Orthopeadic Surgery
Iron accumulation induces reactive oxide species to inhibits mesenchymal stem cells and osteogenesis via nicotinamide adenine dinucleotide phosphate reduced oxidase 4 activation
Yuan Ye, Fei Beibei, Yu Chen, Xu Fei, Wang Liang, Yang Fan, Zhang Hui, Li Guangfei, Zhang Zhifang, Gao Yan, Liu Gongwen, Xu Youjia
Published 2018-11-08
Cite as Chin J Exp Surg, 2018,35(11): 1991-1994. DOI: 10.3760/cma.j.issn.1001-9030.2018.11.002
Abstract
ObjectiveTo study iron accumulation affect on mesenchymal stem cells (MSCs), and to explore iron accumulation in MSCs level pathogenesis.
MethodsIn vivo, 6-8 weeks C57 male mice were devived into control group and experimental group, the experimental group was intraperitoneally injected with ferric ammonium citrate (FAC) of 0.1 g/kg/week intervention in eight weeks, the two groups were tested: serum ferritin (FER), osteogenesis markers procollagen type 1 amino-terminal propeptide (P1NP), distal femur trabecular bone reconstruction of three dimensional form and spatial structure parameter, MSCs accounted for the proportion of bone marrow cells. In vitro, 6-8 weeks male C57 mice bone marrow tissue were separation, MSCs were cultivated and devided after reaching a certain number in the control group and experimental group. After 24 h FAC intervention in experimental group, two groups were tested: reactive oxygen species (ROS), nicotinamide adenine dinucleotide phosphate reduced oxidase 4 (NOX4) expression level. Statistical analyses were performed.
ResultsFAC group serum FER [(14.72±0.97) μg/L] was elevated compared to control group [(4.92±0.82) μg/L], P=0.002. FAC group bone marrow MSCs [(2.08±0.98)%] was reduced compared to control group [(3.98±0.82%)%], P=0.004. FAC group MSCs ROS mean value (56.26±8.36) was exceed to control group (257.65±12.69), P=0.000; MSCs NOX4 cell protein was increased compared with the control group; Osteogenesis index P1NP in FAC group [(4.81±0.51) ng/ml] was decreased compared to control group [(10.06±0.96) ng/ml], P=0.001. The micro-CT detection of bone mineral density in FAC group [(53.12±9.86) mg/mm3] was decreased compared to control group [(103.76±7.92) mg/mm3]. FAC group spatial structure parameter showed bone volume/ tissue volume (BV/TV): [(11.23±1.86)%] was decreased compared to control group [(18.63±2.02)%], P=0.002; FAC group trabecular thickness (Tb. Th): [(0.057±0.018) mm] was decreased to control group [(0.083±0.006) mm], P=0.003; FAC group trabecular number (Tb. N): [(0.92±0.22) N/mm] was decreased compared to control group [(1.25±0.18) N/mm], P=0.004.
ConclusionThe osteogenetic activity is restrained after iron accumulation may be associated with increased MSCs ROS, MSCs ROS increased may be related to iron accumulation induced NOX4 activation.
Key words:
Iron accumulation; Mesenchymal stem cells; Osteoporosis; Reactive oxide species
Contributor Information
Yuan Ye
Department of Orthopedics, the Second Affiliated Hospital of Soochow University, Suzhou 215004, China
Fei Beibei
Department of Gynecology and Obstetrics, the Second Affiliated Hospital of Soochow University, Suzhou 215004, China
Yu Chen
Department of Orthopedics, the Second Affiliated Hospital of Soochow University, Suzhou 215004, China
Xu Fei
Hematology Center of Cyrus Tang Medical Institute, Soochow University School of Medicine, Suzhou 215123, China; Department of Basic Medicine, Wuxi Medical School, Jiangnan University, Wuxi 214122, China
Wang Liang
Department of Orthopedics, the Second Affiliated Hospital of Soochow University, Suzhou 215004, China
Yang Fan
Osteoporosis Institute of Soochow University, Suzhou 215004, China
Zhang Hui
Department of Orthopedics, the Second Affiliated Hospital of Soochow University, Suzhou 215004, China
Li Guangfei
Department of Orthopedics, the Second Affiliated Hospital of Soochow University, Suzhou 215004, China
Zhang Zhifang
Municipal Health and Family Planning Commission of Suzhou, Suzhou 215000, China
Gao Yan
Department of Orthopedics, the Second Affiliated Hospital of Soochow University, Suzhou 215004, China
Liu Gongwen
Department of Orthopedics, the Second Affiliated Hospital of Soochow University, Suzhou 215004, China
Xu Youjia
Department of Orthopedics, the Second Affiliated Hospital of Soochow University, Suzhou 215004, China