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盐浓度对FUS蛋白相分离的调控研究
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作者 陈家媛 王艳伟 《生物过程》 2024年第2期89-97,共9页
肉瘤融合蛋白(Fused in sarcoma, FUS)是来自异质核糖核蛋白家族的RNA结合蛋白。FUS在细胞内参与了DNA损伤修复,RNA剪接、转录、翻译等多种生理过程,这些过程与其生理条件下通过液液相分离(liquid-liquid phase separation, LLPS)形成... 肉瘤融合蛋白(Fused in sarcoma, FUS)是来自异质核糖核蛋白家族的RNA结合蛋白。FUS在细胞内参与了DNA损伤修复,RNA剪接、转录、翻译等多种生理过程,这些过程与其生理条件下通过液液相分离(liquid-liquid phase separation, LLPS)形成的类液滴状无膜细胞结构密切相关。在这个过程中FUS通过LLPS形成的生理性液滴状结构可能会老化成为病理性的聚集体,如水凝胶、包涵体和淀粉样纤维等。并且这些病理性聚集体被发现与肌萎缩性侧索硬化症(Amyotrophic lateral sclerosis, ALS)、额颞叶变性(Frontotemporal lobe degeneration, FTLD)等多种神经退行性疾病相关。本文进一步研究了影响FUS发生LLPS和病理性沉淀的相关因素,我们发现FUS蛋白LLPS和形成病理性聚集体是蛋白质浓度依赖的。在低蛋白浓度下FUS不会发生相分离,随着蛋白浓度的升高FUS蛋白开始发生LLPS现象,但是当蛋白浓度继续升高时则会形成淀粉样纤维聚集体。值得注意的是,这个过程受到盐浓度的显著影响,无盐和低盐浓度下发生LLPS的FUS蛋白,却在中、高盐浓度时迅速形成病理性的不规则聚集体。在FUS蛋白的LLPS过程中随着时间的变化液滴会不断变大,液滴在不同溶液中的生长效率为:无盐 > KCl > NaCl。 展开更多
关键词 fuS 液液相分离 病理性聚集体
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Role of glutathione transferase in phase separation of FUS and TAF15 in neurons
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作者 Kiyoung Kim 《Neural Regeneration Research》 SCIE CAS 2025年第7期1999-2000,共2页
Amyotrophic lateral sclerosis(ALS)is a progressive neurodegenerative disorder characterized by the degeneration of motor neurons in the brain and spinal cord,leading to muscle weakness,paralysis,and ultimately death(C... Amyotrophic lateral sclerosis(ALS)is a progressive neurodegenerative disorder characterized by the degeneration of motor neurons in the brain and spinal cord,leading to muscle weakness,paralysis,and ultimately death(Cleveland and Rothstein,2001).Frontotemporal lobar degeneration(FTLD)is a neurodegenerative disease affecting the frontal and temporal lobes of the brain,leading to changes in behavior,personality,and language(Van Langenhove et al.,2012).Both ALS and FTLD are classified as proteinopathies in which abnormal protein aggregation and accumulation in neurons contribute to the disease pathogenesis.Fused in sarcoma(FUS)is a DNA/RNA-binding protein involved in various cellular processes,including transcriptional regulation,RNA splicing,and DNA repair.Mutations in the FUS gene have been linked to familial ALS,highlighting the importance of FUS in the disease pathogenesis(Vance et al.,2009).In ALS and FTLD,aberrant post-translational modifications(PTMs)of FUS,such as phosphorylation,acetylation,and methylation,have been implicated in the promotion of FUS aggregation and neurotoxicity(Choi et al.,2023).Therefore,understanding the regulatory mechanisms of FUS PTMs is crucial for developing targeted therapies against these diseases. 展开更多
关键词 DEGENERATION fuS AGGREGATION
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A Network Pharmacology Analysis of Cang Fu Dao Tan Formula for the Treatment of Obese Polycystic Ovary Syndrome 被引量:10
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作者 CAI Meng-Cheng JIN Yong-Sheng +1 位作者 YU Chao-Qin CHENG Wen 《Digital Chinese Medicine》 2020年第3期148-162,共15页
