Label-free chemical imaging flow cytometry by high-speed multicolor stimulated Raman scattering.
cancer cells
imaging flow cytometry
metabolite imaging
microalgae
stimulated Raman scattering
Journal
Proceedings of the National Academy of Sciences of the United States of America
ISSN: 1091-6490
Titre abrégé: Proc Natl Acad Sci U S A
Pays: United States
ID NLM: 7505876
Informations de publication
Date de publication:
06 08 2019
06 08 2019
Historique:
pubmed:
22
7
2019
medline:
27
3
2020
entrez:
21
7
2019
Statut:
ppublish
Résumé
Combining the strength of flow cytometry with fluorescence imaging and digital image analysis, imaging flow cytometry is a powerful tool in diverse fields including cancer biology, immunology, drug discovery, microbiology, and metabolic engineering. It enables measurements and statistical analyses of chemical, structural, and morphological phenotypes of numerous living cells to provide systematic insights into biological processes. However, its utility is constrained by its requirement of fluorescent labeling for phenotyping. Here we present label-free chemical imaging flow cytometry to overcome the issue. It builds on a pulse pair-resolved wavelength-switchable Stokes laser for the fastest-to-date multicolor stimulated Raman scattering (SRS) microscopy of fast-flowing cells on a 3D acoustic focusing microfluidic chip, enabling an unprecedented throughput of up to ∼140 cells/s. To show its broad utility, we use the SRS imaging flow cytometry with the aid of deep learning to study the metabolic heterogeneity of microalgal cells and perform marker-free cancer detection in blood.
Identifiants
pubmed: 31324741
pii: 1902322116
doi: 10.1073/pnas.1902322116
pmc: PMC6690022
doi:
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
15842-15848Informations de copyright
Copyright © 2019 the Author(s). Published by PNAS.
Déclaration de conflit d'intérêts
Conflict of interest statement: Y.O., Y.S., Y.W., and K.G. are inventors of a patent application covering SRS imaging with a wavelength-switched laser. All other authors declare no conflict of interest.
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