879-How Metastatic Tumors Hijack Hematopoietic Macrophages
This research reveals that metastatic tumor cells in the bone marrow actively hijack specialized macrophages to steal the iron supply typically used for blood production. These specific immune cells, known as erythroblastic island (EBI) macrophages, normally act as "nurse cells" by providing iron to developing red blood cells. By diverting these essential minerals to support their own growth and adaptation to low-oxygen environments, cancer cells effectively starve the blood-building process. This metabolic theft results in impaired erythropoiesis, explaining why patients with bone metastasis…
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