3,909 Works

Dibenzofurans from Crataegus oresbia and their lipid-lowering activity

Ying Wang, Li-Juan Lang, Qi-Jie Zhu, Xiu-Rong Wu, Lei Shen, Bei Jiang & Chao-Jiang Xiao
Three new dibenzofurans, 2-hydroxy-3,4-dimethoxydibenzofuran (1), 2,8-dihydroxy-3,4,9-trimethoxydibenzofuran (5) and 2-hydroxy-3,4,6,8-tetramethoxydibenzofuran (6), together with three known dibenzofurans 1-hydroxy-2,3,4-trimethoxydibenzofuran (2), 2-hydroxy-3,4,6-trimethoxydibenzofuran (3) and 1,6-dihydroxy-2,3,4-trimethoxydibenzofuran (4), were isolated from the twigs and leaves of Crataegus oresbia. Their structures were identified by the comprehensive analyses of the physicochemical properties and spectroscopic data (NMR and HR-ESI-MS). Compounds 1–3 showed significant in vitro lipid-lowering activities, especially compound 3 was stronger than simvastatin.

Regulation of microRNA miR-197-3p/CDC28 protein kinase regulatory subunit 1B (CKS1B) axis by Circular RNA hsa_circ_0000285 promotes glioma progression

Tao Deng, Yang Liu, Yanlong Yang, Leyong Yuan, Fangfang Liu, Xiaobo Wang, Qiuying Zhang & Mingshui Xie
Circular RNA circ_0000285 is differentially expressed in several malignancies; however, its role in gliomas is under investigation. Reverse transcription quantitative polymerase chain reaction was conducted to evaluate the expression of circ_0000285, miR-197-3p, and CDC28 protein kinase regulatory subunit 1B (CKS1B) in glioma tissues and cells. Cell Counting Kit-8 and Transwell invasion assays coupled with Western blotting analysis using anti-Bax and anti-Bcl-2 antibodies were performed to evaluate cell proliferation, invasion, and apoptosis. Luciferase reporter and AGO2...

Nucleosides and amino acids, isolated from Cordyceps sinensis, protected against cyclophosphamide-induced myelosuppression in mice

Yu Zhang, Jie Liu, Yan Wang, Chengpeng Sun, Wenjia Li, Jianjian Qiu, Yanling Qiao, Fan Wu, Xiaokui Huo, Yue An, Baojing Zhang, Shuangcheng Ma, Jian Zheng & Xiaochi Ma
The material basis of Cordyceps sinensis (Berk.) Sacc has not yet been well understood and natural C. sinensis resources are very rare. The present study aimed to clarify the substance basis and compare the protective effect of natural and artificially-cultivated C. sinensis against cyclophosphamide (CTX)-induced myelosuppression. Both natural and artificially-cultivated C. sinensis effectively improved CTX-induced decrease of peripheral blood counts and hemopoietic growth factors, pathological changes, and apoptosis of bone marrow. Importantly, artificially-cultivated C. sinensis...

Intercity innovation collaboration and the role of high-speed rail connections: evidence from Chinese co-patent data

Li Yao & Jun Li
This study explores the extent to which changes in transport infrastructure counterbalance pre-existing geographical friction and foster innovation collaboration, using the Chinese high-speed rail (HSR) construction as a quasi-natural experiment. Using a comprehensive dataset of city-pair co-patents from 2005 to 2018, we show that HSR connections significantly increase intercity co-patents, patent quality and collaborative partnerships, and such effects are strongest for city-pairs within 250 km and decrease for longer distances. Moreover, the HSR effect is...

Optimization of fermentation conditions for the production of acidophilic β-glucosidase by Trichoderma reesei S12 from mangrove soil

Nan Sun, Xiaoxuan Liu, Xuemei Wang, Huiyu Shi, Haiwen Zhang, Lianbin Li, Wei Na & Qingfeng Guan
Vegetative biomass contains a large number of macromolecular substances such as cellulose and hemicellulose, which can be used by microorganisms to produce biofuels and other chemical byproducts. In this study, a filamentous fungus with high β-glucosidase activity was isolated from mangrove soil in Hainan Province, China. Through morphological identification and internal transcribed spacer (ITS) sequence analysis, the strain was identified as Trichoderma reesei. Fermentation conditions were optimized with the response surface method to improve β-glucosidase...

