title: Study of differential effects of TGF-beta3/BMP2 on chondrogenesis in MSC cells by gene microarray data analysis.
abstract: In order to explore the differential effects of TGF-beta3 and BMP2 on chondrogenesis in mesenchymal stem cells (MSCs), the gene expression profiles of MSC treated with TGF-beta3 and BMP2 were subjected to systematic analysis on the gene and functional level. The gene expression profiles of MSCs (downloaded from Gene Expression Omnibus database) in the early and later stages, induced with TGF-beta2 and BMP2, were analyzed using packages within R software and the differentially expressed genes (DEGs) were screened. The DEGs both in the two experimental groups were subjected to Gene Ontology and pathway enrichment analysis. The protein-protein interaction (PPI) networks of the DEGs were constructed using cytoscape software. Among the DEGs, 1,194 genes were up-regulated and 580 genes were down-regulated. The up-regulated genes were mainly enriched in the TGF-beta and cell cycle signaling pathways and down-regulated genes were mainly enriched in the insulin-mediated signal pathway, metabolic pathway of fructose and mannose, and glycolysis/gluconeogenesis pathway. Based on the PPI network analysis, the genes of KIAA0101, NEDD4, and TINF2 were confirmed to be important on chondrogenesis. The analysis of DEGs both in TGF-beta3 and BMP2 treated MSCs indicates that the genes are mainly involved in the cell cycle and intracellular signaling pathways. Also the similar gene expression profile can be achieved by transcription factors or microRNAs (miR-199a-5p and miR-31-5p) based on our prediction, which can provide a new approach for the treatment of cartilage injury.
authors.affiliation: School of Pharmacy, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China.
authors.forename: Yunxia
authors.initials: Y
authors.lastname: Sang
authors.forename: Weidong
authors.initials: W
authors.lastname: Zang
authors.forename: Yan
authors.initials: Y
authors.lastname: Yan
authors.forename: Yong
authors.initials: Y
authors.lastname: Liu
authors.forename: Qiang
authors.initials: Q
authors.lastname: Fu
authors.forename: Kang
authors.initials: K
authors.lastname: Wang
authors.forename: Yantian
authors.initials: Y
authors.lastname: Chen
authors.forename: Nianmin
authors.initials: N
authors.lastname: Qi
mesh_terms: D055396:Bone Morphogenetic Protein 2 / Q000494:pharmacology*; D020219:Chondrogenesis / Q000187:drug effects* / Q000235:genetics; D020869:Gene Expression Profiling; D005786:Gene Expression Regulation / Q000187:drug effects; D063990:Gene Ontology; D053263:Gene Regulatory Networks / Q000187:drug effects; D006801:Humans; D059630:Mesenchymal Stem Cells / Q000187:drug effects / Q000378:metabolism*; D035683:MicroRNAs / Q000235:genetics / Q000378:metabolism; D020411:Oligonucleotide Array Sequence Analysis; D015398:Signal Transduction / Q000187:drug effects / Q000235:genetics; D054852:Small Molecule Libraries / Q000494:pharmacology; D013223:Statistics as Topic; D053782:Transforming Growth Factor beta3 / Q000494:pharmacology*
chemical_list: D055396:Bone Morphogenetic Protein 2; D035683:MicroRNAs; D054852:Small Molecule Libraries; D053782:Transforming Growth Factor beta3