JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
·
2026
·
IF 4.4
Mengchao Feng,Yuchang Wang,Xuewei Lang,Feng Wei,Huayan Si,Jianbin Zhang
This work reports the synthesis of a novel ( α / β- CdS)/Ce(OH)CO 3 composite featuring both heterojunction and heterogeneous junction structures via a simple injection titration-stirring method. The as-prepared composite exhibited excellent visible-light-driven photocatalytic activity for the degradation of high-concentration oxytetracycline (OTC) solution. Under optimal conditions determined by single-factor and response surface analyses, 0.0300 g of the composite achieved a 75.26% degradation efficiency for 50 mL of 160 mg/L OTC solution within 120 min of visible light irradiation. Notably, the composite demonstrated remarkable stability, retaining 62.39% of its initial activity after five cycles, and showed enhanced performance under real sunlight for 120 min, with a degradation rate of 78.50%. The improved photocatalytic performance is attributed to the uniform dispersion of CdS nanoparticles with abundant sulfur vacancies, which increase light absorption and facilitate charge carrier separation. Furthermore, the formation of direct Z -scheme heterojunctions and heterogeneous junctions between CdS and Ce(OH)CO 3 promotes efficient separation and transport of photogenerated carriers, thereby enhancing both photocatalytic activity and material stability.
✓ 已验证
DOI
高影响因子
TALANTA
·
2026
·
IF 6.7
Linna Li,Yandi Hui,Zhen Li,Xingtong Liu,Rauf Ayesha,Lei Tian,Fujun Yao,Xiaofeng Kang,Yanli Guo
Adenosine phosphates (ATP, ADP, and AMP) play critical roles in cellular processes, yet their simultaneous detection remains challenging due to high structural similarity. To overcome this limitation, we developed a nanopore-aptamer sensing platform capable of tracking single-molecule binding dynamics in real time. This method leverages the specific interactions between aptamers and each adenosine phosphate, enabling discrimination among ATP, ADP, and AMP at the single-molecule level. We demonstrate the high sensitivity and selectivity of this approach, which supports high-throughput analysis even in complex matrices. The platform was successfully applied to quantify ATP, ADP, and AMP in human serum, with excellent recovery rates (85.33%-97.53%) and precision (RSD < 7.03%), demonstrating its practical utility for multiplexed detection in biologically relevant environments. This work provides a powerful strategy for precise metabolite analysis and facilitates new studies on nucleotide-dependent pathways.
✓ 已验证
DOI
PubMed
高影响因子
Regenerative Biomaterials
·
2023
·
IF 6.7
Wang Jiahao,Hu Yulin,Han Yuemei,Fang Qiuna,Chen Zhirong,Wang Yajia,Zhao Peiyi,Wang Hui,Lin Quankui
Posterior capsule opacification (PCO), the most common complication after cataract surgery, is caused by the proliferation, migration and epithelial–mesenchymal transition (EMT) of residual lens epithelial cells in the capsule bag. Although the surface modification and drug loading of intraocular lens (IOLs) have been effective in preventing PCO to some extent, the intraocular safety of anti-proliferative drug application is still a major limitation in clinical application. In this study, we used non-viral gene delivery systems in combination with layer-by-layer (LBL) self-assembly technology, and the modified IOL could effectively prevent the development of PCO by interfering with the EMT process mediated by the platelet-derived growth factor receptor-α (PDGFR-α). Herein, the gene fragments were wrapped by electrostatic conjugation using polyethyleneimine-graft-poly(ethylene glycol) to form gene complexes. Gene complexes were characterized by dynamic light scattering, transmission electron microscopy (TEM) and agarose gel electrophoresis, and evaluated for storage and serum stability. The layer assembly behavior of the IOL surface, changes in optical properties and the release behavior of the gene complexes were characterized using quartz crystal microbalance, UV–vis, contact angle and TEM. In vitro experiments showed that the IOL coating has good bio-compatibility and can achieve the corresponding transfection effect, and the released gene complexes exhibited excellent cell internalization and lysosomal escape behaviors, as well as effective inhibition of PDGFR-α expression and its mediated EMT process. The early PCO prevention effect and bio-compatibility evaluation of the modified IOL in vivo were evaluated by implantation into animal eyes. This study provides a new strategy for the development of surface modifications of small nucleic acid drugs and non-toxic EMT interference therapies for PCO.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Environmental Chemical Engineering
·
2023
·
IF 7.7
Yanli He,Shuguang Shen,Ying Wang,Chenyuan Guo,Yaping Yuan,Yaru Fan,Lili Zhang,Yuyan Song
A simple and low-cost method for the synthesis of α -MnO 2 /C catalyst was proposed, in which KMnO 4 was reduced in-situ by cellulose in urea solution. The heterogeneous catalytic degradation of urea wastewater were carried out over α -MnO 2 /C. The effect of KMnO 4 -urea solution concentration on the structure and performance of the catalysts was investigated. The results indicate that δ -MnO 2 tends to curl and collapse into tunnel structure of α -MnO 2 as the concentration of KMnO 4 -urea solution increases, leading to α -MnO 2 is evenly distributed on carbon carrier. When the concentration of KMnO 4 -urea solution is appropriate, the catalyst has not only a large specific surface area but also high oxygen vacancy density, which is the key to be able to completely degrade the urea process wastewater. The reaction kinetics show that the catalytic hydrolysis of urea behaves as a pseudo-first-order reaction. A possible catalytic mechanism of urea hydrolysis over α -MnO 2 /C was proposed. In addition, the reusability experiments show that the α -MnO 2 /C catalyst has a good recycling ability.
