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Reprogramming Tumor-Associated Macrophages by Antibody Targeting Inhibits Cancer Progression and Metastasis
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2016 (English)In: Cell reports, ISSN 2211-1247, E-ISSN 2211-1247, Vol. 15, no 9, 2000-2011 p.Article in journal (Refereed) PublishedText
Abstract [en]

Tumors are composed of multiple cell types besides the tumor cells themselves, including innate immune cells such as macrophages. Tumor-associated macrophages (TAMs) are a heterogeneous population of myeloid cells present in the tumor microenvironment (TME). Here, they contribute to immunosuppression, enabling the establishment and persistence of solid tumors as well as metastatic dissemination. We have found that the pattern recognition scavenger receptor MARCO defines a subtype of suppressive TAMs and is linked to clinical outcome. An anti-MARCO monoclonal antibody was developed, which induces anti-tumor activity in breast and colon carcinoma, as well as in melanoma models through reprogramming-TAM-populations to a pro-inflammatory phenotype and increasing tumor immunogenicity. This anti-tumor activity is dependent on the inhibitory Fc-receptor, Fc gamma RIIB, and also enhances the efficacy of checkpoint therapy. These results demonstrate that immunotherapies using antibodies designed to modify myeloid cells of the TME represent a promising mode of cancer treatment.

Place, publisher, year, edition, pages
2016. Vol. 15, no 9, 2000-2011 p.
National Category
Cancer and Oncology
URN: urn:nbn:se:umu:diva-123070DOI: 10.1016/j.celrep.2016.04.084ISI: 000376887500014PubMedID: 27210762OAI: diva2:943206
Available from: 2016-06-27 Created: 2016-06-27 Last updated: 2016-06-27Bibliographically approved

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Sund, Malin
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Department of Surgical and Perioperative Sciences
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