Lac operator repeats generate a traceable fragile site in mammalian cells.

Abstract:

:One limitation for the study of chromosomal fragile sites is that they must be studied on metaphase spreads, after the breakage. We show here that bacterial lac operator (lacO) repeats are prone to spontaneous breakage, which when combined with a fluorescent lac repressor (lacR) has allowed us to track a fragile site through the cell cycle. By using this system, we show that Plk1-interacting checkpoint helicase (PICH) is already present at fragile sites during interphase, suggesting roles for this helicase beyond mitosis. In addition, we report that the oncogene Myc promotes the formation of anaphase bridges and micronuclei containing fragile-site sequences.

journal_name

EMBO Rep

journal_title

EMBO reports

authors

Jacome A,Fernandez-Capetillo O

doi

10.1038/embor.2011.158

subject

Has Abstract

pub_date

2011-09-30 00:00:00

pages

1032-8

issue

10

eissn

1469-221X

issn

1469-3178

pii

embor2011158

journal_volume

12

pub_type

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