| 2009 |
TM4SF1 knockdown in endothelial cells prevented filopodia formation, inhibited cell mobility, blocked cytokinesis, and rendered cells senescent. Integrin-α5 and integrin-β1 subunits interacted constitutively with TM4SF1, whereas integrin subunits αV, β3, β5 interacted with TM4SF1 only after VEGF-A or thrombin stimulation. TM4SF1 knockdown substantially inhibited maturation of VEGF-A164-induced angiogenesis in vivo. |
siRNA knockdown, Co-immunoprecipitation, in vivo tumor angiogenesis model |
Cancer research |
High |
19351819
|
| 2011 |
TM4SF1 is necessary for formation of unusually long, thin (~100–300 nm wide), F-actin-poor endothelial cell projections called 'nanopodia'. TM4SF1 localizes in a regularly spaced banded pattern within nanopodia. Live cell imaging showed nanopodia are projected during migration and intercellular interactions. Mass spectrometry demonstrated TM4SF1 interacted with myosin-10 and β-actin. When TM4SF1 was overexpressed (~400 copies/cell vs normal ~90), cells formed more/longer nanopodia but could not polarize or migrate. When expressed at EC-like levels in fibroblasts (~5 normally), cells formed TM4SF1-banded nanopodia and EC-like lamellipodia. |
Live cell imaging (GFP-transduced HUVEC), adenoviral overexpression, immunostaining (light and electron microscopy), mass spectrometry pulldown |
Angiogenesis |
High |
21626280
|
| 2011 |
TM4SF1 is a direct transcriptional target of the androgen receptor (AR); a functional androgen response element was identified in the TM4SF1 promoter by chromatin immunoprecipitation. TM4SF1 mediates prostate cancer cell motility; siRNA knockdown inhibited cell migration. In normal prostate epithelium TM4SF1 localizes apically, whereas in prostate cancer cells it localizes predominantly in the cytoplasm. |
Chromatin immunoprecipitation (ChIP), transcriptomic analysis, siRNA knockdown, wound healing assay, immunohistochemistry |
The Prostate |
High |
21656834
|
| 2014 |
Monoclonal antibodies against TM4SF1's extracellular loop-2 (EL2) domain disrupted human tumor vasculature in a humanized Matrigel plug model and eliminated incorporated PC3 prostate cancer cells, validating TM4SF1 as a therapeutic vascular target. |
Monoclonal antibody generation and in vivo humanized vessel model (ECFC/MSC Matrigel implants in nude mice) |
Angiogenesis |
Medium |
24986520
|
| 2015 |
TM4SF1 is internalized from the plasma membrane of endothelial cells via uncoated cytoplasmic vesicles in a dynamin-dependent, clathrin-independent manner, then transported along microtubules through the cytoplasm and through nuclear pores into the nucleus, as demonstrated by immuno-nanogold transmission electron microscopy. |
Immuno-nanogold transmission electron microscopy, immunofluorescence microscopy, dynamin inhibition |
Biochemical and biophysical research communications |
High |
26241677
|
| 2015 |
TM4SF1 promotes gemcitabine resistance in pancreatic cancer cells by upregulating multidrug resistance genes ABCB1 and ABCC1; silencing TM4SF1 increased gemcitabine sensitivity both in vitro and in vivo in orthotopic tumor models. |
siRNA knockdown, shRNA lentiviral knockdown, qRT-PCR for MDR genes, cell proliferation/apoptosis assays, orthotopic tumor model with bioluminescent imaging |
PloS one |
Medium |
26709920
|
| 2015 |
TM4SF1 promotes breast cancer cell migration via the PI3K/AKT/mTOR pathway; silencing TM4SF1 decreased phosphorylated AKT, p-mTOR, and p-P70S6K levels, while overexpression increased cell migration and decreased apoptosis. |
siRNA knockdown, plasmid overexpression, Western blotting of PI3K/AKT/mTOR pathway components, Matrigel migration assay, flow cytometry |
International journal of clinical and experimental pathology |
Low |
26464650
|
| 2016 |
TM4SF1 knockdown in pancreatic cancer cells reduced migration and invasion and downregulated the expression and enzymatic activity of MMP-2 and MMP-9, as measured by gelatin zymography. |
siRNA/shRNA knockdown, Transwell migration/invasion assay, gelatin zymography, Western blot, orthotopic tumor model |
Cellular physiology and biochemistry |
Medium |
27459514
|
| 2017 |
TM4SF1 co-localizes with DDR1 and physically interacts with DDR1 (by co-immunoprecipitation and double immunofluorescence) in pancreatic cancer cells. TM4SF1 silencing reduced DDR1 expression, impaired invadopodia formation and function, and decreased MMP2 and MMP9 expression; restoring DDR1 rescued these effects, placing TM4SF1 upstream of DDR1-MMP2/9 in an invadopodia-promoting pathway. |
Co-immunoprecipitation, double immunofluorescence co-staining, siRNA knockdown, rescue overexpression of DDR1, invadopodia formation assay, qRT-PCR |
