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cDNA微阵列

cDNA微阵列的相关文献在2000年到2015年内共计155篇,主要集中在肿瘤学、分子生物学、基础医学 等领域,其中期刊论文143篇、会议论文9篇、专利文献81515篇;相关期刊100种,包括生物化学与生物物理进展、生物技术通讯、遗传等; 相关会议8种,包括第29届中国控制会议、内蒙古自治区第四届自然科学学术年会、中国中西医结合学会第五届基础理论研究专业委员会学术研讨会等;cDNA微阵列的相关文献由583位作者贡献,包括曾义、游潮、董海涛等。

cDNA微阵列—发文量

期刊论文>

论文:143 占比:0.18%

会议论文>

论文:9 占比:0.01%

专利文献>

论文:81515 占比:99.81%

总计:81667篇

cDNA微阵列—发文趋势图

cDNA微阵列

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  • 曾义
  • 游潮
  • 董海涛
  • 李德葆
  • 万小平
  • 李桂源
  • 梁清华
  • 蔡斌
  • 刘玲
  • 唐发清
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    • 刘正龙; 王洪平; 杨艳梅; 罗玉军
    • 摘要: cDNA微阵列实验的基因表达差异水平的检测,在癌症诊断中鉴别肿瘤特异性基因分型的方法,可采用比较条件下的两个基因的表达差异,发现与疾病相关的基因的特异性表达。在实验中对相同样品通常有两次或多次的重复,来提高实验数据的可靠性、稳定性,但是不能重复足以满足对实验数据的分析的要求,因为cDNA微阵列费用仍然比较昂贵,对实验数据的表达差异分析就是要识别在不同条件下有显著表达差异的基因,因此需要采用分析这些数据的统计方法,这样有助于揭示生命体的奥秘,而且还可以为基因诊断与基因治疗提供重要的科学依据和为复杂疾病的发病机制研究提供重要的方法。
    • Helieh S Oz; Ying Lu; Louis P Vera-Portocarrero; Pei Ge; Ada Silos-Santiago; Karin N Westlund
    • 摘要: AIM:To analyze gene expression profiles in an experimental pancreatitis and provide functional reversal of hypersensitivity with candidate gene endothelin-1 antagonists.METHODS:Dibutyltin dichloride(DBTC) is a chemical used as a polyvinyl carbonate stabilizer/catalyzer,biocide in agriculture,antifouling agent in paint and fabric.DBTC induces an acute pancreatitis flare through generation of reactive oxygen species.Lewis-inbred rats received a single i.v.injection with either DBTC or vehicle.Spinal cord and dorsal root ganglia(DRG) were taken at the peak of inflammation and processed for transcriptional profiling with a cDNA microarray biased for rat brain-specific genes.In a second study,groups of animals with DBTC-induced pancreatitis were treated with endothelin(ET) receptor antagonists [ET-A(BQ123) and ET-B BQ788)].Spontaneous pain related mechanical and thermal hypersensitivity were measured.Immunohistochemical analysis was performed using anti-ET-A and ET-B antibodies on sections from pancreatic tissues and DRG of the T10-12 spinal segments.RESULTS:Animals developed acute pancreatic inflammation persisting 7-10 d as confirmed by pathological studies(edema in parenchyma,loss of pancreatic architecture and islets,infiltration of inflammatory cells,neutrophil and mononuclear cells,degeneration,vacuolization and necrosis of acinar cells) and the painrelated behaviors(cutaneous secondary mechanical and thermal hypersensitivity).Gene expression profile was different in the spinal cord from animals with pancreatitis compared to the vehicle control group.Over 260 up-regulated and 60 down-regulated unique genes could be classified into 8 functional gene families:circulatory/acute phase/immunomodulatory;extracellular matrix;structural;channel/receptor/transporter;signaling transduction;transcription/translation-related;antioxidants/chaperones/heat shock;pancreatic and other enzymes.ET-1 was among the 52 candidate genes upregulated greater than 2-fold in animals with pancreatic inflammation and visceral pain-related