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Isolation and Expression Analysis of MaPRMT1 Gene in Banana
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作者 刘凡 张建斌 +3 位作者 贾彩红 杨景豪 徐碧玉 金志强 《Agricultural Science & Technology》 CAS 2008年第3期70-74,102,共6页
[Objective] The aim of experiment was to lay molecular foundation for studying maturity mechanism of banana after harvest. [Method] The combined method of suppressing subtractive hybridization and cDNA micro-array wer... [Objective] The aim of experiment was to lay molecular foundation for studying maturity mechanism of banana after harvest. [Method] The combined method of suppressing subtractive hybridization and cDNA micro-array were used to obtain cDNA segment of one PRMT gene in banana and the whole cDNA sequence of the gene was cloned.The bioinformatics analysis was operated on it,in addition, the expression profile analysis was conducted in different organs and different mature periods of banana.[Result] The whole length of cDNA in MaPRMT1 was 1 158 bp and possessed a complete open reading frame,which could encode 385 amino acids.It had high homology with PRMT in plant,containing one Methyltransf_1 domain.The MaPRMT1 gene was expressed in root,stem,leaf and fruit of banana and the expression levels in stem and leaf were relatively high.As the increase of days after harvest,the expression level declined gradually,however it reached maximum when ethylene release was biggest,then it declined.[Conclusion] MaPRMT1 belonged to the first kind of arginine methyltransferase and it was expressed differently in different organs and fruits at different mature periods. 展开更多
关键词 BANANA Protein ARGININE METHYLTRANSFERASE (PRMT) MUSA acu minata PRMT1(MaPRMT1) gene differential expression Reverse transcriptase-polynerase chain reaction(RT-PCR)
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TfR1 Extensively Regulates the Expression of Genes Associated with Ion Transport and Immunity 被引量:4
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作者 Nan HUANG Lei-Lei ZHAN +4 位作者 Yi CHENG Xiao-long WANG Ya-xun WEI Qi WANG Wen-jing LI 《Current Medical Science》 SCIE CAS 2020年第3期493-501,共9页
Transferrin receptor 1(TfR1),encoded by the TFRC gene,is the gatekeeper of cellular iron uptake for cells.A variety of molecular mechanisms are at work to tightly regulate TfR1 expression,and abnormal TfR1 expression ... Transferrin receptor 1(TfR1),encoded by the TFRC gene,is the gatekeeper of cellular iron uptake for cells.A variety of molecular mechanisms are at work to tightly regulate TfR1 expression,and abnormal TfR1 expression has been associated with various diseases.In the current study,to determine the regulation pattern of TfR1,we cloned and overexpressed the human TFRC gene in HeLa cells.RNA-sequencing(RNA-seq)was used to analyze the global transcript levels in overexpressed(OE)and normal control(NC)samples.A total of 1669 differentially expressed genes(DEGs)were identified between OE and NC.Gene ontology(GO)analysis was carried out to explore the functions of the DEGs.It was found that multiple DEGs were associated with ion transport and immunity.Moreover,the regulatory network was constructed on basis of DEGs associated with ion transport and immunity,highlighting that TFRC was the node gene of the network.These results together suggested that precisely controlled TfR1 expression might be not only essential for iron homeostasis,but also globally important for cell physiology,including ion transport and immunity. 展开更多
关键词 transferrin receptor 1 OVERexpressION RNA-SEQ differentially expressed genes ion transport cellular immunity
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奥奈达希瓦氏菌(Shewanella oneidensis)MR-1对氟西汀降解过程的转录组及功能基因分析
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作者 万宇 杭小帅 +7 位作者 王志刚 张澜 周莉 尤晓慧 朱冬冬 王燕 肖静 陈翔 《生态与农村环境学报》 CAS CSCD 北大核心 2024年第4期532-540,共9页
