| 2011 |
VEGF binding to NRP1 requires residues Y297 and D320 in the b1 domain; mutations at these sites abolish high-affinity VEGF binding, disrupt NRP1-VEGFR2 (KDR) complex formation, reduce FAK Tyr407 phosphorylation, and impair endothelial cell migration and angiogenesis. NRP1 non-binding mutants can act dominantly negative by heterodimerizing with wild-type NRP1 and NRP2. |
Site-directed mutagenesis, VEGF binding assays, co-immunoprecipitation, phosphorylation assays, migration assays, coculture angiogenesis model, overexpression in HUVECs |
Molecular biology of the cell |
High |
21653826
|
| 2014 |
NRP1 promotes brain angiogenesis cell-autonomously in endothelium and specifically in tip cells. Endothelial NRP1-expressing cells preferentially attain the tip cell position over NRP1-negative cells in chimeric vessel sprouts. Neural progenitor- and macrophage-derived NRP1 are dispensable for this process. |
Conditional endothelial-specific Nrp1 knockout, genetic mosaic analysis in chimeric mice, in vivo brain vessel imaging |
Blood |
High |
23315162
|
| 2015 |
NRP1 suppresses the stalk-cell phenotype during sprouting angiogenesis by limiting Smad2/3 activation through ALK1 and ALK5 (TGF-β/BMP receptors). Notch signaling downregulates NRP1, thereby relieving ALK1/ALK5 inhibition and driving stalk-cell behavior. NRP1 levels act as the pivot for endothelial cell heterogeneity in the Dll4/Notch lateral feedback loop. |
Genetic epistasis in zebrafish and mouse, endothelial-specific NRP1 knockout, Smad2/3 phosphorylation assays, ALK inhibitor experiments |
Nature communications |
High |
26081042
|
| 2014 |
NRP1 presented in trans (on a different cell than VEGFR2) arrests VEGFR2 endocytosis, prolonging phosphorylation of PLCγ and ERK2 while reducing ERK1 phosphorylation, and suppresses tumor initiation and vascularization. In cis, VEGF induces rapid VEGFR2/NRP1 complex formation and co-internalization. The trans effect requires high-affinity VEGF binding and the NRP1 C-terminal domain. |
Co-culture cis/trans cell systems, VEGFR2 internalization assays, phosphorylation time courses, NRP1 domain-deletion constructs, mouse fibrosarcoma/melanoma tumor models |
Developmental cell |
High |
24656741
|
| 2017 |
VEGF165-induced vascular permeability requires both VEGFR2 and NRP1, specifically the VEGF164-binding site of NRP1 and the NRP1 cytoplasmic domain (NCD). The NCD promotes ABL kinase activation within the receptor complex, which in turn activates VEGFR2-recruited SRC family kinases (SFKs). GIPC1, a known NCD interactor, is not required for this permeability response. |
In vivo vascular leakage assays (Miles assay), NRP1 cytoplasmic domain knock-in mice, ABL and SFK kinase assays, tissue culture signaling experiments, choroidal neovascularization mouse model |
The Journal of experimental medicine |
High |
28289053
|
| 2007 |
SEMA3A is required for axon patterning of limb nerves but not for angiogenesis; VEGF164 (not SEMA3A) controls NRP1-dependent angiogenesis in vivo. There is no genetic interaction between SEMA3A and VEGF164 during vasculogenesis, angiogenesis, or limb axon patterning, arguing against ligand competition at NRP1 controlling neurovascular congruence. |
Mouse knockouts of Sema3a and Vegf isoforms, genetic interaction analysis, in vivo axon and vessel patterning assays |
Development (Cambridge, England) |
High |
17428830
|
| 2011 |
NRP1 (via an autocrine VEGF loop) promotes cancer stem cell (CSC) stemness and symmetric division in skin papillomas. Conditional deletion of Nrp1 in tumor epithelial cells blocks VEGF's ability to promote cancer stemness and renewal. NRP1 deletion in normal epidermis also prevents skin tumor initiation. |
