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Objective:To investigate the effect of lentivirus-mediated silencing of mitochondrial ribosomal protein L35 (MRPL35) gene on the growth of human esophageal cancer TE-1cells, and to clarify its mechanism.Methods:Three kinds of human esophageal cancer cells, TE-1, ECA109and KYSE150, were selected.The relative expression levels of MRPL35mRNA in three kinds of cells by real-time quantitative PCR.The esophageal cancer TE-1cells were divided into shMRPL35group and shCtrl group, and the cells were infected with si-RNA lentivirus and si-RNA lentivirus;the esophageal cancer cell line stably silenting the MRPL35gene was established.Real-time quantitative PCR and Western blotting methods were used to detect the efficiency of MRPL35gene silencing.The cell growth curves in various groups were detected by CCK-8method, and the apoptotic rates were detected by flow cytometry after AnnexinⅤ-PE/7AAD double staining.Results:Three kinds of esophageal cancer cells expressed MRPL35gene, and the expression levels were not statistically significant between them (P＞0.05) .The results of real-time quantitative PCR and Western blotting methods showed that the mRNA and protein levels of MRPL35in the TE-1cells in shMRPL35group were significantly lower than those in shCtrl group (P＜0.05) .Compared with shCtrl group, the cell growth speed in shMRPL35group was decreased (P＜0.05) , and the apoptotic rate was significantly increased (P＜0.01) .Conclusion:Silencing MRPL35gene can inhibit the proliferation of esophageal cancer TE-1cells and plays a role through the apoptotic pathway.
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Objective To investigate the effects of bone marrow(BM)-sparing pelvic intensity-modulated radiotherapy(IMRT)after surgery for cervical cancer on radiation dose to the target volume,organs at risk(OAR),and hematologic toxicity. Methods Ten patients with cervical cancer who would receive postoperative radiotherapy were selected.BM-sparing pelvic IMRT and conventional IMRT were performed for the same image by the Varian planning system. The radiation dose to the pelvis,the dose distribution of the target volume,and the radiation dose to OAR were compared between the two plans. A total of 30 patients with cervical cancer who had received postoperative radiotherapy were selected to investigate the relationships of the radiation dose to the pelvis with the lengths of the pelvis in coronal axis,sagittal axis,and vertical axis and the pelvic volume. A total of 41 patients with cervical cancer who would receive postoperative radiotherapy were randomly divided into observation group and control group. The observation group was given BM-sparing IMRT,while the control group was given conventional IMRT.The incidence of grade ≥2 hematologic toxicity was compared between the two groups and the relationship between the hematologic toxicity and the radiation dose to the pelvis was investigated. Results Both groups showed excellent dose coverage to the clinical target volume. There was no significant difference in radiation dose to the OAR between the two groups(all P>0.05).However,the observation group had significantly lower D mean,V 10,V 20,V 40,and V 50of the pelvis than the control group(P=0.003-0.045).The Pearson correlation analysis showed that D mean,V 20,V 30,V 40,and V 50of the pelvis were negatively correlated with the length of the pelvis in coronal axis(P=0.008-0.038).The observation group had a significantly lower incidence of hematologic toxicity than the control group(P=0.019).The logistic regression analysis showed that the development of hematologic toxicity was significantly associated with V 20of the pelvis (OR=1.191,P=0.042). Conclusions BM-sparing IMRT after surgery for cervical cancer can reduce the radiation dose to the pelvis and the incidence of blood toxicity. The radiation dose to the pelvis is negatively correlated with the length of the pelvis in coronal axis. The development of hematologic toxicity is associated with V 20of the pelvis.
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Objective To prepare rabbit anti-human RBBP10 polyclonal antibody and then character them.Methods New Zealand rabbit was immunized with RBBP10 protein,Polyclonal antiserum was analyzed by ELISA and Western blot.Results The titer of the antiserum obtained in this experiment determined by ELISA was up to 1∶16000 and the sensitivity was at least 10?g/?l.Western blot results show the antibody has high specificity.Conclusions Preparation the Rabbit anti-human RBBP10 Polyclonal antibody in this method is successfully,The expression of the RBBP10 protein in tumor can be detected in immunohistochemistry method,it is useful.