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Updated: Jul 16, 2026
In-depth Physiological Analysis of Defined Cell Populations in Acute Tissue Slices of the Mouse Vomeronasal Organ
Published on: September 10, 2016
Sensory nerve-derived signaling coordinates oropharyngeal structural organization that supports suckling and
Sa Cha1, Jifan Feng1, Tingwei Guo1
1Center for Craniofacial Molecular Biology, Herman Ostrow School of Dentistry, University of Southern California, Los Angeles, CA, USA.
Insights
Growth factor GDF11, originating from sensory nerves, is vital for soft palate development and coordinated oropharyngeal function. This discovery offers new therapeutic targets for congenital oropharyngeal disorders.
Area of Science:
- Developmental biology
- Neuroscience
- Genetics
Background:
- Proper oropharyngeal function is critical for neonatal survival, involving complex neuromuscular coordination.
- Disruptions in this integration lead to severe neonatal complications, but developmental coordination mechanisms are poorly understood.
Purpose of the Study:
- To elucidate the developmental coordination of neuromuscular architecture supporting oropharyngeal function.
- To identify key molecular regulators of soft palatal muscle development and integration.
Main Methods:
- Single-cell and spatial transcriptomics to analyze gene expression and cellular interactions.
- In vivo physiological assays in neonatal mice to assess oropharyngeal function.
- Pharmacological manipulation to test therapeutic interventions.
Main Results:
- Sensory nerve-derived GDF11 identified as a crucial regulator of soft palatal muscle architecture.
- GDF11 acts via perimysial cells and Akt-FoxO1-Thbs3 signaling to ensure muscle integrity.
- Gdf11 deletion in sensory neurons caused oropharyngeal dysfunction, mimicking human mutations.
- AKT activation partially restored muscle organization and function in mutant mice.
Conclusions:
- Sensory nerve trophic signaling is indispensable for coordinated oropharyngeal morphogenesis and function.
- This study establishes a pre-clinical framework for targeting neuromuscular integration in congenital oropharyngeal disorders.
Abstract:
Proper oropharyngeal function is essential for suckling, feeding, and speech, and relies on the coordinated development of the palate, oropharyngeal musculature, and the cranial nerves that control them. Disruption of this integration leads to severe neonatal complications. However, how neuromuscular architecture is developmentally coordinated to support oropharyngeal function remains unclear. Using single-cell and spatial transcriptomics, we identify trigeminal nerve-derived GDF11 as a crucial regulator of soft palatal muscle architecture that acts through cranial neural crest-derived perimysial cells and is mediated by Akt-FoxO1-Thbs3 signaling to establish muscle structural integrity and bilateral continuity. To assess its functional relevance in vivo, we employ a battery of physiological assays to evaluate oropharyngeal function in neonatal mice and find that sensory neuron-specific Gdf11 deletion recapitulates soft palatal deformities and associated oropharyngeal dysfunction observed in individuals carrying GDF11 mutations, including impaired suckling, reduced oropharyngeal motor efficacy, and abnormal vocalizations. Pharmacological activation of AKT partially restores soft palatal muscle organization and ameliorates associated physiological deficits in Gdf11 mutant mice. Collectively, these findings demonstrate that sensory nerve-derived trophic signaling is indispensable for coordinated oropharyngeal morphogenesis and function, and establish a pre-clinical framework for the therapeutic approach targeting neuromuscular integration in congenital oropharyngeal disorders.
