| 2000 |
P311 encodes an 8-kDa polypeptide that is rapidly degraded by the lactacystin-sensitive ubiquitin/proteasome system and an unidentified metalloprotease, resulting in a protein half-life of approximately 5 minutes. P311 mRNA expression is decreased by co-expression of oncogenic Met receptor tyrosine kinase and its ligand HGF/scatter factor. |
Proteasome inhibitor (lactacystin) treatment, protein half-life measurement, mRNA expression analysis in transformed cells |
The Journal of biological chemistry |
Medium |
10660586
|
| 2001 |
P311 supports migration of malignant glioma cells; antisense oligodeoxynucleotide knockdown of P311 reduces glioblastoma cell migration, and the protein localizes at focal adhesions in invasive cells. |
Antisense oligodeoxynucleotides, integrin activation assays, immunochemistry, laser capture microdissection followed by quantitative RT-PCR |
Cancer research |
Medium |
11358844
|
| 2002 |
P311 transfection into fibroblast cell lines induces a TGF-β1-independent myofibroblast phenotype characterized by upregulation of SM alpha-actin, SM22, FGF-2, VEGF, PDGF, PDGF receptors, and integrins α3/α5, while simultaneously inhibiting TGF-β1, TGF-β receptor 2, MMP-2, MMP-9, and collagen 1/3 expression. |
Plasmid transfection into NIH 3T3 and C3H10 T1/2 fibroblasts, Western blot, RT-PCR, exogenous TGF-β1 rescue experiments |
The Journal of clinical investigation |
High |
12417574
|
| 2004 |
P311 binds to the TGF-β latency-associated protein (LAP) of TGF-β1 and TGF-β2 (but not TGF-β3) as shown by yeast two-hybrid and co-immunoprecipitation. P311 downregulates TGF-β1 and TGF-β2 expression but not TGF-β3. Deletion of P311's PEST domain reverses its effect on TGF-β isoforms. P311 decreases Smad3 activity, consistent with reduced TGF-β autoinduction. |
Yeast two-hybrid, co-immunoprecipitation, Western blot, deletion mutagenesis of PEST domain, Smad3 activity reporter |
Biochemical and biophysical research communications |
High |
14985127
|
| 2004 |
Ectopically expressed P311 localizes in the cytoplasm and nucleus of neurons; overexpression of P311 induces p21(WAF1/Cip1) expression leading to PC12 cell differentiation with neuron-like morphology; adenoviral P311 gene transfer promotes neurite outgrowth of dorsal root ganglion and hippocampal neurons in vitro, an effect abolished by Rho kinase activation. |
Adenovirus-mediated gene transfer, immunofluorescence localization, PC12 differentiation assay, Rho kinase inhibitor, in vivo facial nerve axotomy model |
Journal of neurochemistry |
Medium |
15485502
|
| 2005 |
P311 is constitutively serine-phosphorylated; dephosphorylation at S59 (near the PEST domain) stabilizes P311 protein and induces glioma cell motility (S59A mutation), while a phosphomimetic S59D mutation causes rapid P311 degradation and reduces migration. P311 binds Filamin A (identified by Co-IP/MALDI-TOF MS) and both colocalize at the cell periphery. P311-induced migration is abolished by β1 integrin dominant-negative inhibitor and requires Rac1 GTPase activity. |
Site-directed mutagenesis (S59A, S59D), co-immunoprecipitation, MALDI-TOF mass spectrometry, immunofluorescence colocalization, dominant-negative β1 integrin, siRNA knockdown of Rac1 |
Neoplasia (New York, N.Y.) |
High |
16229809
|
| 2006 |
P311-induced myofibroblasts migrate in an ameboid pattern (lacking focal adhesions, stress fibers, integrins/MMPs clustering) through activation of GTPase RalA; RalA RNAi reverts migration to mesenchymal type. Ameboid migration is supported by fibrin matrix but is switched to mesenchymal migration by collagen I or TGF-β1. |
RalA siRNA, cell migration assays, matrix composition experiments (fibrin vs collagen I), immunofluorescence for focal adhesions/stress fibers |
