{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,9,12]],"date-time":"2025-09-12T19:25:24Z","timestamp":1757705124018},"reference-count":36,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2006,4,10]],"date-time":"2006-04-10T00:00:00Z","timestamp":1144627200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Liver International"],"published-print":{"date-parts":[[2006,5]]},"abstract":"<jats:p><jats:bold>Abstract: Background: <\/jats:bold> Autoantibody responses reactive with the E2 and E3BP components of pyruvate dehydrogenase complex (PDC), which characterise primary biliary cirrhosis (PBC) crossreact, precluding the identification, from serological studies, of the antigen to which the principal breakdown of tolerance occurs. Although autoreactive T\u2010cell responses to PDC\u2010E2 have been well characterised it is, at present, unclear whether T\u2010cell tolerance breakdown also occurs to PDC\u2010E3BP. The aims of this study were to characterise autoreactive T\u2010cell responses to PDC\u2010E3BP in PBC and potential factors regulating their expression.<\/jats:p><jats:p><jats:bold>Methods: <\/jats:bold> Peripheral blood T\u2010cell proliferative responses to purified recombinant human PDC\u2010E2 and PDC\u2010E3BP at a range of concentrations were characterised in PBC patients and control subjects.<\/jats:p><jats:p><jats:bold>Results: <\/jats:bold> T\u2010cell proliferative responses to both E2 and E3BP were absent from control subjects (median peak stimulation index (SI) to PDC\u2010E2 1.2 [range 0.3\u20131.9], 0\/10 positive (SI&gt;2.32), median peak SI to PDC\u2010E3BP 1.1 [0.7\u20132.1]], 0\/10 positive). Significant responses to PDC\u2010E2 were seen in the majority of patients (median peak SI 11.4 [0.4\u201324.4], 17\/20 (85%) positive) but to PDC\u2010E3BP in only a minority (median peak SI 1\u20139 [0.6\u20139.95], 8\/20 (40%) positive). Where responses to PDC\u2010E3BP were seen they were universally secondary to responses to PDC\u2010E2.<\/jats:p><jats:p><jats:bold>Conclusions: <\/jats:bold> Despite the presence of antibodies reactive with PDC\u2010E3BP in the majority of PBC patients this self\u2010protein is not a dominant T\u2010cell autoantigen in PBC.<\/jats:p>","DOI":"10.1111\/j.1478-3231.2006.01253.x","type":"journal-article","created":{"date-parts":[[2006,4,12]],"date-time":"2006-04-12T16:29:24Z","timestamp":1144859364000},"page":"406-413","source":"Crossref","is-referenced-by-count":1,"title":["PDC\u2010E3BP is not a dominant T\u2010cell autoantigen in primary biliary cirrhosis"],"prefix":"10.1111","volume":"26","author":[{"given":"Anna","family":"McHugh","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Amanda J.","family":"Robe","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jeremy M.","family":"Palmer","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"David E. 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