Cited by 72Cholesterol and Lipid MetabolismAtherosclerosis and Cardiovascular DiseasesNanoparticle-Based Drug Delivery

Comparison of Synthetic High Density Lipoprotein (HDL) Contrast Agents for MR Imaging of Atherosclerosis

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Cormode, David P., Chandrasekar, Rohith, Delshad, Amanda, Briley-Saebo, Karen C., Calcagno, Claudia, Barazza, Alessandra, Mulder, Willem J. M., Fisher, Edward A. +1 more·2009·Bioconjugate Chemistry

Abstract

Determining arterial macrophage expression is an important goal in the molecular imaging of atherosclerosis. Here, we compare the efficacy of two synthetic, high density lipoprotein (HDL) based contrast agents for magnetic resonance imaging (MRI) of macrophage burden. Each form of HDL was labeled with gadolinium and rhodamine to allow MRI and fluorescence microscopy. Either the 37 or 18 amino acid peptide replaced the apolipoprotein A-I in these agents, which were termed 37pA-Gd or 18A-Gd. The diameters of 37pA-Gd and 18A-Gd are 7.6 and 8.0 nm, respectively, while the longitudinal relaxivities are 9.8 and 10.0 (mM s)(-1). 37pA has better lipid binding properties. In vitro tests with J774A.1 macrophages proved the particles possessed the functionality of HDL by eliciting cholesterol efflux and were taken up in a receptor-like fashion by the cells. Both agents produced enhancements in atherosclerotic plaques of apolipoprotein E knockout mice of approximately 90% (n = 7 per agent) and are macrophage specific as evidenced by confocal microscopy on aortic sections. The half-lives of 37pA-Gd and 18A-Gd are 2.6 and 2.1 h, respectively. Despite the more favorable lipid interactions of 37pA, both agents gave similar, excellent contrast for the detection of atherosclerotic macrophages using MRI.

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  • HDL can be modified by incorporating contrast labels such as Gd3+ in the phospholipid coating, allowing imaging of macrophages within atherosclerotic plaques.

    “HDL can be modified by incorporating contrast labels such as Gd3+ in the phospholipid coating. Such modifications allow the imaging of macrophages within atherosclerotic plaques136 (FIG. 5e).”

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Authors
Cormode, D. P., Chandrasekar, R., Delshad, A., Briley-Saebo, K. C., Calcagno, C., Barazza, A., Mulder, W. J. M., Fisher, E. A., & Fayad, Z. A.
Affiliations
New York University (US)
Corresponding author
  • Fisher, Edward A.
  • Fayad, Zahi A.
Venue
Bioconjugate Chemistry
Published
2009-04-20
Volume
20
Issue
5
Pages
937-943
ISSN
  • 1043-1802 (ISSN-L)
  • 1520-4812
OpenAlex
W2039685011
Cited by
72
References
31
Citations by year
2025: 2 · 2024: 1 · 2022: 1 · 2021: 3 · 2020: 4 · 2019: 5 · 2018: 1 · 2017: 3 · 2016: 7 · 2015: 2 · 2014: 1 · 2013: 6 · 2012: 13
FWCI
12.14
Type
journal article
Language
en
Open access
Locations
  • Bioconjugate Chemistry (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • Data Archiving and Networked Services (DANS) (submittedVersion)
  • Pure Amsterdam UMC (submittedVersion)
Funders
  • Technische Universiteit Eindhoven
  • National Institutes of Health
  • National Heart, Lung, and Blood Institute (HL78667, R01HL078667, R0I HL71021, R01HL071021)
  • National Cancer Institute (R24CA095823)
  • National Center for Research Resources (1 S10RR0 9145-01)
Topics
  • Health Sciences › Medicine › Surgery › Cholesterol and Lipid Metabolism
  • Life Sciences › Immunology and Microbiology › Immunology › Atherosclerosis and Cardiovascular Diseases
  • Physical Sciences › Materials Science › Biomaterials › Nanoparticle-Based Drug Delivery
Keywords
atherosclerosis, macrophage imaging, gadolinium-based contrast agents, apolipoprotein A-I mimetic, atherosclerotic plaque, ApoE-deficient mice, cholesterol efflux, receptor-mediated uptake, molecular imaging, relaxivity, tissue distribution
MeSH terms
Amino Acid Sequence, Animals, Biological Transport, Cell Line, Cholesterol, Contrast Media, Lipoproteins, HDL, Macrophages, Magnetic Resonance Imaging, Male, Molecular Sequence Data, Peptides, Microscopy, Confocal, Atherosclerosis, Mice, Rats

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