regulation of memory T cell differentiation / negative regulation of mitotic cell cycle DNA replication / intronic transcription regulatory region sequence-specific DNA binding / negative regulation of isotype switching to IgE isotypes / negative regulation of plasma cell differentiation / negative regulation of T-helper 2 cell differentiation / isotype switching to IgE isotypes / negative regulation of mast cell cytokine production / regulation of germinal center formation / negative regulation of mononuclear cell proliferation ...regulation of memory T cell differentiation / negative regulation of mitotic cell cycle DNA replication / intronic transcription regulatory region sequence-specific DNA binding / negative regulation of isotype switching to IgE isotypes / negative regulation of plasma cell differentiation / negative regulation of T-helper 2 cell differentiation / isotype switching to IgE isotypes / negative regulation of mast cell cytokine production / regulation of germinal center formation / negative regulation of mononuclear cell proliferation / paraspeckles / plasma cell differentiation / germinal center formation / regulation of immune system process / pyramidal neuron differentiation / type 2 immune response / positive regulation of regulatory T cell differentiation / T-helper 2 cell differentiation / positive regulation of cell motility / negative regulation of B cell apoptotic process / negative regulation of Rho protein signal transduction / erythrocyte development / FOXO-mediated transcription of cell death genes / regulation of cell differentiation / TP53 regulates transcription of several additional cell death genes whose specific roles in p53-dependent apoptosis remain uncertain / regulation of T cell proliferation / B cell proliferation / negative regulation of cellular senescence / negative regulation of cell-matrix adhesion / negative regulation of Notch signaling pathway / regulation of immune response / Rho protein signal transduction / positive regulation of B cell proliferation / positive regulation of neuron differentiation / regulation of cytokine production / cell-matrix adhesion / transcription corepressor binding / cell motility / chromatin DNA binding / negative regulation of cell growth / DNA-binding transcription repressor activity, RNA polymerase II-specific / cell morphogenesis / sequence-specific double-stranded DNA binding / intracellular protein localization / heterochromatin formation / regulation of cell population proliferation / actin cytoskeleton organization / regulation of inflammatory response / spermatogenesis / Interleukin-4 and Interleukin-13 signaling / DNA-binding transcription factor binding / sequence-specific DNA binding / transcription by RNA polymerase II / positive regulation of apoptotic process / RNA polymerase II cis-regulatory region sequence-specific DNA binding / inflammatory response / DNA-binding transcription factor activity / negative regulation of DNA-templated transcription / DNA damage response / chromatin binding / nucleolus / negative regulation of transcription by RNA polymerase II / Golgi apparatus / zinc ion binding / nucleoplasm / identical protein binding / nucleus 類似検索 - 分子機能
National Institutes of Health/National Cancer Institute (NIH/NCI)
R01CA218278
米国
National Institutes of Health/National Cancer Institute (NIH/NCI)
R01CA218278
米国
Swiss National Science Foundation
174331
スイス
The Mark Foundation
米国
引用
ジャーナル: Nature / 年: 2020 タイトル: Small-molecule-induced polymerization triggers degradation of BCL6. 著者: Mikołaj Słabicki / Hojong Yoon / Jonas Koeppel / Lena Nitsch / Shourya S Roy Burman / Cristina Di Genua / Katherine A Donovan / Adam S Sperling / Moritz Hunkeler / Jonathan M Tsai / Rohan ...著者: Mikołaj Słabicki / Hojong Yoon / Jonas Koeppel / Lena Nitsch / Shourya S Roy Burman / Cristina Di Genua / Katherine A Donovan / Adam S Sperling / Moritz Hunkeler / Jonathan M Tsai / Rohan Sharma / Andrew Guirguis / Charles Zou / Priya Chudasama / Jessica A Gasser / Peter G Miller / Claudia Scholl / Stefan Fröhling / Radosław P Nowak / Eric S Fischer / Benjamin L Ebert / 要旨: Effective and sustained inhibition of non-enzymatic oncogenic driver proteins is a major pharmacological challenge. The clinical success of thalidomide analogues demonstrates the therapeutic efficacy ...Effective and sustained inhibition of non-enzymatic oncogenic driver proteins is a major pharmacological challenge. The clinical success of thalidomide analogues demonstrates the therapeutic efficacy of drug-induced degradation of transcription factors and other cancer targets, but a substantial subset of proteins are resistant to targeted degradation using existing approaches. Here we report an alternative mechanism of targeted protein degradation, in which a small molecule induces the highly specific, reversible polymerization of a target protein, followed by its sequestration into cellular foci and subsequent degradation. BI-3802 is a small molecule that binds to the Broad-complex, Tramtrack and Bric-à-brac (BTB) domain of the oncogenic transcription factor B cell lymphoma 6 (BCL6) and leads to the proteasomal degradation of BCL6. We use cryo-electron microscopy to reveal how the solvent-exposed moiety of a BCL6-binding molecule contributes to a composite ligand-protein surface that engages BCL6 homodimers to form a supramolecular structure. Drug-induced formation of BCL6 filaments facilitates ubiquitination by the SIAH1 E3 ubiquitin ligase. Our findings demonstrate that a small molecule such as BI-3802 can induce polymerization coupled to highly specific protein degradation, which in the case of BCL6 leads to increased pharmacological activity compared to the effects induced by other BCL6 inhibitors. These findings open new avenues for the development of therapeutic agents and synthetic biology.