ArticleEuropean spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society2015
Pyrroloquinoline quinone protects nucleus pulposus cells from hydrogen peroxide-induced apoptosis by inhibiting the mitochondria-mediated pathway.
Article in European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 43 papers.
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43 citing papers in PubMed, 67 citations in OpenAlex.
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- Pyrroloquinoline Quinone (PQQ) Attenuates Hydrogen Peroxide-Induced Injury Through the Enhancement of Mitochondrial Function in Human Trabecular Meshwork Cells.International journal of molecular sciences · 2025Article
- Role of oxidative stress in intervertebral disc degeneration: mechanisms, pathogenesis, and therapeutic strategies.Molecular biology reports · 2025Review
- Review
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- Tetrahedral framework nucleic acids-based delivery of microRNA-155 alleviates intervertebral disc degeneration through targeting Bcl-2/Bax apoptosis pathway.Cell proliferation · 2024Article
- N-cadherin Alleviates Apoptosis and Senescence of Nucleus Pulposus Cells via Suppressing ROS-dependent ERS in the Hyper-osmolarity Microenvironment.International journal of medical sciences · 2024Article
- Custom-Made Ce-Mn Bimetallic Nanozyme for the Treatment of Intervertebral Disc Degeneration by Inhibiting Oxidative Stress and Modulating Macrophage M1/M2 Polarization.Biomaterials research · 2024Article
- Rescuing Nucleus Pulposus Cells From Senescence via Dual-Functional Greigite Nanozyme to Alleviate Intervertebral Disc Degeneration.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2023Article
- The Use of Medical Ozone in Chronic Intervertebral Disc Degeneration Can Be an Etiological and Conservative Treatment.International journal of molecular sciences · 2023Review
- Anemonin reduces hydrogen peroxide-induced oxidative stress, inflammation and extracellular matrix degradation in nucleus pulposus cells by regulating NOX4/NF-κB signaling pathway.Journal of orthopaedic surgery and research · 2023Article
- The Pivotal Role of Nrf2 Signal Axis in Intervertebral Disc Degeneration.Journal of inflammation research · 2023Review
- Mitochondrial Dysfunction in Oxidative Stress-Mediated Intervertebral Disc Degeneration.Orthopaedic surgery · 2022Review
- Targeting Oxidative Stress and Inflammation in Intervertebral Disc Degeneration: Therapeutic Perspectives of Phytochemicals.Frontiers in pharmacology · 2022Review
- The Role of Oxidative Stress in Intervertebral Disc Degeneration.Oxidative medicine and cellular longevity · 2022Review
- Innovative immune mechanisms and antioxidative therapies of intervertebral disc degeneration.Frontiers in bioengineering and biotechnology · 2022Review
- The role of ageing and oxidative stress in intervertebral disc degeneration.Frontiers in molecular biosciences · 2022Review
Corrections and comments
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Authors and funding
10 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeIntervertebral disc cell apoptosis has been suggested to play a key role in promoting disc degeneration, and many studies have shown that the mechanism may be related to oxidative stress. Pyrroloquinoline quinone (PQQ), a redox cofactor for bacterial dehydrogenases, possesses the potential to scavenge reactive oxygen species (ROS) and inhibit cell apoptosis. The objective of this study was to evaluate the effects of PQQ on cultured rat nucleus pulposus (NP) cells under conditions of oxidative injury induced by hydrogen peroxide (H2O2) and to investigate the underlying mechanisms in vitro.
methodsCell viability was determined by CCK8 assay. Changes in the apoptosis rate, intracellular ROS levels and the mitochondrial membrane potential were measured by flow cytometry. Extracellular matrix (ECM)-related proteins (collagen-2 and aggrecan) and apoptosis-related proteins (Bcl-2, Bax, cytochrome c, and caspase-3) were investigated by western blotting.
resultsThe results show that NP cells pretreated with PQQ before H2O2 exposure exhibited increased cell viability, decreased ROS formation, maintained mitochondrial membrane potential, and reduced apoptosis. In the presence of PQQ, ECM production was maintained by the cells despite being in an apoptotic environment. In addition, pretreatment with PQQ increased the expression of Bcl-2, inhibited the release of mitochondrial cytochrome c, and decreased the expressions of Bax and cleaved caspase-3.
conclusionsOur results suggest that PQQ can protect rat NP cells against oxidative stress via a mitochondria-mediated pathway. PQQ might be useful as a potential pharmaceutical agent in the prevention of intervertebral disc degeneration.
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