Apoptotic DNA fragmentation is detected by a semi-quantitative ligation-mediated PCR of blunt DNA ends

Apoptotic DNA fragmentation is detected by a semi-quantitative ligation-mediated PCR of blunt DNA ends
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通过半定量连接介导的 DNA 平末端 PCR 检测凋亡 DNA 片段

DOI:
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发表时间:
1997
影响因子:
12.4
通讯作者:
J. Chun
J. Chun
中科院分区:
生物学1区
文献类型:
--
作者:
K. Staley;A. Blaschke;J. Chun

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细胞凋亡是一种程序性细胞死亡(PCD)的形式,其特征是形态学变化和典型的DNA降解,被描述为核小体“阶梯”。然而,核小体梯只有在脊椎动物组织中当大量细胞同步死亡时才被清楚地证明。它们的缺失可以通过生理条件下的异步死亡或通过不同的分子机制来解释。在这项研究中,通过连接介导的聚合酶链反应(LMPCR)显示核小体梯,该反应扩增具有钝端、5′磷酸化末端的DNA片段。对来自不同生物体的大量组织进行了检查,结果表明核小体梯(a)伴随着哺乳动物组织中的生理性细胞死亡,在此之前未检测到DNA断裂;(B)在无脊椎动物细胞死亡期间产生;(c)总是通过产生钝的5′磷酸化双链断裂而产生。这些结果表明,PCD在多细胞生物始终涉及凋亡机制和核酸内切酶活性是进化保守的。
Apoptosis is a form of programmed cell death (PCD) characterized by morphological changes and stereotypical DNA degradation described as a nucleosomal ‘ladder’. However, nucleosomal ladders have only been clearly demonstrated in vertebrate tissues when large numbers of cells die in synchrony. Their absence may be explained by asynchronous death under physiological conditions, or by distinct molecular mechanisms. In this study, nucleosomal ladders were revealed by a ligation-mediated polymerase chain reaction (LMPCR), that amplifies DNA fragments with blunt, 5′ phosphorylated ends. Numerous tissues from different organisms were examined which demonstrated that nucleosomal ladders (a) accompany physiological cell death in mammalian tissues where previously DNA fragmentation has not been detected; (b) are produced during invertebrate cell death; (c) are invariably generated via the production of blunt, 5′ phosphorylated double strand breaks. These results suggest that PCD in multicellular organisms consistently involves apoptotic mechanisms and that the endonuclease activity is evolutionarily conserved.
DOI: 10.1006/abbi.1993.1060
发表时间: 1993-01-01
影响因子: 3.9
作者:
BARRY, MA;EASTMAN, A
通讯作者: EASTMAN, A
DOI: 10.1016/0012-1606(83)90257-9
发表时间: 1983-09
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期刊: RSC ADVANCES
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通讯作者: Lobato, Justo
DOI: 10.1126/science.2814500
发表时间: 1989-11-10
期刊: SCIENCE
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视黄酸诱导的肢体减少缺陷:程序性细胞死亡区域的扰动作为发病机制。
DOI: 10.1002/tera.1420400210
发表时间: 1989
期刊: Teratology
影响因子: --
作者:
Alles,AJ;Sulik,KK
通讯作者: Sulik,KK