68 Works

Bicomponent polymeric micelles for pH-controlled delivery of doxorubicin

Chunyun Wang, Peilan Qi, Yan Lu, Lei Liu, Yanan Zhang, Qianli Sheng, Tianshun Wang, Mengying Zhang, Rui Wang & Shiyong Song
Stimuli-responsive drug delivery systems (DDSs) are expected to realize site-specific drug release and kill cancer cells selectively. In this study, a pH-responsive micelle was designed utilizing the pH-sensitivity of borate bonds formed between dopamine and boronic acid. First, methyl (polyethylene glycol)-block-polycaprolactone (mPEG-PCL) was conjugated with 4-cyano-4-(thiobenzoylthio)pentanoic acid (CTP) to obtain a macroinitiator. Two different segments poly(dopamine methacrylamide) (PDMA) and poly(vinylphenylboronic acid) (PVBA) were then grafted to the end of mPEG-PCL. Two triblock copolymers, mPEG-PCL-PDMA and...

RNA based mNGS approach identifies a novel human coronavirus from two individual pneumonia cases in 2019 Wuhan outbreak

Liangjun Chen, Weiyong Liu, Qi Zhang, Ke Xu, Guangming Ye, Weichen Wu, Ziyong Sun, Fang Liu, Kailang Wu, Bo Zhong, Yi Mei, Wenxia Zhang, Yu Chen, Yirong Li, Mang Shi, Ke Lan & Yingle Liu
From December 2019, an outbreak of unusual pneumonia was reported in Wuhan with many cases linked to Huanan Seafood Market that sells seafood as well as live exotic animals. We investigated two patients who developed acute respiratory syndromes after independent contact history with this market. The two patients shared common clinical features including fever, cough, and multiple ground-glass opacities in the bilateral lung field with patchy infiltration. Here, we highlight the use of a low-input...

RNA based mNGS approach identifies a novel human coronavirus from two individual pneumonia cases in 2019 Wuhan outbreak

Liangjun Chen, Weiyong Liu, Qi Zhang, Ke Xu, Guangming Ye, Weichen Wu, Ziyong Sun, Fang Liu, Kailang Wu, Bo Zhong, Yi Mei, Wenxia Zhang, Yu Chen, Yirong Li, Mang Shi, Ke Lan & Yingle Liu
From December 2019, an outbreak of unusual pneumonia was reported in Wuhan with many cases linked to Huanan Seafood Market that sells seafood as well as live exotic animals. We investigated two patients who developed acute respiratory syndromes after independent contact history with this market. The two patients shared common clinical features including fever, cough, and multiple ground-glass opacities in the bilateral lung field with patchy infiltration. Here, we highlight the use of a low-input...

Photoelectrochemical Immunosensor Based on ZnIn2S4/Bi2Se3 Nanocomposite for the Determination of Cardiac Troponin I

Wanxin Dong, Xinxin Mo, Yu Wang, Qin Lei & He Li
In this work, a novel flexible photoelectrochemical immunosensor is developed to determine cardiac troponin I (cTnI) in serum. The flower-like ZnIn2S4 nanospheres (ZIS), as signal amplification material, were successfully synthesized by a solvothermal method. The ZIS and Bi2Se3 were modified on the indium tin oxide- polyethylene terephthalate (ITO-PET) electrode, which effectively accelerates the electronic transition and improved the photocurrent conversion efficiency (signal on). However, the binding of antigen–antibody proteins blocks the electron transfer, resulting in...

Iodine mediated synthesis of diaryl diselenides using SeO2 as a selenium source

Dileep Kommula, Qing Li, Siyang Ning, Wujun Liu, Qian Wang & Zongbao K. Zhao
A simple, eco-friendly and convenient procedure has been developed for the synthesis of diphenyl diselinides from readily available aryl boronic acids by reaction with SeO2 in the presence of iodine under simple conditions. The methodology is reported about 19 examples and applicable to a broad scope of aryl boronic acids containing electron-rich and electron-poor substituents. Apart from being milder and environmentally benign conditions, this synthetic protocol comprises a novel, reliable methodology to give good to...

