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Smartphone-enabled optofluidic exosome diagnostic for concussion recovery.


ABSTRACT: A major impediment to improving the treatment of concussion is our current inability to identify patients that will experience persistent problems after the injury. Recently, brain-derived exosomes, which cross the blood-brain barrier and circulate following injury, have shown great potential as a noninvasive biomarker of brain recovery. However, clinical use of exosomes has been constrained by their small size (30-100?nm) and the extensive sample preparation (>24?hr) needed for traditional exosome measurements. To address these challenges, we developed a smartphone-enabled optofluidic platform to measure brain-derived exosomes. Sample-to-answer on our chip is 1?hour, 10x faster than conventional techniques. The key innovation is an optofluidic device that can detect enzyme amplified exosome biomarkers, and is read out using a smartphone camera. Using this approach, we detected and profiled GluR2+ exosomes in the post-injury state using both in vitro and murine models of concussion.

SUBMITTER: Ko J 

PROVIDER: S-EPMC4976377 | biostudies-literature | 2016 Aug

REPOSITORIES: biostudies-literature

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Smartphone-enabled optofluidic exosome diagnostic for concussion recovery.

Ko Jina J   Hemphill Matthew A MA   Gabrieli David D   Wu Leon L   Yelleswarapu Venkata V   Lawrence Gladys G   Pennycooke Wesley W   Singh Anup A   Meaney Dave F DF   Issadore David D  

Scientific reports 20160808


A major impediment to improving the treatment of concussion is our current inability to identify patients that will experience persistent problems after the injury. Recently, brain-derived exosomes, which cross the blood-brain barrier and circulate following injury, have shown great potential as a noninvasive biomarker of brain recovery. However, clinical use of exosomes has been constrained by their small size (30-100 nm) and the extensive sample preparation (>24 hr) needed for traditional exos  ...[more]

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