| 2010 |
MMP-14 (MT1-MMP) is the major protease responsible for shedding of endoglin from the cell surface. Endoglin shedding required direct protein-protein interaction between endoglin and membrane-localized MMP-14, and MMP-14 cleaved endoglin at a site proximal to the transmembrane domain. MMP-14 shRNA and MMP inhibitors blocked soluble endoglin release. |
shRNA knockdown, co-expression studies, cleavage site mutagenesis, MMP inhibitor treatment |
Cancer research |
High |
20424116 22296769
|
| 2007 |
MT1-MMP proinvasive activity is regulated by a Rab8-dependent exocytic pathway. Beta1 integrin-mediated adhesion to collagen triggers polarized exocytosis of MT1-MMP via Rab8-positive vesicles (not Rab11-positive compartments) to invasive structures, and constitutively active Rab8 induces MT1-MMP exocytic traffic, collagen degradation, and invasion. |
Dominant-active/dominant-negative Rab8 mutants, siRNA knockdown of Rab8 vs Rab11, live-cell imaging, collagen invasion assay |
The EMBO journal |
High |
17332756
|
| 2005 |
FAK promotes cell-surface presentation of MT1-MMP by inhibiting endophilin A2-dependent endocytosis. FAK interacts via its second Pro-rich motif with endophilin A2's SH3 domain; Src phosphorylates endophilin A2 at Tyr315, which blocks endophilin/dynamin interaction and thereby inhibits MT1-MMP endocytosis, increasing surface MT1-MMP and ECM degradation. |
Co-immunoprecipitation, phosphorylation site mutagenesis, dominant-negative dynamin, ECM degradation assays, surface biotinylation |
Developmental cell |
High |
16054026
|
| 2013 |
WASH (endosomal Arp2/3 activator) and the exocyst complex interact on MT1-MMP-containing late endosomes and together are required for MT1-MMP exocytic delivery to invadopodia via tubular connections between late endosomes and plasma membrane. |
Co-immunoprecipitation, siRNA knockdown of WASH and exocyst components, live-cell imaging of endosomal tubules, ECM degradation assay |
The Journal of cell biology |
High |
24344185
|
| 2012 |
N-WASP promotes trafficking of MT1-MMP into invasive pseudopodia from late endosomes and stabilizes MT1-MMP at the plasma membrane via direct tethering of MT1-MMP's cytoplasmic tail to F-actin, coupling matrix remodeling with protrusive invasion. |
siRNA knockdown, live-cell imaging, co-immunoprecipitation of MT1-MMP cytoplasmic tail with F-actin/N-WASP, 3D invasion assays |
The Journal of cell biology |
High |
23091069
|
| 2015 |
ARF6, together with its effectors JIP3 and JIP4, regulates MT1-MMP endosomal positioning and exocytosis. JIPs are recruited by WASH on MT1-MMP endosomes and recruit dynein-dynactin and kinesin-1; plasma membrane ARF6 interacts with endosomal JIPs to coordinate motor activity in a tug-of-war mechanism, driving MT1-MMP endosome tubulation and exocytosis. |
siRNA silencing, co-immunoprecipitation, dominant-negative constructs, live-cell imaging, invasion assays |
The Journal of cell biology |
High |
26504170
|
| 2005 |
MT1-MMP is palmitoylated at Cys574 in its cytoplasmic domain; this modification is required for clathrin-mediated internalization and for MT1-MMP-dependent cell migration. The palmitoylation-deficient C574A mutant undergoes caveolae-dependent internalization instead and fails to promote cell migration. |
Palmitoylation-deficient mutagenesis (C574A), internalization assays, caveolae vs. clathrin pathway inhibitors, cell migration assays |
FASEB journal |
High |
15946988
|
| 2014 |
Atypical PKCι (aPKCι) promotes delivery of MT1-MMP from late endosomal compartments to the plasma membrane by phosphorylating cortactin, which regulates cortactin association with the membrane scission protein dynamin-2 on MT1-MMP-positive endosomes. |
