Osteogenesis evaluation of duck's feet-derived collagen/hydroxyapatite sponges immersed in dexamethasone

• Published in: Biomaterials research 2017-02, Vol.21 (1), p.2-2
• Main Authors: Kook, Yeon Ji, Lee, Dae Hoon, Song, Jeong Eun, Tripathy, Nirmalya, Jeon, Yoo Shin, Jeon, Ha Yan, Oliveira, Joaquim M, Reis, Rui L, Khang, Gilson
• Format: Article
• Language: English
• Subjects: Chemical properties; Collagen; Dexamethasone; Hydroxyapatites; Osteogenesis; Physiological aspects
• ISSN: 1226-4601; 2055-7124; 2055-7124
• DOI: 10.1186/s40824-017-0088-4

The aim of this study was to investigate the osteogenesis effects of DC and DC/HAp sponge immersed in without and with dexamethasone. The experimental groups in this study were DC and DC/HAp sponge immersed in without dexamethasone (Dex(-)DC and Dex(-)-DC/HAp group) and with dexamethasone (Dex(+)-DC and Dex(+)-DC/HAp group). We characterized DC and DC/HAp sponge using compressive strength, scanning electron microscopy (SEM). Also, osteogenic differentiation of BMSCs on sponge (Dex(-)DC, Dex(-)-DC/HAp, Dex(+)-DC and Dex(+)-DC/HAp group) was assessed by SEM, 3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyltetrazoliumbromide (MTT) assay, alkaline phosphatase (ALP) activity assay and reverse transcription-PCR (RT-PCR). In this study, we assessed osteogenic differentiation of BMSCs on Duck's feet-derived collagen (DC)/HAp sponge immersed with dexamethasone Dex(+)-DC/HAp. These results showed that Dex(+)-DC/HAp group increased cell proliferation and osteogenic differentiation of BMSCs during 28 days. From these results, Dex(+)-DC/HAp can be envisioned as a potential biomaterial for bone regeneration applications.