CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Zixuan Wang,Wei Ran,Juan Shen,Yuanyuan Cao,Zhongzhong Wang,Simeng Zhang,Rongzhang Hao
The detection of volatile organic compounds (VOCs) markers in exhaled breath based on surface-enhanced Raman scattering (SERS) technology is expected to become a non-invasive diagnosis method for lung cancer patients. However, the inherently low Raman scattering efficiency of trace VOCs in exhaled breath, coupled with the inadequate stability and uniformity of conventional Raman substrates, has hampered the practical application of SERS technologies for lung cancer biomarker detection. Additionally, the development of nanomaterials that simultaneously exhibit superior electromagnetic enhancement capabilities and efficient molecular enrichment functions remains a significant challenge. Herein, we have reported a size-effect-driven strategy for constructing Au nanocube (Au NC) @ zeolite imidazolate framework-8 (ZIF-8) core-shell nanoparticles. Tunability of Au NC@ZIF-8 shell thickness from 3 nm to 40 nm was achieved through cetyltrimethylammonium bromide (CTAB) concentration gradient control (0.5–2 mL) and ice bath kinetics control. This method requires no harsh conditions, featuring simple operation, mild reaction, and short synthesis time, successfully fabricating thin ZIF-8 shell layers with controllable structural properties. This unique architecture integrates the strong localized surface plasmon resonance (LSPR) effect of Au NCs with the porous adsorption capability of ZIF-8, realizing ultrasensitive detection of benzaldehyde (BA) with a limit of detection (LOD) of 2.5 ppb. As a straightforward approach for synthesizing homogeneous and controllable core-shell SERS-active nanoparticles, this method not only offers valuable insights for the preparation of analogous core-shell materials but also provides a robust material foundation and technical support for the non-invasive screening of lung cancer.
研究领域:
肿瘤学
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生物医学工程
·
纳米医学
·
呼吸病学
·
分子诊断
·
转化医学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION
·
2020
·
IF 2.69
Zhentao Lei,Qiuju Tang,Yanshan Ju,Yonghui Lin,Xiaowen Bai,Haipeng Luo,Zaizai Tong
Developing the hybrid nanosystems for controlled drug release is still a challenging task. In this work, pH-responsive core-shell nanocomposites have been prepared by the growth of zeolitic imidazolate framework-8 (ZIF-8) on the surface of polymeric aggregates self-assembled from poly(ε-caprolactone)-block-poly (quaternized vinylbenzyl chloride/bipyridine) (PCL-b-q(PVBC/BPy), BCP for short) in water. The core of the micelles or the inner cavity of vesicles serves as the drug storage reservoir for the doxorubicin hydrochloride (DOX) and the ZIF-8 shells act as the gatekeepers to prevent drug premature release at physiological environment. Upon pH stimulus, the core-shell nanocomposites (BCP@ZIF-8) show a retarded drug release behavior compared with DOX-loaded polymeric aggregates counterparts (without the shell of ZIF-8). Moreover, the as-prepared nanocomposites perform good biocompatibility towards MCF-7 cell. Meanwhile, the DOX-loaded BCP@ZIF-8 nanocomposites present lower cytotoxicity compared with DOX-loaded BCP and free DOX. The confocal microscopy study shows the core-shell nanocomposites could be efficiently internalized by cancer cells, and the loaded DOX could be successfully released under acidic intracellular environment. The above result shows that the core-shell nanocomposite could be a promising candidate for pH-responsive drug delivery system in the cancer therapy.
