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Samotolisib (LY3023414) PI3K inhibitor

Name: Samotolisib (LY3023414)
Brand: Selleck Chemicals
SKU: S8322
Availability: InStock
Rating: 5 (12 reviews)

Cat.No.S8322

Samotolisib (LY3023414, GTPL8918) is an oral ATP competitive inhibitor of the class I PI3K isoforms, mTOR and DNA-PK.

Chemical Structure

Molecular Weight: 406.48

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

Quality Control

Batch: Purity: 99.71%

99.71

Related Targets	Akt mTOR AMPK GSK-3 ATM/ATR DNA-PK PDPK1 PTEN PP2A PDK PI4K PIKfyve MELK
Related Products	LY294002 3-Methyladenine (3-MA) Dactolisib (BEZ235) Pictilisib (GDC-0941) Wortmannin (SL-2052) Buparlisib (BKM120) PI-103 TGX-221 ZSTK474 Omipalisib (GSK2126458) A66 PF-04691502 PIK-75 HCl IC-87114 740 Y-P (PDGFR 740Y-P) AS-605240 Taselisib (GDC 0032) SAR405 Apitolisib (GDC-0980) VPS34-IN1 PIK-90 AZD6482 Gedatolisib (PKI-587) HS-173 AS-252424 Eganelisib (IPI-549) VS-5584 (SB2343) GSK2636771 AZD8186 GSK1059615

Cell Culture, Treatment & Working Concentration

Cell Lines	Assay Type	Activity Description	PMID
KB-8-5-11	qHTS assay	P-glycoprotein substrates identified in KB-8-5-11 adenocarcinoma cell line, qHTS therapeutic library screen, Potency=0.6513μM.	31515284
KB-3-1	qHTS assay	P-glycoprotein substrates identified in KB-3-1 adenocarcinoma cell line, qHTS therapeutic library screen.	31515284
Click to View More Cell Line Experimental Data

Chemical Information, Storage & Stability

Molecular Weight	406.48	Formula	C₂₃H₂₆N₄O₃	Storage (From the date of receipt)	3 years-20°Cpowder
CAS No.	1386874-06-1	Download SDF		Storage of Stock Solutions	1 year-80°Cin solvent 1 month-20°Cin solvent
Synonyms	GTPL8918			Smiles	CC(CN1C2=C3C=C(C=CC3=NC=C2N(C1=O)C)C4=CC(=CN=C4)C(C)(C)O)OC

Solubility

In vitro
Batch:

DMSO : 81 mg/mL (199.27 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO.)

Ethanol : 6 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.
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.	4.000mg/ml (9.84mM)	Taking the 1 mL working solution as an example, add 50 μL of 80 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.	1.000mg/ml (2.46mM)	Taking the 1 mL working solution as an example, add 50 μL of 20 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.
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.

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	class I PI3K isoforms ^[1] mTOR kinase ^[1] DNA-PK ^[1]
In vitro	Samotolisib (LY3023414) shows high solubility across a wide pH range. In vitro, inhibition of PI3K/AKT/mTOR signaling by this compound causes G1 cell-cycle arrest and resulted in broad antiproliferative activity in cancer cell panel screens. In cell-based assays, its inhibition of PI3K and mTOR is assessed in the PTEN-deficient U87 MG glioblastoma cell line. It inhibits the phosphorylation of AKT at position T308 downstream of PI3K at an IC50 of 106 nM. Similarly, it inhibits phosphorylation of AKT at position S473 (IC50 = 94.2 nM) by mTORC2 as well as phosphorylation of mTORC1 kinase targets p70S6K (position T389; IC50 =10.6 nM) and 4E-BP1 (positions T37/46; IC50 = 187 nM). The downstream phosphorylation of S6RP at positions pS240/244 (IC50 = 19.1 nM) by p70S6K was inhibited as well, indicating target inhibition along the entire PI3K/AKT/mTOR pathway by this compound^[1].
In vivo	Samotolisib (LY3023414) demonstrates high bioavailability and dose-dependent dephosphorylation of PI3K/AKT/mTOR pathway downstream substrates such as AKT, S6K, S6RP, and 4E-BP1 for 4 to 6 hours in vivo, reflecting the drug's half-life of 2 hours. Intermittent target inhibition is sufficient for its antitumor activity. This compound shows time- and dose-dependent target inhibition in vivo. It is currently being evaluated in phase 1 and 2 trials for the treatment of human malignancies^[1].
References	[1] https://pubmed.ncbi.nlm.nih.gov/27439478/

Applications

Methods	Biomarkers	Images	PMID
Western blot	pS6K1 / S6K1 / pAKT-S473 / AKT1 / pERK / ERK p-mTOR / mTOR / ATG5 / Beclin-1 / p62		29228741
Growth inhibition assay	Cell viability		29228741

Clinical Trial Information

(data from https://clinicaltrials.gov, updated on 2024-05-22)

NCT Number	Recruitment	Conditions	Sponsor/Collaborators	Start Date	Phases
NCT02575703	Completed	Healthy	Eli Lilly and Company	October 2015	Phase 1
NCT02536586	Completed	Neoplasm	Eli Lilly and Company	September 2015	Phase 1
NCT02443337	Terminated	Non-small Cell Lung Cancer Metastatic	Eli Lilly and Company\|SCRI Development Innovations LLC	July 2015	Phase 2

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