{"title":"Advancements in nanohydroxyapatite: synthesis, biomedical applications and composite developments.","authors":"Rui Zhao, Xiang Meng, Zixian Pan, Yongjia Li, Hui Qian, Xiangdong Zhu, Xiao Yang, Xingdong Zhang","doi":"10.1093/rb/rbae129","DOIUrl":"10.1093/rb/rbae129","url":null,"abstract":"<p><p>Nanohydroxyapatite (nHA) is distinguished by its exceptional biocompatibility, bioactivity and biodegradability, qualities attributed to its similarity to the mineral component of human bone. This review discusses the synthesis techniques of nHA, highlighting how these methods shape its physicochemical attributes and, in turn, its utility in biomedical applications. The versatility of nHA is further enhanced by doping with biologically significant ions like magnesium or zinc, which can improve its bioactivity and confer therapeutic properties. Notably, nHA-based composites, incorporating metal, polymeric and bioceramic scaffolds, exhibit enhanced osteoconductivity and osteoinductivity. In orthopedic field, nHA and its composites serve effectively as bone graft substitutes, showing exceptional osteointegration and vascularization capabilities. In dentistry, these materials contribute to enamel remineralization, mitigate tooth sensitivity and are employed in surface modification of dental implants. For cancer therapy, nHA composites offer a promising strategy to inhibit tumor growth while sparing healthy tissues. Furthermore, nHA-based composites are emerging as sophisticated platforms with high surface ratio for the delivery of drugs and bioactive substances, gradually releasing therapeutic agents for progressive treatment benefits. Overall, this review delineates the synthesis, modifications and applications of nHA in various biomedical fields, shed light on the future advancements in biomaterials research.</p>","PeriodicalId":20929,"journal":{"name":"Regenerative Biomaterials","volume":"12 ","pages":"rbae129"},"PeriodicalIF":5.6,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11703556/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142953159","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}
Ying Fang, Yiran Han, Lu Yang, Ranjith Kumar Kankala, Shibin Wang, Aizheng Chen, Chaoping Fu
{"title":"Conductive hydrogels: intelligent dressings for monitoring and healing chronic wounds.","authors":"Ying Fang, Yiran Han, Lu Yang, Ranjith Kumar Kankala, Shibin Wang, Aizheng Chen, Chaoping Fu","doi":"10.1093/rb/rbae127","DOIUrl":"10.1093/rb/rbae127","url":null,"abstract":"<p><p>Conductive hydrogels (CHs) represent a burgeoning class of intelligent wound dressings, providing innovative strategies for chronic wound repair and monitoring. Notably, CHs excel in promoting cell migration and proliferation, exhibit powerful antibacterial and anti-inflammatory properties, and enhance collagen deposition and angiogenesis. These capabilities, combined with real-time monitoring functions, play a pivotal role in accelerating collagen synthesis, angiogenesis and continuous wound surveillance. This review delves into the preparation, mechanisms and applications of CHs in wound management, highlighting their diverse and significant advantages. It emphasizes the effectiveness of CHs in treating various chronic wounds, such as diabetic ulcers, infected wounds, temperature-related injuries and athletic joint wounds. Additionally, it explores the diverse applications of multifunctional intelligent CHs in advanced wound care technologies, encompassing self-powered dressings, electrically-triggered drug delivery, comprehensive diagnostics and therapeutics and scar-free healing. Furthermore, the review highlights the challenges to their broader implementation, explores the future of intelligent wound dressings and discusses the transformative role of CHs in chronic wound management, particularly in the context of the anticipated integration of artificial intelligence (AI). Additionally, this review underscores the challenges hindering the widespread adoption of CHs, delves into the prospects of intelligent wound dressings and elucidates the transformative impact of CHs in managing chronic wounds, especially with the forthcoming integration of AI. This integration promises to facilitate predictive analytics and tailor personalized treatment plans, thereby further refining the healing process and elevating patient satisfaction. Addressing these challenges and harnessing emerging technologies, we postulate, will establish CHs as a cornerstone in revolutionizing chronic wound care, significantly improving patient outcomes.</p>","PeriodicalId":20929,"journal":{"name":"Regenerative Biomaterials","volume":"12 ","pages":"rbae127"},"PeriodicalIF":5.6,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11703555/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142953558","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}
