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In vivo photoacoustic imaging and analysis of the vulnerability of atherosclerotic plaque. ( A - G ) Ex vivo distribution of <t>HMCN@Cy5.5</t> , Scr-HMCN@Cy5.5 , and OPN-HMCN@Cy5.5 in various organs—specifically the aorta ( B ), heart ( C ), liver ( D ), spleen ( E ), lung ( F ), and kidney ( G )—from apoE −/− mice at 0, 6, 12, and 24 h post-intravenous injection (n = 3). ( H ) Confocal images demonstrate the colocalization of OPN with CY5.5-labeled nanoparticles in aortic roots (n = 6, scale bars, 200 μm). ( I ) Quantitative analysis of the relative MFI of OPN and CY5.5 in different treatment groups. ( J , K ) Photoacoustic images and quantitative analysis of signal intensities of atherosclerotic plaque in carotid arteries of both healthy and atherosclerosis mice (n = 3). For each animal, longitudinal PA imaging was performed on the same carotid artery at predefined anatomical landmarks across different time points. Photoacoustic images were acquired with depth calibration based on acoustic time-of-flight measurements, converting ultrasound echo delay into depth using the predefined sound velocity in soft tissue. A calibrated depth scale bar is shown in each image, with an effective imaging depth of approximately 7 mm. ( L , M ) Pathological staining of atherosclerotic plaques in the carotid artery and aortic arch includes ORO and Masson staining (scale bar = 200 μm), as well as α -SMA, and CD68 fluorescent staining (scale bar = 100 μm each). ( N - Q ) The statistical analysis of ( N ) ORO staining (namely the percentage of LD area), ( O ) Masson staining (namely the percentage of collagen fiber area), ( P ) α -SMA fluorescent staining (namely the percentage of smooth muscle cell area) and ( Q ) CD68 fluorescent staining (namely the percentage of macrophage-derived foam cell area). ( R ) Vulnerability scores of aortic arch and carotid artery plaques. ∗ P < 0.05, ∗∗ P < 0.01, and ∗∗∗∗ P < 0.0001.
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In vivo photoacoustic imaging and analysis of the vulnerability of atherosclerotic plaque. ( A - G ) Ex vivo distribution of <t>HMCN@Cy5.5</t> , Scr-HMCN@Cy5.5 , and OPN-HMCN@Cy5.5 in various organs—specifically the aorta ( B ), heart ( C ), liver ( D ), spleen ( E ), lung ( F ), and kidney ( G )—from apoE −/− mice at 0, 6, 12, and 24 h post-intravenous injection (n = 3). ( H ) Confocal images demonstrate the colocalization of OPN with CY5.5-labeled nanoparticles in aortic roots (n = 6, scale bars, 200 μm). ( I ) Quantitative analysis of the relative MFI of OPN and CY5.5 in different treatment groups. ( J , K ) Photoacoustic images and quantitative analysis of signal intensities of atherosclerotic plaque in carotid arteries of both healthy and atherosclerosis mice (n = 3). For each animal, longitudinal PA imaging was performed on the same carotid artery at predefined anatomical landmarks across different time points. Photoacoustic images were acquired with depth calibration based on acoustic time-of-flight measurements, converting ultrasound echo delay into depth using the predefined sound velocity in soft tissue. A calibrated depth scale bar is shown in each image, with an effective imaging depth of approximately 7 mm. ( L , M ) Pathological staining of atherosclerotic plaques in the carotid artery and aortic arch includes ORO and Masson staining (scale bar = 200 μm), as well as α -SMA, and CD68 fluorescent staining (scale bar = 100 μm each). ( N - Q ) The statistical analysis of ( N ) ORO staining (namely the percentage of LD area), ( O ) Masson staining (namely the percentage of collagen fiber area), ( P ) α -SMA fluorescent staining (namely the percentage of smooth muscle cell area) and ( Q ) CD68 fluorescent staining (namely the percentage of macrophage-derived foam cell area). ( R ) Vulnerability scores of aortic arch and carotid artery plaques. ∗ P < 0.05, ∗∗ P < 0.01, and ∗∗∗∗ P < 0.0001.
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In vivo photoacoustic imaging and analysis of the vulnerability of atherosclerotic plaque. ( A - G ) Ex vivo distribution of <t>HMCN@Cy5.5</t> , Scr-HMCN@Cy5.5 , and OPN-HMCN@Cy5.5 in various organs—specifically the aorta ( B ), heart ( C ), liver ( D ), spleen ( E ), lung ( F ), and kidney ( G )—from apoE −/− mice at 0, 6, 12, and 24 h post-intravenous injection (n = 3). ( H ) Confocal images demonstrate the colocalization of OPN with CY5.5-labeled nanoparticles in aortic roots (n = 6, scale bars, 200 μm). ( I ) Quantitative analysis of the relative MFI of OPN and CY5.5 in different treatment groups. ( J , K ) Photoacoustic images and quantitative analysis of signal intensities of atherosclerotic plaque in carotid arteries of both healthy and atherosclerosis mice (n = 3). For each animal, longitudinal PA imaging was performed on the same carotid artery at predefined anatomical landmarks across different time points. Photoacoustic images were acquired with depth calibration based on acoustic time-of-flight measurements, converting ultrasound echo delay into depth using the predefined sound velocity in soft tissue. A calibrated depth scale bar is shown in each image, with an effective imaging depth of approximately 7 mm. ( L , M ) Pathological staining of atherosclerotic plaques in the carotid artery and aortic arch includes ORO and Masson staining (scale bar = 200 μm), as well as α -SMA, and CD68 fluorescent staining (scale bar = 100 μm each). ( N - Q ) The statistical analysis of ( N ) ORO staining (namely the percentage of LD area), ( O ) Masson staining (namely the percentage of collagen fiber area), ( P ) α -SMA fluorescent staining (namely the percentage of smooth muscle cell area) and ( Q ) CD68 fluorescent staining (namely the percentage of macrophage-derived foam cell area). ( R ) Vulnerability scores of aortic arch and carotid artery plaques. ∗ P < 0.05, ∗∗ P < 0.01, and ∗∗∗∗ P < 0.0001.
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In vivo photoacoustic imaging and analysis of the vulnerability of atherosclerotic plaque. ( A - G ) Ex vivo distribution of <t>HMCN@Cy5.5</t> , Scr-HMCN@Cy5.5 , and OPN-HMCN@Cy5.5 in various organs—specifically the aorta ( B ), heart ( C ), liver ( D ), spleen ( E ), lung ( F ), and kidney ( G )—from apoE −/− mice at 0, 6, 12, and 24 h post-intravenous injection (n = 3). ( H ) Confocal images demonstrate the colocalization of OPN with CY5.5-labeled nanoparticles in aortic roots (n = 6, scale bars, 200 μm). ( I ) Quantitative analysis of the relative MFI of OPN and CY5.5 in different treatment groups. ( J , K ) Photoacoustic images and quantitative analysis of signal intensities of atherosclerotic plaque in carotid arteries of both healthy and atherosclerosis mice (n = 3). For each animal, longitudinal PA imaging was performed on the same carotid artery at predefined anatomical landmarks across different time points. Photoacoustic images were acquired with depth calibration based on acoustic time-of-flight measurements, converting ultrasound echo delay into depth using the predefined sound velocity in soft tissue. A calibrated depth scale bar is shown in each image, with an effective imaging depth of approximately 7 mm. ( L , M ) Pathological staining of atherosclerotic plaques in the carotid artery and aortic arch includes ORO and Masson staining (scale bar = 200 μm), as well as α -SMA, and CD68 fluorescent staining (scale bar = 100 μm each). ( N - Q ) The statistical analysis of ( N ) ORO staining (namely the percentage of LD area), ( O ) Masson staining (namely the percentage of collagen fiber area), ( P ) α -SMA fluorescent staining (namely the percentage of smooth muscle cell area) and ( Q ) CD68 fluorescent staining (namely the percentage of macrophage-derived foam cell area). ( R ) Vulnerability scores of aortic arch and carotid artery plaques. ∗ P < 0.05, ∗∗ P < 0.01, and ∗∗∗∗ P < 0.0001.
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In vivo photoacoustic imaging and analysis of the vulnerability of atherosclerotic plaque. ( A - G ) Ex vivo distribution of <t>HMCN@Cy5.5</t> , Scr-HMCN@Cy5.5 , and OPN-HMCN@Cy5.5 in various organs—specifically the aorta ( B ), heart ( C ), liver ( D ), spleen ( E ), lung ( F ), and kidney ( G )—from apoE −/− mice at 0, 6, 12, and 24 h post-intravenous injection (n = 3). ( H ) Confocal images demonstrate the colocalization of OPN with CY5.5-labeled nanoparticles in aortic roots (n = 6, scale bars, 200 μm). ( I ) Quantitative analysis of the relative MFI of OPN and CY5.5 in different treatment groups. ( J , K ) Photoacoustic images and quantitative analysis of signal intensities of atherosclerotic plaque in carotid arteries of both healthy and atherosclerosis mice (n = 3). For each animal, longitudinal PA imaging was performed on the same carotid artery at predefined anatomical landmarks across different time points. Photoacoustic images were acquired with depth calibration based on acoustic time-of-flight measurements, converting ultrasound echo delay into depth using the predefined sound velocity in soft tissue. A calibrated depth scale bar is shown in each image, with an effective imaging depth of approximately 7 mm. ( L , M ) Pathological staining of atherosclerotic plaques in the carotid artery and aortic arch includes ORO and Masson staining (scale bar = 200 μm), as well as α -SMA, and CD68 fluorescent staining (scale bar = 100 μm each). ( N - Q ) The statistical analysis of ( N ) ORO staining (namely the percentage of LD area), ( O ) Masson staining (namely the percentage of collagen fiber area), ( P ) α -SMA fluorescent staining (namely the percentage of smooth muscle cell area) and ( Q ) CD68 fluorescent staining (namely the percentage of macrophage-derived foam cell area). ( R ) Vulnerability scores of aortic arch and carotid artery plaques. ∗ P < 0.05, ∗∗ P < 0.01, and ∗∗∗∗ P < 0.0001.
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Image Search Results


