This research introduces the Human Neural Organoid Cell Atlas (HNOCA), a massive transcriptomic resource integrating over 1.7 million single cells from dozens of different scientific protocols. By consolidating data from numerous studies, researchers have created a comprehensive map that allows for a quantitative comparison between lab-grown organoids and actual developing human brain tissue. The atlas reveals that while organoids successfully replicate many early neural cell types and developmental trajectories, they often exhibit universal metabolic differences, such as increased cellular stress, regardless of the specific growth method used. This tool enables scientists to identify which brain regions are well-represented in vitro and which remain under-represented, such as the thalamus and cerebellum. Furthermore, the HNOCA serves as a standardized framework for evaluating new protocols and studying the underlying mechanisms of various neurological diseases. Ultimately, this integrated atlas provides a vital benchmark for improving the fidelity and accuracy of human brain models in regenerative medicine and drug discovery.

References:

• He Z, Dony L, Fleck J S, et al. An integrated transcriptomic cell atlas of human neural organoids[J]. Nature, 2024, 635(8039): 690-698.