Double stranded RNA is processed differently in two oyster species

Muhammad Masood*, Marie E. Herberstein, David A. Raftos, Sham V. Nair

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Ostreid herpes virus causes serious disease in the Pacific oyster (Crassostrea gigas), but not in the Sydney Rock Oyster (Saccostrea glomerata). To investigate differences in disease progression, we injected oysters with double stranded RNA (dsRNA). dsRNA is known to mimic viral infection, and can evoke immune responses when Toll-like receptors detect the dsRNA, leading to the production of type 1 interferon and inflammation cytokines. The uptake and processing of dsRNA was tracked in gill and mantle tissue of Crassostrea gigas and Saccostrea glomerata after injection of fluorochrome labelled poly (I:C) dsRNA. The two species showed significant differences in tissue uptake and clearance, and differences in immune responses confirmed by real time PCR. These results showed that S. glomerata was more efficient in processing dsRNA than C. gigas, and that the gill tissue is an important site of dsRNA processing and response.

Original languageEnglish
Pages (from-to)285-291
Number of pages7
JournalDevelopmental and Comparative Immunology
Volume76
DOIs
Publication statusPublished - 1 Nov 2017

Keywords

  • invertebrate
  • immune response
  • virus
  • oyster
  • poly (I:C)

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