Immune selection for altered antigen processing leads to cytotoxic T lymphocyte escape in chronic HIV-1 infection.
Immune selection for altered antigen processing leads to cytotoxic T lymphocyte escape in chronic HIV-1 infection.
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在慢性 HIV-1 感染中,针对改变的抗原处理的免疫选择导致细胞毒性 T 淋巴细胞逃逸。
DOI:
10.1084/jem.20031982
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发表时间:
2004-04-05
影响因子:
15.3
通讯作者:
Goulder, PJR
中科院分区:
文献类型:
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作者:
Draenert, R;Le Gall, S;Pfafferott, KJ;Leslie, AJ;Chetty, P;Brander, C;Holmes, EC;Chang, SC;Feeney, ME;Addo, MM;Ruiz, LD;Ramduth, D;Jeena, P;Altfeld, M;Thomas, S;Tang, TH;Verrill, CL;Dixon, C;Prado, JG;Kiepiela, P;Martinez-Picado, J;Walker, BD;Goulder, PJR
Mutations within cytotoxic T lymphocyte (CTL) epitopes impair T cell recognition, but escape mutations arising in flanking regions that alter antigen processing have not been defined in natural human infections. In human histocompatibility leukocyte antigen (HLA)-B57+ HIV-infected persons, immune selection pressure leads to a mutation from alanine to proline at Gag residue 146 immediately preceding the NH2 terminus of a dominant HLA-B57–restricted epitope, ISPRTLNAW. Although N-extended wild-type or mutant peptides remained well-recognized, mutant virus–infected CD4 T cells failed to be recognized by the same CTL clones. The A146P mutation prevented NH2-terminal trimming of the optimal epitope by the endoplasmic reticulum aminopeptidase I. These results demonstrate that allele-associated sequence variation within the flanking region of CTL epitopes can alter antigen processing. Identifying such mutations is of major relevance in the construction of vaccine sequences.
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DOI:
10.1084/jem.190.9.1227
发表时间:
1999-11-01
期刊:
The Journal of experimental medicine
影响因子:
--
作者:
Lauvau G;Kakimi K;Niedermann G;Ostankovitch M;Yotnda P;Firat H;Chisari FV;van Endert PM
通讯作者:
van Endert PM
影响因子:
15.3
作者:
Kelleher, A D;Long, C;Holmes, E C;Allen, R L;Wilson, J;Conlon, C;Workman, C;Shaunak, S;Olson, K;Goulder, P;Brander, C;Ogg, G;Sullivan, J S;Dyer, W;Jones, I;McMichael, A J;Rowland-Jones, S;Phillips, R E
通讯作者:
Phillips, R E
影响因子:
15.9
作者:
Furman, MH;Ploegh, HL
通讯作者:
Ploegh, HL
影响因子:
64.8
作者:
Goulder, PJR;Brander, C;Walker, BD
通讯作者:
Walker, BD
影响因子:
64.8
作者:
Barouch, DH;Kunstman, J;Letvin, NL
通讯作者:
Letvin, NL