{"title":"Cell-microsphere based living microhybrids for osteogenesis regulating to boosting biomineralization.","authors":"Zhaofan Hu, Yunyang Zhang, Jingjing Zhang, Ran Zheng, Yang Yang, Fei Kong, Haoran Li, Xinyan Yang, Shuhui Yang, Xiangdong Kong, Ruibo Zhao","doi":"10.1093/rb/rbae125","DOIUrl":"10.1093/rb/rbae125","url":null,"abstract":"<p><p>Biomineralization-based cell-material living composites <i>ex vivo</i> showed great potential for living materials construction and cell regulation. However, cells in scaffolds with unconnected pores usually induce confined nutrient transfer and cell-cell communications, affecting the transformation of osteoblasts into osteocytes and the mineralization process. Herein, the osteoblast-materials living hybrids were constructed with porous PLLA microspheres using a rational design, in which cell-based living materials presented an improved osteoblast differentiation and mineralization model using rationally designed cell-microsphere composites. The results indicated that the microfluidic-based technique provided an efficient and highly controllable approach for producing on-demand PLLA microspheres with tiny pores (<5 μm), medium pores (5-15 μm) and large pores (>15 μm), as well as further drug delivery. Furthermore, the simvastatin (SIM)-loaded porous PLLA microsphere with ε-polylysine (ε-PL) modification was used for osteoblast (MC3T3-E1) implantation, achieving the cell-material living microhybrids, and the results demonstrated the ε-PL surface modification and SIM could improve osteoblast behavior regulation, including cell adhesion, proliferation, as well as the antibacterial effects. Both <i>in vitro</i> and <i>in vivo</i> results significantly demonstrated further cell proliferation, differentiation and cascade mineralization regulation. Then, the quantitative polymerase chain reaction or histological staining of typical markers, including collagen type I, alkaline phosphatase, runt-related transcription factor 2 and bone morphogenetic protein 2, as well as the calcium mineral deposition staining <i>in situ</i>, reconfirmed the transformation of osteoblasts into osteocytes. These achievements revealed a promising boost in osteogenesis toward mineralization at the microtissue level by cell-microsphere integration, suggesting an alternative strategy for materials-based <i>ex vivo</i> tissue construction and cell regulation, further demonstrating excellent application prospects in the field of biomineralization-based tissue regeneration.</p>","PeriodicalId":20929,"journal":{"name":"Regenerative Biomaterials","volume":"11 ","pages":"rbae125"},"PeriodicalIF":5.6,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11578599/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142682672","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}
{"title":"Nanoarchitectonics of copper sulfide nanoplating for improvement of computed tomography efficacy of bismuth oxide constructs toward drugless theranostics.","authors":"Ruo-Yin Meng, Hong-Ying Xia, Ying Zhao, Ying-Tong Ye, Shi-Bin Wang, Ai-Zheng Chen, Ranjith Kumar Kankala","doi":"10.1093/rb/rbae128","DOIUrl":"10.1093/rb/rbae128","url":null,"abstract":"<p><p>Triple-negative breast cancer (TNBC) has emerged as one of the dreadful metastatic tumors in women due to complexity, specificity and high recurrence, resulting in poor therapeutic outcomes and requiring real-time monitoring for improved theranostics. Despite the success as efficient radiosensitizers and computed tomography (CT)-based contrast agents, bismuth (Bi)-based composites suffer from poor colloidal stability, dose-dependent toxicity and pharmacokinetic shortcomings, leading to poor therapeutic monitoring. In addition, several small molecule-based therapeutics, including nanoparticle-based delivery systems, suffer from several limitations of poor therapeutic delivery and acquired multidrug resistance by cancer cells, depriving the therapeutic needs. To overcome this aspect, this study demonstrates the fabrication of drug-like/drugless nanoarchitectures based on copper sulfide-nanoplated bismuth oxide (Bi<sub>2</sub>O<sub>3</sub>@CuS, shortly BC) composites for improved theranostic efficacy against TNBC. These systematically characterized BC nanocomposites exhibited pH-/near-infrared (NIR, 808 nm) light-responsive degradability toward dual modal