Idasanutlin - CAS 1229705-06-9
Catalog number:
B0084-462568
Category:
Inhibitor
Not Intended for Therapeutic Use. For research use only.
COA:
Inquire
Targets:
MDM-2, p53
Description:
Idasanutlin; also known as RG7388 and RO5503781, is a highly potent and selective MDM2 antagonist with potential anticancer activity. RG7388 binds to MDM2 blocking the interaction between the MDM2 protein and the transcriptional activation domain of the tumor suppressor protein p53. By preventing the MDM2-p53 interaction, p53 is not enzymatically degraded and the transcriptional activity of p53 is restored. This may lead to p53-mediated induction of tumor cell apoptosis. MDM2, a zinc finger nuclear phosphoprotein and negative regulator of the p53 pathway, is often overexpressed in cancer cells and has been implicated in cancer cell proliferation and survival.
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Purity:
>98%
Appearance:
Solid powder
Synonyms:
RG7388; RG 7388; RG-7388; RO5503781; RO-5503781; RO 5503781
MSDS:
Inquire
Application:
For research used only
Current Developer:
Roche
1.Antitumour activity of the glycoengineered type II anti-CD20 antibody obinutuzumab (GA101) in combination with the MDM2 selective antagonist idasanutlin (RG7388).
Herting F1, Herter S2, Friess T1, Muth G1, Bacac M2, Sulcova J2, Umana P2, Dangl M1, Klein C2. Eur J Haematol. 2016 Mar 19. doi: 10.1111/ejh.12756. [Epub ahead of print]
OBJECTIVES: To investigate whether the glycoengineered, type II anti-CD20 monoclonal antibody obinutuzumab (GA101) combined with the selective MDM2 antagonist idasanutlin (RG7388) offers superior efficacy to monotherapy in treating B-lymphoid malignancies in preclinical models METHODS: The combined effect of obinutuzumab or rituximab plus idasanutlin on direct cell death/apoptosis induction and antibody-dependent cellular cytotoxicity (ADCC) was evaluated using p53 wild-type Z-138 and DoHH-2 lymphoma cells. Furthermore, whole blood B-cell depletion was analysed, and tumour growth inhibition was evaluated in subcutaneous xenograft models RESULTS: Idasanutlin induced concentration-dependent death of Z-138 and DoHH-2 cells. At concentrations >10-100 nM, idasanutlin enhanced obinutuzumab-induced death of DoHH-2 and Z-138 cells without negatively impacting obinutuzumab-mediated ADCC, natural killer cell activation, or whole blood B-cell depletion.
2.Investigating the effect of autoinduction in cynomolgus monkeys of a novel anticancer MDM2 antagonist, idasanutlin, and relevance to humans.
Glenn KJ1,2, Yu LJ1, Reddy MB1,3, Fretland AJ1,4, Parrott N5, Hussain S1,6, Palacios M1,7, Vazvaei F1, Zhi J8, Tuerck D5. Xenobiotica. 2016 Aug;46(8):667-76. doi: 10.3109/00498254.2015.1110761. Epub 2015 Nov 19.
1. Idasanutlin (RG7388) is a potent p53-MDM2 antagonist currently in clinical development for treatment of cancer. The purpose of the present studies was to investigate the cause of marked decrease in plasma exposure after repeated oral administration of RG7388 in monkeys and whether the autoinduction observed in monkeys is relevant to humans. 2. In monkey liver and intestinal microsomes collected after repeated oral administration of RG7388 to monkeys, significantly increased activities of homologue CYP3A8 were observed (ex vivo). Investigation using a physiologically based pharmacokinetic (PBPK) model suggested that the loss of exposure was primarily due to induction of metabolism in the gut of monkeys. 3. Studies in monkey and human primary hepatocytes showed that CYP3A induction by RG7388 only occurred in monkey hepatocytes but not in human hepatocytes, which suggests the observed CYP3A induction is monkey specific. 4. The human PK data obtained from the first cohorts confirmed the lack of relevant induction as predicted by the human hepatocytes and the PBPK modelling based on no induction in humans.
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CAS 1229705-06-9 Idasanutlin

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