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    • 6. 发明申请
    • SUBUNIT VACCINES WITH A2 SUPERMOTIFS
    • 亚超疫苗与A2超重
    • WO2002061435A2
    • 2002-08-08
    • PCT/US2002/002708
    • 2002-01-29
    • EPIMMUNE INC.SIDNEY, JohnSETTE, AlessandroGREY, Howard, M.SOUTHWOOD, Scott
    • SIDNEY, JohnSETTE, AlessandroGREY, Howard, M.SOUTHWOOD, Scott
    • G01N33/68
    • G01N33/6812G01N2500/04
    • Methods to design vaccines which are effective in individuals bearing A2 supertype alleles are described. Single amino acid substitution analogs of known A2-supertype binding peptides, and large peptide libraries were utilized to rigorously define the peptide binding specificities of A2-supertype molecules. While each molecule was noted to have unique preferences, large overlaps in specificity were found. The presence of the hydrophobic and aliphatic residues L, I, V, M, A, T, and Q in positon 2 of peptide ligands was commonly tolerated by A2-supertype molecules. L, I, V, M, A, and T were tolerated at the C-terminus. While examination of secondary influences on peptide binding revealed allele specific preferences, shared features could also be identified, and were utilized to define an A2-supermotif. Shared features also correlate with cross-reactivity; over 70% of the peptides that bound A*0201 with high affinity were found to bind at least 2 other A2-supertype molecules. Finally, the coefficients for use in the development of algorithms for the prediction of peptide binding to A2-supertype molecules are provided.
    • 描述了在携带A2超型等位基因的个体中有效的疫苗的设计方法。 使用已知的A2-超型结合肽的单个氨基酸取代类似物和大的肽文库来严格限定A2-超型分子的肽结合特异性。 虽然每个分子被注意到具有独特的偏好,但发现了特异性的大的重叠。 肽配体的位置2中疏水和脂族残基L,I,V,M,A,T和Q的存在通常被A2-超型分子所耐受。 L,I,V,M,A和T在C末端耐受。 虽然检测对肽结合的次要影响揭示了等位基因特异性偏好,但也可以鉴定共享特征,并用于定义A2超超敏。 共享特征也与交叉反应性相关; 发现以高亲和力结合A * 0201的肽的70%以上结合至少2种其它的A2-超型分子。 最后,提供了用于开发用于预测肽结合A2-超型分子的算法的系数。