| 2002 |
BMPR1A (ALK3) is identified as the type I receptor required for AMH/MIS-induced Müllerian duct regression in male sexual development; targeted disruption of Bmpr1a in Müllerian duct mesenchymal cells causes retention of oviducts and uteri in males, demonstrating BMPR1A mediates AMH signaling in vivo. |
Conditional knockout (Cre/lox), genetic epistasis |
Nature genetics |
High |
12368913
|
| 2002 |
Cardiac myocyte-specific deletion of ALK3/BMPR1A causes defects in trabeculae, compact myocardium, interventricular septum, and endocardial cushion; ALK3 is specifically required for TGFβ2 expression in cardiac muscle, identifying a paracrine signaling axis for cushion morphogenesis. |
Conditional knockout (Cre/lox), immunohistochemistry, gene expression analysis |
Proceedings of the National Academy of Sciences of the United States of America |
High |
11854453
|
| 2003 |
BMP4 signals through ALK3/BMPR1A and SMAD5 in spermatogonia; BMP4 stimulation induces Smad4/5 nuclear translocation and formation of a DNA-binding complex with p300/CBP, and exerts mitogenic and differentiative effects including induction of Kit expression in undifferentiated spermatogonia. |
Cell culture, nuclear translocation assay, [3H]thymidine incorporation, RT-PCR |
Journal of cell science |
Medium |
12857787
|
| 2003 |
Constitutively active ALK3 receptor promotes formation of β-catenin/SMAD1/SMAD4 molecular complexes in kidney tissue, and functional cooperativity between ALK3 and β-catenin-dependent signaling pathways was demonstrated in vivo using ALK3(QD) transgenic mice. |
Transgenic mouse model, Co-immunoprecipitation, β-catenin reporter assay |
Development (Cambridge, England) |
Medium |
12736218
|
| 2003 |
Co-expression of BMP type II receptor (BMPR2) influences aggregation and distribution of ALK3/BMPR1A at the cell surface; BMP-2 stimulation rearranges receptor complexes, and kinase activity of BMPR2 is required for this rearrangement and for activation of the SMAD pathway downstream of ALK3. |
Image correlation spectroscopy, constitutively active and kinase-dead receptor constructs, cell surface receptor distribution analysis |
Journal of cell science |
Medium |
12829744
|
| 2004 |
Epithelial BMPR1A is required for hair follicle differentiation and cycling; conditional knockout causes failure of hair shaft and inner root sheath differentiation with loss of Msx1, Msx2, Foxn1, and Gata3 expression; nuclear β-catenin is absent in mutant follicles, placing WNT pathway activation downstream of BMPR1A signaling. |
Conditional knockout (Cre/lox), gene expression analysis, β-catenin localization |
Development (Cambridge, England) |
High |
15084466 15102710
|
| 2000 |
Constitutively active ALK3/BMPR1A (ALK-3) phosphorylates Smad8 and induces its interaction with Smad4, nuclear translocation of Smad8, and cooperative transcriptional activation of BMP-responsive promoter Xvent2; ALK-5 (TGFβ type I receptor) does not activate Smad8, demonstrating specificity. |
In vitro transfection, co-immunoprecipitation, reporter assay, dominant-negative constructs |
Biochemical and biophysical research communications |
Medium |
10814522
|
| 2005 |
BMPR1A and BMPR1B are functionally redundant during early chondrogenesis; double conditional knockout mice develop severe chondrodysplasia with absence of Sox9, L-Sox5, and Sox6 expression in precartilaginous condensations, increased apoptosis, and decreased proliferation, placing BMP signaling through these receptors upstream of Sox transcription factors. |
Double conditional knockout (Cre/lox), gene expression analysis, histology |
Proceedings of the National Academy of Sciences of the United States of America |
