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Gpr116 Receptor Regulates Distinctive Functions in Pneumocytes and Vascular Endothelium
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Immunology, Genetics and Pathology, Vascular Biology.
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Immunology, Genetics and Pathology, Vascular Biology. Karolinska Inst, Dept Med Biochem & Biophys, Div Vasc Biol, Stockholm, Sweden..
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Immunology, Genetics and Pathology, Vascular Biology.
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Immunology, Genetics and Pathology, Vascular Biology.
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2015 (English)In: PLoS ONE, ISSN 1932-6203, E-ISSN 1932-6203, Vol. 10, no 9, e0137949Article in journal (Refereed) Published
Abstract [en]

Despite its known expression in both the vascular endothelium and the lung epithelium, until recently the physiological role of the adhesion receptor Gpr116/ADGRF5 has remained elusive. We generated a new mouse model of constitutive Gpr116 inactivation, with a large genetic deletion encompassing exon 4 to exon 21 of the Gpr116 gene. This model allowed us to confirm recent results defining Gpr116 as necessary regulator of surfactant homeostasis. The loss of Gpr116 provokes an early accumulation of surfactant in the lungs, followed by a massive infiltration of macrophages, and eventually progresses into an emphysemalike pathology. Further analysis of this knockout model revealed cerebral vascular leakage, beginning at around 1.5 months of age. Additionally, endothelial-specific deletion of Gpr116 resulted in a significant increase of the brain vascular leakage. Mice devoid of Gpr116 developed an anatomically normal and largely functional vascular network, surprisingly exhibited an attenuated pathological retinal vascular response in a model of oxygen-induced retinopathy. These data suggest that Gpr116 modulates endothelial properties, a previously unappreciated function despite the pan-vascular expression of this receptor. Our results support the key pulmonary function of Gpr116 and describe a new role in the central nervous system vasculature.

Place, publisher, year, edition, pages
2015. Vol. 10, no 9, e0137949
National Category
Immunology in the medical area Cardiac and Cardiovascular Systems
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URN: urn:nbn:se:uu:diva-265915DOI: 10.1371/journal.pone.0137949ISI: 000361792100023PubMedID: 26394398OAI: oai:DiVA.org:uu-265915DiVA: diva2:867036
Funder
EU, European Research Council, 294556EU, European Research Council, ITN-2012-317250-VESSELSwedish Cancer SocietySwedish Research CouncilKnut and Alice Wallenberg Foundation
Available from: 2015-11-04 Created: 2015-11-04 Last updated: 2017-12-01

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Niaudet, ColinHofmann, Jennifer J.Mae, Maarja A.Jung, BongnamGängel, KonstantinVanlandewijck, MichaelAl Sayegh, SaharHe, LiqunCastro Freire, MarcoLavina Siemsen, BarbaraBetsholtz, Christer

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Niaudet, ColinHofmann, Jennifer J.Mae, Maarja A.Jung, BongnamGängel, KonstantinVanlandewijck, MichaelAl Sayegh, SaharHe, LiqunCastro Freire, MarcoLavina Siemsen, BarbaraBetsholtz, Christer
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Vascular BiologyDepartment of Immunology, Genetics and Pathology
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Immunology in the medical areaCardiac and Cardiovascular Systems

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