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Zhao D, Cheng Q, Geng H, Liu J, Zhang Y, Cui J, Liu C, Cheng L. Decoding Macrophage Subtypes to Engineer Modulating Hydrogels for the Alleviation of Intervertebral Disk Degeneration. Adv Sci (Weinh) 2024; 11:e2304480. [PMID: 37939288 PMCID: PMC10767410 DOI: 10.1002/advs.202304480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 09/26/2023] [Indexed: 11/10/2023]
Abstract
A major pathological basis for low back pain is intervertebral disk degeneration, which is primarily caused by the degeneration of nucleus pulposus cells due to imbalances in extracellular matrix (ECM) anabolism and catabolism. The phenotype of macrophages in the local immune microenvironment greatly influences the balance of ECM metabolism. Therefore, the control over the macrophage phenotype of the ECM is promising to repair intervertebral disk degeneration. Herein, the preparation of an injectable nanocomposite hydrogel is reported by embedding epigallocatechin-3-gallate-coated hydroxyapatite nanorods in O-carboxymethyl chitosan cross-linked with aldehyde hyaluronic acid that is capable of modulating the phenotype of macrophages. The bioactive components play a primary role in repairing the nucleus pulposus, where the hydroxyapatite nanorods can promote anabolism in the ECM through the nucleopulpogenic differentiation of mesenchymal stem cells. In addition, epigallocatechin-3-gallate can decrease catabolism in the ECM in nucleus pulposus by inducing M2 macrophage polarization, which exists in normal intervertebral disks and can alleviate degeneration. The nanocomposite hydrogel system shows promise for the minimally invasive and effective treatment of intervertebral disk degeneration by controlling anabolism and catabolism in the ECM and inhibiting the IL17 signaling pathway (M1-related pathway) in vitro and in vivo.
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Affiliation(s)
- Da‐Wang Zhao
- Department of OrthopedicsQilu Hospital of Shandong UniversityJinanShandong250012China
| | - Qian Cheng
- Key Laboratory of Colloid and Interface Chemistry of the Ministry of EducationSchool of Chemistry and Chemical EngineeringShandong UniversityJinanShandong250100China
| | - Huimin Geng
- Key Laboratory of Colloid and Interface Chemistry of the Ministry of EducationSchool of Chemistry and Chemical EngineeringShandong UniversityJinanShandong250100China
| | - Jinbo Liu
- Department of OrthopedicsQilu Hospital of Shandong UniversityJinanShandong250012China
| | - Yuanqiang Zhang
- Department of OrthopedicsQilu Hospital of Shandong UniversityJinanShandong250012China
| | - Jiwei Cui
- Key Laboratory of Colloid and Interface Chemistry of the Ministry of EducationSchool of Chemistry and Chemical EngineeringShandong UniversityJinanShandong250100China
| | - Chao Liu
- Department of Oral and Maxillofacial SurgeryQilu Hospital of Shandong UniversityJinanShandong250012China
- Department of Oral Surgery, Shanghai Key Laboratory of StomatologyNational Clinical Research Center of StomatologyNinth People's HospitalShanghai Jiao Tong University School of MedicineShanghai200011China
| | - Lei Cheng
- Department of OrthopedicsQilu Hospital of Shandong UniversityJinanShandong250012China
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Geng H, Li Z, Li Z, Zhang Y, Gao Z, Sun L, Li X, Cui J, Ni S, Hao J. Restoring neuronal iron homeostasis revitalizes neurogenesis after spinal cord injury. Proc Natl Acad Sci U S A 2023; 120:e2220300120. [PMID: 37948584 PMCID: PMC10655560 DOI: 10.1073/pnas.2220300120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Accepted: 10/06/2023] [Indexed: 11/12/2023] Open
Abstract
Spinal cord injury (SCI) can lead to iron overloading and subsequent neuronal ferroptosis, which hinders the recovery of locomotor function. However, it is still unclear whether the maintenance of neuronal iron homeostasis enables to revitalize intrinsic neurogenesis. Herein, we report the regulation of cellular iron homeostasis after SCI via the chelation of excess iron ions and modulation of the iron transportation pathway using polyphenol-based hydrogels for the revitalization of intrinsic neurogenesis. The reversed iron overloading can promote neural stem/progenitor cell differentiation into neurons and elicit the regenerative potential of newborn neurons, which is accompanied by improved axon reinnervation and remyelination. Notably, polyphenol-based hydrogels significantly increase the neurological motor scores from ~8 to 18 (out of 21) and restore the transmission of sensory and motor electrophysiological signals after SCI. Maintenance of iron homeostasis at the site of SCI using polyphenol-based hydrogels provides a promising paradigm to revitalize neurogenesis for the treatment of iron accumulation-related nervous system diseases.
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Affiliation(s)
- Huimin Geng
- Key Laboratory of Colloid and Interface Chemistry of the Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan, Shandong250100, China
- Department of Neurosurgery, Qilu Hospital of Shandong University, Institute of Brain and Brain-Inspired Science, Cheeloo College of Medicine, Shandong University, Jinan, Shandong250012, China
| | - Zhiwei Li
- Department of Neurosurgery, Qilu Hospital of Shandong University, Institute of Brain and Brain-Inspired Science, Cheeloo College of Medicine, Shandong University, Jinan, Shandong250012, China
- Shandong Key Laboratory of Brain Function Remodeling, Jinan, Shandong250117, China
| | - Zheng Li
- Department of Neurosurgery, Qilu Hospital of Shandong University, Institute of Brain and Brain-Inspired Science, Cheeloo College of Medicine, Shandong University, Jinan, Shandong250012, China
- Shandong Key Laboratory of Brain Function Remodeling, Jinan, Shandong250117, China
| | - Yuqi Zhang
- Department of Neurosurgery, Qilu Hospital of Shandong University, Institute of Brain and Brain-Inspired Science, Cheeloo College of Medicine, Shandong University, Jinan, Shandong250012, China
| | - Zhiliang Gao
- Key Laboratory of Colloid and Interface Chemistry of the Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan, Shandong250100, China
| | - Lei Sun
- Department of Endocrinology, Qilu Hospital of Shandong University, Cheeloo College of Medicine, Shandong University, Jinan, Shandong250012, China
| | - Xingang Li
- Department of Neurosurgery, Qilu Hospital of Shandong University, Institute of Brain and Brain-Inspired Science, Cheeloo College of Medicine, Shandong University, Jinan, Shandong250012, China
| | - Jiwei Cui
- Key Laboratory of Colloid and Interface Chemistry of the Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan, Shandong250100, China
| | - Shilei Ni
- Department of Neurosurgery, Qilu Hospital of Shandong University, Institute of Brain and Brain-Inspired Science, Cheeloo College of Medicine, Shandong University, Jinan, Shandong250012, China
- Shandong Key Laboratory of Brain Function Remodeling, Jinan, Shandong250117, China
| | - Jingcheng Hao
- Key Laboratory of Colloid and Interface Chemistry of the Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan, Shandong250100, China
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