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< Page ,Total 6 >
Bone Morphogenetic Protein-2-Derived Peptide-Conjugated Nanozyme-Integrated Photoenhanced Hybrid Hydrogel for Cascade-Regulated Bone Regeneration SCIE
期刊论文 | 2025 , 19 (15) , 14707-14726 | ACS NANO
Abstract&Keyword Cite Version(3)

Abstract :

Critical-sized bone defects present a clinical challenge due to their limited self-repair capacity. Application of bone tissue-engineering scaffolds often overlooks the dynamic modulation of the microenvironment, resulting in unsatisfactory bone-regeneration outcomes. In this study, a bone morphogenetic protein-2-derived peptide-loaded honeycomb manganese dioxide (BHM) nanozyme was incorporated into a composite hydrogel (BHM@CG) composed of l-arginine-modified methacrylated carboxymethyl chitosan and gallic acid-grafted methacrylated gelatin. This hydrogel demonstrated a cascade-regulated enhancement of hemostasis, antibacterial activity, anti-inflammatory effects, and osteogenesis. Initially, the BHM@CG hydrogel achieved rapid hemostasis by quickly adhering to irregular defects upon injury. Subsequently, it displayed robust antibacterial activity through synergistic hydrogen bonding, hydrophobic interactions, and cationic interactions. Meanwhile, the BHM nanozyme and polyphenol groups from gallic acid effectively eliminated reactive oxygen species, enabling long-term inflammation regulation. Finally, sustained release of bioactive components promoted cell migration, angiogenesis, and osteogenesis, achieving a bone-formation rate of nearly 40% in a critical-sized calvarial defect model by week 8. More interestingly, the hydrogel also demonstrated efficient antibacterial and bone-regeneration capabilities in an infected critical-sized calvarial defect model. Overall, this hydrogel dynamically modulated the bone-defect microenvironment and effectively enhanced bone regeneration, offering a promising strategy for critical-sized bone-defect repair.

Keyword :

bone regeneration bone regeneration cascade-regulation cascade-regulation hemostasis hemostasis inflammation resolution inflammation resolution nanozyme nanozyme

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GB/T 7714 Chen, Jiaxin , Zhao, Ye , Ruan, Renjie et al. Bone Morphogenetic Protein-2-Derived Peptide-Conjugated Nanozyme-Integrated Photoenhanced Hybrid Hydrogel for Cascade-Regulated Bone Regeneration [J]. | ACS NANO , 2025 , 19 (15) : 14707-14726 .
MLA Chen, Jiaxin et al. "Bone Morphogenetic Protein-2-Derived Peptide-Conjugated Nanozyme-Integrated Photoenhanced Hybrid Hydrogel for Cascade-Regulated Bone Regeneration" . | ACS NANO 19 . 15 (2025) : 14707-14726 .
APA Chen, Jiaxin , Zhao, Ye , Ruan, Renjie , Feng, Xiao , Niu, Zexuan , Pan, Lei et al. Bone Morphogenetic Protein-2-Derived Peptide-Conjugated Nanozyme-Integrated Photoenhanced Hybrid Hydrogel for Cascade-Regulated Bone Regeneration . | ACS NANO , 2025 , 19 (15) , 14707-14726 .
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Bone Morphogenetic Protein-2-Derived Peptide-Conjugated Nanozyme-Integrated Photoenhanced Hybrid Hydrogel for Cascade-Regulated Bone Regeneration Scopus
期刊论文 | 2025 , 19 (15) , 14707-14726 | ACS Nano
Bone Morphogenetic Protein-2-Derived Peptide-Conjugated Nanozyme-Integrated Photoenhanced Hybrid Hydrogel for Cascade-Regulated Bone Regeneration EI
期刊论文 | 2025 , 19 (15) , 14707-14726 | ACS Nano
Bone Morphogenetic Protein-2-Derived Peptide-Conjugated Nanozyme-Integrated Photoenhanced Hybrid Hydrogel for Cascade-Regulated Bone Regeneration Scopus
期刊论文 | 2025 | ACS Nano
Utilizing dual-responsive iridium(III) complex for hepatocellular carcinoma: Integrating photoacoustic imaging with chemotherapy and photodynamic therapy SCIE
期刊论文 | 2024 , 35 (9) | CHINESE CHEMICAL LETTERS
WoS CC Cited Count: 4
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Abstract :

