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From drugs to biomaterials: a review of emerging therapeutic strategies for intervertebral disc inflammation.

ABSTRACT: Chronic low back pain (LBP) is an increasingly prevalent issue, especially among aging populations. A major underlying cause of LBP is intervertebral disc degeneration (IDD), often triggered by intervertebral disc (IVD) inflammation. Inflammation of the IVD is divided into Septic and Aseptic inflammation. Conservative therapy and surgical treatment often fail to address the root cause of IDD. Recent advances in the treatment of IVD infection and inflammation range from antibiotics and small-molecule drugs to cellular therapies, biological agents, and innovative biomaterials. This review sheds light on the complex mechanisms of IVD inflammation and physiological and biochemical processes of IDD. Furthermore, it provides an overview of recent research developments in this area, intending to identify novel therapeutic targets and guide future clinical strategies for effectively treating IVD-related conditions.

SUBMITTER: Yang S

PROVIDER: S-EPMC10861683 | biostudies-literature | 2024

REPOSITORIES: biostudies-literature

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From drugs to biomaterials: a review of emerging therapeutic strategies for intervertebral disc inflammation.

Yang Shuhan S Jing Shaoze S Wang Shanxi S Jia Fajing F

Frontiers in cellular and infection microbiology 20240130

Chronic low back pain (LBP) is an increasingly prevalent issue, especially among aging populations. A major underlying cause of LBP is intervertebral disc degeneration (IDD), often triggered by intervertebral disc (IVD) inflammation. Inflammation of the IVD is divided into Septic and Aseptic inflammation. Conservative therapy and surgical treatment often fail to address the root cause of IDD. Recent advances in the treatment of IVD infection and inflammation range from antibiotics and small-mole ...[more]

PMID: 38352058

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Project description:BackgroundIntervertebral disc degeneration(IVDD) is the primary etiology of low back pain and radicular pain. Recent studies have found that chemokines play a role in IVDD, but the underlying mechanism is largely unclear.MethodsBioinformatics analysis was employed to screen CXCL8 as the target gene. The expression levels of CXCL8 and CXCR2 were quantified using RT-qPCR, western blot(WB), immunohistochemistry(IHC), and enzyme-linked immuno-sorbent assay(ELISA). In the IVDD mouse model, X-ray images, Safranin O-fast green staining(SO-FG), IHC, and WB were conducted to assess the therapeutic effects of CXCL8 on IVDD. Reactive oxygen species (ROS) production, apoptosis of nucleus pulposus cells (NPCs), and the involvement of the NF-κB pathway were evaluated through WB, flow cytometry, immunofluorescence(IF), and Tunnel assay.ResultsIn our study, we observed that CXCL8 emerged as one of the chemokines that were up-regulated in IVDD. The mitigation of extracellular matrix degradation (ECM) and the severity of IVDD were significantly achieved by neutralizing CXCL8 or its receptor CXCR2(SB225002, CXCR2 antagonist). The release of CXCL8 from infiltrated macrophages within intervertebral discs (IVDs) was predominantly observed upon stimulation. CXCL8 exerted its effects on NPCs by inducing apoptosis and ECM degradation through the activation of CXCR2. Specifically, the formation of the CXCL8/CXCR2 complex triggered the NF-κB signaling pathway, resulting in an abnormal increase in intracellular ROS levels and ultimately contributing to the development of IVDD.ConclusionOur findings suggest that macrophage-derived CXCL8 and subsequent CXCR2 signaling play crucial roles in mediating inflammation, oxidative stress, and apoptosis in IVDD. Targeting the CXCL8/CXCR2 axis may offer promising therapeutic strategies to ameliorate IVDD.The translational potential of this articleThis study indicates that CXCL8 can effectively exacerbate the excessive apoptosis and oxidative stress of NPCs through activating the NF-κB pathway. This study may provide new potential targets for preventing and reversing IVDD.

Dataset Information

From drugs to biomaterials: a review of emerging therapeutic strategies for intervertebral disc inflammation.

Publications

From drugs to biomaterials: a review of emerging therapeutic strategies for intervertebral disc inflammation.

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