该文研究了厌氧条件下奥奈达希瓦氏菌(Shewanella oneidensis)MR-1对氟西汀的降解性能,并从转录组学分析遗传分子代谢机制。结果表明,Shewanella oneidensis MR-1在厌氧条件下可有效降解体系中93.12%的氟西汀,降解速率达0.94 mg·L^... 该文研究了厌氧条件下奥奈达希瓦氏菌(Shewanella oneidensis)MR-1对氟西汀的降解性能,并从转录组学分析遗传分子代谢机制。结果表明,Shewanella oneidensis MR-1在厌氧条件下可有效降解体系中93.12%的氟西汀,降解速率达0.94 mg·L^(-1)·h^(-1)。采用Illumina高通量测序平台对降解氟西汀后的细菌与对照组细菌进行测序,通过基因本体数据库(GO)和京都基因与基因组百科全书数据库(KEGG)富集分析,结合筛选的高表达高上调的差异表达基因,得到了耐受和降解氟西汀的功能基因,其中包膜应激反应膜蛋白基因、ABC转运蛋白基因、噬菌体休克蛋白PspA基因、氧化应激防御蛋白基因等在Shewanella oneidensis MR-1对环境的耐受中起重要作用;细胞色素C基因、硝基还原酶NfsB基因、乳酸利用蛋白基因等在氟西汀的降解转化中起关键作用。该研究从转录组水平分析了氟西汀的降解机制,可为Shewanella oneidensis MR-1在环境修复中的应用提供参考依据。 展开更多
关键词 Shewanella oneidensis MR-1 氟西汀 转录组 差异表达基因 功能基因
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接种根瘤菌对‘蒙农三叶草1号’根部转录水平的影响
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作者 曹克璠 索荣臻 +4 位作者 张慧敏 马一鸣 吴倩 包立高 王明玖 《草地学报》 CAS CSCD 北大核心 2024年第9期2759-2768,共10页
为探究‘蒙农三叶草1号’(Trifolium ambiguum Bieb.‘Mengnong No.1’)与根瘤菌共生过程中相关基因的分子机制及代谢通路,本研究选取了接种根瘤菌的‘蒙农三叶草1号’以及未接种的对照组为研究对象,通过转录组测序,比较了共生与非共生... 为探究‘蒙农三叶草1号’(Trifolium ambiguum Bieb.‘Mengnong No.1’)与根瘤菌共生过程中相关基因的分子机制及代谢通路,本研究选取了接种根瘤菌的‘蒙农三叶草1号’以及未接种的对照组为研究对象,通过转录组测序,比较了共生与非共生状态下的转录组差异。结果表明,与未接种组相比,接种组共筛选出1105个差异表达基因(Differentially expressed genes,DEGs)。进一步分析发现,这些DEGs涉及多个代谢通路和生物学过程,包括苯丙烷生物合成、氨基糖和核苷酸糖代谢、半胱氨酸和甲硫氨酸代谢等。其中,677个基因上调,428个基因下调。通过实时荧光定量PCR(qRT-PCR)对部分基因进行验证,证实了转录组测序的可靠性。本研究揭示了‘蒙农三叶草1号’在根瘤菌共生状态下的转录组特征,为深入理解植物与根瘤菌共生机制提供了重要参考。 展开更多
关键词 ‘蒙农三叶草1号’ 接种根瘤菌 差异表达基因 转录组学
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Study on PRRSV Receptor Genes Differential Expression in Lung Tissues in Different Breeds of Pigs after Infecting with HP-PRRSV
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作者 Kang Runmin Ji Gaosheng +2 位作者 Zeng Kai Lv Xuebin Yin Mingyu 《Animal Husbandry and Feed Science》 CAS 2017年第4期229-233,258,共6页
[ Objective] In order to study the susceptibility molecular mechanism of highly pathogenic porcine reproductive and respiratory syndrome virus ( HP- PRRSV) JXA1 isolate on Tibetan pig, Zangmei pig and Yorkshire pig.... [ Objective] In order to study the susceptibility molecular mechanism of highly pathogenic porcine reproductive and respiratory syndrome virus ( HP- PRRSV) JXA1 isolate on Tibetan pig, Zangmei pig and Yorkshire pig. [ Method ] In the study, real-time quantitative RT-PCR method was established to compare and analyze the differential expression of five porcine reproductive and respiratory syndrome virus (PRRSV) receptor genes (HSPG2, SIGLEC1, CD163, VIM and NMMHC-H A) in lung tissues in Tibetan pig, Zangmei pig and Yorkshire pig before the challenge and at the 4th ,7th and 14th days after the challenge with JXAI isolate. [ Results ] HSPG2 expression in Tibetan pig lung tissues increased significantly at the 4th and 14th days after the challenge with JXAI ( P 〈 0.05 ), while decreased significantly at the 7th day after the challenge (P 〈 0.05 ), HSPG2 expression in Zangmei pig lung tissues increased significantly at the 14th day after the challenge (P〈0.05). SIGLECl expression in Tibetan pig lung tissues increased significantly at the 4th and 14th days after the infection(P 〈 0.05 ), while SIGLEC 1 expression in Yorkshire pig decreased significantly at the 4th, 7th and 14th days after the challenge (P 〈0. 05 ). CD163 expression in lung tissues of Tibetan pig and Zangmei pig both increased significantly at the 14th day after the challenge (P 〈 0.05 ), while CD163 expression in lung tissues of Yorkshire pig decreased significantly at the 7th and 14th days after the challenge ( P 〈 0. 05 ). VIM expression in lung tissues of Tibetan pig increased significantly at the 7th day after the challenge ( P 〈 0. 05 ), while which of Yorkshire pig at the 7th day after the challenge decreased significantly ( P 〈 0. 05 ). NMMHC-II A expression in lung tissues of Zangmei pig increased significantly at the 4th day after the challenge ( P 〈 0. 05 ), and which of Yorkshire pig increased significantly at the 4th and 14th days after the challenge (P 〈 0. 05 ). [ Conclusion] SIGLEC1 and VIM genes might be the potential key genes affecting the susceptibility of JXA1 isolate on Tibetan pig, Zangrnei pig and Yorkshire pig. Key words JXA1 isolate; Tibetan pig; Zangmei pig; Yorkshire pig; Porcine reproductive and respiratory syndrome virus receptor genes; Differential expression 展开更多
