Abstract:
:Cytotoxic T lymphocytes (CTLs) are important for the control of virus replication during respiratory infections. For human metapneumovirus (hMPV), an H-2(d)-restricted CTL epitope in the M2-2 protein has been described. In this study, we screened the hMPV F, G, N, M, M2-1, and M2-2 proteins using three independent algorithms to predict H-2(d) CTL epitopes in BALB/c mice. A dominant epitope (GYIDDNQSI) in positions 81 to 89 of the antitermination factor M2-1 and a subdominant epitope (SPKAGLLSL) in N(307-315) were detected during the anti-hMPV CTL response. Passive transfer of CD8(+) T-cell lines against M2-1(81-89) and N(307-315) protected Rag1(-/-) mice against hMPV challenge. Interestingly, diversification of CTL targets to include multiple epitopes was observed after repetitive infections. A subdominant response against the previously described M2-2 epitope was detected after the third infection. An understanding of the CTL response against hMPV is important for developing preventive and therapeutic strategies against the virus.
journal_name
J Viroljournal_title
Journal of virologyauthors
Melendi GA,Zavala F,Buchholz UJ,Boivin G,Collins PL,Kleeberger SR,Polack FPdoi
10.1128/JVI.02423-06subject
Has Abstractpub_date
2007-10-01 00:00:00pages
11461-7issue
20eissn
0022-538Xissn
1098-5514pii
JVI.02423-06journal_volume
81pub_type
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