Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/81629
Título: | Integrin-specific hydrogels for growth factor-free vasculogenesis |
Autor(es): | Moreira, Helena R. Rodrigues, Daniel Barreira Ribeiro, Sara Freitas Silva, Lucília Pereira Morais, Alain da S. Jarnalo, Mariana Horta, Ricardo Reis, R. L. Pirraco, Rogério P. Marques, A. P. |
Palavras-chave: | Biomaterials Stromal vascular fraction Vascularization Vasculogenesis |
Data: | Set-2022 |
Editora: | Springer Nature |
Revista: | npj Regenerative Medicine |
Citação: | Moreira H. R., Rodrigues D. B., Freitas-Ribeiro S., da Silva L. P., Morais A., Jalano M., Horta R., Reis R. L., Pirraco R. P., Marques A. P. Integrin-specific hydrogels for growth factor-free vasculogenesis, npj Regenerative Medicine, Vol. 7, pp. 57, doi:10.1038/s41536-022-00253-4, 2022 |
Resumo(s): | Integrin-binding biomaterials have been extensively evaluated for their capacity to enable de novo formation of capillary-like structures/vessels, ultimately supporting neovascularization in vivo. Yet, the role of integrins as vascular initiators in engineered materials is still not well understood. Here, we show that αvβ3 integrin-specific 3D matrices were able to retain PECAM1+ cells from the stromal vascular fraction (SVF) of adipose tissue, triggering vasculogenesis in vitro in the absence of extrinsic growth factors. Our results suggest that αvβ3-RGD-driven signaling in the formation of capillary-like structures prevents the activation of the caspase 8 pathway and activates the FAK/paxillin pathway, both responsible for endothelial cells (ECs) survival and migration. We also show that prevascularized αvβ3 integrin-specific constructs inosculate with the host vascular system fostering in vivo neovascularization. Overall, this work demonstrates the ability of the biomaterial to trigger vasculogenesis in an integrin-specific manner, by activating essential pathways for EC survival and migration within a self-regulatory growth factor microenvironment. This strategy represents an improvement to current vascularization routes for Tissue Engineering constructs, potentially enhancing their clinical applicability. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/81629 |
DOI: | 10.1038/s41536-022-00253-4 |
e-ISSN: | 2057-3995 |
Versão da editora: | https://www.nature.com/articles/s41536-022-00253-4 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | 3B’s - Artigos em revistas/Papers in scientific journals |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
---|---|---|---|---|
20877-s41536-022-00253-4-1.pdf | 3,58 MB | Adobe PDF | Ver/Abrir |