Generation of in silico predicted coxsackievirus B3-derived MHC class I epitopes by proteasomes.
Amino Acids
; 39(1): 243-55, 2010 Jun.
Article
en En
| MEDLINE
| ID: mdl-19997756
ABSTRACT
Proteasomes are known to be the main suppliers of MHC class I (MHC-I) ligands. In an attempt to identify coxsackievirus B3 (CVB3)-MHC-I epitopes, a combined approach of in silico MHC-I/transporters associated with antigen processing (TAP)-binding and proteasomal cleavage prediction was applied. Accordingly, 13 potential epitopes originating from the structural and non-structural protein region of CVB3 were selected for further in vitro processing analysis by proteasomes. Mass spectrometry demonstrated the generation of seven of the 13 predicted MHC-I ligands or respective ligand precursors by proteasomes. Detailed processing analysis of three adjacent MHC-I ligands with partially overlapping sequences, i.e. VP2(273-281), VP2(284-292) and VP2(285-293), revealed the preferential generation predominantly of the VP2(285-293) epitope by immunoproteasomes due to altered cleavage site preferences. The VP2(285-293) peptide was identified to be a high affinity binder, rendering VP2(285-293) a likely candidate for CD8 T cell immunity in CVB3 infection. In conclusion, the concerted usage of different in silico prediction methods and in vitro epitope processing/presentation studies was supportive in the identification of CVB3 MHC-I epitopes.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Antígenos de Histocompatibilidad Clase I
/
Enterovirus Humano B
/
Biología Computacional
/
Complejo de la Endopetidasa Proteasomal
/
Epítopos
Tipo de estudio:
Prognostic_studies
/
Risk_factors_studies
Límite:
Animals
Idioma:
En
Revista:
Amino Acids
Asunto de la revista:
BIOQUIMICA
Año:
2010
Tipo del documento:
Article
País de afiliación:
Alemania