PMID- 10599997 OWN - NLM STAT- MEDLINE DCOM- 20000124 LR - 20201219 IS - 0198-8859 (Print) IS - 0198-8859 (Linking) VI - 60 IP - 11 DP - 1999 Nov TI - Immunization with the HBV core 18-27 epitope elicits CTL responses in humans expressing different HLA-A2 supertype molecules. PG - 1013-7 AB - The human leukocyte antigen (HLA)-A2 restricted HBV core 18-27 epitope is immunodominant in the context of HLA-A2.1 and subdominant in the context of the other HLA-A2 supertype molecules, as defined by frequency of recognition by memory cytotoxic T lymphocyte (CTL) responses from acute hepatitis B virus (HBV) patients, and on the basis of its binding affinity to purified HLA molecules in vitro. Herein, we show that immunization with a lipopeptide containing HBV core 18-27 epitope induces CTL responses in patients expressing different HLA-A2 supertype molecules, with indistinguishable frequency and magnitude. No difference in responses was noted between patients expressing either one or two different HLA-A2 supertype molecules. Thus, complexes of HBV core 18-27 bound to different HLA-A2 supertype alleles do not appear to act as altered peptide ligands, and do not cross antagonize CTL responses. These results substantiate the immunological relevance of the HLA supertypes concept, and illustrate its potential usefulness for the development of vaccines. FAU - Livingston, B D AU - Livingston BD AD - Epimmune, Inc., San Diego, California 92121, USA. blivingston@epimmune.com FAU - Crimi, C AU - Crimi C FAU - Fikes, J AU - Fikes J FAU - Chesnut, R W AU - Chesnut RW FAU - Sidney, J AU - Sidney J FAU - Sette, A AU - Sette A LA - eng PT - Journal Article PL - United States TA - Hum Immunol JT - Human immunology JID - 8010936 RN - 0 (HLA-A2 Antigen) RN - 0 (Hepatitis B Core Antigens) RN - 0 (Hepatitis B Vaccines) RN - 0 (Immunodominant Epitopes) RN - 0 (Lipopeptides) RN - 0 (Lipoproteins) RN - 0 (Peptide Fragments) RN - 0 (Theradigm-HBV) SB - IM MH - Acute Disease MH - Alleles MH - Amino Acid Sequence MH - *HLA-A2 Antigen/classification/genetics/metabolism MH - Hepatitis B/genetics/*immunology/therapy MH - *Hepatitis B Core Antigens/genetics/metabolism MH - Hepatitis B Vaccines/pharmacology MH - Hepatitis B virus/genetics/*immunology MH - Humans MH - Immunization MH - Immunodominant Epitopes/genetics/metabolism MH - Immunologic Memory MH - In Vitro Techniques MH - Lipopeptides MH - Lipoproteins/pharmacology MH - Peptide Fragments/pharmacology MH - Protein Binding MH - T-Lymphocytes, Cytotoxic/*immunology EDAT- 1999/12/22 00:00 MHDA- 1999/12/22 00:01 CRDT- 1999/12/22 00:00 PHST- 1999/12/22 00:00 [pubmed] PHST- 1999/12/22 00:01 [medline] PHST- 1999/12/22 00:00 [entrez] AID - S0198-8859(99)00103-2 [pii] AID - 10.1016/s0198-8859(99)00103-2 [doi] PST - ppublish SO - Hum Immunol. 1999 Nov;60(11):1013-7. doi: 10.1016/s0198-8859(99)00103-2.