Cell differentiation

Cell differentiation is the process by which a less specialized cell, such as a stem cell, develops into a specific, specialized cell type with a unique structure and function[1][3][5][7]. This process is essential in embryonic development, adult tissue maintenance, tissue repair, and regeneration. It is driven by regulated changes in gene expression, often controlled by external signals (e.g., growth factors, hormones) and internal cues (e.g., epigenetic modifications, transcription factors)[2][5][9]. Differentiation involves activation or repression of transcription factors, modulation by signaling cascades (such as Notch, Wnt, MAPK/ERK, BMP/TGF-β, PI3K/AKT/mTOR, and JAK/STAT)[2][4][6][8], leading to changes in cell physiology, morphology, and function[7]. Defects or disruptions in cell differentiation can result in diseases such as cancer, neurodevelopmental disorders, and impaired regeneration[5]. Since it is a process and not a defined molecule, it is not a valid drug target per se, though various drugs may influence differentiation through their effects on specific signaling pathways or epigenetic regulators involved in the process.

Other names

cellular differentiation