A1 Refereed original research article in a scientific journal
Embigin deficiency leads to delayed embryonic lung development and high neonatal mortality in mice
Authors: Talvi Salli, Jokinen Johanna, Sipilä Kalle, Rappu Pekka, Zhang Fu-Ping, Poutanen Matti, Rantakari Pia, Heino Jyrki
Publisher: Cell Press
Publication year: 2024
Journal: iScience
Journal name in source: iScience
Article number: 108914
Volume: 27
Issue: 2
ISSN: 2589-0042
eISSN: 2589-0042
DOI: https://doi.org/10.1016/j.isci.2024.108914
Web address : https://doi.org/10.1016/j.isci.2024.108914
Self-archived copy’s web address: https://research.utu.fi/converis/portal/detail/Publication/387258948
Summary Embigin (Gp70), a receptor for fibronectin and an ancillary protein for monocarboxylate transporters, is known to regulate stem cell niches in sebaceous gland and bone marrow. Here, we show that embigin expression is at high level during early mouse embryogenesis and that embigin is essential for lung development. Markedly increased neonatal mortality of Emb−/− mice can be explained by the compromised lung maturation: in Emb−/− mice (E17.5) the number and the size of the small airways and distal airspace are significantly smaller, there are fewer ATI and ATII cells, and the alkaline phosphatase activity in amniotic fluid is lower. Emb−/− lungs show less peripheral branching already at E12.5, and embigin is highly expressed in lung primordium. Thus, embigin function is essential at early pseudoglandular stage or even earlier. Furthermore, our RNA-seq analysis and Ki67 staining results support the idea that the development of Emb−/− lungs is rather delayed than defected.
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