PMID- 11476909 OWN - NLM STAT- MEDLINE DCOM- 20011011 LR - 20190906 IS - 0198-8859 (Print) IS - 0198-8859 (Linking) VI - 62 IP - 8 DP - 2001 Aug TI - Allele- and temperature-dependency of in vitro HLA class I assembly. PG - 858-68 AB - Allelic variations of in vitro HLA class I assembly have been investigated in both the absence and the presence of binding peptides by flow cytometry using human leukocyte antigen (HLA) class I alpha chains isolated by alkali treatment from cultured HLA homozygous B cells and polystyrene beads coated with anti-HLA class I alpha chain antibodies specific to the C-terminal segment (anti-HLA class I beads). The specificity of assembly was temperature dependent, while the stability of the assembled complex depended on the bound peptide. The efficiency of assembly was allele dependent and primarily ruled by the binding affinity of alpha chains with beta(2)m. Thus, an allele hierarchy could be defined for the binding of HLA-B alpha chain with beta(2)-microglobulin: B7, B18 > B35, B62 > B27, B51. Allele and temperature dependency was found in HLA class I reassembly on acid treated B cells. The HLA class I proteins, reassembled with specific single peptides, could be efficiently transferred to anti-HLA class I beads. These findings would be used to produce microspheres coupled at high surface density with oriented single-peptide loaded HLA class I molecules and also to improve the preparation efficiency of HLA class I tetramers by the use of site-specific biotinylation. FAU - Chersi, A AU - Chersi A AD - Regina Elena Institute for Cancer Research, Rome, Italy. FAU - Garzillo, C AU - Garzillo C FAU - Butler, R H AU - Butler RH FAU - Tanigaki, N AU - Tanigaki N LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Hum Immunol JT - Human immunology JID - 8010936 RN - 0 (HLA-A Antigens) RN - 0 (Histocompatibility Antigens Class I) RN - 0 (Peptides) SB - IM MH - *Alleles MH - B-Lymphocytes/immunology MH - Cells, Cultured MH - HLA-A Antigens/immunology MH - Histocompatibility Antigens Class I/*biosynthesis/genetics/immunology MH - Humans MH - In Vitro Techniques MH - Microspheres MH - Peptides/chemical synthesis/immunology/*metabolism MH - Protein Binding MH - Temperature EDAT- 2001/07/31 10:00 MHDA- 2001/10/12 10:01 CRDT- 2001/07/31 10:00 PHST- 2001/07/31 10:00 [pubmed] PHST- 2001/10/12 10:01 [medline] PHST- 2001/07/31 10:00 [entrez] AID - S0198-8859(01)00273-7 [pii] AID - 10.1016/s0198-8859(01)00273-7 [doi] PST - ppublish SO - Hum Immunol. 2001 Aug;62(8):858-68. doi: 10.1016/s0198-8859(01)00273-7.