Krüppel like factor 10 prevents intervertebral disc degeneration via TGF-β signaling pathway both in vitro and in vivo

Stachydrine ameliorates inflammatory responses and extracellular matrix degradation, via the PI3K/Akt/NF-κB signalling pathway in the progression of intervertebral disc degeneration.

Download Full-text

CGRP Regulates Nucleus Pulposus Cell Apoptosis and Inflammation via the MAPK/NF-κB Signaling Pathways during Intervertebral Disc Degeneration

Oxidative Medicine and Cellular Longevity ◽

10.1155/2021/2958584 ◽

2021 ◽

Vol 2021 ◽

pp. 1-19

Author(s):

Kaiqiang Sun ◽

Jian Zhu ◽

Chen Yan ◽

Fudong Li ◽

Fanqi Kong ◽

...

Keyword(s):

Intervertebral Disc ◽

Signaling Pathways ◽

Nucleus Pulposus ◽

Disc Degeneration ◽

Intervertebral Disc Degeneration ◽

Nucleus Pulposus Cell ◽

Mapk Signaling ◽

Discogenic Pain

Chronic low back pain (CLBP) has been proved to be the dominating cause of disability in patients with lumbar degenerative diseases. Of the various etiological factors, intervertebral disc degeneration (IVDD) has been the dominating cause. In the past few decades, the role and changes of nerve systems, especially the peripheral sensory fibers and their neurotransmitters, in the induction and progression of IVDD have attracted growing concerns. The expression of many neuropeptides, such as SP, NPY, and CGRP, in the nociceptive pathways is increased during the progression of IVDD and responsible for the discogenic pain. Here, the role of CGRP in the progression of IVDD was firstly investigated both in vitro and in vivo. Firstly, we confirmed that human degenerated intervertebral disc tissue exhibited elevated expression of CGRP and its receptor. Secondly, in vitro experiments suggested that CGRP could inhibit the proliferation and induce apoptosis in human nucleus pulposus (NP) cells, as well as promote inflammation and degenerated phenotypes through activating NF-κB and MAPK signaling pathways. Thirdly, CGRP receptor antagonist, Rimegepant, can ameliorate the adverse effects of CGRP imposed on NP cells, which were confirmed in vitro and in vivo. Our results will bring about a brand-new insight into the roles of neuromodulation in IVDD and related therapeutic attempts.

Download Full-text

Exosomes derived from human placental MSCs carrying miR-4450 inhibitor alleviate intervertebral disc degeneration and ameliorate gait disturbances via up-regulation of ZNF121

10.21203/rs.3.rs-28561/v1 ◽

2020 ◽

Author(s):

Qiling Yuan ◽

Xinyi Wang ◽

Liang Liu ◽

Yongsong Cai ◽

Xiaoming Zhao ◽

...

Keyword(s):

Intervertebral Disc ◽

Disc Degeneration ◽

Intervertebral Disc Degeneration ◽

Therapeutic Effects ◽

Nucleus Pulposus Cells ◽

Gait Abnormality ◽

Tnf Α ◽

Potential Therapeutic Role

Abstract Background Exosomes derived from mesenchymal stem cells (MSCs) have emerged as novel drug and gene delivery tools. Current study aimed to elucidate the potential therapeutic role of human placental MSC (hPLMSC)-derived exosomes carrying antagomiR-4450 (EXO-antagomiR-4450) in intervertebral disc degeneration (IDD) progression. Methods Initially, the differentially expressed miRNAs related to IDD were identified by microarray analysis which provided data predicting the interaction between miR-4450 and ZNF121 in IDD. Next, miR-4450 and ZNF121 were elevated or silenced to determine their effects on the damage of NPCs treated with TNF-α. The therapeutic effects of EXO-antagomiR-4450 on nucleus pulposus cells (NPCs) were verified both in vitro and in vivo, especially gait analysis and fluorescent molecular tomopraphy were used in live IDD mice. Results Our results revealed that miR-4450 was highly expressed, while ZNF121 was poorly expressed in IDD patients and NPCs treated with TNF-α. Furthermore, miR-4450 was identified to specifically target ZNF121. Additionally, the inhibition of miR-4450 exerted an alleviatory effect on the inflammation, apoptosis and damage of the NPCs by up-regulating ZNF121. Moreover, EXO-antagomiR-4450 retarded damage of NPCs in vitro, alleviated IDD damage and ameliorated gait abnormality in vivo. Conclusion hPLMSC-derived exosomes could be a feasible nanovehicle to deliver inhibitory oligonucleotides like antagomiR-4450 in IDD.

