| 2003 |
BMPER is a secreted protein that directly interacts with BMP2, BMP4, and BMP6, and antagonizes BMP4-dependent Smad5 activation in endothelial cell precursors. It contains an amino-terminal signal peptide, five cysteine-rich domains, a von Willebrand D domain, and a trypsin inhibitor domain. |
Direct protein binding assays, Smad5 activation assays, Xenopus ventral injection axis duplication assay, embryoid body differentiation assay |
Molecular and cellular biology |
High |
12897139
|
| 2008 |
BMPER is an extracellular matrix protein expressed by endothelial cells and acts as a downstream target of FoxO3a. It promotes endothelial cell sprouting and migration and is necessary for BMP4-induced Smad1/5 phosphorylation and Erk1/2 activation. BMP4 and BMPER are mutually required for their respective activities. |
Western blotting, immunocytochemistry, siRNA knockdown, in vitro sprouting/migration assays, in vivo zebrafish model, Smad1/5 phosphorylation assay |
Circulation research |
High |
18787191
|
| 2009 |
At molar concentrations exceeding BMP4, BMPER switches from a BMP activator to an inhibitor via a novel endocytic trap-and-sink mechanism, leading to lysosomal degradation of both BMPER and BMP4, reducing the duration and magnitude of BMP4-dependent Smad signaling. Noggin and Gremlin, but not Chordin, trigger similar BMP endocytosis. |
Dose-response signaling assays, endocytosis tracking, lysosomal inhibition experiments, Smad reporter assays |
The Journal of cell biology |
High |
19221194
|
| 2007 |
Zebrafish BMPER ortholog (zbmper) is expressed at sites of BMP activity including vascular precursor cells. Knockdown of zbmper results in a dorsalized phenotype, reduced hematopoietic precursors, and vascular patterning defects, establishing a conserved role in vascular and hematopoietic development. |
Morpholino knockdown in zebrafish, in situ hybridization, gata1 marker analysis |
Journal of molecular and cellular cardiology |
High |
17618647
|
| 2009 |
Cv2 (mouse BMPER ortholog) acts as a pro-BMP factor in nephron precursor development through Twisted gastrulation (Tsg). Cv2-null mice show reduced cap condensates and lower pSmad1 levels. The renal defects of Cv2-/- are fully suppressed by Tsg null mutation, placing Cv2 upstream of Tsg in the BMP signaling hierarchy for nephrogenesis. |
Genetic epistasis (double knockout), immunostaining for pSmad1, embryonic kidney cell line assays |
Developmental biology |
High |
19914233
|
| 2011 |
BMPER modulates vascular inflammation by suppressing TNFα-NFκB signaling. BMPER is downregulated by the TNFα-NFκB-KLF2 pathway. Loss of BMPER (siRNA or BMPER+/- mice) induces proinflammatory endothelial phenotype with reduced eNOS and enhanced adhesion molecule expression, increased leukocyte adhesion. The anti-inflammatory effects of BMPER are dependent on BMP signaling through NFκB. |
siRNA knockdown, BMPER+/- mouse model, intravital microscopy, ex vivo and in vivo leukocyte adhesion assays, eNOS/adhesion molecule expression |
Blood |
High |
21900199
|
| 2011 |
BMPER is a negative regulator of hepcidin. Soluble BMPER peptide inhibits BMP2- and BMP6-dependent hepcidin promoter activity and reduces pSMAD1/5/8 levels in hepatocytes. Injection of BMPER peptide into mice reduces liver hepcidin and increases serum iron levels. |
Hepcidin promoter reporter assays in HepG2 and HuH7 cells, primary human hepatocyte treatment, in vivo BMPER peptide injection with iron and hepcidin measurement |
The Journal of biological chemistry |
High |
22144676
|
| 2012 |
Bmper haploinsufficiency in ApoE-/- mice leads to increased atherosclerosis with elevated BMP activity in endothelial cells. siRNA knockdown of Bmper in HUVECs dramatically increases ICAM-1 and VCAM-1 expression at rest and under shear stress, identifying Bmper as a critical regulator of BMP-mediated vascular inflammation. |
ApoE-/-/Bmper+/- mouse model, siRNA knockdown, ICAM-1/VCAM-1 expression, atherosclerotic plaque quantification, shear stress experiments |
