CHANGES IN LIPOXYGENASE ACTIVITIES IN HUMAN ERYTHROLEUKEMIA (HEL) CELLS DURING DIOSGENIN-INDUCED DIFFERENTIATION

被引：53

作者：

NAPPEZ, C ^{[1
]}

LIAGRE, B ^{[1
]}

BENEYTOUT, JL ^{[1
]}

机构：

[1] FAC MED & PHARM LIMOGES,CNRS,URA 1485,F-87025 LIMOGES,FRANCE

来源：

CANCER LETTERS | 1995年 / 96卷 / 01期

关键词：

HEL CELLS; DIOSGENIN; DIFFERENTIATION; LIPOXYGENASES;

D O I：

10.1016/0304-3835(95)03923-K

中图分类号：

R73 [肿瘤学];

学科分类号：

100214 ;

摘要：

A human erythroleukemia (HEL) cell line was used as a model to study dynamic changes in human 12-, 15-, 5-lipoxygenases, five lipoxygenase activating protein (FLAP), and leukotriene A(4) (LTA(4)) hydrolase gene expression during megakaryocytic differentiation induced by diosgenin (Beneytout, J.L, Nappez, C., Leboutet, M.J. and Malinvaud, G., Biochem. Biophys. Res. Commun., 207 (1995) 398-404). The study was performed at the transcriptional level: 12- and 5-lipoxygenase mRNAs, FLAP mRNA and LTA(4) hydrolase mRNA were detected before and after diosgenin treatment in HEL cells while 15-lipoxygenase mRNA was undetected. When HEL cells were incubated with arachidonic acid, 5-, 12-, 15-hydroxyeicosatetraenoic acids (HETE) and LTC(4) were synthesized. In contrast, the diosgenin treatment induced the suppression of 12-lipoxygenase activity and only 5-, 15-HETEs and LTC(4) were synthesized.

引用

页码：133 / 140

页数：8

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