Nature Communications
·
2023
·Vol. 14
·期 1
·1-15
·
IF 16.6
Yang Yang,Chu Chenyu,Liu Li,Wang Chenbing,Hu Chen,Rung Shengan,Man Yi,Qu Yili
Skin scarring devoid of dermal appendages after severe trauma has unfavorable effects on aesthetic and physiological functions. Here we present a method for large-area wound regeneration using biodegradable aligned extracellular matrix scaffolds. We show that the implantation of these scaffolds accelerates wound coverage and enhances hair follicle neogenesis. We perform multimodal analysis, in combination with single-cell RNA sequencing and spatial transcriptomics, to explore the immune responses around biomaterials, highlighting the potential role of regulatory T cells in mitigating tissue fibrous by suppressing excessive type 2 inflammation. We find that immunodeficient mice lacking mature T lymphocytes show the typical characteristic of tissue fibrous driven by type 2 macrophage inflammation, validating the potential therapeutic effect of the adaptive immune system activated by biomaterials. These findings contribute to our understanding of the coordination of immune systems in wound regeneration and facilitate the design of immunoregulatory biomaterials in the future.
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ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2023
·Vol. 30
·期 49
·108230-108246
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IF 5.8
Zhang Xiao,Luo Shiwen,Duan Jiaxin,Lan Tao,Wei Yun
Adsorption is an effective method for the removal of hazardous substances from wastewater. In this work, a low-cost and environmental-friendly composite hydrogel material of sodium alginate doped with nitrogen doped carbon dots (SA@NCDs) was fabricated by impregnation for lanthanide and enhanced phosphorus adsorption in wastewater. The effects of NCDs doping amount, dosage, pH, initial solution concentration, adsorption time and temperature on the process of La (III) adsorption by SA@NCDs were investigated. The adsorption isotherms fitted to Langmuir isotherm model (R 2 = 0.9970–0.9989) and the adsorption kinetics followed pseudo-second-order kinetic model (R 2 = 0.9992). The maximum adsorption capacity of the adsorbent for La (III) was 217.39 mg/g according to the Langmuir model at 298.15 K. After five cycles, the removal efficiency of La (III) adsorbed by SA@NCDs was still 85.1%. Moreover, the loaded La (III) enhanced the adsorption of phosphorus. The La (III)-SA@NCDs-5 hydrogel adsorbent greatly improved the adsorption capacity for phosphorus compared with the La (III)-free adsorbent, and the adsorption amount can reach 9.64 mg-P/g. The SA@NCDs complex hydrogels for rare earth adsorption were prepared by introducing NCDs rich in amino group into SA hydrogels. The introduction of NCDs increases the adsorption sites of hydrogels, and also overcomes the problem that NCDs itself is difficult to recover in wastewater treatment applications. The lanthanide adsorbed material has a stable structure and can be used to remove phosphorus to deal with waste using the waste. It indicates the SA@NCDs hydrogel composite adsorbent have good potential for wastewater treatment. Graphical Abstract
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Advanced Composites and Hybrid Materials
·
2023
·Vol. 6
·期 6
·1-15
·
IF 20.1
Tang Jijun,Gao Guicheng,Luo Weiqi,Dai Qiuyang,Wang Yuchen,Elzilal Hala A.,Abo-Dief Hala M.,Algadi Hassan,Zhang Jiaoxia
Domestic wastewater contains trace amounts of organic pollutants that are difficult to remove, such as antibiotics and dyes, so effective degradation technologies need to be found. Therefore, we report the fabrication of a novel Z-scheme MIL-125(Ti)/GO photocatalyst by an in-situ growing method. The photodegradation experiment showed that MIL-125(Ti)/GO degraded TC by 81.1% at 5% GO addition, which is 1.7 and 3.8 times higher than MIL-125(Ti) and GO, respectively. The degradation rate reached 0.0201 min −1 , 3.3 times and 8.1 times higher than MIL-125 (Ti) and GO, respectively. The study shows that GO and MIL-125(Ti), as electron donors and electron acceptors, respectively, form a Z-scheme heterojunction structure, which effectively improves the photocatalytic performance of MIL-125(Ti). MIL-125(Ti)/GO has excellent structural stability and reusable availability, and the main reactive radicals are ·O − 2 and h + . This study provides new insights into the design and fabrication of MIL-125 (Ti) derivatives as photodegrading organic pollutants.
