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1A restoration-promoting integrated floating bed and its experimental performance in eutrophication remediation显示文摘Numerous studies on eutrophication remediation have mainly focused on purifying water first, then restoring submerged macrophytes. A restoration-promoting integrated floating bed(RPIFB) was designed to combine the processes of water purification and macrophyte restoration simultaneously. Two outdoor experiments were conducted to evaluate the ecological functions of the RPIFB. Trial 1 was conducted to compare the eutrophication purification among floating bed, gradual-submerging bed(GSB) and RPIFB technologies. The results illustrated that RPIFB has the best purification capacity. Removal efficiencies of RPIFB for TN, TP, NH+ 4-N, NO-3-N, CODCr, Chlorophyll-a and turbidity were 74.45%, 98.31%, 74.71%, 88.81%, 71.42%, 90.17% and 85%, respectively. In trial 2, influences of depth of GSB and photic area in RPIFB on biota were investigated. When the depth of GSB decreased and the photic area of RPIFB grew, the height of Potamogeton crispus Linn. increased, but the biomass of Canna indica Linn. was reduced. The mortalities of Misgurnus anguillicaudatus and Bellamya aeruginosa in each group were all less than 7%. All results indicated that when the RPIFB was embedded into the eutrophic water, the regime shift from phytoplankton-dominated to macrophyte-dominated state could be promoted. Thus, the RPIFB is a promising remediation technology for eutrophication and submerged macrophyte restoration.Yiming Guo Yunguo Liu Guangming Zeng Xinjiang Hu Xin Li Dawei Huang Yunqin Liu Yicheng Yin 2014Journal of Environmental Sciences2014,26,5:18
2MdGSTF6,activated by MdMYB1,plays an essential role in anthocyanin accumulation in apple显示文摘Anthocyanins are biosynthesized on the cytosolic surface of the endoplasmic reticulum and then transported into the vacuole for storage.Glutathione S-transferases(GSTs)are considered to be responsible for the transport of anthocyanins into the vacuole.However,the regulatory mechanisms of GSTs in plants are still unclear.Here,we performed a genome-wide analysis and identified 69 GST genes in apple.The expression of MdGSTF6 was positively correlated with the anthocyanin content(r=0.949)during‘Yanfu 8’fruit development.The overexpression of MdGSTF6 in the Arabidopsis thaliana tt19 mutant resulted in seedlings of 35S::MdGSTF6-GFP/tt19 that could accumulate anthocyanin and rescue its phenotype,suggesting that MdGSTF6 was an anthocyanin transporter.The silencing of MdGSTF6 affected anthocyanin accumulation in apple fruit.Moreover,the knockdown of MdGSTF6 by RNA interference in cultured‘Gala’seedlings inhibited anthocyanin accumulation.The interaction experiments showed that MdMYB1 could bind directly to the MdGSTF6 promoter to transcriptionally activate its expression.Collectively,our results demonstrate that MdGSTF6 encodes an important GST transporter of anthocyanins in apple fruit and provide evidence for the associated regulatory mechanisms.Therefore,MdMYB1 can not only regulate anthocyanin synthesis,but also control the transport of anthocyanin in apples.This information may be useful for further clarifying the regulation of anthocyanin transport in apple.Shenghui Jiang Min Chen Naibo He Xiaoliu Chen Nan Wang Qingguo Sun Tianliang Zhang Haifeng Xu Hongcheng Fang Yicheng Wang Zongying Zhang Shujing Wu Xuesen Chen 2019Horticulture Research2019,6,1:16
