PMID- 33649568 OWN - NLM STAT- MEDLINE DCOM- 20210921 LR - 20221123 IS - 1546-1696 (Electronic) IS - 1087-0156 (Linking) VI - 39 IP - 8 DP - 2021 Aug TI - Affinity-matured HLA class II dimers for robust staining of antigen-specific CD4(+) T cells. PG - 958-967 LID - 10.1038/s41587-021-00836-4 [doi] AB - Peptide-major histocompatibility complex (pMHC) multimers enable the detection of antigen-specific T cells in studies ranging from vaccine efficacy to cancer immunotherapy. However, this technology is unreliable when applied to pMHC class II for the detection of CD4(+) T cells. Here, using a combination of molecular biological and immunological techniques, we cloned sequences encoding human leukocyte antigen (HLA)-DP, HLA-DQ and HLA-DR molecules with enhanced CD4 binding affinity (with a K(d) of 8.9 +/- 1.1 microM between CD4 and affinity-matured HLA-DP4) and produced affinity-matured class II dimers that stain antigen-specific T cells better than conventional multimers in both in vitro and ex vivo analyses. Using a comprehensive library of dimers for HLA-DP4, which is the most frequent HLA allele in many ancestry groups, we mapped 103 HLA-DP4-restricted epitopes derived from diverse tumor-associated antigens and cloned the cognate T-cell antigen receptor (TCR) genes from in vitro-stimulated CD4(+) T cells. The availability of affinity-matured class II dimers across HLA-DP, HLA-DQ and HLA-DR alleles will aid in the investigation of human CD4(+) T-cell responses. CI - (c) 2021. The Author(s), under exclusive licence to Springer Nature America, Inc. FAU - Sugata, Kenji AU - Sugata K AD - Tumor Immunotherapy Program, Campbell Family Institute for Breast Cancer Research, Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada. FAU - Matsunaga, Yukiko AU - Matsunaga Y AD - Tumor Immunotherapy Program, Campbell Family Institute for Breast Cancer Research, Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada. FAU - Yamashita, Yuki AU - Yamashita Y AD - Tumor Immunotherapy Program, Campbell Family Institute for Breast Cancer Research, Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada. FAU - Nakatsugawa, Munehide AU - Nakatsugawa M AD - Tumor Immunotherapy Program, Campbell Family Institute for Breast Cancer Research, Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada. FAU - Guo, Tingxi AU - Guo T AD - Tumor Immunotherapy Program, Campbell Family Institute for Breast Cancer Research, Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada. FAU - Halabelian, Levon AU - Halabelian L AUID- ORCID: 0000-0003-4361-3619 AD - Structural Genomics Consortium, University of Toronto, Toronto, Ontario, Canada. FAU - Ohashi, Yota AU - Ohashi Y AD - Tumor Immunotherapy Program, Campbell Family Institute for Breast Cancer Research, Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada. AD - Department of Immunology, University of Toronto, Toronto, Ontario, Canada. FAU - Saso, Kayoko AU - Saso K AD - Tumor Immunotherapy Program, Campbell Family Institute for Breast Cancer Research, Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada. FAU - Rahman, Muhammed A AU - Rahman MA AD - Tumor Immunotherapy Program, Campbell Family Institute for Breast Cancer Research, Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada. FAU - Anczurowski, Mark AU - Anczurowski M AD - Tumor Immunotherapy Program, Campbell Family Institute for Breast Cancer Research, Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada. AD - Department of Immunology, University of Toronto, Toronto, Ontario, Canada. FAU - Wang, Chung-Hsi AU - Wang CH AD - Tumor Immunotherapy Program, Campbell Family Institute for Breast Cancer Research, Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada. AD - Department of Immunology, University of Toronto, Toronto, Ontario, Canada. FAU - Murata, Kenji AU - Murata K AD - Tumor Immunotherapy Program, Campbell Family Institute for Breast Cancer Research, Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada. FAU - Saijo, Hiroshi AU - Saijo H AD - Tumor Immunotherapy Program, Campbell Family Institute for Breast Cancer Research, Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada. FAU - Kagoya, Yuki AU - Kagoya Y AD - Tumor Immunotherapy Program, Campbell Family Institute for Breast Cancer Research, Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada. FAU - Ly, Dalam AU - Ly D AUID- ORCID: 0000-0002-1177-0225 AD - Tumor Immunotherapy Program, Campbell Family Institute for Breast Cancer Research, Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada. FAU - Burt, Brian D AU - Burt BD AD - Tumor Immunotherapy Program, Campbell Family Institute for Breast Cancer Research, Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada. FAU - Butler, Marcus O AU - Butler MO AUID- ORCID: 0000-0002-9840-7057 AD - Tumor Immunotherapy Program, Campbell Family Institute for Breast Cancer Research, Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada. AD - Department of Immunology, University of Toronto, Toronto, Ontario, Canada. AD - Department of Medicine, University of Toronto, Toronto, Ontario, Canada. FAU - Mak, Tak W AU - Mak TW AD - Tumor Immunotherapy Program, Campbell Family Institute for Breast Cancer Research, Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada. AD - Department of Immunology, University of Toronto, Toronto, Ontario, Canada. FAU - Hirano, Naoto AU - Hirano N AUID- ORCID: 0000-0001-9070-4754 AD - Tumor Immunotherapy Program, Campbell Family Institute for Breast Cancer Research, Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada. naoto.hirano@uhnresearch.ca. AD - Department of Immunology, University of Toronto, Toronto, Ontario, Canada. naoto.hirano@uhnresearch.ca. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20210301 PL - United States TA - Nat Biotechnol JT - Nature biotechnology JID - 9604648 RN - 0 (CD4 Antigens) RN - 0 (HLA Antigens) RN - 0 (Histocompatibility Antigens Class II) SB - IM MH - CD4 Antigens/chemistry/metabolism MH - CD4-Positive T-Lymphocytes/chemistry/cytology/metabolism MH - Cells, Cultured MH - Flow Cytometry MH - *HLA Antigens/chemistry/metabolism MH - *Histocompatibility Antigens Class II/chemistry/metabolism MH - Humans MH - Protein Binding MH - Staining and Labeling/*methods EDAT- 2021/03/03 06:00 MHDA- 2021/09/22 06:00 CRDT- 2021/03/02 06:18 PHST- 2019/07/30 00:00 [received] PHST- 2021/01/15 00:00 [accepted] PHST- 2021/03/03 06:00 [pubmed] PHST- 2021/09/22 06:00 [medline] PHST- 2021/03/02 06:18 [entrez] AID - 10.1038/s41587-021-00836-4 [pii] AID - 10.1038/s41587-021-00836-4 [doi] PST - ppublish SO - Nat Biotechnol. 2021 Aug;39(8):958-967. doi: 10.1038/s41587-021-00836-4. Epub 2021 Mar 1.