Circ_0017639 facilitates proliferative, migratory, and invasive potential of non-small cell lung cancer (NSCLC) cells via PI3K/AKT signaling pathway

Hong-Bo Zhang, Xiang-Ming Qiu, Yi-Chao Zhang, Ting-Ting Huang, Zhan-Jie Zuo & Tao Zhang
Non-small cell lung cancer (NSCLC) has increased morbidity and mortality rate worldwide. The current NSCLS therapies are associated with poor outcomes and need further improvement. CircRNAs were shown to regulate NSCLC progression. However, little is known re garding the functions and mechanisms of circ_0017639 in NSCLC, which requires further extensive studies. The circ_0017639 expression in NSCLC tissues and cell lines was evaluated via qRT-RCR. Moreover, using ectopic plasmid incorporation and shRNA assays, we analyzed the...

Bone marrow mesenchymal stem cells-derived exosomal microRNA-124-3p attenuates hypoxic-ischemic brain damage through depressing tumor necrosis factor receptor associated factor 6 in newborn rats

Weijie Min, Yina Wu, Yibin Fang, Bo Hong, Dongwei Dai, Yu Zhou, Jianmin Liu & Qiang Li
Mesenchymal stem cells (MSCs)-derived exosomes (Exo) are beneficial in the use of brain damages. Restrictively, the mechanism of Exo expressing miR-124-3p in hypoxic-ischemic brain damage (HIBD) is not completely comprehended. Thereupon, this work was put forward to reveal the action of bone marrow MSCs-derived Exo (BMSCs-Exo) expressing miR-124-3p in the illness. BMSCs were isolated and transfected with miR-124-3p agomir. Then, BMSCs-Exo were extracted and identified. The newborn HIBD rats were injected with miR-124-3p-modified BMSCs-Exo or...

Bone marrow mesenchymal stem cells-derived exosomal microRNA-124-3p attenuates hypoxic-ischemic brain damage through depressing tumor necrosis factor receptor associated factor 6 in newborn rats

Weijie Min, Yina Wu, Yibin Fang, Bo Hong, Dongwei Dai, Yu Zhou, Jianmin Liu & Qiang Li
Mesenchymal stem cells (MSCs)-derived exosomes (Exo) are beneficial in the use of brain damages. Restrictively, the mechanism of Exo expressing miR-124-3p in hypoxic-ischemic brain damage (HIBD) is not completely comprehended. Thereupon, this work was put forward to reveal the action of bone marrow MSCs-derived Exo (BMSCs-Exo) expressing miR-124-3p in the illness. BMSCs were isolated and transfected with miR-124-3p agomir. Then, BMSCs-Exo were extracted and identified. The newborn HIBD rats were injected with miR-124-3p-modified BMSCs-Exo or...

Long non-coding RNA terminal differentiation-induced non-coding RNA regulates cisplatin resistance of choroidal melanoma by positively modulating extracellular signal-regulated kinase 2 via sponging microRNA-19b-3p

Wei Li, Aiqin Nie, Longyu Jin, Yubo Cui, Ning Xie & Gaohua Liang
In the present study, we aimed to investigate the role of long non-coding RNA terminal differentiation-induced non-coding RNA (TINCR) in cisplatin (DDP) resistance of choroidal melanoma (CM) and the potential molecular mechanisms. CM and non-CM tissues were collected from 60 CM patients. DDP-resistant CM cells were obtained by selection with linearly increased DDP treatment. The expression levels of TINCR, microR-19b-3p (miR-19b-3p), and extracellular signal-regulated kinase 2 (ERK-2) were detected by quantitative real-time PCR. Cholecystokinin octapeptide...

AFAP1 antisense RNA 1 promotes retinoblastoma progression by sponging microRNA miR-545-3p that targets G protein subunit beta 1

Wenting Tang, Li Zhang, Jing Li & Yu Guan
The oncogenic role of actin filament-associated protein 1 antisense RNA 1 (AFAP1-AS1) has been reported in retinoblastoma (RB). However, the underlying regulatory mechanisms remain poorly understood. In this study, reverse transcription-quantitative polymerase chain reaction (RT-qPCR) and Western blotting were performed to analyze the expression of AFAP1-AS1, microRNA miR-545-3p, or G protein subunit beta 1 (GNB1). Cell Counting Kit-8 (CCK-8) and Transwell migration assays were used to detect cell proliferation and migration. In addition, caspase-3 activity...

