BMPR2

Last updated
BMPR2
Available structures
PDB Ortholog search: PDBe RCSB
Identifiers
Aliases BMPR2 , BMPR-II, BMPR3, BMR2, BRK-3, POVD1, PPH1, T-ALK, bone morphogenetic protein receptor type 2
External IDs OMIM: 600799; MGI: 1095407; HomoloGene: 929; GeneCards: BMPR2; OMA:BMPR2 - orthologs
Orthologs
SpeciesHumanMouse
Entrez

659

12168

Ensembl

ENSG00000204217

ENSMUSG00000067336

UniProt

Q13873

O35607

RefSeq (mRNA)

NM_001204
NM_033346

NM_007561

RefSeq (protein)

NP_001195

NP_031587

Location (UCSC) Chr 2: 202.38 – 202.57 Mb Chr 1: 59.8 – 59.92 Mb
PubMed search [3] [4]
Wikidata
View/Edit Human View/Edit Mouse

Bone morphogenetic protein receptor type II or BMPR2 is a serine/threonine receptor kinase encoded by the BMPR2 gene. It binds bone morphogenetic proteins, members of the TGF beta superfamily of ligands, which are involved in paracrine signaling. BMPs are involved in a host of cellular functions including osteogenesis, cell growth and cell differentiation. Signaling in the BMP pathway begins with the binding of a BMP to the type II receptor. This causes the recruitment of a BMP type I receptor, which the type II receptor phosphorylates. The type I receptor phosphorylates an R-SMAD, a transcriptional regulator.

Contents

Function

Unlike the TGFβ type II receptor, which has a high affinity for TGF-β1, BMPR2 does not have a high affinity for BMP-2, BMP-7 and BMP-4, unless it is co-expressed with a type I BMP receptor. On ligand binding, a receptor complex is formed, consisting of two type II and two type I transmembrane serine/threonine kinases. Type II receptors phosphorylate and activate type I receptors which autophosphorylate, then bind and activate SMAD transcriptional regulators. They bind to BMP-7, BMP-2 and, less efficiently, BMP-4. Binding is weak but enhanced by the presence of type I receptors for BMPs. [5] In TGF beta signaling all of the receptors exist in homodimers before ligand binding. In the case of BMP receptors only a small fraction of the receptors exist in homomeric forms before ligand binding. Once a ligand has bound to a receptor, the amount of homomeric receptor oligomers increase, suggesting that the equilibrium shifts towards the homodimeric form. [5] The low affinity for ligands suggests that BMPR2 may differ from other type II TGF beta receptors in that the ligand may bind the type I receptor first. [6]

Oocyte Development

BMPR2 is expressed on both human and animal granulosa cells, and is a crucial receptor for bone morphogenetic protein 15 (BMP15) and growth differentiation factor 9 (GDF9). These two protein signaling molecules and their BMPR2-mediated effects play an important role in follicle development in preparation for ovulation. [7] However, BMPR2 can't bind BMP15 and GDF9 without the assistance of bone morphogenetic protein receptor 1B (BMPR1B) and transforming growth factor β receptor 1 (TGFβR1) respectively. There is evidence that the BMPR2 signaling pathway is disrupted in the case of polycystic ovary syndrome, possibly by hyperandrogenism. [8]

It appears that the hormones estrogen and follicle stimulating hormone (FSH) have roles in regulating expression of BMPR2 in granulosa cells. Experimental treatment in animal models with estradiol with or without FSH increased BMPR2 mRNA expression while treatment with FSH alone decreased BMPR2 expression. However, in human granulosa-like tumor cell line (KGN), treatment with FSH increased BMPR2 expression. [9]

Clinical significance

At least 70 disease-causing mutations in this gene have been discovered. [10] An inactivating mutation in the BMPR2 gene has been linked to pulmonary arterial hypertension. [11]

