Journal: Cell reports

Article Title: Integration of T helper and BCR signals governs enhanced plasma cell differentiation of memory B cells by regulation of CD45 phosphatase activity

doi: 10.1016/j.celrep.2021.109525

Figure Lengend Snippet: (A) Flow cytometry histogram showing surface staining of Galectin-1 in naive (gray), memory (blue), and PCs (red) in human peripheral blood B cells (left panel). Isotype control is shown by gray-dotted histogram. Graph shows fold increase in surface Galectin-1 staining (MFI) relative to naive B cells (n = 4). Contour plot depicts CD45 activity versus Galectin-1 surface staining in B cells (blue) and PCs (CD138 hi CD38 hi ) (red) backgated to CD45 activity hi Galectin-1 hi cells (right panel). (B) Histograms show CD45 activity (left panel), Galectin-1 staining (middle panel), and MEM-55 staining (right panel) in CTR- or NA-treated B cells. Graphs show fold increase in MFI of CD45 phosphatase activity (left lower panel) and Galectin-1 staining (right lower panel) relative to CTR-treated B cells (n = 6). (C) Upper panels: Dot plots show expression of IRF4 and BLIMP1 in naive B cells and MBCs differentiated toward ASCs in the presence of 10 and 100 µM OTX008 or VEH. Graph shows % IRF4 + BLIMP1 + B cells in MBC cultures. Lower panels: Galectin-1 surface expression (left panel) and CD45 phosphatase activity (right panel) in VEH-treated (blue histogram) and OTX-treated (blue dotted histogram) MBCs. Graphs show MFI values of Galectin-1 staining (left) and CD45 activity (right) (n = 5). (D) Flow cytometry dot plots show CD45 activity versus Galectin-1 surface staining in the presence of medium or rhGAL-1 (left panels). Histogram shows CD45 phosphatase activity of Galectin-1 hi B cells with rhGAL1 (blue) and total B cells (gray) (middle panel). Graph shows MFI values of CD45 activity in total B cells (gray histogram) and GAL-1 hi (blue open histogram) B cells (right panel) (n = 6). (E) Representative localization of Galectin-1 relative to pSyk, pCAP-SP1, and CD45 in human B cells. The panels (left) present signals from the individual fluorescence detectors, and the center image is a merge of all four channels. The graph (right) shows the average (z axis) fluorescence intensity for each (x axis) pixel number in the indicated area (below graph and dotted area on center figure). (F) CoIP of CD45 of B cell lysates and immunoblotted with anti-CD45 (left) or anti-Galectin-1 (right). (G) Flow cytometry histogram showing CD45 phosphatase activity in gated live Raji B cells with CRISPR-Cas9 knockdown of CD45 (blue), Galectin-1 (green), and wild-type (red). Related to and . *p < 0.05, **p < 0.01.

Article Snippet: In brief, ablation of the LGALS1 gene from the Raji cell line was achieved by electroporation of target cells with the Neon Transfection system (Thermo Fischer) using the Cas9/gRNA vector pSpCas9(BB)-2A-GFP (PX458), generously provided by Dr. Feng Zhang through the Addgene repository (Addgene #48138) utilizing the following guide RNA template sequence: hCD45: 5´-TGGCTTAAACTCTTGGCATT-3´, hLGALS_s1: 5´-CGCCGTGGGCGTTGAAGCGA-3´.

Techniques: Flow Cytometry, Staining, Activity Assay, Expressing, Fluorescence, CRISPR

Journal: Cell reports

Article Title: Integration of T helper and BCR signals governs enhanced plasma cell differentiation of memory B cells by regulation of CD45 phosphatase activity

doi: 10.1016/j.celrep.2021.109525

Figure Lengend Snippet: KEY RESOURCES TABLE

Article Snippet: In brief, ablation of the LGALS1 gene from the Raji cell line was achieved by electroporation of target cells with the Neon Transfection system (Thermo Fischer) using the Cas9/gRNA vector pSpCas9(BB)-2A-GFP (PX458), generously provided by Dr. Feng Zhang through the Addgene repository (Addgene #48138) utilizing the following guide RNA template sequence: hCD45: 5´-TGGCTTAAACTCTTGGCATT-3´, hLGALS_s1: 5´-CGCCGTGGGCGTTGAAGCGA-3´.