研究领域:
材料科学
·
纳米技术
·
药物递送系统
·
生物医学工程
·
癌症治疗
✓ 已验证
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Donglin Jiang,Yuanyuan Xie,Zezhi Chen,Huijuan Gong,Huiqiang Yu,Lu Chen
Zeolitic Imidazolate Framework-8 (ZIF-8) shows potential as a carbonic anhydrase-mimicking catalyst for enhancing carbon dioxide (CO 2 ) absorption in industrial decarbonization solvents. This study synthesized ZIF-8 with high Brunauer-Emmett-Teller (BET) specific areas and their dopamine-modified hydrophilic derivatives (ZIF-8-DA) via a one-step method, aiming to maximize ZIF-8’s catalytic performance in CO₂ hydration. Both ZIF-8 and ZIF-8-DA effectively promoted CO₂ absorption in water and alkaline solvents, with excellent stability and reusability. Among them, ZIF-8-DA (220) exhibited the highest catalytic activity, achieving absorption enhancement efficiencies of 95.54% in water, 35.26% in diethanolamine (DEA) solution, and 18.42% in potassium carbonate (K₂CO₃) solution. Compared with ZIF-8, ZIF-8-DA showed better water dispersibility-a key to its higher activity. Dopamine modification significantly improved the hydrophilicity of ZIF-8, enabling stronger interactions with CO₂ in the aqueous phase and facilitating nucleophilic attack on CO₂. Importantly, the modification preserved ZIF-8’s structure, ensuring reusability across multiple absorption cycles. This research underscores that ZIF-8-DA with high BET specific area holds substantial potential as an efficient and durable carbonic anhydrase- mimicking catalyst for industrial CO₂ capture.
研究领域:
无机化学
·
催化
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环境科学
·
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
MICROCHIMICA ACTA
·
2017
·Vol. 184
·期 10
·4091-4098
·
IF 4.58
Liu Haochi,Chen Ligang,Ding Jie
The authors describe an efficient method for the extraction of tetracycline antibiotics (TCs) from water samples by using a new kind of core-shell adsorbent. It consists of a magnetite (Fe 3 O 4 ) core and a metal-organic framework (type ZIF-8) as the shell. The sorbent has a large specific surface and superparamagnetic response. The sorbent was characterized by transmission electron microscopy, X-ray photoelectron spectroscopy, nitrogen adsorption, and X-ray diffraction. The adsorption isotherms, dynamic adsorption, and mechanisms of interactions between tetracycline and sorbent were studied. Various parameters affecting the extraction efficiency were optimized. Following desorption of the TCs with methanol (containing 1% of acetic acid), they were quantified by using ultra-high performance liquid chromatography combined with mass spectrometry. The method has a linear range that extends from 0.5 to 50 ng·L −1 , and the limits of detection for tetracycline, chlortetracycline, and oxytetracycline are 0.125, 0.122 and 0.143 ng·L −1 , respectively. The relative standard deviations of intra-day and inter-day assays range from 3.3% to 8.5%, and from 2.8% to 8.3%, respectively. The recoveries of TCs (at spiking levels of 0.5, 5.0 and 50 ng·L −1 ) are in the range between 78.3% and 93.7%. The method was successfully applied to the determination of TCs in spiked river water, fish pond water, and livestock wastewater.
研究领域:
环境科学
·
分析化学
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2017
·Vol. 53
·期 4
·2351-2361
·
IF 2.599
Song Mei-Ru,Li Dong-Yao,Nian Fu-Yu,Xue Jin-Ping,Chen Juan-Juan
To improve the aqueous solubility and cancer targeting of the photosensitizers in photodynamic therapy (PDT), we encapsulated the photosensitizer in a biocompatibility and pH-sensitive drug delivery system, zeolitic imidazolate frameworks-8 (ZIF-8) nanospheres. Powder X-ray diffraction and electron microscopy show that our nanospheres are uniform and single-crystalline particles. Owing to the cleavage of zinc–ligand coordination bonds, more ZnPc–COOH were released much faster in the mild acidic conditions (pH 5.0 and 6.0) in comparison with physiological environment (pH 7.4). By incorporating ZnPc–COOH in ZIF-8, our nanospheres exhibited high singlet oxygen quantum yield and intracellular ROS generation. Cell viability experiments toward HepG2 cells demonstrated the low toxicity of ZIF-8 and the good anticancer efficacy of the nanospheres with low IC 50 values (4.2–4.9 μg/mL) under light illumination (670 nm, 1.5 J/cm 2 ). Collectively, these results suggested that our nanospheres are the promising pH-responsive drug delivery systems for PDT.
