148 Works

Vegetation photosynthetic phenology metrics in northern terrestrial ecosystems: a dataset derived from a gross primary productivity product based on solar-induced chlorophyll fluorescence

Jing Fang, Xing Li, Jingfeng Xiao, Xiaodong Yan, Bolun Li & Feng Liu
Data description:
This product provides annual (2001-2020) 0.05 degree vegetation photosynthetic phenology (i.e., start of season-SOS; end of season-EOS; length of season-LOS) in terrestrial ecosystems of the Northern Hemisphere. The files includes two types: first growing season in ecosystems of the single and the double growing season; second growing season in ecosystems of the double growing season.
In each rar file, it includes SOS or EOS or LOS of every year (format: nc, NetCDF). In each nc...

Aromatic glycosides from the aerial part of Bupleurum chinense

Yan Liu, Dong-Xv Lu, Jin Huang, Juan Pan, Wei Guan, Bing-You Yang & Hai-Xue Kuang
A new aromatic glycoside (1) and twelve (2–13) known aromatic glycosides were isolated from the n-butyl alcohol of the 70% EtOH extract of the aerial part of Bupleurum chinense. Among them, compounds 4–7, 9, 11–13 were isolated from Umbelliferae plants for the first time. Their structures were elucidated by NMR and MS spectroscopy, and the absolute configuration of compound 1 was elucidated by single-crystal X-ray diffraction. Compounds 6 and 10 showed moderate cytotoxic activities on...

Discovery of a subgenotype of human coronavirus NL63 associated with severe lower respiratory tract infection in China, 2018

Yanqun Wang, Xin Li, Wenkuan Liu, Mian Gan, Lu Zhang, Jin Wang, Zhaoyong Zhang, Airu Zhu, Fang Li, Jing Sun, Guoxian Zhang, Zhen Zhuang, Jiaying Luo, Dehui Chen, Shuyan Qiu, Li Zhang, Duo Xu, Chris Ka Pun Mok, Fuchun Zhang, Jingxian Zhao, Rong Zhou & Jincun Zhao
Human coronavirus NL63 (HCoV-NL63) is primarily associated with common cold in children, elderly and immunocompromised individuals. Outbreaks caused by HCoV-NL63 are rare. Here we report a cluster of HCoV-NL63 cases with severe lower respiratory tract infection that arose in Guangzhou, China, in 2018. Twenty-three hospitalized children were confirmed to be HCoV-NL63 positive, and most of whom were hospitalized with severe pneumonia or acute bronchitis. Whole genomes of HCoV-NL63 were obtained using next-generation sequencing. Phylogenetic and...

Hypothesis testing for populations of networks

Li Chen, Jie Zhou & Lizhen Lin
It has become an increasingly common practice in modern science and engineering to collect samples of multiple network data in which a network serves as a basic data object. The increasing prevalence of multiple network data calls for developments of models and theories that can deal with inference problems for populations of networks. In this work, we propose a general procedure for hypothesis testing of networks and in particular, for differentiating distributions of two samples...

Hypothesis testing for populations of networks

Li Chen, Jie Zhou & Lizhen Lin
It has become an increasingly common practice in modern science and engineering to collect samples of multiple network data in which a network serves as a basic data object. The increasing prevalence of multiple network data calls for developments of models and theories that can deal with inference problems for populations of networks. In this work, we propose a general procedure for hypothesis testing of networks and in particular, for differentiating distributions of two samples...

Alleviation of refractory IgA nephropathy by intensive fecal microbiota transplantation: the first case reports

Jin Zhao, Ming Bai, Xiaoxia Yang, Yan Wang, Rong Li & Shiren Sun
Gut dysbiosis may be implicated in the pathogenesis of IgA nephropathy (IgAN) through immune and/or metabolite pathways. Fecal microbiota transplantation (FMT) could reestablish the micro-ecological balance in IgAN, although this has never been attempted before. We explored whether FMT could be efficacious in treating IgAN in two patients with refractory IgAN. Two Chinese female patients with IgAN failed to achieve clinical remission after receiving several rounds of immunosuppressive therapy and suffered from unbearable adverse effects...

Uncovering antiobesity-related hypertension targets and mechanisms of metformin, an antidiabetic medication

Lu Yang, Jianxin Yang, Xiao Liang, Wenjun Huang, Xiaoxi Zhang & Rong Li
Metformin, a common clinical drug used to treat diabetes mellitus, is found with potential antiobese actions as reported in increasing evidences. However, the detailed mechanisms of metformin-antiobesity-related hypertension remain unrevealed. We have utilized the bioinformatics strategy, including network pharmacology and molecular docking analyses, to uncover pharmacological targets and molecular pathways of bioactive compounds against clinical disorders, such as cancers, coronavirus disease 2019. In this report, the in-silico approaches using network pharmacology and molecular docking was...