therapies. Due to the band transition of Cu species, the designed BC composites displayed exceptional photothermal (PTT) conversion efficiency toward localized PTT effects. In addition to pH-/NIR-responsiveness, the internally overexpressed glutathione (GSH)-responsiveness facilitated the release of Cu<sup>2+</sup> species for chemodynamic therapy (CDT)-based effects. To this end, the Bi<sup>3+</sup> species in the core could be fully hydrated in the acidic tumor microenvironment, resulting in GSH depletion and reducing CDT-induced reactive oxygen species clearance, thereby ablating tumors. The acid-responsive degradability of CuS resulted in the intratumoral enrichment of BC, demonstrating remarkable CT imaging efficacy <i>in vivo</i>. Together, these pH-/NIR-/GSH-responsive biodegradable BC composites could realize the integrated PTT/CDT/CT theranostics against breast carcinoma.</p>","PeriodicalId":20929,"journal":{"name":"Regenerative Biomaterials","volume":"11 ","pages":"rbae128"},"PeriodicalIF":5.6,"publicationDate":"2024-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11593496/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142731948","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}
You Li, Jing Wang, Ying Li, Ziqiang Luo, Tao Peng, Tao Zou
{"title":"Nanomaterials based on hollow gold nanospheres for cancer therapy.","authors":"You Li, Jing Wang, Ying Li, Ziqiang Luo, Tao Peng, Tao Zou","doi":"10.1093/rb/rbae126","DOIUrl":"10.1093/rb/rbae126","url":null,"abstract":"<p><p>Gold nanoparticles have recently been exploited as versatile nanocarriers in diagnostic and therapeutic drug delivery for cancer nanomedicine, owing to their biocompatibility, low biotoxicity, surface modifiability and plasma optical properties. A variety of gold nanoparticles have emerged for drug delivery, mainly including gold nanorods, gold nanocages, gold nanostars, gold solid nanospheres and hollow gold nanospheres (HGNs). Among these, HGNs have widely been studied for their higher photothermal conversion efficiency, wider spectral absorption range and stronger surface-enhanced Raman scattering compared with solid gold nanospheres. Therefore, nowadays, researchers prefer to use HGNs to other metal nanocarriers, which can not only play the role of controlled-release drugs but also act as photothermal agents for tumor therapy and diagnosis, due to their properties of surface modification. Combined with the Au-S bond on the surface of HGNs, the targeted preparation is loaded to achieve precise drug delivery. With the assistance of the photothermal characteristics of HGNs themselves, the efficacy of loaded drugs in HGNs is enhanced. In addition, HGNs also have vital values in the field of bioimaging, which serve as photothermal imaging agents and Raman scattering-guided preparations due to their surface-enhanced Raman scattering properties to assist researchers in achieving the purpose of tumor diagnosis. In this review, we summarize the synthesis methods of HGNs and the recent application of HGNs-based nanomaterials in the field of cancer diagnosis and therapy. In addition, the issues to be addressed were pointed out for a bright prospect of HGNs-based nanomaterials.</p>","PeriodicalId":20929,"journal":{"name":"Regenerative Biomaterials","volume":"11 ","pages":"rbae126"},"PeriodicalIF":5.6,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11631698/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142814052","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}
{"title":"Determination of DNA content as quality control in decellularized tissues: challenges and pitfalls.","authors":"Charlot Philips, Lisanne Terrie, Ewout Muylle, Lieven Thorrez","doi":"10.1093/rb/rbae123","DOIUrl":"10.1093/rb/rbae123","url":null,"abstract":"<p><p>Decellularized organs and tissues are emerging within the field of regenerative medicine to meet the growing demand for organ and tissue transplantation. Quality control of these acellular matrices prior to transplantation is of paramount importance to ensure the absence of an adverse reaction. In particular, thorough evaluation of the DNA content is essential but also poses technical challenges. Therefore, in this study, we compared different methods for quantitative and qualitative evaluation of DNA content in native and decellularized skeletal muscle tissue to identify strengths and weaknesses for each. Histological analysis revealed that Feulgen staining is more sensitive and robust than the commonly used hematoxylin-eosin and 4',6-diamidino-2-phenylindole staining for detection of remaining nuclear material. Furthermore, gel