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tf1 cell proliferation assay  (Genzyme)

 
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    Genzyme tf1 cell proliferation assay
    Tf1 Cell Proliferation Assay, supplied by Genzyme, used in various techniques. Bioz Stars score: 90/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
    https://www.bioz.com/product/tf1+cell+proliferation+assay/tf1+cell+proliferation+assay/us07368111-1004-36-40
    Average 90 stars, based on 1 article reviews
    tf1 cell proliferation assay - by Bioz Stars, 2026-10
    90/100 stars

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    Proliferation Assay:

    Article Title: Human antibodies specific for TGFβ2
    Article Snippet: .. ~100 Anti-TGF-β2 antibody 6A5 scFv 1.5 6A5 IgG ~6 6B1 scFv 0.3 6B1 IgG 0.6 6H1 scFv 0.22 6H1 IgG ~10 11E6 IgG 1.6 14F12 scFv 3 VT37 scFv 2 TABLE 6 Potency of neutralisation of TGFbeta isoforms 6B1 IgG4 Genzyme TF1 cell proliferation assay IC50 (nM IgG) TGFbeta1 >100 1.5 TGFbeta2 2 10 TGFbeta3 11 0.1 A549 cell radioreceptor assay IC50 (nM IgG) TGFbeta1 >400 0.55 TGFbeta2 0.05 0.5 TGFbeta3 4 0.03 TABLE 7 Kinetic parameters of 6B1 IgG4 and 6B1 single chain Fv dissociation antibody format antigen koff s−1 kon M−1s−1 constant Kd nM 6B1 scFv TGFβ2 6.68 × 10−4 2.87 × 105 2.32 6B1 IgG4 TGFβ2 3.36 × 10−4 3.84 × 105 0.89 6B1 IgG4 TGFβ3 4.5 × 10−4 4.5 × 104 10.0 TABLE 8 Peptide sequences from phage binding to 6B1 IgG4 This table shows the amino acid sequence of 4 phage peptide display clones that show a match with the sequence of TGFbeta2. ..

    Binding Assay:

    Article Title: Human antibodies specific for TGFβ2
    Article Snippet: .. ~100 Anti-TGF-β2 antibody 6A5 scFv 1.5 6A5 IgG ~6 6B1 scFv 0.3 6B1 IgG 0.6 6H1 scFv 0.22 6H1 IgG ~10 11E6 IgG 1.6 14F12 scFv 3 VT37 scFv 2 TABLE 6 Potency of neutralisation of TGFbeta isoforms 6B1 IgG4 Genzyme TF1 cell proliferation assay IC50 (nM IgG) TGFbeta1 >100 1.5 TGFbeta2 2 10 TGFbeta3 11 0.1 A549 cell radioreceptor assay IC50 (nM IgG) TGFbeta1 >400 0.55 TGFbeta2 0.05 0.5 TGFbeta3 4 0.03 TABLE 7 Kinetic parameters of 6B1 IgG4 and 6B1 single chain Fv dissociation antibody format antigen koff s−1 kon M−1s−1 constant Kd nM 6B1 scFv TGFβ2 6.68 × 10−4 2.87 × 105 2.32 6B1 IgG4 TGFβ2 3.36 × 10−4 3.84 × 105 0.89 6B1 IgG4 TGFβ3 4.5 × 10−4 4.5 × 104 10.0 TABLE 8 Peptide sequences from phage binding to 6B1 IgG4 This table shows the amino acid sequence of 4 phage peptide display clones that show a match with the sequence of TGFbeta2. ..

    Sequencing:

    Article Title: Human antibodies specific for TGFβ2
    Article Snippet: .. ~100 Anti-TGF-β2 antibody 6A5 scFv 1.5 6A5 IgG ~6 6B1 scFv 0.3 6B1 IgG 0.6 6H1 scFv 0.22 6H1 IgG ~10 11E6 IgG 1.6 14F12 scFv 3 VT37 scFv 2 TABLE 6 Potency of neutralisation of TGFbeta isoforms 6B1 IgG4 Genzyme TF1 cell proliferation assay IC50 (nM IgG) TGFbeta1 >100 1.5 TGFbeta2 2 10 TGFbeta3 11 0.1 A549 cell radioreceptor assay IC50 (nM IgG) TGFbeta1 >400 0.55 TGFbeta2 0.05 0.5 TGFbeta3 4 0.03 TABLE 7 Kinetic parameters of 6B1 IgG4 and 6B1 single chain Fv dissociation antibody format antigen koff s−1 kon M−1s−1 constant Kd nM 6B1 scFv TGFβ2 6.68 × 10−4 2.87 × 105 2.32 6B1 IgG4 TGFβ2 3.36 × 10−4 3.84 × 105 0.89 6B1 IgG4 TGFβ3 4.5 × 10−4 4.5 × 104 10.0 TABLE 8 Peptide sequences from phage binding to 6B1 IgG4 This table shows the amino acid sequence of 4 phage peptide display clones that show a match with the sequence of TGFbeta2. ..

