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Qingyue Wang,Jun Morita,Xiumin Gong,Shinichi Nakamura,Miho Suzuki,Senlin Lu,Kazuhiko Sekiguchi,Takuya Nakajima,Daisuke Nakajima,Makoto Miwa 한국대기환경학회 2012 Asian Journal of Atmospheric Environment (AJAE) Vol.6 No.1
In this study, we characterized the physical form of allergenic Cry j 1 in the urban atmosphere. Through an immunofluorescence antibody method, we showed that allergenic Cry j 1 exists as fine particles (‹1.1μm). To determine Cry j 1 concentrations and its particle size distribution, we used the ELISA method to confirm that most Cry j 1 exists as fine particles in the urban atmosphere and is found at high concentrations on fine day next to rainy day. Furthermore,we evaluated Cry j 1 denaturation by using the Biacore J system based on the surface plasmon resonence (SPR) principle and sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE). We showed that the dissociation constant (KD) of Cry j 1 that has been exposed to urban polluted air is lower (1.76×10-14 M) than that of Cry j 1 (1.32×10-9-3.37×10-9 M) of original pollen grains that has not been exposed to air pollutants. Cry j 1 turns into low molecular weight proteins by reacting with various acidic solutions. In sum, we showed that allergenic Cry j 1exists as fine particles that can deposit in the lower respiratory tract. This finding clarifies the relationship between Japanese cedar pollinosis and air pollutants.