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1Programmable time-domain digital-coding metasurface for non-linear harmonic manipulation and new wireless communication systems显示文摘Optical non-linear phenomena are typically observed in natural materials interacting with light at high intensities, and they benefit a diverse range of applications from communication to sensing. However,controlling harmonic conversion with high efficiency and flexibility remains a major issue in modern optical and radio-frequency systems. Here, we introduce a dynamic time-domain digital-coding metasurface that enables efficient manipulation of spectral harmonic distribution. By dynamically modulating the local phase of the surface reflectivity, we achieve accurate control of different harmonics in a highly programmable and dynamic fashion, enabling unusual responses, such as velocity illusion. As a relevant application, we propose and realize a novel architecture for wireless communication systems based on the time-domain digital-coding metasurface, which largely simplifies the architecture of modern communication systems, at the same time yielding excellent performance for real-time signal transmission. The presented work, from new concept to new system, opens new pathways in the application of metamaterials to practical technology.Jie Zhao Xi Yang Jun Yan Dai Qiang Cheng Xiang Li Ning Hua Qi Jun Chen Ke Guo Dong Bai Shuo Liu Shi Jin Andrea Alù Tie Jun Cui 2019National Science Review2019,6,2:46
2Effects of nitrogen level on yield and quality of japonica soft super rice显示文摘Although studies on the balance between yield and quality of japonica soft super rice are limited, they are crucial for super rice cultivation. In order to investigate the effects of nitrogen application rate on grain yield and rice quality, two japonica soft super rice varieties, Nanjing 9108(NJ 9108) and Nanjing 5055(NJ 5055), were used under seven N levels with the application rates of 0, 150, 187.5, 225, 262.5, 300, and 337.5 kg ha^(–1). With the increasing nitrogen application level, grain yield of both varieties first increased and then decreased. The highest yield was obtained at 300 kg ha^(–1). The milling quality and protein content increased, while the appearance quality, amylose content, gel consistency, cooking/eating quality, and rice flour viscosity decreased. Milling was significantly negatively related with the eating/cooking quality whereas the appearance was significantly positively related with cooking/eating quality. These results suggest that nitrogen level significantly affects the yield and rice quality of japonica soft super rice. We conclude that the suitable nitrogen application rate for japonica soft super rice, NJ 9108 and NJ 5055, is 270 kg ha^(–1), under which they obtain high yield as well as superior eating/cooking quality.ZHU Da-wei ZHANG Hong-cheng GUO Bao-wei XU Ke DAI Qi-gen WEI Hai-yan GAO Hui HU Ya-jie CUI Pei-yuan HUO Zhong-yang 2017Journal of Integrative Agriculture2017,16,5:31
3Diverse modes of clonal evolution in HBV-related hepatocellular carcinoma revealed by single-cell genome sequencing显示文摘Hepatocellular 癌(HCC ) 是癌症实质词法,基因并且 phenotypic 差异。然而,我们不理解在 intratumor 异质和肿瘤的联系词法 / 组织学的特征之间的关系。用介绍 96 个肿瘤房间(30-36 各个) 和 15 个正常的肝房间(5 各个) 的单个房间的整个染色体的定序,与联系 HBV 的 HCC 从三个男病人收集了,我们证实拷贝数字变化在 hepatocarcinogenesis 早发生,但是此后在整个肿瘤仍然保持相对稳定前进。重要地,我们证明特定的 HCC 能具有 monoclonal 或 polyclonal 起源。有汇合的 multinodular 形态学的肿瘤是典型 polyclonal 肿瘤并且显示最高的 intratumor 异质。除了 mutational 和拷贝数字侧面,我们把了用导出 HBV 的外国 genomic 标记的 HCC 的同种细胞的起源。在 monoclonal HCC,所有肿瘤单身者房间展出一样的 HBV 集成,显示 HBV 集成是一个早司机事件并且在肿瘤前进期间仍然保持极其稳定。另外,我们的结果显示那两个都转移,迟了的传播并且早播种当模特儿,在 HCC 有一个角色前进。尤其是,开始的克隆传播的早 intrahepatic 导致同步 multifocal 肿瘤的形成。同时,我们在 HCC 识别了潜在的司机基因 ZNF717,它展出变化的高频率在单个房间并且人口铺平,,通过调整 IL-6/STAT3 小径行动的肿瘤 suppressor。这些调查结果热点多重不同肿瘤在 HCC 的进化机制,它为特定的处理策略建议需要。Meng Duan, Shu Zhang, Zhichao Wang, Jieyi Shi, Longzi Liu, Xiaoying Wang, Aiwu Ke, Jian Zhou, Jia Fan, Qiang Gao Junfeng Hao, Chong Li Sijia Cui Daniel L Worthley Ya Cao Ruibin Xi Xiaoming Zhang Jian Zhou, Jia Fan Qiang Gao 2018Cell Research2018,28,3:21
