Nanoparticle pre-treatment for enhancing the survival and activation of pulmonary macrophage transplant

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Author(s)Jarai, Bader M.
Author(s)Bomb, Kartik
Author(s)Fromen, Catherine A.
Date Accessioned2023-05-05T17:21:55Z
Date Available2023-05-05T17:21:55Z
Publication Date2023-03-14
DescriptionThis article was originally published in Drug Delivery and Translational Research. The version of record is available at: https://doi.org/10.1007/s13346-023-01319-6
AbstractDespite recent clinical successes of chimeric antigen receptor T cell therapies in treating liquid cancers, many lingering challenges stand in the way of therapeutic translation to broader types of malignancies. Macrophages have been proposed as alternatives to T cells given macrophages’ advantages in promoting tumor infiltration, acquiring diverse antigens, and possessing the ability to continuously stimulate adaptive responses. However, the poor survival of macrophages upon transplantation in addition to transient anti-tumor phenotypical states have been major obstacles standing in the way of macrophage-based cell therapies. Given recent discoveries of nanoparticle strategies in improving macrophage survival and promoting phenotype retention, we herein report the ability to extend the survival and phenotype of macrophage transplants in murine lungs via pre-treatment with nanoparticles of varying degradation rates. Macrophages pre-treated with 100 µg/ml dose of poly(ethylene glycol) diacrylate nanoparticle formulations improve pulmonary macrophage transplant survival over untreated cells beyond 7 days, where degradable nanoparticle formulations result in over a 50% increase in retention of transplanted cell counts relative to untreated cells. Furthermore, pre-treated macrophages more efficiently retain an imposed pro-inflammatory-like polarization state following transplantation out to 7 days compared to macrophages pre-treated with a classical pro-inflammatory stimulus, interferon-gamma, where CD86 costimulatory molecule expression is greater than 150% higher in pre-treated macrophage transplants compared to untreated counterparts. These findings provide an avenue for a major improvement in the lifespan and efficacy of macrophage-based cell therapies and have broader implications to other phagocyte-based cellular therapeutics and administration routes. Graphical abstract available at: https://doi.org/10.1007/s13346-023-01319-6
SponsorResearch reported in this work was supported by the National Institutes of Health—National Institute of General Medical Sciences under Award Number R35GM142866, as well as a Research Starter Grant in Pharmaceutics from the PhRMA Foundation (20A00066). Histology services were supported by the DCMR COBRE program, with a grant from NIH-NIGMS COBRE (P20 GM139760).
CitationJarai, B.M., Bomb, K. & Fromen, C.A. Nanoparticle pre-treatment for enhancing the survival and activation of pulmonary macrophage transplant. Drug Deliv. and Transl. Res. (2023). https://doi.org/10.1007/s13346-023-01319-6
ISSN2190-3948
URLhttps://udspace.udel.edu/handle/19716/32726
Languageen_US
PublisherDrug Delivery and Translational Research
Keywordsmacrophages
Keywordssurvival
Keywordscell therapy
Keywordsnanoparticles
Keywordspolarization
Keywordspulmonary transplant
TitleNanoparticle pre-treatment for enhancing the survival and activation of pulmonary macrophage transplant
TypeArticle
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