Mechanisms That Regulate Peripheral Immune Responses to Control Organ-Specific Autoimmunity

نویسنده

  • Gerard F. Hoyne
چکیده

The immune system must balance the need to maintain a diverse repertoire of lymphocytes to be able to fight infection with the need to maintain tolerance to self-proteins. The immune system places strict regulation over the ability of T cells to produce the major T cell growth factor interleukin 2 as this cytokine can influence a variety of immune outcomes. T cells require the delivery of two signals, one through the antigen receptor and a second through the costimulatory receptor CD28. The immune system uses a variety of E3 ubiquitin ligases to target signaling proteins that function downstream of the TCR and CD28 receptors. Mutations in these E3 ligases can lead to a breakdown in immune tolerance and development of autoimmunity. This paper will examine the role of a range of E3 ubiquitin ligases and signaling pathways that influence the development of T-cell effector responses and the development of organ-specific autoimmune diseases such as type 1 diabetes.

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

CTLA4 Gene Variants in Autoimmunity and Cancer: a Comparative Review

Gene association studies are less appealing in cancer compared to autoimmune diseases. Complexity, heterogeneity, variation in histological types, age at onset, short survival, and acute versus chronic conditions are cancer related factors which are different from an organ specific autoimmune disease, such as Grave’s disease, on which a large body of multicentre data is accumulated. For years t...

متن کامل

Signaling triggered by glucocorticoid-induced tumor necrosis factor receptor family-related gene: regulation at the interface between regulatory T cells and immune effector cells.

Mammals and other higher vertebrates have developed an adaptive immune system to defy effectively countless pathogens and cancerous cells encountered during the lifetime of an individual. B and T lymphocytes, which are essential in orchestrating adaptive immune responses, express surface receptors specific for foreign and abnormal self-antigens. Genesis of this antigen receptor repertoire poses...

متن کامل

Viral Infections and their Role in Autoimmune Diseases, with Emphasis on Mechanisms and Molecular Interactions

Introduction: The exact cause of most autoimmune diseases is still unknown; however, several factors play a role in causing or exacerbating autoimmune reactions. In addition to environmental factors such as bacterial, parasitic, fungal and viral infections, factors such as genetic characteristics and lifestyle are also included. Infections caused by viruses usually trigger a strong immune respo...

متن کامل

Immune Responses to Tissue-Restricted Nonmajor Histocompatibility Complex Antigens in Allograft Rejection

Chronic diseases that result in end-stage organ damage cause inflammation, which can reveal sequestered self-antigens (SAgs) in that organ and trigger autoimmunity. The thymus gland deletes self-reactive T-cells against ubiquitously expressed SAgs, while regulatory mechanisms in the periphery control immune responses to tissue-restricted SAgs. It is now established that T-cells reactive to SAgs...

متن کامل

Role of miR-146a in Immune System and Autoimmunity

MicroRNAs (miRNAs) are small preserved non-coding RNA molecules that regulate gene expression post-transcriptionally by targeting the 3' UTR of mRNAs for translational repression or degradation. The rising evidence has established the significant role of miRNAs within the regulation of immune system and the prevention of autoimmunity. MiR-146a has obtained an importance as a modulator of differ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:

دوره 2011  شماره 

صفحات  -

تاریخ انتشار 2011