524619

PIP3 Antagonist II, DM-PIT-1

The PIP3 Antagonist II, DM-PIT-1, also referenced under CAS 701947-53-7, controls the biological activity of PIP3.

• Synonym(s): PIP3 Antagonist II, DM-PIT-1, N-​(((2-Hydroxy-​5-​nitrophenyl)amino)thioxomethyl)-​3,​5-​dimethyl-​benzamide, N-((2-Hydroxy-5-nitrophenyl)carbamothioyl)-3,5-dimethylbenzamide, Akt Inhibitor XXII, PDK1 Inhibitor VI
• Empirical Formula (Hill Notation): C₁₆H₁₅N₃O₄S
• CAS Number: 701947-53-7
• Molecular Weight: 345.37
• MDL number: MFCD05129220
• UNSPSC Code: 12352200
• NACRES: NA.51

Properties

• Quality Level: 100
• assay: ≥98% (HPLC)
• form: powder
• manufacturer/tradename: Calbiochem^®
• storage condition: OK to freeze; protect from light
• color: off-white
• solubility: DMSO: 25 mg/mL
• shipped in: ambient
• storage temp.: 2-8°C
• SMILES string: OC(C=CC([N+]([O-])=O)=C1)=C1NC(NC(C2=CC(C)=CC(C)=C2)=O)=S

Description

General description

A cell-permeable benzoylthiourea compound that is shown to compete against PIP3 (Cat. No. 524615) for binding PH (pleckstrin-homology) domains of Akt1 (IC₅₀ ≥31 µM using recombinant human Akt1 aa 1-123), ARNO, GRP1, and PKD1, while lacking activity against PIP3 Btk PH domain ineraction, PI-4,5-P2 (Cat. Nos. 524614, 524644, and 524646) PLC-δ PH domain binding, or PI-3,4-P2 TAPP1/2 PH domains binding, resulting in effective blockage of PIP3-dependent PI3K-PDK1-Akt signaling pathway activation in human glioblastoma U87MG cultures (25 to 100 µM for 3 d) and (5 min 100 ng/ml) PDGF-induced Akt and GRP membrane translocation (by 85% and 70%, respectively, with 1 h 100 µM pretreatment) in serum-starved human breast cancer SUM159 cells, while being inactive against PDGF-induced Btk translocation or (5 min 250 ng/ml) PMA-induced PLC-δ and TAPP1/2 translocations. Although DM-PIT-1 can be administered as a DMSO stock for effective culture treatments, incorporating DM-PIT-1 into PEG-PE mixed micelles is reported to enhance its solubility (up to 1 mM), and presumably delivery efficiency (57% vs. 67% U87MG viability after 24 h 50 µM drug treatment, respectively, with or without PEG-PE encapsulation), making large dosage delivery possible for more effective in vivo administrations (5% vs. 41% of control 4T1 tumor size in mice after 8 daily i.v. dosages of 1 mg/kg micelles-formulated or 0.4 mg/kg free drug, respectively).

A cell-permeable benzoylthiourea compound that is shown to compete against PIP3 (Cat. No. 524615) for binding PH domains of Akt1 (IC₅₀ ≥31 µM), ARNO, GRP1, and PKD1. Effectively blocks PIP3-dependent cellular PI3K-PDK1-Akt signaling pathway activation in U87MG (25 to 100 µM for 3 d) and PDGF-induced Akt and GRP membrane translocation in serum-starved SUM159 cells (1 h 100 µM pretreatment), while being inactive against PDGF-induced Btk translocation or PMA-induced PLC-δ and TAPP1/2 translocations. Although DM-PIT-1 can be administered as a DMSO stock for effective culture treatments, incorporating DM-PIT-1 into PEG-PE mixed micelles enhances its solubility (up to 1 mM) and i.v. dosing limit for more effective in vivo administrations (5% vs. 41% of control 4T1 tumor size in mice via 1 mg/kg micelles-formulated or 0.4 mg/kg free drug daily i.v., respectively).

Packaging

Packaged under inert gas

Warning

Toxicity: Regulatory Review (Z)

Reconstitution

Following reconstitution, aliquot and freeze (-20°C). Stock solutions are stable for up to 6 months at -20°C.

Other Notes

Miao, B., et al. 2010. Proc. Natl. Acad. Sci. USA107, 20126.
Skidan, I., et al. 2009. Drug Deliv.16, 45.

Legal Information

CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany

Safety Information

• Storage Class: 11 - Combustible Solids
• wgk_germany: WGK 3
• flash_point_f: Not applicable
• flash_point_c: Not applicable