Conditional Nrp1 knockout in tumor epithelial cells (mouse model), CSC functional assays (symmetric division, self-renewal), VEGFR2 blockade, VEGF overexpression/deletion |
Nature |
High |
22012397
|
| 2018 |
VEGF upregulates NRP1 proteolytic cleavage via ADAM9 and ADAM10 metalloproteinases, generating C-terminal NRP1 fragments (lacking ligand-binding A and B regions) that inhibit VEGF-induced VEGFR2 phosphorylation, endothelial cell motility, and angiogenesis. |
siRNA knockdown of ADAM9/10, pharmacological ADAM10 inhibitor, adenoviral overexpression of NRP1 C-terminal constructs, VEGFR2 phosphorylation assays, aortic ring sprouting assay, coculture angiogenesis model |
Arteriosclerosis, thrombosis, and vascular biology |
High |
29880492
|
| 2015 |
VEGF-A/NRP1 signaling induces formation of a GIPC1-Syx complex that activates RhoA, leading to degradation of the CDK inhibitor p27 and cancer cell proliferation. The NRP1 cytoplasmic domain is required for this effect. RhoA/ROCK inhibition blocks VEGF-A-induced proliferation. |
Co-immunoprecipitation (GIPC1-NRP1, GIPC1-Syx), RhoA activity assays, shRNA knockdown, NRP1 cytoplasmic deletion mutants, C3 exoenzyme/Y27632 inhibition, p27 western blot, proliferation assays |
Biology open |
Medium |
26209534
|
| 2018 |
NRP-1 forms a complex with GIPC1 and α6/β4-integrin to activate FAK/Src signaling, which stabilizes a YAP1/ΔNp63α complex to enhance epidermal cancer stem cell survival, invasion, and angiogenesis. Loss of NRP-1 reduces tumor vascularization and tumor growth. |
Co-immunoprecipitation (NRP1-GIPC1-integrin), FAK/Src kinase assays, YAP1/ΔNp63α western blot, NRP-1 knockout xenograft model, constitutively active YAP1/ΔNp63α rescue |
Oncogene |
Medium |
29755126
|
| 2018 |
NRP-1/GIPC1/Syx complex activates RhoA-dependent p38 MAPK signaling to enhance epidermal cancer stem cell spheroid formation, invasion, migration, and angiogenic potential. Pharmacological inhibition of VEGF-A/NRP-1 interaction or RhoA reduces p38 activity and tumor growth. |
Co-immunoprecipitation, RhoA/p38 kinase assays, NRP1 knockout cells, constitutively active RhoA/p38 rescue, tumor growth assays |
Molecular carcinogenesis |
Medium |
30456845
|
| 2012 |
SEMA3A signaling through NRP1 has multiple cell-autonomous roles in sympathetic nervous system development, including neuronal cell body positioning, aggregation, and axon guidance during sympathetic chain assembly and heart/aorta innervation. Loss of NRP1 in the sympathetic lineage causes sinus bradycardia, similar to Sema3a-null mice. |
Lineage-specific conditional Nrp1 knockout (sympathetic vs. vascular), Sema3a and NRP1/NRP2 compound mutant mice, cardiac function assessment |
Developmental biology |
High |
22790009
|
| 2014 |
VEGF189 can bind NRP1 and promote NRP1-dependent neuronal migration, survival, and axon guidance responses, demonstrating that VEGF189 (in addition to VEGF165) is a biologically active NRP1 ligand in the nervous system. |
In situ ligand-binding assays, NRP1 mutant mice, in vitro neuronal migration and survival assays, VEGF isoform knock-in mouse models |
Development (Cambridge, England) |
Medium |
25519242
|
| 2020 |
Reelin's C-terminal region (CTR) binds NRP1, which forms a complex with VLDLR (a canonical Reelin receptor) in superficial neocortical layers. NRP1 acts as a co-receptor for VLDLR, augments Reelin signaling (reducing Dab1 accumulation), and is required for normal dendritic development in superficial-layer neurons. Proteolytic removal of the 6 C-terminal Reelin residues abolishes NRP1 binding. |
Co-immunoprecipitation (NRP1-VLDLR), in utero electroporation NRP1 knockdown, Dab1 accumulation assays, dendritic morphology analysis, binding studies with Reelin CTR mutants |
The Journal of neuroscience |
High |
33009002
|
| 2021 |
