Cell-Vive™ GMP MojoSort™ Human CD4 Nanobeads

Kit Details

Kit Contents

For Cat# 480210:

• 1 vial containing 100 μL of Human CD4 Nanobeads

 

For Cat# 480211:

• 1 vial containing 1 mL of Human CD4 Nanobeads

Product Details

Reactivity

Human

Formulation

Particle: Aqueous solution containing 0.3% recombinant HSA

Endotoxin Level

< 0.1 EU/Test (< 10 EU/mL)

Capacity

Based on in-house testing, process up to the following total cells per kit:

 

	Handheld Magnet	Column-Based
Cat# 480210	1x108	4x108
Cat# 480211	1x109	4x109

Note: Each commercially available magnetic cell separation system has a different maximum labeled cell number that can be processed in a single reaction. To avoid overloading or clogging, confirm the system capacity. If additional cells are needed, consider running multiple separation reactions and pooling target fractions to reach desired cell recovery.

Preparation

Serum-free recombinant antibody was purified by affinity chromatography and conjugated with magnetic nanobeads under optimized conditions in a GMP facility. Contains no preservatives.

Storage & Handling

Undiluted at 4°C (2°C-8°C)

Application

Cell Separation (MojoSort™) - Quality Tested

Recommended Usage

10 μL of Human CD4 Nanobeads for 1 x 10⁷ PBMCs in 100 μL separation buffer

 

Nanobead dilution to use in column: 4x

Application Notes

This kit is optimized for the positive selection or depletion of CD4+ cells from human peripheral blood mononuclear cells (PBMCs). Alternate sources of cell suspensions may require protocol optimization.

 

Note – To obtain highly pure CD4+ T cells, a prior step to deplete monocytes is recommended.

 

Recommended protocol for positive selection or depletion of CD4+ cells from human PBMCs

 

Isolate PBMCs using density gradient centrifugation. If working with another tissue, prepare a single cell suspension according to standard protocols. Excess dead or red blood cells may increase non-specific binding and removal prior to separation may increase performance. Filter the cell suspension with a sterile 40 µm nylon cell strainer for optimal performance.

 

Use sterile consumables and work in a biosafety cabinet. To maintain cell viability and reduce non-specific binding, work quickly, keep cells cold, and use pre-chilled separation buffer kept on ice throughout the procedure.

 

Separator Protocol

This procedure is optimized at 1 x 10⁷ cells/test. When working with more cells, optimize the conditions to your specific cell number and tissue for best results.

1. Resuspend cells at 1 x 10⁸ cells/mL with Cell-Vive™ CD Cell Separation Buffer, GMP (Cat# 420512) or other commercially available separation buffer.

2. Aliquot 100 µL (10⁷ cells) into appropriate tube.

   Optional: Reserve an aliquot of unseparated cells as a control.

   1. Scale up to 2 mL (2 x 10⁸ cells) in 12 x 75 mm (5 mL) polypropylene tube for 5 mL magnet (Cat# 480019).
   2. Scale up to 10 mL (1 x 10⁹ cells) in 17 x 100 mm (14 mL) polypropylene tube for 14 mL magnet (Cat# 480020).

3. Resuspend the antibody-conjugated nanobeads well by vortexing at maximum speed, at least 5 touches. Add 10 µL of conjugated nanobeads per 10⁷ cells. Immediately, gently mix well to fully incorporate, and incubate on ice for 15 minutes.

   Optional: Washing cells to remove unbound nanobeads may improve purity but reduce yield. Use separation buffer, gently mix and centrifuge the cell suspension at 300xg for 5 minutes and discard supernatant.