3Malus sieversii: the origin, flavonoid synthesis mechanism, and breeding of red-skinned and red-fleshed apples显示文摘Flavonoids play essential roles in human health.Apple(Malus domestica Borkh.),one of the most widely produced and economically important fruit crops in temperate regions,is a significant source of flavonoids in the human diet and is among the top nutritionally rated and most widely consumed fruits worldwide.Epidemiological studies have shown that the consumption of apples,which are rich in a variety of free and easily absorbable flavonoids,is associated with a decreased risk of various diseases.However,apple production is challenged by serious inbreeding problems.The narrowing of the hereditary base has resulted in apples with poor nutritional quality and low flavonoid contents.Recently,there have been advances in our understanding of the roles that Malus sieversii(Ledeb.)M.Roem has played in the process of apple domestication and breeding.In this study,we review the origin of cultivated apples and red-fleshed apples,and discuss the genetic diversity and construction of the core collections of M.sieversii.We also discuss current research progress and breeding programs on red-skinned and red-fleshed apples and summarize the exploitation and utilization of M.sieversii in the breeding of high-flavonoid,and red-fleshed apples.This study highlights a valuable pattern of horticultural crop breeding using wild germplasm resources.The future challenges and directions of research on the molecular mechanisms of flavonoid accumulation and high-flavonoid apple breeding are discussed.Nan Wang Shenghui Jiang Zongying Zhang Hongcheng Fang Haifeng Xu Yicheng Wang Xuesen Chen 2018Horticulture Research2018,5,1:15
4The acidic tumor microenvironment: a target for smart cancer nano-theranostics显示文摘The acidic tumor microenvironment(TME), which mainly results from the high glycolytic rate of tumor cells, has been characterized as a hallmark of solid tumors and found to be a pivotal factor participating in tumor progression. Recently, due to the increasing understanding of the acidic TME, it has been shown that the acidic TME could be utilized as a multifaceted target during the design of various pH-responsive nanoscale theranostic platforms for the precise diagnosis and effective treatment of cancers. In this article,we will give a focused overview on the latest progress in utilizing this characteristic acidic TME as the target of nano-theranostics to enable cancer-specific imaging and therapy. The future perspectives in the development of acidic TME-targeting nanomedicine strategies will be discussed afterwards.Liangzhu Feng Ziliang Dong Danlei Tao Yicheng Zhang Zhuang Liu 2018National Science Review2018,5,2:14
5Anti-HBV effect of liposome-encapsulated matrine in vitro ana in vivo显示文摘AIM: To study the anti-HBV effect of liposome-encapsulated matrine (Lip-M) in vitro and in vivo.METHODS: 2.2.15 cell line was cultured in vitro to observe the effect of Lip-M and matrine on the secretion of HBsAg and HBeAg. The toxicity of Lip-M and matrine to 2.2.15 cell line was also studied by MTT method. In in vivo study,drug treatment experiment was carried out on the 13th day after ducks were infected with duck hepatitis B virus (DHBV). The ducks were randomly divided into 4 groups with 5-6 ducks in each group. Lip-M and matrine were given to DHBV-infected ducks respectively by gastric perfusion. Four groups were observed: group of Lip-M (20 mg/kg), group of Lip-M (10 mg/kg), group of matrine (20 mg/kg) and group of blank model. The drug was given once daily for 20 d continuously, and normal saline was used as control. The blood was drawn from the posterior tibial vein of all ducks before treatment (T0), after the medication for 5 (T5), 10 (T10), 15 (T15), 20 (T20) d and withdrawl of the drug for 3 d (P3). The serum samples were separated and stored at -70 ℃, DHBV-DNA was detected by the dot-blot hybridization.RESULTS: After addition of Lip-M and matrine to 2.2.15cell line for eleven d, the median toxic concentration (TC50)of Lip-M and matrine was 7.29 mg/mL and 1.33 mg/mL respectively. The median concentration (IC50) of Lip-M to inhibit HBsAg and HBeAg expression was 0.078 mg/mL and 3.35 mg/mL respectively. The treatment index (TI)value of Lip-M for HBsAg and HBeAg was 93.46 and 2.17respectively, better than that of matrine. The DHBVinfected duck model treatment test showed that the duck serum DHBV-DNA levels were markedly reduced in the group of Lip-M (20 mg/kg) after treated by gastric perfusion for 10, 15 and 20 d (0.43±0.22 vs0.95±0.18,t= 4.70, P= 0.001<0.01.0.40±0.12 vs0.95±0.18, t= 6.34,P= 0.000<0.01. 