Lamina-associated domains: Tethers and looseners

Lamina-associated domains (LADs) are large heterochromatic regions that are positioned at the nuclear lamina (NL). A major question is how LAD-NL interactions are mediated and controlled. Here, we review recent progress in the search for molecular tethers and looseners of LADs and we discuss the link between LAD-NL tethering, transcription regulation, and genome replication. We also provide a brief summary of technological advances that may uncover new aspects of LAD biology.