Abstract:
:The involvement of heat-inducible genes, including the heat-shock genes, in the acute response to temperature stress is well established. However, their importance in genetic adaptation to long-term temperature stress is less clear. Here we use high-density arrays to examine changes in expression for 35 heat-inducible genes in three independent lines of Escherichia coli that evolved at high temperature (41.5 degrees C) for 2,000 generations. These lines exhibited significant changes in heat-inducible gene expression relative to their ancestor, including parallel changes in fkpA, gapA, and hslT. As a group, the heat-inducible genes were significantly more likely than noncandidate genes to have evolved changes in expression. Genes encoding molecular chaperones and ATP-dependent proteases, key components of the cytoplasmic stress response, exhibit relatively little expression change; whereas genes with periplasmic functions exhibit significant expression changes suggesting a key role for the extracytoplasmic stress response in the adaptation to high temperature. Following acclimation at 41.5 degrees C, two of the three lines exhibited significantly improved survival at 50 degrees C, indicating changes in inducible thermotolerance. Thus evolution at high temperature led to significant changes at the molecular level in heat-inducible gene expression and at the organismal level in inducible thermotolerance and fitness.
journal_name
Physiol Genomicsjournal_title
Physiological genomicsauthors
Riehle MM,Bennett AF,Lenski RE,Long ADdoi
10.1152/physiolgenomics.00034.2002subject
Has Abstractpub_date
2003-06-24 00:00:00pages
47-58issue
1eissn
1094-8341issn
1531-2267pii
00034.2002journal_volume
14pub_type
杂志文章abstract::Hypertension poses a significant challenge to vasculature homeostasis and stands as the most common cardiovascular disease in the world. Its effects are especially profound on endothelial cells that form the inner lining of the vasculature and are directly exposed to the effects of excess pressure. Here, we characteri...
journal_title:Physiological genomics
pub_type: 杂志文章
doi:10.1152/physiolgenomics.00111.2017
更新日期:2018-02-01 00:00:00
abstract::Piscirickettsia salmonis is the intracellular bacterium that causes salmonid rickettsial septicemia, an infectious disease that kills millions of farmed fish each year. The mechanisms used by P. salmonis to survive and replicate within host cells are not known. Piscirickettsiosis causes severe necrosis of hematopoieti...
journal_title:Physiological genomics
pub_type: 杂志文章
doi:10.1152/physiolgenomics.00036.2004
更新日期:2004-12-15 00:00:00
abstract::Repair and regeneration are key processes for tissue maintenance, and their disruption may lead to disease states. Little is known about the molecular mechanisms that underline the repair and regeneration of the digestive tract. The sea cucumber Holothuria glaberrima represents an excellent model to dissect and charac...
journal_title:Physiological genomics
pub_type: 杂志文章
doi:10.1152/physiolgenomics.00228.2006
更新日期:2007-10-22 00:00:00
abstract::Myosin heavy chain genes (MYHs) are the most important functional domains of myosins, which are highly conserved throughout evolution. The human genome contains 15 MYHs, whereas the corresponding number in teleost appears to be much higher. Although teleosts comprise more than one-half of all vertebrate species, our k...
journal_title:Physiological genomics
pub_type: 杂志文章
doi:10.1152/physiolgenomics.00278.2006
更新日期:2007-12-19 00:00:00
abstract::The liver of dairy cows is involved in signaling the current hepatic metabolic state to the brain via metabolites and nerval afferents to control and adjust feed intake. Feed deprivation may result in mobilization of body reserves favoring hepatic steatosis. While the overall metabolic changes are well characterized, ...
journal_title:Physiological genomics
pub_type: 杂志文章
doi:10.1152/physiolgenomics.90381.2008
更新日期:2009-04-10 00:00:00
abstract::Retinoid-related orphan receptor (ROR)α4 is the major RORα isoform expressed in adipose tissues and liver. In this study we demonstrate that RORα-deficient staggerer mice (RORα(sg/sg)) fed with a high-fat diet (HFD) exhibited reduced adiposity and hepatic triglyceride levels compared with wild-type (WT) littermates an...
journal_title:Physiological genomics
pub_type: 杂志文章
doi:10.1152/physiolgenomics.00206.2010
更新日期:2011-07-14 00:00:00
abstract::Although some single polymorphism analyses of the angiotensinogen (AGT) gene have been found to be associated with hypertension, the results are still inconsistent. The objectives of this study are to evaluate the association of the genotype and haplotype distributions of three single-nucleotide polymorphisms (SNPs) (...
journal_title:Physiological genomics
pub_type: 杂志文章
doi:10.1152/physiolgenomics.00133.2003
更新日期:2004-04-13 00:00:00
abstract::We analyzed the global transcriptional response of Saccharomyces cerevisiae cells exposed to different concentrations of CsCl in the growth medium and at different times after addition. Early responsive genes were mainly involved in cell wall structure and biosynthesis. About half of the induced genes were previously ...