0.22±0.10 vs 0.95±0.18, t= 8.30,P = 0.000<0.01), compared to the group of matrine (20 mg/kg) (0.43±0.22 vs0.79±0.19, t= 3.17, P= 0.01<0.05.0.40±0.12 vs0.73±0.24, t= 3.21, P= 0.009<0.05.0.22±0.10vs0.55±0.32, t= 2.27, P = 0.046<0.05.), and the control (0.43±0.22 vs 0.98±0.29, t = 3.68, P = 0.005<0.01.0.40±0.12 vs0.97±0.30, t= 4.26, P= 0.002<0.01.0.22±0.10vs0.95±0.27, t= 5.76, P= 0.000<0.01). After the treatment for 20 d and withdrawl of the drug for 3 d, duck serum DHBV-DNA level in the group of Lip-M (10 mg/kg) markedly reduced (0.56±0.26 vs 0.95±0.38, t = 5.26, P = 0.003<0.05.0.55±0.25 vs 0.95±0.38, t = 5.52, P = 0.003<0.05), and the difference was significant as compared with the control (0.56±0.26 vs 0.95±0.27, t = 2.37, P = 0.042<0.05.0.55±0.25 vs0.89±0.18, t= 2.55, P= 0.031<0.05), but not significant as compared with the group of matrine (20 mg/kg).After withdrawl of the drug for 3 d, the levels of DHBV-DNA did not relapse in both groups of Lip-M.CONCLUSION: Lip-M can evidently inhibit the replication of hepatitis B virus in vitro and in vivo; its anti-HBV effect is better than that of matrine.Chang-QingLi Yu-TongZhu Feng-XueZhang Lin-ChunFu Xiao-HuiLi YiCheng Xiang-YangLi 2005World Journal of Gastroenterology2005,11,3:12
6Personalized targeted therapy for esophageal squamous cell carcinoma显示文摘Esophageal squamous cell carcinoma continues to heavily burden clinicians worldwide. Researchers have discovered the genomic landscape of esophageal squamous cell carcinoma, which holds promise for an era of personalized oncology care. One of the most pressing problems facing this issue is to improve the understanding of the newly available genomic data, and identify the driver-gene mutations, pathways, and networks. The emergence of a legion of novel targeted agents has generated much hope and hype regarding more potent treatment regimens, but the accuracy of drug selection is still arguable. Other problems, such as cancer heterogeneity, drug resistance, exceptional responders, and side effects, have to be surmounted. Evolving topics in personalized oncology, such as interpretation of genomics data, issues in targeted therapy, research approaches for targeted therapy, and future perspectives, will be discussed in this editorial.Xiaozheng Kang Keneng Chen Yicheng Li Jianying Li Thomas A D'Amico Xiaoxin Chen 2015World Journal of Gastroenterology2015,21,25:10
7Two gap-free reference genomes and a global view of the centromere architecture in rice显示文摘Rice(Oryza sativa),a major staple throughout the world and a model system for plant genomics and breeding,was the first crop genome sequenced almost two decades ago.However,reference genomes for all higher organisms to date contain gaps and missing sequences.Here,we report the assembly and analysis of gap-free reference genome sequences for two elite O.sativa xian/indica rice varieties,Zhenshan 97 and Minghui 63,which are being used as a model system for studying heterosis and yield.Gap-free reference genomes provide the opportunity for a global view of the structure and function of centromeres.We show that all rice centromeric regions share conserved centromere-specific satellite motifs with different copy numbers and structures.In addition,the similarity of CentO repeats in the same chromosome is higher than across chromosomes,supporting a model of local expansion and homogenization.Both genomes have over 395 non-TE genes located in centromere regions,of which∼41%are actively transcribed.Two large structural variants at the end of chromosome 11 affect the copy number of resistance genes between the two genomes.The availability of the two gap-free genomes lays a solid foundation for further understanding genome structure and function in plants and breeding climate-resilient varieties.Jia-Ming Song Wen-Zhao Xie Shuo Wang Yi-Xiong Guo Dal-Hoe Koo Dave Kudrna Chenbo Gong Yicheng Huang Jia-Wu Feng Wenhui Zhang Yong Zhou Andrea Zuccolo Evan Long Seunghee Lee Jayson Talag Run Zhou Xi-Tong Zhu Daojun Yuan Joshua Udall Weibo Xie Rod AWing Qifa Zhang Jesse Poland Jianwei Zhang Ling-Ling Chen 2021Molecular Plant2021,14,10:9
