Regenerative Biomaterials最新文献

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Cancer cell response to extrinsic and intrinsic mechanical cue: opportunities for tumor apoptosis strategies. 癌细胞对外在和内在机械线索的反应:肿瘤凋亡策略的机遇。
IF 6.7 1区 医学
Regenerative Biomaterials Pub Date : 2024-02-20 eCollection Date: 2024-01-01 DOI: 10.1093/rb/rbae016
Jun Shu, Huan Deng, Yu Zhang, Fang Wu, Jing He
{"title":"Cancer cell response to extrinsic and intrinsic mechanical cue: opportunities for tumor apoptosis strategies.","authors":"Jun Shu, Huan Deng, Yu Zhang, Fang Wu, Jing He","doi":"10.1093/rb/rbae016","DOIUrl":"10.1093/rb/rbae016","url":null,"abstract":"<p><p>Increasing studies have revealed the importance of mechanical cues in tumor progression, invasiveness and drug resistance. During malignant transformation, changes manifest in either the mechanical properties of the tissue or the cellular ability to sense and respond to mechanical signals. The major focus of the review is the subtle correlation between mechanical cues and apoptosis in tumor cells from a mechanobiology perspective. To begin, we focus on the intracellular force, examining the mechanical properties of the cell interior, and outlining the role that the cytoskeleton and intracellular organelle-mediated intracellular forces play in tumor cell apoptosis. This article also elucidates the mechanisms by which extracellular forces guide tumor cell mechanosensing, ultimately triggering the activation of the mechanotransduction pathway and impacting tumor cell apoptosis. Finally, a comprehensive examination of the present status of the design and development of anti-cancer materials targeting mechanotransduction is presented, emphasizing the underlying design principles. Furthermore, the article underscores the need to address several unresolved inquiries to enhance our comprehension of cancer therapeutics that target mechanotransduction.</p>","PeriodicalId":20929,"journal":{"name":"Regenerative Biomaterials","volume":"11 ","pages":"rbae016"},"PeriodicalIF":6.7,"publicationDate":"2024-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10932484/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140111284","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Biofouling on titanium implants: a novel formulation of poloxamer and peroxide for in situ removal of pellicle and multi-species oral biofilm. 钛植入物上的生物污垢:一种新型聚氧乙烯和过氧化物配方,用于原位清除胶粒和多物种口腔生物膜。
IF 6.7 1区 医学
Regenerative Biomaterials Pub Date : 2024-02-10 eCollection Date: 2024-01-01 DOI: 10.1093/rb/rbae014
Badra Hussain, Roger Simm, Jaime Bueno, Savvas Giannettou, Ali-Oddin Naemi, Ståle Petter Lyngstadaas, Håvard Jostein Haugen
{"title":"Biofouling on titanium implants: a novel formulation of poloxamer and peroxide for <i>in situ</i> removal of pellicle and multi-species oral biofilm.","authors":"Badra Hussain, Roger Simm, Jaime Bueno, Savvas Giannettou, Ali-Oddin Naemi, Ståle Petter Lyngstadaas, Håvard Jostein Haugen","doi":"10.1093/rb/rbae014","DOIUrl":"10.1093/rb/rbae014","url":null,"abstract":"<p><p>Eradicating biofouling from implant surfaces is essential in treating peri-implant infections, as it directly addresses the microbial source for infection and inflammation around dental implants. This controlled laboratory study examines the effectiveness of the four commercially available debridement solutions '(EDTA (Prefgel<sup>®</sup>), NaOCl (Perisolv<sup>®</sup>), H<sub>2</sub>O<sub>2</sub> (Sigma-Aldrich) and Chlorhexidine (GUM<sup>®</sup> Paroex<sup>®</sup>))' in removing the acquired pellicle, preventing pellicle re-formation and removing of a multi-species oral biofilm growing on a titanium implant surface, and compare the results with the effect of a novel formulation of a peroxide-activated 'Poloxamer gel (Nubone<sup>®</sup> Clean)'. Evaluation of pellicle removal and re-formation was conducted using scanning electron microscope (SEM), energy-dispersive X-ray spectroscopy and X-ray photoelectron spectroscopy to assess the surface morphology, elemental composition and chemical surface composition. Hydrophilicity was assessed through contact angle measurements. The multi-species biofilm model included <i>Streptococcus oralis</i>, <i>Fusobacterium nucleatum</i> and <i>Aggregatibacter actinomycetemcomitans</i>, reflecting the natural oral