BIOTECHNOLOGY AND APPLIED BIOCHEMISTRY
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2019
·Vol. 66
·期 5
·787-793
·
IF 1.559
Li Tao,Ying Gu,Jian Zheng,Jinkun Yang,Yingjie Zhu
Evidence suggests that Weichang'an (WCA) inhibited the metastasis of colorectal cancer (CRC) in vitro and downregulates oncogenic β-catenin; more intriguingly, we also found an upregulation of ARHGAP25 in this process. This study aimed to investigate the mechanisms by which WCA regulated CRC metastasis in vitro . Here, HCT116 cells were transfected with siRNAs to interfere ARHGAP25 expression. WCA decoction, XAV939 (a specific Wnt/β-catenin pathway inhibitor), and LiCl (an activator for Wnt/β-catenin pathway) were used for treatment. Cell migratory and invasive capacities were determined using Transwell chamber. The activation of Wnt/β-catenin pathway was assessed by determining the expression of MMP7, MMP9, ZEB1, and β-catenin. The study suggests that WCA inhibited the migration and invasion of HCT116 cells and suppressed the activation of Wnt/β-catenin pathway, as evidenced by retarding MMP7, MMP9, ZEB1, and β-catenin. However, siRNA–ARHGAP25 resulted in the opposite. In siRNA–ARHGAP25-transfected HCT116 cells, WCA (0.4 mg/mL) induced the antimetastatic effects and the inactivation of Wnt/β-catenin pathway was remarkably reversed with additional LiCl treatment. Our study concludes that inhibiting Wnt/β-catenin pathway while promoting ARHGAP25 was the mechanism, whereby WCA retarded migration and invasion of CRC in vitro .
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ANALYTICA CHIMICA ACTA
·
2020
·
IF 5.977
Yu Wang,Xudong Zhao,Man Zhang,Xuan Sun,Jialei Bai,Yuan Peng,Shuang Li,Dianpeng Han,Shuyue Ren,Jiang Wang,Tie Han,Yifei Gao,Baoan Ning,Zhixian Gao
Environmental endocrine disruptors in the environment and food, especially 17 β-estradiol (E2), are important factors affecting the growth and development of organisms. In this research, we constructed a fluorescence strategy for two-step amplification that combined two currently popular methods, exponential amplification reaction (EXPAR) and hybridization chain reaction (HCR). E2 competed with the complementary DNA (cDNA) to bind the aptamer modified on the magnetic beads. The free complementary strand in the supernatant was used as a trigger sequence to activate EXPAR, producing a large amount of short single-stranded DNA (ssDNA). The amplified ssDNA can trigger the second HCR amplification, producing many long double-stranded DNA (dsDNA) analogues. According to the principle of fluorescence resonance energy transfer , the carboxyfluorescein (FAM) signals in H1 and H2 hairpins were quenched by black hole quencher (BHQ-1). After the addition of E2 and initiation of amplification, the initially quenched fluorescent signal would be restored. This strategy with a detection limit of 0.37 pg mL −1 (S/N = 3) showed a good linear relationship in the range of 0.4–800 pg mL −1 . In addition, the recovery rates of the method for milk and water samples were 98.55%–116.95% and 92.32%–107.00%, respectively. This is the first report of the combined detection of EXPAR and HCR, providing a reference for rapid and highly sensitive detection using multiple isothermal amplification methods.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2018
·
IF 3.141
Junhui Rong,Juan Han,Yang Zhou,Lei Wang,Chunmei Li,Yun Wang
In enzymatic conversion of biomass, how to degrade cellulose into fermentable glucose in an economic, efficient, and clean way has become an important subject. As for the application of cellulase in cellulose degradation, the process optimization in enzyme engineering is urgently desired. The traditional multistep purification processes lead to rising production costs and reduced activity of cellulase; meanwhile, the difficulty in reusability of cellulase has also become a big baffle in the cost-effective application of cellulase in biomass degradation. In this paper, the biocatalyst Glu-linker-ELP-GB (GLEGB) containing binary tags, elastin-like polypeptide (ELP), and graphene-binding (GB), was constructed to simplify the purification and immobilization of β-glucosidase (Glu) from Coptotermes formosanus. A high recovery rate (97.2%) and purification fold (18.7) of GLEGB was obtained by only one round of inverse transition cycling (ITC) with 0.5 M (NH4)2SO4 at 25 °C in a short incubating time of 10 min. The purification performance of the one-round ITC method is superior to the commonly used Ni-NTA resin affinity method. Furthermore, the high loading amounts of GLEGB immobilized on GO (698.2 mg g–1) and C3N4 (527.3 mg g–1) were achieved by the synergistic effects of ELP and GB tags. The storage stability and thermal stability of GLEGB was significantly enhanced after immobilization. The recombinant GLEGB immobilized on GO, MGO, graphite, C3N4, C200, and C400 retained 71.4%, 69.5%, 75.1%, 61.2%, 73.5%, and 80.2% of their initial activities respectively after eight cycles. It is worth mentioning that the Km values of GLEGB immobilized on lamellar carbon materials including GO, MGO, and C3N4 are very close to free GLEGB, showing a high affinity of recombinant GLEGB to substrate. To our knowledge, this is the first report on enzyme-linker-ELP-GB system with wide application prospect in the efficient purification and immobilization of enzyme, which can achieve the goal of reducing cost and improving efficiency of biocatalyst in enzymatic conversion of biomass.
