Basement membrane perforations guide anterior-posterior axis formation.

ABSTRACT: Establishment of the anterior-posterior (AP) axis is a critical symmetry-breaking event in mammalian development. In mice, this process involves the directed migration of the distal visceral endoderm (DVE). Here, we use targeted perturbations to demonstrate that asymmetric perforations in the basement membrane guide DVE migration. During implantation, matrix metalloproteinases in extra-embryonic tissues create uneven basement membrane perforations, establishing directional cues for cohesive DVE migration. Using light-sheet microscopy and tissue cartography, we show that migrating DVE deforms surrounding tissues. Physical modeling and live imaging of DVE protrusions indicate that basement membrane perforations orchestrate active force generation within the DVE. Extending these findings to h

SUBMITTER: Chen DY 

PROVIDER: S-EPMC12284222 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature