Acta Biomaterialia最新文献

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Regenerative medicine approaches for the treatment of spinal cord injuries: Progress and challenges 治疗脊髓损伤的再生医学方法:进展与挑战》。
IF 9.4 1区 医学
Acta Biomaterialia Pub Date : 2024-11-01 DOI: 10.1016/j.actbio.2024.10.021
Patrick C. Ralph , Sung-Woo Choi , Min Jung Baek , Sang Jin Lee
{"title":"Regenerative medicine approaches for the treatment of spinal cord injuries: Progress and challenges","authors":"Patrick C. Ralph ,&nbsp;Sung-Woo Choi ,&nbsp;Min Jung Baek ,&nbsp;Sang Jin Lee","doi":"10.1016/j.actbio.2024.10.021","DOIUrl":"10.1016/j.actbio.2024.10.021","url":null,"abstract":"<div><div>Spinal cord injury (SCI) is a profound medical condition that significantly hampers motor function, imposing substantial limitations on daily activities and exerting a considerable financial burden on patients and their families. The constrained regenerative capacity of endogenous spinal cord tissue, exacerbated by the inflammatory response following the initial trauma, poses a formidable obstacle to effective therapy. Recent advancements in the field, stem cells, biomaterials, and molecular therapy, show promising outcomes. This review provides a comprehensive analysis of tissue engineering and regenerative medicine approaches for SCI treatment, including cell transplantation, tissue-engineered construct implantation, and other potential therapeutic strategies. Additionally, it sheds light on preclinical animal studies and recent clinical trials incorporating these modalities, providing a glimpse into the evolving landscape of SCI management.</div></div><div><h3>Statement of Significance</h3><div>The investigation into spinal cord injury (SCI) treatments focuses on reducing long-term impacts by targeting scar inhibition and enhancing regeneration through stem cells, with or without growth factors. Induced pluripotent stem cells (iPSCs) show promise for autologous use, with clinical trials confirming their safety. Challenges include low cell viability and difficulty in targeted differentiation. Biomaterial scaffolds hold potential for improving cell viability and integration, and extracellular vesicles (EVs) are emerging as a novel therapy. While EV research is in its early stages, stem cell trials demonstrate safety and potential recovery. Advancing tissue engineering approaches with biomaterial scaffolds is crucial for human trials.</div></div>","PeriodicalId":237,"journal":{"name":"Acta Biomaterialia","volume":"189 ","pages":"Pages 57-72"},"PeriodicalIF":9.4,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142482767","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
Richard J. Spontak, 2025 Acta Materialia Hollomon Award Recipient 理查德-J.-斯彭塔克,2025 年《材料学报》霍罗蒙奖获得者
IF 9.4 1区 医学
Acta Biomaterialia Pub Date : 2024-11-01 DOI: 10.1016/j.actbio.2024.07.052
{"title":"Richard J. Spontak, 2025 Acta Materialia Hollomon Award Recipient","authors":"","doi":"10.1016/j.actbio.2024.07.052","DOIUrl":"10.1016/j.actbio.2024.07.052","url":null,"abstract":"","PeriodicalId":237,"journal":{"name":"Acta Biomaterialia","volume":"189 ","pages":"Pages 674-675"},"PeriodicalIF":9.4,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142657392","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
A critical review on advances and challenges of bioprinted cardiac patches 关于生物打印心脏贴片的进展与挑战的重要评论。
IF 9.4 1区 医学
Acta Biomaterialia Pub Date : 2024-11-01 DOI: 10.1016/j.actbio.2024.09.056
Xiaoqing Zhang , Guangtao Zhao , Tianyi Ma , Craig A. Simmons , J Paul Santerre
{"title":"A critical review on advances and challenges of bioprinted cardiac patches","authors":"Xiaoqing Zhang ,&nbsp;Guangtao Zhao ,&nbsp;Tianyi Ma ,&nbsp;Craig A. Simmons ,&nbsp;J Paul Santerre","doi":"10.1016/j.actbio.2024.09.056","DOIUrl":"10.1016/j.actbio.2024.09.056","url":null,"abstract":"&lt;div&gt;&lt;div&gt;Myocardial infarction (MI), which causes irreversible myocardium necrosis, affects 0.25 billion people globally and has become one of the most significant epidemics of our time. Over the past few years, bioprinting has moved beyond a concept of simply incorporating cells into biomaterials, to strategically defining the microenvironment (e.g., architecture, biomolecular signalling, mechanical stimuli, etc.) within which the cells are printed. Among the different bioprinting applications, myocardial repair is a field that has seen some of the most significant advances towards the management of the repaired tissue microenvironment. This review critically assesses the most recent biomedical innovations being carried out in cardiac patch bioprinting, with specific considerations given to the biomaterial design parameters, growth factors/cytokines, biomechanical and bioelectrical conditioning, as well as innovative biomaterial-based “4D” bioprinting (3D scaffold structure + temporal morphology changes) of myocardial tissues, immunomodulation and sustained delivery systems used in myocardium bioprinting. Key challenges include the ability to generate large quantities of cardiac cells, achieve high-density capillary networks, establish biomaterial designs that are comparable to native cardiac extracellular matrix, and manage the sophisticated systems needed for combining cardiac tissue microenvironmental cues while simultaneously establishing bioprinting technologies yielding both high-speed and precision. This must be achieved while considering quality assurance towards enabling reproducibility and clinical translation. Moreover, this manuscript thoroughly discussed the current clinical translational hurdles and regulatory issues associated with the post-bioprinting evaluation, storage, delivery and implantation of the bioprinted myocardial patches. Overall, this paper provides insights into how the clinical feasibility and important regulatory concerns may influence the design of the bioink (biomaterials, cell sources), fabrication and post-fabrication processes associated with bioprinting of the cardiac patches. This paper emphasizes that cardiac patch bioprinting requires extensive collaborations from imaging and 3D modelling technical experts, biomaterial scientists, additive manufacturing experts and healthcare professionals. Further, the work can also guide the field of cardiac patch bioprinting moving forward, by shedding light on the potential use of robotics and automation to increase productivity, reduce financial cost, and enable standardization and true commercialization of bioprinted cardiac patches.&lt;/div&gt;&lt;/div&gt;&lt;div&gt;&lt;h3&gt;Statement of significance&lt;/h3&gt;&lt;div&gt;The manuscript provides a critical review of important themes currently pursued for heart patch bioprinting, including critical biomaterial design parameters, physiologically-relevant cardiac tissue stimulations, and newly emerging cardiac tissue bioprinting strategies. This revie","PeriodicalId":237,"journal":{"name":"Acta Biomaterialia","volume":"189 ","pages":"Pages 1-24"},"PeriodicalIF":9.4,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142395893","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
Corinne E. Packard, 2025 Acta Materialia Silver Medal Award Recipient 科琳-帕卡德(Corinne E. Packard),2025 年《材料学报》银奖获得者
IF 9.4 1区 医学
Acta Biomaterialia Pub Date : 2024-11-01 DOI: 10.1016/j.actbio.2024.07.051
{"title":"Corinne E. Packard, 2025 Acta Materialia Silver Medal Award Recipient","authors":"","doi":"10.1016/j.actbio.2024.07.051","DOIUrl":"10.1016/j.actbio.2024.07.051","url":null,"abstract":"","PeriodicalId":237,"journal":{"name":"Acta Biomaterialia","volume":"189 ","pages":"Page 673"},"PeriodicalIF":9.4,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142657391","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
RECIPIENTS OF THE 2023 ACTA MATERIALIA, INC. STUDENT AWARDS Acta Materialia, Inc.学生奖
IF 9.4 1区 医学
Acta Biomaterialia Pub Date : 2024-11-01 DOI: 10.1016/j.actbio.2024.10.001
{"title":"RECIPIENTS OF THE 2023 ACTA MATERIALIA, INC. STUDENT AWARDS","authors":"","doi":"10.1016/j.actbio.2024.10.001","DOIUrl":"10.1016/j.actbio.2024.10.001","url":null,"abstract":"","PeriodicalId":237,"journal":{"name":"Acta Biomaterialia","volume":"189 ","pages":"Pages 676-677"},"PeriodicalIF":9.4,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142657393","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
