Sequence and expression of MHC-DPB1 molecules of the New World monkey Aotus nancymaae, a primate model for Plasmodium falciparum.
Aotus nancymaae represents an animal model for the pre-clinical evaluation of blood-stage vaccine candidates against Plasmodium falciparum and Plasmodium vivax. We present here the nucleotide sequences of exon 2 and 3 of MHC-DPB1 genes. In a group of seven unrelated animals captured in the wild, three alleles of MHC-DPB1 exon 2 could be identified. Phylogenetic analysis shows that in contrast to Aona- DRB and - DQB, the Aona-DPB1exon 2 amino acid sequences cluster in a species-specific manner. No evidence could be found for the conservation of allelic lineages pre-dating the divergence of Old and New World monkeys. Additionally, two nucleotide sequences of MHC-DPB1 exon 3 could be identified differing in one synonymous base exchange. Phylogenetic analysis of Aona-DPB1exon 3 amino acid sequence shows that it clusters together with human sequences separately from the New World monkey Saguinus oedipus. Aona-DP heterodimers are expressed on the surface of Aotus cells, as detected by staining with a cross-reactive monoclonal antibody, and can therefore present antigenic peptides to the cellular immune system.
Swiss Tropical Institute, Socinstrasse 57, 4002 Basel, Switzerland.
Diana
D
Diaz
Claudia A
CA
Daubenberger
Tatjana
T
Zalac
Raul
R
Rodriguez
Manuel Elkin
ME
Patarroyo
D000818:Animals; D016645:Aotidae / Q000235:genetics*; D001483:Base Sequence; D002478:Cells, Cultured; D005091:Exons; D005802:Genes, MHC Class II; D006682:HLA-DP Antigens / Q000235:genetics* / Q000378:metabolism*; D059868:HLA-DP beta-Chains; D006683:HLA-DQ Antigens / Q000378:metabolism; D006684:HLA-DR Antigens / Q000378:metabolism; D006801:Humans; D008213:Lymphocyte Activation; D008969:Molecular Sequence Data; D010802:Phylogeny; D011110:Polymorphism, Genetic; D016415:Sequence Alignment
D006682:HLA-DP Antigens; D059868:HLA-DP beta-Chains; C071170:HLA-DPB1 antigen; D006683:HLA-DQ Antigens; D006684:HLA-DR Antigens