International Journal of Nanomedicine
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2019
·
IF 4.471
Dian Chen,Tonghe Zhu,Wei Fu,Haibo Zhang
Purpose A promising vascular scaffold must possess satisfying mechanical properties, great hemocompatibility, and favorable tissue regeneration. Combining natural with synthetic materials is a popular method of creating/enhancing such scaffolds. However, the effect of additional modification on the materials requires further exploration. Materials and methods We selected polycaprolactone (PCL), which has excellent mechanical properties and biocompatibility and can be combined with collagen. Electrospun fibers created using a PCL/collagen solution were used to fashion mixed nanofibers, while separate syringes of PCL and collagen were used to create separated nanofibers, resulting in different pore sizes. Mixed and separated nanofibers were cross-linked with glutaraldehyde (GA), 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide (EDC), and genipin; hence, we named them as mixed GA, mixed EDC (ME), mixed genipin (MG), separated GA, separated EDC (SE), and separated genipin (SG). Results Fourier transform infrared (FTIR) spectroscopy and X-ray diffraction showed that cross-linking did not affect the main functional groups of fibers in all groups. ME, MG, SE, and SG met the requisite mechanical properties, and they also resisted collagenase degradation. In hemocompatibility assays, only ME and MG demonstrated ideal safety. Furthermore, ME and MG presented the greatest cytocompatibility. For vascular scaffolds, rapid endothelialization helps to prevent thrombosis. According to human umbilical vein endothelial cell migration on different nanofibers, ME and MG are also successful in promoting cell migration. Conclusion ME and MG may be promising candidates for vascular tissue engineering. The study suggests that collagen cross-linked by EDC/ N -hydroxysuccinimide or genipin facilitates endothelial cell regeneration, which could be of great benefit in tissue engineering of vascular scaffolds.
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高影响因子
MOLECULAR NUTRITION & FOOD RESEARCH
·
2025
·Vol. 70
·期 1
·e70363
·
IF 4.2
Shaoxuan Wang,Fei Pan,Xinyan Xu,Qian Fan,Yangyang Wang,Lei Zhao,Liang Zhao
Heterocyclic aromatic amines (HAAs), potential carcinogens formed in processed meats, have been linked to liver injury. This study evaluated whether cyanidin-3-O-glucoside (C3G, 100 mg/kg) protects against liver injury by the representative HAA 2-amino-3-methylimidazo[4,5-f]quinoline (IQ, 20 mg/kg) in mice, and explored mechanisms by integrated approaches: biochemical assays, histology, Western blot, and molecular dynamics (MD) simulations. Results demonstrated that C3G significantly ameliorated IQ-induced liver injury, as indicated by reduced serum AST and ALT and inflammatory cytokines (IL-6, IL-1β, TNF-α) levels. Additionally, C3G restored redox homeostasis by inhibiting lipid peroxidation and protein carbonylation, while enhancing antioxidant defenses (GSH, GSH-Px, and SOD). Mechanistically, C3G exerted its protective effects via multiple anti-apoptotic pathways. Specifically, it attenuated mitochondrial apoptosis by lowering the Bax/Bcl-2 ratio and inhibiting cytochrome c-caspase-9/3 activation. It also alleviated endoplasmic reticulum (ER) stress by downregulating GRP78/ATF4/CHOP and caspase-12. Furthermore, C3G interfered with death receptor signaling by reducing Fas/FasL/FADD activation and caspase-8, while upregulating CFLAR. MD simulations further demonstrated that C3G binds to the hydrophobic pocket of BAX and weakens BAX-BIM interactions. These results conclusively identify C3G as a multi-target agent against IQ-induced liver damage, highlighting its promise for development into a novel dietary strategy to counteract the toxicological risks of processed meat consumption.
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高影响因子
PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY
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2020
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IF 2.751
Jie Xiang,Dengyue Liu,Jixiang Chen,Deyu Hu,Baoan Song
In this study, thirty 1,3,4-oxadiazole sulfone derivatives containing 3,4-dichloroisothiazolamide moiety were designed and synthesized, and their antibacterial activities were evaluated. Bioassay results showed that some compounds exhibited excellent antibacterial activities against Xanthomonas oryzae pv. oryzae ( Xoo ) and Xanthomonas oryzae pv. oryzicola ( Xoc ) in vitro and in vivo . Notably, the EC 50 values of compounds 2 and 3 against Xoo were 0.79 and 0.85 μg/mL, respectively, which were superior to those of the control agents isotianil, bismerthiazol, and thiodiazole copper. In addition, in vivo antibacterial activities revealed that the compound 2 at 50 μg/mL possessed protective and curative activities of 43.99% and 41.06% against Xoo , respectively, which were better than positive controls. Furthermore, the preliminary mechanism study disclosed that compound 2 exhibited effective antibacterial activity against Xoo by inhibiting the formation of extracellular polysaccharides from Xoo , increasing cell permeability , and changing the shape of cells. This study suggested that 1,3,4-oxadiazole sulfone derivatives containing 3,4-dichloroisothiazolamide moiety displayed excellent antibacterial activity and could be further explored and developed as commercial pesticides.
