| 1997 |
A point mutation in CDMP1/GDF5 substituting the first conserved cysteine in the mature active domain produces a protein that is not secreted and is inactive in vitro; it exerts a dominant-negative effect by preventing secretion of other related BMP family members, proposed to occur through heterodimer formation. |
In vitro secretion assay, functional activity assay, dominant-negative analysis in cell culture |
Nature genetics |
Medium |
9288098
|
| 1999 |
GDF5 is necessary and sufficient for cartilage development and restriction of joint formation to appropriate locations in the digits; recombinant GDF5 protein applied to developing chick and mouse limbs promotes cartilage growth and defines joint-forming boundaries, linking cartilage and joint development. |
Recombinant protein bead implantation in chick and mouse limb buds; genetic analysis of brachypodism mutants; in vivo loss-of-function and gain-of-function |
Developmental biology |
High |
10208739
|
| 1999 |
The BMP antagonist Noggin binds to GDF5 and inhibits all observed effects of GDF5 in vivo (cartilage growth, digit morphogenesis); BMP-7 negatively regulates Gdf5 gene expression in joint-forming regions; Noggin treatment induces ectopic Gdf5 expression in interdigital mesoderm. |
In vivo chick bead implantation with Noggin; in situ hybridization; retroviral misexpression of Hedgehog signals |
Developmental biology |
Medium |
9918693
|
| 2000 |
BMPR1B (ALK6) is the physiological type I receptor transducing GDF5 signal for digit cartilage formation; GDF5 acts through both BMPR1B-dependent and -independent processes; epistasis analysis shows BMPR1B regulates chondrogenesis and segmentation partly through GDF5 and partly independently, and GDF5 can signal through type I receptors other than BMPR1B. |
Mouse insertional mutant (BmprIB regulatory allele), double mutant genetic epistasis (Gdf5 x BmprIB), expression analysis |
Development (Cambridge, England) |
High |
10631181
|
| 2001 |
GDF5 acts at two stages of skeletal development: first it promotes chondrogenic cell condensation by increasing cell adhesion; second, it increases skeletal element size by stimulating cell proliferation in epiphyseal cartilage. Retroviral overexpression of GDF5 in chick limb increased element size and S-phase cells; in vitro micromass cultures showed increased cell adhesiveness. |
Retroviral overexpression (RCAS) in chick embryo, autoradiography (S-phase labeling), micromass and single-cell suspension cultures of limb mesenchyme |
The Journal of bone and joint surgery. American volume |
Medium |
11263662
|
| 2003 |
Members of the GDF5/6/7 subgroup are expressed in distinct subsets of developing joints and are required for joint, ligament, and cartilage formation at different skeletal sites; Gdf5 and Gdf6 double mutants show additive/synergistic defects, establishing functional redundancy and distinct spatial roles within the subgroup. |
Single and double null mouse mutant analysis, skeletal phenotyping |
Developmental biology |
High |
12606286
|
| 2004 |
Ror2 (tyrosine kinase receptor) and BMPR1B (BRI-b, serine/threonine kinase receptor) form a ligand-independent heteromeric complex; the frizzled-like CRD domain of Ror2 is required for this complex; within the complex Ror2 is transphosphorylated by BMPR1B; Ror2 modulates GDF5 signaling by inhibiting Smad1/5 signaling and activating a Smad-independent pathway, both required for chondrogenic differentiation. Epistatic interactions in Ror2, BMPR1B, and Gdf5 compound mutant mice confirm in vivo functional interaction. |
Co-immunoprecipitation, domain-deletion mutants, phosphorylation assays, Smad reporter assays, ATDC5 chondrogenesis assay, compound mutant mouse genetics |
Genes to cells : devoted to molecular & cellular mechanisms |
High |
15569154
|
| 2004 |
