Raman Microspectroscopy and Raman Imaging Reveal Biomarkers Specific for Thoracic Aortic Aneurysms
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General Medicine
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Aortic rupture and dissection are life-threatening complications of ascending thoracic aortic aneurysms (aTAAs), and risk assessment has been largely based on the monitoring of lumen size enlargement. Temporal changes in the extracellular matrix (ECM), which has a critical impact on aortic remodeling, are not routinely evaluated, and cardiovascular biomarkers do not exist to predict aTAA formation. Here, Raman microspectroscopy and Raman imaging are used to identify spectral biomarkers specific for aTAAs in mice and humans by multivariate data analysis (MVA). Multivariate curve resolution-alternating least-squares (MCR-ALS) combined with Lasso regression reveals elastic fiber-derived (Ce1) and collagen fiber-derived (Cc6) components that are significantly increased in aTAA lesions of murine and human aortic tissues. In particular, Cc6 detects changes in amino acid residues, including phenylalanine, tyrosine, tryptophan, cysteine, aspartate, and glutamate. Ce1 and Cc6 may serve as diagnostic Raman biomarkers that detect alterations of amino acids derived from aneurysm lesions.
Xie S, Zhu X, Han F, Wang S, Cui K, Xue J Lasers Med Sci. 2025; 40(1):116.
PMID: 39988624 PMC: 11847755. DOI: 10.1007/s10103-025-04315-z.
Liu H, Jiang H, Liu X, Wang X Chem Biomed Imaging. 2024; 1(9):767-784.
PMID: 39473839 PMC: 11504500. DOI: 10.1021/cbmi.3c00021.
Liu H, Jiang H, Liu X, Wang X Exploration (Beijing). 2024; 3(6):20230033.
PMID: 38264681 PMC: 10742219. DOI: 10.1002/EXP.20230033.
Animal Models, Pathogenesis, and Potential Treatment of Thoracic Aortic Aneurysm.
Wang Y, Panicker I, Anesi J, Sargisson O, Atchison B, Habenicht A Int J Mol Sci. 2024; 25(2).
PMID: 38255976 PMC: 10815651. DOI: 10.3390/ijms25020901.
Sigle M, Rohlfing A, Kenny M, Scheuermann S, Sun N, Graessner U Nat Commun. 2023; 14(1):5799.
PMID: 37726278 PMC: 10509269. DOI: 10.1038/s41467-023-41417-0.