journal_title:Physiological genomics
pub_type: 杂志文章
doi:10.1152/physiolgenomics.00251.2007
更新日期:2008-03-14 00:00:00
abstract::Intracranial aneurysm (IA) is a complex genetic disease for which, to date, 10 loci have been identified by linkage. Identification of the risk-conferring genes in the loci has proven difficult, since the regions often contain several hundreds of genes. An approach to prioritize positional candidate genes for further ...
journal_title:Physiological genomics
pub_type: 杂志文章
doi:10.1152/physiolgenomics.00015.2007
更新日期:2007-12-19 00:00:00
abstract::Protein restriction and hypercalcemia result in a urinary concentrating defect in rats and humans. Previous tubular perfusion studies show that there is an increased active urea transport activity in the initial inner medullary (IM) collecting duct in low-protein diet (LPD) and vitamin D (Vit D) animal models. To inve...
journal_title:Physiological genomics
pub_type: 杂志文章
doi:10.1152/physiolgenomics.00129.2009
更新日期:2010-05-01 00:00:00
abstract::The cardiovascular restricted transcription factor CHF1/Hey2 has been previously shown to regulate the smooth muscle response to growth factors. To determine how CHF1/Hey2 affects the smooth muscle response to growth factors, we performed a genomic screen for transcripts that are differentially expressed in wild-type ...
journal_title:Physiological genomics
pub_type: 杂志文章
doi:10.1152/physiolgenomics.00277.2006
更新日期:2007-06-19 00:00:00
abstract::As the amount of information available to biologists increases exponentially, data analysis becomes progressively more challenging. Sequence homology has been a traditional tool in the researchers' armamentarium; it is a very versatile instrument and can be employed to assist in numerous tasks, from establishing the f...
journal_title:Physiological genomics
pub_type: 杂志文章,评审
doi:10.1152/physiolgenomics.00112.2002
更新日期:2002-12-03 00:00:00
abstract::A cDNA microarray resource has been developed with the goal of providing integrated functional genomics resources for cattle. The National Bovine Functional Genomics Consortium's (NBFGC) expressed sequence tag (EST) collection was established in 2001 to develop resources for functional genomics research. The NBFGC EST...
journal_title:Physiological genomics
pub_type: 杂志文章
doi:10.1152/physiolgenomics.00094.2003
更新日期:2003-10-17 00:00:00
abstract::Little is known regarding the graft response to transplantation injury. This study investigates the posttransplantation response of genes that are constitutively expressed in the heart. Constitutive heart and lymph node tissue-restricted gene expression was first analyzed with DNA microarrays. To demonstrate changes f...
journal_title:Physiological genomics
pub_type: 杂志文章
doi:10.1152/physiolgenomics.00139.2002
更新日期:2003-09-29 00:00:00
abstract::Epigenetic differences between male and female bovine blastocysts provide a plausible link between physiological and gene transcription differences observed between male and female embryos. The aim of this study was to examine sex-related epigenetic differences in bovine blastocysts produced in vitro. Oocytes were mat...
journal_title:Physiological genomics
pub_type: 杂志文章
doi:10.1152/physiolgenomics.00234.2007
更新日期:2008-01-17 00:00:00
abstract::Mechanical ventilation is a life-saving intervention in patients with respiratory failure. However, human and animal studies have demonstrated that mechanical ventilation using large tidal volumes (>or=12 ml/kg) induces a potent inflammatory response and can cause acute lung injury. We hypothesized that mechanical ven...
journal_title:Physiological genomics
pub_type: 杂志文章
doi:10.1152/physiolgenomics.00027.2009
更新日期:2009-05-13 00:00:00
abstract::Despite an abundance of evidence to the contrary from animal studies, large clinical trials on humans have shown that estrogen administered to postmenopausal women increases the risk of cardiovascular disease. However, timing may be everything, as estrogen is often administered immediately after ovariectomy (Ovx) in a...
journal_title:Physiological genomics
pub_type: 杂志文章
doi:10.1152/physiolgenomics.00228.2010
更新日期:2011-09-22 00:00:00
abstract::Aside from abnormal angiogenesis, dual endothelin-1/VEGF signal peptide-activated receptor deficiency (DEspR(-/-)) results in aberrant neuroepithelium and neural tube differentiation, thus elucidating DEspR's role in neurogenesis. With the emerging importance of neurogenesis in adulthood, we tested the hypothesis that...
journal_title:Physiological genomics
pub_type: 杂志文章
doi:10.1152/physiolgenomics.00044.2008
更新日期:2008-11-12 00:00:00
abstract::Leptin is known as a cytokine mostly produced by fat cells and implicated in regulation of energy metabolism and food intake but has also been shown to be involved in many physiological mechanisms such as tissue metabolism and cell differentiation and proliferation. In particular, leptin influences the development of ...