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PHYTOMEDICINE
·
2023
·
IF 7.9
Jiong Wang,Chenchen Qian,Yue Chen,Tianyang Jin,Yongsheng Jiang,Lijiang Huang,Xinyan Fu,Dong Yang,Leiming Jin,Bo Jin,Yi Wang
ABSTRACT Background Hyperglycemic induced cardiac hypertrophy and cardiac inflammation are important pathological processes in diabetic cardiomyopathy. β-elemene (Ele) is a natural compound extracted from Curcuma Rhizoma and has anti-tumor effects. It also has therapeutic effects in some inflammatory diseases. However, the therapeutic effect of Ele on diabetic cardiomyopathy is not clear. The purpose of this study was to evaluate the effect of Ele on hyperglycemia-caused cardiac remodeling and heart failure. Methods C57BL/6 mice were intraperitoneally injected with streptozotocin to induce DCM, and Ele was administered intragastric after 8 weeks to investigate the effect of Ele. RNA sequencing of cardiac tissue was performed to investigate the mechanism. Results Ele markedly inhibited cardiac inflammation, fibrosis and hypertrophy in diabetic mice, as well as in high glucose-induced H9c2 cells. RNA sequencing showed that cardioprotective effect of Ele involved the JAK/STAT3-NF-κB signaling pathway. Ele alleviated heart and cardiomyocyte inflammation in mice by blocking diabetes-induced JAK2 and STAT3 phosphorylation and NF-κB activation. Conclusions The study found that Ele preserved the hearts of diabetic mice by inhibiting JAK/STAT3 and NF-κB mediated inflammatory responses, suggesting that Ele is an effective therapy for DCM.
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Journal of Materials Chemistry B
·
2016
·Vol. 4
·期 22
·3903-3910
·
IF 4.872
Genxing Zhu,Ruibo Zhao,Yaling Li,Ruikang Tang
Multifunctional Gd,Ce,Tb co-doped β-tricalcium phosphate (TCP) porous nanospheres are prepared by a facile solvothermal strategy with trimethyl phosphate as the phosphorus source. The as-prepared nanomaterial (average diameter of 100 nm) has a multiple level pore size distribution with the specific surface area of 124.33 m2 g−1, which benefits drug loading. Its photoluminescent and magnetic multifunctions are realized by the co-doping of Gd3+, Ce3+ and Tb3+ ions, which make the nanomaterial promising for both fluorescence and magnetic resonance imaging techniques. Furthermore, the nanomaterial exhibits excellent cytocompatibility and a relatively high doxorubicin loading capacity as well as sustained pH-sensitive drug release behaviour. It is suggested that the Gd,Ce,Tb co-doped β-TCP porous nanospheres are promising for applications in the biomedical fields such as multifunctional drug delivery systems and tissue engineering scaffolds with bioimaging guidance.
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Plants-Basel
·
2026
·Vol. 15
·期 19
·3049
·
IF 4.7
Lu Tong,Yi Zhao,Hao Zhang,Yuanxin Ding,Ruofan Wu,Shiyao Xu,Qianrong Zhang,Xiaomin Song,Rensen Zeng,Xianhui Lin
Herbivore-induced plant volatiles (HIPVs) are well recognized for their ability to recruit natural enemies of insect herbivores; however, their function in priming plant anti-herbivore defenses remains poorly elucidated. Here, we demonstrate that volatile exposure to a commercial β-ocimene isomer mixture (hereinafter referred to as β-ocimene) enhances anti-herbivore defense responses in tomato (Solanum lycopersicum) against the polyphagous lepidopteran pestSpodoptera litura(Fabricius). Larval infestation byS. liturasignificantly upregulated the expression of ten terpene synthase (TPS) genes that govern the biosynthesis of four dominant monoterpene HIPVs: β-ocimene, (-)-α-phellandrene, myrcene, and limonene. Preliminary bioassays revealed that pre-exposure to these four monoterpenes significantly enhances tomato resistance toS. lituralarvae, with β-ocimene exhibiting the most pronounced effect. A 24 h pre-exposure to β-ocimene substantially augmented tomato antiherbivore resistance, and this protective response persisted for up to 10 days. Biochemical and molecular analyses revealed that pre-exposure to β-ocimene elevated the endogenous accumulation of jasmonic acid (JA) and jasmonoyl-isoleucine, along with increased transcript levels of the JA biosynthetic genesLOXDandAOS. Consistently, the JA biosynthesis-deficient mutantspr8failed to exhibit strengthened antiherbivore resistance upon β-ocimene pre-exposure. Collectively, our results demonstrate that β-ocimene pre-exposure enhances tomato antiherbivore resistance via activating JA biosynthesis, highlighting the potential ecological function of HIPVs in priming plant defense against insect pests.
