Isolation and identification of stem cells from degenerated human intervertebral discs and their migration characteristics.
Mesenchymal stem cells (MSCs) have been isolated and identified separately from the three components of intervertebral disc, i.e. annulus fibrosus (AF), nucleus pulposus (NP), and cartilage endplate (CEP). However, few studies have been carried out to compare the properties of these three kinds of stem cells, especially their migration ability which is essential for their potential clinical application. In this study, MSCs were isolated from AF, NP, and CEP, respectively, of human degenerated discs and identified by surface markers and multilineage differentiation assay at passage 3. These three types of stem cells were named as AF-MSCs, NP-MSCs, and CEP-MSCs. Then, their biological characteristics were compared in terms of proliferation, passage, colony formation, migration, and invasion capacity. Results showed that all the three types of cells were identified as MSCs and had similar characteristics in proliferation, passage, and colony formation capacity. CEP-MSCs showed the highest migration and invasion potency, while NP-MSCs showed the lowest migration ability and almost no invasion potency, suggesting that CEP-MSCs had the most powerful properties of migration and invasion when compared with AF-MSCs and NP-MSCs. It was also found that the expression of CXCR4 was higher in CEP-MSCs than in the other two, suggesting that SDF-1/CXCR4 axis may play significant roles in the migration of these cells.
Department of Orthopedic Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, China.
Shuhao
S
Liu
Department of Orthopedic Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, China.
Haifeng
H
Liang
Department of Orthopedic Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, China.
Soo-Min
SM
Lee
Department of Orthopedic Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, China.
Zheng
Z
Li
Department of Orthopedic Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, China.
Jian
J
Zhang
Department of Orthopedic Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, China.
Qinming
Q
Fei
D053687:Adult Stem Cells / Q000473:pathology / Q000502:physiology; D000070616:Annulus Fibrosus / Q000473:pathology / Q000502:physiology; D015415:Biomarkers / Q000378:metabolism; D002454:Cell Differentiation; D002465:Cell Movement / Q000502:physiology; D049109:Cell Proliferation; D002478:Cells, Cultured; D054377:Chemokine CXCL12 / Q000235:genetics / Q000378:metabolism; D005260:Female; D006801:Humans; D055959:Intervertebral Disc Degeneration / Q000235:genetics / Q000473:pathology; D008297:Male; D059630:Mesenchymal Stem Cells / Q000502:physiology; D008875:Middle Aged; D000070614:Nucleus Pulposus / Q000473:pathology / Q000502:physiology; D012333:RNA, Messenger / Q000235:genetics / Q000378:metabolism; D019718:Receptors, CXCR4 / Q000235:genetics / Q000378:metabolism
D015415:Biomarkers; C515255:CXCL12 protein, human; C527276:CXCR4 protein, human; D054377:Chemokine CXCL12; D012333:RNA, Messenger; D019718:Receptors, CXCR4