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Western印迹法

Western印迹法的相关文献在1998年到2020年内共计83篇,主要集中在肿瘤学、分子生物学、细胞生物学 等领域,其中期刊论文82篇、会议论文1篇、专利文献98250篇;相关期刊43种,包括实用临床医药杂志、中国癌症杂志、世界核心医学期刊文摘:皮肤病学分册等; 相关会议1种,包括中国首届国际食管癌学术会议暨第七届全国食管癌学术会议等;Western印迹法的相关文献由389位作者贡献,包括孔祥、胡群、等等。

Western印迹法—发文量

期刊论文>

论文:82 占比:0.08%

会议论文>

论文:1 占比:0.00%

专利文献>

论文:98250 占比:99.92%

总计:98333篇

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Western印迹法

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  • 刘姗
  • 刘晓军
  • 吴梧桐
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    • 沈禹辰; 刘苗苗; 李建豪; 夏燕云; 李吉辰; 朴松林
    • 摘要: 目的:研究钙粘蛋白11(cadherin 11,CDH11)在头颈部鳞状细胞癌(head and neck squamous cell carcinoma,HNSCC)细胞中的表达情况,以及CDH11对HNSCC细胞功能的影响.方法:应用Western印迹法(Western blot)检测在HNSCC细胞系及正常细胞中CDH11的表达差异,检测应用转染技术降低CDH11表达后,HNSCC细胞中上皮间充质转化标志物表达水平的变化情况,并对转染后的细胞形态、增殖能力及侵袭能力进行测定.结果:HNSCC细胞中的CDH11及E-钙粘蛋白(E-cadherin)表达高于正常细胞,Twist家族转录因子-1(Twist family BHLH transcription fac-tor 1,Twist-1)表达低于正常细胞,提示高水平CDH11可能抑制上皮间充质转化过程.转染后,HNSCC细胞中E-钙粘蛋白表达降低,Twist-1表达升高,且细胞间粘附降低;细胞增殖能力较转染前均增强(P<0.05);细胞侵袭能力较转染前有所提高(P<0.05).结论:CDH11通过抑制HNSCC细胞的上皮间充质转化过程,进而抑制了HNSCC的增殖和侵袭行为,提示CDH11在HNSCC中可能作为抑癌基因起作用.
    • 李全; 王广; 冯艳萍
    • 摘要: 目的:探讨磷酸酶-张力蛋白基因(phosphatase and tensin homology deleted on chromosome ten,PTEN)在正常脑组织及星形细胞瘤中的表达及其意义.方法:采用免疫组织化学法及RT-PCR方法检测正常脑组织及不同分级星形细胞瘤组织中PTEN蛋白及mRNA的表达水平,探讨并分析其与星形细胞瘤组织学分级的关系,Western印迹法检测正常脑组织及星形细胞瘤脑脊液中PTEN蛋白的表达.结果:免疫组织化学方法显示PTEN在正常脑组织中阳性率较高,为90%(9/10),星形细胞瘤中阳性率较低,为47.5%(19/40),且PTEN在不同的组织学分级中,阳性率不同.RT-PCR结果显示PTEN mRNA在正常脑组织中表达较高,其相对表达量为0.861±0.072,显著高于星形细胞瘤组织中的表达(0.127±0.008),差异有统计学意义(P<0.05),并随着组织学级别增加,其表达呈降低趋势.Western印迹法结果显示PTEN蛋白在非星形细胞瘤组脑脊液中的相对表达量为1.549±0.194,高于星形细胞瘤组脑脊液中的相对表达量(0.602±0.058),差异具有统计学意义(P<0.05).结论:检测PTEN基因蛋白表达有望作为评估人星形细胞瘤生物学行为和预后的参考指标.%Objective: This study aimed to investigate the expression of phosphatase and tensin homology deleted on chromosome ten (PTEN) in human astrocytoma and its clinical signiflcance.Methods: SP immunohistochemical and RT-PCR were used to detect the expression of PTEN in normal brain and human astrocytoma. Western blot analysis were used to detect the expression of PTEN in cerebrospinal fluid (CSF) of human astrocytoma and normal brain.Results: Immunohistochemical assay showed that positive rates of PTEN in normal brain were 90% (9/10), which were higher than that in human astrocytoma 47.5% (19/40), and negatively correlated with histological diflerentiating degree. RT-PCR showed that, the relative expression levels of PTEN in normal brain were 0.861±0.072, which were higher than that in human astrocytoma (0.127±0.008), the diflerence was statistically significant (P<0.05). Western blot showed that the relative expression levels of PTEN in CSF of normal brain were 1.549±0.194, which were higher than that in human astrocytoma (0.602±0.058) (P<0.05). Conclusion: expression of PTEN can be helpful in the prediction of the biological behavior and prognosis of human astrocytoma.
