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BV421 Mouse Anti-Human Terminal Transferase (TdT)
BV421 Mouse Anti-Human Terminal Transferase (TdT)
Flow cytometric analysis of TdT expression by human REH cells. Cells from the human REH (Acute B cell leukemia, ATCC CRL-8283) cell line were fixed with 1% paraformaldehyde and permeabilized with 0.1% Triton-X100. The cells were then stained with either BD Horizon™ BV421 Mouse IgG1, κ Isotype Control (Cat. No. 562438; dashed line histogram) or BD Horizon BV421 Mouse Anti-Human Terminal Transferase (TdT) antibody (Cat. No. 565230; solid line histogram). The fluorescence histogram showing Terminal Transferase (TdT) expression (or Ig Isotype control staining) was derived from gated events with the forward and side light-scatter characteristics of intact REH cells. flow cytometric analysis was performed using a BD™ LSR II Flow Cytometer System.
Flow cytometric analysis of TdT expression by human REH cells. Cells from the human REH (Acute B cell leukemia, ATCC CRL-8283) cell line were fixed with 1% paraformaldehyde and permeabilized with 0.1% Triton-X100. The cells were then stained with either BD Horizon™ BV421 Mouse IgG1, κ Isotype Control (Cat. No. 562438; dashed line histogram) or BD Horizon BV421 Mouse Anti-Human Terminal Transferase (TdT) antibody (Cat. No. 565230; solid line histogram). The fluorescence histogram showing Terminal Transferase (TdT) expression (or Ig Isotype control staining) was derived from gated events with the forward and side light-scatter characteristics of intact REH cells. flow cytometric analysis was performed using a BD™ LSR II Flow Cytometer System.
Product Details
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BD Horizon™
TdT; DNTT; Terminal transferase; Terminal addition enzyme
Human (QC Testing)
Mouse BALB/c IgG1, κ
Purified Human TdT
Intracellular staining (flow cytometry) (Routinely Tested)
5 µl
1791
AB_2739124
Aqueous buffered solution containing BSA and ≤0.09% sodium azide.
RUO


Preparation And Storage

Store undiluted at 4°C and protected from prolonged exposure to light. Do not freeze. The monoclonal antibody was purified from tissue culture supernatant or ascites by affinity chromatography. The antibody was conjugated with BD Horizon BV421 under optimum conditions, and unconjugated antibody and free BD Horizon BV421 were removed.

Recommended Assay Procedures

For optimal and reproducible results, BD Horizon Brilliant Stain Buffer should be used anytime two or more BD Horizon Brilliant dyes are used in the same experiment. Fluorescent dye interactions may cause staining artifacts which may affect data interpretation. The BD Horizon Brilliant Stain Buffer was designed to minimize these interactions. More information can be found in the Technical Data Sheet of the BD Horizon Brilliant Stain Buffer (Cat. No. 563794).

Staining Protocol:

1. Harvest cultured target cells into a 50 ml conical centrifuge tube. Centrifuge at 1000 rpm for 10 minutes, aspirate and discard supernatant.

2. Wash cell pellet once with PBS and mix gently. Centrifuge at 1000 rpm for 10 minutes, aspirate and discard supernatant.

3. Fix the cells by adding 15-20 ml of 1% formaldehyde while vortexing the pellet and incubate for 20 minutes at room temperature. Centrifuge at 1000 rpm for 10 minutes, aspirate and discard supernatant.

4. Add 15-20 ml of 0.1% Triton™ X-100 in PBS and incubate for 5-10 minutes. Centrifuge at 1000 rpm for 10 minutes, aspirate and discard supernatant.

5. Resuspend cells in PBS + 1% FBS (wash buffer) to a final concentration of approximately 1 x 10^6 cells per 50 µl.

6. Prepare one tube with 50 µl of cell suspension and add 20 µl of fluorescent Anti-Human TdT antibody. Prepare another tube with 50 µl of cell suspension and add 20 µl of a matched fluorescent Ig isotype control. Mix the tube contents gently, and incubate in the dark at room temperature for 20-30 minutes.

