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Biomedical and Environmental Sciences 2019年第10期32卷 755-768页

作者： ZHANG Jia Yan XIAO Xiang DONG Ying ZHOU Xing Hua School of Food and Biological Engineering Jiangsu University

Objective To further explore associated effects of Lactobacillus plantarum dy-1(LFBE) on obesity and lipid metabolism at the gene expression level, the expression of micro RNAs(mi RNAs) was investigated in the liver of high-fat diet(HFD) induced obese rats.Methods Three groups of animal models were established. Changes in mi RNA expression in the liver of each group were analyzed by microarray and RT-q PCR, complemented by bioinformatics. Palmitateinduced hepatocellular carcinoma(Hep G2) cells were used as a model to validate the test.Results LFBE treatment groups and HFD groups were observed to be distinctly different with respect to rates of increase in body weight and body fat percentage and triglyceride(TG) and total cholesterol(TC) levels in serum and liver. In addition, the LFBE group showed upregulation of ten mi RNAs and downregulation of five mi RNAs in the liver. Downregulation of mi R-34 a and mi R-212 was observed in the livers of the LFBE group. Gene ontology and kyoto encyelopedia of geues and genomes(KEGG)pathway analysis showed that possible target genes of the deregulated mi RNAs were significantly enriched in the adrenergic and HIF-1 signaling pathways.Conclusion These results demonstrate that LFBE might regulate the expression of mi RNAs in order to inhibit obesity and fatty liver.

关键词： Fermented barley extract Lactobacillus plantarum dy-1 Anti-obesity Lipid metabolism miRNAs Microarray

Supplementation of Fermented Barley Extracts with Lactobacillus Plantarum dy-1 Inhibits Obesity via a UCP1-dependent Mechanism

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Biomedical and Environmental Sciences 2019年第8期32卷 578-591页

作者： XIAO Xiang BAI Juan LI Ming Song ZHANG Jia Yan SUN Xin Juan DONG Ying School of Food and Biological Engineering Jiangsu University

Objective We aimed to explore how fermented barley extracts with Lactobacillus plantarum dy-1(LFBE) affected the browning in adipocytes and obese rats.Methods In vitro, 3T3-L1 cells were induced by LFBE, raw barley extraction(RBE) and polyphenol compounds(PC) from LFBE to evaluate the adipocyte differentiation.In vivo, obese SD rats induced by high fat diet(HFD) were randomly divided into three groups treated with oral gavage:(a) normal control diet with distilled water,(b) HFD with distilled water,(c) HFD with 800 mg LFBE/kg body weight(bw).Results In vitro, LFBE and the PC in the extraction significantly inhibited adipogenesis and potentiated browning of 3T3-L1 preadipocytes, rather than RBE.In vivo, we observed remarkable decreases in the body weight, serum lipid levels, white adipose tissue(WAT) weights and cell sizes of brown adipose tissues(BAT) in the LFBE group after 10 weeks.LFBE group could gain more mass of interscapular BAT(IBAT) and promote the dehydrogenase activity in the mitochondria.And LFBE may potentiate process of the IBAT thermogenesis and epididymis adipose tissue(EAT) browning via activating the uncoupling protein 1(UCP1)-dependent mechanism to suppress the obesity.Conclusion These results demonstrated that LFBE decreased obesity partly by increasing the BAT mass and the energy expenditure by activating BAT thermogenesis and WAT browning in a UCP1-dependent mechanism.

关键词： Fermented barley Polyphenol compounds UCP1 Thermogenesis Browning

Stability and transepithelial transport of oligopeptide(KRQKYD)with hepatocyte-protective activity from Jinhua ham in human intestinal Caco-2 monolayer cells

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food Science and Human Wellness 2024年第3期13卷 1503-1512页

作者： Wen Nie Feiran Xu Kai Zhou Jieying Deng Ying Wang Baocai Xu engineering Research Center of Bio-process Ministry of EducationSchool of Food and Biological EngineeringHefei University of TechnologyHefei 230601China school of biological and food engineering Chuzhou UniversityChuzhou 239001China

