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Lookup NU author(s): Dr Ling Juan Wu,
Dr Richard Daniel
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND).
© 2020Objective: Arsenic trioxide (ATO or As2O3) has beneficial effects on suppressing neointimal hyperplasia and restenosis, but the mechanism is still unclear. The goal of this study is to further understand the mechanism of ATO's inhibitory effect on vascular smooth muscle cells (VSMCs). Methods and results: Through in vitro cell culture and in vivo stent implanting into the carotid arteries of rabbit, a synthetic-to-contractile phenotypic transition was induced and the proliferation of VSMCs was inhibited by ATO. F-actin filaments were clustered and the elasticity modulus was increased within the phenotypic modulation of VSMCs induced by ATO in vitro. Meanwhile, Yes-associated protein (YAP) nuclear translocation was inhibited by ATO both in vivo and in vitro. It was found that ROCK inhibitor or YAP inactivator could partially mask the phenotype modulation of ATO on VSMCs. Conclusions: The interaction of YAP with the ROCK pathway through ATO seems to mediate the contractile phenotype of VSMCs. This provides an indication of the clinical therapeutic mechanism for the beneficial bioactive effect of ATO-drug eluting stent (AES) on in-stent restenosis (ISR).
Author(s): Zhao Y, Zang G, Yin T, Ma X, Zhou L, Wu L, Daniel R, Wang Y, Qiu J, Wang G
Publication type: Article
Publication status: Published
Journal: Bioactive Materials
Print publication date: 01/02/2021
Online publication date: 04/09/2020
Acceptance date: 23/08/2020
Date deposited: 03/12/2020
ISSN (electronic): 2452-199X
Publisher: KeAi Communications Co.
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