2. Protein Tyrosine Kinase/RTK
  3. Syk
  4. ER-27319

ER-27319, an acridone derivative, is a potent and selective SYK inhibitor, and inhibits the tyrosine phosphorylation of SYK and its activity. ER-27319 inhibits the release of antigen-induced allergic mediators from human and rat mast cells with an IC50 of 10 μM and can be used for study in allergic diseases.

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ER-27319 Chemical Structure

ER-27319 Chemical Structure

CAS No. : 201010-95-9

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Based on 1 publication(s) in Google Scholar

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ER-27319 Related Antibodies

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Description

ER-27319, an acridone derivative, is a potent and selective SYK inhibitor, and inhibits the tyrosine phosphorylation of SYK and its activity. ER-27319 inhibits the release of antigen-induced allergic mediators from human and rat mast cells with an IC50 of 10 μM and can be used for study in allergic diseases[1][2].

IC50 & Target

10 μM (Syk) in human and rat mast cells[1]
In Vitro

ER-27319 (24 h) inhibits antigen-induced generation of inositol phosphates, release of arachidonic acid, and secretion of histamine and tumor necrosis factor α in RBL-2H3 cells, rat peritoneal and human cultured mast cells, and with IC50 value of 10 μM, approximately[1].
ER-27319 (10-30 μM, 10 min) selectivity inhibits the tyrosine phosphorylation of SYK induced by the phosphorylated immunoreceptor tyrosine-based activation motif of the FcεRI γ in RBL-2H3 cells[1].
ER-27319 (up to 100 μM, 60 min) does not inhibit the the tyrosine phosphorylation of ZAP-70 in response to anti-CD3 stimulation in the Jurkat cells[1].
ER-27319 (100 μM, 10 min) inhibits the tyrosine phosphorylation of two proteins (38, 70 kD) and decreases the tyrosine phosphorylation of the other two proteins (62, 80 kD) in anti-IgG stimulation Canine cutaneous mastocytoma-derived cells[2].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

ER-27319 Related Antibodies

Western Blot Analysis[1]

Cell Line: RBL-2H3 cells
Concentration: 10, 30 and 100 μM
Incubation Time: 10 min
Result: Inhibited the Tyrosine Phosphorylation of SYK in Mast Cells (the inhibition of 57% and 87% at 10 and 30 μM).
Inhibited the tyrosine phosphorylation of SYK induced by the phospho-γ ITAM of the FcεRI γ but not the tyrosine phosphorylation of Syk induced by the phospho-Ig β immunoreceptor tyrosine-based activation motif at 10 and 30 μM.
Had no effect on the Igβ immunoreceptor tyrosine-based activation motif-induced phosphorylation of SYK at 100 μM.

Western Blot Analysis[1]

Cell Line: Jurkat cells
Concentration: 3, 10, 30, 100 μM
Incubation Time: 10, 30, 60 min
Result: IDid not inhibit the the tyrosine phosphorylation of ZAP-70 in response to anti-CD3 stimulation.
Molecular Weight

370.40

Formula

C20H22N2O5
CAS No.
Unlabeled CAS

Appearance

Solid

Color

Light yellow to yellow

SMILES

O=C1C2=C(C=CC=C2)N(CCCN)C3=C(C)C(C)=CC=C13.O=C(O)C(O)=O
Shipping

Room temperature in continental US; may vary elsewhere.
Storage

4°C, sealed storage, away from moisture

*In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture)

Solvent & Solubility
In Vitro: 

DMSO : 50 mg/mL (134.99 mM; Need ultrasonic; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 2.6998 mL 13.4989 mL 26.9978 mL
5 mM 0.5400 mL 2.6998 mL 5.3996 mL
View the Complete Stock Solution Preparation Table

* Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.

  • Molarity Calculator

  • Dilution Calculator

Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)

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Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

This equation is commonly abbreviated as: C1V1 = C2V2

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In Vivo:

Select the appropriate dissolution method based on your experimental animal and administration route.

For the following dissolution methods, please ensure to first prepare a clear stock solution using an In Vitro approach and then sequentially add co-solvents:
To ensure reliable experimental results, the clarified stock solution can be appropriately stored based on storage conditions. As for the working solution for in vivo experiments, it is recommended to prepare freshly and use it on the same day.
The percentages shown for the solvents indicate their volumetric ratio in the final prepared solution. If precipitation or phase separation occurs during preparation, heat and/or sonication can be used to aid dissolution.

