To study the gene expression profiles between immunologically injured liver cell and normal liver cell of mice and to screen on a large scale the differentially expressed genes associated with the formation of liver i...To study the gene expression profiles between immunologically injured liver cell and normal liver cell of mice and to screen on a large scale the differentially expressed genes associated with the formation of liver injury,the experimental mice were randomly divided into the normal group for controlling and the immunologically liver-injured group induced by BCG and LPS.The liver mRNA of the two groups were extracted respectively and reversely-transcribed to cDNA with the incorpora-tion of different fluorescence(Cy3,Cy5) labeled dUTP as the hybridization probes.The mixed probes were hybridized to the cDNA microarray chips.The fluorescent signal results were acquired by scanner ScanArray 4000 and analyzed with software GenePix Pro 3.0.Among the 14112 target genes,293 genes were found to be significantly differentially expressed,in which 188 genes were up-regulated and 105 genes were down-regulated.Based on the analysis of biological functions of those differentially expressed genes,it was indicated that the occurrence and development of mouse liver damage induced by BCG and LPS were highly correlated with the processes of immune reac-tions,cell synthesis,metabolism,apoptosis and transportation in liver cell,which might be quite im-portant for elucidating the regulatory network of gene expression associated with the liver damage,also important for finally discovering the pathogenic mechanisms of immunological liver damage.展开更多
A new method for the preparation of oligonucleotide microarray for gene expression detection was found. The key techniques and standards of quality controlling for preparation of oligonucleotide microarray was explore...A new method for the preparation of oligonucleotide microarray for gene expression detection was found. The key techniques and standards of quality controlling for preparation of oligonucleotide microarray was explored using gene of human 23kD highly protein and Luciferase and mouse cytokine-associated genes. By the using of a software system MProbe, oligonucleotide probes were designed and BLAST. All the probes have a very high specificity, i.e. except target sequence, the similarity between the probe and non-target sequences is less than 70% and the hairpin structure are not exist in all probes.All the probes have the same length 40. GC contents in all probes are in a narrow scope (from 45% to 55%). All the probes are modified with amino at 5′ or 3′ terminal. The satisfied images with good sensativity and very high specificity were obtained by the using of the methods above and also using of positive and negative controls and some internal controls(house keeping gene) to quantitate and balance expression of genes. High specificity, good sensativity and stablity have been verified by three continuous experiments using the oligonucleotide microarray to study gene expression profile of normal mouse breast grand tissue .The oligonucleotide microarray for expression detection prepared using our method have high specificity, good sensativity and stablity et al . It may be a more advanced method for analysis of gene expression profile.展开更多
目的运用基因芯片技术,研究首次完全缓解持续时间(CCR1)相差显著的急性髓系白血病(AML)M2a亚型之间基因表达谱差异,寻找影响AML-M2a预后相关基因。方法应用Agilent Human 1B寡核苷酸基因芯片,检测3例CCR1 6个月内复发(A组)和3例CCR1 12...目的运用基因芯片技术,研究首次完全缓解持续时间(CCR1)相差显著的急性髓系白血病(AML)M2a亚型之间基因表达谱差异,寻找影响AML-M2a预后相关基因。方法应用Agilent Human 1B寡核苷酸基因芯片,检测3例CCR1 6个月内复发(A组)和3例CCR1 12个月以上(B组)的AML-M2a患者初诊时骨髓单个细胞基因表达谱及其差异。结果在检测的20173个基因中,筛选出共同差异表达基因共22个,其中在A组各例都表达上调的基因有10个,同时表达下调的基因有12个。结论APP等22个基因的表达可能与接受常规方案标准剂量化疗的AML-M2a首次完全缓解持续时间有关,可能成为早期诊断难治性AML的指标。展开更多
文摘To study the gene expression profiles between immunologically injured liver cell and normal liver cell of mice and to screen on a large scale the differentially expressed genes associated with the formation of liver injury,the experimental mice were randomly divided into the normal group for controlling and the immunologically liver-injured group induced by BCG and LPS.The liver mRNA of the two groups were extracted respectively and reversely-transcribed to cDNA with the incorpora-tion of different fluorescence(Cy3,Cy5) labeled dUTP as the hybridization probes.The mixed probes were hybridized to the cDNA microarray chips.The fluorescent signal results were acquired by scanner ScanArray 4000 and analyzed with software GenePix Pro 3.0.Among the 14112 target genes,293 genes were found to be significantly differentially expressed,in which 188 genes were up-regulated and 105 genes were down-regulated.Based on the analysis of biological functions of those differentially expressed genes,it was indicated that the occurrence and development of mouse liver damage induced by BCG and LPS were highly correlated with the processes of immune reac-tions,cell synthesis,metabolism,apoptosis and transportation in liver cell,which might be quite im-portant for elucidating the regulatory network of gene expression associated with the liver damage,also important for finally discovering the pathogenic mechanisms of immunological liver damage.
文摘A new method for the preparation of oligonucleotide microarray for gene expression detection was found. The key techniques and standards of quality controlling for preparation of oligonucleotide microarray was explored using gene of human 23kD highly protein and Luciferase and mouse cytokine-associated genes. By the using of a software system MProbe, oligonucleotide probes were designed and BLAST. All the probes have a very high specificity, i.e. except target sequence, the similarity between the probe and non-target sequences is less than 70% and the hairpin structure are not exist in all probes.All the probes have the same length 40. GC contents in all probes are in a narrow scope (from 45% to 55%). All the probes are modified with amino at 5′ or 3′ terminal. The satisfied images with good sensativity and very high specificity were obtained by the using of the methods above and also using of positive and negative controls and some internal controls(house keeping gene) to quantitate and balance expression of genes. High specificity, good sensativity and stablity have been verified by three continuous experiments using the oligonucleotide microarray to study gene expression profile of normal mouse breast grand tissue .The oligonucleotide microarray for expression detection prepared using our method have high specificity, good sensativity and stablity et al . It may be a more advanced method for analysis of gene expression profile.
文摘目的运用基因芯片技术,研究首次完全缓解持续时间(CCR1)相差显著的急性髓系白血病(AML)M2a亚型之间基因表达谱差异,寻找影响AML-M2a预后相关基因。方法应用Agilent Human 1B寡核苷酸基因芯片,检测3例CCR1 6个月内复发(A组)和3例CCR1 12个月以上(B组)的AML-M2a患者初诊时骨髓单个细胞基因表达谱及其差异。结果在检测的20173个基因中,筛选出共同差异表达基因共22个,其中在A组各例都表达上调的基因有10个,同时表达下调的基因有12个。结论APP等22个基因的表达可能与接受常规方案标准剂量化疗的AML-M2a首次完全缓解持续时间有关,可能成为早期诊断难治性AML的指标。
