TARGATT™ CHO-K1 Knock-in Kit (H11) for Antibody Library Screening (FACS)

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TARGATT™ CHO-K1 Knock-in Kit (H11)

for Antibody Library Screening (FACS)

Advantages of using TARGATT™ master cell lines for gene knock-in:

  • High efficiency, unidirectional integration
  • Site-specific, stable knock-in cell line generation
  • Single copy gene integration into safe harbor locus
  • Gene expression from an active, intergenic locus
  • Easy-to-use protocol requiring transfection of only one (donor) plasmid

Overview

The TARGATT™ CHO-K1 Knock-in Kit (H11) for Antibody Library Screening (FACS) is designed for fast and site-specific knock-in in Chinese Hamster Ovary (CHO) cells using an easy-to-use gene knock-in approach. The master cell line provided in this kit contains the “attP” docking site engineered into the CHO H11 safe harbor locus in the genome. Any gene of interest can be cloned into the provided TARGATT™ “attB” cloning plasmid, and transfected into the master cell line for generating a stable knock-in cell line. The TARGATT™ integrase-based technology enables efficient DNA integration and high-level gene expression without disrupting internal genes. The TARGATT™ CHO-K1 cell line can therefore be used for uniform, site-specific gene knock-in, generation of isogenic cell lines, and amplification strategies for isolating high-expression cells, without the need for single-cell cloning.

The TARGATT™ CHO-K1 Knock-in Kit (H11) for Antibody Library Screening (FACS) includes the TARGATT™ 41 attB-mCherry-P2A-LacZ (library) Cloning Plasmid which contains the fluorescent marker mCherry. This kit is ideal for fluorescence-activated cell sorting (FACS) and is suitable for research applications involving gene library construction.

Our knock-in strategy

Figure 1. Schematic representation of TARGATT™ site-specific transgene integration mediated by integrase in the TARGATT™ CHO-K1 Master Cell Line. The TARGATT™ CHO-K1 (H11) Master Cell Line was engineered with the attP landing pad at the CHO H11 safe harbor locus. The TARGATT™ donor vector containing the attB site is used to clone the transgene. The integrase from the TARGATT™ Integrase Plasmid catalyzes an irreversible reaction between the attP site in the genome and attB site in the donor vector, resulting in site specific integration of the gene of interest at the selected locus.

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