研究领域:
植物病理学
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农药化学
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微生物学
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高影响因子
HIGH PERFORMANCE POLYMERS
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2022
·
IF 1.73
Qi Li,Sung S Park,Chang-Sik Ha,Shuai Yuan,Liyi Shi
In this work, a copolyimide (Co-PI) film with high transparency was prepared by the copolymerization of hexafluoroisopropylidene)diphthalic anhydride (6FDA), 3,3′,4,4′-biphenyltetracarboxylic dianhydride (BPDA), 2,2′-Bis(trifluoromethyl)benzidine (TFMB) and adamantane-1,3-diamine (DAA). The effects of DAA monomers on the optical, thermal, and mechanical properties of the co-PIs were discussed in detail. We found that the preparation of polyimide (PI) based on the combination of two dianhydrides and two diamines could obtain the co-PI film with excellent comprehensive performance due to the synergy between the -CF3 group, the aliphatic ring and the aromatic structure. Through the structure and composition optimization, the co-PI film with 1.30% DAA (Q3) has a Tg of 374oC, T5 higher than 530oC, T430 of 82% and the tensile strength higher than 145 MPa. These results indicate that the Co-PI films can be successfully utilized in the development of novel heat-resistant plastic substrates for the optoelectronic engineering applications.
研究领域:
聚合物科学
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材料科学
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光电子学
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高影响因子
JOURNAL OF ORGANIC CHEMISTRY
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2025
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IF 3.6
Yang Zhu,Guisheng Deng
The I2-catalyzed reaction of 1-(2-hydroxyphenyl)-propargyl alcohols with indoles and subsequent treatment with K2CO3 provided (benzofuran-3-yl)-1H-indoles in good to excellent yields with high regioselectivity. This one-pot and two-step strategy proved to be suitable for a wide range of substrates except for aliphatic alkynyl alcohols as well as the indoles bearing N-protected groups such as the Ts group possessing strong electron-withdrawing feature. The reaction procedure involved a cross-coupling and the construction of a benzofuran framework via 5-exo-dig cyclization.
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高影响因子
CERAMICS INTERNATIONAL
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2022
·
IF 5.532
Daokun Liu,Jinxue Guo,Yanfang Sun,Xiao Zhang
Sodium super-ionic conductor (NASICON) materials are believed as competitive cathodes for sodium-ion batteries, however, their practical application is still prohibited by the limited reversible capacity. In this study, the tri-metal NASICON structured Na 3 Mn 0.5 V 0.5 Ti(PO 4 ) 3 is designed to combine with reduced graphene oxide (NMVTP/rGO) as cathode material . Benefited from the multi-step redox couples of Mn, V, and Ti, NMVTP/rGO realizes high reversible capacity and wide operating voltage. The small sizes of Na 3 Mn 0.5 V 0.5 Ti(PO 4 ) 3 and rGO ensure the fast charge migration. The rGO inhibits the dissolution of electrode material. As a result, NMVTP/rGO exhibits large specific capacity of 284.6 mAh g −1 at 0.1C, high rate performance (170.2 mAh g −1 at 1C and 108.5 mAh g −1 at 5C), and good cyclic stability. This work demonstrates a new insight for designing tri-metal NASICON structured materials with high capacity for sodium-ion batteries.
研究领域:
材料科学
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电化学
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高影响因子
Chinese Journal of Natural Medicines
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2014
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IF 0
De-Biao YAN,Dong-Ping ZHANG,Ming LI,Wen-Yuan LIU,Feng FENG,Bin DI,Qing-Long GUO,Ning XIE
To synthesize a series of 3-, 4-, and/or 11-trihydroxy modified bergenin derivatives and evaluated their cytotoxic activity in vitro . The phenolic hydroxyl groups of bergenin were protected by benzyl groups with benzyl bromide. Treatment of dibenzyl bergenin with the corresponding acid in the presence of EDC·HCl and DMAP in CH 2 Cl 2 , followed by hydrogenation over Pd/C catalysts, afforded derivatives of bergenin esters. All of the target compounds were identified by IR, MS, and 1 H NMR. Twenty-six novel and three known derivatives of bergenin esters were synthesized. Their cytotoxicity values were evaluated by the MTT assay on the inhibition of DU-145 and BGC-823 cells in vitro . Several triply-substituted ( 3a, 4a, 5a, 6a, 7a ) and doubly-substituted ( 8b, 9b ) bergenin derivatives exhibited higher cytotoxic activity than bergenin. The result showed that the size of substituents and the lipophilicity of the bergenin esters displayed an important role on their cytotoxic activity.
