Tetrandrine induces apoptosis in human neuroblastoma through regulating the Hippo/YAP signaling pathway

Area of Science:

• Oncology
• Molecular Biology
• Pharmacology

Background:

• Tetrandrine (TET), a natural alkaloid, exhibits anti-cancer properties against various tumors.
• The precise mechanism of TET's anti-cancer activity, particularly in neuroblastoma (NB), is not fully understood.

Purpose of the Study:

• To investigate the anti-cancer effects of TET on neuroblastoma (NB) cells.
• To elucidate the molecular mechanisms underlying TET's efficacy, focusing on apoptosis and the Hippo/YAP pathway.

Main Methods:

• In vitro and in vivo experiments were conducted using neuroblastoma models.
• Analysis included cell proliferation assays, apoptosis detection, and Western blotting to assess protein expression (Bcl-2, YAP).
• YAP overexpression was used to evaluate its role in TET's mechanism.

Main Results:

• TET significantly inhibited NB cell proliferation and induced apoptosis both in vitro and in vivo.
• TET treatment led to decreased expression of the anti-apoptotic protein Bcl-2.
• The Hippo/YAP pathway was identified as a key regulator in the down-regulation of Bcl-2 by TET.
• Overexpression of YAP partially reversed the anti-proliferative and pro-apoptotic effects of TET.

Conclusions:

• Tetrandrine demonstrates significant anti-cancer potential against neuroblastoma.
• The anti-tumor activity of TET is mediated through the inhibition of Bcl-2 expression via the Hippo/YAP pathway.
• Targeting the Hippo/YAP pathway presents a promising therapeutic avenue for neuroblastoma treatment.