High |
15781876
|
| 2005 |
ALK3/BMPR1A in AV canal myocardium is required for development of AV valves and annulus fibrosus; lineage analysis showed AV canal myocytes contribute to specific leaflets, and deletion of Alk3 in these cells causes defects in the same leaflets and disrupted annulus fibrosus leading to ventricular pre-excitation. |
Conditional knockout (Cre/lox), lineage tracing, ECG analysis |
Circulation research |
High |
16037571
|
| 2006 |
Autocrine BMP signaling through BMPR1A in distal lung epithelium regulates proliferation, survival, and morphogenetic behavior; deletion of Bmpr1a in epithelium causes apoptosis, reduced proliferation, and failure of secondary budding in mesenchyme-free culture, with phenotype not rescued by deletion of pro-apoptotic Bax alone. |
Conditional knockout (Cre/lox), Bax double mutant epistasis, mesenchyme-free culture in Matrigel |
Developmental biology |
High |
16414041
|
| 2006 |
Endocardial/endothelial Alk3 deletion severely impairs epithelial-mesenchymal transformation (EMT) in the AV canal, reducing mesenchymal cell number to ~20% of normal; Alk3 also regulates growth/survival of AV cushion mesenchymal cells through regulation of Smad activation and subcellular localization and cell-cycle regulators. |
Conditional knockout (Cre/lox), in vitro explant assays, section studies |
Developmental biology |
High |
16959237
|
| 2007 |
BMPR1a signaling in olig1-expressing progenitors regulates oligodendrocyte lineage commitment and calbindin-positive interneuron specification in the dorsal cortex by controlling cell cycle length in subventricular zone progenitors. |
Conditional knockout (Cre/lox), cell counting, BrdU incorporation |
The Journal of neuroscience |
Medium |
17626200
|
| 2007 |
BMP4-BMPR1A signaling in pancreatic beta cells is required for glucose-stimulated insulin secretion (GSIS); conditional attenuation of BMPR1A signaling in beta cells decreases expression of genes for insulin gene expression, proinsulin processing, glucose sensing, and insulin exocytosis, causing diabetes; transgenic BMP4 overexpression enhances GSIS. |
Conditional knockout/transgenic mice, glucose tolerance tests, gene expression analysis, systemic BMP4 administration |
Cell metabolism |
High |
17339028
|
| 2007 |
Deletion of Bmpr1a in vascular smooth muscle cells attenuates pulmonary vascular remodeling; siRNA knockdown of Bmpr1a in pulmonary arterial smooth muscle cells reduces serum-induced proliferation, and knockdown in pericytes increases resistance to apoptosis, explaining decreased muscularization and vessel loss in hypoxia. |
Conditional knockout (Cre/lox), siRNA knockdown in cultured cells, proliferation and apoptosis assays |
Circulation research |
Medium |
18079409
|
| 2008 |
ALK3/BMPR1A in the ureteric bud lineage controls renal collecting duct branching morphogenesis; Alk3 deficiency leads to abnormal ureteric bud branching, dysplastic renal phenotype with abnormal β-catenin and c-MYC expression in medullary tubules. |
Conditional knockout (Cre/lox), histology, gene expression analysis |
Journal of the American Society of Nephrology |
High |
18178801
|
| 2008 |
BMP-2/ALK3 and HGF operate in parallel downstream pathways during renal collecting duct morphogenesis; HGF rescues BMP-2/ALK3 inhibition without blocking Smad1 phosphorylation, Smad1/Smad4 complex formation, or Smad1 nuclear translocation, indicating integration occurs at transcriptional or post-transcriptional levels. |
Stable cell line with constitutively active ALK3, Smad1 phosphorylation assay, reporter assay, tubule formation assay |
Journal of cell science |
Medium |