The study evaluated the stability of an oligopeptide(Lys-Arg-Gln-Lys-Tyr-Asp,KRQKYD)and its transport mechanism by simulating gastrointestinal digestion and a model of human intestinal Caco-2 monolayer cells in vitro.In this study,the effects of environmental factors(temperature,pH and NaCl concentration)and simulated gastrointestinal digestion on the stability of KRQKYD were evaluated by indicators of the levels of alanine transaminase(ALT),aspartate transaminase(AST)and malondialdehyde(MDA)in an alcoholinduced hepatocyte injury model.The results showed that KRQKYD still maintained satisfactory hepatocyteprotective activity after treatment with different temperatures(20-80℃),pH(3.0-9.0),NaCl concentration(1%-7%)and simulated gastrointestinal digestion,which indicated that KRQKYD showed good stability to environmental factors and simulated gastrointestinal digestion.Furthermore,the intact KRQKYD could be absorbed in a model of Caco-2 monolayer cells with a P_(app)value of(9.70±0.53)×10^(-7)cm/s.Pretreatment with an energy inhibitor(sodium azide),a competitive peptide transporter inhibitor(Gly-Pro)and a transcytosis inhibitor wortmannin did not decrease the level of transepithelial KRQKYD transport,indicating that the transport mechanism of KRQKYD was not associated with energy dependent,vector mediated and endocytosis.The tight junction disruptor cytochalasin D significantly increased the level of transepithelial KRQKYD transport(P<0.05),suggesting that intact KRQKYD was absorbed by paracellular transport.

关键词： Jinhua ham KRQKYD(Lys-Arg-Gln-Lys-Tyr-Asp) Environmental stability Gastrointestinal digestive Transport mechanism

Fermented Barley Extracts with Lactobacillus plantarum dy-1 Rich in Vanillic Acid Modulate Glucose Consumption in Human HepG2 Cells

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Biomedical and Environmental Sciences 2018年第9期31卷 667-676页

作者： ZHANG Jia Yan XIAO Xiang DONG Ying ZHOU Xing Hua School of Food and Biological Engineering Jiangsu University

Objective To investigate the effect of fermented barley extracts with Lactobacillus plantarum dy-1（LFBE） for modulating glucose consumption in HepG2 cells via miR-212 regulation. Methods Hepatocellular carcinoma（HepG2） cells were treated with palmitate. After 12 h, palmitate-induced HepG2 cells were treated with LFBE and its main components. Changes in glucose consumption, proinflammatory cytokine secretion, and miRNA-212 expression in HepG2 cells was observed. Results Treatment with LFBE rich in vanillic acid（VA） increased glucose consumption and reduced proinflammatory cytokine secretion in HepG2 cells. LFBE and VA normalized the upregulation of miR-212, which led to the upregulation of dual-specificity phosphatase-9（DUSP9）, a direct target of miR-212, at both protein and mR NA levels. Downregulation of miR-212 markedly increased glucose consumption and reduced proinflammatory cytokine secretion by enhancing DUSP9 expression. Conclusion The results showed the benefit of LFBE and miR-212 downregulation in modulating glucose consumption and reducing proinflammatory cytokine secretion by targeting DUSP9. VA in LFBE was a strong regulator of palmitate-induced abnormal glucose consumption in HepG2 cells and can be a primary mediator.

关键词： Fermented barley extract Vanillic acid Glucose consumption HepG2 Dual-specificity phosphatase-9

Rapid quantification of acid value in frying oil using iron tetraphenylporphyrin fluorescent sensor coupled with density functional theory and multivariate analysis

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food Quality and Safety 2022年第4期6卷 534-544页

作者：顾海洋董艺凝吕日琴黄星奕陈全胜 Department of biological and Chemical engineering Yangzhou Polytechnic CollegeYangzhouChina school of Bio and food engineering Chuzhou UniversityChuzhouChina School of Food and Biological Engineering Jiangsu UniversityZhenjiangChina

