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LY411575 γ-Secretase Inhibitor

Name: LY411575
Brand: Selleck Chemicals
SKU: S2714
Availability: InStock
Rating: 5 (42 reviews)

Cat.No.S2714

LY411575 is a potent γ-secretase inhibitor with IC50 of 0.078 nM/0.082 nM (membrane/cell-based), also inhibits Notch cleavage with IC50 of 0.39 nM in APP or NΔE expressing HEK293 cells. LY411575 induces apoptosis.

Chemical Structure

Molecular Weight: 479.48

Jump to Mechanism of Action Cell Culture & Working Concentration Solubility Chemical Information, Storage & Stability Specificity

Quality Control

Batch: Purity: 99.59%

99.59

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Cell Culture, Treatment & Working Concentration

Cell Lines	Assay Type	Concentration	Incubation Time	Activity Description	PMID
CHO	Function assay		24 hrs	Reduction of human wild type PS1-induced amyloid beta-40 level in CHO cells overexpressing human APP751 after 24 hrs by liquid phase electrochemiluminescence assay relative to control, EC50 = 0.000114 μM.	17573346
HEK293	Function assay			Inhibition of gamma secretase in human HEK293 cells assessed as amyloid beta 40 production, EC50 = 0.000119 μM.	17573346
CHO	Function assay		24 hrs	Reduction of human wild type PS1-induced amyloid beta-42 level in CHO cells overexpressing human APP751 after 24 hrs by liquid phase electrochemiluminescence assay relative to control, EC50 = 0.000135 μM.	17573346
HEK293	Function assay		24 hrs	Inhibition of human gamma-secretase expressed in HEK293 cells using Notch1-VP16-Gal4 as substrate after 24 hrs by Bright-Glo luciferase reporter gene assay, IC50 = 0.0003 μM.	29359565
CHO	Function assay		24 hrs	Reduction of human PS1 delta exon9 mutant-induced amyloid beta-42 level in CHO cells overexpressing human APP751after 24 hrs by liquid phase electrochemiluminescence assay relative to control, EC50 = 0.000352 μM.	17573346
CHO	Function assay		24 hrs	Reduction of human PS1 delta exon9 mutant-induced amyloid beta-40 level in CHO cells overexpressing human APP751after 24 hrs by liquid phase electrochemiluminescence assay relative to control, EC50 = 0.000358 μM.	17573346
SH-SY5Y	Function assay			Inhibition of gamma secretase-mediated amyloid beta (1 to 40) production in human SH-SY5Y cells, IC50 = 0.001 μM.	19694467
SH-SY5Y	Function assay			Displacement of [3H]5-chloro-N-((2S,3R)-5,5,5-trifluoro-1-hydroxy-3-methylpentan-2-yl)thiophene-2-sulfonamide from gamma secretase in human SH-SY5Y cells by competitive binding assay, IC50 = 0.001 μM.	19694467
HEK293	Function assay		24 hrs	Inhibition of human SPPL2a expressed in HEK293 cells using GAL4-VP16 fusedTNFalpha (1 to 76)-NTF as substrate after 24 hrs by Bright-Glo luciferase reporter gene assay, IC50 = 0.01 μM.	29359565
U2OS	Function assay		24 hrs	Inhibition of human SPP expressed in human U2OS cells using EGFP-labeled EnvSigSeq-SEAP as substrate after 24 hrs by Hoechst staining based high content imaging assay, IC50 = 0.05 μM.	29359565
HEK293	Function assay		3 days	Modulation of gamma-secretase in HEK293 cells expressing guinea pig Swedish mutant SFV-APP695sw coexpressing DLL4 assessed as inhibition of notch processing in human TE671 cells after 3 days by dual-cell luciferase reporter gene assay, IC50 = 1.2 μM.	24139583
SH-SY5Y	Function assay		1 hr	Displacement of [3H](S)-5-chloro-N-(3-ethyl-1-hydroxypentan-2-yl)thiophene-2-sulfonamide from gamma secretase in human SH-SY5Y cells after 1 hr	19443228
H4	Function assay	100 nM	16 hrs	Inhibition of gamma secretase expressed in human H4 cells expressing BRI-C99 fusion protein assessed as C99 fragment accumulation fragment at 100 nM incubated for 16 hrs in by immunoblot	23181502
H4	Function assay	10 uM	16 hrs	Inhibition of gamma secretase expressed in human H4 cells assessed as reduction in C83 levels at 10 uM incubated for 16 hrs by immunoblot	23181502
H4	Function assay	10 uM	16 hrs	Inhibition of gamma secretase expressed in human H4 cells assessed as reduction in CTF levels at 10 uM incubated for 16 hrs by immunoblot	23181502
Click to View More Cell Line Experimental Data