8Rat model of cholelithiasis with human gallstones implanted in cholestasis-induced virtual gallbladder显示文摘AIM:To facilitate translational research on cholelithiasis,we have developed a rat model of human gallstones by exploiting the unique biliopancreatic features of this species.METHODS:Under anesthesia,16 adult rats of equal genders underwent two times of abdominal surgery.First,their common bile duct(CBD)was ligated to cause cholestasis by total biliary obstruction(TBO).On day 0,1,3,7,14,21 and 28 after TBO,magnetic resonance imaging(MRI)was conducted to monitor the dilatation of the CBD,and blood was sampled to analyze total serum bilirubin(TSB).Secondly,on day 30,the abdomen was re-opened and gallstone(s)collected from human patients were implanted in the dilated CBD asa virtual gallbladder(VGB),which was closed by suture ligation.This rat cholelithiasis model was examined by MRI,clinical observation,microcholangiography and histology.RESULTS:All rats survived two laparotomies.After ligation,the CBD was dilated to a stable size of 4 to30 mm in diameter on day 21-28,which became a VGB.The rats initially showed signs of jaundice that diminished over time,which paralleled with the evolving TSB levels from 0.6±0.3 mg/d L before ligation,through a peak of 10.9±1.9 mg/dL on day 14,until a nearly normalized value after day 28.The dilated CBD with thickened wall allowed an incision for implantation of human gallstones of 1-10 mm in diameter.The rat cholelithiasis was proven by in vivo MRI and postmortem microcholangiography and histomorphology.CONCLUSION:A rat model cholelithiasis with human gallstones has been established,which proves feasible,safe,reliable,nontoxic and cost-effective.Given the gallstones of human origin,applications of this model may be of help in translational research such as optical detection and lysis of gallstones by systemic drug administration.Marlein Miranda Cona Yewei Liu Ting Yin Yuanbo Feng Feng Chen Stefaan Mulier Yue Li Jian Zhang Raymond Oyen Yicheng Ni 2016World Journal of Methodology2016,6,2:7
9MicroRNAs in heart and circulation during physical exercise显示文摘Exercise training is beneficial to the cardiovascular system. MicroRNAs(miRNAs, miRs) are a class of conserved non-coding RNAs and play a wide-ranging role in the regulation of eukaryotic gene expression. Exercise training alters the expression levels of large amounts of miRNAs in the heart. In addition, circulating miRNAs appear to be regulated by exercise training. In this review, we will summarize recent advances in the regulation of miRNAs during physical exercise intervention in various cardiovascular diseases, including pathologic cardiac hypertrophy, myocardial fibrosis, ischemia-reperfusion injury, myocardial infarction, and heart failure. The regulatory role of circulating miRNAs after exercise training was also reviewed. In conclusion, miRNAs might be a valuable target for treatment of cardiovascular diseases and have great potential as biomarkers for assessment of physical performance.Lijun Wang Yicheng Lv Guoping Li Junjie Xiao 2018Journal of Sport and Health Science2018,7,4:7
10WISH:wavefront imaging sensor with high resolution显示文摘Wavefront sensing is the simultaneous measurement of the amplitude and phase of an incoming optical field.Traditional wavefront sensors such as Shack-Hartmann wavefront sensor(SHWFS)suffer from a fundamental tradeoff between spatial resolution and phase estimation and consequently can only achieve a resolution of a few thousand pixels.To break this tradeoff,we present a novel computational-imaging-based technique,namely,the Wavefront Imaging Sensor with High resolution(WISH).We replace the microlens array in SHWFS with a spatial light modulator(SLM)and use a computational phase-retrieval algorithm to recover the incident wavefront.This wavefront sensor can measure highly