Design, synthesis, and evaluation of chalcone-Vitamin E-donepezil hybrids as multi-target-directed ligands for the treatment of Alzheimer’s disease

Zhipei Sang, Qing Song, Zhongcheng Cao, Yong Deng & Li Zhang
A novel series of chalcone-Vitamin E-donepezil hybrids was designed and developed based on multitarget-directed ligands (MTDLs) strategy for treating Alzheimer’s disease (AD). The biological results revealed that compound 17f showed good AChE inhibitory potency (ratAChE IC50 = 0.41 µM; eeAChE IC50 = 1.88 µM). Both the kinetic analysis and docking study revealed that 17f was a mixed type AChE inhibitor. 17f was also a good antioxidant (ORAC = 3.3 eq), selective metal chelator and huMAO-B...

Heterogeneous catalytic activation of peroxymonosulfate by Ag@Cu2O composite for Au3+ detection

Runmian Ming, Cailing Zhang, Liangbo Xie, Jing Chang & Yi Li
Although gold (Au) plays an important role in many fields, the residual Au3+ ion in our natural environment is one of the most noxious heavy metal ions for animals and plants. It is of great significance to develop an efficient and simple detection method for Au3+. Based on heterogeneous catalytic activation of peroxymonosulfate (PMS) by Ag@Cu2O nanoparticles (Ag@Cu2O NPs), a novel, visible and convenient strategy for Au3+ detection was developed. The well-dispersive Ag@Cu2O NPs could...

Heterogeneous catalytic activation of peroxymonosulfate by Ag@Cu2O composite for Au3+ detection

Runmian Ming, Cailing Zhang, Liangbo Xie, Jing Chang & Yi Li
Although gold (Au) plays an important role in many fields, the residual Au3+ ion in our natural environment is one of the most noxious heavy metal ions for animals and plants. It is of great significance to develop an efficient and simple detection method for Au3+. Based on heterogeneous catalytic activation of peroxymonosulfate (PMS) by Ag@Cu2O nanoparticles (Ag@Cu2O NPs), a novel, visible and convenient strategy for Au3+ detection was developed. The well-dispersive Ag@Cu2O NPs could...

Quantitative proteomics reveals that dormancy-related proteins mediate the attenuation in mycobacterium strains

Hong Wang, Li Wan, Jiahui Shi, Tao Zhang, Huiming Zhu, Songhao Jiang, Shuhong Meng, Shujia Wu, Jinshuai Sun, Lei Chang, Liqun Zhang, Kanglin Wan, Jiaqi Yang, Xiuqin Zhao, Haican Liu, Yao Zhang, Erhei Dai & Ping Xu
Although members of the Mycobacterium tuberculosis complex (MTBC) exhibit high similarity, they are characterized by differences with respect to virulence, immune response, and transmissibility. To understand the virulence of these bacteria and identify potential novel therapeutic targets, we systemically investigated the total cell protein contents of virulent H37Rv, attenuated H37Ra, and avirulent M. bovis BCG vaccine strains at the log and stationary phases, based on tandem mass tag (TMT) quantitative proteomics. Data analysis revealed that...

Temporal expression study of miRNAs in the crown tissues of winter wheat grown under natural growth conditions

Menglei Wang, Chenhui Yang, Kangning Wei, Miao Zhao, Liqiang Shen, Jie Ji, Li Wang, Daijing Zhang, Junqiang Guo, Yun Zheng, Juanjuan Yu, Mo Zhu, Haiying Liu & Yong-Fang Li
Abstract Background Winter wheat requires prolonged exposure to low temperature to initiate flowering (vernalization). Shoot apical meristem of the crown is the site of cold perception, which produces leaf primordia during vegetative growth before developing into floral primordia at the initiation of the reproductive phase. Although many essential genes for winter wheat cold acclimation and floral initiation have been revealed, the importance of microRNA (miRNA) meditated post-transcriptional regulation in crowns is not well understood. To...

Temporal expression study of miRNAs in the crown tissues of winter wheat grown under natural growth conditions

Menglei Wang, Chenhui Yang, Kangning Wei, Miao Zhao, Liqiang Shen, Jie Ji, Li Wang, Daijing Zhang, Junqiang Guo, Yun Zheng, Juanjuan Yu, Mo Zhu, Haiying Liu & Yong-Fang Li
Abstract Background Winter wheat requires prolonged exposure to low temperature to initiate flowering (vernalization). Shoot apical meristem of the crown is the site of cold perception, which produces leaf primordia during vegetative growth before developing into floral primordia at the initiation of the reproductive phase. Although many essential genes for winter wheat cold acclimation and floral initiation have been revealed, the importance of microRNA (miRNA) meditated post-transcriptional regulation in crowns is not well understood. To...

