A comprehensive screen for chicken proteins that interact with proteins unique to virulent strains of Marek's disease virus.
Genetic resistance to Marek's disease (MD) has been proposed as a method to augment current vaccinal control of MD. Although it is possible to identify QTL and candidate genes that are associated with MD resistance, it is necessary to integrate functional screens with linkage analysis to confirm the identity of true MD resistance genes. To help achieve this objective, a comprehensive 2-hybrid screen was conducted using genes unique to virulent Marek's disease virus (MDV) strains. Potential MDV-host protein interactions were tested by an in vitro binding assay to confirm the initial two-hybrid results. As a result, 7 new MDV-chicken protein interactions were identified and included the chicken proteins MHC class II beta (BLB) and invariant (Ii) chain (CD74), growth-related translationally controlled tumor protein (TPT1), complement component Clq-binding protein (C1QBP), retinoblastoma-binding protein 4 (RBBP4), and alpha-enolase (ENO1). Mapping of the encoding chicken genes suggests that BLB, the gene for MHC class II beta chain, is a positional candidate gene. In addition, the known functions of the chicken proteins suggest mechanisms that MDV might use to evade the chicken immune system and alter host gene regulation. Taken together, our results indicate that integrated genomic methods provide a powerful strategy to gain insights on complex biological processes and yield a manageable number of genes and pathways for further characterization.
Department of Microbiology and Molecular Genetics, Michigan State University, East Lansing, Michigan 48824, USA.
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M
Niikura
H C
HC
Liu
J B
JB
Dodgson
H H
HH
Cheng
D000818:Animals; D000944:Antigens, Differentiation, B-Lymphocyte / Q000235:genetics / Q000378:metabolism; D014408:Biomarkers, Tumor / Q000235:genetics / Q000378:metabolism; D002352:Carrier Proteins / Q000235:genetics / Q000378:metabolism; D002645:Chickens / Q000235:genetics / Q000378:metabolism*; D004347:Drug Interactions; D008040:Genetic Linkage; D020022:Genetic Predisposition to Disease; D000949:Histocompatibility Antigens Class II / Q000235:genetics / Q000378:metabolism; D025922:Mardivirus / Q000737:chemistry / Q000235:genetics*; D008380:Marek Disease / Q000235:genetics; D010751:Phosphopyruvate Hydratase / Q000235:genetics / Q000378:metabolism; D011201:Poultry Diseases / Q000821:virology; D011506:Proteins / Q000235:genetics / Q000378:metabolism*; D012175:Retinoblastoma; D000090324:Tumor Protein, Translationally-Controlled 1; D020798:Two-Hybrid System Techniques; D014764:Viral Proteins / Q000378:metabolism*
D000944:Antigens, Differentiation, B-Lymphocyte; D014408:Biomarkers, Tumor; D002352:Carrier Proteins; D000949:Histocompatibility Antigens Class II; D011506:Proteins; D000090324:Tumor Protein, Translationally-Controlled 1; D014764:Viral Proteins; C007105:c1q-binding proteins; C045084:invariant chain; D010751:Phosphopyruvate Hydratase