Charitidis, Filippos T. (2023)
Deploying single-cell transcriptomics for assessing CAR T cell generation: alleviating antiviral restriction factors enhances gene transfer.
Technische Universität Darmstadt
doi: 10.26083/tuprints-00023984
Ph.D. Thesis, Primary publication, Publisher's Version
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Item Type: | Ph.D. Thesis | ||||
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Type of entry: | Primary publication | ||||
Title: | Deploying single-cell transcriptomics for assessing CAR T cell generation: alleviating antiviral restriction factors enhances gene transfer | ||||
Language: | English | ||||
Referees: | Nuber, Prof. Dr. Ulrike A. ; Buchholz, Prof. Dr. Christian J. | ||||
Date: | 13 November 2023 | ||||
Place of Publication: | Darmstadt | ||||
Collation: | XI, 140 Seiten | ||||
Date of oral examination: | 26 April 2023 | ||||
DOI: | 10.26083/tuprints-00023984 | ||||
Abstract: | Lentiviral vectors (LV) have become the dominant tool for stable gene transfer into lymphocytes including chimeric antigen receptor (CAR) gene delivery to T cells, a major breakthrough in cancer therapy. Yet, room for improvement remains, especially for the latest LV generations delivering genes selectively into T cell subtypes, a key requirement for in vivo CAR T cell generation. Towards improving gene transfer rates with these vectors, transcriptome analyses on human T lymphocytes after exposure to CAR-encoding conventional vector VSV-LV, and vectors targeted to CD8+ (CD8-LV) or CD4+ T cells (CD4-LV) was conducted. Genes related to quiescence and antiviral restriction were found to be upregulated in CAR-negative cells exposed to all types of LVs. Down-modulation of various antiviral restriction factors including the interferon-induced transmembrane proteins (IFITMs) was achieved with rapamycin as verified by mass spectrometry (LC-MS). Strikingly, rapamycin enhanced transduction by up to 7-fold for CD8-LV and CD4-LV without compromising CAR T cell activities, but did not improve VSV-LV. When administered to humanized mice, CD8-LV resulted in higher rates of GFP gene delivery as well as faster in vivo CAR T cell generation and tumor control. The data favor multi-omics approaches for improvements in gene delivery. |
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Status: | Publisher's Version | ||||
URN: | urn:nbn:de:tuda-tuprints-239840 | ||||
Classification DDC: | 500 Science and mathematics > 570 Life sciences, biology | ||||
Divisions: | 10 Department of Biology > Stem Cell and Developmental Biology | ||||
Date Deposited: | 13 Nov 2023 13:06 | ||||
Last Modified: | 24 Nov 2023 12:32 | ||||
URI: | https://tuprints.ulb.tu-darmstadt.de/id/eprint/23984 | ||||
PPN: | 51315776X | ||||
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