Alendronate-Modified Hydroxyapatite Nanoparticles for Bone-Specific Dual Delivery of Drug and Bone Mineral
- Authors
- Hwang, Seok-Joon; Lee, Ji-Seon; Ryu, Tae-Kyung; Kang, Rae-Hyung; Jeong, Ki-Young; Jun, Dae-Ryong; Koh, Jung-Min; Kim, Sung-Eun; Choi, Sung-Wook
- Issue Date
- 7월-2016
- Publisher
- SPRINGER
- Keywords
- alendronate; hydroxyapatite; layer-by-layer method; dual targeted delivery
- Citation
- MACROMOLECULAR RESEARCH, v.24, no.7, pp.623 - 628
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- MACROMOLECULAR RESEARCH
- Volume
- 24
- Number
- 7
- Start Page
- 623
- End Page
- 628
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/88144
- DOI
- 10.1007/s13233-016-4094-5
- ISSN
- 1598-5032
- Abstract
- Alendronate (Alen)-modified hydroxyapatite (HAp) nanoparticles with multilayers of poly(allylamine) (PAA) and alginate (ALG) were fabricated for bone-specific dual delivery of drug and mineral. Negatively charged HAp nanoparticles were coated with three layers of PAA and ALG using a layer-by-layer (LbL) method and then conjugated with Alen at the outmost layer of the LbL-coated HAp nanoparticles via carbodiimide chemistry. Alen-modified HAp nanoparticles had a spherical morphology and an average size of 61.5 nm. The superior adsorption property of the Alen-modified HAp nanoparticles was quantitatively confirmed using tricalcium phosphate disks as a bone model, compared to HAp nanoparticles. Cell culture assays revealed a higher proliferation rate and alkaline phosphatase activity of osteoblasts treated with the Alen-modified HAp nanoparticles.
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