journal_title:Physiological genomics
pub_type: 杂志文章
doi:10.1152/physiolgenomics.00020.2013
更新日期:2013-08-01 00:00:00
abstract::Cardiac microvascular endothelial cells (CMVECs) are the most numerous cells in the myocardium and orchestrate cardiogenesis during development, regulate adult cardiac function, and modulate pathophysiology of heart failure. It has been shown that the transcriptome of CMVECs differs from other endothelial cell types, ...
journal_title:Physiological genomics
pub_type: 杂志文章
doi:10.1152/physiolgenomics.00002.2019
更新日期:2019-06-01 00:00:00
abstract::Aortic banding in the rat has become a popular method to induce left ventricular (LV) hypertrophy and heart failure. However, because of often extensive intrathoracic adhesions and inflammatory cell infiltrates resulting from the traditional surgical approach, an uncomplicated second thoracic incision for genetic mani...
journal_title:Physiological genomics
pub_type: 杂志文章
doi:10.1152/physiolgenomics.00035.2001
更新日期:2002-01-01 00:00:00
abstract::In recent years, it has become evident that the adult mammalian CNS contains a population of neural stem cells (NSCs) described as immature, undifferentiated, multipotent cells, that may be called upon for repair in neurodegenerative and demyelinating diseases. NSCs may give rise to oligodendrocyte progenitor cells (O...
journal_title:Physiological genomics
pub_type: 杂志文章,评审
doi:10.1152/physiolgenomics.00021.2002
更新日期:2003-08-15 00:00:00
abstract::Nicotinic acetylcholine receptors (nAChR) are assembled from a pool of nine alpha-subunits and three beta-subunits into functional pentamers in peripheral autonomic neurons. The contribution of different subunits to native, physiologically important nAChR for synaptic transmission in autonomic ganglia is unclear. Here...
journal_title:Physiological genomics
pub_type: 杂志文章
doi:10.1152/physiolgenomics.00085.2004
更新日期:2005-06-16 00:00:00
abstract::Adeno-associated virus (AAV) vectors might offer solutions for restenosis and angiogenesis by transducing nondividing cells and providing long-term gene expression. We investigated the feasibility of vascular cell transduction by AAV vectors in an in vivo rabbit carotid artery model. Time course of gene expression, in...
journal_title:Physiological genomics
pub_type: 杂志文章
doi:10.1152/physiolgenomics.2000.2.3.117
更新日期:2000-04-27 00:00:00
abstract::The purpose of this study was to identify novel transcriptional events occurring in the aortic wall before angiogenesis. We used a defined tissue culture system that takes advantage of the capacity of rat aortic rings to generate neovessels ex vivo in response to angiogenic factor stimulation. Total RNA isolated from ...
journal_title:Physiological genomics
pub_type: 杂志文章
doi:10.1152/physiolgenomics.00048.2006
更新日期:2006-10-03 00:00:00
abstract::Several critical cell functions are influenced not only by internal cellular machinery but also by external mechanical and biochemical cues from the surrounding microenvironment. Slight changes to the microenvironment can result in dramatic changes to the cell's phenotype; for example, a change in the nutrients or pH ...
journal_title:Physiological genomics
pub_type: 杂志文章,评审
doi:10.1152/physiolgenomics.00170.2013
更新日期:2014-05-01 00:00:00
abstract::Dahl salt-sensitive SS and consomic, salt-resistant SS-13(BN)/Mcw rats possess a highly similar genetic background but exhibit substantial differences in blood pressure salt sensitivity. We used cDNA microarrays to examine sequential changes of mRNA expression of approximately 2,000 currently known rat genes in the re...
journal_title:Physiological genomics
pub_type: 杂志文章
doi:10.1152/physiolgenomics.00089.2002
更新日期:2003-02-06 00:00:00
abstract::In mice, dystrophic cardiovascular calcification (DCC) is controlled by a major locus on proximal mouse chromosome 7 named Dyscalc1. Here we present a strategy that combines in silico analysis, expression analysis, and extensive sequencing for ultrafine mapping of the Dyscalc1 locus. We subjected 15 laboratory mouse s...
journal_title:Physiological genomics
pub_type: 杂志文章
doi:10.1152/physiolgenomics.00133.2006
更新日期:2007-01-17 00:00:00
abstract::Carotid atherosclerosis is the primary cause of ischemic stroke. To identify genetic factors contributing to carotid atherosclerosis, we performed quantitative trait locus (QTL) analysis using female mice derived from an intercross between C57BL/6J (B6) and BALB/cJ (BALB) apolipoprotein E (Apoe(-/-)) mice. We started ...
journal_title:Physiological genomics
pub_type: 杂志文章
doi:10.1152/physiolgenomics.00099.2012
更新日期:2013-04-16 00:00:00
abstract::Although the genetics of rare, monogenic, forms of human hypertension are fairly well defined, the genetics of the common polygenic form of human essential hypertension is only emerging. With the ability to control environmental variables, animal models have provided valuable tools with which to study blood pressure (...
journal_title:Physiological genomics
pub_type: 杂志文章
doi:10.1152/physiolgenomics.00027.2003
更新日期:2003-11-11 00:00:00