Experimental cell research |
Medium |
16934802
|
| 2008 |
P311 functions in an alternative pathway of lipid-droplet accumulation induced by retinoic acid; P311 upregulates genes associated with lipid synthesis and increases intracellular cholesterol, triglyceride, and lipid droplets. P311 is not required for lipogenesis in the canonical NIH3T3-L1 adipogenic differentiation model. |
P311 overexpression/knockdown, lipid staining, cholesterol and triglyceride quantification, gene expression profiling, NIH3T3-L1 differentiation assay |
Journal of cell science |
Medium |
18664493
|
| 2008 |
P311-knockout mice show impaired contextual and cued fear conditioning, social transmission of food preference, Morris water maze performance, and altered emotional responses (reduced fear-potentiated startle), establishing P311 as required for normal learning/memory and emotional responses without affecting motor coordination, balance, hearing, or olfactory discrimination. |
Gene-targeted P311-knockout mice, behavioral battery (Morris water maze, fear conditioning, fear-potentiated startle, social transmission of food preference) |
Genes, brain, and behavior |
Medium |
18616608
|
| 2008 |
P311-knockout mice show normal heat and mechanical pain sensitivity and normal inflammatory pain responses, but exhibit significantly attenuated formalin-induced pain avoidance behavior (affective pain component), placing P311 specifically in the affective but not sensory pain pathway. |
P311-knockout mice, formalin pain test (sensory vs. affective components), heat and mechanical sensitivity tests |
Molecular pain |
Medium |
18549486
|
| 2013 |
P311 is an RNA-binding protein that stimulates translation of TGF-β1, TGF-β2, and TGF-β3 under steady-state conditions. P311-null mice are markedly hypotensive with defects in vascular smooth muscle contractility due to decreased TGF-β1/β2/β3 protein (but not mRNA) levels; this is fully rescued by exogenous TGF-β1–β3. P311-transgenic mice have elevated TGF-β levels and hypertension, establishing a P311–TGF-β translational axis for blood pressure regulation. |
P311-knockout and P311-transgenic mice, blood pressure measurement, vascular contractility assays, polysome fractionation, rescue with exogenous TGF-β1–β3, Western blot |
The Journal of clinical investigation |
High |
24091331
|
| 2014 |
P311 is an intrinsically disordered protein that directly binds eIF3 subunit b (eIF3b) with Kd of 1.26 µM via a central 11-amino acid eIF3b binding motif. P311 also directly binds TGF-β1, -β2, and -β3 5'UTR mRNAs via an RNA recognition motif-like motif. Disruption of P311–eIF3b interaction inhibits TGF-β1/2/3 translation as demonstrated by luciferase reporter assays, polysome fractionation, and Western blot. |
Immunoprecipitation/mass spectrometry, GST pulldown, surface plasmon resonance (Kd measurement), immunohistochemical colocalization, luciferase reporter assays, polysome fractionation, RNA-protein EMSA, UV cross-linking RNA precipitation, CD spectroscopy (PONDR disorder analysis) |
The Journal of biological chemistry |
High |
25336651
|
| 2012 |
Integrin β4 binding protein (ITGB4BP) is a direct interaction partner of P311, confirmed by yeast two-hybrid screening, co-immunoprecipitation in HEK293 cells, and fluorescence resonance energy transfer (FRET) in tissue sections. |
Yeast two-hybrid, co-immunoprecipitation, FRET in tissue sections, immunohistochemistry |
Life sciences |
Medium |
22365962
|
| 2015 |
P311 promotes renal fibrosis in vivo; P311 knockout mice subjected to unilateral ureteral obstruction show significantly reduced interstitial collagen deposition, α-SMA, TGF-β1, and macrophage infiltration. The pro-fibrotic effect operates via TGF-β1/Smad signaling. |
