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前环藻细胞核骨架及其真实性的研究
方志林1; 吴传芬2; 李靖炎2
刊名动物学研究
1993
卷号14期号:1页码:80-85
关键词典型涡鞭毛虫 前环藻 细胞核骨架 选择性抽提 DGD包埋-切片去包埋技术
其他题名The Study on The Nuclear Matrix and Its Reality of Amphidinium carterae
合作状况其它
中文摘要采用细胞成份的选择性抽提方法,结合常规电镜和DGD(Diethylene Glycol Distearate)包埋一去包电镜技术制备典型涡鞭毛虫前环或的细胞核骨架,结果表明其核内存在一个蛋白性质的纤维网状结构,并且通过核纤层与中等纤维发生联系形成一个贯穿核质的骨架体重,即使在未经任何提提处理的情况下,前环藻细胞的染色体之间仍然存在骨架结构,根据典型涡革命毛虫的特点及细胞核骨架的定义,可以肯定其中包含了核骨架部分,这一实验结果排除了核骨架是因抽提处理造成结构象的可能性,另外,在制备核骨架时,于选择性抽提液CSK液中加入1%巯基乙醇抑制二硫键的形成,结果同样观察到核内有一个致密的纤维网络结构,并且与选择性抽提制备的核骨架相似,这也说明核骨架结构并不是由于蛋白质分子间二硫键的交联而赞成的结构假象,以上结果都证明该核骨架是一个真实存在的结构。
英文摘要With DGD embedment sectioning and embedment-free technique,We found that nuclear matrix also could be demonstrated in the nucleus of typical dinoflagellate Amphidinium carterae after a series of selective extractions and Dnase treatment.The morphology of the nuclear matrix is similar to that of higher eukaryotic cells,and consisting a non-chromatin filamentous network and granular structures.However,it is noteworthy that,with DGD technique,even in the cells fixed directly without any prior extractions and treatments,a similar dense network of filaments could also be demonstrated in the nucleoplasma.It has long been known that,in typical dineflagellate nucleus,almost all of the DNA concentrate in the permanently condensed chromosomes.Therefore,at least most of the filaments are not chromatin fibrils,but nuclear matrix filaments.Besides,when the formation of sulfide links among protein molecules was protected by adding 1% mercaptoethol into the extraction buffer,the nuclear matrix also could be demonstrated.This fact rules out the possiblity that the nuclear matrix is an artifact produced by the formation of difulfide links among protein molecules.These facts above imply that the nuclear matrix in typical dineflagellate is a real physiological nuclear structure,rather than artifact produced during extractions and treatments.
收录类别其他
资助信息国家自然科学基金
语种中文
公开日期2010-08-13
内容类型期刊论文
源URL[http://159.226.149.42:8088/handle/152453/1477]  
专题昆明动物研究所_其他
作者单位1.重庆师范学院生物系;630047
2.中国科学院昆明动物研究所,昆明650223
推荐引用方式
GB/T 7714
方志林,吴传芬,李靖炎. 前环藻细胞核骨架及其真实性的研究[J]. 动物学研究,1993,14(1):80-85.
APA 方志林,吴传芬,&李靖炎.(1993).前环藻细胞核骨架及其真实性的研究.动物学研究,14(1),80-85.
MLA 方志林,et al."前环藻细胞核骨架及其真实性的研究".动物学研究 14.1(1993):80-85.
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