Stimuli-triggered release and alleviating resistance of iridium(III)-based drugs at tumor sites remains challengeable for clinical hepatoma therapy. Herein, a doxorubicin@iridium-transferrin (DOX@IrTF) nanovesicle was synthesized by carboxylated-transferrin (TF) and doxorubicin-loaded amphiphilic iridium-amino with quaternary ammonium (QA) groups and disulfide bonds. The QA groups enhanced photophysical properties and broadened production capacity of photoinduced-reactive oxygen species (ROS), while the disulfide-bridged bonds regulated oxidative stress levels through reacting with glutathione (GSH); simultaneously, modification of TF improved recognition and endocytosis of the nanovesicle for tumor cells. Based on in -vitro results, a controlled-release behavior of DOX upon a dualresponsiveness of GSH and near-infrared ray (NIR) irradiation was presented, along with high-efficiency generation of ROS. After an intravenous injection, the nanovesicle was targeted at tumor sites, realizing TF-navigated photoacoustic imaging guidance and synergistic chemotherapy-photodynamic therapy under NIR/GSH stimulations. Overall, newly-synthesized DOX@Ir-TF nanovesicle provided a potential in subcutaneous hepatocellular carcinoma therapy due to integrations of targeting delivery, dual -stimuli responsive release, synergistic therapy strategy, and real -time monitoring. (c) 2024 Published by Elsevier B.V. on behalf of Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences.

Keyword :

Amphiphilic iridium complex Amphiphilic iridium complex NIR/GSH dual-responsiveness NIR/GSH dual-responsiveness Photoacoustic imaging Photoacoustic imaging Synergistic tumor therapy Synergistic tumor therapy Transferrin targeting Transferrin targeting

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GB/T 7714 Guo, Jinyu , Lin, Yandai , He, Shaohua et al. Utilizing dual-responsive iridium(III) complex for hepatocellular carcinoma: Integrating photoacoustic imaging with chemotherapy and photodynamic therapy [J]. | CHINESE CHEMICAL LETTERS , 2024 , 35 (9) .
MLA Guo, Jinyu et al. "Utilizing dual-responsive iridium(III) complex for hepatocellular carcinoma: Integrating photoacoustic imaging with chemotherapy and photodynamic therapy" . | CHINESE CHEMICAL LETTERS 35 . 9 (2024) .
APA Guo, Jinyu , Lin, Yandai , He, Shaohua , Chen, Yueqing , Li, Fenglu , Ruan, Renjie et al. Utilizing dual-responsive iridium(III) complex for hepatocellular carcinoma: Integrating photoacoustic imaging with chemotherapy and photodynamic therapy . | CHINESE CHEMICAL LETTERS , 2024 , 35 (9) .
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Utilizing dual-responsive iridium(III) complex for hepatocellular carcinoma: Integrating photoacoustic imaging with chemotherapy and photodynamic therapy Scopus CSCD
期刊论文 | 2024 , 35 (9) | Chinese Chemical Letters
Utilizing dual-responsive iridium(Ⅲ)complex for hepatocellular carcinoma:Integrating photoacoustic imaging with chemotherapy and photodynamic therapy
期刊论文 | 2024 , 35 (9) , 296-302 | 中国化学快报(英文版)
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Abstract :