microbiome's complexity. Biofilm biomass was quantified using safranin staining, biofilm viability was evaluated using confocal laser scanning microscopy, and SEM was used for morphological analyses of the biofilm. Results indicated that while no single agent completely eradicated the biofilm, the 'Poloxamer gel' activated with 'H<sub>2</sub>O<sub>2</sub>' exhibited promising results. It minimized re-contamination of the pellicle by significantly lowering the contact angle, indicating enhanced hydrophilicity. This combination also showed a notable reduction in carbon contaminants, suggesting the effective removal of organic residues from the titanium surface, in addition to effectively reducing viable bacterial counts. In conclusion, the 'Poloxamer gel + H<sub>2</sub>O<sub>2</sub>' combination emerged as a promising chemical decontamination strategy for peri-implant diseases. It underlines the importance of tailoring treatment methods to the unique microbial challenges in peri-implant diseases and the necessity of combining chemical decontaminating strategies with established mechanical cleaning procedures for optimal management of peri-implant diseases.</p>","PeriodicalId":20929,"journal":{"name":"Regenerative Biomaterials","volume":"11 ","pages":"rbae014"},"PeriodicalIF":6.7,"publicationDate":"2024-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10907064/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140022491","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A strategy for mechanically integrating robust hydrogel-tissue hybrid to promote the anti-calcification and endothelialization of bioprosthetic heart valve. 以机械方式整合坚固的水凝胶-组织混合体以促进生物人工心脏瓣膜抗钙化和内皮化的策略。
IF 6.7 1区 医学
Regenerative Biomaterials Pub Date : 2024-01-30 eCollection Date: 2024-01-01 DOI: 10.1093/rb/rbae003
Haoshuang Wu, Nuoya Chen, Tiantian Zheng, Li Li, Mengyue Hu, Yumei Qin, Gaoyang Guo, Li Yang, Yunbing Wang
{"title":"A strategy for mechanically integrating robust hydrogel-tissue hybrid to promote the anti-calcification and endothelialization of bioprosthetic heart valve.","authors":"Haoshuang Wu, Nuoya Chen, Tiantian Zheng, Li Li, Mengyue Hu, Yumei Qin, Gaoyang Guo, Li Yang, Yunbing Wang","doi":"10.1093/rb/rbae003","DOIUrl":"10.1093/rb/rbae003","url":null,"abstract":"<p><p>Bioprosthetic heart valve (BHV) replacement has been the predominant treatment for severe heart valve diseases over decades. Most clinically available BHVs are crosslinked by glutaraldehyde (GLUT), while the high toxicity of residual GLUT could initiate calcification, severe thrombosis, and delayed endothelialization. Here, we construed a mechanically integrating robust hydrogel-tissue hybrid to improve the performance of BHVs. In particular, recombinant humanized collagen type III (rhCOLIII), which was precisely customized with anti-coagulant and pro-endothelialization bioactivity, was first incorporated into the polyvinyl alcohol (PVA)-based hydrogel via hydrogen bond interactions. Then, tannic acid was introduced to enhance the mechanical performance of PVA-based hydrogel and interfacial bonding between the hydrogel layer and bio-derived tissue due to the strong affinity for a wide range of substrates. <i>In vitro</i> and <i>in vivo</i> experimental results confirmed that the GLUT-crosslinked BHVs modified by the robust PVA-based hydrogel embedded rhCOLIII and TA possessed long-term anti-coagulant, accelerated endothelialization, mild inflammatory response and anti-calcification properties. Therefore, our mechanically integrating robust hydrogel-tissue hybrid strategy showed the potential to enhance the service function and prolong the service life of the BHVs after implantation.</p>","PeriodicalId":20929,"journal":{"name":"Regenerative Biomaterials","volume":"11 ","pages":"rbae003"},"PeriodicalIF":6.7,"publicationDate":"2024-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10898858/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139983632","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Antioxidant and anti-inflammatory injectable hydrogel microspheres for in situ treatment of tendinopathy. 用于原位治疗肌腱病的抗氧化和消炎注射用水凝胶微球。
IF 5.6 1区 医学
Regenerative Biomaterials Pub Date : 2024-01-30 eCollection Date: 2024-01-01 DOI: 10.1093/rb/rbae007