    Clone Assay:

    Article Title: Human antibodies specific for TGFβ2
    Article Snippet: .. ~100 Anti-TGF-β2 antibody 6A5 scFv 1.5 6A5 IgG ~6 6B1 scFv 0.3 6B1 IgG 0.6 6H1 scFv 0.22 6H1 IgG ~10 11E6 IgG 1.6 14F12 scFv 3 VT37 scFv 2 TABLE 6 Potency of neutralisation of TGFbeta isoforms 6B1 IgG4 Genzyme TF1 cell proliferation assay IC50 (nM IgG) TGFbeta1 >100 1.5 TGFbeta2 2 10 TGFbeta3 11 0.1 A549 cell radioreceptor assay IC50 (nM IgG) TGFbeta1 >400 0.55 TGFbeta2 0.05 0.5 TGFbeta3 4 0.03 TABLE 7 Kinetic parameters of 6B1 IgG4 and 6B1 single chain Fv dissociation antibody format antigen koff s−1 kon M−1s−1 constant Kd nM 6B1 scFv TGFβ2 6.68 × 10−4 2.87 × 105 2.32 6B1 IgG4 TGFβ2 3.36 × 10−4 3.84 × 105 0.89 6B1 IgG4 TGFβ3 4.5 × 10−4 4.5 × 104 10.0 TABLE 8 Peptide sequences from phage binding to 6B1 IgG4 This table shows the amino acid sequence of 4 phage peptide display clones that show a match with the sequence of TGFbeta2. ..



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    (a) SDS-PAGE of 293S, 293SGnTI-/- and 293SGlycoDelete GM-CSF samples. Each sample was treated with PNGaseF, sialidase or both enzymes, analysed on an SDS-PAGE gel and stained with coomassie brilliant blue. The non-cropped can be found in Supplementary Fig. 15. (b) MALDI-TOF-MS spectra of GM-CSF samples. Peaks are labeled with their m/z values. The spectrum of the 293SGnTI-/- GM-CSF reveals the presence of Man5GlcNAc2 and fucosylated Man5GlcNAc2 on the glycopeptide containing N37 (top spectrum; left and right glycans, respectively). These glycoforms are absent in GlycoDelete GM-CSF (2nd spectrum). New peaks at m/z values corresponding to HexNAc, Hex-HexNAc and Sia-Hex-HexNAc modified glycopeptides are detected. Spectra of exoglycosidase-digested GlycoDelete GM-CSF N-glycans with α-2,3-sialidase or both a broad spectrum sialidase and β-1,4-galactosidase are shown. These spectra show that N-glycans on GlycoDelete GM-CSF N37 are Neu5Ac-α-2,3-Gal-β-1,4-GlcNAc and Gal-β-1,4-GlcNAc. (c) Thermofluor assay of 293S, 293SGlycoDelete and E. coli produced GM-CSF. We observed similar average (n=3) melting curves for all GM-CSF glycoforms (Tm is approximately 60°C). (d) Bioactivity of 293S and 293SGlycoDelete produced GM-CSF as measured in a <t>TF1</t> erythroleukemia cell <t>proliferation</t> assay (n=3). E. coli produced GM-CSF serves as a non-glycosylated control sample. The error bars are S.D. Numerical data for this graph are in Supplementary Table 3. (e) ELISA analysis of anti-glycan antibody titers in GlycoDelete GM-CSF immunized rabbit serum. Removal of sialic acid and galactose monosaccharides from the GlycoDelete glycan does not reduce serum antibody recognition. Numerical data for this graph are in Supplementary Table 4.
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    (a) SDS-PAGE of 293S, 293SGnTI-/- and 293SGlycoDelete GM-CSF samples. Each sample was treated with PNGaseF, sialidase or both enzymes, analysed on an SDS-PAGE gel and stained with coomassie brilliant blue. The non-cropped can be found in Supplementary Fig. 15. (b) MALDI-TOF-MS spectra of GM-CSF samples. Peaks are labeled with their m/z values. The spectrum of the 293SGnTI-/- GM-CSF reveals the presence of Man5GlcNAc2 and fucosylated Man5GlcNAc2 on the glycopeptide containing N37 (top spectrum; left and right glycans, respectively). These glycoforms are absent in GlycoDelete GM-CSF (2nd spectrum). New peaks at m/z values corresponding to HexNAc, Hex-HexNAc and Sia-Hex-HexNAc modified glycopeptides are detected. Spectra of exoglycosidase-digested GlycoDelete GM-CSF N-glycans with α-2,3-sialidase or both a broad spectrum sialidase and β-1,4-galactosidase are shown. These spectra show that N-glycans on GlycoDelete GM-CSF N37 are Neu5Ac-α-2,3-Gal-β-1,4-GlcNAc and Gal-β-1,4-GlcNAc. (c) Thermofluor assay of 293S, 293SGlycoDelete and E. coli produced GM-CSF. We observed similar average (n=3) melting curves for all GM-CSF glycoforms (Tm is approximately 60°C). (d) Bioactivity of 293S and 293SGlycoDelete produced GM-CSF as measured in a <t>TF1</t> erythroleukemia cell <t>proliferation</t> assay (n=3). E. coli produced GM-CSF serves as a non-glycosylated control sample. The error bars are S.D. Numerical data for this graph are in Supplementary Table 3. (e) ELISA analysis of anti-glycan antibody titers in GlycoDelete GM-CSF immunized rabbit serum. Removal of sialic acid and galactose monosaccharides from the GlycoDelete glycan does not reduce serum antibody recognition. Numerical data for this graph are in Supplementary Table 4.
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    (a) SDS-PAGE of 293S, 293SGnTI-/- and 293SGlycoDelete GM-CSF samples. Each sample was treated with PNGaseF, sialidase or both enzymes, analysed on an SDS-PAGE gel and stained with coomassie brilliant blue. The non-cropped can be found in Supplementary Fig. 15. (b) MALDI-TOF-MS spectra of GM-CSF samples. Peaks are labeled with their m/z values. The spectrum of the 293SGnTI-/- GM-CSF reveals the presence of Man5GlcNAc2 and fucosylated Man5GlcNAc2 on the glycopeptide containing N37 (top spectrum; left and right glycans, respectively). These glycoforms are absent in GlycoDelete GM-CSF (2nd spectrum). New peaks at m/z values corresponding to HexNAc, Hex-HexNAc and Sia-Hex-HexNAc modified glycopeptides are detected. Spectra of exoglycosidase-digested GlycoDelete GM-CSF N-glycans with α-2,3-sialidase or both a broad spectrum sialidase and β-1,4-galactosidase are shown. These spectra show that N-glycans on GlycoDelete GM-CSF N37 are Neu5Ac-α-2,3-Gal-β-1,4-GlcNAc and Gal-β-1,4-GlcNAc. (c) Thermofluor assay of 293S, 293SGlycoDelete and E. coli produced GM-CSF. We observed similar average (n=3) melting curves for all GM-CSF glycoforms (Tm is approximately 60°C). (d) Bioactivity of 293S and 293SGlycoDelete produced GM-CSF as measured in a TF1 erythroleukemia cell proliferation assay (n=3). E. coli produced GM-CSF serves as a non-glycosylated control sample. The error bars are S.D. Numerical data for this graph are in Supplementary Table 3. (e) ELISA analysis of anti-glycan antibody titers in GlycoDelete GM-CSF immunized rabbit serum. Removal of sialic acid and galactose monosaccharides from the GlycoDelete glycan does not reduce serum antibody recognition. Numerical data for this graph are in Supplementary Table 4.