Stimuli-triggered release and alleviating resistance of iridium(Ⅲ)-based drugs at tumor sites re-mains challengeable for clinical hepatoma therapy.Herein,a doxorubicin@iridium-transferrin(DOX@Ir-TF)nanovesicle was synthesized by carboxylated-transferrin(TF)and doxorubicin-loaded amphiphilic iridium-amino with quaternary ammonium(QA)groups and disulfide bonds.The QA groups enhanced photophysical properties and broadened production capacity of photoinduced-reactive oxygen species(ROS),while the disulfide-bridged bonds regulated oxidative stress levels through reacting with glu-tathione(GSH);simultaneously,modification of TF improved recognition and endocytosis of the nanovesi-cle for tumor cells.Based on in-vitro results,a controlled-release behavior of DOX upon a dual-responsiveness of GSH and near-infrared ray(NIR)irradiation was presented,along with high-efficiency generation of ROS.After an intravenous injection,the nanovesicle was targeted at tumor sites,realizing TF-navigated photoacoustic imaging guidance and synergistic chemotherapy-photodynamic therapy under NIR/GSH stimulations.Overall,newly-synthesized DOX@Ir-TF nanovesicle provided a potential in subcuta-neous hepatocellular carcinoma therapy due to integrations of targeting delivery,dual-stimuli responsive release,synergistic therapy strategy,and real-time monitoring.

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GB/T 7714 Jinyu Guo , Yandai Lin , Shaohua He et al. Utilizing dual-responsive iridium(Ⅲ)complex for hepatocellular carcinoma:Integrating photoacoustic imaging with chemotherapy and photodynamic therapy [J]. | 中国化学快报(英文版) , 2024 , 35 (9) : 296-302 .
MLA Jinyu Guo et al. "Utilizing dual-responsive iridium(Ⅲ)complex for hepatocellular carcinoma:Integrating photoacoustic imaging with chemotherapy and photodynamic therapy" . | 中国化学快报(英文版) 35 . 9 (2024) : 296-302 .
APA Jinyu Guo , Yandai Lin , Shaohua He , Yueqing Chen , Fenglu Li , Renjie Ruan et al. Utilizing dual-responsive iridium(Ⅲ)complex for hepatocellular carcinoma:Integrating photoacoustic imaging with chemotherapy and photodynamic therapy . | 中国化学快报(英文版) , 2024 , 35 (9) , 296-302 .
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Bionic Bilayer Scaffold for Synchronous Hyperthermia Therapy of Orthotopic Osteosarcoma and Osteochondral Regeneration SCIE
期刊论文 | 2024 , 16 (7) , 8538-8553 | ACS APPLIED MATERIALS & INTERFACES
WoS CC Cited Count: 6
Abstract&Keyword Cite Version(2)

Abstract :

Large osseous void, postsurgical neoplastic recurrence, and slow bone-cartilage repair rate raise an imperative need to develop functional scaffold in clinical osteosarcoma treatment. Herein, a bionic bilayer scaffold constituting croconaine dye-polyethylene glycol@sodium alginate hydrogel and poly(L-lactide)/hydroxyapatite polymer matrix is fabricated to simultaneously achieve a highly efficient killing of osteosarcoma and an accelerated osteochondral regeneration. First, biomimetic osteochondral structure along with adequate interfacial interaction of the bilayer scaffold provide a structural reinforcement for transverse osseointegration and osteochondral regeneration, as evidenced by upregulated specific expressions of collagen type-I, osteopontin, and runt-related transcription factor 2. Meanwhile, thermal ablation of the synthesized nanoparticles and mitochondrial dysfunction caused by continuously released hydroxyapatite induce residual tumor necrosis synergistically. To validate the capabilities of inhibiting tumor growth and promoting osteochondral regeneration of our proposed scaffold, a novel orthotopic osteosarcoma model simulating clinical treatment scenarios of bone tumors is established on rats. Based on amounts of in vitro and in vivo results, an effective killing of osteosarcoma and a suitable osteal-microenvironment modulation of such bionic bilayer composite scaffold are achieved, which provides insightful implications for photonic hyperthermia therapy against osteosarcoma and following osseous tissue regeneration.

