978-LBR & LAP2: for Peripheral Heterochromatin Anchoring

Paper Talk · May 16, 2026 · 25m

This research identifies Lamin B receptor (LBR) and lamina-associated polypeptide 2 (LAP2) as the primary molecular tethers responsible for anchoring heterochromatin to the nuclear periphery in mammalian cells. By systematically depleting various nuclear envelope proteins, the authors discovered that losing these specific anchors causes dense genetic material to detach from the edge and relocate into the nuclear interior. This structural shift disrupts three-dimensional genome organization, reduces repressive epigenetic marks, and triggers widespread changes in gene expression. The study…