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. 1986 Jun;22(2):125–131. doi: 10.1007/BF00199126

A microassay for the rapid and selective binding of cells from solid tumors to mouse macrophages

Ikuo Saiki 1, Rajiv Nayar 1,✉, Corazon Bucana 1, Isaiah J Fidler 1
PMCID: PMC11038668  PMID: 3719592

Abstract

A microassay was developed to study the rapid binding characteristics of murine macrophages activated by gamma interferon and muramyl dipeptide to adherent neoplastic or nonneoplastic target cells. The binding of tumor cells to both activated and nonactivated macrophages was time- and temperature-dependent, and independent of tumor cell type. Activated macrophages bound more tumor cells than nonactivated macrophages. The initial binding of macrophages to target cells did not necessarily lead to lysis. First, primed macrophages bound tumor cells but did not lyse them, and second, nonactivated macrophages bound nontumorigenic cells without subsequent lysis. The rapid binding assay described here could prove useful in investigating the recognition mechanism(s) between macrophages and tumor cells derived from solid primary and metastatic cancers.

Keywords: Tumor Cell, Interferon, Target Cell, Binding Assay, Dipeptide

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