CellRapeutics™ Pan T Cell Isolation kit
Reagents contain sodium azide. Under acidic conditions sodium azide yields hydrazoic acid, which is extremely toxic. Azide compounds should be diluted with running water before discarding. These precautions are recommended to avoid deposits in plumbing where explosive conditions may develop.
1 mL Pan T Cell Biotin-Antibody Cocktail, human: Cocktail of biotin-conjugated monoclonal anti-human antibodies against CD14, CD15, CD16, CD19, CD34, CD36, CD56, CD123, and CD235a (Glycophorin A).
2 mL Pan T Cell MicroBead Cocktail, human: MicroBeads conjugated to monoclonal antibiotin antibody (isotype: mouse IgG1) and monoclonal anti-CD61 antibody (isotype: mouse IgG1).
For 10⁹ total cells, up to 100 separations.
Principle of the MACS Separation
Using the Pan T Cell Isolation Kit, human T cells are isolated by depletion of non-target cells (negative selection). Non-target cells are labeled with a cocktail of biotin-conjugated monoclonal antibodies and the Pan T Cell MicroBead Cocktail. In between and after the two labeling steps no washing steps are required. The magnetically labeled non-target cells are depleted by retaining them within a MACS Column in the magnetic field of a MACS Separator, while the unlabeled T cells run through the column.
The Pan T Cell Isolation Kit has been developed for the isolation of untouched T cells from human peripheral blood mononuclear cells (PBMCs). Non-target cells, i.e., monocytes, neutrophils, eosinophils, B cells, stem cells, dendritic cells, NK cells, granulocytes, or erythroid cells are labeled by using a cocktail of biotin-conjugated antibodies. The cocktail contains antibodies against CD14, CD15, CD16, CD19, CD34, CD36, CD56, CD123, and CD235a (Glycophorin A). Subsequently, non-target cells are magnetically labelled with the Pan T Cell MicroBead Cocktail. Isolation of highly pure T cells is achieved by depletion of magnetically labeled cells.
Studies on signal requirements for T cell activation, induction of T cell proliferation, induction of T cell anergy, etc. Studies on signal transduction in T cells.
Studies on regulation of T cell cytokine expression.
Product format/Physical form
All components are supplied in buffer containing stabilizer and 0.05% sodium azide.
Store protected from light at 2-8 °C. Do not freeze. The expiration date is indicated on the vial label.
Reagent and instrument requirements
Buffer: Prepare a solution containing phosphate-buffered saline (PBS), pH 7.2, 0.5% bovine serum albumin (BSA), and 2 mM EDTA by diluting MACS BSA Stock Solution 1:20 with autoMACS Rinsing Solution. Keep buffer cold (2-8 °C). Degas buffer before use, as air bubbles could block the column.
Note: EDTA can be replaced by other supplements such as anticoagulant citrate dextrose formula-A (ACD-A) or citrate phosphate dextrose (CPD). BSA can be replaced by other proteins such as human serum albumin, human serum, or fetal bovine serum (FBS). Buffers or media containing Ca2+ or Mg2+ are not recommended for use.
MACS Columns and MACS Separators: Choose the appropriate MACS Separator and MACS Columns according to the number of labeled cells and to the number of total cells.
Note: Column adapters are required to insert certain columns into the VarioMACS™ or SuperMACS™ II Separators.
(Optional) Fluorochrome-conjugated antibodies for flow cytometric analysis, e.g., CD3-FITC.
(Optional) Anti-FoxP3-APC or AntiFoxP3-PE and FoxP3 Staining Buffer Set.
(Optional) Propidium Iodide Solution or 7-AAD for flow cytometric exclusion of dead cells.
(Optional) Dead Cell Removal Kit for the depletion of dead cells.
(Optional) Pre-Separation Filters, 30 µm to remove cell clumps.
When working with anticoagulated peripheral blood or buffy coat, peripheral blood mononuclear cells (PBMCs) should be isolated by density gradient centrifugation, for example, using Ficoll-Paque™.
▲ Note: To remove platelets after density gradient separation, resuspend cell pellet in buffer and centrifuge at 200×g for 10-15 minutes at 20 °C. Carefully aspirate supernatant. Repeat washing step.
When working with tissues or lysed blood, prepare a single-cell suspension using standard methods.
▲ Dead cells may bind non-specifically to MACS MicroBeads. To remove dead cells, we recommend using density gradient centrifugation or the Dead Cell Removal Kit.
▲ Work fast, keep cells cold, and use pre-cooled solutions. This will prevent capping of antibodies on the cell surface and non-specific cell labeling.
▲ Volumes for magnetic labeling given below are for up to 10⁷ total cells. When working with fewer than 10⁷ cells, use the same volumes as indicated. When working with higher cell numbers, scale up all reagent volumes and total volumes accordingly (e.g. for 2×10⁷ total cells, use twice the volume of all indicated reagent volumes and total volumes).