P311-knockout mice, unilateral ureteral obstruction model, histology, immunohistochemistry, Western blot |
Scientific reports |
Medium |
26616407
|
| 2016 |
P311 induces epidermal stem cell (EpSC) to myofibroblast-like cell transdifferentiation via TGF-β1/Smad2/3 signaling. P311 increases TGF-β1 protein without increasing TGF-β1 mRNA (consistent with translational regulation), upregulates TGF-β receptors I/II, and activates Smad2/3. P311 promotes TGF-β1 5'/3'UTR activity. TGF-βRI/II inhibitor LY2109761 and Smad3 siRNA reverse P311-induced transdifferentiation. |
Adenoviral P311 overexpression in human/mouse EpSCs, Western blot, immunofluorescence, real-time PCR, bisulfite sequencing, luciferase reporter assays, pharmacological (LY2109761) and siRNA (Smad3) pathway blockade, P311-KO mouse wound model |
Stem cell research & therapy |
High |
27906099
|
| 2017 |
P311 accelerates epidermal stem cell (EpSC) migration and skin wound reepithelialization through activation of RhoA and Rac1 GTPases (but not Cdc42). Specific RhoA and Rac1 inhibitors (but not Cdc42 inhibitor) suppress P311-induced EpSC migration. P311-knockout mouse wounds show impaired reepithelialization. |
Adenoviral P311 overexpression in human EpSCs, P311-KO mouse wound model, Rho GTPase activity assays, pharmacological inhibitors of RhoA, Rac1, and Cdc42, cell migration assays |
Stem cells and development |
Medium |
27927130
|
| 2019 |
P311 stimulates TGF-β1, -β2, and -β3 translation in lung fibroblasts. P311-knockout mice subjected to bleomycin-induced pulmonary fibrosis show significantly reduced fibrotic changes and decreased TGF-β1/2/3 levels. Forced P311 expression increases TGF-β levels and collagen production in human and mouse lung fibroblasts. TGF-β-neutralizing antibodies abrogate P311-induced collagen production. Rescue of P311-KO mice with recombinant TGF-β1/2/3 restores fibrosis to wild-type levels. |
P311-knockout mice with bleomycin lung fibrosis model, adenoviral P311 overexpression in lung fibroblasts, Western blot, TGF-β neutralizing antibodies, cytokine rescue experiments |
American journal of respiratory cell and molecular biology |
High |
30230348
|
| 2019 |
P311 binds to the PPARγ2 promoter and its knockdown inhibits adipogenic differentiation of 3T3-L1 cells; P311 expression is induced at the onset of adipogenesis and correlates with PPARγ2 and C/EBPα induction. |
siRNA knockdown, 3T3-L1 adipogenesis model, chromatin immunoprecipitation (ChIP) for PPARγ2 promoter binding, Western blot |
Biochemical and biophysical research communications |
Medium |
31146912
|
| 2020 |
Meox1 (mesenchyme homeobox 1), induced by TGF-β1, binds the P311 core promoter and increases P311 transcriptional activity. This Meox1-mediated P311 transcription contributes to altered migration and proliferation of human dermal fibroblasts. |
Bioinformatics promoter analysis, luciferase reporter assays, chromatin immunoprecipitation (ChIP), siRNA knockdown of Meox1, cell migration and proliferation assays |
Frontiers in molecular biosciences |
Medium |
32411720
|
| 2020 |
miR-7a-5p directly targets the 3'UTR of P311 mRNA and suppresses P311 expression; butyrate alleviates diabetic kidney fibrosis in part by inducing miR-7a-5p, which suppresses P311, thereby reducing TGF-β1 translation. Overexpression of P311 offsets butyrate's inhibition of TGF-β1. |
3'UTR luciferase reporter assay, miRNA sequencing, miR-7a-5p agomir in db/db mice, Western blot, RT-PCR, P311 overexpression rescue |
FASEB journal |
Medium |
32539181
|
| 2022 |
P311 promotes M2 polarization of macrophages by upregulating IL-4 receptor expression and activating the IL-4 receptor–STAT6 signaling pathway. P311 regulation of IL-4 receptor expression involves the mTOR signaling pathway. |
