FK 506
Chemical Name: (3S,4R,5S,8R,9E,12S,14S,15R,16S,18R,19R,26aS)-5,6,8,11,12,13,14,15,16,17,18,19,24,25,26,26a-Hexadecahydro-5,19-dihydroxy-3-[(1E)-2-[(1R,3R,4R)-4-hydroxy-3-methoxycyclohexyl]-1-methylethenyl]-14,16-dimethoxy-4,10,12,18-tetramethyl-8-(2-propen-1-yl)-15,19-epoxy-3H-pyrido[2,1-c][1,4]oxaazacyclotricosine-1,7,20,21(4H,23H)tetrone
Purity: ≥99%
Biological Activity
FK 506 is a potent calcineurin (protein phosphatase 2B) inhibitor that requires FK 506-binding protein 12 (FKBP12) for activity (IC50 = 3 nM). Inhibits secretion of IL-1, IL-2 (IC50 = 1 nM), IL-3, IL-4, IL-6 (IC50 = 35 nM), GM-CSF, TNFα (IC50 = 10 nM), IFNγ and Myc from activated T cells in vitro. Exhibits potent immunosuppressive, neuroprotective and anticonvulsant activity in vivo. Identified as targeting human host cell proteins that interact with SARS-CoV-2.Analog also available.
Technical Data
The technical data provided above is for guidance only.
For batch specific data refer to the Certificate of Analysis.
Tocris products are intended for laboratory research use only, unless stated otherwise.
Additional Information
Background References
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The complex of FK506-binding protein 12 and FK506 inhibits calcineurin phosphatase activity and IgE activation-induced cytokine transcripts, but not exocytosis, in mouse mast cells.
Fruman et al.
J.Immunol., 1995;154:1846 -
Tissue distribution and abundance of human FKBP51, and FK506-binding protein that can mediate calcineurin inhibition.
Baughman et al.
Biochem.Biophys.Res.Commun., 1997;232:437 -
Ascomycin and FK506: Pharmacology and therapeutic potential as anticonvulsants and neuroprotectants.
Sierra-Paredes and Sierra-Marcuno
CNS Neurosci.Ther., 2008;14:36 -
A SARS-CoV-2-human protein-protein interaction map reveals drug targets and potential drug-repurposing.
Gordon et al.
Nature, 2020;
Product Datasheets
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Citations for FK 506
The citations listed below are publications that use Tocris products. Selected citations for FK 506 include:
39 Citations: Showing 1 - 10
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Dynamic physiological α-synuclein S129 phosphorylation is driven by neuronal activity.
Authors: Hugh P Et al.
NPJ Parkinsons Dis 2023;9:4
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RASA2 ablation in T cells boosts antigen sensitivity and long-term function.
Authors: Zhongmei Et al.
Nature 2022;609:174-182
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Integrins Bidirectionally Regulate the Efficacy of Inhibitory Synaptic Transmission and Control GABAergic Plasticity.
Authors: Jerzy W Et al.
J Neurosci 2022;42:5830-5842
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LAMTOR1 inhibition of TRPML1-dependent lysosomal calcium release regulates dendritic lysosome trafficking and hippocampal neuronal function.
Authors: Yan Et al.
EMBO J 2022;41:e108119
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Mild membrane depolarization in neurons induces immediate early gene transcription and acutely subdues responses to a successive stimulus.
Authors: Kevin Et al.
J Biol Chem 2022;298:102278
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Calcineurin Controls Cellular Prion Protein Expression in Mouse Astrocytes.
Authors: Armando A Et al.
Cells 2022;11
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Stepwise disassembly of GABAergic synapses during pathogenic excitotoxicity.
Authors: Paco S Et al.
Cell Rep 2021;37:110142
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Differential Regulation of ATP- and UTP-Evoked Prostaglandin E2 and IL-6 Production from Human Airway Epithelial Cells.
Authors: Timothy S Et al.
J Immunol 2021;207:1275-1287
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Cell death-inducing cytotoxicity in truncated KCNQ4 variants associated with DFNA2 hearing loss.
Authors: Satoe Et al.
Dis Model Mech 2021;14
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Roles of glycogen synthase kinase 3 alpha and calcineurin in regulating the ability of sperm to fertilize eggs.
Authors: Douglas Et al.
FASEB J 2020;34:1247-1269
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Local miRNA-Dependent Translational Control of GABAAR Synthesis during Inhibitory Long-Term Potentiation.
Authors: Mark L Et al.
Cell Rep 2020;31:107785
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BCR-Induced Ca2+ Signals Dynamically Tune Survival, Metabolic Reprogramming, and Proliferation of Naive B Cells.
Authors: Christopher J Et al.
Cell Rep 2020;31:107474
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Calcineurin Controls Expression of EAAT1/GLAST in Mouse and Human Cultured Astrocytes through Dynamic Regulation of Protein Synthesis and Degradation.
Authors: Eleonora Et al.
Int J Mol Sci 2020;21
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TRESK is a key regulator of nocturnal suprachiasmatic nucleus dynamics and light adaptive responses.
Authors: Stuart N Et al.