Qibin Han, Lang Bai, Yinhua Qian, Xiaoyu Zhang, Juan Wang, Jing Zhou, Wenguo Cui, Yuefeng Hao, Xing Yang
{"title":"Antioxidant and anti-inflammatory injectable hydrogel microspheres for <i>in situ</i> treatment of tendinopathy.","authors":"Qibin Han, Lang Bai, Yinhua Qian, Xiaoyu Zhang, Juan Wang, Jing Zhou, Wenguo Cui, Yuefeng Hao, Xing Yang","doi":"10.1093/rb/rbae007","DOIUrl":"10.1093/rb/rbae007","url":null,"abstract":"<p><p>Tendinopathy is a common disorder that causes local dysfunction and reduces quality of life. Recent research has indicated that alterations in the inflammatory microenvironment play a vital role in the pathogenesis of tendinopathy. Herein, injectable methacrylate gelatin (GelMA) microspheres (GM) were fabricated and loaded with heparin-dopamine conjugate (HDC) and hepatocyte growth factor (HGF). GM@HDC@HGF were designed to balance the inflammatory microenvironment by inhibiting oxidative stress and inflammation, thereby regulating extracellular matrix (ECM) metabolism and halting tendon degeneration. Combining growth factors with heparin was expected to improve the encapsulation rate and maintain the long-term efficacy of HGF. In addition, the catechol groups on dopamine have adhesion and antioxidant properties, allowing potential attachment at the injured site, and better function synergized with HGF. GM@HDC@HGF injected <i>in situ</i> in rat Achilles tendinopathy (AT) models significantly down-regulated oxidative stress and inflammation, and ameliorated ECM degradation. In conclusion, the multifunctional platform developed presents a promising alternative for the treatment of tendinopathy.</p>","PeriodicalId":20929,"journal":{"name":"Regenerative Biomaterials","volume":"11 ","pages":"rbae007"},"PeriodicalIF":5.6,"publicationDate":"2024-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10898336/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139983633","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Facile synthesis of Nanoparticles-Stacked Co3O4 nanoflakes with catalase-like activity for accelerating wound healing 轻松合成具有类似催化剂活性的纳米颗粒-堆叠 Co3O4 纳米片,加速伤口愈合
IF 6.7 1区 医学
Regenerative Biomaterials Pub Date : 2024-01-26 DOI: 10.1093/rb/rbae006
Yanan Huang, Wanyi Liao, Wenxuan Wang, Tingting Zhang, Yan Zhang, Lei Lu
{"title":"Facile synthesis of Nanoparticles-Stacked Co3O4 nanoflakes with catalase-like activity for accelerating wound healing","authors":"Yanan Huang, Wanyi Liao, Wenxuan Wang, Tingting Zhang, Yan Zhang, Lei Lu","doi":"10.1093/rb/rbae006","DOIUrl":"https://doi.org/10.1093/rb/rbae006","url":null,"abstract":"Delayed wound healing caused by excessive reactive oxygen species (ROS) remains a considerable challenge. In recent years, metal oxide nanozymes have gained significant attention in biomedical research. However, a comprehensive investigation of Co3O4 based nanozymes for enhancing wound healing and tissue regeneration is lacking. This study focuses on developing a facile synthesis method to produce high-stability and cost-effective Co3O4 nanoflakes (NFs) with promising catalase (CAT)-like activity to regulate the oxidative microenvironment and accelerate wound healing. The closely arranged Co3O4 nanoparticles (NPs) within the NFs structure result in a significantly larger surface area, thereby amplifying the enzymatic activity compared to commercially available Co3O4 NPs. Under physiological conditions, it was observed that Co3O4 NFs efficiently break down hydrogen peroxide (H2O2) without generating harmful radicals (·OH). Moreover, they exhibit excellent compatibility with various cells involved in wound healing, promoting fibroblast growth and protecting cells from oxidative stress. In a rat model, Co3O4 NFs facilitate both the hemostatic and proliferative phases of wound healing, consequently accelerating the process. Overall, the promising results of Co3O4 NFs highlight their potential in promoting wound healing and tissue regeneration.","PeriodicalId":20929,"journal":{"name":"Regenerative Biomaterials","volume":"275 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2024-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139589861","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Vascular endothelial cellular mechanics under hyperglycemia and its role in tissue regeneration 高血糖状态下的血管内皮细胞力学及其在组织再生中的作用
IF 6.7 1区 医学
