Cellular self-renewal

Cellular self-renewal is the fundamental biological process by which a stem cell undergoes division to produce at least one daughter cell that retains the same undifferentiated state and developmental potential as the parent cell (He et al., 2009, Nature). This process is essential for maintaining the stem cell pool throughout the lifespan of an organism, ensuring continuous tissue repair and homeostasis (NIH Stem Cell Information). Self-renewal is tightly regulated by an intricate network of signaling pathways, including Wnt/beta-catenin, Notch, and Hedgehog, as well as core transcription factors like OCT4, SOX2, and NANOG. In a clinical context, 'cellular self-renewal' is not a single molecular target but a complex phenotype. Dysregulation of these pathways is a hallmark of cancer, where 'cancer stem cells' (CSCs) hijack self-renewal mechanisms to drive tumor initiation, progression, and resistance to chemotherapy (Reya et al., 2001, Nature). While drugs like Glasdegib target specific components of these pathways (e.g., Smoothened) to inhibit CSC maintenance, the process itself involves a broad array of molecular players and is not classified as a discrete therapeutic target.

Other names

Stem cell self-renewalStemness maintenanceSymmetric stem cell divisionSelf-replacement

Not applicable as a single mechanism; therapeutic intervention typically involves the inhibition of signaling pathways (e.g., Hedgehog, Wnt, Notch) or transcription factors that maintain the self-renewing state of stem cells.