Objective To explore the potential molecular targets of Cang Fu Dao Tan Formula(CFDTF)in the treatment of obese polycystic ovary syndrome(PCOS)using network pharmacology and bioinformatic approaches.Methods The potent... Objective To explore the potential molecular targets of Cang Fu Dao Tan Formula(CFDTF)in the treatment of obese polycystic ovary syndrome(PCOS)using network pharmacology and bioinformatic approaches.Methods The potential blood-entry active compounds and targets of CFDTF were retrieved from the Traditional Chinese Medicine Systems Pharmacology Database and Analysis Platform(TCMSP),and obese PCOS related gene targets were retrieved from GeneCard databases.A protein-protein interaction(PPI)network of CFDTF component-targets and obese PCOS diseasetargets was constructed using STRING.Gene Ontology(GO)and Kyoto Encyclopedia of Genes and Genomes(KEGG)pathway analysis of the intersection network were conducted using a Bioconductor database.Results In total,114 active compounds were screened according to oral bioavailability(OB)and drug similarity(DL),and 328 targets related to these constituents were obtained.Further,2559 target genes directly related to obese PCOS were obtained from the GeneCard databases,and 82 genes were obtained from the intersection of the component-target and disease-target PPI network.These genes were mainly involved in response to steroid hormones,nutrient levels and lipopolysaccharide as well as in other biological processes.Their molecular functions were mainly related to nuclear receptor activity,phosphatase binding and cytokine activity,and they were enriched in the cytoplasm,cell membrane and membrane region.Conclusions CFDTF consists of 114 active compounds that are responsible for its pharmacodynamic effects.It mainly regulates the AGE-RAGE signaling pathway in diabetic complications,bladder cancer,and hepatitis B and in other signaling networks.These findings provide certain theoretical and scientific basis for the treatment of obese PCOS with Chinese medicine. 展开更多
关键词 cang fu Dao Tan Formula(CFDTF) Polycystic ovary syndrome(PCOS) Network pharmacology QUERCETIN AGE-RAGE signaling pathway
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枫蓼肠胃康联合5⁃FU抑制IL⁃6/STAT3通路治疗结肠炎相关性结肠癌的实验研究
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作者 汪倩如 钟立璠 黄凌 《海南医学院学报》 2023年第18期1361-1366,共6页
目的:探讨枫蓼肠胃康联合5⁃氟尿嘧啶给药对结肠炎相关性结肠癌小鼠的治疗作用及机制。方法:建立结肠炎相关性结肠癌小鼠模型,经枫蓼肠胃康和5⁃氟尿嘧啶给药后,观察小鼠的行为及活动情况;HE染色观察小鼠结肠组织的病理学变化;采用Western... 目的:探讨枫蓼肠胃康联合5⁃氟尿嘧啶给药对结肠炎相关性结肠癌小鼠的治疗作用及机制。方法:建立结肠炎相关性结肠癌小鼠模型,经枫蓼肠胃康和5⁃氟尿嘧啶给药后,观察小鼠的行为及活动情况;HE染色观察小鼠结肠组织的病理学变化;采用Western blot检测小鼠结肠组织在IL⁃6/STAT3通路相关蛋白的表达。结果:联合给药组小鼠的存活率明显提高,且小鼠肠壁增厚及间质炎症情况明显减轻。Western blot结果显示经造模后小鼠结肠组织中P⁃STAT3及IL⁃6的表达水平明显升高,联合给药后,抑制了IL⁃6/STAT3通路中Cyclin D1、CDK4和Bcl⁃2蛋白表达,上调了Bax的表达(P<0.05)。结论:枫蓼肠胃康联合5⁃氟尿嘧啶可抑制IL⁃6/STAT3通路来发挥对结肠炎相关性结肠癌的抑制作用。 展开更多
关键词 结肠炎相关性结肠癌 枫蓼肠胃康 5⁃fu IL⁃6/STAT3