  • Protocol 1

    Add each solvent one by one:  10% DMSO    40% PEG300    5% Tween-80    45% Saline

    Solubility: ≥ 2.5 mg/mL (6.75 mM); Clear solution

    This protocol yields a clear solution of ≥ 2.5 mg/mL (saturation unknown).

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (25.0 mg/mL) to 400 μL PEG300, and mix evenly; then add 50 μL Tween-80 and mix evenly; then add 450 μL Saline to adjust the volume to 1 mL.

    Preparation of Saline: Dissolve 0.9 g sodium chloride in ddH₂O and dilute to 100 mL to obtain a clear Saline solution.
  • Protocol 2

    Add each solvent one by one:  10% DMSO    90% (20% SBE-β-CD in Saline)

    Solubility: ≥ 2.5 mg/mL (6.75 mM); Clear solution

    This protocol yields a clear solution of ≥ 2.5 mg/mL (saturation unknown).

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (25.0 mg/mL) to 900 μL 20% SBE-β-CD in Saline, and mix evenly.

    Preparation of 20% SBE-β-CD in Saline (4°C, storage for one week): 2 g SBE-β-CD powder is dissolved in 10 mL Saline, completely dissolve until clear.
In Vivo Dissolution Calculator
Please enter the basic information of animal experiments:

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Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.
Please enter your animal formula composition:
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Recommended: Keep the proportion of DMSO in working solution below 2% if your animal is weak.
The co-solvents required include: DMSO, . All of co-solvents are available by MedChemExpress (MCE). , Tween 80. All of co-solvents are available by MedChemExpress (MCE).
Calculation results:
Working solution concentration: mg/mL
Method for preparing stock solution: mg drug dissolved in μL  DMSO (Stock solution concentration: mg/mL).

*In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture)

The concentration of the stock solution you require exceeds the measured solubility. The following solution is for reference only. If necessary, please contact MedChemExpress (MCE).
Method for preparing in vivo working solution for animal experiments: Take μL DMSO stock solution, add μL . μL , mix evenly, next add μL Tween 80, mix evenly, then add μL Saline.
 If the continuous dosing period exceeds half a month, please choose this protocol carefully.
Please ensure that the stock solution in the first step is dissolved to a clear state, and add co-solvents in sequence. You can use ultrasonic heating (ultrasonic cleaner, recommended frequency 20-40 kHz), vortexing, etc. to assist dissolution.
Purity & Documentation
References

Complete Stock Solution Preparation Table

* Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.

Optional Solvent Concentration Solvent Mass 1 mg 5 mg 10 mg 25 mg
DMSO 1 mM 2.6998 mL 13.4989 mL 26.9978 mL 67.4946 mL
5 mM 0.5400 mL 2.6998 mL 5.3996 mL 13.4989 mL
10 mM 0.2700 mL 1.3499 mL 2.6998 mL 6.7495 mL
15 mM 0.1800 mL 0.8999 mL 1.7999 mL 4.4996 mL
20 mM 0.1350 mL 0.6749 mL 1.3499 mL 3.3747 mL
25 mM 0.1080 mL 0.5400 mL 1.0799 mL 2.6998 mL
30 mM 0.0900 mL 0.4500 mL 0.8999 mL 2.2498 mL
40 mM 0.0675 mL 0.3375 mL 0.6749 mL 1.6874 mL
50 mM 0.0540 mL 0.2700 mL 0.5400 mL 1.3499 mL
60 mM 0.0450 mL 0.2250 mL 0.4500 mL 1.1249 mL
80 mM 0.0337 mL 0.1687 mL 0.3375 mL 0.8437 mL
100 mM 0.0270 mL 0.1350 mL 0.2700 mL 0.6749 mL
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ER-27319 Related Classifications

Help & FAQs
  • Do most proteins show cross-species activity?

    Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

Keywords:

ER-27319201010-95-9ER27319ER 27319SykSpleen tyrosine kinaseRBL-2H3cultured human mast cellshuman peripheral B cellCanine cutaneous mastocytoma-derived cellsInhibitorinhibitorinhibit

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