10633078
|
| 2008 |
Prenatal deletion of Alk3 in lung epithelium disrupts distal airway formation, reduces surfactant secretion, and perturbs canonical Wnt signaling through reduced Wnt inhibitory factor-1 expression, placing ALK3 upstream of Wnt signaling in lung development. |
Inducible conditional knockout (Cre/lox), gene expression analysis, marker staining |
The American journal of pathology |
Medium |
18258849
|
| 2009 |
TβRIII (TGFβ type III receptor) differentially modulates ALK3 and ALK6 subcellular trafficking: TβRIII associates with ALK3 primarily through extracellular domains and causes cell surface retention of ALK3 independently of β-arrestin2, whereas TβRIII/ALK6 interaction requires both extracellular and cytoplasmic domains and promotes ALK6 internalization, resulting in distinct downstream signaling. |
Co-immunoprecipitation, subcellular localization/internalization assays, reporter assay, mutagenesis |
Molecular biology of the cell |
High |
19726563
|
| 2009 |
BMPR1A is the preferred BMP2 type I receptor in gonadotroph (LbetaT2) cells for regulating Fshb transcription; knockdown of endogenous BMPR1A, but not ACVR1 or BMPR1B, significantly impairs BMP2/activin A synergism on Fshb promoter activity and SMAD1/5 phosphorylation. |
siRNA knockdown, reporter assay, pharmacological inhibition, SMAD phosphorylation assay |
Biology of reproduction |
Medium |
19211807
|
| 2009 |
Bmpr1a and Acvr1 in lens ectoderm regulate cell survival and proliferation respectively; they control lens formation through both Smad-dependent and Smad-independent pathways—FoxE3 expression, αA-crystallin, and placode proliferation are regulated in a Smad4-independent manner, while Sox2 maintenance requires canonical Smad signaling; Smad-independent BMP receptor signaling reorganizes the actin cytoskeleton to drive lens invagination. |
Conditional knockout (Cre/lox), Smad4/1/5 knockout comparisons, actin cytoskeleton analysis |
Developmental biology |
High |
19733164
|
| 2010 |
BMPR1a and BMPR1b exert opposing effects on astrocytic hypertrophy after spinal cord injury; conditional ablation of BMPR1a from GFAP+ cells causes defective astrocytic hypertrophy, while BMPR1b null mice develop hyperactive reactive astrocytes; both receptors regulate astrocytic size through opposing posttranscriptional regulation of microRNA-21, with overexpression of miR-21 causing dramatic cell size reduction. |
Conditional knockout (Cre/lox), double knockout epistasis, miR-21 overexpression, cell size measurement |
The Journal of neuroscience |
High |
20130193
|
| 2010 |
Bmpr1a signaling in the epiblast regulates anterior visceral endoderm (AVE) migration by inducing Wnt3/Wnt3a expression to maintain WNT signaling in the visceral endoderm, which establishes the anterior Dkk1 expression domain required for directional AVE migration; epiblast-specific Bmpr1a deletion causes random AVE migration and circumferential Dkk1 expression. |
Conditional knockout (Cre/lox), WNT3A rescue experiment in embryo culture, gene expression analysis |
Developmental biology |
High |
20211162
|
| 2010 |
Bmpr1a signaling in palatal mesenchyme regulates cell proliferation in the primary and anterior secondary palate; loss of Bmpr1a reduces Msx1 and Fgf10 expression in mesenchyme and Shh in epithelium, indicating BMPR1A controls mesenchymal-epithelial interactions during palatal outgrowth. |
Conditional knockout (Cre/lox), gene expression analysis, cell proliferation assay |
Developmental biology |
High |
21185278
|
| 2011 |
