Lumacaftor (VX-809)

Synonyms: VRT 826809

Lumacaftor (VX-809, VRT 826809) acts to correct CFTR mutations common in cystic fibrosis by increasing mutant CFTR (F508del-CFTR) maturation,EC50 of 0.1 μM in fisher rat thyroid cells. Phase 3.

Lumacaftor (VX-809) Chemical Structure

Lumacaftor (VX-809) Chemical Structure

CAS No. 936727-05-8

Purity & Quality Control

Lumacaftor (VX-809) Related Products

Signaling Pathway

Cell Data

Cell Lines Assay Type Concentration Incubation Time Formulation Activity Description PMID
CFBE41o Corrector assay 24 hrs Corrector activity at CFTR F508-del mutant (unknown origin) expressed in human CFBE41o cells harboring HS-YFP preincubated for 24 hrs followed by forskolin/genistein stimulation for 30 mins by fluorescence assay, EC50 = 2.5704 μM. 29272749
FRT Corrector assay 25 mins Corrector activity at human CFTR F508 deletion mutant expressed in FRT cells incubated for 25 mins with forskolin by YFP-based fluorescence analysis relative to control, EC50 = 2.6 μM. 26561003
TC32 qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for TC32 cells 29435139
U-2 OS qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for U-2 OS cells 29435139
A673 qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for A673 cells 29435139
DAOY qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for DAOY cells 29435139
Saos-2 qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for Saos-2 cells 29435139
BT-37 qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for BT-37 cells 29435139
RD qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for RD cells 29435139
SK-N-SH qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for SK-N-SH cells 29435139
BT-12 qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for BT-12 cells 29435139
MG 63 (6-TG R) qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for MG 63 (6-TG R) cells 29435139
NB1643 qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for NB1643 cells 29435139
BT-12 qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Confirmatory screen for BT-12 cells 29435139
OHS-50 qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for OHS-50 cells 29435139
fibroblast cells qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for control Hh wild type fibroblast cells 29435139
Rh41 qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for Rh41 cells 29435139
Rh30 qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Confirmatory screen for Rh30 cells 29435139
U-2 OS qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Confirmatory screen for U-2 OS cells 29435139
Rh41 qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Confirmatory screen for Rh41 cells 29435139
RD qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Confirmatory screen for RD cells 29435139
SJ-GBM2 qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for SJ-GBM2 cells 29435139
SK-N-MC qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for SK-N-MC cells 29435139
NB-EBc1 qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for NB-EBc1 cells 29435139
LAN-5 qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for LAN-5 cells 29435139
Rh18 qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for Rh18 cells 29435139
CFBE41o Corrector assay 1 uM 24 hrs Corrector activity at CFTR F508-del mutant (unknown origin) expressed in human CFBE41o cells harboring HS-YFP assessed as increase in matured protein levels at cell surface at 1 uM after 24 hrs by electrophoretic mobility assay 29272749
HBE Corrector assay Corrector activity at CFTR F508del/F508del mutant in primary HBE cells assessed as increase in chloride ion current across apical membrane measured 18 to 24 hrs post compound treatment on basolateral side of cells in presence of channel potentiator GLPG18 29251932
CFBE41o Corrector assay Corrector activity at CFTR F508del mutant (unknown origin) expressed in human CFBE41o cells assessed as increase in fully glycosylated protein by western blot analysis 26041577
CFBE41o Corrector assay 1 uM 24 hrs Corrector activity at CFTR F508del mutant (unknown origin) expressed in human CFBE41o cells assessed as increase in size of cAMP-dependent current at 1 uM after 24 hrs measured at +100 mV by whole cell patch clamp assay 26041577
Click to View More Cell Line Experimental Data

Biological Activity

Description Lumacaftor (VX-809, VRT 826809) acts to correct CFTR mutations common in cystic fibrosis by increasing mutant CFTR (F508del-CFTR) maturation,EC50 of 0.1 μM in fisher rat thyroid cells. Phase 3.
Features Higher specificity and efficacy relative to other CFTR defect drugs.
Targets
F508del-CFTR [1]
(Fisher rat thyroid cells)
0.1 μM(EC50)
In vitro
In vitro