CMT2N-causing mutations in the aminoacylation domain of AlaRS (including R329H) cause structural loosening of the domain and enable aberrant interaction with the b1b2 domains of NRP1. Wild-type AlaRS does not interact with NRP1. The aberrant AlaRS-NRP1 interaction is confirmed in patient samples. |
X-ray crystallography, SAXS, hydrogen-deuterium exchange, switchSENSE hydrodynamic measurements, protease digestion, co-immunoprecipitation in patient samples, in vitro binding assays |
Proceedings of the National Academy of Sciences of the United States of America |
High |
33753480
|
| 2016 |
In endothelium, VEGF requires NRP-1 to inhibit LPS-dependent dendritic cell maturation. NRP-1-deficient BMDCs are completely insensitive to VEGF-mediated suppression of LPS-induced maturation. Mechanistically, NRP-1 directly interacts with TLR4 in the presence of VEGF and suppresses downstream ERK and NF-κB signaling, resulting in inhibition of MHC II, CD40, CD86 expression, and proinflammatory cytokine production. |
Conditional NRP-1 knockout BMDCs, co-immunoprecipitation (NRP1-TLR4), ERK/NF-κB phosphorylation assays, flow cytometry for surface markers, cytokine ELISAs |
Journal of immunology |
Medium |
27815442
|
| 2020 |
Conditional deletion of Nrp1 in epidermal keratinocytes inhibits psoriasis mediated by Vegfa overexpression or c-Jun/JunB deletion, demonstrating an epidermal cell-autonomous function of Vegfa/Nrp1/Flt1. Anti-Nrp1 antibody treatment reverses the psoriasis phenotype. Fosl1 was identified as a key downstream transcription factor in the Vegfa/Nrp1 regulatory network. |
Conditional keratinocyte-specific Nrp1 knockout mice, psoriasis mouse models, anti-Nrp1 antibody treatment, transcriptional and chromatin profiling (ATAC-seq/RNA-seq) |
Science advances |
High |
31934626
|
| 2023 |
NRP1 interacts with EGFR via its b1/b2 domain (extracellular interaction), leading to EGFR phosphorylation and activation of the AKT signaling pathway to promote prostate cancer cell proliferation and migration. HIF1α binds the NRP1 promoter and regulates its transcriptional activation. |
Co-immunoprecipitation (NRP1-EGFR), domain deletion constructs, AKT/EGFR phosphorylation western blot, ChIP assay (HIF1α-NRP1 promoter), siRNA knockdown, NRP1 inhibitor (EG01377) treatment, xenograft model |
Cell death & disease |
Medium |
36841806
|
| 2023 |
USP9X is a deubiquitinating enzyme that stabilizes NRP1 protein. USP9X-mediated NRP1 deubiquitination enhances hepatic stellate cell (HSC) activation, promoting TGF-β1, VEGFA, and PDGF-BB-mediated liver fibrosis. |
Co-immunoprecipitation, GST pull-down, in vitro and in vivo ubiquitination assays, USP9X knockdown/overexpression, mouse CCl4 liver fibrosis model, immunohistochemistry |
Cell death & disease |
Medium |
36653359
|
| 2024 |
NRP1 forms stable complexes with endoglin (ENG) and VEGFR2 at the endothelial cell surface; VEGF-A enhances these interactions. ENG augments NRP1/VEGFR2 interactions, suggesting tripartite complex formation bridged by ENG. Optimal VEGF-A-mediated VEGFR2 and Erk1/2 phosphorylation and sprouting require both ENG and NRP1. |
FRAP-based IgG-mediated immobilization co-mobility assay, overexpression/knockdown of ENG and NRP1 in murine embryonic endothelial cells (MEEC+/+ and MEEC-/-), VEGFR2/Erk1/2 phosphorylation assays, sprouting assays, MEK1/2 inhibitor |
Communications biology |
Medium |
38242992
|
| 2018 |
NRP1 and VEGFR2 undergo homo- and hetero-interactions in the plasma membrane. NRP1 self-associates (homo-interactions) and interacts with VEGFR2 in the absence of ligand; these interactions are modulated by VEGFA. |
Quantitative FRET in plasma membrane, VEGFA ligand addition/removal experiments |
Biochimica et biophysica acta. Biomembranes |
Medium |
29630862
|
| 2019 |
