Biomaterial Database

Effect of TGF beta1, BMP-2 and hydraulic pressure on chondrogenic differentiation of bovine bone marrow mesenchymal stromal cells. 2009

Stephan Zeiter, and Patrick Lezuo, and Keita Ito

AO Research Institute, Davos, Switzerland. stephan.zeiter@aofoundation.org

Bioactive factors, such as TGF beta and BMP-2, as well as mechanical factors i.e. compressive loading and hydraulic pressure, have been shown to induce and/or modulate chondrogenesis of bone marrow derived mesenchymal stromal cells (BMSCs). Since these factors are intracellularly transduced through different mechanisms, it is hypothesized that TGF beta, BMP-2 and hydraulic pressure may act synergistically on chondrogenic differentiation of BMSCs. Aggregates of bovine BMSC were cultured in the presence of 10 ng/ml TGF beta1, 50 ng/ml BMP-2 or both. Half of the samples were loaded for 4 hours per day with 0.5-3 MPa cyclic hydraulic pressure at 1 Hz. After 14 days of culture/loading, gene expression of chondrogenic genes was assessed. DNA as well as glycosaminoglycan (GAG) content of the pellets were analysed. Neither pressure nor BMP-2 had an influence on GAG/DNA content. However, cells responded to the presence of TGF beta1 with an up-regulation of chondrogenic genes and GAG/DNA of the aggregates increased compared to controls demonstrating the cells ability to respond to external stimuli. The used concentrations of BMP-2 and parameters for pressure were neither able to induce nor modulate chondrogenesis of bovine BMSCs and thus no synergistic effects were observed.