Conditional deletion of Bmpr1a in differentiated osteoclasts increases osteoblastic bone formation (increased bone formation rates), indicating BMPR1A signaling in osteoclasts negatively regulates coupling to osteoblasts; osteoblast-specific deletion of Bmpr1a had opposite effect with decreased bone formation rate. |
Conditional knockout (Cre/lox), bone histomorphometry, bone marker analysis |
Journal of bone and mineral research |
High |
21786321
|
| 2011 |
Alk3 in intermediate mesoderm progenitors controls nephron number via phospho-p38 MAPK signaling (in metanephric mesenchyme) and androgen production via phospho-SMAD1/5/8 signaling (in testis), demonstrating lineage-specific signaling effectors downstream of ALK3. |
Conditional knockout (Cre/lox), signaling pathway analysis (pSMAD and p-p38), histology |
Development (Cambridge, England) |
Medium |
21613322
|
| 2013 |
BMP15 suppresses progesterone production in human granulosa cells via ALK3-mediated SMAD1/5/8 phosphorylation leading to downregulation of StAR; siRNA-mediated depletion of ALK3 reverses BMP15-induced SMAD1/5/8 phosphorylation and StAR suppression. |
siRNA knockdown, pharmacological inhibition (dorsomorphin, DMH-1), SMAD phosphorylation assay, progesterone measurement |
Molecular endocrinology |
High |
24140593
|
| 2013 |
ALK3/BMPR1A is required for blastocyst attachment and uterine implantation; conditional knockout in uterus causes increased microvilli density, maintained apical polarity, elevated E2 response, and unopposed epithelial proliferation; mechanistically, BMPR1A-SMAD4 signaling and progesterone receptor cooperatively regulate Klf15 to inhibit uterine epithelial proliferation. |
Conditional knockout (Cre/lox), gene expression analysis, in vivo fertility assay |
Proceedings of the National Academy of Sciences of the United States of America |
High |
26721398
|
| 2014 |
HFE protein interacts with ALK3/BMPR1A, inhibiting ALK3 ubiquitination and proteasomal degradation, thereby increasing ALK3 protein expression and cell surface accumulation; this leads to enhanced SMAD1/5/8 phosphorylation and hepcidin expression; HH-associated HFE mutants (C282Y, H63D) fail to increase ALK3 cell-surface expression. |
Co-immunoprecipitation, ubiquitination assay, cell surface biotinylation, HFE mutant analysis, Hfe knockout mice |
Blood |
High |
24904118
|
| 2014 |
USP15 is a deubiquitylating enzyme that interacts with SMAD6 and ALK3/BMPR1A; USP15 deubiquitylates ALK3, reducing K48-linked polyubiquitylation and preventing proteasomal degradation, thereby enhancing BMP-induced SMAD1 phosphorylation and transcription of BMP target genes; loss of USP15 inhibits BMP-induced osteoblast differentiation. |
Co-immunoprecipitation, ubiquitination assay (K48-linkage specific), siRNA knockdown, osteoblast differentiation assay, Xenopus embryo experiments |
Open biology |
High |
24850914
|
| 2014 |
miR-885-3p inhibits BMP/Smad/Id1-mediated angiogenesis by directly targeting BMPR1A; overexpression or silencing of BMPR1A affects Smad1/5/8 phosphorylation and Id1 expression in a Smad-dependent manner, controlling angiogenesis. |
miRNA target validation (luciferase), siRNA/overexpression, SMAD phosphorylation assay, in vivo xenograft |
Oncogene |
Medium |
24882581
|
| 2015 |
BMP4 and BMP7 suppress StAR expression and progesterone production in human granulosa-lutein cells via ALK3 and SMAD1/5/8-SMAD4 signaling; siRNA knockdown of ALK3 (but not ALK2 or ALK6) reverses BMP4/7-induced SMAD1/5/8 phosphorylation and StAR suppression; SMAD4 knockdown abolishes the effect. |
siRNA knockdown (receptor-specific), pharmacological inhibitors, SMAD phosphorylation assay, progesterone measurement |
Endocrinology |
High |
26302112
|
| 2015 |
