1. Membrane Transporter/Ion Channel Neuronal Signaling
  2. Calcium Channel
  3. TPC2-A1-N

TPC2-A1-N is a powerful and Ca2+-permeable agonist of two pore channel 2 (TPC2), which plays its role by mimicking the physiological actions of NAADP. TPC2-A1-P reproducibly evokes significant Ca2+ responses from TPC2 (EC50=7.8 μM), and the effect can be blocked by several TPC blockers. TPC2-A1-N can be used to probe different functions of TPC2 channels in intact cells.

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TPC2-A1-N Chemical Structure

TPC2-A1-N Chemical Structure

CAS No. : 136186-07-7

Size Price Stock Quantity
Solid + Solvent
10 mM * 1 mL in DMSO
ready for reconstitution
USD 440 In-stock
Solution
10 mM * 1 mL in DMSO USD 440 In-stock
Solid
5 mg USD 400 In-stock
10 mg USD 680 In-stock
25 mg USD 1350 In-stock
50 mg USD 2200 In-stock
100 mg USD 3400 In-stock
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Based on 2 publication(s) in Google Scholar

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Description

TPC2-A1-N is a powerful and Ca2+-permeable agonist of two pore channel 2 (TPC2), which plays its role by mimicking the physiological actions of NAADP. TPC2-A1-P reproducibly evokes significant Ca2+ responses from TPC2 (EC50=7.8 μM), and the effect can be blocked by several TPC blockers. TPC2-A1-N can be used to probe different functions of TPC2 channels in intact cells[1][2].

IC50 & Target

EC50: 10.5 μM (Ca2+ current response from TPC2)[1]

In Vitro

Two-pore channels (TPC1-3) are ancient members of the voltage-gated ion channel superfamily. TPCs are expressed throughout the endo-lysosomal system and regulates the trafficking of various cargoes.
TPC2 can mediate different physiological and possibly pathophysiological effects depending on how it is activated. The ion selectivity of TPC2 is not fixed but rather agonist-dependent. TPC2 is a unique example of an ion channel that conducts different ions in response to different activating ligands.
TPC2-A1-N (10 μM) reproducibly evokes Ca2+ signals, and TPC2-A1-N response reachs its plateau faster than TPC2-A1-P. The EC50 in full concentration-effect relationships for the plateau response is 7.8 μM for TPC2-A1-N in a cell line stably expressing TPC2L11A/L12A.
TPC2-A1-N (10 μM) evokes Ca2+ influx through the TPC2 pore evokes Ca2+ signals in cells expressing TPC2L11A/L12A but not TPC2L11A/L12A/L265P. Additionally, the responses to TPC2-A1-N can be selectively blocked by the identified TPC2 blockers Tetrandrine (HY-13764, Tet), Raloxifene (HY-13738, Ral), and Fluphenazine (HY-A0081, Flu) by removal of extracellular Ca2+[1].
In endo-lysosomal patch-clamp experiments, TPC2-A1-N (30 μM) elicits currents using Na+ as the major permeantion, in vacuolin-enlarged endo-lysosomes isolated from isolated from HEK293 cells transiently expressing human TPC2 (hTPC2) but not in cells expressing TPC1[1].
In endo-lysosomal patch-clamp experiments, TPC2-A1-N (30 μM) induces larger currents in endo-lysosomes isolated from cells expressing a gain-of-function variant of TPC2 (TPC2M484L) compared to the wild-type isoform, and exhibits an EC50 value of 0.6 μM for TPC2-A1-N[1].

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

Molecular Weight

401.17

Formula

C17H9Cl2F3N2O2

CAS No.
Appearance

Solid

Color

White to off-white

SMILES

O=C(NC1=CC=C(C(F)(F)F)C=C1)/C(C#N)=C(C2=CC(Cl)=CC(Cl)=C2)\O

Shipping

Room temperature in continental US; may vary elsewhere.

Storage
Powder -20°C 3 years
4°C 2 years
In solvent -80°C 2 years
-20°C 1 year
Solvent & Solubility
In Vitro: 

DMSO : 250 mg/mL (623.18 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 2.4927 mL 12.4635 mL 24.9271 mL
5 mM 0.4985 mL 2.4927 mL 4.9854 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, 2 years; -20°C, 1 year. When stored at -80°C, please use it within 2 years. When stored at -20°C, please use it within 1 year.

  • Molarity Calculator

  • Dilution Calculator

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

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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: ≥ 2.08 mg/mL (5.18 mM); Clear solution

    This protocol yields a clear solution of ≥ 2.08 mg/mL (saturation unknown).

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (20.8 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: ≥ 2.08 mg/mL (5.18 mM); Clear solution

    This protocol yields a clear solution of ≥ 2.08 mg/mL (saturation unknown).

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (20.8 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
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Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.
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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).
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, 2 years; -20°C, 1 year. When stored at -80°C, please use it within 2 years. When stored at -20°C, please use it within 1 year.

Optional Solvent Concentration Solvent Mass 1 mg 5 mg 10 mg 25 mg
DMSO 1 mM 2.4927 mL 12.4635 mL 24.9271 mL 62.3177 mL
5 mM 0.4985 mL 2.4927 mL 4.9854 mL 12.4635 mL
10 mM 0.2493 mL 1.2464 mL 2.4927 mL 6.2318 mL
15 mM 0.1662 mL 0.8309 mL 1.6618 mL 4.1545 mL
20 mM 0.1246 mL 0.6232 mL 1.2464 mL 3.1159 mL
25 mM 0.0997 mL 0.4985 mL 0.9971 mL 2.4927 mL
30 mM 0.0831 mL 0.4155 mL 0.8309 mL 2.0773 mL
40 mM 0.0623 mL 0.3116 mL 0.6232 mL 1.5579 mL
50 mM 0.0499 mL 0.2493 mL 0.4985 mL 1.2464 mL
60 mM 0.0415 mL 0.2077 mL 0.4155 mL 1.0386 mL
80 mM 0.0312 mL 0.1558 mL 0.3116 mL 0.7790 mL
100 mM 0.0249 mL 0.1246 mL 0.2493 mL 0.6232 mL
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TPC2-A1-N
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