4Precise nanomedicine for intelligent therapy of cancer显示文摘Precise nanomedicine has been extensively explored for efficient cancer imaging and targeted cancer therapy, as evidenced by a few breakthroughs in their preclinical and clinical explorations. Here, we demonstrate the recent advances of intelligent cancer nanomedicine, and discuss the comprehensive understanding of their structure-function relationship for smart and efficient cancer nanomedicine including various imaging and therapeutic applications, as well as nanotoxicity. In particular, a few emerging strategies that have advanced cancer nanomedicine are also highlighted as the emerging focus such as tumor imprisonment, supramolecular chemotherapy, and DNA nanorobot. The challenge and outlook of some scientific and engineering issues are also discussed in future development. We wish to highlight these new progress of precise nanomedicine with the ultimate goal to inspire more successful explorations of intelligent nanoparticles for future clinical translations.Huabing Chen Zhanjun Gu Hongwei An Chunying Chen Jie Chen Ran Cui Siqin Chen Weihai Chen Xuesi Chen Xiaoyuan Chen Zhuo Chen Baoquan Ding Qian Dong Qin Fan Ting Fu Dayong Hou Qiao Jiang Hengte Ke Xiqun Jiang Gang Liu Suping Li Tianyu Li Zhuang Liu Guangjun Nie Muhammad Ovais Daiwen Pang Nasha Qiu Youqing Shen Huayu Tian Chao Wang Hao Wang Ziqi Wang Huaping Xu Jiang-Fei Xu Xiangliang Yang Shuang Zhu Xianchuang Zheng Xianzheng Zhang Yanbing Zhao Weihong Tan Xi Zhang Yuliang Zhao 2018Science China Chemistry2018,61,12:19
5Calcium channel blockers reduce severe fever with thrombocytopenia syndrome virus (SFTSV) related fatality显示文摘Severe fever with thrombocytopenia syndrome (SFTS),an emerging tick-borne infectious disease caused by a novel phlebovirus (SFTS virus, SFTSV), was listed among the top 10 priority infectious diseases by the World Health Organization due to its high fatality of 12%-50% and possibility of pandemic transmission. Currently, effective anti-SFTSV intervention remains unavailable. Here, by screening a library of FDA-approved drugs, we found that benidipine hydrochloride, a calcium channel blocker (CCB), inhibited SFTSV replication in vitro. Benidipine hydrochloride was revealed to inhibit virus infection through impairing virus internalization and genome replication. Further experiments showed that a broad panel of CCBs, including nifedipine, inhibited SFTSV infection. The anti-SFTSV effect of these two CCBs was further an a lyzed in a humanized mouse model in which CCB treatment resulted in reduced viral load and decreased fatality rate. Importantly, by performing a retrospective clinical investigation on a large cohort of 2087 SFTS patients, we revealed that nifedipine administration enhaneed virus clearance, improved clinical recovery, and remarkably reduced the case fatality rate by >5-fold. These findings are highly valuable for developing potential host-oriented therapeutics for SFTS and other lethal acute viral infections known to be inhibited by CCBs in vitro.Hao Li Lei-Ke Zhang Shu-Fen Li Shao-Fei Zhang Wei-Wei Wan Yu-Lan Zhang Qi-Lin Xin Ke Dai Yuan-Yuan Hu Zhi-Bo Wang Xiang-Tao Zhu Yu-Jie Fang Ning Cui Pan-He Zhang Chun Yuan Qing-Bin Lu Jie-Ying Bai Fei Deng Geng-Fu Xiao Wei Liu Ke Peng 2019Cell Research2019,29,9:15
6Ginsenoside Rg1 enhances the resistance of hematopoietic stem/progenitor cells to radiation- induced aging in mice显示文摘Cui CHEN Xin-yi MU Yue ZHOU Ke SHUN Shan GENG Jun LIU Jian-wei WANG Jie CHEN Tin-yu LI Ya-ping WANG 2014Acta Pharmacologica Sinica2014,35,1:15
7Dermoscopy in China: current status and future prospective显示文摘Objective: Dermoscopy is a useful technique for improving the diagnostic accuracy of various types of skin disorders. In China, dermoscopy has been widely accepted, and domestic researchers have made tremendous progress in the field of dermoscopy. The main purpose of this review is to summarize the current status of dermoscopy in China and identify its future directions. Data sources: Articles included in this review were obtained by searching the following databases: Wanfang, China National Knowledge Infrastructure, PubMed, and the Web of Science. We focused on research published before 2019 with keywords including dermoscopy, dermoscopic, dermoscope and