共查询到20条相似文献,搜索用时 15 毫秒
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Pamela A Nieto Paulo C Covarrubias Eugenia Jedlicki David S Holmes Raquel Quatrini 《BMC molecular biology》2009,10(1):63
Background
Normalization is a prerequisite for accurate real time PCR (qPCR) expression analysis and for the validation of microarray profiling data in microbial systems. The choice and use of reference genes that are stably expressed across samples, experimental conditions and designs is a key consideration for the accurate interpretation of gene expression data. 相似文献3.
Mónica Martínez-Fernández Louis Bernatchez Emilio Rolán-Alvarez Humberto Quesada 《BMC evolutionary biology》2010,10(1):356
Background
In the past 40 years, there has been increasing acceptance that variation in levels of gene expression represents a major source of evolutionary novelty. Gene expression divergence is therefore likely to be involved in the emergence of incipient species, namely, in a context of adaptive radiation. In this study, a genome-wide expression profiling approach (cDNA-AFLP), validated by quantitative real-time polymerase chain reaction (qPCR) were used to get insights into the role of differential gene expression on the ecological adaptation of the marine snail Littorina saxatilis. This gastropod displays two sympatric ecotypes (RB and SU) which are becoming one of the best studied systems for ecological speciation. 相似文献4.
Background
Microarray expression profiling has been widely used to identify differentially expressed genes in complex cellular systems. However, while such methods can be used to directly infer intracellular regulation within homogeneous cell populations, interpretation of in vivo gene expression data derived from complex organs composed of multiple cell types is more problematic. Specifically, observed changes in gene expression may be due either to changes in gene regulation within a given cell type or to changes in the relative abundance of expressing cell types. Consequently, bona fide changes in intrinsic gene regulation may be either mimicked or masked by changes in the relative proportion of different cell types. To date, few analytical approaches have addressed this problem. 相似文献5.
Background
The combination of gene expression profiling with linkage analysis has become a powerful paradigm for mapping gene expression quantitative trait loci (eQTL). To date, most studies have searched for eQTL by analyzing gene expression traits one at a time. As thousands of expression traits are typically analyzed, this can reduce power because of the need to correct for the number of hypothesis tests performed. In addition, gene expression traits exhibit a complex correlation structure, which is ignored when analyzing traits individually. 相似文献6.
Cell membrane array fabrication and assay technology 总被引:1,自引:0,他引:1
Background
Microarray technology has been used extensively over the past 10 years for assessing gene expression, and has facilitated precise genetic profiling of everything from tumors to small molecule drugs. By contrast, arraying cell membranes in a manner which preserves their ability to mediate biochemical processes has been considerably more difficult. 相似文献7.
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Junior Barrera Roberto M CesarJr Carlos HumesJr David C MartinsJr Diogo FC Patrão Paulo JS Silva Helena Brentani 《BMC bioinformatics》2007,8(1):169
Background
One goal of gene expression profiling is to identify signature genes that robustly distinguish different types or grades of tumors. Several tumor classifiers based on expression profiling have been proposed using microarray technique. Due to important differences in the probabilistic models of microarray and SAGE technologies, it is important to develop suitable techniques to select specific genes from SAGE measurements. 相似文献9.
Hongbo Zhao Qishan Wang Chunyan Bai Kan He Yuchun Pan 《Reproductive biology and endocrinology : RB&E》2009,7(1):94
Background
Endometriosis is an enigmatic disease. Gene expression profiling of endometriosis has been used in several studies, but few studies went further to classify subtypes of endometriosis based on expression patterns and to identify possible pathways involved in endometriosis. Some of the observed pathways are more inconsistent between the studies, and these candidate pathways presumably only represent a fraction of the pathways involved in endometriosis. 相似文献10.
Background
Microarray profiling has the potential to illuminate the molecular processes that govern the phenotypic characteristics of porcine skeletal muscles, such as hypertrophy or atrophy, and the expression of specific fibre types. This information is not only important for understanding basic muscle biology but also provides underpinning knowledge for enhancing the efficiency of livestock production. 相似文献11.
Background
A key step in the analysis of microarray expression profiling data is the identification of genes that display statistically significant changes in expression signals between two biological conditions. 相似文献12.
Ivan Borozan Limin Chen Bryan Paeper Jenny E Heathcote Aled M Edwards Michael Katze Zhaolei Zhang Ian D McGilvray 《BMC bioinformatics》2008,9(1):305
Background
Gene expression profiling has the potential to unravel molecular mechanisms behind gene regulation and identify gene targets for therapeutic interventions. As microarray technology matures, the number of microarray studies has increased, resulting in many different datasets available for any given disease. The increase in sensitivity and reliability of measurements of gene expression changes can be improved through a systematic integration of different microarray datasets that address the same or similar biological questions. 相似文献13.
Yang Li Morris A Swertz Gonzalo Vera Jingyuan Fu Rainer Breitling Ritsert C Jansen 《BMC bioinformatics》2009,10(1):188-7
Background
High-dimensional biomolecular profiling of genetically different individuals in one or more environmental conditions is an increasingly popular strategy for exploring the functioning of complex biological systems. The optimal design of such genetical genomics experiments in a cost-efficient and effective way is not trivial. 相似文献14.
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Soroush Sharbati-Tehrani Barbara Kutz-Lohroff Ramona Bergbauer Jutta Scholven Ralf Einspanier 《BMC molecular biology》2008,9(1):34
Background
MicroRNAs (miRNAs) are small endogenous non-coding interfering RNA molecules regarded as major regulators in eukaryotic gene expression. Different methods are employed for miRNA expression profiling. For a better understanding of their role in essential biological processes, convenient methods for differential miRNA expression analysis are required. 相似文献16.
Ulrike Mueckstein Germán G Leparc Alexandra Posekany Ivo Hofacker David P Kreil 《BMC bioinformatics》2010,11(1):35
Background
While microarrays are the predominant method for gene expression profiling, probe signal variation is still an area of active research. Probe signal is sequence dependent and affected by probe-target binding strength and the competing formation of probe-probe dimers and secondary structures in probes and targets. 相似文献17.
Tomáš Pluskal Sandra Castillo Alejandro Villar-Briones Matej Orešič 《BMC bioinformatics》2010,11(1):395
Background
Mass spectrometry (MS) coupled with online separation methods is commonly applied for differential and quantitative profiling of biological samples in metabolomic as well as proteomic research. Such approaches are used for systems biology, functional genomics, and biomarker discovery, among others. An ongoing challenge of these molecular profiling approaches, however, is the development of better data processing methods. Here we introduce a new generation of a popular open-source data processing toolbox, MZmine 2. 相似文献18.
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