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      Modulatory profiling identifies mechanisms of small molecule-induced cell death.

      Proceedings of the National Academy of Sciences of the United States of America
      Cell Death, drug effects, physiology, Cell Line, Humans, Microtubules, Signal Transduction, bcl-2 Homologous Antagonist-Killer Protein, bcl-2-Associated X Protein

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          Abstract

          Cell death is a complex process that plays a vital role in development, homeostasis, and disease. Our understanding of and ability to control cell death is impeded by an incomplete characterization of the full range of cell death processes that occur in mammalian systems, especially in response to exogenous perturbations. We present here a general approach to address this problem, which we call modulatory profiling. Modulatory profiles are composed of the changes in potency and efficacy of lethal compounds produced by a second cell death-modulating agent in human cell lines. We show that compounds with the same characterized mechanism of action have similar modulatory profiles. Furthermore, clustering of modulatory profiles revealed relationships not evident when clustering lethal compounds based on gene expression profiles alone. Finally, modulatory profiling of compounds correctly predicted three previously uncharacterized compounds to be microtubule-destabilizing agents, classified numerous compounds that act nonspecifically, and identified compounds that cause cell death through a mechanism that is morphologically and biochemically distinct from previously established ones.

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          Author and article information

          Journal
          21896738
          3182736
          10.1073/pnas.1106149108

          Chemistry
          Cell Death,drug effects,physiology,Cell Line,Humans,Microtubules,Signal Transduction,bcl-2 Homologous Antagonist-Killer Protein,bcl-2-Associated X Protein

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