研究领域:
药物化学
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肿瘤学
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PubMed
FIBERS AND POLYMERS
·
2016
·Vol. 17
·期 11
·1741-1748
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IF 1.022
Xu Bin,Li Qiaoping,Zhuang Linghua,Wang Qiang,Li Chao,Wang Guowei,Xie Fengwei,Halley Peter J.
3-methyl-1-(ethylacetyl)imidazolium chloride ([EtMIM]Cl), was synthesized for chitosan dissolution, and the dissolution and regeneration behaviors of chitosan in [EtMIM]Cl were thoroughly investigated. The solubility of chitosan in [EtMIM]Cl was measured at temperatures ranging from 40 °C to 110 °C, based on which the thermodynamic parameters of chitosan in [EtMIM]Cl were calculated. The polarizability and hydrogen bond accepting ability was determined by solvatochromic UV/vis spectroscopy. The regenerated chitosan from [EtMIM]Cl by adding methanol was characterized by thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and scanning electron microscopy (SEM). Density functional theory (DFT) computations were performed to study the interactions between [EtMIM]Cl and chitobiose. Five kinds of hydrogen bonds, C-H/O, O-H/O, O-H/Cl, C-H/Cl, N-H/Cl were found, suggesting strong interactions between [EtMIM]Cl and chitobiose. In particular, the oxygen atom and the active methylene group of carboxylic ester in [EtMIM] + , formed strong hydrogen bonding with chitobiose. The molecular simulation results indicated that both the Cl − anions and [EtMIM] + cation played important roles in the chitosan dissolution process, by the disruption of native hydrogen bonds of chitosan.
研究领域:
生物化学
·
材料科学
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高影响因子
ELECTROCHIMICA ACTA
·
2016
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IF 4.803
Zhangxing He,Yingqiao Jiang,Wei Meng,Jing Zhu,Yang Liu,Lei Dai,Ling Wang
In this paper, LiTi 2 (PO 4 ) 3 @N-doped carbon anode has been synthesized by in situ carbon coating approach. The well-proportioned N-doped carbon layer and loose nanoporous structure was obtained by using urea as nitrogen source and pore former. LiTi 2 (PO 4 ) 3 @N-doped carbon as anode demonstrates much better rate capability than LiTi 2 (PO 4 ) 3 @carbon in ALIBs. The optimized anode delivers the discharge capacity of 93.7 mAh g −1 and 74.2 mAh g −1 at rates of 10C and 20C, 22.5 mAh g −1 and 50.0 mAh g −1 larger than that of LiTi 2 (PO 4 ) 3 @carbon. Moreover, LiTi 2 (PO 4 ) 3 @N-doped carbon exhibits excellent cycling performance with capacity retention of 84.3% at 5C after 1000 cycles. As verified, the well-proportioned N-doped carbon layer could reduce charge transfer resistance and improve electrical conductivity. The loose nanoporous structure could shorten pathway and facilitate diffusion for Li ion. Therefore, LiTi 2 (PO 4 ) 3 @N-doped carbon gets the superior electrochemical properties benefiting from those two characteristics.
研究领域:
材料科学
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电化学
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Chao Liu,Yanqiao Ren,Can Hong,Xuyu Li,Mengqing Guo,Le Zhao,Yan Liu,Chuansheng Zheng,Xiangliang Yang,Yanbing Zhao
Transarterial chemoembolization (TACE) is a first-line clinical therapy on hepatocellular carcinoma (HCC). However, the presence of TACE resistance leads to less than satisfactory treatment outcomes and prognosis. By genomic analysis on the 147 HCC patients in the Gene Expression Omnibus (GEO) database, in the present work, the key role of glycolysis on hypoxia and immunosuppressive tumor microenvironment (TME) was well verified, contributing to the development of TACE resistance. Aiming to the issue, radiofrequency (RF)-responsive liposome hydrogels (3BP-TSLIP) was successfully prepared by thin-film hydration of temperature sensitive polymers (DSPE- p NIPAM), cationic lipid, the glycolytic inhibitor 3-bromopyruvate (3BP) and other phospholipids. 3BP-TSLIP showed temperature sensitive sol-gel phase transition at nearby body temperature, allowing to a sufficient embolization by intubating super-selectively into tumor-feeding arteries. By synergizing with RF irradiation, 3BP-TSLIP inhibited tumor glycolysis, reduced lactic acid (LA) efflux, and alleviated hypoxia. It was attributed to the protection of TSLIP to 3BP from hydrolysis and its unique RF-heating effect, facilitating to glycolysis suppression of 3BP by RF-thermo-sensitization. In the VX2 tumor-bearing rabbit model, 3BP-TSLIP showed favorable embolization to tumor-feeding arteries, and the enhanced antitumor efficacy by co-treating with RF irradiation. 3BP-TSLIP can serve as RF responsive embolic agent for opening a new avenue to overcome TACE resistance.
