结肠癌富伴侣分子疫苗的制备及其抗癌作用研究

Objective To prepare the anticolon carcinoma vaccine with rich chaperone peptide and to examine its anticancer immunological efficacy. Methods CT26 colon carcinoma cells were cultured in 1 mg/L Trichosanthin 1640 medium at different temperatures to induce the chaperone expression and promote the synthesis of antigen peptides. Groups of these cells treated under the different condition were lysed by the sonic disintegration, and the lysates were centrifuged. The rawpurified proteins were obtained from the supernatants by precipitating with saturated ammonium sulfate and removing the molecules below 50 000 and above 300 000 in molecular weight via dialysis. Furthermore, the proteins with the molecular weights in 70 000, 90 000, 95 000, 110 000 and 170 000 were collected through gel filtration and SDS-PAGE. The purified proteins were analysed by Western blotting, and inspected on the anticancer immunological effects including lymphocyte proliferation and the activities of NK and CTL. Results Major of the chaperone peptides of anticancer effects in CT26 cells, including antigen peptides joining with HSP70, HSP90, gp96, HSP110 and HSP170, was satisfactorily extracted and condensed, and rich chaperone peptide composites were successfully obtained. The composites prepared under various condition could all enhance lymphocyte proliferation and the activities of CTL and NK (P<0.01). Conclusions The rich chaperone peptide composites are successfully prepared via dialysis, salt fractionation and gel filtration combined with SDS-PAGE. Both the heat stress and Trichosanthin can increase the composites, which treated by 42℃ heat stress and Trichosanthin are found to possess the strongest anticancer efficacy.     

结肠癌富伴侣分子疫苗的制备及其抗癌作用研究

Objective To prepare the anticolon carcinoma vaccine with rich chaperone peptide and to examine its anticancer immunological efficacy. Methods CT26 colon carcinoma cells were cultured in 1 mg/L Trichosanthin 1640 medium at different temperatures to induce the chaperone expression and promote the synthesis of antigen peptides. Groups of these cells treated under the different condition were lysed by the sonic disintegration, and the lysates were centrifuged. The rawpurified proteins were obtained from the supernatants by precipitating with saturated ammonium sulfate and removing the molecules below 50 000 and above 300 000 in molecular weight via dialysis. Furthermore, the proteins with the molecular weights in 70 000, 90 000, 95 000, 110 000 and 170 000 were collected through gel filtration and SDS-PAGE. The purified proteins were analysed by Western blotting, and inspected on the anticancer immunological effects including lymphocyte proliferation and the activities of NK and CTL. Results Major of the chaperone peptides of anticancer effects in CT26 cells, including antigen peptides joining with HSP70, HSP90, gp96, HSP110 and HSP170, was satisfactorily extracted and condensed, and rich chaperone peptide composites were successfully obtained. The composites prepared under various condition could all enhance lymphocyte proliferation and the activities of CTL and NK (P<0.01). Conclusions The rich chaperone peptide composites are successfully prepared via dialysis, salt fractionation and gel filtration combined with SDS-PAGE. Both the heat stress and Trichosanthin can increase the composites, which treated by 42℃ heat stress and Trichosanthin are found to possess the strongest anticancer efficacy.     

结肠癌富伴侣分子疫苗的制备及其抗癌作用研究

Objective To prepare the anticolon carcinoma vaccine with rich chaperone peptide and to examine its anticancer immunological efficacy. Methods CT26 colon carcinoma cells were cultured in 1 mg/L Trichosanthin 1640 medium at different temperatures to induce the chaperone expression and promote the synthesis of antigen peptides. Groups of these cells treated under the different condition were lysed by the sonic disintegration, and the lysates were centrifuged. The rawpurified proteins were obtained from the supernatants by precipitating with saturated ammonium sulfate and removing the molecules below 50 000 and above 300 000 in molecular weight via dialysis. Furthermore, the proteins with the molecular weights in 70 000, 90 000, 95 000, 110 000 and 170 000 were collected through gel filtration and SDS-PAGE. The purified proteins were analysed by Western blotting, and inspected on the anticancer immunological effects including lymphocyte proliferation and the activities of NK and CTL. Results Major of the chaperone peptides of anticancer effects in CT26 cells, including antigen peptides joining with HSP70, HSP90, gp96, HSP110 and HSP170, was satisfactorily extracted and condensed, and rich chaperone peptide composites were successfully obtained. The composites prepared under various condition could all enhance lymphocyte proliferation and the activities of CTL and NK (P<0.01). Conclusions The rich chaperone peptide composites are successfully prepared via dialysis, salt fractionation and gel filtration combined with SDS-PAGE. Both the heat stress and Trichosanthin can increase the composites, which treated by 42℃ heat stress and Trichosanthin are found to possess the strongest anticancer efficacy.     

结肠癌富伴侣分子疫苗的制备及其抗癌作用研究

Objective To prepare the anticolon carcinoma vaccine with rich chaperone peptide and to examine its anticancer immunological efficacy. Methods CT26 colon carcinoma cells were cultured in 1 mg/L Trichosanthin 1640 medium at different temperatures to induce the chaperone expression and promote the synthesis of antigen peptides. Groups of these cells treated under the different condition were lysed by the sonic disintegration, and the lysates were centrifuged. The rawpurified proteins were obtained from the supernatants by precipitating with saturated ammonium sulfate and removing the molecules below 50 000 and above 300 000 in molecular weight via dialysis. Furthermore, the proteins with the molecular weights in 70 000, 90 000, 95 000, 110 000 and 170 000 were collected through gel filtration and SDS-PAGE. The purified proteins were analysed by Western blotting, and inspected on the anticancer immunological effects including lymphocyte proliferation and the activities of NK and CTL. Results Major of the chaperone peptides of anticancer effects in CT26 cells, including antigen peptides joining with HSP70, HSP90, gp96, HSP110 and HSP170, was satisfactorily extracted and condensed, and rich chaperone peptide composites were successfully obtained. The composites prepared under various condition could all enhance lymphocyte proliferation and the activities of CTL and NK (P<0.01). Conclusions The rich chaperone peptide composites are successfully prepared via dialysis, salt fractionation and gel filtration combined with SDS-PAGE. Both the heat stress and Trichosanthin can increase the composites, which treated by 42℃ heat stress and Trichosanthin are found to possess the strongest anticancer efficacy.     

结肠癌富伴侣分子疫苗的制备及其抗癌作用研究

Objective To prepare the anticolon carcinoma vaccine with rich chaperone peptide and to examine its anticancer immunological efficacy. Methods CT26 colon carcinoma cells were cultured in 1 mg/L Trichosanthin 1640 medium at different temperatures to induce the chaperone expression and promote the synthesis of antigen peptides. Groups of these cells treated under the different condition were lysed by the sonic disintegration, and the lysates were centrifuged. The rawpurified proteins were obtained from the supernatants by precipitating with saturated ammonium sulfate and removing the molecules below 50 000 and above 300 000 in molecular weight via dialysis. Furthermore, the proteins with the molecular weights in 70 000, 90 000, 95 000, 110 000 and 170 000 were collected through gel filtration and SDS-PAGE. The purified proteins were analysed by Western blotting, and inspected on the anticancer immunological effects including lymphocyte proliferation and the activities of NK and CTL. Results Major of the chaperone peptides of anticancer effects in CT26 cells, including antigen peptides joining with HSP70, HSP90, gp96, HSP110 and HSP170, was satisfactorily extracted and condensed, and rich chaperone peptide composites were successfully obtained. The composites prepared under various condition could all enhance lymphocyte proliferation and the activities of CTL and NK (P<0.01). Conclusions The rich chaperone peptide composites are successfully prepared via dialysis, salt fractionation and gel filtration combined with SDS-PAGE. Both the heat stress and Trichosanthin can increase the composites, which treated by 42℃ heat stress and Trichosanthin are found to possess the strongest anticancer efficacy.     

结肠癌富伴侣分子疫苗的制备及其抗癌作用研究

Objective To prepare the anticolon carcinoma vaccine with rich chaperone peptide and to examine its anticancer immunological efficacy. Methods CT26 colon carcinoma cells were cultured in 1 mg/L Trichosanthin 1640 medium at different temperatures to induce the chaperone expression and promote the synthesis of antigen peptides. Groups of these cells treated under the different condition were lysed by the sonic disintegration, and the lysates were centrifuged. The rawpurified proteins were obtained from the supernatants by precipitating with saturated ammonium sulfate and removing the molecules below 50 000 and above 300 000 in molecular weight via dialysis. Furthermore, the proteins with the molecular weights in 70 000, 90 000, 95 000, 110 000 and 170 000 were collected through gel filtration and SDS-PAGE. The purified proteins were analysed by Western blotting, and inspected on the anticancer immunological effects including lymphocyte proliferation and the activities of NK and CTL. Results Major of the chaperone peptides of anticancer effects in CT26 cells, including antigen peptides joining with HSP70, HSP90, gp96, HSP110 and HSP170, was satisfactorily extracted and condensed, and rich chaperone peptide composites were successfully obtained. The composites prepared under various condition could all enhance lymphocyte proliferation and the activities of CTL and NK (P<0.01). Conclusions The rich chaperone peptide composites are successfully prepared via dialysis, salt fractionation and gel filtration combined with SDS-PAGE. Both the heat stress and Trichosanthin can increase the composites, which treated by 42℃ heat stress and Trichosanthin are found to possess the strongest anticancer efficacy.     

结肠癌富伴侣分子疫苗的制备及其抗癌作用研究

Objective To prepare the anticolon carcinoma vaccine with rich chaperone peptide and to examine its anticancer immunological efficacy. Methods CT26 colon carcinoma cells were cultured in 1 mg/L Trichosanthin 1640 medium at different temperatures to induce the chaperone expression and promote the synthesis of antigen peptides. Groups of these cells treated under the different condition were lysed by the sonic disintegration, and the lysates were centrifuged. The rawpurified proteins were obtained from the supernatants by precipitating with saturated ammonium sulfate and removing the molecules below 50 000 and above 300 000 in molecular weight via dialysis. Furthermore, the proteins with the molecular weights in 70 000, 90 000, 95 000, 110 000 and 170 000 were collected through gel filtration and SDS-PAGE. The purified proteins were analysed by Western blotting, and inspected on the anticancer immunological effects including lymphocyte proliferation and the activities of NK and CTL. Results Major of the chaperone peptides of anticancer effects in CT26 cells, including antigen peptides joining with HSP70, HSP90, gp96, HSP110 and HSP170, was satisfactorily extracted and condensed, and rich chaperone peptide composites were successfully obtained. The composites prepared under various condition could all enhance lymphocyte proliferation and the activities of CTL and NK (P<0.01). Conclusions The rich chaperone peptide composites are successfully prepared via dialysis, salt fractionation and gel filtration combined with SDS-PAGE. Both the heat stress and Trichosanthin can increase the composites, which treated by 42℃ heat stress and Trichosanthin are found to possess the strongest anticancer efficacy.     

