Evaluation of Sustained BMP-2 Release Profiles Using a Novel Fluorescence-Based Retention Assay |
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| Authors: | Wonmo Kang Dong-Sung Lee Jun-Hyeog Jang |
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| Affiliation: | 1. Department of Biochemistry, Inha University School of Medicine, Incheon, Republic of Korea.; 2. Department of Biomedical Chemistry, Konkuk University, Chung-Ju, Republic of Korea.; China Medical University, TAIWAN, |
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| Abstract: | The purpose of this study was to develop and characterize a novel fluorescence-based retention assay for the evaluation of the release profile of bone morphogenetic protein-2 (BMP-2) released from bone graft carrier. In this study, we evaluated the binding, release kinetics, and delivery efficacies of BMP-2 incorporated into hydroxyapatite (HA) bone grafts. The evaluation of the release profile of BMP-2 from HA bone grafts using a fluorescence-based retention assay revealed initial burst releases from the HA bone grafts followed by long sustained releases up to 14 weeks. The sustained biological activity of the released BMP-2 from HA bone grafts over the full 14-week period supports a long sustained mechanism via fluorescence-based retention assay. Thus, the results from this study show that BMP-2 could be incorporated into HA bone grafts for sustained release over a prolonged period of time with retention of bioactivity and our fluorescence-based retention assay, which is principally detecting the retention profile of BMP-2 in HA bone grafts, is more accurate than conventionally collecting the released BMP-2 for evaluation of BMP-2 release profiles. |
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