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高影响因子
CHEMBIOCHEM
·
2026
·Vol. 27
·期 1
·e202500945
·
IF 2.8
Min Huang,Jiayi Han,Hao Li,Junhao Lin,Qingbo Jiao,Zexing Cao,Qunfang Lei,Wenjun Fang,Gerui Ren,Zhijun Song,Ying Zheng,Ruibo Wu,Hujun Xie
Growing interest in sustainable nutrition has improved the importance of understanding the interactions between (-)-Epigallocatechin-3-gallate (EGCG), a polyphenol in green tea, and proteins for functional food development. In this study, we investigated the regulatory effects of EGCG on the aggregation behavior of zein, ovalbumin, and their complexes. The addition of EGCG at 100 μg mL −1 led to significant changes in particle sizes of zein, ovalbumin, and zein-ovalbumin complexes, increasing them from 215.6, 3485.3, and 2081.0 nm to 4822.3, 7857.0, and 5895.7 nm, respectively. The zeta potentials of these samples decreased from 8.4, −2.6, and 5.0 mV to −5.3, −0.66, and 2.13 mV, respectively, indicating a reduction in net surface charges and promotion of protein aggregation. UV–vis absorption spectroscopy revealed hyperchromic effects and blue shifts upon EGCG addition, suggesting conformational changes. Molecular dynamics simulations further revealed that EGCG contributed to the structural stabilization of both individual proteins and their complexes by reinforcing hydrophobic and electrostatic contacts at the molecular interface. These findings provide molecular-level insights into the regulatory role of EGCG in protein assembly and offer guidance for the rational design of plant-animal protein complexes with tailored functional properties for food applications. Graphical EGCG plays a significant regulatory role in protein aggregation behavior. EGCG interacts with protein molecules, promoting conformational changes and aggregation, particularly in systems involving zein and ovalbumin. This study highlights the potential application of EGCG in the development of functional foods.
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高影响因子
Advanced Composites and Hybrid Materials
·
2021
·Vol. 4
·期 3
·629-638
·
IF 5.693
Song Haixiang,Zhang Qiqi,Zhang Yanwei,Wang Yanfei,Zhou Zhongyuan,Zhang Ping,Yuan Bingnan
To study the influences of 3-amino-polyhedral oligomeric silsesquioxane (NH 2 -POSS) on the properties of waterborne polyurethanes (WPU), a series of NH 2 -POSS modified WPUs were synthesized by using polypropylene glycol (PPG-2000, PPG-310), 2,2-dimethylolpropionic acid (DMPA), isophorone diisocyanate (IPDI), and NH 2 -POSS via a one-pot reaction and a high shear emulsification method. The results showed that when the NH 2 -POSS amount in the WPU/NH 2 -POSS nanoemulsion was 5.73 wt% (WPU2, based on the weight of WPU resin), its viscosity was 2.496 MPa · s and its Zeta potential was 63.7 mV(pH = 6.1), showing lower viscosity and better dispersion stability. The particle size of WPU2 is smaller than that of WPU0, and the polydispersion index (PDI) of WPU2 was decreased from 5.520 to 3.837 indicating a higher crosslinking density. In addition, the thermal stability of WPU/NH 2 -POSS nanoemulsion was increased with the content of NH2-POSS from 0.00 to 13.19%. The water contact angle values for the WPU2 (84.5°) were higher than that of WPU0 (80.2°), showing an improvement of the hydrophobic properties. This WPU/NH2-POSS nanocomposites can be used for making coating adhesive for textile and hosting matrix for making multifunctional nanocomposites. Graphical abstract
研究领域:
材料科学
·
化学工程
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高影响因子
危险品化学品经营许可证（带存储）