{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,15]],"date-time":"2026-10-15T00:31:14Z","timestamp":1792024274870,"version":"4.4.0"},"reference-count":48,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2022,11,25]],"date-time":"2022-11-25T00:00:00Z","timestamp":1669334400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100000274","name":"British Heart Foundation","doi-asserted-by":"publisher","award":["RG\/17\/2\/32808"],"award-info":[{"award-number":["RG\/17\/2\/32808"]}],"id":[{"id":"10.13039\/501100000274","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Aging Cell"],"published-print":{"date-parts":[[2023,2]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Vascular amyloidosis, caused when peptide monomers aggregate into insoluble amyloid, is a prevalent age\u2010associated pathology. Aortic medial amyloid (AMA) is the most common human amyloid and is composed of medin, a 50\u2010amino acid peptide. Emerging evidence has implicated extracellular vesicles (EVs) as mediators of pathological amyloid accumulation in the extracellular matrix (ECM). To determine the mechanisms of AMA formation with age, we explored the impact of vascular smooth muscle cell (VSMC) senescence, EV secretion, and ECM remodeling on medin accumulation. Medin was detected in EVs secreted from primary VSMCs. Small, round medin aggregates colocalized with EV markers in decellularized ECM in vitro and medin was shown on the surface of EVs deposited in the ECM. Decreasing EV secretion with an inhibitor attenuated aggregation and deposition of medin in the ECM. Medin accumulation in the aortic wall of human subjects was strongly correlated with age and VSMC senescence increased EV secretion, increased EV medin loading and triggered deposition of fibril\u2010like medin. Proteomic analysis showed VSMC senescence induced changes in EV cargo and ECM composition, which led to enhanced EV\u2010ECM binding and accelerated medin aggregation. Abundance of the proteoglycan, HSPG2, was increased in the senescent ECM and colocalized with EVs and medin. Isolated EVs selectively bound to HSPG2 in the ECM and its knock\u2010down decreased formation of fibril\u2010like medin structures. These data identify VSMC\u2010derived EVs and HSPG2 in the ECM as key mediators of medin accumulation, contributing to age\u2010associated AMA development.<\/jats:p>","DOI":"10.1111\/acel.13746","type":"journal-article","created":{"date-parts":[[2022,11,26]],"date-time":"2022-11-26T14:25:17Z","timestamp":1669472717000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":29,"title":["Vascular smooth muscle cell senescence accelerates medin aggregation via small extracellular vesicle secretion and extracellular matrix reorganization"],"prefix":"10.1111","volume":"22","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2211-9673","authenticated-orcid":false,"given":"Meredith","family":"Whitehead","sequence":"first","affiliation":[{"name":"School of Cardiovascular and Metabolic Medicine &amp; Sciences King's College London  London UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Syabira","family":"Yusoff","sequence":"additional","affiliation":[{"name":"School of Cardiovascular and Metabolic Medicine &amp; Sciences King's College London  London UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sadia","family":"Ahmad","sequence":"additional","affiliation":[{"name":"School of Cardiovascular and Metabolic Medicine &amp; Sciences King's College London  London UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7565-1455","authenticated-orcid":false,"given":"Lukas","family":"Schmidt","sequence":"additional","affiliation":[{"name":"School of Cardiovascular and Metabolic Medicine &amp; Sciences King's College London  London UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Manuel","family":"Mayr","sequence":"additional","affiliation":[{"name":"School of Cardiovascular and Metabolic Medicine &amp; Sciences King's College London  London UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jillian","family":"Madine","sequence":"additional","affiliation":[{"name":"Institute of Systems, Molecular and Integrative Biology University of Liverpool  London UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"David","family":"Middleton","sequence":"additional","affiliation":[{"name":"Department of Chemistry Lancaster University  Lancaster UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Catherine M.","family":"Shanahan","sequence":"additional","affiliation":[{"name":"School of Cardiovascular and Metabolic Medicine &amp; Sciences King's College London  London