The significant immune escape of pseudotyped SARS-CoV-2 variant Omicron

Li Zhang, Qianqian Li, Ziteng Liang, Tao Li, Shuo Liu, Qianqian Cui, Jianhui Nie, Qian Wu, Xiaowang Qu, Weijin Huang & Youchun Wang
The emergence of Omicron/BA.1 has brought new challenges to fight against SARS-CoV-2. A large number of mutations in the Spike protein suggest that its susceptibility to immune protection elicited by the existing COVID-19 infection and vaccines may be altered. In this study, we constructed the pseudotyped SARS-CoV-2 variant Omicron. The sensitivity of 28 serum samples from COVID-19 convalescent patients infected with SARS-CoV-2 original strain was tested against pseudotyped Omicron as well as the other variants...

A novel immune-related long non-coding RNA signature improves the prognosis prediction in the context of head and neck squamous cell carcinoma

Lin Chen, Zhimou Cai, Kexing Lyu, Zhiwei Cai & Wenbin Lei
The tumor immune microenvironment plays an important role in head and neck squamous cell carcinoma (HNSCC). Reliable prognostic signatures able to accurately predict the immune landscape and survival rate of HNSCC patients are crucial to ensure an individualized/effective treatment. Here, we used HNSCC transcriptomic and clinical data retrieved from The Cancer Genome Atlas and identified differentially expressed immune-related long non-coding RNAs (DEirlncRNAs). DEirlncRNA pairs were recognized using univariate analysis. Cox and Lasso regression analyses were...

Prediction of intrahepatic cholestasis of pregnancy in the first 20 weeks of pregnancy

Xinyuan Zhang, Yu Chen, Stephen Salerno, Yi Li, Libin Zhou, Xiaoxi Zeng & Huafeng Li
Intrahepatic cholestasis of pregnancy (ICP) is a pregnancy-specific liver disease associated with a significant risk of fetal complications including pre-term delivery and fetal death. Typically, it was diagnosed in the third trimester of pregnancy. This study utilized characteristics from routine maternal examinations in the first 20 weeks’ gestation to predict ICP in pregnant women. This is a retrospective case-control study. 13,329 medical records were collected on pregnant women presenting to the West China Second University...

Four new secoiridoids from the stem barks of Syringa reticulata (Bl.) Hara

Shuang Guo, Yan Liu, Yan-Ping Sun, Juan Pan, Wei Guan, Xiao-Mao Li, Si-Yi Wang, Adnan Mohammed Algradi, Bing-You Yang & Hai-Xue Kuang
Four new secoiridoids, syrretoside A (1), syrretoside B (2), 5β, 8β-syrretaglucone C(3), 5β, 8α-syrretaglucone C (4), together with eight known secoiridoids (5–12), were isolated from the stem barks of Syringa reticulata (Bl.) Hara. The structures of isolated compounds were established based on the physical and chemical means, NMR spectroscopy, high-resolution mass spectrometry (HR-ESI-MS), and circular dichroism spectrum (CD), as well as in comparison with the literature. The cytotoxicity of isolated compounds was investigated using CCK8...

MicroRNA-146b-3p regulates the dysfunction of vascular smooth muscle cells via repressing phosphoinositide-3 kinase catalytic subunit gamma

Xijing Zhuang, Feng Gao, Lei Shi, Wei Liu, Wenjun Wang, Xuezhi He & Yang Gao
MicroRNAs are crucial regulators in the phenotype switch of vascular smooth muscle cells (VSMCs). Nonetheless, the role of miR-146b-3p in VSMCs remains unclear. In the present study, platelet-derived growth factor-BB (PDGF-BB) at different concentrations was employed to stimulate VSMCs for different times, to establish the model of VSMC dysfunction. The relative expression of miR-146b-3p was quantified by quantitative real-time polymerase chain reaction (qRT-PCR). The proliferation of VSMCs was measured by BrdU assay. Flow cytometry analysis...

Alleviation of refractory IgA nephropathy by intensive fecal microbiota transplantation: the first case reports

Jin Zhao, Ming Bai, Xiaoxia Yang, Yan Wang, Rong Li & Shiren Sun
Gut dysbiosis may be implicated in the pathogenesis of IgA nephropathy (IgAN) through immune and/or metabolite pathways. Fecal microbiota transplantation (FMT) could reestablish the micro-ecological balance in IgAN, although this has never been attempted before. We explored whether FMT could be efficacious in treating IgAN in two patients with refractory IgAN. Two Chinese female patients with IgAN failed to achieve clinical remission after receiving several rounds of immunosuppressive therapy and suffered from unbearable adverse effects...