GDF5 and BMP4 have distinct functions during chondrogenesis: GDF5 increases the number of prechondrogenic condensations and cartilaginous nodules without altering overall differentiation pattern, and causes sustained elevated Sox9 expression and only transient Col10 upregulation; BMP4 is instructive and induces mesenchymal cells toward the chondrogenic lineage with accelerated maturation. |
Mouse embryonic limb bud micromass culture with recombinant protein treatment, gene expression analysis, histology |
Journal of cellular biochemistry |
Medium |
15048875
|
| 2005 |
GDF5 L441P mutation causes brachydactyly type A2 by abolishing binding to both BMPR1A and BMPR1B ectodomains (loss of function); GDF5 R438L mutation causes symphalangism by acquiring increased binding to BMPR1A (normally BMP2's receptor) while retaining normal BMPR1B binding — a gain of BMP2-like receptor-binding specificity; both mutants show normal Noggin binding. This identifies key receptor-binding specificity determinants in GDF5. |
Biosensor (SPR) interaction analyses with receptor ectodomains, recombinant protein expression, limb bud micromass culture, ATDC5 and C2C12 cell treatment |
The Journal of clinical investigation |
High |
16127465
|
| 2006 |
GDF5 binds specifically to BMPR1b, BMPR2, and ACTR2a receptors; GDF5 induces phosphorylation of Smad1/5/8 and their nuclear translocation, upregulating ID1 and ID3 expression via a Smad-dependent, MAPK-independent pathway in human vascular smooth muscle cells; GDF5 also has chemotactic activity partially dependent on Smad1 and ID1. |
Receptor expression analysis, Smad phosphorylation assay, Smad1 siRNA knockdown, ID1/ID3 reporter/expression assays, p38/ERK inhibitors, chemotaxis assay in HUVSMC |
Journal of molecular and cellular cardiology |
Medium |
16716349
|
| 2008 |
GDF5 N445K and N445T mutations found in multiple synostosis syndrome patients confer resistance to the BMP inhibitor Noggin and altered signaling, causing gain of chondrogenic function. Residue N445 is a key determinant of Noggin sensitivity; BMP9 and BMP10, which naturally have lysine at this position, are also insensitive to Noggin. Swapping two additional residues was required to render BMP9 Noggin-sensitive, demonstrating that this residue is part of the antagonist interface. |
Patient mutation identification, functional studies in chicken micromass culture, ectopic cartilage induction in chick in vivo, sequence and structural comparison |
PLoS genetics |
High |
19956691
|
| 2009 |
GDF5 and BMP2 prevent apoptosis in mouse embryonic fibroblasts (but not smooth muscle cells) via BMPR2; both factors stimulate interaction of BMPR2 with XIAP, reducing XIAP ubiquitination and increasing XIAP protein stability, which then inactivates caspases. This anti-apoptotic mechanism is independent of Smad and MAPK signaling. |
Apoptosis assay, Co-IP of BMPR2 with XIAP, ubiquitination assay, caspase activity assay, in isolated MEFs and SMCs |
Biochimica et biophysica acta |
Medium |
19782107
|
| 2008 |
GDF5 promotes chondrogenesis downstream of BMPR1B (ALK6)/Alk6 signaling; Trps1 protein levels and nuclear translocation are upregulated by GDF5 treatment in a dose-dependent manner via Alk6 and p38 MAPK signaling; Trps1 acts downstream of GDF5 to promote chondrocyte differentiation and apoptosis, and also suppresses Gdf5 expression in a negative feedback loop. |
GDF5 protein treatment of ATDC5 cells, dominant-negative Alk6 (dn-Alk6) inhibition, p38 MAPK inhibitor (SB203580), Trps1 overexpression and knockdown, Western blot, immunofluorescence |
Genes to cells : devoted to molecular & cellular mechanisms |
Medium |
18363966
|
| 2009 |
The OA-risk T allele of rs143383 in the GDF5 5'-UTR mediates reduced GDF5 expression in all joint tissues tested (cartilage, synovium, ligament), demonstrating a joint-wide cis-regulatory effect; a second 3'-UTR polymorphism influences allelic expression of GDF5 independent of rs143383; DEAF-1 protein binds differentially to the two alleles of rs143383 (trans-acting factor). |
