| 2013 |
RASAL2 functions as a RasGAP tumor and metastasis suppressor in breast cancer; its ablation promotes Ras hyperactivation, tumor growth, progression, and metastasis in mouse models, establishing that RASAL2 loss is an alternative mechanism of activating Ras in cancer. |
Genetic ablation (knockout mouse models), in vivo tumor/metastasis assays, human breast cancer mutation/expression analysis |
Cancer cell |
High |
24029233
|
| 2014 |
In triple-negative breast cancer (TNBC), RASAL2 acts independently of its RAS-GAP catalytic activity and instead promotes RAC1 signaling by binding and antagonizing the RAC1-GAP protein ARHGAP24, thereby driving mesenchymal invasion and metastasis. |
Co-immunoprecipitation (binding of RASAL2 to ARHGAP24), RAS-GAP catalytic mutant rescue experiments, RAC1 activity assays, shRNA knockdown/overexpression in TNBC cells |
The Journal of clinical investigation |
High |
25384218
|
| 2014 |
RASAL2 knockdown in ovarian cancer cells activates the Ras-ERK pathway to promote EMT, migration, invasion, and tumor formation; pharmacological inhibition of the Ras-ERK pathway reverses the functional effects of RASAL2 depletion. |
shRNA knockdown, in vitro migration/invasion assays, in vivo tumor formation, ERK pathway inhibition rescue |
Oncotarget |
Medium |
25216515
|
| 2012 |
RASAL2 physically interacts with ECT2 and regulates RHO GTPase activity in astrocytoma cells; RASAL2 knockdown causes conversion to an amoeboid migratory phenotype, identifying a role in mesenchymal-amoeboid transition. |
Cytoplasmic fractionation followed by ECT2 immunoprecipitation and mass spectrometry to identify RASAL2 as an ECT2-binding partner; RHO activity assay; RNA interference knockdown with phenotypic readout |
The American journal of pathology |
Medium |
22683310
|
| 2017 |
RASAL2 suppresses bladder cancer stemness and EMT through the MAPK/SOX2 signaling axis; inhibition of ERK activity or knockdown of SOX2 reverses the stemness and mesenchymal properties induced by RASAL2 deficiency. |
Gain- and loss-of-function experiments in bladder cancer cells, ERK inhibitor and SOX2 siRNA rescue experiments, in vivo xenograft assays |
Cell death & disease |
Medium |
28182001
|
| 2018 |
RASAL2 inhibits bladder cancer angiogenesis by suppressing AKT phosphorylation, which in turn reduces ETS1 expression and VEGFA levels; a negative correlation between RASAL2 and VEGFA/CD31 was confirmed in xenografts and human specimens. |
shRNA/siRNA knockdown and ectopic overexpression, Western blot for p-AKT/ETS1/VEGFA, in vivo xenograft and human specimen correlation |
Cellular signalling |
Medium |
29702203
|
| 2018 |
RASAL2 knockdown in CRC cells promotes YAP1 phosphorylation, cytoplasmic retention, and ubiquitination, thereby activating the Hippo pathway through the LATS2/YAP1 axis; this oncogenic property was confirmed by co-immunoprecipitation. |
siRNA/shRNA knockdown, overexpression, expression microarray screening, co-immunoprecipitation, double immunofluorescence staining, in vivo studies |
Molecular cancer |
Medium |
30037330
|
| 2018 |
RASAL2 activates GSK3β by reducing its Ser9 phosphorylation and subsequently decreases c-FOS and VEGFA expression to inhibit tumor angiogenesis in renal cell carcinoma. |
shRNA knockdown and overexpression, Western blot for p-GSK3β/c-FOS/VEGFA, specific inhibitor and siRNA rescue experiments, in vitro and in vivo angiogenesis assays |
Cell death & disease |
Medium |
30158581
|
| 2019 |
IPO5 binds to the NLS sequence of RASAL2 to mediate its nuclear translocation; nuclear RASAL2 is associated with RAS signal activation, thereby promoting colorectal cancer progression. |
Mass spectrometry, co-immunoprecipitation, subcellular fractionation, immunofluorescence, in vivo and in vitro functional experiments |
Journal of experimental & clinical cancer research : CR |
Medium |
31288861
|
| 2021 |
RASAL2 GAP activity suppresses negative feedback regulators SPRY1/2 and, together with EGFR upregulation, sustains basal RAS activity in TNBC; co-inhibition of MEK1/2 and EGFR induces synergistic apoptosis specifically in RASAL2-high tumors. YAP directly transcriptionally regulates RASAL2 expression. |
Transcriptional profiling, pharmacogenomic data mining, proteomic studies, in vitro and in vivo MEK/EGFR inhibitor combination treatment, GAP catalytic mutant experiments, chromatin immunoprecipitation (YAP-RASAL2 promoter) |
Clinical cancer research |
Medium |
34168046
|
| 2021 |
PRKAA/AMPKα phosphorylates RASAL2 at Ser351 under glucose starvation; non-phosphorylated RASAL2 recruits phosphatase PPM1B to attenuate AMPKα phosphorylation and suppress basal autophagy, while phosphorylated RASAL2 binds the PIK3C3/VPS34-ATG14-BECN1 complex to increase PIK3C3 activity and promote autophagy, acting as a molecular switch. |
Co-immunoprecipitation (RASAL2 with PPM1B; phospho-RASAL2 with PIK3C3 complex), phosphorylation site mutagenesis (S351), double-knockout cells, PIK3C3 activity assay, autophagy flux assays |
