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Chronic acidosis-associated transcriptome changes in cancer cells

ABSTRACT: Chronic acidosis-associated transcriptome changes in cancer cells

PROVIDER: PRJNA476870 | ENA |

REPOSITORIES: ENA

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Chronic acidosis-associated transcriptome changes in cancer cells

Project description:The goal of this study was to examine the effects of chronic acidosis (pH 6.5) on the transcriptome of several cancer cell lines.

2019-12-20 | GSE116035 | GEO

Impact of chronic extracellular acidosis on gene expression in mammary and pancreatic cancer cell lines

Project description:The study aim was to determine whether the microenvironmental acidosis in solid tumors contributes to cancer aggressiveness via changes in gene expression. RNA seq was carried out in parallel to a large array of phenotypical analyses of proliferation, growth, and invasiveness.

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Lactic acidosis triggers starvation response with distinct metabolic profiles

Project description:[1] Lactic acidosis time course: MCF7 cells were exposed to lactic acidosis for different length of time. We used microarrays to examine the genomic programs of cells incubated under lactic acidosis for different length of time [2] Metabolic profiling: MCF7 cells were exposed to control condition, 25mM lactic acidosis, glucose deprivation (zero glucose) and hypoxia (1% oxygen level). [3] Mouse study: Lactic acidosis triggers starvation response with paradoxical induction of TXNIP through MondoA. Wild-type mouse embryo fibroblasts (MEFs) and TXNIP-null MEFs were exposed to Ctrl versus lactic acidosis conditions for 24hrs and the RNAs from cells were extracted with MiRVana kit (Ambion) and applied to Affymetrix 430A mouse chips We used microarrays to examine the genomic programs of cells incubated under different microenvironmental stresses. [1] Lactic acidosis time course: MCF7 cells were exposed to lactic acidosis for 1, 4, 12 and 24 hours. [2] Metabolic profiling: MCF7 cells were exposed to lactic acidosis, glucose deprivation and hypoxia for 4hours. [3] wild-type mouse embryo fibroblasts (MEFs) and TXNIP-null MEFs were exposed to Ctrl versus lactic acidosis conditions for 24hrs.

2010-09-27 | E-GEOD-19123 | biostudies-arrayexpress

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Project description:Human Mammalian Epithelial Cells (HMEC) were exposed to different environmental stresses, including hypoxia, lactic acidosis, the combination of hypoxia and lactic acidosis, lactosis , as well as acidosis. We used microarrays to examine the genomic programs of cells incubated under different microenvironments. Experiment Overall Design: HMEC cells were exposed to different environmental stresses and RNAs were extracted and put on Affymetrix microarrays. We gathered RNAs from cells grown in regular media (control), lactic acidosis, hypoxia, the combinatino of lactic acidosis and hypoxia, lactosis, as well as acidosis.

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Next Generation Sequencing of Acidosis Response in Intestinal Epithelial Cells

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Extracellular acidosis promotes colonization of lung metastases by mediating extracellular matrix remodeling and vasculogenic mimicry

Project description:Acidosis is a hallmark of the tumor microenvironment caused by the metabolic switch from glucose oxidative phosphorylation to glycolysis. It has been largely associated with tumor growth and progression, nevertheless, how acidosis promotes metastatic dissemination remains largely unknown. In this study, we established a long-term acidosis model using patient-derived lung cancer cells. By comparing xenograft inoculates at the cluster sizes of lung cancer circulating tumor cells, the acidosis cells display significantly higher incidence of secondary tumor establishment than their neutral pH counterparts. Transcriptomics analyses reveal a profound remodeling of the extracellular matrix in the acidosis cells, featuring the upregulation of ITGA4 and HAS3 genes, In clinical specimen, overexpression of both ITGA4 and HAS3 proteins are associated with primary tumors with metastatic ability, and their distribution is markedly accentuated around vascular mimicry structures in secondary tumors. We show that acidosis cells display higher ability of vascular mimicry in vitro, and are enriched in ABC transporter-dependent side population cells. Our data support that acidosis drives tumor metastatic colonization via enhanced extracellular matrix remodeling and vascular mimicry. Assessment on the prognostic value of tumor acidosis for metastasis and possible treatment directions are discussed.

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Lactic acidosis triggers starvation response with distinct metabolic profiles

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