Phenotypic and functional comparison of optimum culture conditions for upscaling of bone marrow-derived mesenchymal stem cells

2009 ◽  
Vol 3 (3) ◽  
pp. 163-174 ◽  
Author(s):  
Rakhi Pal ◽  
Madhuri Hanwate ◽  
Majahar Jan ◽  
Satish Totey
2016 ◽  
Vol 2016 ◽  
pp. 1-12 ◽  
Author(s):  
Ruifeng Liu ◽  
Wenjuan Chang ◽  
Hong Wei ◽  
Kaiming Zhang

Mesenchymal stem cells (MSCs) exhibit high proliferation and self-renewal capabilities and are critical for tissue repair and regeneration during ontogenesis. They also play a role in immunomodulation. MSCs can be isolated from a variety of tissues and have many potential applications in the clinical setting. However, MSCs of different origins may possess different biological characteristics. In this study, we performed a comprehensive comparison of MSCs isolated from bone marrow and skin (BMMSCs and SMSCs, resp.), including analysis of the skin sampling area, separation method, culture conditions, primary and passage culture times, cell surface markers, multipotency, cytokine secretion, gene expression, and fibroblast-like features. The results showed that the MSCs from both sources had similar cell morphologies, surface markers, and differentiation capacities. However, the two cell types exhibited major differences in growth characteristics; the primary culture time of BMMSCs was significantly shorter than that of SMSCs, whereas the growth rate of BMMSCs was lower than that of SMSCs after passaging. Moreover, differences in gene expression and cytokine secretion profiles were observed. For example, secretion of proliferative cytokines was significantly higher for SMSCs than for BMMSCs. Our findings provide insights into the different biological functions of both cell types.


PeerJ ◽  
2016 ◽  
Vol 4 ◽  
pp. e1536 ◽  
Author(s):  
Norlaily Mohd Ali ◽  
Lily Boo ◽  
Swee Keong Yeap ◽  
Huynh Ky ◽  
Dilan A. Satharasinghe ◽  
...  

Decline in the therapeutic potential of bone marrow-derived mesenchymal stem cells (MSC) is often seen with older donors as compared to young. Although hypoxia is known as an approach to improve the therapeutic potential of MSC in term of cell proliferation and differentiation capacity, its effects on MSC from aged donors have not been well studied. To evaluate the influence of hypoxia on different age groups, MSC from young (<30 years) and aged (>60 years) donors were expanded under hypoxic (5% O2) and normal (20% O2) culture conditions. MSC from old donors exhibited a reduction in proliferation rate and differentiation potential together with the accumulation of senescence features compared to that of young donors. However, MSC cultured under hypoxic condition showed enhanced self-renewing and proliferation capacity in both age groups as compared to normal condition. Bioinformatic analysis of the gene ontology (GO) and KEGG pathway under hypoxic culture condition identified hypoxia-inducible miRNAs that were found to target transcriptional activity leading to enhanced cell proliferation, migration as well as decrease in growth arrest and apoptosis through the activation of multiple signaling pathways. Overall, differentially expressed miRNA provided additional information to describe the biological changes of young and aged MSCs expansion under hypoxic culture condition at the molecular level. Based on our findings, the therapeutic potential hierarchy of MSC according to donor’s age group and culture conditions can be categorized in the following order: young (hypoxia) > young (normoxia) > old aged (hypoxia) > old aged (normoxia).


2008 ◽  
Vol 20 (1) ◽  
pp. 226
Author(s):  
H. J. Song ◽  
E. J. Kang ◽  
B. G. Jeon ◽  
G. J. Rho

