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2016 ; 36
(ä): 34-40
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TAD disruption as oncogenic driver
#MMPMID27111891
Valton AL
; Dekker J
Curr Opin Genet Dev
2016[Feb]; 36
(ä): 34-40
PMID27111891
show ga
Topologically Associating Domains (TADs) are conserved during evolution and play
roles in guiding and constraining long-range regulation of gene expression.
Disruption of TAD boundaries results in aberrant gene expression by exposing
genes to inappropriate regulatory elements. Recent studies have shown that TAD
disruption is often found in cancer cells and contributes to oncogenesis through
two mechanisms. One mechanism locally disrupts domains by deleting or mutating a
TAD boundary leading to fusion of the two adjacent TADs. The other mechanism
involves genomic rearrangements that break up TADs and creates new ones without
directly affecting TAD boundaries. Understanding the mechanisms by which TADs
form and control long-range chromatin interactions will therefore not only
provide insights into the mechanism of gene regulation in general, but will also
reveal how genomic rearrangements and mutations in cancer genomes can lead to
misregulation of oncogenes and tumor suppressors.