目的探讨三氧化二砷(arsenic trioxide,As2O3)联合全反式维甲酸(all trans retinoic acid,ATRA)在体内和体外对小鼠肝癌H22细胞的抑制作用。方法建立小鼠肝癌H22移植瘤模型,观察As2O3联合ATRA的体内抑瘤作用;用四甲基偶氮唑蓝(MTT)方法...目的探讨三氧化二砷(arsenic trioxide,As2O3)联合全反式维甲酸(all trans retinoic acid,ATRA)在体内和体外对小鼠肝癌H22细胞的抑制作用。方法建立小鼠肝癌H22移植瘤模型,观察As2O3联合ATRA的体内抑瘤作用;用四甲基偶氮唑蓝(MTT)方法测定As2O3联合ATRA在体外对小鼠肝癌H22细胞株的生长抑制作用。结果As2O3联合ATRA在体外能明显抑制H22细胞的生长和增殖,抑制率为52.24%;在体内对H22小鼠的肿瘤体积、重量均有明显的抑制作用,抑制率分别为66.25%、62.07%。结论As2O3和ATRA在体内和体外对H22肿瘤细胞的生长均有抑制作用,联合应用作用加强,有协同作用。展开更多
AIM: To investigate the antitumor and synergistic effect of Chinese medicine 'Bushen huayu jiedu recipe' (recipe for invigorating the kidney, removing blood stasis and toxic substances) and chemotherapy on mic...AIM: To investigate the antitumor and synergistic effect of Chinese medicine 'Bushen huayu jiedu recipe' (recipe for invigorating the kidney, removing blood stasis and toxic substances) and chemotherapy on mice hepatocarcinoma.METHODS: Bushen huayu jiedu recipe (BSHYJDR)consisting of Chinese Cassia Bark, Psoralea, Zedoary,Rhubarb, etc. is equal to 1.5 g/mL liquid of originated herbs after being decocted, filtered, and concentrated. Kunming mice, weighing 18-22 g, were injected with 0.2 mL ascitic hepatocarcinoma H22 containing 1×107 cells/mL into armpit of the right forelimb of mice. After 24 h, the mice were weighed and randomly divided into tumor-bearing model control group, cisplatin (DDP) group, BSHYJDR high dosage group, low dosage BSHYJDR group, DDP combined with high and low dosage BSHYJDR group, 10 mice in each group. DDP group received injection intraperitoneally (ip) at the dosage of 1 mg/kg (equal to 1/10 LD50), once a day for 4 d. High and low dosage BSHYJDR groups received intragastric BSHYJDR at the dosages of 26.6 and 13.3 g/kg (20 and 10 times each of clinical adult dosage)respectively, while tumor-bearing model group received the equal volume of distilled water once a day for 10 d. On the 11th d, the mice were weighed and killed, then the tumor was dissected and weighed, the repression rate (RR) was calculated according to the mean weight of tumor (MWT).RESULTS: Compared to the model group (MWT: 1.30±0.73),DDP group (MWT: 0.41+0.09, RR: 68.46%) had a significant difference in the inhibition of hepatocarcinoma H22 (P＜0.01).High dosage BSHYJDR group (MWT: 0.69+0.29, RR:46.92%) also had a significant difference in inhibition (P＜0.05), while no difference was found in low dosage BSHYJDR group (MWT: 0.85+0.34, RR: 34.62%) (P＞0.05).When DDP was combined with high dosage BSHYJDR (MWT: 0.29±0.17, RR: 77.69%) and low dosage BSHYJDR (MWT: 0.38±0.21, RR: 70.77%) respectively, we could see improvement of the inhibition effect of DDP on transplanted hepatocarcinoma H22. DDP combined with high dosage BSHYJDR had a significant difference (P＜0.001) compared to DDP, while DDP combined with low dosage BSHYJDR only had a little improvement that is not remarkable.CONCLUSION: Chinese medicine BSHYJDR in combination with chemotherapy can inhibit transplanted hepatocarcinoma in mice.展开更多
Objective:To investigate the antitumor effect of dendritic cell （DC） modified by gp96-peptide complexes both in vitro and in vivo.Methods:Gp96-peptide complexes were acquired from H22 liver cancer cells in mice. DC ...Objective:To investigate the antitumor effect of dendritic cell （DC） modified by gp96-peptide complexes both in vitro and in vivo.Methods:Gp96-peptide complexes were acquired from H22 liver cancer cells in mice. DC were cultured from bone marrow cells and modified by gp96-peptide complexes. Spleen lymphocytes of mice were activated by modified DC and the cytotoxicity were detected by (（）51Cr) release method. Modified DC, gp96-peptide complexes and inactivated H22 cells were injected into mice bearing H22 liver cancer cells to observe the levels of IL-10, IFN-γ in serum and the alteration of proportions of CD8+-IFNγ+ and CD8+- IL-10+ cells, CD4+-IFNγ+ and CD4+- IL-10+ cells. Results:DC modified by gp96-peptide complexes can activate spleen lymphocyte and the latter can specifically kill H22 cells but not Ehrilich ascites carcinoma cells. Modified DC can improve the host’s antitumor immune response and the proportions of Th1 cells, inhibiting tumor growth. Conclusion: Gp96-peptide complexes can activate DC effectively, making DC a good vaccine.展开更多
