目的探讨Delta-like protein 3(DLL3)与晚期小细胞肺癌(SCLC)顺铂/依托泊苷(EP)方案化疗敏感度及预后的关系。方法选取64例明确诊断为Ⅲ/Ⅳ期的SCLC患者,采用免疫组织化学法检测DLL3在SCLC石蜡包埋组织中的表达情况;χ~2检验分析DLL3表...目的探讨Delta-like protein 3(DLL3)与晚期小细胞肺癌(SCLC)顺铂/依托泊苷(EP)方案化疗敏感度及预后的关系。方法选取64例明确诊断为Ⅲ/Ⅳ期的SCLC患者,采用免疫组织化学法检测DLL3在SCLC石蜡包埋组织中的表达情况;χ~2检验分析DLL3表达与化疗疗效的关系,Kaplan-Meier和Cox多因素分析DLL3表达及其他因素对晚期SCLC患者无进展生存期(PFS)和总生存期(OS)的影响。结果在84.1%(54/64)的SCLC组织中可检测到DLL3表达,其表达与患者性别、年龄、吸烟史、分期无相关性(P>0.05)。DLL3高表达组的EP方案化疗有效率及疾病控制率均低于DLL3低表达组(P<0.05);DLL3低表达组的无进展生存期长于DLL3高表达组,差异有统计学意义(P<0.05)。Cox多因素分析结果显示DLL3表达、肿瘤分期、肿瘤直径是晚期SCLC患者PFS的独立预后因素,肿瘤分期是OS的独立预后因素。结论DLL3表达与晚期SCLC EP方案化疗反应率及PFS相关,可能成为预测化疗敏感度的生物标志物。DLL3表达对于晚期SCLC患者的远期预后无预测价值。展开更多
目的:研究活血通络汤对家兔激素性股骨头缺血性坏死造模过程中Notch1、DLL3和HERP1的影响。方法:将192只日本大耳兔随机分为预防治疗组(A组)、治疗组(B组)、模型对照组(C组)、空白对照组(D组),每组48只,A、B、C组运用贺西京造模法造模。...目的:研究活血通络汤对家兔激素性股骨头缺血性坏死造模过程中Notch1、DLL3和HERP1的影响。方法:将192只日本大耳兔随机分为预防治疗组(A组)、治疗组(B组)、模型对照组(C组)、空白对照组(D组),每组48只,A、B、C组运用贺西京造模法造模。A组第2周开始喂服中药饲料,B组第3周开始喂服中药饲料,C、D组均喂服等量普通饲料。于第2、5、8周末检测血Notch1、DLL3和HERP1 m RNA表达水平,同时做股骨头病理镜检,计算空骨陷窝率。结果:Notch1、DLL3和HERP1表达值各组间比较不同时间段分析及空骨陷窝率分析具有统计学意义(P<0.05,P<0.01)。结论:活血通络汤可限制Notch1和HERP1的表达,下调DLL3表达水平,降低空骨陷窝率,促进骨坏死的修复。展开更多
Background The notch signal pathway is important in the development of both tumor-associated macrophages(TAMs)and stomach cancer,but how Notch signaling affects TAMs in stomach cancer is barely understood.Methods The ...Background The notch signal pathway is important in the development of both tumor-associated macrophages(TAMs)and stomach cancer,but how Notch signaling affects TAMs in stomach cancer is barely understood.Methods The expressions of Notch1,Notch2,Notch3,Notch4,hes family bHLH transcription factor 1(Hes1),and delta-like canonical Notch ligand 3(DLL3)were detected by Western blot and the expressions of interleukin(IL)-10,IL-12,and IL1-b were detected using enzyme-linked immunosorbent assay after the co-culture of macrophages and stomach-cancer cells.The proliferation and migration of cancer cells were detected using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay and scratch assay,respectively,and the cell cycle was detected using Annexin V/propidium iodide assay.The protein interactions with DLL3 were detected using co-immunoprecipitation and mass spectrometry.Results The co-culture of macrophages and stomach-cancer cells MKN45 and BGC823 could enhance cell proliferation accompanied by the activation of Notch1/Notch2 signaling and upregulation of DLL3.Notch signaling gamma-secretase inhibitor(DAPT)blocked this process.The overexpression of DLL3 in stomach-cancer cells could promote the proliferation of cancer cells,enhance the activation of Notch1/Notch2 signaling,induce the expression of IL-33,lead to the degradation of galectin-3–binding protein(LG3BP)and heat shock cognate 71 kDa protein(HSPA8),and result in elevated IL-1b,IL-12,and IL-10 secretion by macrophages.Higher expression of DLL3 or IL-33 could lead to a lower survival rate based on University of California,Santa Cruz Xena Functional Genomics Explorer and The Cancer Genome Atlas data set.Conclusions This is evidence that DLL3 regulates macrophages in stomach cancer,suggesting that DLL3 may be a novel and potential target for stomach-cancer therapy.展开更多
The adsorption behavior and mechanism of D ll 3 resin for Dy（lII） was investigated by using the method of resin adsorption. Experimental results show that the optimum medium pH of adsorption of D 113 resin for Dy^3-...The adsorption behavior and mechanism of D ll 3 resin for Dy（lII） was investigated by using the method of resin adsorption. Experimental results show that the optimum medium pH of adsorption of D 113 resin for Dy^3- is pH=6.00 in the HAc-NaAc medium. The static adsorption capacity of D113 resin for Dy3. is 292.7 mg·g^-1. The optimum eluant is 0.5 mol,L-~ HC1. The adsorption rate constant is k298=6.8× 10-6s^-1. The apparent activation energy of D113 resin for Dy（Ⅲ） is 14.79 kJ·mol^-1. The adsorption behavior of D113 resin for Dy（Ⅲ） obeys the Freundlich isotherm. The adsorption parameters of thermodynamic are AH=14.48 kJ·mol^-1,△S=54.69 J·mol^-1,K^-1, △G= 1.82 kJ·mol^-1.The adsorption mechanism of Dll3 resin for Dy^3- was confirmed by chemical analysis and IR spectra.展开更多
