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骨形态发生蛋白-4对肝干细胞增殖与分化的影响 被引量:2
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作者 董娟娟 曾珊 +3 位作者 欧阳淼 黄增辉 yuewen gong 申竑 《中南大学学报(医学版)》 CAS CSCD 北大核心 2011年第6期539-545,共7页
目的:探讨骨形态发生蛋白-4(BMP-4)对大鼠肝干细胞系WB-F344的增殖及分化的影响。方法:采用50 ng/mL的基因重组BMP-4作用于WB-F344细胞,以BMP-4拮抗剂Noggin(200 ng/mL)阻断BMP-4的作用为对照。在实验不同时间点,通过四甲基偶氮唑盐(MTT... 目的:探讨骨形态发生蛋白-4(BMP-4)对大鼠肝干细胞系WB-F344的增殖及分化的影响。方法:采用50 ng/mL的基因重组BMP-4作用于WB-F344细胞,以BMP-4拮抗剂Noggin(200 ng/mL)阻断BMP-4的作用为对照。在实验不同时间点,通过四甲基偶氮唑盐(MTT)比色法检测BMP-4对WB-F344增殖的影响,透射电镜下观察细胞的超微结构特征,RT-PCR检测各试验组中WB-F344细胞可能分化表型特异性分子标志物的mRNA表达。结果:细胞增殖实验显示:在不同作用时间点,BMP-4干预组的细胞吸光值均高于Noggin处理组和空白对照组。透射电镜下可观察到BMP-4干预后的WB-F344细胞具有分化良好的上皮细胞的超微结构特征。RT-PCR显示BMP-4诱导WB-F344分化后,肝干细胞的肝细胞特异性分子标志物的mRNA显著表达。结论:BMP-4可促进肝干细胞WB-F344的增殖,并诱导其向肝细胞定向分化。 展开更多
关键词 骨形态发生蛋白-4 肝干细胞 增殖 分化
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益肾活血方对嘌呤霉素氨基核苷诱导的大鼠肾病综合征的治疗作用及其机理研究
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作者 李建 闫静 +2 位作者 赵世萍 李平 yuewen gong 《中国中西医结合肾病杂志》 2007年第12期696-700,共5页
目的:探讨益肾活血方对嘌呤霉素氨基核苷(PAN)诱导的大鼠肾病综合征的治疗作用及其作用机制。方法:Wistar大鼠随机分为假手术组、PAN模型组、益肾活血方高剂量组(YHF-H)、益肾活血方中剂量组(YHF-M)、益肾活血方低剂量组(YHF-L)、蒙诺... 目的:探讨益肾活血方对嘌呤霉素氨基核苷(PAN)诱导的大鼠肾病综合征的治疗作用及其作用机制。方法:Wistar大鼠随机分为假手术组、PAN模型组、益肾活血方高剂量组(YHF-H)、益肾活血方中剂量组(YHF-M)、益肾活血方低剂量组(YHF-L)、蒙诺治疗组(FP)。采用颈静脉注射结合尾静脉加强注射PAN的方法制作肾病模型。PAN首次注射后第5、10、15、20、25和30天测定24h尿蛋白定量;31d后处死动物,做血清总蛋白、血清白蛋白、总胆固醇、三酰甘油、血清尿素氮、血清肌酐等血生化学检查、肾脏组织光学显微镜和电子显微镜检查以及逆转录聚合酶链式反应(RT-PCR)分析各组大鼠肾脏骨形态蛋白及其基因表达的情况。结果:益肾活血方能有效抑制由PAN所诱导的尿蛋白排泄增高、血清蛋白降低和血脂升高,减轻肾小管间质病变、抑制BMPRⅡ和Smad1在肾组织内的表达。结论:益肾活血方对PAN诱导的大鼠肾病综合征有治疗作用,其机制可能与调节骨形态蛋白表达有关。 展开更多
关键词 益肾活血方 肾病综合征 嘌呤霉素氨基核苷 骨形态蛋白
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肝星状细胞中细胞凋亡和存活的信号调控(英文) 被引量:2
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作者 Hong Shen Jianghong Fan +1 位作者 Geraid Minuk yuewen gong 《中南大学学报(医学版)》 CAS CSCD 北大核心 2007年第5期726-734,共9页
肝星状细胞(hepatic stellate cells,HSCs)在肝脏纤维化发生过程中起着关键作用。当正常肝脏受到损伤时,HSCs由静息状态转分化为类肌成纤维细胞,并保持这种处于激活状态的表型,它们接收到的凋亡和存活的生物信号将决定激活态HSCs的最终... 肝星状细胞(hepatic stellate cells,HSCs)在肝脏纤维化发生过程中起着关键作用。当正常肝脏受到损伤时,HSCs由静息状态转分化为类肌成纤维细胞,并保持这种处于激活状态的表型,它们接收到的凋亡和存活的生物信号将决定激活态HSCs的最终细胞寿命。HSCs凋亡的发生与一系列复杂而又相互关联的生物信号传导和调控有关,HSCs凋亡信号来自于细胞膜受体,如死亡受体、神经生长因子受体和外周型苯甲二氮卓受体(peripheral-type benzodiazepine receptor) ;以及胞浆蛋白,如Bcl-2家族蛋白和细胞周期蛋白等。HSCs存活信号受到多种激酶和细胞因子的诱导,如金属蛋白酶组织抑制剂-1(tissue inhibitors of metalloproteinase-1)、Rho/Rho激酶、血小板源生长因子(platelet-derived growth factor)、转化生长因子-β1 (transforming growth factor-β1 )和胰岛素样生长因子(insulin-like growth factor-1)等。特异性地诱导HSCs发生凋亡是治疗肝脏纤维化的直接和有效手段,虽然目前对HSCs由激活态到静息状态的转归尚需进一步研究,但诱导HSCs凋亡将是治疗肝脏纤维化和肝硬化的研究热点和主要发展方向。 展开更多
关键词 肝脏纤维化 肝星状细胞 细胞凋亡
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Glucose Metabolism in Breast Cancer and its Implication in Cancer Therapy
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作者 Ning Li Wen Tan +4 位作者 Jing Li Ping Li Simon Lee Yitao Wang yuewen gong 《International Journal of Clinical Medicine》 2011年第2期110-128,共19页
