Cannabidiol Promotes Osteogenic Differentiation of Bone Marrow Mesenchymal Stem Cells in the Inflammatory Microenvironment via the CB2-dependent p38 MAPK Signaling Pathway
- Author:
Lin LI
1
;
Jin FENG
;
Lei SUN
;
Yao-wei XUAN
;
Li WEN
;
Yun-xia LI
;
Shuo YANG
;
Biao ZHU
;
Xiao-yu TIAN
;
Shuang LI
;
Li-sheng ZHAO
;
Rui-jie DANG
;
Ting JIAO
;
Hai-song ZHANG
;
Ning WEN
Author Information
- Publication Type:ORIGINAL ARTICLE
- From:International Journal of Stem Cells 2022;15(4):405-414
- CountryRepublic of Korea
- Language:English
-
Abstract:
Background and Objectives:Chronic inflammation of bone tissue often results in bone defects and hazards to tissue repair and regeneration. Cannabidiol (CBD) is a natural cannabinoid with multiple biological activities, including anti-inflammatory and osteogenic potential. This study aimed to investigate the efficacy and mechanisms of CBD in the promotion of bone marrow mesenchymal stem cells (BMSCs) osteogenic differentiation in the inflammatory microenvironment.
Methods:and Results: BMSCs isolated from C57BL/6 mice, expressed stem cell characteristic surface markers and pre-sented multidirectional differentiation potential. The CCK-8 assay was applied to evaluate the effects of CBD on BMSCs’ vitality, and demonstrating the safety of CBD on BMSCs. Then, BMSCs were stimulated with lipopolysaccharide (LPS) to induce inflammatory microenvironment. We found that CBD intervention down-regulated mRNA expression levels of inflammatory cytokines and promoted cells proliferation in LPS-treated BMSCs, also reversed the protein and mRNA levels downregulation of osteogenic markers caused by LPS treatment. Moreover, CBD intervention activated the cannabinoid receptor 2 (CB2) and the p38 mitogen-activated protein kinase (MAPK) signaling pathway. While AM630, a selective CB2 inhibitor, reduced phosphorylated (p)-p38 levels. In addition, AM630 and SB530689, a selective p38 MAPK inhibitor, attenuated the enhancement of osteogenic markers expression levels by CBD in inflammatory microenvironment, respectively.
Conclusions:CBD promoted osteogenic differentiation of BMSCs via the CB2/p38 MAPK signaling pathway in the inflammatory microenvironment.
