BL107 SWiFT sort transcriptome
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ABSTRACT:
PROVIDER: PRJEB14198 | ENA |
REPOSITORIES: ENA
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Project description:Mammalian SWI/SNF (BAF) chromatin remodeling complexes modulate DNA accessibility and gene expression, however, the mechanisms by which they are targeted on chromatin remain incompletely understood. Here, we define SWIFT (SWI/SNF Ig-Fold for Transcription Factor Interactions), found on the SMARCD family of subunits within the core module as an evolutionarily conserved, broad transcription factor (TF) binding platform. SWIFT is necessary and sufficient for direct interaction with the transactivation domain of a lineage-specific TF, PU.1, in vitro and in cells, with a single amino acid mutation in SWIFT able to disrupt PU.1-mSWI/SNF binding, inhibit site-specific complex targeting and activity, and attenuate oncogenic gene expression and proliferation of PU.1-dependent cancer cells. Dominant expression of SWIFT in isolation across cell types sequesters mSWI/SNF-interacting TFs and poisons TF-addicted cancer cells. Finally, TFs interact with SWIFT in a SMARCD paralog-specific manner, informing approaches for modulation of cell type- and disease-specific transcription.
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Project description:Mammalian SWI/SNF (BAF) chromatin remodeling complexes modulate DNA accessibility and gene expression, however, the mechanisms by which they are targeted on chromatin remain incompletely understood. Here, we define SWIFT (SWI/SNF Ig-Fold for Transcription Factor Interactions), found on the SMARCD family of subunits within the core module as an evolutionarily conserved, broad transcription factor (TF) binding platform. SWIFT is necessary and sufficient for direct interaction with the transactivation domain of a lineage-specific TF, PU.1, in vitro and in cells, with a single amino acid mutation in SWIFT able to disrupt PU.1-mSWI/SNF binding, inhibit site-specific complex targeting and activity, and attenuate oncogenic gene expression and proliferation of PU.1-dependent cancer cells. Dominant expression of SWIFT in isolation across cell types sequesters mSWI/SNF-interacting TFs and poisons TF-addicted cancer cells. Finally, TFs interact with SWIFT in a SMARCD paralog-specific manner, informing approaches for modulation of cell type- and disease-specific transcription.
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Project description:Mammalian SWI/SNF (BAF) chromatin remodeling complexes modulate DNA accessibility and gene expression, however, the mechanisms by which they are targeted on chromatin remain incompletely understood. Here, we define SWIFT (SWI/SNF Ig-Fold for Transcription Factor Interactions), found on the SMARCD family of subunits within the core module as an evolutionarily conserved, broad transcription factor (TF) binding platform. SWIFT is necessary and sufficient for direct interaction with the transactivation domain of a lineage-specific TF, PU.1, in vitro and in cells, with a single amino acid mutation in SWIFT able to disrupt PU.1-mSWI/SNF binding, inhibit site-specific complex targeting and activity, and attenuate oncogenic gene expression and proliferation of PU.1-dependent cancer cells. Dominant expression of SWIFT in isolation across cell types sequesters mSWI/SNF-interacting TFs and poisons TF-addicted cancer cells. Finally, TFs interact with SWIFT in a SMARCD paralog-specific manner, informing approaches for modulation of cell type- and disease-specific transcription.
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