[1]丛征,郭傲,郭阳.组蛋白去乙酰酶阻滞剂的放射增敏作用[J].国际放射医学核医学杂志,2013,37(2):112-115.[doi:10.3760/cma.j.issn.1673-4114.2013.02.013]
　CONG Zheng,GUO Ao,GUO Yang.Enhancement of radiation response by his tone deacetylase inhibitor[J].International Journal of Radiation Medicine and Nuclear Medicine,2013,37(2):112-115.[doi:10.3760/cma.j.issn.1673-4114.2013.02.013]
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组蛋白去乙酰酶阻滞剂的放射增敏作用(/HTML)
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《国际放射医学核医学杂志》[ISSN:1673-4114/CN:12-1381/R]

卷:
37
期数:
2013年第2期
页码:
112-115
栏目:
综述
出版日期:
2013-03-25

文章信息/Info

Title:
Enhancement of radiation response by his tone deacetylase inhibitor
作者:
丛征1;  郭傲2;  郭阳2
1. 天津市环湖医院放射治疗科, 天津, 300060;
2. 中国药科大学2009级生命科学与技术人才培养基地班, 南京, 211198
Author(s):
CONG Zheng1;  GUO Ao2;  GUO Yang2
Department of Radiotherapy, Tianjin Huanhu Hospital, Tianjin 300060, China
关键词:
辐射耐受性; 组蛋白去乙酰酶阻滞剂
Keywords:
Radiation tolerance; Histone deacetylase inhibitors
DOI:
10.3760/cma.j.issn.1673-4114.2013.02.013
摘要:
放射治疗是肿瘤的重要治疗手段之一,辐射可以导致细胞DNA双链断裂。细胞主要通过同源重组修复和非同源末端连接修复方式修复DNA双链断裂。随着对双链DNA损伤修复机制认识的深化,组蛋白去乙酰酶(HDAC)阻滞剂成为提高放射敏感性的一种新策略。HDAC可分为4类。HDAC阻滞剂可非特异性地或特异性地阻滞这4类HDAC,使组蛋白乙酰化水平提高,染色体解螺旋,核小体结构改变。一方面使DNA更易受到辐射的影响;另一方面通过降低E2F1转录因子活性抑制损伤修复蛋白Ku80、Rad51等的表达,使其不能募集DNA损伤修复蛋白,且不能形成相应的蛋白复合物,使同源重组修复和非同源末端连接修复作用延缓,在伴有或不伴有肿瘤细胞凋亡增加的情况下,提高放射敏感性。现已有一些临床试验在进行中,并取得了初步的结果。
Abstract:
Radiotherapy is an essential part of cancer treatment,which leads to DNA double strains break.Homogeneous recombination and heterogeneous end conjunction are the main ways which can repair DNA double strains break in the cells.It is a novel strategy,which as recognize as the mechanism of damage to DNA strains,that radiosensitivity is enhanced by histone deacetylase (HDAC) inhibitor.HDAC inhibitor is able to antagonize specifically or nonspecifically HDAC whom is forming as four various sorts,as a consequence enhancing level of histone deacetylase,decoilization of chromosome and alternation on molecular structure of nucleolus.Firstly DNA is simply influenced by radioactivity due to HDAC inhibitor,and then HDAC inhibitor effects on decline activity of E2F1 transcript factors,which cause directly expressional inhibition on the repair proteins including Ku80,Rad51,thus the molecules are unable to recruited and polymerized into correspond protein compound,as a result of HDAC inhibitor the function of homogeneous recombination and heterogeneous end conjunction becomes minimized.As the circumstances are shown involving augment or non-augment of apoptosis among cancer cells,HDAC inhibitor enhance the radiosensitivity eventually,which has been applicated into clinical trials and obtain primary achievement.

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备注/Memo

备注/Memo:
收稿日期:2012-09-25。
通讯作者:郭阳,Email:yangguo622003@yahoo.com.cn
更新日期/Last Update: 1900-01-01