In situ synthesis and in vitro biocompatibility of needle-like nano-hydroxyapatite in agar-gelatin co-hydrogel

摘要

Needle-like nano-hydroxyapatite (n-HA) was firstly fabricated in the current study based on agar-gelatin co-hydrogel using the in situ method. It was found that the crystallinity of n-HA was improved with the gelatin content increasing within the hydrogel. In vitro biocompatibility of the obtained n-HA was characterized by testing cell proliferation and differentiation (alkaline phosphatase activity) of MC3T3-E1 cells. The results indicated that the needle-like n-HA synthesized in the presence of agar-gelatin co-hydrogel was more favorable for the proliferation and differentiation of MC3T3-E1 compared to the traditional method. These biocompatible n-HA crystals hold great potential to be applied as bioactive materials for bone tissue engineering.