Keyword :

bilayer scaffold bilayer scaffold biomaterials biomaterials orthotopicosteosarcoma orthotopicosteosarcoma osteochondral regeneration osteochondral regeneration photonic hyperthermiatherapy photonic hyperthermiatherapy

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GB/T 7714 Gong, Chenchi , Wang, Jun , Tang, Faqiang et al. Bionic Bilayer Scaffold for Synchronous Hyperthermia Therapy of Orthotopic Osteosarcoma and Osteochondral Regeneration [J]. | ACS APPLIED MATERIALS & INTERFACES , 2024 , 16 (7) : 8538-8553 .
MLA Gong, Chenchi et al. "Bionic Bilayer Scaffold for Synchronous Hyperthermia Therapy of Orthotopic Osteosarcoma and Osteochondral Regeneration" . | ACS APPLIED MATERIALS & INTERFACES 16 . 7 (2024) : 8538-8553 .
APA Gong, Chenchi , Wang, Jun , Tang, Faqiang , Tong, Dongmei , Wang, Ziyi , Zhou, Zijie et al. Bionic Bilayer Scaffold for Synchronous Hyperthermia Therapy of Orthotopic Osteosarcoma and Osteochondral Regeneration . | ACS APPLIED MATERIALS & INTERFACES , 2024 , 16 (7) , 8538-8553 .
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Bionic Bilayer Scaffold for Synchronous Hyperthermia Therapy of Orthotopic Osteosarcoma and Osteochondral Regeneration Scopus
期刊论文 | 2024 , 16 (7) , 8538-8553 | ACS Applied Materials and Interfaces
Bionic Bilayer Scaffold for Synchronous Hyperthermia Therapy of Orthotopic Osteosarcoma and Osteochondral Regeneration EI
期刊论文 | 2024 , 16 (7) , 8538-8553 | ACS Applied Materials and Interfaces
Predicting anti-tumor efficacy of multi-functional nanomedicine on decellularized hepatocellular carcinoma-on-a-chip SCIE
期刊论文 | 2024 , 264 | BIOSENSORS & BIOELECTRONICS
WoS CC Cited Count: 5
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Abstract :

Traditional hepatocellular carcinoma-chip models lack the cell structure and microenvironments necessary for high pathophysiological correlation, leading to low accuracy in predicting drug efficacy and high production costs. This study proposed a decellularized hepatocellular carcinoma-on-a-chip model to screen anti-tumor nanomedicine. In this model, human hepatocellular carcinoma (HepG2) and human normal liver cells (L02) were co-cultured on a three-dimensional (3D) decellularized extracellular matrix (dECM) in vitro to mimic the tumor microenvironments of human hepatocellular carcinoma in vivo. Additionally, a smart nanomedicine was developed by encapsulating doxorubicin (DOX) into the ferric oxide (Fe3O4)-incorporated liposome nanovesicle (NLV/Fe+DOX). NLV/Fe+DOX selectively killed 78.59% +/- 6.78% of HepG2 cells through targeted delivery and synergistic chemo-chemodynamic-photothermal therapies, while the viability of surrounding L02 cells on the chip model retained high, at over 90.0%. The drug efficacy tested using this unique chip model correlated well with the results of cellular and animal experiments. In summary, our proposed hepatocellular carcinoma-chip model is a low-cost yet accurate drug-testing platform with significant potential for drug screening.

Keyword :

Decellularized extracellular matrix Decellularized extracellular matrix Drug screening Drug screening Hepatocellular carcinoma-on-a-chip model Hepatocellular carcinoma-on-a-chip model Multi-functional nanomedicine Multi-functional nanomedicine Synergistic tumor therapy Synergistic tumor therapy

