幽门螺杆菌对SGC-7901细胞增殖凋亡及p27kipl表达的影响

Objective To explore the influence of Helicobacter pylori (Hp) on the proliferation, apoptosis and expression of p27kipl protein of gastric epithelial cells in vitro. Methods SC, C-7901 cell pro-liferation was examined by flow cytometry after incubation with different concentration of NCTC11637. The effect of NCTC11637 on cell apoptosis was also evaluated by flow cytometryo And the expression of p27kipl of gastric epithelial cells was detected by immunohistochemical analysis and in situ hybridization, respectively. Results Cell proliferation was enhanced when co-incubated with the Hp in low concentration (3.4 x 104 to 1.9 x 105 CFU/ml) but inhibited in higher concentration (≥4.8×106CFU/ml). However, cell apoptosis was increase when co-incubated with the Hp in high concentration (≥9.6 ×105 CFU/ml) showing concen-tration dependent picture. In addition, the co-incubation of SGC-7901 with Hp led to decrease of the expres-sion of p27kipl protein but not mRNA in a Hp concentration dependent way. Conclusion Hp could effect the gastric epithelial cells apoptosis and proliferation directly and influence the expression of p27kips protein which might facilitate gastric carcinoma.     

幽门螺杆菌对SGC-7901细胞增殖凋亡及p27kipl表达的影响

Objective To explore the influence of Helicobacter pylori (Hp) on the proliferation, apoptosis and expression of p27kipl protein of gastric epithelial cells in vitro. Methods SC, C-7901 cell pro-liferation was examined by flow cytometry after incubation with different concentration of NCTC11637. The effect of NCTC11637 on cell apoptosis was also evaluated by flow cytometryo And the expression of p27kipl of gastric epithelial cells was detected by immunohistochemical analysis and in situ hybridization, respectively. Results Cell proliferation was enhanced when co-incubated with the Hp in low concentration (3.4 x 104 to 1.9 x 105 CFU/ml) but inhibited in higher concentration (≥4.8×106CFU/ml). However, cell apoptosis was increase when co-incubated with the Hp in high concentration (≥9.6 ×105 CFU/ml) showing concen-tration dependent picture. In addition, the co-incubation of SGC-7901 with Hp led to decrease of the expres-sion of p27kipl protein but not mRNA in a Hp concentration dependent way. Conclusion Hp could effect the gastric epithelial cells apoptosis and proliferation directly and influence the expression of p27kips protein which might facilitate gastric carcinoma.     

幽门螺杆菌对SGC-7901细胞增殖凋亡及p27kipl表达的影响

Objective To explore the influence of Helicobacter pylori (Hp) on the proliferation, apoptosis and expression of p27kipl protein of gastric epithelial cells in vitro. Methods SC, C-7901 cell pro-liferation was examined by flow cytometry after incubation with different concentration of NCTC11637. The effect of NCTC11637 on cell apoptosis was also evaluated by flow cytometryo And the expression of p27kipl of gastric epithelial cells was detected by immunohistochemical analysis and in situ hybridization, respectively. Results Cell proliferation was enhanced when co-incubated with the Hp in low concentration (3.4 x 104 to 1.9 x 105 CFU/ml) but inhibited in higher concentration (≥4.8×106CFU/ml). However, cell apoptosis was increase when co-incubated with the Hp in high concentration (≥9.6 ×105 CFU/ml) showing concen-tration dependent picture. In addition, the co-incubation of SGC-7901 with Hp led to decrease of the expres-sion of p27kipl protein but not mRNA in a Hp concentration dependent way. Conclusion Hp could effect the gastric epithelial cells apoptosis and proliferation directly and influence the expression of p27kips protein which might facilitate gastric carcinoma.     

幽门螺杆菌对SGC-7901细胞增殖凋亡及p27kipl表达的影响

Objective To explore the influence of Helicobacter pylori (Hp) on the proliferation, apoptosis and expression of p27kipl protein of gastric epithelial cells in vitro. Methods SC, C-7901 cell pro-liferation was examined by flow cytometry after incubation with different concentration of NCTC11637. The effect of NCTC11637 on cell apoptosis was also evaluated by flow cytometryo And the expression of p27kipl of gastric epithelial cells was detected by immunohistochemical analysis and in situ hybridization, respectively. Results Cell proliferation was enhanced when co-incubated with the Hp in low concentration (3.4 x 104 to 1.9 x 105 CFU/ml) but inhibited in higher concentration (≥4.8×106CFU/ml). However, cell apoptosis was increase when co-incubated with the Hp in high concentration (≥9.6 ×105 CFU/ml) showing concen-tration dependent picture. In addition, the co-incubation of SGC-7901 with Hp led to decrease of the expres-sion of p27kipl protein but not mRNA in a Hp concentration dependent way. Conclusion Hp could effect the gastric epithelial cells apoptosis and proliferation directly and influence the expression of p27kips protein which might facilitate gastric carcinoma.     

幽门螺杆菌对SGC-7901细胞增殖凋亡及p27kipl表达的影响

Objective To explore the influence of Helicobacter pylori (Hp) on the proliferation, apoptosis and expression of p27kipl protein of gastric epithelial cells in vitro. Methods SC, C-7901 cell pro-liferation was examined by flow cytometry after incubation with different concentration of NCTC11637. The effect of NCTC11637 on cell apoptosis was also evaluated by flow cytometryo And the expression of p27kipl of gastric epithelial cells was detected by immunohistochemical analysis and in situ hybridization, respectively. Results Cell proliferation was enhanced when co-incubated with the Hp in low concentration (3.4 x 104 to 1.9 x 105 CFU/ml) but inhibited in higher concentration (≥4.8×106CFU/ml). However, cell apoptosis was increase when co-incubated with the Hp in high concentration (≥9.6 ×105 CFU/ml) showing concen-tration dependent picture. In addition, the co-incubation of SGC-7901 with Hp led to decrease of the expres-sion of p27kipl protein but not mRNA in a Hp concentration dependent way. Conclusion Hp could effect the gastric epithelial cells apoptosis and proliferation directly and influence the expression of p27kips protein which might facilitate gastric carcinoma.     

幽门螺杆菌对SGC-7901细胞增殖凋亡及p27kipl表达的影响

Objective To explore the influence of Helicobacter pylori (Hp) on the proliferation, apoptosis and expression of p27kipl protein of gastric epithelial cells in vitro. Methods SC, C-7901 cell pro-liferation was examined by flow cytometry after incubation with different concentration of NCTC11637. The effect of NCTC11637 on cell apoptosis was also evaluated by flow cytometryo And the expression of p27kipl of gastric epithelial cells was detected by immunohistochemical analysis and in situ hybridization, respectively. Results Cell proliferation was enhanced when co-incubated with the Hp in low concentration (3.4 x 104 to 1.9 x 105 CFU/ml) but inhibited in higher concentration (≥4.8×106CFU/ml). However, cell apoptosis was increase when co-incubated with the Hp in high concentration (≥9.6 ×105 CFU/ml) showing concen-tration dependent picture. In addition, the co-incubation of SGC-7901 with Hp led to decrease of the expres-sion of p27kipl protein but not mRNA in a Hp concentration dependent way. Conclusion Hp could effect the gastric epithelial cells apoptosis and proliferation directly and influence the expression of p27kips protein which might facilitate gastric carcinoma.     

幽门螺杆菌对SGC-7901细胞增殖凋亡及p27kipl表达的影响

Objective To explore the influence of Helicobacter pylori (Hp) on the proliferation, apoptosis and expression of p27kipl protein of gastric epithelial cells in vitro. Methods SC, C-7901 cell pro-liferation was examined by flow cytometry after incubation with different concentration of NCTC11637. The effect of NCTC11637 on cell apoptosis was also evaluated by flow cytometryo And the expression of p27kipl of gastric epithelial cells was detected by immunohistochemical analysis and in situ hybridization, respectively. Results Cell proliferation was enhanced when co-incubated with the Hp in low concentration (3.4 x 104 to 1.9 x 105 CFU/ml) but inhibited in higher concentration (≥4.8×106CFU/ml). However, cell apoptosis was increase when co-incubated with the Hp in high concentration (≥9.6 ×105 CFU/ml) showing concen-tration dependent picture. In addition, the co-incubation of SGC-7901 with Hp led to decrease of the expres-sion of p27kipl protein but not mRNA in a Hp concentration dependent way. Conclusion Hp could effect the gastric epithelial cells apoptosis and proliferation directly and influence the expression of p27kips protein which might facilitate gastric carcinoma.     

