NFAT Inhibitor

NFAT inhibitor CAS# 249537-73-3

NFAT Inhibitor

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Chemical structure

NFAT Inhibitor

3D structure

Chemical Properties of NFAT Inhibitor

Cas No. 249537-73-3 SDF Download SDF
PubChem ID 16135717 Appearance Powder
Formula C75H118N20O22S M.Wt 1683.94
Type of Compound N/A Storage Desiccate at -20°C
Synonyms VIVIT peptide
Solubility Soluble to 2 mg/ml in water
Sequence MAGPHPVIVITGPHEE
Chemical Name (2S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-1-[2-[[(2S,3R)-2-[[(2S,3S)-2-[[(2S)-2-[[(2S,3S)-2-[[(2S)-2-[[(2S)-1-[(2S)-2-[[(2S)-1-[2-[[(2S)-2-[[(2S)-2-amino-4-methylsulfanylbutanoyl]amino]propanoyl]amino]acetyl]pyrrolidine-2-carbonyl]amino]-3-(1H-imidazol-5-yl)propanoyl]pyrrolidine-2-carbonyl]amino]-3-methylbutanoyl]amino]-3-methylpentanoyl]amino]-3-methylbutanoyl]amino]-3-methylpentanoyl]amino]-3-hydroxybutanoyl]amino]acetyl]pyrrolidine-2-carbonyl]amino]-3-(1H-imidazol-5-yl)propanoyl]amino]-4-carboxybutanoyl]amino]pentanedioic acid
SMILES CCC(C)C(C(=O)NC(C(C)C)C(=O)NC(C(C)CC)C(=O)NC(C(C)O)C(=O)NCC(=O)N1CCCC1C(=O)NC(CC2=CN=CN2)C(=O)NC(CCC(=O)O)C(=O)NC(CCC(=O)O)C(=O)O)NC(=O)C(C(C)C)NC(=O)C3CCCN3C(=O)C(CC4=CN=CN4)NC(=O)C5CCCN5C(=O)CNC(=O)C(C)NC(=O)C(CCSC)N
Standard InChIKey QPMHUXBSHGAVGD-MCDIZDEASA-N
Standard InChI InChI=1S/C75H118N20O22S/c1-12-39(7)59(90-70(111)57(37(3)4)88-68(109)52-19-16-27-95(52)74(115)49(30-44-32-78-36-82-44)87-67(108)51-18-15-26-94(51)53(97)33-79-62(103)41(9)83-63(104)45(76)24-28-118-11)72(113)89-58(38(5)6)71(112)91-60(40(8)13-2)73(114)92-61(42(10)96)69(110)80-34-54(98)93-25-14-17-50(93)66(107)86-48(29-43-31-77-35-81-43)65(106)84-46(20-22-55(99)100)64(105)85-47(75(116)117)21-23-56(101)102/h31-32,35-42,45-52,57-61,96H,12-30,33-34,76H2,1-11H3,(H,77,81)(H,78,82)(H,79,103)(H,80,110)(H,83,104)(H,84,106)(H,85,105)(H,86,107)(H,87,108)(H,88,109)(H,89,113)(H,90,111)(H,91,112)(H,92,114)(H,99,100)(H,101,102)(H,116,117)/t39-,40-,41-,42+,45-,46-,47-,48-,49-,50-,51-,52-,57-,58-,59-,60-,61-/m0/s1
General tips For obtaining a higher solubility , please warm the tube at 37 ℃ and shake it in the ultrasonic bath for a while.Stock solution can be stored below -20℃ for several months.
We recommend that you prepare and use the solution on the same day. However, if the test schedule requires, the stock solutions can be prepared in advance, and the stock solution must be sealed and stored below -20℃. In general, the stock solution can be kept for several months.
Before use, we recommend that you leave the vial at room temperature for at least an hour before opening it.
About Packaging 1. The packaging of the product may be reversed during transportation, cause the high purity compounds to adhere to the neck or cap of the vial.Take the vail out of its packaging and shake gently until the compounds fall to the bottom of the vial.
2. For liquid products, please centrifuge at 500xg to gather the liquid to the bottom of the vial.
3. Try to avoid loss or contamination during the experiment.
Shipping Condition Packaging according to customer requirements(5mg, 10mg, 20mg and more). Ship via FedEx, DHL, UPS, EMS or other couriers with RT, or blue ice upon request.

Biological Activity of NFAT Inhibitor

DescriptionSelective inhibitor of calcineurin-mediated dephosphorylation of nuclear factor of activated T cells (NFAT). Does not disrupt other calcineurin-dependent pathways. Inhibits NFAT activation and NFAT-dependent expression of endogenous cytokine genes in T cells.

