pam site modification in hdr template (Benchling Inc)
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Pam Site Modification In Hdr Template, supplied by Benchling Inc, used in various techniques. Bioz Stars score: 90/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
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Average 90 stars, based on 1 article reviews
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1) Product Images from "CRISPR/Cas9 Mediated Fluorescent Tagging of Endogenous Proteins in Human Pluripotent Stem Cells"
Article Title: CRISPR/Cas9 Mediated Fluorescent Tagging of Endogenous Proteins in Human Pluripotent Stem Cells
Journal: Current protocols in human genetics
doi: 10.1002/cphg.52
Figure Legend Snippet: Example schematic for fluorescent reporter HDR template design and integration at a target gene. Here, the fluorescent tag will be placed at the N-terminus of the encoded target protein. A) Representation of the wild type hiPSC sequence. Guide RNA target sequence (shown in red) should target within 30 bp of the mutation start site. M indicates start codon coding for methionine. B) HDR template design schematic. In a 2000 bp gBlock fragment, design the vector as shown. We recommend a glycine-serine linker with amino acid sequence GGGGSGGGGSGGGGS. C) hiPSC sequence after HDR template integration. Primers at the indicated regions can confirm successful eGFP template vector integration.
Techniques Used: Sequencing, Mutagenesis, Plasmid Preparation
Figure Legend Snippet: Timeline for nucleofection, subcloning, and expansion of fluorescently-tagged hiPSCs. Assume a daily mTeSR1 media change for all hiPSC steps. Rho kinase inhibitor is recommended for passaging and steps where hiPSCs are plated sparsely or as single cells. A) Steps from nucleofection until initial clone picking. Begin by nucleofecting 80% confluent, low passage hiPSCs and conduct puromycin selection. After selection, allow clones to grow before replating cells in a serial dilution at very low density. Then, identify individual cells under a microscope and allow single, monoclonal colonies to grow to 100 cells in rho kinase inhibitor before picking into a 96-well plate. B) Steps from clone picking to positive HDR clone identification. After repicking monoclonal hiPSC colonies into a new 96-well plate, allow the colonies to grow in rho kinase inhibitor before redistributing them within the same well. Then, allow colonies to into 95% confluent monolayers before passaging half into a new plate while simultaneously harvesting half for HDR verification with DNA extraction and PCR/gel electrophoresis. Once positive clones are identified, proceed to C. If no positive clones are identified, re-nucleofect with the same guide RNA or order new guide RNAs. C) Once positive clones are identified, grow the clones in 96-well plates and passage positive clones into 24 and 6-well plates, consecutively. After clones are grown to 6-well plate format, freeze a subset of clones before passaging and expanding for long-term culture.
Techniques Used: Subcloning, Passaging, Selection, Clone Assay, Serial Dilution, Microscopy, DNA Extraction, Nucleic Acid Electrophoresis
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