共查询到20条相似文献,搜索用时 31 毫秒
1.
Stéphane Roche Laurent Tiers Monique Provansal Marie-Thérèse Piva Sylvain Lehmann 《Proteome science》2006,4(1):20
Background
Surface-Enhanced Laser Desorption/Ionization – Time Of Flight (SELDI-TOF) has been proposed as new approach for blood biomarker discovery. However, results obtained so far have been often disappointing as this technique still has difficulties to detect low-abundant plasma and serum proteins. 相似文献2.
Background
Gene silencing using exogenous small interfering RNAs (siRNAs) is now a widespread molecular tool for gene functional study and new-drug target identification. The key mechanism in this technique is to design efficient siRNAs that incorporated into the RNA-induced silencing complexes (RISC) to bind and interact with the mRNA targets to repress their translations to proteins. Although considerable progress has been made in the computational analysis of siRNA binding efficacy, few joint analysis of different RNAi experiments conducted under different experimental scenarios has been done in research so far, while the joint analysis is an important issue in cross-platform siRNA efficacy prediction. A collective analysis of RNAi mechanisms for different datasets and experimental conditions can often provide new clues on the design of potent siRNAs. 相似文献3.
4.
Sébastien Lageix Elodie Lanet Marie-Noëlle Pouch-Pélissier Marie-Claude Espagnol Christophe Robaglia Jean-Marc Deragon Thierry Pélissier 《BMC plant biology》2008,8(1):134
Background
Phosphorylation of eIF2α provides a key mechanism for down-regulating protein synthesis in response to nutrient starvation or stresses in mammalian and yeast cells. However, this process has not been well characterized in plants 相似文献5.
Alberto Pascual-Montano Pedro Carmona-Saez Monica Chagoyen Francisco Tirado Jose M Carazo Roberto D Pascual-Marqui 《BMC bioinformatics》2006,7(1):366-9
Background
In the Bioinformatics field, a great deal of interest has been given to Non-negative matrix factorization technique (NMF), due to its capability of providing new insights and relevant information about the complex latent relationships in experimental data sets. This method, and some of its variants, has been successfully applied to gene expression, sequence analysis, functional characterization of genes and text mining. Even if the interest on this technique by the bioinformatics community has been increased during the last few years, there are not many available simple standalone tools to specifically perform these types of data analysis in an integrated environment. 相似文献6.
Background
Health risk from exposure of perfluorochemicals (PFCs) to wildlife and human has been a subject of great interest for understanding their molecular mechanism of toxicity. Although much work has been done, the toxigenicity of PFCs remains largely unknown. In this work, the non-covalent interactions between perfluorooctane sulfonate (PFOS) and serum albumin (SA) and DNA were investigated under normal physiological conditions, aiming to elucidate the toxigenicity of PFCs. 相似文献7.
8.
Alexander Pérez-Ruiz Margarida Julià-Sapé Guillem Mercadal Iván Olier Carles Majós Carles Arús 《BMC bioinformatics》2010,11(1):581
Background
Proton Magnetic Resonance (MR) Spectroscopy (MRS) is a widely available technique for those clinical centres equipped with MR scanners. Unlike the rest of MR-based techniques, MRS yields not images but spectra of metabolites in the tissues. In pathological situations, the MRS profile changes and this has been particularly described for brain tumours. However, radiologists are frequently not familiar to the interpretation of MRS data and for this reason, the usefulness of decision-support systems (DSS) in MRS data analysis has been explored. 相似文献9.
Antonio Lauto Damia Mawad Matthew Barton Abhishek Gupta Sabine C Piller James Hook 《Biomedical engineering online》2010,9(1):47
Background
Photochemical tissue bonding (PTB) is a promising sutureless technique for tissue repair. PTB is often achieved by applying a solution of rose bengal (RB) between two tissue edges, which are irradiated by a green laser to crosslink collagen fibers with minimal heat production. In this study, RB has been incorporated in chitosan films to create a novel tissue adhesive that is laser-activated. 相似文献10.
Background
Migraine has been associated with cardiovascular disorders. Endothelial dysfunction may be a mechanism underlying this association. The present study tested the hypothesis that endothelium-dependent vasodilation, basal endothelial nitric oxide release and endothelial fibrinolytic capacity are impaired in migraine patients. 相似文献11.
