Tigogenin inhibits adipocytic differentiation and induces osteoblastic differentiation in mouse bone marrow stromal cells

2007 ◽  
Vol 270 (1-2) ◽  
pp. 17-22 ◽  
Author(s):  
Hua Zhou ◽  
Xi Yang ◽  
Naili Wang ◽  
Yaou Zhang ◽  
Guoping Cai
2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Justyna Magdalena Kowal ◽  
Sören Möller ◽  
Dalia Ali ◽  
Florence Figeac ◽  
Torben Barington ◽  
...  

Abstract Background Transplantation of human bone marrow stromal cells (hBMSCs) is a promising therapy for bone regeneration due to their ability to differentiate into bone forming osteoblastic cells. However, transplanted hBMSCs exhibit variable capacity for bone formation resulting in inconsistent clinical outcome. The aim of the study was to identify a set of donor- and cell-related characteristics that detect hBMSCs with optimal osteoblastic differentiation capacity. Methods We collected hBMSCs from 58 patients undergoing surgery for bone fracture. Clinical profile of the donors and in vitro characteristics of cultured hBMSCs were included in uni- and multivariable analysis to determine their predictive value for osteoblastic versus adipocytic differentiation capacity assessed by quantification of mineralized matrix and mature adipocyte formation, respectively. Results We identified a signature that explained > 50% of variation in osteoblastic differentiation outcome which included the following positive predictors: donor sex (male), absence of osteoporosis diagnosis, intake of vitamin D supplements, higher fraction of CD146+, and alkaline phosphate (ALP+) cells. With the exception of vitamin D and ALP+ cells, these variables were also negative predictors of adipocytic differentiation. Conclusions Using a combination of clinical and cellular criteria, it is possible to predict differentiation outcome of hBMSCs. This signature may be helpful in selecting donor cells in clinical trials of bone regeneration.


2003 ◽  
Vol 21 (2) ◽  
pp. 121-132 ◽  
Author(s):  
Yossef S. Levy ◽  
Doron Merims ◽  
Hanna Panet ◽  
Yael Barhum ◽  
Eldad Melamed ◽  
...  

2012 ◽  
Vol 92 (9) ◽  
pp. 1208-1219 ◽  
Author(s):  
Cheng Zhong ◽  
Xin Zhang ◽  
Zhengjian Xu ◽  
Rongxin He

Background Electromagnetic fields (EMFs) used in stem-cell tissue engineering can help elucidate their biological principles. Objective The aim of this study was to investigate the effects of low-intensity EMFs on cell proliferation, differentiation, and cycle in mouse bone marrow stromal cells (BMSCs) and the in vivo effects of EMFs on BMSC. Methods Harvested BMSCs were cultured for 3 generations and divided into 4 groups. The methylthiotetrazole (MTT) assay was used to evaluate cell proliferation, and alkaline phosphatase activity was measured via a colorimetric assay on the 3rd, 7th, and 10th days. Changes in cell cycle also were analyzed on the 7th day, and bone nodule formation was analyzed on the 12th day. Additionally, the expression of the collagen I gene was examined by reverse transcription-polymerase chain reaction (RT-PCR) on the 10th day. The BMSCs of the irradiated group and the control group were transplanted into cortical bone of different mice femurs separately, with poly(lactic-co-glycolic acid) (PLGA) serving as a scaffold. After 4 and 8 weeks, bone the bone specimens of mice were sliced and stained by hematoxylin and eosin separately. Results The results showed that EMFs (0.5 mT, 50 Hz) accelerated cellular proliferation, enhanced cellular differentiation, and increased the percentage of cells in the G2/M+S (postsynthetic gap 2 period/mitotic phase + S phase) of the stimulation. The EMF-exposed groups had significantly higher collagen I messenger RNA levels than the control group. The EMF + osteogenic medium–treated group readily formed bone nodules. Hematoxylin and eosin staining showed a clear flaking of bone tissue in the irradiated group. Conclusion Irradiation of BMSCs with low-intensity EMFs (0.5 mT, 50 Hz) increased cell proliferation and induced cell differentiation. The results of this study did not establish a stricter animal model for studying osteogenesis, and only short-term results were investigated. Further study of the mechanism of EMF is needed.


2008 ◽  
Vol 0 (0) ◽  
pp. 080422095744451 ◽  
Author(s):  
Takahisa Anada ◽  
Takashi Kumagai ◽  
Yoshitomo Honda ◽  
Taisuke Masuda ◽  
Ryutaro Kamijo ◽  
...  

RSC Advances ◽  
2016 ◽  
Vol 6 (26) ◽  
pp. 21725-21734 ◽  
Author(s):  
Kun Ge ◽  
Wentong Sun ◽  
Shaohan Zhang ◽  
Shuxian Wang ◽  
Guang Jia ◽  
...  

Applications of europium-doped NaYF4 (NaYF4:Eu3+) nanoparticles in biomedical fields will inevitably increase their exposure to humans, therefore, the assessment of toxicities must be taken into consideration.


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