Home Transmembrane Transporters CFTR inhibitor CFTRinh-172

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CFTRinh-172 CFTR inhibitor

Cat.No.S7139

CFTRinh-172 (CFTR inhibitor 172) is a voltage-independent, selective CFTR inhibitor with Ki of 300 nM, showing no effects on MDR1, ATP-sensitive K+ channels, or a series of other transporters.
CFTRinh-172 CFTR inhibitor Chemical Structure

Chemical Structure

Molecular Weight: 409.4

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Quality Control

Cell Culture, Treatment & Working Concentration

Cell Lines Assay Type Concentration Incubation Time Formulation Activity Description PMID
rat FRT cells Function assay Inhibition of human wild type CFTR expressed in rat FRT cells assessed as chloride current by short-circuit current measurements, IC50=0.38 μM 18691893
Click to View More Cell Line Experimental Data

Chemical Information, Storage & Stability

Molecular Weight 409.4 Formula

C18H10F3NO3S2

 Storage (From the date of receipt)
CAS No. 307510-92-5 Download SDF Storage of Stock Solutions

Synonyms CFTR inhibitor 172 Smiles C1=CC(=CC(=C1)N2C(=O)C(=CC3=CC=C(C=C3)C(=O)O)SC2=S)C(F)(F)F

Solubility

In vitro
Batch:

DMSO : 82 mg/mL (200.29 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO.)

Water : Insoluble

Ethanol : Insoluble

Molarity Calculator

Mass Concentration Volume Molecular Weight

In vivo
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In vivo Formulation Calculator (Clear solution)

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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.

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Mechanism of Action

Targets/IC50/Ki
CFTR [1]
(in human airway cells)
300 nM(Ki)
In vitro

CFTRinh-172 dose- and time-dependently inhibits CFTR-mediated Cl- transportation, and effectively inhibits CFTR activation by multiple types of agonists or activators. [1] This compound, as a selective CFTR channel inhibitor, also completely abolishes the Cl− current in the rabbit acinar and duct cells of rabbit lacrimal gland. [2] It also induces ROS production, mitochondrial failure, and activation of the NF-κB signaling pathway, independently of CFTR inhibition. [3]
Kinase Assay
Screening procedures
Assays are done using a customized screening system consisting of a 3-meter robotic arm, CO2 incubator, plate washer, liquid-handling workstation, bar code reader, delidding station, and two FLUOstar fluorescence platereaders, each equipped with two syringe pumps and HQ500/20X (500 ± 10 nm) excitation and HQ535/30M (535 ± 15 nm) emission filters. The robotic system is integrated using SAMI version 3.3 software modified for two platereaders. Custom software is written in Microsoft VBA (Visual Basic for Applications) to compute base-line–subtracted, normalized fluorescence slopes (giving halide influx rates) from stored data files. The assay is set up by loading the incubator (37°C, 90% humidity, 5% CO2) with 40–60 96-well plates containing the FRT cells, and loading a carousel with 96-well plates containing test compounds and disposable plastic pipette tips. To initiate the assay, each well of a 96-well plate is washed three times in PBS (300 μl/wash), leaving 50 μL PBS. Ten microliters of a CFTR-activating cocktail (5 μM forskolin, 100 μM IBMX, 25 μM apigenin in PBS) is added, and after 5 minutes one test compound (0.5 μL of 1 mM DMSO solution) is added to each well to give 10 μM final concentration. After 10 minutes, 96-well plates are transferred to a platereader for fluorescence assay. Each well is assayed individually for CFTR-mediated I– transport by recording fluorescence continuously (200 ms per point) for 2 seconds (base line) and then for 12 seconds after rapid (<0.5 seconds) addition of 165 μL of isosmolar PBS in which 137 mM Cl– was replaced by I–.
In vivo

CFTRinh-172 (20 µg/6 h) completely abolishes the V. cholerae-induced intestinal fluid secretion without affecting V. cholerae growth in vivo. [4]
References

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