StemXVivo Serum-Free Human MSC Expansion Media
StemXVivo Serum-Free Human MSC Expansion Media Summary
A complete media formulated and optimized for the maintenance and expansion of purified human MSCs.
- Defined medium reduces experimental variation
- All components were selected and optimized for human MSCs
- Ready to use
Why Culture Human MSCs in a Defined, Serum-Free Medium?
Mesenchymal stem/stromal cells (MSCs) are a rare population of multipotent cells that can be derived from a number of tissues such as bone marrow, adipose, and placenta.
Given their rarity, MSCs are most often expanded in vitro under specific culture conditions.
StemXVivo® Serum-Free MSC Expansion Media:
- Supports reproducible MSC growth in vitro.
- Can be supplemented with user-defined cytokines and growth factors, although these are not needed for culture
- Has been developed and optimized for use with human MSCs.
The term ‘mesenchymal stromal cells’ is commonly used to describe a heterogeneous population of cultured cells that are adherent to plastic, have a distinct morphology, and express a specific set of marker proteins. Within this heterogeneous population are cells referred to as ‘mesenchymal stem cells.’
Mesenchymal stem cells are multipotent, self-renewing cells that have the ability to differentiate into adipocytes, chondrocytes, and osteoblasts when cultured in vitro. Read More about MSC Nomenclature
StemXVivo® MSC Expansion Media Components
Supplied in a 500 mL volume, this medium contains high quality factors to support MSC expansion in vitro.
- Supplemented with sodium bicarbonate
- Does not contain antibiotics
*Mesenchymal stem cells grown in StemXVivo® Serum-Free MSC Expansion Media must be cultured on extracellular matrix (ECM) protein-coated (e.g., Recombinant Human Fibronectin (Catalog # 4305-FNB or equivalent) plates (not included).
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Morphology of Human MSCs. Human MSCs were cultured with StemXVivo® Serum-Free Human MSC Expansion Media (Catalog # CCM014) on plates coated with Recombinant Human Fibronectin (Catalog # 4305-FNB). Characteristic cell morphology was observed at 90% confluency.
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Phenotypic Analysis of Human MSCs Expanded in StemXVivo® Serum-Free Human Mesenchymal Stem Cell Expansion Media for 3 Passages.Human MSCs were stained with the following Anti-Human Antibodies to verify MSC identity: CD105 (Catalog # FAB10971P), CD90 (Catalog FAB2067P), CD73 (Catalog # FAB5795P), CD44 (Catalog # FAB4948P), CD45 (Catalog # FAB1430P), CD11b (Catalog # FAB16991P), and CD34 (filled histograms). Cells were analyzed using a Becton Dickinson FACSCalibur™ flow cytometer. For each antibody, isotype-matched controls are shown with an open histogram.
2006 Proposed Change to MSC Nomenclature
Although mesenchymal stromal cells were once referred to as ‘mesenchymal stem cells’, a change to ‘mesenchymal stromal cells’ was proposed by the International Society for Cellular Therapy in 2006.1
The change in nomenclature originates from two important factors:
- Methods used to isolate mesenchymal stem cells yield a heterogeneous population of cells with only a fraction of these cells demonstrating multipotency.
- The absence of direct evidence that mesenchymal stem cells can self-renew and differentiate in vivo.
Use of Mesenchymal Stem and Stromal Cell Terminology
Data supporting MSC self-renewal and multipotency have been obtained using in vitro conditions, which does not adequately reflect the in vivo environment. The lack of in vivo data has led some researchers to question the validity of the term ‘mesenchymal stem cell’ providing further support for the use of ‘mesenchymal stromal cells’ to describe MSCs.2 While ‘mesenchymal stromal cells’ may be the more scientifically accurate term for MSCs, the two terms are often used interchangeably in the literature. R&D Systems recognizes the use of both mesenchymal stem cells and mesenchymal stromal cells and uses ‘MSC’ to indicate mesenchymal stem/stromal cells to account for both designations.
Definitions of Mesenchymal Stromal Cells and Mesenchymal Stem Cells
- Mesenchymal Stromal Cells – A heterogeneous population of cultured cells with similar characteristics such as the ability to adhere to plastic and the expression of specific marker proteins.