Physiological BMPR1A signaling in osteoblast lineage exerts dual function: it suppresses trabecular bone formation by restricting preosteoblast proliferation (through effectors beyond Smad4, since Smad4 deletion had minor effect), while also promoting osteoblast activity and periosteal bone growth through mTORC1 signaling; inhibition of mTORC1 abolishes BMP2-induced protein anabolism genes in vitro. |
Conditional knockout (Cre/lox), inducible Cre, Smad4 knockout comparison, mTORC1 inhibition in vitro |
Development (Cambridge, England) |
High |
26657771
|
| 2016 |
BMP signaling through BMPR1A in osteocytes suppresses SOST (sclerostin) and RANKL, and increases Wnt/β-catenin signaling; osteocyte-specific Bmpr1a deletion causes dramatic increase in bone mass with decreased osteoclast numbers, establishing that BMPR1A in osteocytes controls bone remodeling by simultaneously inhibiting RANKL (reducing osteoclastogenesis) and inhibiting SOST (activating Wnt). |
Conditional knockout (Cre/lox), molecular analysis of Sost/RANKL/OPG/β-catenin, serum protein analysis, bone histomorphometry |
Bone |
High |
27402532
|
| 2016 |
BMP signaling through BMPR1A in osteoclasts negatively regulates osteoblast mineralization through suppression of connexin 43 (Cx43/GJA1); co-culture of osteoblasts with BMPR1A-deficient osteoclasts promotes osteoblast mineralization; knockdown of Gja1 in mutant osteoclasts reduces this effect, identifying Cx43-mediated gap junction communication as the coupling mechanism. |
Co-culture assay, gene knockdown, mineralization assay |
Journal of cellular biochemistry |
Medium |
27649478
|
| 2017 |
BMP signaling mediated by ALK3/BMPR1A in venous endothelial cells controls venous identity via SMAD1/SMAD5; perturbation of ALK3/BMPR1A in mice and zebrafish results in loss of Ephb4 (venous-specific gene) expression; a venous endothelium-specific Ephb4 enhancer shows enriched SMAD1/5 binding with required SMAD binding motifs. |
Conditional knockout (zebrafish and mouse), enhancer analysis, ChIP/SMAD binding motif analysis |
Nature communications |
High |
30692543
|
| 2017 |
BmpR1A is the major type I BMP receptor for BMP-Smad signaling in neural crest cells during skull development; pSmad1/5/9 levels are undetectable in Bmpr1a homozygous null cells but not in Bmpr1b or Acvr1 null cells; heterozygous loss of Bmpr1a (but not Bmpr1b or Acvr1) rescues craniosynostosis in constitutively active BmpR1A mice, demonstrating dosage-sensitive, preferential signaling through BMPR1A. |
Conditional knockout, constitutively active receptor, genetic rescue experiments, pSmad analysis |
Developmental biology |
High |
28641928
|
| 2017 |
Endothelial ALK2/ACVR1 and ALK3/BMPR1A both provide essential function for BMP-induced retinal angiogenesis in coordination with BMPR2; endothelial-specific deletion of either Alk2 or Alk3 causes delay in radial vascular expansion similar to BMPR2 deletion, identifying ALK2 and ALK3 as critical type I receptors for proangiogenic BMP signaling. |
Inducible endothelial-specific conditional knockout (Cre/lox), retinal vascular analysis |
Arteriosclerosis, thrombosis, and vascular biology |
High |
28232325
|
| 2018 |
HFE signals predominantly via ALK3 to induce hepcidin in vivo; HFE overexpression in control mice increases hepcidin and pSmad1/5 levels, while HFE overexpression in hepatocyte-specific Alk3-deficient mice has no effect on hepcidin, pSmad1/5 levels, or blood parameters. |
AAV-mediated HFE overexpression in Alk3 conditional knockout mice, hepcidin measurement, pSmad analysis |
Communications biology |
High |
30271947
|
| 2018 |
