation in several cell types. Previous studies have suggested that ERBB3 contributes to T1DM pathogenesis by modulating antigen presenting cell function, autoimmunity and cytokine-induced beta-cell apoptosis. Accordingly, some genome-wide association studies identified ERBB3 gene as a susceptibility locus for T1DM, with the strongest association signal being observed for the rs2292239 single nucleotide polymorphism (SNP) in intron 7 of the gene. Therefore, the aim of the present study was to replicate the association of the ERBB3 rs2292239 SNP with T1DM in a Brazilian population. We analyzed 421 T1DM patients (cases) and 510 nondiabetic subjects (controls). All subjects were self-declared as white. The ERBB3 rs2292239 (A/C) SNP was genotyped by real-time PCR using TaqMan MGB probes. Genotype (P=0.001) and allele (P=0.002) frequencies of the ERBB3 rs2292239 SNP were differently distributed between T1DM patients and nondiabetic controls. Moreover, the A allele was significantly associated with risk for T1DM when considering recessive (OR=1.58, 95% CI 1.11-2.27; P=0.015), additive (OR=1.78, 95% CI 1.21-2.62; P=0.004), and dominant (OR=1.39, 95% CI 1.07-1.81; P=0.016) models of inheritance. However, after adjustment for presence of high-risk HLA DR/DQ genotypes, the rs2292239 SNP remained independently associated with T1DM only for the additive model (OR=1.62, 95% CI 1.02-2.59; P=0.043). Our results suggest that the A/A genotype of the ERBB3 rs2292239 SNP is associated with risk for T1DM in a white Brazilian population.
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Duarte GCK, Assmann TS, Dieter C, de Souza BM, Crispim D. GLIS3 rs7020673 and rs10758593 polymorphisms interact in the susceptibility for type 1 diabetes mellitus. Acta Diabetol 2017; 54:813-821. [PMID: 28597135 DOI: 10.1007/s00592-017-1009-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Accepted: 05/22/2017] [Indexed: 12/23/2022]
Abstract
AIMS The transcription factor Gli-similar 3 (GLIS3) plays a key role in the development and maintenance of pancreatic beta cells as well as in the regulation of Insulin gene expression in adults. Accordingly, genome-wide association studies identified GLIS3 as a susceptibility locus for type 1 diabetes mellitus (T1DM) and glucose metabolism traits. Therefore, the aim of this study was to replicate the association of the rs10758593 and rs7020673 single nucleotide polymorphisms (SNPs) in the GLIS3 gene with T1DM in a Brazilian population. METHODS Frequencies of the rs7020673 (G/C) and rs10758593 (A/G) SNPs were analyzed in 503 T1DM patients (cases) and in 442 non-diabetic subjects (controls). Haplotypes constructed from the combination of these SNPs were inferred using a Bayesian statistical method. RESULTS Genotype and allele frequencies of rs7020673 and rs10758593 SNPs did not differ significantly between case and control groups. However, the frequency of ≥3 minor alleles of the analyzed SNPs in haplotypes was higher in T1DM patients compared to non-diabetic subjects (6.2 vs. 1.6%; P = 0.001). The presence of ≥3 minor alleles remained independently associated with risk of T1DM after adjustment for T1DM high-risk HLA DR/DQ haplotypes, age and ethnicity (OR = 3.684 95% CI 1.220-11.124). Moreover, levels of glycated hemoglobin seem to be higher in T1DM patients with rs10758593 A/A genotype than patients carrying the G allele of this SNP (P = 0.038), although this association was not kept after Bonferroni correction. CONCLUSIONS Our results indicate that individually the rs7020673 and rs10758593 SNPs are not significantly associated with T1DM but seem to interact in the predisposition for this disease.
