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Chromosome fragile sites
Durkin, Sandra G ; Glover, Thomas W
Annual review of genetics, 2007-01, Vol.41 (1), p.169-192
[Periódico revisado por pares]
United States: Annual Reviews, Inc
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Título:
Chromosome fragile sites
Autor:
Durkin, Sandra G
;
Glover, Thomas W
Assuntos:
Animals
;
Cancer
;
Cell cycle
;
Cells, Cultured
;
Chromosome Fragile Sites
;
Chromosomes
;
Deoxyribonucleic acid
;
DNA
;
Genomic Instability
;
Genomics
;
Humans
;
MicroRNAs - genetics
;
Mutation
;
Neoplasms - genetics
É parte de:
Annual review of genetics, 2007-01, Vol.41 (1), p.169-192
Notas:
ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-3
content type line 23
ObjectType-Review-1
Descrição:
Chromosomal fragile sites are specific loci that preferentially exhibit gaps and breaks on metaphase chromosomes following partial inhibition of DNA synthesis. Their discovery has led to novel findings spanning a number of areas of genetics. Rare fragile sites are seen in a small proportion of individuals and are inherited in a Mendelian manner. Some, such as FRAXA in the FMR1 gene, are associated with human genetic disorders, and their study led to the identification of nucleotide-repeat expansion as a frequent mutational mechanism in humans. In contrast, common fragile sites are present in all individuals and represent the largest class of fragile sites. Long considered an intriguing component of chromosome structure, common fragile sites have taken on novel significance as regions of the genome that are particularly sensitive to replication stress and that are frequently rearranged in tumor cells. In recent years, much progress has been made toward understanding the genomic features of common fragile sites and the cellular processes that monitor and influence their stability. Their study has merged with that of cell cycle checkpoints and DNA repair, and common fragile sites have provided insight into understanding the consequences of replication stress on DNA damage and genome instability in cancer cells.
Editor:
United States: Annual Reviews, Inc
Idioma:
Inglês
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