关键词 JXA1 isolate Tibetan pig Zangmei pig Yorkshire pig Porcine reproductive and respiratory syndrome virus receptor genes differential expression
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SPP1、DEC1、C1QTNF6蛋白与口腔鳞状细胞癌患者临床病理指标及预后的关系
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作者 付勇青 徐三会 +1 位作者 赵岩 王丽丽 《癌变.畸变.突变》 CAS 2024年第2期107-111,117,共6页
目的:探讨口腔鳞状细胞癌患者血清重组人分泌型磷蛋白1(SPP1)、软骨分化的表达基因1(DEC1)和补体C1q/肿瘤坏死因子相关蛋白6(C1QTNF6)的表达水平与其临床病理指标及预后的关系。方法:免疫组织化学染色法和电化学发光免疫分析法检测88例... 目的:探讨口腔鳞状细胞癌患者血清重组人分泌型磷蛋白1(SPP1)、软骨分化的表达基因1(DEC1)和补体C1q/肿瘤坏死因子相关蛋白6(C1QTNF6)的表达水平与其临床病理指标及预后的关系。方法:免疫组织化学染色法和电化学发光免疫分析法检测88例口腔鳞状细胞癌患者癌组织和血清中SPP1、DEC1和C1QTNF6蛋白的表达水平;Pearson相关性分析和Kaplan-Meier生存分析法分析患者血清SPP1、DEC1和C1QTNF6蛋白表达水平与其临床病理指标的相关性和对患者预后的影响。多因素Cox回归法分析影响口腔鳞状细胞癌患者预后的危险因素。结果:免疫组织化学染色结果显示口腔鳞状细胞癌患者癌组织中SPP1、DEC1和C1QTNF6蛋白的阳性表达率较癌旁组织分别增加了1.94、2.98和2.35倍(P<0.05或P<0.01);电化学发光免疫分析法结果显示口腔鳞状细胞癌患者血清SPP1、DEC1和C1QTNF6蛋白表达水平较正常人分别上调了8.61、6.20和4.03倍(P<0.05或P<0.01);Pearson相关性分析结果显示患者血清SPP1、DEC1和C1QTNF6蛋白表达水平与患者发生多灶嗜神经侵犯、肿瘤浸润程度、淋巴结转移、较高的TNM分期呈正相关(P<0.05);Kaplan-Meier生存分析结果显示,血清SPP1、DEC1和C1QTNF6蛋白高表达水平的口腔鳞状细胞癌患者总生存率低;多因素Cox回归分析结果表明多灶嗜神经侵犯、肿瘤高浸润度、淋巴结转移和高的TNM分期是影响预后的危险因素(P<0.05)。结论:口腔鳞状细胞癌患者癌组织和血清中SPP1、DEC1和C1QTNF6蛋白表达水平升高,且与患者发生多灶嗜神经侵犯、肿瘤浸润和淋巴结转移、较高的TNM分期呈正相关,而与患者预后呈负相关。 展开更多
关键词 口腔鳞状细胞癌 重组人分泌型磷蛋白1 软骨分化的表达基因1 补体C1q/肿瘤坏死因子相关蛋白6 预后
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Characterization of Ppd-D1 alleles on the developmental traits and rhythmic expression of photoperiod genes in common wheat
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作者 ZHAO Yong-ying WANG Xiang +2 位作者 WEI Li WANG Jing-xuan YIN Jun 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2016年第3期502-511,共10页
Photoperiodic response is an important characteristic that plays an important role in plant adaptability for various environments. Wheat cultivars grow widely and have high yield potential for the strong photoperiod a... Photoperiodic response is an important characteristic that plays an important role in plant adaptability for various environments. Wheat cultivars grow widely and have high yield potential for the strong photoperiod adaptibility. To assess the photoperiodic response of different genotypes in wheat cultivars, the photoperiodic effects of the Ppd-D1 alleles and the expressions of the related TaGI, TaCO and Ta FT genes in Liaochun 10 and Ningchun 36 were investigated under the short-day(6 h light, SD), moderate-day(12 h light, MD) and long-day(24 h light, LD) conditions. Amplicon length comparison indicated that the promoter of Ppd-D1 in Ningchun 36 is intact, while Liaochun 10 presented the partial sequence deletion of Ppd-D1 promoter. The durations of all developmental stages of the two cultivars were reduced by subjection to an extended photoperiod, except for the stamen and pistil differentiation stage in the Liaochun 10 cultivar. The expression levels of the Ppd-D1 alleles and the TaGI, TaCO and TaFT genes associated with the photoperiod pathway were examined over a 24-h period under SD and MD conditions. The relationships of different photoperiodic responses of the two cultivars and the expression of photoperiod pathway genes were analyzed accordingly. The photoperiod insensitive(PI) genotype plants flower early under SD; meanwhile, the abnormal expression of the Ppd-D1 a allele is accompanied with an increase in Ta FT1 expression and the TaCO expression variation. The results would facilitate molecular breeding in wheat. 展开更多