varying optical fields at more than 10-megapixel resolution with the fine phase estimation.To the best of our knowledge,this resolution is an order of magnitude higher than the current noninterferometric wavefront sensors.To demonstrate the capability of WISH,we present three applications,which cover a wide range of spatial scales.First,we produce the diffraction-limited reconstruction for long-distance imaging by combining WISH with a large-aperture,low-quality Fresnel lens.Second,we show the recovery of high-resolution images of objects that are obscured by scattering.Third,we show that WISH can be used as a microscope without an objective lens.Our study suggests that the designing principle of WISH,which combines optical modulators and computational algorithms to sense high-resolution optical fields,enables improved capabilities in many existing applications while revealing entirely new,hitherto unexplored application areas.Yicheng Wu Manoj Kumar Sharma Ashok Veeraraghavan 2019Light(Science & Applications)2019,8,1:6
11MdMYB6 regulates anthocyanin formation in apple both through direct inhibition of the biosynthesis pathway and through substrate removal显示文摘Anthocyanin biosynthesis and sugar metabolism are important processes during plant growth,but the molecular interactions underlying these pathways are still unclear.In this work,we analyzed the anthocyanin and soluble sugar contents,as well as the transcript levels of transcription factors that are known to be related to the biosynthesis of anthocyanin in‘Hongcui 1’apple flesh during fruit development.Overexpression of MdMYB6 in red-fleshed calli was found to reduce anthocyanin content and result in downregulated expression of the MdANS and MdGSTF12 proteins.Yeast one-hybrid and electrophoretic mobility shift analyses showed that MdMYB6 could directly bind to the promoters of MdANS and MdGSTF12,indicating that MdMYB6 could inhibit anthocyanin biosynthesis by regulating MdANS and MdGSTF12.Overexpression of MdTMT1 in the Arabidopsis tmt1 mutant restored the glucose and fructose contents to the wild-type levels,while overexpression of MdTMT1 in red-fleshed calli increased the contents of glucose and fructose but reduced the contents of UDP-glucose,UDP-galactose,and anthocyanin.Using a GUS reporter system,yeast one-hybrid,chromatin immunoprecipitation-PCR and electrophoretic mobility shift analyses,we found that MdMYB6 could bind to the promoter of MdTMT1,resulting in increased promoter activity.Overexpression of MdMYB6 in calli overexpressing MdTMT1 increased the expression of MdTMT1,which led to reduced contents of UDP-glucose and UDP-galactose and decreased anthocyanin content compared to those of the calli that overexpressed MdTMT1.This finding suggested that MdMYB6 could also inhibit anthocyanin biosynthesis by regulating MdTMT1 to decrease the contents of UDP-glucose and UDP-galactose.Taken together,these results showed that MdMYB6 and MdTMT1 play key roles in both anthocyanin biosynthesis and sugar transport.Haifeng Xu Qi Zou Guanxian Yang Shenghui Jiang Hongcheng Fang Yicheng Wang Jing Zhang Zongying Zhang Nan Wang Xuesen Chen 2020Horticulture Research2020,7,1:6
12Viral MIPα homologous with human MIP-1α acts on HIV co-receptor CCR5显示文摘The function and usage of vMIPα encoded by K6 gene of herpesvirus 8 (HHV8) which has homology with human macrophage protein (MIP) have not been clearly known. In the present note the K6 gene of HHV8 was cloned and transfected into NIH3T3 cells and E. coli cells. Conditional media from the 3T3-transfected cells and K6 product vMIPa from E. coli. Cells were used to perform the experiments of ligand-receptor binding and cellular adhesion with peripheral blood macrophages. The conditional media and the purified vMIPa from E. coli could compete to bind to CCR5 located on macrophages from peripheral blood with I125-hMIP-1α chemokine of human. Cellular adhesion showed that the conditional media from transfected cells and the purified vMIPa did not induce the adhesion of macrophages from peripheral blood to ICAM-1. In conclusion, vMIPα encoded by K6 gene of HHV8 can bind to CCR5 of peripheral blood macrophage cells and does not induce their adhesion. This suggests that vMIPa enclosed CCR5, also known as HIVHanxiao Sun Lixia Feng Yicheng Li Wenfang He 2001Chinese Science Bulletin2001,46,15:6
