Growth of human breast cancer cell lines is inhibited by the somatostatin analog BIM23014.

Growth of human breast cancer cell lines is inhibited by the somatostatin analog BIM23014.
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生长抑素类似物 BIM23014 可抑制人乳腺癌细胞系的生长。

DOI:
10.1210/endo-129-1-323
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发表时间:
1991
期刊:
影响因子:
4.8
通讯作者:
Luchien Israël
Luchien Israël
中科院分区:
医学2区
文献类型:
--
作者:
Gregoire Prevost;Eve Foehrlé;François Thomas;Isabelle Pihan;Nathalie Veber;Anna Starzec;Luchien Israël

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生长抑素已被证明可以降低参与调节人类乳腺细胞生长的各种激素和生长因子的血浆水平。在本研究中,我们研究了生长抑素八肽类似物BIM 23014调节五种人乳腺细胞系HBL 100,Hs 578 T,MDAMB 231,T47 D和MCF 7体外生长的能力。BIM 23014以剂量相关的方式抑制两种类固醇依赖性细胞系MCF 7和T47 D的生长。这种抑制作用仅在MCF 7和T47 D细胞在含有类固醇耗尽血清的培养基中培养时观察到。能够在无血清培养基中生长的MCF 7变体的生长也被BIM 23014抑制,表明这种抑制不需要血清因子。在无血清培养基中,在用BIM 23014处理之前或期间添加雌二醇消除了其对细胞生长的抑制作用。包括时间过程、竞争性抑制和碘化BIM 23014与其受体交联在内的研究揭示了碘化BIM 23014与MCF 7细胞的特异性结合,并在十二烷基硫酸钠-聚丙烯酰胺凝胶电泳中显示出单一的57,000摩尔重量蛋白带。这些结果支持以下假设:在无雌二醇条件下,BIM 23014通过其自身的受体抑制人乳腺癌类固醇受体阳性细胞的生长。
Somatostatin has been shown to lower plasma levels of various hormones and growth factors involved in regulation of the growth of human breast cells. In the present study we examined the ability of the somatostatin octapeptide analog BIM23014 to modulate the in vitro growth of five human breast cell lines: HBL100, Hs578T, MDAMB231, T47D, and MCF7. BIM23014 inhibited the growth of the two steroid-dependent cell lines, MCF7 and T47D, in a dose-related manner. This inhibitory effect was only observed when MCF7 and T47D cells were cultivated in medium containing steroid-depleted serum. The growth of a MCF7 variant capable of growth in serum-free medium was also inhibited by BIM23014, indicating that serum factors are not required for this inhibition. In the serum-free medium, the addition of estradiol before or during treatment with BIM23014 abolished its inhibitory effects on cell growth. The studies including time course, competitive inhibition, and cross-linking of iodinated BIM23014 to its receptor revealed a specific binding on MCF7 cells and showed a single 57,000 mol wt protein band in sodium dodecyl sulfate-polyacrylamide gel electrophoresis. These results support the hypothesis that BIM23014 inhibits the growth of steroid-receptor positive cells of human breast cancers through its own receptor in estradiol-free conditions.
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DOI: 10.1210/endo-126-6-3131
发表时间: 1990
期刊: Endocrinology
影响因子: 4.8
作者:
Tsuzaki,S;Moses,AC
通讯作者: Moses,AC
DOI: --
发表时间: 1988-12
期刊: Cancer research
影响因子: 11.2
作者:
A. Schally
通讯作者: A. Schally
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DOI: --
发表时间: 1989
期刊: The Journal of biological chemistry
影响因子: --
作者:
Sreedharan,SP;Kodama,KT;Peterson,KE;Goetzl,EJ
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DOI: 10.1210/endo-125-2-948
发表时间: 1989
期刊: Endocrinology
影响因子: 4.8
作者:
Murthy,KK;Srikant,CB;Patel,YC
通讯作者: Patel,YC
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DOI: 10.1073/pnas.85.3.890
发表时间: 1988
影响因子: 11.1
作者:
Kadar,T;Redding,TW;Ben-David,M;Schally,AV
通讯作者: Schally,AV