Human Mesenchymal Stem Cells - Whartons Jelly (HMSC-WJ)
General information
Description | Human Mesenchymal Stem Cells derived from Wharton's Jelly (HMSC-WJ) represent a unique and versatile subset of mesenchymal stromal cells (MSCs). These cells are isolated from the gelatinous substance within the umbilical cord, offering a more primitive source of MSCs compared to those derived from adult tissues like bone marrow or adipose tissue. This primitive nature contributes to their higher proliferation rates, lower immunogenicity, and enhanced differentiation potential. Notably, HMSC-WJ can differentiate into a wide variety of cell types, including adipocytes, osteoblasts, and chondrocytes, under specific in vitro conditions, making them highly valuable for research into regenerative medicine, tissue engineering, and cellular therapies. One of the key differentiators of HMSC-WJ from other MSCs is their non-invasive and ethically favorable source, as the umbilical cord is typically discarded after birth. This eliminates the ethical concerns and donor morbidity associated with harvesting MSCs from bone marrow or adipose tissue. Furthermore, HMSC-WJ demonstrate superior immunomodulatory properties and a lower risk of transformation compared to MSCs from other sources, making them an attractive option for both in vitro studies and potential therapeutic applications. The cultured HMSC-WJ are cryopreserved at early passages using a specific cryomedium to ensure high viability and functionality upon thawing. Each cryovial contains a minimum of 1 x 10^6 cells, with viability levels consistently ranging between 92% to 95% as determined by the Trypan Blue dye exclusion test. These cells are collected from healthy donors, all of whom have provided informed consent for the use of their cell material. Rigorous quality control measures are applied to each batch of HMSC-WJ, ensuring that they meet strict criteria for identification, purity, potency, and viability, thereby guaranteeing their appropriateness for research purposes. |
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Organism | Human |
Tissue | Umbilical Cord - Whartons Jelly |
Characteristics
Growth properties | Adherent |
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Identifiers / Biosafety / Citation
Citation | Human Mesenchymal Stem Cells, Whartons Jelly (HMSC-WJ) (Cytion catalog number 300685) |
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Biosafety level | 1 |
Expression / Mutation
Handling
Culture Medium | Alpha MEM, w: 2.0 mM stable Glutamine, w/o: Ribonucleosides, w/o: Deoxyribonucleosides, w: 1.0 mM Sodium pyruvate, w: 2.2g/L NaHCO3 |
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Medium supplements | Supplement the medium with 10% FBS, 2 ng/mL bFGF |
Passaging solution | Accutase |
Subculturing | Remove the old medium from the adherent cells and wash them with PBS that lacks calcium and magnesium. For T25 flasks, use 3-5 ml of PBS, and for T75 flasks, use 5-10 ml. Then, cover the cells completely with Accutase, using 1-2 ml for T25 flasks and 2.5 ml for T75 flasks. Let the cells incubate at room temperature for 8-10 minutes to detach them. After incubation, gently mix the cells with 10 ml of medium to resuspend them, then centrifuge at 300xg for 3 minutes. Discard the supernatant, resuspend the cells in fresh medium, and transfer them into new flasks that already contain fresh medium. |
Freeze medium | CM-1 (Cytion catalog number 800100) |
Handling of cryopreserved cultures |
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Quality control / Genetic profile / HLA
Sterility | Mycoplasma contamination is excluded using both PCR-based assays and luminescence-based mycoplasma detection methods. To ensure there is no bacterial, fungal, or yeast contamination, cell cultures are subjected to daily visual inspections. |
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Required products
- A Gentle Alternative to Trypsin
Accutase is a cell detachment solution that is revolutionizing the cell culture industry. It is a mix of proteolytic and collagenolytic enzymes that mimics the action of trypsin and collagenase. Unlike trypsin, Accutase does not contain any mammalian or bacterial components and is much gentler on cells, making it an ideal solution for the routine detachment of cells from standard tissue culture plasticware and adhesion coated plasticware. In this blog post, we will explore the benefits and uses of Accutase and how it is changing the game in cell culture.
Advantages of Accutase
Accutase has several advantages over traditional trypsin solutions. Firstly, it can be used whenever gentle and efficient detachment of any adherent cell line is needed, making it a direct replacement for trypsin. Secondly, Accutase works extremely well on embryonic and neuronal stem cells, and it has been shown to maintain the viability of these cells after passaging. Thirdly, Accutase preserves most epitopes for subsequent flow cytometry analysis, making it ideal for cell surface marker analysis.
Additionally, Accutase does not need to be neutralized when passaging adherent cells. The addition of more media after the cells are split dilutes Accutase so it is no longer able to detach cells. This eliminates the need for an inactivation step and saves time for cell culture technicians. Finally, Accutase does not need to be aliquoted, and a bottle is stable in the refrigerator for 2 months.
Applications of Accutase
Accutase is a direct replacement for trypsin solution and can be used for the passaging of cell lines. Additionally, Accutase performs well when detaching cells for the analysis of many cell surface markers using flow cytometry and for cell sorting. Other downstream applications of Accutase treatment include analysis of cell surface markers, virus growth assay, cell proliferation, tumor cell migration assays, routine cell passage, production scale-up (bioreactor), and flow cytometry.
Composition of Accutase
Accutase contains no mammalian or bacterial components and is a natural enzyme mixture with proteolytic and collagenolytic enzyme activity. It is formulated at a much lower concentration than trypsin and collagenase, making it less toxic and gentler, but just as effective.
Efficiency of Accutase
Accutase has been shown to be efficient in detaching primary and stem cells and maintaining high cell viability compared to animal origin enzymes such as trypsin. 100% of cells are recovered after 10 minutes, and there is no harm in leaving cells in Accutase for up to 45 minutes, thanks to autodigestion of Accutase.
In summary
In conclusion, Accutase is a powerful solution that is changing the game in cell culture. With its gentle nature, efficiency, and versatility, Accutase is the ideal alternative to trypsin. If you are looking for a reliable and efficient solution for cell detachment, Accutase is the solution for you.