ArticleThe Biochemical journal2007
Insulin-stimulated exocytosis of GLUT4 is enhanced by IRAP and its partner tankyrase.
Article in The Biochemical journal, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 65 papers, 1 of them a synthesis that pooled it.
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Who cites it
65 citing papers in PubMed, 1 synthesis or guideline pooled it, 130 citations in OpenAlex.
- Genome-wide association scan meta-analysis identifies three Loci influencing adiposity and fat distribution.PLoS genetics · 2009Pooled it
- TNKS1 mediates the PTEN-PI3K/AKT pathway to regulate glycolysis and proliferation in gliomas.IBRO neuroscience reports · 2026Article
- Integrated analysis of the adipocyte plasma membrane proteome reveals KCC1 and PIT2 as novel insulin-responsive transporters.The Journal of biological chemistry · 2026Article
- Review
- GLUT4 Trafficking and Storage Vesicles: Molecular Architecture, Regulatory Networks, and Their Disruption in Insulin Resistance.International journal of molecular sciences · 2025Review
- Quantum Mechanics/Molecular Mechanics Simulations Distinguish Insulin-Regulated Aminopeptidase Substrate (Oxytocin) and Inhibitor (Angiotensin IV) and Reveal Determinants of Activity and Inhibition.Journal of chemical information and modeling · 2025Article
- Modification of adipogenesis and oxidative stress by quercetin: positive or negative impact on adipose tissue metabolism of obese diabetic Zucker rats?Journal of physiology and biochemistry · 2025Article
- PARylation-mediated post-transcriptional modifications in cancer immunity and immunotherapy.Frontiers in immunology · 2025Review
- Tankyrase-1 regulates RBP-mediated mRNA turnover to promote muscle fiber formation.Nucleic acids research · 2024Article
- Inhibitory Effect of a Tankyrase Inhibitor on Mechanical Stress-Induced Protease Expression in Human Articular Chondrocytes.International journal of molecular sciences · 2024Article
- Tankyrase: a promising therapeutic target with pleiotropic action.Naunyn-Schmiedeberg's archives of pharmacology · 2023Review
- Article
- Phosphoproteomics reveals rewiring of the insulin signaling network and multi-nodal defects in insulin resistance.Nature communications · 2023Article
- Knockout of syntaxin-4 in 3T3-L1 adipocytes reveals new insight into GLUT4 trafficking and adiponectin secretion.Journal of cell science · 2022Article
- An Evolutionary Perspective on the Origin, Conservation and Binding Partner Acquisition of Tankyrases.Biomolecules · 2022Article
- Diabetes is accompanied by changes in the levels of proteins involved in endosomal GLUT4 trafficking in obese human skeletal muscle.Endocrinology, diabetes & metabolism · 2022Article
- Post-translational Modifications: The Signals at the Intersection of Exercise, Glucose Uptake, and Insulin Sensitivity.Endocrine reviews · 2022Review
- Characterization of lipoprotein lipase storage vesicles in 3T3-L1 adipocytes.Journal of cell science · 2022Article
- GLUT4 On the move.The Biochemical journal · 2022Article
- PKD-dependent PARP12-catalyzed mono-ADP-ribosylation of Golgin-97 is required for E-cadherin transport from Golgi to plasma membrane.Proceedings of the National Academy of Sciences of the United States of America · 2022Article
5 more citing papers are in PubMed but not listed here.
Corrections and comments
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Authors and funding
5 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The glucose transporter GLUT4 and the aminopeptidase IRAP (insulin-responsive aminopeptidase) are the major cargo proteins of GSVs (GLUT4 storage vesicles) in adipocytes and myocytes. In the basal state, most GSVs are sequestered in perinuclear and other cytosolic compartments. Following insulin stimulation, GSVs undergo exocytic translocation to insert GLUT4 and IRAP into the plasma membrane. The mechanisms regulating GSV trafficking are not fully defined. In the present study, using 3T3-L1 adipocytes transfected with siRNAs (small interfering RNAs), we show that insulin-stimulated IRAP translocation remained intact despite substantial GLUT4 knockdown. By contrast, insulin-stimulated GLUT4 translocation was impaired upon IRAP knockdown, indicating that IRAP plays a role in GSV trafficking. We also show that knockdown of tankyrase, a Golgi-associated IRAP-binding protein that co-localizes with perinuclear GSVs, attenuated insulin-stimulated GSV translocation and glucose uptake without disrupting insulin-induced phosphorylation cascades. Moreover, iodixanol density gradient analyses revealed that tankyrase knockdown altered the basal-state partitioning of GLUT4 and IRAP within endosomal compartments, apparently by shifting both proteins toward less buoyant compartments. Importantly, the afore-mentioned effects of tankyrase knockdown were reproduced by treating adipocytes with PJ34, a general PARP (poly-ADP-ribose polymerase) inhibitor that abrogated tankyrase-mediated protein modification known as poly-ADP-ribosylation. Collectively, these findings suggest that physiological GSV trafficking depends in part on the presence of IRAP in these vesicles, and that this process is regulated by tankyrase and probably its PARP activity.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.