Proteomic analysis of known and candidate rice allergens between non-transgenic and transgenic plants

作者：Satoh Rie; Nakamura Rika; Komatsu Akira; Oshima Masahiro; Teshima Reiko^*

来源：Regulatory Toxicology and Pharmacology, 2011, 59(3): 437-444.

DOI：10.1016/j.yrtph.2011.01.008

• Rice
• Non-transgenic
• Transgenic
• IgE-binding protein
• Allergen
• Proteomics

Salt-soluble proteins extracted from non-transgenic and transgenic rice were evaluated for the presence of known and potential allergens by proteomic techniques. The salt-soluble proteins were extracted, separated by 1D and 2D electrophoresis, and analyzed by Western blotting. 1D immunoblot analysis with patients' sera revealed few qualitative differences between the IgE-binding proteins of the non-transgenic and transgenic rice. 1D immunoblot with antigen-specific-animal sera revealed no qualitative or quantitative differences in two known allergens, RAG2 and glyoxalase I. between non-transgenic and transgenic rice. Multiple spots containing known and novel IgE-binding proteins were detected among the salt-soluble proteins of non-transgenic rice by 20 immunoblotting. Two globulin-like proteins, a 52 kDa protein and a 63 kDa protein, were identified as novel IgE-binding proteins that are candidates for rice allergens. These globulin-like proteins were homologous to Cupin superfamily allergens. Quantitative analysis of 19, 52, and 63 kDa globulins with protein-specific-animal sera showed no significant differences in the expression of these proteins between the transgenic rice and non-transgenic rice. These results indicate that none of the known or novel endogeneous IgE-binding proteins detected in this study appear to be altered by genetic modification.

• 出版日期2011-4