UK"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2022,11,25]]},"reference":[{"key":"e_1_2_9_2_1","doi-asserted-by":"publisher","DOI":"10.1038\/ncb2784"},{"key":"e_1_2_9_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.neuron.2009.12.016"},{"key":"e_1_2_9_4_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.bbapap.2011.05.016"},{"key":"e_1_2_9_5_1","doi-asserted-by":"publisher","DOI":"10.3389\/fphys.2012.00124"},{"key":"e_1_2_9_6_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.abb.2016.11.006"},{"key":"e_1_2_9_7_1","doi-asserted-by":"publisher","DOI":"10.1371\/journal.pone.0188840"},{"key":"e_1_2_9_8_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.diabres.2011.09.030"},{"key":"e_1_2_9_9_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.bbadis.2018.08.015"},{"key":"e_1_2_9_10_1","doi-asserted-by":"publisher","DOI":"10.1146\/annurev\u2010pathol\u2010121808\u2010102144"},{"key":"e_1_2_9_11_1","doi-asserted-by":"publisher","DOI":"10.1080\/13506129.2019.1625323"},{"key":"e_1_2_9_12_1","doi-asserted-by":"publisher","DOI":"10.22203\/ecm.v030a07"},{"key":"e_1_2_9_13_1","doi-asserted-by":"publisher","DOI":"10.1111\/jnc.13514"},{"key":"e_1_2_9_14_1","doi-asserted-by":"publisher","DOI":"10.1002\/cpcb.2"},{"key":"e_1_2_9_15_1","doi-asserted-by":"publisher","DOI":"10.1523\/JNEUROSCI.4837\u201011.2012"},{"key":"e_1_2_9_16_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jmgm.2006.09.001"},{"key":"e_1_2_9_17_1","doi-asserted-by":"publisher","DOI":"10.3390\/ijms22052716"},{"key":"e_1_2_9_18_1","doi-asserted-by":"publisher","DOI":"10.1073\/pnas.96.15.8669"},{"key":"e_1_2_9_19_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00418\u2010011\u20100854\u20107"},{"key":"e_1_2_9_20_1","doi-asserted-by":"publisher","DOI":"10.3390\/ijms21103720"},{"key":"e_1_2_9_21_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.devcel.2009.07.008"},{"key":"e_1_2_9_22_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.semcdb.2017.08.022"},{"key":"e_1_2_9_23_1","doi-asserted-by":"publisher","DOI":"10.1165\/rcmb.2020\u20100002OC"},{"key":"e_1_2_9_24_1","doi-asserted-by":"publisher","DOI":"10.1161\/CIRCRESAHA.116.305012"},{"key":"e_1_2_9_25_1","doi-asserted-by":"publisher","DOI":"10.1113\/JP271340"},{"key":"e_1_2_9_26_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00702\u2010011\u20100714\u20106"},{"key":"e_1_2_9_27_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00249\u2010010\u20100581\u20103"},{"key":"e_1_2_9_28_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.jpcb.0c03796"},{"key":"e_1_2_9_29_1","doi-asserted-by":"publisher","DOI":"10.1093\/cvr\/cvx135"},{"key":"e_1_2_9_30_1","doi-asserted-by":"publisher","DOI":"10.3390\/metabo10090339"},{"key":"e_1_2_9_31_1","doi-asserted-by":"publisher","DOI":"10.1111\/ggi.13757"},{"key":"e_1_2_9_32_1","doi-asserted-by":"publisher","DOI":"10.1007\/s10571-016-0357-0"},{"key":"e_1_2_9_33_1","doi-asserted-by":"publisher","DOI":"10.1038\/ncb2000"},{"key":"e_1_2_9_34_1","doi-asserted-by":"publisher","DOI":"10.3233\/JAD\u2010191073"},{"key":"e_1_2_9_35_1","doi-asserted-by":"publisher","DOI":"10.1080\/13506120500107006"},{"key":"e_1_2_9_36_1","doi-asserted-by":"publisher","DOI":"10.1038\/labinvest.3700679"},{"key":"e_1_2_9_37_1","doi-asserted-by":"publisher","DOI":"10.1002\/path.1014"},{"key":"e_1_2_9_38_1","doi-asserted-by":"publisher","DOI":"10.1074\/jbc.M112.404467"},{"key":"e_1_2_9_39_1","doi-asserted-by":"publisher","DOI":"10.1073\/pnas.0603838103"},{"key":"e_1_2_9_40_1","doi-asserted-by":"publisher","DOI":"10.1159\/000101841"},{"key":"e_1_2_9_41_1","doi-asserted-by":"publisher","DOI":"10.3390\/ijms19051444"},{"key":"e_1_2_9_42_1","doi-asserted-by":"publisher","DOI":"10.1016\/S1474\u20104422(20)30412\u20109"},{"key":"e_1_2_9_43_1","doi-asserted-by":"publisher","DOI":"10.1002\/jcp.1041530303"},{"key":"e_1_2_9_44_1","doi-asserted-by":"publisher","DOI":"10.1152\/ajpheart.00136.2018"},{"key":"e_1_2_9_45_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.devcel.2011.08.019"},{"key":"e_1_2_9_46_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41392\u2010021\u201000765\u20103"},{"key":"e_1_2_9_47_1","doi-asserted-by":"publisher","DOI":"10.1186\/ar1499"},{"key":"e_1_2_9_48_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1471\u20104159.2007.05128.x"},{"key":"e_1_2_9_49_1","doi-asserted-by":"publisher","DOI":"10.1038\/sj.ki.5001874"}],"container-title":["Aging Cell"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1111\/acel.13746","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/full-xml\/10.1111\/acel.13746","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1111\/acel.13746","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,8,21]],"date-time":"2023-08-21T01:27:23Z","timestamp":1692581243000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1111\/acel.13746"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2022,11,25]]},"references-count":48,"journal-issue":{"issue":"2","published-print":{"date-parts":[[2023,2]]}},"alternative-id":["10.1111\/acel.13746"],"URL":"https:\/\/doi.org\/10.1111\/acel.13746","archive":["Portico"],"relation":{},"ISSN":["1474-9718","1474-9726"],"issn-type":[{"value":"1474-9718","type":"print"},{"value":"1474-9726","type":"electronic"}],"subject":[],"published":{"date-parts":[[2022,11,25]]},"assertion":[{"value":"2022-05-24","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2022-11-13","order":1,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2022-11-25","order":2,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}],"article-number":"e13746"}}