Techniques: Negative Control, Recombinant, Purification, Staining, Expressing, Lysis, Immunoprecipitation, Plasmid Preparation, Enzyme-linked Immunosorbent Assay, Blocking Assay, Cell Isolation, Software, Microscopy

Journal: eLife

Article Title: Interplay of adherens junctions and matrix proteolysis determines the invasive pattern and growth of squamous cell carcinoma

doi: 10.7554/eLife.76520

Figure Lengend Snippet: ( a ) Heatmaps show how varying the cancer cell proteolysis value (x axis) impacts on different metrics in the absence of fibroblasts. WT indicates the ‘wild-type’ value based on experimental parameterisation using A431 cancer cells. ( b ) Heatmaps show the differential values resulting from the inclusion of fibroblasts (effectively a comparison of and Figure 3—figure supplement 1a). Red indicates an increase when fibroblasts are present, dark blue a reduction when in the presence of fibroblasts. ( c ) Images show simulation output initiated with a spheroid, no fibroblasts, a uniform chemotactic cue, and varying cancer cell proteolysis. Left panel – day 7output in the absence of permissive track, right panel – day 5 output in the presence of permissive track. ( d ) Heatmaps show how varying the distribution of extracellular matrix (ECM) density in organotypic simulations impacts on different metrics when fibroblasts are included in all simulations. Parametrisation and colourmap as in ( a ). ‘Aligned’ refers to alternating tracks of high and low ECM density parallel to direction of invasion. ‘Chessboard’ refers to three-dimensional (3D) chessboard distribution of high and low ECM density values. ( e ) Heatmaps show how varying the cancer cell proteolysis value (x axis) impacts on different metrics when cancer-cell proliferation rate is halved, and fibroblasts are included in all simulations. Parametrisation and colourmap as in ( a ). ( f ) Western blots of MMP14, alpha-catenin, vimentin, fibronectin, and β-actin in A431 cells engineered using Crispr/Cas9 to delete MMP14 or CTNNA1, or to over-express MMP14. ( g ) Images show F-actin (magenta) and degraded collagen I represented by fluorescence of DQ collagen I (green) in 3D culture of A431 cells genetically engineered as indicated. ( h ) Plot shows the quantification of strand width in spheroid invasion assay of A431 WT or MMP14 over-expressing cells, which are pre-treated with mitomycin C. Unpaired t-test was performed. Error bars indicate 95% confidence intervals, one dot represents one strand. For comparison, light blue lines show the same metrics in the absence of mitomycin C (data from ). Figure 3—figure supplement 1—source data 1. Quantification of invading strand width in A431 WT and MMP14 OE cells pretreated with mitomycin C. Figure 3—figure supplement 1—source data 2. Uncropped western blot images of WT, MMP14 KO, MMP14 OE, CTNNA1 KO, MMP14 KO/CTNNA1 KO, and MMP14 OE/CTNNA1 KO A431 lysates stained for MMP14, alpha-catenin, vimentin, fibronectin, or β-actin.

Article Snippet: Transfected construct ( Homo-sapiens ) , px458 CTNNA1 gRNA , Santa Cruz , sc-419475 , .

Techniques: Comparison, Western Blot, CRISPR, Fluorescence, Invasion Assay, Expressing, Staining

Journal: eLife

Article Title: Interplay of adherens junctions and matrix proteolysis determines the invasive pattern and growth of squamous cell carcinoma

doi: 10.7554/eLife.76520

Figure Lengend Snippet: ( a ) Principal component analysis plots show the metrics derived from over 2000 simulations in the presence of fibroblasts covering variation in cancer cell–cancer cell adhesion with values indicated by the intensity of magenta, cancer cell proteolysis (not colour coded), and cancer cell–matrix adhesion (not colour coded). ( b ) Heatmaps show how varying the cancer cell–cancer cell adhesion value (x axis) impacts on different metrics when fibroblasts are included in all simulations. WT indicates the ‘wild-type’ value based on experimental parameterisation using A431 cancer cells. Yellow indicates a high value, dark blue a low value. ( c ) Images show the effect of modulating cancer cell-cell adhesion via Crispr KO of CTNNA1 in cancer cells (green) in both organotypic and spheroid assays including fibroblasts (magenta). Scale bar = 100 μm. ( d ) Quantification of three biological replicates of the experiment shown in panel (c) with strand length, strand width, and tapering shown – 1 unit is equivalent to 0.52 μm. Unpaired t-test was performed. Error bars indicate 95% confidence intervals, one dot represents one strand. ( e ) Plots show the track invasion score with varying cancer cell–cancer cell adhesion in simulations lacking fibroblasts but with a single permissive track favouring invasion. Cartoons indicate the initial set up of cell positions and the directional cue in the simulation. Figure 5—source data 1. Quantification of invading strand length, width, and tapering in A431 cells with/without CTNNA1 manipulation.

