Systematic evaluation of extraction methods for multiplatform-based metabotyping: application to the Fasciola hepatica metabolome.
Anal Chem 2012;
84:6963-72. [PMID:
22799605 PMCID:
PMC3423827 DOI:
10.1021/ac300586m]
[Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
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Combining data from multiple analytical platforms is
essential
for comprehensive study of the molecular phenotype (metabotype) of
a given biological sample. The metabolite profiles generated are intrinsically
dependent on the analytical platforms, each requiring optimization
of instrumental parameters, separation conditions, and sample extraction
to deliver maximal biological information. An in-depth evaluation
of extraction protocols for characterizing the metabolome of the hepatobiliary
fluke Fasciola hepatica, using ultra
performance liquid chromatography and capillary electrophoresis coupled
with mass spectroscopy is presented. The spectrometric methods were
characterized by performance, and metrics of merit were established,
including precision, mass accuracy, selectivity, sensitivity, and
platform stability. Although a core group of molecules was common
to all methods, each platform contributed a unique set, whereby 142
metabolites out of 14,724 features were identified. A mixture design
revealed that the chloroform:methanol:water proportion of 15:59:26
was globally the best composition for metabolite extraction across
UPLC-MS and CE-MS platforms accommodating different columns and ionization
modes. Despite the general assumption of the necessity of platform-adapted
protocols for achieving effective metabotype characterization, we
show that an appropriately designed single extraction procedure is
able to fit the requirements of all technologies. This may constitute
a paradigm shift in developing efficient protocols for high-throughput
metabolite profiling with more-general analytical applicability.
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