Regenerative Biomaterials Pub Date : 2024-01-26 DOI: 10.1093/rb/rbae004
Kui Wang, Yongmei Ge, Yongshuai Yang, Zhenjian Li, Jiayi Liu, Yizebang Xue, Yuanjun Zhang, Xiangchao Pang, A H W Ngan, Bin Tang
{"title":"Vascular endothelial cellular mechanics under hyperglycemia and its role in tissue regeneration","authors":"Kui Wang, Yongmei Ge, Yongshuai Yang, Zhenjian Li, Jiayi Liu, Yizebang Xue, Yuanjun Zhang, Xiangchao Pang, A H W Ngan, Bin Tang","doi":"10.1093/rb/rbae004","DOIUrl":"https://doi.org/10.1093/rb/rbae004","url":null,"abstract":"Diabetes is one of the most prevalent diseases worldwide. The tissue regeneration of diabetes patients is known to be rather tricky as the result of vascular dysfunction, and this leads to various clinical complications including diabetic foot ulcers. The vascular endothelial cells compactly line the inner surface of blood vessels are responsible for the growth and maintenance of blood vessels, and play an essential role in tissue regeneration. Although the mechanical properties of cells are generally known to be regulated by physiological/pathological conditions, few studies have been performed to investigate vascular endothelial cellular mechanics under hyperglycemia and the biological functions related to tissue regeneration. In this study, we conduct a systematic investigation of this issue. The results suggested that the stiffness of human umbilical vein endothelial cells (HUVECs) can be significantly regulated by the glucose concentration, subsequently, leading to significant alterations in cell migration and proliferation capabilities that are closely related to tissue regeneration. The rearrangement of the cytoskeleton induced by hyperglycemia through Cdc42 was found to be one of the pathways for the alteration of the cell stiffness and the subsequent cell dysfunctions. Therefore, we suggested that the inhibition of Cdc42 might be a promising strategy to facilitate various tissue regeneration for diabetes patients.","PeriodicalId":20929,"journal":{"name":"Regenerative Biomaterials","volume":"332 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2024-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139578117","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Anisotropic microtopography surface of chitosan scaffold regulating skin precursor-derived schwann cells towards repair phenotype promotes neural regeneration 壳聚糖支架的各向异性微表层可调控皮肤前体衍生的许旺细胞,使其趋向修复表型,从而促进神经再生
IF 6.7 1区 医学
Regenerative Biomaterials Pub Date : 2024-01-24 DOI: 10.1093/rb/rbae005
Meng Cong, Xia Wu, Ling-jie Zhu, Guo-hao Gu, Fei Ding, Gui-cai Li, Hai-yan Shi
{"title":"Anisotropic microtopography surface of chitosan scaffold regulating skin precursor-derived schwann cells towards repair phenotype promotes neural regeneration","authors":"Meng Cong, Xia Wu, Ling-jie Zhu, Guo-hao Gu, Fei Ding, Gui-cai Li, Hai-yan Shi","doi":"10.1093/rb/rbae005","DOIUrl":"https://doi.org/10.1093/rb/rbae005","url":null,"abstract":"For repairing peripheral nerve and spinal cord defects, biomaterial scaffold-based cell-therapy was emerged as an effective strategy, requiring the positive response of seed cells to biomaterial substrate and environment signals. Previous work highlighted that the imposed surface properties of scaffold could provide important guidance cues to adhered cells for polarization. However, the insufficiency of native Schwann cells and unclear cellular response mechanisms remained to be addressed. Given that, this study aimed to illuminate the micropatterned chitosan-film action on the rat skin precursor-derived Schwann cells (SKP-SCs). Chitosan-film with different ridge/groove size was fabricated and applied for the SKP-SCs induction. Results indicated that SKP-SCs cultured on 30 μm size microgroove surface showed better oriented alignment phenotype. Induced SKP-SCs presented similar genic phenotype as repair Schwann cells, increasing expression of c-Jun, neural cell adhesion molecule, and neurotrophic receptor p75. Moreover, SKP-SC-secretome was subjected to cytokine array GS67 assay, data indicated the regulation of paracrine phenotype, a panel of cytokines was verified up-regulated at secreted level and gene expression level in induced SKP-SCs. These up-regulated cytokines exhibit a series of promotive neural regeneration