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Human TFG-β1 ELISA Set

Human TFG-β1 ELISA Set

(RUO)
Human TFG-β1 ELISA Set
This standard curve is fordemonstration only. A standard curve must be run with each assay. “Typical Standard Curve\" and 20-plate yield were obtained in the BD Biosciences Pharmingen laboratory, using the recommended procedure and manual plate washing.
Human TFG-β1 ELISA Set

This standard curve is fordemonstration only. A standard curve must be run with each assay. \"Typical Standard Curve\" and 20-plate yield were obtained in the BD Biosciences Pharmingen laboratory, using the recommended procedure and manual plate washing.

Human TFG-β1 ELISA Set
Serial dilutions within the plate may also be performed by pipetting 100 µL of Assay Diluent into each standard well except the highest (8000 pg/mL), then adding 100 µL of the 8000 pg/mL standard to both that well and the 4000 pg/mL well, mixing the well contents by rinsing the pipette tip, and adding 100 µL of the 4000 pg/mL standard to the 2000 pg/mL well. Continue these dilutions to the 125 pg/mL standard well, out of which the extra 100 µL should be discarded .
Human TFG-β1 ELISA Set

Serial dilutions within the plate may also be performed by pipetting 100 µL of Assay Diluent into each standard well except the highest (8000 pg/mL), then adding 100 µL of the 8000 pg/mL standard to both that well and the 4000 pg/mL well, mixing the well contents by rinsing the pipette tip, and adding 100 µL of the 4000 pg/mL standard to the 2000 pg/mL well. Continue these dilutions to the 125 pg/mL standard well, out of which the extra 100 µL should be discarded.

This standard curve is fordemonstration only. A standard curve must be run with each assay. “Typical Standard Curve\" and 20-plate yield were obtained in the BD Biosciences Pharmingen laboratory, using the recommended procedure and manual plate washing.

This standard curve is fordemonstration only. A standard curve must be run with each assay. \"Typical Standard Curve\" and 20-plate yield were obtained in the BD Biosciences Pharmingen laboratory, using the recommended procedure and manual plate washing.

Serial dilutions within the plate may also be performed by pipetting 100 µL of Assay Diluent into each standard well except the highest (8000 pg/mL), then adding 100 µL of the 8000 pg/mL standard to both that well and the 4000 pg/mL well, mixing the well contents by rinsing the pipette tip, and adding 100 µL of the 4000 pg/mL standard to the 2000 pg/mL well. Continue these dilutions to the 125 pg/mL standard well, out of which the extra 100 µL should be discarded .

Serial dilutions within the plate may also be performed by pipetting 100 µL of Assay Diluent into each standard well except the highest (8000 pg/mL), then adding 100 µL of the 8000 pg/mL standard to both that well and the 4000 pg/mL well, mixing the well contents by rinsing the pipette tip, and adding 100 µL of the 4000 pg/mL standard to the 2000 pg/mL well. Continue these dilutions to the 125 pg/mL standard well, out of which the extra 100 µL should be discarded.

Product Details
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BD OptEIA™
Human (QC Testing)
ELISA (Routinely Tested)
RUO
AB_2869257


Description

    The OptEIA™ Set for human transforming growth factor beta1 (TGF-β1) contains the components necessary to develop enzymelinked immunosorbent assays (ELISA) for natural or recombinant human TGF-β1 in serum, plasma, and cell culture supernatants. Sufficient materials are provided to yield approximately 20 plates of 96-wells if the recommended storage, materials, buffer preparation, and assay procedure are followed as specified in this package.  

  

  

  

    Assay Optimization  

  

    BD OptEIA™ Sets allow flexible assay design to fit individual laboratory needs. To design an immunoassay with different sensitivity and dynamic range, the following parameters can be varied: Capture, Detection Antibody titers, Incubation time, Incubation temperature, Assay Diluent formulation, Buffer pH, ionic strength, protein concentration, Type of substrate, Washing technique (i.e., number of wash repetitions and soak times).  

  

  

  

    Standardization: This immunoassay is calibrated against purified recombinant human TGF-β1.  

Preparation And Storage

Store unopened reagents at 2-8°C. do not use reagents after expiration date, or if turbidity is evident. Before use, bring all reagents to room temperature (18-25°C). Immediately after use, return to proper storage conditions. Lyophilized standards are stable until expiration date. After reconstitution, immediately aliquot standard stock in polypropylene vials at 50 µl per vial anf freeze at -80°C for up to 6 months. If necessary, store at 2-8°C for up to 8 hours prior to aliquotting/freezing. Do not leave reconstituted standard at room temperature.