研究领域:
材料科学
·
纳米技术
·
生物医学工程
·
癌症研究
·
药剂学
✓ 已验证
DOI
高影响因子
Analytical Methods
·
2025
·
IF 2.6
Xuyuan Sun,Ying Wang,Zhengyuan Dai,Li Li,Yaping Ding
A molecularly imprinted electrochemical sensor (MIECS) was constructed for selective determination of amlodipine (AML) based on zeolitic imidazolate framework-8 (ZIF8) and carboxylated multi-walled carbon nanotubes (f-MWCNT). f-MWCNT enhanced the electron transfer rate of the sensor and amplified the current signal response. The rigid structure of ZIF8 can be used as a support material for the molecularly imprinted polymer (MIP) film to protect the imprinted cavity. The MIP film was obtained by electropolymerization with amlodipine (AML) as the template molecule and nicotinamide (NA) as the functional monomer. The sensor could complete the sensitive detection of AML in the linear range from 10−13 M to 10−7 M, with a detection limit of 3.21 × 10−14 M. In addition, the recovery in tap water and tablets was satisfactory.
研究领域:
分析化学
·
电化学
·
材料科学
·
传感器技术
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ELECTROCHIMICA ACTA
·
2025
·
IF 5.6
Luping Feng,Enjun Chen,Jianghong Wang,Xinfeng Li,Yujie Fan,Leyao Jin,Peisong Tang,Lixiang Zhang
A simulated sunlight-driven photoelectrochemical (PEC) sensor has been developed for quantitative analysis of hydrogen sulfide (H 2 S) with “signal-on” output by Hg 2+ -integrated ZnS nanocubes (Hg 2+ @ZnS NCs). Herein, hollow ZnS NCs were firstly prepared by the ZIF-8-derived soft-template method. Subsequently, Hg 2+ probing ions were doped into the porous structures of these ZnS NCs through an adsorption reaction, yielding Hg 2+ @ZnS NCs. It was observed that Hg 2+ @ZnS-based PEC sensor could exhibit slightly enhanced PEC responses over pristine ZnS, attributed to the adsorption of Hg 2+ on ZnS surface, which may modulate surface states/defects and band structures to suppress surface recombination. More importantly, after the addition of H 2 S, the in-situ growth of HgS@ZnS with a type-II heterojunction enables enhanced photocurrent response in developed sensor by promoting efficient spatial charge separation and transfer. A PEC sensing platform with exceptional sensitivity and selectivity has been established for H 2 S quantification, covering a linear range of 0.05–10 nM and a detection limit of 32 pM, which may serve as a guideline for the design of PEC sensors for real-world H 2 S analysis in complex matrices like environmental wastewater and industrial waste gas.
研究领域:
分析化学
·
纳米技术
·
环境监测
·
光电化学
·
传感器技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF NANOBIOTECHNOLOGY
·
2026
·
IF 15
Xuefan Yang,Dandan Ruan,Feng Ye,Xinlan Qiu,Sitong Li,Lei Huang,Christos C Zouboulis,Xiaohui Mo,Xiping Jiang,Qiang Ju
Background: Acne Vulgaris (AV) lesions exhibit an acidic, sebum-rich, and inflammation-prone microenvironment in which conventional minocycline therapy is constrained by the stratum-corneum barrier and systemic exposure. Here, we present the fabrication and application of dissolvable silk fibroin microneedles encapsulating minocycline-loaded zeolitic imidazolate frameworks (Mino@ZIF-8/SF MNs) to achieve sebaceous gland-targeted, pH-responsive delivery and multimodal therapy. Results: The Mino@ZIF-8/SF MNs display uniform conical morphology, excellent mechanical robustness (peak failure force ≈ 0.4 N per needle), rapid dissolution (< 1 min), high drug loading (≈ 40.11%) and encapsulation efficiency (≈ 70.2%), and negligible hemolytic activity. Under mildly acidic conditions (pH 5.5), minocycline release was markedly accelerated compared to physiological pH 7.4, reflecting the acidified acne microenvironment. Functionally, Mino@ZIF-8/SF MNs achieved > 95% inhibition of Cutibacterium acnes at 30 µg/patch and substantially attenuated sebocyte inflammatory responses. In heat-killed C. acnes-stimulated SZ95 sebocytes, the Mino@ZIF-8/SF MNs downregulated NFKB1, IL-1α, IL-1β, IL-6, IL-8 and MMP9 expression, along with suppression of cytokine-cytokine