Résumé
Objective:To investigate the influence of metastasis suppressor gene KAI1 on the proliferation,invasion and metastasis of endometrial carcinoma cell line AN3CA and HEC-1-B.Methods:The KAI1 cDNA was transfected into human endometrial carcinoma cells AN3CA and HEC-1-B via Lipofectamine 2000.The expression of KAI1 protein was ex- amined by Western blotting and flow cytometry before and after transfection.The proliferation ability of AN3CA and HEC- 1-B cells was observed by MTT assay and anchorage-independent growth assay.The changes of cell invasive ability were studied by transwell assays.Results:Stable expression of KAI1 protein was observed in AN3CA and HEC-1-B cells and on their surface after transfection with pcDNA3-KAI1 plasmid.Cells transfected with blank plasmid formed more colonies and had a larger size,with the colony forming rates being(54.2?3.1)% for AN3CA cells and(52.7?4.3)% for HEC- 1- B cells;the doubling time of AN3CA and HEC-1-B cells were 21.3 h and 20.1 h,respectively.Cells transfected with pcDNA3-KAI1 formed less colonies and had a smaller size,with the colony forming rates being(37.4?5.1)% for AN3CA cells and(32.1?3.7)% for HEC-1-B cells;the doubling time of AN3CA and HEC-1-B cells were 43.7h and 45.2 h,respectively.The cell proliferation abilities and colony-forming ability were significantly different between the two groups(P
Résumé
<p><b>OBJECTIVE</b>To investigate the difference of anticytomegaloviral activity of three kinds of traditional Chinese medicines which are the injections of Jinye Baidu, Radix Isatidis and Indigowoa in vitro.</p><p><b>METHOD</b>The inhibitory activity of three traditional Chinese medicines against human cytomeglovirus (HCMV AD169) infected human embryo lung fibroblasts (HELF) was observed by cytopathic effect method (CPE) and MTT method in vitro. According their value of A, anticytomegaloviral activity has evaluated.</p><p><b>RESULT</b>Experimental study in vitro showed that the 50% toxicity dose (TD50) of Jinye Detoxifying, Radix Isatidis root and Indigowoa were 20, 10.23, 20.23 g x L(-1) respectively; the 50% inhibitory concertration (IC50) were 5.65, 3, 5.71 g x L(-1) respectively; the therapeutic index (TI) were 3.54, 3.41 and 3.54 respectively. It suggested that three traditional Chinese medicines had anticytomeglovirus activity and their effect increased with their concentration.</p><p><b>CONCLUSION</b>Three traditional Chinese medicines of the parenteral solution of Jinye Detoxifying, Radix Isatidis root and Indigowoa have antiviral activity when they are diluted in 1:200. They are safe and valuable drug for inhibiting cytomeglovirus infection.</p>