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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Hu, Guo-Bin Lou, Hui-Min Dong, Xian-Zhi Liu, Qiu-Ming Zhang, Shi-Cui |
| Description | Country affiliation: China Author Affiliation: Hu GB ( College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China. huguobin@mail.ouc.edu.cn) |
| Abstract | Interferon regulatory factor 5 (IRF5) has been identified as a key transcriptional mediator regulating expression of both type I interferons (IFNs) and proinflammatory cytokines. In this study, the cDNA and genomic sequences of IRF5 were isolated from Japanese flounder, Paralichthys olivaceus. The gene of Japanese flounder (Jf)IRF5 is 7326 bp long, contains 9 exons and 8 introns and encodes a putative protein of 472 amino acids. The predicted protein sequence shares 61.1-81.9% identity to fish IRF5 and possesses a DNA-binding domain (DBD), a middle region (MR), an IRF association domain (IAD), a virus activated domain (VAD) and two nuclear localization signals (NLSs) conserved in all known IRF5s. Phylogenetic analysis clustered it into the teleost IRF5 subgroup within vertebrate IRF5 group. JfIRF5 mRNA was constitutively expressed in all tissues examined, with higher levels observed in the gills and head kidney. Gene expression of JfIRF5 was analyzed over a 7-day time course in the gills, head kidney, spleen and muscle of Japanese flounders challenged with lymphocystis disease virus (LCDV) and polyinosinic:polycytidylic acid (poly I:C). The data showed that JfIRF5 expression was slightly up-regulated by LCDV, but its induction time was clearly moved up; in contrast, the induction upon poly I:C challenge started not earlier than day 2 post-injection and was stronger and more persistent with a later peak time in all four organs. The late and long-lasting inductive expression of JfIRF5 following poly I:C challenge suggests that it might be an interferon stimulated gene (ISG), the induction of which is driven by poly I:C-induced type I IFNs. |
| File Format | HTM / HTML |
| ISSN | 0145305X |
| Issue Number | 2 |
| Volume Number | 38 |
| e-ISSN | 18790089 |
| Journal | Developmental & Comparative Immunology |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2012-10-01 |
| Publisher Place | United States |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Immunology Cloning, Molecular Fish Proteins Genetics Flounder Immunology Interferon Regulatory Factors Iridoviridae Amino Acid Sequence Animals Base Sequence Dna Virus Infections Fish Diseases Chemistry Metabolism Humans Molecular Sequence Data Poly I-c Sequence Alignment Journal Article Research Support, Non-u.s. Gov't |
| Content Type | Text |
| Resource Type | Article |
| Subject | Developmental Biology Immunology |
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