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Clinical Research on Use of Oxaliplcrtin in Combination with HCPT, LV and 5FU in a Regimen for Advanced Gastric Cancer
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作者 GuoqingHu QiangFu +6 位作者 MaolinJin JieLi LiangxiPan YuxianBai HuaijinWang JianweiZhang DingYu 《Chinese Journal of Clinical Oncology》 CSCD 2004年第5期336-341,共6页
OBJECTIVE To observe the effects and adverse reactions of a OXA-HCPT LV/5FU 3 regimen for patients with advanced gastric cancer.METHODS OHLF3 regimen: OXA 130 mg/m^2iv d 1, HCPT6 mg/m^2, iv d 1-5, LV 200 mg/m2iv 2 h f... OBJECTIVE To observe the effects and adverse reactions of a OXA-HCPT LV/5FU 3 regimen for patients with advanced gastric cancer.METHODS OHLF3 regimen: OXA 130 mg/m^2iv d 1, HCPT6 mg/m^2, iv d 1-5, LV 200 mg/m2iv 2 h followed by a 5FU 400 mg/m2 iv bolus and 5FU 600mg/m2 iv d 1-3, were given, every 21 days as 1 cycle. Assessment of the tumor was conducted after 3 cycles and the effective cases were confirmed after 4 weeks.RESULTS Among 39 patients, 36 were actually evaluable. Overall response rates (CR + PR} were 50%' the major adverse reactions were mild hematological toxicity, nausea and vomiting and peripheral nerve abnormalities.CONCLUSION The OHLF 3 regimen using OXA and HCPT is effective and results in mild toxicity when used in combined chemotherapy for advanced gastric cancer. 展开更多
关键词 临床研究 HCPT LV 5fu 服药法 老年性 胃癌 肿瘤 OXA
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Prokaryotic expression, purification of a novel candidate tumor suppressor gene FUS1 and characterization of its polyclonal antibodies
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作者 Dong-Mei Zhang Han-Shuo Yang +7 位作者 Xin-Yu Zhao Wen Zhu Zhi-Hua Feng Yang Wan Zhi-Wei Zhao Ming-Hai Tang Nong-Yu Huang Yu-Quan Wei 《Journal of Biomedical Science and Engineering》 2010年第4期397-404,共8页
FUS1 is a novel candidate tumor suppressor gene identified in human chromosome 3p21.3. Its expression showed significantly reduction or even loss in lung cancer and other types of cancers. In order to further investig... FUS1 is a novel candidate tumor suppressor gene identified in human chromosome 3p21.3. Its expression showed significantly reduction or even loss in lung cancer and other types of cancers. In order to further investigate the biological function of FUS1 protein, FUS1 cDNA from MRC-5 cells was amplified by RT-PCR and cloned into prokaryotic expression vector pQE-30. The recombinant expression plasmids were transformed into M15 strain and grown at 20℃ or 37℃. SDS–PAGE analysis revealed that the accumulation of the recombinant protein FUS1 (rFUS1) in inclusion body forms reached maxium amount when induced with 0.5 mM IPTG for 5 h at 37℃. The inclusion bodies were solubilized in 2M urea and purified by a 6 &#215;His tagged affinity column under denaturing condition. The purified rFUS1 was identified by electrospray ionization-mass spectrometry (ESI-MS) and