    Journal: Nature biotechnology

    Article Title: GlycoDelete technology: simplifying mammalian cell N-glycosylation for recombinant protein expression

    doi: 10.1038/nbt.2885

    Figure Lengend Snippet: (a) SDS-PAGE of 293S, 293SGnTI-/- and 293SGlycoDelete GM-CSF samples. Each sample was treated with PNGaseF, sialidase or both enzymes, analysed on an SDS-PAGE gel and stained with coomassie brilliant blue. The non-cropped can be found in Supplementary Fig. 15. (b) MALDI-TOF-MS spectra of GM-CSF samples. Peaks are labeled with their m/z values. The spectrum of the 293SGnTI-/- GM-CSF reveals the presence of Man5GlcNAc2 and fucosylated Man5GlcNAc2 on the glycopeptide containing N37 (top spectrum; left and right glycans, respectively). These glycoforms are absent in GlycoDelete GM-CSF (2nd spectrum). New peaks at m/z values corresponding to HexNAc, Hex-HexNAc and Sia-Hex-HexNAc modified glycopeptides are detected. Spectra of exoglycosidase-digested GlycoDelete GM-CSF N-glycans with α-2,3-sialidase or both a broad spectrum sialidase and β-1,4-galactosidase are shown. These spectra show that N-glycans on GlycoDelete GM-CSF N37 are Neu5Ac-α-2,3-Gal-β-1,4-GlcNAc and Gal-β-1,4-GlcNAc. (c) Thermofluor assay of 293S, 293SGlycoDelete and E. coli produced GM-CSF. We observed similar average (n=3) melting curves for all GM-CSF glycoforms (Tm is approximately 60°C). (d) Bioactivity of 293S and 293SGlycoDelete produced GM-CSF as measured in a TF1 erythroleukemia cell proliferation assay (n=3). E. coli produced GM-CSF serves as a non-glycosylated control sample. The error bars are S.D. Numerical data for this graph are in Supplementary Table 3. (e) ELISA analysis of anti-glycan antibody titers in GlycoDelete GM-CSF immunized rabbit serum. Removal of sialic acid and galactose monosaccharides from the GlycoDelete glycan does not reduce serum antibody recognition. Numerical data for this graph are in Supplementary Table 4.

    Article Snippet: GM-CSF bioactivity experiments, TF-1 proliferation assay TF1 cells (ATCC n° CRL-2003) were maintained in RPMI 1640, 10% (v/v) fetal bovine serum, 2 mM of L-Gln and 2 ng/mL of recombinant human GM-CSF at 37°C, 5% CO2.

    Techniques: SDS Page, Staining, Labeling, Glycoproteomics, Modification, Produced, Proliferation Assay, Control, Enzyme-linked Immunosorbent Assay