PROTEIN-SYNTHESIS-DEPENDENT INDUCTION OF ANNEXIN-I BY GLUCOCORTICOID

被引:38
作者
WONG, WT [1 ]
FROST, SC [1 ]
NICK, HS [1 ]
机构
[1] UNIV FLORIDA,COLL MED,DEPT BIOCHEM & MOLEC BIOL,GAINESVILLE,FL 32610
关键词
D O I
10.1042/bj2750313
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
We demonstrate that annexin I/lipocortin I (lipo I) gene expression is regulated by dexamethasone (DEX) in mouse 3T3-L1 fibroblasts and LA-4 lung epithelial cells. We have characterized this induction further in 3T3-L1 fibroblasts. At 24 h after addition of DEX, the levels of lipo I mRNA and protein increased 5-fold and 1.5-fold respectively. Time-course experiments revealed that the induction was delayed by 2-4 h after DEX addition. Half-maximal induction of both lipo I mRNA and protein was achieved with 10 nM-DEX. Both actinomycin D and cycloheximide blocked the DEX effect on lipo I mRNA expression. These results indicate that the induction of lipo I by DEX has a transcriptional component and requires protein synthesis de novo.
引用
收藏
页码:313 / 319
页数:7
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