Isolation of human sequences that replicate autonomously in human cells.

Journal Article (Journal Article)

We have isolated a heterogeneous collection of human genomic sequences which replicate autonomously when introduced into human cells. The novel strategy for the isolation of these sequences involved cloning random human DNA fragments into a defective Epstein-Barr virus vector. This vector alone was unable to replicate in human cells, but appeared to provide for the nuclear retention of linked DNA. The human sequences persist in a long-term replication assay (greater than 2 months) in the presence of the viral nuclear retention sequences. Using a short-term (4-day) assay, we showed that the human sequences are able to replicate in the absence of all viral sequences. The plasmids bearing human sequences were shown to replicate based on the persistence of MboI-sensitive plasmid DNA in the long-term assay and the appearance of DpnI-resistant DNA in the short-term assay. The human sequences were shown to be responsible for the replication activity and may represent authentic human origins of replication.

Full Text

Duke Authors

Cited Authors

  • Krysan, PJ; Haase, SB; Calos, MP

Published Date

  • March 1989

Published In

Volume / Issue

  • 9 / 3

Start / End Page

  • 1026 - 1033

PubMed ID

  • 2542763

Pubmed Central ID

  • PMC362692

Electronic International Standard Serial Number (EISSN)

  • 1098-5549

International Standard Serial Number (ISSN)

  • 0270-7306

Digital Object Identifier (DOI)

  • 10.1128/mcb.9.3.1026-1033.1989


  • eng