Conserved and Divergent Modulation of Calcification in Atherosclerosis and Aortic Valve Disease by Tissue Extracellular Vesicles

Abstract Background Fewer than 50% of patients develop calcification of both atherosclerotic plaques and aortic valves, implying differential pathogenesis. While circulating extracellular vesicles (EVs) act as biomarkers of cardiovascular diseases, tissue-entrapped EVs associate with early mineralization, but their contents, function, and contributions to disease remain unknown.Results Global proteomics of human carotid artery endarterectomies and calcified aortic valves from a total of 27 donors/patients revealed significant over-representation of proteins with vesicle-associated pathways/ontologies common to both diseases. We exploited enzymatic digestion, serial (ultra)centrifugation and OptiPrep density-gradient separation to isolate EV populations from diseased arteries and valves. Mass spectrometry found 22 EV marker proteins to be highly enriched in the four least-dense OptiPrep fractions while extracellular matrix proteins predominated in denser fractions, as confirmed by CD63 immunogold electron microscopy and nanoparticle tracking analysis. Proteomics and miRNA-sequencing of OptiPrep-enriched tissue EVs quantified 1,104 proteins and 123 miR cargoes linked to 5,182 target genes. Pathway networks of proteins and miR targets common to artery and valve tissue EVs revealed a shared regulation of Rho GTPase and MAPK intracellular signaling cascades. 179 proteins and 5 miRs were significantly altered between artery and valve EVs; multi-omics integration determined that EVs differentially modulated cellular contraction and p53-mediated transcriptional regulation in diseased vascular vs. valvular tissue.Conclusions Our findings delineate a strategy to isolate, purify, and study protein and RNA cargoes from EVs entrapped in fibrocalcific tissues. Multi-omics and network approaches implicated tissue-resident EVs in human cardiovascular disease..

Medienart:

Preprint

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

bioRxiv.org - (2024) vom: 23. Apr. Zur Gesamtaufnahme - year:2024

Sprache:

Englisch

Beteiligte Personen:

Blaser, Mark C. [VerfasserIn]
Buffolo, Fabrizio [VerfasserIn]
Halu, Arda [VerfasserIn]
Schlotter, Florian [VerfasserIn]
Higashi, Hideyuki [VerfasserIn]
Pantano, Lorena [VerfasserIn]
Saddic, Louis A. [VerfasserIn]
Atkins, Samantha K. [VerfasserIn]
Rogers, Maximillian A. [VerfasserIn]
Pham, Tan [VerfasserIn]
Shvartz, Eugenia [VerfasserIn]
Sukhova, Galina K [VerfasserIn]
Monticone, Silvia [VerfasserIn]
Camussi, Giovanni [VerfasserIn]
Body, Simon C. [VerfasserIn]
Muehlschlegel, Jochen D. [VerfasserIn]
Singh, Sasha A. [VerfasserIn]
Aikawa, Masanori [VerfasserIn]
Aikawa, Elena [VerfasserIn]

Links:

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Themen:

570
Biology

doi:

10.1101/2020.04.02.022525

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

XBI000843849