种子和土壤激发的水凝胶微球:一种双作用抗氧化剂和逆转椎间盘退变的细胞疗法

IF 12.8 1区 医学 Q1 ENGINEERING, BIOMEDICAL
Yilin Yang , Jiangbo Guo , Haifei Cao , Xin Tian , Hao Shen , Junjie Niu , Huilin Yang , Qin Shi , Yong Xu
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引用次数: 0

摘要

椎间盘退变(IVDD)是一种全球流行的疾病,但实现组织和功能的双重修复提出了重大挑战。考虑到活性氧(ROS)是IVDD的主要原因,并且考虑到IVDD发展过程中髓核细胞(NPCs)的减少和细胞外基质(ECM)的广泛降解,本研究受“种子-土壤”策略的启发,开发了含有NPCs的TBA@Gel&;Chs水凝胶微球。这些微球作为NPCs和ECM类似物的外源补充,为髓核修复补充“种子”和“土壤”,并加入多酚类抗氧化成分,中断氧化应激- ivdd循环,从而构建NPCs和ECM相互支持的微球系统。实验证明,TBA@Gel&;Chs在有效上调细胞内抗氧化蛋白(Sirt3和Sod2)表达的同时,表现出显著的细胞外ros清除抗氧化能力。这种双重抗氧化能力有效地保护了npc的活力和生理功能。在大鼠模型中也证实了微球对IVDD的治疗作用,发现微球能明显恢复退变椎间盘的组织结构和力学性能。此外,RNA-seq结果提供了TBA@Gel&;Chs保护npc免受氧化应激的抗氧化机制的证据。因此,本研究开发的装载npc的TBA@Gel&;Chs微球取得了优异的治疗效果,为抗氧化生物材料联合细胞疗法治疗IVDD提供了一个范例。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Seeds-and-soil inspired hydrogel microspheres: A dual-action antioxidant and cellular therapy for reversing intervertebral disc degeneration

Seeds-and-soil inspired hydrogel microspheres: A dual-action antioxidant and cellular therapy for reversing intervertebral disc degeneration
Intervertebral disc degeneration (IVDD) is a globally prevalent disease, yet achieving dual repair of tissue and function presents significant challenges. Considering reactive oxygen species (ROS) is a primary cause of IVDD, and given the decrease of nucleus pulposus cells (NPCs) and extensive degradation of extracellular matrix (ECM) during IVDD development, the present study, inspired by the “seeds-and-soil” strategy, has developed NPCs-loaded TBA@Gel&Chs hydrogel microspheres. These microspheres serve as exogenous supplements of NPCs and ECM analogs, replenishing “seeds” and “soil” for nucleus pulposus repair, and incorporating polyphenol antioxidant components to interrupt the oxidative stress-IVDD cycle, thereby constructing a microsphere system where NPCs and ECM support each other. Experiments proved that TBA@Gel&Chs exhibited significant extracellular ROS-scavenging antioxidant capabilities while effectively upregulating intracellular antioxidant proteins expression (Sirt3 and Sod2). This dual-action antioxidant capability effectively protects the vitality and physiological functions of NPCs. The therapeutic effects of microspheres on IVDD were also confirmed in rat models, which was found significantly restore histological structure and mechanical properties of degenerated discs. Additionally, RNA-seq results have provided evidences of antioxidant mechanism by which TBA@Gel&Chs protected NPCs from oxidative stress. Therefore, the NPCs-loaded TBA@Gel&Chs microspheres developed in this study have achieved excellent therapeutic effects, offering a paradigm using antioxidant biomaterials combined with cellular therapy for IVDD treatment.
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来源期刊
Biomaterials
Biomaterials 工程技术-材料科学:生物材料
CiteScore
26.00
自引率
2.90%
发文量
565
审稿时长
46 days
期刊介绍: Biomaterials is an international journal covering the science and clinical application of biomaterials. A biomaterial is now defined as a substance that has been engineered to take a form which, alone or as part of a complex system, is used to direct, by control of interactions with components of living systems, the course of any therapeutic or diagnostic procedure. It is the aim of the journal to provide a peer-reviewed forum for the publication of original papers and authoritative review and opinion papers dealing with the most important issues facing the use of biomaterials in clinical practice. The scope of the journal covers the wide range of physical, biological and chemical sciences that underpin the design of biomaterials and the clinical disciplines in which they are used. These sciences include polymer synthesis and characterization, drug and gene vector design, the biology of the host response, immunology and toxicology and self assembly at the nanoscale. Clinical applications include the therapies of medical technology and regenerative medicine in all clinical disciplines, and diagnostic systems that reply on innovative contrast and sensing agents. The journal is relevant to areas such as cancer diagnosis and therapy, implantable devices, drug delivery systems, gene vectors, bionanotechnology and tissue engineering.
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