✓ 已验证
产品关联
DOI
高影响因子
FOOD RESEARCH INTERNATIONAL
·
2023
·
IF 8.1
Kai Zhang,Xiaojing Tian,Ruixi Shen,Yang Wang,Yafei Zhang,Wenhang Wang
We investigated the inhibition effect of carboxymethylated cellulose nanofibrils with four different surface chargeon α-amylase and amyloglucosidase via enzyme activity inhibition assay, fluorescence spectra and secondary structure change analysis. These results revealed that cellulose nanofibril with lowest surface charge displayed the greatest inhibition effects against α-amylase (9.81 mg/mL) and amyloglucosidase (13.16 mg/mL). All cellulose nanofibrils in starch model significantly ( p < 0.05) inhibited the starch digestion, where the inhibition effect was negatively correlated with the magnitude of particle surface charge. Cellulose nanofibrils could bind α-amylase or amyloglucosidase to form new complex in the manner of static quenching. The thermodynamic parameters demonstrated that the cellulose nanofibrils-starch hydrolase (α-amylase or amyloglucosidase) complexes were formed spontaneously via hydrophobic effects. Additionally, Fourier transform Infrared spectra exhibited the changes in the fraction of secondary structures of starch hydrolase after the interactions with carboxymethylated cellulose nanofibrils. These data provide a convenient and simple method tailor gastrointestinal digestion of starch by changing cellulose surface charge, to control postprandial serum glucose upsurge.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Catalysts
·
2022
·Vol. 12
·期 12
·1596
·
IF 4.501
Litao Jia,Fanghua Li,Chenjia Yang,Xiaonan Yang,Beibei Kou,Yonglei Xing,Juan Peng,Gang Ni,Zhong Cao,Shiyu Zhang,Tong Zhao,Xiaoyong Jin
The degradation efficiency of photoelectrocatalytic (PEC) processes for the removal of organic pollutants is highly dependent on the performance of the photoelectroanode catalyst. The design of PEC systems with a direct Z-scheme charge transfer mechanism and visible light excitation is essential to enhance the degradation efficiency of organic compounds. Here, a α-MnO2/BiOI direct Z-scheme heterojunction photocatalyst was successfully synthesized through a convenient and feasible method. It is remarkable that the photoanode exhibited excellent PEC performance under visible light irradiation; a 95% removal rate of tetracycline (TC) pollutants was achieved within 2 h, and it had excellent stability and reusability, which was expected to degrade antibiotics efficiently and environmentally in harsh environments. The presence of oxygen vacancies (OVs) in the α-MnO2/BiOI heterojunction was confirmed by electron spin resonance technique, and the OVs acted as electron traps that contributed substantially to the separation efficiency of photogenerated carriers. ESR characterization showed that the main reactive radicals during TC degradation were •OH and •O2−. By analyzing the intermediates, the possible degradation pathways of TC were further analyzed and a suitable degradation mechanism was proposed. The toxicity changes in the degradation process were explored by evaluating the toxicity of the intermediates. This study provides a new way to enhance the performance of Bi-based semiconductor photocatalysts for the effective degradation of TC in water.Keywords:direct Z-scheme heterojunction;organic pollutants;OVs;PEC
✓ 已验证
产品关联
DOI
高影响因子
MOLECULES
·
2022
·Vol. 27
·期 23
·8383
·
IF 4.927
Yan Li,Yang Yu,Gang Ma
Amyloid fibrillation of α-synuclein is implicated in the pathogenesis of Parkinson’s disease and heavy metal ions such as Fe3+, Zn2+, and Cu2+are known to be involved in the process. In this work, we explored the use of FTIR spectroscopy to look into the modulation effects of Fe3+, Zn2+, and Cu2+on the amyloid fibrillation of α-synuclein. We performed a curve-fitting analysis on the FTIR amide I bands of these α-synuclein fibril systems, namely, the pristine fibril and the fibrils prepared in the presence of Fe3+, Zn2+, and Cu2+. We found that the α-synuclein fibrils under the influences of metal ions all possessed a parallel β-sheet structure, turn structure, and disordered structure, similar to that of pristine α-synuclein fibril. We also observed metal-induced increases in the proportions of the β-sheet secondary structure within the α-synuclein fibrils, with Fe3+being the most effective inducer. We performed second derivative analysis of the side chain carboxylic groups of α-synuclein fibrils and found that the side chain microenvironment of the α-synuclein fibrils was more influenced by Fe3+than Zn2+, and Cu2+. In addition, our atomic force microscopic study revealed that the morphologies of α-synuclein fibrils under the influence of Fe3+was quite different from that of the Zn2+and Cu2+systems. Our FTIR results suggested that the modulation effects of Fe3+, Zn2+, and Cu2+on α-synuclein fibrillation occurred at both secondary and quaternary structural levels. At last, we proposed a mechanistic hypothesis to interpret how metal ions could affect the morphology of α-synuclein amyloid fibril based on the conformational plasticity properties of intrinsically disordered proteins.Keywords:amyloid;FTIR;α-synuclein;fibrillation;metal ion;fibril;secondary structure
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2023
·
IF 5.9
Wenquan Huang,Zhiqiang Li,Weiqi Liu,Shiyuan Liu,Rujin Zhou,Yanbin Jiang
Zein is an excellent protein-based pharmaceutical excipient , which has been extensively studied as a carrier for drug delivery system (DDS). However, the poor target ability of zein has limited its efficient delivery and in vivo applications. In this study, the B16 cancer cell membrane coated α-zein biomimetic drug delivery system was prepared to enhance homotypic target ability. The solubility and self-assembly behavior of α-zein were studied using different solvents, the particle size uniformity, stability and toxicity were evaluated. Then B16 cancer cell membrane (CCM) modified α-zein based nanocarrier was prepared by using the co-extrusion method. The AFM analysis showed that Young’s modulus (530.53 ± 66.55 MPa) of CCM-α-zein was smaller than that of membrane-derived vesicles, but bigger than that of α-zein. After coating the CCM on the surface of α-zein, the surface adhesion force of CCM-α-zeinα-zein (56.4 ± 4.6 nN) was significantly reduced. The results of protein electrophoresis showed that CCM-α-zein could completely retain the proteins of α-zein and CCM after co-extrusion. The safety of the DDS prepared was proved by the hemolysis test and non-tumor cells experiment. Paclitaxel was selected as the model drug to prepare DDS nanoparticles , the results of the cell experiment showed that the migration area of B16 cells was reduced by 5.79%, which indicated the strong inhibition migration ability of DDS. The nuclear activity analysis showed that the nuclei of B16 cells were broken into fragments. Qualitative and quantitative studies suggested that the prepared CCM-α-zein possessed homologous targeting ability. Therefore, this work presents an effective strategy to enhance the targeting ability, which will extensive biomedical applications of zein.
✓ 已验证
产品关联
DOI
高影响因子
Chinese Journal of Natural Medicines
·
2022
·
IF 3.887
Juanjuan GAO,Mengling ZHAO,Shujun SHAN,Yongyi LI,Jun LUO,Yi LI
Steroid saponins are secondary metabolites with multiple medicinal values that are found in large quantities in natural medicines, especially Vernonia amygdalina , a famous nature medicine for the treatment of tonsillitis, diabetes, pneumonia. The current study was designed to combine molecular networking (MN) with diagnostic ions for rapid identification of Δ 7,9(11) stigmastane-type saponins which were the α -glucosidase inhibitory active substances in V. amygdalina . First, the α -glucosidase inhibitory activities of five Δ 7,9(11) stigmastane-type steroid saponins that were previously isolated were screened, which indicated that the Δ 7,9(11) stigmastane-type steroid saponin was one of the active constituents responsible for ameliorating diabetes. Furthermore, a strategy was proposed to identify stigmastane-type steroid saponins and verify the plausibility of derived fragmentation pathways by applying MN, MolNetEnhancer and unsupervised substructure annotation (MS2LDA). Based on this strategy, other seven Δ 7,9(11) stigmastane-type steroid saponins were identified from this plant. Our research provide scientific evidence for the antidiabetic potential of the steroid saponin-rich extract of V. amygdalina leaf.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF DRUG DELIVERY SCIENCE AND TECHNOLOGY
·
2022
·
IF 5.062
Wan Liu,Meng Cheng,Fangying Yuan,Jiaying He,Yulin Feng,Yi Jin,Jianfang Feng,Shilin Yang,Liangxing Tu
