Focused Ultrasound-enabled Brain Tumor Liquid Biopsy.

Abstract:

:Although blood-based liquid biopsies have emerged as a promising non-invasive method to detect biomarkers in various cancers, limited progress has been made for brain tumors. One major obstacle is the blood-brain barrier (BBB), which hinders efficient passage of tumor biomarkers into the peripheral circulation. The objective of this study was to determine whether FUS in combination with microbubbles can enhance the release of biomarkers from the brain tumor to the blood circulation. Two glioblastoma tumor models (U87 and GL261), developed by intracranial injection of respective enhanced green fluorescent protein (eGFP)-transduced glioblastoma cells, were treated by FUS in the presence of systemically injected microbubbles. Effect of FUS on plasma eGFP mRNA levels was determined using quantitative polymerase chain reaction. eGFP mRNA were only detectable in the FUS-treated U87 mice and undetectable in the untreated U87 mice (maximum cycle number set to 40). This finding was replicated in GL261 mice across three different acoustic pressures. The circulating levels of eGFP mRNA were 1,500-4,800 fold higher in the FUS-treated GL261 mice than that of the untreated mice for the three acoustic pressures. This study demonstrated the feasibility of FUS-enabled brain tumor liquid biopsies in two different murine glioma models across different acoustic pressures.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Zhu L,Cheng G,Ye D,Nazeri A,Yue Y,Liu W,Wang X,Dunn GP,Petti AA,Leuthardt EC,Chen H

doi

10.1038/s41598-018-24516-7

subject

Has Abstract

pub_date

2018-04-26 00:00:00

pages

6553

issue

1

issn

2045-2322

pii

10.1038/s41598-018-24516-7

journal_volume

8

pub_type

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