Viral suppression of multiple escape mutants by de novo CD8+ T cell responses in a human immunodeficiency virus-1 Infected elite suppressor
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- 作者：Karen A O’Connell (1)
Robert W Hegarty (1)
Robert F Siliciano (1) (2)
Joel N Blankson (1) - 刊名：Retrovirology
- 出版年：2011
- 出版时间：December 2011
- 年：2011
- 卷：8
- 期：1
- 全文大小：381KB
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Robert W Hegarty (1)
Robert F Siliciano (1) (2)
Joel N Blankson (1)
1. Department of Medicine, Johns Hopkins University School of Medicine, 733 N. Broadway, Baltimore, MD, 21205, USA
2. Howard Hughes Medical Institute, Johns Hopkins University School of Medicine, 733 N. Broadway, Baltimore, MD, 21205, USA - ISSN：1742-4690
文摘
Elite suppressors or controllers (ES) are HIV-1 infected patients who maintain undetectable viral loads without treatment. While HLA-B*57-positive ES are usually infected with virus that is unmutated at CTL epitopes, a single, dominant variant containing CTL escape mutations is typically seen in plasma during chronic infection. We describe an ES who developed seven distinct and rare escape variants at an HLA-B*57-restricted Gag epitope over a five year period. Interestingly, he developed proliferative, de novo CTL responses that suppressed replication of each of these variants. These responses, in combination with low viral fitness of each variant, may contribute to sustained elite control in this ES.