Article Snippet: Transfected construct ( Homo-sapiens ) , px458 CTNNA1 gRNA , Santa Cruz , sc-419475 , .

Techniques: Derivative Assay, CRISPR

Journal: eLife

Article Title: Interplay of adherens junctions and matrix proteolysis determines the invasive pattern and growth of squamous cell carcinoma

doi: 10.7554/eLife.76520

Figure Lengend Snippet: ( a ) Images show the β-catenin (magenta), F-actin (orange), DNA (blue), and active myosin (pS19-MLC - green) networks in control A431 and CTNNA1 KO A431 cells.( b ) Images β-catenin (magenta), F-actin (orange), DNA (blue), and active myosin (pS19-MLC - green) networks in control A431- and 10-μM Y27632-treated cells. Scale bar = 20 μm. ( c ) Images show β-catenin (magenta), F-actin (orange), DNA (blue), and active myosin (pS19-MLC - green) networks in control A431 ROCK:ER- and 4-OHT-treated cells. Scale bar = 20 μm. ( d ) Images show organotypic killing assays using control or MMP14 over-expressing A431 cells in the presence or absence of 10 μM Y27632. Scale bar = 100 μm. Plot shows the quantification of strand width from three biological replicates – 1 unit is equivalent to 0.52 μm. One-way ANOVA with post-hoc multiple comparisons was performed. Error bars indicate 95% confidence intervals, one dot represents one strand. ( e ) Images show organotypic invasion assays using MMP14 over-expressing A431 cells additionally engineered to contain ROCK:ER in the presence or absence of 4-OHT. Scale bar = 100 μm. Plot shows the quantification of strand width from three biological replicates. Unpaired t-test was performed. Error bars indicate 95% confidence intervals, one dot represents one strand. Figure 6—source data 1. Quantification of invading strand width in A431 cells with/without manipulation of actomyosin contractility.

Article Snippet: Transfected construct ( Homo-sapiens ) , px458 CTNNA1 gRNA , Santa Cruz , sc-419475 , .

Techniques: Control, Expressing

Journal: eLife

Article Title: Interplay of adherens junctions and matrix proteolysis determines the invasive pattern and growth of squamous cell carcinoma

doi: 10.7554/eLife.76520

Figure Lengend Snippet: ( a ) Plots show the quantifications of relative intensity of pMLC in A431 WT, CTNNA1 KO, A431 WT cells treated with Y27632 and ROCK:ER expressing A431 ± 4(O)HT at the edge or cell-cell junction of the cells. Mean, quartiles, and extremes are shown, data from 3 independent experiments. ( b ) Images show the F-actin (magenta) and myosin (MYH9/MHCIIa - green) networks in control A431- and 10-μM Y27632-treated cells. Scale bar = 20 μm. ( c ) Images show the F-actin (magenta) and myosin (MYH9/MHCIIa - green) networks in control A431 ROCK:ER with/without 4-OHT treatment. Scale bar = 20 μm. ( d ) Images show the F-actin (magenta), DNA (DAPI; blue), and MYH9/MHCIIA (green) staining in human squamous cell carcinoma tissue. ‘t’ indicates tumour clusters, arrows point to supra-cellular actomyosin network, scale bar is 50 microns. Figure 6—figure supplement 1—source data 1. Quantification of pMLC intensity in A431 WT, CTNNA1 KO, and cells with actomyosin manipulation.

Article Snippet: Transfected construct ( Homo-sapiens ) , px458 CTNNA1 gRNA , Santa Cruz , sc-419475 , .

Techniques: Expressing, Control, Staining

Journal: eLife

Article Title: Interplay of adherens junctions and matrix proteolysis determines the invasive pattern and growth of squamous cell carcinoma