13Amino Acid Composition and Functional Properties of Giant Red Sea Cucumber (Parastichopus californicus) Collagen Hydrolysates显示文摘Giant red sea cucumber (Parastichopus californicus) is an under-utilized species due to its high tendency to autolysis.The aim of this study was to evaluate the functional properties of collagen hydrolysates from this species.The degree of hydrolysis (DH),amino acid composition,SDS-PAGE,emulsion activity index (EAI),emulsion stability index (ESI),foam expansion (FE),and foam stability (FS) of hydrolysates were investigated.The effects of pH on the EAI,ESI FE and FS of hydrolysates were also inves-tigated.The results indicated that the β and α1 chains of the collagen were effectively hydrolyzed by trypsin at 50℃ with an En-zyme/Substrate (E/S) ration of 1:20 (w:w).The DH of collagen was up to 17.3% after 3 h hydrolysis with trypsin.The hydrolysates had a molecular weight distribution of 1.1 17 kDa,and were abundant in glycine (Gly),proline (Pro),glutamic acid (Glu),alanine (Ala) and hydroxyproline (Hyp) residues.The hydrolysates were fractionated into three fractions (< 3 kDa,3 10 kDa,and > 10 kDa),and the fraction of 3 10 kDa exhibited a higher EAI value than the fraction of > 10 kDa (P<0.05).The fraction of > 10 kDa had higher FE and FS values than other fractions (P<0.05).The pH had an important effect on the EAI,ESI,FE and FS.All the fractions showed undesirable emulsion and forming properties at pH 4.0.Under pH 7.0 and pH 10.0,the 3 10 kDa fraction showed higher EAI value and the fraction of > 10 kDa showed higher FE value,respectively.They are hoped to be utilized as functional ingredients in food and nutraceutical industries.LIU Zunying SU Yicheng ZENG Mingyong 2011Journal of Ocean University of China2011,10,1:5
14An Intramolecular Charge Transfer and Aggregation Induced Emission Enhancement Fluorescent Probe Based on 2-Phenyl-1,2,3-triazole for Highly Selective and Sensitive Detection of Homocysteine and Its Application in Living Cells显示文摘Summary of main observation and con elusion In this work,a new simple and readily synthesized turn-on probe 2-(4-anthracene-9-yl-phenyl)-2H-[l,2,3]triazole-4-carbaldehyde(APTC)was legitimately designed towards homocysteine(Hcy).Moreover,APTC has excellent optical properties such as intramolecular charge transfer(ICT)and aggregation induced emission enhancement(AIEE)characteristics,indicating its extensive application potentiality.What's more,APTC displayed rapid,high selectivity and specificity towards homocysteine over cysteine/glutathione.The detection limit of APTC for Hcy was as low as 2.198×10^-8 mol·L^-1,and the response time was only 5 min.APTC has been successfully applied to detect Hcy in silica gel plates and living cells,which indicates that APTC has good stability and biocompatibility as a selective probe for Hcy.Finally,the mechanism was studied using 1H NMR titration experiments and mass spectrometry.Yicheng Chu Zhengfeng Xie Daijiao Zhuang Yongshuang Yue Yuhua Yue Wei Shi Shun Feng 2019Chinese Journal of Chemistry2019,37,12:5
15Generation of 84-fs pulses from a mode-locked Tm:CNNGG disordered garnet crystal laser显示文摘A mode-locked laser based on a Tm:CNNGG disordered crystal as an active medium and a single-walled carbon nanotube saturable absorber is demonstrated, operating at a central wavelength of 2018 nm. Transformlimited 84 fs pulses are generated with an average output power of 22 mW at a repetition rate of ~90 MHz.A maximum output power of 98 mW is obtained at a slightly longer pulse duration of 114 fs.ZHONGBEN PAN YICHENG WANG YONGGUANG ZHAO HUALEI YUAN XIAOJUN DAI HUAQIANG CAI JI EUN BAE SUN YOUNG CHOI FABIAN ROTERMUND XAVIER MATEOS JOSEP MARIA SERRES PAVEL LOIKO UWE GRIEBNER VALENTIN PETROV 2018Photonics Research2018,6,8:4