tested for purity by HPLC chromatography. The purified rFUS1 proteins were then used to immunize rabbits to obtain anti-human FUS1 polyclonal antibodies, which were suitable to detect both the recombinant exogenous FUS1 and the endogenous FUS1 from tissues and cells by western blot and immunohistochemistry, Available purified rFUS1 proteins and self-prepared polyclonal antibodies against FUS1 may provide effective tools for further studies on biological function and application of FUS1. 展开更多
关键词 fuS1 POLYCLONAL Antibody PROKARYOTIC Expression RECOMBINANT Protein Tumor SUPPRESSOR Gene
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Can China Make Movies More Than Flying Kung Fu Warriors?
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作者 Jose Alberto Limas G 《China's Foreign Trade》 2011年第23期93-93,共1页
Chinese movies have helped me to understand China and its people; they reflect their hopes, their fears, their traditions, their views of their own world,… but they are also valuable in themselves and provide a compl... Chinese movies have helped me to understand China and its people; they reflect their hopes, their fears, their traditions, their views of their own world,… but they are also valuable in themselves and provide a complete different view of the world to foreign eyes. 展开更多
关键词 view can China Make Movies More Than Flying Kung fu Warriors
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The Embodiment of American Elements In Oriental Story of Kung Fu Panda
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作者 Li Yihui Zhang Chengzhi 《International English Education Research》 2014年第12期56-62,共7页
This thesis aims at the study of the American elements in oriental story Kung Fu Panda which was made by DreamWorks of Hollywood. Firstly, the thesis shows what the basic classic American characteristics are and the d... This thesis aims at the study of the American elements in oriental story Kung Fu Panda which was made by DreamWorks of Hollywood. Firstly, the thesis shows what the basic classic American characteristics are and the definition of American Dream, as well as some basic study on Hollywood's operation of movies. Then, it analyzes the above traits in Kung Fu Panda, the embodiment of American elements in Kung Fu Panda and the recipe for Hollywood's manufacturing success. At last, based on the analyses which have been pointed out, this thesis tries to arrive at the conclusion that although with an oriental-story setting, Kung Fu Panda is still American-styled and at the same time, this thesis gives some suggestive strategies that can help Chinese movie industry step out of the awkward situation. 展开更多
关键词 American character American dream Kung fu Panda Chinese movie industry
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Effects of a Combination of Fu Zi and Rou Gui on Intestinal Neurotransmitters and Microflora in Rats with Slow Transit Constipation