Early Cretaceous rapid exhumation processes in the southern Great Xing’an Range, NE China: implications for extensional geodynamics

Wen Zhang, Shuangfeng Zhao, Wen Chen, Jingbo Sun, Ze Shen, Qiuyi Du & Zhi Li
The Mesozoic-Cenozoic geological evolution of the southern Great Xing’an Range (GXR) has long been controversial since it is located in the superposed region of different tectonic regimes and involves complex interactions. Here, we present low-temperature thermochronological data from granitoids emplaced in multiple magmatic stages to delineate the tectono-thermal history and further understand the geodynamic process. Most zircon and apatite (U-Th)/He ages, within error, indicate Early Cretaceous: the zircon average (U-Th)/He ages range from 146.7 ±...

Primary graft failure following allogeneic hematopoietic stem cell transplantation: risk factors, treatment and outcomes

Juan Chen, Aiming Pang, Yuanqi Zhao, Li Liu, Runzhi Ma, Jialin Wei, Xin Chen, Yi He, Donglin Yang, Rongli Zhang, Weihua Zhai, Qiaoling Ma, Erlie Jiang, Mingzhe Han, Jiaxi Zhou & Sizhou Feng
Graft failure (GF) is an intractable complication of transplantation, which can severely affect the efficacy of the graft; however, the characteristics, incidence, and risk factors of primary GF have not been well described. This study aimed to analyze the risk factors and outcomes of primary GF to swiftly identify high-risk patients for GF. We performed a case-control study with a case-control ratio of 1:4 with 869 patients who underwent allogeneic hematopoietic stem cell transplantation (allo-HSCT)...

Therapeutic targeting of the USP2-E2F4 axis inhibits autophagic machinery essential for zinc homeostasis in cancer progression

Wenjing Xiao, Jianqun Wang, Xiaojing Wang, Shuang Cai, Yanhua Guo, Lin Ye, Dan Li, Anpei Hu, Shikai Jin, Boling Yuan, Yi Zhou, Qilan Li, Qiangsong Tong & Liduan Zheng
Macroautophagy/autophagy is a conserved cellular process associated with tumorigenesis and aggressiveness, while mechanisms regulating expression of autophagic machinery genes in cancers still remain elusive. Herein, we identified E2F4 (E2F transcription factor 4) as a novel transcriptional activator of cytoprotective autophagy crucial for zinc homeostasis in cancer cells. Gain- and loss-of-function studies showed that E2F4 promoted autophagy in a cell cycle-dependent manner, resulting in facilitated degradation of MT (metallothionein) proteins, elevated distribution of Zn2+ within autophagosomes,...

Therapeutic targeting of the USP2-E2F4 axis inhibits autophagic machinery essential for zinc homeostasis in cancer progression

Wenjing Xiao, Jianqun Wang, Xiaojing Wang, Shuang Cai, Yanhua Guo, Lin Ye, Dan Li, Anpei Hu, Shikai Jin, Boling Yuan, Yi Zhou, Qilan Li, Qiangsong Tong & Liduan Zheng
Macroautophagy/autophagy is a conserved cellular process associated with tumorigenesis and aggressiveness, while mechanisms regulating expression of autophagic machinery genes in cancers still remain elusive. Herein, we identified E2F4 (E2F transcription factor 4) as a novel transcriptional activator of cytoprotective autophagy crucial for zinc homeostasis in cancer cells. Gain- and loss-of-function studies showed that E2F4 promoted autophagy in a cell cycle-dependent manner, resulting in facilitated degradation of MT (metallothionein) proteins, elevated distribution of Zn2+ within autophagosomes,...

Design, synthesis and biological evaluation of a series of dianilinopyrimidines as EGFR inhibitors

Longjia Yan, Qin Wang, Li Liu & Yi Le
This paper described our efforts to develop dianilinopyrimidines as novel EGFR inhibitors. All the target compounds were tested for inhibitory effects against wild type EGFR (EGFRwt) and three tumour cells, including A549, PC-3, and HepG2. Some of the compounds performed well in antitumor activities. Especially, compound 4c 2-((2-((4-(3-fluorobenzamido)phenyl)amino)-5-(trifluoromethyl) pyrimidin-4-yl)amino)-N-methylthiophene-3-carboxamide showed higher anti-tumour activities than Gefitinib. The IC50 values of compound 4c against A549, PC-3, and HepG2. reached 0.56 μM, 2.46 μM, and 2.21 μM, respectively....

