Microcampionamento nell'analisi mirata delle proteine basate sulla spettrometria di massa di proteine a bassa abbondanza
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January 13, 2023
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Viene presentato un protocollo per la determinazione di biomarcatori a bassa abbondanza da campioni di siero essiccati esemplificati con il peptide di rilascio della progastrina biomarcatore (ProGRP). Le sfere magnetiche rivestite di anticorpi sono utilizzate per la pulizia selettiva e l'arricchimento di un peptide ProGRP proteotipico. Il peptide catturato viene successivamente analizzato mediante cromatografia liquida-spettrometria di massa tandem.
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Ngo, H. B., Oulie, I., Reubsaet, L., Halvorsen, T. G. Microsampling in Targeted Mass Spectrometry-Based Protein Analysis of Low-Abundance Proteins. J. Vis. Exp. (191), e64473, doi:10.3791/64473 (2023).
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