Type I regulatory T cells specific for desmoglein 3 are more frequently detected in healthy individuals than in patients with pemphigus vulgaris.

نویسندگان

  • Christian Veldman
  • Annette Höhne
  • Detlef Dieckmann
  • Gerold Schuler
  • Michael Hertl
چکیده

Pemphigus vulgaris (PV) is a severe autoimmune bullous skin disorder and is primarily associated with circulating autoantibodies against desmoglein 3 (Dsg3) that are presumably regulated by Th cells. The aim of this study was to identify Dsg3-specific T regulatory (Tr) cells that may help to maintain and restore natural tolerance against Dsg3. Dsg3-responsive IL-10-secreting Tr1 cells were isolated by MACS cytokine secretion assay from healthy carriers of the PV-associated HLA class II alleles, DRB1*0402 and DQB1*0503, but were only rarely detected in PV patients. The Dsg3-specific Tr1 cells secreted IL-10, TGF-beta, and IL-5 upon Ag stimulation, proliferated in response to IL-2 but not to Dsg3 or mitogenic stimuli, and inhibited the proliferative response of Dsg3- and tetanus toxoid-responsive Th clones in an Ag-specific (Dsg3) and cell number-dependent manner. Moreover, their inhibitory effect was blocked by Ab against IL-10, TGF-beta, and by paraformaldehyde fixation. These observations strongly suggest that 1) Dsg3-responsive Tr1 cells predominate in healthy individuals, 2) their growth requires the presence of IL-2, and 3) they exert their Dsg3-dependent inhibitory function by the secretion of IL-10 and TGF-beta. Because autoaggressive T cells responsive to identical epitopes of Dsg3 were recently found both in PV patients and healthy individuals, the identified Tr1 cells may be critically involved in the maintenance and restoration of tolerance against Dsg3.

برای دانلود 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

Serum Levels of Interleukin 17 in Patients with Pemphigus and Healthy Subjects

Introduction: Pemphigus is a relatively rare autoimmune bullous disease involving skin and mucous epithelia. The disease occurs as a result of production of auto-antibodies against inter-cellular epithelia especially cadherin and desmoglein. Interleukin 17 (IL-17) is one of the specific cytokines of T helper. IL-17 plays an important role in delayed type reaction and recruits neutrophils and mo...

متن کامل

Comparison of Serum Level of Antiphospholipid Antibodies and Homocysteine in Patients with Pemphigus Vulgaris and Healthy Subjects: A Case-Control Study

Introduction: Pemphigus vulgaris is an autoimmune blistering disease of the skin and mucous membrane. Antiphospholipid antibodies are a group of autoantibodies found in patients with autoimmune diseases. Due to the risk for thrombotic events in autoimmune diseases, we decided to evaluate the correlation between pemphigus vulgaris and predictive elements of atherothrombosis including antiphospho...

متن کامل

Elevated Levels of Interleukin-23 in Sera of Patients with Pemphigus Vulgaris

Background: Pemphigus vulgaris, a chronic mucocutaneous disease, is the most prevalent type of pemphigus which manifests with development of bullae and erosions on skin and mucosal membranes. Objectives: To investigate the potential role of IL-23 in pemphigus vulgaris. Methods: In this study, 30 patients with pemphigus vulgaris and 30 healthy individuals were selected according to inclusion and...

متن کامل

Quality of life evaluation in patients with pemphigus vulgaris

Background: Pemphigus is a rare autoimmune disease causedby autoantibodies against desmoglein. It clinically presents withpainful blisters and erosions on the skin and mucous membranes.Few studies have been conducted on the quality of life inpemphigus patients which have all indicated the strong impactof the disease on emotional and physical status of the patients.According to evident differenc...

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

برای دانلود 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

عنوان ژورنال:
  • Journal of immunology

دوره 172 10  شماره 

صفحات  -

تاریخ انتشار 2004