Cited by 98Immune cells in cancerCancer Immunotherapy and BiomarkersCAR-T cell therapy research

Targeting Macrophages with CAR T Cells Delays Solid Tumor Progression and Enhances Antitumor Immunity

Open access
Sánchez-Paulete, Alfonso R., Mateus-Tique, Jaime, Mollaoglu, Gurkan, Nielsen, Sebastian R., Marks, Adam, Lakshmi, Ashwitha, Khan, Jalal A., Wilk, C. Matthias +4 more·2022·Cancer Immunology Research

Published version of a preprint

Abstract

Tumor-associated macrophages (TAM) are one of the most abundant cell types in many solid tumors and typically exert protumor effects. This has led to an interest in macrophage-depleting agents for cancer therapy, but approaches developed to date have had limited success in clinical trials. Here, we report the development of a strategy for TAM depletion in mouse solid tumor models using chimeric antigen receptor (CAR) T cells targeting the macrophage marker F4/80 (F4.CAR-T). F4.CAR-T cells effectively killed macrophages in vitro and in vivo without toxicity. When injected into mice bearing orthotopic lung tumors, F4.CAR-T cells infiltrated tumor lesions and delayed tumor growth comparably with PD-1 blockade, and significantly extended mouse survival. Antitumor effects were mediated by F4.CAR-T–produced IFNγ, which promoted upregulation of MHC molecules on cancer cells and tumor-infiltrating myeloid cells. Notably, F4.CAR-T promoted expansion of endogenous CD8 T cells specific for tumor-associated antigen and led to immune editing of highly antigenic tumor cell clones. Antitumor impact was also observed in mouse models of ovarian and pancreatic cancer. These studies provide proof of principle to support CAR T-cell targeting of TAMs as a means to enhance antitumor immunity.

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Crossref · 10.1158/2326-6066.cir-21-1075

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  • Macrophages have a major advantage over other immune cells for adoptive cell therapy: propensity to migrate and infiltrate into tumors.

    “Compared with other immune cells, one major advantage of using macrophages for ACT is the propensity in migration and infiltration into tumors [133].”

    From Advances on immunotherapy for osteosarcoma (2024) · cites this paper as [133]

    The Introduction says tumor-associated macrophages are abundant in solid tumors, and the Results report recruitment of monocyte-derived macrophages to tumor-bearing lungs. These passages support macrophage accumulation in tumors, but do not establish that adoptively transferred macrophages migrate or infiltrate better than other immune cells. (LLM, conf=0.82)

    Experimental — accuracy not yet measured

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Authors
Sánchez-Paulete, A. R., Mateus-Tique, J., Mollaoglu, G., Nielsen, S. R., Marks, A., Lakshmi, A., Khan, J. A., Wilk, C. M., Pia, L., Baccarini, A., Merad, M., & Brown, B. D.
Affiliations
  • Icahn School of Medicine at Mount Sinai (US)
  • 1Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, New York.
  • Tisch Cancer Institute (US)
Corresponding author
Brown, Brian D.
Venue
Cancer Immunology Research
Published
2022-09-12
Volume
10
Issue
11
Pages
1354-1369
ISSN
  • 2326-6066 (ISSN-L)
  • 2326-6074
OpenAlex
W4295309587
Cited by
98
References
66
Citations by year
2026: 21 · 2025: 29 · 2024: 28 · 2023: 18 · 2022: 2
FWCI
7.35
Type
journal article
Language
en
Open access
Locations
  • Cancer Immunology Research (publishedVersion)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health (R01CA257195, R01CA254104)
  • Alliance for Cancer Gene Therapy
  • Applebaum Foundation
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › Immune cells in cancer
  • Health Sciences › Medicine › Oncology › Cancer Immunotherapy and Biomarkers
  • Health Sciences › Medicine › Oncology › CAR-T cell therapy research
Keywords
tumor-associated macrophages, chimeric antigen receptor T cells, F4/80, macrophage depletion, antitumor immunity, interferon-gamma, CD8+ T cell proliferation, immunoediting, lung cancer, ovarian cancer, pancreatic cancer, solid tumors
MeSH terms
Receptors, Chimeric Antigen, Animals, Antigens, Neoplasm, Disease Models, Animal, Macrophages, T-Lymphocytes, Immunotherapy, Adoptive, Disease Progression, Xenograft Model Antitumor Assays, Cell Line, Tumor, Mice

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