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CCM signaling complex (CSC) is a master regulator governing homeostasis of progestins and their mediated signaling cascades

Abou-Fadel, J.; Jiang, X.; Padarti, A.; Goswami, D.; Smith, M.; Grajeda, B.; Walker, W.; Zhang, J.

2020-06-12 neuroscience
10.1101/2020.06.10.145003 bioRxiv
Show abstract

We demonstrate that a novel signaling network among the CSC and mPRS is dynamically modulated and fine-tuned with intricate feedback regulations in PR negative cells, especially endothelial cells (ECs). Depletion of any of three CCMs (1, 2, 3) genes results in the disruption of non-classic mPRs-mediated signaling in-vitro as well as defective homeostasis of PRG in-vivo. Therefore, we propose the CSC is a master regulator of homeostasis of PRG and its associated classic and non-classic signaling cascades. Assisted with omic approaches, we identified signaling pathways involved and specific biomarkers associated with hemorrhagic events during CCM pathogenesis in-vitro and in-vivo. To our knowledge, this is the first report detailing etiology to predict the occurrence of early hemorrhagic events with a set of serum biomarkers.

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