Wei Long

A combination system for prediction of Chinese Materia Medica properties

Identifying and explaining the property of Chinese Materia Medica (CMM) is an important and urgent mission in recent CMM researches. In the present work, we built a combination system for predicting the cold/hot property of CMM based on chemical material basis. A novel strategy, weight center treatment, was used to solve the problem that the chemical description was unable to be applied to CMM. As the results of prediction, the accuracy of 83.3% and 81.0% for the training and the test set, respectively, indicates that this system is a useful tool to predict the property of unidentified folk herbs and foreign herbs. It will characterize these herbs with traditional Chinese medicine properties so as to design new CMM formulas for better therapeutics. Moreover, we found some interesting explanation about the property of CMM based on chemical information by using the selected descriptors. It will give new insight into the CMM property from the standpoint of chemistry.

Anticancer activity of total flavonoids isolated from Xianhe Yanling Recipe (仙鹤延龄方).

ObjectiveTo investigate the anticancer activity of the total flavonoids isolated from a herbal formula, Xianhe Yanling Recipe (仙鹤延龄方), a recipe commonly used in cancer patients in China.MethodsThe in vitro anticancer activity of the total flavonoids was determined using the 3-(4,5-dimethylthiazole-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay on three cancer cell lines: MCF-7 (a human breast adenocarcinoma cell line), HepG-2 (a human hepatocellular carcinoma cell line) and ES-2 (a human ovarian cancer cell line). The in vivo anticancer effect of the total flavonoids was assessed in a mouse tumor model bearing H22-induced hepatocellular carcinoma, and cisplatin was used as a positive control.ResultsThe total flavonoids exerted a powerful inhibitory effect on the three cell lines, with 50% inhibiting concentrations (IC50) of 24.948, 31.569 and 6.923 μg/mL, respectively. In vivo studies showed that the total flavonoids had dose-dependent inhibitory effects on hepatocellular carcinoma in mice.ConclusionThe total flavonoids from Xianhe Yanling Recipe have potential anticancer activity, and further researches and development are warranted.

Oxysophoridine suppresses the growth of hepatocellular carcinoma in mice: In Vivo and cDNA microarray studies

ObjectiveTo observe the in vivo effects of oxysophoridine on hepatocellular carcinoma in mice and to study the related mechanisms.MethodsC57BL mice were inoculated with mouse hepatoma H22 cells subcutaneously, then divided into 5 groups (14 per group), and treated with oxysophoridine (50, 100, or 150 mg/kg) or cisplatin (4 mg/kg) for 10 days. Inhibitory rate of tumor, body weight gain, and influence indices on internal organs (liver, spleen and thymus) were evaluated. The differentially expressed genes between the oxysophoridine-treated group, and the control group were analyzed using cDNA microarray and quantitative real-time PCR (qRT-PCR) experiments.ResultsCompared with the tumor weight of the control group (2.75±0.66 g), oxysophoridine significantly suppressed hepatocellular carcinoma growth in mice (P <0.01), with 0.82±0.36 g, 0.57±0.22 g, and 1.22±0.67 g for the tumor weight in the low, moderate, and high dose treatment group, respectively. The moderate dose led to the highest inhibitory rate, 79.3%. Observation of body weight gain and influence on three organs showed that compared with cisplatin, oxysophoridine produced fewer side effects in vivo. cDNA microarray and qRT-PCR showed that the most significant differentially expressed genes in the tumor samples of oxysophoridine-treated mice were mostly involved in regulating apoptosis, with the Tnfrsf11b (osteoprotegerin) gene being the most significantly affected.ConclusionOxysophoridine was a promising compound for developing drugs against hepatocellular carcinoma, and its anti-hepatoma effect was probably related to osteoprotegerin activation.