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 / plasma cell differentiation / paraspeckles / germinal center formation / pyramidal neuron differentiation / regulation of immune system process / type 2 immune response / positive regulation of regulatory T cell differentiation / T-helper 2 cell differentiation / negative regulation of B cell apoptotic process / positive regulation of cell motility / negative regulation of Rho protein signal transduction / FOXO-mediated transcription of cell death genes / negative regulation of cell-matrix adhesion / regulation of T cell proliferation / negative regulation of Notch signaling pathway / TP53 regulates transcription of several additional cell death genes whose specific roles in p53-dependent apoptosis remain uncertain / B cell proliferation / regulation of cell differentiation / negative regulation of cellular senescence / Rho protein signal transduction / regulation of immune response / erythrocyte development / heterochromatin formation / positive regulation of B cell proliferation / regulation of cytokine production / positive regulation of neuron differentiation / cell-matrix adhesion / transcription corepressor binding / cell motility / cell morphogenesis / protein localization / negative regulation of cell growth / chromatin DNA binding / DNA-binding transcription repressor activity, RNA polymerase II-specific / sequence-specific double-stranded DNA binding / regulation of cell population proliferation / regulation of inflammatory response / actin cytoskeleton organization / spermatogenesis / Interleukin-4 and Interleukin-13 signaling / DNA-binding transcription factor binding / sequence-specific DNA binding / transcription by RNA polymerase II / inflammatory response / positive regulation of apoptotic process / RNA polymerase II cis-regulatory region sequence-specific DNA binding / DNA-binding transcription factor activity / negative regulation of DNA-templated transcription / DNA damage response / chromatin binding / nucleolus / Golgi apparatus / negative regulation of transcription by RNA polymerase II / nucleoplasm / identical protein binding / nucleus / metal ion binding 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.