NVS1.1
NVS1.1 is an orally active, blood-brain barrier-penetrant eRF1 degrader. NVS1.1 induces ubiquitination of eRF1 at Lys279, mediates proteasomal degradation via the E3 ubiquitin ligases RNF14 and RNF25 as well as the translational stress sensor GCN1, traps eRF1 at the ribosomal A-site, inhibits translation termination and triggers ribosome collision. As a readthrough enhancer, NVS1.1 enables near-cognate tRNA incorporation at premature termination codons by reducing intracellular eRF1 levels. NVS1.1 activates ribosome-associated quality control pathways via ribosome collision, including ubiquitination of small subunit ribosomal proteins. NVS1.1 restores functional full-length CFTR and IDUA proteins and reduces glycosaminoglycan accumulation in relevant models. NVS1.1 can be used in the research of cystic fibrosis and Hurler syndrome (mucopolysaccharidosis type I, MPS I).
For research use only. We do not sell to patients.
- Formula: C17H16ClN3O2S
- Molecular Weight:361.85
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Storage:
Please store the product under the recommended conditions in the Certificate of Analysis.
Biological Activity
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eRF1 |
RNF14 |
RNF25 |
NVS1.1 (1-10 μM; 48 h) dose-dependently restores functional IDUA enzymatic activity in HEKR4 cells expressing the IDUAQ70X or IDUAW402X nonsense mutations[1].
NVS1.1 (0.1-10 μM for 7 days, 0-0.6 μM for 7 weeks) dose-dependently restores IDUA activity, reduces GAG accumulation, normalizes GUSB activity, and is accompanied by eRF1 depletion in primary fibroblasts from homozygous IDUAW402X Hurler syndrome patients[1].
NVS1.1 (0.00-5.00 μM; 8-24 h) increases the level of IDUA-W402X mRNA in primary fibroblasts from Hurler syndrome patients[1].
NVS1.1 (2.5 μM; 6 h) induces proteasomal degradation of eRF1 in HEKR4 PTC reporter cells, and this degradation process does not require neddylation modification of Cullin-RING ligases[1].
NVS1.1 (25 μM; 30 min) induces ubiquitination modification of eRF1 in HeLa and HEKR4 PTC cells[1].
The process by which NVS1.1 (0.00-2.5 μM; 6 h) induces eRF1 degradation in HEKR4 PTC reporter cells requires the catalytically active E3 ubiquitin ligases RNF14 and RNF25[1].
The nonsense codon readthrough-inducing effect of NVS1.1 (0.1-10 μM; 24 h) in HEKR4 PTC reporter cells depends on catalytically active RNF14 and RNF25[1].
NVS1.1 (2.5 μM; 6 h) requires GCN1 to induce the degradation of eRF1 in HEKR4 cells[1].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
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Cell Line:Parental, RNF14/RNF25 knockout, and rescue HEKR4 PTC reporter cells
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Concentration:0, 0.16, 0.31, 0.63, 1.25, 2.50 μM
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Incubation Time:6 h
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Result:Decreased eRF1 levels in a dose-dependent manner in parental cells.
Rendered cells resistant to NVS1.1-induced eRF1 degradation in RNF14 or RNF25 knockout cells.
Restored NVS1.1 sensitivity in rescue cell lines expressing wild-type RNF14 or RNF25, while catalytically inactive mutants (RNF14 C220S, RNF25 C135S/C138S) did not.
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Cell Line:primary Hurler syndrome fibroblasts
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Concentration:0, 0.76, 1.95, 5
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Incubation Time:8, 16, 24 h
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Result:Did not affect IDUA-W402X mRNA levels in primary Hurler syndrome fibroblasts at concentrations ≤2 μM across 8-24 h, but increased mRNA levels at 5 μM after 16-24 h
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
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Animal Model:Wistar Kyoto (homozygous for IDUA-W401X mutation; male and female; 8-10 weeks old; 200-300 g)[1]
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Dosage:20 mg/kg; 40 mg/kg
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Administration:p.o.; daily; 14 days
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Result:Restored approximately 1% of the IDUA activity measured in brain tissue of untreated wild-type rats (40 mg/kg dose).
Reduced brain GAG levels by 57% (40 mg/kg dose).
Reduced GUSB activity to approximately 1.3-fold of wild-type levels (40 mg/kg dose).
Reduced brain GAG levels by 36% (20 mg/kg dose).
Chemical Information
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Molecular Weight 361.85
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Formula C17H16ClN3O2S
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SMILES
N[C@H](C1=CC=CC=C1)C(C=C2S(=O)(C)=O)=C(C=C2C3=CC=NN3)Cl
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Shipping
Room temperature in continental US; may vary elsewhere.
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Storage
Please store the product under the recommended conditions in the Certificate of Analysis.
Purity & Documentation
References
Calculators
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)