Xue, B.* ; von Heyking, K.* ; Gassmann, H.* ; Poorebrahim, M.* ; Thiede, M.* ; Schober, K.* ; Mautner, J. ; Hauer, J.* ; Ruland, J.* ; Busch, D.H.* ; Thiel, U.* ; Burdach, S.E.G.*
T cells directed against the metastatic driver chondromodulin-1 in ewing sarcoma: Comparative engineering with CRISPR/Cas9 vs. retroviral gene transfer for adoptive transfer.
Cancers 14:5485 (2022)
Ewing sarcoma (EwS) is a highly malignant sarcoma of bone and soft tissue with early metastatic spread and an age peak in early puberty. The prognosis in advanced stages is still dismal, and the long-term effects of established therapies are severe. Efficacious targeted therapies are urgently needed. Our previous work has provided preliminary safety and efficacy data utilizing T cell receptor (TCR) transgenic T cells, generated by retroviral gene transfer, targeting HLA-restricted peptides on the tumor cell derived from metastatic drivers. Here, we compared T cells engineered with either CRISPR/Cas9 or retroviral gene transfer. Firstly, we confirmed the feasibility of the orthotopic replacement of the endogenous TCR by CRISPR/Cas9 with a TCR targeting our canonical metastatic driver chondromodulin-1 (CHM1). CRISPR/Cas9-engineered T cell products specifically recognized and killed HLA-A*02:01+ EwS cell lines. The efficiency of retroviral transduction was higher compared to CRISPR/Cas9 gene editing. Both engineered T cell products specifically recognized tumor cells and elicited cytotoxicity, with CRISPR/Cas9 engineered T cells providing prolonged cytotoxic activity. In conclusion, T cells engineered with CRISPR/Cas9 could be feasible for immunotherapy of EwS and may have the advantage of more prolonged cytotoxic activity, as compared to T cells engineered with retroviral gene transfer.
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Publication type
Article: Journal article
Document type
Scientific Article
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Keywords
Chondromodulin-1 ; Crispr/cas9 ; Ewing Sarcoma ; Immunotherapy ; Orthotopic Tcr Replacement ; Retroviral Transduction
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Language
english
Publication Year
2022
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2022
ISSN (print) / ISBN
2072-6694
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Volume: 14,
Issue: 22,
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Article Number: 5485
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MDPI
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Peer reviewed
POF-Topic(s)
30203 - Molecular Targets and Therapies
Research field(s)
Immune Response and Infection
PSP Element(s)
G-501500-001
Grants
China Scholarship Council
Deutsche Forschungsgemeinschaft
Wilhelm Sander-Stiftung
St. Baldrick's Foundation
Robert Pfleger Foundation
Hanne Sturm Memorial Foundation
Cura Placida Children’s Cancer Research Foundation
AdoRe
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Erfassungsdatum
2022-12-08