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Sand, F.W.* ; Hörnblad, A.* ; Johansson, J.K.* ; Lorén, C.* ; Edsbagge, J.* ; Ståhlberg, A.* ; Magenheim, J.* ; Ilovich, O.* ; Mishani, E.* ; Dor, Y.* ; Ahlgren, U.* ; Semb, H.

Growth-limiting role of endothelial cells in endoderm development.

Dev. Biol. 352, 267-277 (2011)
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Endoderm development is dependent on inductive signals from different structures in close vicinity, including the notochord, lateral plate mesoderm and endothelial cells. Recently, we demonstrated that a functional vascular system is necessary for proper pancreas development, and that sphingosine-1-phosphate (S1P) exhibits the traits of a blood vessel-derived molecule involved in early pancreas morphogenesis. To examine whether S1P(1)-signaling plays a more general role in endoderm development, S1P(1)-deficient mice were analyzed. S1P(1) ablation results in compromised growth of several foregut-derived organs, including the stomach, dorsal and ventral pancreas and liver. Within the developing pancreas the reduction in organ size was due to deficient proliferation of Pdx1(+) pancreatic progenitors, whereas endocrine cell differentiation was unaffected. Ablation of endothelial cells in vitro did not mimic the S1P(1) phenotype, instead, increased organ size and hyperbranching were observed. Consistent with a negative role for endothelial cells in endoderm organ expansion, excessive vasculature was discovered in S1P(1)-deficient embryos. Altogether, our results show that endothelial cell hyperplasia negatively influences organ development in several foregut-derived organs.
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Publication type Article: Journal article
Document type Scientific Article
Language english
Publication Year 2011
HGF-reported in Year 2011
ISSN (print) / ISBN 0012-1606
e-ISSN 0012-1606
Quellenangaben Volume: 352, Issue: 2, Pages: 267-277 Article Number: , Supplement: ,
Publisher Elsevier
Reviewing status Peer reviewed
POF-Topic(s) 30201 - Metabolic Health
Research field(s) Helmholtz Diabetes Center
PSP Element(s) G-506800-001
PubMed ID 21281624
Erfassungsdatum 2020-02-18