文摘目的探讨三氧化二砷(arsenic trioxide,As2O3)联合全反式维甲酸(all trans retinoic acid,ATRA)在体内和体外对小鼠肝癌H22细胞的抑制作用。方法建立小鼠肝癌H22移植瘤模型,观察As2O3联合ATRA的体内抑瘤作用;用四甲基偶氮唑蓝(MTT)方法测定As2O3联合ATRA在体外对小鼠肝癌H22细胞株的生长抑制作用。结果As2O3联合ATRA在体外能明显抑制H22细胞的生长和增殖,抑制率为52.24%;在体内对H22小鼠的肿瘤体积、重量均有明显的抑制作用,抑制率分别为66.25%、62.07%。结论As2O3和ATRA在体内和体外对H22肿瘤细胞的生长均有抑制作用,联合应用作用加强,有协同作用。
基金Supported by the Postdoctoral Science Foundation of China, No. [2001] 5
文摘AIM: To investigate the antitumor and synergistic effect of Chinese medicine 'Bushen huayu jiedu recipe' (recipe for invigorating the kidney, removing blood stasis and toxic substances) and chemotherapy on mice hepatocarcinoma.METHODS: Bushen huayu jiedu recipe (BSHYJDR)consisting of Chinese Cassia Bark, Psoralea, Zedoary,Rhubarb, etc. is equal to 1.5 g/mL liquid of originated herbs after being decocted, filtered, and concentrated. Kunming mice, weighing 18-22 g, were injected with 0.2 mL ascitic hepatocarcinoma H22 containing 1×107 cells/mL into armpit of the right forelimb of mice. After 24 h, the mice were weighed and randomly divided into tumor-bearing model control group, cisplatin (DDP) group, BSHYJDR high dosage group, low dosage BSHYJDR group, DDP combined with high and low dosage BSHYJDR group, 10 mice in each group. DDP group received injection intraperitoneally (ip) at the dosage of 1 mg/kg (equal to 1/10 LD50), once a day for 4 d. High and low dosage BSHYJDR groups received intragastric BSHYJDR at the dosages of 26.6 and 13.3 g/kg (20 and 10 times each of clinical adult dosage)respectively, while tumor-bearing model group received the equal volume of distilled water once a day for 10 d. On the 11th d, the mice were weighed and killed, then the tumor was dissected and weighed, the repression rate (RR) was calculated according to the mean weight of tumor (MWT).RESULTS: Compared to the model group (MWT: 1.30±0.73),DDP group (MWT: 0.41+0.09, RR: 68.46%) had a significant difference in the inhibition of hepatocarcinoma H22 (P＜0.01).High dosage BSHYJDR group (MWT: 0.69+0.29, RR:46.92%) also had a significant difference in inhibition (P＜0.05), while no difference was found in low dosage BSHYJDR group (MWT: 0.85+0.34, RR: 34.62%) (P＞0.05).When DDP was combined with high dosage BSHYJDR (MWT: 0.29±0.17, RR: 77.69%) and low dosage BSHYJDR (MWT: 0.38±0.21, RR: 70.77%) respectively, we could see improvement of the inhibition effect of DDP on transplanted hepatocarcinoma H22. DDP combined with high dosage BSHYJDR had a significant difference (P＜0.001) compared to DDP, while DDP combined with low dosage BSHYJDR only had a little improvement that is not remarkable.CONCLUSION: Chinese medicine BSHYJDR in combination with chemotherapy can inhibit transplanted hepatocarcinoma in mice.
基金Supported by National Natural Science Foundation of Chi-na (NO.30200369)
文摘Objective:To investigate the antitumor effect of dendritic cell （DC） modified by gp96-peptide complexes both in vitro and in vivo.Methods:Gp96-peptide complexes were acquired from H22 liver cancer cells in mice. DC were cultured from bone marrow cells and modified by gp96-peptide complexes. Spleen lymphocytes of mice were activated by modified DC and the cytotoxicity were detected by (（）51Cr) release method. Modified DC, gp96-peptide complexes and inactivated H22 cells were injected into mice bearing H22 liver cancer cells to observe the levels of IL-10, IFN-γ in serum and the alteration of proportions of CD8+-IFNγ+ and CD8+- IL-10+ cells, CD4+-IFNγ+ and CD4+- IL-10+ cells. Results:DC modified by gp96-peptide complexes can activate spleen lymphocyte and the latter can specifically kill H22 cells but not Ehrilich ascites carcinoma cells. Modified DC can improve the host’s antitumor immune response and the proportions of Th1 cells, inhibiting tumor growth. Conclusion: Gp96-peptide complexes can activate DC effectively, making DC a good vaccine.
