Cited by 107CAR-T cell therapy researchImmunotherapy and Immune ResponsesT-cell and B-cell Immunology

Effect of cryopreservation on autologous chimeric antigen receptor T cell characteristics

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Panch, Sandhya R., Srivastava, Sandeep K., Elavia, Nasha, McManus, Andrew, Liu, Shutong, Jin, Ping, Highfill, Steven L., Li, Xiaobai +7 more·2019·Molecular Therapy

Abstract

As clinical applications for chimeric antigen receptor T cell (CART) therapy extend beyond early phase trials, commercial manufacture incorporating cryopreservation steps becomes a logistical necessity. The effect of cryopreservation on CART characteristics is unclear. We retrospectively evaluated the effect of cryopreservation on product release criteria and in vivo characteristics in 158 autologous CART products from 6 single-center clinical trials. Further, from 3 healthy donor manufacturing runs, we prospectively identified differentially expressed cell surface markers and gene signatures among fresh versus cryopreserved CARTs. Within 2 days of culture initiation, cell viability of the starting fraction (peripheral blood mononuclear cells [PBMNCs]) decreased significantly in the cryo-thawed arm compared to the fresh arm. Despite this, PBMNC cryopreservation did not affect final CART fold expansion, transduction efficiency, CD3%, or CD4:CD8 ratios. In vivo CART persistence and clinical responses did not differ among fresh and cryopreserved final products. In healthy donors, compared to fresh CARTs, early apoptotic cell-surface markers were significantly elevated in cryo-thawed CARTs. Cryo-thawed CARTs also demonstrated significantly elevated expression of mitochondrial dysfunction, apoptosis signaling, and cell cycle damage pathways. Cryopreservation during CART manufacture is a viable strategy, based on standard product release parameters. The clinical impact of cryopreservation-related subtle micro-cellular damage needs further study.

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  • Fresh CAR-T cells were shown earlier to have higher in vitro antitumor activity and lesser microcellular damage than frozen CAR-T cells.

    “POC manufacturing enables the delivery of fresh CAR-T cells, which were shown earlier to have higher in vitro antitumor activity and lesser microcellular damage than the frozen,4,5”

    From Point-of-care manufacturing of anti-CD19 CAR-T cells using a closed production platform: Experiences of an academic in Thailand (2024) · cites this paper as [5]

    The Results (page unavailable) report more apoptosis- and cell-cycle-damage-related gene expression in cryo-thawed cells, supporting the comparison of cellular damage. They also report greater expression of pathways associated with T-cell cytolysis in fresh cells, but do not establish higher in vitro antitumor activity; pathway expression is not a direct activity measurement. (LLM, conf=0.87)

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  • Recovery and viability of PBMCs are significantly reduced after freezing and thawing compared to fresh apheresis products, but recovery of mononuclear cells after thawing is sufficient for consistent manufacturing of CAR T cells without evidence of significant differences in expansion, transduction efficiency or overall subset composition.

    “For instance, Panch et al. showed recovery and viability of PBMCs was significantly reduced after freezing and thawing compared to fresh apheresis products (39). Nevertheless, the recovery of mononuclear cells after thawing was sufficient for consistent manufacturing of CAR T cells, without evidence of significant differences in expansion, transduction efficiency or overall subset composition (39)”

    From Scalable Manufacturing of CAR T Cells for Cancer Immunotherapy (2021) · cites this paper as [39]

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Research works printed but not linked: 1

  1. [26]26. June, C.H. ∙ Sadelain, M. Chimeric Antigen Receptor Therapy N. Engl. J. Med. 2018; 379:64-73 Crossref Scopus (1450) PubMed Google Scholar

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Authors
Panch, S. R., Srivastava, S. K., Elavia, N., McManus, A., Liu, S., Jin, P., Highfill, S. L., Li, X., Dagur, P., Kochenderfer, J. N., Fry, T. J., Mackall, C. L., Lee, D., Shah, N. N., & Stroncek, D. F.
Affiliations
  • National Institutes of Health (US)
  • National Heart, Lung, and Blood Institute (US)
  • Stanford University (US)
  • University of Virginia (US)
Corresponding author
Panch, Sandhya R.
Venue
Molecular Therapy
Publisher
Elsevier BV
Published
2019-07
Volume
27
Issue
7
Pages
1275-1285
ISSN
1525-0016 (ISSN-L)
OpenAlex
W2947301297
Cited by
107
References
42
Citations by year
2026: 17 · 2025: 12 · 2024: 16 · 2023: 18 · 2022: 22 · 2021: 12 · 2020: 7 · 2019: 3
FWCI
4.60
Type
journal article
Language
en
Open access
Locations
  • Molecular Therapy (publishedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health
  • Center for Outcomes Research and Evaluation, Yale School of Medicine
  • NIH Clinical Center
  • National Heart, Lung, and Blood Institute
Topics
  • Health Sciences › Medicine › Oncology › CAR-T cell therapy research
  • Life Sciences › Immunology and Microbiology › Immunology › Immunotherapy and Immune Responses
  • Life Sciences › Immunology and Microbiology › Immunology › T-cell and B-cell Immunology
Keywords
chimeric antigen receptor T cells, cryopreservation, autologous CAR T-cell therapy, CAR T cell manufacturing, cell viability, apoptosis, mitochondrial dysfunction, cell surface markers, gene expression signatures, CAR T cell persistence
MeSH terms
Receptors, Chimeric Antigen, Adolescent, Adult, Aged, Autoantigens, Cell Cycle, Cell Survival, Child, Female, Humans, Male, Middle Aged, Neoplasms, Phenotype, Prospective Studies, Retrospective Studies, T-Lymphocytes, Cryopreservation, Immunotherapy, Adoptive, CD4-CD8 Ratio, Apoptosis, Young Adult, Transcriptome

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