目的通过观察用药后COX-2、Bcl-2和Survivin的变化,探讨丹皮酚(paeonol,Pae)诱导Eca-109食管癌裸鼠移植瘤凋亡的机制。方法体外培养食管癌Eca-109细胞,裸鼠皮下接种Eca-109细胞建立裸鼠移植瘤动物模型,36只荷瘤裸鼠随机分为6组,分别为...目的通过观察用药后COX-2、Bcl-2和Survivin的变化,探讨丹皮酚(paeonol,Pae)诱导Eca-109食管癌裸鼠移植瘤凋亡的机制。方法体外培养食管癌Eca-109细胞,裸鼠皮下接种Eca-109细胞建立裸鼠移植瘤动物模型,36只荷瘤裸鼠随机分为6组,分别为模型对照组、Pae不同剂量组(25、50、100、200mg·kg-1)和阳性药对照组(cisplatin,CD-DP,5mg·kg-1)。治疗2wk后处死裸鼠,剥取瘤体称瘤重并计算抑瘤率。用末端脱氧核苷酸转移酶介导的dUTP缺口末端标记(TUNEL)法检测肿瘤细胞凋亡。免疫组化S-P法检测移植瘤组织COX-2、Bcl-2和Survivin的表达。结果Pae50、100和200mg·kg-1组和CDDP5mg·kg-1组均能明显抑制裸鼠皮下肿瘤的生长,抑瘤率分别为23·54%、27·91%、34·46%和58·71%,与模型组比较差异均有显著性(P<0·05orP<0·01)。TUNEL染色可发现棕褐色的凋亡细胞呈散在或片状分布,Pae各剂量组的凋亡指数(apoptosis index,AI)分别为(11·02±2·58)%、(19·80±2·77)%、(24·48±4·35)%和(27·13±4·39)%,与模型组(4·81±0·83)%比较,差异均有显著性(P<0·05orP<0·01)。免疫组化结果显示,Pae能明显抑制移植瘤组织COX-2、Bcl-2和Survivin的表达(P<0·05 or P<0·01)。结论Pae能抑制Eca-109食管癌裸鼠移植瘤生长、诱导凋亡而发挥抗肿瘤作用,其机制可能与下调COX-2的表达并抑制Bcl-2和Sur-vivin的表达有关。展开更多
Objective： To investigate the anti-tumor activity and molecular mechanism of Tonglian Decoction （通莲汤, TLD） on esophageal carcinoma Eca109 cells. Methods： Ecal09 cells were treated with TLD and its separated for...Objective： To investigate the anti-tumor activity and molecular mechanism of Tonglian Decoction （通莲汤, TLD） on esophageal carcinoma Eca109 cells. Methods： Ecal09 cells were treated with TLD and its separated formulae, including the clearing-heat and detoxification formula （Q）, activating-blood and promoting-qi formula （H） and nourishing-yin and blood formula （Z）. Cell proliferation was measured using the 3-（4,5-dimethyl-2- thiazolyl）-2,5-diphenyl-2-H-tetrazolium bromide assay, cell morphology was observed using a microscope, the cell cycle was measured using flow cytometry and the activity of the nuclear factor-kappa B （NF- K B） signal pathway was detected by Western blot. Results： The half maximal inhibitory concentrations of TLD, Q and H were 386, 771 and 729 rag/L, respectively. TLD, Q and H significantly inhibited cell proliferation, with 69.43%, 60.84% and 61.90% of treated cells in the G1 phase of the cell cycle. The percentage of cells in S phase increased significantly after treatment with TLD, Q, and H compared with the control group （P〈0.05）, and TLD showed the strongest effect. Z had no influence on the cell cycle compared with the control group （P〉0.05）. Western blot detection indicated slight differences in the inhibition of the NF- K B pathway by the different formulae. TLD formula strongly inhibited IKK β, NF- K B, interleukin-6 and tumor necrosis factor-α expression compared with the control group. Conclusions： TLD inhibited Eca109 cell proliferation by arresting cells in S phase. The possible mechanism might be related to inhibiting the NF- K B transduction cascade. The combination of the herbs found in the three separate formulae, H, Q and Z, work synergistically in TLD to produce the inhibitory effects of TLD treatment on Eca109 proliferation.展开更多