Mesenchymal stem cells (MSCs) isolated from bone marrow have unique self-renewal capability for multilineage differentiation and show promise in the field of medicine for cell therapies and tissue engineering. In the present study, we examined the maintenance of cell populations and the differentiation ability of canine MSCs into mesodermal lineages, oesteoblasts and adipocytes, under different culture conditions. MSCs isolated from bone marrow by Ficoll gradient treatment were cultured in (1) ADMEM supplemented with 10% fetal bovine serum (FBS) (basic medium), (2) basic medium supplemented with 10 ng mL–1 basic fibroblast growth factor (bFGF), (3) basic medium supplemented with 1000 IU mL–1 human leukemia inhibitory factor (hLIF), and (4) basic medium supplemented with 10 ng mL–1 bFGF and 1000 IU LIF. In Experiment 1, under a phasecontrast microscope (40�), morphological changes of MSC populations, including the appearance of more spherical shapes and extending processes arranged into network-like structures, were observed in all media with cytokines added, but not in basic medium. In Experiment 2, MSCs cultured under different conditions at 3–5 passages were induced into osteogenic and adipogenic lineages, and their characteristics were evaluated based on the formation of mineral nodules by alkaline phosphatase-positive cells, von Kossa and alizarin red staining of osteoblasts, and oil red O staining of lipid vacuoles following the protocol described earlier (Jin et al. 2007 Int. J. Dev. Biol. 51, 85–90). Only MSCs cultured in basic medium were successfully differentiated into osteoblasts and adipocytes. In conclusion, this study indicates that supplementation of culture media with cytokines might have a negative effect on the pluripotency maintenance of canine MSCs. Further studies are required to evaluate more characteristics of gene expression in canine MSCs.


Blood ◽  
2008 ◽  
Vol 112 (11) ◽  
pp. 2066-2066
Author(s):  
Céline Pebrel-Richard ◽  
Richard Veyrat Masson ◽  
Frédérique Dubois-Galopin ◽  
Jean-Jacques Guérin ◽  
Laurent Guillouard ◽  
...  

Abstract In B-cell chronic lymphocytic leukemia (B-CLL), CD5+CD19+ malignant cells home into the bone marrow (BM) and circulate in the blood. While CLL tumor cells are not susceptible to apoptosis in vivo, they die rapidly in vitro in the absence of specialized non-hematopoietic feeder cells, such as mesenchymal stem cells (MSC). Recent observations have suggested that there is a functional relationship between B cell clone and the stroma. We have thus compared BM-MSC obtained from B-CLL patients and healthy subjects. We first evaluated the influence of in vitro culture conditions on the number of BM-derived CFU-F and the proliferation of MSC and, in parallel, we quantified in unmanipulated normal and malignant BM samples the CD45negCD14negCD73pos cell subset that was previously shown to contain CFU-F (Veyrat-Masson et al., BJH, 2007). Changes in the level of 42 cytokines/chemokines, were then evaluated in MSC-conditioned media (4 CLL vs 4 normal BM-MSCs) using protein-array (RayBio Human Cytokine Antibody Array IIITM, Tebu-bio SA,). In addition, total RNA was extracted (Rneasy MiniKit, Qiagen,) from 9 expanded MSC at passage 1 (P1) in the presence of bFGF (5 untreated B-CLL BM-MSC: 2 Binet stage A, 2 stage B and 1 stage C; 4 normal BM-MSC) and then reverse transcribed (High Capacity cDNA RT Kit, Applied BioSystems). Quantitative PCR reactions, using dedicated microfluid cards screening 384 selected genes, were then performed (TLDAs, Applied Biosystem Courtaboeuf, France). The expression of glyceraldehyde 3-phosphate dehydrogenase (GAPDH) was used to normalize gene expression level. Despite a 16-fold increase in total cell numbers tested, we found that most BM-MSC cultures from B-CLL patients failed under standard culture conditions (IMDM/10%FCS), in contrast with our experience with normal BM (69 % n = 13 vs &lt;0.05 % n = 205 ; p &lt;0.005). In agreement, CD45negCD14negCD73pos cells were under the threshold of detection in most of B-CLL BM samples (11/16). In productive cultures, we found more CFU-F from B-CLL BM formed by large, polygonal mesenchymal cells (58.1 ± 12.7 % vs 11.4 ± 3.6 % ; p = 0.008 ). These cells proliferated poorly and in most cases could not be further amplified. The use of normal human AB serum, CLL serum, or bFGF enabled us to detect CFU-F in most malignant samples and to amplify mesenchymal cells (19/21 (90 %)), but their frequency remained lower than in control BM. By using protein-array, we observed that MSC tended to release lower amounts of IL-6, IL-7, and MCP-1 and sometimes higher amounts of IL-8. The concentrations of these cytokines/chemokines in the MSC culture supernatant are under validation by ELISA. Finally, among the 384 genes tested by RT-qPCR, we identified 16 statistically up-regulated genes and 41 down-regulated genes (Mann Whitney U test, P&lt; .05; and SAM permutation analysis, FDR&lt;5%). Up-regulated genes included several growth and angiogenic factors as well as key players of the stroma - tumor cell crosstalk. Most down-regulated genes were involved in differentiation pathways. Conclusions: These results show that the BM-MSC from B-CLL patients were quantitatively and functionally altered and are dependent for their in vitro growth on circulating soluble factors or on growth factors like bFGF. Interestingly, from this small series, we observed 57 differentially expressed genes which could be involved in the B-CLL specific stromal cell alterations previously reported (dysregulation of cytokine secretion, angiogenesis, host-tumor relationships). These findings suggest the possible permissive role of MSC on B-cell clone progression and raise the question as to whether we are dealing with selection of a mesenchymal subset or with alteration of mesenchymal cells induced by malignant B-cells


