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Identification of linear B-cell epitopes on the phosphoprotein of canine distemper virus using four monoclonal antibodies. 2018

Shuang Li, and Li Yi, and Zhigang Cao, and Yuening Cheng, and Mingwei Tong, and Jianke Wang, and Peng Lin, and Shipeng Cheng
Institude of Special Animal and Plant Sciences of Chinese Academy of Agricultural Sciences,4899 Juye Street, Changchun, Jilin Province 130122, PR China.

The highly contagious canine distemper virus (CDV) is a non-segmented single-stranded negative-sense RNA virus, which belongs to the Morbillivirus genus of the Paramyxoviridae family. The phosphoprotein (P) of CDV plays the important role in the virus replication and pathogenesis. In this study, we characterized four monoclonal antibodies (MAbs), designated as Pc7, Pc8, Pc11 and Pc25 MAbs against the P protein of CDV-PS strain. A series of overlapping P protein-derived peptides representing the CDV-PS phosphoprotein (aa232-507) were screened to identify linear peptide epitopes recognized by each MAb. Finally, four epitopes, 238SHGMGIVAGSTN249 (E2-9), 264GPSVSAENVRQ274 (E6-2), 390INPELRPIIGR400 (E27-2) and 252TQSALKSTG260 (E4-9), are minimal linear epitopes recognized by the Pc7, Pc8, Pc11 and Pc25 MAbs, respectively. Each identified B-cell epitope was able to be recognized by CDV positive dog serum. Alignment analysis of the amino acid sequences indicated that the linear B-cell epitope of the Pc11 MAb is relatively conserved among different CDV strains, but the linear B-cell epitopes recognized by Pc7, Pc8 and Pc25 MAbs are not conserved among CDV strains. Our results revealed that the E27-2 peptide might be a common B-cell binding epitope of CDV antibodies. These findings may provide a useful basis for the development of new diagnostic assays for CDV.

UI MeSH Term Description Entries
D010750 Phosphoproteins Phosphoprotein
D011994 Recombinant Proteins Proteins prepared by recombinant DNA technology. Biosynthetic Protein,Biosynthetic Proteins,DNA Recombinant Proteins,Recombinant Protein,Proteins, Biosynthetic,Proteins, Recombinant DNA,DNA Proteins, Recombinant,Protein, Biosynthetic,Protein, Recombinant,Proteins, DNA Recombinant,Proteins, Recombinant,Recombinant DNA Proteins,Recombinant Proteins, DNA
D002522 Chlorocebus aethiops A species of CERCOPITHECUS containing three subspecies: C. tantalus, C. pygerythrus, and C. sabeus. They are found in the forests and savannah of Africa. The African green monkey is the natural host of SIMIAN IMMUNODEFICIENCY VIRUS and is used in AIDS research. African Green Monkey,Cercopithecus aethiops,Cercopithecus griseoviridis,Cercopithecus griseus,Cercopithecus pygerythrus,Cercopithecus sabeus,Cercopithecus tantalus,Chlorocebus cynosuros,Chlorocebus cynosurus,Chlorocebus pygerythrus,Green Monkey,Grivet Monkey,Lasiopyga weidholzi,Malbrouck,Malbrouck Monkey,Monkey, African Green,Monkey, Green,Monkey, Grivet,Monkey, Vervet,Savanah Monkey,Vervet Monkey,Savannah Monkey,African Green Monkey,Chlorocebus cynosuro,Green Monkey, African,Green Monkeys,Grivet Monkeys,Malbrouck Monkeys,Malbroucks,Monkey, Malbrouck,Monkey, Savanah,Monkey, Savannah,Savannah Monkeys,Vervet Monkeys
D004217 Distemper Virus, Canine A species of MORBILLIVIRUS causing distemper in dogs, wolves, foxes, raccoons, and ferrets. Pinnipeds have also been known to contract Canine distemper virus from contact with domestic dogs. Canine Distemper Virus,Canine Distemper Viruses,Distemper Viruses, Canine
D004285 Dogs The domestic dog, Canis familiaris, comprising about 400 breeds, of the carnivore family CANIDAE. They are worldwide in distribution and live in association with people. (Walker's Mammals of the World, 5th ed, p1065) Canis familiaris,Dog
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D000911 Antibodies, Monoclonal Antibodies produced by a single clone of cells. Monoclonal Antibodies,Monoclonal Antibody,Antibody, Monoclonal
D000914 Antibodies, Viral Immunoglobulins produced in response to VIRAL ANTIGENS. Viral Antibodies
D014709 Vero Cells A CELL LINE derived from the kidney of the African green (vervet) monkey, (CHLOROCEBUS AETHIOPS) used primarily in virus replication studies and plaque assays. Cell, Vero,Cells, Vero,Vero Cell
D014764 Viral Proteins Proteins found in any species of virus. Gene Products, Viral,Viral Gene Products,Viral Gene Proteins,Viral Protein,Protein, Viral,Proteins, Viral

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