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2017 ; 139
(11
): 3920-3929
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Categorizing Cells on the Basis of their Chemical Profiles: Progress in
Single-Cell Mass Spectrometry
#MMPMID28135079
Comi TJ
; Do TD
; Rubakhin SS
; Sweedler JV
J Am Chem Soc
2017[Mar]; 139
(11
): 3920-3929
PMID28135079
show ga
The chemical differences between individual cells within large cellular
populations provide unique information on organisms' homeostasis and the
development of diseased states. Even genetically identical cell lineages diverge
due to local microenvironments and stochastic processes. The minute sample
volumes and low abundance of some constituents in cells hinder our understanding
of cellular heterogeneity. Although amplification methods facilitate single-cell
genomics and transcriptomics, the characterization of metabolites and proteins
remains challenging both because of the lack of effective amplification
approaches and the wide diversity in cellular constituents. Mass spectrometry has
become an enabling technology for the investigation of individual cellular
metabolite profiles with its exquisite sensitivity, large dynamic range, and
ability to characterize hundreds to thousands of compounds. While advances in
instrumentation have improved figures of merit, acquiring measurements at high
throughput and sampling from large populations of cells are still not routine. In
this Perspective, we highlight the current trends and progress in
mass-spectrometry-based analysis of single cells, with a focus on the
technologies that will enable the next generation of single-cell measurements.