12.
Masaaki Tanaka Norihiro Sadato Tomohisa Okada Kei Mizuno Tetsuya Sasabe Hiroki C Tanabe Daisuke N Saito Hirotaka Onoe Hirohiko Kuratsune Yasuyoshi Watanabe 《BMC neurology》2006,6(1):9
Background
Although the neural mechanism of chronic fatigue syndrome has been investigated by a number of researchers, it remains poorly understood. 相似文献13.
Yian A Chen Cheng-Chung Chou Xinghua Lu Elizabeth H Slate Konan Peck Wenying Xu Eberhard O Voit Jonas S Almeida 《BMC bioinformatics》2006,7(1):101-12
Background
Expression microarray analysis is one of the most popular molecular diagnostic techniques in the post-genomic era. However, this technique faces the fundamental problem of potential cross-hybridization. This is a pervasive problem for both oligonucleotide and cDNA microarrays; it is considered particularly problematic for the latter. No comprehensive multivariate predictive modeling has been performed to understand how multiple variables contribute to (cross-) hybridization. 相似文献14.
Background
DNA replication in higher eukaryotic cells is organized in discrete subnuclear sites called replication foci (RF). During the S phase, most replication proteins assemble at the RF by interacting with PCNA via a PCNA binding domain (PBD). This has been shown to occur for many mammalian replication proteins, but it is not known whether this mechanism is conserved in evolution. 相似文献15.
Background
The multilocus variable-number tandem repeat (VNTR) analysis (MLVA) technique has been developed for fine typing of many bacterial species. The genomic sequences of Neisseria meningitidis strains Z2491, MC58 and FAM18 have been available for searching potential VNTR loci by computer software. In this study, we developed and evaluated a MLVA method for molecular subtyping and phylogenetic analysis of N. meningitidis strains. 相似文献16.
Background
RNA silencing occurs in a broad range of organisms. Although its ancestral function is probably related to the genome defense mechanism against repetitive selfish elements, it has been found that RNA silencing regulates different cellular processes such as gene expression and chromosomal segregation. In Neurospora crassa, a RNA silencing mechanism, called quelling, acts to repress the expression of transgenes and transposons, but until now no other cellular functions have been shown to be regulated by this mechanism. 相似文献17.
Yunjiao Wang Pawel Paszek Caroline A Horton Douglas B Kell Michael RH White David S Broomhead Mark R Muldoon 《BMC systems biology》2011,5(1):23
Background
Sustained stimulation with tumour necrosis factor alpha (TNF-alpha) induces substantial oscillations—observed at both the single cell and population levels—in the nuclear factor kappa B (NF-kappa B) system. Although the mechanism has not yet been elucidated fully, a core system has been identified consisting of a negative feedback loop involving NF-kappa B (RelA:p50 hetero-dimer) and its inhibitor I-kappa B-alpha. Many authors have suggested that this core oscillator should couple to other oscillatory pathways. 相似文献18.
Background
Upstream open reading frames (uORFs) can mediate translational control over the largest, or major ORF (mORF) in response to starvation, polyamine concentrations, and sucrose concentrations. One plant uORF with conserved peptide sequences has been shown to exert this control in an amino acid sequence-dependent manner but generally it is not clear what kinds of genes are regulated, or how extensively this mechanism is invoked in a given genome. 相似文献19.
Wentao Ma 《Biology direct》2010,5(1):65
Background
It is now believed that in the origin of life, proteins should have been "invented" in an RNA world. However, due to the complexity of a possible RNA-based proto-translation system, this evolving process seems quite complicated and the associated scenario remains very blurry. Considering that RNA can bind amino acids with specificity, it has been reasonably supposed that initial peptides might have been synthesized on "RNA templates" containing multiple amino acid binding sites. This "Direct RNA Template (DRT)" mechanism is attractive because it should be the simplest mechanism for RNA to synthesize peptides, thus very likely to have been adopted initially in the RNA world. Then, how this mechanism could develop into a proto-translation system mechanism is an interesting problem. 相似文献20.
Alexia?Hermanny M?Valeria?Bahamondes Francisco?Fazano Nadia?M?Marchi Maria?Elena?Ortiz Maria?Heloisa?RR?Genghini Horacio?B?Croxatto Luis?Bahamondes