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.

The vascular system, as a life-sustaining network that spans the entire body to deliver nutrients and signals, is particularly important for the construction of in vitro models.

Th1 cell polarization is a core process in adaptive immune responses, precisely driven by key cytokines such as IL-12 and IFN-γ. This process shapes type 1 immunity characterized by macrophage activation and cytotoxic T cell responses, serving as a cornerstone for eliminating intracellular pathogens.

B-cell polarizing cytokines are a group of key signaling molecules that direct B-cell differentiation, antibody class switching, and functional specialization.

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.

Macrophage polarization is a core regulatory event in immune responses, with cytokines serving as the "chemical instructions" guiding this process.

At the forefront of immunology research, macrophage plasticity and functional polarization have become central to understanding inflammation, tissue repair, and the tumor immune microenvironment. The precise in vitro differentiation of human monocytes into M1 (pro-inflammatory) or M2 (anti-inflammatory/repair) macrophages is a critical technology for simulating in vivo immune status, conducting drug screening, and facilitating cell therapy research.

Mouse colon organoids serve as a revolutionary in vitro model, whose successful establishment and long-term maintenance are entirely dependent on precise signaling regulation provided by specific cytokine combinations. These factors collectively mimic the molecular characteristics of the in vivo colonic stem cell niche, enabling the organoids to recapitulate both the structure and function of the colonic epithelium.

Mouse cholangiocyte organoids are miniature, self-organizing structures derived from cholangiocytes or stem cells within a three-dimensional (3D) in vitro culture system. This model effectively simulates the epithelial barrier function, secretory properties, and injury response of the bile duct. Its successful establishment and long-term maintenance are highly dependent on a precise combination of cytokines.