Methacrylated gellan gum hydrogels for application in nucleus pulposus regeneration : in vitro and in vivo studies

3B’s Research Group – Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, S. Claudio de Barco, 4806-909 Taipas, Guimaraes, Portugal ICVS/3B’s – PT Government Associate Laboratory, Braga/Guimaraes, Portugal, miguel.oliveira@dep.uminho.pt Life and Health Science Research Institute (ICVS), School of Health Sciences, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal