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Cheng F, Yang H, Cheng Y, Liu Y, Hai Y, Zhang Y. The role of oxidative stress in intervertebral disc cellular senescence. Front Endocrinol (Lausanne) 2022; 13:1038171. [PMID: 36561567 PMCID: PMC9763277 DOI: 10.3389/fendo.2022.1038171] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Accepted: 11/18/2022] [Indexed: 12/12/2022] Open
Abstract
With the aggravation of social aging and the increase in work intensity, the prevalence of spinal degenerative diseases caused by intervertebral disc degeneration(IDD)has increased yearly, which has driven a heavy economic burden on patients and society. It is well known that IDD is associated with cell damage and degradation of the extracellular matrix. In recent years, it has been found that IDD is induced by various mechanisms (e.g., genetic, mechanical, and exposure). Increasing evidence shows that oxidative stress is a vital activation mechanism of IDD. Reactive oxygen species (ROS) and reactive nitrogen species (RNS) could regulate matrix metabolism, proinflammatory phenotype, apoptosis, autophagy, and aging of intervertebral disc cells. However, up to now, our understanding of a series of pathophysiological mechanisms of oxidative stress involved in the occurrence, development, and treatment of IDD is still limited. In this review, we discussed the oxidative stress through its mechanisms in accelerating IDD and some antioxidant treatment measures for IDD.
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Affiliation(s)
| | | | | | - Yuzeng Liu
- *Correspondence: Yuzeng Liu, ; Yong Hai, ; ; Yangpu Zhang,
| | - Yong Hai
- *Correspondence: Yuzeng Liu, ; Yong Hai, ; ; Yangpu Zhang,
| | - Yangpu Zhang
- *Correspondence: Yuzeng Liu, ; Yong Hai, ; ; Yangpu Zhang,
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Natural Products of Pharmacology and Mechanisms in Nucleus Pulposus Cells and Intervertebral Disc Degeneration. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2021; 2021:9963677. [PMID: 34394398 PMCID: PMC8357477 DOI: 10.1155/2021/9963677] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Accepted: 07/26/2021] [Indexed: 12/23/2022]
Abstract
Intervertebral disc degeneration (IDD) is one of the main causes of low back pain (LBP), which severely reduces the quality of life and imposes a heavy financial burden on the families of affected individuals. Current research suggests that IDD is a complex cell-mediated process. Inflammation, oxidative stress, mitochondrial dysfunction, abnormal mechanical load, telomere shortening, DNA damage, and nutrient deprivation contribute to intervertebral disc cell senescence and changes in matrix metabolism, ultimately causing IDD. Natural products are widespread, structurally diverse, afford unique advantages, and exhibit great potential in terms of IDD treatment. In recent years, increasing numbers of natural ingredients have been shown to inhibit the degeneration of nucleus pulposus cells through various modes of action. Here, we review the pharmacological effects of natural products on nucleus pulposus cells and the mechanisms involved. An improved understanding of how natural products target signalling pathways will aid the development of anti-IDD drugs. This review focuses on potential IDD drugs.
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Bisson DG, Sheng K, Kocabas S, Krock E, Teles A, Saran N, Ouellet JA, Haglund L. Toll-like receptor involvement in adolescent scoliotic facet joint degeneration. J Cell Mol Med 2020; 24:11355-11365. [PMID: 32853438 PMCID: PMC7576299 DOI: 10.1111/jcmm.15733] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Accepted: 07/17/2020] [Indexed: 12/22/2022] Open
Abstract
Facet joint osteoarthritis is prevalent in young patients with adolescent idiopathic scoliosis (AIS) and might contribute to back pain. Toll-like receptors (TLR) have been linked to cartilaginous tissue degeneration but their involvement in facet joint osteoarthritis in AIS patients is still unknown. We compared baseline gene expression levels of TLRs -1, -2, -4, and -6 in scoliotic and non-scoliotic chondrocytes and found higher expression levels in scoliotic chondrocytes with significantly higher TLR2 levels. Furthermore, TLR expression correlated strongly and significantly with inflammatory and catabolic markers in scoliotic but not in non-scoliotic chondrocytes. TLR activation with a synthetic TLR2/6 agonist resulted in a robust induction and release of pro-inflammatory and catabolic factors which exacerbated proteoglycan loss in scoliotic but not in non-scoliotic cartilage. We also detected a higher abundance of alarmins including S100A8/9 and biglycan in scoliotic cartilage. Finally, the small-molecule antagonists Sparstolonin B and o-Vanillin reduced catabolism following induction with naturally occurring alarmins and the synthetic TLR2/6 agonist. The high baseline expression, robust responsiveness and strong and significant correlation with proteases and pro-inflammatory cytokines suggest that TLRs are key regulators of facet joint degeneration in AIS. Blocking their activity could therefore potentially modify disease progression.
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Affiliation(s)
- Daniel G Bisson
- Shriners Hospital for Children, Montreal, QC, Canada.,Orthopaedic Research Laboratory, Department of Orthopedic Surgery, McGill University, Montreal, QC, Canada
| | - Kai Sheng
- Shriners Hospital for Children, Montreal, QC, Canada.,Orthopaedic Research Laboratory, Department of Orthopedic Surgery, McGill University, Montreal, QC, Canada
| | - Semsi Kocabas
- Shriners Hospital for Children, Montreal, QC, Canada.,Orthopaedic Research Laboratory, Department of Orthopedic Surgery, McGill University, Montreal, QC, Canada
| | - Emerson Krock
- Orthopaedic Research Laboratory, Department of Orthopedic Surgery, McGill University, Montreal, QC, Canada
| | - Alisson Teles
- Shriners Hospital for Children, Montreal, QC, Canada
| | - Neil Saran
- Shriners Hospital for Children, Montreal, QC, Canada
| | - Jean A Ouellet
- Shriners Hospital for Children, Montreal, QC, Canada.,Orthopaedic Research Laboratory, Department of Orthopedic Surgery, McGill University, Montreal, QC, Canada
| | - Lisbet Haglund
- Shriners Hospital for Children, Montreal, QC, Canada.,Orthopaedic Research Laboratory, Department of Orthopedic Surgery, McGill University, Montreal, QC, Canada
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Zhang L, Li X, Kong X, Jin H, Han Y, Xie Y. Effects of the NF‑κB/p53 signaling pathway on intervertebral disc nucleus pulposus degeneration. Mol Med Rep 2020; 22:1821-1830. [PMID: 32705171 PMCID: PMC7411364 DOI: 10.3892/mmr.2020.11288] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Accepted: 05/28/2020] [Indexed: 02/07/2023] Open
Abstract
The incidence of intervertebral disc degeneration (IDD) is increasing, especially among elderly individuals. The present study aimed to investigate the effects of the NF-κB/p53 signaling pathway on IDD and its regulatory effect on associated cytokines. In the present study, human nucleus pulposus cells were isolated from patients with thoracic-lumbar fractures and patients with IDD to observe cellular morphology and detect phosphorylated (p)-p65/p53 expression levels. The locality and expression levels of p65 in interleukin (IL)-1β-stimulated nucleus pulposus cells, with or without the addition of ammonium pyrrolidinedithiocarbamate (PDTC; a NF-κB signaling pathway-specific blocker), were measured. Furthermore, the effects of IL-1β stimulation on the protein and gene expression levels of IDD-related cytokines were determined following p53 knockdown and inhibition of the NF-κB signaling pathway. The results suggested that p-p65 and p53 expression was significantly increased in IDD cells compared with normal nucleus pulposus cells. Moreover, nucleus pulposus cells isolated from patients with IDD contained less cytoplasm compared with normal nucleus pulposus cells, and p65 expression levels were higher in the cytoplasm than the nucleus of IL-1β-stimulated PDTC-treated healthy nucleus pulposus cells. Moreover, the p53 expression levels were significantly decreased following transfection with sip53. PDTC treatment and p53 knockdown significantly decreased matrix metallopeptidase (MMP)-3, MMP-13, metallopeptidases with thrombospondin type 1 motif (ADAMTS)-4 and ADAMTS-5 expression levels, and increased aggrecan and collagen type II expression levels in IL-1β-stimulated cells. The present study indicated that activation of the NF-κB/p53 signaling pathway might be related to the occurrence of IDD; therefore, the NF-κB/p53 signaling pathway may serve as a therapeutic target for IDD.
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Affiliation(s)
- Litao Zhang
- Department of Radiology, Taian Central Hospital, Taian, Shandong 271000, P.R. China
| | - Xiujuan Li
- Department of Radiology, Taian Central Hospital, Taian, Shandong 271000, P.R. China
| | - Xue Kong
- Department of Radiology, Taian Central Hospital, Taian, Shandong 271000, P.R. China
| | - Hua Jin
- Department of Radiology, Taian Central Hospital, Taian, Shandong 271000, P.R. China
| | - Yaoqi Han
- Department of Radiology, Taian Central Hospital, Taian, Shandong 271000, P.R. China
| | - Yuanzhong Xie
- Department of Radiology, Taian Central Hospital, Taian, Shandong 271000, P.R. China
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