Stem cell niche

Stem cell niche refers to the specialized local microenvironment in tissues where stem cells reside[3]. It integrates anatomical structures (e.g., neighboring stromal, vascular, and neural cells), extracellular matrix, adhesion molecules, and soluble factors to maintain stem cell properties and regulate their proliferation, differentiation, or quiescence[1][2][4]. Niche composition and signaling are essential for tissue homeostasis and regeneration, balancing stem cell production against the risk of exhaustion or malignant transformation. Key components of the niche provide paracrine and juxtacrine signals (such as growth factors, cytokines, and matrix interactions) and cooperate to dynamically adapt stem cell activity to physiological and pathological needs[1][2][3][4][7][8]. The term "stem cell niche" is used broadly and is not a specific target entity, so it should not be classified as a molecular or receptor drug target. Instead, therapeutic strategies may aim to modulate the niche or its individual signaling components to influence stem cell behavior in diseases or regenerative contexts[1][2][4][7].

Other names

Stem-cell nichestem cell microenvironment[3][5]