Comparative analysis of differential gene expression in kidney tissues of moribund and surviving crucian carp ( Carassius auratus gibelio ) in response to cyprinid herpesvirus 2 infection

Comparative analysis of differential gene expression in kidney tissues of moribund and surviving... Cyprinid herpesvirus 2 (CyHV-2) has recently been associated with high mortality of cultured crucian carp ( Carassius auratus gibelio ) in eastern China. In this study, we established a real-time PCR method to confirm viral infection of crucian carp and to quantify CyHV-2 particles obtained by sucrose gradient centrifugation from diseased fish. Virus-free crucian carp were artificially infected with CyHV-2 using an injection method, which resulted in a dose-dependent death rate. In situ hybridization analysis indicated that there was extensive viral replication and lysis in the kidneys of moribund fish, in contrast to very limited replication in surviving fish. To probe the host immune response to viral infection at the level of gene expression, we identified virus-responsive genes using suppression subtractive hybridization (SSH) in head kidney tissues, the principal immune organ of fish, from moribund and surviving crucian carps after viral challenge. From the moribund SSH library, 363 expressed sequence tags (ESTs) were clustered to 234 unigenes (including 15 singletons and 45 contigs). From the survivor SSH library, 599 ESTs was clustered to 549 unigenes (including 107 singletons and 105 contigs). We further analyzed the transcriptional levels of all immune-related genes by quantitative real-time RT-PCR, which confirmed the upregulation of 90.48 % of these genes. The significantly upregulated immune-related genes identified in this study can serve as candidate marker genes for acute CyHV-2 infection. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Virology Springer Journals

Comparative analysis of differential gene expression in kidney tissues of moribund and surviving crucian carp ( Carassius auratus gibelio ) in response to cyprinid herpesvirus 2 infection

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Publisher
Springer Vienna
Copyright
Copyright © 2014 by Springer-Verlag Wien
Subject
Biomedicine; Virology; Medical Microbiology; Infectious Diseases
ISSN
0304-8608
eISSN
1432-8798
D.O.I.
10.1007/s00705-014-2011-9
Publisher site
See Article on Publisher Site

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