An infectious clone of enterovirus 71(EV71) that is capable of infecting neonatal immune competent mice without adaptive mutations

Huiying Zhang, Zhigang Song, Jingyi Zou, Yanling Feng, Jing Zhang, Lehao Ren, Xiaonan Zhang, Yunwen Hu, Zhenghong Yuan & Zhigang Yi
Enterovirus 71 (EV71) is a major pathogen that causes hand, foot and mouth disease (HFMD), which is a life threatening disease in certain children. The pathogenesis of EV71-caused HFMD is poorly defined due to the lack of simple and robust animal models with severe phenotypes that recapitulate symptoms observed in humans. Here, we generated the infectious clone of a clinical isolate from a severe HFMD patient. Virus rescued from the cDNA clone was infectious in...

ddPCR: a more accurate tool for SARS-CoV-2 detection in low viral load specimens

Tao Suo, Xinjin Liu, Jiangpeng Feng, Ming Guo, Wenjia Hu, Dong Guo, Hafiz Ullah, Yang Yang, Qiuhan Zhang, Xin Wang, Muhanmmad Sajid, Zhixiang Huang, Liping Deng, Tielong Chen, Fang Liu, Ke Xu, Yuan Liu, Qi Zhang, Yingle Liu, Yong Xiong, Guozhong Chen, Ke Lan & Yu Chen
Quantitative real time PCR (RT-PCR) is widely used as the gold standard for clinical detection of SARS-CoV-2. However, due to the low viral load specimens and the limitations of RT-PCR, significant numbers of false negative reports are inevitable, which results in failure to timely diagnose, cut off transmission, and assess discharge criteria. To improve this situation, an optimized droplet digital PCR (ddPCR) was used for detection of SARS-CoV-2, which showed that the limit of detection...

Renin-angiotensin system inhibitors improve the clinical outcomes of COVID-19 patients with hypertension

Juan Meng, Guohui Xiao, Juanjuan Zhang, Xing He, Min Ou, Jing Bi, Rongqing Yang, Wencheng Di, Zhaoqin Wang, Zigang Li, Hong Gao, Lei Liu & Guoliang Zhang
The dysfunction of the renin-angiotensin system (RAS) has been observed in coronavirus infection disease (COVID-19) patients, but whether RAS inhibitors, such as angiotensin-converting enzyme inhibitors (ACEIs) and angiotensin II type 1 receptor blockers (ARBs), are associated with clinical outcomes remains unknown. COVID-19 patients with hypertension were enrolled to evaluate the effect of RAS inhibitors. We observed that patients receiving ACEI or ARB therapy had a lower rate of severe diseases and a trend toward a...

The activation of antiviral RNA interference not only exists in neural progenitor cells but also in somatic cells in mammals

Yuqiang Zhang, Zhe Li, Zhi Ye, Yan Xu, Binbin Wang, Congcong Wang, Yunpeng Dai, Jinfeng Lu, Boxun Lu, Wanju Zhang & Yang Li
The RNA interference (RNAi) pathway directs an important antiviral immunity mechanism in plants and invertebrates. Recently, we and others have demonstrated that the antiviral RNAi response is also conserved in mammals, at least to five distinct RNA viruses, including Zika virus (ZIKV). ZIKV may preferentially infect neuronal progenitor cells (NPCs) in the developing foetal brain. Ex vivo ZIKV infection induces RNAi-mediated antiviral response in human NPCs, but not in the more differentiated NPCs or somatic...

The activation of antiviral RNA interference not only exists in neural progenitor cells but also in somatic cells in mammals

Yuqiang Zhang, Zhe Li, Zhi Ye, Yan Xu, Binbin Wang, Congcong Wang, Yunpeng Dai, Jinfeng Lu, Boxun Lu, Wanju Zhang & Yang Li
The RNA interference (RNAi) pathway directs an important antiviral immunity mechanism in plants and invertebrates. Recently, we and others have demonstrated that the antiviral RNAi response is also conserved in mammals, at least to five distinct RNA viruses, including Zika virus (ZIKV). ZIKV may preferentially infect neuronal progenitor cells (NPCs) in the developing foetal brain. Ex vivo ZIKV infection induces RNAi-mediated antiviral response in human NPCs, but not in the more differentiated NPCs or somatic...

Impact of environmental shocks on the preferred number of children of internal migrants: Evidence from China

Jin Li
Most research has used individual or group features to explain why migrants have different preferred number of children. However, these features can be identified and subdivided infinitely, with none of them broadly answering the question “why migrants desire more or less children”? This paper identified “environmental shocks”, which are a common experience for all migrants, as determinants of dissimilar preferred number of children across internal migrants in China. Environmental shocks refer to the uncertainty experienced...

