Human Methylcellulose Base Media
R&D Systems, part of Bio-Techne | Catalog # HSC002
Key Product Details
|
Human Hematopoietic Colony Formation Using the Methylcellulose-based Colony Forming Cell Assay. Colony forming unit-erythroid (CFU-E) are clonogenic progenitors that produce only one or two clusters with each cluster containing from 8 to approximately 100 hemoglobinized erythroblasts. It represents the more mature erythroid progenitors that have less proliferative capacity.B. Colony forming unit-granulocyte (CFU-G) are clonogenic progenitors of granulocytes that give rise to a homogeneous population of eosinophils, basophils, or neutrophils.C. Colony forming unit-granulocyte, macrophage (CFU-GM) are progenitors that give rise to colonies containing a heterogeneous population of macrophages and granulocytes. The morphology is similar to the CFU-M and CFU-G descriptions.D. Burst forming unit-erythroid (BFU-E) colonies can be described as small (3 to 8 clusters), intermediate (9 to 16 clusters), or large (more than 16 clusters) according to the number of clusters present. These are primitive erythroid progenitors that have high proliferative capacity.E. Colony forming unit-macrophage (CFU-M) are clonogenic progenitors of macrophages that give rise to a homogenous population of macrophages.F. Colony forming unit-granulocyte, erythrocyte, macrophage, megakaryocyte (CFU-GEMM) are multi-lineage progenitors that give rise to erythroid, granulocyte, macrophage and megakaryocyte lineages, as the name indicates. |
Assay Procedure
Refer to the product datasheet for complete product details.
Briefly, Human Methylcellulose Base Media is used in the Colony Forming Cell Assay using the following procedure:
- Prepare human mononuclear cells
- Add cells and desired supplements to Human Methylcellulose Base Media
- Plate and incubate cells
- Identify and count colonies
Reagents supplied in the Human Methylcellulose Base Media (Catalog # HSC002):
- 90 mL of Human Methylcellulose Base Media and 15 mL of Cell Resuspension Solution.
| Contents | Concentration (when diluted to a final volume of 100 mL) |
| Methylcellulose (1500 cps) in Iscove’s Modified Dulbecco's Medium | 1.4% |
| Fetal Bovine Serum | 25% |
| Bovine Serum Albumin | 2% |
| L-Glutamine | 2 mM |
| 2-Mercaptoethanol | 5 x 10-5 M |
Cell Resuspension Solution (15 mL)
| Contents | Concentration |
| Fetal Bovine Serum in Iscove’s Modified Dulbecco’s Medium | 50% |
Reagents
- Cells derived from bone marrow, blood, or enriched CD34+ cells
- Iscove's Modified Dulbecco's Media (IMDM)
- Ca2+/Mg2+-free Hank's Balanced Salt Solution (HBSS)
- Ficoll-Paque™ PLUS (GE Healthcare) or equivalent
Materials
- 35 mm culture plates
- 15 mL centrifuge tubes
- 50 mL centrifuge tubes
- 10 mL syringes
- 3 mL syringes
- 5 mL vials
- 16 gauge 1½ inch needle
- 14 gauge laboratory pipetting needle
- Heparinized syringes or Vacutainers®
- Serological pipettes
- Pipettes and pipette tips
Equipment
- 37 °C and CO2 humidified incubator
- Centrifuge
- Vortex mixer
- Hemocytometer
- Inverted Microscope
Prepare mononuclear cells by Ficoll-Paque gradient centrifugation.
Wash the cells two times with HBSS and pool the cells.
Centrifuge the cells at 400 x g for 10 minutes.
Thaw aliquots of Methylcellulose Stock Solution at room temperature.
Resuspend mononuclear cells in 10 mL of IMDM.
Perform a cell count.
Transfer the appropriate volume of cells plus a slight excess into a new 15 mL centrifuge tube.
Centrifuge at 300 x g for 5 minutes.
Remove the supernatant.
Resuspend the cells in Cell Resuspension Solution to the desired stock cell number to generate a 10X stock concentration.
Combine the appropriate volume of 10X cell stock with the desired cell culture supplements/cytokines, and Human Methylcellulose Base Media. The final methylcellulose concentration should be 1.27%.
Vortex the samples vigorously.
Wait approximately 20 minutes to allow air bubbles to escape.
Add 1.1 mL of the cell mixture to a 35 mm culture plate using a 3 mL syringe and a 16 gauge needle.
Spread the media evenly by gently rotating the plate.
Place two 35 mm plates into a 10 cm plate.
Add one uncovered 35 mm plate that contains 3-4 mL of sterile water.
Cover the 10 cm plate and place it in a 37 °C and 5% CO2 incubator.
Incubate the cells for 14-16 days.
Use an inverted microscope and a scoring grid to identify and count individual colonies.
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