Antigen processing influences HIV-specific cytotoxic T lymphocyte immunodominance.
Although cytotoxic T lymphocytes (CTLs) in people infected with human immunodeficiency virus type 1 can potentially target multiple virus epitopes, the same few are recognized repeatedly. We show here that CTL immunodominance in regions of the human immunodeficiency virus type 1 group-associated ant...
| Main Authors: | , , , , , , , , , , , , , , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
2009
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| _version_ | 1826286151724433408 |
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| author | Tenzer, S Wee, E Burgevin, A Stewart-Jones, G Friis, L Lamberth, K Chang, C Harndahl, M Weimershaus, M Gerstoft, J Akkad, N Klenerman, P Fugger, L Jones, E Mcmichael, A Buus, S Schild, H van Endert, P Iversen, A |
| author_facet | Tenzer, S Wee, E Burgevin, A Stewart-Jones, G Friis, L Lamberth, K Chang, C Harndahl, M Weimershaus, M Gerstoft, J Akkad, N Klenerman, P Fugger, L Jones, E Mcmichael, A Buus, S Schild, H van Endert, P Iversen, A |
| author_sort | Tenzer, S |
| collection | OXFORD |
| description | Although cytotoxic T lymphocytes (CTLs) in people infected with human immunodeficiency virus type 1 can potentially target multiple virus epitopes, the same few are recognized repeatedly. We show here that CTL immunodominance in regions of the human immunodeficiency virus type 1 group-associated antigen proteins p17 and p24 correlated with epitope abundance, which was strongly influenced by proteasomal digestion profiles, affinity for the transporter protein TAP, and trimming mediated by the endoplasmatic reticulum aminopeptidase ERAAP, and was moderately influenced by HLA affinity. Structural and functional analyses demonstrated that proteasomal cleavage 'preferences' modulated the number and length of epitope-containing peptides, thereby affecting the response avidity and clonality of T cells. Cleavage patterns were affected by both flanking and intraepitope CTL-escape mutations. Our analyses show that antigen processing shapes CTL response hierarchies and that viral evolution modifies cleavage patterns and suggest strategies for in vitro vaccine optimization. |
| first_indexed | 2024-03-07T01:39:32Z |
| format | Journal article |
| id | oxford-uuid:965efdb0-cf1c-4153-8e96-ab1f1d2b75ea |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T01:39:32Z |
| publishDate | 2009 |
| record_format | dspace |
| spelling | oxford-uuid:965efdb0-cf1c-4153-8e96-ab1f1d2b75ea2022-03-26T23:52:29ZAntigen processing influences HIV-specific cytotoxic T lymphocyte immunodominance.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:965efdb0-cf1c-4153-8e96-ab1f1d2b75eaEnglishSymplectic Elements at Oxford2009Tenzer, SWee, EBurgevin, AStewart-Jones, GFriis, LLamberth, KChang, CHarndahl, MWeimershaus, MGerstoft, JAkkad, NKlenerman, PFugger, LJones, EMcmichael, ABuus, SSchild, Hvan Endert, PIversen, AAlthough cytotoxic T lymphocytes (CTLs) in people infected with human immunodeficiency virus type 1 can potentially target multiple virus epitopes, the same few are recognized repeatedly. We show here that CTL immunodominance in regions of the human immunodeficiency virus type 1 group-associated antigen proteins p17 and p24 correlated with epitope abundance, which was strongly influenced by proteasomal digestion profiles, affinity for the transporter protein TAP, and trimming mediated by the endoplasmatic reticulum aminopeptidase ERAAP, and was moderately influenced by HLA affinity. Structural and functional analyses demonstrated that proteasomal cleavage 'preferences' modulated the number and length of epitope-containing peptides, thereby affecting the response avidity and clonality of T cells. Cleavage patterns were affected by both flanking and intraepitope CTL-escape mutations. Our analyses show that antigen processing shapes CTL response hierarchies and that viral evolution modifies cleavage patterns and suggest strategies for in vitro vaccine optimization. |
| spellingShingle | Tenzer, S Wee, E Burgevin, A Stewart-Jones, G Friis, L Lamberth, K Chang, C Harndahl, M Weimershaus, M Gerstoft, J Akkad, N Klenerman, P Fugger, L Jones, E Mcmichael, A Buus, S Schild, H van Endert, P Iversen, A Antigen processing influences HIV-specific cytotoxic T lymphocyte immunodominance. |
| title | Antigen processing influences HIV-specific cytotoxic T lymphocyte immunodominance. |
| title_full | Antigen processing influences HIV-specific cytotoxic T lymphocyte immunodominance. |
| title_fullStr | Antigen processing influences HIV-specific cytotoxic T lymphocyte immunodominance. |
| title_full_unstemmed | Antigen processing influences HIV-specific cytotoxic T lymphocyte immunodominance. |
| title_short | Antigen processing influences HIV-specific cytotoxic T lymphocyte immunodominance. |
| title_sort | antigen processing influences hiv specific cytotoxic t lymphocyte immunodominance |
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