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作者 Yuchuan LI Yuanzhe ZHANG 《Agricultural Biotechnology》 CAS 2023年第3期79-86,91,共9页
[Objectives] This study was carried out to explore the combined effects of Fu Zi(Radix Aconiti Lateralis Praeparata, the secondary root of perennial herbaceous plant Acontium carmichaeli Dehx. of family Ranunculaceae)... [Objectives] This study was carried out to explore the combined effects of Fu Zi(Radix Aconiti Lateralis Praeparata, the secondary root of perennial herbaceous plant Acontium carmichaeli Dehx. of family Ranunculaceae) and Rou Gui(Cortex Cinnamomi, the bark of Cinnamamunz cassia Presl of family Lauraceae) on intestinal neurotransmitters and microflora in rats with slow transit constipation(STC). [Methods] Experimental rats were given loperamide hydrochloride by gavage to induce STC, and then treated with Fu Zi alone, Rou Gui alone, a combination of Fu Zi and Rou Gui(2:1 w/w), and prucalopride, respectively, for 14 days. Meanwhile, the general condition, the time to first black stool and the rate of intestinal propulsion of rats in each group were observed after STC was induced and after drug treatment, and the pathological changes in rat colon were observed via hematoxylin-eosin(HE) staining, and the levels of colonic 5-hydroxytryptamine(HT), vasoactive intestinal peptide(VIP) and substance P(SP) were detected by ELISA, and the changes in intestinal flora were detected by 16S rRNA Real-time PCR. [Results] Compared with healthy rats, the time to first black stool and the rate of intestinal propulsion, colonic 5-HT and SP levels significantly decreased(p<0.01), while their colonic VIP level significantly increased(p<0.01). Compared with STC rats, the time to first black stool, the rate of intestinal propulsion, colonic 5-HT and SP levels in Fu Zi-Rou Gui(2:1) treated rats and prucalopride treated rats significantly increased(p<0.01), while their colonic VIP level significantly decreased(p<0.01). There was no significant difference in alpha diversity between healthy rats and STC rats. However, analysis on beta diversity revealed that there were differences in microflora structure and composition between them. Compared with healthy rats, the relative abundance of Firmicutes and Proteobacteria in STC rats significantly increased, while that of Bacteroidetes decreased. Compared with STC rats, the relative abundance of Proteobacteria decreased and that of Bacteroidetes and Firmicutes increased in Fu Zi-Rou Gui(2:1) treated rats;the relative abundance of Bacteroidetes and Proteobacteria decreased while that of Firmicutes increased in Fu Zi treated rats;the relative abundance of Proteobacteria decreased while that of Bacteroidetes increased in Rou Gui treated rats;the relative abundance of Firmicutes and Proteobacteria decreased while that of Bacteroidetes increased in prucalopride treated rats. The intestinal flora in rats of all groups was dominated by Lactobacillus spp. and other genera of anaerobic