The First Syntheses of GLA-60 Positional Isomers and Their Biological Activities.

The First Syntheses of GLA-60 Positional Isomers and Their Biological Activities.
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GLA-60 位置异构体的首次合成及其生物活性。

DOI:
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发表时间:
1997
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影响因子:
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通讯作者:
M. Nishijima
M. Nishijima
中科院分区:
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文献类型:
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作者:
M. Shiozaki;M. Arai;W. M. Macindoe;T. Mochizuki;Takanori Wakabayashi;S. Kurakata;T. Tatsuta;H. Maeda;M. Nishijima

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合成了六种 GLA-60 位置异构体(8、14、14'、20、26 和 26')以研究其生物活性。化合物8对人单核细胞U937细胞的TNFα产生表现出强效激动活性,而化合物26和26'表现出轻微的激动活性。浓度为 10 μM 的化合物 8 的 TNFα 产量(% 对照;10 ng ml−1 LPS = 100)为 611,相同浓度的脂质 A 的 TNFα 产量为 651。相比之下,二氟化化合物 14、14' 和 20 对 TNFα 产量几乎没有显示出激动活性。化合物8以及化合物26和26'均未表现出拮抗活性。另一方面,二氟化化合物14、14'和20显示出有效的拮抗活性,并剂量依赖性地抑制LPS诱导的TNFα产生。化合物 14' (10 μM) 抑制超过 80% 的 LPS 诱导的 TNFα 产生。
Six GLA-60 positional isomers (8, 14, 14′, 20, 26, and 26′) were synthesized to investigate their biological activities. Compound 8 exhibited potent agonistic activity, while compounds 26 and 26′ exhibited slight agonistic activity on TNFα production toward human monoblastic U937 cells. TNFα production (% control; 10 ng ml−1 of LPS = 100) of compound 8 in the concentration of 10 μM was 611, and that of lipid A in the same concentration was 651. In contrast, the difluorinated compounds 14, 14′, and 20 showed little agonistic activity on TNFα production. And neither compound 8 nor compounds 26 and 26′ showed antagonistic activity. On the other hand, the difluorinated compounds 14, 14′, and 20 showed potent antagonistic activity, and inhibited the LPS-induced TNFα production dose-dependently. Compound 14′ (10 μM) inhibited in excess of 80% of the LPS-induced TNFα production.
DOI: 10.1016/s0021-9258(18)55023-7
发表时间: 1991-10
期刊: The Journal of biological chemistry
影响因子: --
作者:
Douglas T. GolenbockSQll;Randolph;HamptonIIQ;N. Qureshi;K. Takayama;Christian R. H. RaetzQ
通讯作者: Douglas T. GolenbockSQll;Randolph;HamptonIIQ;N. Qureshi;K. Takayama;Christian R. H. RaetzQ