Affibody-Indocyanine Green Based Contrast Agent for Photoacoustic and Fluorescence Molecular Imaging of B7-H3 Expression in Breast Cancer

被引：41

作者：

Bam, Rakesh ^{[1
]}

Laffey, Makenna ^{[1
]}

Nottberg, Katharine ^{[1
]}

Lown, Patrick S. ^{[2
]}

Hackel, Benjamin J. ^{[2
]}

Wilson, Katheryne E. ^{[1
]}

机构：

[1] Stanford Univ, Dept Radiol, Stanford, CA 94305 USA

[2] Univ Minnesota, Dept Chem Engn & Mat Sci, 421 Washington Ave SE, Minneapolis, MN 55455 USA

来源：

BIOCONJUGATE CHEMISTRY | 2019年 / 30卷 / 06期

关键词：

MAMMOGRAPHIC DENSITY; ULTRASOUND; MOUSE; ANTIBODIES; DISCOVERY; LIBRARIES; PROTEINS; RECEPTOR; TARGET; WOMEN;

D O I：

10.1021/acs.bioconjchem.9b00239

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

Spectroscopic photoacoustic (sPA) molecular imaging has high potential for identification of exogenous contrast agents targeted to specific markers. Antibody dye conjugates have recently been used extensively for preclinical sPA and other optical imaging modalities for highly specific molecular imaging of breast cancer. However, antibody-based agents suffer from long circulation times that limit image specificity. Here, the efficacy of a small protein scaffold, the affibody (ABY), conjugated to indocyanine green (ICG), a near-infrared fluorescence dye, as a targeted molecular imaging probe is demonstrated. In particular, B7-H3 (CD276), a cellular receptor expressed in breast cancer, was imaged via sPA and fluorescence molecular imaging to differentiate invasive tumors from normal glands in mice. Administration of ICG conjugated to an ABY specific to B7-H3 (ABY(B7-H3)-ICG) showed significantly higher signal in mammary tumors compared to normal glands of mice. ABY(B7-H3)-ICG is a compelling scaffold for molecular sPA imaging for breast cancer detection.

引用

页码：1677 / 1689

页数：13

共 60 条

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