4. Add separation buffer, up to indicated volume. Mix well by pipetting to fully incorporate.
   1. 3.5 mL for separating ≤ 2 x 10⁸ cells using the 5 mL magnet.
   2. 5 mL for separating ≤ 5 x 10⁸ cells, or 10 mL for separating 5 x 10⁸ - 1 x 10⁹ cells, using the 14 mL magnet.
5. Place the tube in the MojoSort™ magnet to perform separation.
   1. 5 minutes separation time for 5 mL magnet.
   2. 10 minutes separation time for 14 mL magnet.
6. Carefully, pour out the unlabeled fraction into a collection tube. If these are your cells of interest, do not discard. Remove tube containing magnetically labeled fraction from the magnet, do not discard.
7. Repeat steps 4-6 on the magnetically labeled fraction for a total of 3 separations for optimal purity. Pool the unlabeled negative fractions and keep the labeled cells for downstream applications. The fraction that is not of interest may be useful as staining controls, to monitor purity/yield, or other purposes.

 

Column Protocol

Prepare antibody-conjugated nanobeads at dilution recommended for column use found on the TDS. Vortex nanobeads well at maximum speed to resuspend before diluting with Cell-Vive™ CD Cell Separation Buffer, GMP (Cat# 420512) or other commercially available separation buffer.

 

Cat# 480210/480211 recommended nanobead dilution to use in column: 4x

 

There are several types of commercially available columns, depending on your application. Choose the one that best fits your experiment. Column cell capacity is dependent on column volume, target cell abundance, type, and size. Protocols should be optimized empirically for use on different column systems

1. Resuspend cells at 1 x 10⁸ cells/mL with separation buffer.

   Optional: Filter cell suspension through a 40 µm filter before addition to column for best results.

2. Aliquot 100 µL (10⁷ cells) into appropriate tube.

   Optional: Reserve an aliquot of unseparated cells as a control.

   Note: Scale up volumes for larger cell numbers dependent on column capacity. For example, add 100 µL nanobeads for 1 x 10⁸ cells (equivalent to 10 tests at 1 x 10⁷ cells/test) in 1 mL separation buffer.

3. Resuspend the diluted antibody-conjugated nanobeads well by vortexing at maximum speed, at least 5 touches. Add 10 µL of conjugated nanobeads per 10⁷ cells. Immediately, mix well to fully incorporate, and incubate on ice for 15 minutes.
4. Wash the sample with separation buffer and gently mixing. Centrifuge the cell suspension at 300xg for 5 minutes and discard the supernatant.

5. Resuspend well in 1 mL of separation buffer by pipetting and place on ice.

   Note: We recommend a maximum cell density of 1 x 10⁸ million cells/mL of buffer (equivalent to 10 tests/mL of buffer) for column loading. A lower cell density may improve recovery. User may need to optimize cell loading density. If working with larger cell sample volumes, sample may need to be loaded on multiple columns and pooled after separation.

6. Prepare the column by placing in the appropriate corresponding magnetic separator and rinsing with 3 mL separation buffer. Discard the flow through.

7. Place an appropriate tube below the column to collect the negative fraction. Add the labeled cell suspension to the column and collect the fraction containing the unlabeled cells. If these are the cells of interest, do not discard.

   Optional: Filter cell suspension through a sterile 40 µm filter before addition to column.

8. Wash the column with 3 mL separation buffer. Collect the flow-through containing the unlabeled cells and pool with unlabeled fraction collected at step 7. If these are the cells of interest, do not discard. Place tube containing unlabeled cells on ice. The negative fraction flow-through may be useful as controls, to monitor purity/yield, or other purposes.
9. Remove the column from the magnet and place in a collection tube. Allow the column to demagnetize for 1-2 minutes. Add 5 mL separation buffer to the column reservoir and flush the magnetically labeled fraction into the collection tube with a plunger or supplied device. This contains the magnetically labeled cells; do not discard.

Disclaimer

BioLegend Cell-Vive™ GMP MojoSort™ cell separation tools are for research use only. Suitable for ex vivo cell processing use. Not for use in diagnostic or therapeutic use. Not for resale. BioLegend will not be held responsible for patent infringement or other violations that may occur with the use of our products.

Antigen Details

Gene ID

NA

UniProt

View information about CD4 on UniProt.org

Documentation

• Technical data sheet
• Certificate of Analysis
• Safety Data Sheet

Reviews

Related Pages & Pathways

Related FAQs

Certificate of Analysis