Synthesis and in vitro anticancer activities of substituted N-(4’-Nitrophenyl)-L-prolinamides

Adejoke Osinubi, Josephat Izunobi, Xiaoguang Bao, Olayinka Asekun, Jiehong Kong, Chunshan Gui & Oluwole Familoni
Prolinamides are present in secondary metabolites and have wide-ranging biological properties as well as antimicrobial and cytotoxic activities. N-(4’-substituted phenyl)-L-prolinamides 4a–4w were synthesised in two steps, starting from the condensation of p-fluoronitrobenzene 1a–1b with L-proline 2a–2b, under aqueous–alcoholic basic conditions to afford N-aryl-L-prolines 3a–3c, which underwent amidation via a two-stage, one-pot reaction involving SOCl2 and amines, to furnish L-prolinamides in 20–80% yield. The cytotoxicities of 4a–4w against four human carcinoma cell lines (SGC7901, HCT-116, HepG2...

Risks and features of secondary infections in severe and critical ill COVID-19 patients

Haocheng Zhang, Yi Zhang, Jing Wu, Yang Li, Xian Zhou, Xin Li, Haili Chen, Mingquan Guo, Shu Chen, Feng Sun, Richeng Mao, Chao Qiu, Zhaoqin Zhu, Jingwen Ai & Wenhong Zhang
Objectives Severe or critical COVID-19 is associated with intensive care unit admission, increased secondary infection rate, and would lead to significant worsened prognosis. Risks and characteristics relating to secondary infections in severe COVID-19 have not been described. Methods Severe and critical COVID-19 patients from Shanghai were included. We collected lower respiratory, urine, catheters, and blood samples according to clinical necessity and culture and mNGS were performed. Clinical and laboratory data were archived. Results We found...

Establishing a high sensitivity detection method for SARS-CoV-2 IgM/IgG and developing a clinical application of this method

Chunyan Zhang, Lei Zhou, Hao Liu, Sibing Zhang, Yaping Tian, Junli Huo, Fei Li, Yao Zhang, Bo Wei, Dan Xu, Jinwei Hu, Jiayi Wang, Yuxuan Cheng, Wenjie Shi, Xiuli Xu, Jianping Zhou, Peipei Sang, Xudong Tan, Weiwei Wang, Minjie Zhang, Bin Wang, Yujun Zhou, Kan Zhang & Kunlun He
COVID-19 is caused by SARS-CoV-2 infection and was initially discovered in Wuhan. This outbreak quickly spread all over China and then to more than 20 other countries. SARS-CoV-2 fluorescent microsphere immunochromatographic test strips were prepared by the combination of time-resolved fluorescence immunoassay with a lateral flow assay. The analytical performance and clinical evaluation of this testing method was done and the clinical significance of the testing method was verified. The LLOD of SARS-CoV-2 antibody IgG...

Viral RNA level, serum antibody responses, and transmission risk in recovered COVID-19 patients with recurrent positive SARS-CoV-2 RNA test results: a population-based observational cohort study

Chao Yang, Min Jiang, Xiaohui Wang, Xiujuan Tang, Shisong Fang, Hao Li, Le Zuo, Yixiang Jiang, Yifan Zhong, Qiongcheng Chen, Chenli Zheng, Lei Wang, Shuang Wu, Weihua Wu, Hui Liu, Jing Yuan, Xuejiao Liao, Zhen Zhang, Xiaolu Shi, Yijie Geng, Huan Zhang, Huanying Zheng, Min Wan, Linying Lu, Xiaohu Ren … & Qinghua Hu
Managing recovered COVID-19 patients with recurrent-positive SARS-CoV-2 RNA test results is challenging. We performed a population-based observational study to characterize the viral RNA level and serum antibody responses in recurrent-positive patients and evaluate their viral transmission risk. Of 479 recovered COVID-19 patients, 93 (19%) recurrent-positive patients were identified, characterized by younger age, with a median discharge-to-recurrent-positive length of 8 days. After readmission, recurrent-positive patients exhibited mild (28%) or absent (72%) symptoms, with no disease progression....

