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PiggyBac (PB) genetic screening allows identification of putative metastatic genes

ABSTRACT: PiggyBac (PB) genetic screening allows identification of putative metastatic genes

PROVIDER: PRJNA605234 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR11040024_1.fastq.gz	Fastqsanger.gz
	SRR11040024_2.fastq.gz	Fastqsanger.gz
	SRR11040025_1.fastq.gz	Fastqsanger.gz
	SRR11040025_2.fastq.gz	Fastqsanger.gz
	SRR11040026_1.fastq.gz	Fastqsanger.gz

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PiggyBac (PB) genetic screening allows identification of putative metastatic genes

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Project description:Deep mutational scanning (DMS) makes it possible to perform massively parallel quantification of the relationship between genetic variants and phenotypes of interest. However, the difficulties in introducing large variant libraries into mammalian cells greatly hinder DMS under physiological states. Here we developed two novel strategies for DMS library construction in mammalian cells, namely ‘piggyBac-in-vitro ligation’ and ‘piggyBac-in-vitro ligation-PCR’. For the first strategy, we took the ‘in-vitro ligation’ approach to prepare high-diversity linear dsDNAs, and integrate them into the mammalian genome with a piggyBac transposon system. For the second strategy, we further added a PCR step using the in-vitro ligation dsDNAs as templates, for the construction of high-content genome-integrated libraries via large-scale transfection. Both strategies could successfully establish genome-integrated EGFP-chromophore randomized libraries in HEK293T cells and enrich the green fluorescence-chromophore amino acid sequences. And we further identified a novel transcriptional activator peptide with the ‘piggyBac-in-vitro ligation-PCR’ strategy. Our novel strategies greatly facilitate the construction of large variant DMS library in mammalian cells, and may have great application potential in the future.

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PB enrichment culture

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