关键词 wheat photoperiod spike differentiation heading gene expression Ppd-D1
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Differential analysis revealing APOC1 to be a diagnostic and prognostic marker for liver metastases of colorectal cancer 被引量:1
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作者 Hai-Yu Shen Fang-Ze Wei Qian Liu 《World Journal of Clinical Cases》 SCIE 2021年第16期3880-3894,共15页
BACKGROUND Colorectal cancer(CRC)is one of the most malignant gastrointestinal cancers worldwide.The liver is the most important metastatic target organ,and liver metastasis is the leading cause of death in patients w... BACKGROUND Colorectal cancer(CRC)is one of the most malignant gastrointestinal cancers worldwide.The liver is the most important metastatic target organ,and liver metastasis is the leading cause of death in patients with CRC.Owing to the lack of sensitive biomarkers and unclear molecular mechanism,the occurrence of liver metastases cannot be predicted and the clinical outcomes are bad for liver metastases.Therefore,it is very important to identify the diagnostic or prognostic markers for liver metastases of CRC.AIM To investigate the highly differentially expressed genes(HDEGs)and prognostic marker for liver metastases of CRC.METHODS Data from three NCBI Gene Expression Omnibus(GEO)datasets were used to show HDEGs between liver metastases of CRC and tumour or normal samples.These significantly HDEGs of the three GEO datasets take the interactions.And these genes were screened through an online tool to explore the prognostic value.Then,TIMER and R package were utilized to investigate the immunity functions of the HDEGs and gene set enrichment analysis was used to explore their potential functions.RESULTS Based on the selection criteria,three CRC datasets for exploration(GSE14297,GSE41258,and GSE49355)were chosen.Venn diagrams were used to show HDEGs common to the six groups and 47 HDEGs were obtained.The HDEGs were shown by using STRING and Cytoscape software.Based on the TCGA database,APOC1 showed significantly different expression between N2 and N0,and N2 and N1.And there was also a significant difference in expression between T2 and T4,and between T2 and T3.In 20 paired CRC and normal tissues,quantitative real-time polymerase chain reaction illustrated that the APOC1 mRNA was strongly upregulated in CRC tissues(P=0.014).PrognoScan and GEPIA2 revealed the prognostic value of APOC1 for overall survival and diseasefree survival in CRC(P<0.05).TIMER showed that APOC1 has a close relationship with immune infiltration(P<0.05).CONCLUSION APOC1 is a biomarker that is associated with both the diagnosis and prognosis of liver metastases of CRC. 展开更多
关键词 APOC1 Liver metastases Colorectal cancer differentially expressed genes MARKER
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电压门控钾通道亚家族G成员1在肺癌中的表达及生物学作用 被引量:1
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作者 程峰 彭诗晴 +1 位作者 曹杨 陆益民 《江苏大学学报(医学版)》 CAS 2023年第6期475-485,共11页
目的:探讨电压门控钾通道亚家族G成员1(potassium voltage-gated channel subfamily G member 1,KCNG1)在人肺癌组织中的表达水平和临床意义以及其在肺癌细胞恶性生物学行为中的作用。方法:通过TCGA数据库(The Cancer Genome Atlas)分析... 目的:探讨电压门控钾通道亚家族G成员1(potassium voltage-gated channel subfamily G member 1,KCNG1)在人肺癌组织中的表达水平和临床意义以及其在肺癌细胞恶性生物学行为中的作用。方法:通过TCGA数据库(The Cancer Genome Atlas)分析KCNG1 mRNA在人肺癌组织中的表达水平,探究其与肺癌患者临床病理特征及预后的关系;基于KCNG1 mRNA表达水平构建预测肺癌患者预后的列线图模型;采用基因本体(GO)功能富集分析和京都基因与基因组百科全书通路(KEGG)富集分析探究KCNG1潜在的生物学功能;采用基因集富集分析(GSEA)预测KCNG1相关差异表达基因参与调控的相关信号通路。采用实时荧光定量PCR(qRT-PCR)及蛋白免疫印迹分别检测肺癌A549和H1299细胞系以及正常肺上皮细胞中KCNG1 mRNA和蛋白表达水平;通过转染siRNA构建KCNG1敲减的细胞株,分别采用EdU,Transwell,Matrigel Transwell,细胞划痕愈合及血管生成拟态实验检测细胞株生物学行为变化。结果:KCNG1 mRNA在肺癌组织中显著高表达且与肺癌患者不良预后密切相关(P均<0.05);列线图模型初步证实KCNG1可能是肺癌潜在的生物标志物,并具有良好的预后评价功能;GO及KEGG富集分析提示KCNG1在调节激素分泌、离子转运、神经肽信号通路及细胞间黏附等生物学过程中发挥重要作用;GSEA结果提示KCNG1相关差异表达基因主要富集在KRAS,MTORC1,MYC,P53及WNT信号通路;KCNG1敲低的肺癌细胞增殖、迁移、侵袭和成管能力明显受到抑制(P均<0.05)。结论:KCNG1 mRNA在肺癌中显著高表达且与患者不良预后密切相关;siRNA介导的KCNG1敲低可显著抑制肺癌细胞的恶性生长。 展开更多
关键词 肺癌 电压门控钾通道亚家族G成员1 分子靶标 差异表达基因 生物标志物
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Dissecting the genetic basis of maize deep-sowing tolerance by combining association mapping and gene expression analysis
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作者 YANG Yue MA Yu-ting +12 位作者 LIU Yang-yang Demar LYLE LI Dong-dong WANG Ping-xi XU Jia-liang ZHEN Si-han LU Jia-wen PENG Yun-ling CUI Yu FU Jun-jie DU Wan-li ZHANG Hong-wei WANG Jian-hua 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2022年第5期1266-1277,共12页
Deep-sowing is an important method for avoiding drought stress in crop species,including maize.Identifying candidate genes is the groundwork for investigating the molecular mechanism underlying maize deep-sowing toler... Deep-sowing is an important method for avoiding drought stress in crop species,including maize.Identifying candidate genes is the groundwork for investigating the molecular mechanism underlying maize deep-sowing tolerance.This study evaluated four traits(mesocotyl length at 10 and 20 cm planting depths and seedling emergence rate on days 6 and 12)related to deep-sowing tolerance using a large maize population containing 386 inbred lines genotyped with 0.5 million high-quality single nucleotide polymorphisms(SNPs).The genomewide association study detected that 273 SNPs were in linkage disequilibrium(LD)with the genetic basis of maize deep-sowing tolerance.The RNA-sequencing analysis identified 1944 and 2098 differentially expressed genes(DEGs)in two comparisons,which shared 281 DEGs.By comparing the genomic locations of the 273 SNPs with those of the 281 DEGs,we identified seven candidate genes,of which GRMZM2G119769 encoded a sucrose non-fermenting 1 kinase interactor-like protein.GRMZM2G119769 was selected as the candidate gene because its homologs in other plants were related to organ length,auxin,or light response.Candidate gene association mapping revealed that natural variations in GRMZM2G119769 were related to phenotypic variations in maize mesocotyl length.Gene expression of GRMZM2G119769 was higher in deep-sowing tolerant inbred lines.These results suggest that GRMZM2G119769 is the most likely candidate gene.This study provides information on the deep-sowing tolerance of maize germplasms and identifies candidate genes,which would be useful for further research on maize deep-sowing tolerance. 展开更多
关键词 MAIZE mesocotyl length association mapping differentially expressed gene SNF1 kinase interactor-like protein
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Study on the Function of ORF Genes of Porcine Circovirus-like Virus P1
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作者 Libin WEN Xuejiao ZHU +2 位作者 Qi XIAO Wei WANG Kongwang HE 《Agricultural Biotechnology》 CAS 2021年第2期84-88,92,共6页
[Objectives]This study was conducted to determine the functions of eight ORF genes of porcine circovirus-like virus P1.[Methods]The double-copy tandem molecular cloning of porcine circovirus-like virus P1 genome was u... [Objectives]This study was conducted to determine the functions of eight ORF genes of porcine circovirus-like virus P1.[Methods]The double-copy tandem molecular cloning of porcine circovirus-like virus P1 genome was used to construct molecular clones with eight ORFs deleted by DNA site-directed mutagenesis technology.After transfected into PK15 cells for a certain period of time,RNA were extracted and was used to verify whether the eight ORFs were deleted or not and used for gene microarry analysis.The GO functions and KEGG pathway enrichment of differentially expressed genes were analyzed.