{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,17]],"date-time":"2026-03-17T00:27:36Z","timestamp":1773707256731,"version":"3.50.1"},"reference-count":83,"publisher":"Rockefeller University Press","issue":"4","content-domain":{"domain":["rupress.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2008,4,14]]},"abstract":"<jats:p>Nonliving antiviral vaccines traditionally target proteins expressed at the surface of the virion with the hope of inducing neutralizing antibodies. Orthopoxviruses (OPVs), such as the human smallpox virus and the mouse-equivalent ectromelia virus (ECTV; an agent of mousepox), encode immune response modifiers (IRMs) that can increase virulence by decreasing the host immune response. We show that one of these IRMs, the type I interferon (IFN) binding protein (bp) of ECTV, is essential for ECTV virulence and is a natural target of the antibody response. More strikingly, we demonstrate that immunization with recombinant type I IFN bp protects mice from lethal mousepox. Collectively, our experiments have important implications for our understanding of the role of IRMs in OPV virulence and of type I IFNs in OPV infections. Furthermore, our work provides proof of concept that effective antiviral vaccines can be made to prevent disease by targeting virulence factors as an alternative to the traditional approach that attempts to prevent infection by virus neutralization.<\/jats:p>","DOI":"10.1084\/jem.20071854","type":"journal-article","created":{"date-parts":[[2008,4,8]],"date-time":"2008-04-08T00:44:15Z","timestamp":1207615455000},"page":"981-992","update-policy":"https:\/\/doi.org\/10.1084\/jem.crossmarkpolicy","source":"Crossref","is-referenced-by-count":71,"title":["The orthopoxvirus type I IFN binding protein is essential for virulence and an effective target for vaccination"],"prefix":"10.1084","volume":"205","author":[{"given":"Ren-Huan","family":"Xu","sequence":"first","affiliation":[{"name":"1Program of Viral Pathogenesis, Fox Chase Cancer Center (FCCC), Philadelphia, PA 19111"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Matthew","family":"Cohen","sequence":"additional","affiliation":[{"name":"1Program of Viral Pathogenesis, Fox Chase Cancer Center (FCCC), Philadelphia, PA 19111"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yong","family":"Tang","sequence":"additional","affiliation":[{"name":"2Division of Medical Sciences, Fox Chase Cancer Center (FCCC), Philadelphia, PA 19111"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Eric","family":"Lazear","sequence":"additional","affiliation":[{"name":"3Department of Microbiology, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA 19104"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"J. 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