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GB/T 7714 Chen, Yueqing , Lin, Genhui , Wang, Ziyi et al. Predicting anti-tumor efficacy of multi-functional nanomedicine on decellularized hepatocellular carcinoma-on-a-chip [J]. | BIOSENSORS & BIOELECTRONICS , 2024 , 264 .
MLA Chen, Yueqing et al. "Predicting anti-tumor efficacy of multi-functional nanomedicine on decellularized hepatocellular carcinoma-on-a-chip" . | BIOSENSORS & BIOELECTRONICS 264 (2024) .
APA Chen, Yueqing , Lin, Genhui , Wang, Ziyi , He, Jingjing , Yang, Guanqing , Lin, Zhe et al. Predicting anti-tumor efficacy of multi-functional nanomedicine on decellularized hepatocellular carcinoma-on-a-chip . | BIOSENSORS & BIOELECTRONICS , 2024 , 264 .
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Predicting anti-tumor efficacy of multi-functional nanomedicine on decellularized hepatocellular carcinoma-on-a-chip Scopus
期刊论文 | 2024 , 264 | Biosensors and Bioelectronics
Predicting anti-tumor efficacy of multi-functional nanomedicine on decellularized hepatocellular carcinoma-on-a-chip EI
期刊论文 | 2024 , 264 | Biosensors and Bioelectronics
Strong, Antifatigue, and Ionically Conductive Organogels for High-Performance Strain Sensors SCIE
期刊论文 | 2024 , 6 (4) , 1140-1150 | ACS MATERIALS LETTERS
WoS CC Cited Count: 31
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Abstract :

Conductive organohydrogels with flexibility and biocompatibility have attracted extensive attention in bioelectronic devices. However, poor mechanical properties and crack propagation resistance have severely limited their applications. Herein, strong, tough, and ionically conductive organogels (ICOs) with outstanding fatigue resistance are prepared based on simultaneous construction of dense cross-linked polymer network with numerous crystalline domains and ionically conductive network during the solvent exchange. ICOs show excellent mechanical properties with tensile strength and elongation at break as high as 16.7 +/- 0.9 MPa and 1112.4 +/- 120.3%, respectively. Moreover, the fracture energy and fatigue threshold can reach 34.0 +/- 4.7 KJ/m(2) and 561.3 +/- 59.6 J/m(2), respectively, exhibiting outstanding crack resistant properties. ICOs with antifreezing performance are used for strain sensing with a linear working strain up to 80% and superior cycling stability, and the ICO strain sensor can monitor various body motions. The mechanically strong and antifatigue organogels show promising applications in flexible and smart electronics even in extreme environments.

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GB/T 7714 Wang, Yuqing , Wu, Yongchuan , Liu, Yuntao et al. Strong, Antifatigue, and Ionically Conductive Organogels for High-Performance Strain Sensors [J]. | ACS MATERIALS LETTERS , 2024 , 6 (4) : 1140-1150 .
MLA Wang, Yuqing et al. "Strong, Antifatigue, and Ionically Conductive Organogels for High-Performance Strain Sensors" . | ACS MATERIALS LETTERS 6 . 4 (2024) : 1140-1150 .
APA Wang, Yuqing , Wu, Yongchuan , Liu, Yuntao , Wu, Haidi , Xiao, Wei , Zhang, Hechuan et al. Strong, Antifatigue, and Ionically Conductive Organogels for High-Performance Strain Sensors . | ACS MATERIALS LETTERS , 2024 , 6 (4) , 1140-1150 .
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Strong, Antifatigue, and Ionically Conductive Organogels for High-Performance Strain Sensors EI
期刊论文 | 2024 , 6 (4) , 1140-1150 | ACS Materials Letters
Strong, Antifatigue, and Ionically Conductive Organogels for High-Performance Strain Sensors Scopus
期刊论文 | 2024 , 6 (4) , 1140-1150 | ACS Materials Letters
A Novel Superparamagnetic-Responsive Hydrogel Facilitates Disc Regeneration by Orchestrating Cell Recruitment, Proliferation, and Differentiation within Hostile Inflammatory Niche SCIE
期刊论文 | 2024 , 11 (44) | ADVANCED SCIENCE
WoS CC Cited Count: 1
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Abstract :

