Cited by 636RNA Interference and Gene DeliveryCAR-T cell therapy researchNanoparticle-Based Drug Delivery

Ionizable Lipid Nanoparticle-Mediated mRNA Delivery for Human CAR T Cell Engineering

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Billingsley, Margaret M., Singh, Nathan, Ravikumar, Pranali, Zhang, Rui, June, Carl H., Mitchell, Michael J.·2020·Nano Letters

Abstract

Chimeric antigen receptor (CAR) T cell therapy relies on the ex vivo manipulation of patient T cells to create potent, cancer-targeting therapies, shown to be capable of inducing remission in patients with acute lymphoblastic leukemia and large B cell lymphoma. However, current CAR T cell engineering methods use viral delivery vectors, which induce permanent CAR expression and could lead to severe adverse effects. Messenger RNA (mRNA) has been explored as a promising strategy for inducing transient CAR expression in T cells to mitigate the adverse effects associated with viral vectors, but it most commonly requires electroporation for T cell mRNA delivery, which can be cytotoxic. Here, ionizable lipid nanoparticles (LNPs) were designed for ex vivo mRNA delivery to human T cells. A library of 24 ionizable lipids was synthesized, formulated into LNPs, and screened for luciferase mRNA delivery to Jurkat cells, revealing seven formulations capable of enhanced mRNA delivery over lipofectamine. The top-performing LNP formulation, C14–4, was selected for CAR mRNA delivery to primary human T cells. This platform induced CAR expression at levels equivalent to electroporation, with substantially reduced cytotoxicity. CAR T cells engineered via C14–4 LNP treatment were then compared to electroporated CAR T cells in a coculture assay with Nalm-6 acute lymphoblastic leukemia cells, and both CAR T cell engineering methods elicited potent cancer-killing activity. These results demonstrate the ability of LNPs to deliver mRNA to primary human T cells to induce functional protein expression, and indicate the potential of LNPs to enhance mRNA-based CAR T cell engineering methods.

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  • Lipid nanoparticle-mRNA formulations have been investigated for ex vivo engineering of CAR T cells and for the production of antibodies, such as anti-CD20, anti-human epidermal growth factor receptor 2 and anti-CD3/claudin 6.

    “Lipid nanoparticle–mRNA formulations have also been investigated for ex vivo engineering of CAR T cells217 and for the production of antibodies, such as anti-CD20 (ref.146), anti-human epidermal growth factor receptor 2 (HER2)95 and anti-CD3/claudin 6 (ref.147).”

    From Lipid nanoparticles for mRNA delivery (2021) · cites this paper as [217]

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Research works printed but not linked: 2

  1. [17]Yang G; Sau C; Lai W; Cichon J; Li W The Principles of Engineering Immune Cells to Treat Cancer Wendell. Cell 2015, 344 (6188), 1173– 1178.
  2. [44]Singh N; Liu X; Hulitt J; Jiang S; June CH; Grupp SA; Barrett DM; Zhao Y Nature of Tumor Control by Permanently and Transiently Modified GD2 Chimeric Antigen Receptor T Cells in Xenograft Models of Neuroblastoma. Cancer Immunol. Res 2014, 2 (11), 1059– 1070. 25104548 PMC5584373

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Authors
Billingsley, M. M., Singh, N., Ravikumar, P., Zhang, R., June, C. H., & Mitchell, M. J.
Affiliations
  • University of Pennsylvania (US)
  • Washington University in St. Louis (US)
  • Abramson Cancer Center (US)
Corresponding author
Mitchell, Michael J.
Venue
Nano Letters
Published
2020-01-17
Volume
20
Issue
3
Pages
1578-1589
ISSN
  • 1530-6984 (ISSN-L)
  • 1530-6992
OpenAlex
W2999972782
Cited by
636
References
93
Citations by year
2026: 108 · 2025: 111 · 2024: 133 · 2023: 94 · 2022: 97 · 2021: 61 · 2020: 29 · 2019: 2
FWCI
22.69
Type
journal article
Language
en
Open access
Locations
  • Nano Letters (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Center for Advancing Translational Sciences (DP2TR002776)
  • American Association for Cancer Research (18-80-44-MITC)
  • National Cancer Institute (P30 CA016520, R01 CA241661)
  • American Cancer Society (129784-IRG-16-188-38-IRG)
  • Burroughs Wellcome Fund
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA Interference and Gene Delivery
  • Health Sciences › Medicine › Oncology › CAR-T cell therapy research
  • Physical Sciences › Materials Science › Biomaterials › Nanoparticle-Based Drug Delivery
Keywords
ionizable lipid nanoparticles, mRNA delivery, chimeric antigen receptor T cells, CAR-T cell engineering, electroporation, Jurkat cells, acute lymphoblastic leukemia, B-cell lymphoma, viral vector alternatives, cytotoxicity
MeSH terms
Receptors, Chimeric Antigen, Humans, Lipids, RNA, Messenger, T-Lymphocytes, Drug Delivery Systems, Coculture Techniques, Cell Line, Tumor, Nanoparticles, Cell Engineering

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