receptor interaction, IL-17 and NET-associated signaling pathways. RNA-sequencing also suggested that sebocyte metabolism may undergo reprogramming involving enhanced apoptosis, maintenance of mitochondrial oxidative activity, and modulation of PPARγ-related lipid metabolism, which could collectively contribute to reduced lipid droplet accumulation. In a C. acnes-induced acne-like mouse model, Mino@ZIF-8/SF MNs markedly accelerated lesion resolution, reduced lesion elevation, eschar formation, and diameter scores, normalized epidermal thickness, and decreased sebaceous lipid accumulation, while exhibiting no detectable systemic toxicity as confirmed by histology, hematology, and serum biochemistry. Conclusion: Collectively, this study establishes a nanobiotechnology platform that integrates metal-organic frameworks(MOF)-based pH-responsive delivery with antibacterial, anti-inflammatory, and metabolic reprogramming activities, offering a precise and minimally invasive multimodal strategy for sebaceous gland-targeted acne therapy.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2020
·Vol. 55
·期 31
·15275-15287
·
IF 3.553
Liu Wenlong,Zhang Hua,Zhang Wen,Wang Mei,Li Jiahui,Zhang Yun,Li Hongyang
Abstract Metal–organic frameworks (MOFs) materials have unique advantages such as high surface area and favorable structures in the drug delivery system. However, MOFs have the characteristics of easy aggregation and poor dispersion, which make the drug delivery not to reach the ideal effect. Developing biodegradable carrier for controlled drug delivery is still a challenging task. In this work, the zeolitic imidazolate framework-8/polylactic acid (ZIF-8/PLA) composite membranes were prepared by secondary growth method on the surface of electrospun nanofiber membrane. As the incubation time prolonged and the 2-methylimidazole (2-MIM) concentration increased, the size of ZIF-8 particles increased and the distribution of ZIF-8 became more uniform, resulting in increased the hydrophilicity and surface roughness. Furthermore, PLA/ZIF-8 nanofiber membranes had excellent pH response and drug release capacity. While only up to 40% of loaded drug was released in the buffer of pH value of 7.4, over 90% of drug was released at pH 5.5 due to the dissolution of ZIF-8 skeleton at acidic solution. It indicates that the pH-responsive PLA/ZIF-8 nanofiber membrane can be used as highly efficient drug carriers. Graphic abstract
✓ 已验证
产品关联
DOI
高影响因子
BIOORGANIC CHEMISTRY
·
2022
·
IF 5.307
Junjie Wu,Mengmeng Zhang,Lulu Song,Yahong Tan,Yosuke Taniguchi,Christopher John Hipolito,Youming Zhang,Yizhen Yin
Oxidative lesions, such as 8-oxo-dG and 8-oxo-dA, are continuously generated from exposure to reactive oxygen species. While 8-oxo-dG has been extensively studied, 8-oxo-dA has not received as much attention until recently. Herein, we report the synthesis of duplex DNAs incorporating dA, 8-oxo-dA, 7-deaza-dA, 8-Br-dA, and 8-Br-7-deaza-dA, which have different substitutions at 7- and 8-position, for the investigation into the implications of N7-hydrogen and C8-keto on the base pairing preference, mutagenic potential and repair of 8-oxo-dA. Base pairing study suggested that the polar N7-hydrogen and C8-keto of 8-oxo-dA, rather than the syn -preference, might be essential for 8-oxo-dA to form a stable base pair with dG. Insertion and extension studies using KF-exo − and human DNA polymerase β indicated that the efficient dGTP insertion opposite 8-oxo-dA and extension past 8-oxo-dA:dG are contingent upon not only the stable base pair with dG, but also the flexibility of the active site in polymerase. The N7-hydrogen in 8-oxo-dA or C7-hydrogen in 7-deaza-dA and 8-Br-7-deaza-dA was suggested to be important for the recognition by hOGG1, although the excision efficiencies of 7-deaza-dA and 8-Br-7-deaza-dA were much lower than 8-oxo-dA. This study provides an insight into the structure-function relationship of 8-oxo-dA by nucleotide analogues.
