scholarly journals Changes in the Molecular Phenotype of Nucleus Pulposus Cells with Intervertebral Disc Aging

PLoS ONE ◽  
2012 ◽  
Vol 7 (12) ◽  
pp. e52020 ◽  
Author(s):  
Xinyan Tang ◽  
Liufang Jing ◽  
Jun Chen
Keyword(s):  
Intervertebral Disc ◽  
Nucleus Pulposus ◽  
Nucleus Pulposus Cells ◽  
Molecular Phenotype

scholarly journals Identifying molecular phenotype of nucleus pulposus cells in human intervertebral disc with aging and degeneration

2016 ◽  
Vol 34 (8) ◽  
pp. 1316-1326 ◽  
Author(s):  
Xinyan Tang ◽  
Liufang Jing ◽  
William J. Richardson ◽  
Robert E. Isaacs ◽  
Robert D. Fitch ◽  
...  
Keyword(s):  
Intervertebral Disc ◽  
Nucleus Pulposus ◽  
Nucleus Pulposus Cells ◽  
Molecular Phenotype

Tissue Engineering of the Intervertebral Disc With Cultured Nucleus Pulposus Cells Using Atelocollagen Scaffold and Growth Factors

Spine ◽  
2012 ◽  
Vol 37 (6) ◽  
pp. 452-458 ◽  
Author(s):  
Kwang-Il Lee ◽  
Seong-Hwan Moon ◽  
Hyang Kim ◽  
Un-Hye Kwon ◽  
Ho-Joong Kim ◽  
...  
Keyword(s):  
Tissue Engineering ◽  
Growth Factors ◽  
Intervertebral Disc ◽  
Nucleus Pulposus ◽  
Nucleus Pulposus Cells

scholarly journals LOX Alleviates Rat Intervertebral Disc Degeneration Through ECM Improvement and Anti-Apoptotic Protection in Nucleus Pulposus Cells

2019 ◽  
Vol 16 (S2) ◽  
pp. 77-77
Author(s):  
Runze Zhao ◽  
Tingting Xia ◽  
Mengyue Wang ◽  
Fan Feng ◽  
Wanqian Liu ◽  
...  
Keyword(s):  
Intervertebral Disc ◽  
Nucleus Pulposus ◽  
Disc Degeneration ◽  
Intervertebral Disc Degeneration ◽  
Nucleus Pulposus Cells

scholarly journals Ligustrazine Prevents Intervertebral Disc Degeneration via Suppression of Aberrant TGFβ Activation in Nucleus Pulposus Cells

2019 ◽  
Vol 2019 ◽  
pp. 1-9
Author(s):  
Shufen Liu ◽  
Yuhao Cheng ◽  
Yuqi Tan ◽  
Jingcheng Dong ◽  
Qin Bian
Keyword(s):  
Growth Factor ◽  
Mouse Model ◽  
Intervertebral Disc ◽  
Nucleus Pulposus ◽  
Disc Degeneration ◽  
Intervertebral Disc Degeneration ◽  
Ex Vivo ◽  
Tissue Growth ◽  
Nucleus Pulposus Cells

Objectives. Aberrant transforming growth factor β (TGFβ) activation is detrimental to both nucleus pulposus (NP) cells and cartilage endplates (CEPs), which can lead to intervertebral disc degeneration (IDD). Ligustrazine (LIG) reduces the expression of inflammatory factors and TGFβ1 in hypertrophic CEP to prevent IDD. In this study, we investigate the effects of LIG on NP cells and the TGFβ signaling. Design. LIG was injected to the lumbar spinal instability (LSI) mouse model. The effect of LIG was evaluated by intervertebral disc (IVD) score in the LSI mouse model. The expression of activated TGFβ was examined using immunostaining with pSmad2/3 antibody. The upright posture (UP) rat model was also treated and evaluated in the same manner to assess the effect of LIG. In ex vivo study, IVDs from four-week old mice were isolated and treated with 10−5, 10−6, and 10−7 M of LIG. We used western blot to detect activated TGFβ expression. TGFβ-treated human nucleus pulposus cells (HNPCs) were cotreated with optimized dose of LIG in vitro. Immunofluorescence staining was performed to determine pSmad2/3, connective tissue growth factor (CCN2), and aggrecan (ACAN) expression levels. Results. IVD score and the percentage of pSmad2/3+ NP cells were low in LIG-treated LSI mice in comparison with LSI mice, but close to the levels in the Sham group. Similarly, LIG reduced the overexpression of TGFβ1 in NP cells. The inhibitory effect of LIG was dose dependent. A dose of 10−5 M LIG not only strongly attenuated Smad2/3 phosphorylation in TGFβ-treated IVD ex vivo but also suppressed pSmad2/3, CCN2, and ACAN expression in TGFβ-treated NP cells in vitro. Conclusions. LIG prevents IDD via suppression of TGFβ overactivation in NP cells.

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