    • 袁莉; 沈晓晔; 陈挺; 戴厚永; 黄新忠; 张义德
    • 摘要: Objective: To observe the change of Persephin (PSP) in renal cortex in cisplatin-induced acute kidney injury. Methods: The male C57BL/6 mice were divided into the control group and the model group. AKI was induced by subcutaneous injection of cisplatin (15mg/kg), the mice in the control group was injected by the same volume saline.Three days after cisplatin injection, the renal function and tubular structure were tested in each group.Expression of PSP was tested by real-time PCR and Western blot in renal cortex. Results: Compared with the control group, mice in the model group showed symptoms of malaise and reduced activity. Three days after cisplatin injection, the renal function, the number of tubular cast(0.63±0.62/HPF) and necrosis(3.71±1.14/HPF)were significantly increased in the model group(P<0.05).The mRNA and protein expression of PSP in the renal cortex increased in the model group (P<0.05). Conclusion: The increasing expression of PSP in the renal cortex suggests that PSP may participate in the process of AKI.%目的:观察顺铂诱导急性肾损伤(acute kidney injury,AKI)模型中肾皮质Persephin(PSP)的变化。方法:雄性C57BL/6小鼠随机分为对照组及模型组,模型组应用顺铂单次腹腔注射(15mg/kg)制备AKI小鼠模型,对照组小鼠予以同等容积的0.9%的生理盐水单次腹腔注射,造模3天后观察各组小鼠肾功能变化、肾脏病理学改变、实时PCR法及Western印记法检测肾脏皮质PSP的表达。结果:与对照组相比,模型组小鼠出现精神萎靡不振,反应迟钝,活动减少,造模后第3天尿素氮明显上升(P<0.05),肾脏病理改变中模型组肾小管管型计数(0.63±0.62个/HPF)及坏死计数(3.71±1.14个/HPF)均高于正常对照组(P<0.05)。PSP在模型组肾皮质的表达高于对照组(P<0.05)。结论:AKI模型中肾脏皮质PSP表达升高,提示PSP可能参与了AKI的病程,但其相关作用机制尚需进一步研究。
    • Mi LIU; Mei XUE; Xiao-Reng WANG; Tian-Qi TAO; Fei-Fei XU; Xiu-Hua LIU; Da-Zhuo SHI
    • 摘要: BackgroundEndoplasmic 蜂窝胃(嗯) 压力相关的 apoptosis 涉及许多心血管的疾病的 pathophysiology,并且人参属 quinquefolium saponin (PQS ) 能禁止过多嗯 cardiomyocytes 追随者 hypoxia/reoxygenation 和心肌的梗塞的压力相关的 apoptosis。然而, PQS 由禁止压力相关的 apoptosis 不是的 ER 很好的小径理解。进一步调查 PQS 的保护的效果对嗯压力相关的 apoptosis ,主要有教养的 cardiomyocytes 与 thapsigargin ( TG )被刺激,它广泛地被用来当模特儿细胞嗯应力,并且它能在足够的 concentration.MethodsPrimary 导致 apoptotic 房间死亡从新生的老鼠的有教养的 cardiomyocytes 暴露于 TG ( 1 µ ; mol/L )为 24 h 的处理,后面的 PQS 预告的处理( 160 µ ; g/mL )为有小介入的 24 h 或预告的处理, RNA 指导了 agai 生存能力和 cardiomyocytes 的 apoptosis 率被分别地数 kit-8 和流动 cytometry 的房间检测。嗯压力相关的蛋白质表示,例如调整葡萄糖的蛋白质 78 (GRP78 ) , calreticulin,津贴,真核细胞的翻译开始因素 2 α;( eIF2α ;),激活抄写因素 4 ( ATF4 ),并且 C/EBP 相应蛋白质(砍)是由西方的 blotting.ResultsBoth PQS 预告的处理和津贴的 assayed 击倒显著地禁止了 TG 导致的 cardiomyocyte apoptosis ,增加的房间生存能力,津贴和 eIF2α 的减少的 phosphorylation ;,并且减少 ATF4 和砍的蛋白质层次。PQS 预告的处理和在 cardioprotective effect.ConclusionsOur 数据击倒的津贴之间没有统计上重要的差别显示 PERK-eIF2α; -ATF4-CHOP 小径嗯应力涉及 TG 导致的 apoptosis,并且 PQS 可能通过包含这条小径的抑制的机制阻止导致 TG 的 cardiomyocyte apoptosis。这些调查结果关于 PQS 由禁止 cardiomyocyte apoptosis 的分子的机制提供新奇数据。
    • Xueshuang Mei; Hongyi Hu; Guohui Nie