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Background on NFAT Inhibitor

The nuclear factor of activated T cells (NFAT) is a member of the REL family of transcription factors that is involved in regulating transcription of proinflammatory genes, including IL-2 and TNF-α. Calcineurin-mediated dephosphorylation promotes translocation of NFAT proteins into the nucleus, where they bind specific elements within target gene promoters, in many cases through association with other transcription factors such as AP-1, NFκB, MEF-2, and PPARγ. Molecules that interfere with this signaling pathway have potential to be effective in regulating immunosuppressive and anti-inflammatory responses. NFAT inhibitor is a cell-permeable compound that selectively inhibits calcineurin-mediated dephosphorylation of NFAT. At 100 μM, this inhibitor effectively blocks calcineurin binding to NFAT without disrupting other calcineurin-dependent pathways, unlike the immunosuppressants cyclosporin A and FK506 (Item No. 10007965) which indiscriminately block all calcineurin phosphatase activity. NFAT inhibitor can disrupt NFAT-dependent expression of IL-2 and TNF-α when transfected in Jurak T cells and can prevent the activation and proliferation of T cells both in vitro (~ 43% at 1 µM using mixed lymphocyte cultures) and in vivo (10 mg/kg using C3H/HeN mice).

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References on NFAT Inhibitor

Protein kinase C inhibitor, GF109203X attenuates osteoclastogenesis, bone resorption and RANKL-induced NF-kappaB and NFAT activity.[Pubmed:25363829]

J Cell Physiol. 2015 Jun;230(6):1235-42.

Osteolytic bone diseases are characterized by excessive osteoclast formation and activation. Protein kinase C (PKC)-dependent pathways regulate cell growth, differentiation and apoptosis in many cellular systems, and have been implicated in cancer development and osteoclast formation. A number of PKC inhibitors with anti-cancer properties have been developed, but whether they might also influence osteolysis (a common complication of bone invading cancers) is unclear. We studied the effects of the PKC inhibitor compound, GF109203X on osteoclast formation and activity, processes driven by receptor activator of NFkappaB ligand (RANKL). We found that GF109203X strongly and dose dependently suppresses osteoclastogenesis and osteoclast activity in RANKL-treated primary mouse bone marrow cells. Consistent with this GF109203X reduced expression of key osteoclastic genes, including cathepsin K, calcitonin receptor, tartrate resistant acid phosphatase (TRAP) and the proton pump subunit V-ATPase-d2 in RANKL-treated primary mouse bone marrow cells. Expression of these proteins is dependent upon RANKL-induced NF-kappaB and NFAT transcription factor actions; both were reduced in osteoclast progenitor populations by GF109203X treatment, notably NFATc1 levels. Furthermore, we showed that GF109203X inhibits RANKL-induced calcium oscillation. Together, this study shows GF109203X may block osteoclast functions, suggesting that pharmacological blockade of PKC-dependent pathways has therapeutic potential in osteolytic diseases.

Hyperphosphate-Induced Myocardial Hypertrophy through the GATA-4/NFAT-3 Signaling Pathway Is Attenuated by ERK Inhibitor Treatment.[Pubmed:25999956]

Cardiorenal Med. 2015 Apr;5(2):79-88.

BACKGROUND/AIMS: Numerous epidemiological studies have associated elevated serum phosphorus levels with cardiovascular disease and the risk of death in the general population as well as in chronic kidney disease (CKD) and dialysis patients. In this study, we explored whether elevated phosphate conditions induce cardiac hypertrophy and attempted to identify the molecular and cellular mechanisms in the hypertrophic response. METHODS: H9c2 myocardial cells were incubated in high-phosphate conditions to induce hypertrophy. Pathological hypertrophic responses were measured in terms of cell size, arrangement of actin filaments, and hypertrophy markers such as atrial natriuretic peptide (ANP) and B-type natriuretic peptide (BNP) in myocardial cells. Several transcriptional factors involved in cardiac hypertrophy development were measured to investigate the molecular pathways involved in elevated phosphate-induced cardiac hypertrophy. RESULTS: High-phosphate conditions induced cellular hypertrophy, marked by increased cell size, reorganization of actin filaments, and upregulation of both ANP and BNP in H9c2 cells. Both upstream calcineurin and downstream transcription factors, including GATA-4 and NFAT-3, were significantly increased under hyperphosphate conditions. Moreover, both MEK1/2 and ERK1/2 expression increased significantly, and cellular hypertrophy was markedly attenuated by U0126, an ERK1/2 inhibitor. CONCLUSIONS: These results suggest that hyperphosphate conditions induce myocardial hypertrophy through the ERK signaling pathway in H9c2 cells. Our findings provide a link between the hyperphosphate-induced response and the ERK/NFAT-3 signaling pathway that mediates the development of cardiac hypertrophy. In view of the potent and selective activity of the ERK inhibitor U0126, this agent warrants further investigation as a candidate for preventing hyperphosphate-induced cardiac hypertrophy in CKD and dialysis patients.

