Over the past 30 years, China has significantly improved the drug development environment by establishing a series of policies for the regulation of new drug approval. The regulatory system for new drug evaluation and...Over the past 30 years, China has significantly improved the drug development environment by establishing a series of policies for the regulation of new drug approval. The regulatory system for new drug evaluation and registration in China was gradually developed in accordance with international standards. The approval and registration of TCM in China became as strict as those of chemical drugs and biological products. In this review, TCM-based new drug discovery and development are introduced according to the TCM classification of nine categories.展开更多
Aconiti Lateralis Radix Praeparata(Fuzi) is a commonly used traditional Chinese medicine in clinic for its potency in restoring yang and rescuing from collapse. Aconiti alkaloids, mainly including monoester-diterpenoi...Aconiti Lateralis Radix Praeparata(Fuzi) is a commonly used traditional Chinese medicine in clinic for its potency in restoring yang and rescuing from collapse. Aconiti alkaloids, mainly including monoester-diterpenoidaconitines(MDAs) and diester-diterpenoidaconitines(DDAs), are considered to act as both bioactive and toxic constituents. In the present study, a feasible, economical, and accurate HPLC method for simultaneous determination of six alkaloid markers using the Single Standard for Determination of Multi-Components(SSDMC) method was developed and fully validated. Benzoylmesaconine was used as the unique reference standard. This method was proven as accurate(recovery varying between 97.5%-101.8%, RSD < 3%), precise(RSD 0.63%-2.05%), and linear(R > 0.999 9) over the concentration ranges, and subsequently applied to quantitative evaluation of 62 batches of samples, among which 45 batches were from good manufacturing practice(GMP) facilities and 17 batches from the drug market. The contents were then analyzed by principal component analysis(PCA) and homogeneity test. The present study provided valuable information for improving the quality standard of Aconiti Lateralis Radix Praeparata. The developed method also has the potential in analysis of other Aconitum species, such as Aconitum carmichaelii(prepared parent root) and Aconitum kusnezoffii(prepared root).展开更多
Euphorbia kansui is a commonly used traditional Chinese medicine for the treatment of edema,pleural effusion,and asthma,etc.According to the previous researches,terpenoids in E.kansui possess various biological activi...Euphorbia kansui is a commonly used traditional Chinese medicine for the treatment of edema,pleural effusion,and asthma,etc.According to the previous researches,terpenoids in E.kansui possess various biological activities,e.g.,anti-virus,anti-allergy,antitumor effects.In this work,twenty five terpenoids were isolated from E.kansui,including thirteen ingenane-and eight jatrophane-type diterpenoids(with two new compounds,kansuinin P and Q)and four triterpenoids.Eighteen of them were analyzed by MTS assay for in vitro anticancer activity in five human cancer cell lines.Structure-activity relationship for 12 ingenane-type diterpenoids in colorectal cancer Colo205 cells were preliminary studied.Significant anti-proliferation activities were observed in human melanoma cells breast cancer MDA-MB-435 cells and Colo205 cells.More than half of the isolated ingenane-type diterpenoids showed inhibitory activities in MDA-MB-435 cells.Eight ingenane-and one jatrophane-type diterpenoids possessed much lower IC_(50) values in MDA-MB-435 cells than positive control staurosporine.Preliminary structure-activity relationship analysis showed that substituent on position 20 was important for the activity of ingenane-type diterpenoids in Colo205 cells and substituent on position 3 contributed more significant biological activity of the compounds than that on position 5 in both MDA-MB-435 and Colo205 cells.展开更多
Polysaccharides from numerous traditional Chinese medicines have been proven as the bioactive ingredients and are hence used as the quality control markers. However, the assessment criteria always show a poor specific...Polysaccharides from numerous traditional Chinese medicines have been proven as the bioactive ingredients and are hence used as the quality control markers. However, the assessment criteria always show a poor specificity, due to the lack of matic comparison among the analogous herbs. In the present study, two similar materials, namely sea-tangle and sargassum, were selected as the model herbs to develop more specific methods for quality control. Two well-established methods, determination of the total polysaccharides content and monosaccharides composition analysis, were both employed. Based upon the quantitative results, the evaluation criteria of the polysaccharides contents of not less than 2.0% and 1.7% were proposed for sea-tangle and sargassum, tively. Nine identical monosaccharide derivatives appeared on the HPLC chromatograms of the hydrolysis and derivatized solutions of the two drugs. Principal component analysis and orthogonal partial least squares discriminant analysis using the peak areas of monosaccharides derivatives as the variables were performed, and the results indicated that mannuronic acid and xylose with the opposite concentrations in the two drugs were the differential components. A discriminative criterion using the peak area ratio of these two monosaccharides derivatives was proposed for the qualitative identification. In conclusion, a more specific and quantitative quality control method was developed for sea-tangle and sargassum.展开更多
基金supported by the Twelfth Five-Year National Science and Technology Major Project(No.201409304-307-301)
文摘Over the past 30 years, China has significantly improved the drug development environment by establishing a series of policies for the regulation of new drug approval. The regulatory system for new drug evaluation and registration in China was gradually developed in accordance with international standards. The approval and registration of TCM in China became as strict as those of chemical drugs and biological products. In this review, TCM-based new drug discovery and development are introduced according to the TCM classification of nine categories.
