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315篇 您的检索式:作者名="Man Xu"
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1A complete sequence and comparative analysis of a SARS-associated virus(Isolate BJ01)显示文摘The genome sequence of the Severe Acute Respiratory Syndrome (SARS)-associated virus provides essential information for the identification of pathogen(s), exploration of etiology and evolution, interpretation of transmission and pathogenesis, development of diagnostics, prevention by future vaccination, and treatment by developing new drugs. We report the complete genome sequence and comparative analysis of an isolate (BJ01) of the coronavirus that has been recognized as a pathogen for SARS. The genome is 29725 nt in size and has 11 ORFs (Open Reading Frames). It is composed of a stable region encoding an RNA-dependent RNA polymerase (composed of 2 ORFs) and a variable region representing 4 CDSs (coding sequences) for viral structural genes (the S, E, M, N proteins) and 5 PUPs (putative uncharacterized proteins). Its gene order is identical to that of other known coronaviruses. The sequence alignment with all known RNA viruses places this virus as a member in the family of Coronaviridae. Thirty putative substitutions have been identified by comparative analysis of the 5 SARS- associated virus genome sequences in GenBank. Fifteen of them lead to possible amino acid changes (non-synonymous mutations) in the proteins. Three amino acid changes, with predicted alteration of physical and chemical features, have been detected in the S protein that is postulated to beinvolved in the immunoreactions between the virus and its host. Two amino acid changes have been detected in the Mprotein, which could be related to viral envelope formation. Phylogenetic analysis suggests the possibility of non-human origin of the SARS-associated viruses but provides noevidence that they are man-made. Further efforts should focus on identifying the etiology of the SARS-associated virus and ruling out conclusively the existence of otherpossible SARS-related pathogen(s).QIN E'de ZHU Qingyu YU Man FAN Baochang CHANG Guohui SI Bingyin YANG Bao PENG Wenming JIANG Tao LIU Bohua DENG Yongqiang LIU Hong ZHANG Yu WANG Cui LI Yuquan GAN Yonghua LI Xiaoyu L Fushuang TAN Gang CAO Wuchun, YANG Ruifu Institute of Microbiology and Epidemiology, Chinese Academy of Military Medical Sciences, Beijing 100071, China WANG Jian, LI Wei, XU Zuyuan, LI Yan, WU Qingfa, LIN Wei, CHEN Weijun, TANG Lin, DENG Yajun, HAN Yujun, LI Changfeng, LEI Meng, LI Guoqing, LI Wenjie, L Hong, SHI Jianping, TONG Zongzhong, ZHANG Feng, LI Songgang, LIU Bin, LIU Siqi, DONG Wei, WANG Jun, Gane K-S Wong, YU Jun & YANG Huanming* Beijing Genomics Institute, Chinese Academy of Sciences, Beijing 101300 National Center for Genome Information, Beijing 101300, China 2003Chinese Science Bulletin2003,48,10:121
2血浆同型半胱氨酸水平升高与心血管疾病及各种死亡风险因子的meta分析(英文)显示文摘目的:探讨普通人群血浆同型半胱氨酸水平升高是否能独立预测死亡风险。创新点:通过汇总12篇前瞻性研究,定量分析血浆同型半胱氨酸水平升高与心血管疾病及各种死亡风险因子的关系。方法:通过检索Pub Med和Embase数据库,收集普通人群中血浆同型半胱氨酸水平与死亡关系的前瞻性观察性研究,采用STATA统计软件进行meta分析。结论:血浆同型半胱氨酸水平升高是心血管疾病及各种原因死亡风险增加的一个独立预测因素,在老年人群中尤为明显。Hui-yong PENG Chang-feng MAN Juan XU Yu FAN 2015Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)2015,16,1:46
3Compound Danshen injection improves endotoxin-induced microcirculatory disturbance in rat mesentery显示文摘AIM: To investigate the effect of compound Danshen injection on lipopolysaccharide (LPS)-induced rat mesenteric microcirculatory dysfunctions and the underlying possible mechanism by an inverted intravital microscope and high-speed video camera system. METHODS: LPS was continuously infused through the jugular artery of male Wistar rats at the dose of 2 mg/kg per hour. Changes in mesenteric microcirculation,such as diameters of arterioles and venules,velocity of RBCs in venules,leukocyte rolling,adhesion and emigration,free radicals released from post-capillary venules,FITC- albumin leakage and mast cell degranulation,were