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Tissue interactions pattern the mesenchyme of the embryonic mouse lung

Open access
Weaver, Molly, Batts, Lorene, Hogan, Brigid L.M·2003·Developmental Biology

Abstract

The mechanisms that control proliferation and differentiation of embryonic lung mesenchyme are largely unknown. We describe an explant system in which exogenous recombinant N-Sonic Hedgehog (N-Shh) protein sustains the survival and proliferation of lung mesenchyme in a dose-dependent manner. In addition, Shh upregulates several mesenchymal cell markers, including its target gene Patched (Ptc), intercellular signaling genes Bone Morphogenetic Protein-4 (Bmp4) and Noggin (Nog), and smooth muscle actin and myosin. In explants exposed to N-Shh in the medium, these products are upregulated throughout the mesenchyme, but not in the periphery. This exclusion zone correlates with the presence of an overlying mesothelial layer, which, as in vivo, expresses Fibroblast Growth Factor 9 (Fgf9). Recombinant Fgf9 protein inhibits the differentiation response of the mesenchyme to N-Shh, but does not affect proliferation. We propose a model for how factors made by two epithelial cell populations, the inner endoderm and the outer jacket of mesothelium, coordinately regulate the proliferation and differentiation of the lung mesoderm.

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Metadata

Authors
Weaver, M., Batts, L., & Hogan, B. L. M.
Venue
Developmental Biology
Publisher
Elsevier BV
Published
2003-06
Volume
258
Issue
1
Pages
169-184
ISSN
0012-1606 (ISSN-L)
OpenAlex
W1963750365
Cited by
175
References
4
FWCI
3.32
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Tissue interactions pattern the mesenchyme of the embryonic mouse lung. https://app.cochat.ai/papers/10.1016/s0012-1606(03)00117-9
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Weaver, M., Batts, L., & Hogan, B. L. M. (2003). Tissue interactions pattern the mesenchyme of the embryonic mouse lung. Developmental Biology. https://doi.org/10.1016/s0012-1606(03)00117-9

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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