[Results]P1 ORF1 is mainly involved in the biological processes of defense response to virus,signal transduction,regulation of Rab GTPase activity,and lipid metabolic process,and involved in the molecular functions of protein phosphatase inhibitor activity,phosphatidylinositol phospholipase C activity,2 iron,2 sulfur cluster binding,phosphoric diester hydrolase activity,and Rab GTPase activator activity,and in the KEGG pathways of secretion of digestive gland and nervous system development.P1 ORF2 is mainly involved in the biological processes of positive regulation of leukocyte chemotaxis,positive regulation of cell proliferation,positive regulation of cell migration,defense response to virus,regulation of cell growth,and involved in the molecular functions of insulin-like growth factor binding,and chemokine activity,and in the KEGG pathways of cytosolic DNA-sensing pathway,RIG-I-like receptor signaling pathway,toll-like receptor signaling pathway,chemokine signaling pathway,and cytokines,cytokine-cytokine receptor interaction.The biological processes,molecular functions and related pathways involving P1 ORF3 and ORF5 are basically similar to those of ORF2.P1 ORF8 is mainly involved in the biological processes of purine ribonucleotide biosynthetic process,amino acid transport,defense response to virus,amino acid transmembrane transport,and involved in molecular functions of N6-(1,2-dicarboxyethyl)AMP AMP-lyase(fumarate-forming)activity,iron-sulfur cluster binding,amino acid transmembrane transporter activity.[Conclusions]The analysis of the ORF functions of P1 virus lays a foundation for the study of its pathogenicity and pathogenesis. 展开更多
关键词 Porcine circovirus-like virus P1 Function of ORF genes MICROARRAY differentially expressed genes
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miR-124-3p调控的LAD1作为肺腺癌潜在治疗靶点的生物信息学分析
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作者 孙百尔 钱佳燕 《南通大学学报(医学版)》 2023年第5期406-411,共6页
目的:应用生物信息学探索非小细胞肺癌(non-small cell lung cancer,NSCLC)发病机制,筛选目标基因。方法:使用R语言limma包对基因表达综合数据库(gene expression omnibus,GEO)中NSCLC数据集进行差异表达基因鉴定,并对差异表达基因进行... 目的:应用生物信息学探索非小细胞肺癌(non-small cell lung cancer,NSCLC)发病机制,筛选目标基因。方法:使用R语言limma包对基因表达综合数据库(gene expression omnibus,GEO)中NSCLC数据集进行差异表达基因鉴定,并对差异表达基因进行基因本体论(gene ontology,GO)分析和京都基因和基因组百科全书(Kyoto encyclopedia of genes and genomes,KEGG)通路富集分析,然后通过STRING数据库和Cytoscape进行关键基因筛选,在Kaplan-Meier Plotter数据库对核心基因进行生存曲线分析,并对感兴趣的核心基因进行表达差异的验证,使用TargetScan数据库预测调控靶基因的微小RNA(microRNA,miRNA)。结果:共筛选出289个差异表达基因,蛋白质-蛋白质相互作用网络筛选出10个核心基因,其中ladinin-1(LAD1)在蛋白印迹分析中表达差异明显,Kaplan-Meier Plotter数据库显示LAD1在肺腺癌组织中高表达与不良预后有关。TargetScan数据库预测调控靶基因的miR-124-3p与LAD1的mRNA的3′UTR结合。miR-124-3p在NSCLC组织中表达明显下调,且与女性肺腺癌患者的预后具有一定相关性。结论:miR-124-3p调控的LAD1可能是女性肺腺癌潜在的治疗靶点。 展开更多
关键词 非小细胞肺癌 差异表达基因 ladinin-1 微小RNA-124-3p 生物信息学分析
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高血压相关基因hrg-1在血管平滑肌细胞再分化过程中的表达及功能 被引量:17
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作者 姜广建 温进坤 +1 位作者 韩梅 周爱儒 《中国生物化学与分子生物学报》 CAS CSCD 北大核心 2004年第2期195-199,共5页
研究高血压相关基因hrg 1表达与血管平滑肌细胞 (VSMC)再分化的关系及其在细胞生物学行为调节方面的作用 .采用血清饥饿培养和全反式维甲酸诱导使处于增殖状态的去分化型VSMC再分化 ,观察细胞再分化过程中HRG 1表达变化 ,并探讨其功能 ... 研究高血压相关基因hrg 1表达与血管平滑肌细胞 (VSMC)再分化的关系及其在细胞生物学行为调节方面的作用 .采用血清饥饿培养和全反式维甲酸诱导使处于增殖状态的去分化型VSMC再分化 ,观察细胞再分化过程中HRG 1表达变化 ,并探讨其功能 .在血清饥饿和维甲酸诱导VSMC再分化过程中 ,hrg 1基因表达显著上调 ,其表达活性在诱导 2 4h达高峰之后 ,一直维持在较高水平上 ,且其表达量和变化规律与细胞收缩蛋白SMα肌动蛋白和SM2 2α相类似 .免疫共沉淀和免疫双荧光染色结果证实 ,HRG 1抗体可与SMα肌动蛋白共沉淀 ,且两者在同一细胞共定位 .用HRG 1表达质粒转染去分化型VSMC可显著抑制其迁移能力 .结果提示 ,HRG 1在胞质中以与SMα肌动蛋白相互缔合的方式存在 ,其表达与VSMC分化有关 。 展开更多
关键词 血管平滑肌细胞 高血压 基因 hrg-1 分化 迁移
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E2F-1过表达对胃癌细胞凋亡及相关基因表达的影响 被引量:6
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作者 严林海 李雷 +2 位作者 谢玉波 肖强 王长青 《癌症》 SCIE CAS CSCD 北大核心 2009年第11期1176-1180,共5页
