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抗Human RASA1 抗体:
抗Rat (Rattus) RASA1 抗体:
抗Mouse (Murine) RASA1 抗体:
A somatic RASA1 mutation in addition to the germline RASA1 mutation, was detected within endothelial cells in capillary malformation-arteriovenous malformation.
RASA1 variants are rarely found in children with sporadic capillary malformations of lower limbs without capillary malformation-arteriovenous malformation syndrome.
we demonstrated a novel oncogenic mechanism of PTP1B on affecting PITX1/p120RasGAP in colorectal carcinoma(CRC). Regorafenib inhibited CRC survival through reserving PTP1B-dependant PITX1/p120RasGAP downregulation. PTP1B may be a potential biomarker predicting regorafenib effectiveness, and a potential solution for CRC
RASA1 mutations are associated melanoma tumorigenesis.
MicroRNA-21 reduces RASA1 expression in cervical cancer cell lines and promotes cervical cancer cell migration via RASA1. Furthermore, Ras-induced epithelial-mesenchymal transition contributes to miR-21/RASA1 axis promoting cervical cancer cell migration.
These results and the extreme variable expressivity support the hypothesis that somatic "second hits" are required for the development of vascular anomalies associated with CM-AVM syndrome. In addition, the phenotypes of the affected individuals further clarify that lymphatic manifestations are also part of the phenotypic spectrum of RASA1-related disorders.
results indicate that, mTOR, Bad, or Survivin are not required for p120 RasGAP fragment N to protect cells from cell death; conclude that downstream targets of Akt other than mTORC1, Bad, or survivin mediate fragment N-induced protection or that several Akt effectors can compensate for each other to induce the pro-survival fragment N-dependent responses
The interaction between RASA1 and EPHB4 is an indication of the major cause of capillary malformation with arteriovenous malformation.
Low RASA1 expression is associated with Triple-Negative Breast Cancer.
QKI-5 stabilized RASA1 mRNA via directly binding to the QKI response element region of RASA1, which in turn prevented the activation of the Ras-MAPK signaling pathway, suppressed cellular proliferation and induced cell cycle arrest.
Data show that patients with low level of Ras GTPase-activating protein 1 (RASA1) expression correlated with a significantly poorer survival compared to those with high level of RASA1 expression.
Results show that oncogenic KRAS can activate Rho through miR-31-mediated regulation of RASA1 indicating miR-31 acts as a KRAS effector to modulate invasion and migration in pancreatic cancer.
PTP1B dephosphorylates PITX1 to weaken its protein stability and the transcriptional activity for p120RasGAP gene expression
Data suggest that, in response to netrin-1/netrin receptor (DCC) signaling, p120RasGAP is recruited to growth cones and supports axon outgrowth; p120RasGAP Src homology 2 domains exhibit scaffolding properties sufficient to support axon outgrowth.
Maternal and fetal capillary malformation-arteriovenous malformation due to a novel RASA1 mutation presenting with prenatal non-immune hydrops fetalis have been found.
This is the second largest study on isolated, non-syndromic Port-wine stain; data suggest that GNAQ is the main genetic determinant in this condition. Moreover, isolated port-wine stains are distinct from capillary malformations seen in RASA1 disorders.
Data showed that hypoxia regulated the expression of miR-182 and RASA1 to promote HCC angiogenesis.
p120RasGAP shields Akt from deactivating phosphatases in FGF1 signaling, but loses this ability once cleaved by caspase-3.
Capillary malformation-arteriovenous malformation syndrome (CM-AVM) is an autosomal dominant disorder caused by RASA1 mutations.
Multifocal, small, round-to-oval, pinkish-to-red cutaneous capillary malformations are seen in more than 90% of people with RASA1 mutations.
The data suggest that nitrosylation of H-Ras rearranges the adsorptive potential and intrinsic GTPase activity of H-Ras through modification of C-terminal cysteines of molecule.
RASA1 catalytic activity is essential for the function and development of lymphatic vessel valves.
These results indicate that the caspase-3/p120 RasGAP stress-sensing module impacts on carcinogen-induced liver cancer incidence but not sufficiently so as to affect overall survival.
Double-deficient RASA1-neurofibromin 1 mice developed T cell acute lymphoblastic leukemia/lymphoma, which originated at an early point in T cell development and was dependent on activating mutations in the Notch1 gene.
Rasa1 may have a role in pathogenesis of capillary malformation-arteriovenous malformation in a mouse model
Regulation of Rasa1 translation by miR-132 was seen in severed axons, demonstrating local function within the axon.
RASA1 mutation is responsible for the aberrant lymphatic architecture and functional abnormalities, as visualized in the PKWS subject and in the animal model.
MicroRNA-31 activates the RAS pathway and functions as an oncogenic MicroRNA by repressing RAS p21 GTPase activating protein 1 (RASA1)
14-3-3 negatively regulates the RGC downstream of the PI3-kinase/Akt signaling pathway
Caspase-3 is a stress intensity sensor that controls cell fate by either initiating a RasGAP cleavage-dependent cell resistance program or a cell suicide response mediated by akt.
Data reveal a role for RASA1 as a physiological negative regulator of lymphatic endothelial cell growth that maintains the lymphatic vasculature in a quiescent functional state through its ability to inhibit Ras signal transduction.
Ca2+-dependent monomer and dimer formation switches CAPRI Protein between Ras GTPase-activating protein (GAP) and RapGAP activities
statins inhibit GGPP biosynthesis in the mevalonate pathway, and then inhibit signal transduction in the Ras/ERK and Ras/Akt pathways, thereby inhibiting bFGF, HGF, TGF-beta expression
p120 does not seem directly involved in the modulation of E-cadherin activity
executioner caspases control the extent of their own activation by a feedback regulatory mechanism initiated by the partial cleavage of RasGAP that is crucial for cell survival under adverse conditions
These data indicate that the p120-GAP/syndecan-2 complex at caveolae could provide a docking site for Src to transmit tyrosine signaling.
role of the second caspase-mediated cleavage of RasGAP is to allow the inactivation of the antiapoptotic function of N-terminal fragment
an uncleavable N-terminal RasGAP fragment in insulin-secreting cells has a role in increasing resistance toward apoptotic stimuli without affecting glucose-induced insulin secretion
Data show that fibroblast, endothelial and carcinoma polarity during cell migration requires FAK and is associated with a complex between FAK, p120RasGAP and p190RhoGAP (p190A), leading to p190A tyrosine phosphorylation.
RasGap peptide fragment efficiently increases the overall resistance of beta-cells to noxious stimuli without interfering with the physiological functions of the cells.
The protein encoded by this gene is located in the cytoplasm and is part of the GAP1 family of GTPase-activating proteins. The gene product stimulates the GTPase activity of normal RAS p21 but not its oncogenic counterpart. Acting as a suppressor of RAS function, the protein enhances the weak intrinsic GTPase activity of RAS proteins resulting in the inactive GDP-bound form of RAS, thereby allowing control of cellular proliferation and differentiation. Mutations leading to changes in the binding sites of either protein are associated with basal cell carcinomas. Mutations also have been associated with hereditary capillary malformations (CM) with or without arteriovenous malformations (AVM) and Parkes Weber syndrome. Alternative splicing results in two isoforms where the shorter isoform, lacking the N-terminal hydrophobic region but retaining the same activity, appears to be abundantly expressed in placental but not adult tissues.
, Ras GTPase-activating protein
, vacuolar peduncule
, vacuolar pedunculi
, ras GTPase-activating protein 1
, triphosphatase-activating protein
, GTPase-activating protein
, RAS p21 protein activator (GTPase activating protein RAS p21)
, RAS p21 protein activator 1