{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,13]],"date-time":"2026-10-13T16:27:38Z","timestamp":1791908858702,"version":"4.3.4"},"reference-count":50,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2009,11,4]],"date-time":"2009-11-04T00:00:00Z","timestamp":1257292800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Biotech &amp;amp; Bioengineering"],"published-print":{"date-parts":[[2010,3]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Smallpox is an acute, highly infectious viral disease unique to humans, and responsible for an estimated 300\u2013500 million deaths in the 20th century. Following successful vaccination campaigns through the 19th and 20th centuries, smallpox was declared eradicated by the World Health Organization in 1980. However, the threat of using smallpox as a biological weapon prompted efforts of some governments to produce smallpox vaccines for emergency preparedness. An additional aspect for the interest in smallpox virus is its potential use as a platform technology for vector vaccines. In particular, the latter requires a high safety level for routine applications. IMVAMUNE\u00ae, a third generation smallpox vaccine based on the attenuated Modified Vaccinia Ankara (MVA) virus, demonstrates superior safety compared to earlier generations and represents therefore an interesting choice as viral vector. Current downstream production processes of Vaccinia virus and MVA are mainly based on labor\u2010intensive centrifugation and filtration methods, requiring expensive nuclease treatment in order to achieve sufficient low host\u2010cell DNA levels for human vaccines. This study compares different ion exchange and pseudo\u2010affinity membrane adsorbers (MA) to capture chicken embryo fibroblast cell\u2010derived MVA\u2010BN\u00ae after cell homogenization and clarification. In parallel, the overall performance of classical bead\u2010based resin chromatography (Cellufine\u00ae sulfate and Toyopearl\u00ae AF\u2010Heparin) was investigated. The two tested pseudo\u2010affinity MA (i.e., sulfated cellulose and heparin) were superior over the applied ion exchange MA in terms of virus yield and contaminant depletion. Furthermore, studies confirmed an expected increase in productivity resulting from the increased volume throughput of MA compared to classical bead\u2010based column chromatography methods. Overall virus recovery was \u223c60% for both pseudo\u2010affinity MA and the Cellufine\u00ae sulfate resin. Depletion of total protein ranged between 86% and 102% for all tested matrices. Remaining dsDNA in the product fraction varied between 24% and 7% for the pseudo\u2010affinity chromatography materials. Cellufine\u00ae sulfate and the reinforced sulfated cellulose MA achieved the lowest dsDNA product contamination. Finally, by a combination of pseudo\u2010affinity with anion exchange MA a further reduction of host\u2010cell DNA was achieved. Biotechnol. Bioeng. 2010. 105: 761\u2013769. \u00a9 2009 Wiley Periodicals, Inc.<\/jats:p>","DOI":"10.1002\/bit.22595","type":"journal-article","created":{"date-parts":[[2009,11,4]],"date-time":"2009-11-04T21:20:04Z","timestamp":1257369604000},"page":"761-769","source":"Crossref","is-referenced-by-count":25,"title":["Capturing of cell culture\u2010derived modified Vaccinia Ankara virus by ion exchange and pseudo\u2010affinity membrane adsorbers"],"prefix":"10.1002","volume":"105","author":[{"given":"Michael W.","family":"Wolff","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Corina","family":"Siewert","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sylvia","family":"Lehmann","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sara 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