A metalloporphyrin-based fluorescent sensor was developed to determine the acid value in frying oil.The electronic and structural performances of iron tetraphenylporphyrin(FeTPP)were theoretically investigated using time-dependent density functional theory and density functional theory at the B3LYP/LANL2DZ level.The quantified FeTPP-based fluorescent sensor results revealed its excellent performance in discriminating different analytes.In the present work,the acid value of palm olein was determined after every single frying cycle.A total of 10 frying cycles were conducted each day for 10 consecutive days.The FeTPP-based fluorescent sensor was used to quantify the acid value,and the results were compared with the chemical data obtained by conventional titration method.The synchronous fluorescence spectrum for each sample was recorded.Parallel factor analysis was used to decompose the three-dimensional spectrum data.Then,the support vector regression(SVR),partial least squares,and back-propagation artificial neural network methods were applied to build the regression models.After the comparison of the constructed models,the SVR models exhibited the highest correlation coefficients among all models,with 0.9748 and 0.9276 for the training and test sets,respectively.The findings suggested the potential of FeTPP-based fluorescent sensor in rapid monitoring of frying oil quality and perhaps also in other foods with higher oil contents.

关键词： Synchronous fluorescence spectrum fluorescent sensor oil quality density functional theory parallel factor analysis

Emerging markers for antimicrobial resistance monitoring

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中国化学快报:英文版 2023年第10期34卷 55-66页

作者： Zineng Yi Xiaona Xu Xiaohan Meng Congyu Liu Qianpeng Zhou Deyan Gong Zhengbao Zha School of Food and Biological Engineering Hefei University of TechnologyHefei 230009China

The appearance and spread of antibiotic-resistant pathogens known as antimicrobial resistance(AMR)is one of the major worldwide health crises that humanity have to deal with over the next decades.One of the main methods for addressing AMR is the effective screening for antimicrobial insensitivity in clinical and environmental monitoring.Current clinical laboratory procedures use traditional culturebased antibiotic susceptibility testing(AST)methods,which can take up to 24 h to identify which drug is suitable for the infection inhibition.Therefore,it is vital to develop novel strategies that offer quick,simple,affordable,reliable,sensitive and accurate AMR monitoring.Sensors for AMR markers detection could possess the essential qualities for quickly identifying resistant microorganisms and could give vital data for the selection of antibacterial drugs administration.This review offers a summary of the innovative application of these AMR markers detection strategies focusing on healthcare and environmental surveillance for the AMR genotypic or phenotypic assessment.

关键词： Antimicrobial resistance markers Genotypic determination Enzymes detection Antibody labeling Protein labeling

Cell membrane-coated nanoparticles for immunotherapy

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Chinese Chemical Letters 2022年第4期33卷 1673-1680页

作者： Hang Liu Zhaohua Miao Zhengbao Zha School of Food and Biological Engineering Hefei University of TechnologyHefei 230009China

Nanoparticle-based disease detection, prevention and therapies have gained increased interests in biomedical applications, owing to their significant advantages in therapeutic efficacy and safety. Nonetheless, suffering from the challenges including fast recognition and clearance of foreign nanoparticles by innate immune system before arriving at diseased regions, clinical applications of nanoparticles are usually intercepted. Among various strategies for reducing non-specific phagocytosis and enhancing diseasetargeting efficiency of nanoparticles, membrane coating nanotechnology exhibits great potential in the disease diagnosis and therapeutics due to both the structural and functional preservation of membrane proteins from source cells. Benefiting the inherited immune-regulation capacities, this review mainly summarized the latest development of such biomimetic nanoparticles for immunotherapy in treating immune-related diseases including microbial infections, inflammation, tumor and autoimmune diseases.

关键词： Biomimetic nanoparticles Immunotherapy Nanovaccine Cell membrane

Sesamol: a novel quorum sensing inhibitor and colistin accelerator against Pseudomonas aeruginosa

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food Science and Human Wellness 2024年

作者： Peng-Cheng Ji Kun-Yuan Yin Yue Jiang Yu-Lu Sun Wen-Qi Luo Jin-Wei Zhou School of Food and Biological Engineering Xuzhou University of Technology