研究领域:
分子生物学
·
生物化学
·
遗传学
·
DNA修复
✓ 已验证
DOI
PubMed
高影响因子
CHEMICAL RESEARCH IN CHINESE UNIVERSITIES
·
2017
·Vol. 33
·期 2
·187-193
·
IF 1.024
Li Hongshuang,Wu Xiaming,Zhang Ruize,Hao Liqiang,Duan Guiyun,Xiao Yuliang,Xia Chengcai,Li Furong,You Guirong,Han Junfen
Based on the hit 5-hydroxy-2-methyl-10-propyl-2,3-dihydro-4 H ,8 H -pyrano[2,3- f ]chromene-4,8-dione( 1 ), a series of pyrano[2,3- f ]chromene-4,8-dione derivatives was designed and synthesized using phloroglucinol as starting material. Meanwhile, a regioselective synthetic route was developed for 5-methoxy-2,3-dihydro-4 H ,8 H -pyrano-[2,3- f ]chromene-4,8-dione products( 11 a― 11 f), and their structures were further confirmed by nuclear Overhauser effect(NOE). The evaluation of anticancer activities of these compounds against four human cancer cell lines, including human glioma cell line (SHG-44), human lung cancer cell line(H1299), breast cancer cell line(MCF7) and human colon carcinoma cell line(HCT-116) in vitro shows that 5-methoxy-2,2-dimethyl-9-chloro-10-trifluormethyl-2,3-dihydro-4 H ,8 H -pyrano-[2,3- f ]chromene-4,8-dione( 11 e) possesses the best anticancer activities with IC 50 values of 6.68, 7.90, 5.16 and 4.82 μmol/L, respectively. Finally, the preliminary structure-activity relationships(SARs) were summarized, which could pave the way for generating more potent anticancer agents with drug-like properties.
研究领域:
药物化学
·
肿瘤学
✓ 已验证
DOI
高影响因子
JOURNAL OF CLUSTER SCIENCE
·
2024
·
IF 2.7
Luo Honghuan,Chen Menglan,Song Fangxiang,Cai Xiaoqin,Yan Yibing,Li Tingxian,Songye Li,Li Yan
Zeolitic imidazolate framework-8 (ZIF-8) is a promising material for drug delivery, but its poor stability limits its wide application. In this work, homogeneous dodecahedral ZIF-8 was prepared by the room-temperature solution stirring method, and to improve the stability of ZIF-8, ZIF-8@mSiO 2 and DZIF-8 (ZIF-8 after calcination) @PMO composites with the core-shell structure were obtained using mesoporous silica (mSiO 2 ) and periodic mesoporous organic silica (PMO) coatings. Folic acid-coupled chitosan (CS-FA) was modified on nanoparticles, and curcumin (CUR) was used as a model anti-tumor drug to obtain the drug delivery systems with targeting and pH stimulation response: ZIF-8@mSiO 2 @CUR@CS-FA and DZIF-8@PMO@CUR@CS-FA, which exhibited good dispersion and high drug loading capability. In addition, we used the MTT assay to assess the cytotoxicity of the drug-carrying systems and selected human cervical cancer cells (Hela) as model cells. The results of the in vitro experiments suggested that the final CUR-loaded drug delivery systems had significantly increased anticancer efficiency compared with the free drug CUR, which improved the therapeutic effect of the hydrophobic CUR on tumors. In conclusion, the pH-responsive nanocarriers provided potential for the targeted delivery of anticancer medication, resulting in a platform for drug-controlled release and cancer therapy.
研究领域:
纳米技术
·
药物递送系统
·
癌症研究
·
材料科学
·
药学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）