2. Anti-infection
  3. Parasite
  4. Conoidin A

Conoidin A is a cell permeable inhibitor of T. gondii enzyme peroxiredoxin II (TgPrxII) with nematicidal properties. Conoidin A covalently binds to the peroxidatic Cys47 of TgPrxII, irreversibly inhibiting its hyperperoxidation activity with an IC50 of 23 µM. Conoidin A also inhibits hyperoxidation of mammalian PrxI and PrxII (but not PrxIII). Conoidin A has antioxidant, neuroprotective effects and can be used for the research of ischaemic heart disease.

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Conoidin A Chemical Structure

Conoidin A Chemical Structure

CAS No. : 18080-67-6

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Based on 1 publication(s) in Google Scholar

Conoidin A Related Antibodies

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Description

Conoidin A is a cell permeable inhibitor of T. gondii enzyme peroxiredoxin II (TgPrxII) with nematicidal properties. Conoidin A covalently binds to the peroxidatic Cys47 of TgPrxII, irreversibly inhibiting its hyperperoxidation activity with an IC50 of 23 µM. Conoidin A also inhibits hyperoxidation of mammalian PrxI and PrxII (but not PrxIII)[1][2]. Conoidin A has antioxidant, neuroprotective effects and can be used for the research of ischaemic heart disease[3].

IC50 & Target

Toxoplasma

 

Cellular Effect
Cell Line Type Value Description References
BALL-1 IC50
1.05 μM
Compound: Conoidin A
Cytotoxicity against human BALL-1 cells assessed as reduction in cell viability incubated for 24 hrs by WST-8 assay
Cytotoxicity against human BALL-1 cells assessed as reduction in cell viability incubated for 24 hrs by WST-8 assay
[PMID: 34015702]
In Vitro

Peroxiredoxins are a widely conserved family of enzymes that function in antioxidant defense and signal transduction. And the changes in PrxII expression are associated with a variety of human diseases, including cancer[1].
Conoidin A binds to the peroxidatic cysteine of TgPrxII, inhibiting its enzymatic activity in vitro. Conoidin A also shown to alkylate or crosslink catalytic cysteines of wild type AcePrx-1 in Ancylostoma ceylanicum and human PrxII and PrxIV with similar efficiency. But it is ineffective to mitochondrial hPrxIII[2].
Conoidin A (5 µM) can inhibit the glucose oxidase-mediated hyperoxidation of mammalian peroxiredoxin I and II[2].

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

Conoidin A Related Antibodies
In Vivo

Conoidin A (intraperitoneal injection; 5 mg/kg; for three successive days before MI/R injury) blocks the effect of Luteolin (HY-N0162) on the ST‐segment elevation. Furthermore, an increase in the infarct size presented of the MI/R group can be reduced by Luteolin. But pre‐treatment with conoidin A abolishs the effect of Luteolin. Pre‐treatment with conoidin A also prevents Luteolin-reduced activities of CK‐MB, AST and LDH in vivo[3].

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

Animal Model: Rat myocardial I/R model[3]
Dosage: 5 mg/kg
Administration: Intraperitoneal injection; 5 mg/kg; for three successive days before MI/R injury
Result: Significantly reversed the antioxidative effect of Luteolin.
Impaired the protective effects of luteolin.
Molecular Weight

347.99

Formula

C10H8Br2N2O2
CAS No.
Appearance

Solid

Color

White to yellow

SMILES

[O-][N+]1=C(C(CBr)=[N+](C2=C1C=CC=C2)[O-])CBr
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 : 14.29 mg/mL (41.06 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 2.8736 mL 14.3682 mL 28.7365 mL
5 mM 0.5747 mL 2.8736 mL 5.7473 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.

  • Molarity Calculator

  • Dilution Calculator

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

Mass
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Concentration
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Volume
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Molecular Weight *

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

This equation is commonly abbreviated as: C1V1 = C2V2

Concentration (start)

C1

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Volume (start)

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C2

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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: ≥ 1.43 mg/mL (4.11 mM); Clear solution

    This protocol yields a clear solution of ≥ 1.43 mg/mL (saturation unknown).

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (14.3 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.
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

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 2.8736 mL 14.3682 mL 28.7365 mL 71.8411 mL
5 mM 0.5747 mL 2.8736 mL 5.7473 mL 14.3682 mL
10 mM 0.2874 mL 1.4368 mL 2.8736 mL 7.1841 mL
15 mM 0.1916 mL 0.9579 mL 1.9158 mL 4.7894 mL
20 mM 0.1437 mL 0.7184 mL 1.4368 mL 3.5921 mL
25 mM 0.1149 mL 0.5747 mL 1.1495 mL 2.8736 mL
30 mM 0.0958 mL 0.4789 mL 0.9579 mL 2.3947 mL
40 mM 0.0718 mL 0.3592 mL 0.7184 mL 1.7960 mL
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Conoidin A 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:

Conoidin A18080-67-6Parasitehyperperoxidationantioxidantneuroprotectiveischaemicheart diseaseantioxidativePeroxiredoxin IIInhibitorinhibitorinhibit

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