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HIV Molecular Immunology Database

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Found 1 matching record:

Displaying record number 97

HXB2 Location  Gag(77-85)   Gag Epitope Map
View variants at this location
Epitope SLYNTVATL   Epitope Alignment
Variants
SLfNTVAvL   observed variant
Epitope Name SL9
Species (MHC/HLA human(A*02:01)

Variant Details

Showing 1 of 9 variants.


Variant ID.  366
Epitope Seq.  SLYNTVATL
Variant Seq.  SLfNTVAvL
Mutations Y/F T/V
Epitope Location Y3F T8V
HXB2 Location Y79F T84V
Mutation Type OV: observed variant
Method Chromium-release assay, Sequence
Note Variant was found in two epitope non-responders, Donor 606 and Donor in 25% and 38% of the clones, respectively. [Goulder1997].

References

Goulder1997 P. J. Goulder, A. K. Sewell, D. G. Lalloo, D. A. Price, J. A. Whelan, J. Evans, G. P. Taylor, G. Luzzi, P. Giangrande, R. E. Phillips, and A. J. McMichael. Patterns of Immunodominance in HIV-1-Specific Cytotoxic T Lymphocyte Responses in Two Human Histocompatibility Leukocyte Antigens (HLA)-Identical Siblings with HLA-A*0201 Are Influenced by Epitope Mutation. J. Exp. Med., 8:1423-1433, 1997. Primary human immunodeficiency virus (HIV) infection is controlled principally by HIV-specific cytotoxic T lymphocytes (CTL) to a steady- state level of virus load, which strongly influences the ultimate rate of progression to disease. Epitope selection by CTL may be an important determinant of the degree of immune control over the virus. This report describes the CTL responses of two HLA-identical hemophiliac brothers who were exposed to identical batches of Factor VIII and became seropositive within 10 wk of one another. Both have HLA-A*0201. The CTL responses of the two siblings were very dissimilar, one donor making strong responses to two epitopes within p17 Gag (HLA-A*0201-restricted SLYNTVATL and HLA-A3-restricted RLRPGGKKK). The sibling responded to neither epitope, but made strong responses to two epitopes presented by HLA-B7. This was not the result of differences in presentation of the epitopes. However, mutations in both immunodominant epitopes of the p17 Gag responder were seen in proviral sequences of the nonresponder. We then documented the CTL responses to two HLA-A*0201-restricted epitopes, in Gag (SLYNTVATL) and Pol (ILKEPVHGV) in 22 other HIV-infected donors with HLA-A*0201. The majority (71\%) generated responses to the Gag epitope. In the 29\% of donors failing to respond to the Gag epitope in standard assays, there was evidence of low frequency memory CTL responses using peptide stimulation of PBMC, and most of these donors also showed mutations in or around the Gag epitope. PubMed ID: 9126923. Show all entries for this paper.

Goulder1997e P. Goulder, D. Price, M. Nowak, S. Rowland-Jones, R. Phillips, and A. McMichael. Co-Evolution of Human Immunodeficiency Virus and Cytotoxic T-Lymphocyte Responses. Immunol. Rev., 159:17-29, 1997. PubMed ID: 9416500. Show all entries for this paper.


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