背景与目的:E2F-1(E2F transcription factor1)基因是细胞周期的重要转录因子,也参与了细胞凋亡的过程,但机制尚不明确。本研究通过观察E2F-1过表达对胃癌细胞MGC-803凋亡的影响及对下游基因的调控,初步探讨其参与凋亡的分子机理。方法... 背景与目的:E2F-1(E2F transcription factor1)基因是细胞周期的重要转录因子,也参与了细胞凋亡的过程,但机制尚不明确。本研究通过观察E2F-1过表达对胃癌细胞MGC-803凋亡的影响及对下游基因的调控,初步探讨其参与凋亡的分子机理。方法:用流式细胞仪检测稳定转染E2F-1的胃癌MGC-803/E2F-1细胞(实验组)、转染空载体的MGC-803/EV(阴性对照组)及未转染的MGC-803细胞的凋亡情况。再分别抽取MGC-803/E2F-1和MGC-803细胞的总RNA,采用逆转录的方法,制成cDNA,并以两种荧光Cy5和Cy3标记后作为探针(荧光交换芯片),与含有21522条人类基因表达谱芯片进行杂交。采用LuxScan10K/A双通道激光扫描仪扫描芯片上两种荧光信号,应用LuxScan3.0图像分析软件对芯片图像进行处理和分析与凋亡相关的基因的表达,再用RT-PCR针对性的对筛选得到的基因进行验证。结果:MGC-803/E2F-1组细胞的凋亡率明显高于MGC-803/EV组和MGC-803组,3组凋亡率分别为(8.40±0.91)%、(4.53±0.61)%、(4.97±0.47)%;基因芯片扫描筛选出与凋亡相关的差异表达基因15条,其中上调基因4条,下调基因11条;RT-PCR验证多条相关基因其上、下调趋势同基因芯片结果一致。结论:E2F-1基因过表达促进了胃癌MGC-803细胞的凋亡,其影响机制可能与这15条差异表达基因有关系。 展开更多
关键词 胃肿瘤 E2F-1 基因表达谱芯片 差异表达基因 凋亡
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非小细胞肺癌组织中DEC1 mRNA、DEC2 mRNA表达及意义 被引量:7
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作者 马育华 彭海英 +2 位作者 王志蕙 高伟 汪运山 《山东医药》 CAS 北大核心 2016年第12期20-23,共4页
目的探讨非小细胞肺癌组织中分化型胚胎软骨发育基因1(DEC1)mRNA和DEC2 mRNA表达变化及意义。方法收集42例非小细胞肺癌患者的癌组织标本,28例癌旁正常组织标本;采用实时RT-PCR法检测两种组织标本中DEC1 mRNA、DEC2 mRNA的相对表达量;分... 目的探讨非小细胞肺癌组织中分化型胚胎软骨发育基因1(DEC1)mRNA和DEC2 mRNA表达变化及意义。方法收集42例非小细胞肺癌患者的癌组织标本,28例癌旁正常组织标本;采用实时RT-PCR法检测两种组织标本中DEC1 mRNA、DEC2 mRNA的相对表达量;分析DEC1 mRNA、DEC2 mRNA表达与非小细胞肺癌患者临床病理参数的关系。结果 DEC1在非小细胞肺癌组织中相对表达量为0.045 6,正常组织为0.001 7;DEC2 mRNA在非小细胞肺癌组织中的相对表达量为0.056 6,正常组织为0.000 9;两组比较P均<0.05。DEC1 mRNA、DEC2mRNA表达与非小细胞肺癌患者性别、年龄、肿瘤直径、分化程度和TNM分期均无关(P均>0.05);DEC1 mRNA、DEC2 mRNA在腺癌中的相对表达量均高于鳞癌(P均<0.05)。非小细胞肺癌组织中DEC1 mRNA、DEC2 mRNA表达呈正相关(r=0.691,P<0.05)。结论非小细胞肺癌组织中DEC1、DEC2过表达,二者的表达变化可能参与非小细胞肺癌的发生和发展。 展开更多
关键词 非小细胞肺癌 分化型胚胎软骨发育基因1 分化型胚胎软骨发育基因2 相对定量实时RT-PCR
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DLK1在急性白血病中的表达及其在K562细胞红系分化中的作用 被引量:2
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作者 唐雪元 龙潺 +1 位作者 王成红 肖广芬 《中南大学学报(医学版)》 CAS CSCD 北大核心 2009年第9期886-891,共6页
目的:探讨急性白血病(acute leukemia,AL)患者骨髓单个核细胞DLK1基因的表达水平及其在K562细胞红系分化中的作用。方法:采用RT-PCR对65例AL患者及34例正常骨髓对照进行DLK1mRNA水平的检测,对其中20例AL患者及13例正常骨髓用Western印... 目的:探讨急性白血病(acute leukemia,AL)患者骨髓单个核细胞DLK1基因的表达水平及其在K562细胞红系分化中的作用。方法:采用RT-PCR对65例AL患者及34例正常骨髓对照进行DLK1mRNA水平的检测,对其中20例AL患者及13例正常骨髓用Western印迹法检测DLK1蛋白表达水平。培养K562细胞,用氯化高铁血红素(hemin)诱导其分化,观察DLK1在红系分化中的变化。结果:在AL患者和正常骨髓对照的骨髓单个核细胞中DLK1基因均存在明确表达。DLK1mRNA的表达水平AL组高于对照组,差异有统计学意义(P=0.018),但在ALL和ANLL之间DLK1mRNA的表达差异无统计学意义(P>0.05),且DLK1mRNA的表达水平与患者初诊时骨髓原始细胞数、外周血白细胞数及血小板数无关。对部分样品检测DLK1蛋白的表达,发现AL患者DLK1蛋白阳性表达率高于对照组,与mRNA表达趋势一致。在hemin诱导K562细胞向红系分化过程中,DLK1mRNA的表达水平逐渐下降。结论:DLK1基因可能参与了AL的发病过程,但DLK1mRNA的表达水平与AL患者某些临床特征无相关性。DLK1基因可能抑制K562细胞向红系分化。 展开更多
关键词 急性白血病 DLK1 基因表达 红系分化
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E2F-1过表达对胃癌细胞生物学行为的影响 被引量:1
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作者 王晓通 李雷 +2 位作者 肖强 谢玉波 王长青 《广东医学》 CAS CSCD 北大核心 2009年第11期1600-1603,共4页
目的探讨E2F-1对胃癌细胞生物学行为影响的分子机制。方法分别抽取转染E2F-1的胃癌MGC-803细胞和未转染E2F-1的胃癌MGC-803细胞的总RNA。纯化mRNA,逆转录合成cDNA标记后,与22K人类基因表达谱芯片进行杂交,扫描后筛选出表达差异的基因。... 目的探讨E2F-1对胃癌细胞生物学行为影响的分子机制。方法分别抽取转染E2F-1的胃癌MGC-803细胞和未转染E2F-1的胃癌MGC-803细胞的总RNA。纯化mRNA,逆转录合成cDNA标记后,与22K人类基因表达谱芯片进行杂交,扫描后筛选出表达差异的基因。随机选取3个差异表达基因,分别设计引物,用半定量RT-PCR检测验证。结果在21522条基因中,两组细胞间的差异表达基因有740条,其中上调基因405条,下调基因335条。差异基因中有73条功能信息不明。随机选取的3个差异表达基因的RT-PCR结果与基因芯片扫描结果相似,具有相同的方向性。结论胃癌的发生发展是多基因相互作用、多种信号通路相互调节的结果。生物信息学分析显示,E2F-1基因可以通过TP53信号传导途径影响胃癌MGC-803细胞生物学行为的改变,还与众多基因的差异性表达密切相关。 展开更多
关键词 胃癌 E2F-1 基因表达谱芯片 差异表达基因
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NB4细胞诱导分化过程中WT1、RbAp46及IGFBP-rP1基因表达水平的变化 被引量:2
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作者 胡绍燕 陈子兴 +2 位作者 顾伟英 沈慧玲 岑建农 《肿瘤》 CAS CSCD 北大核心 2006年第9期810-814,共5页
目的:探讨WT1、RbAp46及IGFBP-rP1基因与NB4细胞诱导分化的关系。方法:利用实时定量RT-PCR方法检测NB4细胞诱导分化不同时间点WT1、RbAp46和IGFBP-rP1基因的表达水平,并用流式细胞仪检测NB4细胞表面抗原CD11b的变化。结果:随着NB4细胞... 目的:探讨WT1、RbAp46及IGFBP-rP1基因与NB4细胞诱导分化的关系。方法:利用实时定量RT-PCR方法检测NB4细胞诱导分化不同时间点WT1、RbAp46和IGFBP-rP1基因的表达水平,并用流式细胞仪检测NB4细胞表面抗原CD11b的变化。结果:随着NB4细胞向粒系终末分化,WT1、IGFBP-rP1基因的表达水平迅速下降。0.5μmol/L全反式维甲酸(all transretinoic acid,ATRA)作用0、4、8、12、24与48 h后WT1N分别为1.91、1.21、0.60、0.44、0.18与0.04;IGFBP-rP1N分别为1.10、0.80、0.54、0.28、0.17与0.15。RbAp46基因的平均表达水平则下降缓慢,分别为2.65、1.86、1.40、1.27、1.48与0.49。NB4细胞处理组WT1基因的改变分别与RbAp46和IGFBP-rP1基因的变化存在相关性(r=0.829,P=0.021;r=1,P<0.001),三者均与CD11b的变化呈负相关(r=-1.0,P<0.001;r=-0.829,P=0.021与r=-1.0,P<0.001)。结论:WT1、RbAp46和IGFBP-rP1基因的高表达可能参与了阻滞NB4细胞分化的过程。 展开更多
