Experimental study of anti-metastasis effects of HUVEC vaccine combined with chemotherapy in EMT-6 breast cancer / 中国免疫学杂志

Objective:To investigate whether human umbilical vein endothelial cell(HUVEC) vaccine combined with low dose docetaxel (DOC) could play a synergistic role in anti-breast cancer.Methods:BALB/c mice were randomly divided into normal saline group,HUVEC vaccine group,DOC group,and HUVEC vaccine combined with DOC treatment group (HUVEC-DOC) group.An experimental metastasis model by tail vein injection of EMT-6 breast cancer cells was employed to evaluate the anti-metastatic efficiency of the HUVEC-DOC combination treatment regime.Lymphocyte proliferation assay,cytotoxic T lymphocytes and an indirect enzyme-linked immunosorbent assay (ELISA) for detecting IFN-γ were used to investigate cellular immune responses elicited by the combination treatment regime.Results:Compared with HUVEC and DOC single drug group,the number of lung metastasis in HUVEC-DOC combination treatment group was significantly decreased(P<0.05).In vitro analysis of splenocytes isolated from immunized mice revealed an induction of cytotoxic T lymphocytes(CTLs) with a lytic activity against activated endothelium.IFN-γ in the serum of im-munized mice of the HUVEC-DOC combination treatment group was significantly higher than that in the other three groups(P<0.05). Conclusion:HUVEC vaccine with low dose of DOC could display synergistic anti-breast cancer effect.

Screening study of the kinetogenic effects of serum containing four Chinese materia medicas on the colonic smooth muscle cells in rats / 中国中西医结合杂志

<p><b>OBJECTIVE</b>To study the kinetogenic effects of serum containing Semen Arecae, Dandelion, Semen raphani and Atractylodes macrocephala on the colonic smooth muscle cells of rats.</p><p><b>METHODS</b>Serum containing Chinese materia medicas was made according to standard methods. Smooth muscle cells were isolated from the muscle layers of Wistar rat's colon, referred to modified Bitar's method. The contractile response of colonic smooth muscle cells to serum containing Chinese materia medicas (10%, 50%, 100% concentration) and other medicines (blank and 1 x 10(-3) mol/L acetylcholine) were separately observed. The contractility was presented by the decrease of the cell length between the drug groups and the control.</p><p><b>RESULTS</b>Serum containing each Chinese materia medica can make dose-dependent contraction at different concentrations (P < 0.05), but the strongest effect of each serum had no significant difference (P > 0.05).</p><p><b>CONCLUSION</b>Serum containing Semen Arecae, Dandelion, Semen raphani and Atractylodes macrocephala can make notable contraction on colonic smooth muscle cells in rats.</p>