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Journal of Functional Foods
·
2017
·
IF 3.144
Wei Liu,Jian Wang,David Julian McClements,Liqiang Zou
β-carotene was encapsulated in biopolymer microparticles formed by electrostatic complexation to improve its water-solubility, chemical stability, and bioavailability characteristics. The β-carotene-loaded microparticles had a particle size (1.87 ± 0.03 μm) larger than that of caseinate emulsions (0.48 ± 0.01 μm) ( P < .05). Microparticles were stable to aggregation over a wide pH range (3–7) and at high salt levels (0–1000 mM NaCl), and protected β-carotene from degradation during storage. For instance, around 32% carotenoid was retained after 42 days storage at 25 °C in the microparticles, whereas <10% was retained in the emulsions. An in vitro digestion experiment showed that the β-carotene in microparticles had a higher bioaccessibility and chemical stability (67.57 ± 2.72% and 80.03 ± 1.95%, respectively) than in emulsions (30.03 ± 1.87% and 70.87 ± 1.52%, respectively) ( P < .05). These results may facilitate the design of nutraceutical delivery systems for application in food, supplement, and pharmaceutical products.
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SENSORS AND ACTUATORS B-CHEMICAL
·
2023
·
IF 8.4
Yi-Min Shan,Li-Na Zhang,Si-Xian Wu,Xiao-Liang Li,Hong Zhang,Fei-Fan Xiang,Fan-Yuan Yu,Yan-Hong Liu,Xiao-Qi Yu,Kun Li,Wen-Ming Xu,Kang-Kang Yu
β -galactosidase has become the most widely used bio-marker in cellular senescence, however, it is unknown whether there are same changes in β -galactosidase activity during sperm senescence. Understanding the changes in such indicator during sperm senescence is important for sperm sorting and in vitro fertilization. Herein, we developed a NIR probe Si-βGal-P by using silicon xanthene as fluorophore . Si-βGal-P showed a good affinity to β -galactosidase together with high specificity and strong anti-interference ability. And Si-βGal-P was proved to be able to assess β -galactosidase in three different replicate senescence models. Besides, Si-βGal-P could easily pass blood-brain barrier and successfully imaged the up-regulated β -galactosidase activity in 34-week-old mouse brain. In addition, Si-βGal-P was successfully applied to hydrogen peroxide-induced premature sperm and visualized the up-regulated β -galactosidase activity for the first time, providing sperm senescence with a valid labeling tool.
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JOURNAL OF POWER SOURCES
·
2019
·
IF 7.467
Qiyao Guo,Jihuai Wu,Yuqian Yang,Xuping Liu,Jinbiao Jia,Jia Dong,Zhang Lan,Jianming Lin,Miaoliang Huang,Yuelin Wei,Yunfang Huang
The introduction of upconversion materials as spectral converter into photovoltaic devices to harvest and convert near infrared photons to visible photons that can thus be absorbed by perovskite layer is a promising strategy for enhancing the performance of perovskite solar cells . Hence, β-NaYF 4 :Yb 3+ /Er 3+ /Sc 3+ @NaYF 4 rare-earth doped upconversion nanoparticles with core-shell structure are synthesized. The doped rare-earth ions Yb 3+ and Er 3+ convert near infrared light to red and green light, and the Sc 3+ ions enhance the upconversion luminescence efficiency, which broaden the absorption range of solar irradiation and generate extra photocurrent in the solar cells. The surface defects of β-NaYF 4 :Yb 3+ /Er 3+ /Sc 3+ is passivated by the even NaYF 4 shell, which results in the obvious enhancement in upconversion emission intensity. Consequently, the perovskite solar cell based on the rare-earth doped upconversion nanoparticle mesoporous layer achieves a high power conversion efficiency of 20.19%, while the device based on TiO 2 mesoporous layer gets an efficiency of 17.44%.
