The levels of HDAC1 and thioredoxin1 are related to the death of mesothelioma cells by suberoylanilide hydroxamic acid.

Abstract:

:Mesothelioma is an aggressive tumor which is mainly derived from the pleura of lung. In the present study, we evaluated the anticancer effect of suberoylanilide hydroxamic acid (SAHA), a histone deacetylase (HDAC) inhibitor on human mesothelioma cells in relation to the levels of HDAC1, reactive oxygen species (ROS) and thioredoxin (Trx). While 1 µM SAHA inhibited cell growth in Phi and ROB cells at 24 h, it did not affect the growth in ADA and Mill cells. Notably, the level of HDAC1 was relatively overexpressed among Phi, REN and ROB cells. SAHA induced necrosis and apoptosis, which was accompanied by the cleavages of PARP and caspase-3 in Phi cells. This agent also increased the loss of mitochondrial membrane potential (MMP, ΔΨm) in Phi cells. All the tested caspase inhibitors attenuated apoptosis in SAHA-treated Phi cells whereas HDAC1 siRNA enhanced the apoptotic cell death. SAHA increased intracellular ROS levels including O2•- in Phi cells. N-acetyl cysteine (NAC) and vitamin C (Vit.C) significantly reduced the growth inhibition and death of Phi cells caused by SAHA. This drug decreased the mRNA and protein levels of Trx1 in Phi and ROB cells. Furthermore, Trx1 siRNA increased cell death and O2•- level in SAHA-treated Phi cells. In conclusion, SAHA selectively inhibited the growth of Phi and ROB mesothelioma cells, which showed the higher basal level of HDAC1. SAHA-induced Phi cell death was related to oxidative stress and Trx1 levels.

journal_name

Int J Oncol

authors

You BR,Park WH

doi

10.3892/ijo.2016.3402

subject

Has Abstract

pub_date

2016-05-01 00:00:00

pages

2197-204

issue

5

eissn

1019-6439

issn

1791-2423

journal_volume

48

pub_type

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