| 2003 |
RECK was identified as a membrane-anchored GPI-anchored glycoprotein that negatively regulates MMP-2, MMP-9, and MT1-MMP activities. Mice lacking RECK die in utero with elevated MMP activity and reduced collagen type I; this lethal phenotype is partially rescued by MMP-2 null mutation, demonstrating functional interaction between RECK and MMP-2 in vivo. |
Gene knockout mouse model, genetic epistasis (Reck-null × MMP-2-null double mutant), in vitro MMP activity assays |
Cancer metastasis reviews |
High |
12784995
|
| 2003 |
HDAC inhibitor trichostatin A (TSA) up-regulates RECK transcriptionally in human lung cancer cells, increases cell-surface RECK protein, attenuates MMP-2 activity, and suppresses invasion. siRNA knockdown of RECK abolishes the TSA-mediated inhibition of MMP-2 activation, establishing RECK as the mediating effector. |
siRNA knockdown, flow cytometry, gelatin zymography, invasion assay, transcriptional activation assay |
Cancer research |
Medium |
12810630
|
| 2003 |
EBV latent membrane protein 1 (LMP1) represses RECK expression via the ERK/Sp1 signaling pathway, acting through an Sp1 site in the RECK promoter. This RECK suppression is required for LMP1-induced release of active MMP-9 and increased tumor cell invasiveness; re-expression of RECK or inhibition of ERK reverses these effects. |
Promoter reporter assay, ERK inhibitor (PD98059), siRNA, invasion assay, conditioned medium zymography |
Oncogene |
Medium |
14614450
|
| 2004 |
TIMP-2 (but not TIMP-1, and including MMP-inhibitory-dead Ala+TIMP-2) inhibits endothelial cell migration by inducing RECK expression via a Rap1-signaling pathway: TIMP-2 increases Crk–C3G association, activates Rap1, and upregulates RECK, which in turn decreases cell-associated MMP activity. Anti-RECK antibody restores MMP activity and reverses TIMP-2-mediated reduction in migration. RECK-null fibroblasts fail to show TIMP-2-mediated migration inhibition despite Rap1 activation. |
Stable Rap1 overexpression, RECK-null cells, anti-RECK antibody, Co-IP of Crk/C3G, zymography, migration assay |
Cancer research |
High |
15604273
|
| 2005 |
RECK protein is N-glycosylated at Asn86, Asn200, Asn297, and Asn352 (but not Asn39) in HT1080 cells. Glycosylation at Asn297 is required for suppression of MMP-9 secretion, glycosylation at Asn352 is required for inhibition of MMP-2 activation, and glycosylation at Asn86, Asn297, and Asn352 collectively mediates RECK-dependent suppression of tumor cell invasion. |
Site-directed mutagenesis of N-glycosylation sites, zymography, invasion assay |
Cancer research |
High |
16103099
|
| 2006 |
TIMP-2 upregulates RECK via a signaling cascade in which TIMP-2 binding activates Csk-mediated phosphorylation of Src at Tyr-527 (inhibitory), reducing Src kinase activity and causing dephosphorylation of paxillin at Tyr-31/118, which switches signaling from the Rac1 pathway (via paxillin-Crk-DOCK180) to the Rap1 pathway (via paxillin-Crk-C3G), thereby enhancing RECK expression. |
Phospho-specific western blotting, Co-IP of Src/Csk and paxillin complexes, dominant-negative Rap1 |
Oncogene |
Medium |
16491114
|
| 2009 |
RECK transcriptionally suppresses MMP-9 by reducing the binding of Fra-1 and c-Jun to the TRE (AP-1) and κB sites in the MMP-9 promoter. RECK overexpression in HT1080 cells decreases MMP-9 mRNA, and siRNA-mediated RECK knockdown increases MMP-9 mRNA in RECK-expressing cells. |
Gene expression profiling, MMP-9 promoter reporter assay, RECK-specific siRNA, ChIP |
Cancer research |
Medium |
19208844
|
| 2009 |
MT1-MMP and RECK exert opposing roles in hematopoietic progenitor cell (CD34+) motility. RECK expression is lower on circulating progenitors compared to bone marrow cells; G-CSF decreases RECK expression in a PI3K/Akt-dependent manner, elevating MT1-MMP activity. RECK neutralization with antibody promotes motility and egress of bone marrow CD34+ cells, while forced MT1-MMP inhibition impairs homing and mobilization. |
Anti-RECK neutralizing antibody, siRNA, anti-MT1-MMP antibody, in vivo mobilization in NOD/SCID chimeric mice, flow cytometry |
The Journal of clinical investigation |
High |
19197139
|
| 2010 |
