StemXVivo Methylcellulose Concentrate
R&D Systems, part of Bio-Techne | Catalog # HSC011
Key Product Details
Summary for StemXVivo Methylcellulose Concentrate
For the growth and differentiation of human and mouse hematopoietic stem cells using Iscove’s Modified Dulbecco’s Media or any other basal media.
Key Benefits
- Is not restricted to use with Iscove's Modified Dulbecco's Media (IMDM)
- Supports reproducible in vitro growth of hematopoietic stem and progenitor cells
- Can be supplemented with user-defined cytokines and growth factors
- Excellent optical clarity facilitates colony identification
- High lot-to-lot consistency decreases variation
Why Make Methylcellulose Media from a Concentrated Stock Solution Rather than a Powder?
Although Methylcellulose is soluble at low temperatures, adding powdered methylcellulose to cold water results in clumping of the methylcellulose rather than its dissolution.
Using hot water to dissolve methylcellulose is also not an option since methylcellulose is insoluble in hot water. Therefore, methylcellulose stock solutions are made by adding methylcellulose to hot water (~80 °C) and then decreasing the temperature of the solution until the methylcellulose is fully dissolved. To avoid this time consuming and potentially inconsistent process, R&D Systems offers high quality StemXVivo® Methylcellulose Concentrate with superior optical clarity to support optimal colony growth, enumeration, and identification.
R&D Systems StemXVivo® Methylcellulose Concentrate:
- Optical clarity facilitates colony identification.
- High lot-to-lot consistency decreases variation.
- Supports reproducible in vitro growth of hematopoietic stem and progenitor cells.
- Can be supplemented with user-defined cytokines and growth factors.
- Increased cloning efficiency and improved colony growth compared to agar.
- 50 mL of 2.8% Methylcellulose (1500 cps) in water.
| Contents | Concentration |
| Methylcellulose (1500 cps) in water | 2.8% |
Stability and Storage
- The Methylcellulose Concentrate should be stored at ≤-20 °C upon receipt. Storage at 2 °C to 8 °C is not recommended.
Precaution
- The acute and chronic effects of overexposure to this media are unknown. Safe laboratory procedures should be followed and protective clothing should be worn when handling this media.
Limitations
- The safety and efficacy of this product in diagnostic or other clinical uses has not been established.
- The reagent should not be used beyond the expiration date indicated on the label.
- Results may vary due to variations between hematopoietic progenitors derived from different individuals.
Human Methylcellulose Stock and Base Media
| Catalog # | Product Description | Volume | Colonies Selected for | Contains Serum | Cytokines Included |
| HSC001 | Methylcellulose Stock Solution | 100 mL | N/A* | No | None |
| HSC002 | Human Methylcellulose Base Media | 90 mL | N/A* | Yes | None |
| HSC011 | StemXVivo® Methylcellulose Concentrate | 50 mL | N/A* | No | None |
Complete Human Methylcellulose Media
| Catalog # | Product Description | Volume | Colonies Selected for | Contains Serum | Cytokines Included |
| HSC003 | Human Methylcellulose Complete Media | 100 mL | BFU-E CFU-E CFU-G CFU-GEMM CFU-GM CFU-M | Yes | Epo GM-CSF IL-3 SCF |
| HSC004 | Human Methylcellulose Complete Media without Epo | 100 mL | CFU-G CFU-GM CFU-M | Yes | SCF GM-CSF IL-3 |
| HSC005 | Human Methylcellulose Enriched Media | 100 mL | BFU-E CFU-E CFU-G CFU-GEMM CFU-GM CFU-M | Yes | Epo G-CSF GM-CSF IL-3 IL-6 SCF |
| HSC005SF | Human Methylcellulose Serum-Free Enriched Media | 100 mL | BFU-E CFU-E CFU-G CFU-GEMM CFU-GM CFU-M | No | Epo G-CSF GM-CSF IL-3 IL-6 SCF |
Mouse Methylcellulose Stock and Base Media
| Catalog # | Product Description | Volume | Colonies Selected for | Contains Serum | Cytokines Included |
| HSC001 | Methylcellulose Stock Solution | 100 mL | N/A* | No | None |
| HSC006 | Mouse Methylcellulose | 90 mL | N/A* | Yes | None |
| HSC011 | StemXVivo® Methylcellulose Concentrate | 50 mL | N/A* | No | None |
Complete Mouse Methylcellulose Media
| Catalog # | Product Description | Volume | Colonies Selected for | Contains Serum | Cytokines Included |
| HSC007 | Mouse Methylcellulose Complete Media | 100 mL | BFU-E CFU-E CFU-G CFU-GEMM CFU-GM CFU-M | Yes | Epo IL-3 IL-6 SCF |
*Base media and stock solutions do not contain cytokines and will not support colony growth unless conditioned media, cytokines, or other culture supplements are added.
