Skip to main page content
Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2014 Oct 3;845:53-61.
doi: 10.1016/j.aca.2014.06.012. Epub 2014 Jun 12.

Targeted Metabolomics in Cultured Cells and Tissues by Mass Spectrometry: Method Development and Validation

Affiliations

Targeted Metabolomics in Cultured Cells and Tissues by Mass Spectrometry: Method Development and Validation

Anas M Abdel Rahman et al. Anal Chim Acta. .

Abstract

Metabolomics is the identification and quantitation of small bio-molecules (metabolites) in biological samples under various environmental and genetic conditions. Mass spectrometry provides the unique opportunity for targeted identification and quantification of known metabolites by selective reaction monitoring (SRM). However, reproducibility of this approach depends on careful consideration of sample preparation, chemical classes, and stability of metabolites to be evaluated. Herein, we introduce and validate a targeted metabolite profiling workflow for cultured cells and tissues by liquid chromatography-triple quadrupole tandem mass spectrometry. The method requires a one-step extraction of water-soluble metabolites and targeted analysis of central metabolites that include glycolysis, amino acids, nucleotides, citric acid cycle, and the hexosamine biosynthetic pathway. The sensitivity, reproducibility and molecular stability of each targeted metabolite were assessed under experimental conditions. Quantitation of metabolites by peak area ratio was linear with a dilution over a 4 fold dynamic range with minimal deviation R(2)=0.98. Inter- and intra-day precision with cells and tissues had an average coefficient of variation <15% for cultured cell lines, and somewhat higher for mouse liver tissues. The method applied in triplicate measurements readily distinguished immortalized cells from malignant cells, as well as mouse littermates based on their hepatic metabolic profiles.

Keywords: Diagnostics; Mass spectrometry; Metabolism; Precision; Sensitivity.

Similar articles

See all similar articles

Cited by 16 articles

See all "Cited by" articles

Publication types

LinkOut - more resources

Feedback