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Mycobacterium tuberculosis (Mtb) survives host defences by adapting to host conditions, including acid stress, during infection. A critical survival strategy involves pH homeostasis, mediated by complex signalling systems that regulate metabolic reprogramming and stress responses. While ...

2026-09-03 | MTBLS15171 | MetaboLights
The purpose of this study was to examine how Mtb integrates acidic pH and available carbon sources as environmental cues to regulate its metabolism and growth rate. RNA-seq transcriptional profiling of M. tuberculosis growing at acidic or neutral pH, in pyruvate or glycerol, was examined. These stu...
ORGANISM(S): Mycobacterium tuberculosis 
OGR1 is a pH-sensing G-protein coupled receptor involved in intestinal homeostasis and inflammation Proton activation of OGR1 increases barrier function in Caco2 cells Microarray profiling was performed on OGR1 stable overexpressing Caco-2 cells during acidic pH shift
ORGANISM(S): Homo sapiens 
Identification of acidic extracellular pH-modulated genes
Acidic tissue microenvironment is commonly found in a variety of pathophysiological conditions. GPR4 is a proton-sensing G protein-coupled receptor that is fully activated by acidic extracellular pH but has lesser activity at the physiological pH 7.4 and minimal activity at more alkaline pH. To dete...
ORGANISM(S): Homo sapiens 
Differences in global levels of histone acetylation occur in normal and cancer cells, although the reason cells regulate these levels has remained unclear. Here we demonstrate a role for histone acetylation in regulating intracellular pH (pHi). As pHi decreases, histones are globally deacetylated by...
ORGANISM(S): Homo sapiens 
The paper describes a model of pH control in tumor. Created by COPASI 4.26 (Build 213) This model is described in the article: Regulation of tumour intracellular pH: A mathematical model examining the interplay between H and lactate Maymona Al-Husari, Steven D. Webb Journal of Theoretical Biolog...
2024-09-02 | BIOMD0000000805 | BioModels
Metals at high concentrations can exert toxic effects on microorganisms. It has been widely reported that lowering environmental pH reduces effects of cadmium toxicity in bacteria. Understanding the effects of pH-mediated cadmium toxicity on bacteria would be useful for minimizing cadmium toxicity...
ORGANISM(S): Escherichia coli str. K-12 substr. MG1655 
OGR1 is a pH sensing G protein-coupled receptor involved in intestinal homeostasis and inflammation. Up-regulation of genes, mediated by OGR1, in response to extracellular acidification were enriched for inflammation, immune response, actin cytoskeleton and cell adhesion pathways. Microarray profili...
ORGANISM(S): Mus musculus 
To investigate the genes that are modulated by acidic extracellular pH, we treated the mouse B16-BL6 cells with acidic medium and then analyzed them comprehensively by cDNA microarray.
ORGANISM(S): Mus musculus 
2024-09-09 | GSE276124 | GEO
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