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Surface Topography Enhances Differentiation of Mesenchymal Stem Cells Towards Osteogenic and Adipogenic Lineages

ABSTRACT: Surface topography impacts on cell growth and differentiation, but it is not trivial to generate homogeneous surface structures and to define the specific morphological parameters of relevance. In this study, we have compared gene expression profiles of mesenchymal stem cells (MSCs) on nanostructured groove/ridge surfaces. Patterns were generated in polyimide using multi beam laser interference. These structures affected cell size and orientation of human MSCs. Furthermore, the nano-patterns with a periodicity of 650 nm increased differentiation towards osteogenic and adipogenic lineages. However, in absence of differentiation media the surface structures did neither induce differentiation, nor lineage-specific gene expression changes – as assessed by genome wide gene expression profiles with Affymetrix microarray technology. Our results demonstrate that grooves and ridges at a periodicity of 650 nm enhance the propensity of MSCs to differentiate towards adipogenic and/or osteogenic lineages – but they do not directly govern lineage-specific gene expression changes.

ORGANISM(S): Homo sapiens

PROVIDER: GSE61113 | GEO | 2015/08/25

SECONDARY ACCESSION(S): PRJNA260273

REPOSITORIES: GEO

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Surface Topography Enhances Differentiation of Mesenchymal Stem Cells Towards Osteogenic and Adipogenic Lineages

Project description:Surface topography impacts on cell growth and differentiation, but it is not trivial to generate homogeneous surface structures and to define the specific morphological parameters of relevance. In this study, we have compared gene expression profiles of mesenchymal stem cells (MSCs) on nanostructured groove/ridge surfaces. Patterns were generated in polyimide using multi beam laser interference. These structures affected cell size and orientation of human MSCs. Furthermore, the nano-patterns with a periodicity of 650 nm increased differentiation towards osteogenic and adipogenic lineages. However, in absence of differentiation media the surface structures did neither induce differentiation, nor lineage-specific gene expression changes – as assessed by genome wide gene expression profiles with Affymetrix microarray technology. Our results demonstrate that grooves and ridges at a periodicity of 650 nm enhance the propensity of MSCs to differentiate towards adipogenic and/or osteogenic lineages – but they do not directly govern lineage-specific gene expression changes. 9 samples were hybridized to the GeneChip Human Gene 2.0 ST Array (Affymetrix). In comparison to the manuscript the donor IDs refer as follows: donor 1 = AT57; donor 2 = AT58; donor 3 = AT61.

2015-08-25 | E-GEOD-61113 | biostudies-arrayexpress

Surface topography enhances differentiation of mesenchymal stem cells towards osteogenic and adipogenic lineages

Project description:Surface topography impacts on cell growth and differentiation, but it is not trivial to generate defined surface structures and to assess the relevance of specific topographic parameters. In this study, we have systematically compared in vitro differentiation of mesenchymal stem cells (MSCs) on a variety of groove/ridge structures. Micro- and nano-patterns were generated in polyimide using reactive ion etching or multi beam laser interference, respectively. These structures affected cell spreading and orientation of human MSCs, which was also reflected in focal adhesions morphology and size. Time-lapse demonstrated directed migration parallel to the nano-patterns. Overall, surface patterns clearly enhanced differentiation of MSCs towards specific lineages: 15 um ridges increased adipogenic differentiation whereas 2 um ridges enhanced osteogenic differentiation. Notably, nano-patterns with a periodicity of 650 nm increased differentiation towards both osteogenic and adipogenic lineages. However, in absence of differentiation media surface structures did neither induce differentiation, nor lineage-specific gene expression changes. Furthermore, nanostructures did not affect the YAP/TAZ complex, which is activated by substrate stiffness. Our results provide further insight into how structuring of tailored biomaterials and implant interfaces - e.g. by multi beam laser interference in sub-micrometer scale - do not induce differentiation of MSCs per se, but support their directed differentiation.

2018-09-20 | E-MTAB-7177 | biostudies-arrayexpress

RNA-Seq Analysis Reveals Different Dynamics of Differentiation of Human Dermis- and Adipose-derived Stromal Stem Cells

Project description:Background: Tissue regeneration and recovery in the adult body depends on self-renewal and differentiation of stem and progenitor cells. Mesenchymal stem cells (MSCs) that have the ability to differentiate into various cell types, have been isolated from the stromal fraction of virtually all tissues. However, little is known about the true identity of MSCs. MSC populations exhibit great tissue-, location- and patient-specific variation in gene expression and are heterogeneous in cell composition. Methodology/Principal findings: Our aim was to analyze the dynamics of differentiation of two closely related stromal cell types, adipose tissue-derived MSCs and dermal fibroblasts (FBs) along adipogenic, osteogenic and chondrogenic lineages using multiplex RNA-seq technology. We found that undifferentiated donor-matched MSCs and FBs are distinct populations that stay different upon differentiation into adipocytes, osteoblasts and chondrocytes. The changes in lineage-specific gene expression occur early in differentiation and persist over time in both MSCs and FBs. Further, MSCs and FBs exhibit similar dynamics of adipogenic and osteogenic differentiation but different dynamics of chondrogenic differentiation. Conclusion: Our findings suggest that stromal stem cells including adipose-derived MSCs and dermal FBs exploit different molecular mechanisms of differentiation to reach a common cell fate. The early mechanisms of differentiation are lineage-specific and are similar for adipogenic and osteogenic differentiation but are distinct for chondrogenic differentiation between MSCs and FBs. A total of 91 samples were analyzed by multiplex RNA-seq. Samples represented replicates from two patients, two cell types and three differentiation protocols, as indicated by the sample annotation. 5 barcodes were unused, but the corresponding FASTQ files are included for completeness.