7. Wash cells with 2 ml of wash buffer per tube. Centrifuge for 5 minutes at 1000 rpm, aspirate and discard supernatant.

8. Resuspend cells in 500 µl of wash buffer and analyze by flow cytometry.

Product Notices

  1. This reagent has been pre-diluted for use at the recommended Volume per Test. We typically use 1 × 10^6 cells in a 100-µl experimental sample (a test).
  2. Please refer to www.bdbiosciences.com/us/s/resources for technical protocols.
  3. Triton is a trademark of the Dow Chemical Company.
  4. Pacific Blue™ is a trademark of Molecular Probes, Inc., Eugene, OR.
  5. Source of all serum proteins is from USDA inspected abattoirs located in the United States.
  6. 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.
  7. For fluorochrome spectra and suitable instrument settings, please refer to our Multicolor Flow Cytometry web page at www.bdbiosciences.com/colors.
  8. An isotype control should be used at the same concentration as the antibody of interest.
565230 Rev. 1
Antibody Details
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E17-1519

The E17-1519 monoclonal antibody specifically recognizes Terminal deoxynucleotidyl transferase (TdT), which is also known as Terminal transferase, or DNA nucleotidylexotransferase (DNTT). TdT is a 60 kDa nuclear polymerase that catalyzes the template-independent addition of deoxynucleotides to the 3'-hydroxyl termini of single-stranded oligonucleotide primer segments. TdT can contribute to antigen receptor diversity by N region diversification of rearranging immunoglobulin heavy chain and T cell receptor gene segments during pre-B and pre-T cell development. It is also expressed by certain lymphomas and leukemias.

The antibody was conjugated to BD Horizon BV421 which is part of the BD Horizon Brilliant™ Violet family of dyes. With an Ex Max of 407-nm and Em Max at 421-nm, BD Horizon BV421 can be excited by the violet laser and detected in the standard Pacific Blue™ filter set (eg, 450/50-nm filter). BD Horizon BV421 conjugates are very bright, often exhibiting a 10 fold improvement in brightness compared to Pacific Blue conjugates.

565230 Rev. 1
Format Details
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BV421
The BD Horizon Brilliant Violet™ 421 (BV421) Dye is part of the BD Horizon Brilliant Violet™ family of dyes. This polymer-technology based dye has an excitation maximum (Ex Max) of 407-nm and an emission maximum (Em Max) at 423-nm. Driven by BD innovation, BV421 is designed to be excited by the violet laser (405-nm) and detected using an optical filter centered near 420-nm (e.g., a 431/28-nm or 450/50-nm bandpass filter). BV421 is an ideal alternative for V450 as it is approximately ten times brighter with less spillover into the BV510/V500 detector. Please ensure that your instrument’s configurations (lasers and optical filters) are appropriate for this dye.
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BV421
Violet 405 nm
407 nm
423 nm
565230 Rev.1
Citations & References
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Development References (4)

  1. Fuller SA, Philips A, Coleman MS. Affinity purification and refined structural characterization of terminal deoxynucleotidyltransferase. Biochem J. 1985; 231(1):105-113. (Biology). View Reference
  2. Gopcsa L, Banyai A, Jakab K, et al. Extensive flow cytometric characterization of plasmacytoid dendritic cell leukemia cells.. Eur J Haematol. 2005; 75(4):346-51. (Clone-specific: Flow cytometry). View Reference
  3. Keren DF, Hanson CA, Hurtubise PE. David F. Keren, Curtis A. Hanson, Paul E. Hurtubise., ed. Flow cytometry and clinical diagnosis. Chicago: ASCP Press; 1994:1-676.
  4. Sasaki R, Yuasa Y, Masuyama A, Takaku F, Bollum FJ. Production of a specific monoclonal antibody to terminal deoxynucleotidyl transferase (TdT) and the extensive studies of TdT in patients with hematological malignancies. 1993; 25(4):223-225. (Biology). View Reference
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565230 Rev. 1

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