Cell reports · 2024
Targeting EGLN2/PHD1 protects motor neurons and normalizes the astrocytic interferon response.
СтатьяПоддержка исследования: вне правительства СШАНазвание и аннотация: Перевод пока не подготовлен
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Germeys Christine, Vandoorne Tijs, Davie Kristofer, Poovathingal Suresh, Heeren Kara, Vermeire Wendy, Nami FatemehArefeh, Moisse Matthieu, Quaegebeur Annelies, Sierksma Annerieke, Rué Laura, Sicart Adrià, Eykens Caroline, De Cock Lenja, De Strooper Bart, Carmeliet Peter, Van Damme Philip, De Bock Katrien, Van Den Bosch Ludo
Аннотация
Neuroinflammation and dysregulated energy metabolism are linked to motor neuron degeneration in amyotrophic lateral sclerosis (ALS). The egl-9 family hypoxia-inducible factor (EGLN) enzymes, also known as prolyl hydroxylase domain (PHD) enzymes, are metabolic sensors regulating cellular inflammation and metabolism. Using an oligonucleotide-based and a genetic approach, we showed that the downregulation of Egln2 protected motor neurons and mitigated the ALS phenotype in two zebrafish models and a mouse model of ALS. Single-nucleus RNA sequencing of the murine spinal cord revealed that the loss of EGLN2 induced an astrocyte-specific downregulation of interferon-stimulated genes, mediated via the stimulator of interferon genes (STING) protein. In addition, we found that the genetic deletion of EGLN2 restored this interferon response in patient induced pluripotent stem cell (iPSC)-derived astrocytes, confirming the link between EGLN2 and astrocytic interferon signaling. In conclusion, we identified EGLN2 as a motor neuron protective target normalizing the astrocytic interferon-dependent inflammatory axis in vivo, as well as in patient-derived cells.