trichoscopy. Study selection: A total of 50 studies were selected. Of these studies, 20 studies were in Chinese and 30 in English, research samples of all the studies were collected from Chinese populations. Results: Since 2000, more than 380 articles about dermoscopy have been published in domestic or foreign journals. Dermoscopy can improve the diagnostic accuracy of neoplastic diseases, evaluating the therapeutic effect of treatment, and determining the treatment endpoint, and it can also assist in the differential diagnosis of inflammatory diseases and in the assessment of the severity of the disease. In addition, researches about the applications of dermoscopy during surgical treatment have been published. Training courses aiming to improve the diagnostic ability of dermatologists, either face-to-face or online, have been offered. The Chinese Skin Image Database, launched in 2017 as a work platform for dermatologists, has promoted the development of dermoscopy in China. Computer-aided diagnostic systems based on the Chinese population are ready for use. In the future, cooperation, resource sharing, talent development, image management, and computer-aided diagnosis will be important directions for the development of dermoscopy in China. Conclusion: Dermoscopy has been widely used and developed in China, however, it still needs to address more challenges in the future.Xue Shen Rui-Xing Yu Chang-Bing Shen Cheng-Xu Li Yan Jing Ya-Jie Zheng Zi-Yi Wang Ke Xue Feng Xu Jian-Bin Yu Ru-Song Meng Yong Cui 2019Chinese Medical Journal2019,,17:15
8Radiofrequency ablation for hepatic hemangiomas: A consensus from a Chinese panel of experts显示文摘Recent studies have shown that radiofrequency(RF) ablation therapy is a safe, feasible, and effective procedure for hepatic hemangiomas, even huge hepatic hemangiomas. RF ablation has the following advantages in the treatment of hepatic hemangiomas: minimal invasiveness, definite efficacy, high safety, fast recovery, relatively simple operation, and wide applicability. It is necessary to formulate a widely accepted consensus among the experts in China who have extensive expertise and experience in the treatment of hepatic hemangiomas using RF ablation, which is important to standardize the application of RF ablation for the management of hepatic hemangiomas, regarding the selection of patients with suitable indications to receive RF ablation treatment, the technical details of the techniques, therapeutic effect evaluations, management of complications, etc. A final consensus by a Chinese panel of experts who have the expertise of using RF ablation to treat hepatic hemangiomas was reached by means of literature review, comprehensive discussion, and draft approval.Jun Gao Rui-Fang Fan Jia-Yin Yang Yan Cui Jian-Song Ji Kuan-Sheng Ma Xiao-Long Li Long Zhang Chong-Liang Xu Xin-Liang Kong Shan Ke Xue-Mei Ding Shao-Hong Wang Meng-Meng Yang Jin-Jin Song Bo Zhai Chun-Ming Nin Shi-Gang Guo Zong-Hai Xin Jun Lu Yong-Hong Dong Hua-Qiang Zhu Wen-Bing Sun 2017World Journal of Gastroenterology2017,23,39:15
9Statistical scenarios forecasting method for wind power ramp events using modified neural networks显示文摘Wind power ramp events increasingly affect the integration of wind power and cause more and more problems to the safety of power grid operation in recent years.Several forecasting techniques for wind power ramp events have been reported.In this paper,the statistical scenarios forecasting method is proposed for wind power ramp event probabilistic forecasting based on the probability generating model.Multi-objective fitness functions are established considering cumulative density functions and higher order moment autocorrelation functions with respect to the consistency of distribution and timing characteristics,respectively.Parameters of probability generating model are calculated by the iterative optimization using the modified genetic algorithm with multi-objective fitness functions.A number of statistical scenarios captured bands are generated accordingly.Eventually,ramp event probability characteristics are detected from scenarios captured bands to evaluate the ramp event forecasting method.A wind plant of Bonneville Power Administration with actual wind power data is selected for calculation and statistical analysis.It is shown that statistical results with multi-objective functions are more accurate than the results with single objective functions.Moreover,the statistical scenarios forecasting method can accurately estimate the characteristics of wind power ramp events.The results verify that the proposed method can guide the generation method of statistical scenarios and forecasting models for ramp events.Mingjian CUI Deping KE Di GAN Yuanzhang SUN 2015Journal of Modern Power Systems and Clean Energy2015,3,3:13
