Percutaneous Sampling of Local Biomolecule Gradients Across Coronary Artery Atherosclerotic Plaques

Nick E.J. West, Joseph P. Corrigan, Richard H.G. Owen, Stephen P. Hoole, Adam J. Brown, Stephen Blatcher, Andrew C. Newby

Research output: Contribution to journalArticleResearchpeer-review

3 Citations (Scopus)


A percutaneous catheter device, the Liquid Biopsy System, was developed to sample the unstirred boundary layer of blood upstream and downstream of intact and disrupted human coronary atherosclerotic plaques. Using multiplexed proximity extension assays, release of 20 biomolecules was simultaneously detected in samples taken across plaques before balloon angioplasty, including the soluble form of the endothelial lectin-like oxidized LDL receptor. Additional biomolecules, including matrix metalloproteinase-12, were released after plaque disruption with angioplasty. These experiments demonstrate the power of the Liquid Biopsy System to yield new scientific insights and its ultimate potential to generate new biomarkers and surrogate endpoints for clinical trials.

Original languageEnglish
Pages (from-to)646-654
Number of pages9
JournalJACC: Basic to Translational Science
Issue number6
Publication statusPublished - 1 Dec 2017
Externally publishedYes


  • biomolecule release
  • coronary atherosclerosis
  • inflammation
  • vulnerable plaque

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