The article discusses the ongoing evolution and critical importance of the Human Cell Atlas (HCA) initiative. The authors explain that the HCA is moving beyond simply collecting data to becoming an integrated resource, leveraging advances in artificial intelligence (AI) and machine learning (ML) to map the estimated 37.2 trillion cells in the human body. This comprehensive resource is envisioned in five key ways: as a cell census, a 3D multimodal and multiscale map, a genotype-to-phenotype map, a temporal map of development (4D), and ultimately, a foundation model for biology. These advanced cellular maps are considered essential for transforming medicine by providing crucial insights into health, disease mechanisms, diagnosis, and the development of more effective therapies.

References:

• Rood J E, Wynne S, Robson L, et al. The Human Cell Atlas from a cell census to a unified foundation model[J]. Nature, 2025, 637(8048): 1065-1071.