sst5 somatostatin receptor mRNA induction by mitogenic activation of human T-lymphocytes

被引:23
作者
El Ghamrawy, C [1 ]
Rabourdin-Combe, C [1 ]
Krantic, S [1 ]
机构
[1] Ecole Normale Super Lyon, Biol Cellulaire & Mol Lab, UMR 49, F-69364 Lyon 07, France
关键词
expression pattern of SRIF receptor subtypes; TPA/PHA; activation of T-lymphocytes;
D O I
10.1016/S0196-9781(99)00036-4
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
SRIF has neuro-immunomodulatory actions on immune cells, including T-lymphocytes. Molecular mechanisms involved in these actions were studied by RT-PCR analysis of SRIF receptor expression in resting and mitogen-activated human T-lymphocytes. Our results point to the mitogen-associated induction of sst5 receptor subtype. Conversely, sst3 receptor appears constitutively expressed in both activity states. Assessment of biologic actions of SRIF14 in activated T-lymphocytes indicates that, in nanomolar concentration range, this peptide moderately inhibits mitogen-induced IL-2 secretion. Nevertheless, T-lymphocyte proliferation is not inhibited in the presence of SRIF14 but is even slightly increased. Altogether these data suggest a complex mechanism of SRIF neuro-immunomodulatory actions. (C) 1989 Elsevier Science Inc. All rights reserved.
引用
收藏
页码:305 / 311
页数:7
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