RECK is a target of miR-15b/16, miR-21, and miR-372/373. RECK mutants lacking miRNA target sites show augmented tumor/metastasis-suppressor activities. miR-372/373 are upregulated in response to hypoxia via HIF1α and TWIST1; miR-21 is upregulated by RAS/ERK signaling, demonstrating convergence of hypoxia and RAS pathways on RECK suppression through miRNAs. |
3'UTR luciferase reporter, miRNA target site mutagenesis, hypoxia treatment, HIF1α/TWIST1 manipulation, tumor/metastasis suppression assays |
Oncogene |
High |
20154725
|
| 2010 |
In Reck heterozygous mice (Reck+/-), tissue damage after transient cerebral ischemia is augmented, recovery of hippocampal long-term potentiation is compromised, MMP gelatinolytic activity is elevated, and laminin immunoreactivity is reduced, implicating Reck in protection of ECM integrity and neurological recovery after ischemia. |
Reck+/- mouse model, MMP zymography, immunohistochemistry, electrophysiological LTP recording |
Journal of neurochemistry |
Medium |
20796170
|
| 2010 |
RECK is expressed in angiogenic blood vessels during uterine and embryonic vascular remodeling. shRNA-mediated Reck knockdown disrupts formation of vessels with compact, round lumens, and similar defects are seen in Reck-deficient and conditional knockout embryos, implicating Reck in non-sprouting (intussusceptive) angiogenesis. |
shRNA knockdown, Reck conditional knockout mouse, immunohistochemistry, morphological analysis |
BMC developmental biology |
Medium |
20691046
|
| 2011 |
RECK expression induces cell-cycle arrest in colon carcinoma cells by downregulating SKP2 (a ubiquitin ligase component) and upregulating its substrate p27(KIP1). RECK-induced growth suppression is at least partially dependent on p27, and RECK and type I collagen share similar effects on the SKP2-p27 pathway. |
Acute RECK expression, cell cycle analysis, western blotting of SKP2 and p27, p27-dependent rescue experiments |
Oncogene |
Medium |
22158033
|
| 2012 |
In zebrafish, Reck is expressed in neural crest cells and is required cell-autonomously for dorsal root ganglia (DRG) formation. Loss of reck function causes failure of sensory neuron precursors to migrate to the DRG position; four independent alleles of reck all lack DRG, and wild-type reck expression rescues the phenotype. |
Forward genetic screen, identification of four reck alleles, rescue experiment, cell-autonomous mosaic analysis |
Development (Cambridge, England) |
High |
22296847
|
| 2013 |
STAT3 upregulates miR-92a, which post-transcriptionally suppresses RECK via its 3'UTR, leading to increased MMP activity and enhanced lung cancer cell invasion and migration. Anti-miR-92a restores RECK levels and reverses STAT3-induced invasiveness. |
3'UTR luciferase reporter, STAT3 overexpression/inhibitor (S3I-201), pre-miR-92a and anti-miR-92a transfection, gelatin zymography, transwell assay |
British journal of cancer |
Medium |
23820254
|
| 2015 |
Reck and Gpr124 function as integral components of a Wnt7a/Wnt7b-specific signaling complex required for brain angiogenesis (CNS vessel invasion) and DRG neurogenesis in zebrafish. Mosaic restoration of single wild-type tip cells in Wnt/β-catenin-deficient vessels is sufficient to initiate CNS vascular invasion, demonstrating that this pathway selectively controls tip cell function. |
Zebrafish genetic analysis, mosaic single-cell rescue, endothelial-specific expression, live imaging |
eLife |
High |
26051822
|
| 2015 |
Forward genetic screen in zebrafish identified Reck as essential for intracerebral central artery (CtA) formation via canonical Wnt/β-catenin signaling in endothelial cells. reck mutants lack most intracerebral arteries; Reck promotes BBB molecular marker expression. In cultured endothelial cells, Reck also impacts the VEGF cascade. |
Forward genetic screen, zebrafish Reck loss-of-function, Wnt reporter assay in endothelial cells |
Development (Cambridge, England) |
High |
26657775
|
| 2015 |
In glioblastoma cells, forced RECK expression inhibits invasion and migration through rearrangement of actin filaments, promoting stress fibers and mature focal adhesions with phospho-FAK, and reducing lamellipodia. RECK protein localizes predominantly at the leading edge of migrating cells, associated with membrane ruffles. |
RECK overexpression, transwell and wound assays, immunofluorescence, confocal microscopy for actin/FAK localization |
Journal of cellular biochemistry |