Effect of the magnetic nanoparticle concentration on the electro-optical properties of the polymer-dispersed liquid crystals

Xiangshen Meng, Jian Li, Yueqiang Lin, Xiaodong Liu, Jianwei Zhao, Guoqing Li, Decai Li & Zhenghong He
In this paper, we investigated the electro-optical properties of the dilute magnetic polymer dispersed liquid crystals (PDLCs) prepared with the liquid crystal colloids containing low concentrations of γ-Fe2O3 nanoparticles. The doped nanoparticles have hardly changed the morphology of PDLCs, but they have significantly changed the threshold voltage, saturation voltage, and contrast ratio of PDLCs. Such changes result from ionic adsorption in competition with the concentration of the nanoparticles. When the concentration of the nanoparticles was...

Effect of the magnetic nanoparticle concentration on the electro-optical properties of the polymer-dispersed liquid crystals

Xiangshen Meng, Jian Li, Yueqiang Lin, Xiaodong Liu, Jianwei Zhao, Guoqing Li, Decai Li & Zhenghong He
In this paper, we investigated the electro-optical properties of the dilute magnetic polymer dispersed liquid crystals (PDLCs) prepared with the liquid crystal colloids containing low concentrations of γ-Fe2O3 nanoparticles. The doped nanoparticles have hardly changed the morphology of PDLCs, but they have significantly changed the threshold voltage, saturation voltage, and contrast ratio of PDLCs. Such changes result from ionic adsorption in competition with the concentration of the nanoparticles. When the concentration of the nanoparticles was...

The role of gut microbiota in patients with benign and malignant brain tumors: a pilot study

Haixiao Jiang, Wei Zeng, Xiaoli Zhang, Yunlong Pei, Hengzhu Zhang & Yuping Li
Gut microbiota is associated with the growth of various tumors, including malignant gliomas, through the brain-gut axis. Moreover, the gut microbiota in patients with malignant tumors may considerably differ from those with benign tumors. However, the associations of gut microbiota with benign and malignant brain tumors remain unclear. Hence, in order to explore these underlying relationships, patients with benign meningioma (n = 32), malignant glioma (n = 27), and healthy individuals (n = 41) were...

Reproducibility of the Infinium methylationEPIC BeadChip assay using low DNA amounts

Steffan Noe Christiansen, Jeppe Dyrberg Andersen, Marie-Louise Kampmann, Jing Liu, Mikkel Meyer Andersen, Jacob Tfelt-Hansen & Niels Morling
The Infinium MethylationEPIC BeadChip (EPIC) is a reliable method for measuring the DNA methylation of more than 850,000 CpG positions. In clinical and forensic settings, it is critical to be able to work with low DNA amounts without risking reduced reproducibility. We evaluated the EPIC for a range of DNA amounts using two-fold serial dilutions investigated on two different days. While the β-value distributions were generally unaffected by decreasing DNA amounts, the median squared Pearson’s...

Study and numerical analysis of Von Mises stress of a new tumor-type distal femoral prosthesis comprising a peek composite reinforced with carbon fibers: finite element analysis

Yu Guo & Wei Guo
Research on carbon-fiber-reinforced polyetheretherketone (CF-PEEK/CFR-PEEK) as a bone tumor joint prosthesis remains limited. Herein we numerically determine the feasibility of CF-PEEK material containing 30% Wt carbon fiber (CF30-PEEK) as a material for the dual-action tumor-type distal femoral prosthesis. Use CT scan method to build a complete finite element model of the knee joint. Simulate the resection of the distal femoral tumor, and then reconstruct it with the dual-action tumor-type distal femoral prosthesis. The femoral condyle...

