biostudies-literatureUnknown6(12)Tondera CHydrogels based on gelatin have evolved as promising multifunctional biomaterials. Gelatin is crosslinked with lysine diisocyanate ethyl ester (LDI) and the molar ratio of gelatin and LDI in the starting material mixture determines elastic properties of the resulting hydrogel. In order to investigate the clinical potential of these biopolymers, hydrogels with different ratios of gelatin and diisocyanate (3-fold (G10_LNCO3) and 8-fold (G10_LNCO8) molar excess of isocyanate groups) were subcutaneously implanted in mice (uni- or bilateral implantation). Degradation and biomaterial-tissue-interaction were investigated <i>in vivo</i> (MRI, optical imaging, PET) and <i>ex vivo</i> (autoradiography, histology, serum analysis). Multimodal imaging revealed that the number of covalent net points corTheranostics2114-2128https://www.ebi.ac.uk/biostudies/studies/S-EPMC5039684biostudies-literatureGelatin-based Hydrogel Degradation and Tissue Interaction <i>in vivo</i>: Insights from Multimodal Preclinical Imaging in Immunocompetent Nude Mice.PMC5039684Jung FPietzsch JSteinbach JKlopfleisch RLendlein ANeuber CKruger-Genge ATondera CHauser SNeffe ATfalseGelatin-based Hydrogel Degradation and Tissue Interaction <i>in vivo</i>: Insights from Multimodal Preclinical Imaging in Immunocompetent Nude Mice.Hydrogels based on gelatin have evolved as promising multifunctional biomaterials. Gelatin is crosslinked with lysine diisocyanate ethyl ester (LDI) and the molar ratio of gelatin and LDI in the starting material mixture determines elastic properties of the resulting hydrogel. In order to investigate the clinical potential of these biopolymers, hydrogels with different ratios of gelatin and diisocyanate (3-fold (G10_LNCO3) and 8-fold (G10_LNCO8) molar excess of isocyanate groups) were subcutaneously implanted in mice (uni- or bilateral implantation). Degradation and biomaterial-tissue-interaction were investigated <i>in vivo</i> (MRI, optical imaging, PET) and <i>ex vivo</i> (autoradiography, histology, serum analysis). Multimodal imaging revealed that the number of covalent net points cor2016-01-01T00:00:00Z20162026-07-15T20:34:14.409Z2026-07-09T10:15:34.216ZS-EPMC50396842769894410.7150/thno.16614