It is well known that malignant cells have accelerated glucose uptake and metabolism in order to maintain their fast proliferation rates. With the increased influx of glucose into cancer cells, glycolysis is facilitat... It is well known that malignant cells have accelerated glucose uptake and metabolism in order to maintain their fast proliferation rates. With the increased influx of glucose into cancer cells, glycolysis is facilitated through a coordinated regulation of metabolic enzymes and pyruvate consumption. Shiftting from mitochondrial oxidative phosphorylation to glycolysis and other pathways such as pentose phosphate pathway (PPP) and de novo fatty acid synthesis in the breast tumor provides not only energy but also the materials needed for cell proliferation. Glucose augmentation in tumor cells can be due to the elevated level of glucose transporter (GLUT) proteins, such as the over-expression of GLUT1 and expression of GLUT5 in breast cancers. Moreover, other factors such as hypoxia-inducible factor-1 (HIF-1), estrogen and growth factors are important modulators of glucose metabolism in the progression of breast carcinomas. Therapies targeting at the glycolytic pathway, fatty acid synthesis and GLUTs expression are currently being investigated. Restoring tumor cells to its normal glucose metabolic state would endow tumor specific and accessible treatment that targets glucose metabolism. 展开更多
关键词 BREAST Cancer GLUCOSE Transport GLYCOLYSIS FATTY Acid Synthesis MITOCHONDRIAL Metabolism
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Identifying the Targets for Treatment of Liver Fibrosis and Hepatocellular Carcinoma from Both Western Medicine and Chinese Medicine 被引量:4
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作者 yuewen gong 《Chinese Journal of Integrative Medicine》 SCIE CAS 2012年第4期245-249,共5页
Liver fibrosis and hepatocellular carcinoma (HCC) are emerging health problems worldwide. Number of death due to HCC was steadily increased during the last decade. Although liver fibrosis and HCC have been investiga... Liver fibrosis and hepatocellular carcinoma (HCC) are emerging health problems worldwide. Number of death due to HCC was steadily increased during the last decade. Although liver fibrosis and HCC have been investigated extensively, there are no successful and/or satisfactory therapies especially for patients with HCC. From our understanding of both Western medicine and Chinese medicine, it could identify the targets in liver fibrosis and HCC for intervention with Chinese medicine such as bone morphogenetic protein 4 (BMP-4). BMP-4 expression was significantly increased in both liver fibrosis and HCC and saponin class of certain Chinese herbs could regulate its expression. Therefore, BMP-4 could be one of the targets for treatment of liver fibrosis and HCC from integrative medicine. 展开更多
关键词 liver fibrosis hepatocellular carcinoma bone morphogenetic protein integrative medicine
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