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OBJECT IVE To study the effects of ergosterol peroxide derivatives EP-3P on the proliferation ，migration and invasion of human tripe negative breast cancer cell MDA-MB- 231，and to provide reference for the development of breast cancer related drugs. METHODS MTT assay was adopted to detect the proliferation of MDA-MB- 231 cells after treated with 0（blank control），1.25，2.5，5，10，20，40 μmol/L EP-3P for 24，48 and 72 h. Wound healing assay and Transwell chamber method were adopted to detect the migration and invasion ability of MDA-MB- 231 cells after treated with 0（blank control ），5，10，20 EP-3P for 24 h. The apoptosis and cell cycle distribution were detected by flow cytometry. Western blot assay was used to detect the expressions of B-cell lympho ma-2（Bcl-2），Bcl-2 associated X protein （Bax），caspase-3，cleaved-caspase-3，cytochrome C （Cyt-C），matrix metalloproteinase- 2（MMP-2）and MMP- 9. RESULTS Compared with blank control group ，2.5，5，10，20，40 μmol/L EP-3P could significantly increase the inhibitory rate of cell proliferation （P＜0.05 or P＜0.01）in a dose and time- dependent manner. After 24 h treatment of EP- 3P（10，20 μmol/L），the rate of cell migration and the number of invasive cells were decreased significantly （P＜0.01），and cell was arrested at G 2/M stage （P＜0.05 or P＜0.01）；the apoptotic rate was increased significantly （P＜0.05）；the protein expressions of Bax ，Cyt-C and cleaved-caspase- 3 were upregulated significantly ， while those of Bcl- 2，caspase-3，MMP-2 and MMP- 9 were downregulated significantly （P＜0.01）. CONCLUSIONS EP-3P can inhibit the proliferation ，migration and invasion of human tripe negative breast cancer cells MDA-MB- 231 through mitochondrial mediated endogenous caspase pathway ，and induce the apoptosis of cells .
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Objective To use double clustering analysis and visualization method to analyze the research on Siraitiae Fructus in recent ten years; To know the hot spots and trend of research. Methods Relevant research about Siraitiae Fructus in CNKI from January of 2007 to December of 2016 was retrieved by computers, and the retrieval time was February 20th, 2017. BICOMB, NetDraw, gCLUTO and SPSS19.0 software were used to conduct double clustering analysis and visualization analysis for included articles. Keywords were analyzed, and social network graph, visualization matrix, peak image and multidimensional scaling analysis map were drawn. Correlation among high-frequency key words were analyzed. Results Totally 723 articles were included, among which 70 articles were issued during 2012–2016; 76 key words were obtained by key word co-occurrence network map, among which mogroside, MOG, extraction process, tissue culture, cultivation technology, varieties, growth and development were in the core position; visualization and the peak image showed that the topics in this research field could be divided into 6 categories; research hotspot dynamic evolution showed that Siraitiae Fructus flower, beverage, total flavonoids, gene expression, gene cloning, enzyme, apoptosis, and Siraitiae Fructus seed oil would be the hot spots of further study. Conclusion This study reveals that the research on Siraitiae Fructus in the recent ten years are becoming mature, and expand to deep level.
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Objective To use double clustering analysis and visualization method to analyze the research on Siraitiae Fructus in recent ten years; To know the hot spots and trend of research. Methods Relevant research about Siraitiae Fructus in CNKI from January of 2007 to December of 2016 was retrieved by computers, and the retrieval time was February 20th, 2017. BICOMB, NetDraw, gCLUTO and SPSS19.0 software were used to conduct double clustering analysis and visualization analysis for included articles. Keywords were analyzed, and social network graph, visualization matrix, peak image and multidimensional scaling analysis map were drawn. Correlation among high-frequency key words were analyzed. Results Totally 723 articles were included, among which 70 articles were issued during 2012–2016; 76 key words were obtained by key word co-occurrence network map, among which mogroside, MOG, extraction process, tissue culture, cultivation technology, varieties, growth and development were in the core position; visualization and the peak image showed that the topics in this research field could be divided into 6 categories; research hotspot dynamic evolution showed that Siraitiae Fructus flower, beverage, total flavonoids, gene expression, gene cloning, enzyme, apoptosis, and Siraitiae Fructus seed oil would be the hot spots of further study. Conclusion This study reveals that the research on Siraitiae Fructus in the recent ten years are becoming mature, and expand to deep level.
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OBJECTIVE@#To obtain the genetic polymorphism data of two STR loci D2S1399 and D5S2500 in Eastern Chinese Han population.@*METHODS@#Blood samples or buccal swabs of unrelated Han individuals living in eastern China were analyzed using PCR-nature polyacrylamide gel electrophoresis-sliver staining method.@*RESULTS@#11 alleles of D2S1399 and 9 alleles of D5S2500 were observed in the samples respectively, the observed heterozygosity (Ho) values, the discrimination power (DP) values and the power of exclusion (PE) values of D2S1399 and D5S2500 is 0.745 and 0.807, 0.958 and 0.917, 0.554 and 0.643, respectively.@*CONCLUSION@#The result showed that D2S1399 and D5S2500 were highly informative loci and suitable for forensic application.
Subject(s)
Humans , Alleles , Asian People/genetics , Electrophoresis, Polyacrylamide Gel , Forensic Medicine , Gene Frequency , Genetics, Population , Genotype , Polymerase Chain Reaction , Polymorphism, Genetic , Silver Staining , Tandem Repeat SequencesABSTRACT
Single cell gel electrophoresis assay (SCGE), also named as alkaline comet assay, was a simple, rapid and sensitive method to evaluate DNA damage. In this study SCGE technique was used to monitor DNA damage difference in tumor patients caused by chemotherapy, DNA damage distribution frequency and DNA damage characters were analyzed by komet image analysis system (KIAS). The results showed that cyclophosphamide greatly caused DNA damage in lymphocytes of tumor patients. There was significant difference of peripheral blood lymphocyte DNA damage between tumor patients and healthy controls. Tail length of lymphocytes were 33.69 +/- 7.56 micro m, and tail DNA% we re 31.51 +/- 5.4 6% in 10 cancer patients treated with cyclophosphamide, while Tail length were 1 6.2 +/- 1.5 micro m and tail DNA% were 7.46 +/- 1.15% in healthy controls. there was great significant difference on tail length and tail DNA% values between cancer patients and healthy controls (P < 0.01). In conclusion, the successful measurement of DNA damage caused by Cyclophosphamide treatment means that the alkaline comet assay as a valuable tool can be very useful in cancer epideminology study, and also be valuable to evaluate DNA damage status of patients in clinic.