Recommended Assay Procedures

    Recommended buffers, solutions  

  

    Note: Do not use sodium azide in these preparations. Sodium azide inactivates the horseradish peroxidase enzyme.  

  

    The BD OptEIA™ Reagent Set B (Cat. No 550534) containing Coating Buffer, Assay Diluent, Substrate Reagents A and B, Stop Solution and 20X Wash Buffer Concentrate is recommended.  

  

    1. Coating Buffer - 0.1 M Sodium Carbonate, pH 9.5; 7.13 g NaHCO3, 1.59 g Na2CO3; q.s. to 1.0 L; pH to 9.5 with 10 N NaOH. Freshly prepare or use within 7 days of preparation, stored at 2-8°C.  

  

    2. Assay Diluent- PBS* with 10% FBS#, pH 7.0. The BD Pharmingen™ Assay Diluent (Cat. No. 555213) is recommended.   

  

    *Phosphate-Buffered Saline: 80.0 g NaCl, 11.6 g Na2HPO4, 2.0 g KH2PO4, 2.0 g KCL, q.s. to 10 L; pH to 7.0.   

  

    #Fetal Bovine Serum: Hyclone Cat. No. SH30088 (heatinactivated) recommended.   

  

    Freshly prepare or use within 3 days of preparation, with 2-8°C  storage.  

  

    3. Wash Buffer - PBS* with 0.05% Tween-20. Freshly prepare or use within 3 days of preparation, stored at 2-8°C.  

  

    4. Substrate Solution - Tetramethylbenzidine (TMB) and Hydrogen Peroxide. The BD Pharmingen™ TMB Substrate Reagent Set (Cat. No. 555214) is recommended.  

  

    5. Stop Solution - 1 M H3PO4 or 2 N H2SO4  

  

  

  

    Additional Materials Required  

  

    1. 96-well BD Falcon™ ELISA plates (Cat. No. 353279) are recommended  

  

    2. Microplate reader capable of measuring absorbance at 450 nm  

  

    3. Precision pipettes  

  

    4. Graduated cylinder, one liter  

  

    5. Deionized or distilled water  

  

    6. Wash bottle or automated washer  

  

    7. Log-log graph paper or automated data reduction  

  

    8. Tubes to prepare standard dilutions  

  

    9. Laboratory timer  

  

    10. Plate sealers or parafilm  

  

  

  

    Specimen Collection and Handling: Specimens should be clear, non-hemolyzed and non-lipemic.  

  

    Cell culture supernatants: Remove any particulate material by centrifugation and assay immediately or store samples at ≤ -20°C. Avoid repeated freeze-thaw cycles.  

  

    Serum: Use a serum separator tube and allow samples to clot for 30 minutes, then centrifuge for 10 minutes at 1000 x g. Remove serum and assay immediately or store samples at ≤ -20° C. Avoid repeated freeze-thaw cycles.  

  

    Plasma: Collect plasma using citrate, EDTA, or heparin as anticoagulant. Centrifuge for 10 minutes at 1000 x g within 30 minutes of collection. Assay immediately or store samples at ≤ -20° C. Avoid repeated freeze-thaw cycles.  

  

  

  

    Sample Activation Procedure  

  

    Serum/Plasma: Dilute 1:5 with PBS (20 µl specimen + 80 µl PBS), then add 1N HCl at 1:25 (4 µl to the above), incubate 60 minutes at 4 °C. Neutralize with 1N NaOH at 1:25 (4 µl to the above), test immediately or store at -80 °C  until testing. Note: Multiply the concentration read from the standard curve by the dilution factor 5.  

  

    Cell Culture Supernatant: Add 1N HCl at 1:25 (100 µl supernatant + 4 µl of 1N HCl), incubate 60 minutes at 4 °C. Neutralize with 1N NaOH at 1:25 (4 µl to the above), test immediately or store at -80 °C  until testing.  

  

  

  

    Standards Preparation and Handling  

  

    1. Reconstitution: After warming lyophilized standard to room temperature, carefully open vial to avoid loss of material. Reconstitute lyophilized standard with 1.0 mL of deionized water to yield a stock standard. Allow the standard to equilibrate for at least 15 minutes before making dilutions. Vortex gently to mix.  

  

    2. Storage/ handling of reconstituted standard: After reconstitution, immediately aliquot standard stock in polypropylene vials at 50 μl per vial and freeze at -80°C  for up to 6 months. If necessary, store at 2-8° C for up to 8 hours prior to aliquotting/freezing. Do not leave reconstituted standard at room temperature.  

  

    3. Standards Preparation for Assay:  

  

    a. Prepare a 8000 pg/mL standard from the stock standard. Vortex to mix. (See dilution instructions on Instruction/Analysis Certificate.)  