In situ disc regeneration is a meticulously orchestrated process, which involves cell recruitment, proliferation and differentiation within a local inflammatory niche. Thus far, it remains a challenge to establish a multi-staged regulatory framework for coordinating these cellular events, therefore leading to unsatisfactory outcome. This study constructs a super paramagnetically-responsive cellular gel, incorporating superparamagnetic iron oxide nanoparticles (SPIONs) and aptamer-modified palladium-hydrogen nanozymes (PdH-Apt) into a double-network polyacrylamide/hyaluronic acid (PAAm/HA) hydrogel. The Aptamer DB67 within magnetic hydrogel (Mag-gel) showed a high affinity for disialoganglioside (GD2), a specific membrane ligand of nucleus pulposus stem cells (NPSCs), to precisely recruit them to the injury site. The Mag-gel exhibits remarkable sensitivity to a magnetic field (MF), which exerts tunable micro/nano-scale forces on recruited NPSCs and triggers cytoskeletal remodeling, consequently boosting cell expansion in the early stage. By altering the parameters of MF, the mechanical cues within the hydrogel facilitates differentiation of NPSCs into nucleus pulposus cells to restore disc structure in the later stage. Furthermore, the PdH nanozymes within the Mag-gel mitigate the harsh inflammatory microenvironment, favoring cell survival and disc regeneration. This study presents a remote and multi-staged strategy for chronologically regulating endogenous stem cell fate, supporting disc regeneration without invasive procedures. The superparamagnetic-responsive hydrogel integrates SPIONs and aptamer-modified PdH nanozymes to selectively recruit endogenous stem cells and enhance their proliferation and differentiation through adjustable magnetic fields, while also improving the inflammatory microenvironment. This study introduces a remote and multi-staged strategy for chronologically regulating endogenous stem cell fate in endogenous regeneration. image

Keyword :

intervertebral disc regeneration intervertebral disc regeneration mechanical stimulation mechanical stimulation nucleus pulposus stem cells nucleus pulposus stem cells superparamagnetic hydrogel superparamagnetic hydrogel

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GB/T 7714 Xue, Borui , Peng, Yan , Zhang, Yongfeng et al. A Novel Superparamagnetic-Responsive Hydrogel Facilitates Disc Regeneration by Orchestrating Cell Recruitment, Proliferation, and Differentiation within Hostile Inflammatory Niche [J]. | ADVANCED SCIENCE , 2024 , 11 (44) .
MLA Xue, Borui et al. "A Novel Superparamagnetic-Responsive Hydrogel Facilitates Disc Regeneration by Orchestrating Cell Recruitment, Proliferation, and Differentiation within Hostile Inflammatory Niche" . | ADVANCED SCIENCE 11 . 44 (2024) .
APA Xue, Borui , Peng, Yan , Zhang, Yongfeng , Yang, Shijie , Zheng, Yi , Hu, Huiling et al. A Novel Superparamagnetic-Responsive Hydrogel Facilitates Disc Regeneration by Orchestrating Cell Recruitment, Proliferation, and Differentiation within Hostile Inflammatory Niche . | ADVANCED SCIENCE , 2024 , 11 (44) .
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A Novel Superparamagnetic-Responsive Hydrogel Facilitates Disc Regeneration by Orchestrating Cell Recruitment, Proliferation, and Differentiation within Hostile Inflammatory Niche Scopus
期刊论文 | 2024 , 11 (44) | Advanced Science
Engineering customized nanovaccines for enhanced cancer immunotherapy SCIE CSCD
期刊论文 | 2024 , 36 , 330-357 | BIOACTIVE MATERIALS
WoS CC Cited Count: 12
Abstract&Keyword Cite Version(1)

Abstract :

Nanovaccines have gathered significant attention for their potential to elicit tumor-specific immunological responses. Despite notable progress in tumor immunotherapy, nanovaccines still encounter considerable challenges such as low delivery efficiency, limited targeting ability, and suboptimal efficacy. With an aim of addressing these issues, engineering customized nanovaccines through modification or functionalization has emerged as a promising approach. These tailored nanovaccines not only enhance antigen presentation, but also effectively modulate immunosuppression within the tumor microenvironment. Specifically, they are distinguished by their diverse sizes, shapes, charges, structures, and unique physicochemical properties, along with targeting ligands. These features of nanovaccines facilitate lymph node accumulation and activation/regulation of immune cells. This overview of bespoke nanovaccines underscores their potential in both prophylactic and therapeutic applications, offering insights into their future development and role in cancer immunotherapy.

