Related Experiment Video

Updated: Jul 18, 2026

Accelerated Type 1 Diabetes Induction in Mice by Adoptive Transfer of Diabetogenic CD4+ T Cells
06:27

Accelerated Type 1 Diabetes Induction in Mice by Adoptive Transfer of Diabetogenic CD4+ T Cells

Published on: May 6, 2013

Association of SUMO4 M55V polymorphism with autoimmune diabetes in Latvian patients

Saikiran K Sedimbi1, Arun Shastry, Yongsoo Park

  • 1Karolinska Institute, Department of Molecular Medicine, Karolinska Hospital Campus, CMM L5:01, S-17176 Stockholm, Sweden.

Annals of the New York Academy of Sciences
|November 30, 2006
PubMed

Insights

The Small ubiquitin-related modifier 4 (SUMO4) M55V polymorphism is not linked to type 1 diabetes mellitus (T1DM) or Latent autoimmune diabetes in adults (LADA) in Latvians. This finding aligns with previous studies in Caucasian populations regarding autoimmune diabetes susceptibility.

Area of Science:

  • Genetics and Molecular Biology
  • Immunology
  • Endocrinology

Background:

  • Small ubiquitin-related modifier 4 (SUMO4) is implicated in type 1 diabetes mellitus (T1DM) pathogenesis, particularly the M55V polymorphism.
  • The SUMO4 M55V variant has shown association with T1DM susceptibility in Asian populations but not in Caucasians.
  • Latent autoimmune diabetes in adults (LADA) is a distinct form of T1DM, and the role of SUMO4 M55V in LADA remains uninvestigated.

Purpose of the Study:

  • To investigate the association between the SUMO4 M55V polymorphism and susceptibility to T1DM and LADA in the Latvian population.
  • To determine if Latvians, a Caucasian population, share genetic similarities with other Caucasian groups regarding SUMO4 M55V and autoimmune diabetes.
  • To explore potential correlations between SUMO4 M55V allelic frequencies and HLA DR3-DR4 status in Latvian T1DM and LADA patients.

Main Methods:

  • Genotyping of the SUMO4 M55V polymorphism using polymerase chain reaction (PCR)-restriction fragment length polymorphism (RFLP) in Latvian T1DM, LADA, and healthy control cohorts.
  • Age- and sex-matched case-control study design.
  • Statistical analysis comparing allelic frequencies between patient and control groups, and correlation analysis with HLA DR3-DR4 status.

Main Results:

  • No significant association was found between the SUMO4 M55V polymorphism and susceptibility to T1DM in the Latvian population.
  • The study confirmed that Latvians do not show an association between SUMO4 M55V and T1DM, consistent with findings in other Caucasian populations.
  • No significant association was observed between SUMO4 M55V and LADA susceptibility in Latvians, nor was a significant correlation found with HLA DR3-DR4 status.

Conclusions:

  • The SUMO4 M55V polymorphism is not a significant genetic factor for susceptibility to T1DM or LADA in the Latvian population.
  • Latvians exhibit genetic similarity to other Caucasian populations concerning the lack of association between SUMO4 M55V and autoimmune diabetes.
  • These findings suggest that SUMO4 M55V may not play a universal role in the genetic predisposition to T1DM and LADA across diverse ethnic groups.

More Related Videos

A High-Throughput Electrochemiluminescence 7-Plex Assay Simultaneously Screening for Type 1 Diabetes and Multiple Autoimmune Diseases06:50

A High-Throughput Electrochemiluminescence 7-Plex Assay Simultaneously Screening for Type 1 Diabetes and Multiple Autoimmune Diseases

Published on: May 29, 2020

A High-Throughput Multiplexed Screening for Type 1 Diabetes, Celiac Diseases, and COVID-1906:46

A High-Throughput Multiplexed Screening for Type 1 Diabetes, Celiac Diseases, and COVID-19

Published on: July 5, 2022

Related Concept Videos

Autoimmune Disorders01:29

Autoimmune Disorders

Autoimmune diseases are a group of disorders in which the body's immune system mistakenly attacks its own cells, tissues, and organs. This results from an overactive immune response against substances and tissues normally present in the body. Let's delve into the concept and mechanism of autoimmune diseases from an immune system point of view, explore different causes and examples of such diseases, and discuss potential solutions.
Concept and Mechanism of Autoimmune Diseases
The immune system...
Type I Diabetes I: Introduction01:12

Type I Diabetes I: Introduction

Type 1 diabetes mellitus is a chronic metabolic disorder characterized by an absolute deficiency of insulin resulting from the autoimmune destruction of pancreatic β-cells. Although it can occur at any age, it is most commonly diagnosed in childhood, adolescence, or early adulthood. The loss of insulin production impairs cellular glucose uptake, resulting in persistent hyperglycemia and necessitating lifelong insulin therapy.Autoimmune Destruction of β-CellsThe hallmark of type 1 diabetes is an...
Diabetes Mellitus: Overview and Type I Subtype01:22

Diabetes Mellitus: Overview and Type I Subtype

Diabetes mellitus is a chronic metabolic disorder characterized by high blood glucose levels due to inadequate insulin production, insulin resistance, or both. The condition affects millions worldwide and can significantly impact their health and quality of life.
Type 1 diabetes is an autoimmune disease in which the immune system mistakenly attacks and destroys the insulin-producing beta cells in the pancreas. As a result, the body is unable to produce sufficient insulin, and individuals with...
Type I Diabetes II: Pathophysiology01:26

Type I Diabetes II: Pathophysiology

Type 1 diabetes mellitus arises from an immune-mediated destruction of pancreatic β-cells, resulting in an absolute deficiency of insulin. This process develops in genetically susceptible individuals when autoimmunity, environmental exposures, and immunologic dysregulation converge to trigger a targeted attack on the insulin-producing cells of the pancreas. The β-cells are located within the islets of Langerhans and are essential for regulating blood glucose by facilitating cellular uptake of...
Type II Diabetes I: Introduction01:26

Type II Diabetes I: Introduction

Type 2 diabetes mellitus (T2DM) is a chronic metabolic disorder characterized by insulin resistance, in which target tissues such as the liver, muscle, and adipose tissue respond poorly to insulin. It is also associated with inadequate compensatory insulin secretion, where pancreatic β-cells fail to produce sufficient insulin. Together, these abnormalities lead to persistent hyperglycemia.EtiologyT2DM develops through a complex interaction of genetic predisposition and environmental or...
Type I Diabetes III: Clinical Manifestations01:19

Type I Diabetes III: Clinical Manifestations

Type 1 diabetes mellitus typically presents with rapid-onset symptoms due to the body’s inability to utilize glucose in the absence of insulin. Since insulin is required for glucose uptake into cells, its deficiency leads to hyperglycemia and cellular energy deprivation, resulting in characteristic clinical features.Polyuria and PolydipsiaOne of the earliest, most prominent symptoms is polyuria (excessive urination). When blood glucose concentrations rise above the renal threshold, the kidneys...