文摘目的通过观察用药后COX-2、Bcl-2和Survivin的变化,探讨丹皮酚(paeonol,Pae)诱导Eca-109食管癌裸鼠移植瘤凋亡的机制。方法体外培养食管癌Eca-109细胞,裸鼠皮下接种Eca-109细胞建立裸鼠移植瘤动物模型,36只荷瘤裸鼠随机分为6组,分别为模型对照组、Pae不同剂量组(25、50、100、200mg·kg-1)和阳性药对照组(cisplatin,CD-DP,5mg·kg-1)。治疗2wk后处死裸鼠,剥取瘤体称瘤重并计算抑瘤率。用末端脱氧核苷酸转移酶介导的dUTP缺口末端标记(TUNEL)法检测肿瘤细胞凋亡。免疫组化S-P法检测移植瘤组织COX-2、Bcl-2和Survivin的表达。结果Pae50、100和200mg·kg-1组和CDDP5mg·kg-1组均能明显抑制裸鼠皮下肿瘤的生长,抑瘤率分别为23·54%、27·91%、34·46%和58·71%,与模型组比较差异均有显著性(P<0·05orP<0·01)。TUNEL染色可发现棕褐色的凋亡细胞呈散在或片状分布,Pae各剂量组的凋亡指数(apoptosis index,AI)分别为(11·02±2·58)%、(19·80±2·77)%、(24·48±4·35)%和(27·13±4·39)%,与模型组(4·81±0·83)%比较,差异均有显著性(P<0·05orP<0·01)。免疫组化结果显示,Pae能明显抑制移植瘤组织COX-2、Bcl-2和Survivin的表达(P<0·05 or P<0·01)。结论Pae能抑制Eca-109食管癌裸鼠移植瘤生长、诱导凋亡而发挥抗肿瘤作用,其机制可能与下调COX-2的表达并抑制Bcl-2和Sur-vivin的表达有关。
基金Supported by the Natural Science Fundation of Hebei Province of China(No.H2013209053)Scientific and Technological Project of Administration of Traditional Chinese Medicine of Hebei Province,China(No.2014185)
文摘Objective： To investigate the anti-tumor activity and molecular mechanism of Tonglian Decoction （通莲汤, TLD） on esophageal carcinoma Eca109 cells. Methods： Ecal09 cells were treated with TLD and its separated formulae, including the clearing-heat and detoxification formula （Q）, activating-blood and promoting-qi formula （H） and nourishing-yin and blood formula （Z）. Cell proliferation was measured using the 3-（4,5-dimethyl-2- thiazolyl）-2,5-diphenyl-2-H-tetrazolium bromide assay, cell morphology was observed using a microscope, the cell cycle was measured using flow cytometry and the activity of the nuclear factor-kappa B （NF- K B） signal pathway was detected by Western blot. Results： The half maximal inhibitory concentrations of TLD, Q and H were 386, 771 and 729 rag/L, respectively. TLD, Q and H significantly inhibited cell proliferation, with 69.43%, 60.84% and 61.90% of treated cells in the G1 phase of the cell cycle. The percentage of cells in S phase increased significantly after treatment with TLD, Q, and H compared with the control group （P〈0.05）, and TLD showed the strongest effect. Z had no influence on the cell cycle compared with the control group （P〉0.05）. Western blot detection indicated slight differences in the inhibition of the NF- K B pathway by the different formulae. TLD formula strongly inhibited IKK β, NF- K B, interleukin-6 and tumor necrosis factor-α expression compared with the control group. Conclusions： TLD inhibited Eca109 cell proliferation by arresting cells in S phase. The possible mechanism might be related to inhibiting the NF- K B transduction cascade. The combination of the herbs found in the three separate formulae, H, Q and Z, work synergistically in TLD to produce the inhibitory effects of TLD treatment on Eca109 proliferation.