observed through an inverted intravital microscope assisted with CCD camera and SIT camera. Meanwhile,the expression of adhesion molecules CD11b/CD18 and the production of free radical in neutrophils,and the expression of intercellular adhesion molecule 1 (ICAM-1) in human umbilical vein endothelial cells (HUVECs) were quantified by flow cytometry (FACS) in vitro. RESULTS: The continuous infusion with LPS resulted in a number of responses in microcirculation,including a significant increase in the positive region of venulestained with Monastral blue B,rolling and adhesion of leukocytes,production of oxygen radical in venular wall,albumin efflux and enhanced mast cell degranulation in vivo,all of which,except for the leukocyte rolling,were attenuated by the treatment with compound Danshen injection. Experiments performed in vitro further revealed that the expression of CD11b/CD18 and the production of oxygen free radical in neutrophils,and the expression of ICAM-1 in HUVECs were increased by exposure to LPS,and they were attenuated by compound Danshen injection. CONCLUSION: These results suggest that compound Danshen injection is an efficient drug with multi-targeting potential for improving the microcirculatory disturbance.Jing-Yan Han Yoshinori Horie Soichiro Miura, Yasutada Akiba Jun Guo Dan Li Jing-Yu Fan Yu-Ying Liu Bai-He Hu Li-Hua An Xin Chang Man Xu De-An Guo Kai Sun Ji-Ying Yang Shu-Ping Fang Ming-Ji Xian Masahiro Kizaki Hiroshi Nagata Toshifumi Hibi 2007World Journal of Gastroenterology2007,13,26:26
4Incidence of Pleural Effusion in Patients with Pulmonary Embolism显示文摘Min Liu Ai Cui Zhen-Guo Zhai Xiao-Juan Guo Man Li Lei-Lei Teng Li-Li Xu Xiao-Juan Wang Zhen Wang Huan-Zhong Shi 2015Chinese Medical Journal2015,,8:25
5Atomically dispersed Au_1 catalyst towards efficient electrochemical synthesis of ammonia显示文摘Tremendous efforts have been devoted to explore energy-efficient strategies of ammonia synthesis to replace Haber–Bosch process which accounts for 1.4% of the annual energy consumption. In this study,atomically dispersed Au_1 catalyst is synthesized and applied in electrochemical synthesis of ammonia under ambient conditions. A high NH_4^+ Faradaic efficiency of 11.1% achieved by our Au_1 catalyst surpasses most of reported catalysts under comparable conditions. Benefiting from efficient atom utilization, an NH_4^+ yield rate of 1,305 lg h^(-1) mg_(Au)^(-1) has been reached, which is roughly 22.5 times as high as that by supported Au nanoparticles. We also demonstrate that by employing our Au_1 catalyst, NH4+can be electrochemically produced directly from N_2 and H_2 with an energy utilization rate of 4.02 mmol kJ^(-1). Our study provides a possibility of replacing the Haber–Bosch process with environmentally benign and energy-efficient electrochemical strategies.Xiaoqian Wang Wenyu Wang Man Qiao Geng Wu Wenxing Chen Tongwei Yuan Qian Xu Min Chen Yan Zhang Xin Wang Jing Wang Jingjie Ge Xun Hong Yafei Li Yuen Wu Yadong Li 2018Science Bulletin2018,63,19:22
6Near-diffraction-limited linearly polarized narrow-linewidth random fiber laser with record kilowatt output显示文摘In this paper, we propose and experimentally investigate a linearly polarized narrow-linewidth random fiber laser(RFL) operating at 1080 nm and boost the output power to kilowatt level with near-diffraction-limited beam quality using a master oscillation power amplifier. The RFL based on a half-opened cavity, which is composed of a linearly polarized narrow-linewidth fiber Bragg grating and a 500 m piece of polarization-maintained Ge-doped fiber, generates a 0.71 W seed laser with an 88 pm full width at half-maximum(FWHM) linewidth and a 22.5 dB polarization extinction ratio(PER) for power scaling. A two-stage fiber amplifier enhances the seed laser to the maximal 1.01 k W with a PER value of 17 dB and a beam quality of M_x^2=1.15 and M_y^2=1.13. No stimulated Brillouin scattering effect is observed at the ultimate power level, and the FWHM linewidth of the amplified random laser broadens linearly as a function of the output power with a coefficient of about 0.1237 pm∕W.To the best of our knowledge, this is the first demonstration of a linearly polarized narrow-linewidth RFL with even kilowatt-level near-diffraction-limited output, and further performance scaling is ongoing.JIANGMING XU LONG HUANG MAN JIANG JUN YE PENGFEI MA JINYONG LENG JIAN WU HANWEI ZHANG PU ZHOU 2017Photonics Research2017,5,4:20
7Effects of warming and clipping on plant and soil properties of an alpine meadow in the Qinghai-Tibetan Plateau, China显示文摘Climate warming and livestock grazing are known to have great influences on alpine ecosystems like those of the Qinghai-Tibetan Plateau(QTP) in China. However, it is lacking of studies on the effects of warming and grazing on plant and soil properties in these alpine ecosystems. In this study, we reported the related research from manipulative experiment in 2010–2012 in the QTP. The aim of this study was to investigate the individual and combined effects of warming and clipping on plant and soil properties in the alpine meadow ecosystem. Infrared radiators were used to simulate climate warming starting in July 2010, while clipping was performed once in October 2011 to simulate the local livestock grazing. The experiment was designed as a randomized block consisting of five replications and four treatments: control(CK), warming(W), clipping(C) and warming+clipping combination(WC). The plant and soil properties were investigated in the growing season of the alpine meadow in 2012. The results showed that W and WC treatments significantly decreased relative humidity at 20-cm height above ground as well as significantly increases air temperature at the same height, surface temperature, and soil temperature at the depth of 0–30 cm. However, the C treatment did not significantly decrease soil moisture and soil temperature at the depth of 0–60 cm. Relative to CK, vegetation height and species number increased significantly in W and WC treatment, respectively, while vegetation aboveground biomass decreased significantly in C treatment in the early growing season. However, vegetation cover, species diversity, belowground biomass and soil properties at the depth of 0–30 cm did not differ significantly in W, C and WC treatments. Soil moisture increased at the depth of 40–100 cm in W and WC treatments, while belowground biomass, soil activated carbon, organic carbon and total nitrogen increased in the 30–50 cm soil layer in W, C and WC treatments. Although the initial responses of plant and soil properties to experimental warming and clipping were slow and weak, the drought induced by the downward shift of soil moisture in the upper soil layers may induce plant belowground biomass to transfer to the deeper soil layers. This movement would modify the distributions of soil activated carbon, organic carbon and total nitrogen. However, long-term data collection is needed to further explain this interesting phenomenon.Man Hou XU Fei PENG Quan Gang YOU Jian GUO Xia Fei TIAN Min LIU Xian XUE 2015Journal of Arid Land2015,7,2:14
8Generation of dopaminergic neurons directly from mouse fibroblasts and fibroblast-derived neural progenitors显示文摘Chao Sheng Qinyuan Zheng Jianyu Wu Zhen Xu Lisi Sang Libin Wang Changlong Guo Wanwan Zhu Man Tong Lei Liu Wei Li Zhong-Hua Liu Xiao-Yang Zhao Liu Wang Zhiguo Chen Qi Zhou 2012Cell Research2012,22,4:12
