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Genipin rescues developmental and degenerative defects in familial dysautonomia models and accelerates axon regeneration. | LitMetric

AI Article Synopsis

Article Abstract

The peripheral nervous system (PNS) is essential for proper body function. A high percentage of the world's population suffers from nerve degeneration or peripheral nerve damage. Despite this, there are major gaps in the knowledge of human PNS development and degeneration; therefore, there are no available treatments. Familial dysautonomia (FD) is a devastating disorder caused by a homozygous point mutation in the gene . FD specifically affects the development and causes degeneration of the PNS. We previously used patient-derived induced pluripotent stem cells (iPSCs) to show that peripheral sensory neurons (SNs) recapitulate the developmental and neurodegenerative defects observed in FD. Here, we conducted a chemical screen to identify compounds that rescue the SN differentiation inefficiency in FD. We identified that genipin restores neural crest and SN development in patient-derived iPSCs and in two mouse models of FD. Additionally, genipin prevented FD degeneration in SNs derived from patients with FD, suggesting that it could be used to ameliorate neurodegeneration. Moreover, genipin cross-linked the extracellular matrix (ECM), increased the stiffness of the ECM, reorganized the actin cytoskeleton, and promoted transcription of yes-associated protein-dependent genes. Last, genipin enhanced axon regeneration in healthy sensory and sympathetic neurons (part of the PNS) and in prefrontal cortical neurons (part of the central nervous system) in in vitro axotomy models. Our results suggest that genipin has the potential to treat FD-related neurodevelopmental and neurodegenerative phenotypes and to enhance neuronal regeneration of healthy neurons after injury. Moreover, this suggests that the ECM can be targeted to treat FD.

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Source
http://dx.doi.org/10.1126/scitranslmed.adq2418DOI Listing

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