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Structure-activity relationship of Baifuzi-cerebrosides on BKCa channel activation
被引:7
作者:
Zhou, Li
[1
]
Zhang, Yu-Jiao
[1
]
Gao, Li-Juan
[2
]
Ye, Ying
[2
]
Qi, Jian-Hua
[2
]
Qi, Zhi
[1
]
机构:
[1] Xiamen Univ, Dept Basic Med Sci, Coll Med, Xiamen 361102, Peoples R China
[2] Zhejiang Univ, Coll Pharmaceut Sci, Hangzhou 310058, Zhejiang, Peoples R China
基金:
中国国家自然科学基金;
关键词:
Baifuzi-cerebroside;
Ischemic stroke;
BKCa channel;
RECEPTOR POTENTIAL CHANNELS;
CA2+-ACTIVATED K+ CHANNELS;
FATTY-ACIDS;
POTASSIUM CHANNELS;
ISCHEMIC STROKE;
ION CHANNELS;
CONDUCTANCE;
MODULATION;
BETA;
REPOLARIZATION;
D O I:
10.1016/j.ejmech.2014.01.007
中图分类号:
R914 [药物化学];
学科分类号:
100701 ;
摘要:
Our previous study reported that a mixture of cerebrosides from traditional Chinese medicine Baifuzi could activate BKCa channel. It is curious to know the effect of each single cerebroside on the channel. Here we isolated 5 pure cerebrosides from the mixture and determined their chemical structures. The most potent one increased the single channel open probability 6 folds with EC50 value of 1.0 mu M. The structure activity relationship revealed that acyl chain length of cerebrosides has potent effect, while configuration of double bond at C8-C9 on their long chain base has weak effect on the channel activity. Thus, this research provides a guide for design and synthesis of a lead cerebroside with more potent effect on the BKCa channel. (C) 2014 Elsevier Masson SAS. All rights reserved.
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页码:301 / 307
页数:7
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