BMPR2 functions to inhibit the proliferation of vascular smooth muscle tissue. It functions by promoting the survival of pulmonary arterial endothelial cells, therefore preventing arterial damage and adverse inflammatory responses. It also inhibits pulmonary arterial proliferation in response to growth factors, which prevents the closing of arteries by proliferating endothelial cells. [12] When this gene is inhibited, vascular smooth muscle proliferates and can cause pulmonary hypertension, which, among other things, can lead to cor pulmonale, a condition that causes the right side of the heart to fail. The dysfunction of BMPR2 can also lead to an elevation in pulmonary arterial pressure due to an adverse response of the pulmonary circuit to injury. [12]

It is especially important to screen for BMPR2 mutations in relatives of patients with idiopathic pulmonary hypertension, for these mutations are present in >70% of familial cases. [12]

There have been studies which has correlated BMPR2 with exercise induced elevation of PA pressure by measuring tricuspid regurgitation velocity by echocardiography. [13]

Related Research Articles

<span class="mw-page-title-main">Paracrine signaling</span> Form of localized cell signaling

In cellular biology, paracrine signaling is a form of cell signaling, a type of cellular communication in which a cell produces a signal to induce changes in nearby cells, altering the behaviour of those cells. Signaling molecules known as paracrine factors diffuse over a relatively short distance, as opposed to cell signaling by endocrine factors, hormones which travel considerably longer distances via the circulatory system; juxtacrine interactions; and autocrine signaling. Cells that produce paracrine factors secrete them into the immediate extracellular environment. Factors then travel to nearby cells in which the gradient of factor received determines the outcome. However, the exact distance that paracrine factors can travel is not certain.

<span class="mw-page-title-main">Growth differentiation factor-9</span> Protein-coding gene in the species Homo sapiens

Growth/differentiation factor 9 is a protein that in humans is encoded by the GDF9 gene.

<span class="mw-page-title-main">Bone morphogenetic protein 4</span> Human protein and coding gene

Bone morphogenetic protein 4 is a protein that in humans is encoded by BMP4 gene. BMP4 is found on chromosome 14q22-q23.

<span class="mw-page-title-main">Bone morphogenetic protein 15</span> Protein-coding gene in humans

Bone morphogenetic protein 15 (BMP-15) is a protein that in humans is encoded by the BMP15 gene. It is involved in folliculogenesis, the process in which primordial follicles develop into pre-ovulatory follicles.

<span class="mw-page-title-main">Mothers against decapentaplegic homolog 4</span> Mammalian protein found in Homo sapiens

SMAD4, also called SMAD family member 4, Mothers against decapentaplegic homolog 4, or DPC4 is a highly conserved protein present in all metazoans. It belongs to the SMAD family of transcription factor proteins, which act as mediators of TGF-β signal transduction. The TGFβ family of cytokines regulates critical processes during the lifecycle of metazoans, with important roles during embryo development, tissue homeostasis, regeneration, and immune regulation.

<span class="mw-page-title-main">Mothers against decapentaplegic homolog 9</span> Protein-coding gene in the species Homo sapiens

Mothers against decapentaplegic homolog 9 also known as SMAD9, SMAD8, and MADH6 is a protein that in humans is encoded by the SMAD9 gene.

R-SMADs are receptor-regulated SMADs. SMADs are transcription factors that transduce extracellular TGF-β superfamily ligand signaling from cell membrane bound TGF-β receptors into the nucleus where they activate transcription TGF-β target genes. R-SMADS are directly phosphorylated on their c-terminus by type 1 TGF-β receptors through their intracellular kinase domain, leading to R-SMAD activation.

Smads comprise a family of structurally similar proteins that are the main signal transducers for receptors of the transforming growth factor beta (TGF-B) superfamily, which are critically important for regulating cell development and growth. The abbreviation refers to the homologies to the Caenorhabditis elegans SMA and MAD family of genes in Drosophila.

