Advances in Clinical and Experimental Medicine

Title abbreviation: Adv Clin Exp Med
JCR Impact Factor (IF) – 1.736
5-Year Impact Factor – 2.135
Index Copernicus  – 168.52
MEiN – 70 pts

ISSN 1899–5276 (print)
ISSN 2451-2680 (online)
Periodicity – monthly

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Advances in Clinical and Experimental Medicine

2019, vol. 28, nr 1, January, p. 45–50

doi: 10.17219/acem/76638

Publication type: original article

Language: English

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Cajanine promotes osteogenic differentiation and proliferation of human bone marrow mesenchymal stem cells

Zi-Yi Zhao1,A,E,F, Lei Yang2,B, Xiaohong Mu2,C, Lin Xu1,B, Xing Yu1,C, Yong Jiao1,B, Xiaozhe Zhang1,D, Lingling Fu1,B

1 Department of Orthopedics, Dongzhimen Hospital, Beijing University of Chinese Medicine, China

2 Cancer Center, 1st Hospital of Jilin University, Changchun, China

Abstract

Background. Seed cells – mesenchymal stem cells (MSCs) – appear to be an attractive tool in the context of tissue engineering. Bone marrow represents the main source of MSCs for both experimental and clinical studies. However, the number limitation of bone marrow MSCs (BMSCs) and decreased function caused by proliferation make the search for adequate alternative sources of these cells for autologous and allogenic transplant necessary.
Objectives. This study was aimed to investigate the roles of cajanine isolated from the extracts of Cajanus cajan L. Millsp. in the proliferation and differentiation of BMSCs, and to discover the mechanism of proliferation of BMSCs promoted by cajanine.
Material and Methods. Bone marrow mesenchymal stem cells were cultured in high-glucose Dulbecco’s Modified Eagle’s Medium (DMEM) and osteogenic differentiation was induced by adding dexamethasone, ascorbic acid and β-glycerophosphate supplements. Bone marrow MSCs were cultured in medium without cajanine or supplemented with cajanine. The information about the proliferation and osteogenic differentiation of BMSCs was collated. The osteogenic differentiation potential of BMSCs was also assessed at the 3rd passage by Von Kossa staining. To observe cell signal transduction changes of BMSCs after culturing them with cajanine for 24 h, the western blot analysis was performed to detect phosphorylated cell cycle proteins and activated cyclins.
Results. After osteogenic induction, the differentiation of BMSCs was accelerated by cajanine treatment. Osteogenesis markers were upregulated by cajanine treatment at both protein and mRNA levels. Cajanine obviously promoted the proliferation of BMSCs. After BMSCs were cultured with cajanine for 24 h, the cell cycle regulator proteins were phosphorylated or upregulated.
Conclusion. Cajanine can promote the expansion efficiency of BMSCs, at the same time keeping their multi-differentiation potential. Cajanine can activate the cell cycle signal transduction pathway, thus inducing cells to enter the G1/S phase and accelerating cells entering the G2/M phase. This study can contribute to the development of cajanine-based drugs in tissue engineering.

Key words

mesenchymal stem cells, placenta, Cajanus cajan L., tissue engineering

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