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FOOD HYDROCOLLOIDS
·
2020
·
IF 7.053
Hao Yin,Chenxiao Wang,Jin Yue,Yun Deng,Shunshan Jiao,Yanyun Zhao,Jie Zhou,Ting Cao
Essential oils can be capsulated by cyclodextrin to enhance its thermal stability and preserve the bioactivity. In this study, 1,8-cineole was used as a guest molecule to prepare the cyclodextrin inclusion complexes (ICs). The formulation and processing parameters were optimized using the response surface methodology (RSM), and the optimal conditions were identified to be: 2.30 h of encapsulating time, 30.1 °C of encapsulating temperature and 0.99 of molar ratio of 1,8-cineole to HP-β-CD. The corresponding encapsulation efficiency and loading efficiency were 83.17% and 8.40%, respectively. The produced 1,8-cineole/HP-β-CD ICs was characterized by SEM, FTIR and TGA, and the results proved the enhanced thermal stability of IC. The release behavior and kinetics of IC was investigated and showed that at elevated temperature and relative humidity, the releasing rate of 1,8-cineole from the ICs increased and followed the Fick's law.
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RSC Advances
·
2021
·Vol. 11
·期 61
·38915-38924
·
IF 3.361
Peng Li,Xin Wang,Guifang Wang,Li Zhao,Yuwen Hong,Xianzhi Hu,Futing Zi,Huiling Cheng
Using Cr(VI) as the imprinted ions and 2-allyl-1,3-diphenyl-1,3-propanedione (ADPD) (a compound synthesized by independent design) as the functional monomer, a series of chromium ion-imprinted composite membranes (Cr(VI)-IICMs) and corresponding non-imprinted composite membranes (NICMs) were synthesized and tested. The results showed that the Cr(VI)-IICM10 membrane prepared under optimal experimental conditions exhibited a high adsorption capacity towards Cr(VI) (Q = 30.35 mg g−1) and a high imprinting factor (α = 2.70). The structural characteristics of Cr(VI)-IICM10 and NICM10 were investigated using FE-SEM, ATR-FTIR, and BET techniques combined with UV-Vis photometry and inductively coupled plasma emission spectrometry (ICP-OES) to evaluate the adsorption performance and permeation selectivity, while the effect on adsorption permeance of varying the experimental conditions including the solvent type, pH, and temperature was also investigated. The results showed that Cr(VI)-IICM10 is a mesoporous material with excellent permeation selectivity, reusability, and favorable pH response, and that its adsorption behavior is in accordance with the Langmuir model and pseudo-first-order kinetics. Thus, Cr(VI)-IICM10 shows great potential towards utilization as a “smart membrane” to control the separation and removal of Cr(VI) in wastewater, and also proved a reasonable design of the new functional monomer ADPD.
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PeerJ
·
2019
·
IF 2.353
Hongli Yin,Ji Ma,Jichun Han,Maoru Li,Jing Shang
Background Quercetin (Qr), isoquercitrin (IQ), and quercetin-3-O-β-D-glucuronide (QG) are powerful phytochemicals that have been shown to exhibit disease prevention and health promotion properties. However, there may exist transformations between Qr, IQ, and QG in vivo . And the pharmacokinetic profiles of Qr, IQ, and QG have not been systematically compared. The pharmacokinetics study would be helpful to better understand the pharmacological actions of them. Methods Herein, we developed a reliable HPLC-MS method to compare the pharmacokinetics of Qr, IQ, and QG after separate (50 mg/kg) oral administration of them in rats, using puerarin as internal standard. The detection was performed using negative selected ion monitoring. This method was validated in terms of selectivity, linearity, precision, accuracy, extraction recovery, matrix effect, and stability; and shows reliabilities in monitoring the pharmacokinetic behaviors of these three compounds. Results Our results showed that after separate oral administration of Qr, IQ, and QG, all of the compounds could be detected in plasma. In addition, QG could be detected in the Qr group; Qr and QG could be measured in the IQ group; and Qr could be found in rat plasma after 1.5 h of QG administration. Moreover, the AUC 0− t of Qr in the; Qr group (2,590.5 ± 987.9 mg/L*min), IQ group (2,212.7 ± 914.1 mg/L*min), and QG group (3,505.7 ± 1,565.0 mg/L*min) was larger than the AUC 0− t of QG in the; Qr group (1,550.0 ± 454.2 mg/L*min), IQ group (669.3 ± 188.3 mg/L*min), and QG group (962.7 ± 602.3 mg/L*min). The AUC 0− t of IQ was the lowest among all groups. Discussion Quercetin, IQ, and QG can all be absorbed into plasma. A mutual transformation exists between Qr and QG, and IQ can be metabolized into Qr and QG in SD rats. These results would provide a meaningful basis for understanding the pharmacological actions of these three compounds.
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