VX-809 acts at the level of the ER to allow a fraction of the F508del-CFTR to adopt a properly folded form, to exit the ER and mobilize to the cell surface for normal functioning. In Fischer rat thyroid (FRT) cells expressing F508del-CFTR, VX-809 treatment significantly improves F508del-CFTR maturation by 7.1 fold with an EC50 of 0.1 μM, and enhances F508del-CFTR-mediated chloride transport by approximately 5 fold with EC50 of 0.5 μM, while VRT-768 has higher EC50 values of 7.9 μM and 16 μM, respectively. In HEK-293 cells expressing F508del-CFTR, VX-809 (3 μM) treatment increases F508del-CFTR exit from the ER by 6 fold, reaching levels comparable to 34% of CFTR. In primary human bronchial epithelial (HBE) cells with F508del-CFTR mutation, VX-809 increases CFTR maturation and enhances chloride secretion with EC50 of 350 nM and 81 nM, respectively, more efficacious than Corr-4a and VRT-325. F508del-CFTR corrected by VX-809 exhibits single-channel open probability of 0.39 similar to normal CFTR of 0.40. Unlike VX-770, VX-809 is not a CFTR potentiator, as acute addition of VX-809 has no effect on F508del-CFTR function. In contrast to VRT-325 and Corr-4a, VX-809 does not improve the processing of the normal or mutant forms of hERG or P-gp, as well as other disease-causing mislocalized proteins, including α1-antitrypsin Z mutant (E342K-α1-AT) or N370S-β-glucosidase, suggesting that VX-809 is specific for CFTR. VX-809 in combination with VRT-325 or Corr-4a has additive effect on CFTR-mediated chloride transport in cultured F508del-HBE. [1]

Kinase Assay F508del-CFTR maturation
Fischer rat thyroid (FRT) cells stably expressing F508del-CFTR are treated with increasing concentrations of VX-809 for 48 hours. After incubation, cells are harvested in ice-cold D-PBS solution (without calcium and magnesium) and pelleted at 1,000 × g at 4 °C. Cell pellets are lysed in 1% Nonidet P-40, 0.5% sodium deoxycholate, 200 mM NaCl, 10 mM Tris, pH 7.8, and 1 mM EDTA plus protease inhibitor mixture (1:250) for 30 minutes on ice. Lysates are spun for 10 minutes at 10,000 × g at 4 °C to pellet nuclei and insoluble material. Approximately 12 μg total protein is heated in Laemmli buffer with 5% β-mercaptoethanol at 37 °C for 5 minutes and loaded onto a 3% to 8% Tris-acetate gel. The gel is transferred to nitrocellulose and processed for Western blotting by using monoclonal CFTR antibody or polyclonal to GAPDH. Blots are developed by enhanced chemiluminescence. Quantification of the relative amounts of bands C and GAPDH is performed by using NIH ImageJ analysis of scanned films.
Cell Research Cell lines FRT (CFTR or F508del-CFTR), HEK-293 (CFTT or F508del-CFTR) , and HBE cells
Concentrations Dissolved in DMSO, final concentrations ~0.1 mM
Incubation Time 24 or 48 hours
Method

Cells are exposed to various concentrations of VX-809 for 24 or 48 hours. Ussing chamber techniques are used to record the transepithelial current (IT) resulting from CFTR-mediated chloride transport. The single-channel activity of CFTR is measured by using excised inside-out membrane patch recordings. Immunoblot techniques using themonoclonal CFTR antibody are used to measure CFTR maturation in FRT, HEK-293, or HBE cells expressing CFTR or F508del-CFTR.

Experimental Result Images Methods Biomarkers Images PMID
Immunofluorescence CFTR / USP13 Cell surface kAE1 / kAE1 30618756
In Vivo
In vivo

Lumacaftor (VX-809; VRT 826809) is a CFTR modulator that corrects the folding and trafficking of CFTR protein.

Animal Research Animal Models Male Sprague– Dawley rats
Dosages 1 mg/kg
Administration p.o.
NCT Number Recruitment Conditions Sponsor/Collaborators Start Date Phases
NCT03512119 Completed
Cystic Fibrosis Homozygous for Phe 508 Del CFTR|Glucose Intolerance or Newly Diagnosis Diabetes
University Hospital Strasbourg France
February 11 2016 --
NCT02589236 Completed
Cystic Fibrosis
Nivalis Therapeutics Inc.|Medidata Solutions
November 2015 Phase 2
NCT02514473 Completed
Cystic Fibrosis
Vertex Pharmaceuticals Incorporated
July 2015 Phase 3
NCT01899105 Completed
Cystic Fibrosis
Vertex Pharmaceuticals Incorporated
July 2013 Phase 1

Chemical Information & Solubility

Molecular Weight 452.41 Formula

C24H18F2N2O5

CAS No. 936727-05-8 SDF Download Lumacaftor (VX-809) SDF
Smiles CC1=C(N=C(C=C1)NC(=O)C2(CC2)C3=CC4=C(C=C3)OC(O4)(F)F)C5=CC(=CC=C5)C(=O)O
Storage (From the date of receipt)

In vitro
Batch:

DMSO : 90 mg/mL ( (198.93 mM) Moisture-absorbing DMSO reduces solubility. Please use fresh DMSO.)

Ethanol : 13 mg/mL

Water : Insoluble


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