Journal
CELL MEDICINE
Volume 7, Issue 3, Pages 123-131Publisher
SAGE PUBLICATIONS INC
DOI: 10.3727/215517915X688057
Keywords
Low-intensity pulsed ultrasound (LIPUS); Nanohydroxyapatite (NHA); Adipose-derived stem cells (ADSCs); Bone regeneration; Osteoblast
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Funding
- Japan Society for the Promotion of Science (JSPS)
- Nakatomi Foundation
- Grants-in-Aid for Scientific Research [26893272] Funding Source: KAKEN
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The osteogenic induction of adipose-derived stem cells (DSCs) has been regarded as an important step in bone tissue engineering. In the present study, we focused on the buccal fat pad (BHP) as a source of adipose tissue, since BFPs are encapsulated by adipose tissue and are often coextirpated dining oral surgery). Low-intensity pulsed ultrasound (LIPUS) is effective in the treatment of fractures, and nanohydroxyapatite (NHA) is known as a bone substitute material. Here we investigated the synergistic effects of LIPUS and NHA in the osteogenesis of ADSCs. A combination of LIPUS irritation and NHA as a scaffold significantly increased the osteogenic differentiation of ADSCs in vitro, and in our in vivo study in which ADSCs were transplanted into calvarial bone defects of nude mice, the combinational effect greatly enhanced the new bone formation of the margin ot the defects. These results demonstrate that synergistic effects of LIPUS and NHA are capable of effectively inducing the differentiation of ADSCs into osteoblasts, and they suggest a novel therapeutic strategy for bone regeneration by the auto transplantation of ADSCs.
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