9Garcinol inhibits esophageal cancer metastasis by suppressing the p300 and TGF-β1 signaling pathways显示文摘Metastasis causes the main lethality in esophageal cancer patient.Garcinol,a natural compound extracted from Gambogic genera,is a histone acetyltransferase(HAT)inhibitor that has shown anticancer activities such as cell cycle arrest and apoptosis induction.In this study,we investigated the effects of garcinol on the metastasis of esophageal cancer in vitro and in vivo.We found that garcinol(5-15μM)dose-dependently inhibited the migration and invasion of human esophageal cancer cell lines KYSE150 and KYSE450 in wound healing,transwell migration,and Matrigel invasion assays.Furthermore,garcinol treatment dose-dependently decreased the protein levels of p300/CBP(transcriptional cofactors and HATs)and p-Smad2/3 expression in the nucleus,thus impeding tumor cell proliferation and metastasis.Knockdown of p300 could inhibit cell metastasis,but CBP knockdown did not affect the cell mobility.It has been reported that TGF-β1 stimulated the phosphorylation of Smad2/3,which directly interact with p300/CBP in the nucleus,and upregulating HAT activity of p300.We showed that garcinol treatment dose-dependently suppressed TGF-β1-activated Smad and non-Smad pathway,inhibiting esophageal cancer cell metastasis.In a tail vein injection pulmonary metastasis mouse model,intraperitoneal administration of garcinol(20 mg/kg)or 5-FU(20 mg/kg)significantly decreased the number of lung tumor nodules and the expression levels of Ki-67,p300,and p-Smad2/3 in lung tissues.In conclusion,our study demonstrates that garcinol inhibits esophageal cancer metastasis in vitro and in vivo,which might be related to the suppression of p300 and TGF-β1 signaling pathways,suggesting the therapeutic potential of Garcinol for metastatic tumors.Jing Wang Man Wu Dan Zheng Hong Zhang Yue Lv Li Zhang Hong-sheng Tan Hua Zhou Yuan-zhi Lao Hong-xi Xu 2020Acta Pharmacologica Sinica2020,41,1:12
10The third-party regulation on food safety in China:A review显示文摘Stakeholders in the field of food safety management in China can be classified into three categories,government,food producers(farmers and enterprises),and the third-party regulatory bodies. The third-party regulation has experienced rapid development in past twenty years,and recently received considerable attention from consumers and the central government. This paper provides a review about the development,problems and future trend of the third-party regulation on food safety in China. To be specific,five forms of the third-party regulation are assessed,including media exposure,the third-party certification,regulation by consumer associations,social movements promoted by non-governmental organizations(NGOs),and regulation by industry associations. The study concludes that media and consumer associations are the major players in the third-party regulation and are highly repudiated among customers. The food certification industry has developed rapidly,but is now facing crises of confidence among consumers because of its lack of self-regulation. NGOs and industry associations still remain in the early development stages of food safety management,and therefore,are of little importance in current regulatory bodies.ZHANG Man QIAO Hui WANG Xu PU Ming-zhe YU Zhi-jun ZHENG Feng-tian 2015Journal of Integrative Agriculture2015,14,11:11
11Effects of recombinant human canstatin protein in the treatment of pancreatic cancer显示文摘AIM: To examine the effect of canstatin, a newly discovered endogenous inhibitor of angiogenesis, in the treatment of pancreatic cancer in vivo. METHODS: The canstatin cDNA fragment was synthesized and amplified from the total RNA extracted from human placenta tissues by RT-PCR. The resulting product was firstly cloned into pUCm-T vector, then into plasmid pET-22b (+) and transformed into E. coli BL21. Isopropyl-1-thio-b-Dgalactopyran-oside (IPTG) was used to induce the expression of canstatin protein and affinity chromatography was used to purify the protein. To determine the activity of purified recombinant human canstatin (rhCanstatin), orthotopic xenograft human pancreatic cancer models were established. Human pancreatic cancer cells (SW1990) were injected into the pancreas of BALB/c nude mice. Twenty-four nude mice with orthotopic xenograft tumor were randomly divided into 3 groups 10 d after the inoculation, and were treated with PBS 0.3 mL, or canstatin 5 mg/kg, or 10 mg/kg per day for 3 wk intraperitoneally. When the experiment was