关键词 白血病 基因 肾母细胞瘤 基因 视网膜母细胞瘤相关蛋白46 基因 胰岛素样生长因子结合蛋白相关蛋白1 细胞分化 基因表达 NB4细胞
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Nell-1型分子基因对大鼠骨髓基质细胞成骨分化的影响 被引量:5
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作者 胡镜宙 蒋欣泉 +1 位作者 张志愿 张秀丽 《中国口腔颌面外科杂志》 CAS 2009年第1期38-43,共6页
目的:研究Nel-like1型分子(Nell-1)基因对体外培养大鼠骨髓基质细胞(bone marrow stromal cells,bMSCs)成骨分化的影响。方法:实验分为未转染组、转染β-半乳糖苷酶(β-Galactosidase,LacZ)基因的LacZ组以及转染Nell-1基因的Nell-1组。... 目的:研究Nel-like1型分子(Nell-1)基因对体外培养大鼠骨髓基质细胞(bone marrow stromal cells,bMSCs)成骨分化的影响。方法:实验分为未转染组、转染β-半乳糖苷酶(β-Galactosidase,LacZ)基因的LacZ组以及转染Nell-1基因的Nell-1组。取6周龄雄性Fischer344大鼠胫骨和股骨骨髓体外培养,以腺病毒为载体,进行基因转染。以反转录PCR和Western印迹法验证bMSCs中Nell-1基因的表达。以碱性磷酸酶(alkaline phosphatase,ALP)活性定量测定、骨钙素(osteocalcin,OC)含量测定和Von Kossa法检测Nell-1基因转染对bMSCs成骨分化的影响。采用SAS6.04软件包对数据进行随机设计的方差分析(ANOVA-SNK)。结果:Nell-1组可检测到Nell-1基因转录水平和蛋白水平的表达,未转染组和LacZ组未见明显Nell-1基因表达。Nell-1组ALP活性在转染后3d、6d和9d均高于LacZ组和未转染组。Nell-1组在转染后14d、28d时,OC含量分别为(1.23±0.05)ng/mL和(1.31±0.06)ng/mL,高于未转染组的(0.81±0.09)ng/mL和(1.00±0.05)ng/mL,以及LacZ组的(0.92±0.08)ng/mL和(1.02±0.04)ng/mL。钙结节数Nell-1组在转染后21d和28d分别为4.5±1.1和16.2±2.5,高于未转染组的0.8±0.7和3.2±1.2以及LacZ组的0.7±0.5和3.7±0.8,其差异均有显著性(P<0.05)。结论:Nell-1基因可促进体外培养bMSCs的成骨分化。 展开更多
关键词 骨髓基质细胞 Nell-1基因 基因转染 大鼠 成骨分化
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基于生物信息学分析骨肉瘤的关键基因和qRT-PCR实验验证
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作者 李威材 秦刚 +5 位作者 苏国威 刘金富 肖世富 刘俊良 范以东 吴广涛 《实用肿瘤杂志》 CAS 2024年第4期344-355,共12页
目的利用生物信息学方法筛选出与骨肉瘤(osteosarcoma,OS)相关的关键基因,以作为OS的潜在诊断标志物和新治疗靶点。方法从基因表达综合(Gene Expression Omnibus,GEO)数据库中检索下载2个符合本研究的OS相关数据集(GSE16088和GSE42572)... 目的利用生物信息学方法筛选出与骨肉瘤(osteosarcoma,OS)相关的关键基因,以作为OS的潜在诊断标志物和新治疗靶点。方法从基因表达综合(Gene Expression Omnibus,GEO)数据库中检索下载2个符合本研究的OS相关数据集(GSE16088和GSE42572),共包括21例OS组织样本和14例正常骨组织样本。对数据集进行矫正分析鉴定出差异表达基因(differentially expressed genes,DEGs)。通过加权基因共表达网络分析方法(weighted gene co-expression network analysis,WGCNA)与DEGs筛选出交集基因。对交集基因进行疾病本体论(Disease Ontology,DO)、基因本体论(Gene Ontology,GO)、京都基因与基因组百科全书分析(Kyoto Encyclopedia of Genes and Genomes,KEGG)和蛋白互作(protein-protein interaction,PPI)网络分析。采用受试者工作特征(receiver operating characteristic,ROC)曲线评估该PPI网络degree排名前10位的Hubbe基因的表达水平对OS患者的诊断效能,并以另一个OS数据集GSE19276对Hubbe基因进行验证筛选出关键基因。分析关键基因与浸润性免疫细胞的相关性。收集2020年9月1日至2022年6月30日于广西中医药大学第一附属医院住院手术的4例OS患者的OS组织及其癌旁组织,采用实时荧光定量聚合酶链式反应(real-time quantitative polymerase chain reaction,qRT-PCR)对关键基因进行实验验证。结果在OS组织与正常骨组织中共筛选出687个DEGs(上调基因523个和下调基因164个)。WGCNA关键模块基因2338个。DEGs与WGCNA关键模块基因共有交集基因545个。DO富集分析结果表明,DEGs与WGCNA结果的交集基因主要与泌尿系统癌症、肾癌、生殖细胞癌、肌肉骨骼系统癌症和胚胎癌等癌症相关。GO富集结果表明,交集基因主要参与骨化的形成、细胞外基质组织和生物矿物组织发育等生物学过程。KEGG通路富集在磷脂酰肌醇3激酶(phosphatidylinositide 3-kinase,PI3K)/蛋白激酶B(protein kinase B,PKB,又名Akt)信号通路、过氧化物酶体增殖物激活受体(peroxisome proliferators-activated receptor,PPAR)信号通路及流体剪切应力和动脉粥样硬化等信号通路上。PPI网络分析中degree排名前10位的Hubbe基因为磷脂酰肌醇4,5-二磷酸3-激酶催化亚基α(phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha,PIK3CA)、脯氨酰4-羟化酶亚单位α1(prolyl 4-hydroxylase subunit alpha 1,P4HA1)、整合素αⅤ(integrin alphaⅤ,ITGAⅤ)、组蛋白去乙酰化酶2(histone deacetylase 2,HDAC2)、连环蛋白β1(catenin beta 1,CTNNB1)、Ⅲ型胶原蛋白α1(collagen typeⅢalpha 1,COL3A1)、Ⅰ型胶原蛋白α2(collagen typeⅠalpha 2,COL1A2)、转导蛋白β样1X相关蛋白1(transducin beta-like 1X-related protein 1,TBL1XR1)、小核核糖核蛋白多肽G(small nuclear ribonucleoprotein polypeptide G,SNRPG)和Ras相关核蛋白(Ras-related nuclear protein,RAN)。以数据集GSE19276绘制ROC曲线验证Hubbe基因表明,P4HA1和ITGAV的准确度较高(均AUC>0.8且P<0.05)。qRT-PCR实验结果显示,P4HA1和ITGAV mRNA在OS组织中高表达(均P<0.01)。结论P4HA1和ITGAV是OS的潜在生物标志物和治疗靶点。 展开更多
关键词 骨肉瘤 生物信息学 差异表达基因 加权基因共表达网络分析 QRT-PCR 脯氨酰4-羟化酶亚单位α1 整合素αⅤ
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