Target intelligence / Profile preview

I-Ag7

Target
I-Ag7
Molecular classification
MHC class II molecule, Receptor
01

Overview

I-Ag7 is a murine MHC class II molecule strongly associated with susceptibility to type 1 diabetes in NOD mice. It presents peptides derived from pancreatic beta cells to CD4+ T cells, initiating autoreactive immune responses. Its unique structural features, particularly polymorphisms in the beta chain (His56/Ser57), alter its peptide binding specificity, favoring peptides with acidic residues at P9 and enhancing its interaction with diabetogenic T cell receptors.

Other names
ag7 antigenH2-Abg7
02

Mechanism of action

Modulation of T cell activation through altered peptide presentation

03

Biological functions

Antigen presentationT cell activationImmune response
04

Disease associations

Type 1 diabetesAutoimmunity
05

Safety considerations

Potential for broad immunosuppression if targeted systemicallyRisk of exacerbating other autoimmune conditionsComplex interplay with other MHC molecules

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