Keyword :

Customized structure Customized structure Enhanced cancer immunotherapy Enhanced cancer immunotherapy Nanovaccines Nanovaccines Prophylactic and therapeutic applications Prophylactic and therapeutic applications Tailored-ligand Tailored-ligand

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GB/T 7714 Guo, Jinyu , Liu, Changhua , Qi, Zhaoyang et al. Engineering customized nanovaccines for enhanced cancer immunotherapy [J]. | BIOACTIVE MATERIALS , 2024 , 36 : 330-357 .
MLA Guo, Jinyu et al. "Engineering customized nanovaccines for enhanced cancer immunotherapy" . | BIOACTIVE MATERIALS 36 (2024) : 330-357 .
APA Guo, Jinyu , Liu, Changhua , Qi, Zhaoyang , Qiu, Ting , Zhang, Jin , Yang, Huanghao . Engineering customized nanovaccines for enhanced cancer immunotherapy . | BIOACTIVE MATERIALS , 2024 , 36 , 330-357 .
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Engineering customized nanovaccines for enhanced cancer immunotherapy Scopus CSCD
期刊论文 | 2024 , 36 , 330-357 | Bioactive Materials
Functional biomaterials for modulating the dysfunctional pathological microenvironment of spinal cord injury SCIE
期刊论文 | 2024 , 39 , 521-543 | BIOACTIVE MATERIALS
WoS CC Cited Count: 10
Abstract&Keyword Cite Version(1)

Abstract :

Spinal cord injury (SCI) often results in irreversible loss of sensory and motor functions, and most SCIs are incurable with current medical practice. One of the hardest challenges in treating SCI is the development of a dysfunctional pathological microenvironment, which mainly comprises excessive inflammation, deposition of inhibitory molecules, neurotrophic factor deprivation, glial scar formation, and imbalance of vascular function. To overcome this challenge, implantation of functional biomaterials at the injury site has been regarded as a potential treatment for modulating the dysfunctional microenvironment to support axon regeneration, remyelination at injury site, and functional recovery after SCI. This review summarizes characteristics of dysfunctional pathological microenvironment and recent advances in biomaterials as well as the technologies used to modulate inflammatory microenvironment, regulate inhibitory microenvironment, and reshape revascularization microenvironment. Moreover, technological limitations, challenges, and future prospects of functional biomaterials to promote efficient repair of SCI are also discussed. This review will aid further understanding and development of functional biomaterials to regulate pathological SCI microenvironment.

Keyword :

Axon regeneration Axon regeneration Dysfunctional pathological microenvironment Dysfunctional pathological microenvironment Functional biomaterials Functional biomaterials Functional recovery Functional recovery Spinal cord injury Spinal cord injury

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GB/T 7714 Ma, Dezun , Fu, Changlong , Li, Fenglu et al. Functional biomaterials for modulating the dysfunctional pathological microenvironment of spinal cord injury [J]. | BIOACTIVE MATERIALS , 2024 , 39 : 521-543 .
MLA Ma, Dezun et al. "Functional biomaterials for modulating the dysfunctional pathological microenvironment of spinal cord injury" . | BIOACTIVE MATERIALS 39 (2024) : 521-543 .
APA Ma, Dezun , Fu, Changlong , Li, Fenglu , Ruan, Renjie , Lin, Yanming , Li, Xihai et al. Functional biomaterials for modulating the dysfunctional pathological microenvironment of spinal cord injury . | BIOACTIVE MATERIALS , 2024 , 39 , 521-543 .
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Functional biomaterials for modulating the dysfunctional pathological microenvironment of spinal cord injury Scopus CSCD
期刊论文 | 2024 , 39 , 521-543 | Bioactive Materials
Bioactive MgO/MgCO3/Polycaprolactone Multi-gradient Fibers Facilitate Peripheral Nerve Regeneration by Regulating Schwann Cell Function and Activating Wingless/Integrase-1 Signaling SCIE
期刊论文 | 2024 , 7 (1) , 315-337 | ADVANCED FIBER MATERIALS
WoS CC Cited Count: 3
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Abstract :