doi: 10.7554/eLife.76520

Figure Lengend Snippet: ( a ) Heatmaps show how varying the matrix proteolysis (x-axis) and cancer cell–cancer cell adhesion value (y axis) impacts on different metrics when fibroblasts are included in all simulations. WT indicates the ‘wild-type’ value based on experimental parameterisation using A431 cancer cells. Yellow indicates a high value, dark blue a low value. ( b ) Images show the effect of combinatorial modulation of matrix proteolysis and cancer cell-cell adhesion via Crispr KO of CTNNA1 and/or MMP14 and/or MMP14 over-expression in cancer cells (green) in both organotypic assays including fibroblasts (magenta). Scale bar = 100 μm. ( c ) Quantification of three biological replicates of the experiment shown in panel (b) with strand length and strand width shown – 1 unit is equivalent to 0.52 μm. One-way ANOVA with post-hoc multiple comparisons was performed. Error bars indicate 95% confidence interval, one dot represents one strand. ( d ) Images show the effect of combinatorial modulation of matrix proteolysis and cancer cell-cell adhesion via Crispr KO of CTNNA1 and/or MMP14 and/or MMP14 over-expression in cancer cells (green) in both spheroid assays including fibroblasts (magenta). ( e ) Quantification of three biological replicates of the experiment shown in panel (d) with strand length and strand width shown. Scale bar = 100 μm. One-way ANOVA with post-hoc multiple comparisons was performed. Error bars indicate 95% confidence interval, one dot represents one strand. Figure 7—source data 1. Quantification of invading strand width and length in A431 cells with/without manipulation of MMP14 and/or CTNNA1.

Article Snippet: Transfected construct ( Homo-sapiens ) , px458 CTNNA1 gRNA , Santa Cruz , sc-419475 , .

Techniques: CRISPR, Over Expression

Journal: eLife

Article Title: Interplay of adherens junctions and matrix proteolysis determines the invasive pattern and growth of squamous cell carcinoma

doi: 10.7554/eLife.76520

Figure Lengend Snippet: ( a ) Images show EdU-labeled proliferating cells (green) and DNA (blue) in spheroid invasion assay with A431 WT, MMP14 KO, MMP14 OE, or CTNNA1 KO (magenta). ( b ) Plot shows the quantification of EdU-labeled cells shown in (a). One-way ANOVA with post-hoc multiple comparisons was performed. Error bars indicate 95% confidence intervals, n=3 biological replicates. ( c ) Plot shows quantification of growth of A431 cells with the indicated manipulations of MMP14 and CTNNA1 in two-dimensional cell culture. Two-way ANOVA with post-hoc multiple comparisons was performed. Error bars indicate 95% confidence intervals, n=3 biological replicates. ( b ) Phase contrast images show the growth of A431 ROCK:ER cancer cell colonies in the presence or absence of 4-OHT. Scale bar = 50 μm. ( c ) Plot shows quantification of the growth assay shown in (b). Data from three biological replicates. Two-way ANOVA with post-hoc multiple comparisons was performed. Error bars indicate 95% confidence intervals, n=3 biological replicates. Figure 8—figure supplement 1—source data 1. Quantification of proliferation of WT, MMP14, CTNNA1, and/or ROCKER manipulated A431 in 2D and 3D culture.

Article Snippet: Transfected construct ( Homo-sapiens ) , px458 CTNNA1 gRNA , Santa Cruz , sc-419475 , .

Techniques: Labeling, Invasion Assay, Cell Culture, Growth Assay

Journal: eLife

Article Title: Interplay of adherens junctions and matrix proteolysis determines the invasive pattern and growth of squamous cell carcinoma

doi: 10.7554/eLife.76520

Figure Lengend Snippet: ( a ) Heatmaps show how varying the matrix proteolysis (left) or cancer cell–cancer cell adhesion value (right) impacts on predicted cell growth in the presence or absence of fibroblasts. WT indicates the ‘wild-type’ value based on experimental parameterisation using A431 cancer cells. Yellow indicates a high value, dark blue a low value. ( b ) Phase contrast images show the growth of cancer cell colonies with the indicated manipulations of MMP14 and CTNNA1 after 8 days surrounded by matrix. Scale bar = 50 μm. ( c ) Plot shows quantification of the growth assay shown in (b). Two-way ANOVA with post-hoc multiple comparisons was performed. Error bars indicate 95% confidence intervals. Data from three biological replicates. ( d ) Fluorescent image shows reflectance of collagen fibre (cyan) and cell membrane of A431 WT cells in three-dimensional (3D) culture. ( e ) Fluorescent image shows reflectance of collagen fibres around A431 WT cells in 3D culture at two time points. t=0 min: magenta, t=100 min: green. ( f ) Fluorescent images show reflectance of collagen fibres (cyan) and cell membrane of A431 WT, CRNNA1 KO, or MMP14 over expressing cells (red) in 3D culture. White arrows highlight the formation and motion of collagen bundles adjacent to the cell clusters, yellow arrows highlight gaps. Figure 8—source data 1. Quantification of cancer cell proliferation in 3D culture.