Viral RNA level, serum antibody responses, and transmission risk in recovered COVID-19 patients with recurrent positive SARS-CoV-2 RNA test results: a population-based observational cohort study

Chao Yang, Min Jiang, Xiaohui Wang, Xiujuan Tang, Shisong Fang, Hao Li, Le Zuo, Yixiang Jiang, Yifan Zhong, Qiongcheng Chen, Chenli Zheng, Lei Wang, Shuang Wu, Weihua Wu, Hui Liu, Jing Yuan, Xuejiao Liao, Zhen Zhang, Xiaolu Shi, Yijie Geng, Huan Zhang, Huanying Zheng, Min Wan, Linying Lu, Xiaohu Ren … & Qinghua Hu
Managing recovered COVID-19 patients with recurrent-positive SARS-CoV-2 RNA test results is challenging. We performed a population-based observational study to characterize the viral RNA level and serum antibody responses in recurrent-positive patients and evaluate their viral transmission risk. Of 479 recovered COVID-19 patients, 93 (19%) recurrent-positive patients were identified, characterized by younger age, with a median discharge-to-recurrent-positive length of 8 days. After readmission, recurrent-positive patients exhibited mild (28%) or absent (72%) symptoms, with no disease progression....

Longitudinal analysis of the antibody repertoire of a Zika virus-infected patient revealed dynamic changes in antibody response

Xuefeng Niu, Qihong Yan, Zhipeng Yao, Fan Zhang, Linbing Qu, Chunlin Wang, Chengrui Wang, Hui Lei, Chaoming Chen, Renshan Liang, Jia Luo, Qian Wang, Lingzhai Zhao, Yudi Zhang, Kun Luo, Longyu Wang, Hongkai Wu, Tingting Liu, Pingchao Li, Zhiqiang Zheng, Yee Joo Tan, Liqiang Feng, Zhenhai Zhang, Jian Han, Fuchun Zhang … & Ling Chen
The Zika virus (ZIKV) is a mosquito-borne flavivirus that causes neonatal abnormalities and other disorders. Antibodies to the ZIKV envelope (E) protein can block infection. In this study, next-generation sequencing (NGS) of immunoglobulin heavy chain (IgH) mRNA transcripts was combined with single-cell PCR cloning of E-binding monoclonal antibodies for analysing antibody response in a patient from the early stages of infection to more than one year after the clearance of the virus. The patient's IgH...

Photoelectrochemical Immunosensor Based on ZnIn2S4/Bi2Se3 Nanocomposite for the Determination of Cardiac Troponin I

Wanxin Dong, Xinxin Mo, Yu Wang, Qin Lei & He Li
In this work, a novel flexible photoelectrochemical immunosensor is developed to determine cardiac troponin I (cTnI) in serum. The flower-like ZnIn2S4 nanospheres (ZIS), as signal amplification material, were successfully synthesized by a solvothermal method. The ZIS and Bi2Se3 were modified on the indium tin oxide- polyethylene terephthalate (ITO-PET) electrode, which effectively accelerates the electronic transition and improved the photocurrent conversion efficiency (signal on). However, the binding of antigen–antibody proteins blocks the electron transfer, resulting in...

Structural basis of HCoV-19 fusion core and an effective inhibition peptide against virus entry

Huan Sun, Yan Li, Peipei Liu, Chengpeng Qiao, Xiaomin Wang, Lianao Wu, Kefang Liu, Yu Hu, Chao Su, Shuguang Tan, Shumei Zou, Guizhen Wu, Jinghua Yan, George Fu Gao, Jianxun Qi & Qihui Wang
Structural basis of HCoV-19 fusion core and an effective inhibition peptide against virus entry

The type I-E CRISPR-Cas system influences the acquisition of blaKPC-IncF plasmid in Klebsiella pneumonia

Ying Zhou, Yu Tang, Pan Fu, Dongxing Tian, Lianhua Yu, Yunkun Huang, Gang Li, Meng Li, Yong Wang, Zehua Yang, Xiaogang Xu, Zhe Yin, Dongsheng Zhou, Laurent Poirel & Xiaofei Jiang
Klebsiella pneumoniae carbapenemase (KPC)-producing K. pneumoniae (KPC-KP) have disseminated worldwide and emerged as major threats to public health. Of epidemiological significance, the international pandemic of KPC-KP is primarily associated with CG258 isolates and blaKPC-IncF plasmids. CRISPR-Cas system is an adaptive immune system that can hinder gene expansion driven by horizontal gene transfer. Because of blaKPC-IncF plasmids are favored by CG258 K. pneumoniae, it was of interest to examine the co-distribution of CRISPR and blaKPC-IncF plasmids...

