{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,14]],"date-time":"2026-09-14T18:59:45Z","timestamp":1789412385736,"version":"build-2803163510"},"reference-count":63,"publisher":"MDPI AG","issue":"6","license":[{"start":{"date-parts":[[2024,3,20]],"date-time":"2024-03-20T00:00:00Z","timestamp":1710892800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Russian Science Foundation","award":["22-15-00103"],"award-info":[{"award-number":["22-15-00103"]}]},{"name":"Russian Science Foundation","award":["ICBFM SB RAS N 121031300041-4"],"award-info":[{"award-number":["ICBFM SB RAS N 121031300041-4"]}]},{"name":"Russian State funded budget project","award":["22-15-00103"],"award-info":[{"award-number":["22-15-00103"]}]},{"name":"Russian State funded budget project","award":["ICBFM SB RAS N 121031300041-4"],"award-info":[{"award-number":["ICBFM SB RAS N 121031300041-4"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Molecules"],"abstract":"<jats:p>The exact mechanisms of MS (multiple sclerosis) evolution are still unknown. However, the development of EAE (experimental autoimmune encephalomyelitis simulating human MS) in C57BL\/6 mice occurs due to the violation of bone marrow hematopoietic stem cell differentiation profiles, leading to the production of toxic for human autoantibody splitting MBP (myelin basic protein), MOG (mouse oligodendrocyte glycoprotein), five histones, DNA, and RNA. Here, we first analyzed the changes in the relative phosphatase activity of IgGs from C57BL\/6 mice blood over time, corresponding to three stages of EAE: onset, acute, and remission. Antibodies have been shown to catalyze the hydrolysis of p-nitrophenyl phosphate at several optimal pH values, mainly in the range of 6.5\u20137.0 and 8.5\u20139.5. During the spontaneous development of EAE, the most optimal value is pH 6.5. At 50 days after the birth of mice, the phosphatase activity of IgGs at pH 8.8 is 1.6-fold higher than at pH 6.5. During spontaneous development of EAE from 50 to 100 days, an increase in phosphatase activity is observed at pH 6.5 but a decrease at pH 8.8. After mice were immunized with DNA\u2013histone complex by 20 and 60 days, phosphatase activity increased respectively by 65.3 and 109.5 fold (pH 6.5) and 128.4 and 233.6 fold (pH 8.8). Treatment of mice with MOG at the acute phase of EAE development (20 days) leads to a maximal increase in the phosphatase activity of 117.6 fold (pH 6.5) and 494.7 fold (pH 8.8). The acceleration of EAE development after mice treatment with MOG and DNA\u2013histone complex results in increased production of lymphocytes synthesizing antibodies with phosphatase activity. All data show that IgG phosphatase activity could be essential in EAE pathogenesis.<\/jats:p>","DOI":"10.3390\/molecules29061382","type":"journal-article","created":{"date-parts":[[2024,3,20]],"date-time":"2024-03-20T09:14:33Z","timestamp":1710926073000},"page":"1382","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Autoantibodies-Abzymes with Phosphatase Activity in Experimental Autoimmune Encephalomyelitis Mice"],"prefix":"10.3390","volume":"29","author":[{"given":"Andrey E.","family":"Urusov","sequence":"first","affiliation":[{"name":"Institute of Chemical Biology and Fundamental Medicine, SB of the Russian Academy of Sciences, Lavrentiev Ave., 8, 630090 Novosibirsk, Russia"},{"name":"Faculty of Natural Sciences, Novosibirsk State University, 630090 Novosibirsk, Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6972-9068","authenticated-orcid":false,"given":"Kseniya S.","family":"Aulova","sequence":"additional","affiliation":[{"name":"Institute of Chemical Biology and Fundamental Medicine, SB of the Russian Academy of Sciences, Lavrentiev Ave., 8, 630090 Novosibirsk, Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4988-8923","authenticated-orcid":false,"given":"Georgy A.","family":"Nevinsky","sequence":"additional","affiliation":[{"name":"Institute of Chemical Biology and Fundamental Medicine, SB of the Russian Academy of Sciences, Lavrentiev Ave., 8, 630090 Novosibirsk, Russia"},{"name":"Faculty of Natural Sciences, Novosibirsk State University, 630090 Novosibirsk, Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2024,3,20]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"427","DOI":"10.1016\/0968-0004(87)90208-8","article-title":"Antibodies as enzymes","volume":"12","author":"Lerner","year":"1987","journal-title":"Trends Bioch. 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