Article Snippet: Transfected construct ( Homo-sapiens ) , px458 CTNNA1 gRNA , Santa Cruz , sc-419475 , .

Techniques: Growth Assay, Membrane, Expressing

Journal: eLife

Article Title: Interplay of adherens junctions and matrix proteolysis determines the invasive pattern and growth of squamous cell carcinoma

doi: 10.7554/eLife.76520

Figure Lengend Snippet: ( a ) H&E images are shown on tumours growing in the ears of mice with the indicated manipulations of MMP14 and CTNNA1. Scale bar = 50 μm. ( b ) Plot shows quantification of A431 tumour growth with the indicated manipulations of MMP14 and CTNNA1. ( c ) Table shows quantification of mice with primary tumours and mice with lymph node metastases when injected with A431 cells with the indicated manipulations of MMP14 and CTNNA1. The total number of mice for each condition also applies to the data plotted in (b). Two-way ANOVA with post-hoc multiple comparisons was performed. Error bars indicate 95% confidence intervals. Figure 9—source data 1. Tumour size and number of metastasis in WT and MMP14 and/or CTNNA1 manipulated tumour-bearing mice.

Article Snippet: Transfected construct ( Homo-sapiens ) , px458 CTNNA1 gRNA , Santa Cruz , sc-419475 , .

Techniques: Injection

Journal: eLife

Article Title: Interplay of adherens junctions and matrix proteolysis determines the invasive pattern and growth of squamous cell carcinoma

doi: 10.7554/eLife.76520

Figure Lengend Snippet:

Article Snippet: Transfected construct ( Homo-sapiens ) , px458 CTNNA1 gRNA , Santa Cruz , sc-419475 , .

Techniques: Transfection, Construct, Sequencing, Control, Generated, Membrane, Imaging

Journal: eLife

Article Title: DBT is a metabolic switch for maintenance of proteostasis under proteasomal impairment

doi: 10.7554/eLife.91002

Figure Lengend Snippet: ( A ) Workflow of the CRISPR screen in retinal pigment epithelium (RPE1) cells, which were transduced with a lentiviral Genome-Scale CRISPR Knock-out (GeCKO) single guide RNA (sgRNA) library and selected for the sgRNA expression and then survival after treatments with the proteasome inhibitor MG132. Individual surviving cell colonies were collected for sequencing and subsequent analysis. ( B ) Left: The cytotoxicity analysis of wild-type (WT) and DBT knockout (KO) RPE1 cells treated with MG132 at different doses for 96 hr (n=3). Right: The time course analysis of MG132-induced cytotoxicity in the WT and DBT KO cells (n=3). ( C ) Immunoblot analysis of WT RPE1, DBT KO, and DBT’ cells. The DBT’ cells expressed an engineered DBT cDNA that resisted DBT-targeted Cas9 cleavage and rescued the DBT expression in the KO cells. ( D ) Cell viability was measured by Calcein-AM staining in WT RPE1, DBT KO, and DBT’ cells treated with MG132 (2 μM, 96 hr). Scale bar, 100 μm. ( E ) Quantification of the cell viability measured by Calcein-AM staining in ( D ) (n=9). ( F ) Left: Immunoblot analysis of RPE1 cells transfected with DBT shRNAs and non-targeting control shRNAs. Right: Quantification of the cell viability under treatment with MG132 (2 μM, 48 hr), as measured by Calcein-AM staining (n=4). ( G ) Immunoblotting and quantification of cleaved PARP as an MG132-induced cell death marker (n=4). ( H ) Immunoblotting and quantification of cleaved Caspase 3 as an MG132-induced cell death marker (n=3). Error bars represent means ± SEM. *p≤0.05; **p≤0.01; ****p≤0.0001. Figure 1—source data 1. Original and uncropped blots for . Figure 1—source data 2. Original and uncropped blots for . Figure 1—source data 3. Original and uncropped blots for . Figure 1—source data 4. Original and uncropped blots for .

Article Snippet: The specific gRNA sequences were selected by using the CRISPR design tool from Benchling, Inc The gRNAs were cloned into the gRNA/Cas9-expressing vector pLenti-CRISPR v2, conferring resistance to puromycin (Addgene 52961).

Techniques: CRISPR, Transduction, Knock-Out, Expressing, Sequencing, Western Blot, Staining, Transfection, Control, Marker

Journal: Frontiers in Immunology

Article Title: Toxoplasma Chinese 1 Strain of WH3Δ rop16 I/III / gra15 II Genetic Background Contributes to Abnormal Pregnant Outcomes in Murine Model

doi: 10.3389/fimmu.2018.01222

Figure Lengend Snippet: Primers used in this study.

