cytokine;
signal transduction;
STAT;
knockout mice;
D O I:
10.1016/S1359-6101(00)00005-8
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:
STAT (signal transducers and activators of transcription) family, consisting of seven members, is involved in cytokine signal transduction. Biologic;ll roles of each STAT family protein have now been elucidated through studies of gene targeted mice. Stat1 knockout mice are defective in interferon-mediated functions. Stat4 and Stat6 knockout mice show defective responses to IL-12. and IL-4, respectively. Analyses of Stat5a and Stat5b knockout mice reveal important roles in prolactin-mediated mammary gland development and growth hormone-mediated induction of sexual dimorphism, respectively. Conditional knockout study of Stat3 demonstrates its critical roles in cytokine-mediated functions in several tissues, including T cells, macrophages, skin, and mammary gland. (C) 2000 Elsevier Science Ltd. All rights reserved.