ABSTRACT
Objective:To explore the regulatory effect of Hsf 1 on PLC/PRF5 hepatoma cells proliferation.Methods: By shRNA gene silencing technology ,constructed PLC/PRF5 hepatoma cell line of Hsf 1 gene silencing.To detect the expression of Hsf 1, p53 and Rb proteins in PLC/PRF5 hepatoma cells by Western blot.The proliferation of PLC/PRF5 cell line was observed by methylthiazolyl tetrazolium assay ( MTT ) , plate clone formation assay ( PCFA ) and cell cycle assay.Results: shRNA-Hsf1 could significantly inhibit the expression of Hsf 1 in PLC/PRF5 cells.It could induce PLC/PRF5 cells stopping at G1 phase of cell cycle , inhibit cell proliferation and colonal formation;silencing Hsf1 caused up-regulation of p53 and Rb proteins expression in PLC/PRF5 cells.Conclusion: Silencing Hsf1 is involved in up-regulation of p53 and Rb proteins expression , which results in inhibiting proliferation of PLC/PRF5 hepatoma cells.
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Aim To study ethanol-induced changes in the development and neuronal number of visual cortex in C57BL /6 mice. Methods Female mice were fed with ethanol during pregnancy . The neuron density (ND) and cortical thickness (CT) in visual cortex of off spring mice were measured at either P0, P7 and P14 with hematoxylin and eosin (H.E) and Nissl staining. Results Embryonic death and malformationswere found in the ethanol-treated groups. Malformations, such as microcephaly,anencephaly and myeloschisis with spinabifida, etc were found in late-term embryos. The malformation rate was 12%. Compared with control group, the development of visual cortex in ethanol-treated groups was delayed, and its lamination was in disorder. The neuron polarity was disturbed. Neuron loss was found after ethanol exposure. At various ages, the neuron density in ethanol-treated groups was lower than that in control group(P
ABSTRACT
Objective To study ethanol-induced the neuroapoptosis of visual cortex in offspring mice. Methods Pregnant female mice were fed by intubating alcohol daily,beginning on E5(embryonic,E) and continuing through the pup's birth.The neuroapoptosis in P0,P7 and P14 visual cortex was visualized by Caspase-3 activity immunohistochemistry and Terminal deoxynucleotidyl transferase biotin-dUTP nick end labeling(TUNEL) staining. Results Usually,the pup's birth days would delay one or two days after ethanol exposure.Moreover,ethanol induced reabsorption of fetus and malformations,such as microcephaly,anencephaly and myeloschisis with spinabifida and so on,were found in the study.Apoptosis index in ethanol treatment groups was obviously higher than that in control at either P0,P7 or P14(P