Microarray Analyses of Gene Expression during Chondrocyte Differentiation Identifies Novel Regulators of Hypertrophy

@article{citeulike:2219164, abstract = {Ordered chondrocyte differentiation and maturation is required for normal skeletal development, but the intracellular pathways regulating this process remain largely unclear. We used Affymetrix microarrays to examine temporal gene expression patterns during chondrogenic differentiation in a mouse micromass culture system. Robust normalization of the data identified 3300 differentially expressed probe sets, which corresponds to 1772, 481, and 249 probe sets exhibiting minimum 2-, 5-, and 10-fold changes over the time period, respectively. GeneOntology annotations for molecular function show changes in the expression of molecules involved in transcriptional regulation and signal transduction among others. The expression of identified markers was confirmed by RT-PCR, and cluster analysis revealed groups of coexpressed transcripts. One gene that was up-regulated at later stages of chondrocyte differentiation was Rgs2. Overexpression of Rgs2 in the chondrogenic cell line ATDC5 resulted in accelerated hypertrophic differentiation, thus providing functional validation of microarray data. Collectively, these analyses provide novel information on the temporal expression of molecules regulating endochondral bone development. 10.1091/mbc.E05-01-0084}, author = {James, Claudine G. and Appleton and Ulici, Veronica and Underhill, Michael T. and Beier, Frank }, citeulike-article-id = {2219164}, doi = {10.1091/mbc.E05-01-0084}, journal = {Mol. Biol. Cell}, keywords = {chondrocyte, microarray}, month = {November}, number = {11}, pages = {5316--5333}, posted-at = {2008-01-11 14:44:24}, priority = {4}, title = {Microarray Analyses of Gene Expression during Chondrocyte Differentiation Identifies Novel Regulators of Hypertrophy}, url = {http://dx.doi.org/10.1091/mbc.E05-01-0084}, volume = {16}, year = {2005} }

TY - JOUR ID - citeulike:2219164 L3 - citeulike-article-id:2219164 TI - Microarray Analyses of Gene Expression during Chondrocyte Differentiation Identifies Novel Regulators of Hypertrophy JF - Mol. Biol. Cell VL - 16 IS - 11 SP - 5316 EP - 5333 N2 - Ordered chondrocyte differentiation and maturation is required for normal skeletal development, but the intracellular pathways regulating this process remain largely unclear. We used Affymetrix microarrays to examine temporal gene expression patterns during chondrogenic differentiation in a mouse micromass culture system. Robust normalization of the data identified 3300 differentially expressed probe sets, which corresponds to 1772, 481, and 249 probe sets exhibiting minimum 2-, 5-, and 10-fold changes over the time period, respectively. GeneOntology annotations for molecular function show changes in the expression of molecules involved in transcriptional regulation and signal transduction among others. The expression of identified markers was confirmed by RT-PCR, and cluster analysis revealed groups of coexpressed transcripts. One gene that was up-regulated at later stages of chondrocyte differentiation was Rgs2. Overexpression of Rgs2 in the chondrogenic cell line ATDC5 resulted in accelerated hypertrophic differentiation, thus providing functional validation of microarray data. Collectively, these analyses provide novel information on the temporal expression of molecules regulating endochondral bone development. 10.1091/mbc.E05-01-0084 KW - chondrocyte KW - microarray AU - James, Claudine AU - Appleton AU - Ulici, Veronica AU - Underhill, Michael AU - Beier, Frank PY - 2005/11/01/ UR - http://dx.doi.org/10.1091/mbc.E05-01-0084 ER -