基金financially supported by the project of Standardization of Traditional Chinese Medicines/Indigenous Drugs sponsored by Chinese Academy of Sciences(No.KSZD-EW-Z-004-01)
文摘Aconiti Lateralis Radix Praeparata(Fuzi) is a commonly used traditional Chinese medicine in clinic for its potency in restoring yang and rescuing from collapse. Aconiti alkaloids, mainly including monoester-diterpenoidaconitines(MDAs) and diester-diterpenoidaconitines(DDAs), are considered to act as both bioactive and toxic constituents. In the present study, a feasible, economical, and accurate HPLC method for simultaneous determination of six alkaloid markers using the Single Standard for Determination of Multi-Components(SSDMC) method was developed and fully validated. Benzoylmesaconine was used as the unique reference standard. This method was proven as accurate(recovery varying between 97.5%-101.8%, RSD < 3%), precise(RSD 0.63%-2.05%), and linear(R > 0.999 9) over the concentration ranges, and subsequently applied to quantitative evaluation of 62 batches of samples, among which 45 batches were from good manufacturing practice(GMP) facilities and 17 batches from the drug market. The contents were then analyzed by principal component analysis(PCA) and homogeneity test. The present study provided valuable information for improving the quality standard of Aconiti Lateralis Radix Praeparata. The developed method also has the potential in analysis of other Aconitum species, such as Aconitum carmichaelii(prepared parent root) and Aconitum kusnezoffii(prepared root).
基金supported by the National Natural Science Foundation of China(No.81073026)
文摘Euphorbia kansui is a commonly used traditional Chinese medicine for the treatment of edema,pleural effusion,and asthma,etc.According to the previous researches,terpenoids in E.kansui possess various biological activities,e.g.,anti-virus,anti-allergy,antitumor effects.In this work,twenty five terpenoids were isolated from E.kansui,including thirteen ingenane-and eight jatrophane-type diterpenoids(with two new compounds,kansuinin P and Q)and four triterpenoids.Eighteen of them were analyzed by MTS assay for in vitro anticancer activity in five human cancer cell lines.Structure-activity relationship for 12 ingenane-type diterpenoids in colorectal cancer Colo205 cells were preliminary studied.Significant anti-proliferation activities were observed in human melanoma cells breast cancer MDA-MB-435 cells and Colo205 cells.More than half of the isolated ingenane-type diterpenoids showed inhibitory activities in MDA-MB-435 cells.Eight ingenane-and one jatrophane-type diterpenoids possessed much lower IC_(50) values in MDA-MB-435 cells than positive control staurosporine.Preliminary structure-activity relationship analysis showed that substituent on position 20 was important for the activity of ingenane-type diterpenoids in Colo205 cells and substituent on position 3 contributed more significant biological activity of the compounds than that on position 5 in both MDA-MB-435 and Colo205 cells.
基金supported by the National High Technology Research and Development Program of China(No.2013AA093002)the 12th Five-Year National Science&Technology Support Program(No.2012BAI29B06)
文摘Polysaccharides from numerous traditional Chinese medicines have been proven as the bioactive ingredients and are hence used as the quality control markers. However, the assessment criteria always show a poor specificity, due to the lack of matic comparison among the analogous herbs. In the present study, two similar materials, namely sea-tangle and sargassum, were selected as the model herbs to develop more specific methods for quality control. Two well-established methods, determination of the total polysaccharides content and monosaccharides composition analysis, were both employed. Based upon the quantitative results, the evaluation criteria of the polysaccharides contents of not less than 2.0% and 1.7% were proposed for sea-tangle and sargassum, tively. Nine identical monosaccharide derivatives appeared on the HPLC chromatograms of the hydrolysis and derivatized solutions of the two drugs. Principal component analysis and orthogonal partial least squares discriminant analysis using the peak areas of monosaccharides derivatives as the variables were performed, and the results indicated that mannuronic acid and xylose with the opposite concentrations in the two drugs were the differential components. A discriminative criterion using the peak area ratio of these two monosaccharides derivatives was proposed for the qualitative identification. In conclusion, a more specific and quantitative quality control method was developed for sea-tangle and sargassum.
