scholarly journals Effects of Black Jade on Osteogenic Differentiation of Adipose Derived Stem Cells under Benzopyrene

2021 ◽  
Vol 11 (3) ◽  
pp. 1346
Author(s):  
Yoonjin Park ◽  
Gyeong Hee Shin ◽  
Gyo Sik Jin ◽  
Sungbae Jin ◽  
Boyong Kim ◽  
...  

Jade, a popular gemstone symbolizing beauty, grace, and longevity, is known to improve blood circulation; however, scientific research evidence is still lacking. The effect of black jade extract on the expression levels of apoptotic and osteogenic genes was validated using qPCR and flow cytometry. In combination with the use of a fluorescence microscope, osteogenic differentiation and the stained osteocytes count were analyzed. Under the pressure of benzo(a)pyrene, dermal cell apoptosis was accelerated and the osteogenic differentiation of adipose-derived stem cells (ASCs) was suppressed; but black jade extract counteracted the effects. Through an anti-apoptotic mechanism, the extract suppressed the expression of apoptotic proteins Bax and cytochrome C to 9 and 4.8 times, respectively, compared to that in dermal cells exposed to benzo(a)pyrene. During osteogenic differentiation of ASCs, the extract enhanced their differentiation despite being exposed to benzo(a)pyrene, and the relative levels of the osteoblast differentiation markers osteoponin, osteocalcin, and sclerostin were 1.87, 2.54, and 3.9 times higher, respectively, than those in the conditioned medium by benzo(a)pyrene. These effects of the extract indicate that black jade extract is very useful when applied as a functional biomaterial.


Author(s):  
Chunli Wang ◽  
Songcai Liu ◽  
Jiaxin Li ◽  
Yunyun Cheng ◽  
Zhaoguo Wang ◽  
...  

MicroRNAs let-7c and let-7f, two members of the let-7 family, were involved in regulating osteoblast differentiation and have an important role in bone formation. Let-7e-5p, which also belonged to the let-7 family, presented in the differentiation of adipose-derived stem cells and mouse embryonic stem cells. However, the role of let-7e-5p in osteoblast differentiation was unclear. Thus, this study aimed to elucidate the function of let-7e-5p in osteoblast differentiation and its mechanism. Firstly, we found that the let-7e-5p mimic promoted osteoblast differentiation but not the proliferation of MC3T3-E1 cells by positively regulating the expression levels of osteogenic-associated genes (RUNX2, OCN, OPN, and OSX), the activity of ALP, and formation of mineralized nodules. Moreover, we ascertained that the let-7e-5p mimic downregulated the post-transcriptional expression of SOCS1 by specifically binding to the 3′ untranslated region of SOCS1 mRNA. Also, let-7e-5p-induced SOCS1 downregulation increased the protein levels of p-STAT5 and IGF-1, which were both modulated by SOCS1 molecules. Furthermore, let-7e-5p abrogated the inhibition of osteogenic differentiation mediated by SOCS1 overexpression. Therefore, these results suggested that let-7e-5p regulated the differentiation of MC3T3-E1 cells through the JAK2/STAT5 pathway to upregulate IGF-1 gene expression by inhibiting SOCS1. These findings may provide a new insight into the regulatory role of let-7e-5p in osteogenic differentiation and imply the existence of a novel mechanism underlying let-7e-5p-mediated osteogenic differentiation.



Author(s):  
Ai‐Ning Lai ◽  
Rong Zhou ◽  
Bin Chen ◽  
Long Guo ◽  
Yu‐Ya Dai ◽  
...  




2017 ◽  
Vol 88 ◽  
pp. 384-394 ◽  
Author(s):  
Yaping Ye ◽  
Xingzhi Jing ◽  
Na Li ◽  
Yingxing Wu ◽  
Bingbing Li ◽  
...  


PLoS ONE ◽  
2012 ◽  
Vol 7 (12) ◽  
pp. e51264 ◽  
Author(s):  
Sarah Strauß ◽  
Sonja Dudziak ◽  
Ronny Hagemann ◽  
Stephan Barcikowski ◽  
Malte Fliess ◽  
...  




Author(s):  
Banglian Deng ◽  
Wenzhong Zhu ◽  
Yansheng Duan ◽  
Yuqian Hu ◽  
Xuefeng Chen ◽  
...  


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