title: Rapid ratiometric biomarker detection with topically applied SERS nanoparticles.
abstract: Multiplexed surface-enhanced Raman scattering (SERS) nanoparticles (NPs) offer the potential for rapid molecular phenotyping of tissues, thereby enabling accurate disease detection as well as patient stratification to guide personalized therapies or to monitor treatment outcomes. The clinical success of molecular diagnostics based on SERS NPs would be facilitated by the ability to accurately identify tissue biomarkers under time-constrained staining and detection conditions with a portable device.In vitro,ex vivoandin vivoexperiments were performed to optimize the technology and protocols for the rapid detection (0.1-s integration time) of multiple cell-surface biomarkers with a miniature fiber-optic spectral-detection probe following a brief (5 min) topical application of SERS NPs on tissues. Furthermore, we demonstrate that the simultaneous detection and ratiometric quantification of targeted and nontargeted NPs allows for an unambiguous assessment of molecular expression that is insensitive to nonspecific variations in NP concentrations.
authors.forename: Yu Winston
authors.initials: YW
authors.lastname: Wang
authors.forename: Altaz
authors.initials: A
authors.lastname: Khan
authors.forename: Madhura
authors.initials: M
authors.lastname: Som
authors.forename: Danni
authors.initials: D
authors.lastname: Wang
authors.forename: Ye
authors.initials: Y
authors.lastname: Chen
authors.forename: Steven Y
authors.initials: SY
authors.lastname: Leigh
authors.forename: Daphne
authors.initials: D
authors.lastname: Meza
authors.forename: Patrick Z
authors.initials: PZ
authors.lastname: McVeigh
authors.forename: Brian C
authors.initials: BC
authors.lastname: Wilson
authors.forename: Jonathan T C
authors.initials: JT
authors.lastname: Liu