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Optically Assisted Surface Functionalization for Protein Arraying in Aqueous Media
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DOI：10.1021/acs.langmuir.7b02965.png)
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Protein surface patterning is employed in a broad spectrum of applications ranging from protein micro array analysis to 2D cell organization. However, limitations arise because of the highly sensitive nature of proteins requiring careful handling to ensure their structural and functional integrity during the grafting process. Here, we describe a patterning protocol that keeps proteins in an aqueous environment during their immobilization, avoiding the loss of their biological activity. The procedure is based on the UV-mediated removal of polyethylene glycol self-assembled monolayers in a transparent microfluidic chamber, giving access to micrometric motifs of predefined geometries. Afterward, modified proteins can be grafted on the photopatterned domains. We also studied the influence of reactive oxygen species for a better understanding of the chemical mechanism involved in this process. Finally, as a proof of concept, a protein microarray was created with this process using cell-capturing antibodies to immobilize human blood cells, confirming the functionality of the arrayed proteins.
Keyword:
SELF-ASSEMBLED MONOLAYERS
ANTIBODY MICROARRAY PERFORMANCE
MONO LAYERS
FABRICATION
GLYCOL)
LIGHT
PHOTOOXIDATION
LITHOGRAPHY
ADDITIVES
GOLD
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期刊
IF:
3.9
论文数:
5.4W
被引数:
10.6W
机构
C
引用论文
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