Allelic expression imbalance assay in patient tissue, luciferase reporter assay, electrophoretic mobility shift assay (EMSA) |
Arthritis and rheumatism |
Medium |
19565498
|
| 2011 |
DNA methylation of the GDF5 promoter and 5'-UTR regulates GDF5 expression; demethylation correlates with increased GDF5 expression; the CpG sites created by the C alleles of rs143383 and rs143384 are variably methylated; demethylating agent treatment of a heterozygous cell line further increases allelic expression imbalance between C and T alleles, demonstrating epigenetic modulation of the rs143383 genetic effect. |
Bisulfite methylation analysis, demethylating agent (5-aza-2'-deoxycytidine) treatment, allelic expression quantification in cell lines and joint tissues |
Human molecular genetics |
Medium |
21642387
|
| 2013 |
Sp1, Sp3, P15, and DEAF-1 are trans-acting factors that bind to the GDF5 5'-UTR at rs143383; Sp1, Sp3, and DEAF-1 are repressors of GDF5 expression; DEAF-1 preferentially represses the T allele of rs143383 relative to the C allele, contributing to differential allelic expression; Sp1 and DEAF-1 in combination show greatest repressive activity. |
Competition and supershift EMSA, oligonucleotide pulldown with quantitative mass spectrometry, chromatin immunoprecipitation (ChIP), RNA interference (siRNA knockdown), overexpression assays |
PLoS genetics |
High |
23825960
|
| 2013 |
SOX11 directly activates GDF5 expression by binding to conserved SOX family binding sites in the GDF5 5'-UTR, as demonstrated by in vitro and micromass culture overexpression; SOX11 misexpression in developing chick limbs via RCAS virus enhances but does not ectopically induce Gdf5 expression. |
SOX11 overexpression in vitro and in micromass cultures, RCAS retroviral infection in chick limb, reporter/expression assays, binding site identification |
BMC developmental biology |
Medium |
23356643
|
| 2013 |
GDF5 stimulation of human chondrocytes inhibits expression of catabolic enzymes MMP13 and ADAMTS4, and upregulates anabolic genes ACAN and SOX9; this is mediated through upregulation of Wnt inhibitors DKK1 and FRZB, and MMP13 inhibition is specifically dependent on DKK1 (blocking canonical Wnt signaling). |
Human chondrocyte pellet culture, qPCR, ELISA for protein levels, Wnt3a and CHIR-99021 stimulation, DKK1 inhibitor (WAY-262611) co-treatment |
Osteoarthritis and cartilage |
Medium |
24561281
|
| 2014 |
CpG methylation at the +37 site (4 bp upstream of rs143383) within the SP1/SP3 binding site has an allele-specific effect: methylation at this site attenuates SP1, SP3, and DEAF-1 repression of GDF5 promoter activity, and modulates the level and direction of allelic imbalance at rs143383. OA knee cartilage shows greater demethylation at +37 compared with hip cartilage, potentially explaining the knee-specific OA association. |
Bisulfite sequencing of normal and OA cartilage, methylation-sensitive EMSA for SP1/SP3 binding, luciferase promoter reporter assays with methylated constructs |
Human genetics |
Medium |
24861163
|
| 2012 |
YY1 is a trans-acting activator of GDF5: it differentially binds to the alleles of a -41 bp promoter variant (more avidly to the A allele), and YY1 knockdown significantly reduces GDF5 expression; the A allele at -41 bp compensates for reduced expression mediated by the T allele of rs143383, identifying a regulatory site that can be manipulated to modulate GDF5 expression. |
Luciferase reporter assay, EMSA, YY1 siRNA knockdown |
European journal of human genetics : EJHG |
Medium |
22929025
|
| 2013 |
GDF5 and BMP2 induce neurite outgrowth in SH-SY5Y human neuronal cells via a direct neuronal mechanism (not indirect glial effect), dependent on BMP type I receptor activation of canonical Smad1/5/8 signaling. |
SH-SY5Y cell culture with GDF5 and BMP2, Smad1/5/8 phosphorylation assay, BMP receptor activation assay |
Molecular and cellular neurosciences |
Low |
23831389
|
| 2015 |