behavior.Treatments with the ET-A(BQ123) and ET-B(BQ-788) antagonists revealed significant protection against inflammatory pain related mechanical and thermal hypersensitivity behaviors in animals with pancreatitis(P < 0.05).Open field spontaneous behavioral activity(at baseline,day 6 and 30 min after drug treatments(BQ123,BQ788) showed overall stable activity levels indicating that the drugs produced no undesirable effects on normal exploratory behaviors,except for a trend toward reduction of the active time and increase in resting time at the highest dose(300 μmol/L).Immunocytochemical localization revealed that expression of ET-A and ET-B receptors increased in DRG from animals with pancreatitis.Endothelin receptor localization was combined in dual staining with neuronal marker NeuN,and glia marker,glial fibrillary acidic protein.ET-A was expressed in the cell bodies and occasional nuclei of DRG neurons in na ve animals.However,phenotypic expression of ET-A receptor was greatly increased in neurons of all sizes in animals with pancreatitis.Similarly,ET-B receptor was localized in neurons and in the satellite glia,as well as in the Schwann cell glial myelin sheaths surrounding the axons passing through the DRG.CONCLUSION:Endothelin-receptor antagonists protect against inflammatory pain responses without interfering with normal exploratory behaviors.Candidate genes can serve as future biomarkers for diagnosis and/or targeted gene therapy.
    • 闫竞一; 陈笑雷; 黄颖鹏; 韩少良; 周坤; 章圣辉
    • 摘要: 目的 观察复发与未复发胃肠间质瘤(GIST)间的基因表达差异,探讨恶性GIST伊马替尼耐药、复发发生发展机制.方法 收集5对患者的新鲜复发及未复发GIST组织随机配对成组行cDNA微阵列研究.应用荧光定量聚合酶链反应(PCR)方法对芯片结果进行验证.结果 复发与未复发GIST间的差异表达基因共1088个,其中表达上调者592个,下调者496个;上调基因功能主要与信号传导、肿瘤发生、药物代谢、细胞黏附等相关;下调基因功能则主要与细胞间隙连接通讯、肿瘤抑制、补体免疫防御等相关;GIST相关基因c-kit(CD117)、CD34在两组间差异均无统计学意义;荧光定量PCR验证结果与芯片表达结果一致.结论 运用cDNA芯片进行基因表达谱分析,有助于探讨GIST复发、伊马替尼耐药机制并寻找新的治疗靶标.%Objective To study the differential expression of recurrence-associated and imatinib resistance-associated gene between recurrent and unrecurrent gastrointestinal stromal tumors (GIST) and explore the molecular mechanism of drug resistance and recurrence of malignant GIST by cDNA microarray analysis.Methods A total of 5 pairs of recurrent and unrecurrent fresh GIST tissues were subjected to cDNA microarray with 41000 genes.Array results were validated by reverse transcription-polymerase chain reaction (RT-PCR).Results There were 1088 differential expression genes between recurrent and unrecurrent GIST tissues,including 592 genes up-regulated and 496 down-regulated.Most of the overexpressed genes were related to signaling pathway,oncogenesis,drug metabolism,cell adhesion,and the down-regulated genes were related to gap junction,tumor suppression,complement imumune defense.GIST related genes (c-kit,CD34) had no significant difference between recurrent and unrecurrent GIST tissues.RT-PCR confirmed the array results.Conclusion Gene expression profiling by cDNA microarray analysis provides not only molecular understanding of recurrence mechanism and imatinib resistance mechanism of GIST,but may also be helpful in discovering new therapeutic targets for recurrent and imatinib resistant GIST.
    • 罗政强; 陈安民; 郭风劲; 李新志
    • 摘要: 目的 应用基因芯片技术观察高低不同转移特性乳腺癌细胞亚株的基因表达差异,以筛选乳腺癌骨转移相关及候选基因.方法 提取乳腺癌细胞亚株A2和C6的总RNA 20 μg,用逆转录Cy5和Cy3荧光标记成cDNA探针,与含有7458个基因的人基因表达谱芯片进行杂交,杂交信号用Generation Ⅲ array scanner扫描,用Imagequant 5.0、Array Vision 6.0软件分析和处理数据.结果 2个细胞亚株发生显著性表达变化的基因有767个,与A2比较,在C6中上调表达的基因有480个,下调表达的基因有287个.其中包括与细胞骨架结构相关的基因、与细胞生长及增殖调控相关的基因、以及与细胞氧化张力应激反应相关的基因.结论 cDNA微阵列法可用于筛选乳腺癌骨转移相关基因,获得的差异表达基因具有较强的代表性.%Objective To establish variant cell sublines expressing green fluorescent protein with high- and low-metastatic potential, and investigate gene expression profile in these cell sublines in order to find new candidate genes related to metastasis of breast cancer to bone. Methods Twenty μg total RNA of MCF7 cell sublines A2 and C6 was extracted, purified to mRNA and then reversely transcripted to cDNA probe which labeled with Cy5 and Cy3 fluorescence respectively. The two samples were hybridized with the cDNA microarray chips containing 7458 human target genes. The hybridization signals were scanned by Generation Ⅲ array scanner and obtained data were analyzed using Imagequant 5. 0 and Array Vision 6. 0 software. Results There were significant differences in gene expression between A2 and C6 cell sublines.Among the target genes, 767 differentially expressed genes were identified. As compared to A2, 480 of 767 differentially expressed genes were up-regulated and the remaining 287 were down-regulated. Conclusion There were different gene expression profiles between high- and low-metastatic potential cell sublines.These genes may provide important clues for finding genes related to metastasis of breast cancer to bone.
    • 缪懿; 蔡斌; 刘玲; 杨懿霞; 万小平
    • 摘要: 目的 初步建立卵巢透明细胞癌基因表达谱,探讨透明细胞癌和浆液性囊腺癌之间的差异表达基因.方法 用一步法抽提8例卵巢透明细胞癌组织和8例卵巢浆液性囊腺癌组织的总RNA,反转录合成cDNA探针的同时以Cy3、Cy5分别标记透明细胞癌和浆液性囊腺癌.两种探针等量混合后与含有14 000多条人类全基因的表达谱芯片杂交.经洗片、扫描和图像处理,分析卵巢透明细胞癌和浆液性囊腺癌之间基因表达谱差异.结果 卵巢透明细胞癌和卵巢浆液性囊腺癌基因表达谱比较,差异2倍以上基因共有82个,表达上调的有25个,表达下调的有57个.其中有功能的表达上调基因9个,表达下调基因12个.结论 建立的卵巢透明细胞癌和浆液性囊腺癌差异表达基因谱,有助于深入研究卵巢透明细胞癌分子生物学特点.%Objective To investigate genes differential expression between the ovarian clear cell carcinoma and the ovarian cystadenocarcinoma by gene expression profiles. Methods The total RNA of 8 clear cell carcinomas and 8 serous cystadenocareinomas were isolated by using TRIzol method, then reversely transcripted them to cDNA with Cy3 and Cy5 labeling respectively. Equal quantity of labeled cDNA were mixed and then hybridized in the cDNA microarray with more than 14 000 unigene. After washing, scanning and image processing, the difference of gene expression profiles between clear cell carcinoma and serous cystadenocarcinoma was analyzed. Results Totally 82 genes had more than two fold different expression, the up-regulated and down-regulated genes were 25 and 57 respectively. Nine genes up-regulated and 12 genes down-regulated have identified function. Conclusion Establishment of the gene expression profile between two type ovarian carcinomas contributes to the exploration of the molecular biologic characteristic of the ovarian clear cell carcinoma.