Chemical Information, Storage & Stability

Molecular Weight	479.48	Formula	C₂₆H₂₃F₂N₃O₄	Storage (From the date of receipt)	3 years-20°Cpowder
CAS No.	209984-57-6	Download SDF		Storage of Stock Solutions	1 year-80°Cin solvent 1 month-20°Cin solvent
Synonyms	N/A			Smiles	CC(C(=O)NC1C2=CC=CC=C2C3=CC=CC=C3N(C1=O)C)NC(=O)C(C4=CC(=CC(=C4)F)F)O

Solubility

In vitro
Batch:

DMSO : 95 mg/mL ( (198.13 mM) Moisture-absorbing DMSO reduces solubility. Please use fresh DMSO.)

Ethanol : 13 mg/mL

Water : Insoluble

Molarity Calculator

Mass	Concentration	Volume	Molecular Weight
=	×	×

Dilution Calculator Molecular Weight Calculator

In vivo Batch:
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Clear solution	5%DMSO 1 40%PEG300 2 5%Tween80 3 50%ddH2O Validated by Selleck labs. Should you need adjustments to this formulation, contact our sales team for custom testing.	0.500mg/ml (1.04mM)	Taking the 1 mL working solution as an example, add 50 μL of 10 mg/ml clarified DMSO stock solution to 400 μL of PEG300, mix evenly to clarify it; add 50 μL of Tween80 to the above system, mix evenly to clarify; then continue to add 500 μL of ddH2O to adjust the volume to 1 mL. The mixed solution should be used immediately for optimal results.
Clear solution	5% DMSO 1 95% Corn oil Validated by Selleck labs. Should you need adjustments to this formulation, contact our sales team for custom testing.	0.500mg/ml (1.04mM)	Taking the 1 mL working solution as an example, add 50 μL of 10 mg/ml clear DMSO stock solution to 950 μL of corn oil and mix evenly. The mixed solution should be used immediately for optimal results.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Clear solution	30%PEG400 1 0.5%Tween80 2 5%propylene glycol Validated by Selleck labs. Should you need adjustments to this formulation, contact our sales team for custom testing.	30.000mg/ml (62.57mM)	Taking the 1 mL working solution as an example, add 300 μL of 100 mg/ml clarified PEG400 stock solution to 5 μL of Tween80, mix evenly to clarify it; add 50 μL Propylene glycol to the above system, mix evenly to clarify it; then continue to add 645 μL ddH2O to adjust the volume. to 1 mL. The mixed solution should be used immediately for optimal results.
Clear solution	5%DMSO 1 40%PEG300 2 5%Tween80 3 50%ddH2O Validated by Selleck labs. Should you need adjustments to this formulation, contact our sales team for custom testing.	5.000mg/ml (10.43mM)	Taking the 1 mL working solution as an example, add 50 μL of 100 mg/ml clarified DMSO stock solution to 400 μL of PEG300, mix evenly to clarify it; add 50 μL of Tween80 to the above system, mix evenly to clarify; then continue to add 500 μL of ddH2O to adjust the volume to 1 mL. The mixed solution should be used immediately for optimal results.
Clear solution	5% DMSO 1 95% Corn oil Validated by Selleck labs. Should you need adjustments to this formulation, contact our sales team for custom testing.	0.650mg/ml (1.36mM)	Taking the 1 mL working solution as an example, add 50 μL of 13 mg/ml clear DMSO stock solution to 950 μL of corn oil and mix evenly. The mixed solution should be used immediately for optimal results.

