Xiong, Y.* ; Scerbo, M.J. ; Seelig, A. ; Volta, F. ; O'Brien, N. ; Dicker, A.* ; Padula, D. ; Lickert, H. ; Gerdes, J.M. ; Berggren, P.O.*
Islet vascularization is regulated by primary endothelial cilia via VEGF-A-dependent signaling.
eLife 9:e56914 (2020)
Islet vascularization is essential for intact islet function and glucose homeostasis. We have previously shown that primary cilia directly regulate insulin secretion. However, it remains unclear whether they are also implicated in islet vascularization. At eight weeks, murine Bbs4-/-islets show significantly lower intra-islet capillary density with enlarged diameters. Transplanted Bbs4-/- islets exhibit delayed re-vascularization and reduced vascular fenestration after engraftment, partially impairing vascular permeability and glucose delivery to β-cells. We identified primary cilia on endothelial cells as the underlying cause of this regulation, via the vascular endothelial growth factor-A (VEGF-A)/VEGF receptor 2 (VEGFR2) pathway. In vitro silencing of ciliary genes in endothelial cells disrupts VEGF-A/VEGFR2 internalization and downstream signaling. Consequently, key features of angiogenesis including proliferation and migration are attenuated in human BBS4 silenced endothelial cells. We conclude that endothelial cell primary cilia regulate islet vascularization and vascular barrier function via the VEGF-A/VEGFR2 signaling pathway.
Impact Factor
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Times Cited
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Publikationstyp
Artikel: Journalartikel
Dokumenttyp
Wissenschaftlicher Artikel
Typ der Hochschulschrift
Herausgeber
Schlagwörter
Vegf-a ; Cell Biology ; Developmental Biology ; Human ; Insulin ; Islet Vascularization ; Mouse ; Pancreatic Islet ; Primary Cilia; Growth Factor-a; Pancreatic-islets; In-vivo; Transport; Cells; Revascularization; Intraflagellar; Recombination; Homeostasis; Receptors
Keywords plus
Sprache
englisch
Veröffentlichungsjahr
2020
Prepublished im Jahr
HGF-Berichtsjahr
2020
ISSN (print) / ISBN
2050-084X
e-ISSN
2050-084X
ISBN
Bandtitel
Konferenztitel
Konferzenzdatum
Konferenzort
Konferenzband
Quellenangaben
Band: 9,
Heft: ,
Seiten: ,
Artikelnummer: e56914
Supplement: ,
Reihe
Verlag
eLife Sciences Publications
Verlagsort
Sheraton House, Castle Park, Cambridge, Cb3 0ax, England
Tag d. mündl. Prüfung
0000-00-00
Betreuer
Gutachter
Prüfer
Topic
Hochschule
Hochschulort
Fakultät
Veröffentlichungsdatum
0000-00-00
Anmeldedatum
0000-00-00
Anmelder/Inhaber
weitere Inhaber
Anmeldeland
Priorität
Begutachtungsstatus
Peer reviewed
POF Topic(s)
90000 - German Center for Diabetes Research
30201 - Metabolic Health
Forschungsfeld(er)
Helmholtz Diabetes Center
PSP-Element(e)
G-501900-233
G-502300-001
Förderungen
European Research Council
FP7 People: Marie-Curie Actions
ERC
Copyright
Erfassungsdatum
2020-12-17