Sema3a-Nrp1 signaling confers fast-twitch myofiber specificity to Twist2+ muscle progenitors. Sema3a is expressed by slow/intermediate myofibers (type I/IIa) but not IIb fibers, acting as a chemorepellent that restricts Tw2+/Nrp1+ progenitors to fuse with type IIb fibers. |
RNA sequencing, immunofluorescence, stripe migration assays, chimeric cell-cell fusion assays, Sema3a transgenic mouse model |
Developmental cell |
High |
31474563
|
| 2021 |
MAOA activates SEMA3C in a Twist1-dependent transcriptional manner; SEMA3C then stimulates cMET via autocrine/paracrine interaction with co-activated PlexinA2 and NRP1, facilitating prostate cancer perineural invasion. |
In vitro PNI assays, orthotopic xenograft model, MAOA inhibitor treatment, SEMA3C/NRP1/PlexinA2 knockdown, cMET phosphorylation assays |
Oncogene |
Medium |
33420365
|
| 2015 |
Wedelolactone promotes formation of a Sema3A-PlexinA1-NRP1 complex on BMSCs, activating β-catenin nuclear accumulation and osteoblastogenesis. In osteoclastic cells, it induces PlexinA1-NRP1 complex formation while sequestering PlexinA1-DAP12 complex and suppressing PLCγ2 phosphorylation, inhibiting osteoclastogenesis. |
Co-immunoprecipitation (Sema3A-NRP1-PlexinA1), co-immunoprecipitation (PlexinA1-DAP12), β-catenin nuclear localization immunofluorescence, PLCγ2 phosphorylation western blot, ALP/TRAP activity assays, Sema3A antibody blocking |
Frontiers in pharmacology |
Medium |
27803667
|
| 2015 |
NRP1 co-localizes with DDR2 at the plasma membrane of differentiating osteoblasts, prolongs DDR2 protein half-life (stabilizes DDR2), and enhances DDR2-induced ERK1/2 and Runx2 phosphorylation to stimulate osteoblast differentiation. NRP1 does not alter DDR2 mRNA transcription. |
Co-localization immunofluorescence, co-immunoprecipitation (NRP1-DDR2), half-life determination assay, ERK1/2/Runx2 phosphorylation western blot, ALP activity and OCN secretion assays, NRP1 overexpression/siRNA knockdown |
Cellular physiology and biochemistry |
Medium |
25924845
|
| 2024 |
NRP1 functions as an entry receptor for mammalian orthoreovirus (reovirus), binding with nanomolar affinity through multivalent interactions involving outer-capsid protein σ3 and capsid turret protein λ2 engaging multiple NRP1 extracellular domains. NRP1 contributes to reovirus dissemination and neurovirulence in mice. |
Receptor identification assays, nanomolar affinity binding measurements, gene-segment exchange capsid mutants, NRP1-binding-deficient capsid mutants, in vivo mouse dissemination and neurovirulence assays |
Cell host & microbe |
High |
38729153
|
| 2023 |
NRP1 binds YAP (co-immunoprecipitation), and mechanical compression disrupts this binding, releasing YAP to translocate to the nucleus. NRP1 knockdown promotes LATS1 expression and reduces YAP, inhibiting endothelial cell proliferation. NRP1 thus transduces mechanical stress inhibition via the LATS1/YAP axis in hypertrophic scars. |
Co-immunoprecipitation (NRP1-YAP), NRP1 knockdown, LATS1/pYAP western blot, mechanical compression culture model, rat tail-scar model, bioinformatics screening |
Cell death discovery |
Medium |
37704618
|
| 2018 |
RNA-binding protein Lin28B directly binds the NRP-1 3'UTR (confirmed by RIP), increasing NRP-1 mRNA stability and expression, which in turn activates Wnt/β-catenin signaling to promote gastric cancer cell stemness. |
RNA immunoprecipitation (RIP), luciferase reporter assay, mRNA stability assay, Lin28B overexpression/knockdown, Wnt/β-catenin signaling western blot, spheroid formation assays |
Biomedicine & pharmacotherapy |
Medium |
29787985
|
| 2021 |
NRP1 promotes IL-17A production by intestinal ILC3s in an NF-κB signaling-dependent and cell-intrinsic manner. Genetic NRP1 deficiency reduces ILC3 frequency in the gut and impairs IL-17A production, altering microbiota composition and improving DSS-induced colitis outcomes. |