10Accurate and broadband manipulations of harmonic amplitudes and phases to reach 256 QAM millimeter-wave wireless communications by time-domain digital coding metasurface显示文摘We propose a theoretical mechanism and new coding strategy to realize extremely accurate manipulations of nonlinear electromagnetic harmonics in ultrawide frequency band based on a time-domain digital coding metasurface(TDCM).Using the proposed mechanism and coding strategy,we design and fabricate a millimeter-wave(mmWave) TDCM,which is composed of reprogrammable meta-atoms embedded with positive-intrinsic-negative diodes.By controlling the duty ratios and time delays of the digital coding sequences loaded on a TDCM,experimental results show that both amplitudes and phases of different harmonics can be engineered at will simultaneously and precisely in broad frequency band from 22 to33 GHz,even when the coding states are imperfect,which is in good agreement with theoretical calculations.Based on the fabricated high-performance TDCM,we further propose and experimentally realize a large-capacity mmWave wireless communication system,where 256 quadrature amplitude modulation,along with other schemes,is demonstrated.The new wireless communication system has a much simpler architecture than the currently used mmWave wireless systems,and hence can significantly reduce the hardware cost.We believe that the proposed method and system architecture can find vast application in future mmWave and terahertz-wave wireless communication and radar systems.Ming Zheng Chen Wankai Tang Jun Yan Dai Jun Chen Ke Lei Zhang Cheng Zhang Jin Yang Lianlin Li Qiang Cheng Shi Jin Tie Jun Cui 2022National Science Review2022,9,1:13
11Molecular Typing of Brucella Suis Collected from 1960s to 2010s in China by MLVA and PFGE显示文摘Brucellosis is a bacterial anthropozoonosis usually caused by Brucella abortus, Brucella melitensis, Brucella suis and Brucella canis. Brucella suis, the causative agent of swine brucellosis, is classified into five biovars and preferentially infects different animal hosts [1] .LI Zhen Jun CUI Bu Yun CHEN Hai CHEN Jing Diao ZHAO Hong Yan PIAO Dong Ri JIANG Hai ZHANG Li TANG Xu KE Chang Wen YAO zhen TIAN Guo Zhong 2013Biomedical and Environmental Sciences2013,26,6:13
12Molecular Typing of Leptospira interrogans Strains Isolated from Rattus tanezumi in Guizhou Province,Southwest of China显示文摘Objective To identify and type three leptospires isolated from Rattus tanezumi in Guizhou Province by using three molecular techniques (PFGE, MLVA, and MLST), reveal the molecular characteristic of causative agents of local leptospirosis and evaluate these three molecular methods based on their detection resolution and efficiency. Methods Three Leptospira strains were isolated from the kidney of Rattus tanezumi and cultured with EMJH medium. PFGE, MLVA, and MLST assays were applied to type the three strains isolated from Rattus tanezumi in Guizhou Province. Results PFGE, MLVA, and MLST typing showed that the three leptospiral isolates matched with leptospiral serogroup Icterohaemorrhagiae serovar Lai. The findings of the genotyping methods were consistent. MLVA and MLST defined genotypes, whereas PFGE allowed the recognition of additional subgroups within the genotypes, and the findings of molecular typing were also consistent with those of traditional techniques. Conclusion Three leptospiral isolates from Guizhou Province matched with leptospiral serogroup Icterohaemorrhagiae serovar Lai, and PFGE, MLVA, and MLST, as reliable molecular techniques for identifying and typing of Leptospira interrogans, would contribute to the active surveillance, outbreak investigation and source tracking for leptospirosis in Guizhou Province.LI Shi Jun ZHANG Cui Cai LI Xiu Wen TIAN Ke Cheng TANG Guang Peng WANG Ding Ming LIU Ying NIE Yi Xin JIANG Xiu Gao 2012Biomedical and Environmental Sciences2012,25,5:12
