| Autor: |
Van-Cuong Pham, Claudia Jasmin Rödel, Mariaelena Valentino, Matteo Malinverno, Alessio Paolini, Juliane Münch, Candice Pasquier, Favour C Onyeogaziri, Bojana Lazovic, Romuald Girard, Janne Koskimäki, Melina Hußmann, Benjamin Keith, Daniel Jachimowicz, Franziska Kohl, Astrid Hagelkruys, Josef M Penninger, Stefan Schulte-Merker, Issam A Awad, Ryan Hicks, Peetra U Magnusson, Eva Faurobert, Massimiliano Pagani, Salim Abdelilah-Seyfried |
| Jazyk: |
angličtina |
| Rok vydání: |
2024 |
| Předmět: |
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| Zdroj: |
EMBO Molecular Medicine, Vol 16, Iss 11, Pp 2827-2855 (2024) |
| Druh dokumentu: |
article |
| ISSN: |
1757-4684 |
| DOI: |
10.1038/s44321-024-00152-9 |
| Popis: |
Abstract Cerebral cavernous malformations (CCMs) are anomalies of the cerebral vasculature. Loss of the CCM proteins CCM1/KRIT1, CCM2, or CCM3/PDCD10 trigger a MAPK-Krüppel-like factor 2 (KLF2) signaling cascade, which induces a pathophysiological pattern of gene expression. The downstream target genes that are activated by KLF2 are mostly unknown. Here we show that Chromobox Protein Homolog 7 (CBX7), component of the Polycomb Repressive Complex 1, contributes to pathophysiological KLF2 signaling during zebrafish cardiovascular development. CBX7/cbx7a mRNA is strongly upregulated in lesions of CCM patients, and in human, mouse, and zebrafish CCM-deficient endothelial cells. The silencing or pharmacological inhibition of CBX7/Cbx7a suppresses pathological CCM phenotypes in ccm2 zebrafish, CCM2-deficient HUVECs, and in a pre-clinical murine CCM3 disease model. Whole-transcriptome datasets from zebrafish cardiovascular tissues and human endothelial cells reveal a role of CBX7/Cbx7a in the activation of KLF2 target genes including TEK, ANGPT1, WNT9, and endoMT-associated genes. Our findings uncover an intricate interplay in the regulation of Klf2-dependent biomechanical signaling by CBX7 in CCM. This work also provides insights for therapeutic strategies in the pathogenesis of CCM. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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