Researchers have developed a comprehensive single-cell spatial atlas of the human skin, mapping approximately 1.2 million cells across 15 different body sites. By utilizing MERFISH technology, the study identifies and localizes 45 distinct cell subpopulations, providing a high-resolution view of how the body's largest organ is organized at a molecular level. The data reveals that skin composition is not uniform; instead, it follows stereotypic patterns of cellular diversity and density that vary between locations like the scalp, face, and extremities. A significant discovery includes the identification of multicellular neighborhoods, specifically a perivascular niche that facilitates essential communication between immune cells and fibroblasts. This spatial framework helps explain how the skin maintains health and how its architectural organization becomes disrupted during disease. Ultimately, the study provides an interactive webtool to support further global research into skin biology and dermatological treatments.

References:

• Restrepo P, Wilder A, Houser A, et al. Single-cell spatial transcriptomic analysis of human skin anatomy[J]. Nature Genetics, 2026: 1-13.