ST 2825 |
| Catalog No.GC11435 |
Products are for research use only. Not for human use. We do not sell to patients.
Cas No.: 894787-30-5
Sample solution is provided at 25 µL, 10mM.
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ST 2825 is a specific inhibitor of MyD88 dimerization [1].
ST 2825 is a synthetic compound which mimics the structure of the heptapeptide in the BB-loop of the MyD88-TIR domain and interferes the homodimerization of MyD88. ST 2825 was proved to specifically inhibit the homodimerization of MyD88 TIR domains without affecting the homodimerization of death domains. In HEK293T cells transfected with Flag-MyD88 and Myc-MyD88, ST 2825 inhibited the interaction of the two MyD88 by 80% at the concentration of 10 μM. This inhibition resulted in the subsequent interference of the IRAK1 and IRAK4 recruitment. Besides that, administration of ST 2825 significantly inhibited the IL-6 production stimulated by IL-1β at doses of 100 and 200 mg/kg in mice. Furthermore, 8 μM ST 2825 completely blocked the TLR9-induced B cell proliferation. ST2825 also suppressed the generation of plasma cells induced by CpG dose-dependently [1].
References:
[1] Loiarro M, Capolunghi F, Fantò N, et al. Pivotal Advance: Inhibition of MyD88 dimerization and recruitment of IRAK1 and IRAK4 by a novel peptidomimetic compound. Journal of leukocyte biology, 2007, 82(4): 801-810.
| Cell experiment: | |
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Cell lines |
HEK 293T and HeLa cell [1], B cells and plasmacytoid dendritic cells [1] |
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Preparation method |
The solubility of this compound in DMSO is >10 mM. General tips for obtaining a higher concentration: Please warm the tube at 37 °C for 10 minutes and/or shake it in the ultrasonic bath for a while.Stock solution can be stored below -20°C for several months. |
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Reaction Conditions |
6-7 h (HEK 293T cell), 15 min (HeLa cell), 5 days (B cell culture) [1] |
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Applications |
In HEK293T cells, ST2825 specifically inhibited homodimerization of MyD88 TIR domains with 40% inhibition of dimerization at 5 μM and 80% inhibition at 10 μM. This effect was specific for homodimerization of the TIR domains and did not affect homodimerization of the death domains. Moreover, ST2825 interfered with recruitment of IRAK1 and IRAK4 by MyD88, causing inhibition of IL-1-mediated activation of NF-κB transcriptional activity [1]. B cell proliferation and differentiation into plasma cells in response to CpG-induced activation of TLR9 were also suppressed by ST2825 (> 8 μM). These results showed that ST2825 blocked IL-1R/TLR signaling by interfering with MyD88 homodimerization and suggested that it may have therapeutic potential in treatment of chronic inflammatory diseases [1]. TLR9-induced plasma cell (PC) generation was blocked by ST2825 in Peripheral blood mononuclear cells from SLE patients [3]. |
| Animal experiment: | |
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Animal models |
C57BL female mice [1] |
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Dosage form |
Orally taken at 100 or 200 mg/kg/day [1]; injection at 25 mg/kg/day [2] |
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Preparation method |
ST2825 dissolved in 0.5% carboxymethylcellulose [1] |
|
Applications |
IL-1 beta-induced production of IL-6 was dose-dependently inhibited by ST2825 (100 or 200mg/kg daily) in treated mice [1]. In a murine model of non-reperfused acute myocardial infarction，ST2825 (25 mg/kg) protected left ventricular from dilatation and hypertrophy. No measurable reduction in infarct size was found [2]. |
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Other notes |
Please test the solubility of all compounds indoor, and the actual solubility may slightly differ with the theoretical value. This is caused by an experimental system error and it is normal. |
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References: [1]. Loiarro M, Capolunghi F, Fantò N et al. Pivotal advance: inhibition of MyD88 dimerization and recruitment of IRAK1 and IRAK4 by a novel peptidomimetic compound. Journal of Leukocyte Biology (2007), 82(4), 801-810. [2]. Van Tassell BW, Seropian IM, Toldo S et al. Pharmacologic Inhibition of Myeloid Differentiation Factor 88 (MyD88) Prevents Left Ventricular Dilation and Hypertrophy After Experimental Acute Myocardial Infarction in the Mouse. Journal of Cardiovascular Pharmacology (2010), 55(4), 385-390. [3]. Capolunghi F1, Rosado MM, Cascioli S et al., Pharmacological inhibition of TLR9 activation blocks autoantibody production in human B cells from SLE patients. Rheumatology (Oxford). 2010 Dec;49(12):2281-9. |
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| Cas No. | 894787-30-5 | SDF | |
| Chemical Name | (4R,7R,8aR)-1'-[2-[4-[[2-(2,4-dichlorophenoxy)acetyl]amino]phenyl]acetyl]-6-oxospiro[3,4,8,8a-tetrahydro-2H-pyrrolo[2,1-b][1,3]thiazine-7,2'-pyrrolidine]-4-carboxamide | ||
| Canonical SMILES | C1CC2(CC3N(C2=O)C(CCS3)C(=O)N)N(C1)C(=O)CC4=CC=C(C=C4)NC(=O)COC5=C(C=C(C=C5)Cl)Cl | ||
| Formula | C27H28Cl2N4O5S | M.Wt | 591.51 |
| Solubility | DMSO : 100 mg/mL (169.06 mM; Need ultrasonic) | Storage | Store at -20°C |
| General tips | Please select the appropriate solvent to prepare the stock solution according to the
solubility of the product in different solvents; once the solution is prepared, please store it in
separate packages to avoid product failure caused by repeated freezing and thawing.Storage method
and period of the stock solution: When stored at -80°C, please use it within 6 months; when stored
at -20°C, please use it within 1 month. To increase solubility, heat the tube to 37°C and then oscillate in an ultrasonic bath for some time. |
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| Shipping Condition | Evaluation sample solution: shipped with blue ice. All other sizes available: with RT, or with Blue Ice upon request. | ||
| Prepare stock solution | |||
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1 mg | 5 mg | 10 mg |
| 1 mM | 1.6906 mL | 8.4529 mL | 16.9059 mL |
| 5 mM | 0.3381 mL | 1.6906 mL | 3.3812 mL |
| 10 mM | 0.1691 mL | 0.8453 mL | 1.6906 mL |
Step 1: Enter information below (Recommended: An additional animal making an allowance for loss during the experiment)
g
μL
Step 2: Enter the in vivo formulation (This is only the calculator, not formulation. Please contact us first if there is no in vivo formulation at the solubility Section.)
Calculation results:
Working concentration: mg/ml;
Method for preparing DMSO master liquid: mg drug pre-dissolved in μL DMSO ( Master liquid concentration mg/mL, Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug. )
Method for preparing in vivo formulation: Take μL DMSO master liquid, next addμL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O, mix and clarify.
Method for preparing in vivo formulation: Take μL DMSO master liquid, next add μL Corn oil, mix and clarify.
Note: 1. Please make sure the liquid is clear before adding the next solvent.
2. Be sure to add the solvent(s) in order. You must ensure that the solution obtained, in the previous addition, is a clear solution before proceeding to add the next solvent. Physical methods such as vortex, ultrasound or hot water bath can be used to aid dissolving.
3. All of the above co-solvents are available for purchase on the GlpBio website.
Quality Control & SDS
- View current batch:
- Purity: >99.50%
- COA (Certificate Of Analysis)
- SDS (Safety Data Sheet)
- Datasheet
Average Rating: 5 (Based on Reviews and 30 reference(s) in Google Scholar.)
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