    • 摘要: Objective: The aim of our study was to determine the underlying mechanism of miR-210 on regulation of the cell cycle in nasopharyngeal carcinoma cell line CNE-1, particularly through regulation of cyclin D1, under hypoxic conditions. Methods: The CNE-1 cell line was induced with hypoxia, and the expression levels of endogenic miR-210 and cyclin D1 were detected by real-time PCR and Western blotting. Next, the luciferase assay was used to confirm that cyclin D1 is a target gene for miR-210. Cell cycle and cell proliferation were detected in CNE-1 cells that were cultured under hypoxic conditions with either overexpression or knockout of miR-210 using flow cytometry and MTT assay, respectively. Results: Hypoxia induced the expression of miR-210, resulting in reduced mRNA and protein levels of cyclin D1 and repression of cyclin D1 in CNE-1 cells. Further analysis indicated that miR-210 directly binded to the 3'UTR of the cyclin D1 gene, thus regulated the expression of cyclin D1. The flow cytometry assay showed that, under hypoxic conditions, miR-210 blocked CNE-1 cells in the G1 phase, and miR-210 also inhibited the proliferation of CNE-1 cells. Conclusion: Under hypoxic conditions, miR-210 directly reduced the expression of cyclin D1, leading to CNE-1 cells blocked in G1 phase.
    • 葛建岭; 朋立超
    • 摘要: 目的观察反复给予氯胺酮对大鼠海马神经元磷酸化丝切蛋白(p-cofilin)表达的影响,探讨其参与氯胺酮导致认知功能障碍发生的机制。方法将40只2月龄Sprague-Dawley雄性大鼠随机分为氯胺酮组和0.9%氯化钠溶液组(对照组)。氯胺酮组和对照组大鼠每天分别予腹腔内注射氯胺酮(50mg/kg)或等体积的0.9%氯化钠溶液(1mL/kg),连续7d。停止注射氯胺酮2d后应用Morris水迷宫行定位航行实验和空间探索实验,检测两组大鼠的学习记忆能力,并从氯胺酮组中筛选出认知功能障碍大鼠(认知障碍组)。采用Western印迹法检测认知障碍组和对照组大鼠海马内p-cofilin和丝切蛋白(cofilin)的表达量。结果氯胺酮组实验第3、4、5天的逃逸潜伏期均显著长于对照组同时间点(P值均0.05)。认知障碍组大鼠海马内p-cofilin蛋白表达量显著低于对照组(P0.05)。结论反复给予氯胺酮可导致大鼠发生认知功能障碍,且大鼠海马内p-cofilin的蛋白表达量降低。
    • Jianwen Sun; Lijun Fan; Meining Li; Yuehong Zhang; Niuliang Cheng
    • 摘要: Objective: The aim of our study was to investigate the effect of Pin1 on the telomerase activity in human colorectal carcinoma HCT116 cells. Methods: Firstly, we transfected plasmid pGenesil-1-Pin1 (p-shRNA) using liposome (Lipofectamine 2000) into colorectal cancer HCT-116 cells to down-regulate the expression of Pin1. To detect the apoptotic rate of HCT116 cells was by cytometry (FCM). The expression of Pin1 and hTERT at RNA levels in human colorectal cancer HCT116 cells were determined by RT-PCR. To evaluate the activity of telomerase was by TRAP-silver staining. The subcellular localization and accumulative level of p-NF-κB/p65 protein at the nuclear was detected by Immunofluorescence and Western blotting. The DNA-binding activity of NF-κB/p65 was detected by electrophoretic mobility shift assay (EMSA). Results: Using liposome into colorectal cancer HCT-116 cells, and down-regulate the expression of Pin1 (0.392 ± 0.072-fold; P = 0.001), and the apoptotic rate was increased (11.40% ± 1.54%; P < 0.05). Compared with transfected p-CON cell group, in transfected p-shRNA cell group, the transcription of hTERT