Chemical biology tools for studying tissue development

Understanding the spatiotemporal dynamics of molecular and cellular processes is central to unraveling the mechanisms of development, tissue regeneration, and aging. Chemical biology provides a unique and powerful toolkit to meet this challenge, offering methods not only to observe but also to precisely perturb these processes in real time. This review highlights how this toolkit-including genetically encoded fluorescent proteins, bioorthogonal probes, molecular labeling reactions, and synthetic signaling pathways-enable high-resolution mapping and targeted manipulation of cell signaling, cell fates, and tissue microenvironments. We discuss their application across many areas in developmental biology, from decoding morphogen gradients in embryogenesis to targeting the hallmarks of aging. Finally, we envision how integrating these complementary strategies could pave the way for driving future discoveries and inventing therapeutic strategies.