Similar Datasets
Project description:The inability to scalably and precisely measure the cell-type-specific activity of developmental enhancers is a bottleneck in genomics. To address this, we developed a “dual RNA”' system that decouples the detection and quantification tasks inherent to multiplex single-cell reporter assays. Together with RNA barcode circularization, the resulting single-cell quantitative expression reporters (scQers) facilitate the robust detection of which reporter(s) are present in which single cells, thereby providing high contrast readouts analogous to classic in situ assays but entirely from sequencing. Our dual RNA strategy extends the range of expression measurement into a regime fundamentally inaccessible with traditional multiplex reporter systems, yielding an accurate readout of mRNA levels spanning four orders of magnitude and a precision approaching the limit set by Poisson (shot) noise. As a proof-of-concept experiment, we profile over two hundred putative developmental cis-regulatory elements (CREs) for cell-type-specific activity in a multicellular in vitro model of early mammalian development, identifying dozens of active elements, ten of which function in an autonomous, cell-type-specific manner. These include constituents of the canonical Sox2 control region, exclusively active in pluripotent cells, multiple parietal endoderm-specific enhancers, including at the Foxa2 and Gata4 loci, and a compact pleiotropic enhancer at the Lamc1 locus. Looking forward, we envision that scQers will be broadly useful in developmental systems to quantitatively profile the activity of native, perturbed, or synthetic enhancers at scale, with high sensitivity and at single cell resolution.
2022-12-12 | GSE217678 | GEO
Project description:The inability to scalably and precisely measure the cell-type-specific activity of developmental enhancers is a bottleneck in genomics. To address this, we developed a “dual RNA”' system that decouples the detection and quantification tasks inherent to multiplex single-cell reporter assays. Together with RNA barcode circularization, the resulting single-cell quantitative expression reporters (scQers) facilitate the robust detection of which reporter(s) are present in which single cells, thereby providing high contrast readouts analogous to classic in situ assays but entirely from sequencing. Our dual RNA strategy extends the range of expression measurement into a regime fundamentally inaccessible with traditional multiplex reporter systems, yielding an accurate readout of mRNA levels spanning four orders of magnitude and a precision approaching the limit set by Poisson (shot) noise. As a proof-of-concept experiment, we profile over two hundred putative developmental cis-regulatory elements (CREs) for cell-type-specific activity in a multicellular in vitro model of early mammalian development, identifying dozens of active elements, ten of which function in an autonomous, cell-type-specific manner. These include constituents of the canonical Sox2 control region, exclusively active in pluripotent cells, multiple parietal endoderm-specific enhancers, including at the Foxa2 and Gata4 loci, and a compact pleiotropic enhancer at the Lamc1 locus. Looking forward, we envision that scQers will be broadly useful in developmental systems to quantitatively profile the activity of native, perturbed, or synthetic enhancers at scale, with high sensitivity and at single cell resolution.
2022-12-12 | GSE217689 | GEO
Project description:The inability to scalably and precisely measure the cell-type-specific activity of developmental enhancers is a bottleneck in genomics. To address this, we developed a “dual RNA”' system that decouples the detection and quantification tasks inherent to multiplex single-cell reporter assays. Together with RNA barcode circularization, the resulting single-cell quantitative expression reporters (scQers) facilitate the robust detection of which reporter(s) are present in which single cells, thereby providing high contrast readouts analogous to classic in situ assays but entirely from sequencing. Our dual RNA strategy extends the range of expression measurement into a regime fundamentally inaccessible with traditional multiplex reporter systems, yielding an accurate readout of mRNA levels spanning four orders of magnitude and a precision approaching the limit set by Poisson (shot) noise. As a proof-of-concept experiment, we profile over two hundred putative developmental cis-regulatory elements (CREs) for cell-type-specific activity in a multicellular in vitro model of early mammalian development, identifying dozens of active elements, ten of which function in an autonomous, cell-type-specific manner. These include constituents of the canonical Sox2 control region, exclusively active in pluripotent cells, multiple parietal endoderm-specific enhancers, including at the Foxa2 and Gata4 loci, and a compact pleiotropic enhancer at the Lamc1 locus. Looking forward, we envision that scQers will be broadly useful in developmental systems to quantitatively profile the activity of native, perturbed, or synthetic enhancers at scale, with high sensitivity and at single cell resolution.
