Cas No.: | 668467-91-2 |
Chemical Name: | 1H-Indole-2,3-dione, 5-chloro-1-[(2,5-dichlorophenyl)methyl]-, 3-(O-acetyloxime) |
Synonyms: | LDN-57444 |
SMILES: | CC(=O)O/N=C\1/C2=C(C=CC(=C2)Cl)N(C1=O)CC3=C(C=CC(=C3)Cl)Cl |
Formula: | C17H11Cl3N2O3 |
M.Wt: | 397.64 |
Sotrage: | 2 years -20°C Powder, 2 weeks 4°C in DMSO, 6 months -80°C in DMSO |
Description: | LDN-57444 is a reversible, competitive and site-directed inhibitor of ubiquitin C-terminal hydrolase L1 (UCH-L1), with an IC50 of 0.88 μM and a Ki of 0.40 μM; LDN-57444 also suppresses UCH-L3 activity, with an IC50 of 25 μM. |
In Vivo: | LDN-57444 (0.4 mg/kg, i.p.) blocks the beneficial effect of V-Uch-L1, and worsens contextual conditioning performance as the mice are exposed to the context at 1, 7, 14, and 21 days after training[2]. |
In Vitro: | LDN-57444 is a reversible, competitive inhibitor of UCH-L1, with an IC50 of 0.88 μM, and also suppresses UCH-L3 activity, with an IC50 of 25 μM[1]. LDN-57444 (LDN, 5 μM for 1 hr) inhibits 70% of Uch activity in hippocampal slices of the mouse brain. LDN-57444 (5 μM for 2 hr) does not reduce potentiation further in APP/PS1 slices or in wt slices exposed to 200 nM Aβ[2]. LDN-57444 (25-100 μM) inhibits ubiquitin-proteasome activity dose-dependently in SK-N-SH cells. LDN-57444 (50 μM) also induces apoptotic cell death, causes the endoplasmic reticulum stress and results in expression of spliced XBP-1(XBP-1s, 48KD) in SK-N-SH cells[3]. |