Developmentally regulated expression of integrin alpha-6 distinguishes neural crest derivatives in the skin

This study investigates the role of integrin α6 (ITGA6) as a marker for distinguishing neural crest derivatives in the skin. By employing single-cell data analysis, neural crest lineage tracing, and flow cytometry, researchers identified that ITGA6 expression is developmentally regulated and can categorize neural crest derivatives into three subpopulations: ITGA6^bright (Schwann cells), ITGA6^dim (melanocytes), and ITGA6^neg (fibroblasts). The study also highlights specific genes and transcription factors, such as Hmx1 and Lhx8 in neural crest-derived fibroblasts, and Zic1 in mesoderm-derived fibroblasts, indicating distinct developmental pathways. These findings enhance understanding of neural crest cell development and provide markers for isolating different derivatives in the skin.