A synthetic circuit for buffering gene dosage variation between individual mammalian cells.
A synthetic circuit for buffering gene dosage variation between individual mammalian cells.
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一种用于缓冲单个哺乳动物细胞之间基因剂量差异的合成电路。
DOI:
10.1038/s41467-021-23889-0
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发表时间:
2021-07-05
影响因子:
16.6
通讯作者:
St-Pierre F
中科院分区:
文献类型:
--
作者:
Yang J;Lee J;Land MA;Lai S;Igoshin OA;St-Pierre F
Precise control of gene expression is critical for biological research and biotechnology. However, transient plasmid transfections in mammalian cells produce a wide distribution of copy numbers per cell, and consequently, high expression heterogeneity. Here, we report plasmid-based synthetic circuits – Equalizers – that buffer copy-number variation at the single-cell level. Equalizers couple a transcriptional negative feedback loop with post-transcriptional incoherent feedforward control. Computational modeling suggests that the combination of these two topologies enables Equalizers to operate over a wide range of plasmid copy numbers. We demonstrate experimentally that Equalizers outperform other gene dosage compensation topologies and produce as low cell-to-cell variation as chromosomally integrated genes. We also show that episome-encoded Equalizers enable the rapid generation of extrachromosomal cell lines with stable and uniform expression. Overall, Equalizers are simple and versatile devices for homogeneous gene expression and can facilitate the engineering of synthetic circuits that function reliably in every cell. Transient plasmid transfection produces a wide distribution of copy numbers and expression heterogeneity. Here the authors present synthetic circuits called Equalizers that buffer copy number variation at the single-cell level and minimize cell-to-cell expression variability.
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影响因子:
16.6
作者:
Jones RD;Qian Y;Siciliano V;DiAndreth B;Huh J;Weiss R;Del Vecchio D
通讯作者:
Del Vecchio D
影响因子:
2.1
作者:
Ghasemi A;Zahediasl S
通讯作者:
Zahediasl S
影响因子:
3.7
作者:
Kim JH;Lee SR;Li LH;Park HJ;Park JH;Lee KY;Kim MK;Shin BA;Choi SY
通讯作者:
Choi SY
影响因子:
4.6
作者:
Kintaka R;Makanae K;Moriya H
通讯作者:
Moriya H
影响因子:
3.7
作者:
Lin, Chi-Yen;Huang, Zhen;Niu, Li
通讯作者:
Niu, Li