RT Journal Article
T1 Gene expression comparison of resistant and susceptible Atlantic salmon fry challenged with Infectious Pancreatic Necrosis virus reveals a marked contrast in immune response
A1 Robledo Sánchez, Diego
A1 Taggart, John B.
A1 Ireland, Jacqueline H.
A1 McAndrew, Brendan J.
A1 Starkey, William G.
A1 Haley, Chris S.
A1 Hamilton, Alastair
A1 Guy, Derrick R.
A1 Mota-Velasco, José C.
A1 Gheyas, Almas A.
A1 Tinch, Alan E.
A1 Verner-Jeffreys, David W.
A1 Paley, Richard K.
A1 Rimmer, Georgina S. E.
A1 Tew, Ian J.
A1 Bishop, Stephen C.
A1 Bron, James E.
A1 Houston, Ross D.
K1 Salmo salar
K1 Virus
K1 Transcriptome
K1 Infectious pancreatic necrosis
K1 Disease resistance
K1 Interferon
K1 Innate immunity
K1 Aquaculture
AB BackgroundInfectious Pancreatic Necrosis (IPN) is a highly contagious birnavirus disease of farmed salmonid fish, which often causes high levels of morbidity and mortality. A large host genetic component to resistance has been previously described for Atlantic salmon (Salmo salar L.), which mediates high mortality rates in some families and zero mortality in others. However, the molecular and immunological basis for this resistance is not yet fully known. This manuscript describes a global comparison of the gene expression profiles of resistant and susceptible Atlantic salmon fry following challenge with the IPN virus.ResultsSalmon fry from two IPNV-resistant and two IPNV-susceptible full sibling families were challenged with the virus and sampled at 1 day, 7 days and 20 days post-challenge. Significant viral titre was observed in both resistant and susceptible fish at all timepoints, although generally at higher levels in susceptible fish. Gene expression profiles combined with gene ontology and pathway analyses demonstrated that while a clear immune response was observed in both resistant and susceptible fish, there were striking differences between the two phenotypes. The susceptible fish showed marked up-regulation of genes related to cytokine activity and inflammatory response that evidently failed to protect against the virus. In contrast, the resistant fish demonstrated a less pronounced immune response including up-regulation of genes relating to the M2 macrophage system.ConclusionsWhile only the susceptible phenotype shows appreciable mortality levels, both resistant and susceptible fish can become infected with IPNV. Susceptible fish are characterized by a much larger, yet ineffective, immune response, largely related to cytokine and inflammatory systems. Resistant fish demonstrate a more moderate, putative macrophage-mediated inflammatory response, which may contribute to their survival
PB BMC
SN 1471-2164
YR 2016
FD 2016
LK http://hdl.handle.net/10347/22644
UL http://hdl.handle.net/10347/22644
LA eng
NO Robledo, D., Taggart, J.B., Ireland, J.H. et al. Gene expression comparison of resistant and susceptible Atlantic salmon fry challenged with Infectious Pancreatic Necrosis virus reveals a marked contrast in immune response. BMC Genomics 17, 279 (2016). https://doi.org/10.1186/s12864-016-2600-y
NO This research was supported by Biotechnology and Biological Sciences Research Council (BBSRC) grants (BB/H022007/1, BB/F002750/1, BB/F001959/1) awarded to The Roslin Institute and University of Stirling, and by a BBSRC Institute Strategic Funding Grant to The Roslin Institute. DR was funded by a postgraduate grant from Fundación Barrié. The authors also acknowledge the support of the MASTS pooling initiative (The Marine Alliance for Science and Technology for Scotland) in the completion of this study. MASTS is funded by the Scottish Funding Council (grant reference HR09011) and contributing institutions
DS Minerva
RD 22 abr 2026