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Affiliation(s)
- Guilherme C K Duarte
- Endocrine Division, Hospital de Clínicas de Porto Alegre, Rua Ramiro Barcelos 2350, Prédio 12, 4º andar, Zip Code: 90035-003, Porto Alegre, Rio Grande do Sul, Brazil
- Faculdade de Medicina, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Tais S Assmann
- Endocrine Division, Hospital de Clínicas de Porto Alegre, Rua Ramiro Barcelos 2350, Prédio 12, 4º andar, Zip Code: 90035-003, Porto Alegre, Rio Grande do Sul, Brazil
- Faculdade de Medicina, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Cristine Dieter
- Endocrine Division, Hospital de Clínicas de Porto Alegre, Rua Ramiro Barcelos 2350, Prédio 12, 4º andar, Zip Code: 90035-003, Porto Alegre, Rio Grande do Sul, Brazil
- Faculdade de Medicina, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Bianca M de Souza
- Endocrine Division, Hospital de Clínicas de Porto Alegre, Rua Ramiro Barcelos 2350, Prédio 12, 4º andar, Zip Code: 90035-003, Porto Alegre, Rio Grande do Sul, Brazil
- Faculdade de Medicina, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Daisy Crispim
- Endocrine Division, Hospital de Clínicas de Porto Alegre, Rua Ramiro Barcelos 2350, Prédio 12, 4º andar, Zip Code: 90035-003, Porto Alegre, Rio Grande do Sul, Brazil.
- Faculdade de Medicina, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil.
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Li L, Chen S, Wang Q, Wu C, Wen X, Yang F, Liu C, Zhang F, Li Y. GLIS3 and TYK2 Single Nucleotide Polymorphisms Are Not Associated with Dermatomyositis/Polymyositis in Chinese Han Population. Genet Test Mol Biomarkers 2017; 21:565-570. [PMID: 28846454 DOI: 10.1089/gtmb.2017.0059] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
AIM Racial differences and genetic overlap have been shown to be responsible for the difference in susceptibility to dermatomyositis (DM)/polymyositis (PM) in a variety of populations. Single nucleotide polymorphisms (SNPs) in the GLI-similar 3 (GLIS3) and tyrosine kinase 2 (TYK2) genes have been associated with various autoimmune diseases. The aim of this study was to investigate whether SNPs in GLIS3 (rs7020673, rs10758593, and rs10814916) and TYK2 (rs280519, rs2304256, rs17000730, and rs280501) were associated with an increase in susceptibility to DM/PM in a Chinese Han population. MATERIALS AND METHODS SNPs in GLIS3 and TYK2 were analyzed in a cohort of 1017 patients with DM/PM and 1280 healthy controls using a Sequenom MassArray system. Association analyses were performed using the PLINK v1.07 software. RESULTS In our study, the GLIS3 polymorphisms rs7020673 and rs10758593 were initially found to be predisposing risk factors for PM and PM with interstitial lung disease (p < 0.05). Both rs7020673 and rs10758593 were associated with PM in both additive and dominant models (p < 0.05); however, these observed associations were not apparent after Bonferroni correction. Other SNPs examined in our study were not associated with susceptibility to DM/PM. CONCLUSION GLIS3 and TYK2 polymorphisms are not associated with DM/PM in the Chinese Han population. As associations of SNPs in these genes in patients with DM/PM have been previously reported in other populations, we may conclude that the lack of association in our study may be the result of differences in genetic background. Further studies in other populations are needed to confirm our findings.