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Cell Death Discovery
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2023
·Vol. 9
·期 1
·1-15
·
IF 7
Ye Jianfeng,Liu Wangmin,Yu Xueyang,Wu Lina,Chen Zhengjie,Yu Yufei,Wang Jianfeng,Bai Song,Zhang Mo
Homeobox A5 (HOXA5), a homeodomain transcription factor, is considered a tumor suppressor in cancer progression; however, its function in prostate cancer (PCa) remains unclear. This study focused on the relevance of HOXA5 in PCa progression. We identified the downregulation of HOXA5 in PCa tissues based on the TCGA database and further verified in 30-paired PCa and adjacent normal tissues. Functional studies revealed that HOXA5 upregulation impaired the stem-like characteristics and malignant behaviors of PCa cells in vitro and in vivo. Mechanistically, HOXA5 was found to be regulated by tumor necrosis factor receptor-associated factor 7 (TRAF7), a putative E3-ubiquitin ligase. We observed that TRAF7 was overexpressed in PCa and subsequently enhanced the degradation of HOXA5 protein via its ubiquitin ligase activity, contributing to the acquisition of an aggressive PCa phenotype. For its downstream mechanism, we demonstrated that sprouty RTK signaling antagonist 2 (SPRY2) served as a downstream target of HOXA5. HOXA5 could directly bind to the SPRY2 promoter, thereby regulating the SPRY2-mediated MEK/ERK signaling pathway. Silencing SPRY2 largely compromised the tumor-suppressive effect of HOXA5 in PCa progression and cancer stemness. Our findings highlight the previously-underappreciated signaling axis of TRAF7–HOXA5–SPRY2, which provides a novel prognostic and therapeutic target for PCa treatment.
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JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
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2023
·Vol. 148
·期 22
·12739-12750
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IF 4.4
Liang Kaili,Liu Yang,Hu Lishuang,Liang Jiashun,Lv Tiancheng,Wu Wei,Wang Yanping,Tu Zhiqiong,Hu Shuangqi
Micron-sized titanium particles have potential applications as energetic metal high-enthalpy fuel materials. The molecular perovskite energetic material DAP-4 (H 2 dabco)[NH 4 (ClO 4 ) 3 ] is a potential high-energy oxidizer in solid rocket propellants. To explore the combustion mechanism and energy output of DAP-4-based Ti composites, the combustion characteristics of DAP-4/Ti and F/DAP-4/Ti were studied by electrode ignition device. The results show that the burning rate of DAP-4 can be adjusted by controlling the mass ratio of DAP-4/Ti. After adding Ti into DAP-4, the heat release, self-sustaining combustion time and flame front propagation velocity are greatly increased to 9,113 J g −1 , 265 ms and 0.225 mm ms −1 , respectively, better than those of DAP-4. With Ti added, the decomposition peak temperature of F/DAP-4/Ti dropped from 381.5 to 360.4 ℃. The experimental results contribute to a better understanding of the chemical reaction mechanism and energy release characteristics of DAP-4-based propellants containing Ti.
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Nature Communications
·
2023
·Vol. 14
·期 1
·1-14
·
IF 16.6
Yu Chaojie,Shi Mingyue,He Shaoshuai,Yao Mengmeng,Sun Hong,Yue Zhiwei,Qiu Yuwei,Liu Baijun,Liang Lei,Zhao Zhongming,Yao Fanglian,Zhang Hong,Li Junjie
With advances in tissue engineering and bioelectronics, flexible electronic hydrogels that allow conformal tissue integration, online precision diagnosis, and simultaneous tissue regeneration are expected to be the next-generation platform for the treatment of myocardial infarction. Here, we report a functionalized polyaniline-based chronological adhesive hydrogel patch (CAHP) that achieves spatiotemporally selective and conformal embedded integration with a moist and dynamic epicardium surface. Significantly, CAHP has high adhesion toughness, rapid self-healing ability, and enhanced electrochemical performance, facilitating sensitive sensing of cardiac mechanophysiology-mediated microdeformations and simultaneous improvement of myocardial fibrosis-induced electrophysiology. As a result, the flexible CAHP platform monitors diastolic-systolic amplitude and rhythm in the infarcted myocardium online while effectively inhibiting ventricular remodeling, promoting vascular regeneration, and improving electrophysiological function through electrocoupling therapy. Therefore, this diagnostic and therapeutic integration provides a promising monitorable treatment protocol for cardiac disease.