siRNA silencing of aPKC, phosphorylation assays, co-localization studies, ECM degradation and invasion assays |
PNAS |
High |
24753582
|
| 2010 |
MT1-MMP is required for macrophage/myeloid cell fusion during osteoclast and giant-cell formation. The cytoplasmic tail of MT1-MMP (independent of catalytic activity) associates with p130Cas and thereby regulates Rac1 activity and membrane targeting of Rac1, which is required for lamellipodia formation and proper cell migration prior to fusion. |
MT1-MMP-null mice, retroviral rescue with catalytic-dead mutants, protein binding assays (co-IP), Rac1 GTPase activity assay, in vitro and in vivo osteoclastogenesis assays |
Developmental cell |
High |
20152179
|
| 2012 |
MT1-MMP forms a complex with FGFR2 and ADAM9 on osteoblasts and proteolytically inactivates ADAM9, preventing ADAM9-mediated ectodomain shedding of FGFR2. Loss of MT1-MMP increases ADAM9 activity and FGFR2 shedding, impairing FGF-induced proliferation; Adam9 depletion fully rescues defective FGFR2 signaling and largely restores calvarial bone growth in Mmp14−/− embryos. |
Genetic epistasis (Mmp14-/- mice, Adam9 knockdown rescue), co-immunoprecipitation, in vitro cleavage assays, FGF signaling readouts |
Developmental cell |
High |
22632802
|
| 2011 |
MT1-MMP expressed in bone marrow stromal cells cleaves the Notch ligand Delta-like 1 (Dll1) on the cell surface, reducing Notch signaling in hematopoietic progenitor cells and thereby maintaining normal B-lymphocyte development. Recombinant MT1-MMP cleaves a synthetic Dll1 peptide at the same site. |
MT1-MMP-null mice, co-culture experiments, DAPT (Notch inhibitor) rescue, direct cleavage of synthetic Dll1 peptide by recombinant MT1-MMP, co-immunoprecipitation of MT1-MMP with Dll1 |
The EMBO journal |
High |
21572390
|
| 2013 |
MT1-MMP cytoplasmic tail activates HIF-1 in cancer cells during normoxia by binding and inhibiting FIH-1 (a HIF-1 suppressor) through Mint3. mTOR phosphorylates Mint3, which is required for FIH-1 inhibition; rapamycin blocks this phosphorylation and reduces HIF-1 activity. |
Inhibitor screen (252 compounds), mTOR inhibitor (rapamycin) treatment, phosphorylation-deficient Mint3 mutants, tumor xenograft assays |
Molecular and cellular biology |
High |
24164895
|
| 2017 |
GALNT1-mediated O-glycosylation of MMP14 in the endoplasmic reticulum (ER), but not in the Golgi, activates MMP14 and promotes matrix degradation and tissue invasion. ER-targeted GALNT1 glycosylates MMP14, a process required for tumor expansion in a mouse liver cancer model. |
ER-targeted GALNT1 expression, MMP14 glycosylation biochemical analysis, in vivo mouse liver cancer model, invasion and matrix degradation assays |
Cancer cell |
High |
29136507
|
| 2020 |
FBXO6, an E3 ubiquitin ligase subunit, ubiquitinates MMP14 leading to its proteasomal degradation; TGFβ-SMAD2/3 signaling upregulates FBXO6 transcription, thereby suppressing MMP14 levels and MMP14-dependent proteolytic activation of MMP13 in cartilage. |
Co-immunoprecipitation (FBXO6-MMP14 interaction), FBXO6 global and conditional KO mice, ubiquitination assays, SMAD2-/- mice, OA models |
Annals of the rheumatic diseases |
High |
32409323
|
| 2020 |
In macrophages after myocardial infarction, MT1-MMP activates latent TGFβ1, which acts paracrine via SMAD2 signaling in endothelial cells to drive endothelial-to-mesenchymal transition (EndMT) and cardiac fibrosis. Macrophage-specific Mmp14 knockout attenuated post-MI cardiac dysfunction and reduced EndMT. |
Macrophage-specific conditional KO (Mmp14f/f:Lyz2-Cre), co-culture assays, SMAD2 phosphorylation readout, 3D cardiac imaging |
eLife |
High |
33063665
|
| 2022 |
