Long-hidden 'junk DNA' regions may help explain cancer-linked genome instability

Article excerpt

Repetitive DNA regions long dismissed as genomic junk may play a crucial role in cancer development and chromosomal instability. Scientists studying SST1/NBL2 macrosatellites, stretches of repeated DNA sequences that were previously invisible to standard research methods, discovered these regions influence nuclear organization and genome regulation far more than expected. The findings suggest that what researchers thought was biological garbage might actually be key to understanding why cancers develop, potentially opening new avenues for cancer research and diagnosis.