scholarly journals Berberine suppresses apoptosis and extracellular matrix (ECM) degradation in nucleus pulposus cells and ameliorates disc degeneration in a rodent model

2018 ◽  
Vol 14 (6) ◽  
pp. 682-692 ◽  
Author(s):  
Yu Chen ◽  
Zengming Zheng ◽  
Jianle Wang ◽  
Chengxuan Tang ◽  
Sinan Khor ◽  
...  
Keyword(s):  
Extracellular Matrix ◽  
Nucleus Pulposus ◽  
Disc Degeneration ◽  
Rodent Model ◽  
Nucleus Pulposus Cells ◽  
Ecm Degradation

Cardamonin protects nucleus pulposus cells against IL-1β-induced inflammation and catabolism via Nrf2/NF-κB axis

2021 ◽  
Author(s):  
Chenglong Xie ◽  
Haiwei Ma ◽  
Yifeng Shi ◽  
Junli Li ◽  
Hongqiang Wu ◽  
...  
Keyword(s):  
Extracellular Matrix ◽  
Inflammatory Response ◽  
Signaling Pathway ◽  
Nucleus Pulposus ◽  
Nucleus Pulposus Cells ◽  
Ecm Degradation

IL-1β promotes inflammatory response and extracellular matrix (ECM) degradation through NF-κB signaling pathway; while cardamonin attenuates the inflammatory response and ECM degradation by suppressing NF-κB signaling pathway via Nrf2/HO-1 axis.

scholarly journals Injectable exosome-functionalized extracellular matrix hydrogel for metabolism balance and pyroptosis regulation in intervertebral disc degeneration

2021 ◽  
Vol 19 (1) ◽  
Author(s):  
Hongyuan Xing ◽  
Zengjie Zhang ◽  
Qijiang Mao ◽  
Chenggui Wang ◽  
Youlong Zhou ◽  
...  
Keyword(s):  
Extracellular Matrix ◽  
Intervertebral Disc ◽  
Sustained Release ◽  
Nucleus Pulposus ◽  
Disc Degeneration ◽  
Intervertebral Disc Degeneration ◽  
Therapeutic Effects ◽  
Nucleus Pulposus Cells ◽  
Promising Therapeutic Approach ◽  
Hydrogel System

AbstractExosome therapy is a promising therapeutic approach for intervertebral disc degeneration (IVDD) and achieves its therapeutic effects by regulating metabolic disorders, the microenvironment and cell homeostasis with the sustained release of microRNAs, proteins, and transcription factors. However, the rapid clearance and disruption of exosomes are the two major challenges for the application of exosome therapy in IVDD. Herein, a thermosensitive acellular extracellular matrix (ECM) hydrogel coupled with adipose-derived mesenchymal stem cell (ADSC) exosomes (dECM@exo) that inherits the superior properties of nucleus pulposus tissue and ADSCs was fabricated to ameliorate IVDD. This thermosensitive dECM@exo hydrogel system can provide not only in situ gelation to replenish ECM leakage in nucleus pulposus cells (NPCs) but also an environment for the growth of NPCs. In addition, sustained release of ADSC-derived exosomes from this system regulates matrix synthesis and degradation by regulating matrix metalloproteinases (MMPs) and inhibits pyroptosis by mitigating the inflammatory response in vitro. Animal results demonstrated that the dECM@exo hydrogel system maintained early IVD microenvironment homeostasis and ameliorated IVDD. This functional system can serve as a powerful platform for IVD drug delivery and biotherapy and an alternative therapy for IVDD.

scholarly journals Oxymatrine suppresses IL-1β-induced degradation of the nucleus pulposus cell and extracellular matrix through the TLR4/NF-κB signaling pathway

2020 ◽  
Vol 245 (6) ◽  
pp. 532-541
Author(s):  
Kang Wei ◽  
Jun Dai ◽  
Zhenggang Wang ◽  
Yaping Pei ◽  
Yan Chen ◽  
...  
Keyword(s):  
Extracellular Matrix ◽  
Intervertebral Disc ◽  
Nucleus Pulposus ◽  
Disc Degeneration ◽  
Interleukin 6 ◽  
Intervertebral Disc Degeneration ◽  
Interleukin 1 ◽  
Interleukin 1 Beta ◽  
Matrix Degradation ◽  
Nucleus Pulposus Cells