16Effects of stress dependent electrochemical reaction on voltage hysteresis of lithium ion batteries显示文摘Intercalation of lithium ions into the electrodes of lithium ion batteries is affected by the stress of active materials, leading to energy dissipation and stress dependent voltage hysteresis. A reaction-diffusion-stress coupling model is established to investigate the stress effects under galvanostatic and potentiostatic operations. It is found from simulations that the stress hysteresis contributes to the voltage hysteresis and leads to the energy dissipation. In addition, the stress induced voltage hysteresis is small in low rate galvanostatic operations but extraordinarily significant in high rate cases. In potentiostatic operations, the stresses and stress induced overpotentials increase to a peak value very soon after the operation commences and decays all the left time. Therefore,a combined charge-discharge operation is suggested, i.e., first the galvanostatic one and then the potentiostatic one. This combined operation can not only avoid the extreme stress during operations so as to prevent electrodes from failure but also reduce the voltage hysteresis and energy dissipation due to stress effects.Haoliang LI Yicheng SONG Bo LU Junqian ZHANG 2018Applied Mathematics and Mechanics(English Edition)2018,39,10:3
17Autophagy receptor CCDC50 tunes the STING-mediated interferon response in viral infections and autoimmune diseases显示文摘DNA sensing and timely activation of interferon(IFN)-mediated innate immunity are crucial for the defense against DNA virus infections and the clearance of abnormal cells.However,overactivation of immune responses may lead to tissue damage and autoimmune diseases;therefore,these processes must be intricately regulated.STING is the key adaptor protein,which is activated by cyclic GMP-AMP,the second messenger derived from cGAS-mediated DNA sensing.Here,we report that CCDC50,a newly identified autophagy receptor,tunes STING-directed type I IFN signaling activity by delivering K63-polyubiquitinated STING to autolysosomes for degradation.Knockout of CCDC50 significantly increases herpes simplex virus 1(HSV-1)-or DNA ligand-induced production of type I IFN and proinflammatory cytokines.Ccdc50-deficient mice show increased production of IFN,decreased viral replication,reduced cell infiltration,and improved survival rates compared with their wild-type littermates when challenged with HSV-1.Remarkably,the expression of CCDC50 is downregulated in systemic lupus erythematosus(SLE),a chronic autoimmune disease.CCDC50 levels are negatively correlated with IFN signaling pathway activation and disease severity in human SLE patients.CCDC50 deficiency potentiates the cGAS-STING-mediated immune response triggered by SLE serum.Thus,our findings reveal the critical role of CCDC50 in the immune regulation of viral infections and autoimmune diseases and provide insights into the therapeutic implications of CCDC50 manipulation.Panpan Hou Yuxin Lin Zibo Li Ruiqing Lu Yicheng Wang Tian Tian Penghui Jia Xi Zhang Liu Cao Zhongwei Zhou Chunmei Li Jieruo Gu Deyin Guo 2021Cellular & Molecular Immunology2021,18,10:3
18Updated developments on molecular imaging and therapeutic strategies directed against necrosis显示文摘Cell death plays important roles in living organisms and is a hallmark of numerous disorders such as cardiovascular diseases, sepsis and acute pancreatitis. Moreover, cell death also plays a pivotal role in the treatment of certain diseases, for example, cancer. Noninvasive visualization of cell death contributes to gained insight into diseases, development of individualized treatment plans, evaluation of treatment responses, and prediction of patient prognosis. On the other hand, cell death can also be targeted for the treatment of diseases. Although there are many ways for a cell to die, only apoptosis and necrosis have been extensively studied in terms of cell death related theranostics. This review