GDF5 acts as a context-dependent BMP-2 antagonist: in C2C12 cells (but not ATDC5 cells), GDF5 and its BMPR-IA-binding variant GDF5 R57A antagonize BMP2-mediated ALP expression even when signaling occurs solely via BMPR-IA; this context-dependency suggests an additional unidentified GDF5-specific co-receptor modulates signaling output. |
ALP assay in ATDC5 and C2C12 cells, in vivo heterotopic implantation in mice, crystal structure comparison of GDF5 R57A:BMPR-IA and BMP2:BMPR-IA complexes |
BMC biology |
Medium |
26385096
|
| 2016 |
The crystal structure of Gremlin-2 (a DAN-family BMP antagonist) bound to GDF5 at 2.9-Å resolution reveals two Grem2 dimers binding perpendicularly to each GDF5 monomer in an H-like structure; upon complex formation, the dynamic N-terminus of Grem2 undergoes significant conformational change to simultaneously interact with both type I and type II receptor motifs on GDF5. DAN-family members can interact with BMP-type I receptor complexes (unlike Noggin which outcompetes the type I receptor), and Grem2-GDF5 forms a stable aggregate-like structure in vitro. |
X-ray crystallography (2.9-Å resolution), binding studies (SPR/biochemical), structural comparison with unbound Grem2 |
Cell reports |
High |
27524626
|
| 2016 |
Gdf5-positive interzone cells continuously influx into developing joints rather than arising from a single early set of progenitors; using a knockin Gdf5-CreERT2 mouse, early labeling of Gdf5+ cells failed to mark the entire joint, while multiple sequential Cre activation steps showed progressive contribution to various joint compartments; spatiotemporal differences in Gdf5 expression may instruct lineage divergence into different joint tissues. |
Gdf5-CreERT2 knockin mouse lineage tracing, inducible Cre activation at multiple time points, tdTomato reporter |
Cell reports |
High |
27292641
|
| 2016 |
Separate modular enhancers distributed over >100 kb of the Gdf5 locus (including upstream and downstream regions) control expression in distinct joint subsets (axial vs. limb, proximal vs. distal, specific sub-joints like elbow); predicted transcription factor binding sites within these enhancers are required for expression in particular joints; functional rescue in mice confirmed large flanking regions are required for normal joint formation. |
Transgenic mouse enhancer reporter assays, systematic locus survey, functional rescue tests in Gdf5 mutant mice |
PLoS genetics |
High |
27902701
|
| 2017 |
A novel growth enhancer (GROW1) downstream of Gdf5 controls expression at the growing ends of long bones (not joints); GROW1 is required for normal Gdf5 expression at bone ends and normal bone lengths in vivo; a common human base-pair change in GROW1 decreases enhancer activity; the derived allele colocalizes with signatures of positive selection in Neandertals, Denisovans, and non-African humans. |
Transgenic mouse enhancer assays, GROW1 deletion in vivo, human variant functional reporter assay, population genetics analysis |
Nature genetics |
High |
28671685
|
| 2018 |
The embryonic CaVβ1 isoform (CaVβ1E) boosts GDF5 expression downstream of its induction by muscle denervation; CaVβ1E overexpression improves muscle mass wasting in aging mice by increasing GDF5 expression; loss of CaVβ1E in aged muscle is associated with attenuated GDF5-dependent response to denervation. |
CaVβ1E overexpression mouse model, sciatic denervation model, CaVβ1E knockout in aging, GDF5 expression measurement |
Science translational medicine |
Medium |
31694926
|
| 2015 |
Gdf5 progenitors in the enthesis give rise to fibrocartilage cells that mineralize via hedgehog signaling; hedgehog (Hh) pathway is required for enthesis mineralization, as tissue-specific deletion of Smoothened (the obligate Hh transducer) in tendon/enthesis cells leads to significant reductions in mineralized fibrocartilage apposition. |
