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

By Johnathan Abou-Fadel, Xiaoting Jiang, Akhil Padarti, Dinesh Goswami, Mark Smith, Brian Grajeda, Wendy Walker, Jun Zhang

Posted 12 Jun 2020
bioRxiv DOI: 10.1101/2020.06.10.145003

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. ### Competing Interest Statement The authors have declared no competing interest.

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