Objective: To diagnose prostatic cancer (CaP) with cDNA macroarray. Methods: Total RNA was isolated from patients with prostate cancer and from normal people, and poly(A) RNA was further purified. Then differentially ...Objective: To diagnose prostatic cancer (CaP) with cDNA macroarray. Methods: Total RNA was isolated from patients with prostate cancer and from normal people, and poly(A) RNA was further purified. Then differentially expressed genes were analysed in CaP and normal prostate by cDNA macroarray system. Results: There were differential expressions of nine prostate-associated specific genes in CaP as compared with normal prostate, among which, 7 were significantly up-regulated and 2 were down-regulated. Conclusion: As a diagnostic approach at molecular level, the cDNA macroarray is supposed to elevate the detection rate of CaP.展开更多
This study focused on defining the differences in L. plantarum gene expression levels in different media and in different growth phases using an easy and cost-efficient monitoring of gene expression. A macroarray base...This study focused on defining the differences in L. plantarum gene expression levels in different media and in different growth phases using an easy and cost-efficient monitoring of gene expression. A macroarray based on a group of selected L. plantarum genes, 178 genes belonging to 18 main groups, printed onto a nitrocellulose filter was designed in this work. Using the macrofilters designed, the expression of a selected set of L. plantarum genes was assayed in synthetic MRS medium and in extracted carrot juice. To compare the potential differences of starter gene expression in hygienic and contaminated cultivation media, the L. plantarum strain was cultivated in both sterile and contaminated (yeast and Escherichia coli) MRS and carrot juice. The number of genes found to be regulated as a function of growth was clearly higher in MRS-based growth medium than in carrot juice, In carrot juice, expression of the gene encoding malolactic enzyme (MLE), which makes L. plantarum an advantageous microbe in e.g. wine making, was found to be upregulated in logarithmic phase of growth. The current study demonstrated that macroarrays printed on nitrocellulose filters with simple robotic systems can be analyzed by standard laboratory equipment and methods usually available in molecular laboratories. Using this technology, rapid and cost-efficient analysis of genome function of L. plantarum can be carried out e.g. in developing regions, where lactic acid fermentation of food and feed matrices is a common practice.展开更多
Background Early diagnosis and timely treatment are important for improving therapeutic efficiency of prostate cancer. DNA array is a new bio-technology for disease diagnosis. This study was conducted to diagnose pros...Background Early diagnosis and timely treatment are important for improving therapeutic efficiency of prostate cancer. DNA array is a new bio-technology for disease diagnosis. This study was conducted to diagnose prostate cancer with cDNA macroarray and analysis gene expression profiles of some selective genes in prostate cancer. Methods Total RNA was isolated from patients with prostate cancer and from normal people, and poly（A） RNA was further purified. Then it was analyzed for differentially expressed genes in prostate cancer and normal prostate by cDNA macroarray system. Results There were different expressions in the nine prostate-associated specific genes in prostate cancer as compared with normal prostate, in which, 7 were significantly upregulated and 2 were down-regulated. Conclusion As a diagnostic approach at molecular level, the cDNA macroarray is an effectively diagnostic method for orostate cancer.展开更多
文摘目的:建立一种特异、相对简便的H IV流行毒株基因分型新技术。方法:从H IV-1抗体阳性标本中提取H IV前病毒DNA,使用H IV-1型共用引物进行PCR扩增。同时设计一条型特异性的探针,然后通过制作DNA m acroarray芯片,鉴别样本的H IV亚型。结果:DNA m acroarray分析可以检测我国H IV主要流行株基因型的特异性序列:B、C、CRF01-AE和CRF07-BC。结论:DNA m acroarray方法对H IV亚型进行分析是可行的,可以在H IV流行病学调查中应用。
文摘Objective: To diagnose prostatic cancer (CaP) with cDNA macroarray. Methods: Total RNA was isolated from patients with prostate cancer and from normal people, and poly(A) RNA was further purified. Then differentially expressed genes were analysed in CaP and normal prostate by cDNA macroarray system. Results: There were differential expressions of nine prostate-associated specific genes in CaP as compared with normal prostate, among which, 7 were significantly up-regulated and 2 were down-regulated. Conclusion: As a diagnostic approach at molecular level, the cDNA macroarray is supposed to elevate the detection rate of CaP.
基金Tekes,the Finnish Funding Agency for Technology and Innovation,is gratefully acknowledged for the financial support of this work.
文摘This study focused on defining the differences in L. plantarum gene expression levels in different media and in different growth phases using an easy and cost-efficient monitoring of gene expression. A macroarray based on a group of selected L. plantarum genes, 178 genes belonging to 18 main groups, printed onto a nitrocellulose filter was designed in this work. Using the macrofilters designed, the expression of a selected set of L. plantarum genes was assayed in synthetic MRS medium and in extracted carrot juice. To compare the potential differences of starter gene expression in hygienic and contaminated cultivation media, the L. plantarum strain was cultivated in both sterile and contaminated (yeast and Escherichia coli) MRS and carrot juice. The number of genes found to be regulated as a function of growth was clearly higher in MRS-based growth medium than in carrot juice, In carrot juice, expression of the gene encoding malolactic enzyme (MLE), which makes L. plantarum an advantageous microbe in e.g. wine making, was found to be upregulated in logarithmic phase of growth. The current study demonstrated that macroarrays printed on nitrocellulose filters with simple robotic systems can be analyzed by standard laboratory equipment and methods usually available in molecular laboratories. Using this technology, rapid and cost-efficient analysis of genome function of L. plantarum can be carried out e.g. in developing regions, where lactic acid fermentation of food and feed matrices is a common practice.
文摘Background Early diagnosis and timely treatment are important for improving therapeutic efficiency of prostate cancer. DNA array is a new bio-technology for disease diagnosis. This study was conducted to diagnose prostate cancer with cDNA macroarray and analysis gene expression profiles of some selective genes in prostate cancer. Methods Total RNA was isolated from patients with prostate cancer and from normal people, and poly（A） RNA was further purified. Then it was analyzed for differentially expressed genes in prostate cancer and normal prostate by cDNA macroarray system. Results There were different expressions in the nine prostate-associated specific genes in prostate cancer as compared with normal prostate, in which, 7 were significantly upregulated and 2 were down-regulated. Conclusion As a diagnostic approach at molecular level, the cDNA macroarray is an effectively diagnostic method for orostate cancer.
