Epigenetic regulation of myofibroblast differentiation and extracellular matrix production in nasal polyp-derived fibroblasts

被引：68
作者：
Cho, J. -S. [1 ]
Moon, Y. -M. [1 ]
Park, I. -H. [2 ]
Um, J. -Y. [1 ]
Moon, J. -H. [1 ]
Park, S. -J. [1 ]
Lee, S. H. [2 ]
Kang, H. J. [2 ]
Lee, H. -M. [1 ,2 ,3 ]
机构：
[1] Korea Univ, Coll Med, Brain Korea Project Biomed Sci 21, Seoul 152703, South Korea
[2] Korea Univ, Coll Med, Dept Otorhinolaryngol Head & Neck Surg, Seoul 152703, South Korea
[3] Korea Univ, Guro Hosp, Inst Med Devices Clin Trial Ctr, Seoul 152703, South Korea
来源：
CLINICAL AND EXPERIMENTAL ALLERGY | 2012年 / 42卷 / 06期
基金：
新加坡国家研究基金会;
关键词：
extracellular matrix; histone deacetylase; myofibroblasts; nasal polyp-derived fibroblasts; nasal polyposis; TGF-beta; 1; trichostatin A; GROWTH-FACTOR-BETA; HISTONE DEACETYLASE INHIBITOR; TRICHOSTATIN-A; SKIN FIBROBLASTS; GENE-EXPRESSION; PROLIFERATION; ACCUMULATION; DISEASES; ASTHMA; FAMILY;
D O I：
10.1111/j.1365-2222.2011.03931.x
中图分类号：
R392 [医学免疫学];
学科分类号：
100102 ;
摘要：
Background Nasal polyposis is a multi-factorial disease associated with chronic inflammatory condition of the paranasal sinuses. Myofibroblast differentiation and extracellular matrix (ECM) accumulation are involved in the pathogenesis of nasal polyposis. Objective The aim of this study was to study the effect of trichostatin A (TSA), a histone deacetylase (HDAC) inhibitor, on transforming growth factor (TGF)-beta 1-induced myofibroblast differentiation and ECM accumulation in nasal polyp-derived fibroblasts (NPDFs). Methods Nasal polyp-derived fibroblasts were isolated from nasal polyps of patients who have chronic rhinosinusitis with nasal polyp. TSA was treated in TGF-beta 1-induced NPDFs. Expression levels of HDAC2, alpha-smooth muscle actin (SMA), TGF-beta 1, collagen type I, acetylated Histone H3, acetylated Histone H4, phosphorylated Smad2/3 and Smad7 were determined by RT-PCR, western blot and/or immunofluorescent staining. The total collagen amount production was analysed by Sircol soluble collagen assay and contractile activity was measured by collagen gel contraction assay. HDAC2 inhibition by TSA or HDAC2 silencing was established by RT-PCR and western blot. The epigenetic effect on alpha-SMA gene inactivation was examined by chromatin immunoprecipitation assay. Proliferation was determined by Ki67-positive cell staining and cytotoxicity was assessed by 3-(4,5-dimethylthiazol-2yl)-2,5-diphenyl-2H-tetrazolium bromide (MTT) assay. Results The expression levels of HDAC2, alpha-SMA and TGF-beta 1 were increased in nasal polyp tissues compared to normal inferior turbinate tissues. TSA and HDAC2 silencing inhibited expression levels alpha-SMA, collagen and HDAC2. TSA induced hyperacetylation of histone and suppressed opening of alpha-SMA gene promoter in TGF-beta 1-induced NPDFs. TSA inhibited TGF-beta 1-induced Smad 2/3 and rescued TGF-beta 1-suppressed Smad7 signalling pathway. Finally, TSA blocked proliferation in TGF-beta 1-induced NPDFs and has no cytotoxic effect in NPDFs. Conclusions and Clinical Relevance These results suggest that HDAC inhibition is associated with myofibroblast differentiation and extracelluar matrix accumulation in nasal polyposis. TSA may be useful as an inhibitor of nasal polyp growth, and thus has potential to be used as a novel treatment option for nasal polyposis.
引用
收藏
页码：872 / 882
页数：11
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