Development and Potential Use of a Monoclonal Antibody to the Lipopolysaccharide of Pantoea agglomerans (IP-PA1)

Background: The lipopolysaccharide of Pantoea agglomerans (IP-PA1) has been shown to be effective and safe in the prevention of various diseases, such as bacterial or viral infection, lifestyle-related diseases, when administered transdermally or orally. To clarify the mechanisms of the preventive or therapeutic effect induced by IP-PA1, we tried to establish a monoclonal antibody to detect IP-PA1. The enzyme-linked immunosorbent assay (ELISA) was used to measure the amount of IP-PA1. Materials and Methods: Antibodies were raised by immunization using heat-killed Pantoea agglomerans and screening was conducted to isolate monoclonal antibodies specific to IP-PA1. Results: Six kinds of IP-PA1 specific monoclonal antibodies with different epitopes were established. An ELISA using the monoclonal antibodies was successfully established which could specifically detect IP-PA1. Conclusion: By use of this ELISA, the staple food content and pharmacodynamic analysis of IP-PA1 could be conveniently estimated.