RO4929097|γ secretase inhibitor|DC Chemicals

RO4929097|γ secretase inhibitor|DC Chemicals

RO4929097 is a γ secretase inhibitor with IC50 of 4 nM, inhibiting cellular processing of Aβ40 and Notch with EC50 of 14 nM and 5 nM, respectively.

Product name: RO4929097 |Cat No. DC8215|Other names: RO4929097|Cas: 847925-91-1|Molecule Weight: 469.4|Molecule Formular: C22H20F5N3O3| Purity: >98%

RO4929097 is a γ secretase inhibitor with IC50 of 4 nM, inhibiting cellular processing of Aβ40 and Notch with EC50 of 14 nM and 5 nM, respectively.in vitro: RO4929097 decreases the amount of Aβ peptides secreted into the culture medium in HEK293 cells with EC50 of 14 nM. RO4929097 strongly inhibits Notch processing with EC50 of 5 nM in the Notch cell-based reporter assay. The potency of RO4929097 in cell-free and cellular assays is in the low nanomolar range with >100-fold selectivity observed with respect to 75 other proteins of various types including receptors, ion channels, and enzymes (CEREP panel). After 5 days of treatment, RO4929097 reduces the production of ICN in the human NSCLC A549 cells inducing a flattened and less transformed tumor cell phenotype in tissue culture . RO4929097 blocks Notch processing in human non-small cell lung carcinoma cells and decreases expression of the Notch transcriptional target gene Hes1. Treatment with RO4929097 reveals a two- to threefold decrease in the expression of direct Notch target genes, Hes1, Hey1, and Heyl in SUM149 and a 3.5- to eightfold decrease in expression in SUM190 cells. RO4929097 modestly inhibits the growth of SUM149 cells in a dose-dependent manner. At a concentration of 1 μM of RO4929097, growth inhibition is 20 % for SUM149 and 10 % for SUM190 cells, relative to vehicle-treated controls. RO4929097 decreases the production of inflammatory cytokines by T-cells. Furthermore, with RO4929097 treatment, there is a shift in favor of TH2 over TH1 cytokines. In addition, T-cell activation induced IL-6 production would be increased with RO4929097. Upon RO4929097 treatment, the selected melanoma cell lines reveals downregulation of NOTCH downstream effector HES1. A decrease in the amount of melanospheres formed upon RO4929097 treatment in primary melanoma cell lines is detected.
in vivo: Oral injection of 3 to 60 mg/kg RO4929097 once daily or twice daily to nude mice bearing A549 NSCLC xenografts for either 7, 14, or 21 days of a 21-day schedule results in significant tumor growth inhibition compared with vehicle-treated animals. The tumor growth inhibition values ranges from 66% to 91%. When mice are treated with 60 mg/kg RO4929097 twice daily with the 7+/14- schedule, treatment initially arouses regression of established A549 tumors. At the end of the 21-day cycle (day 47), tumor growth prevention is still 91% compared with vehicle control mice. Inhibition of tumor growth remains prolonged and sustained up to 34 days post-treatment (day 67). On day 67, these mice are retreated with the same dose of RO4929097 for a second cycle (7 days) until day 74. Importantly, the antitumor effects are sustained after dosing is completed [1]. RO4929097 leads to reduced expression of genes associated with angiogenesis in A549 xenograft model. In contrast, the RO4929097-resistant H460a xenograft displays little change in expression of these genes, underscoring the in vivo anti-angiogenesis mechanism of action of RO4929097.

For research and scientific purpose only, not for human use.