Decoding the molecular complexity governing corneal wound closure in vivo
Feret, N.; Caballero Megido, A.; Kalha, S.; Kuony, A.; Fichter, L.; Llorens Garcia, S.; Attina, A.; Nhiri, N.; Jacquet, E.; Viaralet, J.; David, A.; Hirtz, C.; Loulier, K.; Michon, F.
Show abstract
The cornea, the transparent outermost layer of the eye, possesses exceptional wound healing capabilities essential for vision preservation. The complexity of the corneal microenvironment is central to its rapid healing; however, the molecular mechanisms orchestrating this process remain poorly defined, limiting therapeutic advancements. Here, we elucidate the extensive remodeling of the corneal molecular landscape following physical injury. Multi-omics analyses--including transcriptomic, epitranscriptomic, and proteomic profiling--uncover significant induction of epithelial cell plasticity driving wound closure. Moreover, lacrimal gland ablation further suppresses Pax6 expression, highlighting its regulatory role. Our multi-omic approach uniquely reveals bilateral remodeling of the molecular environment, a phenomenon constrained by an intact tear film. Collectively, our findings identify novel molecular factors critical to corneal healing, significantly advancing the understanding of epithelial plasticity. These insights will facilitate the translation of cell plasticity research into innovative strategies for tissue and organ regeneration.
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