Isolation of giant DNA fragments from flow-sorted human chromosomes.
Isolation of giant DNA fragments from flow-sorted human chromosomes.
复制标题
从流式分选的人类染色体中分离巨大的 DNA 片段。
DOI:
10.1002/cyto.990110413
复制
发表时间:
1990
期刊:
影响因子:
--
通讯作者:
N. Shimizu
中科院分区:
文献类型:
--
作者:
S. Minoshima;K. Kawasaki;R. Fukuyama;M. Maekawa;J. Kudoh;N. Shimizu
We have established a method using a conventional cell sorter equipped with a single argon laser to sort intact human chromosomes that can be used as a source for the production of giant DNA fragments. Various improvements were made to both the equipment and sorting method to enhance the sorting resolution and avoid destruction of chromosomal DNA. Using this improved method chromosomes 21 and 22 were sorted from the B-lymphoblastoid line GM00130B, digested with the rare cutting restriction endonuclease NotI, and analyzed by pulsed field gel electrophoresis followed by Southern hybridization using the Alu repetitive sequence as a probe. More than 25 discrete NotI giant DNA fragments ranging from 50 kb to longer than 2.5 Mb were separated and the size distribution pattern was unique for each chromosome, indicating successful sorting of intact chromosomes. The cumulative size of these Alu-positive NotI DNA fragments were 22.7 Mb and 25.5 Mb for chromosomes 21 and 22, respectively. These values are 47% and 49% of the estimated size of chromosomes 21 (48 Mb) and 22 (52 Mb).
DOI:
10.1126/science.3873110
发表时间:
1985
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Yang-Feng,TL;Francke,U;Ullrich,A
通讯作者:
Ullrich,A
影响因子:
5.6
作者:
DEININGER, PL;JOLLY, DJ;SCHMID, CW
通讯作者:
SCHMID, CW
DOI:
--
发表时间:
1989
期刊:
Cytogenetics and cell genetics
影响因子:
--
作者:
Ruddle,FH;Kidd,KK
通讯作者:
Kidd,KK