幽门螺杆菌对SGC-7901细胞增殖凋亡及p27kipl表达的影响

Objective To explore the influence of Helicobacter pylori (Hp) on the proliferation, apoptosis and expression of p27kipl protein of gastric epithelial cells in vitro. Methods SC, C-7901 cell pro-liferation was examined by flow cytometry after incubation with different concentration of NCTC11637. The effect of NCTC11637 on cell apoptosis was also evaluated by flow cytometryo And the expression of p27kipl of gastric epithelial cells was detected by immunohistochemical analysis and in situ hybridization, respectively. Results Cell proliferation was enhanced when co-incubated with the Hp in low concentration (3.4 x 104 to 1.9 x 105 CFU/ml) but inhibited in higher concentration (≥4.8×106CFU/ml). However, cell apoptosis was increase when co-incubated with the Hp in high concentration (≥9.6 ×105 CFU/ml) showing concen-tration dependent picture. In addition, the co-incubation of SGC-7901 with Hp led to decrease of the expres-sion of p27kipl protein but not mRNA in a Hp concentration dependent way. Conclusion Hp could effect the gastric epithelial cells apoptosis and proliferation directly and influence the expression of p27kips protein which might facilitate gastric carcinoma.     

幽门螺杆菌对SGC-7901细胞增殖凋亡及p27kipl表达的影响

Objective To explore the influence of Helicobacter pylori (Hp) on the proliferation, apoptosis and expression of p27kipl protein of gastric epithelial cells in vitro. Methods SC, C-7901 cell pro-liferation was examined by flow cytometry after incubation with different concentration of NCTC11637. The effect of NCTC11637 on cell apoptosis was also evaluated by flow cytometryo And the expression of p27kipl of gastric epithelial cells was detected by immunohistochemical analysis and in situ hybridization, respectively. Results Cell proliferation was enhanced when co-incubated with the Hp in low concentration (3.4 x 104 to 1.9 x 105 CFU/ml) but inhibited in higher concentration (≥4.8×106CFU/ml). However, cell apoptosis was increase when co-incubated with the Hp in high concentration (≥9.6 ×105 CFU/ml) showing concen-tration dependent picture. In addition, the co-incubation of SGC-7901 with Hp led to decrease of the expres-sion of p27kipl protein but not mRNA in a Hp concentration dependent way. Conclusion Hp could effect the gastric epithelial cells apoptosis and proliferation directly and influence the expression of p27kips protein which might facilitate gastric carcinoma.     

外周血T淋巴细胞HLA-B27检测辅助诊断强直性脊柱炎

目的 探讨外周血T淋巴细胞HLA-B27和血清多项免疫指标检测对强直性脊梓炎(AS)的辅助诊断价值.方法 采用流式细胞仪对52例疑似AS患者外周血T淋巴细胞HLA-B27表达进行检测,结合临床资料对AS作出诊断;对其中37例男性病例血清免疫球蛋白IgG、IgA、IgM,补体C3、C4及C反应蛋白(CRP)含量进行免疫比浊法测定.结果 52例疑似AS患者共检测出 HLA-B27+13例(男性12例,女性1例),确诊AS患者12人(男性患者11人,女性1人),包括男性HLA-B27+AS患者9例(最小年龄12岁,最大58岁),男性HLA-B27-AS 2例(分别为20岁和78岁),女性HLA-B27-AS 1例为(9岁),男性AS确诊患者的HLA-B27阳性率为82%.除补体C3外,男性AS组IgG、IgA、IgM、C4及CRP均较男性非AS组高(P＜0.05).结论 AS患者体液免疫功能明显活跃,HLA-B27检测有助于临床资料疑似病例的AS诊断.     

细胞因子对HLA-B27启动子的调节作用及其在强直性脊柱炎发病机制中的意义

目的： 构建含HLA-B27启动子的HeLa稳定转染细胞株，观察7种细胞因子对HLA-B27启动子及其上游NF-κB及ISRE顺式作用元件活性的调节作用，探讨强直性脊柱炎（AS）等B27相关疾病的发生机制。方法:转染HeLa细胞，抗生素筛选单克隆构建含HLA-B27启动子的稳定转染细胞株。构建HeLa-B27稳定细胞株和HeLa-NF-κB稳定细胞株，在瞬时转染pISRE-luc的HeLa细胞中加入白细胞介素1α（IL-1α）、 白细胞介素1β（IL-1β）、 肿瘤坏死因子α（TNF-α）、干扰素α（IFN-α）、干扰素β（IFN-β）、 干扰素γ（IFN-γ）和转化生长因子β（TGF-β），观察7种细胞因子对B27启动子及其上游NF-κB和ISRE作用元件的调节作用。另外在HeLa-B27 稳定细胞株培养液中同时加入3种细胞因子单克隆抗体和相应细胞因子，观察其对启动子活性的调节作用。结果:TNF-α、IFN-α、IFN-β 和 IFN-γ 均能明显增强HeLa细胞B27启动子活性。细胞培养96 h 后，IFN-β为最强的启动子诱导剂（5.4倍，P<0.05）；细胞培养8 h 内，TNF-α、IL1-α 和 IL1-β,可诱导NF-κB的活性增加30倍左右（P<0.05），IFN-α 和IFN-β 可诱导ISRE的活性增加12倍左右（P<0.05），抗TNF-α 抗体对于I类IFN 增加的B27 启动子活性没有明显的抑制作用。结论：TNF-α和IFN 可通过结合于B27 启动子中各种转录因子结合元件调控HLA-B27启动子的转录活性，IFN-β 可能在强直性脊柱炎等B27 相关的脊柱关节病的发病机制中起着重要作用。     