2012-06-27 | E-GEOD-37521 | biostudies-arrayexpress

RNA-Seq Analysis Reveals Different Dynamics of Differentiation of Human Dermis- and Adipose-derived Stromal Stem Cells

2012-06-28 | GSE37521 | GEO

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Project description:Surface topography enhances differentiation of mesenchymal stem cells towards osteogenic and adipogenic lineages

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Can half-marathon affect overall health? The yin-yang of sport

Project description:Physical activity improves overall health and counteracts metabolic pathologies. Adipose tissue and bone are important key targets of exercise; the prevalence of diseases associated with suboptimal physical activity levels has increased in recent times as a result of lifestyle changes. Mesenchymal stem cells (MSCs) differentiation in either osteogenic or adipogenic lineage is regulated by many factors. Particularly, the expression of master genes such as RUNX2 and PPARγ2 is essential for MSC commitment to osteogenic or adipogenic differentiation, respectively. Besides various positive effects on health, some authors have reported stressful outcomes as a consequence of endurance in physical activity. We looked for further clues about MSCs differentiation and serum proteins modulation studying the effects of half marathon in runners by means of gene expression analyses and a proteomic approach. Our results demonstrated an increase in osteogenic commitment and a reduction in adipogenic commitment of MSCs. In addition, for the first time we have analyzed the proteomic profile changes in runners after half-marathon activity in order to survey the related systemic adjustments. Interestingly, proteomic data showed the activation of both inflammatory response and detoxification process. Moreover, the involvement of pathways associated to immune response, lipid transport and coagulation, was elicited. Notably, positive and negative effects may be strictly linked.

2017-09-25 | PXD006704 | Pride

CD146 expression in mesenchymal stem cells is associated with vascular smooth muscle commitment

Project description:Bone-marrow mesenchymal stem cells (MSCs) are plastic adherent cells that can differentiate into various tissue lineages, including osteoblasts, adipocytes and chondrocytes. However, this progenitor property is not shared by all cells within the MSC population. In addition, MSCs vary in their proliferation capacities and expression of markers. Because of heterogeneity of CD146 expression in the MSC population, we compared CD146-/Low and CD146High cells under clonal and non-clonal (sorted MSCs) conditions to determine whether this expression is associated with specific functions. CD146-/Low and CD146High MSCs did not differ in colony-forming unit-fibroblast number, osteogenic and adipogenic differentiation or in vitro hematopoietic supportive activity. However, CD146-/Low clones proliferated slightly but significantly faster than did CD146High clones. In addition, a strong expression of CD146 molecule was associated with a commitment towards a vascular smooth muscle cell lineage with upregulation of calponin-1 expression. Thus, within a bone-marrow MSC population, certain subpopulations characterized by high expression of CD146, are committed toward a vascular smooth muscle cell lineage. Clonal MSC were selected on the basis of CD146 level at their surface (CD146Low and CD146 High) and non-clonal MSC were compared from 4 different donors.

2013-07-04 | E-GEOD-48540 | biostudies-arrayexpress

Homo sapiens

Project description:Surface Topography Enhances Differentiation of Mesenchymal Stem Cells Towards Osteogenic and Adipogenic Lineages

| PRJNA260273 | ENA

Mapk7 regulates bone-fat balance by targeting Lrp6/β-catenin axis

Project description:The lineage commitment and differentiation of mesenchymal stem cells (MSCs) play a crucial role in the maintenance of bone stability. MAPK7 (Mitogen-activated protein kinase 7), a member of the MAPK family, controls cell proliferation, differentiation, and survival. However, the specific role of Mapk7 in regulating the osteogenic and adipogenic differentiation of MSCs remains to be determined. In this study, depletion of Mapk7 in MSCs (Prx1-Cre) resulted in severe low bone mass and accumulation of bone marrow fat in mice exhibiting osteoporosis. In vitro, overexpression of Mapk7 in MSCs induced an enhancement of osteogenesis in MSCs, while adipogenesis was attenuated. Mechanistically, MAPK7 availed to influence the activity of WNT/β-catenin signaling by modulating the phosphorylation of LRP6 ser1490, which ultimately impacted the osteogenic-adipogenic differentiation fate of MSCs for the first time. This is of great clinical and scientific significance for understanding the biological function of Mapk7 gene and developing new therapeutic targets for OP. Our study for the first time demonstrates that Mapk7/Lrp6/β-catenin signal axis plays a critical role in regulating the osteogenic and adipogenic differentiation of MSCs. It also suggests that modulating the function of Mapk7 may benefit the treatment of MSCs differentiation inbalance related bone diseases such as osteoporosis.

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