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Affiliation(s)
- Liubing Li
- 1 Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital , Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - Si Chen
- 1 Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital , Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China .,2 Department of Clinical Laboratory, Beijing Anzhen Hospital, Capital Medical University , Beijing, China
| | - Qian Wang
- 1 Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital , Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - Chanyuan Wu
- 1 Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital , Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - Xiaoting Wen
- 1 Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital , Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - Funing Yang
- 1 Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital , Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China .,3 Department of Medical Laboratory, The First Hospital of Jilin University , Changchun, China
| | - Chenxi Liu
- 1 Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital , Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - Fengchun Zhang
- 1 Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital , Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - Yongzhe Li
- 1 Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital , Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
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Wen X, Yang Y. Emerging roles of GLIS3 in neonatal diabetes, type 1 and type 2 diabetes. J Mol Endocrinol 2017; 58:R73-R85. [PMID: 27899417 DOI: 10.1530/jme-16-0232] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Accepted: 11/25/2016] [Indexed: 12/26/2022]
Abstract
GLI-similar 3 (GLIS3), a member of the Krüppel-like zinc finger protein subfamily, is predominantly expressed in the pancreas, thyroid and kidney. Glis3 mRNA can be initially detected in mouse pancreas at embryonic day 11.5 and is largely restricted to β cells, pancreatic polypeptide-expressing cells, as well as ductal cells at later stage of pancreas development. Mutations in GLIS3 cause a neonatal diabetes syndrome, characterized by neonatal diabetes, congenital hypothyroidism and polycystic kidney. Importantly, genome-wide association studies showed that variations of GLIS3 are strongly associated with both type 1 diabetes (T1D) and type 2 diabetes (T2D) in multiple populations. GLIS3 cooperates with pancreatic and duodenal homeobox 1 (PDX1), v-maf musculoaponeurotic fibrosarcoma oncogene family, protein A (MAFA), as well as neurogenic differentiation 1 (NEUROD1) and potently controls insulin gene transcription. GLIS3 also plays a role in β cell survival and likely in insulin secretion. Any perturbation of these functions may underlie all three forms of diabetes. GLIS3, synergistically with hepatocyte nuclear factor 6 (HNF6) and forkhead box A2 (FOXA2), controls fetal islet differentiation via transactivating neurogenin 3 (NGN3) and impairment of this function leads to neonatal diabetes. In addition, GLIS3 is also required for the compensatory β cell proliferation and mass expansion in response to insulin resistance, which if disrupted may predispose to T2D. The increasing understanding of the mechanisms of GLIS3 in β cell development, survival and function maintenance will provide new insights into disease pathogenesis and potential therapeutic target identification to combat diabetes.
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Affiliation(s)
- Xianjie Wen
- Division of EndocrinologyDepartment of Medicine, MetroHealth Medical Center, Case Western Reserve University, Cleveland, Ohio, USA
- Department of AnesthesiologyThe First People's Hospital of Foshan & Foshan Hospital of Sun Yat-sen University, Guangdong, China
| | - Yisheng Yang
- Division of EndocrinologyDepartment of Medicine, MetroHealth Medical Center, Case Western Reserve University, Cleveland, Ohio, USA
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Yang Y, Chan L. Monogenic Diabetes: What It Teaches Us on the Common Forms of Type 1 and Type 2 Diabetes. Endocr Rev 2016; 37:190-222. [PMID: 27035557 PMCID: PMC4890265 DOI: 10.1210/er.2015-1116] [Citation(s) in RCA: 84] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
To date, more than 30 genes have been linked to monogenic diabetes. Candidate gene and genome-wide association studies have identified > 50 susceptibility loci for common type 1 diabetes (T1D) and approximately 100 susceptibility loci for type 2 diabetes (T2D). About 1-5% of all cases of diabetes result from single-gene mutations and are called monogenic diabetes. Here, we review the pathophysiological basis of the role of monogenic diabetes genes that have also been found to be associated with common T1D and/or T2D. Variants of approximately one-third of monogenic diabetes genes are associated with T2D, but not T1D. Two of the T2D-associated monogenic diabetes genes-potassium inward-rectifying channel, subfamily J, member 11 (KCNJ11), which controls glucose-stimulated insulin secretion in the β-cell; and peroxisome proliferator-activated receptor γ (PPARG), which impacts multiple tissue targets in relation to inflammation and insulin sensitivity-have been developed as major antidiabetic drug targets. Another monogenic diabetes gene, the preproinsulin gene (INS), is unique in that INS mutations can cause hyperinsulinemia, hyperproinsulinemia, neonatal diabetes mellitus, one type of maturity-onset diabetes of the young (MODY10), and autoantibody-negative T1D. Dominant heterozygous INS mutations are the second most common cause of permanent neonatal diabetes. Moreover, INS gene variants are strongly associated with common T1D (type 1a), but inconsistently with T2D. Variants of the monogenic diabetes gene Gli-similar 3 (GLIS3) are associated with both T1D and T2D. GLIS3 is a key transcription factor in insulin production and β-cell differentiation during embryonic development, which perturbation forms the basis of monogenic diabetes as well as its association with T1D. GLIS3 is also required for compensatory β-cell proliferation in adults; impairment of this function predisposes to T2D. Thus, monogenic forms of diabetes are invaluable "human models" that have contributed to our understanding of the pathophysiological basis of common T1D and T2D.
