TRYPHOSTIN-ANALOGS FOR THE TREATMENT OF CELL PROLIFERATIVE DISEASES
申请人:Donato Nicholas J
公开号:US20100292229A1
公开(公告)日:2010-11-18
The present invention concerns compounds and their use to treat cell proliferative diseases such as cancer. In general aspects, compounds of the present invention are tyrphostin-like in structure. Compounds of the present invention, in certain embodiments, display significant potency by causing, for example, inhibition of Stat3 activation, reduction in c-myc protein levels and/or induction of apoptosis in tumor cells. In general aspects, compounds of the present invention induce one or more of these activities at nanomolar concentrations and typically function through a unique mechanism involving the induction of stress granules that bind specific signaling molecules and prevent them from participating in signal transduction and oncogenesis.
With the goal of developing small molecules as novel regulators of signal transduction and apoptosis, a series of tyrphostin-like compounds were synthesized and screened for their activity against MM-1 (multiple myeloma) cells and other cell lines representing this malignancy. Synthesis was completed in solution-phase initially and then adopted to solid-phase for generating a more diverse set of compounds. A positive correlation was noted between compounds capable of inducing apoptosis and their modulation of protein ubiquitination. Further analysis suggested that ubiquitin modulation occurs through inhibition of cellular deubiquitinase activity. Bulky groups on the sidechain near the alpha,beta-unsaturated ketone caused a complete loss of activity, whereas cyclization on the opposite side was tolerated. Theoretical calculations at the B3LYP/LACV3P** level were completed on each molecule, and the resulting molecular orbitals and Fukui reactivity values for C(beta) carbon were utilized in developing a model to explain the compound activity. (C) 2011 Elsevier Ltd. All rights reserved.
[EN] SIGNALING PROTEIN MODULATORS AS THERAPEUTIC AGENTS<br/>[FR] MODULATEURS DE PROTÉINE SIGNAL EN TANT QU'AGENTS THÉRAPEUTIQUES
申请人:UNIV TEXAS
公开号:WO2008005954A2
公开(公告)日:2008-01-10
[EN] The present invention concerns compounds and their use to treat cell proliferative diseases such as cancer. In general aspects, compounds of the present invention are tyrphostin-like in structure. Compounds of the present invention, in certain embodiments, display significant potency by causing, for example, inhibition of Stat3 activation, reduction in c-myc protein levels and/or induction of apoptosis in tumor cells. In general aspects, compounds of the present invention induce one or more of these activities at nanomolar concentrations and typically function through a unique mechanism involving the induction of stress granules that bind specific signaling molecules and prevent them from participating in signal transduction and oncogenesis. [FR] La présente invention concerne des composés et leur utilisation pour traiter des maladies associées à la prolifération cellulaire telles que le cancer. En général, les composés de la présente invention présentent une structure de type tyrphostine. Selon certains modes de réalisation, les composés de la présente invention font preuve d'un pouvoir significatif en provoquant, par exemple, l'inhibition de l'activation des protéines Stat3, la réduction des niveaux de protéines c-myc et/ou l'induction de l'apoptose de cellules tumorales. En général, les composés de la présente invention induisent une ou plusieurs de ces activités à des concentrations nanomolaires et ils agissent généralement selon un mécanisme unique impliquant l'induction de granules de stress qui se lient à des molécules de signal spécifiques et les empêchent de participer à la transduction du signal et à l'oncogenèse.