Arteriosclerosis, thrombosis, and vascular biology |
High |
22772758
|
| 2012 |
BMPER promotes osteoblast-like differentiation of human coronary artery smooth muscle cells (HCASMCs) by antagonizing BMP-2-induced Smad1/5/8 phosphorylation and by increasing IκBα phosphorylation and NF-κB activity. NF-κB decoy oligonucleotides impair BMPER-induced osteoblast-like differentiation. |
RNA interference, recombinant BMPER treatment, Smad1/5/8 phosphorylation assay, NF-κB reporter, alkaline phosphatase and mineralization assays |
The Journal of biological chemistry |
High |
22778264
|
| 2013 |
BMPER-regulated BMP signaling is critical for coronary plexus remodeling. BMPER-/- embryos show atretic coronary arteries or distal connections. BMPER directly binds BMP2 and blocks BMP2-induced Smad activation in a dose-dependent manner. BMPER inhibits BMP2-induced Sox9 increase during endocardial cushion EMT. |
BMPER-/- mouse embryo analysis, in vitro tubulogenesis, migration assay, pulldown/binding assay, Smad activation quantification, Sox9 immunostaining |
Developmental biology |
High |
24373957
|
| 2013 |
BMPER and Tsg cooperate in BMP pathway modulation to control endothelial cell angiogenesis. Both proteins show concentration-dependent proangiogenic activity via Akt, Erk, and Smad signaling. BMPER and Tsg interfere with each other to enhance proangiogenic events; in vivo, both are required for normal zebrafish vascular development. |
Matrigel assay, HUVEC sprouting/migration/proliferation, siRNA knockdown, Akt/Erk/Smad signaling assays, zebrafish morpholino knockdown |
Journal of cell science |
High |
23641068
|
| 2014 |
BMPER promotes angiogenesis in endothelial cells by upregulating bFGF/FGF-2 expression and FGF receptor-1 expression and phosphorylation, and downregulating thrombospondin-1. The proangiogenic effect of BMPER is blocked by an anti-bFGF antibody. In Bmper+/- mice, aortic ring assays confirm a specific effect for bFGF but not VEGF. |
Angiogenesis antibody array, siRNA knockdown, anti-bFGF neutralizing antibody, Matrigel/spheroid/migration assays, in vivo Matrigel plug assay, aortic ring assay |
Arteriosclerosis, thrombosis, and vascular biology |
High |
25503991
|
| 2009 |
KLF15 directly activates BMPER expression by binding to a KLF-binding element at -284 bp within the BMPER promoter. Sp1 antagonizes KLF15-induced BMPER promoter activation. Endothelin-1 downregulates BMPER expression via the ETB receptor by suppressing KLF15. |
BMPER promoter deletion analysis, gelshift/EMSA assays, KLF15 overexpression and siRNA knockdown, promoter reporter assays, ET-receptor antagonist (BQ788) |
Cardiovascular research |
High |
19767294
|
| 2009 |
Statins upregulate BMPER expression in endothelial cells mainly through a posttranscriptional mechanism (prolonged RNA half-life) via the RhoA/ROCK/actin pathway. BMPER upregulation by mevastatin is prevented by RhoA activators and enhanced by RhoA/ROCK/actin inhibitors. Increasing BMPER concentrations downregulate ICAM-1 expression and have anti-inflammatory effects. |
Actinomycin D chase analysis, BMPER promoter reporter assays, RhoA pathway activators/inhibitors (C3-toxin, RhoAN19, fasudil, cytochalasin D), RT-PCR, Western blotting, ICAM-1 expression assay |
Arteriosclerosis, thrombosis, and vascular biology |
High |
20042706
|
| 2017 |
BMPER is a novel positive regulator of HSC maturation in the AGM region. BMPER is associated with BMP signaling inhibition but is transcriptionally induced by BMP4, suggesting BMPER contributes to the precise control of BMP activity enabling HSC maturation in a BMP-negative environment. |
RNA sequencing of AGM spatiotemporal transitions, ex vivo reaggregate culture system, BMP4 stimulation, HSC maturation assay |
The Journal of experimental medicine |
Medium |
29093060
|
| 2017 |
