1090-Temporal Architecture of Seminiferous Epithelial Cycle

This research utilized spatial transcriptomics to map the complex temporal and physical organization of spermatogenesis in mouse testes. By analyzing nearly 900,000 cells at single-molecule resolution, the authors reconstructed the seminiferous epithelial cycle, identifying a circular transcriptional topology that governs tissue timing. A major discovery is that Sertoli cells possess an intrinsic oscillatory program that persists even when germ cells are absent. The study identifies retinoic acid as a vital permissive signal for this cycle, while paracrine cues like Wnt signaling help refine and synchronize the process. Ultimately, the findings provide an integrative model of how intrinsic cellular rhythms and intercellular communication coordinate continuous sperm production.

References:

• Chakravorty A, Yun J, Amrhein H, et al. The temporal architecture of the seminiferous epithelial cycle revealed by spatial transcriptomics[J]. Cell, 2026.