MT1-MMP cleaves the Insulin Receptor to suppress insulin signaling during ageing and obesity. MT1-MMP activation increases in insulin-sensitive tissues with age; MT1-MMP inhibition restores Insulin Receptor expression and improves insulin sensitivity in aged and diabetic mouse models. |
MT1-MMP overexpression in liver (reducing Insulin Receptor), MT1-MMP inhibition in aged/diabetic mice, in vitro cleavage assays, plasma biomarker correlation in humans and non-human primates |
Nature communications |
High |
35768470
|
| 2022 |
MT1-MMP proteolytically cleaves GFRAL (the cognate receptor of GDF15) in GFRAL+ neurons, inactivating GDF15-GFRAL anorectic signaling in obese mice. Neuron-specific MT1-MMP ablation restored GFRAL expression and reduced weight gain and food intake in obese mice. |
Neuron-specific (GFRAL+) MT1-MMP conditional KO, GFRAL-deficient rescue experiment, in vivo body weight and food intake measurements, in vitro cleavage assays |
Nature metabolism |
High |
35177851
|
| 2004 |
In furin-negative cancer cells, MT1-MMP zymogen traffics to the plasma membrane via a Brefeldin A-resistant (unconventional) pathway and undergoes autocatalytic processing on the cell surface. Active MT1-MMP then acts as a prointegrin convertase, cleaving pro-αv integrin to generate the mature αvβ3 heterodimer. |
Furin-negative cell system (LoVo cells), Brefeldin A treatment, surface biotinylation, integrin maturation assays, invasion and tumor growth in vivo |
Traffic (Copenhagen, Denmark) |
High |
15260832
|
| 2013 |
ADAM12 recruits endogenous MMP-14 to the cell surface via a ternary complex with αVβ3 integrin, promoting MMP-14 activation, gelatin degradation, and protection of tumor cells from apoptosis. Neither ADAM12 catalytic activity nor its cytoplasmic tail were required for MMP-14 activation in this complex. |
Co-immunoprecipitation, surface recruitment assays, ADAM12-specific monoclonal antibodies, orthotopic xenograft model, apoptosis assays |
Journal of cell science |
High |
24006261
|
| 2015 |
The cytoplasmic tail of MT1-MMP directly binds the FERM domain of radixin (ERM protein); crystal structure shows the central region of MT1-MMP tail makes antiparallel β-β interaction with subdomain A of the FERM domain. Radixin simultaneously binds MT1-MMP and CD44, co-localizing protease and substrate at F-actin and accelerating CD44 shedding. |
Crystal structure of MT1-MMP cytoplasmic tail / radixin FERM complex, co-immunoprecipitation, CD44 shedding assays |
Genes to cells |
High |
26289026
|
| 2016 |
MT1-MMP islet formation at the plasma membrane of macrophages depends on the cytoplasmic tail of MT1-MMP and its ability to bind the subcortical actin cytoskeleton (independent of proteolytic activity). MT1-MMP islets persist after podosome dissolution and act as spatial memory devices for podosome re-emergence. |
TIRF microscopy, siRNA knockdown, complementation with cytoplasmic tail truncation mutants, functional podosome reformation assays |
The Journal of cell biology |
High |
27069022
|
| 2011 |
MT1-MMP regulates fibronectin turnover by two mechanisms: (1) extracellular proteolytic cleavage of fibronectin, and (2) regulation of α5β1-integrin endocytosis. Cells lacking MT1-MMP show reduced ECM fibronectin turnover, and fibronectin polymerization inhibits α5β1-integrin endocytosis by stabilizing fibrils. |
MT1-MMP-null cells, ECM fibronectin turnover/endocytosis assays, integrin trafficking assays |
Journal of cell science |
High |
22159414
|
| 2006 |
MT1-MMP is required for myoblast elongation and cell fusion during myogenic differentiation, acting independently of the genetic myogenic transcription program. MT1-MMP degrades fibronectin (a fusion inhibitor) and cleaves laminin-2/4 in the basement membrane at distinct differentiation stages. |