BMPER activates nuclear factor of activated T cells c1 (NFATc1) in endothelial cells through multiple BMP-independent signaling pathways: LRP1-ERK activation, calcineurin signaling, and LRP1β-mediated NF45 nuclear export. BMPER-induced NFATc1 activation is required for lipopolysaccharide-induced vascular inflammation. |
BMPER+/- mouse LPS challenge, survival assay, cytokine measurement, NFATc1 reporter assays, LRP1 interaction studies, calcineurin inhibition, NF45 nuclear export assay |
Arteriosclerosis, thrombosis, and vascular biology |
High |
28596374
|
| 2017 |
BMPER regulates endothelial barrier function by maintaining VE-cadherin expression. BMPER knockdown reduces VE-cadherin and impairs endothelial barrier through enhanced BMP4-Smad-Id1 signaling. High levels of BMPER antagonize BMP4-Smad5-Id1 signaling and prevent VE-cadherin downregulation and endothelial leakage in vivo. |
BMPER+/- mouse Evans blue dye leakage, siRNA knockdown, FITC-dextran transwell permeability assay, VE-cadherin expression analysis, Smad-Id1 signaling assay |
Inflammation |
High |
27995357
|
| 2015 |
BMPER promotes epithelial-mesenchymal transition (EMT) during cardiac cushion development by modulating BMP2-induced Smad and Sox9 activity. BMPER directly binds BMP2 and dose-dependently blocks BMP2-induced Smad activation. In BMPER-/- embryos, canonical BMP pathway is more active in AV cushions during EMT, resulting in increased Sox9-positive cells. |
BMPER-/- embryo histology, direct BMP2 binding assay, Smad activation quantification, Sox9 immunostaining, in vitro endothelial cell BMP2/BMPER co-treatment |
PloS one |
High |
26418455
|
| 2018 |
BMPER and TWSG1 activate arteriovenous specification in zebrafish endothelial cells by stimulating Notch signaling targets (HEY1/2, EPHRINB2). Silencing of bmper and twsg1b in zebrafish results in enhanced venous marker expression and dysregulated arterial marker expression. BMP receptor antagonist DMH1 abolishes BMPER and BMP4-induced Notch signaling. |
Zebrafish morpholino knockdown, in situ hybridization for arteriovenous markers, qRT-PCR, Western blot for Notch targets, DMH1 BMP receptor antagonism |
The FEBS journal |
High |
29473997
|
| 2018 |
BMPER binds Tsg through its N-terminal BMP-binding region; this N-terminal fragment alone inhibits BMP-4 signaling more potently than full-length BMPER. BMPER and Tsg cooperatively inhibit BMP-4 signaling. Full-length BMPER is targeted to the plasma membrane via C-terminal heparan sulphate proteoglycan binding, while an active cleavage fragment is diffusible. A disease-causing P370L mutation prevents intracellular cleavage. |
Pulldown/binding assay, BMP-4 signaling reporter assays, SAXS and electron microscopy structural analysis, heparan sulphate proteoglycan binding assay, P370L mutant analysis, intracellular cleavage assay |
Matrix biology |
High |
30125619
|
| 2011 |
BMPER promotes tumor growth and angiogenesis in lung carcinoma cells; its loss impairs proliferation, migration, invasion, and tumor cell-induced endothelial sprout formation. BMPER effects are transduced via regulation of Id1 (BMP target transcription factor) and MMP-9 and MMP-2. |
siRNA knockdown in A549 cells, proliferation/migration/invasion assays, in vivo Lewis lung carcinoma mouse model, Id1 and MMP expression analysis |
Oncogene |
Medium |
22020334
|
| 2021 |
BMPER alleviates ischemic brain injury by activating the Smad3/Akt/Nrf2 pathway in neurons. BMPER administration reduces infarct size, brain edema, neuroinflammation, and cell death after MCAO. In OGD/R-challenged neurons, BMPER activates Smad3/Akt/Nrf2 signaling. |
MCAO mouse model, primary neuron OGD/R in vitro model, Western blotting for Smad3/Akt/Nrf2, immunohistochemistry, infarct measurement |
CNS neuroscience & therapeutics |
Medium |
34904361
|
| 2021 |
BMPER inhibits TGF-β1-induced tubular dedifferentiation and fibroblast activation. Exogenous BMPER inhibits Id-1 upregulation, prevents E-cadherin loss, and suppresses fibroblast activation by inhibiting Erk1/2 phosphorylation. This Erk1/2 inhibition is abolished by LRP1 knockdown, identifying LRP1 as the BMPER receptor mediating this effect. |