2015 ◽  
Author(s):  
Norlaily Mohd Ali ◽  
Lily Boo ◽  
Swee Keong Yeap ◽  
Huynh Ky ◽  
Dilan A Satharasinghe ◽  
...  

Decline in the therapeutic potential of bone marrow-derived mesenchymal stem cells (MSC) is often seen with older donors as compared to young. Although hypoxia is known as an approach to improve the therapeutic potential of MSC in term of cell proliferation and differentiation capacity, its effects on MSC from aged donors have not been well studied. To evaluate the influence of hypoxia on different age groups, MSC from young (<30 years) and aged (>60 years) donors were expanded under hypoxic (5% O2) and normal (20% O2) culture conditions. MSC from old donors exhibited a reduction in proliferation rate and differentiation potential together with the accumulation of senescence features compared to that of young donors. However, MSC cultured under hypoxic condition showed enhanced self-renewing and proliferation capacity in both age groups as compared to normal condition. Bioinformatic analysis of the gene ontology (GO) and KEGG pathway under hypoxic culture condition identified hypoxia-inducible miRNAs that were found to target transcriptional activity leading to enhanced cell proliferation, migration as well as decrease in growth arrest and apoptosis through the activation of multiple signaling pathways. Overall, differentially expressed miRNA provided additional information to describe the biological changes of young and aged MSCs expansion under hypoxic culture condition at the molecular level. Based on our findings, the therapeutic potential hierarchy of MSC according to donor’s age group and culture conditions can be categorized in the following order: young (hypoxia)> young (normoxia) > old aged (hypoxia) > old aged (normoxia).


2015 ◽  
Author(s):  
Norlaily Mohd Ali ◽  
Lily Boo ◽  
Swee Keong Yeap ◽  
Huynh Ky ◽  
Dilan A Satharasinghe ◽  
...  

Decline in the therapeutic potential of bone marrow-derived mesenchymal stem cells (MSC) is often seen with older donors as compared to young. Although hypoxia is known as an approach to improve the therapeutic potential of MSC in term of cell proliferation and differentiation capacity, its effects on MSC from aged donors have not been well studied. To evaluate the influence of hypoxia on different age groups, MSC from young (<30 years) and aged (>60 years) donors were expanded under hypoxic (5% O2) and normal (20% O2) culture conditions. MSC from old donors exhibited a reduction in proliferation rate and differentiation potential together with the accumulation of senescence features compared to that of young donors. However, MSC cultured under hypoxic condition showed enhanced self-renewing and proliferation capacity in both age groups as compared to normal condition. Bioinformatic analysis of the gene ontology (GO) and KEGG pathway under hypoxic culture condition identified hypoxia-inducible miRNAs that were found to target transcriptional activity leading to enhanced cell proliferation, migration as well as decrease in growth arrest and apoptosis through the activation of multiple signaling pathways. Overall, differentially expressed miRNA provided additional information to describe the biological changes of young and aged MSCs expansion under hypoxic culture condition at the molecular level. Based on our findings, the therapeutic potential hierarchy of MSC according to donor’s age group and culture conditions can be categorized in the following order: young (hypoxia)> young (normoxia) > old aged (hypoxia) > old aged (normoxia).


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