Nat Commun 2020;11:4614
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NMDAR-Activated PP1 Dephosphorylates GluN2B to Modulate NMDAR Synaptic Content.
Authors: Chiu Et al.
Cell Rep 2019;28:332
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Intracellular Ca2+ Homeostasis and Nuclear Export Mediate Exit from Naive Pluripotency.
Authors: Bradley J Et al.
Cell Stem Cell 2019;25:210-224.e6
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FK506 Attenuates the MRP1-Mediated Chemoresistant Phenotype in Glioblastoma Stem-Like Cells.
Authors: Torres Et al.
Int J Mol Sci 2018;19
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Methods for High-throughput Drug Combination Screening and Synergy Scoring.
Authors: Jing Et al.
Methods Mol Biol 2018;1711:351-398
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The Effects of Tacrolimus on T-Cell Proliferation Are Short-Lived: A Pilot Analysis of Immune Function Testing.
Authors: Jing Et al.
Transplant Direct 2017;3:e199
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Calcineurin Dysregulation Underlies Spinal Cord Injury-Induced K+ Channel Dysfunction in DRG Neurons.
Authors: Stephen R Et al.
J Neurosci 2017;37:8256-8272
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Reduced cortical excitatory synapse number in APOE4 mice is associated with increased calcineurin activity.
Authors: Neustadtl Et al.
Neuroreport 2017;28:618
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Long-term depression-associated signaling is required for an in vitro model of NMDA receptor-dependent synapse pruning.
Authors: Henson Et al.
Neurobiol Learn Mem 2017;138:39
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Protein Phosphatase 1-α Regulates AS160 Ser588 and Thr642 Dephosphorylation in Skeletal Muscle.
Authors: Sharma Et al.
Diabetes 2016;65:2606
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Increasing the Receptor Tyrosine Kinase EphB2 Prevents Amyloid-β-induced Depletion of Cell Surface Glutamate Receptors by a Mechanism That Requires the PDZ-binding Motif of EphB2 and Neuronal Activity.
Authors: Miyamoto Et al.
Cell Rep 2016;291:1719
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Transcriptome Profiling of Patient-Specific Human iPSC-Cardiomyocytes Predicts Individual Drug Safety and Efficacy Responses In Vitro.
Authors: Matsa Et al.
Cell Stem Cell. 2016;19:311
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A human and animal model-based approach to investigating the anti-inflammatory profile and potential of the 5-HT2B receptor antagonist AM1030.
Authors: Palmqvist Et al.
J Inflamm (Lond) 2016;13:20
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Intra-CA1 administration of FK-506 (tacrolimus) in rat impairs learning and memory in an inhibitory avoidance paradigm.
Authors: Hadjiasgary Et al.
J Neurosci 2015;18:130
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Heterosynaptic structural plasticity on local dendritic segments of hippocampal CA1 neurons.
Authors: Oh Et al.
Iran J Basic Med Sci 2015;10:162
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Interleukin-6 secretion by astrocytes is dynamically regulated by PI3K-mTOR-calcium signaling.
Authors: Codeluppi Et al.
PLoS One 2014;9:e92649
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Distinct molecular components for thalamic- and cortical-dependent plasticity in the lateral amygdala.
Authors: Mirante Et al.
J Biol Chem 2014;7:62
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Cocaine-induced changes of synaptic transmission in the striatum are modulated by adenosine A2A receptors and involve the tyrosine phosphatase STEP.
Authors: Chiodi Et al.
Neuropsychopharmacology 2014;39:569
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Different dose-dependent mechanisms are involved in early cyclosp. a-induced cholestatic effects in hepaRG cells.
Authors: Sharanek Et al.
Toxicol Sci 2014;141:244
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Ion channel TRPV1-dependent activation of PTP1B suppresses EGFR-associated intestinal tumorigenesis.
Authors: Lars Et al.
J Clin Invest 2014;124:3793-806
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Upregulation of nuclear factor of activated T-cells by nerve injury contributes to development of neuropathic pain.
Authors: Cai Et al.
J Pharmacol Exp Ther 2013;345:161
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Human T cell activation results in extracellular signal-regulated kinase (ERK)-calcineurin-dependent exposure of Tn antigen on the cell surface and binding of the macrophage galactose-type lectin (MGL).
Authors: Vliet Et al.
J Biol Chem 2013;288:27519
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A preferentially segregated recycling vesicle pool of limited size supports neurotransmission in native central synapses.
Authors: Marra Et al.
Neuron 2012;76:579
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Oxytocin-stimulated NFAT transcriptional activation in human myometrial cells.
Authors: Pont Et al.
Mol.Endocrinol. 2012;26:1743
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AKAP79/150 impacts intrinsic excitability of hippocampal neurons through phospho-regulation of A-type K+ channel trafficking.
Authors: Lin Et al.
Br J Pharmacol 2011;31:1323
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Dopamine D4 receptors regulate AMPA receptor trafficking and glutamatergic transmission in GABAergic interneurons of prefrontal cortex.
Authors: Zhen Et al.
J Neurosci 2009;29:550-62
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