NFAT inhibitor tributylhexadecylphosphoniumbromide, ameliorates high fructose induced insulin resistance and nephropathy.[Pubmed:26358169]

Chem Biol Interact. 2015 Oct 5;240:268-77.

High fructose diet (HFrD)-induced insulin resistance (IR) has been reported to be associated with an increase in albuminuria, glomerular hypertrophy and inflammation in kidney. However, the molecular mechanisms associated with high fructose-induced IR and renal dysfunction are still unclear. In the present study, we have investigated the role of nuclear factor of activated T-cell (NFAT) and its inhibitor, Tributylhexadecylphosphoniumbromide (THPB) in high fructose-induced IR and renal injury. NFAT inhibition by THPB treatment significantly improved HFrD-induced insulin resistance. Treatment with THPB markedly reduced high fructose diet-induced protein expression of NFATc4, PTEN and also alleviated expression of inflammatory markers in kidneys of HFrD rats. Further, THPB treatment not only improved acute ANG II responses but also repressed the processes of renal fibrosis, ECM accumulation, foot process effacement and renal apoptosis in HFrD rats. Taken together, we for the first time provide evidence that HFrD -induced insulin resistance and renal injury is associated with dysregulated NFATc4/PTEN signalling and THPB prevents this dysregulation through inhibition of NFATc4. Thus, targeting NFATc4 can be a novel therapeutic approach for preventing HFrD induced- IR and renal injury.

Structure-based optimization of a peptidyl inhibitor against calcineurin-nuclear factor of activated T cell (NFAT) interaction.[Pubmed:25162754]

J Med Chem. 2014 Sep 25;57(18):7792-7.

Calcineurin inhibitors such as cyclosporine A and FK506 are effective immunosuppressants but produce severe side effects. Rational modification of a previously reported peptide inhibitor, GPHPVIVITGPHEE (KD approximately 500 nM), by replacing the two valine residues with tert-leucine and the C-terminal proline with a cis-proline analogue, gave an improved inhibitor ZIZIT-cisPro, which binds to calcineurin with a KD value of 2.6 nM and is more resistant to proteolysis.

Microglial phenotype is regulated by activity of the transcription factor, NFAT (nuclear factor of activated T cells).[Pubmed:20631193]

J Neurosci. 2010 Jul 14;30(28):9641-6.

The transcription factor family, nuclear factor of activated T cells (NFAT), regulates immune cell phenotype. Four different calcium/calmodulin-regulated isoforms have been identified in the periphery, but isoform expression in microglia, the resident immune cells of the CNS, has not been fully defined. In this study microglial NFAT isoform expression and involvement in regulating inflammatory responses in murine primary microglia culture was examined. Western blot analysis demonstrated robust detection of NFATc1 and c2 isoforms in microglia. Electrophoretic mobility shift assays demonstrated increased NFAT-DNA binding from nuclear extracts of lipopolysaccharide (LPS) stimulated microglia. Moreover, LPS-stimulated microglia behaved similarly to T cell receptor agonist antibody-stimulated Jurkat cells demonstrating a transient increase in NFAT-driven luciferase reporter gene expression. LPS-induced NFAT-luciferase activity in microglia was attenuated by pretreatment with tat-VIVIT, a cell-permeable NFAT Inhibitory peptide. Furthermore, LPS-mediated secretion of microglial cytokines, TNF-alpha and MCP-1, was decreased by treatment with tat-VIVIT but not with tat-VEET, a negative control peptide. These results demonstrate that NFAT plays a role in regulating proinflammatory responses in cultured murine microglia.

Affinity-driven peptide selection of an NFAT inhibitor more selective than cyclosporin A.[Pubmed:10497131]

Science. 1999 Sep 24;285(5436):2129-33.

The flow of information from calcium-mobilizing receptors to nuclear factor of activated T cells (NFAT)-dependent genes is critically dependent on interaction between the phosphatase calcineurin and the transcription factor NFAT. A high-affinity calcineurin-binding peptide was selected from combinatorial peptide libraries based on the calcineurin docking motif of NFAT. This peptide potently inhibited NFAT activation and NFAT-dependent expression of endogenous cytokine genes in T cells, without affecting the expression of other cytokines that require calcineurin but not NFAT. Substitution of the optimized peptide sequence into the natural calcineurin docking site increased the calcineurin responsiveness of NFAT. Compounds that interfere selectively with the calcineurin-NFAT interaction without affecting calcineurin phosphatase activity may be useful as therapeutic agents that are less toxic than current drugs.

Description

Inhibitor of calcineurin-mediated NFAT activation,NFAT Inhibitor is a selective inhibitor of calcineurin-mediated dephosphorylation of nuclear factor of activated T cells (NFAT).

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