In vivo photoacoustic imaging and analysis of the vulnerability of atherosclerotic plaque. ( A - G ) Ex vivo distribution of HMCN@Cy5.5 , Scr-HMCN@Cy5.5 , and OPN-HMCN@Cy5.5 in various organs—specifically the aorta ( B ), heart ( C ), liver ( D ), spleen ( E ), lung ( F ), and kidney ( G )—from apoE −/− mice at 0, 6, 12, and 24 h post-intravenous injection (n = 3). ( H ) Confocal images demonstrate the colocalization of OPN with CY5.5-labeled nanoparticles in aortic roots (n = 6, scale bars, 200 μm). ( I ) Quantitative analysis of the relative MFI of OPN and CY5.5 in different treatment groups. ( J , K ) Photoacoustic images and quantitative analysis of signal intensities of atherosclerotic plaque in carotid arteries of both healthy and atherosclerosis mice (n = 3). For each animal, longitudinal PA imaging was performed on the same carotid artery at predefined anatomical landmarks across different time points. Photoacoustic images were acquired with depth calibration based on acoustic time-of-flight measurements, converting ultrasound echo delay into depth using the predefined sound velocity in soft tissue. A calibrated depth scale bar is shown in each image, with an effective imaging depth of approximately 7 mm. ( L , M ) Pathological staining of atherosclerotic plaques in the carotid artery and aortic arch includes ORO and Masson staining (scale bar = 200 μm), as well as α -SMA, and CD68 fluorescent staining (scale bar = 100 μm each). ( N - Q ) The statistical analysis of ( N ) ORO staining (namely the percentage of LD area), ( O ) Masson staining (namely the percentage of collagen fiber area), ( P ) α -SMA fluorescent staining (namely the percentage of smooth muscle cell area) and ( Q ) CD68 fluorescent staining (namely the percentage of macrophage-derived foam cell area). ( R ) Vulnerability scores of aortic arch and carotid artery plaques. ∗ P < 0.05, ∗∗ P < 0.01, and ∗∗∗∗ P < 0.0001.