13Modified FOLFIRINOX for unresectable locally advanced or metastatic gallbladder cancer,a comparison with GEMOX regimen显示文摘Background:The first-line chemotherapy regimen for advanced gallbladder cancer(GBC)is gemcitabine plus platinum(GP),despite its efficacy is limited.The current investigation is a retrospective study to compare the safety and efficacy between the modified FOLFIRINOX(mFOLFIRINOX)and gemcitabine plus oxaliplatin(GEMOX)as the first-line chemotherapy for unresectable locally advanced or metastatic GBC.Methods:The data of patients with unresectable locally advanced or metastatic GBC,who were treated with mFOLFIRINOX or GEMOX as the first-line therapy between April 2014 and April 2018 at Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine,were retrieved.This retrospective study evaluated the clinical characteristics,survival outcomes and adverse events.Results:A total of 44 patients(n=25 in mFOLFIRINOX,n=19 in GEMOX)were included.There were no significant differences between groups in baseline characteristics.The median progression free survival(mPFS)was 5.0 months in the mFOLFIRINOX group and 2.5 months in the GEMOX group[P=0.021;hazard ratio(HR),0.499;95%CI,0.266 to 0.937].The median overall survival(mOS)was 9.5 months in the mFOLFIRINOX group and 7.0 months in the GEMOX group(P=0.019;HR,0.471;95%CI,0.239 to 0.929).Disease control rate(DCR)was 76.0%in the mFOLFIRINOX group and 47.4%in the GEMOX group(P=0.051).The rate of grade 3-4 adverse events was 48%in the mFOLFIRINOX group and 36.8%in the GEMOX group(P=0.459).The incidence of grade 3-4 neutropenia and diarrhea were more common in the mFOLFIRINOX group,while the incidence of grade 3-4 thrombocytopenia and peripheral neuropathy were more common in the GEMOX group.Conclusions:mFOLFIRINOX might improve the poor prognosis of unresectable locally advanced or metastatic GBC,and the results need to be further verified by prospective clinical studies.Xu-Ya Cui Xue-Chuan Li Jiu-Jie Cui Xiang-Song Wu Lu Zou Xiao-Ling Song Tai Ren Yi-Di Zhu Huai-Feng Li Yang Yang Ke Liu Xu-Sheng Han Zi-Yao Jia Wen-Guang Wu Xu-An Wang Wei Gong Li-Wei Wang Mao-Lan Li Ying-Bin Liu 2021Hepatobiliary Surgery and Nutrition2021,10,4:10
14Application effect for a care bundle in optimizing nursing of patients with severe craniocerebral injury显示文摘BACKGROUND Severe craniocerebral injury(STBI)is a critical physical trauma caused by a sudden external force acting on the head.The condition is complex and changeable,and disability and mortality rates are high.Although the life of STBI patients can be saved through treatment,the sequelae of consciousness,speech,cognitive impairment,stiffness,spasm,pain and abnormal behavior in the early rehabilitation stage can be a heavy burden to a family.In the past,routine nursing was often used to treat/manage STBI;however,problems,such as improper cooperation and untimely communication,reduced therapeutic effectiveness.AIM To investigate the effect of a proposed care bundle to optimize the first aid process and assess its effectiveness on the early rehabilitation nursing of patients with STBI.METHODS From January 2019 to December 2020,126 STBI patients were admitted to the emergency department of Chongqing Emergency Medical Center.These patients were retrospectively selected as the research participants in the current study.The study participants were then divided into a control group(61 cases)and a study group(65 cases).The control group was treated with routine nursing.The study group adopted the proposed care bundle.The National Institutes of Health Stroke Scale/Score and Glasgow Coma Scale(GCS)were used to evaluate neurological function before and after emergency treatment.After 3 mo of rehabilitation,experimental outcomes were assessed.These included the GCS,Barthel Index,complication rate,muscle strength grade and satisfaction.RESULTS There was no significant