Screening and analysis of bioactive compounds with biofingerprinting chromatogram analysis of traditional Chinese medicines targeting DNA by microdialysis/HPLC.
Biofingerprinting chromatogram analysis, which is defined as the comparison of fingerprinting chromatograms of the extract of traditional Chinese medicines (TCMs) before and after the interaction with biological systems (DNA, protein, cell, etc.), was proposed for screening and analysis of the multiple bioactive compounds in TCMs. A method of microdialysis sampling combined with high performance liquid chromatography (HPLC) was applied to the study of DNA-binding property for the extracts of TCMs. Seven compounds were found to bind to calf thymus DNA (ct-DNA) from the TCMs of Coptis chinensis Franch (Coptis), but only three ones from Phellodendron amurense Rupr. (Phellodendron) and none from Sophoraflavescens Ait. (Sophora) to bind to ct-DNA, respectively. Three of them were identified as berberine, palmatine and jatrorrhizine and their association constants (K) to ct-DNA were determined by microdialysis/HPLC. Competitive binding behaviors of them to ct-DNA were also investigated.
National Chromatographic R&A Centre, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.
Xingye
X
Su
Liang
L
Kong
Xin
X
Li
Xueguo
X
Chen
Ming
M
Guo
Hanfa
H
Zou
D000818:Animals; D002417:Cattle; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D004247:DNA / Q000187:drug effects*; D004365:Drugs, Chinese Herbal / Q000032:analysis / Q000494:pharmacology*; D008516:Medicine, Chinese Traditional; D017551:Microdialysis / Q000379:methods*
D004365:Drugs, Chinese Herbal; D004247:DNA