Imperial College London
Alternate

ProfessorJillGilmour

Faculty of Medicine, Department of Infectious Disease

Honorary Principal Research Fellow 
 
 
 
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Contact

 

+44 (0)20 3315 5098j.gilmour

 
 
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Location

 

J.2.3 Immunology DepartmentChelsea and Westminster HospitalChelsea and Westminster Campus

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Summary

 

Publications

Citation

BibTex format

@article{Michelo:2023:10.3390/vaccines11020472,
author = {Michelo, CM and Fiore-Gartland, A and Dalel, JA and Hayes, P and Tang, J and McGowan, E and Kilembe, W and Fernandez, N and Gilmour, J and Hunter, E},
doi = {10.3390/vaccines11020472},
journal = {Vaccines},
title = {Cohort-Specific Peptide Reagents Broaden Depth and Breadth Estimates of the CD8 T Cell Response to HIV-1 Gag Potential T Cell Epitopes},
url = {http://dx.doi.org/10.3390/vaccines11020472},
volume = {11},
year = {2023}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - An effective HIV vaccine will need to stimulate immune responses against the sequence diversity presented in circulating virus strains. In this study, we evaluate breadth and depth estimates of potential T-cell epitopes (PTEs) in transmitted founder virus sequence-derived cohort-specific peptide reagents against reagents representative of consensus and global sequences. CD8 T-cells from twenty-six HIV-1+ PBMC donor samples, obtained at 1-year post estimated date of infection, were evaluated. ELISpot assays compared responses to 15mer consensus (n = 121), multivalent-global (n = 320), and 10mer multivalent cohort-specific (n = 300) PTE peptides, all mapping to the Gag antigen. Responses to 38 consensus, 71 global, and 62 cohort-specific PTEs were confirmed, with sixty percent of common global and cohort-specific PTEs corresponding to consensus sequences. Both global and cohort-specific peptides exhibited broader epitope coverage compared to commonly used consensus reagents, with mean breadth estimates of 3.2 (global), 3.4 (cohort) and 2.2 (consensus) epitopes. Global or cohort peptides each identified unique epitope responses that would not be detected if these peptide pools were used alone. A peptide set designed around specific virologic and immunogenetic characteristics of a target cohort can expand the detection of CD8 T-cell responses to epitopes in circulating viruses, providing a novel way to better define the host response to HIV-1 with implications for vaccine development.
AU  - Michelo,CM
AU  - Fiore-Gartland,A
AU  - Dalel,JA
AU  - Hayes,P
AU  - Tang,J
AU  - McGowan,E
AU  - Kilembe,W
AU  - Fernandez,N
AU  - Gilmour,J
AU  - Hunter,E
DO  - 10.3390/vaccines11020472
PY  - 2023///
SN  - 2076-393X
TI  - Cohort-Specific Peptide Reagents Broaden Depth and Breadth Estimates of the CD8 T Cell Response to HIV-1 Gag Potential T Cell Epitopes
T2  - Vaccines
UR  - http://dx.doi.org/10.3390/vaccines11020472
UR  - https://www.ncbi.nlm.nih.gov/pubmed/36851349
UR  - http://hdl.handle.net/10044/1/105581
VL  - 11
ER  -
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