The transforming growth factor beta (TGFβ) signaling pathway is involved in many cellular processes in both the adult organism and the developing embryo including cell growth, cell differentiation, cell migration, apoptosis, cellular homeostasis and other cellular functions. The TGFβ signaling pathways are conserved. In spite of the wide range of cellular processes that the TGFβ signaling pathway regulates, the process is relatively simple. TGFβ superfamily ligands bind to a type II receptor, which recruits and phosphorylates a type I receptor. The type I receptor then phosphorylates receptor-regulated SMADs (R-SMADs) which can now bind the coSMAD SMAD4. R-SMAD/coSMAD complexes accumulate in the nucleus where they act as transcription factors and participate in the regulation of target gene expression.

<span class="mw-page-title-main">BMPR1A</span> Bone morphogenetic protein receptor

The bone morphogenetic protein receptor, type IA also known as BMPR1A is a protein which in humans is encoded by the BMPR1A gene. BMPR1A has also been designated as CD292.

<span class="mw-page-title-main">ACVR1B</span> Protein-coding gene in humans

Activin receptor type-1B is a protein that in humans is encoded by the ACVR1B gene.

<span class="mw-page-title-main">ACVR1</span> Protein-coding gene

Activin A receptor, type I (ACVR1) is a protein which in humans is encoded by the ACVR1 gene; also known as ALK-2. ACVR1 has been linked to the 2q23-24 region of the genome. This protein is important in the bone morphogenic protein (BMP) pathway which is responsible for the development and repair of the skeletal system. While knock-out models with this gene are in progress, the ACVR1 gene has been connected to fibrodysplasia ossificans progressiva, an extremely rare progressive genetic disease characterized by heterotopic ossification of muscles, tendons and ligaments. It is a bone morphogenetic protein receptor, type 1.

Bone morphogenetic protein receptors are serine-threonine kinase receptors. Transforming growth factor beta family proteins bind to these receptors. There are four bone morphogenetic protein receptors:

<span class="mw-page-title-main">Endoglin</span> Protein-coding gene in the species Homo sapiens

Endoglin (ENG) is a type I membrane glycoprotein located on cell surfaces and is part of the TGF beta receptor complex. It is also commonly referred to as CD105, END, FLJ41744, HHT1, ORW and ORW1. It has a crucial role in angiogenesis, therefore, making it an important protein for tumor growth, survival and metastasis of cancer cells to other locations in the body.

<span class="mw-page-title-main">GDF2</span> Protein-coding gene in the species Homo sapiens

Growth differentiation factor 2 (GDF2) also known as bone morphogenetic protein (BMP)-9 is a protein that in humans is encoded by the GDF2 gene. GDF2 belongs to the transforming growth factor beta superfamily.

<span class="mw-page-title-main">GDF5</span> Protein-coding gene in the species Homo sapiens

Growth/differentiation factor 5 is a protein that in humans is encoded by the GDF5 gene.

<span class="mw-page-title-main">BMPR1B</span> Protein-coding gene in the species Homo sapiens

Bone morphogenetic protein receptor type-1B also known as CDw293 is a protein that in humans is encoded by the BMPR1B gene.

<span class="mw-page-title-main">ACVRL1</span> Protein-coding gene in humans

Serine/threonine-protein kinase receptor R3 is an enzyme that in humans is encoded by the ACVRL1 gene.

<span class="mw-page-title-main">Upstream and downstream (transduction)</span> Sewage Treatment Plant

The upstream signaling pathway is triggered by the binding of a signaling molecule, a ligand, to a receiving molecule, a receptor. Receptors and ligands exist in many different forms, and only recognize/bond to particular molecules. Upstream extracellular signaling transduce a variety of intracellular cascades.

The transforming growth factor beta (TGFβ) receptors are a family of serine/threonine kinase receptors involved in TGF beta signaling pathway. These receptors bind growth factor and cytokine signaling proteins in the TGF-beta family such as TGFβs, bone morphogenetic proteins (BMPs), growth differentiation factors (GDFs), activin and inhibin, myostatin, anti-Müllerian hormone (AMH), and NODAL.