Article Snippet: UPRT-targeting guide RNA (gRNA) in pSAG1:CAS9-U6:sgUPRT (Addgene plasmid #54467) was replaced with ROP16 I/III targeting gRNA using Q5 mutagenesis kit.

Techniques: Sequencing, Mutagenesis

Journal: Scientific Reports

Article Title: Efficient generation of transgenic cattle using the DNA transposon and their analysis by next-generation sequencing

doi: 10.1038/srep27185

Figure Lengend Snippet: ( a ) After 45 days of embryo transfer, pregnancy was confirmed by ultrasonography. ( b ) The calf was delivered without assistant. ( c ) When ultraviolet light was exposed to nose of tg cattle, GFP expression was strongly observed. And the tg cattle grew up to 12 months old without any healthy issue ( d ). To determine GFP or RFP expression in a piece of tissue or primary skin cells via recombination, the tissue and cells were cultured and transfected with Dre recombinase mRNA by nucleofection (( e ) a piece of tissue from tg cattle-brightness, ( e` ) before Dre recombinase transfection (GFP), ( e`` ) after Dre recombinase transfection (RFP)). The primary skin cells from the tg cattle were isolated, cultured and transfected with Dre recombinase mRNA. Before transfection, only GFP expression was observed, RFP expression were observed via GFP gene excision by recombination (( f – f`` ) before transfection brightness, fluorescence, and merged, respectively; ( g – g`` ) after transfection brightness, fluorescence, and merged, respectively). The transgene integration and recombination were confirmed by genomic DNA PCR (( h ) 1: Molecular maker, 2: Wild type cattle, 3: Blood from tg cattle, 4: Positive control (DNAs), 5: Negative control) and RT-PCR (( i ) 1: Wild type cattle, 2: cDNA from tg cattle, 3: Negative control). After Dre recombinase transfection, GFP excision was confirmed by genomic DNA PCR (( j ) 1: Molecular marker, 2: Before transfection, 3: After transfection, 4: Negative control). Gel image was cropped and original image was seen in .

Article Snippet: As briefly, primary cells from a transgenic cattle (SNU-PB-2) were transfected with plasmid DNAs (Cas9 with CMV promoter, single guide RNA for GFP with U6 promoter (Toolgen, Seoul, Republic of Korea), donor DNAs for Knock-In; ) using Nucleofactor technology (Neon ® , Invitrogen; program #16).

Techniques: Expressing, Cell Culture, Transfection, Isolation, Fluorescence, Positive Control, Negative Control, Reverse Transcription Polymerase Chain Reaction, Marker

Journal: Scientific Reports

Article Title: Efficient generation of transgenic cattle using the DNA transposon and their analysis by next-generation sequencing

doi: 10.1038/srep27185

Figure Lengend Snippet: ( a ) After 45 days of embryo transfer, pregnancy was confirmed by ultrasonography. ( b ) The calf was delivered without any assistance and grew up to 2 months. Analyzing the calf without ultraviolet light, GFP expression was observed in the eyes ( c ) and nose ( d ). The tg cattle have been grown to 5 months old without any health issue ( e ). When ultraviolet light was exposed to the head, GFP expression was strongly observed ( f ). To know GFP in skin cells, the primary skin cells from the tg cattle were isolated and cultured. In over 99% of cells, GFP expression were observed (( g ) brightness; ( g` ) fluorescence). The transgene integration was confirmed by genomic DNA PCR (( h ) 1: Molecular maker, 2: Wild type cattle, 3: Blood from tg cattle, 4: Positive control (DNAs), 5: Negative control) and RT-PCR using primary cells (( i ) 1: cDNA from Wild type cattle, 2: cDNA from tg cattle, 3: Negative control). Gel image was cropped and original image was seen in .

Article Snippet: As briefly, primary cells from a transgenic cattle (SNU-PB-2) were transfected with plasmid DNAs (Cas9 with CMV promoter, single guide RNA for GFP with U6 promoter (Toolgen, Seoul, Republic of Korea), donor DNAs for Knock-In; ) using Nucleofactor technology (Neon ® , Invitrogen; program #16).

Techniques: Expressing, Isolation, Cell Culture, Fluorescence, Positive Control, Negative Control, Reverse Transcription Polymerase Chain Reaction