siRNA knockdown, exogenous BMPER treatment, Erk1/2 phosphorylation assay, LRP1 knockdown, UUO mouse model with BMPER gene delivery |
Frontiers in cell and developmental biology |
Medium |
33644047
|
| 2024 |
High fluid shear stress (FSS) suppresses Smad1/5 by elevating KLF2, which induces BMPER, thereby de-inhibiting Akt to facilitate outward vascular remodeling. Endothelial BMPER deletion impairs blood flow recovery and vascular remodeling in mice. This establishes the KLF2-BMPER-Smad1/5 axis as a mechanosensitive checkpoint. |
Surgical high FSS mouse model, endothelial-specific BMPER deletion, KLF2/BMPER/Smad1/5/Akt pathway analysis, diabetic mouse models with BMP9/10 blocking antibodies |
Nature cardiovascular research |
High |
39196179
|
| 2023 |
BMPER is required for adipogenesis in 3T3-L1 preadipocytes and mouse adipose progenitor cells; BMPER expression and release peak at day 4 post-differentiation. BMPER is a conserved marker of adipose progenitor cells and adipocytes in visceral adipose tissue. |
siRNA knockdown in 3T3-L1 preadipocytes, mouse APC differentiation assays, lentiviral KD, single-cell/single-nucleus RNA-seq |
Communications biology |
Medium |
37311809
|
| 2023 |
BMPER stimulation of vascular smooth muscle cells (vSMCs) promotes a contractile phenotype; BMPER silencing increases proliferation, migration, and reduces contractibility. BMPER binds IGFBP4, modulating IGF signaling. Perivascular BMPER application prevents neointima formation in a mouse carotid ligation model. |
siRNA knockdown and recombinant BMPER treatment of primary vSMCs, Bmper+/- mouse carotid ligation model, IGFBP4 binding assay, contractility/proliferation/migration assays |
International journal of molecular sciences |
Medium |
36902380
|
| 2025 |
Endothelial BMPER promotes pulmonary arterial hypertension by activating YAP in pulmonary artery smooth muscle cells through releasing YAP from sequestration by LRP1 at the cell membrane. Endothelial-specific BMPER overexpression causes spontaneous PH; BMPER depletion attenuates pulmonary vascular remodeling via LRP1-YAP mechanism. |
Global and endothelial cell-specific BMPER knockout mice, AAV-assisted BMPER overexpression, hypoxia-induced PH model, LRP1 co-depletion epistasis, YAP activation assays, right ventricular pressure measurement |
Arteriosclerosis, thrombosis, and vascular biology |
High |
40964716
|
| 2024 |
SUGP2 knockdown causes abnormal alternative splicing of CIRBP pre-mRNA, increasing CIRBP V1, which increases BMPER mRNA stability and translation. Elevated BMPER then downregulates pSMAD1/5 and hepcidin (HAMP), establishing a SUGP2/CIRBP/BMPER/SMAD/hepcidin axis in hemochromatosis. |
RNA-seq, RNA-protein pull-down, RNA immunoprecipitation, SUGP2 p.Arg622Gln CRISPR knock-in mice, Western blot for pSMAD1/5 and hepcidin, BMPER mRNA stability assay |
American journal of hematology |
Medium |
38800953
|
| 2025 |
NSUN6 stabilizes BMPER expression in an m5C-dependent manner in hepatocellular carcinoma. BMPER knockdown reverses the tumor-suppressive effects of NSUN6 overexpression, establishing NSUN6 as an upstream regulator of BMPER through mRNA methylation-dependent stability. |
MeRIP-seq, actinomycin-D mRNA stability assay, luciferase reporter, NSUN6 overexpression in HCC cells and PDX mouse model, BMPER rescue experiment |
Biology of the cell |
Medium |
40589169
|
| 2015 |
BMPER expression in lung fibroblasts is regulated by DNA methylation; demethylation with 5'-azacytidine decreases BMPER expression and attenuates fibroblast invasion/migration. siRNA-mediated BMPER reduction impairs fibroblast migration and invasion in IPF fibroblasts. |
5'-azacytidine demethylation treatment, siRNA knockdown, invasion/migration assays, in vivo mouse fibrosis model |
Scientific reports |
Medium |
26442443
|