Technical Articles

This article focuses on the molecular characteristics and biological functions of macrophage colony-stimulating factor (M-CSF), systematically elaborating its core regulatory role in the differentiation of monocyte-macrophage lineage and the maintenance of tissue-resident macrophages through the M-CSF receptor signaling pathway. It further analyzes its critical position in the polarization and functional regulation of tumor-associated macrophages and explores the impact of M-CSF signaling blockade on tumor angiogenesis, metastasis, and treatment resistance.

This article systematically elucidates the physiological functions of osteoclasts in bone remodeling through the secretion of acids and hydrolytic enzymes for bone resorption, focusing on their molecular characteristics and functional regulatory mechanisms. It provides an in-depth analysis of the pivotal regulatory roles of the RANKL/RANK signaling axis and various cytokines (such as M-CSF and IL-6) in osteoclast differentiation, and explores their pathological significance in bone-destructive diseases like osteoporosis.

Osteoclasts are the only specialized cells in the human body responsible for bone resorption, and their differentiation, activation, and survival are strictly regulated by a sophisticated cytokine network.

M-CSF, or macrophage colony-stimulating factor, is a key regulator in the hematopoietic system that determines the fate of mononuclear macrophages. It is far more than just a "growth factor" for macrophages; it is the "supreme commander" of their survival, differentiation, and function.