Stress relaxation behavior of the transition zone in the intervertebral disc 椎间盘过渡区的应力松弛行为。
IF 9.4 1区 医学
Acta Biomaterialia Pub Date : 2024-11-01 DOI: 10.1016/j.actbio.2024.09.032
Lydia Vieira , Haim S Mordechai , Mirit Sharabi , Joanne L. Tipper , Javad Tavakoli
{"title":"Stress relaxation behavior of the transition zone in the intervertebral disc","authors":"Lydia Vieira ,&nbsp;Haim S Mordechai ,&nbsp;Mirit Sharabi ,&nbsp;Joanne L. Tipper ,&nbsp;Javad Tavakoli","doi":"10.1016/j.actbio.2024.09.032","DOIUrl":"10.1016/j.actbio.2024.09.032","url":null,"abstract":"<div><div>The stress relaxation of the TZ region, located at the interface of the Annulus Fibrosus (AF) and Nucleus Pulposus (NP) of the disc, and how its stress is relaxed compared to the adjacent regions is unknown. The current study aimed to identify the TZ stress relaxation properties under different strain magnitudes (0.2, 0.4, and 0.6 mm/mm) and compared the TZ stress relaxation characteristics to the NP and inner AF (IAF) regions at a specific strain magnitude (0.6 mm/mm). The results of the current study revealed that the TZ region exhibited different stress relaxation properties under various strain magnitudes with significantly higher initial (<em>p</em> &lt; 0.008) and reduced stresses (marginally; <em>p</em> = 0.06) at higher strains. Our experimental stress relaxation data revealed a significantly higher equilibrium stress for the IAF compared to the TZ and NP regions (<em>p</em> &lt; 0.001) but not between the TZ and NP regions (<em>p</em> = 0.7). We found that NP radial stress relaxed significantly faster (<em>p</em> &lt; 0.04) than the TZ and NP. Additionally, the current study proposed a simple mathematical model and identified that, consistent with experimental data, the overall effect of region on both the level of decayed stress and the rate at which stress is relaxed was significant (<em>p</em> &lt; 0.006). The current study found a similar stress relaxation characteristic between the NP and TZ regions, while IAF exhibited different stress relaxation properties. It is possible that this mismatch in stress relaxation acts as a shape transformation mechanism triggered by viscoelastic behavior.</div></div><div><h3>Statement of significance</h3><div>Our understanding of the biomechanical properties of the transition zone (TZ) in the IVD, a region at the interface of the Nucleus Pulposus (NP) and Annulus Fibrosus (AF), is sparse. Unfortunately, there are no current studies that investigate the TZ stress relaxation properties and how stress is relaxed in the TZ compared to the adjacent regions. For the first time, the current study characterized the stress relaxation properties of the TZ and described how the TZ stress is relaxed compared to its adjacent regions.</div></div>","PeriodicalId":237,"journal":{"name":"Acta Biomaterialia","volume":"189 ","pages":"Pages 366-376"},"PeriodicalIF":9.4,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142334140","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
Methylglyoxal alters collagen fibril nanostiffness and surface potential 甲基乙二醛改变胶原纤维的纳米硬度和表面电位
IF 9.4 1区 医学
Acta Biomaterialia Pub Date : 2024-11-01 DOI: 10.1016/j.actbio.2024.08.039
Manuel Rufin , Mathis Nalbach , Maja Rakuš , Magdalena Fuchs , Mathias Poik , Georg Schitter , Philipp J. Thurner , Orestis G. Andriotis
{"title":"Methylglyoxal alters collagen fibril nanostiffness and surface potential","authors":"Manuel Rufin ,&nbsp;Mathis Nalbach ,&nbsp;Maja Rakuš ,&nbsp;Magdalena Fuchs ,&nbsp;Mathias Poik ,&nbsp;Georg Schitter ,&nbsp;Philipp J. Thurner ,&nbsp;Orestis G. Andriotis","doi":"10.1016/j.actbio.2024.08.039","DOIUrl":"10.1016/j.actbio.2024.08.039","url":null,"abstract":"<div><div>Collagen fibrils are fundamental to the mechanical strength and function of biological tissues. However, they are susceptible to changes from non-enzymatic glycation, resulting in the formation of advanced glycation end-products (AGEs) that are not reversible. AGEs accumulate with aging and disease and can adversely impact tissue mechanics and cell-ECM interactions. AGE-crosslinks have been related, on the one hand, to dysregulation of collagen fibril stiffness and damage