Bioengineered H-Ferritin Nanocages for Quantitative Imaging of Vulnerable Plaques in Atherosclerosis

ACS Nano
Minmin LiangXiyun Yan

Abstract

Inflammation and calcification concomitantly drive atherosclerotic plaque progression and rupture and are the compelling targets for identifying plaque vulnerability. However, current imaging modalities for vulnerable atherosclerotic plaques are often limited by inadequate specificity and sensitivity. Here, we show that natural H-ferritin nanocages radiolabeled with technetium-99m (99mTc-HFn) can identify and accurately localize macrophage-rich, atherosclerotic plaques in living mice using combined SPECT and CT. Focal 99mTc-HFn uptake was observed in the atherosclerotic plaques with multiple high-risk features of macrophage infiltration, active calcification, positive remodeling, and necrosis on histology and in early active ongoing lesions with intense macrophage infiltration. The uptake of 99mTc-HFn in plaques enabled quantitative measuring of the dynamic changes of inflammation during plaque progression and anti-inflammation treatment. This strategy lays the foundation of using bioengineered endogenous human ferritin nanocages for the identification of vulnerable and early active plaques as well as potential assessment of anti-inflammation therapy.

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Citations

Jan 12, 2021·Advanced Drug Delivery Reviews·Jun ChenHo-Wook Jun
Jan 26, 2021·Chemical Society Reviews·Juan PellicoRafael T M de Rosales
Apr 7, 2021·Wiley Interdisciplinary Reviews. Nanomedicine and Nanobiotechnology·Tanvi Sushil Kaku, Sierin Lim
Aug 21, 2021·Accounts of Chemical Research·Ningning SongMinmin Liang
Sep 10, 2021·Nature Protocols·Jianlin ZhangMinmin Liang

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