| Identification | Back Directory | [Name]
OSI-906 | [CAS]
867160-71-2 | [Synonyms]
OSI-906
OSI 906AA
Linsitinib
Linsitinib(OSI906)
OSI-906 Linsitinib
Linsitinib, Free Base
cis-3-[8-Amino-1-(2-phenyl-7-quinolinyl)imidazo[1,5-a]pyrazin-3-yl]-1-methylcyclobutanol
(1s,3s)-3-(8-amino-1-(2-phenylquinolin-7-yl)imidazo[1,5-a]pyrazin-3-yl)-1-methylcyclobutanol
Cyclobutanol, 3-[8-aMino-1-(2-phenyl-7-quinolinyl)iMidazo[1,5-a]pyrazin-3-yl]-1-Methyl-, cis-
3-(8-Amino-1-(2-phenylquinolin-7-yl)-2,3-dihydro-imidazo[1,5-a]pyrazin-3-yl)-1-methylcyclobuta
(1s,3r)-3-[4-aMino-3-(2-phenylquinolin-7-yl)iMidazo[1,5-a]pyrazin-1-yl]-1-Methylcyclobutan-1-ol
(1S,3r)-3-((S)-8-aMino-1-(2-phenylquinolin-7-yl)-2,3-dihydroiMidazo[1,5-a]pyrazin-3-yl)-1-Methylcyclobutanol
cis-3-[8-Amino-1-(2-phenyl-7-quinolinyl)imidazo[1,5-a]pyrazin-3-yl]-1-methylcyclobutanol Linsitinib(OSI906) | [EINECS(EC#)]
1533716-785-6 | [Molecular Formula]
C26H23N5O | [MDL Number]
MFCD23726651 | [MOL File]
867160-71-2.mol | [Molecular Weight]
421.51 |
| Chemical Properties | Back Directory | [Melting point ]
>175°C (dec.) | [density ]
1.39 | [storage temp. ]
-20°C | [solubility ]
Soluble in DMSO (up to 30 mg/ml) | [form ]
solid | [pka]
14.84±0.40(Predicted) | [color ]
Yellow | [Stability:]
Stable for 1 year from date of purchase as supplied. Solutions in DMSO may be stored at -20°C for up to 2 months. |
| Hazard Information | Back Directory | [Uses]
Linsitinib is a small-molecule dual insulin-like growth factor-1 receptor (IGF-IR) and insulin receptor (IR) kinase inhibitor. IGF-I receptor (IGF-IR) has been implicated in the promotion of tumorigenesis, metastasis and resistance to cancer therapies and thus Linsitinib may be a useful anticancer agent. | [Definition]
ChEBI: 3-[8-amino-1-(2-phenyl-7-quinolinyl)-3-imidazo[1,5-a]pyrazinyl]-1-methyl-1-cyclobutanol is a member of quinolines and a member of cyclobutanes. | [target]
IGF-1R | [storage]
Store at -20°C | [References]
1) Mulvihill?et al.?(2009),?Discovery of OSI-906: a selective and orally efficacious inhibitor of the IGF-1 receptor and insulin receptor; Future Med. Chem.?1?1153
2) Bendell?et al.?(2015),?A phase Ib study of linsitinib (OSI-906), a dual inhibitor of IGF-1R and IR tyrosine kinase, in combination with everolimus as treatment for patients with refractory metastatic colorectal cancer; Invest. New Drugs?33?187
3) Pivonello?et al.?(2016),?The dual targeting of insulin and insulin-like growth factor 1 receptor enhances the mTOR inhibitor-mediated antitumor efficacy in hepatocellular carcinoma?; Oncotarget?7?9718
4) Lee?et al.?(2016),?Inhibition of IGF1R signaling abrogates resistance to afatinib (BIBW2992) in EGFR T790M mutant lung cancer cells; Mol. Carcinog.?55?991
5) Macaulay?et al.?(2016),?Phase I Dose-Escalation Study of Linsitinib (OSI-906) and Erlotinib in Patients with Advanced Solid Tumors; Clin. Cancer Res.?22?2897
6) De Lint?et al.?(2016),?Sensitizing Triple-Negative Breast Cancer to PI3K Inhibition by Cotargeting IGF1R; Mol. Cancer Ther.?15?1545 |
| Questions And Answer | Back Directory | [Description]
Linsitinib (OSI-906) is a selective inhibitor of IGF-1R with IC50 of 35 nM in cell-free assays; modestly potent to InsR with IC50 of 75 nM, and no activity towards Abl, ALK, BTK, EGFR, FGFR1/2, PKA etc. Phase 3. | [In vitro]
OSI-906 inhibits IGF-1R autophosphorylation and activation of the downstream signaling proteins Akt, ERK1/2 and S6 kinase with IC50 of 0.028 to 0.13 μM. OSI-906 enables an intermediate conformation of the target protein through interactions with the C-helix. OSI-906 displays favorable metabolic stability in liver microsomes. OSI-906 fully inhibits both IR and IGF-1R phosphorylation at a concentration of 1 μM. OSI-906 inhibits proliferation of several tumor cell lines including non-small-cell lung cancer and colorectal cancer (CRC) tumor cell line with EC50 of 0.021 to 0.810 μM. | [In vivo]
OSI-906 inhibits tumor growth in an IGF-1R-driven xenograft mouse model, with 100% TGI and 55% regression at a dose of 75 mg/kg and 60% TGI and no regression at a dose of 25 mg/kg. OSI-906 administration induces different elimination half-lives of itself in dog, rat and mice, the elimination half-lives are 1.18 hours, 2.64 hours and 2.14 hours, respectively. OSI-906 administration at different single dose once-daily in femal Sprague-Dawley rat and femal CD-1 mouse reveal that the Vmax is not dose-proportional to OSI-906 dose. OSI-906 elevates the blood glucose levels at a dose of 25 mg/kg after 12 days administration. OSI-906 administration at a single dose of 75 mg/kg in IGF-1R-driven full-length human IGF-1R (LISN) xenograft mouse model achieve maximal inhibition of IGF-1R phosphorylation (80%) between 4 and 24 hours with plasma drug concentrations of 26.6-4.77 μM. OSI-906 administered as a single dose of at 60 mg/kg in NCI-H292 xenografts mice inhibits uptake of glucose at 2, 4, and 24 hours post-treatment in vivo. OSI-906 inhibits the growth of tumors in NCI-H292 xenograft mouse model. |
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