Comparative analysis of osteogenic/chondrogenic differentiation potential in primary limb bud-derived and C3H10T1/2 cell line-based mouse micromass cultures.
Murine micromass models have been extensively applied to study chondrogenesis and osteogenesis to elucidate pathways of endochondral bone formation. Here we provide a detailed comparative analysis of the differentiation potential of micromass cultures established from either BMP-2 overexpressing C3H10T1/2 cells or mouse embryonic limb bud-derived chondroprogenitor cells, using micromass cultures from untransfected C3H10T1/2 cells as controls. Although the BMP-2 overexpressing C3H10T1/2 cells failed to form chondrogenic nodules, cells of both models expressed mRNA transcripts for major cartilage-specific marker genes including Sox9, Acan, Col2a1, Snorc, and Hapln1 at similar temporal sequence, while notable lubricin expression was only detected in primary cultures. Furthermore, mRNA transcripts for markers of osteogenic differentiation including Runx2, Osterix, alkaline phosphatase, osteopontin and osteocalcin were detected in both models, along with matrix calcification. Although the adipogenic lineage-specific marker gene FABP4 was also expressed in micromass cultures, Oil Red O-positive cells along with PPARγ2 transcripts were only detected in C3H10T1/2-derived micromass cultures. Apart from lineage-specific marker genes, pluripotency factors (Nanog and Sox2) were also expressed in these models, reflecting on the presence of various mesenchymal lineages as well as undifferentiated cells. This cellular heterogeneity has to be taken into consideration for the interpretation of data obtained by using these models.
Department of Anatomy, Histology and Embryology, Medical and Health Science Centre, University of Debrecen, Nagyerdei krt. 98, H-4032 Debrecen, Hungary. takacs.roland@med.unideb.hu
Roland
R
Takács
Csaba
C
Matta
Csilla
C
Somogyi
Tamás
T
Juhász
Róza
R
Zákány
D050156:Adipogenesis / Q000235:genetics; D000818:Animals; D055396:Bone Morphogenetic Protein 2 / Q000096:biosynthesis / Q000235:genetics; D002454:Cell Differentiation / Q000502:physiology; D002460:Cell Line; D049109:Cell Proliferation; D020219:Chondrogenesis / Q000235:genetics*; D005819:Genetic Markers / Q000235:genetics; D018878:Limb Buds / Q000196:embryology*; D059630:Mesenchymal Stem Cells / Q000378:metabolism*; D051379:Mice; D008809:Mice, Inbred C3H; D010012:Osteogenesis / Q000235:genetics*; D012333:RNA, Messenger / Q000096:biosynthesis; D015398:Signal Transduction / Q000235:genetics
C525719:Bmp2 protein, mouse; D055396:Bone Morphogenetic Protein 2; D005819:Genetic Markers; D012333:RNA, Messenger