difference in gender,age,cause of injury and GCS between the two groups.After emergency,the National Institutes of Health Stroke Scale/Score of the study group(10.23±3.26)was lower than that of the control group(14.79±3.14).The GCS score of the study group(12.48±2.38)was higher than that of the control group(9.32±2.01).The arrival time of consultation in the study group was 20.56±19.12,and the retention time in the emergency room was 45.12±10.21,which were significantly shorter than those in the control group.After 3 mo of rehabilitation management,the GCS and Barthel Index of the study group were 14.56±3.75 and 58.14±12.14,respectively,which were significantly higher than those of the control group.The incidence of complications in the study group(15.38%)was significantly lower than that in the control group(32.79%).The proportion of muscle strength≥grade III in the study group(89.23%)was significantly higher than that in the control group(50.82%).The satisfaction of patients in the study group was significantly higher than that in the control group.CONCLUSION Care bundles are used to optimize the nursing process.During first-aid,care bundles can effectively improve the rescue effect and improve neurological function of STBI patients as well as shorten the treatment time.In early rehabilitation,they can effectively improve the consciousness of STBI patients,improve the activities of daily living,reduce the risk of complications,accelerate the recovery of muscle strength and improve their satisfaction.Ying Gao Li-Ping Liao Peng Chen Ke Wang Cui Huang Ying Chen Shao-Yu Mou 2021World Journal of Clinical Cases2021,9,36:10
15Epidemiological and clinical features of functional dyspepsia in a region with a high incidence of esophageal cancer in China显示文摘Background:Functional dyspepsia(FD)has rarely been investigated in areas with a high prevalence of esophageal squamous cell carcinoma(ESCC).This study aims to reveal the epidemiological and clinical features of FD and organic dyspepsia(OD)in such a population.Methods:A middle-aged and elderly population-based study was conducted in a region with a high incidence of ESCC.All participants completed the Gastroesophageal Reflux Disease Questionnaire and Functional Gastrointestinal Disease Rome III Diagnostic Questionnaire,and they underwent gastroscopy.After exclusion of gastroesophageal reflux disease,uninvestigated dyspepsia(UID)was divided into OD and FD for further analyses.Results:A total of 2916 participants were enrolled from July 2013 to March 2014 in China.We detected 166 UID cases with questionnaires,in which 17 patients with OD and 149 with FD were diagnosed via gastroscopy.OD cases presented as reflux esophagitis(RE),ESCC,and duodenal ulcer.Heartburn(52.94%)and reflux(29.41%)were common in OD,but no symptomatic differences were found between FD and OD.Male sex,low education level,and liquid food were the risk factors for OD,while frequent fresh vegetable consumption was a protective factor.FD included 56(37.58%)cases of postprandial distress syndrome(PDS),52(34.89%)of epigastric pain syndrome(EPS),nine(6.04%)of PDS+EPS,and 32(21.48%)of FD+functional esophageal disorders.The Helicobacter pylori infection rate in FD patients was not higher than that in the control group(34.23%vs.42.26%,P=0.240).Frequent spicy food consumption was associated with PDS(odds ratio[OR]:2.088,95%confidence interval[CI]:1.028–4.243),while consumption of deep well water was protective for PDS(OR:0.431,95%CI:0.251–0.741).Conclusions:The prevalence of FD was 5.11%in the studied population.Gastroscopy should be prescribed for dyspepsia patients in case that ESCC and RE would be missed in UID cases diagnosed solely by the Rome III questionnaire.Trial Registration:ClinicalTrials.gov,NCT01688908;http://gffzzd3f38a9638994581sww6uwnoqnb5b6f05.ffgz.tsg.suse.edu.cn/ct2/show/record/NCT01688908.Nan Hu Kun Wang Li Zhang Zuo-Jing Liu Zhu Jin Rong-Li Cui He-Jun Zhang Zhong-Hu He Yang Ke Li-Ping Duan 2021Chinese Medical Journal2021,,12:9
