Lipophilic 2,5-disubstituted pyrroles from the marine sponge Mycale sp. inhibit mitochondrial respiration and HIF-1 activation.
Lipophilic 2,5-disubstituted pyrroles from the marine sponge Mycale sp. inhibit mitochondrial respiration and HIF-1 activation.
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DOI:
10.1021/np900444m
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发表时间:
2009-11
影响因子:
5.1
通讯作者:
Nagle, Dale G.
中科院分区:
文献类型:
--
作者:
Mao, Shui-Chun;Liu, Yang;Morgan, J. Brian;Jekabsons, Mika B.;Zhou, Yu-Dong;Nagle, Dale G.
The lipid extract of the marine sponge Mycale sp. inhibited the activation of hypoxiainducible factor-1 (HIF-1) in a human breast tumor T47D cell-based reporter assay. Bioassay-guided isolation and structure elucidation yielded 18 new lipophilic 2,5-disubstituted pyrroles, and eight structurally related known compounds. The active compounds inhibited hypoxia-induced HIF activation with moderate potency (IC50 values < 10 μM). Mechanistic studies revealed that the active compounds suppressed mitochondrial respiration by blocking NADH-ubiquinone oxidoreductase (complex I) at concentrations that inhibited HIF-1 activation. Under hypoxic conditions, reactive oxygen species produced by mitochondrial complex III are believed to act as a signal of cellular hypoxia that leads to HIF-1α protein induction and activation. By inhibiting electron transport (or delivery) to complex III under hypoxic conditions, lipophilic Mycale pyrroles appear to disrupt mitochondrial ROS-regulated HIF-1 signaling.
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影响因子:
56.9
作者:
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通讯作者:
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影响因子:
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DOI:
10.1073/pnas.0504249102
发表时间:
2005-07-26
影响因子:
11.1
作者:
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通讯作者:
Pelletier, J
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2.1
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DOI:
10.1080/10575639908048787
发表时间:
1999-01-01
期刊:
NATURAL PRODUCT LETTERS
影响因子:
--
作者:
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通讯作者:
Gómez, M