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Lactiplantibacillus plantarum K8 lysates regulate hypoxia-induced gene expression
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Lactiplantibacillus plantarum K8 lysates regulate hypoxia-induced gene expression
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Journal Article
Lactiplantibacillus plantarum K8 lysates regulate hypoxia-induced gene expression
2024
Overview
Hypoxic responses have been implicated in critical pathologies, including inflammation, immunity, and tumorigenesis. Recently, efforts to identify effective natural remedies and health supplements are increasing. Previous studies have reported that the cell lysates and the cell wall-bound lipoteichoic acids of
Lactiplantibacillus plantarum K8
(K8) exert anti-inflammatory and immunomodulative effects. However, the effect of K8 on cellular hypoxic responses remains unknown. In this study, we found that K8 lysates had a potent suppressive effect on gene expression under hypoxia. K8 lysates markedly downregulated hypoxia-induced HIF1α accumulation in the human bone marrow and lung cancer cell lines, SH-SY5Y and H460. Consequently, the transcription of known HIF1α target genes, such as
p21
,
GLUT1
, and
ALDOC
, was notably suppressed in the K8 lysate supplement and purified lipoteichoic acids of K8, upon hypoxic induction. Intriguingly, K8 lysates decreased the expression of PHD2 and VHL proteins, which are responsible for HIF1α destabilization under normoxic conditions, suggesting that K8 may regulate HIF1α stability in a non-canonical pathway. Overall, our results suggest that K8 lysates desensitize the cells to hypoxic stresses and suppress HIF1α-mediated hypoxic gene activation.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
