{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,22]],"date-time":"2026-04-22T13:03:08Z","timestamp":1776862988189,"version":"3.51.2"},"reference-count":65,"publisher":"MDPI AG","issue":"12","license":[{"start":{"date-parts":[[2020,11,25]],"date-time":"2020-11-25T00:00:00Z","timestamp":1606262400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["32002272"],"award-info":[{"award-number":["32002272"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Viruses"],"abstract":"<jats:p>DEAD-box helicase 23 (DDX23) is a host nuclear helicase, which is a part of the spliceosomal complex and involved in pre-mRNA splicing. To investigate whether DDX23, an internal ribosomal entry sites transacting factor (ITAF) affects foot-and-mouth disease virus (FMDV) replication and translation through internal ribosome entry site (IRES)-dependent manner. For this, we utilized a pull-down assay, Western blotting, quantitative real-time PCR, confocal microscopy, overexpression and small interfering RNA knockdown, as well as the median tissue culture infective dose. Our findings showed that FMDV infection inhibited DDX23 expression and the overexpression of DDX23 reduced viral replication, however, CRISPR Cas9 knockout\/small interfering RNA knockdown increased FMDV replication. FMDV IRES domain III and IV interacted with DDX23, whereas DDX23 interacted with FMDV 3C proteinase and significantly degraded. The enzymatic activity of FMDV 3C proteinase degraded DDX23, whereas FMDV degraded DDX23 via the lysosomal pathway. Additionally, IRES-driven translation was suppressed in DDX23-overexpressing cells, and was enhanced in DDX23 knocked down. Collectively, our results demonstrated that DDX23 negatively affects FMDV IRES-dependent translation, which could be a useful target for the design of antiviral drugs.<\/jats:p>","DOI":"10.3390\/v12121348","type":"journal-article","created":{"date-parts":[[2020,11,25]],"date-time":"2020-11-25T08:59:15Z","timestamp":1606294755000},"page":"1348","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":21,"title":["The DDX23 Negatively Regulates Translation and Replication of Foot-and-Mouth Disease Virus and Is Degraded by 3C Proteinase"],"prefix":"10.3390","volume":"12","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9350-1610","authenticated-orcid":false,"given":"Sahibzada Waheed","family":"Abdullah","sequence":"first","affiliation":[{"name":"State Key Laboratory of Veterinary Etiological Biology, O.I.E.\/China National Foot-and-Mouth Disease Reference Laboratory, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shichong","family":"Han","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Veterinary Etiological Biology, O.I.E.\/China National Foot-and-Mouth Disease Reference Laboratory, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jin\u2019en","family":"Wu","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Veterinary Etiological Biology, O.I.E.\/China National Foot-and-Mouth Disease Reference Laboratory, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yun","family":"Zhang","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Veterinary Etiological Biology, O.I.E.\/China National Foot-and-Mouth Disease Reference Laboratory, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Manyuan","family":"Bai","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Veterinary Etiological Biology, O.I.E.\/China National Foot-and-Mouth Disease Reference Laboratory, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ye","family":"Jin","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Veterinary Etiological Biology, O.I.E.\/China National Foot-and-Mouth Disease Reference Laboratory, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xiaoying","family":"Zhi","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Veterinary Etiological Biology, O.I.E.\/China National Foot-and-Mouth Disease Reference Laboratory, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Junyong","family":"Guan","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Veterinary Etiological Biology, O.I.E.\/China National Foot-and-Mouth Disease Reference Laboratory, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4975-739X","authenticated-orcid":false,"given":"Shiqi","family":"Sun","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Veterinary Etiological Biology, O.I.E.\/China National Foot-and-Mouth Disease Reference Laboratory, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Huichen","family":"Guo","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Veterinary Etiological Biology, O.I.E.\/China National Foot-and-Mouth Disease Reference Laboratory, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2020,11,25]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"4908","DOI":"10.1128\/JVI.03668-13","article-title":"3Cpro of foot-and-mouth disease virus antagonizes the interferon signaling pathway by blocking STAT1\/STAT2 nuclear translocation","volume":"88","author":"Du","year":"2014","journal-title":"J. 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