Determining the protein drug release characteristics and cell adhesion to a PLLA or PLGA biodegradable polymer membrane.

Determining the protein drug release characteristics and cell adhesion to a PLLA or PLGA biodegradable polymer membrane.
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确定蛋白质药物释放特性以及细胞对 PLLA 或 PLGA 可生物降解聚合物膜的粘附。

DOI:
10.1002/jbm.a.32654
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发表时间:
2010
期刊:
Journal of biomedical materials research. Part A
影响因子:
--
通讯作者:
GardellaJr,JosephA
GardellaJr,JosephA
中科院分区:
--
文献类型:
--
作者:
Burns,SarahA;Hard,Robert;HicksJr,WesleyL;Bright,FrankV;Cohan,David;Sigurdson,Lynn;GardellaJr,JosephA

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可生物降解的聚合物对于开发受控的蛋白质药物递送平台是令人感兴趣的。在这项研究中,两种聚(α-羟基)酯与表面活性剂稳定剂Aerosol-OT一起配制,以包裹蛋白质角质细胞生长因子(KGF),用于控制释放KGF参与许多关键的生物过程,最显着的是上皮生长和修复。测定引起体外生物反应的KGF浓度(最佳10 ng/mL),并与两种可生物降解聚合物膜制剂的KGF释放进行比较。每种聚合物制剂释放生物学相关水平,10 ng/mL的活性KGF,尽管具有不同的时间释放动力学。PLGA/AOT/KGF复合膜降解120 h后,KGF释放速率明显快于PLLA/AOT/KGF复合膜。细胞接种试验表明,两种聚合物基质,当配制AOT,持续细胞生长。使用飞行时间二次离子质谱(西姆斯)来表征AOT和KGF通过聚合物膜的分布。© 2010 Wiley Periodicals,Inc.生物医学材料研究杂志,2010年
Biodegradable polymers are of interest for developing controlled protein drug delivery platforms. In this study, two poly (α‐hydroxy) esters were formulated with Aerosol‐OT, a surfactant stabilizer, to encapsulate the protein keratinocyte growth factor (KGF) for controlled release KGF is involved in a number of crucial biologic processes, most notably epithelial growth and repair. The concentration of KGF that caused a biological responsein vitrowas determined (optimally 10 ng/mL) and compared with the release of KGF from the two biodegradable polymer membrane formulations. Each polymer formulation released biologically relevant levels, 10 ng/mL of active KGF, although with different times release kinetics. The membrane composed of PLGA/AOT/KGF exhibited a faster release rate of KGF into solution after 120 h of degradation time than the release rate of the PLLA/AOT/KGF matrices. Cell seeding assays showed that both polymer matrices, when formulated with AOT, sustained cell growth. Time of Flight Secondary Ion Mass Spectrometry (ToF‐SIMS) was used to characterize the distribution of AOT and KGF through the polymer membrane. © 2010 Wiley Periodicals, Inc. J Biomed Mater Res, 2010
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