MMP inhibitor treatment of differentiating myoblasts, MT1-MMP-null mice, in vitro differentiation assays with stage-specific substrate readouts |
Journal of cell science |
High |
16926191
|
| 2008 |
PGE2 induces MT1-MMP membrane clustering on endothelial cells; MT1-MMP then releases active TGFβ from its latent form, activating Alk5-Smad3 signaling and endothelial tube formation/neovascularization. MT1-MMP-dependent TGFβ activation is required for PGE2-induced angiogenesis. |
MT1-MMP knockdown, Smad3 nuclear translocation assays, TGFβ activation assays, in vitro cord formation, in vivo neovascularization model |
Blood |
High |
18541723
|
| 2019 |
MT1-MMP directs invadopodia assembly independent of its proteolytic activity; however, MT1-MMP matrix-degradative activity is required to widen matrix pores, enabling actin polymerization-driven pushing forces to generate the invasive pathway. Electron microscopy reveals polymerized Arp2/3 actin network at concave side of invadopodia. |
Electron microscopy of invadopodia ultrastructure, catalytic-dead MT1-MMP mutants, force measurements, 3D collagen invasion assay |
Nature communications |
High |
31653854
|
| 2016 |
RAB2A controls post-endocytic trafficking of MT1-MMP by interacting with VPS39 (a component of the late endosomal HOPS complex), and separately regulates Golgi transport of E-cadherin, thereby controlling tumor invasiveness. |
Functional siRNA screen of human RAB GTPases, co-immunoprecipitation (RAB2A with VPS39), MT1-MMP trafficking assays, 3D invasion assays |
EMBO reports |
High |
27255086
|
| 2020 |
GRAF2 and WDR44 mediate Rab8/10/11-dependent exocytic export of newly synthesized MMP14 to the plasma membrane. WDR44 labels tubular endosomes aligned with ER via VAPA/B; GRAF2 BAR domain tubulates membranes and is required for WDR44 tubule formation. |
Dominant-negative GRAF1/2 and WDR44 mutants, co-immunoprecipitation, endosome tubulation imaging, MMP14 surface delivery assays |
The Journal of cell biology |
High |
32344433
|
| 2013 |
Tetraspanins (CD9, CD37, CD53, CD63, CD81, CD82) and tetraspanin-like MAL protein associate with MT1-MMP through its hemopexin domain in the endoplasmic reticulum, independently of O-glycosylation. Different tetraspanins differentially affect MT1-MMP cell-surface localization, pro-MMP-2 activation, and collagen invasion capacity. |
Yeast two-hybrid screen (identified EWI-2 interaction), co-immunoprecipitation panel, MT1-MMP truncation and domain mutants, pro-MMP-2 activation assay, collagen invasion assay |
The international journal of biochemistry & cell biology |
High |
23500527
|
| 2016 |
TOM1L1 is phosphorylated on Ser321 downstream of ERBB2, promoting GAT domain-dependent association with the sorting protein TOLLIP and driving trafficking of MT1-MMP from endocytic compartments to invadopodia for ECM degradation and tumor invasion. |
Phosphorylation site mutagenesis (Ser321), co-immunoprecipitation (TOM1L1-TOLLIP), MT1-MMP trafficking assays, invadopodia ECM degradation assays, breast cancer cell invasion |
Nature communications |
High |
26899482
|
| 2020 |
SNX27-retromer selectively recycles MT1-MMP (but not MT2-MMP) from endosomes to invadopodia. ITC-based studies showed both SNX27 and retromer can directly interact with MT1-MMP, and SNX27 depletion reduced matrix degradation and tumor invasion in xenograft models. |
ITC (isothermal titration calorimetry) for direct binding, siRNA knockdown of SNX27/retromer, MT1-MMP recycling assays, ECM degradation assays, SCID mouse xenograft survival |
The Journal of cell biology |
High |
31820782
|
| 2004 |
