Isolation of giant DNA fragments from flow-sorted human chromosomes

S. Minoshima, K. Kawasaki, R. Fukuyama, M. Maekawa, Jun Kudo, N. Shimizu

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

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).

Original languageEnglish
Pages (from-to)539-546
Number of pages8
JournalCytometry
Volume11
Issue number4
DOIs
Publication statusPublished - 1990

Fingerprint

Human Chromosomes
Chromosomes, Human, Pair 21
Chromosomes, Human, Pair 22
DNA
Chromosomes
Alu Elements
Argon
Pulsed Field Gel Electrophoresis
DNA Restriction Enzymes
Lasers
Equipment and Supplies

Keywords

  • Chromosome 21
  • Chromosome 22
  • NotI fragments
  • Pulsed field gel electrophore sis

ASJC Scopus subject areas

  • Hematology
  • Cell Biology
  • Pathology and Forensic Medicine
  • Biophysics
  • Endocrinology

Cite this

Minoshima, S., Kawasaki, K., Fukuyama, R., Maekawa, M., Kudo, J., & Shimizu, N. (1990). Isolation of giant DNA fragments from flow-sorted human chromosomes. Cytometry, 11(4), 539-546. https://doi.org/10.1002/cyto.990110413

Isolation of giant DNA fragments from flow-sorted human chromosomes. / Minoshima, S.; Kawasaki, K.; Fukuyama, R.; Maekawa, M.; Kudo, Jun; Shimizu, N.

In: Cytometry, Vol. 11, No. 4, 1990, p. 539-546.

Research output: Contribution to journalArticle

Minoshima, S, Kawasaki, K, Fukuyama, R, Maekawa, M, Kudo, J & Shimizu, N 1990, 'Isolation of giant DNA fragments from flow-sorted human chromosomes', Cytometry, vol. 11, no. 4, pp. 539-546. https://doi.org/10.1002/cyto.990110413
Minoshima S, Kawasaki K, Fukuyama R, Maekawa M, Kudo J, Shimizu N. Isolation of giant DNA fragments from flow-sorted human chromosomes. Cytometry. 1990;11(4):539-546. https://doi.org/10.1002/cyto.990110413
Minoshima, S. ; Kawasaki, K. ; Fukuyama, R. ; Maekawa, M. ; Kudo, Jun ; Shimizu, N. / Isolation of giant DNA fragments from flow-sorted human chromosomes. In: Cytometry. 1990 ; Vol. 11, No. 4. pp. 539-546.
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