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The Role of CAR T Cells in Human Health and Disease

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Molecular Biology".

Deadline for manuscript submissions: 31 July 2024 | Viewed by 854

Special Issue Editor


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Guest Editor
1. Department of Internal Medicine V, University Hospital Heidelberg, 69120 Heidelberg, Germany
2. German Cancer Research Center (DKFZ), National Center for Tumor Diseases (NCT), German Cancer Consortium (DKTK), 69120 Heidelberg, Germany
Interests: tumor antigens; peptide vacation; cell therapy; CAR T cells; TCR T cells; tolerance induction
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Special Issue Information

Dear Colleagues,

In the last 5 years, chimeric antigen receptor (CAR) T cells became a standard clinical treatment option for patients with CD19+ leukemia and lymphoma, as well as for BCMA+ multiple myeloma. They are currently used in 2500 patients per year in Europe and 25,000 patients in the USA. Response rates are high (80–100%) but after 3 years, only 10–20% of adult leukemia and 40% of adult lymphoma patients are still free from relapse. Side effects like immune-cell-associated neuropathy syndrome (ICANS), cytokine release syndrome (CRS) and hematotoxicity vary from product to product.

Therefore, there is a lot of room for improvement. In current research, there exist promising approaches with novel target cancer antigens, multi-antigen targeting, enhancement of CAR T cells by novel vector constructs like TRUCKs, cytokines like IL-15, inhibition of nocious interaction of other immune cells like NK cells and MDSC cells with CAR T cells. Combination approaches of CAR T cells with peptide, protein or mRNA vaccines in the mouse model as well as in clinical studies will be of highest interest. Non-viral approaches like transposons, minicircles, nanoplasmids, etc., will be highly appreciated.

Last, but not least, gene editing of genes improving CAR T cell function and interaction with other players of the immune system will open new avenues towards our goal to make CAR T cell therapy even more safe and effective.

The present Special Issue aims to provide a broad overview on all the above-mentioned fields of research and development in current CAR T cell therapy. I am looking forward to your upcoming submissions.

Prof. Dr. Michael Schmitt
Guest Editor

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Keywords

  • CAR T cells
  • vector design
  • combined vaccination and CAR T cell therapy
  • non-viral transductioin
  • genetic engineering

Published Papers (1 paper)

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Research

15 pages, 3390 KiB  
Article
In Vitro Functionality and Endurance of GMP-Compliant Point-of-Care BCMA.CAR-T Cells at Different Timepoints of Cryopreservation
by Genqiao Jiang, Brigitte Neuber, Angela Hückelhoven-Krauss, Uta E. Höpken, Yuntian Ding, David Sedloev, Lei Wang, Avinoam Reichman, Franziska Eberhardt, Martin Wermke, Armin Rehm, Carsten Müller-Tidow, Anita Schmitt and Michael Schmitt
Int. J. Mol. Sci. 2024, 25(3), 1394; https://doi.org/10.3390/ijms25031394 - 23 Jan 2024
Viewed by 730
Abstract
The search for target antigens for CAR-T cell therapy against multiple myeloma defined the B-cell maturation antigen (BCMA) as an interesting candidate. Several studies with BCMA-directed CAR-T cell therapy showed promising results. Second-generation point-of-care BCMA.CAR-T cells were manufactured to be of a GMP [...] Read more.
The search for target antigens for CAR-T cell therapy against multiple myeloma defined the B-cell maturation antigen (BCMA) as an interesting candidate. Several studies with BCMA-directed CAR-T cell therapy showed promising results. Second-generation point-of-care BCMA.CAR-T cells were manufactured to be of a GMP (good manufacturing practice) standard using the CliniMACS Prodigy® device. Cytokine release in BCMA.CAR-T cells after stimulation with BCMA positive versus negative myeloma cell lines, U266/HL60, was assessed via intracellular staining and flow cytometry. The short-term cytotoxic potency of CAR-T cells was evaluated by chromium-51 release, while the long-term potency used co-culture (3 days/round) at effector/target cell ratios of 1:1 and 1:4. To evaluate the activation and exhaustion of CAR-T cells, exhaustion markers were assessed via flow cytometry. Stability was tested through a comparison of these evaluations at different timepoints: d0 as well as d + 14, d + 90 and d + 365 of cryopreservation. As results, (1) Killing efficiency of U266 cells correlated with the dose of CAR-T cells in a classical 4 h chromium-release assay. There was no significant difference after cryopreservation on different timepoints. (2) In terms of endurance of BCMA.CAR-T cell function, BCMA.CAR-T cells kept their ability to kill all tumor cells over six rounds of co-culture. (3) BCMA.CAR-T cells released high amounts of cytokines upon stimulation with tumor cells. There was no significant difference in cytokine release after cryopreservation. According to the results, BCMA.CAR-T cells manufactured under GMP conditions exerted robust and specific killing of target tumor cells with a high release of cytokines. Even after 1 year of cryopreservation, cytotoxic functions were maintained at the same level. This gives clinicians sufficient time to adjust the timepoint of BCMA.CAR-T cell application to the patient’s course of the underlying disease. Full article
(This article belongs to the Special Issue The Role of CAR T Cells in Human Health and Disease)
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