Medium |
20127710
|
| 2015 |
RECK knockdown in human mesenchymal stem cells (hMSCs) promotes migration, reduces osteogenic differentiation, increases adipogenesis, and attenuates Wnt/β-catenin signaling (reduced β-catenin stability and reduced transcription of DKK1, AXIN2, RUNX2). RECK also suppresses TIMP-2 transcription but does not affect MMP-2, MMP-9, MT1-MMP, or TIMP-1 in these cells. |
siRNA knockdown, β-catenin reporter (BAR) luciferase assay, differentiation assays, scratch wound/chemotaxis assays |
Cellular and molecular life sciences : CMLS |
Medium |
26459448
|
| 2017 |
Vascular endothelial cell-specific reduction of Reck impairs CNS angiogenesis, and postnatal EC-specific loss of Reck combined with loss of Norrin impairs blood-brain barrier maintenance. The N-terminal CC1 domain of Reck binds the LRR and Ig domains of Gpr124; targeted mutagenesis weakening this interaction (Reck CC1 mutations) reduces Reck/Gpr124 stimulation of Wnt7a signaling in cell culture and impairs CNS angiogenesis in vivo. Soluble Gpr124(LRR-Ig) binds cells expressing Frizzled + Wnt7a/7b + Reck, and soluble Reck(CC1-5) binds cells expressing Frizzled + Wnt7a/7b + Gpr124, demonstrating a tripartite cell-surface complex. |
Conditional EC-specific knockout, targeted domain mutagenesis, cell-binding assays with soluble probes, cell culture Wnt reporter assay |
Neuron |
High |
28803732
|
| 2018 |
RECK directly binds WNT7A and WNT7B (but not WNT3A) with 1:1 stoichiometry as determined by chemical cross-linking and binding assays with purified recombinant soluble RECK. RECK binding stabilizes monomeric, hydrophilic-active WNT7A and prevents its aggregation into inactive hydrophilic aggregates. GPR124 is the predominant binding partner of RECK in rat brain blood vessels in situ, and the GPR124 ectodomain (not transmembrane/intracellular domains) mediates RECK/WNT7-induced canonical Wnt signaling. |
Direct binding assay with purified recombinant proteins, chemical cross-linking, stoichiometry determination, in situ binding (rat brain vessels), Wnt reporter assay with truncated GPR124 constructs |
Cell reports |
High |
30304675
|
| 2019 |
Among amino acids distinguishing Wnt7a/7b from other Wnts, two clusters (one at the N-terminus, one in a protruding loop) are essential for Reck- and Gpr124-dependent signaling. Within Reck, substitutions P256A and W261A in the fourth CC domain (CC4) eliminate Wnt7a stimulation without changing protein abundance or surface localization. Mouse embryos carrying these CC4 mutations have severe forebrain angiogenesis defects. |
Site-directed mutagenesis of Reck CC4 domain and Wnt7a residues, Wnt reporter assay, surface localization analysis, mouse embryo phenotyping |
eLife |
High |
31225798
|
| 2018 |
A shorter RECK isoform (generated by alternative splicing and alternative polyadenylation) promotes cell migration, opposing the canonical RECK isoform. The short RECK protein competes with MMP9 for binding to the Kazal motifs of canonical RECK, thereby liberating MMP9 from inactivating interaction with canonical RECK. Knockdown of the short isoform reduces fibroblast migration, whereas knockdown of canonical RECK increases migration. |
Isoform-specific siRNA knockdown, Matrigel invasion/migration assay, competitive binding assay between short RECK and MMP9 on canonical RECK Kazal motifs |
Molecular biology of the cell |
Medium |
29874120
|
| 2021 |
GDE2 (glycerophosphodiester phosphodiesterase 2) stimulates ADAM10 α-secretase cleavage of APP by shedding and inactivating membrane-tethered RECK, a GPI-anchored inhibitor of ADAM10. In Alzheimer's disease, RECK is highly elevated on the membrane and GDE2 is abnormally sequestered inside neurons. Genetic ablation of GDE2 phenocopies elevated membrane RECK and causes reduced sAPPα, increased Aβ, and synaptic protein loss; RECK reduction restores APP processing balance. |
Genetic ablation (GDE2 KO mice), RECK reduction rescue experiment, biochemical fractionation, sAPPα/Aβ measurement, synaptic protein analysis |
Science translational medicine |
High |
33731436
|
| 2022 |
