Affinity depletion of albumin from human cerebrospinal fluid using Cibacron-blue-3G-A-derivatized photopatterned copolymer in a microfluidic device.
In the context of proteomic research, affinity separations for the prefractionation of complex mixtures, such as cell lysates or human tissues, have become increasingly important. Microfluidic devices have shown significant potential to achieve fast analysis and low sample consumption. Here, we demonstrate the use of a microfluidic device to achieve affinity capture of albumin from human cerebrospinal fluid. Traditional photolithography and wet etching techniques were used to fabricate devices from borosilicate glass wafers. Monolithic porous polymer was prepared in a microfluidic channel by photopolymerization of glycidyl methacrylate and trimethylolpropane trimethacrylate. After derivatization with Cibacron-blue-3G-A, the modified polymer was used to achieve affinity capture of lysozyme and human albumin. Both fluorescence detection and matrix-assisted laser desorption ionization time of flight mass spectrometry were used to validate the results.[1]References
- Affinity depletion of albumin from human cerebrospinal fluid using Cibacron-blue-3G-A-derivatized photopatterned copolymer in a microfluidic device. Li, C., Lee, K.H. Anal. Biochem. (2004) [Pubmed]
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