Title : Curcumin prevents As3+-induced carcinogenesis through regulation of GSK3β/Nrf2.

Pub. Date : 2021 Nov 10

PMID : 34758851






15 Functional Relationships(s)
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1 Curcumin prevents As3+-induced carcinogenesis through regulation of GSK3beta/Nrf2. Curcumin NFE2 like bZIP transcription factor 2 Homo sapiens
2 Co-immunoprecipitation (Co-IP) results indicated that curcumin is a potent Keap1 Kelch domain-dependent Nrf2 activator that stabilizes Nrf2 by hindering its ubiquitination. Curcumin NFE2 like bZIP transcription factor 2 Homo sapiens
3 Co-immunoprecipitation (Co-IP) results indicated that curcumin is a potent Keap1 Kelch domain-dependent Nrf2 activator that stabilizes Nrf2 by hindering its ubiquitination. Curcumin NFE2 like bZIP transcription factor 2 Homo sapiens
4 The increased activation of Nrf2 and its target antioxidant genes by curcumin could significantly decrease As3+-generated ROS. Curcumin NFE2 like bZIP transcription factor 2 Homo sapiens
5 Knockdown of Nrf2 abolished curcumin-induced autophagy and downregulated ROS. Curcumin NFE2 like bZIP transcription factor 2 Homo sapiens
6 These results demonstrated that curcumin prevents As3+-induced cell transformation by inducing autophagy via the activation of the Nrf2 signaling pathway in BEAS-2B cells. Curcumin NFE2 like bZIP transcription factor 2 Homo sapiens
7 Overexpression of Nrf2 in AsT demonstrated that curcumin increased ROS levels and induced cell apoptosis via the downregulation of Nrf2. Curcumin NFE2 like bZIP transcription factor 2 Homo sapiens
8 Overexpression of Nrf2 in AsT demonstrated that curcumin increased ROS levels and induced cell apoptosis via the downregulation of Nrf2. Curcumin NFE2 like bZIP transcription factor 2 Homo sapiens
9 Further studies showed that curcumin decreased the Nrf2 level in AsT by activating GSK-3beta to inhibit the activation of PI3K/AKT. Curcumin NFE2 like bZIP transcription factor 2 Homo sapiens
10 Co-IP assay results showed that curcumin promoted the interaction of Nrf2 with the GSK-3beta/beta-TrCP axis and ubiquitin. Curcumin NFE2 like bZIP transcription factor 2 Homo sapiens
11 Moreover, the inhibition of GSK-3beta reversed Nrf2 expression in curcumin-treated AsT, indicating that the decrease in Nrf2 is due to activation of the GSK-3beta/beta-TrCP ubiquitination pathway. Curcumin NFE2 like bZIP transcription factor 2 Homo sapiens
12 Moreover, the inhibition of GSK-3beta reversed Nrf2 expression in curcumin-treated AsT, indicating that the decrease in Nrf2 is due to activation of the GSK-3beta/beta-TrCP ubiquitination pathway. Curcumin NFE2 like bZIP transcription factor 2 Homo sapiens
13 Furthermore, in vitro and in vivo results showed that curcumin induced cell apoptosis, and had anti-angiogenesis and anti-tumorigenesis effects as a result of activating the GSK-3beta/beta-TrCP ubiquitination pathway and subsequent decrease in Nrf2. Curcumin NFE2 like bZIP transcription factor 2 Homo sapiens
14 CONCLUSIONS: Taken together, in the first stage, curcumin activated Nrf2, decreased ROS, and induced autophagy in normal cells to prevent As3+-induced cell transformation. Curcumin NFE2 like bZIP transcription factor 2 Homo sapiens
15 In the second stage, curcumin promoted ROS and apoptosis and inhibited angiogenesis via inhibition of constitutive expression of Nrf2 in AsT to prevent tumorigenesis. Curcumin NFE2 like bZIP transcription factor 2 Homo sapiens