bacteria. Compared with healthy rats, the relative abundance of Lactobacillus spp. and Clostridium spp. in STC rats decreased, while those of Blautia spp. and Ruminococcus spp. and Allobaculum spp. increased. Compared with STC rats, the relative abundance of Lactobacillus spp. in all rats treated with drugs increased. [Conclusions] The combination of Fu Zi and Rou Gui(2:1) can effectively improve intestinal motility in STC rats by regulating intestinal microbial community and the levels of colonic neurotransmitters. 展开更多
关键词 Slow transit constipation(STC) fu Zi-Rou Gui Intestinal motility NEUROTRANSMITTERS Intestinal microflora
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Fus依赖ac4C修饰调控促进宫颈癌细胞增殖
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作者 金泽源 李咏梅 《天津医科大学学报》 2023年第1期15-20,共6页
目的:探讨Fus RNA结合蛋白(Fus)影响宫颈癌细胞增殖的机制。方法:通过MTT实验观察Fus对宫颈癌细胞HeLa增殖的影响;采用RT-qPCR和Western印迹观察人N-乙酰转移酶10(NAT10)对Fus表达的影响;利用RNA免疫沉淀实验(RIP)检测Fus mRNA的富集情... 目的:探讨Fus RNA结合蛋白(Fus)影响宫颈癌细胞增殖的机制。方法:通过MTT实验观察Fus对宫颈癌细胞HeLa增殖的影响;采用RT-qPCR和Western印迹观察人N-乙酰转移酶10(NAT10)对Fus表达的影响;利用RNA免疫沉淀实验(RIP)检测Fus mRNA的富集情况;通过RNA稳定性实验观察NAT10对Fus mRNA稳定性的影响;基于生物信息学软件PACES预测Fus mRNA上的ac4C修饰位点,构建含有Fus mRNA上ac4C修饰位点的野生型和突变型的EGFP报告质粒,利用EGFP-reporter实验和乙酰化RIP(ac4C-RIP)确定Fus mRNA上发生ac4C修饰位点;最后通过挽救实验观察NAT10介导Fus对宫颈癌细胞增殖的影响。结果:Fus促进宫颈癌HeLa细胞增殖(tFus=14.06,tsh R-Fus=5.74,均P<0.05);Fus蛋白和mRNA的表达水平随NAT10表达增加而增加(tNAT10=10.71,tsh R-NAT10-1=13.17,tsh R-NAT10-2=7.65,均P<0.05);RIP实验结果提示Fus mRNA与NAT10蛋白间存在相互作用(t=4.20,P<0.05),且NAT10过表达细胞中Fus mRNA具有较高ac4C修饰水平(t=30.62,P<0.05);另外,相对于载体对照细胞,NAT10过表达细胞中Fus mRNA的稳定性增高(P<0.01);发现Fus mRNA的925~939序列中的胞嘧啶为ac4C修饰位点;挽救实验结果显示NAT10介导Fus促进宫颈癌细胞的增殖(t=9.67、6.71,P<0.05)。结论:Fus mRNA被NAT10催化发生ac4C修饰,Fus表达水平被上调,继而促进宫颈癌细胞的增殖。 展开更多
关键词 宫颈癌 ac4C fuS NAT10
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基于电子凸轮的纸尿裤包装袋封口控制系统设计
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作者 汪岚 《红河学院学报》 2024年第5期124-127,共4页
针对传统纸尿裤封装生产线封口效率低、封口规格固定等问题,设计了一种基于电子凸轮的纸尿裤包装袋封口控制系统。将PLC FU5X-80MT、运动控制器FU5-80SSC、MR-JE系列伺服驱动器和HG-SN系列伺服电机通过SSCNETⅢ/H光纤总线相连,搭建了控... 针对传统纸尿裤封装生产线封口效率低、封口规格固定等问题,设计了一种基于电子凸轮的纸尿裤包装袋封口控制系统。将PLC FU5X-80MT、运动控制器FU5-80SSC、MR-JE系列伺服驱动器和HG-SN系列伺服电机通过SSCNETⅢ/H光纤总线相连,搭建了控制系统硬件平台。基于五次多项式插补法设计了轴位移的电子凸轮曲线,通过修改电子凸轮曲线即可达到封口规格可调的目的。实测结果表明,该电子凸轮控制系统可自动封口多种规格的纸尿裤包装袋,且封口误差小于5mm、封口合格率大于97%,完全满足企业实际封口需求,实现了纸尿裤产品的柔性封口,具有较好的应用前景。 展开更多
关键词 电子凸轮 封口控制系统 PLCfu5X-80MT fu5-80SSC SSCNETⅢ/H 五次多项式
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大剂量醛氢叶酸+5FU持续滴注48小时(双周疗法)治疗晚期大肠癌的临床研究 被引量:115
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作者 张力 林忠 +5 位作者 夏忠军 陈丽昆 陈茹琴 姜文奇 何友兼 管忠震 《癌症》 SCIE CAS CSCD 北大核心 2000年第4期296-299,共4页
目的 :评价大剂量醛氢叶酸 +5FU持续滴注 48小时 (双周疗法 )治疗晚期大肠癌的客观疗效及毒副反应。方法 :本临床研究采用大剂量醛氢叶酸 +5FU持续滴注 48小时 ,每两周重复一次 (双周疗法 )的方案治疗5 2例晚期大肠癌病人 ,所有病人均接... 目的 :评价大剂量醛氢叶酸 +5FU持续滴注 48小时 (双周疗法 )治疗晚期大肠癌的客观疗效及毒副反应。方法 :本临床研究采用大剂量醛氢叶酸 +5FU持续滴注 48小时 ,每两周重复一次 (双周疗法 )的方案治疗5 2例晚期大肠癌病人 ,所有病人均接受 4疗程化疗。结果 :CR 2例 ,PR 15例 ,NC 18例 ,PD 17例 ,有效率为32 6 9%。病人的主要毒副反应为外周静脉炎、粘膜炎、腹泻、恶心和呕吐、骨髓抑制、脱发等。除外周静脉炎较严重外 ,其余毒性均为Ⅰ~Ⅱ度 ,病人耐受良好。结论 :大剂量醛氢叶酸 +5FU持续滴注 48小时 (双周疗法 )治疗晚期大肠癌疗效较好 ,方案是安全的 ,病人耐受性良好 ,值得在临床上推广使用。 展开更多