Autophagy |
High |
33563064
|
| 2019 |
Rasal2 knockout in MCF-7 breast cancer cells enhances exosomal release and increases autophagy-related proteins in the exosomal fraction; autophagy inhibition (3-MA) abrogates while autophagy blockade (chloroquine) facilitates Rasal2 KO-induced secretory autophagy-driven exosome release and consequent cancer cell proliferation. |
CRISPR-Cas9 knockout, exosome isolation and characterization, autophagy inhibitor treatments, cell proliferation assays |
Molecular and cellular biochemistry |
Medium |
31473883
|
| 2019 |
Phosphorylation of Rasal2 at Serine 237 promotes tumor growth in both ER+ and ER- breast cancer cells; p-Rasal2 and non-p-Rasal2 exert their effects on cancer progression via exosome-mediated transport, with the p-Rasal2/non-p-Rasal2 ratio helping determine whether total Rasal2 acts as a tumor suppressor (ER+) or promoter (ER-). |
Western blot for phospho-Ser237-Rasal2, exosome purification and characterization by TEM and flow cytometry, in vivo and in vitro tumor growth experiments |
EBioMedicine |
Medium |
31759919
|
| 2017 |
Rasal2 deficiency impairs adipogenesis in vitro and in vivo by increasing Ras and ERK activity in preadipocytes; Ras inhibition (but not ERK inhibition) rescues impaired adipogenesis, indicating that Rasal2 promotes adipogenesis by repressing Ras activity in an ERK-independent manner. |
Insertional mutant mice (Rasal2-deficient), 3T3-L1 preadipocyte siRNA knockdown, Ras/ERK activity assays, pharmacological rescue with Ras and MEK inhibitors |
Molecular metabolism |
Medium |
28580280
|
| 2022 |
H. pylori infection induces RASAL2 expression via NF-κB directly binding the RASAL2 promoter; RASAL2 then inhibits protein phosphatase 2A (PP2A) activity through direct binding, leading to AKT activation and increased β-catenin transcriptional activity to drive gastric tumorigenesis. |
Chromatin immunoprecipitation (NF-κB at RASAL2 promoter), co-immunoprecipitation (RASAL2-PP2A), PP2A activity assay, gene silencing and ectopic overexpression, patient-derived organoids, in vivo xenograft models |
Gastroenterology |
High |
35134322
|
| 2022 |
RASAL2 promotes prostate cancer cell proliferation and G1-to-S phase transition by facilitating AKT phosphorylation, which in turn increases cyclin D1 (CCND1) expression; a positive correlation between RASAL2 and cyclin D1 was confirmed in xenografts and clinical specimens. |
shRNA knockdown and overexpression, cell cycle analysis, Western blot for p-AKT/cyclin D1, in vivo xenograft studies, clinical specimen correlation |
Cell death discovery |
Medium |
35668070
|
| 2022 |
RASAL2 deficiency attenuates hepatic steatosis by activating AKT signaling, which upregulates TET1 expression and promotes MTTP expression through DNA hydroxymethylation, increasing VLDL secretion from the liver. |
Chromatin immunoprecipitation assays, hydroxymethylated DNA immunoprecipitation (hMeDIP), in vivo VLDL secretion assay (tyloxapol injection), high-fat diet mouse model, in vitro hepatocyte model |
Journal of clinical and translational hepatology |
Medium |
36643045
|
| 2022 |
RASAL2 promotes PDAC progression by accumulating TIAM1 expression: RASAL2 inhibits YAP1 phosphorylation (stabilizing YAP1), which increases TIAM1 mRNA expression and suppresses TIAM1 protein ubiquitination, thereby enhancing YAP1/TIAM1 signaling. |
shRNA knockdown and overexpression, Western blot for YAP1 phosphorylation/TIAM1, ubiquitination assays, in vitro and in vivo functional studies |
International journal of biological sciences |
Medium |
35844783
|
| 2023 |
CAMSAP2 physically interacts with RASAL2 and facilitates its degradation through the ubiquitin-proteasome system, leading to ERK signaling activation and promotion of lung cancer metastasis. |
Proteomic/biochemical interaction analysis (BioGRID prediction followed by biochemical assays), Co-IP, ubiquitin-proteasome pathway assays, siRNA knockdown, in vivo tail vein metastasis model |
Life sciences |
Medium |
38159595
|
| 2025 |
Rasal2 knockout in TNBC cells disrupts autophagic flux and induces secretory autophagy; Rasal2 directly binds Rab27a (confirmed by Co-IP) and inhibits its activity, and Rab27a knockdown suppresses Rasal2 KO-induced autophagic-exosome secretion and TNBC progression. |
CRISPR-Cas9 knockout, siRNA knockdown, Co-immunoprecipitation (RASAL2-Rab27a), confocal microscopy of autophagosome/MVB colocalization, NTA/TEM for exosome characterization, in vivo xenograft |
Journal of translational medicine |
Medium |
40369567
|
| 2025 |
The germline RASAL2 c.2423 A>G variant (p.Y808C) enhances RAS signaling with sustained ERK phosphorylation and increases CRC cell proliferation; mutant cells require higher doses of cetuximab for ERK suppression, conferring resistance to anti-EGFR therapy via abnormal RAS activation. |
Functional cell-based assays (ERK phosphorylation, proliferation), cetuximab dose-response experiments, population frequency analysis |
Scientific reports |
Medium |
40849341
|