Network pharmacology and in vitro experimental verification to explore the mechanism of Sanhua decoction in the treatment of ischaemic stroke

Wei Zhang, Li Zhang, Wen jun Wang, Shanbo Ma, Mingming Wang, Minna Yao, Ruili Li, Wei wei Li, Xian Zhao, Dongmei Hu, Yi Ding & Jingwen Wang
Stroke is an illness with high morbidity, disability and mortality that presents a major clinical challenge. Sanhua decoction (SHD) has been widely used to treat ischaemic stroke in the clinic. However, the potential mechanism of SHD remains unknown. To elucidate the multitarget mechanism of SHD in ischaemic stroke through network pharmacology and bioinformatics analyses. Network pharmacology and experimental validation approach was used to investigate the bioactive ingredients, critical targets and potential mechanisms of SHD against...

One novel naphthalene derivative and other constituents with anti-complementary activities from the aerial parts of Dracocephalum moldavica

Jia-Ming Wang, Jin-Feng Sun, Long Jin, Meng-Jie Wang, Yan-Yan Huang, Mei Jin, Wei Zhou & Gao Li
One novel naphthalene derivative, 2-octa-2′,4′,6′-atriynenaphthalene (1), together with eighteen known compounds (2–19) were isolated from the aerial parts of Dracocephalum moldavica L. Compounds 2, 8, 10, 13, 15–17 and 19 were obtained from the family Lamiaceae for the first time, and compounds 11 and 18 were firstly identified from the genus of Dracocephalum. All the isolates were evaluated for anti-complementary activities through the classical and alternative pathways, and the targets of the most active compounds...

A transcriptomic analysis of neuropathic pain in the anterior cingulate cortex after nerve injury

Yu Zhang, Shiwei Jiang, Fei Liao, Zhifeng Huang, Xin Yang, Yu Zou, Xin He, Qulian Guo & Changsheng Huang
The anterior cingulate cortex (ACC) is a core brain region processing pain emotion. In this study, we performed RNA sequencing analysis to reveal transcriptomic profiles of the ACC in a rat chronic constriction injury (CCI) model. A total of 1628 differentially expressed genes (DEGs) were identified by comparing sham-operated rats with rats of 12 hours, 1, 3, 7, and 14 days after surgery, respectively. Although these inflammatory-related DEGs were generally increased after CCI, different kinetics...

Exogenous H2S reverses high glucose-induced endothelial progenitor cells dysfunction via regulating autophagy

Wenxue Ma, Tingting Zhong, Junqiu Chen, Xiao Ke, Huihua Zuo & Qiang Liu
This study aims to determine the effect of exogenous hydrogen sulfide (H2S) under high glucose (HG)-induced injury in endothelial progenitor cells (EPCs), and to explore the possible underlying mechanisms. Mononuclear cells were isolated from the peripheral blood of healthy volunteers by density-gradient centrifugation and identified as late EPCs by immunofluorescence and flow cytometry. EPCs were treated with high concentrations of glucose, H2S, Baf-A1, 3-MA or rapamycin. Cell proliferation, cell migration and tube formation were measured...

Network pharmacology and in vitro experimental verification to explore the mechanism of Sanhua decoction in the treatment of ischaemic stroke

Wei Zhang, Li Zhang, Wen jun Wang, Shanbo Ma, Mingming Wang, Minna Yao, Ruili Li, Wei wei Li, Xian Zhao, Dongmei Hu, Yi Ding & Jingwen Wang
Stroke is an illness with high morbidity, disability and mortality that presents a major clinical challenge. Sanhua decoction (SHD) has been widely used to treat ischaemic stroke in the clinic. However, the potential mechanism of SHD remains unknown. To elucidate the multitarget mechanism of SHD in ischaemic stroke through network pharmacology and bioinformatics analyses. Network pharmacology and experimental validation approach was used to investigate the bioactive ingredients, critical targets and potential mechanisms of SHD against...

Registration Year

  • 2022
    3,909

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  • Text
    3,909

Affiliations

  • Chinese Academy of Medical Sciences & Peking Union Medical College
    3,909
  • Shanghai Jiao Tong University
    2,404
  • Zhejiang University
    2,194
  • Sichuan University
    2,129
  • Fudan University
    2,038
  • Huazhong University of Science and Technology
    1,872
  • Sun Yat-sen University
    1,819
  • Capital Medical University
    1,798
  • Chinese Academy of Sciences
    1,746
  • Nanjing Medical University
    1,603