Intervertebral disc degeneration is the main cause of low back pain. However, its pathomechanism has not been fully clarified yet. Previous studies have indicated that inflammation may lead to apoptosis of nucleus pulposus cells and break the balance between anabolism and catabolism of the nucleus pulposus extracellular matrix. The purpose of this study is to explore the mitigative effect of oxymatrine on extracellular matrix degradation and apoptosis of nucleus pulposus cells after interleukin-1 beta-induced inflammation, and its possible signaling pathway. We examined the gene and protein levels of collagen II, aggrecan, and MMPs (MMP2/3/9/13) and interleukin 6 in nucleus pulposus cells. The results demonstrated that oxymatrine could reduce extracellular matrix degradation and apoptosis of nucleus pulposus cells; interleukin-1 beta prompted the expression of MMPs and interleukin 6 through TLR4/NF-κB axis, while oxymatrine reduced the expression of MMPs and TNF-α induced by interleukin-1 beta. Moreover, TAK 242, as a small molecule inhibitor of TLR4 signaling, was used to detect the effect of oxymatrine on the TLR4/NF-κB signaling. The final experimental results show that oxymatrine could reduce the inflammatory response of nucleus pulposus cells and degradation of nucleus pulposus tissue. Oxymatrine may be a potential medicine to reduce disc inflammation and relieve intervertebral disc degeneration by inhibiting the TLR4/NF-κB signal pathway. Impact statement Currently, drug therapy is a potential treatment for patients with intervertebral disc degeneration. In the present research, oxymatrine intervenes in intervertebral disc degeneration effectively via regulating inflammation in intervertebral disc degeneration rats. Our research highlights the therapeutic potential of oxymatrine in the treatment of intervertebral disc degeneration.

scholarly journals The long non-coding RNA NEAT1 contributes to extracellular matrix degradation in degenerative human nucleus pulposus cells

2018 ◽  
Vol 243 (7) ◽  
pp. 595-600 ◽  
Author(s):  
Zhi Ruan ◽  
Hui Ma ◽  
Jing Li ◽  
Huiyong Liu ◽  
Haoruo Jia ◽  
...  
Keyword(s):  
Intervertebral Disc ◽  
Nucleus Pulposus ◽  
Disc Degeneration ◽  
Intervertebral Disc Degeneration ◽  
Mapk Signaling ◽  
Rt Pcr ◽  
Nucleus Pulposus Cells ◽  
Erk Mapk ◽  
Ecm Degradation ◽  
Lncrna Neat1

Intervertebral disc degeneration is a complex disease involving genetic and environmental factors and multiple cellular processes. The role and expression of the lncRNA NEAT1 were assessed in intervertebral disc degeneration. NEAT1 expression was assessed in degenerative and control nucleus pulposus using RT-PCR. Western blotting and RT-PCR were also used to investigate p53 and p21 levels in nucleus pulposus tissues. NEAT1 function in degenerative nucleus pulposus cells was assessed with gain- and loss-of-function experiments. ERK/MAPK signaling was also examined. NEAT1, p53, and p21 were dramatically upregulated in intervertebral disc degeneration. Furthermore, catabolic MMP13 and ADAMTS5 were dysregulated and collagen II and aggrecan were downregulated after NEAT1 overexpression. This effect was reversed by transfection with si-NEAT1 in degenerative nucleus pulposus cells. In addition, NEAT1 was found to affect the activation of the ERK/MAPK pathway. The NEAT1-induced ECM degradation may involve ERK1/2/MAPK signaling. LncRNA NEAT1 may represent a novel molecular target for intervertebral disc degeneration treatment by preventing nucleus pulposus ECM degradation. Impact statement For the first time, our study demonstrates that lncRNA NEAT1 plays a role in the occurrence and development of IDD by participating in extracellular matrix remodeling. This lncRNA regulates catabolic MMP13 and ADAMTS5 and anabolic collagen II and aggrecan by affecting the ERK/MAPK signaling pathway in degenerative human nucleus pulposus (NP) cells. Our research provides a scientific basis for targeting of NEAT1 for the IDD.

Transplantation of Activated Nucleus Pulposus Cells after Cryopreservation: Efficacy Study in Canine Disc Degeneration Model

2014 ◽  
Vol 4 (1_suppl) ◽  
pp. s-0034-1376573-s-0034-1376573
Author(s):  
T. Nukaga ◽  
D. Sakai ◽  
A. Hiyama ◽  
T. Ishii ◽  
T. Nakai ◽  
...  
Keyword(s):  
Nucleus Pulposus ◽  
Disc Degeneration ◽  
Efficacy Study ◽  
Nucleus Pulposus Cells
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