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dc.contributor.authorMalik, R.
dc.contributor.authorDau, T.
dc.contributor.authorGonik, M.
dc.date.accessioned2019-07-26T15:58:31Z
dc.date.available2019-07-26T15:58:31Z
dc.date.issued2017
dc.identifier.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85016951331&doi=10.1073%2fpnas.1616301114&partnerID=40&md5=427bf7f38cf1d1a85b82869320892ba6
dc.identifier.urihttp://hdl.handle.net/10713/10129
dc.description.abstractLarge artery atherosclerotic stroke (LAS) shows substantial heritability not explained by previous genome-wide association studies. Here, we explore the role of coding variation in LAS by analyzing variants on the HumanExome BeadChip in a total of 3,127 cases and 9,778 controls from Europe, Australia, and South Asia. We report on a nonsynonymous single-nucleotide variant in serpin family A member 1 (SERPINA1) encoding alpha-1 antitrypsin [AAT; p.V213A; P = 5.99E-9, odds ratio (OR) = 1.22] and confirm histone deacetylase 9 (HDAC9) as a major risk gene for LAS with an association in the 3?-UTR (rs2023938; P = 7.76E-7, OR = 1.28). Using quantitative microscale thermophoresis, we show that M1 (A213) exhibits an almost twofold lower dissociation constant with its primary target human neutrophil elastase (NE) in lipoprotein-containing plasma, but not in lipid-free plasma. Hydrogen/deuterium exchange combined with mass spectrometry further revealed a significant difference in the global flexibility of the two variants. The observed stronger interaction with lipoproteins in plasma and reduced global flexibility of the Val-213 variant most likely improve its local availability and reduce the extent of proteolytic inactivation by other proteases in atherosclerotic plaques. Our results indicate that the interplay between AAT, NE, and lipoprotein particles is modulated by the gate region around position 213 in AAT, far away from the unaltered reactive center loop (357-360). Collectively, our findings point to a functionally relevant balance between lipoproteins, proteases, and AAT in atherosclerosis.en_US
dc.description.sponsorshipThis work was supported by grants from the German Federal Ministry of Education and Research (e:Med program e:AtheroSysMed), the FP7 European Union (EU) project CVgenes{at}target(261123), the Deutsche Forschungsgemeinschaft (DFG) (CRC 1123, B3), the Corona Foundation, and the Fondation Leducq (Transatlantic Network of Excellence on the Pathogenesis of Small Vessel Disease of the Brain) (all to M.D.), as well as by grants from the Australian National and Medical Health Research Council (Grant 569257), Australian National Heart Foundation (NHF; Grant G 04S 1623), Gladys M. Brawn Fellowship scheme, and Vincent Fairfax Family Foundation in Australia.en_US
dc.description.urihttps://www.doi.org/10.1073/pnas.1616301114en_US
dc.language.isoen_USen_US
dc.publisherNational Academy of Sciencesen_US
dc.relation.ispartofProceedings of the National Academy of Sciences of the United States of America
dc.subjectAntitrypsinen_US
dc.subjectGeneticsen_US
dc.subjectIschemic strokeen_US
dc.subjectLarge artery strokeen_US
dc.subjectVariationen_US
dc.titleCommon coding variant in SERPINA1 increases the risk for large artery strokeen_US
dc.typeArticleen_US
dc.identifier.doi10.1073/pnas.1616301114
dc.identifier.pmid28265093


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