functions, including cell survival, cell migration, cell proliferation, angiogenesis, axon growth, and cellular organization etc through bioinformatics analysis. Furthermore, the effectively polarized SKP-SCs-sourced secretome, promoted the proliferation and migration capacity of the primarily cultured native rat Schwann cells, and augmented neurites growth of the cultured motoneurons, as well as boosted axonal regrowth of the axotomy-injured motoneurons. Taken together, SKP-SCs obtained pro-neuroregeneration phenotype in adaptive response to the anisotropic topography surface of chitosan-film, displayed the oriented parallel growth, the transition towards repair Schwann cell genic phenotype, and the enhanced paracrine effect on neural regeneration. This study provided novel insights into the potency of anisotropic microtopography surface to Schwann-like cells phenotype regulation, that facilitating to provide promising engineered cell-scaffold in neural injury therapies.","PeriodicalId":20929,"journal":{"name":"Regenerative Biomaterials","volume":"329 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2024-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139589974","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Mild Synthesis of Ultra-Bright Carbon Dots with Solvatochromism for Rapid Lipid Droplet Monitoring in Varied Physiological Process 温和合成具有溶解变色功能的超亮碳点,用于在各种生理过程中快速监测脂滴
IF 6.7 1区 医学
Regenerative Biomaterials Pub Date : 2024-01-17 DOI: 10.1093/rb/rbad109
Borui Su, Dong Gao, Nini Xin, Kai Wu, Mei Yang, Shichao Jiang, Yusheng Zhang, Jie Ding, Chengheng Wu, Jing Sun, Dan Wei, Hongsong Fan, Zhenzhen Guo
{"title":"Mild Synthesis of Ultra-Bright Carbon Dots with Solvatochromism for Rapid Lipid Droplet Monitoring in Varied Physiological Process","authors":"Borui Su, Dong Gao, Nini Xin, Kai Wu, Mei Yang, Shichao Jiang, Yusheng Zhang, Jie Ding, Chengheng Wu, Jing Sun, Dan Wei, Hongsong Fan, Zhenzhen Guo","doi":"10.1093/rb/rbad109","DOIUrl":"https://doi.org/10.1093/rb/rbad109","url":null,"abstract":"Lipid droplets (LDs) participating in various cellular activities and are increasingly being emphasized. Fluorescence imaging Provides powerful tool for dynamic tracking of LDs, however, most current LDs probes remain inconsistent performance such as low Photoluminescence Quantum Yield (PLQY), poor photostability and tedious washing procedures. Herein, a novel yellow-emissive carbon dot (OT-CD) has been synthesized conveniently with high PLQY up to 90%. Besides, OT-CD exhibits remarkable amphiphilicity and solvatochromic property with lipid-water partition coefficient higher than 2, which is much higher than most LDs probes. These characters enable OT-CD high brightness, stable and wash-free LDs probing, and feasible for in vivo imaging. Then, detailed observation of LDs morphological and polarity variation dynamically in different cellular states were recorded, including ferroptosis and other diseases processes. Furthermore, fast whole imaging of zebrafish and identified LD enrichment in injured liver indicate its further feasibility for in vivo application. In contrast to the reported studies to date, this approach provides a versatile conventional synthesis system for high performance LDs targeting probes, combing the advantages of easy and high yield production, as well as robust brightness and stability for long-term imaging, facilitating investigations into organelle interactions and LD-associated diseases.","PeriodicalId":20929,"journal":{"name":"Regenerative Biomaterials","volume":"50 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2024-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139498117","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
dECM restores macrophage immune homeostasis and alleviates iron overload to promote DTPI healing. dECM 可恢复巨噬细胞的免疫平衡,减轻铁超载,从而促进 DTPI 愈合。
IF 6.7 1区 医学
Regenerative Biomaterials Pub Date : 2024-01-17 eCollection Date: 2024-01-01 DOI: 10.1093/rb/rbad118
Ju Zhang, Ruijuan Si, Yu Gao, Hui Shan, Qi Su, Zujian Feng, Pingsheng Huang, Deling Kong, Weiwei Wang
