Dietary Antigen Recognition in Childhood Immune Tolerance
Food allergies are a growing public health concern, affecting millions of children worldwide. Severe allergic reactions, such as anaphylaxis, can be life-threatening and require immediate medical attention. Children with food allergies must constantly avoid certain foods, limiting their diet and impacting their quality of life. Despite the increasing prevalence of food allergies, we still do not fully understand how the immune system distinguishes between safe foods and harmful substances.
The immune system has built-in mechanisms to prevent unnecessary reactions to harmless proteins in food. This process, called oral tolerance, allows the immune system to recognize dietary proteins without triggering an inflammatory response. Regulatory T cells (Tregs) play a key role in maintaining oral tolerance by suppressing immune reactions that could otherwise lead to food allergies. However, the exact dietary proteins that stimulate Tregs and promote immune tolerance remain unknown. Most studies on oral tolerance rely on artificial models that do not fully capture how the immune system interacts with a natural diet.
Our research seeks to identify the food-derived antigens that activate Tregs and promote immune tolerance during early life. By mapping how specific proteins in the diet influence immune development, our study has the potential to transform how we prevent and treat food allergies. These findings could lead to new dietary guidelines or therapeutic strategies that help children safely tolerate common food allergens, improving their long-term health and quality of life