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Int. J. Mol. Sci. 2017, 18(5), 1020;

Characterization of Copy Number Variation’s Potential Role in Marek’s Disease

Department of Animal & Avian Sciences, University of Maryland, College Park, MD 20742, USA
Animal Genomics and Improvement Laboratory, USDA-ARS, Beltsville, MD 20705, USA
Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100864, China
College of Animal Science and Veterinary Medicine, Henan Agricultural University, Henan Innovative Engineering Research Center of Poultry Germplasm Resource, No. 95 Wenhua Road, Zhengzhou 450002, China
College of Animal Science and Technology, Northwest A & F University, Yangling 712100, China
Department of Animal Production, Faculty of Agriculture, Cairo University, Giza, Egypt
USDA, Agriculture Research Service, Avian Disease and Oncology Laboratory, East Lansing, MI 48823, USA
These authors contributed equally to this work.
Authors to whom correspondence should be addressed.
Academic Editor: Klaus Wimmers
Received: 27 March 2017 / Revised: 22 April 2017 / Accepted: 4 May 2017 / Published: 9 May 2017
(This article belongs to the Special Issue Exploring the Genotype–Phenotype Map to Explain Complex Traits)
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Marek’s Disease (MD) is a highly contagious pathogenic and oncogenic disease primarily affecting chickens. Chicken Lines 63 and 72, as well as their recombinant congenic strains (RCS) with varied susceptibility to MD, are ideal models to study the complex mechanisms of genetic resistance to MD. In this study, we investigated copy number variation (CNV) in these inbred chicken lines using the Affymetrix Axiom HD 600 K SNP genotyping array. We detected 393 CNV segments across all ten chicken lines, of which 12 CNVs were specifically identified in Line 72. We then assessed genetic structure based on CNV and observed markedly different patterns. Finally, we validated two deletion events in Line 72 and correlated them with genes expression using qPCR and RNA-seq, respectively. Our combined results indicated that these two CNV deletions were likely to contribute to MD susceptibility. View Full-Text
Keywords: copy number variation; chicken; inbred lines; recombinant congenic strains (RCS); Marek’s disease; RNA-sequencing copy number variation; chicken; inbred lines; recombinant congenic strains (RCS); Marek’s disease; RNA-sequencing

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Xu, L.; He, Y.; Ding, Y.; Sun, G.; Carrillo, J.A.; Li, Y.; Ghaly, M.M.; Ma, L.; Zhang, H.; Liu, G.E.; Song, J. Characterization of Copy Number Variation’s Potential Role in Marek’s Disease. Int. J. Mol. Sci. 2017, 18, 1020.

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