Biomaterials Science
·
2022
·Vol. 10
·期 19
·5520-5534
·
IF 7.59
Xiaojuan Li,Weier Bao,Ming Liu,Jiaqi Meng,Zicheng Wang,Mingqi Sun,Liaoyun Zhang,Zhiyuan Tian
A new type of polymeric nanomicelle-based nanoagent (denoted as PT@MFH hereafter) capable of the highly sensitive release of the chemotherapeutic drug paclitaxel (PTX) upon exposure to a near-infrared (NIR) laser trigger was developed. Specifically, PTX and a photothermal polymer (T-DPPT) were encapsulated in the cavity of nanomicelles, which were constructed from an amphiphilic block copolymer (PCL-PEEP) with a lower critical solution temperature (LCST) of ∼54 °C. Owing to the unprecedented ability of the T-DPPT moiety to harvest near-infrared light, with a mass extinction coefficient at 808 nm of up to ∼80.8 L g−1 cm−1, and convert NIR light to heat, with a photothermal conversion efficiency (η) of up to ∼70%, local hyperthermia was promptly realized via irradiation from an 808 nm laser with extraordinarily low output power. This enabled remarkable contrast in the local temperature and drug release between the “silent” state (prior to phototriggering) and the “activated” state (after phototriggering). This NIR-light-activated local hyperthermia and drug release presented the basis for combined chemotherapy and photothermal therapy (PTT) in antitumor treatment and displayed superb therapeutic efficacy. This pattern together with the high spatial precision imparted by laser triggering jointly contributed to the maximum combined antitumor efficacy to the tumor, while exhibiting minimal side effects on the normal tissues, as preliminarily verified in the in vivo experiment regarding the ability of PT@MFH to efficiently inhibit tumor growth in tumor-bearing model mice.
研究领域:
药学
·
纳米技术
·
癌症治疗
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF PHARMACEUTICS
·
2023
·
IF 5.8
Xia Cao,Qi Liu,Wenwan Shi,Kai liu,Tianwen Deng,Xuedi Weng,Siting Pan,Qingtong Yu,Wenwen Deng,Jiangnan Yu,Qilong Wang,Gao Xiao,Ximing Xu
Bisdemethoxycurcumin (BDMC) is the main active ingredient that is isolated from Zingiberaceae plants, wherein it has excellent anti-tumor effects. However, insolubility in water limits its clinical application. Herein, we reported a microfluidic chip device that can load BDMC into the lipid bilayer to form BDMC thermosensitive liposome (BDMC TSL). The natural active ingredient glycyrrhizin was selected as the surfactant to improve solubility of BDMC. Particles of BDMC TSL had small size, homogenous size distribution, and enhanced cultimulative release in vitro . The anti-tumor effect of BDMC TSL on human hepatocellular carcinomas was investigated via 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide method, live/dead staining, and flowcytometry. These results showed that the formulated liposome had a strong cancer cell inhibitory, and presented a dose-dependent inhibitory effect on migration. Further mechanistic studies showed that BDMC TSL combined with mild local hyperthermia could significantly upregulate B cell lymphoma 2 associated X protein levels and decrease B cell lymphoma 2 protein levels, thereby inducing cell apoptosis. The BDMC TSL that was fabricated via microfluidic device were decomposed under mild local hyperthermia, which could beneficially enhance the anti-tumor effect of raw insoluble materials and promote translation of liposome.
研究领域:
药学
·
生物技术
·
肿瘤学
·
材料科学
·
药物递送系统
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Polymer Materials
·
2025
·
IF 4.7
Yanyan Zheng,Yueyue Xie,Xu Dong,Shulin Shen,Gensuo Zheng,Jiaqi Weng,Qinying Yan
Biofilms, which are dense bacterial aggregates that form protective adhesion layers on surfaces, are associated with chronic wound infections, severe acne, and various other bacterial infection sites. However, the increasing antibiotic resistance of bacteria within biofilms and the limited penetration capacity of conventional treatments pose significant therapeutic challenges. To address these issues, we engineered a freeze-drying microneedle system integrating indocyanine green-loaded ZIF-8/hyaluronic acid nanoparticles (ICG@ZIF@HA NPs) and graphene oxide (GO) for dual-modal phototherapy. Notably, the microneedles demonstrated robust mechanical strength, enabling penetration through 140 μm-thick Staphylococcus aureus biofilms. Subsequently, the disruption of the biofilm’s structural integrity facilitated the release of ICG@ZIF@HA NPs from the microneedle tips into deeper biofilm regions. Moreover, the nanoparticles exhibited pH-triggered release kinetics, with over 80% of ICG released at pH 5.5 within 2 h, and generated reactive oxygen species (ROS) under 808 nm near-infrared (NIR) irradiation. Meanwhile, the GO in the backing provided localized hyperthermia, reaching 55 °C within 500 s under NIR exposure. By combining ROS generation and bacterial membrane disruption, the microneedle system achieved a synergistic antimicrobial effect, effectively inhibiting bacterial growth and eliminating biofilms under NIR irradiation. Thus, this study establishes a robust foundation for integrating antimicrobial therapy with microneedle technology, offering a safer and more efficient strategy for biofilm eradication.
研究领域:
纳米医学
·
光疗
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抗菌治疗
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药物递送系统
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生物材料
·
生物膜研究
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生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Mingyu Chang,Jingcheng Lv,Lianhui Sun,Aihong Chen,Fengbo Zhang,Guangjian Fan,Zhanliang Liu,Jun Li,Hongliang Shen,Mingjun Shi,Yinong Niu,Ye Tian,Xijian Liu,Boyu Yang
Benign prostatic hyperplasia (BPH) presents a significant clinical challenge, with conventional therapies carrying substantial risks, including urinary retention, sexual dysfunction, and prolonged recovery. To address the urgent need for safer, ultra-minimally invasive alternatives, we developed a sonosensitizing nanoplatform using copper–manganese-doped mesoporous silica nanoparticles (Cu–Mn@SiO2) for ultrasound-induced sonodynamic therapy (SDT). Here, we demonstrate that this innovative strategy provides highly effective and precisely targeted therapy for BPH. In vitro studies revealed that Cu–Mn@SiO2-mediated SDT significantly amplified intracellular reactive oxygen species (ROS) generation, triggering oxeiptosis characterized by PGAM5 cleavage, mitochondrial membrane depolarization, and mitochondrial damage in both BPH-1 epithelial and WPMY-1 stromal cells. In a testosterone-induced BPH rat model, a Cu–Mn@SiO2-combined, localized SDT treatment resulted in a substantial 60% reduction in prostatic weight and a marked improvement in urinary function. Thermal imaging confirmed prostate-specific hyperthermia without affecting the surrounding tissues. Histopathology revealed reduced collagen deposition and restored glandular morphology with comprehensive biosafety assessments showing no systemic toxicity. By precisely inducing localized oxeiptosis within hyperplastic prostatic tissue via focused ultrasound activation, this Cu–Mn@SiO2-based nanoplatform represents a clinically translatable, ultra-minimally invasive therapeutic strategy offering a superior safety profile for BPH management.
研究领域:
纳米医学
·
泌尿学
·
肿瘤学
·
材料科学
·
生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）