Title : Dual role of inositol-requiring enzyme 1α (IRE-1α) in Cd-induced apoptosis in human renal tubular epithelial cells: Endoplasmic reticulum stress and STAT3 signaling activation.

Pub. Date : 2021 May 30

PMID : 33813002






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1 Dual role of inositol-requiring enzyme 1alpha (IRE-1alpha) in Cd-induced apoptosis in human renal tubular epithelial cells: endoplasmic reticulum stress and STAT3 signaling activation. Cadmium endoplasmic reticulum to nucleus signaling 1 Homo sapiens
2 This study aimed to investigate whether the two enzymatic activities of IRE-1alpha have different effects in its regulation of Cd-induced apoptosis. Cadmium endoplasmic reticulum to nucleus signaling 1 Homo sapiens
3 Interestingly, inhibition of IRE-1alpha kinase activity by KIRA6 was more protective against Cd-induced apoptosis than inhibition of its RNase activity by STF-083010. Cadmium endoplasmic reticulum to nucleus signaling 1 Homo sapiens
4 Mechanistically, Cd promoted the binding of IRE-1alpha with signal transducer and activator of transcription-3 (STAT3) leading to elevated phosphorylation of STAT3 at Ser727 and thus inactivation of STAT3 signaling, which resulted in aggravation of Cd-induced apoptosis in HK-2 cells. Cadmium endoplasmic reticulum to nucleus signaling 1 Homo sapiens
5 Mechanistically, Cd promoted the binding of IRE-1alpha with signal transducer and activator of transcription-3 (STAT3) leading to elevated phosphorylation of STAT3 at Ser727 and thus inactivation of STAT3 signaling, which resulted in aggravation of Cd-induced apoptosis in HK-2 cells. Cadmium endoplasmic reticulum to nucleus signaling 1 Homo sapiens
6 Collectively, our findings indicate that IRE-1alpha coordinate ER stress and STAT3 signaling in mediating Cd-induced renal toxicity, suggesting that targeting IRE-1alpha might be a potential therapeutic approach for Cd-induced renal dysfunction and disease. Cadmium endoplasmic reticulum to nucleus signaling 1 Homo sapiens
7 Collectively, our findings indicate that IRE-1alpha coordinate ER stress and STAT3 signaling in mediating Cd-induced renal toxicity, suggesting that targeting IRE-1alpha might be a potential therapeutic approach for Cd-induced renal dysfunction and disease. Cadmium endoplasmic reticulum to nucleus signaling 1 Homo sapiens
8 Collectively, our findings indicate that IRE-1alpha coordinate ER stress and STAT3 signaling in mediating Cd-induced renal toxicity, suggesting that targeting IRE-1alpha might be a potential therapeutic approach for Cd-induced renal dysfunction and disease. Cadmium endoplasmic reticulum to nucleus signaling 1 Homo sapiens
9 Collectively, our findings indicate that IRE-1alpha coordinate ER stress and STAT3 signaling in mediating Cd-induced renal toxicity, suggesting that targeting IRE-1alpha might be a potential therapeutic approach for Cd-induced renal dysfunction and disease. Cadmium endoplasmic reticulum to nucleus signaling 1 Homo sapiens