Creating Hypoallergenic and Low Antinutritional Soybeans through CRISPR/Cas12a-Mediated Multiplex Gene Editing.

Soybean protein is a valuable plant-based nutrition source for food. However, allergens and antinutritional factors like Gly Bd 30k (P34), Kunitz trypsin inhibitor (KTI), and soybean agglutinin (LE) pose risks. In this study, we employed the CRISPR/Cas12a system to generate hypoallergenic and low antinutritional soybean lines without agronomic traits penalties. The edited lines exhibited markedly reduced levels and enzymatic activity of trypsin inhibitors, as well as soybean agglutinin content. Feeding mice with these edited soybeans, deficient in P34, KTI, and LE proteins, significantly alleviated allergenic responses. This research provides a promising resource of hypoallergenic and low antinutritional soybeans for applications in food production, animal feed, and immunotherapy.