rabbit polyclonal anti-β1-integrin antibody gtx112971 (GeneTex)
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Rabbit Polyclonal Anti β1 Integrin Antibody Gtx112971, supplied by GeneTex, 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 "Identification of the Interacting Domains Between Tissue Factor and β1-Integrin and the Signalling Properties of the Two Fibronectin-like Domains of Tissue Factor"
Article Title: Identification of the Interacting Domains Between Tissue Factor and β1-Integrin and the Signalling Properties of the Two Fibronectin-like Domains of Tissue Factor
Journal: Cancers
doi: 10.3390/cancers17040644
Figure Legend Snippet: Structure of TF and β1-integrin protein constructs. ( A ) Depictions of the sections of the TF protein present in the TED (residues 1–219), LED (residues 106–219) and UED (residues 1–110) protein constructs, produced using the crystal structure of the extracellular domain of TF (1TFH). ( B ) β3-integrin (4G1E) was used as a proxy for β1-integrin, as the crystal structure of β1-integrin has not been published. In β3-integrin, the EGF4 spans residues 563–603 and the βTD residues 604–695. The corresponding domains within β1-integrin were estimated by homology comparison, with the EGF4 domain estimated to span residues 572–610, and βTD was localised to residues 611–728.
Techniques Used: Construct, Produced, Comparison
Figure Legend Snippet: Association of TF extracellular domain peptide constructs with cellular β1-integrin in HDBEC. HDBEC (5 × 10 4 ) were transfected to express TED, LED or UED constructs or control peptides. The interactions between the expressed peptides and β1-integrin were assessed by PLA using mouse anti-HA-tag (C29F4) and rabbit anti-β1-integrin antibodies. Positive controls were prepared using mouse anti-TF (HTF1) and rabbit anti-TF (FL295) antibodies, as well as mouse anti-TF (HTF1) and rabbit anti-β1-integrin antibodies. A negative control was prepared using the mouse anti-HA-tag antibody (C29F4) paired with a rabbit IgG isotype control antibody. ( A ) The cells were examined by fluorescence microscopy at ×40 magnification. ( B ) The number of red fluorescent interaction events and blue cell nuclei in each field of view was quantified using ImageJ.
Techniques Used: Construct, Transfection, Control, Negative Control, Fluorescence, Microscopy
Figure Legend Snippet: Association of TF-derived peptides with cellular β1-integrin in MDA-MB-231 cells. MDA-MB-231 cells (10 4 ) were transfected to express the TED, LED or UED constructs or control peptide. The interactions between the expressed constructs and β1-integrin were assessed by PLA using mouse anti-HA-tag (C29F4) and polyclonal rabbit anti-β1-integrin antibodies. ( A ) The cells were examined by fluorescence microscopy at ×40 magnification. ( B ) The number of red fluorescent interaction events and blue cell nuclei in each field of view was quantified using ImageJ. MDA-MB-231 cells (1.5 × 10 5 ) were transfected to express TED, LED or UED constructs or control peptide for 48 h and were then lysed. The recombinant protein constructs were immunoprecipitated from the lysates using the anti-FLAG-tag (4 µg; C29F4) antibody and protein A-magnetic beads. A sample of lysate was also incubated with the protein A-beads. ( C ) Western blot analysis of samples co-precipitated along with the TED, LED or UED constructs was carried out using a polyclonal anti-β1-integrin antibody. Images represent 3 separate experiments. ( D ) The amounts of β1-integrin precipitated from the samples were measured using ImageJ.
Techniques Used: Derivative Assay, Transfection, Construct, Control, Fluorescence, Microscopy, Recombinant, Immunoprecipitation, FLAG-tag, Magnetic Beads, Incubation, Western Blot
Figure Legend Snippet: Association of EGF4-βTD peptide construct with cellular TF. MDA-MB-231 cells (10 4 ) were transfected to express the EGF4-βTD or EGF4 constructs or control peptide. The interactions between the expressed constructs and TF were assessed by PLA using mouse anti-HA-tag (C29F4) and polyclonal rabbit anti-TF antibodies. ( A ) The cells were examined by fluorescence microscopy at ×40 magnification. ( B ) The number of red fluorescent interaction events and blue cell nuclei in each field of view was quantified using ImageJ. MDA-MB-231 cells (1.5 × 10 5 ) were transfected to express the EGF4-βTD construct or control peptide for 48 h and were then lysed. The recombinant protein constructs were immunoprecipitated from the lysates using the anti-FLAG-tag (4 µg; C29F4) antibody and protein A-magnetic beads. A sample of lysate was also incubated with the protein A-beads. ( C ) Western blot analysis of samples precipitated along with the EGF4-βTD construct was carried out using an anti-TF antibody (HTF-1). Images represent 3 separate experiments. ( D ) The amounts of TF precipitated from the samples were measured using ImageJ.
