INVOLVEMENT OF ANTIPAIN-SENSITIVE PROTEASE ACTIVITY IN SUPPRESSION OF UV-MUTAGENICITY BY HUMAN INTERFERON-ALPHA

被引:16
作者
ISOGAI, E [1 ]
SUZUKI, N [1 ]
机构
[1] CHIBA UNIV, SCH MED, DEPT BIOCHEM, CHUO KU, CHIBA 260, JAPAN
来源
MUTATION RESEARCH LETTERS | 1994年 / 325卷 / 2-3期
关键词
HUMAN CELL; MUTATION; INTERFERON-ALPHA; PROTEASE; ANTIPAIN;
D O I
10.1016/0165-7992(94)90005-1
中图分类号
Q3 [遗传学];
学科分类号
071007 ; 090102 ;
摘要
To study the relationship between the transient elevation of protease activity and hypomutability observed in hypermutable human RSa cells pretreated with human interferon (HuIFN)-alpha and then irradiated with far-ultraviolet light (UV), protease inhibitors capable of specifically inhibiting the activity were investigated. Of ten inhibitors tested, antipain showed the greatest inhibitory effect. Antipain also prevented the suppression of UV-mutagenicity by HuIFN-alpha in RSa and xeroderma pigmentosum-derived fibroblast cells, as shown by culturing cells in medium containing antipain immediately after UV exposure and evaluating the generation of clones resistant to ouabain- or 6-thioguanine-mediated cytotoxicity. Thus, an antipain-sensitive protease may be involved in the hypomutability induced by HuIFN-alpha.
引用
收藏
页码:81 / 85
页数:5
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