关键词 晚期大肠癌 大剂量 溶氢叶酸 5fu 药物疗法
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5FU8小时静滴联合CF、卡铂治疗晚期鼻咽癌的临床研究 被引量:5
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作者 李宇红 何友兼 +1 位作者 黄慧强 刘冬耕 《癌症》 SCIE CAS CSCD 北大核心 1999年第3期295-296,317,共3页
目的:根据5FU、CF药代动力学特点,设计5FU连续8小时静滴,CF100mg,在5FU静滴第0、4、8小时3次静推的CF/5FU给药方案,联合卡铂对晚期鼻咽癌患者进行临床研究,重点摸索该联合化疗方案的剂量限制性毒性... 目的:根据5FU、CF药代动力学特点,设计5FU连续8小时静滴,CF100mg,在5FU静滴第0、4、8小时3次静推的CF/5FU给药方案,联合卡铂对晚期鼻咽癌患者进行临床研究,重点摸索该联合化疗方案的剂量限制性毒性及5FU的最大耐受剂量(MTD)。方法:将符合入选条件的病例分组,每组35例。5FU剂量从500mg/(m2·d)开始,以125mg/(m2·d)逐渐递增,直至最大耐受剂量,CF300mg、卡铂300~350mg/m2剂量固定不变。结果:共21例晚期鼻咽癌患者进入该临床试验,5FU的最大耐受剂量为1000mg/(m2·d),口腔粘膜炎是该联合化疗方案的主要剂量限制性毒性。初步观察该方案有较率为762%。结论:5FU连续8小时静滴与CF、卡铂联合化疗可提高5FU剂量强度,推荐Ⅱ期临床试用时5FU剂量为750~875mg/(m2·d),共5天,3~4周重复一次。该方案对晚期鼻咽癌有较高缓解率,但确切疗效尚待进一步证实。 展开更多
关键词 氟尿嘧啶 鼻咽肿瘤 卡铂 5fu CF 药物疗法
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三氧化二砷对人AFP阳性胃癌细胞株FU97的作用及其机制 被引量:4
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作者 郏雁飞 汪运山 +4 位作者 周芳 胡安拉 马晓丽 肖东杰 苏占涛 《肿瘤防治研究》 CAS CSCD 北大核心 2008年第3期169-172,共4页
目的研究三氧化二砷(As2O3)抑制AFP阳性胃癌(alpha-fetoprotein-producing gastric carcinoma,APGC)细胞株FU97增殖、诱导凋亡及其机制。方法MTT法检测药物效应;DNA凝胶电泳和流式细胞仪(FCM)检测细胞凋亡;化学发光法、实时荧光定量PCR... 目的研究三氧化二砷(As2O3)抑制AFP阳性胃癌(alpha-fetoprotein-producing gastric carcinoma,APGC)细胞株FU97增殖、诱导凋亡及其机制。方法MTT法检测药物效应;DNA凝胶电泳和流式细胞仪(FCM)检测细胞凋亡;化学发光法、实时荧光定量PCR及ELISA检测AFP、STAT3、VEGF表达变化。结果As2O3可明显抑制FU97细胞增殖,且呈时间和浓度依赖关系;DNA凝胶电泳显示出典型的凋亡特征性梯状条带;FCM检测在细胞周期G1期前出现亚二倍体凋亡峰;细胞周期分析显示G2/M期阻滞;化学发光法、免疫细胞化学法、实时荧光定量PCR以及ELISA结果证实As2O3可下调FU97细胞AFP、VEGF、STAT3基因的表达。结论As2O3可抑制FU97细胞的增殖、阻滞细胞周期进程诱导凋亡。同时通过下调AFP、VEGF、STAT3基因的表达阻止APGC的恶性进程。 展开更多
关键词 三氧化二砷 fu97 细胞凋亡 AFP阳性胃癌 AFP
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便携式输液泵输注5Fu的应用与观察 被引量:10
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作者 范纪云 周如贤 +1 位作者 赵九红 陈艳丽 《现代肿瘤医学》 CAS 2005年第1期144-144,共1页
关键词 输液泵 氟尿嘧啶(5fu) 持续输注 套管针
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FUS1和IL-12双基因真核共表达质粒的构建及对A549细胞促凋亡作用研究 被引量:2
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作者 张冬梅 杨寒朔 +3 位作者 朱文 冯志华 邓洪新 魏于全 《四川大学学报(医学版)》 CAS CSCD 北大核心 2009年第4期569-574,共6页
目的构建FUS1和人IL-12双基因真核共表达质粒并在肺癌A549细胞中检测基因表达及诱导细胞凋亡作用。方法采用RT-PCR技术从人肺成纤维细胞MRC-5中逆转录扩增全长FUS1基因,通过PCR技术从pORF-hIL-12质粒中扩增含双亚基的全长IL-12基因。FUS... 目的构建FUS1和人IL-12双基因真核共表达质粒并在肺癌A549细胞中检测基因表达及诱导细胞凋亡作用。方法采用RT-PCR技术从人肺成纤维细胞MRC-5中逆转录扩增全长FUS1基因,通过PCR技术从pORF-hIL-12质粒中扩增含双亚基的全长IL-12基因。FUS1和IL-12分别经酶切后定向插入真核细胞双顺反子载体pVITRO2的多克隆位点中,酶切和测序鉴定双基因共表达质粒pVITRO2-FUS1-IL-12的构建。以pVITRO2-FUS1-IL-12转染肺癌A549细胞,通过RT-PCR、ELISA和Western blot方法检测目的基因的表达,以Hoechst33258染色及流式细胞术验证pVITRO2-FUS1-IL-12在体外的促凋亡作用。结果酶切和测序分析表明成功构建了双基因真核共表达质粒pVITRO2-FUS1-IL-12,在转染后的细胞中同时检测到了FUS1和IL-12的表达,两种基因在双基因表达载体上的表达量基本不受影响。双基因共表达质粒pVITRO2-FUS1-IL-12具有明显诱导肺癌细胞凋亡的作用。结论成功构建pVITRO2-FUS1-IL-12双基因真核共表达质粒,为肺癌的多基因联合治疗提供了又一新的思路和方法。 展开更多
关键词 肺癌 fuS1 IL-12 真核共表达载体 联合基因治疗
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基因芯片分析筛选BEL-7402与BEL-7402/FU细胞中的差异miRNA表达基因 被引量:3
