ArticleFrontiers in cardiovascular medicine2025
Untensed fibronectin fibers: a novel hallmark of microthrombi.
Article in Frontiers in cardiovascular medicine, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
1 citing paper in PubMed.
- Fibronectin's tensional state as a mechanical signature of fibrotic extracellular matrix in idiopathic pulmonary fibrosis models.Matrix biology plus · 2026Article
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5 authors.
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Abstract
Background: Myocardial Infarction with Non-Obstructive Coronary Arteries (MINOCA) accounts for up to 15% of acute Myocardial Infarction (MI) cases and presents significant diagnostic and therapeutic challenges. The specific targeting of microthrombi involved in microthrombi-induced MINOCA with molecule-specific precision has been challenging due to their omnipresence in the bloodstream, highlighting the need for novel biomarkers and imaging strategies. Fibronectin, one of these omnipresent extracellular matrix (ECM) proteins, exists in distinct physical states in healthy versus diseased tissues, presenting stretched versus untensed fibers, which may serve as potential diagnostic and therapeutic targets. Methods: The peptide FnBPA5, a highly specific probe that binds selectively to untensed fibronectin fibers, as its multivalent binding motif is destroyed upon fiber stretching, was employed here to assess fibronectin's fiber tension in microthrombi before and after the onset of MINOCA in a pig model of autologous microthrombi-induced MINOCA. Results: Loss of fibronectin fiber tension was identified here as a novel key feature of microthrombi in a pig model of autologous microthrombi-induced MINOCA, whereas fibronectin fibers in the surrounding healthy myocardium remained highly stretched. FnBPA5 can thus effectively visualizes fibronectin's physical signature, thereby distinguishing microthrombi from the surrounding healthy tissue. Conclusion: These findings underscore FnBPA5's unique capacity to discriminate not merely the presence of an abundant ECM molecule within a thrombus, but its distinct physical conformation. FnBPA5 enables the selective detection of microthrombi in coronary arteries by targeting untensed fibronectin fibers, a novel mechanical biomarker of microthrombi. Targeting a protein's physical state with high specificity makes FnBPA5 a promising tool for advanced microthrombi detection and for mechano-therapeutic strategies involving the targeted delivery of therapeutic agents.
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