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ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
·
2023
·
IF 2.9
Feng Qing,Yang Jing,Dou Mingyuan,Zou Shuai,Wei Lixia,Huang Fuchuan
To achieve the goal of developing high-performance lubricant additives for industrial lubrication. Herein, tetradecylphosphonic acid (TDPA) modified Ti 3 C 2 T X and graphene oxide (GO) were used as nanohybrid lubricant additives in the polyalphaolefins base oil (PAO6). The high-speed reciprocating friction and wear test shows that TDPA–Ti 3 C 2 /GO is an efficient friction-reduction and antiwear additive. The base oil mixed with 0.05 wt%TDPA–Ti 3 C 2 /0.05 wt% GO exhibits the lowest coefficient of friction (COF) and wear rate with the value of 0.09 and 4.4 × 10 –6 mm 3 /Nm, decreased by 54.5 and 90.0% compared with pure PAO6 oil, respectively. Detailed characterization analysis shows that the tribological film of the modified TDPA–Ti 3 C 2 /GO nanohybrids oil-lubricated surface was mainly composed of PAO6, TDPA, GO, and iron oxide. This indicates that the friction-reduction and antiwear mechanism of TDPA–Ti 3 C 2 /GO in base oil lies in the adsorption of the two nanomaterials and the formation of a self-lubricating film on the rubbing interface. This study provides a new approach to the design of nanohybrid lubricant additives and creates new prospects for the application of nanomaterials in tribology.
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JOURNAL OF ELECTRONIC MATERIALS
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2023
·
IF 2.1
Zhu Mengjun,Gan Mingtao,Pan Jianfeng,Tu Jiangping,Wang Xiuli,Gu Changdong
In order to enhance the electrolytic copper foil-epoxy adhesion in copper clad laminates, surface modification of the copper foil with a proper coupling agent is essential. However, single polydopamine (PDA) or silane coating on the copper foil is usually not satisfied. Herein, a composite coating on the copper foil is proposed by combining the universal adhesion promoter of PDA and the electrodeposited silane layer. X-ray photoelectron spectroscopy and Fourier transform infrared spectroscopy confirmed the formation of the composite coating. The composite coating was uniformly distributed on the copper substrate as revealed by nano-infrared spectrometry and scanning electron microscopy observations. Compared with the pristine copper foil, the copper foil modified by the composite coating exhibited increased peel strength to the epoxy substrate by about 42.15% and improved corrosion resistance in both saline water and high-temperature (200°C) environments, which is attributed to its uniformity and the interface compatibility of the composite coating. Graphical Abstract
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Carbon Letters
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2023
·
IF 4.5
Ma Linping,Long Xiang,Ma Yanshun,Wu Shaogui
Carbon dots (CDs) are versatile nanomaterials with tunable luminescent properties. We used a natural plant kaempferol as a carbon source to synthesize multicolor CDs by reacting it with various nitrogen sources. Blue, green, and red CDs (B-CDs, G-CDs, and R-CDs) with emission wavelengths of 445 nm, 510 nm, and 600 nm respectively were successfully synthesized. Their photoluminescence quantum yields of are up to 37.4%, 20.1%, and 30.8%, respectively. Surface analysis revealed abundant nitrogen groups influencing luminescence. B-CDs and G-CDs show excitation-dependent emissions, indicating a potential correlation between their luminescence and particle sizes, while R-CDs exhibit excitation-independent emission, suggesting they belong to molecular state CDs. All three CDs exhibit stable luminescent performance, as well as good salt resistance and photobleaching resistance. The practical application of multicolored CDs in anti-counterfeiting fluorescent inks was further explored. This work offers a straightforward, eco-friendly route to synthesize multicolor CDs.
