The Human Retina Cell Atlas (HRCA) serves as a comprehensive multi-omic reference, integrating single-cell and single-nuclei RNA-sequencing with chromatin accessibility data to map the eye’s regulatory landscape. Researchers utilized this data to identify unique transcription factor combinations that define specific cell types, such as the newly distinguished BB and GB bipolar cells. The study also highlights significant evolutionary differences between mouse and primate retinal structures, noting that while many cell types correlate across species, some remain unique to humans. Beyond basic biology, the atlas tracks how gene expression changes with age, retinal location, and genetic ancestry, providing insights into varying immune responses. Finally, the HRCA offers a powerful tool for disease research, allowing scientists to fine-map genetic variants associated with conditions like glaucoma and inherited retinal degenerations. By linking specific cis-regulatory elements to target genes, the project establishes a foundation for understanding the mechanisms behind vision loss and potential therapeutic targets.

References:

• Li J, Wang J, Ibarra I L, et al. Single-cell atlas of the transcriptome and chromatin accessibility in the human retina[J]. Nature Genetics, 2026: 1-16.