RAS p21 protein activator 1 (RASA1) mRNA (RASA1 mRNA)

RAS p21 protein activator 1 (RASA1) mRNA is the transcript encoding the p120GAP protein, a critical negative regulator of the Ras/MAPK signaling pathway (UniProt P14136). The p120GAP protein functions by stimulating the intrinsic GTPase activity of Ras proteins, thereby converting them from an active GTP-bound state to an inactive GDP-bound state (NCBI Gene 5921). This regulation is essential for controlling cell growth, differentiation, and particularly the development of the vascular system. Mutations in the RASA1 gene, which lead to reduced levels or non-functional mRNA and protein, are the primary cause of Capillary Malformation-Arteriovenous Malformation (CM-AVM) syndrome and Parkes Weber syndrome (PubMed 12872123). In these conditions, the loss of RASA1-mediated inhibition results in overactive Ras signaling, leading to abnormal blood vessel formation and vascular lesions (PubMed 17041601). While RASA1 itself is often viewed as a tumor suppressor in various cancers, therapeutic strategies targeting its mRNA are primarily focused on restoration or modulation in the context of genetic vascular disorders. Current research explores the use of mRNA replacement therapies to restore p120GAP function or antisense oligonucleotides to correct splicing defects (PubMed 30217816). Additionally, microRNA-mediated regulation of RASA1 mRNA is being investigated as a potential therapeutic avenue in oncology. No RASA1 mRNA-targeted therapies are currently approved for clinical use, but the target remains a significant focus for treating hereditary vascular malformations.

Other names

p120GAP mRNAGAP mRNACM-AVM1 mRNAPKWS mRNARAS p21 protein activator 1 transcript

mRNA replacement, microRNA-mediated regulation, or antisense-mediated splice modulation