P311-knockout mice, macrophage polarization assays, Western blot, flow cytometry for IL-4R/STAT6, mTOR inhibitor experiments, wound healing model |
The Journal of investigative dermatology |
Medium |
36309321
|
| 2022 |
P311 promotes angiogenesis in mesenchymal stem cells by increasing VEGF production through the mTOR signaling pathway. |
P311 overexpression in MSCs, VEGF ELISA, tube formation assay, mTOR inhibitor, in vivo wound model |
Frontiers in immunology |
Medium |
35154140
|
| 2022 |
P311 enhances angiogenesis in human microvascular endothelial cells by activating the VEGFR2/ERK1/2 signaling pathway; siRNA knockdown of VEGFR2 or ERK1/2 inhibitor treatment abolishes P311-induced tube formation. |
Adenoviral P311 overexpression in HMEC-1 cells, Western blot for p-VEGFR2 and p-ERK1/2, siRNA-VEGFR2 knockdown, ERK1/2 inhibitor, tube formation assay, scratch migration assay |
Zhonghua shao shang yu chuang mian xiu fu za zhi |
Medium |
35220700
|
| 2022 |
P311 promotes fibroblast differentiation and granulation tissue formation by upregulating TGF-βRII (type II TGF-β receptor) expression and activating the TGF-βRII–Smad signaling pathway via the mTOR pathway. |
P311-knockout and wild-type mice with full-thickness excisional wounds, Western blot for TGF-βRII and Smad proteins, mTOR inhibitor, in vitro fibroblast differentiation assays |
Burns & trauma |
Medium |
37469904
|
| 2023 |
NREP knockdown in primary human hepatocytes alters one-carbon metabolism, increases cholesterol esters and triglycerides, decreases phosphatidylcholine levels, and activates calcium signaling pathways, implicating NREP in hepatic lipid/metabolic homeostasis. |
siRNA knockdown in primary human hepatocytes, RNA-sequencing, lipidomics, antibody microarray (signalomics) |
Cell chemical biology |
Medium |
37354909
|
| 2023 |
NREP knockdown in chondrocytes inactivates the TGF-β1/Smad2/3 signaling pathway, resulting in downregulation of anabolic markers Col2a1 and Sox9 and upregulation of catabolic markers MMP3 and MMP13, and reduced chondrocyte proliferation. |
siRNA knockdown of NREP in chondrocytes, Western blot for p-Smad2/3, RT-qPCR, CCK-8 and EdU proliferation assays, OA mouse model with IHC |
Journal of orthopaedic translation |
Medium |
38179126
|
| 2023 |
YTHDF1 binds m6A-modified NREP mRNA and promotes its translation; YTHDF1 depletion reduces NREP protein levels and impairs TGF-β–Smad signaling, keratocyte proliferation, migration, and fibroblast-to-myofibroblast differentiation in corneal fibrosis. |
siRNA knockdown of NREP and YTHDF1, SRAMP m6A site prediction, LC-MS m6A profiling, CCK-8, scratch assay, immunofluorescence, Western blot, in vivo alkali burn corneal fibrosis model, YTHDF1 inhibitor (SKLB-Y13) |
Investigative ophthalmology & visual science |
Medium |
42153780
|
| 2024 |
HIF-1α directly binds to the NREP promoter to increase NREP transcriptional activity under hypoxia. NREP promotes breast cancer cell glycolysis (increased glucose consumption, ATP, lactate, glucose transporter expression), cell proliferation, migration, invasion, and EMT. |
Luciferase reporter system, chromatin immunoprecipitation (ChIP), siRNA/overexpression of NREP, HIF-1α inhibition, Seahorse glycolysis assay, cell cycle analysis, apoptosis assay, in vivo xenograft |
Cell death discovery |
Medium |
38697993
|
| 2024 |
Structural variations disrupting the TAD boundary in the Epb41l4a/EPB41L4A locus cause dysregulation of Nrep gene expression, as demonstrated in mouse models with deletion and inversion mutations analyzed by RNA-seq. |
CRISPR/engineered mouse models (deletion and inversion), RNA-seq, 3D genome/TAD analysis |
Scientific reports |
Medium |
38438377
|