ALK3 undergoes ligand-independent homodimerization, whereas ALK2-ALK3 heterodimer formation is BMP ligand-dependent (BMP2 or BMP6); both ALK3-ALK3 and ALK2-ALK3 receptor complexes functionally induce hepcidin expression in Huh7 cells. |
Co-immunoprecipitation in presence/absence of BMP ligands, hepcidin reporter assay |
Free radical biology & medicine |
Medium |
30227271
|
| 2018 |
IL-6 potentiates BMP-2-induced osteogenic and adipogenic differentiation by promoting cell surface translocation of BMPR1A, which amplifies BMPR1A-mediated BMP/Smad and p38 MAPK pathways respectively in human BMSCs. |
Cell surface translocation assay, SMAD and MAPK pathway activation assays, differentiation assays |
Cell death & disease |
Medium |
29396550
|
| 2018 |
BMP4 controls ΔNp73 expression through BMPR1A, which directly induces NANOG expression and stem-like features in AML leukemic cells; BMPR1A transcript is increased in AML samples and further upregulated by BMP4, and high BMPR1A expression correlates with patient outcome. |
Gene expression analysis, functional stem cell assays (ALDH, functional assays), correlation analysis |
Cell death & disease |
Medium |
30262802
|
| 2019 |
BMPR1a is S-palmitoylated in mouse neural stem cells; genetic manipulation of S-acylated sites affects BMPR1a localization and trafficking, alters BMP signaling, and modulates NSC fate—defective palmitoylation of BMPR1a leads to enhanced oligodendrogenesis in mouse brain. |
Unbiased acylation screen, site-directed mutagenesis of palmitoylation sites, subcellular localization assay, in vivo NSC manipulation |
Proceedings of the National Academy of Sciences of the United States of America |
High |
31772009
|
| 2020 |
BMPR1A is necessary for chondrogenesis and osteogenesis (signaled through BMPR1A-BMPR2 dimerization), while BMPR1B signaling prevents chondrocyte hypertrophy; GDF5 mutants with decreased BMPR1A affinity show minimal chondrogenic/osteogenic activity; stronger BMPR1B-BMPR2 dimerization reduces hypertrophic differentiation. |
GDF5 mutants with altered receptor affinity, receptor dimerization assay, chondrogenic/osteogenic differentiation assays |
Journal of cell science |
Medium |
32764110
|
| 2021 |
BMPR1A is essential for suture stem cell (SuSC) self-renewal; SuSC-specific disruption of Bmpr1a causes precocious differentiation leading to craniosynostosis initiated at the suture midline; BMPR1A was identified as a cell surface marker of human SuSCs, and SuSCs maintained stemness ex vivo without losing osteogenic ability. |
Conditional knockout, ex vivo SuSC culture system, human cell marker identification |
Science translational medicine |
High |
33658353
|
| 2022 |
LAPTM5 promotes lung-specific metastasis by recruiting WWP2 E3 ubiquitin ligase, which binds to BMPR1A and mediates its lysosomal sorting, ubiquitination, and degradation; BMPR1A expression is restored by lysosomal inhibitor chloroquine, and LAPTM5-mediated BMPR1A degradation blocks BMP signaling to sustain cancer stem cell-like traits. |
Co-immunoprecipitation, ubiquitination assay, lysosomal inhibitor treatment, conditional KO, lineage tracing |
Nature communications |
High |
35842443
|
| 2023 |
BMPR1A activation in endothelial cells induces physical interaction between ID2 and ZEB1, sequestering ZEB1 to attenuate Tgfbr2 transcription, thereby reducing EC sensitivity to TGFβ and preventing excessive endothelial-to-mesenchymal transition (EndoMT); endothelial Bmpr1a deletion causes PAH-like symptoms via excessive EndoMT, rescued by endothelial targeting of siRNA against Tgfbr2. |
Conditional knockout, lineage tracing, Co-IP (ID2-ZEB1 interaction), siRNA-LNP therapeutic rescue, ChIP/transcription analysis |
Cardiovascular research |
High |
36166408
|