Title |
Interleukin-6/interleukin-6 receptor complex promotes osteogenic differentiation of bone marrow-derived mesenchymal stem cells
|
---|---|
Published in |
Stem Cell Research & Therapy, January 2018
|
DOI | 10.1186/s13287-017-0766-0 |
Pubmed ID | |
Authors |
Zhongyu Xie, Su’an Tang, Guiwen Ye, Peng Wang, Jinteng Li, Wenjie Liu, Ming Li, Shan Wang, Xiaohua Wu, Shuizhong Cen, Guan Zheng, Mengjun Ma, Yanfeng Wu, Huiyong Shen |
Abstract |
Interleukin-6 (IL-6) with IL-6 receptor (IL-6R) play an important role in the tissue regeneration in vivo, especially bone metabolism. Bone marrow -derived mesenchymal stem cells (BM-MSCs) are multipotent stromal cells, which are main origin of osteoblasts. However, the roles of IL-6 and IL-6R in the osteogenic differentiation of BM-MSCs are still unclear. The expression of IL-6 and IL-6R was detected in BM-MSCs during osteogenic differentiation. The activation of the STAT3 pathway was assessed and its role in the osteogenic differentiation of BM-MSCs was determined using the specific inhibitor AG490. Exogenous IL-6/soluble IL-6R or antibodies against IL-6/IL-6R were used to confirm the mechanism by which the IL-6/IL-6R complex promotes the osteogenic differentiation. The levels of IL-6 and IL-6R, especially the level of membranous IL-6R but not that of soluble IL-6R, increased during osteogenic differentiation in BM-MSCs. The levels of IL-6 and IL-6R were positively correlated with the osteogenic potential of BM-MSCs. The STAT3 signaling pathway was activated during the osteogenic differentiation of BM-MSCs. AG490 markedly inhibited the activation of the STAT3 pathway and, subsequently, the osteogenic differentiation potential of BM-MSCs. Additionally, exogenous IL-6 and soluble IL-6R accelerated the osteogenic differentiation of BM-MSCs. In contrast, antibodies against IL-6 or IL-6R suppressed the osteogenic differentiation of BM-MSCs. Moreover, IL-6 and IL-6R were found to stimulate each other's expression in BM-MSCs. IL-6 and IL-6R levels increase during the osteogenic differentiation of BM-MSCs. These two molecules form a complex to activate the downstream STAT3 signaling pathway, which promotes osteogenic differentiation in BM-MSCs via an autocrine/paracrine feedback loop. |
Mendeley readers
Geographical breakdown
Country | Count | As % |
---|---|---|
Unknown | 72 | 100% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Student > Ph. D. Student | 10 | 14% |
Student > Bachelor | 9 | 13% |
Researcher | 8 | 11% |
Student > Master | 7 | 10% |
Other | 4 | 6% |
Other | 11 | 15% |
Unknown | 23 | 32% |
Readers by discipline | Count | As % |
---|---|---|
Biochemistry, Genetics and Molecular Biology | 17 | 24% |
Medicine and Dentistry | 15 | 21% |
Agricultural and Biological Sciences | 4 | 6% |
Immunology and Microbiology | 2 | 3% |
Pharmacology, Toxicology and Pharmaceutical Science | 1 | 1% |
Other | 2 | 3% |
Unknown | 31 | 43% |