{"title":"dECM restores macrophage immune homeostasis and alleviates iron overload to promote DTPI healing.","authors":"Ju Zhang, Ruijuan Si, Yu Gao, Hui Shan, Qi Su, Zujian Feng, Pingsheng Huang, Deling Kong, Weiwei Wang","doi":"10.1093/rb/rbad118","DOIUrl":"https://doi.org/10.1093/rb/rbad118","url":null,"abstract":"<p><p>Due to its highly insidious and rapid progression, deep tissue pressure injury (DTPI) is a clinical challenge. Our previous study found that DTPI may be a skeletal muscle injury dominated by macrophage immune dysfunction due to excessive iron accumulation. Decellularized extracellular matrix (dECM) hydrogel promotes skeletal muscle injury repair. However, its role in polarizing macrophages and regulating iron metabolism in DTPI remains unclear. Here, porcine dECM hydrogel was prepared, and its therapeutic function and mechanism in repairing DTPI were investigated. The stimulus of dECM hydrogel toward RAW264.7 cells resulted in a significantly higher percentage of CD206<sup>+</sup> macrophages and notably decreased intracellular divalent iron levels. In mice DTPI model, dECM hydrogel treatment promoted M1 to M2 macrophage conversion, improved iron metabolism and reduced oxidative stress in the early stage of DTPI. In the remodeling phase, the dECM hydrogel remarkably enhanced revascularization and accelerated skeletal muscle repair. Furthermore, the immunomodulation of dECM hydrogels <i>in vivo</i> was mainly involved in the P13k/Akt signaling pathway, as revealed by GO and KEGG pathway analysis, which may ameliorate the iron deposition and promote the healing of DTPI. Our findings indicate that dECM hydrogel is promising in skeletal muscle repair, inflammation resolution and tissue injury healing by effectively restoring macrophage immune homeostasis and normalizing iron metabolism.</p>","PeriodicalId":20929,"journal":{"name":"Regenerative Biomaterials","volume":"11 ","pages":"rbad118"},"PeriodicalIF":6.7,"publicationDate":"2024-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10884736/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139973299","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Fe-Zn alloy, a new biodegradable material capable of reducing ROS and inhibiting oxidative stress 能减少 ROS 和抑制氧化应激的新型可生物降解材料--铁锌合金
IF 6.7 1区 医学
Regenerative Biomaterials Pub Date : 2024-01-13 DOI: 10.1093/rb/rbae002
Shuaikang Yang, Weiqiang Wang, Yanan Xu, Yonghui Yuan, Shengzhi Hao
{"title":"Fe-Zn alloy, a new biodegradable material capable of reducing ROS and inhibiting oxidative stress","authors":"Shuaikang Yang, Weiqiang Wang, Yanan Xu, Yonghui Yuan, Shengzhi Hao","doi":"10.1093/rb/rbae002","DOIUrl":"https://doi.org/10.1093/rb/rbae002","url":null,"abstract":"Fe-based biodegradable materials have attracted significant attention due to their exceptional mechanical properties and favorable biocompatibility. Currently, research on Fe-based materials mainly focuses on regulating the degradation rate. However, excessive release of Fe ions during material degradation will induce the generation of reactive oxygen species (ROS), leading to oxidative stress and ferroptosis. Therefore, the control of ROS release and the improvement of biocompatibility for Fe-based materials are very important. In this study, new Fe-Zn alloys were prepared by electrodeposition with the intention of using Zn as an antioxidant to reduce oxidative damage during alloy degradation. Initially, the impact of three potential degradation ions (Fe2+, Fe3+, Zn2+) from the Fe-Zn alloy on human endothelial cells’ (ECs) activity and migration ability was investigated. Subsequently, cell adhesion, cell activity, ROS production, and DNA damage were assessed at various locations surrounding the alloy. Finally, the influence of different concentrations of Zn2+ in the medium on cell viability and ROS production was evaluated. High levels of ROS exhibited evident toxic effects on ECs and promoted DNA damage. As an antioxidant, Zn2+ effectively reduced ROS production around Fe and improved the cell viability on its surface at a concentration of 0.04 mmol/L. These findings demonstrate that Fe-Zn alloy can attenuate the ROS generated from Fe degradation thereby enhancing cytocompatibility.","PeriodicalId":20929,"journal":{"name":"Regenerative Biomaterials","volume":"17 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2024-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139459856","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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