Peripheral nerve defects present complex orthopedic challenges with limited efficacy of clinical interventions. The inadequate proliferation and dysfunction of Schwann cells within the nerve scaffold impede the effectiveness of nerve repair. Our previous studies suggested the effectiveness of a magnesium-encapsulated bioactive hydrogel in repairing nerve defects. However, its rapid release of magnesium ions limited its efficacy to long-term nerve regeneration, and its molecular mechanism remains unclear. This study utilized electrospinning technology to fabricate a MgO/MgCO3/polycaprolactone (PCL) multi-gradient nanofiber membrane for peripheral nerve regeneration. Our findings indicated that by carefully adjusting the concentration or proportion of rapidly degradable MgO and slowly degradable MgCO3, as well as the number of electrospun layers, the multi-gradient scaffold effectively sustained the release of Mg2+ over a period of 6 weeks. Additionally, this study provided insight into the mechanism of Mg2+-induced nerve regeneration and confirmed that Mg2+ effectively promoted Schwann cell proliferation, migration, and transition to a repair phenotype. By employing transcriptome sequencing technology, the study identified the Wingless/integrase-1 (Wnt) signaling pathway as a crucial mechanism influencing Schwann cell function during nerve regeneration. After implantation in 10 mm critically sized nerve defects in rats, the MgO/MgCO3/PCL multi-gradient nanofiber combined with a 3D-engineered PCL nerve conduit showed enhanced axonal regeneration, remyelination, and reinnervation of muscle tissue 12 weeks post-surgery. In conclusion, this study successfully developed an innovative multi-gradient long-acting MgO/MgCO3/PCL nanofiber with a tunable Mg2+ release property, which underscored the molecular mechanism of magnesium-encapsulated biomaterials in treating nervous system diseases and established a robust theoretical foundation for future clinical translation.

Keyword :

Magnesium Magnesium Multi-gradient fibers Multi-gradient fibers Peripheral nerve regeneration Peripheral nerve regeneration Schwann cells Schwann cells Wnt signaling pathway Wnt signaling pathway

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GB/T 7714 Yao, Zhi , Chen, Ziyu , He, Xuan et al. Bioactive MgO/MgCO3/Polycaprolactone Multi-gradient Fibers Facilitate Peripheral Nerve Regeneration by Regulating Schwann Cell Function and Activating Wingless/Integrase-1 Signaling [J]. | ADVANCED FIBER MATERIALS , 2024 , 7 (1) : 315-337 .
MLA Yao, Zhi et al. "Bioactive MgO/MgCO3/Polycaprolactone Multi-gradient Fibers Facilitate Peripheral Nerve Regeneration by Regulating Schwann Cell Function and Activating Wingless/Integrase-1 Signaling" . | ADVANCED FIBER MATERIALS 7 . 1 (2024) : 315-337 .
APA Yao, Zhi , Chen, Ziyu , He, Xuan , Wei, Yihao , Qian, Junyu , Zong, Qiang et al. Bioactive MgO/MgCO3/Polycaprolactone Multi-gradient Fibers Facilitate Peripheral Nerve Regeneration by Regulating Schwann Cell Function and Activating Wingless/Integrase-1 Signaling . | ADVANCED FIBER MATERIALS , 2024 , 7 (1) , 315-337 .
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Bioactive MgO/MgCO3/Polycaprolactone Multi-gradient Fibers Facilitate Peripheral Nerve Regeneration by Regulating Schwann Cell Function and Activating Wingless/Integrase-1 Signaling EI
期刊论文 | 2025 , 7 (1) , 315-337 | Advanced Fiber Materials
Bioactive MgO/MgCO3/Polycaprolactone Multi-gradient Fibers Facilitate Peripheral Nerve Regeneration by Regulating Schwann Cell Function and Activating Wingless/Integrase-1 Signaling Scopus
期刊论文 | 2024 , 7 (1) , 315-337 | Advanced Fiber Materials
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