Abstract
Rat brain proteomics is progressing gradually from gel-based approaches to gel-free systems and the emerging technique of MALDI imaging is making its mark on direct analysis of proteins in the brain sections. In this protocol chapter, we provide the details on the sample preparation methods for brain proteins analysis by mass spectrometry. Sample preparation methods include first grinding the brain and/or its regions in liquid nitrogen, followed by extracting proteins efficiently with various extraction buffers. The two protocols described here, are the modified TCA/acetone extraction method and extraction using Tris-buffered saline with addition of Tween 20. The soluble proteins obtained from the powdered brain samples can be directly analyzed after digestion with trypsin by gel-free approach to enhance the proteome coverage. Finally, we present a detailed protocol for protein identification in brain sections using the emerging technology of MALDI imaging.
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Masuo, Y. et al. (2011). Brain Proteomics: Sample Preparation Techniques for the Analysis of Rat Brain Samples Using Mass Spectrometry. In: Ivanov, A., Lazarev, A. (eds) Sample Preparation in Biological Mass Spectrometry. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-0828-0_11
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DOI: https://doi.org/10.1007/978-94-007-0828-0_11
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