▲ For optimal performance it is important to obtain a single-cell suspension before magnetic labeling. Pass cells through 30 µm nylon mesh (Pre-Separation Filters, 30 µm) to remove cell clumps which may clog the column. Moisten filter with buffer before use.
▲ The recommended incubation temperature is 2-8 °C. Higher temperatures and/or longer incubation times may lead to non-specific cell labeling. Working on ice may require increased incubation times. 1. Determine cell number.
2. Centrifuge cell suspension at 300×g for 10 minutes. Aspirate supernatant completely.
3. Resuspend cell pellet in 40 µL of buffer per 10⁷ total cells.
4. Add 10 µL of Pan T Cell Biotin Antibody Cocktail per 10⁷ total cells.
5. Mix well and incubate for 5 minutes in the refrigerator (2-8 °C).
6. Add 30 µL of buffer per 10⁷ cells.
7. Add 20 µL of Pan T Cell MicroBead Cocktail per 10⁷ cells.
8. Mix well and incubate for an additional 10 minutes in the refrigerator (2-8 °C).
9. (Optional) Add staining antibodies, e.g., 10 µL of CD3-FITC, and incubate for 5 minutes in the dark in the
refrigerator (2-8 °C).
10. Proceed to "magnetic separation".
▲ Note: A minimum of 500 µL is required for magnetic separation. If necessary, add buffer to the cell suspension.
▲ Choose an appropriate MACS Column and MACS Separator according to the number of labeled cells and the number of total cells. For details refer to table in section "Reagent and instrument requirements".
▲ Always wait until the column reservoir is empty before proceeding to the next step.
Magnetic separation with LS Columns
1. Place column in the magnetic field of a suitable MACS Separator. For details refer to the respective MACS Column data sheet.
2. Prepare column by rinsing with 3 mL of buffer.
3. Apply cell suspension onto the column. Collect flow-through containing unlabeled cells, representing the enriched T cells.
4. Wash column with 3 mL of buffer. Collect unlabeled cells that pass through, representing the enriched T cells, and combine with the flow-through from step 3.
5. (Optional) Remove column from the separator and place it on a suitable collection tube. Pipette 5 mL of buffer onto the column. Immediately flush out the magnetically labeled non-T cells by firmly pushing the plunger into the column.
Magnetic separation with XS Columns
For instructions on the column assembly and the separation refer to the XS Column data sheet.
Cell separation with the autoMACS Pro Separator
▲ Buffers used for operating the autoMACS Pro Separator should have a temperature of ≥10 °C.
Cell separation with the autoMACS® Pro Separator using autolabeling for a fully automated procedure
1. Turn on the instrument for automatic initialization (automated preparation and priming procedure).
2. Program autolabeling by selecting Read Reagent in the "reagent menu" tab and scan the 2D barcode on each reagent vial with the barcode scanner on the autoMACS Pro instrument. Place the reagent into the appropriate space on the reagent rack.
3. Place sample and collection tubes into the sample rack. Sample tube should be in row A, and the collection tubes in rows B and C.
4. Select the reagent name for each sample from the labeling submenu (the correct labeling, separation and wash protocols will be selected automatically).
5. Enter sample volume into the Volume submenu.
6. Select run.
Magnetic separation with the autoMACS Pro Separator using manual labeling
1. Label the sample as described in section "Magnetic labeling"
2. Prepare and prime the instrument.
3. Apply tube containing the sample and provide tubes for collecting the labeled and unlabeled cell fractions. Place
sample tube in row A of the tube rack and the fraction collection tubes in rows B and C.
4. For a standard separation choose the following program:
Collect negative fraction in row B of the tube rack. This fraction represents the enriched T cells.
5. (Optional) Collect positive fraction from row C of the tube rack. This fraction represents the magnetically labelednon-T cells.
(Optional) Evaluation of T cell purity
The purity of the enriched T cells can be evaluated by flow cytometry, e.g. using the MACSQuant Analyzer, or fluorescence microscopy. Stain aliquots of the cell fractions with a fluorochrome-conjugated antibody against a T cell marker, e.g., CD3-FITC, as recommended in the respective data sheet. Analyze cells by flow cytometry or fluorescence microscopy. Labeling of non-T cells with the Biotin-Antibody Cocktail can be visualized by counter-staining with fluorochrome-conjugated anti-biotin antibodies, e.g., AntiBiotin-PE or Anti-Biotin-APC. Staining with fluorochrome-conjugated streptavidin is not recommended.
For research use only. Not intended for any clinical use. No products from Creative Biolabs may be resold, modified for resale or used to manufacture commercial products without prior written approval from Creative Biolabs.