In vivo Formulation Calculator (Clear solution)

Step 1: Enter information below (Recommended: An additional animal making an allowance for loss during the experiment)

Dosage: mg/kg Average weight of animals: g Dosing volume per animal:μL Number of animals:

Step 2: Enter the in vivo formulation (This is only the calculator, not formulation. Please contact us first if there is no in vivo formulation at the solubility Section.)

% DMSO + % + % Tween 80 + % ddH₂O

%DMSO+ %

Calculation results:

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.

Note: 1. Please make sure the liquid is clear before adding the next solvent.
2. Be sure to add the solvent(s) in order. You must ensure that the solution obtained, in the previous addition, is a clear solution before proceeding to add the next solvent. Physical methods such
as vortex, ultrasound or hot water bath can be used to aid dissolving.

Mechanism of Action

Targets/IC₅₀/Ki	γ secretase ^[1] (HEK293 cells expressing either APP or NΔE) 0.078 nM γ secretase ^[1] (HEK293 cells expressing either APP or NΔE) 0.082 nM Notch S3 cleavage ^[1] (HEK293 cells expressing either APP or NΔE) 0.39 nM
In vitro	LY-411575 inhibits γ-secretase which can be assessed by the substrates like amyloid precursor protein (APP) and Notch S3 cleavage. ^[1] This compound, which blocks Notch activation, results in apoptosis in primary and immortalized KS cells. ^[2]
Kinase Assay	Assays for Aβ and NICD
Kinase Assay	Procedures for measuring γ-secretase activity in membranes prepared from HEK293 cells expressing APP have been described previously (Zhang L et al Biochemistry 40, 5049-5055). Intact HEK293 cells expressing either APP or NΔE are treated with various concentrations of this compound for 4 hours at 37 °C. In the case of cells expressing NΔE, cells are lysed, the cell lysates are separated on a 4-12% NuPAGE gel, and the processed NICD fragment is detected via Western blot with a cleavage site-specific antibody. The inhibition of NICD production is quantified by spot densitometric analysis using FluorChem. In the case of cells expressing APP, the conditioned medium is collected, centrifuged at 10,000 × g for 5 minutes to remove cell debris, and stored at -20 °C prior to the determination of Aβ levels. Aβ40 and -42 produced in HEK293 membrane- and cell-based assays, as well as plasma Aβ40 and cortex Aβ40 from TgCRND8 mice, are analyzed without pretreatment using an electrochemiluminescence detection-based immunoassay. Plasma Aβ42 is measured by enzyme-linked immunosorbent assay. A commercially available enzyme-linked immunosorbent assay kit is used to measure cortex Aβ42 according to the manufacturer's instructions.
In vivo	10 mg/kg oral dose of LY-411575 decreases brain and plasma Aβ40 and -42 dose-dependently. ^[1] This compound reduces cortical Aβ40 in young (preplaque) transgenic CRND8 mice (ED50 ≈ 0.6 mg/kg) and produces significant thymus atrophy and intestinal goblet cell hyperplasia at higher doses (>3 mg/kg). The therapeutic window is similar after oral and subcutaneous administration and in young and aged CRND8 mice. Both the thymus and intestinal side effects are reversible after a 2-week washout period. Three-week treatment with 1 mg/kg of this chemical reduces cortical Aβ40 by 69% without inducing intestinal effects, although a previously unreported change in coat color is observed. ^[3]
References	https://pubmed.ncbi.nlm.nih.gov/14709552/ https://pubmed.ncbi.nlm.nih.gov/15940249/ https://pubmed.ncbi.nlm.nih.gov/16946102/

Tech Support

Handling Instructions

Tel: +1-832-582-8158 Ext:3

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Frequently Asked Questions

Question 1:
Does this inhibitor act on beta-secretase?

Answer:
It has been reported to inhibit gamma-secretase, but currently, there is no publication reporting its inhibition on beta-secretase.

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