chicken df 1 fibroblast cells (ATCC)
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Chicken Df 1 Fibroblast Cells, supplied by ATCC, used in various techniques. Bioz Stars score: 97/100, based on 1376 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
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Average 97 stars, based on 1376 article reviews
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1) Product Images from "Highly efficient gene editing via targeted Cas9 insertion into chicken housekeeping gene"
Article Title: Highly efficient gene editing via targeted Cas9 insertion into chicken housekeeping gene
Journal: Poultry Science
doi: 10.1016/j.psj.2026.106585
Figure Legend Snippet: CRISPR/Cas9-mediated targeting of ACTB and GAPDH genes in chicken DF-1 cells. (A, F) Schematic diagrams of the ACTB (A) and GAPDH (F) gene structures, showing CRISPR/Cas9 targeting sites. (B–E) Validation of ACTB targeting vectors. (B, D) T7E1 assays and (C, E) Sanger sequencing of DF-1 cells transfected with CRISPR/Cas9 constructs targeting the 3′ region (B, C) or intron (D, E). (G–J) Validation of GAPDH targeting vectors. (G, I) T7E1 assays and (H, J) Sanger sequencing of DF-1 cells transfected with constructs targeting the 3′ region (G, H) or intron (I, J). gRNA sequences are shown in red or blue, PAM sequences in yellow. Deleted bases are indicated by strikethrough lines, substitutions by italics, and insertions by lowercase letters.
Techniques Used: CRISPR, Biomarker Discovery, Sequencing, Transfection, Construct
Figure Legend Snippet: Validation of Cas9-GFP knock-in at the ACTB and GAPDH loci in DF-1 Cells. (A) Schematic illustration of the 3′ region targeted and tagging CRISPR/Cas9 approaches. (B) Detection of GFP in ACTB and GAPDH targeted chicken DF-1 cells. Non-transfected wild-type (WT) DF-1 cells are shown as a control, appearing without fluorescence under standard and fluorescence microscopy. Cells successfully transfected with the knock-in vector constructs targeting ACTB and GAPDH genes exhibit green fluorescence, indicating expression of the reporter gene. Scale bar, 100 µm. (C) Knock-in-specific junction PCR of targeted sites. (D, F) Sequencing analysis of the 3′ region targeted knock-in in chicken DF-1 cells. The schematic illustrates the gene locus following CRISPR/Cas9-mediated insertion of a donor cassette at the 3′ region targeting site via non-homologous end joining (NHEJ). Sanger sequencing of the junction PCR products confirmed integration of the donor sequence in the adjacent genomic regions with indel mutations. (E, G) This schematic depicts the post-integration structure of each gene following CRISPR/Cas9-NHEJ-mediated targeted gene tagging. The donor plasmid was designed with GFP flanked by genomic homology arms corresponding to sequences adjacent to the targeted intron. Sanger sequencing of the junction PCR products confirmed integration of the donor sequence in the adjacent genomic regions with indel mutation.
Techniques Used: Biomarker Discovery, Knock-In, CRISPR, Transfection, Control, Fluorescence, Microscopy, Plasmid Preparation, Construct, Expressing, Sequencing, Non-Homologous End Joining, Mutagenesis
Figure Legend Snippet: Validation of Cas9 activity in ACTB and GAPDH knock-in (KI) chicken DF-1 cells. (A) Gene structure of the intergenic region between DMRT1 and DMRT3 is depicted, showing exons as boxes and introns as lines, with the gRNA target site indicated. (B) T7E1 assay for KI DF-1 cells ( ACTB 3′ KI, ACTB tagging, GAPDH 3′ KI, and GAPDH tagging) followed by transfection with gRNA expressing vector. (C) Sanger sequencing analysis of KI chicken DF-1 cells ( GAPDH 3′ KI, and GAPDH tagging) transfected with DMRT gRNA are shown. gRNA sequences are shown in red, PAM sequences in yellow. The strikethrough lines indicate regions where base pairs have been deleted.
Techniques Used: Biomarker Discovery, Activity Assay, Knock-In, Transfection, Expressing, Plasmid Preparation, Sequencing
Figure Legend Snippet: Generation and validation of single-cell clones with Cas9-GFP knock-in at the GAPDH locus in chicken DF-1 cells. (A) Bright-field (BF) and GFP fluorescence images obtained after subculture following single-cell seeding. Each panel represents a clonal population derived from a single genome-edited cell. A total of 16 single-cell-derived clones were identified from the 96-well plates, of which 12 maintained consistent growth after subculture. Clone numbers correspond to the original 16 identified clones, and images of the 12 viable clones are shown. Scale bar, 100 µm. (B) PCR analysis of 12 single-cell-derived clones following subculture. Intron-targeted knock-in alleles were confirmed by 5′ junction PCR using junction-specific primers. The presence of residual wild-type (WT) alleles in individual clones was assessed using WT allele–specific primers. GAPDH PCR served as a genomic DNA quality control. (C) Relative Cas9 copy number was estimated by quantitative PCR (qPCR) using genomic DNA from each clone, normalized to the endogenous GAPDH reference locus (two copies in diploid cells). Bars represent the mean ± SD of technical qPCR replicates ( n = 3).
Techniques Used: Biomarker Discovery, Single Cell, Clone Assay, Knock-In, Fluorescence, Derivative Assay, Control, Real-time Polymerase Chain Reaction
Figure Legend Snippet: Characterization of single-cell-derived Cas9-expressing DF-1 clones. (A) Flow cytometry analysis of GFP expression levels in GAPDH tagging clones. (B) Median fluorescence intensity (MFI) of GFP in each clone. Data represents n = 3 biological replicates; bars show mean ± SD. ⁎⁎⁎⁎ P < 0.0001. (C) Western blot analysis of Cas9 and GAPDH protein expression in each clone. α-tubulin was used as a loading control. (D–E) Functional validation of genome editing capability in single-cell-derived Cas9-expressing DF-1 clones. A guide RNA (gRNA) expression vector targeting an internal region between DMRT1 and DMRT3 was transfected into each clone. As a control, wild-type (WT) DF-1 cells were co-transfected with the same gRNA vector and a transient Cas9 expression plasmid. (D) Genome editing activity was assessed by T7 endonuclease I (T7E1) assay. (E) Sanger sequencing of the target site confirmed indel formation at the expected genomic locus. gRNA sequences are shown in red, PAM sequences in yellow. Deleted bases are indicated by strikethrough lines, substitutions by italics, and insertions by lowercase letters.
Techniques Used: Single Cell, Derivative Assay, Expressing, Clone Assay, Flow Cytometry, Fluorescence, Western Blot, Control, Functional Assay, Biomarker Discovery, Plasmid Preparation, Transfection, Activity Assay, Sequencing


