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Proteomic Profiling Reveals Autoimmune Targets in Sarcoidosis
KTH, Skolan för bioteknologi (BIO), Proteomik och nanobioteknologi. KTH, Centra, Science for Life Laboratory, SciLifeLab.ORCID-id: 0000-0002-0056-1313
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2015 (Engelska)Ingår i: American Journal of Respiratory and Critical Care Medicine, ISSN 1073-449X, E-ISSN 1535-4970, Vol. 191, nr 5, s. 574-583Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Rationale: There is a need to further characterize the antibody repertoire in relation to sarcoidosis and potentially related autoantigens. Objectives: We investigated bronchoalveolar lavage (BAL) and serum samples from patients with sarcoidosis and healthy and diseased control subjects to discover sarcoidosis-associated autoantigens. Methods: Antigen microarrays built on 3,072 protein fragments were used to screen for IgG reactivity in 73 BAL samples from subjects with sarcoidosis, subjects with asthma, and healthy subjects. A set of 131 targets were selected for subsequent verification on suspension bead arrays using 272 additional BAL samples and 141 paired sera. Reactivity to four antigens was furthermore analyzed in 22 unprocessed BAL samples from patients with fibrosis and 269 plasma samples from patients diagnosed with myositis. Measurements and Main Results: Reactivity toward zinc finger protein 688 and mitochondrial ribosomal protein L43 were discovered with higher frequencies in patients with sarcoidosis, for mitochondrial ribosomal protein L43 especially in patients with non-Lofgren syndrome. Increased reactivity toward nuclear receptor coactivator 2 was also observed in patients with non-Lofgren syndrome as compared with patients with Lofgren syndrome. The antigen representing adenosine diphosphate-ribosylation factor GTPase activating protein 1 revealed high reactivity frequency in all sample groups but with significantly higher level of IgG reactivities in patients with sarcoidosis. Conclusions: Autoantigen reactivity was present in most BAL and serum samples analyzed, and the results revealed high interindividual heterogeneity, with most of the reactivities observed in single individuals only. Four proteins are here proposed as sarcoidosis-associated autoimmune targets and of interest for further validation in independent cohorts.

Ort, förlag, år, upplaga, sidor
2015. Vol. 191, nr 5, s. 574-583
Nationell ämneskategori
Medicinsk bioteknologi
Identifikatorer
URN: urn:nbn:se:kth:diva-164459DOI: 10.1164/rccm.201407-1341OCISI: 000350833900016PubMedID: 25608002Scopus ID: 2-s2.0-84923870587OAI: oai:DiVA.org:kth-164459DiVA, id: diva2:807066
Forskningsfinansiär
VetenskapsrådetScience for Life Laboratory - a national resource center for high-throughput molecular bioscienceKnut och Alice Wallenbergs Stiftelse
Anmärkning

QC 20150422

Tillgänglig från: 2015-04-22 Skapad: 2015-04-17 Senast uppdaterad: 2017-12-04Bibliografiskt granskad

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Häggmark, AnnaSchwenk, Jochen M.

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Häggmark, AnnaMattsson, CeciliaAndersson, EniSchwenk, Jochen M.Nilsson, Peter
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Proteomik och nanobioteknologiScience for Life Laboratory, SciLifeLab
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American Journal of Respiratory and Critical Care Medicine
Medicinsk bioteknologi

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