2. Immunology/Inflammation
  3. Toll-like Receptor (TLR)
  4. CU-CPT 4a

CU-CPT 4a  (Synonyms: TLR3-IN-1)

Cat. No.: HY-108473 Purity: 99.34%
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CU-CPT 4a (TLR3-IN-1) is a potent, highly selective TLR3 signaling inhibitor. CU-CPT 4a represses the expression of downstream signaling pathways mediated by the TLR3/dsRNA complex, including TNF-α and IL-1β.

For research use only. We do not sell to patients.

CU-CPT 4a Chemical Structure

CU-CPT 4a Chemical Structure

CAS No. : 1279713-77-7

Size Price Stock Quantity
Free Sample (0.1 - 0.5 mg)   Apply Now  
Solid + Solvent (Highly Recommended)
10 mM * 1 mL in DMSO
ready for reconstitution
 USD 157 In-stock
Solution
10 mM * 1 mL in DMSO USD 157 In-stock
Solid
5 mg USD 143 In-stock
10 mg USD 242 In-stock
25 mg USD 506 In-stock
50 mg USD 858 In-stock
100 mg USD 1386 In-stock
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500 mg   Get quote  

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Customer Review

Based on 1 publication(s) in Google Scholar

CU-CPT 4a Related Antibodies

Top Publications Citing Use of Products

1 Publications Citing Use of MCE CU-CPT 4a

View All Toll-like Receptor (TLR) Isoform Specific Products:

View All Isoforms
TLR3 TLR8 TLR9 TLR2 TLR4 TLR7 TLR1 TLR6

  • Biological Activity

  • Protocol

  • Purity & Documentation

  • References

  • Customer Review

Description

CU-CPT 4a (TLR3-IN-1) is a potent, highly selective TLR3 signaling inhibitor. CU-CPT 4a represses the expression of downstream signaling pathways mediated by the TLR3/dsRNA complex, including TNF-α and IL-1β[1].

IC50 & Target[1]

TLR3

3.44 μM (IC50, in RAW 264.7 cells)

In Vitro

CU-CPT 4a shows dose-dependent inhibitory effects blocking Poly (I:C)-induced TLR3 activation with an IC50 of 3.44 μM[1].
CU-CPT 4a competes with dsRNA for binding to TLR3 with a Ki of 2.96 μM[1].

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

CU-CPT 4a Related Antibodies
Molecular Weight

377.82

Formula

C18H13ClFNO3S
CAS No.
Appearance

Solid

Color

White to off-white

SMILES

O=C(O)[C@@H](CC1=CC=CC=C1)NC(C2=C(Cl)C3=CC=C(F)C=C3S2)=O
Shipping

Room temperature in continental US; may vary elsewhere.
Storage
Powder -20°C 3 years
4°C 2 years
In solvent -80°C 6 months
-20°C 1 month
Solvent & Solubility
In Vitro: 

DMSO : 100 mg/mL (264.68 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 2.6468 mL 13.2338 mL 26.4676 mL
5 mM 0.5294 mL 2.6468 mL 5.2935 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. When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.

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  • Dilution Calculator

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

Mass
=
Concentration
×
Volume
×
Molecular Weight *

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

This equation is commonly abbreviated as: C1V1 = C2V2

Concentration (start)

C1

×
Volume (start)

V1

=
Concentration (final)

C2

×
Volume (final)

V2

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 (6.62 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% Corn Oil

    Solubility: ≥ 2.5 mg/mL (6.62 mM); Clear solution

    This protocol yields a clear solution of ≥ 2.5 mg/mL (saturation unknown). If the continuous dosing period exceeds half a month, please choose this protocol carefully.

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (25.0 mg/mL) to 900 μL Corn oil, and mix evenly.

In Vivo Dissolution Calculator
Please enter the basic information of animal experiments:

Dosage

mg/kg

Animal weight
(per animal)

g

Dosing volume
(per animal)

μL

Number of animals

Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.
Please enter your animal formula composition:
%
DMSO +
% 
+
%
Tween-80 +
%
Saline
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).
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
Cell Assay
[1]

RAW 264.7 cells are planted in 6-well plates in duplicate at 1,000,000 cells per well with 3 mL of medium (RPMI 1640 medium, supplemented with 10% FBS, Penicillin (100 U/mL) and Streptomycin (100 mg/mL)) and grown for 24 h at 37°C in a 5% CO2 humidified incubator. After 24 h, non-adherent cells and media are removed and replaced with fresh RPMI 1640 medium (3 mL/well). Two wells of adherent macrophages are treated with Poly (I:C) (15 μg/mL). One of the two wells is treated with 27 μM CU CPT 4a. One additional well is treated with only CU CPT 4a (27 μM) only. Plates are then incubated for an additional 24 h. After removal of the medium, cells are washed with PBS (3×1 mL), the 6 well plate is put on ice, then 500 μL of lysis buffer is added in each well (Lysis Buffer: 120 μL 0.5M EDTA; 12 mL Mammalian Protein Extraction Reagent, 100 μL cocktail, 0.36 mL NaCl (5 M, aqueous) ). After 5 min, the mixture is transferred into corresponding 1.5 mL tube, spun for 20 min at 13.2 K rpm in a cold room. Approximately 400 μL of supernatant are collected into new tubes, frozen at -80°C until ready for cytokine measurement[1].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.
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. 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 2.6468 mL 13.2338 mL 26.4676 mL 66.1691 mL
5 mM 0.5294 mL 2.6468 mL 5.2935 mL 13.2338 mL
10 mM 0.2647 mL 1.3234 mL 2.6468 mL 6.6169 mL
15 mM 0.1765 mL 0.8823 mL 1.7645 mL 4.4113 mL
20 mM 0.1323 mL 0.6617 mL 1.3234 mL 3.3085 mL
25 mM 0.1059 mL 0.5294 mL 1.0587 mL 2.6468 mL
30 mM 0.0882 mL 0.4411 mL 0.8823 mL 2.2056 mL
40 mM 0.0662 mL 0.3308 mL 0.6617 mL 1.6542 mL
50 mM 0.0529 mL 0.2647 mL 0.5294 mL 1.3234 mL
60 mM 0.0441 mL 0.2206 mL 0.4411 mL 1.1028 mL
80 mM 0.0331 mL 0.1654 mL 0.3308 mL 0.8271 mL
100 mM 0.0265 mL 0.1323 mL 0.2647 mL 0.6617 mL
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CU-CPT 4a 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:

CU-CPT 4a1279713-77-7TLR3-IN-1Toll-like Receptor (TLR)TLR3/dsRNA complexTNF-αIL-1βprotein-RNA interactionInhibitorinhibitorinhibit

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