HLA-B27等位基因和亚型与强直性脊柱炎关系研究进展

大量的研究证明,强直性脊柱炎(AS)是与人类白细胞抗原(HLA)相关性最强的疾病。AS的发病与HLA-B27阳性密切相关,并与B7、B13、B40等几个等位基因有一定关系。HLA-B位点有42个等位基因,其中HLA-B27具有高度多态性,含有22个以上的亚型,不同亚型的碱基序列间只有个别差异。B27亚型在AS患者中的分布因地区和种族上的差别而不同,在中国主要以B2704和B2705为主,但以B2705分布最广。这几年大量的人B27转基因鼠实验证明AS与B27的关联性。     

PcDNA3.0/p27~(kip1)真核表达质粒对小鼠哮喘模型Th1/Th2的影响

目的:探讨细胞周期负性调控蛋白PcDNA3.0/p27kip1重组真核表达质粒转染小鼠哮喘模型对Th1/Th2比例失衡的调节作用。方法:小鼠各10只分为A组(正常对照组)、B组(哮喘模型组)、C组(质粒治疗组)三组。用卵蛋白致敏法构建小鼠哮喘模型,以本实验室构建的PcDNA3.0/p27kip1重组真核表达质粒经静脉转染小鼠哮喘模型,36小时后Western blot检测肺组织中p27蛋白表达量;流式细胞仪分析小鼠脾CD4+、CD8+T细胞比例;ELISA检测小鼠血清IL-4、IL-5、IL-13、IFN-γ水平。结果:B组与A组比较,哮喘发病后肺p27蛋白表达量明显降低;脾CD4+T细胞显著增高而CD8+T细胞显著降低;血清IL-4、IL-5、IL-13水平明显升高而IFN-γ明显降低。C组与B组比较,肺p27蛋白表达量明显增加,脾CD4+T细胞比例显著降低而CD8+T细胞显著升高;血清IL-4、IL-5、IL-13水平明显降低而IFN-γ明显升高。结论:PcDNA3.0/p27kip1静脉给药可在哮喘模型肺组织中表达,并通过基因干预调控细胞周期的方式调节Th1/Th2比例失衡,为哮喘防治提出了新思路。     

p27基因和蛋白表达的调控及其在肿瘤发生机制中的作用

p27-kip1基因编码的P27蛋白作为细胞周期蛋白依赖性激酶抑制剂,在细胞周期进程中起重要的负调节作用,同时作为一个新的肿瘤抑制基因,与肿瘤的发生、发展及预后密切相关,近年来调节P27机制的新发现为肿瘤治疗开辟了新的道路。     

强直性脊柱炎患者HLA-B27位点等位基因相关抗原的表达

目的：探讨强直性脊柱炎（AS）患者HLA-B27位点等位基因相关抗原的表达。方法：采用补体依赖性微量淋巴细胞毒法检测418例脊柱关节炎（SpAS）患者和30例正常对照HLA-B27相关抗原。结果：418例SpAS患者73例被确诊为AS,Bw6、B27（47）、B27和B7/B27/B73/B81抗原阳性率分别为31%、28%、25%和22%。在AS中,B27阳性组与B27阴性组间有不同分布,两组B27（47）、B27、B7三种等位基因有统计学意义（P〈0.01）。在66例B27阳性组中,除B13与Bw6成负相关外,Bw4与B27（47）、B7与B27之间等均成明显的正相关。结论：在AS患者中,B13与Bw6、B60/61/47/48/81（13）,B7与B27,Bw4与B27（47）,Cw1与B42B45表达联锁失衡,B27并不是AS易感的唯一因素,其他基因位点可能起增强（如Cw1及Cw2）或抑制（如B13）AS发生的作用。