Results 111 to 120 of about 12,165,430 (302)

Hypoxic and ischemic effects on gene and protein expression levels of paracrine factors by human olfactory mucosa mesenchymal-like stem cells

open access: yesJournal of Neurorestoratology, 2016
Ting Yuan,1* Yi Zhuo,1* Chaying Su,2 Xuan Li,1 Da Duan,1 Lite Ge,1 Pei Wu,1 Hao Wang,1 Yujia Deng,1 Ming Lu1 1Department of Neurosurgery, Second Affiliated Hospital of Hunan Normal University (163 Hospital of the People’s Liberation Army), Changsha,
Yuan T   +9 more
doaj  

Hydra vulgaris exhibits day-night variation in behavior and gene expression levels

open access: yesZoological Letters, 2019
Background Day–night behavioral variation is observed in most organisms, and is generally controlled by circadian clocks and/or synchronization to environmental cues.
Hiroyuki J. Kanaya   +2 more
doaj   +1 more source

The distance between Escherichia coli genes is related to gene expression levels [PDF]

open access: yesJournal of Bacteriology, 1995
It is shown that the distance between Escherichia coli genes oriented in the same direction on the chromosome is positively correlated to the expression level of the downstream gene. It is suggested that this could be a strategy to avoid interference between ribosomes translating two different genes.
openaire   +2 more sources

Reconstructing enzyme evolution by protein engineering

open access: yesFEBS Letters, EarlyView.
Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler   +2 more
wiley   +1 more source

clustering of microarray gene expression data

open access: yes, 2005
Motivation: Cluster analysis of gene expression profiles has been widely applied to clustering genes for gene function discovery. Many approaches have been proposed.
Gene Expression, Wei Pan
core  

Investigating transcription factor dynamics in health and disease using FRAP

open access: yesFEBS Letters, EarlyView.
FRAP analysis of GFP‐tagged transcription factors reveals how molecular mobility and target engagement change in response to drug treatment. By combining live‐cell imaging, quantitative model fitting, and statistical analysis, this approach uncovers transcription factor dynamics linked to disease mechanisms, providing a powerful framework for ...
Kannan Govindaraj   +3 more
wiley   +1 more source

Balancing noise and plasticity in gene expression [PDF]

open access: yes, 2011
Coupling the control of expression stochasticity (noise) with the capacity to expression change (plasticity) can constrain gene function and limit adaptation. Which factors contribute then to modulate this coupling?
Juan F. Poyatos, Djordje Bajic
core  

Unexpected correlations between gene expression and codon usage bias from microarray data for the whole Escherichia coli K-12 genome [PDF]

open access: yes, 2003
Escherichia coli has long been regarded as a model organism in the study of codon usage bias (CUB). However, most studies in this organism regarding this topic have been computational or, when experimental, restricted to small datasets; particularly poor
Savva, Renos   +2 more
core   +1 more source

Amplified and Homozygously Deleted Genes in Glioblastoma: Impact on Gene Expression Levels

open access: yesPLoS ONE, 2012
Glioblastoma multiforme (GBM) displays multiple amplicons and homozygous deletions that involve relevant pathogenic genes and other genes whose role remains unknown.Single-nucleotide polymorphism (SNP)-arrays were used to determine the frequency of recurrent amplicons and homozygous deletions in GBM (n = 46), and to evaluate the impact of copy number ...
Crespo, Inês   +11 more
openaire   +8 more sources

Microbiome‐blood–brain barrier interactions in aging — mechanisms and therapeutic potential

open access: yesFEBS Letters, EarlyView.
Aging reshapes the gut microbiome (↓SCFA‐producing commensals; ↑pro‐inflammatory outputs), shifting circulating metabolites (↓SCFAs; ↑LPS, ↑TMAO, ↑PAA) that act at the BBB to increase nonspecific transcytosis, alter transport, and promote astrocyte reactivity, heightening brain vulnerability.
Daniel Cuervo‐Zanatta   +3 more
wiley   +1 more source

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