| 1998 |
GAS7 inhibition in terminally differentiating cerebellar cultures impedes neurite outgrowth from maturing Purkinje cells, and GAS7 overexpression in undifferentiated neuroblastoma cells promotes neurite-like outgrowth, establishing a direct role for GAS7 in neuronal morphological differentiation. |
In situ hybridization, immunocytochemistry, antisense inhibition in primary cerebellar cultures, overexpression in neuroblastoma cells |
Proceedings of the National Academy of Sciences of the United States of America |
Medium |
9736752
|
| 1999 |
The Gas7 gene encodes two protein isoforms (Gas7 and Gas7-cb) by alternative splicing from distinct 5' exons; Gas7 is predominant in cerebrum and growth-arrested fibroblasts, while Gas7-cb is predominant in cerebellum, with unique N-terminal sequences. |
RNase protection assay, Western blot, genomic BAC characterization, cDNA cloning |
Genomics |
Medium |
10552931
|
| 2002 |
GAS7 directly binds F-actin via its C-terminal domain, localizes near the plasma membrane in membrane ruffles via its C-terminal domain, promotes actin assembly and crosslinking of actin filaments, and induces membrane outgrowth requiring actin polymerization. |
F-actin affinity chromatography, purified His-Gas7 direct binding assay, cytochalasin D treatment, electron microscopy, ectopic overexpression with domain deletion mutants |
Experimental cell research |
High |
11795944
|
| 2003 |
MLL-GAS7 fusion protein transforms multipotent hematopoietic progenitors and impairs their differentiation while enhancing in vitro growth, and induces mixed lineage leukemias in mice, acting through a dimerization-dependent mechanism. |
Retroviral transduction/transplantation assay in mice, in vitro colony-forming assays, immunophenotyping |
Cancer cell |
Medium |
12620410
|
| 2003 |
GAS7 overexpression in PC12 cells induces expanded cell morphology and spike-like processes resembling early neurite formation; endogenous rat Gas7 is transiently elevated prior to NGF-promoted neurite outgrowth; antisense inhibition of Gas7 reduces NGF-promoted neurite outgrowths, establishing Gas7 as an early-stage intermediary in NGF-induced neuronal differentiation. |
Overexpression in PC12 cells, antisense oligonucleotide knockdown, NGF stimulation assay, RT-PCR |
Journal of neuroscience research |
Medium |
14515354
|
| 2003 |
Hoxa7 and Hoxa9 contribute to MLL-GAS7-mediated leukemogenesis as downstream targets; Hoxa7/9 deficiency does not abolish transformation by MLL-GAS7 but increases disease latency and reduces penetrance, placing these Hox genes downstream of MLL-GAS7 in the leukemogenic pathway. |
Retroviral transduction/transplantation in Hoxa7- and Hoxa9-knockout mice, in vitro colony-forming assays, epistasis analysis |
Blood |
Medium |
15070702
|
| 2005 |
Human GAS7 isoforms hGas7-a (FCH domain only) and hGas7-b (WW + FCH domains) differentially induce neurite-like processes: hGas7-a preferentially elicits lamellipodia, while hGas7-b elicits filopodia, implicating the WW domain in filopodia and the FCH domain in lamellipodia formation. |
Transfection of Neuro-2a and SH-SY5Y cells with isoform-specific constructs, quantitative PCR, protein expression analysis |
Journal of neuroscience research |
Medium |
15948147
|
| 2008 |
GAS7b expression is transiently upregulated during chondrogenic differentiation of human MSCs downstream of ERK1/2 and SOX9 signaling; antisense inhibition of hGas7b impairs chondrogenesis, but Gas7b inhibition does not affect the p-ERK/SOX9 pathway, placing Gas7b downstream of ERK1/2 and SOX9. |
Antisense oligonucleotides, siRNA knockdown of SOX9, ERK inhibitor PD98059, aggregate culture chondrogenesis assay, Western blot, RT-PCR |
Osteoarthritis and cartilage |
Medium |
18455446
|
| 2009 |
Gas7 stabilizes tubulin sheet intermediates during microtubule polymerization, promoting microtubule elongation without catastrophe; in the absence of Gas7, sheet-like structures were rarely observed and were fragile, demonstrating that Gas7 enhances microtubule polymerization by stabilizing sheet intermediates. |
Dark-field microscopy real-time observation, electron microscopy, in vitro microtubule polymerization assay with and without Gas7 |
Journal of molecular biology |
High |
19580814
|
| 2010 |
Gas7 co-localizes and physically interacts with N-WASP via WW-Pro domain interaction (not SH3-Pro) in growth cones of hippocampal neurons and recruits the Arp2/3 complex in a Cdc42-independent manner to promote membrane protrusions and neurite outgrowth. |
Co-immunoprecipitation, co-localization in Neuro-2a cells and hippocampal neurons, domain mutant analysis, Arp2/3 recruitment assay, Cdc42 dominant-negative experiment, siRNA knockdown |
The Journal of biological chemistry |
High |
20150425
|
| 2012 |
Gas7-deficient mice show age-dependent motor activity defects associated with decreased spinal motor neuron numbers, reduced muscle strength, altered muscle fiber composition (fewer fast fibers in soleus), and reduced nerve terminal sprouting at neuromuscular junctions. |
Gas7-deficient mouse genetic model, motor function testing, histomorphometry, MHC I/II immunostaining, NMJ analysis |
PloS one |
Medium |
22662195
|
| 2013 |
Gas7 knockdown using shRNA decreases Runx2 expression and its target genes (alkaline phosphatase, type I collagen, osteocalcin, osteopontin) and reduces mineralization; ectopic Gas7 expression induces Runx2-dependent transcriptional activity and osteoblast differentiation, establishing Gas7 as a regulator of osteogenesis upstream of Runx2. |
shRNA knockdown, ectopic overexpression, Runx2 transcriptional reporter assay, gene expression analysis, mineralization assay in MSC cultures |
Stem cells international |
Medium |
23840221
|
| 2018 |
p53 directly regulates GAS7 gene expression; GAS7 associates with CYFIP1 and the WAVE2 complex to suppress breast cancer metastasis by blocking CYFIP1–Rac1 interaction, actin polymerization, and β1-integrin/FAK/Src signaling. |
ChIP/transcriptional analysis establishing p53 regulation of GAS7, co-immunoprecipitation of GAS7 with CYFIP1/WAVE2, Rac1 interaction assay, actin polymerization assay, signaling pathway analysis by Western blot |
Oncogene |
Medium |
29706651
|
| 2019 |
The GAS7 F-BAR domain forms two-dimensional sheet-like assemblies on flat membranes through unique hydrophilic loops; this assembly is required for phagocytic cup formation in macrophages, and mutations of the hydrophilic loops abolish both membrane localization of GAS7 and phagocytosis. |
Super-resolution microscopy, cryo-EM/electron microscopy of GAS7 on liposomes, site-directed mutagenesis of hydrophilic loops, phagocytosis assay in macrophages, membrane localization assay |
Nature communications |
High |
31628328
|
| 2019 |
The hGas7c SH3 domain adopts a typical β-barrel fold but exhibits a non-canonical ligand-binding mode, with chemical shift perturbations localized to the RT-loop rather than the canonical hydrophobic pockets, indicating distinctive ligand-binding specificity. |
Solution NMR structure determination, NMR titration with proline-rich peptide P41 and phage-display-selected peptides |
Biochemical and biophysical research communications |
High |
31296381
|
| 2020 |
Gas7 localizes to mitochondria in neurons; Gas7 knockout leads to mitochondrial elongation and perinuclear clustering, increased mitochondrial fusion proteins, increased PKA-dependent phosphorylation of Drp-1, and reduced PINK1 expression and PINK1-mediated phosphorylation of Mfn-2, Parkin, and ubiquitin; ectopic Gas7 expression restores normal mitochondrial morphology and PINK1 levels. |
Gas7-knockout mouse, subcellular fractionation, immunofluorescence colocalization, Western blot for fusion/fission proteins and phospho-targets, ectopic Gas7 rescue in null neurons |
FASEB bioAdvances |
Medium |
32161906
|
| 2021 |
GAS7 deficiency accelerates metastasis in MYCN-driven neuroblastoma by downregulating genes involved in cell-cell interaction and disrupting contact among tumor cells, and is associated with increased MYCN protein levels; GAS7 expression is suppressed by MYCN amplification. |
Zebrafish and mammalian GAS7-deficient neuroblastoma models with MYCN overexpression/amplification, expression profiling, ultrastructural analysis, in vivo metastasis assay |
Cancer research |
Medium |
33602789
|
| 2023 |
Gas7 acts as a novel dendritic spine initiation factor; upon neuronal activation, Gas7 clusters at spine initiation hotspots in a PI3K-dependent manner requiring an intact F-BAR domain, recruits N-WASP and actin via Arp2/3 complex, and promotes new dendritic spine formation; Gas7 overexpression increases and knockdown decreases spine density in hippocampal neurons. |
Bicuculline activation of organotypic hippocampal slices, live imaging, PI3K inhibitor experiments, F-BAR domain mutants, N-WASP and actin colocalization, Arp2/3 inhibition, gain- and loss-of-function spine density quantification |
eNeuro |
Medium |
36963834
|
| 2023 |
GAS7 inhibits HCC cell proliferation and migration, induces cell cycle arrest, apoptosis, and autophagy, and enhances oxaliplatin sensitivity by inhibiting the PI3K/Akt signaling pathway; transcription factor Sp1 is responsible for inhibiting Gas7 expression in HCC. |
Functional cell assays (proliferation, migration, apoptosis, autophagy), Western blot for PI3K/Akt pathway, Sp1 transcription factor analysis, oxaliplatin sensitivity assay |
Cellular signalling |
Low |
37769891
|
| 2026 |
PHF20 interacts with GAS7 and promotes its ubiquitin-mediated degradation; loss of PHF20 stabilizes GAS7, which is associated with increased nuclear F-actin assembly and impaired DNA damage repair, sensitizing cutaneous squamous cell carcinoma cells to chemotherapy. |
Co-immunoprecipitation, ubiquitination assay, PHF20 knockdown and GAS7 stabilization measurement, nuclear F-actin imaging, DNA damage assay, in vivo tumor xenograft |
Cell death & disease |
Medium |
42215448
|