Identification and Immunological Characterization of a Novel 40-kDa Protein Linked to CD98 Antigen

Cell Structure and Function

Akari Yoshimura¹  Takemi Enomoto¹  Kiyomi Satoh-Ueno¹  Takashi Masuko¹  Yasuhiro Matsumoto¹  Yoshiyuki Hashimoto² 

[1] Molecular Cell Biology Laboratory, Graduate School of Pharmaceutical Sciences, Tohoku University, Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan;Sasaki Institute, 2-2 Kanda-Surugadai, Chiyoda-ku, Tokyo 101-0062, Japan

关键词: CD98;    GP125 heavy chain (HC);    GP125 light chain (LC);    monoclonal antibody (mAb);    amino-acid transporter;    malignant transformation;   

DOI  :  10.1247/csf.24.217

学科分类：分子生物学，细胞生物学和基因

来源: Japan Society for Cell Biology

【 摘 要 】

References(29)Cited-By(3)Monoclonal antibodies (mAbs) were obtained from hybridoma clones established by cell fusion between mouse myelona cells and spleen cells from a mouse immunized against an affinity-purified 40-kDa component of rat 125-kDa glycoprotein (GP125). Two mAbs designated as 3F2 and 6B4 detected a 40-kDa and a 125-kDa band under reducing and nonreducing conditions, respectively, in extracts prepared from rat, mouse and human tumor cells. Association of the 40-kDa protein with CD98 was revealed by sandwich-type enzyme-linked immuosorbent assay. The two mAbs were strongly reactive with various tumor cells and activated lymphocytes, but were only weakly reactive with resting lymphocytes. Confocal microscopy indicated colocalization of CD98 and the 40-kDa protein defined with 3F2 and 6B4 at the cell surface and perinuclear regions. On immunohistochemical analysis of frozen sections of rat tongue, the anti-rat CD98 mAb B3 selectively stained the basal layer and 3F2 stained the upper epithelial part in addition to the basal layer, indicating the existence of CD98-unlinked 40-kDa protein.

【 授权许可】

Unknown