Super-SILAC mix for quantitative proteomics of human tumor tissue.

Geiger, Tamar; Cox, Juergen; Ostasiewicz, Pawel; Wisniewski, Jacek R; Mann, Matthias · Nat Methods · 2010

basic_science · Level V

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Abstract

We describe a method to accurately quantify human tumor proteomes by combining a mixture of five stable-isotope labeling by amino acids in cell culture (SILAC)-labeled cell lines with human carcinoma tissue. This generated hundreds of thousands of isotopically labeled peptides in appropriate amounts to serve as internal standards for mass spectrometry-based analysis. By decoupling the labeling from the measurement, this super-SILAC method broadens the scope of SILAC-based proteomics.

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