RRC ID 11716
Author Sakurai H, Okado M, Ito F, Kawasaki K.
Title Anaphase DNA bridges induced by lack of RecQ5 in Drosophila syncytial embryos.
Journal FEBS Lett
Abstract Drosophila melanogaster RecQ5, a member of the RecQ family, is expressed in early embryos. The loss of maternally-derived RecQ5 leads to spontaneous mitotic defects in syncytial embryos. We demonstrate that the mitotic defects are derived from anaphase DNA bridges. Pairs of daughter nuclei that had been linked by the bridges concurrently exited from the cycle and were eliminated by Chk2-dependent centrosome inactivation. These results suggest that the lack of RecQ5 leads to spontaneous double-stranded DNA breaks (DSBs). RecQ5 may function in the resolution of anaphase DNA bridges during mitosis or in DSB repair during interphase in syncytial Drosophila embryos.
Volume 585(12)
Pages 1923-8
Published 2011-6-23
DOI 10.1016/j.febslet.2011.04.074
PII S0014-5793(11)00351-6
PMID 21570978
MeSH Anaphase / physiology* Animals Checkpoint Kinase 2 DNA / ultrastructure* DNA Breaks, Double-Stranded DNA Helicases Drosophila Proteins / deficiency* Drosophila melanogaster / cytology Drosophila melanogaster / embryology* Drosophila melanogaster / metabolism* Embryo, Nonmammalian / cytology* Giant Cells Mitosis Protein Serine-Threonine Kinases RecQ Helicases / deficiency*
IF 3.057
Times Cited 13
WOS Category BIOPHYSICS BIOCHEMISTRY & MOLECULAR BIOLOGY CELL BIOLOGY
Resource
Drosophila DGRC#109793