Enzymes for Research, Diagnostic and Industrial Use


Cat No.
RG7112 is the first clinicalsmall-molecule inhibitor of MDM2.
Product Overview
RG7112 is a selective inhibitor of p53-MDM2 binding that frees p53 from negative control, activating the p53 pathway in cancer cells leading to cell cycle arrest and apoptosis. P53 is a potent tumor suppressor that activates the transcription of a subset of genes controlling cell-cycle progression and apoptosis. MDM2 is a negative regulator of p53 that binds the transactivation domain of p53 and inhibits its ability to activate transcription. MDM2 is also an E3 ubiquitin ligase that targets p53 for proteosomal degradation. MDM2 overexpression is one of the mechanisms by which the wild type p53 function is impaired. RG7112 has been profiled extensively in many cell lines. In 15 cancer cell lines expressing wild-type p53, it shows IC50 in the range of 0.18-2.2 μM. However, the inhibition is much less in seven cancer cell lines with p53 mutation, IC50 5.7-20.3 μM. The overall selectivity is 14-fold. In the animal models, RG7112-induced thrombocytopenia occurred rather late during the treatment period and persisted after drug discontinuation, suggesting that the drug acts on early hematopoietic progenitor cells. This is supported by the RG7112 ability to inhibit CFU-MK colonies formation by the CD34t cells in vitro. Administration of RG7112 in rats and monkeys reduces WBC counts and, to a lesser extent, hemoglobin levels. In patients treated with RG7112, neutropenia is among the serious adverse events while anemia occurred only in 2 of 20 patients. Interestingly, when tested in vitro, the same concentration of RG7112 that reduced CFU-MK colony formation do not significantly affect the formation of BFU-E and CFU-GM derived colonies.
Molecular Weight
Store at -20°C
RG-7112; RG 7112
Molecular Formula
Chemical Name
Soluble in DMSO
Shipping Conditions
Evaluation sample solution: ship with blue ice. All other available size: ship with RT, or blue ice upon request
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