  

    b. Add 300 μL Assay Diluent to 6 tubes. Label as 4000 pg/mL, 2000 pg/mL, 1000 pg/mL, 500 pg/mL, 250 pg/mL, and 125 pg/mL.  

  

    c. Perform serial dilutions by adding 300 μL of each standard to the next tube and vortexing between each transfer. Assay Diluent serves as the zero standard (0 pg/mL).  

  

  

  

    Working Detector Preparation  

  

    (Note: One-step incubation of Biotin/Streptavidin reagents.) Add required volume of Detection Antibody to Assay Diluent. Within 15 minutes prior to use, add required quantity of Enzyme Reagent, vortex or mix well. For recommended dilutions, see lot-specific Instruction/Analysis Certificate. For a full 96-well plate, prepare 12 mL of Working Detector. Discard any remaining Working Detector after use.  

  

  

  

    Detailed Assay Procedure  

  

    1. Coat microwells with 100 μL per well of Capture Antibody diluted in Coating Buffer. For recommended antibody coating dilution, see lot-specific Instruction/Analysis Certificate. Seal plate and incubate overnight at 4° C.  

  

    2. Aspirate wells and wash 3 times with ≥ 300 μL/well Wash Buffer. After last wash, invert plate and blot on absorbent paper to remove any residual buffer.  

  

    3. Block plates with ≥ 200 μL/well Assay Diluent. Incubate at RT for 1 hour.  

  

    4. Aspirate/wash as in step 2.  

  

    5. Prepare standard and sample dilutions in Assay Diluent. See "Standards Preparation and Handling."  

  

    6. Pipette 100 μL of each standard, sample, and control into appropriate wells. Seal plate and incubate for 2 hours at RT.  

  

    7. Aspirate/ wash as in step 2, but with 5 total washes.  

  

    8. Add 100 μL of Working Detector (Detection Antibody + SAv-HRP reagent) to each well. Seal plate and incubate for 1 hour at RT.  

  

    9. Aspirate/ wash as in step 2, but with 7 total washes. NOTE: In this final wash step, soak wells in wash buffer for 30 seconds to 1 minute for each wash.  

  

    10. Add 100 μL of Substrate Solution to each well. Incubate plate (without plate sealer) for 30 minutes at room temperature in the dark.  

  

    11. Add 50 μL of Stop Solution to each well.  

  

    12. Read absorbance at 450 nm within 30 minutes of stopping reaction. If wavelength correction is available, subtract absorbance at 570 nm from absorbance 450 nm.   

  

  

  

    Assay Procedure Summary  

  

    1. Add 100 μL diluted Capture Ab to each well. Incubate overnight at 4°C.  

  

    2. Aspirate and wash 3 times.  

  

    3. Block plates: 200 μL Assay Diluent to each well. Incubate 1 hr RT.  

  

    4. Aspirate and wash 3 times.  

  

    5. Add 100 μL standard or sample to each well. Incubate 2 hr RT.  

  

    6. Aspirate and wash 5 times.  

  

    7. Add 100 μL Working Detector (Detection Ab + SAv-HRP) to  

  

    each well. Incubate 1 hr RT.  

  

    8. Aspirate and wash 7 times (with 30 sec to 1 min soaks).  

  

    9. Add 100 μL Substrate Solution to each well. Incubate 30 min RT in dark.  

  

    10. Add 50 μL Stop Solution to each well. Read at 450 nm within 30 min with λ correction 570 nm.  

  

  

  

    Calculation of Results  

  

    Calculate the mean absorbance for each set of duplicate standards, controls and samples. Subtract the mean zero standard absorbance from each.  

  

    Plot the standard curve on log-log graph paper, with TGF-β1 concentration on the x-axis and absorbance on the y-axis. Draw the best fit curve through the standard points.  

  

    To determine the TGF-β1 concentration of the unknowns, find the unknown's mean absorbance value on the y-axis and draw a horizontal line to the standard curve. At the point of intersection, draw a vertical line to the x-axis and read the TGF-β1 concentration. If samples were diluted, multiply the TGF-β1 concentration by the dilution factor.  

  

    Computer data reduction may also be employed, utilizing log-log regression analysis.  

  

  

  

    Specificity  

  

    Cross Reactivity: The following factors were tested in the BD OptEIA™ assay at ≥ 10 ng/mL and no cross-reactivity (value ≥ 4 pg/mL) was identified.  