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Affiliation(s)
- Yisheng Yang
- Division of Endocrinology (Y.Y.), Department of Medicine, MetroHealth Medical Center, Case Western Reserve University, Cleveland, Ohio 44109; and Diabetes and Endocrinology Research Center (L.C.), Division of Diabetes, Endocrinology and Metabolism, Departments of Medicine, Molecular and Cellular Biology, Biochemistry and Molecular Biology, and Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas 77030
| | - Lawrence Chan
- Division of Endocrinology (Y.Y.), Department of Medicine, MetroHealth Medical Center, Case Western Reserve University, Cleveland, Ohio 44109; and Diabetes and Endocrinology Research Center (L.C.), Division of Diabetes, Endocrinology and Metabolism, Departments of Medicine, Molecular and Cellular Biology, Biochemistry and Molecular Biology, and Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas 77030
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ERBB3-rs2292239 as primary type 1 diabetes association locus among non-HLA genes in Chinese. Meta Gene 2016; 9:120-3. [PMID: 27331016 PMCID: PMC4908278 DOI: 10.1016/j.mgene.2016.05.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Revised: 04/18/2016] [Accepted: 05/11/2016] [Indexed: 12/13/2022] Open
Abstract
Type 1 diabetes (T1D) is an autoimmune disease that has strong contribution of genetic factors to its etiology. We aimed to assess the genetic association between non-HLA genes and T1D in a Chinese case-control cohort recruited from multiple centers consisting of 364 patients with T1D and 719 unrelated healthy children. We genotyped 55 single nucleotide polymorphisms (SNP) markers located in 16 non-HLA genes (VTCN1, PTPN22, CTLA4, SUMO4, CD274, IL2RA, INS, DHCR7, ERBB3, VDR, CYP27B1, CD69, CD276, PTPN2, UBASH3A, and IL2RB) using SNaPshot multiple single-base extension methods. After multivariate analysis and correction for multiple comparisons, we identified the SNP rs2292239 in ERBB3 gene were significantly associated with T1D. The frequency of the major G allele was significantly decreased in patients with T1D (68.8% in T1D vs 77.3% in controls, OR 0.65, 95% CI 0.53–0.79, P = 0.02), and the minor allele T was associated with an increased risk of T1D (OR 1.55, 95% CI 1.26–1.90, P = 0.02). Our haplotype analysis confirmed that rs2292239 was the primary T1D association locus in our current investigation. These results indicated that the ERBB3-rs2292239 was the primary T1D association locus among the investigated 55 SNPs in 16 non-HLA genes in Chinese Han population. A large scale case-control genetic association study on type 1 diabetes in Chinese investigating on-HLA genes. rs2292239 in the ERBB3 gene conferred the primary non-HLA association in Chinese type 1 diabetes. Markers in the common candidate genes, such as PTPN22, CTLA4, IL2RA, and INS, were not significantly associated with T1D in our Chinese cohort.
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Key Words
- CI, confidence interval
- DNA, deoxyribonucleic acid
- EGFR, epidermal growth factor receptor
- ERBB3
- GWAS, genome-wide association study
- Genetic association
- HLA, human leukocyte antigen
- HWE, Hardy-Weinberg equilibrium
- OR, odds ratio
- SBE, single-base extension
- SNP, single nucleotide polymorphism
- Single nucleotide polymorphism
- T1D, type 1 diabetes
- Type 1 diabetes
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