TIMP-2 is released primarily as an intact functional molecule (>85%) after binding to MT1-MMP on the cell surface; furin-mediated activation of proMT1-MMP is required for TIMP-2 binding and subsequent endocytosis. Dynamin-dependent endocytosis mediates TIMP-2 cellular entry. |
125I-TIMP-2 binding and release assays, dominant-negative dynamin transfection, furin inhibitor treatment, surface biotinylation of MT1-MMP |
Experimental cell research |
High |
14729066
|
| 2012 |
MT1-MMP knockdown (but not MMP1, 3, or 13) inhibited fibroblast-mediated collagen contraction in Dupuytren's disease, and MT1-MMP knockdown prevented proMMP-2 activation in this contraction model. MMP-2 knockdown also inhibited contraction, demonstrating MT1-MMP acts upstream of MMP-2 in this process. |
siRNA knockdown of specific MMPs, fibroblast-populated collagen lattice (FPCL) contraction model, proMMP-2 activation assay |
Biochimica et biophysica acta |
Medium |
22342364
|
| 2007 |
MT1-MMP cleaves collagen fibrils on the cell surface and is required for collagen phagocytosis by fibroblasts and highly metastatic cancer cells. MT1-MMP (but not MMP-2) localizes to sites of collagen cleavage on the cell surface and within cells at phagocytic structures. |
Laser confocal microscopy, transmission electron microscopy, biochemical cleavage assays, MT1-MMP expression correlation with phagocytosis |
Biochemical Society transactions |
Medium |
17635128
|
| 2019 |
MT1-MMP in endothelial cells cleaves thrombospondin-1 (TSP1); the C-terminal fragment of TSP1 binds CD47/αvβ3 integrin to promote nitric oxide production, vasodilation, and intussusceptive angiogenesis during colitis. |
Endothelial-specific MT1-MMP conditional KO mice, lentiviral rescue, intravital microscopy, TSP1 cleavage assays, integrin binding peptide competition |
EMBO molecular medicine |
High |
31793743
|
| 2016 |
KLF6 transcription factor directly binds the MMP14 gene promoter (shown by ChIP assay) and upregulates MMP14 transcription, leading to increased soluble endoglin release via MMP14-mediated endoglin shedding during vascular injury/wound healing. |
ChIP assay (KLF6-MMP14 promoter interaction), promoter reporter assays, siRNA knockdown of KLF6, Klf6+/- mice with wire-induced denudation |
Angiogenesis |
High |
26850053
|
| 2018 |
PROX1 transcription factor suppresses MMP14 transcription by binding and inhibiting the MMP14 promoter. PROX1 deletion in murine dermal lymphatic vessels and in human LECs increased MMP14 expression; PROX1 silencing increased MMP14-dependent 3D invasion. |
Promoter binding assay, in vivo conditional Prox1 deletion in lymphatic endothelium, siRNA silencing in human LECs, 3D invasion assays |
Scientific reports |
High |
29934628
|
| 2008 |
MT1-MMP suppresses DKK3 gene transcription, and knockdown of MT1-MMP markedly upregulates DKK3 mRNA (at the transcriptional, not mRNA stability, level); DKK3 is an invasion inhibitor, and this transcriptional regulation of DKK3 by MT1-MMP contributes to urothelial cell invasion. |
siRNA knockdown of MT1-MMP, expression arrays, DKK3 mRNA stability assays, overexpression of DKK3, invasion assays |
British journal of cancer |
Medium |
18665176
|
| 2020 |
β1 integrin activation induces phosphorylation of MT1-MMP at Thr567 via a Src-EGFR signaling pathway, promoting MT1-MMP internalization and recycling to invadopodia, and enhancing cancer cell invasiveness and invadopodium formation. |
β1 integrin activating antibody (P4G11), phosphorylation site analysis (Thr567), Src/EGFR inhibition, MT1-MMP internalization assays, invadopodium formation assays |
Journal of cell science |
High |
32205364
|
| 2010 |
β-catenin in non-cancer cells directly interacts with the 18-amino-acid cytoplasmic tail of MT1-MMP to inhibit its cell-surface localization and proteolytic activity, while in cancer cells nuclear β-catenin activates MT1-MMP transcription via Tcf-4/Lef. |