- Mesenchymal Stem Cells – A subpopulation of mesenchymal stromal cells that have the capacity to self-renew and differentiate into mesodermal lineages when cultured in vitro. The capacity to self-renew and differentiate in vivo has yet to be clearly demonstrated for mesenchymal stem cells.
- Dominici, M. et al. (2006) Cytotherapy 8:315.
- Keating, A. (2012) Cell Stem Cell 10:709.
The term 'mesenchymal stem cells' (MSCs) is most commonly used to describe multipotent self-renewing cells that can be differentiated in vitro to generate adipocytes, chondrocytes, and osteoblasts. However, because these biological properties and hierarchical relationships remain to be clearly demonstrated in vivo, the term 'multipotent mesenchymal stromal cells' is often used to distinguish cultured cells from their in vivo precursors. Originally discovered in mouse bone marrow, multipotent mesenchymal stromal cells cultured from a variety of species and tissue types, have been shown to differentiate into progeny of additional lineages including, cardiomyocytes, endothelial cells, hepatocytes, and neural cells. Again, the physiological relevance of these findings remains to be determined.
Refer to the product datasheet for complete product details.
Briefly, MSCs are cultured in serum-free expansion media using the following protocol:
- Plate MSCs on Fibronectin-coated culture dishes
- Culture MSCs to 80-90% confluency in serum-free expansion media
- Passage MSCs using fresh serum-free expansion media
Reagents supplied in the StemXVivo® Serum-Free Mesenchymal Stem Cell Expansion Media (Catalog # CCM014):
- 250 mL of serum-free MSC expansion media
- Penicillin-Streptomycin (100X)
- Human Fibronectin (R&D Systems, Catalog # 1918-FN-02M)
- Trypsin-EDTA (10X)
- Phosphate-Buffered Saline (PBS)
- Human MSCs
- 75 cm2 tissue culture flasks
- 15 mL centrifuge tubes
- Pipettes and pipette tips
- Serological pipettes
- 37 °C and 5% CO2 incubator
- Inverted microscope
- 2 °C to 8 °C refrigerator
- 37 °C water bath
Culturing Mesenchymal Stem Cells
Coat plates with 5 µg/mL Human Fibronectin.
Add 4.5-5.0 x 105 MSCs resuspended in 20 mL of the pre-warmed StemXVivo® Serum-Free MSC Expansion Media to a T75 flask.
Replace the medium every 2-3 days with fresh StemXVivo® Serum-Free MSC Expansion Media.
Culture cells to 80-90% confluency.
Subculturing Mesenchymal Stem Cells
Remove and discard the media from the T75 tissue culture flask(s) containing the MSCs.
Wash the cells with PBS.
Thawing of Cryopreserved Stem Cells
Add 3 mL of pre-warmed trypsin to the MSCs and incubate the flask at 37 °C.
Transfer the dissociated MSCs to a 15 mL conical tube and centrifuge at 400 x g for 5 minutes.
Resuspend the cell pellet in 5 mL of StemXVivo® Serum-Free MSC Expansion Media.
Perform a cell count..
Add 4.5-5.0 x 105 MSCs resuspended in 20 mL of pre-warmed StemXVivo® Serum-Free MSC Expansion Media into each Fibronectin-coated T75 flask.
Culture the MSCs to 80-90% confluency.
Citations for StemXVivo Serum-Free Human MSC Expansion Media
R&D Systems personnel manually curate a database that contains references using R&D Systems products. The data collected includes not only links to publications in PubMed, but also provides information about sample types, species, and experimental conditions.
Citations: Showing 1 - 2
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Serum-free media for the production of human mesenchymal stromal cells: a review.
Authors: Gottipamula S, Muttigi M, Kolkundkar U, Seetharam R
Cell Prolif, 2013;46(6):608-27. 2013
Diverse impact of xeno-free conditions on biological and regenerative properties of hUC-MSCs and their extracellular vesicles.
Authors: Bobis-Wozowicz S, Kmiotek K, Kania K, Karnas E, Labedz-Maslowska A, Sekula M, Kedracka-Krok S, Kolcz J, Boruczkowski D, Madeja Z, Zuba-Surma E
J Mol Med (Berl), 0;95(2):205-220. 0
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