Scientific reports |
High |
28368050
|
| 2017 |
TM4SF1 regulates apoptosis, cell cycle, and ROS metabolism in bladder cancer cells via the PPARγ-SIRT1 feedback loop; knockdown of TM4SF1 induced cell cycle arrest and apoptosis associated with ROS upregulation, and these effects were reversed by GW9662 (PPARγ antagonist) or resveratrol (SIRT1 activator). |
siRNA knockdown, flow cytometry (cell cycle/apoptosis), ROS measurement, pharmacological rescue with GW9662 and resveratrol, in vivo xenograft |
Cancer letters |
Medium |
29175458
|
| 2019 |
TM4SF1 promotes non-small cell lung cancer proliferation, invasion, and chemo-resistance by regulating the expression of DDR1 and its downstream Akt/ERK/mTOR pathway; silencing TM4SF1 reduced DDR1 expression and Akt/ERK/mTOR signaling, enhancing sensitivity to cisplatin and paclitaxel. |
siRNA knockdown, Western blotting (DDR1, p-AKT, p-ERK, mTOR), MTS/clonogenic assay, Transwell assay, flow cytometry, RT-PCR |
Respiratory research |
Medium |
31142317
|
| 2019 |
TM4SF1 is an interacting partner of DVL2 in hepatocellular carcinoma; TM4SF1 overexpression strengthened the DVL2-Axin interaction, leading to activation of Wnt/β-catenin signaling (increased Axin2 and cyclin D1 expression and decreased β-catenin ubiquitination). TM4SF1 expression was induced by Kras signaling. |
Co-immunoprecipitation (TM4SF1-DVL2 and DVL2-Axin interactions), Western blotting, overexpression and knockdown, ubiquitination assay, Kras pathway analysis |
Journal of cellular and molecular medicine |
Medium |
31876386
|
| 2019 |
TM4SF1 overexpression in prostate cancer cells activated ERK1/2 signaling; suppression of ERK1/2 reversed the pro-migratory, pro-invasive, and pro-proliferative effects of TM4SF1 overexpression, placing TM4SF1 upstream of ERK1/2. |
Plasmid overexpression, pharmacological ERK1/2 inhibition, Transwell assay, wound-healing assay, colony formation, EdU staining, Western blotting |
Journal of B.U.ON. |
Low |
31983129
|
| 2020 |
TM4SF1 modulates SOX2 expression in a Wnt/β-catenin activation-dependent manner in colorectal cancer; TM4SF1 knockdown reduced c-Myc expression and c-Myc binding to the SOX2 gene promoter, suppressing EMT (TGF-β1-mediated) and cancer stemness. |
siRNA knockdown, GSEA pathway analysis, Western blotting, ChIP (c-Myc binding to SOX2 promoter), TGF-β1 stimulation, sphere formation assay, xenograft mouse model |
Journal of experimental & clinical cancer research |
Medium |
33153498
|
| 2020 |
TM4SF1 regulates YAP-TEAD interaction in non-small cell lung cancer; TM4SF1 modulated the YAP-TEAD protein-protein interaction and downstream target gene levels, as shown by Co-IP; sh-YAP or YAP-TEAD inhibitor (Peptide 17) reversed TM4SF1-mediated oncogenic effects. |
Co-immunoprecipitation, siRNA/shRNA knockdown, plasmid overexpression, pharmacological inhibition (Peptide 17), Western blotting, xenograft tumor model |
European review for medical and pharmacological sciences |
Medium |
32141552
|
| 2021 |
B7-H3 prevents cellular senescence in colorectal cancer through the AKT/TM4SF1/SIRT1 pathway; blocking this pathway reversed B7-H3-induced resistance to DOX-induced senescence, placing TM4SF1 downstream of AKT and upstream of SIRT1. |
RNA-seq, Western blotting, siRNA knockdown/overexpression of B7-H3, pathway blockade experiments, in vivo tumor model |
Cell death & disease |
Medium |
33958586
|
| 2022 |
TM4SF1 promotes esophageal squamous cell carcinoma cell adhesion, spreading, migration, and invasion in a laminin-dependent manner by physically interacting with integrin α6; the TM4SF1/integrin α6/FAK signaling axis mediates cell migration under laminin-coating conditions, and FAK inhibition or TM4SF1 knockdown attenuated migration and lung metastasis. |
Co-immunoprecipitation, immunofluorescence co-staining, siRNA knockdown, FAK inhibitor treatment, Transwell migration/invasion assay, in vivo lung metastasis model |
Cell death & disease |
High |
35835740
|
| 2023 |
TM4SF1 upregulates MYH9 expression, which activates the NOTCH pathway, thereby promoting cancer stemness and lenvatinib resistance in hepatocellular carcinoma; this pathway was identified by protein mass spectrometry and validated by in vitro and in vivo experiments. |
Protein mass spectrometry (downstream protein identification), bioinformatics, in vitro and in vivo functional assays, Western blotting, lenvatinib-resistant cell line model |
Biology direct |
Medium |
37069693
|
| 2024 |