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Nature Communications
·
2023
·Vol. 14
·期 1
·1-19
·
IF 16.6
Zhang Peisen,Cheng Junwei,Lu Yijie,Zhang Ni,Wu Xiaoai,Lin Hua,Li Wei,Wang Jian,Winnik Mitchell A.,Gan Zhihua,Hou Yi
Magnetic resonance (MR) angiography is one of the main diagnostic approaches for cardiac-cerebral vascular diseases. Nevertheless, the non-contrast-enhanced MR angiography suffers from its intrinsic problems derived from the blood flow-dependency, while the clinical Gd-chelating contrast agents are limited by their rapid vascular extravasation. Herein, we report a hypersensitive MR angiography strategy based on interlocking stratagem of zwitterionic Gd-chelate contrast agents (PAA-Gd). The longitudinal molar relaxivity of PAA-Gd was 4.6-times higher than that of individual Gd-chelates as well as appropriate blood half-life (73.8 min) and low immunogenicity, enabling sophisticated micro-vessels angiography with a resolution at the order of hundred micrometers. A series of animal models of cardiac-cerebrovascular diseases have been built for imaging studies on a 7.0 T MRI scanner, while the clinical translation potential of PAA-Gd has been evaluated on swine on a 3.0 T clinical MRI scanner. The current studies offer a promising strategy for precise diagnosis of vascular diseases.
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MICROCHIMICA ACTA
·
2023
·Vol. 190
·期 10
·1-13
·
IF 5.7
Bian Yu,Zhang Yuan,Liu Tong,Zhang Feng,Gao Hui-yuan
A novel imine-linked magnetic covalent organic polymer, Fe 3 O 4 @TAB-TFPT, was synthesized using environmentally friendly deep eutectic solvents as the reaction medium instead of conventional organic solvents. The materials were characterized by scanning electron microscope (SEM), transmission electron microscopy (TEM), FT-IR, N 2 adsorption-desorption isotherms, energy dispersive spectrometer (EDS), X-ray photoelectron spectra (XPS), and thermo gravimetric analysis (TGA). Subsequently, the materials were employed as an adsorbent for magnetic solid-phase extraction (MSPE) of flavonoids, including Kurarinone, Norkurarinone, Xanthohumol, and Isoxanthohumol, prior to their determination by HPLC–MS/MS. The validation results demonstrate good linearity within the concentration range 0.1–1000 ng∙mL −1 ( R 2 ≥ 0.9963), high enrichment factors ranging from 18.9 to 30.7, and low LODs (0.01–0.05 ng∙mL −1 ) and LOQs (0.05–0.1 ng∙mL −1 ). Furthermore, recoveries between 80.60% and 108.40% with relative standard deviations ≤ 8.49% were achieved. The proposed MSPE-HPLC–MS/MS method was successfully applied to the determination of flavonoids in Sophora flavescens Aition sample. Graphical Abstract
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Journal of Coatings Technology and Research
·
2023
·
IF 2.3
Zhao Chengshou,Jiang Yisong,Fu Wang,Liu Zhuangyuan,Liu Siyuan,Peng Huaqiao,Esmaeili Nima
A novel epoxy-based self-intumescent fire protective coating has been developed by formulating a combination of ammonium polyphosphate (APP) and copper (I) oxide (Cu 2 O) in epoxy resin (EP). The effects of various combinations on fire protective performance for steel plate were evaluated using a lab-scale simulated big panel test. Formulations with different mass ratios of APP to Cu 2 O ranging from 10:0 to 2:8 exhibit good fire protective performance for steel plate. While the final equilibrium backside temperature of un-protected steel plate reached 529 °C, it did not exceed 282 °C for the protected plates with 2 mm thick coatings, which is much lower than the failure temperature of steel (ca. 500 °C). The lowest final equilibrium backside temperature of coated steel plate was 234.5 °C for the optimal formulation (EP/24APP/16Cu 2 O) with an APP/Cu 2 O mass ratio of 6/4 in EP. Interestingly, the limiting oxygen index (LOI) value (46.8%) for the optimized formulation (EP/24APP/16Cu 2 O) is not the highest, being lower than those of (EP/40APP/0Cu 2 O) and (EP/32APP/8Cu 2 O) formulations. The fire behavior of the optimized formulation (EP/24APP/16Cu 2 O) and control EP was compared using the cone calorimetry. The main fire hazard parameters such as peak heat release rate, total smoke production and peak CO production for EP/24APP/16Cu 2 O are reduced by 80.0%, 59.5% and 75.0%, respectively, relative to those for EP. This indicates that the EP/24APP/16Cu 2 O formulation provides significantly better fire safety than does control EP alone. A possible mode of action for the combination of APP/Cu 2 O in terms of the expansion ratio and heat insulation degree of the formed intumescent char layer may be proposed. Thus, this work contributed a reference for developing intumescent fire protective coating with high fire safety.
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