The aneuploldy inducing activity of a Chinese medicinal herb, Tripterygium hypoglaucum (level) Hutch (THH) were investigated by means of thhree cytogenetic end points, namely C-mitotic (CM) effects, micronucleus (MN) ...The aneuploldy inducing activity of a Chinese medicinal herb, Tripterygium hypoglaucum (level) Hutch (THH) were investigated by means of thhree cytogenetic end points, namely C-mitotic (CM) effects, micronucleus (MN) and parallel chromosome structural aberration (CA) analyses in vivo. The experiments were performed on mouse bone marrow cells. THH showed similar gentoxic effects to colchicine (COL) in CM, MN and CA analyses; positive CM effects were observed accompanied with increases of mitotic index and frequencies of C-mltotic cells as well as decreased frequencies of anaphase in all of the THH-treated groups. The compound showed a positive MN response in bone marrow polychromatic erythrocytes but was negative in CA analyses. The preliminary results suggested that THH is an aneuploldy inducer in mouse bone marrow cells under present experiment conditions.展开更多
AIM: To investigate the effect of Tripterygium hyp-oglaucum Hutch (THH) on the assembly and disassembly process of tubulin and its possible mode of action.METHODS: In vitro porcine brain tubulin assembly assay was...AIM: To investigate the effect of Tripterygium hyp-oglaucum Hutch (THH) on the assembly and disassembly process of tubulin and its possible mode of action.METHODS: In vitro porcine brain tubulin assembly assay was employed to analyze the inhibitory effects of THH at different concentrations (0.05 μg/L, 0.07 μg/L, 0.09μg/L). Colchicine (0.0025 mmol/L, 0.0050 mmol/L, 0.0075 mmol/L) was used as a positive control.RESULTS: THH could significantly inhibit the assembly of isolated porcine brain tubulin at all tested concentrations.CONCLUSION: THH is capable of inducing aneuploidy in mammals via tubulin polymerization inhibition pathway and may pose a genetic risk to human beings.展开更多
目的为探讨昆明山海棠总生物碱(alkaloids from Tripterygium Hypoglaucum Hutch,THHa)抗肺癌机制,研究THHa诱导肺腺癌A549细胞凋亡与细胞周期改变的关系。方法应用形态学观察、DNA凝胶电泳、流式细胞仪检测分析肺腺癌A549细胞凋亡及细...目的为探讨昆明山海棠总生物碱(alkaloids from Tripterygium Hypoglaucum Hutch,THHa)抗肺癌机制,研究THHa诱导肺腺癌A549细胞凋亡与细胞周期改变的关系。方法应用形态学观察、DNA凝胶电泳、流式细胞仪检测分析肺腺癌A549细胞凋亡及细胞周期改变。结果THHa能够诱导肺腺癌A549细胞凋亡并主要作用于细胞周期S期(S期细胞增多)。结论THHa可能通过诱导细胞凋亡而抑制A549细胞增殖,这种作用与细胞周期有关,这些有助于将来肺癌治疗方案的合理设计。展开更多
文摘The aneuploldy inducing activity of a Chinese medicinal herb, Tripterygium hypoglaucum (level) Hutch (THH) were investigated by means of thhree cytogenetic end points, namely C-mitotic (CM) effects, micronucleus (MN) and parallel chromosome structural aberration (CA) analyses in vivo. The experiments were performed on mouse bone marrow cells. THH showed similar gentoxic effects to colchicine (COL) in CM, MN and CA analyses; positive CM effects were observed accompanied with increases of mitotic index and frequencies of C-mltotic cells as well as decreased frequencies of anaphase in all of the THH-treated groups. The compound showed a positive MN response in bone marrow polychromatic erythrocytes but was negative in CA analyses. The preliminary results suggested that THH is an aneuploldy inducer in mouse bone marrow cells under present experiment conditions.
基金Supported by the National Natural Science Foundation of China,No,30560061 the International Scientific Cooperation Project of Yunnan Province.
文摘AIM: To investigate the effect of Tripterygium hyp-oglaucum Hutch (THH) on the assembly and disassembly process of tubulin and its possible mode of action.METHODS: In vitro porcine brain tubulin assembly assay was employed to analyze the inhibitory effects of THH at different concentrations (0.05 μg/L, 0.07 μg/L, 0.09μg/L). Colchicine (0.0025 mmol/L, 0.0050 mmol/L, 0.0075 mmol/L) was used as a positive control.RESULTS: THH could significantly inhibit the assembly of isolated porcine brain tubulin at all tested concentrations.CONCLUSION: THH is capable of inducing aneuploidy in mammals via tubulin polymerization inhibition pathway and may pose a genetic risk to human beings.
文摘目的为探讨昆明山海棠总生物碱(alkaloids from Tripterygium Hypoglaucum Hutch,THHa)抗肺癌机制,研究THHa诱导肺腺癌A549细胞凋亡与细胞周期改变的关系。方法应用形态学观察、DNA凝胶电泳、流式细胞仪检测分析肺腺癌A549细胞凋亡及细胞周期改变。结果THHa能够诱导肺腺癌A549细胞凋亡并主要作用于细胞周期S期(S期细胞增多)。结论THHa可能通过诱导细胞凋亡而抑制A549细胞增殖,这种作用与细胞周期有关,这些有助于将来肺癌治疗方案的合理设计。