Journal: Bioactive Materials

Article Title: A foam cell-targeted lipophagy restoration strategy stabilizes vulnerable atherosclerotic plaques

doi: 10.1016/j.bioactmat.2026.02.041

Figure Lengend Snippet: In vivo photoacoustic imaging and analysis of the vulnerability of atherosclerotic plaque. ( A - G ) Ex vivo distribution of HMCN@Cy5.5 , Scr-HMCN@Cy5.5 , and OPN-HMCN@Cy5.5 in various organs—specifically the aorta ( B ), heart ( C ), liver ( D ), spleen ( E ), lung ( F ), and kidney ( G )—from apoE −/− mice at 0, 6, 12, and 24 h post-intravenous injection (n = 3). ( H ) Confocal images demonstrate the colocalization of OPN with CY5.5-labeled nanoparticles in aortic roots (n = 6, scale bars, 200 μm). ( I ) Quantitative analysis of the relative MFI of OPN and CY5.5 in different treatment groups. ( J , K ) Photoacoustic images and quantitative analysis of signal intensities of atherosclerotic plaque in carotid arteries of both healthy and atherosclerosis mice (n = 3). For each animal, longitudinal PA imaging was performed on the same carotid artery at predefined anatomical landmarks across different time points. Photoacoustic images were acquired with depth calibration based on acoustic time-of-flight measurements, converting ultrasound echo delay into depth using the predefined sound velocity in soft tissue. A calibrated depth scale bar is shown in each image, with an effective imaging depth of approximately 7 mm. ( L , M ) Pathological staining of atherosclerotic plaques in the carotid artery and aortic arch includes ORO and Masson staining (scale bar = 200 μm), as well as α -SMA, and CD68 fluorescent staining (scale bar = 100 μm each). ( N - Q ) The statistical analysis of ( N ) ORO staining (namely the percentage of LD area), ( O ) Masson staining (namely the percentage of collagen fiber area), ( P ) α -SMA fluorescent staining (namely the percentage of smooth muscle cell area) and ( Q ) CD68 fluorescent staining (namely the percentage of macrophage-derived foam cell area). ( R ) Vulnerability scores of aortic arch and carotid artery plaques. ∗ P < 0.05, ∗∗ P < 0.01, and ∗∗∗∗ P < 0.0001.

Article Snippet: PEG-NH2 and Cy5.5 were obtained from MedChemExpress, Shanghai, China.

Techniques: In Vivo, Imaging, Ex Vivo, Injection, Labeling, Staining, Derivative Assay