Human self-protein CD8+ T-cell epitopes are both positively and negatively selected.
Human self-protein CD8+ T-cell epitopes are both positively and negatively selected.
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DOI:
10.1002/eji.200838353
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发表时间:
2009-04
影响因子:
5.4
通讯作者:
Louzoun Y
中科院分区:
文献类型:
--
作者:
Almani M;Raffaeli S;Vider-Shalit T;Tsaban L;Fishbain V;Louzoun Y
The cellular immune system recognizes self epitopes in the context of MHC-I molecules. The immunological general view presumes that these self epitopes are just a background, both positively and negatively selecting T cells. We here estimate the number of epitopes in each human protein for many frequent HLA alleles, and a score representing over or under presentation of epitopes on these proteins. We further show that there is a clear selection for the presentation of specific self proteins types. Proteins presenting many epitopes include for example AIRE upregulated Tissue specific antigens, immune system receptors and proteins with a high expression level. On the other hand, proteins that may be considered less “useful” for the immune system, such as low expression level proteins, are under presented. We combine our epitope estimate with SNP measures to show that this selection can be directly observed through the fraction of non-synonymous SNPs (replacement fraction), which is significantly higher inside epitopes than outside
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影响因子:
64.5
作者:
EARLY, P;HUANG, H;HOOD, L
通讯作者:
HOOD, L
影响因子:
9.5
作者:
Chalifa-Caspi, Vered;Shmueli, Orit;Lancet, Doron
通讯作者:
Lancet, Doron
影响因子:
3.2
作者:
Bui, HH;Sidney, J;Sette, A
通讯作者:
Sette, A
DOI:
10.1073/pnas.73.10.3628
发表时间:
1976-01-01
影响因子:
11.1
作者:
HOZUMI, N;TONEGAWA, S
通讯作者:
TONEGAWA, S
影响因子:
56.9
作者:
KIRKPATRICK, S;GELATT, CD;VECCHI, MP
通讯作者:
VECCHI, MP