mainly focuses on molecular imaging and therapeutic strategies directed against necrosis. Necrosis shares common morphological characteristics including the rupture of cell membrane integrity and release of cellular contents, which provide potential biomarkers for visualization of necrosis and necrosis targeted therapy. In the present review, we summarize the updated joint efforts to develop molecular imaging probes and therapeutic strategies targeting the biomarkers exposed by necrotic cells. Moreover, we also discuss the challenges in developing necrosis imaging probes and propose several biomarkers of necrosis that deserve to be explored in future imaging and therapy research.Dongjian Zhang Meng Gao Qiaomei Jin Yicheng Ni Jian Zhang 2019Acta Pharmaceutica Sinica B2019,9,3:3
19A method of elevated temperatures coupled with magnetic stirring to predict real time release from long acting progesterone PLGA microspheres显示文摘The object of the study was to develop a quick and reproducible accelerated in vitro release method to predict and deduce the function of the real time(37 °C) release for long acting PLGA microspheres. The method could be described in several steps. First, the release of the microspheres were studied using the sample and separate method at 37 °C with normal orbital shaking and elevated temperatures with magnetic stirring to further accelerate the release. Second, the most similar profile at elevated temperatures with the real time release was chosen with the help of the n value in the fitted Korsmeyer-Peppas Function. Third,the Weibull function and conversion ratio were used to deduce the function of real time release according to the chosen profile at elevated temperatures. The key point in this study was to provide a quick and precise method to predict the real time release for long acting progesterone PLGA microspheres. So the elevated temperatures coupled with magnetic stirring were used to accelerate the release further, and when there have many similar release profiles with the real time release at elevated temperatures, releasing time at elevated temperatures and the R2 of the final deduced function will be used to help choosing the most similar release profile with the real time release. Four different types of progesterone PLGA microspheres were used to verify the method, and all the deduced function correlated well with the real time releases, for R2 = 0.9912, 0.9781, 0.9918 and 0.9972, respectively.Mingzhu Ye Hongliang Duan Lixia Yao Yicheng Fang Xiaoyu Zhang Ling Dong Feifei Yang Xinggang Yang Weisan Pan 2019Asian Journal of Pharmaceutical Sciences2019,14,2:3
20Impact of EV load uncertainty on optimal planning for electric vehicle charging station显示文摘With the development of electric vehicles(EV), there is a huge demand for electric vehicle charging stations(EVCS). The utilization of renewable energy sources(RES) in EVCS can not only decrease the energy fluctuation by participating in peakload reduction of the grid, but also reduce the pollution to the environment by cutting down the use of fossil fuels. In this paper,the optimal planning for grid-connected EVCS with RES is studied by considering EV load uncertainty. Nine scenarios are set based on a different characteristic of EV load to reveal the impact of EV load on net present cost(NPC) and to express the relationship between the optimal capacity and energy flow. Moreover, since electricity price also plays an important role in EVCS planning, an economic comparison between different cases with different electricity prices for peak-valley-flat period is carried out. The results reveal the economic benefits of applying RES in EVCS, and demonstrate that EV load with different characteristics would influence the capacity of each device(PV, battery, converter) in the EVCS optimal planning.LONG YiLin LI Yong WANG YaHui CAO YiJia JIANG Lin ZHOU YiCheng DENG YouYue NAKANISHI Yosuke 2021Science China(Technological Sciences)2021,64,11:3
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