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|Title:||Combined effects of TGFβ1 and BMP2 in serum-free chondrogenic differentiation of mesenchymal stem cells induced hyaline-like cartilage formation|
|Authors:||Toh, W.S. |
|Source:||Toh, W.S., Liu, H., Heng, B.C., Rufaihah, A.J., Ye, C.P., Cao, T. (2005). Combined effects of TGFβ1 and BMP2 in serum-free chondrogenic differentiation of mesenchymal stem cells induced hyaline-like cartilage formation. Growth Factors 23 (4) : 313-321. ScholarBank@NUS Repository. https://doi.org/10.1080/08977190500252763|
|Abstract:||This study investigated the effects of TGFβ1, BMP2 or a combination of both on the chondrogenic differentiation of mesenchymal stem cells (MSCs) in a serum-free micromass culture system in vitro. Putative MSCs harvested from the iliac crest of 4-5 month old New Zealand White Rabbits were expanded and cultured in three-dimensional high density micromass aggregate cultures containing TGFβ1, BMP2 or a combination of both, in the absence of serum. After 14-20 days of culture, chondrogenic differentiation of the MSCs was assayed by toluidine blue staining, immunohistochemistry and semi-quantitative RT-RCR of type I collagen (CI) and type II collagen (CII). Quantitative measurements of cell proliferation and sulfated glycosaminoglycan (s-GAG) were also carried out to assess the growth rate and matrix deposition of the cultured aggregates. Both immunohistochemical staining and semi-quantitative RT-PCR showed that the combination of BMP2 and TGFβ1 resulted in a marked enhancement of collagen II synthesis, with minimal collagen I expression, which would suggest hyaline-like cartilage formation. Additionally, BMP2 and TGFβ1 had a synergistic effect on matrix proteoglycan deposition, as assessed by metachromatic toluidine blue staining. This is consistent with the quantitative measurement of glycosaminoglycans, whereby a significant increase in GAG/DNA was noted in the co-treatment group. Hence, it can be concluded that the combination of BMP2 and TGFβ1 has a synergistic effect on the differentiation of MSC into hyaline-like cartilage tissue. © 2005 Taylor & Francis.|
|Source Title:||Growth Factors|
|Appears in Collections:||Staff Publications|
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