and, on the other hand, to altered collagen net surface charge as well as impaired cell recognition sites. While prior studies using Kelvin probe force microscopy (KPFM) have shown the effect glycation has on collagen fibril surface potential (i.e., net charge), the combined effect on individual and isolated collagen fibril mechanics, hydration, and surface potential has not been documented. Here, we explore how methylglyoxal (MGO) treatment affects the mechanics and surface potential of individual and isolated collagen fibrils by utilizing atomic force microscopy (AFM) nanoindentation and KPFM. Our results reveal that MGO treatment significantly increases nanostiffness, alters surface potential, and modifies hydration characteristics at the collagen fibril level. These findings underscore the critical impact of AGEs on collagen fibril physicochemical properties, offering insights into pathophysiological mechanical and biochemical alterations with implications for cell mechanotransduction during aging and in diabetes.</div></div><div><h3>Statement of significance</h3><div>Collagen fibrils are susceptible to glycation, the irreversible reaction of amino acids with sugars. Glycation affects the mechanical properties and surface chemistry of collagen fibrils with adverse alterations in biological tissue mechanics and cell-ECM interactions. Current research on glycation, at the level of individual collagen fibrils, is sparse and has focused either on collagen fibril mechanics, with contradicting evidence, or surface potential. Here, we utilized a multimodal approach combining Kelvin probe force (KPFM) and atomic force microscopy (AFM) to examine how methylglyoxal glycation induces structural, mechanical, and surface potential changes on the same individual and isolated collagen fibrils. This approach helps inform structure-function relationships at the level of individual collagen fibrils.</div></div>","PeriodicalId":237,"journal":{"name":"Acta Biomaterialia","volume":"189 ","pages":"Pages 208-216"},"PeriodicalIF":9.4,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142115776","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
Visceral pleura mechanics: Characterization of human, pig, and rat lung material properties 内脏胸膜力学:内脏胸膜力学:人、猪和大鼠肺材料特性的表征
IF 9.4 1区 医学
Acta Biomaterialia Pub Date : 2024-11-01 DOI: 10.1016/j.actbio.2024.09.003
Gustavo O. Ramirez , Crystal A. Mariano , David Carter , Mona Eskandari
{"title":"Visceral pleura mechanics: Characterization of human, pig, and rat lung material properties","authors":"Gustavo O. Ramirez ,&nbsp;Crystal A. Mariano ,&nbsp;David Carter ,&nbsp;Mona Eskandari","doi":"10.1016/j.actbio.2024.09.003","DOIUrl":"10.1016/j.actbio.2024.09.003","url":null,"abstract":"<div><div>Pulmonary air leaks are amongst the most common complications in lung surgery. Lung sealants are applied to the organ surface and need to synchronously stretch with the visceral pleura, the layer of tissue which encompasses the lung parenchymal tissue. These adhesives are commonly tested on pig and rat lungs, but applied to human lungs. However, the unknown mechanics of human lung visceral pleura undermines the clinical translatability of such animal-tested sealants and the absence of how pig and rat lung visceral pleura compare to human tissues is necessary to address. Here we quantify the biaxial planar tensile mechanics of visceral pleura from healthy transplant-eligible and smoker human lungs for the first time, and further compare the material behaviors to pig and rat lung visceral pleura. Initial and final stiffness moduli, maximum stress, low-to-high strain transition, and stress relaxation are analyzed and compared between and within groups, further considering regional and directional dependencies. Visceral pleura tissue from all species behave isotropically, and pig and human visceral pleura exhibits regional heterogeneity (i.e. upper versus lower lobe differences). We find that pig visceral pleura exhibits similar initial stiffness moduli and regional trends compared to human visceral pleura, suggesting pig tissue may serve as a viable animal model candidate for lung sealant testing. The outcomes and mechanical characterization of these scarce tissues enables future development of biomimetic lung sealants for improved surgical applications.