TM4SF1 forms 'TM4SF1-enriched microdomains' (TMEDs) on the endothelial cell surface that recruit signaling molecules (12 of 18 examined, notably PLCγ and HDAC6) and internalize along microtubules to intracellular locations including the nucleus. When TM4SF1 is knocked down, microtubules become heavily acetylated (despite normal HDAC6 protein levels) and cells are unable to proliferate. Tumor growth and wound healing are inhibited in Tm4sf1-heterozygous mice. |
Co-localization immunofluorescence, protein co-recruitment assays to TMEDs, siRNA knockdown, microtubule acetylation Western blot, Tm4sf1-heterozygous mouse in vivo models |
Journal of cell communication and signaling |
High |
38946725
|
| 2024 |
TM4SF1 enhances the interaction between AKT1 and PDPK1 (as shown by co-immunoprecipitation, bimolecular fluorescence complementation, and immunofluorescence), promoting AKT phosphorylation, which subsequently downregulates p16 and p21, suppressing tumor cell senescence. TM4SF1-mediated AKT phosphorylation also enhances PD-L1 expression and reduces MHC class I levels on tumor cells, impairing CD8+ T cell cytotoxic function. |
Immunoprecipitation-mass spectrometry, co-immunoprecipitation, bimolecular fluorescence complementation, immunofluorescence, flow cytometry, SA-β-gal activity assay, Western blot, hydrodynamic tail vein injection mouse model |
Clinical and molecular hepatology |
High |
39736265
|
| 2024 |
PLAU physically interacts with TM4SF1 to promote Akt signaling activation in non-small cell lung cancer; TM4SF1 knockdown or treatment with anti-TM4SF1 neutralizing antibody inhibited PLAU-induced growth, survival, and cisplatin resistance, placing TM4SF1 as a required mediator of PLAU-driven Akt activation. |
Co-immunoprecipitation (PLAU-TM4SF1 interaction), siRNA knockdown, plasmid overexpression, neutralizing antibody treatment, in vivo xenograft |
Biology direct |
Medium |
38229120
|
| 2025 |
TM4SF1 in hepatic stellate cells binds to and activates the tyrosine kinase c-Src, promoting HSC activation and hepatic fibrosis via the c-Src/PI3K/AKT pathway; HSC-specific TM4SF1 knockout mice showed reduced HSC activation and attenuated hepatic fibrosis, and the Src family inhibitor saracatinib blocked TM4SF1 overexpression-induced fibrosis. |
Co-immunoprecipitation (TM4SF1-c-Src interaction), HSC-specific knockout mouse model, pharmacological inhibition (saracatinib), overexpression/knockdown in LX-2 cells, Western blotting, in vivo fibrosis models |
Cellular and molecular gastroenterology and hepatology |
High |
40550268
|
| 2025 |
TM4SF1-directed ADC (3m2A7A-LP2) specifically homed to and disrupted newly formed VEGF-A164-induced angiogenic blood vessels within 48 hours in a mouse ear model, without affecting normal vessels in the same animal, demonstrating that TM4SF1 is selectively expressed on and internalized by newly forming tumor blood vessels. |
Adenoviral VEGF-A164 ear model in nude mice, in vivo ADC targeting/homing assay, histological analysis, multi-dose treatment |
International journal of molecular sciences |
Medium |
42196417
|
| 2024 |
YBX1, an RNA-binding protein, stabilizes TM4SF1 mRNA via m5C (5-methylcytosine) modification, upregulating TM4SF1 expression and subsequently activating β-catenin/c-Myc signaling to drive bladder cancer proliferation and glycolysis; overexpression of β-catenin reversed the inhibitory effects of TM4SF1 silencing. |
RNA immunoprecipitation (RIP), m5C-RIP, Actinomycin D mRNA stability assay, luciferase reporter assay, siRNA knockdown, overexpression, Western blotting, glycolysis assays |
Combinatorial chemistry & high throughput screening |
Medium |
41029024
|
| 2024 |
TSPAN1 physically interacts with TM4SF1 in glioblastoma stem cells (confirmed by Co-IP and immunofluorescence); the compound 4,5-dimethoxycanthin-6-one inhibited both TM4SF1 and TSPAN1 expression and disrupted this interaction, suppressing glioblastoma stem cell formation and proliferation; TSPAN1 overexpression partially reversed these effects. |
Co-immunoprecipitation, immunofluorescence, molecular docking simulation, CCK-8/colony formation, wound healing, Transwell, flow cytometry, xenograft mouse model |
Neurochemical research |
Medium |
39060768
|
| 2022 |
The lncRNA BCYRN1 recruits the transcription factor BATF to the TM4SF1 promoter, thereby upregulating TM4SF1 expression; ChIP demonstrated BATF binding to the TM4SF1 promoter, and RNA immunoprecipitation confirmed BCYRN1-BATF interaction. Knockdown of BCYRN1 reduced TM4SF1-dependent HCC cell migration, invasion, and xenograft tumor growth. |
RNA immunoprecipitation (RIP), chromatin immunoprecipitation (ChIP), luciferase reporter assay, siRNA knockdown, in vivo xenograft |
Disease markers |
Medium |
35730016
|