Profiling serum cytokines in COVID-19 patients reveals IL-6 and IL-10 are disease severity predictors

Huan Han, Qingfeng Ma, Cong Li, Rui Liu, Li Zhao, Wei Wang, Pingan Zhang, Xinghui Liu, Guosheng Gao, Fang Liu, Yingan Jiang, Xiaoming Cheng, Chengliang Zhu & Yuchen Xia
Since the outbreak of coronavirus disease 2019 (COVID-19) in Wuhan, China, it has rapidly spread across many other countries. While the majority of patients were considered mild, critically ill patients involving respiratory failure and multiple organ dysfunction syndrome are not uncommon, which could result death. We hypothesized that cytokine storm is associated with severe outcome. We enrolled 102 COVID-19 patients who were admitted to Renmin Hospital (Wuhan, China). All patients were classified into moderate, severe...

Risk factors associated with COVID-19 infection: a retrospective cohort study based on contacts tracing

Tao Liu, Wenjia Liang, Haojie Zhong, Jianfeng He, Zihui Chen, Guanhao He, Tie Song, Shaowei Chen, Ping Wang, Jialing Li, Yunhua Lan, Mingji Cheng, Jinxu Huang, Jiwei Niu, Liang Xia, Jianpeng Xiao, Jianxiong Hu, Lifeng Lin, Qiong Huang, Zuhua Rong, Aiping Deng, Weilin Zeng, Jiansen Li, Xing Li, Xiaohua Tan … & Wenjun Ma
This study aimed to estimate the attack rates, and identify the risk factors of COVID-19 infection. Based on a retrospective cohort study, we investigated 11,580 contacts of COVID-19 cases in Guangdong Province from 10 January to 15 March 2020. All contacts were tested by RT-PCR to detect their infection of SARS-COV-2. Attack rates by characteristics were calculated. Logistic regression was used to estimate the risk factors of infection for COVID-19. A total of 515 of...

Risks and features of secondary infections in severe and critical ill COVID-19 patients

Haocheng Zhang, Yi Zhang, Jing Wu, Yang Li, Xian Zhou, Xin Li, Haili Chen, Mingquan Guo, Shu Chen, Feng Sun, Richeng Mao, Chao Qiu, Zhaoqin Zhu, Jingwen Ai & Wenhong Zhang
Objectives Severe or critical COVID-19 is associated with intensive care unit admission, increased secondary infection rate, and would lead to significant worsened prognosis. Risks and characteristics relating to secondary infections in severe COVID-19 have not been described. Methods Severe and critical COVID-19 patients from Shanghai were included. We collected lower respiratory, urine, catheters, and blood samples according to clinical necessity and culture and mNGS were performed. Clinical and laboratory data were archived. Results We found...

BNIP3L/NIX degradation leads to mitophagy deficiency in ischemic brains

Xiaoli Wu, Yanrong Zheng, Mengru Liu, Yue Li, Shijia Ma, Weidong Tang, Wenping Yan, Ming Cao, Wanqing Zheng, Lei Jiang, Jiaying Wu, Feng Han, Zhenghong Qin, Liang Fang, Weiwei Hu, Zhong Chen & Xiangnan Zhang
Mitophagy, the elimination of damaged mitochondria through autophagy, promotes neuronal survival in cerebral ischemia. Previous studies found deficient mitophagy in ischemic neurons, but the mechanisms are still largely unknown. We determined that BNIP3L/NIX, a mitophagy receptor, was degraded by proteasomes, which led to mitophagy deficiency in both ischemic neurons and brains. BNIP3L exists as a monomer and homodimer in mammalian cells, but the effects of homodimer and monomer on mitophagy are unclear. Site-specific mutations in...

Goethite enhanced the Cr(VI) reduction by gallic acid through the stabilisation of free radicals: spectroscopic evidences and implication for transformation of Cr(VI) in an Oxisol

Ke Song, Yu Huang & Jiewen Yang
Produced from root exudation activities and the decomposition of organic matter, gallic acid (GA) has been shown to be widely involved in the electron transfer reactions in soils as well as the transformation of redox-sensitive pollutants, while which was subject to the mediation of solid surfaces with the unknown mechanisms. This study aimed to investigate the catalytic effect of goethite on the Cr(VI) reduction by GA and explore the implication for the transformation of Cr(VI)...

Registration Year

  • 2020
    68

Resource Types

  • Text
    40
  • Dataset
    21
  • Image
    4
  • Other
    3

Affiliations

  • Soochow University
    68
  • Chinese Academy of Medical Sciences & Peking Union Medical College
    55
  • Zhejiang University
    52
  • Sun Yat-sen University
    48
  • Capital Medical University
    48
  • Fudan University
    47
  • Shanghai Jiao Tong University
    46
  • Sichuan University
    41
  • Huazhong University of Science and Technology
    34
  • Chinese PLA General Hospital
    32