</div></div><div><h3>Statement of significance</h3><div>Surgical lung sealants must synchronously deform with the underlying tissue and with each breath to minimize post-operative air leaks, which remain the most frequent complications of pulmonary intervention. These adhesives are often tested on pig and rat lungs, but applied to humans; however, the material properties of human lung visceral pleura were previously unexplored. Here, for the first time, the mechanics of human visceral pleura tissue are investigated, further contrasting rarely acquired donated lungs from healthy and smoking individuals, and additionally, comparing biaxial planar material characterizations to animal models often employed for pulmonary sealant development. This fundamental material characterization addresses key hindrances in the advancement of biomimetic sealants and evaluates the translatability of animal model experiments for clinical applications.</div></div>","PeriodicalId":237,"journal":{"name":"Acta Biomaterialia","volume":"189 ","pages":"Pages 388-398"},"PeriodicalIF":9.4,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142303144","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
Near-infrared remote triggering of bio-enzyme activation to control intestinal colonization by orally administered microorganisms 近红外远程触发生物酶激活,控制口服微生物的肠道定植。
IF 9.4 1区 医学
Acta Biomaterialia Pub Date : 2024-11-01 DOI: 10.1016/j.actbio.2024.09.044
Wei Sun , Fu Yun , Qinglu Guo , Hao-Lin Guo , Bowen Li , Guoqing Feng , Jimin Cao , Yang Bai , Bin Zheng , Xianhui Ruan
{"title":"Near-infrared remote triggering of bio-enzyme activation to control intestinal colonization by orally administered microorganisms","authors":"Wei Sun ,&nbsp;Fu Yun ,&nbsp;Qinglu Guo ,&nbsp;Hao-Lin Guo ,&nbsp;Bowen Li ,&nbsp;Guoqing Feng ,&nbsp;Jimin Cao ,&nbsp;Yang Bai ,&nbsp;Bin Zheng ,&nbsp;Xianhui Ruan","doi":"10.1016/j.actbio.2024.09.044","DOIUrl":"10.1016/j.actbio.2024.09.044","url":null,"abstract":"<div><div>Oral biotherapeutics hold significant promise, but their lack of controllability and targeting poses a major challenge, particularly for intestinal bacterial biotherapeutics. In response, we have developed a nanoencapsulation approach that responds to the release of enzyme activity in the organism and activates the enzyme in situ, allowing for controlled colonization of microbes in the gut. The nano-coating comprises a two-layer structure: an inner layer of polydopamine with photothermal and adhesive properties, and an outer layer of gelatin–sodium carboxymethylcellulose, which is hydrolyzed by cellulases in the gut following photothermal interaction with dopamine. We have successfully achieved controlled colonization of a wide range of microorganisms. Furthermore, in a diabetes model, this approach has had a profound impact on regulating glucagon-like peptide-1 (GLP-1) production, β-cell physiology, and promoting insulin secretion. This nanocoating is achieved by in situ activation of cellulase without the need for genetic or targeted molecular modification, representing a new paradigm and alternative strategy for microbial therapy. It not only enables precise and controlled colonization of probiotics but also demonstrates great potential for broader application in the field of oral biotherapy.</div></div><div><h3>Statement of significance</h3><div>We have developed a nano-encapsulation method that triggers enzyme activity in response to enzymatic activity, resulting in the controlled release and adhesion of a wide range of microorganisms in the gut. The nano coating comprises two layers: an inner layer of polydopamine with photothermal and adhesion properties, and an outer layer of a gelatin-sodium carboxymethylcellulose polymer, which can be hydrolyzed by cellulases in the intestine. Additionally, this method allows for the preparation of various microbial coatings. This approach holds significant promise for regulating GLP-1 production, the physiological function of pancreatic β-cells, and promoting insulin secretion in diabetes models.</div></div>","PeriodicalId":237,"journal":{"name":"Acta Biomaterialia","volume":"189 ","pages":"Pages 574-588"},"PeriodicalIF":9.4,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142378675","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