Gdf5-Cre lineage tracing, tissue-specific Smoothened conditional knockout, histology, immunohistochemistry |
Developmental biology |
High |
26141957
|
| 2012 |
GDF5 W408R mutation (identified by ENU mutagenesis in mice) is secreted and dimerizes normally but inhibits wild-type GDF5 function in a dominant-negative fashion, causing brachypodism, ankylosis and early-onset osteoarthritis; the mutation resides in a highly conserved region of the active signaling domain. |
ENU mutagenesis screen, heterozygous/homozygous phenotypic analysis, dominant-negative functional assay |
Human molecular genetics |
Medium |
17656374
|
| 2012 |
GDF5 S94N mutation (in the knuckle epitope/BMPRII interaction site) impairs binding to BMPRII, reducing Smad and non-Smad signaling and reducing chondrogenic differentiation of ATDC5 cells; paradoxically, the mutation strongly enhances chondrogenesis in mouse micromass cultures because of strongly reduced affinity for Noggin, resulting in gain of function by escaping Noggin inhibition. |
SPR quantitative binding assays, reporter gene assay, ALP assay, qPCR, ATDC5 cell differentiation assay, mouse micromass culture |
Journal of bone and mineral research |
High |
21976273
|
| 2013 |
GDF5 W414R mutation simultaneously causes gain and loss of function: insensitivity to Noggin (gain of function, causing SYNS2) and reduced signaling specifically via BMPR1A (loss of function, causing BDA1). SPR analysis confirmed altered receptor and antagonist binding affinities for this single mutation. |
Primary mesenchymal cell chondrogenesis assay, luciferase reporter assay, Surface Plasmon Resonance (SPR) binding analysis |
PLoS genetics |
High |
24098149
|
| 2018 |
BMP14/GDF5 induces tenogenic differentiation of bone marrow mesenchymal stem cells by upregulating scleraxis, tenomodulin, and Sirt1; BMP14 triggers JNK and Smad1 phosphorylation; Sirt1 deacetylates PPARγ to promote tenogenic differentiation; Sirt1 gain/loss-of-function promotes/inhibits tenogenic differentiation; JNK and Smad1 inhibition increased PPARγ acetylation and inhibited tenogenic markers, defining the BMP14-Sirt1-JNK/Smad1-PPARγ tenogenic differentiation pathway. |
BMSCs treated with BMP14, Sirt1 overexpression and knockdown, JNK and Smad inhibitors, acetylation assay, qPCR and Western blot |
Experimental and therapeutic medicine |
Medium |
30116367
|
| 2020 |
Gdf5 expression is upregulated in articular cartilage following experimental OA (destabilization of medial meniscus) and after acute cartilage injury; expression in injured synovium inversely correlates with YAP (Yes-associated protein) expression; overexpression of YAP suppresses Gdf5 expression in chondroprogenitors in vitro; Gdf5 upregulation in both injury models requires regulatory sequence downstream of Gdf5 coding exons. |
Gdf5-LacZ reporter mouse, DMM experimental OA model, acute cartilage injury model, immunohistochemistry, YAP overexpression in vitro, microarray analysis of human OA cartilage |
Scientific reports |
Medium |
31932746
|
| 2003 |
GDF5 intervertebral disc cells express BMPR1A, BMPR1B, and BMPR2 receptors relevant for GDF5 action; adenoviral GDF5 gene transfer produces two secreted forms consistent with activated GDF5 dimer and proform; overexpressed GDF5 is bioactive and promotes growth of rabbit disc cells. |
Adenoviral gene transfer, western blot (two GDF5 forms), ELISA, [3H]thymidine proliferation assay, receptor expression analysis |
Journal of molecular medicine (Berlin, Germany) |
Low |
14669002
|
| 2015 |
TGF-β1 and GDF5 synergistically drive differentiation of human adipose stromal cells toward nucleus pulposus-like cells; the Smad2/3 pathway mainly governs acquisition of NP cell molecular identity while the Smad1/5/8 pathway controls NP cell morphology. |
hASC culture with growth factors, gene expression analysis, extracellular matrix assessment, in vivo transplantation in nude mice, Smad pathway analysis |
Stem cells (Dayton, Ohio) |
Low |
26661057
|