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  • Depot injectable biodegradable nanoparticles loaded with recombinant human bone morphogenetic protein-2: preparation, characterization, and in vivo evaluation.

Depot injectable biodegradable nanoparticles loaded with recombinant human bone morphogenetic protein-2: preparation, characterization, and in vivo evaluation.

Drug design, development and therapy (2015-07-24)
Ali Habiballah Hassan, Khaled Mohamed Hosny, Zuahir A Murshid, Adel Alhadlaq, Ahmed Alyamani, Ghada Naguib
ABSTRACT

The aim of this study is to utilize the biocompatibility characteristics of biodegradable polymers, viz, poly lactide-co-glycolide (PLGA) and polycaprolactone (PCL), to prepare sustained-release injectable nanoparticles (NPs) of bone morphogenetic protein-2 (BMP-2) for the repair of alveolar bone defects in rabbits. The influence of formulation parameters on the functional characteristics of the prepared NPs was studied to develop a new noninvasive injectable recombinant human BMP-2 (rhBMP-2) containing grafting material for the repair of alveolar bone clefts. BMP-2 NPs were prepared using a water-in-oil-in-water double-emulsion solvent evaporation/extraction method. The influence of molar ratio of PLGA to PCL on a suitable particle size, encapsulation efficiency, and sustained drug release was studied. Critical size alveolar defects were created in the maxilla of 24 New Zealand rabbits divided into three groups, one of them treated with 5 μg/kg of rhBMP-2 NP formulations. The results found that NPs formula prepared using blend of PLGA and PCL in 4:2 (w/w) ratio showed the best sustained-release pattern with lower initial burst, and showed up to 62.7% yield, 64.5% encapsulation efficiency, 127 nm size, and more than 90% in vitro release. So, this formula was selected for scanning electron microscope examination and in vivo evaluation. Histomorphometric analysis showed 78% trabecular bone fill, mostly mature bone in the defects treated with rhBMP-2 in NPs within 6 weeks. The prepared NPs prolonged the release and the residence time of rhBMP-2 in rabbits, which led to the formation of adequate bone in critical size alveolar bone defects in 6 weeks. This noninvasive method has application for the primary restoration of alveolar bone defects.

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Sigma-Aldrich
Dichloromethane, suitable for HPLC, ≥99.9%, contains 40-150 ppm amylene as stabilizer
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100 μg
Estimated to ship on March 22, 2025
A recombinant, preservative-free antibody is available for your target. Try ZRB1515
$484.00
Supelco
Dichloromethane, ≥99.9%
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SKUPack SizeAvailabilityPriceQuantity
100 μg
Estimated to ship on March 22, 2025
A recombinant, preservative-free antibody is available for your target. Try ZRB1515
$484.00
Sigma-Aldrich
Dichloromethane, anhydrous, ≥99.8%, contains 40-150 ppm amylene as stabilizer
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SKUPack SizeAvailabilityPriceQuantity
100 μg
Estimated to ship on March 22, 2025
A recombinant, preservative-free antibody is available for your target. Try ZRB1515
$484.00
Supelco
Dichloromethane solution, contains 10 % (v/v) methanol
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SKUPack SizeAvailabilityPriceQuantity
100 μg
Estimated to ship on March 22, 2025
A recombinant, preservative-free antibody is available for your target. Try ZRB1515
$484.00
Sigma-Aldrich
Dichloromethane, JIS special grade, ≥99.0%
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SKUPack SizeAvailabilityPriceQuantity
100 μg
Estimated to ship on March 22, 2025
A recombinant, preservative-free antibody is available for your target. Try ZRB1515
$484.00
Sigma-Aldrich
Dichloromethane, SAJ first grade, ≥99.0%
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SKUPack SizeAvailabilityPriceQuantity
100 μg
Estimated to ship on March 22, 2025
A recombinant, preservative-free antibody is available for your target. Try ZRB1515
$484.00