Direct interaction assay (co-IP with MT1-MMP cytoplasmic tail), surface localization assay, pro-MMP-2 activation assay, promoter reporter assays, 3D collagen growth assays |
Journal of cellular physiology |
Medium |
20589835
|
| 2016 |
MMP14 in exosomes derived from corneal fibroblasts cleaves VEGFR1 but not VEGFR2 in vitro, and MMP14-containing exosomes promote VEGFA-induced endothelial cell migration and proliferation; this cleavage was abrogated by pan-MMP inhibitor GM6001 and absent in exosomes from MMP14 exon4-deficient fibroblasts. |
In vitro proteolysis with recombinant VEGFR1/R2, MMP14-deficient fibroblast exosomes, GM6001 inhibitor, endothelial migration (Boyden chamber) and proliferation (BrdU) assays |
Investigative ophthalmology & visual science |
High |
31117124
|
| 2019 |
MMP-14 cleaves tropoelastin and mature skin elastin in vitro, with cleavage preference for small/medium hydrophobic residues (Gly, Ala, Leu, Val) at P1'. Cleavage of mature skin elastin by MMP-14 releases bioactive elastin peptides. |
In vitro digestion of recombinant tropoelastin and human skin elastin with MMP-14; mass spectrometric peptide analysis; molecular docking studies |
Biochimie |
High |
31278967
|
| 2013 |
CDCP1 colocalizes with MT1-MMP in caveolin-1/lipid raft-containing vesicular structures, co-immunoprecipitates with MT1-MMP, and its knockdown markedly inhibits MT1-MMP accumulation at invadopodia and MT1-MMP-dependent ECM degradation in breast cancer and melanoma cells. |
Co-immunoprecipitation of CDCP1 with MT1-MMP, siRNA knockdown of CDCP1, immunofluorescence of MT1-MMP at invadopodia, Matrigel invasion assay |
Molecular cancer research |
Medium |
23439492
|
| 2014 |
Basal localization of MT1-MMP in polarized epithelial cells is required for collagen degradation and tubulogenesis. HGF induces basal redistribution of MT1-MMP; deletion of the MT-loop or hemopexin domain prevents basal localization. TGFβ at high doses inhibits basal MT1-MMP localization and tubulogenesis. |
MT1-MMP domain deletion mutants, HGF stimulation, TGFβ treatment, 3D collagen tubulogenesis assay, confocal imaging of MT1-MMP localization |
Journal of cell science |
High |
24463815
|
| 2012 |
VANGL2 (a planar cell polarity protein) regulates the endocytosis and cell-surface availability of MMP14 in a FAK-dependent manner. Loss of Vangl2 in zebrafish leads to increased Mmp14 activity and decreased ECM; in vivo knockdown of Mmp14 partially rescues the Vangl2 loss-of-function convergence and extension phenotype. |
Zebrafish vangl2 mutants and Mmp14 morpholino knockdown, genetic epistasis (Vangl2/Mmp14 double knockdown rescue), MMP14 endocytosis assays, ECM quantification |
Journal of cell science |
High |
22357946
|
| 2019 |
TMZ treatment promotes nuclear translocation of MMP14 in glioblastoma cells, followed by extracellular release of DLL4. DLL4 then stimulates cleavage of Notch3, its nuclear translocation, and induction of stemness/sphere formation capacity. |
Kiloplex ELISA-based protein array, subcellular fractionation of MMP14, functional sphere-formation assay, DLL4 siRNA rescue |
International journal of cancer |
Medium |
31443114
|
| 2013 |
MT1-MMP drives a combinatorial proteolytic program in endothelial cells. Quantitative proteomics of MT1-MMP-null vs. wild-type endothelial cells identified substrates including TSP1, CYR61, NID1, and SEM3C; combined substrate processing determines biological outcomes for chemotaxis, adhesion, and angiogenesis. |
Quantitative proteomics (MT1-MMP-null vs. WT mouse endothelial cells), substrate validation assays, in vitro angiogenesis readouts |
FASEB journal |
High |
22859368
|