In vivo imaging of mammary epithelial cell dynamics in response to lineage-biased Wnt/β-catenin activation.

ABSTRACT: Real-time in vivo imaging provides an essential window into the spatiotemporal cellular events contributing to tissue development and pathology. By coupling longitudinal intravital imaging with genetic lineage tracing, here we capture the earliest cellular events arising in response to active Wnt/β-catenin signaling and the ensuing impact on the organization and differentiation of the mammary epithelium. This enables us to interrogate how Wnt/β-catenin regulates the dynamics of distinct subpopulations of mammary epithelial cells in vivo and in real time. We show that β-catenin stabilization, when targeted to either the mammary luminal or basal epithelial lineage, leads to cellular rearrangements that precipitate the formation of hyperplastic lesions that undergo squamous transdifferentiati

SUBMITTER: Lloyd-Lewis B 

PROVIDER: S-EPMC7615182 | biostudies-literature | 2022 Mar

REPOSITORIES: biostudies-literature