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Nat Rev Genet. 2010 Nov;11(11):786-99. doi: 10.1038/nrg2828.

Mechanisms of trinucleotide repeat instability during human development.

Author information

  • Lawrence Berkeley National Laboratory, Life Sciences Division, 1 Cyclotron Rd, 83R0101, Berkeley, California 94720, USA. ctmcmurray@lbl.gov

Erratum in

  • Nat Rev Genet. 2010 Dec;11(12):886.

Abstract

Trinucleotide expansion underlies several human diseases. Expansion occurs during multiple stages of human development in different cell types, and is sensitive to the gender of the parent who transmits the repeats. Repair and replication models for expansions have been described, but we do not know whether the pathway involved is the same under all conditions and for all repeat tract lengths, which differ among diseases. Currently, researchers rely on bacteria, yeast and mice to study expansion, but these models differ substantially from humans. We need now to connect the dots among human genetics, pathway biochemistry and the appropriate model systems to understand the mechanism of expansion as it occurs in human disease.

PMID:
20953213
[PubMed - indexed for MEDLINE]
PMCID:
PMC3175376
Free PMC Article

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