C/EBPβ deletion in macrophages impairs mammary gland alveolar budding during the estrous cycle.

ABSTRACT: Macrophages have important roles in mammary gland development and tissue homeostasis, but the specific mechanisms that regulate macrophage function need further elucidation. We have identified C/EBPβ as an important transcription factor expressed by multiple macrophage populations in the normal mammary gland. Mammary glands from mice with C/EBPβ-deficient macrophages (Cebpb ^ΔM) show a significant decrease in alveolar budding during the diestrus stage of the reproductive cycle, whereas branching morphogenesis remains unchanged. Defects in alveolar budding were found to be the result of both systemic hormones and local macrophage-directed signals. RNA sequencing shows significant changes in PR-responsive genes and alterations in the Wnt landscape of mammary epithelial cells

SUBMITTER: Rojo MD 

PROVIDER: S-EPMC11258408 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature