| 1995 |
p190-B (ARHGAP5) was cloned and shown to contain an N-terminal GTPase domain and a C-terminal Rho GAP domain. A recombinant Rho GAP domain polypeptide demonstrated GAP activity for RhoA, Rac1, and CDC42Hs in vitro. p190-B localizes diffusely in the cytoplasm and in fibrillar patterns co-localizing with the α5β1 integrin receptor for fibronectin. Adhesion of fibronectin-coated latex beads recruited significant amounts of p190-B and Rho to the plasma membrane beneath the bead binding site, establishing an integrin-dependent membrane recruitment mechanism. |
Recombinant protein GAP activity assay (in vitro), immunoprecipitation, immunofluorescence, fibronectin bead adhesion assay |
The Journal of biological chemistry |
High |
8537347
|
| 1998 |
The mouse p190-B (Arhgap5/Gfi2) gene encodes a protein with ~97% amino acid identity to human p190-B, with a domain architecture comprising an N-terminal GTPase domain, a middle domain of unknown function, and a C-terminal Rho GAP domain distributed across multiple exons. The gene maps to mouse chromosome 12, syntenic with the human 14q locus. |
cDNA cloning, genomic sequencing, Northern blot, multilocus genetic cross mapping |
Biochimica et biophysica acta |
Medium |
9838117
|
| 2000 |
Transient transfection of a p190-B expression construct into MCF-10A human mammary epithelial cells disrupted the actin cytoskeleton, indicating that p190-B modulates Rho-regulated signaling pathways that influence cell migration and invasion. |
Transient transfection, actin cytoskeleton staining (immunofluorescence) |
Cell growth & differentiation |
Medium |
10939588
|
| 2003 |
p190-B haploinsufficiency in mice caused decreased ductal outgrowth due to reduced proliferation in cap cells of terminal end buds, phenocopying IGF-I receptor null mammary epithelium. p190-B-deficient epithelial transplants failed to produce outgrowths in cleared fat pads, confirming a cell-autonomous role. Decreased expression of IRS-1 and IRS-2 was observed in TEBs of p190-B heterozygous mice, placing p190-B upstream of IGF signaling. |
p190-B knockout/heterozygous mouse model, mammary transplantation, proliferation assays, Western blot for IRS-1/2 |
Molecular endocrinology |
High |
12637587
|
| 2006 |
Tetracycline-inducible overexpression of p190-B in the developing mammary gland caused abnormal terminal end buds with aberrant budding, thickened stroma, increased branching, delayed ductal elongation, and hyperplastic lesions during pregnancy. Overexpression altered IGF pathway signaling and caused discontinuous myoepithelial cell layer and macrophage infiltration, demonstrating that precise control of p190-B activity is required for normal branching morphogenesis. |
Inducible transgenic mouse overexpression, histology, immunostaining, signaling analysis |
Molecular endocrinology |
High |
16469769
|
| 2007 |
p190-B-deficient embryos displayed defects in embryonic mammary bud development (smaller buds, fewer cells, impaired mesenchymal proliferation). These phenotypes overlapped with IRS-1/2 double knockout embryos, placing p190-B upstream of IGF-IRS signaling in epithelial-mesenchymal interactions required for mammary bud morphogenesis. |
p190-B knockout mouse model, IRS-1/2 double knockout, IGF-1R knockout, embryonic mammary bud analysis, proliferation assays |
Developmental biology |
High |
17662267
|
| 2008 |
ARHGAP5 (p190-B RhoGAP) is amplified at chromosomal region 14q12 in hepatocellular carcinoma cells. p190-B promotes cell spreading and migration by negatively regulating RhoA activity in Huh-7 hepatocellular carcinoma cells. |
High-density oligonucleotide microarray (copy number), RhoA activity assay, cell spreading and migration assays, RNAi knockdown |
Cancer letters |
Medium |
18996642
|
| 2009 |
Loss of p190-B RhoGAP in hematopoietic stem cells (HSCs) enhanced long-term engraftment during serial transplantation and maintained functional HSC-enriched cells. p190-B deficiency repressed upregulation of p16(Ink4a) in HSCs during transplantation, providing a mechanism for p190-B-mediated control of HSC self-renewal. |
p190-B knockout mouse, serial bone marrow transplantation, ex vivo culture, transcriptional analysis (p16Ink4a) |
Blood |
High |
19713466
|
| 2013 |
p190-B deletion in mice causes hematopoietic failure during ontogeny in a non-cell-autonomous manner. p190-B-/- mesenchymal stem cells (MSCs) are dysfunctional in supporting hematopoiesis due to impaired Wnt signaling, and p190-B loss alters MSC lineage fate specification to osteoblast and adipocyte lineages, disrupting the functional bone marrow niche. |
p190-B knockout mouse, MSC/bone marrow co-culture, Wnt signaling assay, colony-forming unit assays (CFU-F, CFU-adipocyte, CFU-osteoblast) |
Leukemia |
High |
23563238
|
| 2013 |
miR-486-5p directly binds to the 3'-UTR of ARHGAP5 mRNA (validated by luciferase assay), reducing ARHGAP5 expression and thereby inhibiting lung cancer cell migration and invasion. Reduced ARHGAP5 expression phenocopied miR-486-5p overexpression. |
Luciferase reporter assay, qRT-PCR, Western blot, migration/invasion assays, in vivo metastasis model |
Oncogene |
Medium |
23474761
|
| 2015 |
miR-744 directly interacts with the ARHGAP5 promoter and transcriptionally upregulates ARHGAP5 expression (rather than the typical miRNA mechanism of mRNA degradation). Reintroduction of ARHGAP5 mimicked miR-744-enhanced migration and invasion in NPC cells, while silencing ARHGAP5 abrogated miR-744-induced effects. |
Promoter luciferase assay, qRT-PCR, Western blot, migration/invasion assays, gain/loss-of-function |
Oncotarget |
Medium |
25961434
|
| 2016 |
CD147 promotes hepatocellular carcinoma cell motility by upregulating p190-B RhoGAP at both mRNA and protein levels, leading to RhoA deactivation, reduced stress fiber and focal adhesion formation. Silencing p190-B blunted CD147's effect on cell movement, placing p190-B downstream of CD147 in a motility pathway. |
Wound-healing assay, RhoA biosensor (FRET-based), qRT-PCR, Western blot, immunofluorescence, siRNA knockdown |
Cancer cell international |
Medium |
27601938
|
| 2017 |
A point mutation in p190B RhoGAP (ARHGAP5) in a patient with fatal systemic capillary leak syndrome impairs RhoB inactivation in dermal microvascular endothelial cells. TNF transiently activates RhoB in ECs coincident with barrier leak, and p190B is required for RhoB inactivation and barrier recovery. siRNA knockdown of p190B in normal ECs replicated the patient-derived EC phenotype of impaired barrier recovery. |
Patient-derived endothelial cell culture, siRNA knockdown, transendothelial electrical resistance (TEER), permeability assay, RhoB activity measurement |
The Journal of experimental medicine |
High |
29097442
|
| 2017 |
Loss of p190-B RhoGAP in HSPCs normalizes TGF-β1 levels and p38MAPK activity. p190-B loss promotes symmetric retention of multi-lineage capacity in single HSPCs, linking p190-B-RhoGTPase activity to a non-canonical TGF-β–p38MAPK signaling network that controls HSPC fate choice and self-renewal. |
p190-B knockout mouse, HSPC transplantation, single-cell culture, TGF-β1 ELISA, p38MAPK activity assay, asymmetric division analysis |
Nature communications |
High |
28176763
|
| 2018 |
SIRT1 suppresses ARHGAP5 expression by physically associating with transcription factor c-JUN and deacetylating and inhibiting c-JUN's transcriptional activity, reducing ARHGAP5 promoter-driven transcription. ARHGAP5 knockdown inhibited GC cell migration and invasion, and ARHGAP5 was found to be in the SIRT1-mediated inhibition pathway. |
mRNA microarray, Co-immunoprecipitation (SIRT1-c-JUN interaction), deacetylation assay, ChIP, migration/invasion assays, in vivo metastasis model |
Cell death & disease |
Medium |
30250020
|
| 2019 |
ANGPTL4 promotes blood-brain barrier disruption via the ARHGAP5/RhoA/MYL5 signaling cascade in brain microvascular endothelial cells infected with meningitic E. coli. ARHGAP5 acts as an intermediate between ANGPTL4 and RhoA activation, with downstream MYL5 negatively regulating barrier function. |
siRNA knockdown, recombinant ANGPTL4 treatment, permeability assay in vitro and in vivo, Western blot, RhoA activity assay |
Pathogens |
Medium |
31766605
|
| 2020 |
ARHGAP5 promotes colorectal cancer epithelial-mesenchymal transition by negatively regulating RhoA activity. CREB1 transcriptionally upregulates ARHGAP5 expression (established by ChIP), and decreased miR-137 contributes to ARHGAP5 mRNA stability. ARHGAP5 suppression reduces CRC cell metastasis in vitro and in xenograft models. |
ChIP assay, RNAi, RhoA activity assay, EMT markers, RNA-Seq, xenograft models, Western blot |
Theranostics |
Medium |
32483433
|
| 2022 |
ADAR1 interacts with METTL3 and edits METTL3 mRNA to change its miR-532-5p binding site, leading to increased METTL3 protein, which then targets ARHGAP5 mRNA for m6A modification recognized by YTHDF1, promoting ARHGAP5 expression and breast cancer progression. |
Co-IP (ADAR1-METTL3), RNA editing sequencing, m6A-RIP, miRNA luciferase assay, in vivo tumor growth, knockdown/overexpression |
International journal of molecular sciences |
Medium |
36077054
|
| 2022 |
ARHGAP5 promotes ovarian cancer epithelial-mesenchymal transition by regulating Rho GTPase activities. The lncRNA ZFHX2-AS1 interacts with and attenuates DKC1 pseudouridine synthase activity, thereby reducing pseudouridylation of ARHGAP5 mRNA and decreasing its stability. Re-expression of ARHGAP5 partially reversed the tumor-suppressive effects of ZFHX2-AS1. |
RNA pulldown, DKC1 enzymatic activity assay, pseudouridylation assay, in vitro and in vivo functional assays, ARHGAP5 rescue experiments, Rho GTPase activity assays |
Cellular signalling |
Medium |
39368791
|
| 2022 |
miR-486-5p directly targets the 3'-UTR of ARHGAP5 mRNA (validated by luciferase reporter assay in HTR8/SVneo trophoblast cells), reducing ARHGAP5 expression and suppressing trophoblast cell migration and invasion. ARHGAP5 siRNA knockdown phenocopied miR-486-5p overexpression. |
Luciferase reporter assay (ARHGAP5 3'-UTR), RT-qPCR, Western blot, wound healing assay, invasion assay, siRNA |
Placenta |
Medium |
35477045
|
| 2022 |
ARHGAP5 missense variants in the RhoGAP domain identified in IHH patients; arhgap5 zebrafish mutants did not display significant GnRH3-GFP+ neuronal area abnormalities, providing a negative result for a developmental role of ARHGAP5 orthologs in GnRH neuronal development in zebrafish. |
Exome sequencing, in vitro GAP activity assay (for ARHGAP35 variant), zebrafish gnrh3:egfp modeling |
Genetics in medicine |
Low |
36178483
|
| 2024 |
DEC1 directly regulates ARHGAP5 transcription in extravillous trophoblasts (EVTs); DEC1 inhibits trophoblast invasion by directly regulating ARHGAP5 transcription. BaA suppresses DEC1 (by promoting abnormal methylation), leading to altered ARHGAP5 expression and impaired trophoblast invasion. |
RNA-seq, ChIP (DEC1 on ARHGAP5 promoter), siRNA knockdown, overexpression, mouse miscarriage model |
Journal of hazardous materials |
Medium |
39191013
|
| 2025 |
CRISPR/Cas9 knockout of p190B (ARHGAP5) in endometrial cancer cells causes actin remodeling with formation of Cross-Linked Actin Networks (CLANs) dependent on the Rho/ROCK pathway, phenocopying p190A (ARHGAP35) knockout. Double knockout of both p190A and p190B is synthetically lethal in endometrial cancer cells, revealing functional redundancy and a synthetic lethal vulnerability. |
CRISPR/Cas9 knockout, actin cytoskeleton imaging, ROCK inhibitor treatment, proteomic analysis, synthetic lethality assay |
bioRxivpreprint |
Medium |
bio_10.1101_2025.10.16.682927
|
| 2025 |
N-cadherin maintains hepatic polarity by facilitating RhoA inactivation through the p120-catenin family member ARVCF and its partner p190B/ARHGAP5. This places p190B downstream of N-cadherin/ARVCF and upstream of RhoA in the control of bile canaliculi formation. |
Live imaging, FRAP, genetic rescue, RhoA activity assay, co-immunoprecipitation (ARVCF-p190B interaction) |
bioRxivpreprint |
Medium |
bio_10.1101_2025.10.06.680681
|