ヤマウチ　アキラ   Akira Yamauchi   山内　明    所属   川崎医科大学  医学部 基礎医学　生化学    職種   教授
論文種別	原著
言語種別	英語
査読の有無	査読あり
表題	Monoclonal antibody 7D5 recognizes the R147 epitope on the gp91phox , phagocyte flavocytochrome b558 large subunit.
掲載誌名	正式名：Microbiology and Immunology 略　 称：Microbiol Immunol.
掲載区分	国外
出版社	John Wiley & Sons, Inc.
巻・号・頁	62(4),pp.269-280
著者・共著者	Kawai C, Yamauchi A, Kuribayashi F
担当区分	2nd著者
発行年月	2018/04
概要	Human phagocyte flavocytochrome b558 (Cyt b), the catalytic center of nicotinamide adenine dinucleotide phosphate oxidase, consists of a heavily glycosylated large subunit (gp91phox ; Nox2) and a small subunit (p22phox ). Cyt b is a membrane-spanning complex enzyme. Chronic granulomatous disease (CGD) is predominantly caused by a mutation in the CYBB gene encoding gp91phox on the X-chromosome. Because the phagocytes of patients with CGD are not able to generate the superoxide anion, these patients are susceptible to severe infections that can be fatal. It has been suggested that the extracellular region of gp91phox is necessary for and critical to forming the epitope of mAb 7D5 and that 7D5 provides a useful tool for rapid screening of X-linked CGD by FACS. To further elucidate the mAb 7D5 epitope on human gp91phox , chimeric DNA expressed human and mouse gp91phox recombinant protein were constructed. The fusion proteins were immunostained for mAb 7D5 and analyzed by FACS and western blot analysis. The 143 ELGDRQNES151 region was found to reside at the extracellular surface on human gp91phox and to be an important epitope for the interaction with mAb 7D5, as analyzed by FACS analysis. In particular, amino acid R147 is a unique epitope on the membrane-associated Cyt b for mAb 7D5. In conclusion, it is proposed that FACS analysis using mAb 7D5 is a valuable tool for early diagnosis of CGD.
DOI	10.1111/1348-0421.12584
PMID	29573449