16Immobilization of functional nano-objects in living engineered bacterial biofilms for catalytic applications显示文摘Nanoscale objects feature very large surface-area-to-volume ratios and are now understood as powerful tools for catalysis,but their nature as nanomaterials brings challenges including toxicity and nanomaterial pollution.Immobilization is considered a feasible strategy for addressing these limitations.Here,as a proof-of-concept for the immobilization of nanoscale catalysts in the extracellular matrix of bacterial biofilms,we genetically engineered amyloid monomers of the Escherichia coli curli nanofiber system that are secreted and can self-assemble and anchor nano-objects in a spatially precise manner.We demonstrated three scalable,tunable and reusable catalysis systems:biofilm-anchored gold nanoparticles to reduce nitro aromatic compounds such as the pollutant p-nitrophenol,biofilm-anchored hybrid Cd0.9Zn0.1S quantum dots and gold nanoparticles to degrade organic dyes and biofilm-anchored CdSeS@ZnS quantum dots in a semi-artificial photosynthesis system for hydrogen production.Our work demonstrates how the ability of biofilms to grow in scalable and complex spatial arrangements can be exploited for catalytic applications and clearly illustrates the design utility of segregating high-energy nano-objects from injury-prone cellular components by engineering anchoring points in an extracellular matrix.Xinyu Wang Jiahua Pu Yi Liu Fang Ba Mengkui Cui Ke Li Yu Xie Yan Nie Qixi Mi Tao Li Lingli Liu Manzhou Zhu Chao Zhong 2019National Science Review2019,6,5:9
17Analysis of Health Service Utilization and its Influencing Factors among Patients with Pneumoconiosis in China显示文摘Pneumoconiosis,an interstitial lung disease that occurs from breathing in certain kinds of damaging dust particles,is a major occupational disease in China.Patients diagnosed with occupational pneumoconiosis can avail of free medical treatment,whereas patients without a diagnosis of occupational diseases cannot not claim free medical treatment in most provinces from the government before 2019.This study aimed to analyze the priority of medical facility selection and its influencing factors among patients with pneumoconiosis.WANG Huan Qiang JIA Jun Lin JIANG Zhao Qiang JIN Qi LI Dong Xia LING Rui Jie LI Ying CUI Ping CHEN Gang ZHAO Hong Yu LI Yan WEN Ke LYU Xiang Pei LOU Jian Lin LI Tao 2021Biomedical and Environmental Sciences2021,34,1:9
18CD147-spike protein is a novel route for SARS-CoV-2 infection to host cells显示文摘In face of the everlasting battle toward COVID-19 and the rapid evolution of SARS-CoV-2,no specific and effective drugs for treating this disease have been reported until today.Angiotensin-converting enzyme 2(ACE2),a receptor of SARS-CoV-2,mediates the virus infection by binding to spike protein.Although ACE2 is expressed in the lung,kidney,and intestine,its expressing levels are rather low,especially in the lung.Considering the great infectivity of COVID-19,we speculate that SARS-CoV-2 may depend on other routes to facilitate its infection.Here,we first discover an interaction between host cell receptor CD147 and SARS-CoV-2 spike protein.The loss of CD147 or blocking CD147 in Vero E6 and BEAS-2B cell lines by anti-CD147 antibody,Meplazumab,inhibits SARSCoV-2 amplification.Expression of human CD147 allows virus entry into non-susceptible BHK-21 cells,which can be neutralized by CD147 extracellular fragment.Viral loads are detectable in the lungs of human CD147(hCD147)mice infected with SARS-CoV-2,but not in those of virus-infected wild type mice.Interestingly,virions are observed in lymphocytes of lung tissue from a COVID-19 patient.Human T cells with a property of ACE2 natural deficiency can be infected with SARS-CoV-2 pseudovirus in a dosedependent manner,which is specifically inhibited by Meplazumab.Furthermore,CD147 mediates virus entering host cells by endocytosis.Together,our study reveals a novel virus entry route,CD147-spike protein,which provides an important target for developing specific and effective drug against COVID-19.Ke Wang Wei Chen Zheng Zhang Yongqiang Deng Jian-Qi Lian Peng Du Ding Wei Yang Zhang Xiu-Xuan Sun Li Gong Xu Yang Lei He Lei Zhang Zhiwei Yang Jie-Jie Geng Ruo Chen Hai Zhang Bin Wang Yu-Meng Zhu Gang Nan Jian-Li Jiang Ling Li Jiao Wu Peng Lin Wan Huang Liangzhi Xie Zhao-Hui Zheng Kui Zhang Jin-Lin Miao Hong-Yong Cui Min Huang Jun Zhang Ling Fu Xiang-Min Yang Zhongpeng Zhao Shihui Sun Hongjing Gu Zhe Wang Chun-Fu Wang Yacheng Lu Ying-Ying Liu Qing-Yi Wang Huijie Bian Ping Zhu Zhi-Nan Chen 2020Signal Transduction and Targeted Therapy2020,5,1:9