Nanocrystal technology is a common strategy to enhance the oral bioavailability of poorly-soluble drugs, and how to enlarge the enhancing ability on oral absorption via nanocrystals has become a pharmaceutical research field. In this study, we selected andrographolide (ADR), a typical poorly-soluble drug, as the model drug, and employed sodium dodecyl sulfate and D-ɑ-Tocopherol polyethylene glycol 1000 succinate copolymer (SDS-TPGS) to construct novel SDS-TPGS modified andrographolide nanocrystals (S-TANs). We found that the particle sizes of SDS/TPGS physical mixture modified nanocrystals (STANs) were about 553.4 ± 4.1 nm , while that of SDS-TPGS modified nanocrystals (S-TANs) were 604.6 ± 5.7 nm. During the production process of nanocrystals, the crystallinity of ADR was slightly decreased. Nanocrystals enhanced the saturation solubility of ADR, and improved oral absorption, C max and AUC 0-∞ of S-TANs was about 2.10 and 1.24 fold increased, STAN about 2.63, 2.97 fold. In a Real-time distribution study, we found the distribution time of andrographolide, SDS and TPGS in SDS/TPGS physical mixture modified nanocrystals system varies widely, while the distribution times of these materials were similar in SDS-TPGS copolymer modified nanocrystals system. These results indicated that modified with functional stabilizer was an efficient strategy to enlarge the enhancing ability on oral absorption of nanocrystals, and synthesized copolymer containing different functional stabilizers showed higher ability on enhancing oral bioavailability than physical mixtures.
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
·
2023
·Vol. 24
·期 24
·17376
·
IF 5.6
Mingyu Xue,Xiaohong Xia,Yadi Deng,Fei Teng,Shiyue Zhao,Hui Li,Dejun Hao,Wei-Yi Chen
Alpha-pinene is one of the main defensive components in conifers.Monochamus alternatus(Coleoptera: Cerambycidae), a wood borer feeding on Pinaceae plants, relies on its detoxifying enzymes to resist the defensive terpenoids. Here, we assayed the peroxide level and GST activity ofM. alternatuslarvae treated with different concentrations of α-pinene. Meanwhile, agstgene (MaGSTe3) was isolated and analyzed. We determined its expression level and verified its function. The results showed that α-pinene treatment led to membrane lipid peroxidation and thus increased the GST activity. Expression ofMaGSTe3was significantly upregulated in guts following exposure to α-pinene, which has a similar pattern with the malonaldehyde level. In vitro expression and disk diffusion assay showed that the MaGSTe3 protein had high antioxidant capacity. However, RNAi treatment of MaGSTe3 did not reduce the hydrogen peroxide and malonaldehyde levels, while GST activity was significantly reduced. These results suggested MaGSTe3 takes part in α-pinene adaptation, but it does not play a great role in the resistance ofM. alternatuslarvae to α-pinene.Keywords:glutathione S-transferase;detoxification enzymes;monoterpene
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
·
2023
·Vol. 415
·期 20
·5011-5021
·
IF 4.3
He Jingbo,Xie Chenchen,Meng Chen,Chen Xiaolin,Liu Huilin,Sun Baoguo
A thermal-sensitive molecularly imprinted optosensing probe based on fluorescent advanced glycation end products (AGEs) was prepared by one-pot hydrothermal synthesis. Carbon dots (CDs) derived from fluorescent AGEs were used as the luminous centers, while molecularly imprinted polymers (MIPs) were wrapped outside of the CDs to form specific target recognition sites to highly selectively adsorb the intermediate product of AGEs of 3-deoxyglucosone (3-DG). Thermosensitive N-isopropylacrylamide (NIPAM) was combined with acrylamide (AM) as co-functional monomers, and ethylene glycol dimethacrylate (EGDMA) was chosen as a cross-linker for targeting identification and detection of 3-DG. Under optimal conditions, the fluorescence of MIPs could be gradually quenched with the adsorption of 3-DG on the surface of MIPs in the linear range of 1–160 μg/L, and the detection limit was 0.31 μg/L. The spiked recoveries of MIPs ranged from 82.97 to 109.94% in two milk samples, and the relative standard deviations were all less than 1.8%. In addition, the inhibition rate for non-fluorescent AGEs of pyrraline (PRL) was 23% by adsorbing 3-DG in the simulated milk system of casein and d -glucose, indicating that temperature-responsive MIPs not only could detect the dicarbonyl compound 3-DG quickly and sensitively, but also had an excellent inhibitory effect on AGEs. Graphical abstract
✓ 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）