Developmental Biology and Gene Regulation

Notch signaling is a molecular communication system that cells use to coordinate decisions about identity and fate during development, determining whether a given cell becomes, for example, a neuron, a blood progenitor, or remains an undifferentiated stem cell. Disruptions to this pathway are implicated in developmental defects and several cancers, making it a target of sustained interest across both basic and clinical research. Work in model organisms like zebrafish has been especially productive for tracing how Notch-regulated gene networks are wired during embryogenesis and how those networks have been reused or modified across vertebrate evolution. Open questions center on how context-specific the pathway's outputs really are — why the same signaling molecule drives such different outcomes in different tissues — and how its role in maintaining stem cell pools tips, under certain conditions, into tumor-promoting activity.

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Keywords

Notch SignalingDevelopmentGene RegulationStem CellsEvolutionary BiologyEmbryonic Development