Immunosuppressive effect of PLGA-FK506-NPs in treatment of acute cardiac rejection via topical subcutaneous injection

Cheng Deng, Qiaofeng Jin, Ya Wu, Huiling Li, Luyang Yi, Yihan Chen, Tang Gao, Wenyuan Wang, Jing Wang, Qing Lv, Yali Yang, Jia Xu, Wenpei Fu, Li Zhang & Mingxing Xie
FK506, a first-line immunosuppressant, is routinely administered orally and intravenously to inhibit activation and proliferation of T cells after heart transplantation (HT). Current administration route is not conducive enough to exert its efficacy in lymphatic system. Herein, we proposed that subcutaneous (SC) administration of FK506-loaded nanoparticles (PLGA-FK506-NPs) would be valuable for treating acute rejection after HT. The biodistribution and pharmacokinetic study revealed that it could effectively deliver FK506 to the lymph nodes (LNs) due to...

Immunosuppressive effect of PLGA-FK506-NPs in treatment of acute cardiac rejection via topical subcutaneous injection

Cheng Deng, Qiaofeng Jin, Ya Wu, Huiling Li, Luyang Yi, Yihan Chen, Tang Gao, Wenyuan Wang, Jing Wang, Qing Lv, Yali Yang, Jia Xu, Wenpei Fu, Li Zhang & Mingxing Xie
FK506, a first-line immunosuppressant, is routinely administered orally and intravenously to inhibit activation and proliferation of T cells after heart transplantation (HT). Current administration route is not conducive enough to exert its efficacy in lymphatic system. Herein, we proposed that subcutaneous (SC) administration of FK506-loaded nanoparticles (PLGA-FK506-NPs) would be valuable for treating acute rejection after HT. The biodistribution and pharmacokinetic study revealed that it could effectively deliver FK506 to the lymph nodes (LNs) due to...

Colistin-resistance gene mcr in clinical carbapenem-resistant Enterobacteriaceae strains in China, 2014–2019

Hong Huang, Ning Dong, Lingbin Shu, Jiayue Lu, Qiaoling Sun, Edward Wai-Chi Chan, Sheng Chen & Rong Zhang
To investigate whether introduction of colistin into the clinical settings selected colistin-resistant CRE, we performed molecular epidemiological study of 1868 CRE strains collected from different geographical locales in China during the period 2014–2019. 1755 (96.18%) isolates carried the carbapenemase genes blaKPC and blaNDM; 14 Escherichia coli isolates (0.75%) carrying mcr-1 and blaNDM (MCR-CREC) were also identified. Importantly, the number and relative prevalence of MCR-CREC isolates increased from 5 (0.41%) to 9 (1.38%) after introduction of...

Downregulation of Smad4 expression confers chemoresistance against imatinib mesylate to chronic myeloid leukemia K562 cells

Jiangzhao Zhang, Min Zhang, Yan Liang, Min Liu & Zhiping Huang
Objective: Imatinib mesylate (IM), a tyrosine kinase inhibitor, exhibits clinically prominent effects against chronic myeloid leukemia (CML); however, a few patients have shown resistance to IM treatment, resulting in disease progression. Smad4 is a tumor inhibitor that transduces TGF-β signaling and modulates genomic stability. Previous studies have indicated that decreased Smad4 expression played a bidirectional role in chemosensitivity in many types of cancers. Therefore, this study aims to evaluate the association between IM sensitivity and...

The significant immune escape of pseudotyped SARS-CoV-2 variant Omicron

Youchun Wang, Li Zhang, Qianqian Li, Ziteng Liang, Tao Li, Shuo Liu, Qianqian Cui, Jianhui Nie, Qian Wu, Xiaowang Qu & Weijin Huang
The emergence of Omicron/BA.1 has brought new challenges to fight against SARS-CoV-2. A large number of mutations in the Spike protein suggest that its susceptibility to immune protection elicited by the existing COVID-19 infection and vaccines may be altered. In this study, we constructed the pseudotyped SARS-CoV-2 variant Omicron. The sensitivity of 28 serum samples from COVID-19 convalescent patients infected with SARS-CoV-2 original strain was tested against pseudotyped Omicron as well as the other variants...

Orientin mediates protection against MRSA-induced pneumonia by inhibiting Sortase A

Li Wang, Shisong Jing, Han Qu, Kai Wang, Yajing Jin, Ying Ding, Lin Yang, Hangqian Yu, Yan Shi, Qianxue Li & Dacheng Wang
Drug-resistant pathogenic Staphylococcus aureus (S. aureus) has severely threatened human health and arouses widespread concern. Sortase A (SrtA) is an essential virulence factor of S. aureus, which is responsible for the covalent anchoring of a variety of virulence-related proteins to the cell wall. SrtA has always been regarded as an ideal pharmacological target against S. aureus infections. In this research, we have determined that orientin, a natural compound isolated from various medicinal plants, can effectively...

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  • Southwest Medical University
    148
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