was lower (0.171 ± 0.060-fold; P = 0.001) by quantitative real-time RT-PCR, and the results of TRAP-silver staining analysis suggested that the telomerase activity was significantly declined (0.384 ± 0.015-fold; P < 0.05). Furthermore, it was demonstrated by Immunofluorescence that p-NF-κB/p65 had a nuclear localization, and the level of p-NF-κB/p65 protein at the nuclear was reduced with silencing the expression of Pin1 by Western blotting. Using EMSA, it was suggested that NF-κB/p65 was able to bind to hTERT promoter, and the direct interaction was declined with silencing the expression of Pin1. Conclusion: Taken together, silencing Pin1 may suppress activity of telomerase and the expression of hTERT by inhibiting NF-κB/p65 activity and reducing the combination of NF-κB/p65 and hTERT gene promoter.
    • 魏君; 杜超; 綦斌; 张萱; 宿晓云; 田宇
    • 摘要: Objective To observe the mRNA expression of ADAR2 in human glioma cell line SHG44,BT325,U251 and in normal human astrocytes(NHA),to observe the effect of phenylacetate (PA) on the expression of ADAR2 in U251 cells.Methods The level of ADAR2 mRNA in glioma cell lines SHG44,BT325,U251 and in normal human astrocytes (NHA) were detected by real-time fluorescent quantitative polymerase chain reaction (PCR) ; the change of ADAR2 mRNA in U251 cells before and after treated by PA were detected by real-time PCR.Use methyl thiazol tetrazolium (MTT) to detect proliferation of U251 cells on which PA works after 24 h,48 h and 72 h.Use Western blotting to detect ADAR2 protein expression before and after PA treated.Results The ADAR2 mRNA expression level in NHA cells was very weak ( 19.9 ± 2.2),in SHG44,BT325 and U251 cells were 35.6 ±2.8,78.8 ±3.2 and 101.3 ±3.5.After PA (3.0 and 5.0mmol/L) treatment for 24 hours,levels of ADAR2 mRNA were 60.3 ± 1.5 and 50.5 ± 1.2 (P < 0.01 ).MTT assays showed that the U251 cell numbers were significantly reduced with increasing PA concentration in a time-and dose-dependent manner (P <0.01 ).Western blotting revealed that ADAR2 protein expression was reduced after PA treatment in U251 cells.Conclusion ADAR2 showed different expression levels among different glioma cell lines.PA can inhibit the expression of ADAR2 mRNA and protein in U251 cells.%目的 观察人胶质瘤细胞株SHG44、BT325、U251和正常人脑星形细胞(NHA)中ADAR2mRNA表达水平及苯乙酸(PA)对U251细胞中ADAR2表达的影响.方法 实时荧光定量聚合酶链反应( Real-time fluorescent quantitative PCR)方法检测胶质瘤细胞中ADAR2mRNA表达水平,检测PA处理前后U251细胞中ADAR2mRNA表达水平的变化;噻唑蓝(MTT)比色法检测PA作用24、48和72 h后U251细胞增殖.Western印迹法检测PA作用前后U251细胞中ADAR2蛋白表达.结果 Real-time PCR检测显示:ADAR2 mRNA在NHA中表达极弱(19.9±2.2),在SHG44和BT325细胞中明显表达(35.6±2.8、78.8±3.2),在U251细胞中表达水平最高(101.3±3.5).PA3.0和5.0 mmol/L作用U251细胞24h后,ADAR2mRNA分别为60.3±1.5和50.5±l.2(P<0.01);MTT法检测显示PA对U251细胞的增殖呈时间和剂量依赖性抑制(P<0.01);Western印迹法显示PA可降低ADAR2蛋白表达水平.结论 在不同的胶质瘤细胞中,ADAR2mRNA表达水平不同;PA可抑制U251细胞中ADAR2mRNA和蛋白水平的表达.
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