Abstract
Cerebral cavernous malformations (CCM) commonly known as cavernous hemangioma are associated with abnormally enlarged thin-walled blood vessels. As a result, these dilated capillaries are prone to leakage and result in hemorrhages. Clinically, such hemorrhages lead to severe headaches, focal neurological deficits, and epileptic seizures. CCM is caused by loss of function mutations in one of the three well-known CCM genes: Krev interaction trapped 1 (KRIT1), OSM, and programmed cell death 10 (PDCD10). Loss of CCM genes have been shown to be synergistically related to decreased Notch signaling and excessive angiogenesis. Despite recent evidences indicating that Notch signaling plays a pivotal role in regulating angiogenesis, the role of Notch in CCM development and progression is still not clear. Here, we provide an update literature review on the current knowledge of the structure of Notch receptor and its ligands, its relevance to angiogenesis and more precisely to CCM pathogenesis. In addition to reviewing the current literatures, this review will also focus on the cross talk between Delta-Notch and vascular endothelial growth factor (VEGF) signaling in angiogenesis and in CCM pathogenesis. Understanding the role of Notch signaling in CCM development and progression might help provide a better insight for novel anti-angiogenic therapies.
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