结肠癌富伴侣分子疫苗的制备及其抗癌作用研究

Objective To prepare the anticolon carcinoma vaccine with rich chaperone peptide and to examine its anticancer immunological efficacy. Methods CT26 colon carcinoma cells were cultured in 1 mg/L Trichosanthin 1640 medium at different temperatures to induce the chaperone expression and promote the synthesis of antigen peptides. Groups of these cells treated under the different condition were lysed by the sonic disintegration, and the lysates were centrifuged. The rawpurified proteins were obtained from the supernatants by precipitating with saturated ammonium sulfate and removing the molecules below 50 000 and above 300 000 in molecular weight via dialysis. Furthermore, the proteins with the molecular weights in 70 000, 90 000, 95 000, 110 000 and 170 000 were collected through gel filtration and SDS-PAGE. The purified proteins were analysed by Western blotting, and inspected on the anticancer immunological effects including lymphocyte proliferation and the activities of NK and CTL. Results Major of the chaperone peptides of anticancer effects in CT26 cells, including antigen peptides joining with HSP70, HSP90, gp96, HSP110 and HSP170, was satisfactorily extracted and condensed, and rich chaperone peptide composites were successfully obtained. The composites prepared under various condition could all enhance lymphocyte proliferation and the activities of CTL and NK (P<0.01). Conclusions The rich chaperone peptide composites are successfully prepared via dialysis, salt fractionation and gel filtration combined with SDS-PAGE. Both the heat stress and Trichosanthin can increase the composites, which treated by 42℃ heat stress and Trichosanthin are found to possess the strongest anticancer efficacy.     

结肠癌富伴侣分子疫苗的制备及其抗癌作用研究

Objective To prepare the anticolon carcinoma vaccine with rich chaperone peptide and to examine its anticancer immunological efficacy. Methods CT26 colon carcinoma cells were cultured in 1 mg/L Trichosanthin 1640 medium at different temperatures to induce the chaperone expression and promote the synthesis of antigen peptides. Groups of these cells treated under the different condition were lysed by the sonic disintegration, and the lysates were centrifuged. The rawpurified proteins were obtained from the supernatants by precipitating with saturated ammonium sulfate and removing the molecules below 50 000 and above 300 000 in molecular weight via dialysis. Furthermore, the proteins with the molecular weights in 70 000, 90 000, 95 000, 110 000 and 170 000 were collected through gel filtration and SDS-PAGE. The purified proteins were analysed by Western blotting, and inspected on the anticancer immunological effects including lymphocyte proliferation and the activities of NK and CTL. Results Major of the chaperone peptides of anticancer effects in CT26 cells, including antigen peptides joining with HSP70, HSP90, gp96, HSP110 and HSP170, was satisfactorily extracted and condensed, and rich chaperone peptide composites were successfully obtained. The composites prepared under various condition could all enhance lymphocyte proliferation and the activities of CTL and NK (P<0.01). Conclusions The rich chaperone peptide composites are successfully prepared via dialysis, salt fractionation and gel filtration combined with SDS-PAGE. Both the heat stress and Trichosanthin can increase the composites, which treated by 42℃ heat stress and Trichosanthin are found to possess the strongest anticancer efficacy.     

茶多酚通过调节Akt通路诱导胰腺癌细胞凋亡

Objective To investigate the regulation of Akt signaling pathway involved in apeptosis of Panc-I cells induced by polyphenol ( - )-epigallocatechin-3-gallate. Methods Pane-1 cells were maintained in DMEM with 10% fetal calf serum in a 95% air,5% CO2 atmosphere,then incubated in different concentrations of EGCG (6.3,12.5,25.0,50.0 μmol/L). The growth arrest effect was determined by MTT assay, and apoptosis was detected by agarose gel electrophoresis. The levels of Akt (60×103 ) and Bad (23×103) were determined by Western blot. Results EGCG time and dose dependently repressed the growth of Panc-1 cells and induced apeptosis in Panc-1 cells ( P <0.05 ). The expression of p-Akt (set473) and p-Bad (ser136) was reduced in a dose-dependent way,whereas the pan-Akt and pan-Bad were unchanged (P < 0.05). Conclusion EGCG can induce apoptosis in pancreatic cancer cells in a dose-and time-dependent fashion by attenuating the blocking effects of Akt signaling pathway on Bad proteins.