Evaluation of different crosslinking agents on hybrid biomimetic collagen-hydroxyapatite composites for regenerative medicine.

Gopal Shankar Krishnakumar, Natalia Gostyńska, Massimiliano Dapporto, Elisabetta Campodoni, M Montesi, Silvia Panseri, A. Tampieri, Elizaveta Kon, Maurilio Marcacci, S. Sprio, M. Sandri

Research output: Contribution to journalArticlepeer-review


This study focuses on the development of novel bone-like scaffolds by bio-inspired, pH-driven, mineralization of type I collagen matrix with magnesium-doped hydroxyapatite nanophase (MgHA/Coll). To this aim, this study evaluates the altered modifications in the obtained composite due to different crosslinkers such as dehydrothermal treatment (DHT), 1,4-butanediol diglycidyl ether (BDDGE) and ribose in terms of morphological, physical-chemical and biological properties. The physical-chemical properties of the composites evaluated by XRD, FTIR, ICP and TGA demonstrated that the chemical mimesis of bone was effectively achieved using the in-lab biomineralization process. Furthermore, the presence of various crosslinkers greatly promoted beneficial enzymatic resistivity and swelling ability. The morphological results revealed highly porous and fibrous micro-architecture with total porosity above 85% with anisotropic pore size within the range of 50-200μm in all the analysed composites. The mechanical behaviour in response to compressive forces demonstrated enhanced compressive modulus in all crosslinked composites, suggesting that mechanical behaviour is largely dependent on the type of crosslinker used. The biomimetic compositional and morphological features of the composites elicited strong cell-material interaction. Therefore, the results showed that by activating specific crosslinking mechanisms, hybrid composites can be designed and tailored to develop tissue-specific biomimetic biomaterials for hard tissue engineering.
Original languageEnglish
Pages (from-to)739-748
Number of pages10
JournalInternational Journal of Biological Macromolecules
Publication statusPublished - 2017


  • Biomimetic
  • Biomineralization
  • Crosslinking
  • DHT
  • Ribose


Dive into the research topics of 'Evaluation of different crosslinking agents on hybrid biomimetic collagen-hydroxyapatite composites for regenerative medicine.'. Together they form a unique fingerprint.

Cite this