Modulation of cyclic AMP accumulation in GH3 cells by a phorbol ester and thyroliberin.

Modulation of cyclic AMP accumulation in GH3 cells by a phorbol ester and thyroliberin.
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通过佛波酯和甲状腺释放素调节 GH3 细胞中环 AMP 的积累。

DOI:
10.1016/0006-291x(85)91976-x
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发表时间:
1985
影响因子:
3.1
通讯作者:
B. Brown
B. Brown
中科院分区:
生物学4区
文献类型:
--
作者:
L. Quilliam;P. Dobson;B. Brown

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4佛波醇-12,13-二丁酸酯(βphorbol-12,13-dibuyrate,PDBu)在异丁基甲基黄嘌呤存在的条件下刺激GH3垂体瘤细胞内环磷酸腺苷的积聚。这种效应在细胞与霍乱或百日咳毒素预先孵育后持续存在。相反,PDBu可剂量依赖性地抑制血管活性肠肽(VIP)刺激的环状AMP聚集(IC50=5.1 nm)。ThyroLiberin(TRH)对PDBu诱导的环磷酸腺苷(AMP)积聚有类似的非相加刺激作用,但不抑制VIP的刺激作用。这些结果表明,TRH可能通过蛋白激酶C刺激环磷酸腺苷的积累,PDBu和TRH对腺苷环化酶的刺激可能发生在鸟嘌呤核苷酸结合调节蛋白NsN和Ni的远端。
4β phorbol-12,13-dibutyrate (PDBu) stimulated cyclic AMP accumulation in GH3pituitary tumour cells in the presence of isobutylmethylxanthine. This effect persisted after preincubation of cells with cholera or pertussis toxins. In contrast, vasoactive intestinal polypeptide (VIP)-stimulated cyclic AMP accumulation was inhibited by PDBu in a dose dependent fashion (IC50=5.1nM). Thyroliberin (TRH) had a similar, but non-additive, stimulatory effect on cyclic AMP accumulation with PDBu, however it did not inhibit VIP stimulation. These results suggest that TRH may stimulate cyclic AMP accumulation through protein kinase C and that stimulation of adenylate cyclase by PDBu and TRH may occur distal to the guanine nucleotide binding regulatory proteins, Nsand Ni.
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DOI: 10.1016/0006-291x(82)91048-8
发表时间: 1982
影响因子: 3.1
作者:
Backer,JM;Boersig,MR;Weinstein,IB
通讯作者: Weinstein,IB
促甲状腺激素释放激素通过脂质连接、蛋白激酶 C 介导的途径快速激活 GH3 垂体细胞中的蛋白质磷酸化。
DOI: --
发表时间: 1984
期刊: The Journal of biological chemistry
影响因子: --
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DOI: 10.1016/0006-291x(84)90772-1
发表时间: 1984
影响因子: 3.1
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