4.6 Review

Recent insights into anti-WSSV immunity in crayfish

期刊

出版社

ELSEVIER SCI LTD
DOI: 10.1016/j.dci.2020.103947

关键词

White spot syndrome virus; Crayfish; Endocytosis; Intracellular transport; Antiviral immunity; Signal transduction

资金

  1. National Key Research and Development Program of China [2018YFD0900502]
  2. NSFC [U1605214, 41676135]
  3. Fundamental Research Funds for the Central Universities [20720180123]

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White spot syndrome virus (WSSV) is the most severe viral pathogen for farmed crustaceans, causing significant economic losses globally. Research on WSSV is hindered by the lack of suitable crustacean cell lines for propagation and incomplete host genomes annotations. Recent studies in crayfish have revealed new cellular events related to WSSV infection and immune responses, providing insights for potential antiviral drug development in crustacean farming.
White spot syndrome virus (WSSV) is currently the most severely viral pathogen for farmed crustaceans such as shrimp and crayfish, which has been causing huge economic losses for crustaceans farming worldwide every year. Unfortunately, study on the molecular mechanisms of WSSV has been restricted by the lack of crustacean cell lines for WSSV propagation as well as the incompletely annotated genomes for host species, resulting in limited elucidation for WSSV pathogenesis at present. In addition to the findings of anti-WSSV response in shrimp, some of novel cellular events involved in WSSV infection have been recently revealed in crayfish, including endocytosis and intracellular transport of WSSV, innate immune pathways in response to WSSV infection, and regulation of viral gene expression by host genes. Despite these advances, many fundamental gaps in WSSV pathogenesis are still remaining, for example, how WSSV genome enters into nucleus and how the progeny virions are fully assembled in the host cell nucleus. In this review, recent findings in WSSV infection mechanism and the antiviral immunity against WSSV in crayfish are summarized and discussed, which may provide us a better understanding of the WSSV pathogenesis as well as new ideas for the target design of antiviral drugs against WSSV in crustaceans farming.

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