| Structural highlights
Function
[HS90A_HUMAN] Molecular chaperone that promotes the maturation, structural maintenance and proper regulation of specific target proteins involved for instance in cell cycle control and signal transduction. Undergoes a functional cycle that is linked to its ATPase activity. This cycle probably induces conformational changes in the client proteins, thereby causing their activation. Interacts dynamically with various co-chaperones that modulate its substrate recognition, ATPase cycle and chaperone function.[1] [2]
Publication Abstract from PubMed
A novel class of heat shock protein 90 (Hsp90) inhibitors was discovered by high-throughput screening and was subsequently optimized using a combination of structure-based design, parallel synthesis, and the application of medicinal chemistry principles. Through this process, the biochemical and cell-based potency of the original HTS lead were substantially improved along with the corresponding metabolic stability properties. These efforts culminated with the identification of a development candidate (compound 42) which displayed desired PK/PD relationships, significant efficacy in a melanoma A2058 xenograft tumor model, and attractive DMPK profiles.
Optimization of Potent, Selective, and Orally Bioavailable Pyrrolodinopyrimidine-Containing Inhibitors of Heat Shock Protein 90. Identification of Development Candidate 2-Amino-4-{4-chloro-2-[2-(4-fluoro-1H-pyrazol-1-yl)ethoxy]-6-methylphenyl} -N-(2,2-difluoropropyl)-5,7-dihydro-6H-pyrrolo[3,4-d]pyrimidine-6-carboxam ide.,Zehnder L, Bennett M, Meng J, Huang B, Ninkovic S, Wang F, Braganza J, Tatlock J, Jewell T, Zhou JZ, Burke B, Wang J, Maegley K, Mehta PP, Yin MJ, Gajiwala KS, Hickey MJ, Yamazaki S, Smith E, Kang P, Sistla A, Dovalsantos E, Gehring MR, Kania R, Wythes M, Kung PP J Med Chem. 2011 Apr 20. PMID:21438541[3]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Martinez-Ruiz A, Villanueva L, Gonzalez de Orduna C, Lopez-Ferrer D, Higueras MA, Tarin C, Rodriguez-Crespo I, Vazquez J, Lamas S. S-nitrosylation of Hsp90 promotes the inhibition of its ATPase and endothelial nitric oxide synthase regulatory activities. Proc Natl Acad Sci U S A. 2005 Jun 14;102(24):8525-30. Epub 2005 Jun 3. PMID:15937123 doi:10.1073/pnas.0407294102
- ↑ Forsythe HL, Jarvis JL, Turner JW, Elmore LW, Holt SE. Stable association of hsp90 and p23, but Not hsp70, with active human telomerase. J Biol Chem. 2001 May 11;276(19):15571-4. Epub 2001 Mar 23. PMID:11274138 doi:10.1074/jbc.C100055200
- ↑ Zehnder L, Bennett M, Meng J, Huang B, Ninkovic S, Wang F, Braganza J, Tatlock J, Jewell T, Zhou JZ, Burke B, Wang J, Maegley K, Mehta PP, Yin MJ, Gajiwala KS, Hickey MJ, Yamazaki S, Smith E, Kang P, Sistla A, Dovalsantos E, Gehring MR, Kania R, Wythes M, Kung PP. Optimization of Potent, Selective, and Orally Bioavailable Pyrrolodinopyrimidine-Containing Inhibitors of Heat Shock Protein 90. Identification of Development Candidate 2-Amino-4-{4-chloro-2-[2-(4-fluoro-1H-pyrazol-1-yl)ethoxy]-6-methylphenyl} -N-(2,2-difluoropropyl)-5,7-dihydro-6H-pyrrolo[3,4-d]pyrimidine-6-carboxam ide. J Med Chem. 2011 Apr 20. PMID:21438541 doi:10.1021/jm200128m
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