Gluten peptides

Gluten peptides are protein fragments resulting from the incomplete digestion of gluten, a structural protein complex found in wheat, barley, and rye. These peptides are characterized by a high content of proline and glutamine residues, which makes them highly resistant to degradation by human gastric, pancreatic, and intestinal proteases (NIH, 2023). In genetically susceptible individuals (those carrying HLA-DQ2 or HLA-DQ8), specific immunogenic gluten peptides, such as the 33-mer gliadin fragment, trigger an inappropriate immune response upon entering the intestinal lamina propria (StatPearls, 2023). This response is often amplified by the enzyme tissue transglutaminase, which deamidates the peptides, enhancing their binding to MHC class II molecules and subsequent T-cell activation. Therapeutic interventions targeting these peptides aim to neutralize their toxicity through enzymatic cleavage (using oral glutenases like Latiglutenase or TAK-062) or physical sequestration (using agents like BL-7010), thereby preventing the downstream inflammatory cascade that leads to Celiac disease symptoms and mucosal damage (Pyle et al., 2022). These approaches are primarily intended as adjunctive treatments to a gluten-free diet to protect against accidental cross-contamination.

Other names

Gliadin peptidesGluten-derived peptidesImmunogenic gluten peptidesProlamins

Enzymatic degradation of immunogenic epitopes or physical sequestration to prevent intestinal absorption and immune activation.