PMID- 8605919 OWN - NLM STAT- MEDLINE DCOM- 19960520 LR - 20061115 IS - 0014-2980 (Print) IS - 0014-2980 (Linking) VI - 26 IP - 3 DP - 1996 Mar TI - Immunization with glycosylated Kb-binding peptides generates carbohydrate-specific, unrestricted cytotoxic T cells. PG - 544-51 AB - Cytotoxic T cells (CTL) recognize target proteins as short peptides presented by major histocompatibility complex (MHC) class I restriction elements. However, there is also evidence for peptide-independent T cell receptor (TCR) recognition of target proteins and non-protein structures. How such T cell responses are generated is presently unclear. We generated carbohydrate (CHO)-specific, MHC-unrestricted CTL responses by coupling di- and trisaccharides to Kb- or Db-binding peptides for direct immunization in mice. Four peptides and three CHO have been analyzed with the CHO either in terminal or central position on the carrier peptide. With two of these glycopeptides, with galabiose (Gal alpha 1-4Gal; Gal2) bound to a homocysteine (via an ethylene spacer arm) in position 4 or 6 in a vesicular stomatitis virus nucleoprotein-derived peptide (RGYVYQGL binding to Kb), CTL were generated which preferentially killed target cells treated with glycopeptide compared to those treated with the core peptide. Polyclonal CTL were also found to kill target cells expressing the same Gal2 epitope in a glycolipid. By fractionation of CTL, preliminary data indicate that glycopeptide-specific Kb-restricted CTL and unrestricted CHO-specific CTL belong to different T cell populations with regard to TCR expression. The results demonstrate that hapten-specific unrestricted CTL responses can be generated with MHC class I-binding carrier peptides. Different models that might explain the generation of such responses are discussed. FAU - Abdel-Motal, U M AU - Abdel-Motal UM AD - Department of Medical Biochemistry and Microbiology, University of Gothenburg, Sweden. FAU - Berg, L AU - Berg L FAU - Rosen, A AU - Rosen A FAU - Bengtsson, M AU - Bengtsson M FAU - Thorpe, C J AU - Thorpe CJ FAU - Kihlberg, J AU - Kihlberg J FAU - Dahmen, J AU - Dahmen J FAU - Magnusson, G AU - Magnusson G FAU - Karlsson, K A AU - Karlsson KA FAU - Jondal, M AU - Jondal M LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Germany TA - Eur J Immunol JT - European journal of immunology JID - 1273201 RN - 0 (Carbohydrates) RN - 0 (Epitopes) RN - 0 (Glycopeptides) RN - 0 (H-2 Antigens) RN - 0 (H-2Kb protein, mouse) SB - IM MH - Amino Acid Sequence MH - Animals MH - Carbohydrate Sequence MH - Carbohydrates/*immunology MH - Epitopes/*immunology MH - Glycopeptides/*immunology/metabolism/pharmacology MH - Glycosylation MH - H-2 Antigens/*immunology/*metabolism MH - *Immunization MH - *Lymphocyte Activation/drug effects MH - Mice MH - Molecular Sequence Data MH - T-Lymphocytes, Cytotoxic/*immunology EDAT- 1996/03/01 00:00 MHDA- 1996/03/01 00:01 CRDT- 1996/03/01 00:00 PHST- 1996/03/01 00:00 [pubmed] PHST- 1996/03/01 00:01 [medline] PHST- 1996/03/01 00:00 [entrez] AID - 10.1002/eji.1830260307 [doi] PST - ppublish SO - Eur J Immunol. 1996 Mar;26(3):544-51. doi: 10.1002/eji.1830260307.