UI	MeSH Term	Description	Entries
D002417	Cattle	Domesticated bovine animals of the genus Bos, usually kept on a farm or ranch and used for the production of meat or dairy products or for heavy labor.	Beef Cow,Bos grunniens,Bos indicus,Bos indicus Cattle,Bos taurus,Cow,Cow, Domestic,Dairy Cow,Holstein Cow,Indicine Cattle,Taurine Cattle,Taurus Cattle,Yak,Zebu,Beef Cows,Bos indicus Cattles,Cattle, Bos indicus,Cattle, Indicine,Cattle, Taurine,Cattle, Taurus,Cattles, Bos indicus,Cattles, Indicine,Cattles, Taurine,Cattles, Taurus,Cow, Beef,Cow, Dairy,Cow, Holstein,Cows,Dairy Cows,Domestic Cow,Domestic Cows,Indicine Cattles,Taurine Cattles,Taurus Cattles,Yaks,Zebus
D002454	Cell Differentiation	Progressive restriction of the developmental potential and increasing specialization of function that leads to the formation of specialized cells, tissues, and organs.	Differentiation, Cell,Cell Differentiations,Differentiations, Cell
D002478	Cells, Cultured	Cells propagated in vitro in special media conducive to their growth. Cultured cells are used to study developmental, morphologic, metabolic, physiologic, and genetic processes, among others.	Cultured Cells,Cell, Cultured,Cultured Cell
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia
D013314	Stress, Mechanical	A purely physical condition which exists within any material because of strain or deformation by external forces or by non-uniform thermal expansion; expressed quantitatively in units of force per unit area.	Mechanical Stress,Mechanical Stresses,Stresses, Mechanical
D053773	Transforming Growth Factor beta1	A subtype of transforming growth factor beta that is synthesized by a wide variety of cells. It is synthesized as a precursor molecule that is cleaved to form mature TGF-beta 1 and TGF-beta1 latency-associated peptide. The association of the cleavage products results in the formation a latent protein which must be activated to bind its receptor. Defects in the gene that encodes TGF-beta1 are the cause of CAMURATI-ENGELMANN SYNDROME.	TGF-beta1,Transforming Growth Factor-beta1,TGF-beta-1,TGF-beta1 Latency-Associated Protein,TGF-beta1LAP,Transforming Growth Factor beta 1 Latency Associated Peptide,Transforming Growth Factor beta I,Latency-Associated Protein, TGF-beta1,TGF beta 1,TGF beta1 Latency Associated Protein,TGF beta1LAP
D055396	Bone Morphogenetic Protein 2	A potent osteoinductive protein that plays a critical role in the differentiation of osteoprogenitor cells into OSTEOBLASTS.
D059630	Mesenchymal Stem Cells	Mesenchymal stem cells, also referred to as multipotent stromal cells or mesenchymal stromal cells are multipotent, non-hematopoietic adult stem cells that are present in multiple tissues, including BONE MARROW; ADIPOSE TISSUE; and WHARTON JELLY. Mesenchymal stem cells can differentiate into mesodermal lineages, such as adipocytic, osteocytic and chondrocytic.	Adipose Tissue-Derived Mesenchymal Stem Cell,Adipose Tissue-Derived Mesenchymal Stromal Cell,Adipose-Derived Mesenchymal Stem Cell,Bone Marrow Mesenchymal Stem Cell,Mesenchymal Stromal Cell,Mesenchymal Stromal Cells,Multipotent Bone Marrow Stromal Cell,Multipotent Mesenchymal Stromal Cell,Adipose Tissue-Derived Mesenchymal Stem Cells,Adipose Tissue-Derived Mesenchymal Stromal Cells,Adipose-Derived Mesenchymal Stem Cells,Adipose-Derived Mesenchymal Stromal Cells,Bone Marrow Mesenchymal Stem Cells,Bone Marrow Stromal Cell,Bone Marrow Stromal Cells,Bone Marrow Stromal Cells, Multipotent,Bone Marrow Stromal Stem Cells,Mesenchymal Progenitor Cell,Mesenchymal Progenitor Cells,Mesenchymal Stem Cell,Mesenchymal Stem Cells, Adipose-Derived,Mesenchymal Stromal Cells, Multipotent,Multipotent Bone Marrow Stromal Cells,Multipotent Mesenchymal Stromal Cells,Stem Cells, Mesenchymal,Wharton Jelly Cells,Wharton's Jelly Cells,Adipose Derived Mesenchymal Stem Cell,Adipose Derived Mesenchymal Stem Cells,Adipose Derived Mesenchymal Stromal Cells,Adipose Tissue Derived Mesenchymal Stem Cell,Adipose Tissue Derived Mesenchymal Stem Cells,Adipose Tissue Derived Mesenchymal Stromal Cell,Adipose Tissue Derived Mesenchymal Stromal Cells,Mesenchymal Stem Cells, Adipose Derived,Progenitor Cell, Mesenchymal,Progenitor Cells, Mesenchymal,Stem Cell, Mesenchymal,Stromal Cell, Mesenchymal,Stromal Cells, Mesenchymal,Wharton's Jelly Cell,Whartons Jelly Cells
D018709	Statistics, Nonparametric	A class of statistical methods applicable to a large set of probability distributions used to test for correlation, location, independence, etc. In most nonparametric statistical tests, the original scores or observations are replaced by another variable containing less information. An important class of nonparametric tests employs the ordinal properties of the data. Another class of tests uses information about whether an observation is above or below some fixed value such as the median, and a third class is based on the frequency of the occurrence of runs in the data. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed, p1284; Corsini, Concise Encyclopedia of Psychology, 1987, p764-5)	Kolmogorov-Smirnov Test,Kruskal-Wallis H Statistic,Mann-Whitney U Test,Rank-Sum Tests,Spearman Rank Correlation Coefficient,Wilcox Test,Wilcoxon Rank Test,Non-Parametric Statistics,Nonparametric Statistics,Statistics, Non-Parametric,Kolmogorov Smirnov Test,Mann Whitney U Test,Non Parametric Statistics,Rank Sum Tests,Rank Test, Wilcoxon,Rank-Sum Test,Statistics, Non Parametric,Test, Kolmogorov-Smirnov,Test, Mann-Whitney U,Test, Rank-Sum,Test, Wilcox,Test, Wilcoxon Rank,Tests, Rank-Sum,U Test, Mann-Whitney
D020219	Chondrogenesis	The formation of cartilage. This process is directed by CHONDROCYTES which continually divide and lay down matrix during development. It is sometimes a precursor to OSTEOGENESIS.