ReferenceID 3585

Hispidulin Enhances TRAIL-Mediated Apoptosis via CaMKK/AMPK/USP51 Axis-Mediated Bim Stabilization

Cancers (Basel)

Hispidulin, a natural compound present in herbs, has anti-cancer effects. Here, we investigated whether hispidulin sensitizes human carcinoma cells to apoptosis induced by TRAIL. Sub-lethal dosages of TRAIL alone and hi

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Reference Id
3585
Evidence Id
20175
Core Evidence Id
20175
Source Reference Id
937
Herb2 Reference Id
HBREF001638
Subject Paper Key
HBIN024094_31817696
Pubmed Id
31817696
Doi
10.3390/cancers11121960
Paper Title
Hispidulin Enhances TRAIL-Mediated Apoptosis via CaMKK/AMPK/USP51 Axis-Mediated Bim Stabilization
Paper Abstract
Hispidulin, a natural compound present in herbs, has anti-cancer effects. Here, we investigated whether hispidulin sensitizes human carcinoma cells to apoptosis induced by TRAIL. Sub-lethal dosages of TRAIL alone and hispidulin alone does not increase apoptosis, but hispidulin increases sensitivity to TRAIL, resulting in induction of apoptosis in hispidulin plus TRAIL-treated cancer cells. In addition, combined treatment with hispidulin and TRAIL also reduced tumor growth and increased apoptosis in xenograft models. However, hispidulin did not alter cell viability in human renal normal mesangial cells and human skin fibroblast. Hispidulin markedly increased the BH3-only proteins Bim at the post-translational levels. Depletion of Bim with siRNA significantly blocked hispidulin plus TRAIL-induced apoptosis. Furthermore, we found that activation of AMPK by hispidulin has a crucial role in Bim proteins stability through up-regulation of USP51 expression. Our findings suggest that USP51-dependent stabilization of Bim by AMPK activation plays a critical role in hispidulin-mediated sensitization of cancer cells to apoptosis induced by TRAIL.
Journal
Cancers (Basel)
Publish Year
2019
Experiment Subject
xenograft models
Experiment Type
Animal Experiment
Phenotype Related
Cancer
Paper Title Cn
Paper Title En
Hispidulin Enhances TRAIL-Mediated Apoptosis via CaMKK/AMPK/USP51 Axis-Mediated Bim Stabilization
Bilingual Status
semi_complete