  

    Recombinant Human: IL-1α, IL-1β, IL-2, IL-3, IL-4, IL-5, IL-7, IL-8, IL-9, IL-10, IL-11, IL-12 (p40), IL-12 (p70), IL-13, IL-15, G-CSF, GM-CSF, IFN-γ, CD23, Lymphotactin, MIP-1α, MIP-1β, MCP-2, NT-3, PDGF-AA, SCF, TNF, LT-α (TNF-β), VEGF  

  

    Recombinant Mouse: IL-1β, IL-2, IL-3, IL-4, IL-5, IL-6, IL-7, IL-9, IL-10, IL-12 (p70), IL-15, IFN- γ, GM-CSF, TCA3, TNF  

  

    Recombinant Rat: IL-2, IL-4, IL-10, GM-CSF, IFN-γ, TNF  

  

    Other: Viral IL-10 (1 ng/mL), Rabbit TNF  

  

  

  

    Limitations of the Procedure  

  

    · Samples that generate absorbance values higher than the standard curve should be diluted with Standard Diluent and re-assayed.  

  

    · Interference by drug metabolites, soluble receptors, or other binding proteins in specimens has not been thoroughly investigated. The possibility of interference cannot be excluded.  

  

    · BD OptEIA™ Sets are intended for use as an integral unit. Do not mix reagents from different Set batches. Reagents from other manufacturers are not recommended for use in this Set.  

Product Notices

  1. For online training for BD OptEIA™ Set ELISA Techniques, please refer to http://www.bdbiosciences.com/OptEIA/downloads.shtml
  2. Samples that generate absorbance values higher than the standard curve should be diluted with Standard Diluent and re-assayed.
  3. Interference by drug metabolites, soluble receptors, or other binding proteins in specimens has not been thoroughly investigated. The possibility of interference cannot be excluded.
  4. BD OptEIA™ Sets are intended for use as an integral unit. Do not mix reagents from different Set batches. Reagents from other manufacturers are not recommended for use in this Set.
  5. Reagents which contain preservatives may be toxic if ingested, inhaled, or in contact with skin.
  6. Handle all serum and plasma specimens in accordance with NCCLS guidelines for preventing transmission of blood-borne infections.
  7. Caution: Sodium azide yields highly toxic hydrazoic acid under acidic conditions. Dilute azide compounds in running water before discarding to avoid accumulation of potentially explosive deposits in plumbing.
  8. Source of all serum proteins is from USDA inspected abattoirs located in the United States.
  9. ProClin is a trademark of Rohm and Haas Company.
559119 Rev. 1
Components
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Description Quantity/Size Part Number
Capture Antibody Purified Anti-Human TGF-β1 N/A 51-26341E
Detection Antibody Biotin Anti-Human TGF-β1 N/A 51-26342E
Recombinant Human TGF-β1 Lyophilized Standard N/A 51-26346E
Streptavidin-horseradish peroxidase conjugate (SAv-HRP) N/A 51-9002208
559119 Rev. 1
Citations & References
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Development References (6)

  1. Derynck R, Akhurst RJ. Differentiation plasticity regulated by TGF-beta family proteins in development and disease. Nat Cell Biol. 2007; 9(9):1000-1004. (Biology). View Reference
  2. Derynck R, Jarrett JA, Chen EY, et al. Human transforming growth factor-beta complementary DNA sequence and expression in normal and transformed cells. Nature. 1985; 316(6030):701-705. (Biology). View Reference
  3. Dünker N, Krieglstein K. Targeted mutations of transforming growth factor-beta genes reveal important roles in mouse development and adult homeostasis. Eur J Biochem. 2000; 267(24):6982-6988. (Biology). View Reference
  4. Hoefer M, Anderer FA. Anti-(transforming growth factor beta) antibodies with predefined specificity inhibit metastasis of highly tumorigenic human xenotransplants in nu/nu mice. Cancer Immunol Immunother. 1995; 41(5):302-308. (Biology). View Reference
  5. Miyazono K, Hellman U, Wernstedt C, Heldin CH. Latent high molecular weight complex of transforming growth factor beta 1. Purification from human platelets and structural characterization. J Biol Chem. 1988; 263(13):6407-6415. (Biology). View Reference
  6. Shi WK, Ye QW, Bao LP. Biological characterization of a monoclonal antibody TB 21 against human transforming growth factor-beta 1. Shi yan sheng wu xue bao. 1993; 26(2):141-150. (Biology). View Reference
View All (6) View Less
559119 Rev. 1

Please refer to Support Documents for Quality Certificates

Global - Refer to manufacturer's instructions for use and related User Manuals and Technical data sheets before using this products as described

Comparisons, where applicable, are made against older BD Technology, manual methods or are general performance claims.  Comparisons are not made against non-BD technologies, unless otherwise noted.

For Research Use Only. Not for use in diagnostic or therapeutic procedures.