Preservation of large-scale chromatin structure in FISH experiments.
Preservation of large-scale chromatin structure in FISH experiments.
复制标题
在鱼类实验中保存大规模染色质结构。
DOI:
10.1007/s00412-006-0084-2
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发表时间:
2007-04
期刊:
影响因子:
1.6
通讯作者:
Dietzel, Steffen
中科院分区:
文献类型:
--
作者:
Hepperger, Claudia;Otten, Simone;von Hase, Johann;Dietzel, Steffen
The nuclear organization of specific endogenous chromatin regions can be investigated only by fluorescence in situ hybridization (FISH). One of the two fixation procedures is typically applied: (1) buffered formaldehyde or (2) hypotonic shock with methanol acetic acid fixation followed by dropping of nuclei on glass slides and air drying. In this study, we compared the effects of these two procedures and some variations on nuclear morphology and on FISH signals. We analyzed mouse erythroleukemia and mouse embryonic stem cells because their clusters of subcentromeric heterochromatin provide an easy means to assess preservation of chromatin. Qualitative and quantitative analyses revealed that formaldehyde fixation provided good preservation of large-scale chromatin structures, while classical methanol acetic acid fixation after hypotonic treatment severely impaired nuclear shape and led to disruption of chromosome territories, heterochromatin structures, and large transgene arrays. Our data show that such preparations do not faithfully reflect in vivo nuclear architecture. Supplementary material is available in the online version of this article at http://dx.doi.org/10.1007/s00412-006-0084-2 and is accessible for authorized users.
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DOI:
10.1083/jcb.200207115
发表时间:
2002-12-09
期刊:
The Journal of cell biology
影响因子:
--
作者:
Mahy NL;Perry PE;Bickmore WA
通讯作者:
Bickmore WA
DOI:
10.1083/jcb.145.6.1119
发表时间:
1999-06-14
期刊:
The Journal of cell biology
影响因子:
--
作者:
Croft JA;Bridger JM;Boyle S;Perry P;Teague P;Bickmore WA
通讯作者:
Bickmore WA
DOI:
10.1101/sqb.1993.058.01.085
发表时间:
1993-01-01
期刊:
COLD SPRING HARBOR SYMPOSIA ON QUANTITATIVE BIOLOGY
影响因子:
--
作者:
CREMER, T;KURZ, A;LICHTER, P
通讯作者:
LICHTER, P
影响因子:
2.7
作者:
Cheng, G;Thompson, RP;Gourdie, RG
通讯作者:
Gourdie, RG
DOI:
10.1007/bf01003288
发表时间:
1981-01-01
期刊:
HISTOCHEMICAL JOURNAL
影响因子:
--
作者:
FRASCHINI, A;PELLICCIARI, C;ROMANINI, MGM
通讯作者:
ROMANINI, MGM