Immobilization of Denosumab on Titanium Affects Osteoclastogenesis of Human Peripheral Blood Monocytes

International Journal of Molecular Sciences
Felicitas BeckSusanne Mayer-Wagner

Abstract

Immobilization of proteins has been examined to improve implant surfaces. In this study, titanium surfaces were modified with nanofunctionalized denosumab (cDMAB), a human monoclonal anti-RANKL IgG. Noncoding DNA oligonucleotides (ODN) served as linker molecules between titanium and DMAB. Binding and release experiments demonstrated a high binding capacity of cDMAB and continuous release. Human peripheral mononuclear blood cells (PBMCs) were cultured in the presence of RANKL/MCSF for 28 days and differentiated into osteoclasts. Adding soluble DMAB to the medium inhibited osteoclast differentiation. On nanofunctionalized titanium specimens, the osteoclast-specific TRAP5b protein was monitored and showed a significantly decreased amount on cDMAB-titanium in PBMCs + RANKL/MCSF. PBMCs on cDMAB-titanium also changed SEM cell morphology. In conclusion, the results indicate that cDMAB reduces osteoclast formation and has the potential to reduce osteoclastogenesis on titanium surfaces.

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Citations

Mar 2, 2021·Frontiers in Bioengineering and Biotechnology·Cheng ZhangPenglai Wang

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Methods Mentioned

BETA
chips
enzyme-linked fluorescence assay
Scanning electron microscopy
light microscopy
enzyme-linked immunosorbent assay
ELISA
Fluorescence
confocal microscopy

Software Mentioned

SAS

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