Confluent layers of ESMC were stimulated by 10nM ET – 1; expressi

Confluent layers of ESMC were stimulated by 10nM ET – 1; expression of C…
Extrasynaptic alpha6 – beta – delta subtype of gamma – aminobutyric acid type A receptors (GABA – 因为 A – R) mediate tonic inhibition in cerebellar granule cells (CGC). We have shown that AMPA receptor (AMPA – R) activation up – regulates GABA – A – R delta mRNA expression in cultured GCGs.

AMPA – R…
We recently demonstrated that erythropoietin(EPO)protects cardiomyocytes from apoptosis during myocardial ischemia and reperfusion(I/R).The objective of the present study was to investigate the role of heme oxygenase-1(HO-1)in the anti-apoptotic effects of EPO.Primary cultures of neonatal mouse c…
The effect of angiotensinⅡ(AngⅡ),an important regulator of cardiovascular system,on cardiac Silmitasertib分子重量 contractility is not clear.In Langendorff mouse hearts,perfused at constant pressure,AngⅡ(3 nmol/L)transiently decreased(P
Our previous data demonstrated that imatinib,a selective small-molecule protein kinase inhibitor, stimulated histone H2AX phosphorylation(Ser 139) through caspase-3/Mstl pathway in chronic myelogenous leukemia(CML) cells(K562 cells).The

H2AX phosphorylation(Ser 139) is required for apoptosis of K…
目的探讨沙眼衣原体pORF5蛋白对IL-1β和IL-18等促炎性细胞因子的诱生作用,并初步分析其分子机制。方法采用分子生物学方法制备、纯化沙眼衣原体pORF5蛋白,用3~361μg/mL不同浓度刺激THP-1细胞,并于0h、8h、1 6h、24h、36h收集上清及细胞,ELISA检测IL-1β和IL-18的含量;QRT-PCR检测NALP3炎性体和IL-1β和IL-1 8 mRNA表达水平;分别用NALP3 siRNA、ASC siRNA转染
Objective: To investigate the protective effect of mitogen-activated protein kinase family(MAPKS)in myocar-dial injury in severely scalded rats. Methods: Wistar rats were used in this study and them were inflicted with30% Ⅲdegree scald on the back. The samples of plasma 更多 and myocardial tissue wer…
目的研究肠三叶因子(ITF)促进肠上皮细胞增殖的信号转导机制。方法分离提取肠上皮细胞膜, 以膜结合法测定细胞膜 ITF 受体蛋白酪氨酸激酶(PTK)活性。在体外培养的肠上皮细胞株 IEC-6上,观察在 ITF 的刺激下以及使用信号转导阻断剂 PD098059、SB202190、SB202474分别阻断丝裂素活化蛋白激酶家系(MAPKs)中3种激酶[细胞外信号调节激酶(ERKs)、蛋白激酶

p38(p38)、应激活化蛋白激酶(SAPK)] 后 IEC-6 DNA 合成率及 MAPK 活性的变化。结果 ITF 受体具有 PTK 活性,在 ITF 的刺激下 ITF 受体 PTK 活性、IEC-…
目的:观察p38MAPK信号转导通路在17β雌二醇和雷洛昔芬促成骨细胞增殖和分化过程中的作用。方法:取第一继代 BALB/c小鼠头盖骨成骨细胞,药物刺激组分别加人不同浓度1β-雌二醇或雷洛昔芬;含阻断剂组预先添加不同浓度的SB202190(p38MAPK 的阻断剂)阻断信号转导通路,再加17β-雌二醇或雷洛昔芬,作用72小时后用MTT法与PNPP法测定细胞的增殖能力和碱性磷酸酶活性。结果:加入雌激素或雷洛昔芬后,成骨细胞的增殖和分化明显增强,与空白对照组比较差异具有显著性意义(P<0.05);阻断p38MAPK信号转导通路后,细胞增殖分化受到明显抑制,5未阻断组比较差异具有非常显著性意义(P<...
目的:combretastatin A4是一种血管靶向药物,它通过抑制微管聚集,杀死内皮细胞, 降低肿瘤血管血液流量,从而导致肿瘤的坏死。MAPKs 是一类可传导胞外信号进入细胞核内, 导致核内基因表达和细胞功能发生改变的蛋白激酶。普遍认为,MAPKs 家族中的 ERK1/2在微管靶向药物所介导的细胞毒性中起保护作用,而 p38 MAPK 则促进了细胞的调亡。本研究旨在探究 MAPKs 蛋白激酶在 combretastatin A4介导的细胞毒性所起的作用。方法:用 western blot 法检测特异性蛋白量的变化,用流式细胞术检测药物对细胞周期的影响,用 SRB 法检测细胞毒性作用。结果:…
目的检测新基因 URG11在胃癌细胞系及胃癌组织中的表达;阐明 URG11和胃癌细胞转移的关系以及促进胃癌细胞转移的分子机制。方法 (1)Western blot 和 RT-PCR 检测 URG11在多种胃癌细胞系和永生化胃黏膜上皮细胞 GES 中的表达;(2)免疫组织化学染色检测 URG11在100例胃癌和癌旁组织中的表达;(3)构建 URG11的 RNAi 载体,转染胃癌细胞系 MKN28并筛选得到低表达 URG11的细胞系; (4)黏附实验、侵袭实验、裸鼠体内肝转移实验检测转染细胞体外、体内转移能力;(5)Western blot 检测转染细胞 mmp2,mmp9,p38,ERK1…

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