electrophoresis allowed to identify the quality and length of remaining DNA fragments. The results of the quantitative analysis indicated that direct measurement of DNA content in tissue lysates is preferred over silica-based extraction methods, since the latter resulted in the loss of small DNA fragments during extraction. Moreover, a weight loss correction factor should be implemented to take into account the impact of the decellularization on the extracellular matrix. With regard to the detection method, the results revealed that a fluorescence-based approach is more accurate than the use of UV/VIS absorbance. Through combination of the proposed methods, it should be possible to achieve a more standardized evaluation of novel acellular matrices in terms of DNA content and to enhance the predictability of clinical success.</p>","PeriodicalId":20929,"journal":{"name":"Regenerative Biomaterials","volume":"11 ","pages":"rbae123"},"PeriodicalIF":5.6,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11578598/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142682680","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}
Lei Wang, Yan Jiang, Yili Yao, Yudan Deng, Zhiqiang Liu, Jiangtao Ding, Wenwen Wang, Hao Chen, Kaihui Nan, Lingli Li
{"title":"Injectable drug-loaded thermosensitive hydrogel delivery system for protecting retina ganglion cells in traumatic optic neuropathy.","authors":"Lei Wang, Yan Jiang, Yili Yao, Yudan Deng, Zhiqiang Liu, Jiangtao Ding, Wenwen Wang, Hao Chen, Kaihui Nan, Lingli Li","doi":"10.1093/rb/rbae124","DOIUrl":"10.1093/rb/rbae124","url":null,"abstract":"<p><p>Currently, generalized therapy for traumatic optic neuropathy (TON) is lacking. Various strategies have been developed to protect and regenerate retinal ganglion cells (RGCs) after TON. Intravitreal injection of supplements has been approved as a promising approach, although serious concerns, such as low delivery efficacy and pain due to frequent injections, remain. In this study, we tested an injectable thermosensitive hydrogel drug delivery system engineered to deliver ciliary neurotrophic factor (CNTF) and triamcinolone acetonide (TA). The results of rheological studies showed that the prepared drug-loaded hydrogel possessed a suitable mechanical modulus of ∼300 Pa, consistent with that of vitreum. The hydrogel exhibited thermosensitive with sustained drug release performance. <i>In vitro</i> co-culture of the CNTF-loaded hydrogel system with primary RGCs also induced significant axon regeneration, with 38.5% increase in neurite length, indicating the regenerative response of the thermosensitive hydrogel drug delivery system. A Sprague-Dawley rat optic nerve crush model was constructed and applied to determine the neuroprotective and regenerative capacities of the system. The results demonstrated that a single intravitreal injection of the drug-loaded hydrogel (PLGA-PEG-PLGA + TA or PLGA-PEG-PLGA + CNTF) significantly increased RGC survival at both 14 and 28 days. The RGC survival rate was 31.05 ± 1.41% for the drug-loaded hydrogel system (the control group was 16.79 ± 1.50%) at Day 28. These findings suggest that the injectable drug-loaded thermosensitive hydrogel delivery system is a promising therapeutic tool for treating optic nerve degeneration.</p>","PeriodicalId":20929,"journal":{"name":"Regenerative Biomaterials","volume":"11 ","pages":"rbae124"},"PeriodicalIF":5.6,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11578600/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142682703","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}
Minrui Ji, Zaixin Yuan, Hongdong Ma, Xian Feng, Cong Ye, Lei Shi, Xiaodong Chen, Fei Han, Caichou Zhao
{"title":"Dandelion-shaped strontium-gallium microparticles for the hierarchical stimulation and comprehensive regulation of wound healing.","authors":"Minrui Ji, Zaixin Yuan, Hongdong Ma, Xian Feng, Cong Ye, Lei Shi, Xiaodong Chen, Fei Han, Caichou Zhao","doi":"10.1093/rb/rbae121","DOIUrl":"10.1093/rb/rbae121","url":null,"abstract":"<p><p>The management of full-thickness skin injuries continues to pose significant challenges. Currently, there is a dearth of comprehensive dressings capable of integrating all stages of wound healing to spatiotemporally regulate biological processes following full-thickness skin injuries. In this study, we report the synthesis of a dandelion-shaped mesoporous strontium-gallium microparticle (GE@SrTPP) achieved through dopamine-mediated strontium ion biomineralization and self-assembly, followed by functionalization with gallium metal polyphenol networks. As a multifunctional wound