    • 缪懿; 蔡斌; 刘玲; 杨懿霞; 万小平
    • 摘要: 目的:通过建立基因表达谱,研究透明细胞癌和浆液性囊腺癌之间差异表达基因。方法:利用cDNA芯片建立和分析两者基因表达谱,并对透明细胞癌中上调表达的膜联蛋白Ⅳ,在组织和细胞中进行了定量PCR以及免疫组织化学和Western blot验证。结果:卵巢透明细胞癌和卵巢浆液性囊腺癌基因表达谱比较,差异2倍以上基因共有82个,25个表达上调,57个表达下调。其中有功能的上调基因7个,下调基因12个。组织和细胞中膜联蛋白Ⅳ在mRNA及蛋白水平上的表达与基因芯片结果一致。结论:通过基因芯片可以建立卵巢透明细胞癌和浆液性囊腺癌的差异表达基因谱,膜联蛋白Ⅳ在卵巢透明细胞癌中上调表达可能具有重要意义。
    • Gunter Maubach; Michelle Chin Chia Lim; Henry Yang
    • 摘要: AIM: To understand which and how different miRNAs are implicated in the process of hepatic stellate cell (HSC) activation. METHODS: We used microarrays to examine the differential expression of miRNAs during in vitro activation of primary HSCs (pHSCs). The transcriptome changes upon stable transfection of rno-miR-146a into an HSC cell line were studied using cDNA microarrays. Selected differentially regulated miRNAs were investigated by quantitative real-time polymerase chain reaction during in vivo HSC activation. The effect of miRNA mimics and inhibitor on the in vitro activation of pHSCs was also evaluated.RESULTS: We found that 16 miRNAs were upregulated and 26 were downregulated significantly in 10-d in vitro activated pHSCs in comparison to quiescent pHSCs. Overexpression of rno-miR-146a was characterized by marked upregulation of tissue inhibitor of metalloproteinase-3, which is implicated in the regulation of tumor necrosis factor-α activity. Differences in the regulation of selected miRNAs were observed comparing in vitro and in vivo HSC activation. Treatment with miR-26a and 29a mimics, and miR-214 inhibitor during in vitro activation of pHSCs induced significant downregulation of collagen type Ⅰ transcription. CONCLUSION: Our results emphasize the different regulation of miRNAs in in vitro and in vivo activated pHSCs. We also showed that miR-26a, 29a and 214 are involved in the regulation of collagen type I mRNA.
    • 韦克苏; 程方民; 董海涛; 张其芳; 刘奎刚; 曹珍珍
    • 摘要: [目的]揭示花后高温条件下水稻灌浆过程中胚乳淀粉和蛋白贮藏物代谢相关基因的表达谱,并阐明部分重要功能基因对花后高温胁迫的响应表达模式.[方法]利用人工气候箱设高温(日均温度32°C,日最高温36°C/日最低温28°C)和适温(日均温度22°C,日最高温26°C/日最低温18°C)2个温度处理,并在水稻开花后的不同时期取样,对水稻胚乳贮藏物代谢各类相关基因的表达谱与表达模式进行高通量的cDNA微阵列检测.[结果]在水稻胚乳贮藏物代谢的相关基因中,以对高温胁迫响应表现较迟钝的基因居多,其高温处理与低温处理之间的杂交信号(nARVOL)比值(称R值)大致在0.8-1.2,但随高温处理时间的持续,呈上调或下调差异表达的基因数量均有明显增加;花后高温对胚乳糖代谢和淀粉合成类基因表达的调控效应,不仅随各个基因的功能类型、代谢途径和灌浆进程的差别变化而异,而且其表达丰度及其上调或下调幅度在很大程度上还与该功能基因的同工型(或酶亚基)有关;高温处理下水稻胚乳中的谷蛋白、醇溶蛋白和球蛋白类基因多呈下调表达特征,但也会随其所调控的蛋白亚基组分的不同而异,从而对胚乳贮藏蛋白的亚基构成和组分变化产生较大影响;与胚乳白贮藏物代谢密切相关的糖信号传导类基因、核糖体蛋白类基因和逆境防御蛋白类基因普遍比直接参与胚乳贮藏物合成路径的功能基因对高温胁迫响应表现敏感.[结论]花后高温胁迫对水稻胚乳灌浆贮藏物代谢的调控相当复杂,涉及到众多的功能基因位点.
    • 高素君; 朱迅; 姚程; 李薇; 王冠军
    • 摘要: 本研究旨在探讨慢性髓系白血病(chronic myeloid leukemia,CML)急变的分子机制.采用cDNA微重排方法对4例CML急变期、4例CML慢性期患者进行基因差异表达分析.结果显示,共筛选出至少在3张芯片有差异表达的基因74条,其中下调52条,上调22条;差异表达基因包括:细胞骨架/运动相关基因、信号传导相关基因、转录因子相关基因、免疫相关基因、代谢相关基因、细胞周期相关基因、原癌和抑癌基因、细胞受体相关基因、蛋白质翻译合成相关基因及功能未知的基因等.结论:急变是多基因异常相互作用的结果,其中功能异常的信号转导、细胞周期调控、细胞分化及免疫的相关基因可能是导致CML急变的关键基因.
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