ArticleBMC molecular and cell biology2024
mTOR signaling pathway regulation HIF-1 α effects on LPS induced intestinal mucosal epithelial model damage.
Article in BMC molecular and cell biology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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5 citing papers in PubMed, 3 citations in OpenAlex.
- Protective Role of Erzhi Pills in HBiochemical genetics · 2026Article
- Lipopolysaccharide-induced Neuroimmune Alteration and Memory Decline in Aging Mice: The Role of Augmented Cellular Senescence.Neurotoxicity research · 2026Article
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- Review
- Large Chengqi Decoction Improves Sepsis-Related Intestinal Damage by Inhibiting Inflammatory Response Through the HMGB1-TLR4 Signaling Pathway.Journal of inflammation research · 2025Article
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7 authors at 4 institutions in 1 country.
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Abstract
backgroundSepsis-induced small-intestinal injury is associated with increased morbidity and mortality. Our previous study and other papers have shown that HIF-1α has a protective effect on intestinal mucosal injury in septic rats. The purpose of this study is to further verify the protective effect of HIF-1α on intestinal mucosa and its molecular mechanism in vitro experiments.
methodsCaco-2 cells were selected and experiment was divided into 2 parts. Part I: HIF-1α activator and inhibitor were used to treat lipopolysacchrides (LPS)-stimulated Caco-2 cells respectively, to explore the effect of HIF-1α on LPS induced Caco-2 cell epithelial model; Part II: mTOR activator or inhibitor combined with or without HIF-1α activator, inhibitor to treat LPS-stimulated Caco-2 cells respectively, and then the molecular mechanism of HIF-1α reducing LPS induced Caco-2 cell epithelial model damage was detected.
resultsThe results showed that HIF-1α activator decreased the permeability and up regulated tight junction (TJ) expression, while HIF-1α inhibitor had the opposite effect with the HIF-1α activator. mTOR activation increased, while mTOR inhibition decreased HIF-1α protein and expression of its downstream target molecules, which can be attenuated by HIF-1α activator or inhibitor.
conclusionThis study once again confirmed that HIF-1α alleviates LPS-induced mucosal epithelial model damage through P70S6K signalling pathway. It is of great value to explore whether HIF-2α plays crucial roles in the regulation of mucosal epithelial model functions in the future.
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