Download Full-text

In Vitro and in Vivo Testing of a Novel Regulatory System for Gene Therapy for Intervertebral Disc Degeneration

Spine ◽

10.1097/brs.0b013e3181ed11c1 ◽

2011 ◽

Vol 36 (10) ◽

pp. E623-E628 ◽

Cited By ~ 22

Author(s):

Gwendolyn Sowa ◽

Edward Westrick ◽

Corey Pacek ◽

Paulo Coelho ◽

Devin Patel ◽

...

Keyword(s):

Gene Therapy ◽

Intervertebral Disc ◽

Disc Degeneration ◽

Intervertebral Disc Degeneration ◽

Regulatory System ◽

In Vivo Testing

Download Full-text

Propionibacterium acnes Induces Intervertebral Disc Degeneration by Promoting iNOS/NO and COX-2/PGE2 Activation via the ROS-Dependent NF-κB Pathway

Oxidative Medicine and Cellular Longevity ◽

10.1155/2018/3692752 ◽

2018 ◽

Vol 2018 ◽

pp. 1-12 ◽

Cited By ~ 7

Author(s):

Yazhou Lin ◽

Guoqing Tang ◽

Yucheng Jiao ◽

Ye Yuan ◽

Yuehuan Zheng ◽

...

Keyword(s):

Nitric Oxide ◽

Intervertebral Disc ◽

Disc Degeneration ◽

Intervertebral Disc Degeneration ◽

Propionibacterium Acnes ◽

Intervertebral Discs ◽

Cox 2 ◽

Underlying Mechanisms

Accumulating evidence suggests that Propionibacterium acnes (P. acnes) is a novel pathogenic factor promoting intervertebral disc degeneration (IVDD). However, the underlying mechanisms by which P. acnes induces IVDD have been unclear. In this study, we quantified the severity of IVDD, as well as the expressions of inducible nitric oxide synthase (iNOS)/nitric oxide (NO) and cyclooxygenase (COX-2)/prostaglandin (PGE2) in human intervertebral discs (IVDs) infected with P. acnes. Compared with P. acnes-negative IVDs, P. acnes-positive IVDs showed increased iNOS/NO and COX-2/PGE2 activity concomitant with more severe IVDD. In order to detect the potential correlation between iNOS/NO expression, COX-2/PGE2 expression, and IVDD, we developed a P. acnes-induced IVDD rat model and found that the upregulation of iNOS/NO and COX-2/PGE2 was essential to the occurrence of P. acnes-induced IVDD. This finding was supported by the fact that the inhibition of iNOS/NO and COX-2/PGE2 activity ameliorated IVDD significantly, as evidenced by restored aggrecan and collagen II expression both in vivo and in vitro. Mechanistically, we found that P. acnes induced iNOS/NO and COX-2/PGE2 expressions via a reactive oxygen species- (ROS-) dependent NF-κB cascade. Furthermore, NADPH oxidase participated in P. acnes-induced ROS, iNOS/NO, and COX-2/PGE2 expressions. Overall, these findings further validated the involvement of P. acnes in the pathology of IVDD and provided evidence that P. acnes-induced iNOS/NO and COX-2/PGE2 activation via the ROS-dependent NF-κB pathway is likely responsible for the pathology of IVDD.

Download Full-text

Protective role of the alpha-1-antitrypsin in intervertebral disc degeneration

Journal of Orthopaedic Surgery and Research ◽

10.1186/s13018-021-02668-z ◽

2021 ◽

Vol 16 (1) ◽

Author(s):

Weikun Liu ◽

Yanfu Wang

Keyword(s):

Intervertebral Disc ◽

Disc Degeneration ◽

Intervertebral Disc Degeneration ◽

Complex Disease ◽

Protective Role ◽

Nucleus Pulposus Cells ◽

Necrosis Factor Alpha ◽

Alpha 1 Antitrypsin

Abstract Background Intervertebral disc degeneration is a complex disease with high prevalence. It suggests that cell death, senescence, and extracellular matrix degradation are involved in the pathogenesis. Alpha-1 antitrypsin (AAT), a serine protease inhibitor, was previously correlated with inflammation-related diseases. However, its function on intervertebral disc degeneration remains unclear. Methods A latex-enhanced immunoturbidimetric assay measured the serum level of AAT. Real-time polymerase chain reaction (RT-qPCR) and western blot were used to testify the expression of RNA and proteins related to cell apoptosis and the Wnt/β-catenin pathway. The animal model for intervertebral disc degeneration was built by disc puncture. The degeneration grades were analyzed by safranin o staining. Results We showed that alpha-1 antitrypsin could ameliorate intervertebral disc degeneration in vitro and in vivo. We also found that the serum alpha-1 antitrypsin level in Intervertebral disc degeneration patients is negative related to the severity of intervertebral disc degeneration. Moreover, alpha-1 antitrypsin was also showed to suppress tumor necrosis factor-alpha (TNF-α) induced WNT/β-catenin signaling pathway activation in human nucleus pulposus cells. Conclusions Our study provides evidence for AAT to serve as a potential therapeutic reagent for the treatment of intervertebral disc degeneration.