19The 1470 nm diode laser with an intralesional fiber device:a proposed solution for the treatment of inflamed and infected keloids显示文摘Background:Keloids are the result of abnormal wound healing and often are subject to infections and recurrent inflammation.We present a study conducted with a 1470 nm diode laser using an intralesional optical fiber device for the treatment of inflamed keloid scars.We evaluate its efficacy as a novel alternative method to decrease keloid infection and inflammation.Methods:The patients who underwent 1470 nm laser treatment from February 2016 to February 2018 at the plastic and reconstructive surgery department of the Shanghai Ninth People’s Hospital Affiliated to Shanghai Jiao Tong University with keloid accompanying serious local infection and fester were included.Patients took curative effect evaluation before and 1 year after the treatment.The test items included infection frequency in each year;pain,by visual analogue scale(VAS);itch,using VAS;quality of life(QOL),using QOL scale;and blood supply,using PeriCam PSI.Results:A total of 19 patients(mean age 35.21 years,range 11–66)with history of inflamed keloids with episodes of infection or abscess were enrolled.Patients underwent to a 1470 nm laser therapy for average of 1.16 times.After treatment,infection frequency and blood supply in keloids were reduced(p<0.001).Pain,itching,and QOL were improved(p<0.001).Conclusion:The present study shows that 1470 nm fiber laser treatment could improve inflamed keloids fairly well by decreasing inflammation,and a relative stabilization of collagen composition.Therefore,it is an effective minimally invasive scar therapy,but further studies are essential to confirm the present results.Ke Li Fabio Nicoli Wen Jing Xi Zheng Zhang Chunxiao Cui Ahmed Al-Mousawi Alberto Balzani Yun Tong Yixin Zhang 2019Burns & Trauma2019,7,1:8
20Characterization of the essential role of bone morphogenetic protein 9 (BMP9) in osteogenic differentiation of mesenchymal stem cells (MSCs) through RNA interference显示文摘Mesenchymal stem cells(MSCs)are multipotent stem cells and capable of differentiating into multiple cell types including osteoblastic,chondrogenic and adipogenic lineages.We previously identified BMP9 as one of the most potent BMPs that induce osteoblastic differentiation of MSCs although exact molecular mechanism through which BMP9 regulates osteogenic differentiation remains to be fully understood.Here,we seek to develop a recombinant adenovirus system to optimally silence mouse BMP9 and then characterize the important role of BMP9 in osteogenic differentiation of MSCs.Using two different siRNA bioinformatic prediction programs,we design five siRNAs targeting mouse BMP9(or simB9),which are expressed under the control of the converging H1 and U6 promoters in recombinant adenovirus vectors.We demonstrate that two of the five siRNAs,simB9-4 and simB9-7,exhibit the highest efficiency on silencing exogenous mouse BMP9 in MSCs.Furthermore,simB9-4 and simB9-7 act synergistically in inhibiting BMP9-induced expression of osteogenic markers,matrix mineralization and ectopic bone formation from MSCs.Thus,our findings demonstrate the important role of BMP9 in osteogenic differentiation of MSCs.The characterized simB9 siRNAs may be used as an important tool to investigate the molecular mechanism behind BMP9 osteogenic signaling.Our results also indicate that recombinant adenovirus-mediated expression of siRNAs is efficient and sustained,and thus may be used as an effective delivery vehicle of siRNA therapeutics.Shujuan Yan Ruyi Zhang Ke Wu Jing Cui Shifeng Huang Xiaojuan Ji Liping An Chengfu Yuan Cheng Gong Linghuan Zhang Wei Liu Yixiao Feng Bo Zhang Zhengyu Dai Yi Shen Xi Wang Wenping Luo Bo Liu Rex C.Haydon Michael J.Lee Russell R.Reid Jennifer Moriatis Wolf Qiong Shi Hue H.Luu Tong-Chuan He Yaguang Weng 2018Genes & Diseases2018,5,2:8
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