High-performance liquid chromatography as a technique to determine protein adsorption onto hydrophilic/hydrophobic surfaces

详细信息    查看全文

• 作者：Tongtong Huang^a ; ^b ; Karine Anselme^a ; Segolene Sarrailh^b ; ^c ; Arnaud Ponche^a ; ^{arnaud.ponche@uha.fr" class="auth_mail" title="E-mail the corresponding author}
• 关键词：HPLC ; Protein adsorption ; Kinetics ; Denaturation ; Aggregation
• 刊名：International Journal of Pharmaceutics
• 出版年：2016
• 出版时间：30 January 2016
• 年：2016
• 卷：497
• 期：1-2
• 页码：54-61
• 全文大小：1099 K

文摘

The purpose of this study is to evaluate the potential of simple high performance liquid chromatography (HPLC) setup for quantification of adsorbed proteins on various type of plane substrates with limited area (<3 cm²). Protein quantification was investigated with a liquid chromatography chain equipped with a size exclusion column or a reversed-phase column. By evaluating the validation of the method according to guidelines of the International Conference on Harmonization of Technical Requirements for Registration of Pharmaceuticals for Human Use (ICH), all the results obtained by HPLC were reliable. By simple adsorption test at the contact of hydrophilic (glass) and hydrophobic (polydimethylsiloxane: PDMS) surfaces, kinetics of adsorption were determined and amounts of adsorbed bovine serum albumin, myoglobin and lysozyme were obtained: as expected for each protein, the amount adsorbed at the plateau on glass (between 0.15 μg/cm² and 0.4 μg/cm²) is lower than for hydrophobic PDMS surfaces (between 0.45 μg/cm² and 0.8 μg/cm²). These results were consistent with bicinchoninic acid protein determination.

According to ICH guidelines, both Reversed Phase and Size Exclusion HPLC can be validated for quantification of adsorbed protein. However, we consider the size exclusion approach more interesting in this field because additional informations can be obtained for aggregative proteins. Indeed, monomer, dimer and oligomer of bovine serum albumin (BSA) were observed in the chromatogram. On increasing the temperature, we found a decrease of peak intensity of bovine serum albumin as well as the fraction of dimer and oligomer after contact with PDMS and glass surface. As the surface can act as a denaturation parameter, these informations can have a huge impact on the elucidation of the interfacial behavior of protein and in particular for aggregation processes in pharmaceutical applications.