Download Full-text

Apigenin Alleviates Intervertebral Disc Degeneration via Restoring Autophagy Flux in Nucleus Pulposus Cells

Frontiers in Cell and Developmental Biology ◽

10.3389/fcell.2021.787278 ◽

2022 ◽

Vol 9 ◽

Author(s):

Chenglong Xie ◽

Yifeng Shi ◽

Zuoxi Chen ◽

Xin Zhou ◽

Peng Luo ◽

...

Keyword(s):

Intervertebral Disc ◽

Nucleus Pulposus ◽

Disc Degeneration ◽

Intervertebral Disc Degeneration ◽

Nuclear Translocation ◽

Autophagic Flux ◽

Ecm Degradation ◽

Induced Apoptosis

Oxidative stress–induced apoptosis and senescence of nucleus pulposus (NP) cells play a crucial role in the progression of intervertebral disc degeneration (IVDD). Accumulation of studies has shown that activated autophagy and enhanced autophagic flux can alleviate IVDD. In this study, we explored the effects of apigenin on IVDD in vitro and in vivo. Apigenin was found to inhibit tert-butyl hydroperoxide (TBHP)–induced apoptosis, senescence, and ECM degradation in NP cells. In addition, apigenin treatment can restore the autophagic flux blockage caused by TBHP. Mechanistically, we found that TBHP may induce autophagosome and lysosome fusion interruption and lysosomal dysfunction, while apigenin alleviates these phenomena by promoting the nuclear translocation of TFEB via the AMPK/mTOR signaling pathway. Furthermore, apigenin also exerts a protective effect against the progression of IVDD in the puncture-induced rat model. Taken together, these findings indicate that apigenin protects NP cells against TBHP-induced apoptosis, senescence, and ECM degradation via restoration of autophagic flux in vitro, and it also ameliorates IVDD progression in rats in vivo, demonstrating its potential for serving as an effective therapeutic agent for IVDD.

Download Full-text

Platelet-Derived Biomaterials Exert Chondroprotective and Chondroregenerative Effects on Diabetes Mellitus-Induced Intervertebral Disc Degeneration

Life ◽

10.3390/life11101054 ◽

2021 ◽

Vol 11 (10) ◽

pp. 1054

Author(s):

Wen-Cheng Lo ◽

Chun-Chao Chang ◽

Chun-Hao Chan ◽

Abhinay Kumar Singh ◽

Yue-Hua Deng ◽

...

Keyword(s):

Diabetes Mellitus ◽

Growth Factor ◽

Intervertebral Disc ◽

Disc Degeneration ◽

Intervertebral Disc Degeneration ◽

Transforming Growth Factor ◽

Disc Height ◽

Therapeutic Effects

Complications of diabetes mellitus (DM) range from acute to chronic conditions, leading to multiorgan disorders such as nephropathy, retinopathy, and neuropathy. However, little is known about the influence of DM on intervertebral disc degeneration (IVDD). Moreover, traditional surgical outcomes in DM patients have been found poor, and to date, no definitive alternative treatment exists for DM-induced IVDD. Recently, among various novel approaches in regenerative medicine, the concentrated platelet-derived biomaterials (PDB), which is comprised of transforming growth factor-β1 (TGF-β1), platelet-derived growth factor (PDGF), etc., have been reported as safe, biocompatible, and efficacious alternatives for various disorders. Therefore, we initially investigated the correlations between DM and IVDD, through establishing in vitro and in vivo DM models, and further evaluated the therapeutic effects of PDB in this comorbid pathology. In vitro model was established by culturing immortalized human nucleus pulposus cells (ihNPs) in high-glucose medium, whereas in vivo DM model was developed by administering streptozotocin, nicotinamide and high-fat diet to the mice. Our results revealed that DM deteriorates both ihNPs and IVD tissues, by elevating reactive oxygen species (ROS)-induced oxidative stress, inhibiting chondrogenic markers and disc height. Contrarily, PDB ameliorated IVDD by restoring cellular growth, chondrogenic markers and disc height, possibly through suppressing ROS levels. These data imply that PDB may serve as a potential chondroprotective and chondroregenerative candidate for DM-induced IVDD.

Download Full-text