Protocol for isolation and flow cytometric analysis of interstitial macrophages in murine lung metastasis models.

STAR Protoc

Macrophage Lab, Department of Microbiology and Immunology, and Institute of Endemic Disease, Seoul National University College of Medicine, Seoul 03080, Republic of Korea; Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul 03080, Republic of Korea; Cancer Researc

Published: September 2025


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Article Abstract

Interstitial macrophages increase significantly during lung metastasis and may contribute to tumor dissemination. However, isolating them is challenging due to their localization within lung tissue and phenotypic overlap with other immune cells. Here, we present a protocol for isolating and characterizing murine interstitial macrophages. We include steps for establishing lung metastasis models, lung tissue dissociation, fluorescent antibody staining, and flow cytometry analysis. It is applicable to both metastasized and naive lung tissues. For complete details on the use and execution of this protocol, please refer to Jeong et al..

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http://dx.doi.org/10.1016/j.xpro.2025.104060DOI Listing

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