The WNT7A/WNT7B/GPR124/RECK signaling module is required for mammalian limb development. Using combinations of conditional loss-of-function alleles for Wnt7a, Wnt7b, Gpr124, and Reck (including a Reck allele specifically defective in WNT7A/WNT7B signaling), these factors synergize in limb bone growth and patterning (Lmx1b expression, nail structure formation), establishing RECK as part of this signaling unit in a non-CNS context. |
Conditional knockout combinations, WNT7A/WNT7B-signaling-defective Reck knock-in allele, limb phenotyping |
Development (Cambridge, England) |
High |
35552394
|
| 2013 |
FXR agonist substantially increases hepatic RECK mRNA and protein expression in vivo and in vitro. FXR directly binds an FXR response element within intron 1 of the mouse RECK gene to regulate RECK transcription. FXR agonist reverses the downregulation of RECK in livers from mice fed a methionine- and choline-deficient diet. |
FXR agonist treatment (in vivo and in vitro), ChIP/DNA binding assay for FXR response element, qRT-PCR and western blot |
Biochemical and biophysical research communications |
Medium |
24291500
|
| 2017 |
RECK modulates ER stress by binding to and sequestering GRP78 (glucose-regulated protein 78), thereby releasing the transmembrane sensors (e.g., PERK), which activates eIF2α phosphorylation and enhances ER stress. |
RECK/GRP78 binding assay, PERK/eIF2α phosphorylation measurement (described in review context citing experimental results) |
International journal of molecular sciences |
Low |
28134767
|
| 2023 |
Pancreatic Reck deletion in a PDAC mouse model dramatically augments spontaneous PDAC development with a mesenchymal phenotype, increased liver metastases, and EMT (with tumor cells giving rise to inflammatory CAF-like cells by lineage tracing). RECK re-expression in Reck-null PDAC cells markedly reduces liver metastases, shifts tumor phenotype to epithelial, downregulates MMP2 and MMP3, increases E-cadherin, and decreases EMT transcription factors. An MMP inhibitor recapitulates RECK effects on E-cadherin and EMT factors. |
Pancreatic conditional Reck knockout, lineage tracing, splenic transplantation model, RECK re-expression, MMP inhibitor treatment, western blotting |
The Journal of clinical investigation |
High |
37712427
|
| 2010 |
RECK is upregulated in osteoarthritic (OA) cartilage chondrocytes. siRNA knockdown of RECK reduces chondrocyte spreading and focal adhesions and increases migration (in an MMP activity-dependent manner), while RECK overexpression inhibits migration and promotes proliferation via maintained phospho-FAK and phospho-ERK levels. |
siRNA knockdown, RECK overexpression, monolayer wound assay, MMP activity-dependent pharmacological rescue, immunohistochemistry, western blotting for FAK and ERK phosphorylation |
The American journal of pathology |
Medium |
20395433
|
| 2015 |
RECK expression impedes DNA repair in breast cancer cells by inhibiting erbB signaling and attenuating downstream JAB1 and RAD51 expression, leading to activation of ATM/ATR pathways and γ-H2AX foci formation. Ectopic expression of JAB1 counteracts RECK-induced RAD51 reduction and drug sensitization; EGF or HER-2 overexpression reverses RECK inhibitory effects. |
RECK overexpression, γ-H2AX foci formation, ATM/ATR pathway activation assay, erbB signaling inhibition, JAB1 rescue expression, HER-2/EGF reversal |
American journal of cancer research |
Medium |
26396917
|
| 2016 |
Adgra2 (Gpr124) and Reck traffic to the plasma membrane independently of each other: Adgra2 trafficking depends on precise LRR domain composition but occurs in a Reck-independent manner (CRISPR/Cas9 Adgra2-null cells), and Reck reaches the plasma membrane irrespective of Adgra2 expression, suggesting they meet at the plasma membrane after independent intracellular trafficking. |
CRISPR/Cas9 gene editing of Adgra2, subcellular localization assays, characterization of zebrafish ouchless allele (LRR domain deletion) |
Biology open |
Medium |
27979830
|
| 2022 |
Mycoplasma pneumoniae infection decreases RECK expression in bronchial epithelial cells by inducing Sp1 phosphorylation. RECK overexpression significantly impairs M. pneumoniae-triggered MMP-9 enzymatic activity (without affecting MMP-9 protein level), establishing RECK as a post-translational regulator of MMP-9 activity in this context. |
RECK overexpression, MMP-9 activity assay, Sp1 phosphorylation analysis, specific pathway inhibitors and chromatin co-precipitation |
Virulence |
Medium |
35892136
|