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Genetic tuning of retinal ganglion cell subtype identity to drive visual behavior

Author

Listed:
  • Marcos L. Aranda

    (Northwestern University)

  • Jacob D. Bhoi

    (Northwestern University)

  • Omar A. Payán Parra

    (Northwestern University)

  • Seul Ki Lee

    (Northwestern University)

  • Tomoko Yamada

    (Northwestern University)

  • Yue Yang

    (Northwestern University)

  • Tiffany M. Schmidt

    (Northwestern University
    Northwestern University)

Abstract

The distinct blend of molecular and cellular features that define neuronal subtype identity are central to shaping how individual subtypes impact animal behavior. The diversity of the mammalian nervous system is vast — the retina alone contains over 100 neuronal subtypes. Yet, the genetic processes giving rise to this stunning structural and functional diversity remain poorly understood. Here, we uncover a graded expression pattern of the transcription factor BRN3B that tunes and maintains multiple, subtype-defining transcriptional and morphophysiological features of the melanopsin-expressing, intrinsically photosensitive retinal ganglion cells (ipRGCs) in mice. Disruption of BRN3B expression levels causes the transcriptional and morphophysiological identity of ipRGC subtypes to begin to converge, leading to dysfunction in multiple ipRGC-dependent behaviors. These findings show that graded levels of a single transcription factor can tune a diverse array of features to shape neuronal identity and circuit function to drive behavior.

Suggested Citation

  • Marcos L. Aranda & Jacob D. Bhoi & Omar A. Payán Parra & Seul Ki Lee & Tomoko Yamada & Yue Yang & Tiffany M. Schmidt, 2025. "Genetic tuning of retinal ganglion cell subtype identity to drive visual behavior," Nature Communications, Nature, vol. 16(1), pages 1-13, December.
    • Handle: RePEc:nat:natcom:v:16:y:2025:i:1:d:10.1038_s41467-025-63675-w
    DOI: 10.1038/s41467-025-63675-w
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