PMID- 34323289 OWN - NLM STAT- MEDLINE DCOM- 20211220 LR - 20231213 IS - 1521-4141 (Electronic) IS - 0014-2980 (Print) IS - 0014-2980 (Linking) VI - 51 IP - 10 DP - 2021 Oct TI - Mutant B2M-HLA-E and B2M-HLA-G fusion proteins protects universal chimeric antigen receptor-modified T cells from allogeneic NK cell-mediated lysis. PG - 2513-2521 LID - 10.1002/eji.202049107 [doi] AB - Recent studies have indicated the antitumor activity and reduced allogeneic response of universal chimeric antigen receptor-modified T (UCAR T) cells lacking endogenous T cell receptors and beta-2 microglobulin (B2M) generated using gene-editing technologies. However, these cells are vulnerable to lysis by allogeneic natural killer (NK) cells due to their lack of human leukocyte antigen (HLA) class I molecule expression. Here, constitutive expression of mutant B2M-HLA-E (mBE) and B2M-HLA-G (mBG) fusion proteins in anti-CD19 UCAR T (UCAR T-19) cells was conducted to protect against allogeneic NK cell-mediated lysis. The ability of cells expressing mBE or mBG to resist NK cell-mediated lysis was observed in gene-edited Jurkat CAR19 cells. UCAR T-19 cells constitutively expressing the mBE and mBG fusion proteins were manufactured and showed effective and specific anti-tumor activity. Constitutive expression of the mBE and mBG fusion proteins in UCAR T-19 cells prevented allogeneic NK cell-mediated lysis. In addition, these cells were not recognizable by allogeneic T cells. Additional experiments, including those in animal models and clinical trials, are required to evaluate the safety and efficacy of UCAR T-19 cells that constitutively express mBE and mBG. CI - (c) 2021 The Authors. European Journal of Immunology published by Wiley-VCH GmbH. FAU - Guo, Yelei AU - Guo Y AD - Department of Bio-therapeutic, the First Medical Centre, Chinese PLA General Hospital, Beijing, China. FAU - Xu, Beilei AU - Xu B AD - State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China. FAU - Wu, Zhiqiang AU - Wu Z AD - Department of Bio-therapeutic, the First Medical Centre, Chinese PLA General Hospital, Beijing, China. FAU - Bo, Jian AU - Bo J AD - Department of Hematology, the First Medical Centre, Chinese PLA General Hospital, Beijing, China. FAU - Tong, Chuan AU - Tong C AD - Department of Bio-therapeutic, the First Medical Centre, Chinese PLA General Hospital, Beijing, China. FAU - Chen, Deyun AU - Chen D AD - Department of Bio-therapeutic, the First Medical Centre, Chinese PLA General Hospital, Beijing, China. FAU - Wang, Jin AU - Wang J AD - Department of Outpatient, the Sixth Medical Centre, Chinese PLA General Hospital, Beijing, China. FAU - Wang, Haoyi AU - Wang H AD - State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China. FAU - Wang, Yao AU - Wang Y AD - Department of Bio-therapeutic, the First Medical Centre, Chinese PLA General Hospital, Beijing, China. FAU - Han, Weidong AU - Han W AD - Department of Bio-therapeutic, the First Medical Centre, Chinese PLA General Hospital, Beijing, China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20210819 PL - Germany TA - Eur J Immunol JT - European journal of immunology JID - 1273201 RN - 0 (Antigens, CD19) RN - 0 (B2M protein, human) RN - 0 (HLA-G Antigens) RN - 0 (Histocompatibility Antigens Class I) RN - 0 (Receptors, Antigen, T-Cell) RN - 0 (Receptors, Chimeric Antigen) RN - 0 (beta 2-Microglobulin) SB - IM MH - Antigens, CD19/immunology MH - Cytotoxicity, Immunologic/*genetics MH - Gene Knockout Techniques MH - HLA-G Antigens/*genetics/immunology MH - Histocompatibility Antigens Class I/*genetics/immunology MH - Humans MH - Immunophenotyping MH - Killer Cells, Natural/immunology/metabolism MH - Lymphocyte Activation/immunology MH - *Mutation MH - Receptors, Antigen, T-Cell/genetics/immunology MH - Receptors, Chimeric Antigen/*genetics/immunology MH - T-Lymphocytes/*immunology/*metabolism MH - beta 2-Microglobulin/*genetics/immunology MH - HLA-E Antigens PMC - PMC9292285 OTO - NOTNLM OT - HLA-E OT - HLA-G OT - NK cells OT - chimeric antigen receptor OT - universal CAR T COIS- The authors declare no commercial or financial conflict of interest. EDAT- 2021/07/30 06:00 MHDA- 2021/12/21 06:00 PMCR- 2022/07/18 CRDT- 2021/07/29 08:47 PHST- 2021/03/20 00:00 [revised] PHST- 2020/12/07 00:00 [received] PHST- 2021/07/30 06:00 [pubmed] PHST- 2021/12/21 06:00 [medline] PHST- 2021/07/29 08:47 [entrez] PHST- 2022/07/18 00:00 [pmc-release] AID - EJI5146 [pii] AID - 10.1002/eji.202049107 [doi] PST - ppublish SO - Eur J Immunol. 2021 Oct;51(10):2513-2521. doi: 10.1002/eji.202049107. Epub 2021 Aug 19.