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作者 殷杰 杨晓燕 +4 位作者 虞佳 向琼 李倩 唐惠芳 雷小勇 《国际病理科学与临床杂志》 CAS 2012年第5期374-378,共5页
目的:探讨2种肝癌细胞BEL-7402细胞及BEL-7402/FU细胞中差异表达的miRNA并对其基因表达谱进行生物学信息分析。方法:采用TRIzol一步法提取BEL-7402细胞及BEL-7402/FU细胞的总RNA,并纯化mRNA,反转录合成荧光分子Hy3标记的cDNA探针,与基... 目的:探讨2种肝癌细胞BEL-7402细胞及BEL-7402/FU细胞中差异表达的miRNA并对其基因表达谱进行生物学信息分析。方法:采用TRIzol一步法提取BEL-7402细胞及BEL-7402/FU细胞的总RNA,并纯化mRNA,反转录合成荧光分子Hy3标记的cDNA探针,与基因芯片杂交;采用Genepix Pro 6.0图像分析软件对芯片图像进行分析,把图像信号转化为数字信号,然后以差异为2倍的标准来确定差异表达基因。结果:在333个基因表达谱的筛选中,发现有2个基因表达水平显著上调,331个基因表达水平显著下调。结论:miR-122,miR-195等基因组对表达肝癌细胞耐药基因表达谱有显著的影响,可能参与肝癌耐药的发生、发展。 展开更多
关键词 基因芯片 差异表达 BEL-7402细胞 BEL-7402 fu细胞 MIRNA
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P-gp170、cytokeratin及nm23在人涎腺粘液表皮样癌MEC-1/5Fu耐药细胞中的表达 被引量:2
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作者 惠延平 李焰 +2 位作者 吴军正 王映梅 马福成 《实用口腔医学杂志》 CAS CSCD 北大核心 2003年第5期418-420,共3页
目的 :探讨人涎腺粘液表皮样癌耐药细胞株MEC 1/ 5Fu细胞的耐药机制。方法 :应用免疫组织化学SP方法观察该细胞及其亲本细胞中P 糖蛋白 (P gp170 )、cytokeratin(CK)及nm 2 3的表达。 结果 :P gp170在MCE 1/ 5Fu细胞中的阳性表达率为 95... 目的 :探讨人涎腺粘液表皮样癌耐药细胞株MEC 1/ 5Fu细胞的耐药机制。方法 :应用免疫组织化学SP方法观察该细胞及其亲本细胞中P 糖蛋白 (P gp170 )、cytokeratin(CK)及nm 2 3的表达。 结果 :P gp170在MCE 1/ 5Fu细胞中的阳性表达率为 95 .1% ,明显高于亲本细胞的阳性表达率 12 .3 % (P <0 .0 5 ) ,而CK与nm2 3在MEC 1/ 5Fu细胞与亲本细胞中的表达率分别达 90 %以上 ,无显著差异 (P >0 .0 5 )。结论 :MEC 1/5Fu细胞具有多药耐药 (MDR)表型 ,其耐药性的产生主要是由P 展开更多
关键词 P-gpl70 CYTOKERATIN NM23 涎腺 粘液表皮样癌 耐药性 MDR MEC-1/5fu
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奥沙利铂联合大剂量CF/5-FU持续滴注治疗晚期大肠癌临床研究 被引量:1
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作者 张英 潘达超 +2 位作者 梁启廉 温继育 谢杰荣 《实用肿瘤杂志》 CAS 北大核心 2003年第6期478-480,共3页
目的 观察奥沙利铂 (L - OHP)联合大剂量亚叶酸钙 CF/ 5 - FU持续 4 8小时静滴治疗晚期大肠癌的客观疗效及不良反应。方法 本研究采用奥沙利铂联合大剂量 CF/ 5 - FU持续静脉滴注 4 8小时治疗晚期大肠癌 4 2例 (L - OHP 130 mg/ m2 静... 目的 观察奥沙利铂 (L - OHP)联合大剂量亚叶酸钙 CF/ 5 - FU持续 4 8小时静滴治疗晚期大肠癌的客观疗效及不良反应。方法 本研究采用奥沙利铂联合大剂量 CF/ 5 - FU持续静脉滴注 4 8小时治疗晚期大肠癌 4 2例 (L - OHP 130 mg/ m2 静注 2小时 ,d1 ,CF 2 0 0 m g/ m2 静脉输注 2小时 ,d2 ,后接 5 - FU 0 .5 g静推 10分钟 ,再接 5 -FU3.0 g/ m2用输液泵连续静注 4 8小时 ,以上治疗方案每 3周重复一次 ) ,所有病人均接受 3个周期以上化疗。结果  PR17例 ,SD18例 ,PD7例 ,总有效率 4 0 .5 %。中位疾病无进展期 5 .5个月 ,中位生存期 9.5个月 ,1年生存率35 .7%。主要不良反应包括恶心、呕吐、黏膜炎、外周神经炎、外周静脉炎及贫血等。毒性多为 ~ 度 ,病人耐受良好。结论 奥沙利铂联合大剂量 CF/ 5 - FU持续静脉输注 4 8小时治疗晚期大肠癌疗效确切 ,不良反应轻微 。 展开更多
关键词 奥沙利铂 大剂量 CF/5—fu 持续滴注 治疗 晚期 大肠癌 临床研究
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昆明地区下寒武统节肢动物Guangweicaris Luo, Fu et Hu, 2007的再研究 被引量:3
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作者 杨杰 侯先光 董渭 《古生物学报》 CAS CSCD 北大核心 2008年第1期115-122,共8页
昆明地区下寒武统沧浪铺组乌龙箐段所产的节肢动物Guangweicaris Luo,Fu et Hu,2007,为研究寒武纪生命大爆发之后节肢动物辐射特征提供了重要资料。罗惠麟等(2007)在报道该节肢动物时,因标本不完整,对其头部和尾部特征均作了错误鉴别和... 昆明地区下寒武统沧浪铺组乌龙箐段所产的节肢动物Guangweicaris Luo,Fu et Hu,2007,为研究寒武纪生命大爆发之后节肢动物辐射特征提供了重要资料。罗惠麟等(2007)在报道该节肢动物时,因标本不完整,对其头部和尾部特征均作了错误鉴别和描述。笔者根据完整且保存有软体附肢的标本,对Guangweicaris Luo,Fu et Hu,2007作了重新研究和复原,据此讨论了该节肢动物的分类归属问题。 展开更多
关键词 Guangweicaris Luo fu ET HU 2007节肢动物 下寒武统沧浪铺组 昆明
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