References

  1. 1 2 3 GRCh38: Ensembl release 89: ENSG00000204217 – Ensembl, May 2017
  2. 1 2 3 GRCm38: Ensembl release 89: ENSMUSG00000067336 – Ensembl, May 2017
  3. ↑ "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  4. ↑ "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  5. 1 2 Gilboa L, Nohe A, Geissendörfer T, Sebald W, Henis YI, Knaus P (March 2000). "Bone morphogenetic protein receptor complexes on the surface of live cells: a new oligomerization mode for serine/threonine kinase receptors". Mol. Biol. Cell. 11 (3): 1023–35. doi:10.1091/mbc.11.3.1023. PMC   14828 . PMID   10712517.
  6. ↑ Kirsch T, Nickel J, Sebald W (July 2000). "BMP-2 antagonists emerge from alterations in the low-affinity binding epitope for receptor BMPR-II". EMBO J. 19 (13): 3314–24. doi:10.1093/emboj/19.13.3314. PMC   313944 . PMID   10880444.
  7. ↑ Edwards SJ, Reader KL, Lun S, Western A, Lawrence S, McNatty KP, Juengel JL (2008). "The cooperative effect of growth and differentiation factor-9 and bone morphogenetic protein (BMP)-15 on granulosa cell function is modulated primarily through BMP receptor II". Endocrinology. 149 (3): 1026–30. doi: 10.1210/en.2007-1328 . PMID   18063682.
  8. ↑ de Resende LO, Vireque AA, Santana LF, Moreno DA, de Sá Rosa e Silva AC, Ferriani RA, Scrideli CA, Reis RM (2012). "Single-cell expression analysis of BMP15 and GDF9 in mature oocytes and BMPR2 in cumulus cells of women with polycystic ovary syndrome undergoing controlled ovarian hyperstimulation". J. Assist. Reprod. Genet. 29 (10): 1057–65. doi:10.1007/s10815-012-9825-8. PMC   3492567 . PMID   22825968.
  9. ↑ Paradis F, Novak S, Murdoch GK, Dyck MK, Dixon WT, Foxcroft GR (2009). "Temporal regulation of BMP2, BMP6, BMP15, GDF9, BMPR1A, BMPR1B, BMPR2 and TGFBR1 mRNA expression in the oocyte, granulosa and theca cells of developing preovulatory follicles in the pig". Reproduction. 138 (1): 115–29. doi: 10.1530/REP-08-0538 . PMID   19359354.
  10. ↑ Šimčíková D, Heneberg P (December 2019). "Refinement of evolutionary medicine predictions based on clinical evidence for the manifestations of Mendelian diseases". Scientific Reports. 9 (1): 18577. Bibcode:2019NatSR...918577S. doi:10.1038/s41598-019-54976-4. PMC   6901466 . PMID   31819097.
  11. ↑ Rabinovitch M (December 2012). "Molecular pathogenesis of pulmonary arterial hypertension". J. Clin. Invest. 122 (12): 4306–13. doi:10.1172/JCI60658. PMC   3533531 . PMID   23202738.
  12. 1 2 3 Rabinovitch, Marlene. "Rescuing the BMPR2 Pathway: How and Where Can We Intervene?". Pulmonary Hypertension Association. Retrieved 29 January 2015.[ permanent dead link ]
  13. ↑ Grünig E, Weissmann S, Ehlken N, Fijalkowska A, Fischer C, Fourme T, Galié N, Ghofrani A, Harrison RE, Huez S, Humbert M, Janssen B, Kober J, Koehler R, Machado RD, Mereles D, Naeije R, Olschewski H, Provencher S, Reichenberger F, Retailleau K, Rocchi G, Simonneau G, Torbicki A, Trembath R, Seeger W (2009). "Stress Doppler echocardiography in relatives of patients with idiopathic and familial pulmonary arterial hypertension: results of a multicenter European analysis of pulmonary artery pressure response to exercise and hypoxia". Circulation. 119 (13): 1747–57. doi: 10.1161/CIRCULATIONAHA.108.800938 . PMID   19307479.
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