Notch inhibitor 1

Notch inhibitor 1 is an effective Notch inhibitor (IC50s: 7.8 and 8.5 nM for Notch 1 and Notch 3, respectively). Notch inhibitor 1 is also used in the research of cancer.

γ-Secretase-IN-1 is a potent γ-secretase inhibitor that displays partial antiproliferative activity on T-47D cells and inhibits β-amyloid(40), β-amyloid(42), and Notch γ-secretase cleavage.

Tangeretin (NSC-618905), a flavonoid from citrus fruit peels, has been proven to play an important role in anti-inflammatory responses and neuroprotective effects in several disease models and was also selected as a Notch-1 inhibitor.

Divalproex Sodium (Valproate semisodium) binds to and inhibits gamma-aminobutyric acid (GABA) transaminase and its anticonvulsant activity may be exerted by increasing brain concentration of GABA and by inhibiting enzymes that catabolize GABA or block the reuptake of GABA into glia and nerve endings. It also is an HDAC inhibitor, Comprised of sodium valproate and valproic acid with anticonvulsant and antiepileptic activities. Divalproex may also work by suppressing repetitive neuronal firing through the inhibition of voltage-sensitive sodium channels.

Crenigacestat (LY3039478) is an orally bioavailable Notch inhibitor with an IC50 of ~1 nM in most tumor cell lines tested. It effectively inhibits mutant Notch receptor activity and, in a xenograft tumor model, inhibits the expression of Notch-regulated genes and N1ICD cleavage in the tumor microenvironment.

Jagged-1 (188-204)is a fragment of the JAG-1 protein. JAG-1 is Notch ligand, a peptide that is the most conspicuously expressed ligand in skin. JAG-1 induces epidermal maturation. Exposing submerged keratinocytes monolayers to JAG-1 with elevated calcium concentration produces stratification with loricrin expression and NF-αB activation.

3,5-Bis(4-nitrophenoxy)benzoic acid (Compound W) is a γ-secretase inhibitor that reduces the levels of released Aβ42 and notch-1 Aβ-like peptide 25 (Nβ25).

RBPJ Inhibitor-1 (RIN1), a compound that impedes the functional interaction between RBPJ and SHARP, effectively inhibits NOTCH-dependent tumor cell proliferation[1].

IMR-1, a novel class of Notch inhibitors, targets transcriptional activation with an IC50 of 6 μMol L.