dressing, GE@SrTPP can release bioactive ions in a spatiotemporal manner akin to dandelion seeds. During the early stages of wound healing, GE@SrTPP demonstrates rapid and effective hemostatic performance while also exhibiting antibacterial properties. In the inflammatory phase, GE@SrTPP promotes M2 polarization of macrophages, suppresses the expression of pro-inflammatory factors, and decreases oxidative stress in wounds. Subsequently, during the stages of proliferation and tissue remodeling, GE@SrTPP facilitates angiogenesis through the activation of the Hypoxia-inducible factor-1α/vascular endothelial growth factor (HIF-1α/VEGF) pathway. Analogous to the dispersion and rooting of dandelion seeds, the root-like new blood vessels supply essential nutrients for wound healing. Ultimately, in a rat chronic wound model, GE@SrTPP achieved successful full-thickness wound repair. In summary, these dandelion-shaped GE@SrTPP microparticles demonstrate comprehensive regulatory effects in managing full-thickness wounds, making them highly promising materials for clinical applications.</p>","PeriodicalId":20929,"journal":{"name":"Regenerative Biomaterials","volume":"11 ","pages":"rbae121"},"PeriodicalIF":5.6,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11561401/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142626952","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}
{"title":"Correction to: Constructing a highly efficient multifunctional carbon quantum dot platform for the treatment of infectious wounds.","authors":"","doi":"10.1093/rb/rbae120","DOIUrl":"https://doi.org/10.1093/rb/rbae120","url":null,"abstract":"<p><p>[This corrects the article DOI: 10.1093/rb/rbae105.].</p>","PeriodicalId":20929,"journal":{"name":"Regenerative Biomaterials","volume":"11 ","pages":"rbae120"},"PeriodicalIF":5.6,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11488969/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142473342","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}
Qingqing Pan, Li Xie, Huang Zhu, Zhihui Zong, Di Wu, Rong Liu, Bin He, Yuji Pu
{"title":"Curcumin-incorporated EGCG-based nano-antioxidants alleviate colon and kidney inflammation via antioxidant and anti-inflammatory therapy.","authors":"Qingqing Pan, Li Xie, Huang Zhu, Zhihui Zong, Di Wu, Rong Liu, Bin He, Yuji Pu","doi":"10.1093/rb/rbae122","DOIUrl":"10.1093/rb/rbae122","url":null,"abstract":"<p><p>Natural remedies are gaining attention as promising approaches to alleviating inflammation, yet their full potential is often limited by challenges such as poor bioavailability and suboptimal therapeutic effects. To overcome these limitations, we have developed a novel nano-antioxidant (EK) based on epigallocatechin gallate (EGCG) aimed at enhancing the oral and systemic bioavailability, as well as the anti-inflammatory efficacy, of curcumin (Cur) in conditions such as acute colon and kidney inflammation. EK is synthesized using a straightforward Mannich reaction between EGCG and L-lysine (K), resulting in the formation of EGCG oligomers. These oligomers spontaneously self-assemble into nanoparticles with a spherical morphology and an average diameter of approximately 160 nm. <i>In vitro</i> studies reveal that EK nanoparticles exhibit remarkable radical-scavenging capabilities and effectively regulate redox processes within macrophages, a key component in the body's inflammatory response. By efficiently encapsulating curcumin within these EK nanoparticles, we create Cur@EK, a formulation that demonstrates a synergistic anti-inflammatory effect. Specifically, Cur@EK significantly reduces the levels of pro-inflammatory cytokines TNF-α and IL-6 while increasing the anti-inflammatory cytokine IL-10 in lipopolysaccharide-stimulated macrophages, highlighting its potent anti-inflammatory properties. When administered either orally or intravenously, Cur@EK shows superior bioavailability compared to free curcumin and exhibits pronounced anti-inflammatory effects in mouse models of ulcerative colitis and acute kidney injury. These findings suggest that the EK nano-antioxidant platform not only enhances the bioavailability of curcumin but also amplifies its therapeutic impact, offering a promising new avenue for the treatment and management of inflammation in both oral and systemic contexts.</p>","PeriodicalId":20929,"journal":{"name":"Regenerative Biomaterials","volume":"11 ","pages":"rbae122"},"PeriodicalIF":5.6,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11558062/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142626942","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}