|
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. |
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Mouse Hematopoietic Colony Formation Using the Methylcellulose-based Colony Forming Cell Assay. Burst forming unit-erythroid (BFU-E) colonies are defined as clusters with a minimal of 30 cells that can be seen from day 7 onward. Each individual cluster consisted of tiny, irregular shaped cells that may appear fused together. Each cluster normally contains 5 - 8 cells, and the size of the cluster is similar to that of a single macrophage. The cluster may vary in sizes and color. A large BFU-E is usually bright red and is differentiable even without the use of a microscope. Smaller BFU-E may not appear red in color but is distinguishable based on the morphology.B. Colony forming unit-macrophage (CFU-M; left) are clonogenic progenitors of macrophages that give rise to a homogenous population of macrophages. Colony forming unit-granulocyte (CFU-G; right) 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.Colony forming unit-granulocyte, erythrocyte, macrophage, megakaryocyte (CFU-GEMM) are multi-lineage progenitors that give rise to the lineage of erythroid, granulocytes, macrophages, and megakaryocytes as the name indicates. It can be identified as reddish colored cells (erythroid) mixed with colorless cells (granulocytes, macrophages, and megakaryocytes) in a single colony. This progenitor is typically the largest colony on the culture dish; occasionally CFU-GM may attain a size comparable or larger than that of CFU-GEMM. |
Assay Procedure
Refer to the product datasheet for complete product details.
Briefly, Methylcellulose Stock Solution is used in the Colony Forming Cell Assay using the following procedure:
- Prepare human mononuclear cells or mouse/rat bone marrow cells
- Add cells and desired supplements to Methylcellulose Stock Solution
- Plate and incubate cells
- Identify and count colonies
Reagent supplied in the StemXVivo® Methylcellulose Concentrate (Catalog # HSC011):
- 50 mL of 2.8% Methylcellulose (1500 cps) in water.
| Contents | Concentration |
| Methylcellulose (1500 cps) in water | 2.8% |
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
- 100 mm culture plates
- 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
Reagents
- Cells derived from mouse bone marrow, spleen, peripheral blood, or fetal liver. Mice are routinely used between 6 - 12 weeks.
- Iscove's Modified Dulbecco’s Media (IMDM)
- Fetal Bovine Serum
- IMDM/2% Fetal Bovine Serum
- (Optional) Flow Cytometry Mouse Lyse Buffer (Catalog # FC003)
Materials
- 100 mm culture plates
- 35 mm culture plates
- 15 mL centrifuge tubes
- 10 mL syringes
- 3 mL syringes
- 5 mL vials
- 16 gauge 1½ inch needle
- 14 gauge laboratory pipetting needle
- Serological pipettes
- Pipettes and pipette tips
Equipment
- 37 °C and CO2 humidified incubator
- Centrifuge
- Vortex mixer
- Hemocytometer
- Inverted Microscope
Procedure for the Human Colony Forming Cell Assay
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 StemXVivo® Methylcellulose Concentrate 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 10 minutes.
Remove the supernatant.
Resuspend the cells in IMDM 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 StemXVivo® Methylcellulose Stock Solution. 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.
Procedure for the Mouse Colony Forming Cell Assay
Pass a suspension of mouse bone marrow cells through a 70 μm nylon strainer to remove clumps and debris.
Remove red blood cells if necessary.
Wash the cells with IMDM/2% FBS by centrifugation at 300 x g for 8 minutes and pool the cells.
Remove the supernatant.
Resuspend the cells in 10 mL of IMDM/2% FBS.
Thaw aliquots of StemXVivo® Methylcellulose Stock Solution at room temperature for approximately 30 minutes.
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 10 minutes.
Remove the supernatant.
Resuspend the cells in IMDM 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 StemXVivo® Methylcellulose Stock Solution. 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 8-12 days.
Use an inverted microscope and a scoring grid to identify and count individual colonies.
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