Techniques Used: Construct, Transfection, Control, Fluorescence, Microscopy, Recombinant, Immunoprecipitation, FLAG-tag, Magnetic Beads, Incubation, Western Blot
Figure Legend Snippet: Analysis of the availability of the EGF4-βTD domain following expression of TF peptides. ( A ) MDA-MB-231 cells (10 4 ) and ( B ) HDBEC (5 × 10 4 ) were transfected to express TED, LED, UED or control peptides. The cells were probed with an antibody against residues 579–799 of β1-integrin (EGF4 and βTD domains). The cells were then probed with HRP-conjugated anti-rabbit IgG antibody and developed using TMB-one solution HRP substrate. The amount of bound antibody was quantified by measuring the absorptions at 450 nm using a plate reader. Values were normalised to the number of cells in each well, as determined by crystal violet assay measurements.
Techniques Used: Expressing, Transfection, Control, Crystal Violet Assay
Figure Legend Snippet: The influence of TF extracellular domain peptide constructs on the conformation of cellular β1-integrin. ( A , B ) MDA-MB-231 cells (10 4 ) and ( C , D ) HDBEC (5 × 10 4 ) were transfected to express TED, LED, UED or control peptides. The cells were probed with antibodies that specifically recognised the ( A , C ) active/open (9EG7) or ( B , D ) inactive/closed (AIIB2) conformation of β1-integrin. The cells were then probed with HRP-conjugated anti-rat IgG or anti-rabbit IgG antibodies and developed using TMB-one solution HRP substrate. The amount of bound antibody was quantified by measuring the absorptions at 450 nm using a plate reader. Values were normalised to the number of cells in each well, as determined by crystal violet assay measurements.
Techniques Used: Construct, Transfection, Control, Crystal Violet Assay
Figure Legend Snippet: Comparison of the influence of protein constructs in TF + MDA-MB-231 and TF − HDBEC.
Techniques Used: Comparison, Construct, Phospho-proteomics, Expressing
Figure Legend Snippet: The influence of an inhibitory anti-β1-integrin antibody on the changes in proliferative signalling caused by TF extracellular domain peptide constructs. MDA-MB-231 cells (1.5 × 10 5 ) were transfected to express UED or the control peptide. The cells were pre-incubated with an inhibitory anti-β1-integrin antibody (AIIB2; 10 μg/mL) for 16 h prior to collection. ( A ) Cells were lysed with Laemmli buffer and western blot analysis was carried out using antibodies against total ERK1/2, phosphorylated ERK1/2 and GAPDH. Images represent 4 separate experiments. ( B ) Band intensities were quantified using ImageJ and the ratio of pERK/tERK was calculated. ( C ) Cells were lysed, and the mRNA extracted and converted to cDNA using cell-2-cDNA kit. The expression of cyclin D1 and β-actin mRNA were measured using RT-PCR and the relative cyclin D1 expression levels calculated using the 2 −ΔΔCq method.
Techniques Used: Construct, Transfection, Control, Incubation, Western Blot, Expressing, Reverse Transcription Polymerase Chain Reaction
Figure Legend Snippet: Proposed model for the interaction between TF and β1-integrin. ( A ) The proposed positioning for the interacting domains during complex formation between TF (green) and β1-integrin (purple). In the model, the upper region of TF extracellular domain interacts with the EGF4 domain of β1-integrin, and the lower region with the βTD domain. ( B ) The structural loop (blue) within the βTD (cyan) of a β3-integrin interacts with residues in the head group of the integrin and may hold the integrin in a closed configuration.
Techniques Used:
