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Petrillo S, De Giorgio F, Bertino F, Garello F, Bitonto V, Longo DL, Mercurio S, Ammirata G, Allocco AL, Fiorito V, Chiabrando D, Altruda F, Terreno E, Provero P, Munaron L, Genova T, Nóvoa A, Carlos AR, Cardoso S, Mallo M, Soares MP, Tolosano E. Endothelial cells require functional FLVCR1a during developmental and adult angiogenesis. Angiogenesis 2023; 26:365-384. [PMID: 36631598 PMCID: PMC10328904 DOI: 10.1007/s10456-023-09865-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Accepted: 01/06/2023] [Indexed: 01/13/2023]
Abstract
The Feline Leukemia Virus Subgroup C Receptor 1a (FLVCR1a) is a transmembrane heme exporter essential for embryonic vascular development. However, the exact role of FLVCR1a during blood vessel development remains largely undefined. Here, we show that FLVCR1a is highly expressed in angiogenic endothelial cells (ECs) compared to quiescent ECs. Consistently, ECs lacking FLVCR1a give rise to structurally and functionally abnormal vascular networks in multiple models of developmental and pathologic angiogenesis. Firstly, zebrafish embryos without FLVCR1a displayed defective intersegmental vessels formation. Furthermore, endothelial-specific Flvcr1a targeting in mice led to a reduced radial expansion of the retinal vasculature associated to decreased EC proliferation. Moreover, Flvcr1a null retinas showed defective vascular organization and loose attachment of pericytes. Finally, adult neo-angiogenesis is severely affected in murine models of tumor angiogenesis. Tumor blood vessels lacking Flvcr1a were disorganized and dysfunctional. Collectively, our results demonstrate the critical role of FLVCR1a as a regulator of developmental and pathological angiogenesis identifying FLVCR1a as a potential therapeutic target in human diseases characterized by aberrant neovascularization.
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Affiliation(s)
- Sara Petrillo
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center (MBC) "Guido Tarone", University of Torino, Via Nizza, 52, 10126, Turin, Italy.
| | - F De Giorgio
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center (MBC) "Guido Tarone", University of Torino, Via Nizza, 52, 10126, Turin, Italy
| | - F Bertino
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center (MBC) "Guido Tarone", University of Torino, Via Nizza, 52, 10126, Turin, Italy
| | - F Garello
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center (MBC) "Guido Tarone", University of Torino, Via Nizza, 52, 10126, Turin, Italy
| | - V Bitonto
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center (MBC) "Guido Tarone", University of Torino, Via Nizza, 52, 10126, Turin, Italy
| | - D L Longo
- Institute of Biostructures and Bioimaging (IBB), Italian National Research Council (CNR), Via Nizza, 52, 10126, Turin, Italy
| | - S Mercurio
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center (MBC) "Guido Tarone", University of Torino, Via Nizza, 52, 10126, Turin, Italy
| | - G Ammirata
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center (MBC) "Guido Tarone", University of Torino, Via Nizza, 52, 10126, Turin, Italy
| | - A L Allocco
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center (MBC) "Guido Tarone", University of Torino, Via Nizza, 52, 10126, Turin, Italy
| | - V Fiorito
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center (MBC) "Guido Tarone", University of Torino, Via Nizza, 52, 10126, Turin, Italy
| | - D Chiabrando
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center (MBC) "Guido Tarone", University of Torino, Via Nizza, 52, 10126, Turin, Italy
| | - F Altruda
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center (MBC) "Guido Tarone", University of Torino, Via Nizza, 52, 10126, Turin, Italy
| | - E Terreno
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center (MBC) "Guido Tarone", University of Torino, Via Nizza, 52, 10126, Turin, Italy
| | - P Provero
- Department of Molecular Biotechnology and Health Sciences, and GenoBiToUS, Genomics and Bioinformatics Service, University of Torino, Turin, Italy
- Center for Translational Genomics and Bioinformatics, San Raffaele Scientific Institute IRCCS, Milan, Italy
| | - L Munaron
- Department of Life Sciences and Systems Biology, University of Torino, Via Accademia Albertina 13, 10123, Turin, Italy
| | - T Genova
- Department of Life Sciences and Systems Biology, University of Torino, Via Accademia Albertina 13, 10123, Turin, Italy
| | - A Nóvoa
- Instituto Gulbenkian de Ciência, Oeiras, Portugal
| | - A R Carlos
- Instituto Gulbenkian de Ciência, Oeiras, Portugal
| | - S Cardoso
- Instituto Gulbenkian de Ciência, Oeiras, Portugal
| | - M Mallo
- Instituto Gulbenkian de Ciência, Oeiras, Portugal
| | - M P Soares
- Instituto Gulbenkian de Ciência, Oeiras, Portugal
| | - E Tolosano
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center (MBC) "Guido Tarone", University of Torino, Via Nizza, 52, 10126, Turin, Italy
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