2022-12-12 | GSE217681 | GEO
Project description:The inability to scalably and precisely measure the cell-type-specific activity of developmental enhancers is a bottleneck in genomics. To address this, we developed a “dual RNA”' system that decouples the detection and quantification tasks inherent to multiplex single-cell reporter assays. Together with RNA barcode circularization, the resulting single-cell quantitative expression reporters (scQers) facilitate the robust detection of which reporter(s) are present in which single cells, thereby providing high contrast readouts analogous to classic in situ assays but entirely from sequencing. Our dual RNA strategy extends the range of expression measurement into a regime fundamentally inaccessible with traditional multiplex reporter systems, yielding an accurate readout of mRNA levels spanning four orders of magnitude and a precision approaching the limit set by Poisson (shot) noise. As a proof-of-concept experiment, we profile over two hundred putative developmental cis-regulatory elements (CREs) for cell-type-specific activity in a multicellular in vitro model of early mammalian development, identifying dozens of active elements, ten of which function in an autonomous, cell-type-specific manner. These include constituents of the canonical Sox2 control region, exclusively active in pluripotent cells, multiple parietal endoderm-specific enhancers, including at the Foxa2 and Gata4 loci, and a compact pleiotropic enhancer at the Lamc1 locus. Looking forward, we envision that scQers will be broadly useful in developmental systems to quantitatively profile the activity of native, perturbed, or synthetic enhancers at scale, with high sensitivity and at single cell resolution.
2022-12-12 | GSE217679 | GEO
Project description:The inability to scalably and precisely measure the cell-type-specific activity of developmental enhancers is a bottleneck in genomics. To address this, we developed a “dual RNA”' system that decouples the detection and quantification tasks inherent to multiplex single-cell reporter assays. Together with RNA barcode circularization, the resulting single-cell quantitative expression reporters (scQers) facilitate the robust detection of which reporter(s) are present in which single cells, thereby providing high contrast readouts analogous to classic in situ assays but entirely from sequencing. Our dual RNA strategy extends the range of expression measurement into a regime fundamentally inaccessible with traditional multiplex reporter systems, yielding an accurate readout of mRNA levels spanning four orders of magnitude and a precision approaching the limit set by Poisson (shot) noise. As a proof-of-concept experiment, we profile over two hundred putative developmental cis-regulatory elements (CREs) for cell-type-specific activity in a multicellular in vitro model of early mammalian development, identifying dozens of active elements, ten of which function in an autonomous, cell-type-specific manner. These include constituents of the canonical Sox2 control region, exclusively active in pluripotent cells, multiple parietal endoderm-specific enhancers, including at the Foxa2 and Gata4 loci, and a compact pleiotropic enhancer at the Lamc1 locus. Looking forward, we envision that scQers will be broadly useful in developmental systems to quantitatively profile the activity of native, perturbed, or synthetic enhancers at scale, with high sensitivity and at single cell resolution.
2022-12-12 | GSE217686 | GEO
Project description:The inability to scalably and precisely measure the cell-type-specific activity of developmental enhancers is a bottleneck in genomics. To address this, we developed a “dual RNA”' system that decouples the detection and quantification tasks inherent to multiplex single-cell reporter assays. Together with RNA barcode circularization, the resulting single-cell quantitative expression reporters (scQers) facilitate the robust detection of which reporter(s) are present in which single cells, thereby providing high contrast readouts analogous to classic in situ assays but entirely from sequencing. Our dual RNA strategy extends the range of expression measurement into a regime fundamentally inaccessible with traditional multiplex reporter systems, yielding an accurate readout of mRNA levels spanning four orders of magnitude and a precision approaching the limit set by Poisson (shot) noise. As a proof-of-concept experiment, we profile over two hundred putative developmental cis-regulatory elements (CREs) for cell-type-specific activity in a multicellular in vitro model of early mammalian development, identifying dozens of active elements, ten of which function in an autonomous, cell-type-specific manner. These include constituents of the canonical Sox2 control region, exclusively active in pluripotent cells, multiple parietal endoderm-specific enhancers, including at the Foxa2 and Gata4 loci, and a compact pleiotropic enhancer at the Lamc1 locus. Looking forward, we envision that scQers will be broadly useful in developmental systems to quantitatively profile the activity of native, perturbed, or synthetic enhancers at scale, with high sensitivity and at single cell resolution.