NRP1 conditional knockout mice, ILC3 frequency/IL-17A production assays, NF-κB signaling analysis, DSS colitis model, pharmacological NRP1 inhibition (EG00229) |
Cellular & molecular immunology |
Medium |
39741194
|
| 2021 |
Myeloma-secreted galectin-1 potently interacts with CD304 (NRP1) on monocytic MDSCs, expanding the M-MDSC population and increasing CD304 expression. Blockade of CD304 reduces MDSC migration and reverses MDSC-mediated suppression of melphalan cytotoxicity. |
High-throughput flow cytometry screening, galectin-1 in vitro treatment of MDSCs, CD304/NRP1 blockade assays, co-culture with myeloma cell lines (high/low galectin-1), cytotoxicity assays |
Cancer immunology research |
Medium |
33771821
|
| 2024 |
VEGFR1, VEGFR2, and NRP1 show distinct trafficking dynamics in HUVECs: VEGFR1 has faster internalization and recycling rates than VEGFR2, whereas NRP1 is predominantly retained at the cell surface (high surface fraction). These differences in subcellular localization influence VEGF ligand sensing and receptor complex composition. |
Quantitative trafficking experiments (receptor internalization and recycling rates measured simultaneously for all three receptors on HUVECs), computational modeling |
PLoS computational biology |
Medium |
38324585
|
| 2024 |
Dnmt3a1 regulates hippocampus-dependent memory via Nrp1 as a downstream target. Dnmt3a1 activity is required for Nrp1 expression in hippocampal neurons, and Nrp1 is required for long-term spatial and contextual memory. NRP1 overexpression does not rescue memory impairments from Dnmt3a2 reduction, indicating isoform-specific regulation. |
Dnmt3a1-specific knockout mice, RNA sequencing, Nrp1 knockdown and overexpression in hippocampus, behavioral memory tests (spatial object recognition, contextual fear memory), rescue experiments |
Neuropsychopharmacology |
Medium |
38499720
|
| 2024 |
YAP/TEAD4 binding to the NRP1 promoter is induced by ionizing radiation in NSCLC cells, transcriptionally upregulating NRP1 expression and conferring radioresistance. NRP1 is identified as a direct transcriptional target of the YAP/TEAD4 complex. |
ChIP assay (TEAD4-NRP1 promoter), YAP dephosphorylation analysis, YAP/TEAD4 inhibition, NRP1 expression rescue experiments, radiation-resistant A549/H1299 cell models |
Cell death & disease |
Medium |
39187525
|
| 2018 |
CMTM6 physically interacts with NRP1 (co-immunoprecipitation) in oral squamous cell carcinoma cells. NRP1 is required for CMTM6-driven tumorigenesis: NRP1 silencing abrogates CMTM6-induced oncogenic effects, and NRP1 depletion destabilizes CMTM6 protein, suggesting NRP1 protects CMTM6 from degradation. |
Co-immunoprecipitation (CMTM6-NRP1), gain/loss-of-function experiments, CMTM6 protein stability assay in NRP1-silenced cells |
American journal of cancer research |
Low |
32642284
|
| 2019 |
NRP1 knockdown in neuroblastoma SK-N-AS cells increases β1 integrin expression and promotes migration and invasion, indicating NRP1 exerts tumor-suppressive effects in neuroblastoma via regulation of β1 integrin levels. |
NRP1 siRNA knockdown, wound-healing assay, Matrigel invasion assay, β1 integrin western blot, β1 integrin siRNA knockdown |
International journal of oncology |
Low |
29750423
|
| 2020 |
NRP1 contributes to cancer stem cell stemness and radioresistance in breast cancer through downregulation of Bcl-2 via the m6A methyltransferase WTAP in an m6A-dependent manner. |
NRP1 siRNA/plasmid transfection, WTAP m6A methylation assay, Bcl-2 western blot, γH2AX immunofluorescence, flow cytometry apoptosis, shRNA-NRP1 xenograft model with radiotherapy |
Apoptosis |
Low |
36333630
|