Genetic Tools for Cell Lineage Tracing and Profiling Developmental Trajectories in the Skin

The document reviews recent advancements in genetic tools for cell lineage tracing and profiling developmental trajectories in the skin, with a focus on CRISPR-based methods. These tools, including CRISPR/Cas9 and prime editing technologies, have improved the ability to track stem and progenitor cell proliferation and differentiation, offering insights into skin morphogenesis, disease pathology, and responses to stressors. CRISPR/Cas9-based methods like GESTALT allow for mapping cell lineages but can cause DNA breaks, while prime editing methods like DNA Typewriter offer controlled editing without breaks. These advancements hold promise for understanding skin development, cancer metastasis, and tissue regeneration, potentially enhancing treatments for skin-related conditions such as hair follicle regeneration and scarless wound healing. The document emphasizes the potential of these technologies to revolutionize regenerative medicine in dermatology.