Biomimetic copper-containing nanogels for imaging-guided tumor chemo-chemodynamic-immunotherapy 用于成像引导的肿瘤化学-化学动力-免疫疗法的仿生含铜纳米凝胶
IF 9.4 1区 医学
Acta Biomaterialia Pub Date : 2024-11-01 DOI: 10.1016/j.actbio.2024.09.030
Mengsi Zhan , Yao Xu , Liang Jia , Hongwei Yu , Han Wang , Mingwu Shen , Xiangyang Shi
{"title":"Biomimetic copper-containing nanogels for imaging-guided tumor chemo-chemodynamic-immunotherapy","authors":"Mengsi Zhan ,&nbsp;Yao Xu ,&nbsp;Liang Jia ,&nbsp;Hongwei Yu ,&nbsp;Han Wang ,&nbsp;Mingwu Shen ,&nbsp;Xiangyang Shi","doi":"10.1016/j.actbio.2024.09.030","DOIUrl":"10.1016/j.actbio.2024.09.030","url":null,"abstract":"<div><div>Developing multifunctional nanoplatforms to comprehensively modulate the tumor microenvironment and enhance diagnostic and therapeutic outcomes still remains a great challenge. Here, we report the facile construction of a multivariate nanoplatform based on cancer cell membrane (CM)-encapsulated redox-responsive poly(N-vinylcaprolactam) (PVCL) nanogels (NGs) co-loaded with Cu(II) and chemotherapeutic drug toyocamycin (Toy) for magnetic resonance (MR) imaging-guided combination tumor chemodynamic therapy/chemoimmunotherapy. We show that redox-responsive PVCL NGs formed through precipitation polymerization can be aminated, conjugated with 3,4-dihydroxyhydrocinnamic acid for Cu(II) complexation, physically loaded with Toy, and finally camouflaged with CMs. The created ADCT@CM NGs with an average size of 113.0 nm are stable under physiological conditions and can efficiently release Cu(II) and Toy under tumor microenvironment with a high level of glutathione. Meanwhile, the developed NGs are able to enhance cancer cell oxidative stress and endoplasmic reticulum stress by synergizing the effects of chemodynamic therapy mediated by Cu-based Fenton-like reaction and Toy-mediated chemotherapy, thereby triggering significant immunogenic cell death (ICD). In a melanoma mouse model, the NGs show potent immune activation effects to reinforce tumor therapeutic efficacy through ICD induction and immune modulation including high levels of immune cytokine secretion, increased tumor infiltration of CD8<sup>+</sup> cytotoxic T cells, and reduced tumor infiltration of regulatory T cells. With the CM coating and Cu(II) loading, the developed NG platform demonstrates homologous tumor targeting and <em>T<sub>1</sub></em>-weighted MR imaging, hence providing a general biomimetic NG platform for ICD-facilitated tumor theranostic nanoplatform.</div></div><div><h3>Statement of significance</h3><div>Developing multifunctional nanoplatforms to comprehensively modulate the tumor microenvironment (TME) and enhance theranostic outcomes remains a challenge. Here, a cancer cell membrane (CM)-camouflaged nanoplatform based on aminated poly(N-vinylcaprolactam) nanogels (NGs) co-loaded with Cu(II) and toyocamycin (Toy) was prepared for magnetic resonance (MR) imaging-guided combination tumor chemodynamic therapy/chemoimmunotherapy. The tumor targeting specificity and efficient TME-triggered release of Cu(II) and Toy could enhance tumor cell oxidative stress and endoplasmic reticulum stress by synergizing the effects of chemodynamic therapy mediated by Cu-based Fenton-like reaction and Toy-mediated chemotherapy, respectively, thereby leading to significant immunogenic cell death (ICD) and immune response. With the CM coating and Cu(II) loading, the developed NG platform also demonstrates good <em>T<sub>1</sub></em>-weighted tumor MR imaging performance. Hence, this study provides a general biomimetic NG platform for ICD-facilitated tumor theranostics.</div></div>","PeriodicalId":237,"journal":{"name":"Acta Biomaterialia","volume":"189 ","pages":"Pages 491-504"},"PeriodicalIF":9.4,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142334135","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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