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鉴定人26-kD蛋白,即干扰素β2(IFN-β2),为白细胞介素1和肿瘤坏死因子诱导产生的一种B细胞杂交瘤/浆细胞瘤生长因子。

Identification of the human 26-kD protein, interferon beta 2 (IFN-beta 2), as a B cell hybridoma/plasmacytoma growth factor induced by interleukin 1 and tumor necrosis factor.

作者信息

Van Damme J, Opdenakker G, Simpson R J, Rubira M R, Cayphas S, Vink A, Billiau A, Van Snick J

出版信息

J Exp Med. 1987 Mar 1;165(3):914-9. doi: 10.1084/jem.165.3.914.

Abstract

A factor that promotes the growth of certain B cell hybridomas and of plasmacytomas is shown to be produced by normal human fibroblasts and by a line of human osteosarcoma cells (MG-63) after treatment with IL-1 or TNF. The hybridoma-plasmacytoma growth factor (HPGF) is identified with a 26 kD protein whose mRNA was previously shown to be induced in the same cells by the same inducers. First, poly(A)-rich RNA extracted from IL-1-treated cells could be enriched in HPGF-mRNA content by hybridization to 26 kD cDNA. Second, MG-63-derived HPGF purified to electrophoretic homogeneity was subjected to amino acid sequence analysis, whereby the NH2-terminal sequence was found to match the nucleotide sequence of a 26 kD cDNA clone.

摘要

已表明,一种促进某些B细胞杂交瘤和浆细胞瘤生长的因子是由正常人成纤维细胞以及一株人骨肉瘤细胞(MG-63)在经白细胞介素-1(IL-1)或肿瘤坏死因子(TNF)处理后产生的。杂交瘤-浆细胞瘤生长因子(HPGF)被鉴定为一种26 kD的蛋白质,其信使核糖核酸(mRNA)先前已表明可由相同的诱导剂在相同的细胞中诱导产生。首先,从经IL-1处理的细胞中提取的富含多聚腺苷酸(poly(A))的RNA,通过与26 kD互补脱氧核糖核酸(cDNA)杂交,可使HPGF-mRNA含量得到富集。其次,将纯化至电泳纯的MG-63来源的HPGF进行氨基酸序列分析,结果发现其氨基末端序列与一个26 kD cDNA克隆的核苷酸序列相匹配。

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