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      Characterization and Functional Study on Octopus ocellatus Interleukin-17

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          Abstract

          Interleukin-17 (IL-17), a prototype member of IL-17 family, plays an important role in defending against extracellular pathogens as a pro-inflammatory cytokine. The function and distribution of IL-17 have been extensively studied in many vertebrates. However, few study has focused on the role of IL-17 in invertebrates, especially in mollusks. In this study, an IL-17 homolog was identified in Octopus ocellatus, which was designated as OoIL-17. The phylogenetic analysis showed that OoIL-17 is clustered well with other invertebrate IL-17, indicating it is highly similar with the IL-17 of other invertebrates. The expression of OoIL-17 gene was analyzed with qRT-PCR in a variety of healthy tissues and the hemocytes infected with Vibro anguillarum or Micrococcus luteus. The mRNA of OoIL-17 gene is constitutively expressed at different levels in all examined tissues of healthy O. ocellatus, including mantle, stomach, hemocytes, muscle, gonad, hepatopancreas, systemic heart and gill. The lowest expression was observed in mantle while the highest was observed in hepatopancreas. The expression level of OoIL-17 gene is significantly up-regulated in O. ocellatus hemocytes upon infection with V. anguillarum and M. luteus, indicating its active involvement in the host immune response against bacterial pathogens. The results laid the foundation for further understanding the innate immune mechanisms of IL-17 in O. ocellatus and mollusks.

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          Author and article information

          Journal
          JOUC
          Journal of Ocean University of China
          Science Press and Springer (China )
          1672-5182
          12 November 2019
          01 December 2019
          : 18
          : 6
          : 1443-1450
          Affiliations
          1School of Agriculture, Ludong University, Yantai 264025, China
          2Weihai Fisheries Technology Extension Center, Weihai 264200, China
          3College of Life Sciences, Yantai University, Yantai 264005, China
          4College of Life Sciences, Ludong University, Yantai 264025, China
          5School of Life Sciences, East China Normal University, Shanghai 200241, China
          Author notes
          *Corresponding author: YANG Jianmin
          Article
          s11802-019-4116-y
          10.1007/s11802-019-4116-y
          Copyright © Ocean University of China, Science Press and Springer-Verlag GmbH Germany 2019.

          The copyright to this article, including any graphic elements therein (e.g. illustrations, charts, moving images), is hereby assigned for good and valuable consideration to the editorial office of Journal of Ocean University of China, Science Press and Springer effective if and when the article is accepted for publication and to the extent assignable if assignability is restricted for by applicable law or regulations (e.g. for U.S. government or crown employees).

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          Self URI (journal-page): https://www.springer.com/journal/11802

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