应用天然产物 ›› 2012, Vol. 2 ›› Issue (2): 87-91.DOI: 10.1007/s13659-012-0017-0
• Regular Article • 上一篇
Ramona LIEDERa,b, Sigrídur Thóra REYNISDÓTTIRa, Finnbogi THORMÓDSSONe, Chuen-How NGc, Jon Magnús EINARSSONc, Jóhannes GÍSLASONc, Jóhannes BJÖRNSSONd,f, Sveinn GUDMUNDSSONa, Pétur Henry PETERSENe, Ólafur Eysteinn SIGURJÓNSSONa,b,d
Ramona LIEDERa,b, Sigrídur Thóra REYNISDÓTTIRa, Finnbogi THORMÓDSSONe, Chuen-How NGc, Jon Magnús EINARSSONc, Jóhannes GÍSLASONc, Jóhannes BJÖRNSSONd,f, Sveinn GUDMUNDSSONa, Pétur Henry PETERSENe, Ólafur Eysteinn SIGURJÓNSSONa,b,d
摘要: Human mesenchymal stem cells(hMSC) can be expanded in vitro and differentiated towards osteogenic, chondrogenic or adipogenic lineages, making them an attractive source for tissue engineering and regenerative medicine. Chitinase-like-proteins(CLPs) belong to the family 18 glycosyl hydrolases and are believed to play a role in inflammation and tissue remodelling. The aim of this study was to determine the effect of the aminosugar glucosamine on the expression of the CLP YKL-40 during osteogenic differentiation of hMSC. Glucosamine did not affect multipotency of hMSC nor proliferation rate of undifferentiated hMSC. YKL-40 was expressed during both expansion of undifferentiated hMSC and during osteogenic differentiation. A slight but nonsignificant increase in YKL-40 expression was observed with glucosamine, accompanied by a pH-dependent delay in mineralization. However, glucosamine induced higher expression of osteogenic marker genes.