2022-12-12 | GSE217683 | GEO
Project description:The inability to scalably and precisely measure the cell-type-specific activity of developmental enhancers is a bottleneck in genomics. To address this, we developed a “dual RNA”' system that decouples the detection and quantification tasks inherent to multiplex single-cell reporter assays. Together with RNA barcode circularization, the resulting single-cell quantitative expression reporters (scQers) facilitate the robust detection of which reporter(s) are present in which single cells, thereby providing high contrast readouts analogous to classic in situ assays but entirely from sequencing. Our dual RNA strategy extends the range of expression measurement into a regime fundamentally inaccessible with traditional multiplex reporter systems, yielding an accurate readout of mRNA levels spanning four orders of magnitude and a precision approaching the limit set by Poisson (shot) noise. As a proof-of-concept experiment, we profile over two hundred putative developmental cis-regulatory elements (CREs) for cell-type-specific activity in a multicellular in vitro model of early mammalian development, identifying dozens of active elements, ten of which function in an autonomous, cell-type-specific manner. These include constituents of the canonical Sox2 control region, exclusively active in pluripotent cells, multiple parietal endoderm-specific enhancers, including at the Foxa2 and Gata4 loci, and a compact pleiotropic enhancer at the Lamc1 locus. Looking forward, we envision that scQers will be broadly useful in developmental systems to quantitatively profile the activity of native, perturbed, or synthetic enhancers at scale, with high sensitivity and at single cell resolution.
2022-12-12 | GSE217680 | GEO
Project description:The inability to scalably and precisely measure the activity of developmental enhancers in multicellular systems is a bottleneck in genomics. Here, we develop a dual RNA cassette that decouples the detection and quantification tasks inherent to multiplex single-cell reporter assays. The resulting measurement of reporter expression is accurate over multiple orders of magnitude, with a precision approaching the limit set by Poisson counting noise. Together with RNA barcode circularization, these scalable single-cell quantitative expression reporters (scQers) provide high-contrast readouts, analogous to classic in situ assays, but entirely from sequencing. Screening >200 putative enhancers in a multicellular in vitro model of early mammalian development, we identified thirteen (eight previously uncharacterized) autonomous and cell-type-specific elements, such as constituents of the Sox2 control region exclusively active in pluripotent cells, endoderm-specific enhancers, including near Foxa2 and Gata4, and a compact pleiotropic enhancer at the Lamc1 locus. We further demonstrate that synthetic enhancer pairs generate cognate two-cell-type activity profiles and assess gain/loss-of-function multicellular expression phenotypes from enhancer variants with perturbed transcription factor binding sites. scQers can be applied in developmental systems to quantitatively characterise native, perturbed, and synthetic enhancers at scale, with high sensitivity and at single-cell resolution.
2023-10-17 | GSE245189 | GEO
Project description:The inability to scalably and precisely measure the activity of developmental enhancers in multicellular systems is a bottleneck in genomics. Here, we develop a dual RNA cassette that decouples the detection and quantification tasks inherent to multiplex single-cell reporter assays. The resulting measurement of reporter expression is accurate over multiple orders of magnitude, with a precision approaching the limit set by Poisson counting noise. Together with RNA barcode circularization, these scalable single-cell quantitative expression reporters (scQers) provide high-contrast readouts, analogous to classic in situ assays, but entirely from sequencing. Screening >200 putative enhancers in a multicellular in vitro model of early mammalian development, we identified thirteen (eight previously uncharacterized) autonomous and cell-type-specific elements, such as constituents of the Sox2 control region exclusively active in pluripotent cells, endoderm-specific enhancers, including near Foxa2 and Gata4, and a compact pleiotropic enhancer at the Lamc1 locus. We further demonstrate that synthetic enhancer pairs generate cognate two-cell-type activity profiles and assess gain/loss-of-function multicellular expression phenotypes from enhancer variants with perturbed transcription factor binding sites. scQers can be applied in developmental systems to quantitatively characterise native, perturbed, and synthetic enhancers at scale, with high sensitivity and at single-cell resolution.
2023-10-17 | GSE245191 | GEO
Project description:The inability to scalably and precisely measure the activity of developmental enhancers in multicellular systems is a bottleneck in genomics. Here, we develop a dual RNA cassette that decouples the detection and quantification tasks inherent to multiplex single-cell reporter assays. The resulting measurement of reporter expression is accurate over multiple orders of magnitude, with a precision approaching the limit set by Poisson counting noise. Together with RNA barcode circularization, these scalable single-cell quantitative expression reporters (scQers) provide high-contrast readouts, analogous to classic in situ assays, but entirely from sequencing. Screening >200 putative enhancers in a multicellular in vitro model of early mammalian development, we identified thirteen (eight previously uncharacterized) autonomous and cell-type-specific elements, such as constituents of the Sox2 control region exclusively active in pluripotent cells, endoderm-specific enhancers, including near Foxa2 and Gata4, and a compact pleiotropic enhancer at the Lamc1 locus. We further demonstrate that synthetic enhancer pairs generate cognate two-cell-type activity profiles and assess gain/loss-of-function multicellular expression phenotypes from enhancer variants with perturbed transcription factor binding sites. scQers can be applied in developmental systems to quantitatively characterise native, perturbed, and synthetic enhancers at scale, with high sensitivity and at single-cell resolution.
2023-10-17 | GSE245190 | GEO