We assessed the quorum sensing (QS) inhibitory impact of sesamol against the foodborne bacterium Pseudomonas aeruginosa. At concentrations ranging from 50 to 200 μg/mL， sesamol significantly inhibited the production of virulence factors such as protease， elastase， pyocyanin， rhamnolipid， and chemotaxis， and improved the susceptibility of bacterial and biofilm cells to colistin. Integrated transcriptomics， metabolomics， and docking analyses indicated that exposure to sesamol destroyed the QS system and down regulated the expressions of genes encoding virulence and antioxidant enzymes. The downregulation of genes encoding antioxidant enzymes intensified oxidative stress， as demonstrated by the enhancement of reactive oxygen species (ROS) and H2O2. The enhanced oxidative stress changed the components of the cell membrane， improved its permeability， and ultimately enhanced the susceptibility of bacterial and biofilm cells to colistin. Moreover， exposure to sesamol also led to the disorder of amino acid metabolism and energy metabolism， eventually attenuating the pathogenicity of P. aeruginosa. These findings indicated that sesamol can function as a potent anti-virulence agent to defend against food spoilage caused by P. aeruginosa.

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Antitumor Activities and Apoptosis-regulated Mechanisms of Fermented Wheat Germ Extract in the Transplantation Tumor Model of Human HT-29 Cells in Nude Mice

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Biomedical and Environmental Sciences 2015年第10期28卷 718-727页

作者： ZHANG Jia Yan XIAO Xiang DONG Ying WU Jing ZHOU Xing Hua School of Food and Biological Engineering Jiangsu University

Objective A subcutaneous transplantation tumor model of human HT-29 cells in nude mice was established to evaluate anticarcinogenic activities, and the apoptosis-regulated mechanism effect of aqueous extract of fermented wheat germ with Lactobacillus plantarum dy-1 （LFWGE）. Methods The HT-29 cells were transplanted via subcutaneous injection of 1×10^7cells into the right flank of each nude mouse. Then, nude mice were treated for 30 d with LFWGE （high-dose 2 g/kg/d; low-dose 1 g/kg/d） and for 7 d with 5-fluorouracil （5-FU, 25 mg/kg/d） by gavage and intraperitoneal injection, respectively. An inhibition of tumor growth was observed. Results Tumor volume and weights decreased significantly in both groups of nude mice treated with LFWGE. In addition, the cell apoptosis rate of the LFWGE group （2 g/kg/d, 60.2%＋4.4%; 1 g/kg/d, 58.6%＋6.9%） was significantly higher than that of the control group （11.5%＋1.6%） and 5-FU group （32.1%＋3.5%） as measured by the TUNEL assay. Moreover, the real-time fluorescent quantitative PCR and Western blot method further confirmed these enhancing apoptosis and growth inhibition effects. The involvement of LFWGE in inducing apoptosis was confirmed by the expression of Bax, Bcl-2, Caspase-3, and CyclinD1. Conclusion The results showed that LFWGE could induce subcutaneous transplantation tumor apoptosis in nude mice and could be as a natural nutrient supplements or chemopreventive agent in the treatment of human colon cancer.

关键词： Fermented wheat germ extract Nude mice Antitumor Apoptosis Western blot Human HT-29 cells

Dioscin from Polygonatum sibiricum induces apoptosis and autophagy in Ishikawa human endometrial cancer cell and in vivo

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food Science and Human Wellness 2023年

作者： Xiao-Li Li Run-Hui Ma Zhi-Jing Ni Wei Wang Kiran Thakur Jian-Guo Zhang Zhao-Jun Wei school of biological Science and engineering Collaborative Innovation Center for food Production and Safety North Minzu University School of Food and Biological Engineering Hefei University of Technology

With an aim to comprehend the precise regulatory mechanism of dioscin against endometrial carcinoma (EC)， we firstly extracted the components from Polygonatum sibiricum followed by identification and structural characterization. The anti-EC activity of dioscin was initially determined based on the inhibition of Ishikawa cell proliferation and tumor growth. The high-throughput sequencing data indicated that dioscin not only promoted apoptosis， including decrease of PARP and Bcl-2 and increase of c-PARP and Bad， but also induced autophagy， including increase of autophagic lysosomes and LC3II/LC3Ⅰ ratio. Mechanistic exploration suggested that dioscin induced autophagy and apoptosis through inhibition of PI3K/AKT/mTOR signaling pathway. Besides， the dioscin-regulated p53 pathway was mainly involved in autophagy induction. Furthermore， inhibition of Ishikawa cell autophagy was linked to dioscin-induced apoptosis. Our data suggest the immense potential of dioscin for the development of functional food for EC and related medical application.

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