文摘目的探讨Delta-like protein 3(DLL3)与晚期小细胞肺癌(SCLC)顺铂/依托泊苷(EP)方案化疗敏感度及预后的关系。方法选取64例明确诊断为Ⅲ/Ⅳ期的SCLC患者,采用免疫组织化学法检测DLL3在SCLC石蜡包埋组织中的表达情况;χ~2检验分析DLL3表达与化疗疗效的关系,Kaplan-Meier和Cox多因素分析DLL3表达及其他因素对晚期SCLC患者无进展生存期(PFS)和总生存期(OS)的影响。结果在84.1%(54/64)的SCLC组织中可检测到DLL3表达,其表达与患者性别、年龄、吸烟史、分期无相关性(P>0.05)。DLL3高表达组的EP方案化疗有效率及疾病控制率均低于DLL3低表达组(P<0.05);DLL3低表达组的无进展生存期长于DLL3高表达组,差异有统计学意义(P<0.05)。Cox多因素分析结果显示DLL3表达、肿瘤分期、肿瘤直径是晚期SCLC患者PFS的独立预后因素,肿瘤分期是OS的独立预后因素。结论DLL3表达与晚期SCLC EP方案化疗反应率及PFS相关,可能成为预测化疗敏感度的生物标志物。DLL3表达对于晚期SCLC患者的远期预后无预测价值。
文摘目的:研究活血通络汤对家兔激素性股骨头缺血性坏死造模过程中Notch1、DLL3和HERP1的影响。方法:将192只日本大耳兔随机分为预防治疗组(A组)、治疗组(B组)、模型对照组(C组)、空白对照组(D组),每组48只,A、B、C组运用贺西京造模法造模。A组第2周开始喂服中药饲料,B组第3周开始喂服中药饲料,C、D组均喂服等量普通饲料。于第2、5、8周末检测血Notch1、DLL3和HERP1 m RNA表达水平,同时做股骨头病理镜检,计算空骨陷窝率。结果:Notch1、DLL3和HERP1表达值各组间比较不同时间段分析及空骨陷窝率分析具有统计学意义(P<0.05,P<0.01)。结论:活血通络汤可限制Notch1和HERP1的表达,下调DLL3表达水平,降低空骨陷窝率,促进骨坏死的修复。
基金supported by the National Natural Science Foundation of China[81971903 to Y.L.]the National Key R&D Program of China,Synthetic Biology Research[2019YFA0903802 to Y.N.]the Innovative Experiment Program of College Students of Guangdong Province,China[No.S202012121166,202112121330,202112121335].
文摘Background The notch signal pathway is important in the development of both tumor-associated macrophages(TAMs)and stomach cancer,but how Notch signaling affects TAMs in stomach cancer is barely understood.Methods The expressions of Notch1,Notch2,Notch3,Notch4,hes family bHLH transcription factor 1(Hes1),and delta-like canonical Notch ligand 3(DLL3)were detected by Western blot and the expressions of interleukin(IL)-10,IL-12,and IL1-b were detected using enzyme-linked immunosorbent assay after the co-culture of macrophages and stomach-cancer cells.The proliferation and migration of cancer cells were detected using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay and scratch assay,respectively,and the cell cycle was detected using Annexin V/propidium iodide assay.The protein interactions with DLL3 were detected using co-immunoprecipitation and mass spectrometry.Results The co-culture of macrophages and stomach-cancer cells MKN45 and BGC823 could enhance cell proliferation accompanied by the activation of Notch1/Notch2 signaling and upregulation of DLL3.Notch signaling gamma-secretase inhibitor(DAPT)blocked this process.The overexpression of DLL3 in stomach-cancer cells could promote the proliferation of cancer cells,enhance the activation of Notch1/Notch2 signaling,induce the expression of IL-33,lead to the degradation of galectin-3–binding protein(LG3BP)and heat shock cognate 71 kDa protein(HSPA8),and result in elevated IL-1b,IL-12,and IL-10 secretion by macrophages.Higher expression of DLL3 or IL-33 could lead to a lower survival rate based on University of California,Santa Cruz Xena Functional Genomics Explorer and The Cancer Genome Atlas data set.Conclusions This is evidence that DLL3 regulates macrophages in stomach cancer,suggesting that DLL3 may be a novel and potential target for stomach-cancer therapy.
基金the Natural Science Foundation of Zhejiang Province(No.201027)Foundation of Zhejiang Provincial Education Bureau(No.20040551)Zhoushan Science.Technology Bureau(No.04114)
文摘The adsorption behavior and mechanism of D ll 3 resin for Dy（lII） was investigated by using the method of resin adsorption. Experimental results show that the optimum medium pH of adsorption of D 113 resin for Dy^3- is pH=6.00 in the HAc-NaAc medium. The static adsorption capacity of D113 resin for Dy3. is 292.7 mg·g^-1. The optimum eluant is 0.5 mol,L-~ HC1. The adsorption rate constant is k298=6.8× 10-6s^-1. The apparent activation energy of D113 resin for Dy（Ⅲ） is 14.79 kJ·mol^-1. The adsorption behavior of D113 resin for Dy（Ⅲ） obeys the Freundlich isotherm. The adsorption parameters of thermodynamic are AH=14.48 kJ·mol^-1,△S=54.69 J·mol^-1,K^-1, △G= 1.82 kJ·mol^-1.The adsorption mechanism of Dll3 resin for Dy^3- was confirmed by chemical analysis and IR spectra.
