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Runx1 Controls Auditory Sensory Neuron Diversity in Mice

Overview
Journal Dev Cell
Publisher Cell Press
Date 2023 Feb 21
PMID 36800995
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Abstract

Sound stimulus is encoded in mice by three molecularly and physiologically diverse subtypes of sensory neurons, called Ia, Ib, and Ic spiral ganglion neurons (SGNs). Here, we show that the transcription factor Runx1 controls SGN subtype composition in the murine cochlea. Runx1 is enriched in Ib/Ic precursors by late embryogenesis. Upon the loss of Runx1 from embryonic SGNs, more SGNs take on Ia rather than Ib or Ic identities. This conversion was more complete for genes linked to neuronal function than to connectivity. Accordingly, synapses in the Ib/Ic location acquired Ia properties. Suprathreshold SGN responses to sound were enhanced in Runx1 mice, confirming the expansion of neurons with Ia-like functional properties. Runx1 deletion after birth also redirected Ib/Ic SGNs toward Ia identity, indicating that SGN identities are plastic postnatally. Altogether, these findings show that diverse neuronal identities essential for normal auditory stimulus coding arise hierarchically and remain malleable during postnatal development.

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References
1.
Foldy C, Darmanis S, Aoto J, Malenka R, Quake S, Sudhof T . Single-cell RNAseq reveals cell adhesion molecule profiles in electrophysiologically defined neurons. Proc Natl Acad Sci U S A. 2016; 113(35):E5222-31. PMC: 5024636. DOI: 10.1073/pnas.1610155113. View

2.
Chen C, Broom D, Liu Y, de Nooij J, Li Z, Cen C . Runx1 determines nociceptive sensory neuron phenotype and is required for thermal and neuropathic pain. Neuron. 2006; 49(3):365-77. DOI: 10.1016/j.neuron.2005.10.036. View

3.
Meng X, Murali S, Cheng Y, Lu J, Hight A, Kanumuri V . Increasing the expression level of ChR2 enhances the optogenetic excitability of cochlear neurons. J Neurophysiol. 2019; 122(5):1962-1974. PMC: 6879948. DOI: 10.1152/jn.00828.2018. View

4.
Allan D, Thor S . Transcriptional selectors, masters, and combinatorial codes: regulatory principles of neural subtype specification. Wiley Interdiscip Rev Dev Biol. 2015; 4(5):505-28. PMC: 4672696. DOI: 10.1002/wdev.191. View

5.
Tan Y, Cahan P . SingleCellNet: A Computational Tool to Classify Single Cell RNA-Seq Data Across Platforms and Across Species. Cell Syst. 2019; 9(2):207-213.e2. PMC: 6715530. DOI: 10.1016/j.cels.2019.06.004. View