over, all tumors were resected and the effects of rhCanstatin on tumor growth, microvessel density (MVD) were analyzed. RESULTS: After IPTG induction, SDS-PAGE showed a new monomeric 24 kDa protein band. This protein was purified through affinity chromatography and refolded through dialysis with a final concentration of 60 mg/L. In orthotopic pancreatic cancer models, the final tumor volume in groups treated with PBS, canstatin 5 mg/ kg, 10 mg/kg were 355.21 ± 39.54 mm3, 112.73 ±10.47 mm3, and 61.75 ± 6.99 mm3 respectively. The immunohistochemical examination showed that the MVD in tumors treated with canstatin was significantly less than that in other group. CONCLUSION: These findings demonstrate that the rhCanstatin effectively retards the growth of pancreatic cancer in a dose-dependent manner through inhibiting angiogenesis and may be a promising therapeutic agent for pancreatic cancer treatment in the clinic.Xiao-Ping He Zhao-Shen Li Ren-Min Zhu Zhen-Xing Tu Jun Gao Xue Pan Yan-Fang Gong Jing Jin Xiao-Hua Man Hong-Yu Wu Ai-Fang Xu 2006World Journal of Gastroenterology2006,12,41:10
12Tom70 serves as a molecular switch to determine pathological cardiac hypertrophy显示文摘病理学的心脏的肥大是心失败的不可避免的 forerunner。不管心脏的肥大的病原学, cardiomyocyte mitochondrial 改变总是在这上下文被观察。mitochondrial 先锋蛋白质的进口调节在 pathophysiological 下面维持 mitochondrial 功能的外部膜(汤姆) 建筑群管理的 mitochondrial 的 translocases;然而,它在病理学的心脏的肥大的发展的角色仍然保持不清楚。这里,我们证明 Tom70 是在从人和试验性的动物的病理学的 hypertrophic 心的 downregulated。在 Tom70 表示的减小在 vivo 并且在 vitro 生产了不同病理学的 cardiomyocyte 肥大。指向 Tom70 的眼的 atrophy-1 的有缺点的 mitochondrial 进口触发了细胞内部的氧化应力,它导致了病理学的细胞的回答。重要地,如果有到多样的 pro-hypertrophic 的完整的抵抗的 cardiomyocytes 侮辱,增加了 Tom70 层次。一起,这些结果表明 Tom70 充当安排 hypertrophic 压力和 mitochondrial 回答决定病理学的心脏的肥大的一个分子的开关。Jun Li Man Qi Changming Li Dan Shi Dasheng Zhang Duanyang Xie Tianyou Yuan Jing Feng Yi Liu Dandan Liang Xinran Xu Jinjin Chen Liang Xu Hong Zhang Jiangchuan Ye Fei LV Jian Huang Luying Peng Yi-Han Chen 2014Cell Research2014,24,8:9
13Evolution of blood lipids and risk factors of dyslipidemia among people living with human immunodeficiency virus who had received first-line antiretroviral regimens for 3 years in Shenzhen显示文摘Background:Lipid abnormalities are prevalent among people living with human immunodeficiency virus(HIV)(PLWH)and contribute to increasing risk of cardiovascular events.This study aims to investigate the incidence of dyslipidemia and its risk factors in PLWH after receiving different first-line free antiretroviral regimens.Methods:PLWH who sought care at the Third People’s Hospital of Shenzhen from January 2014 to December 2018 were included,and the baseline characteristics and clinical data during the follow-up were collected,including total cholesterol(TC),triglyceride(TG),low-density lipoprotein cholesterol(LDL-C)and high-density lipoprotein cholesterol(HDL-C).The risk factors of dyslipidemia after antiretroviral therapy were analyzed with the generalized estimating equation model.Results:Among the 7623 PLWH included,the mean levels of TC,HDL-C and LDL-C were 4.23±0.85 mmol/L,1.27±0.29 mmol/L and 2.54±0.65 mmol/L,respectively,and the median TG was 1.17(IQR:0.85-1.68)mmol/L.Compared with that in PLWH receiving tenofovir disoproxil fumarate(TDF)+lamivudine(3TC)+ritonavir-boosted lopinavir(LPV/r),zidovudine(AZT)+3TC+efavirenz(EFV),and AZT+3TC+LPV/r,the incidence of dyslipidemia was lower in PLWH receiving TDF+3TC+EFV.In multivariate analysis,we found that the risks of elevations of TG,TC,and LDL-C were higher with TDF+3TC+LPV/r(TG:odds ratio[OR]=2.82,95%confidence interval[CI]:2.55-3.11,P<0.001;TC:OR=1.24,95%CI:1.14-1.35,P<0.001;LDL:OR=1.06,95%CI:1.00-1.12,P=0.041),AZT+3TC+EFV(TG:OR=1.41,95%CI:1.28-1.55,P<0.001;TC:OR=1.43,95%CI:1.31-1.56,P<0.001;LDL:OR=1.18,95%CI:1.12-1.25,P<0.001),and AZT+3TC+LPV/r(TG:OR=3.08,95%CI:2.65-3.59,P<0.001;TC:OR=2.40,95%CI:1.96-2.94,P<0.001;LDL:OR=1.52,95%CI:1.37-1.69,P<0.001)than with TDF+3TC+EFV,while treatment with TDF+3TC+LPV/r was less likely to restore HDL-C levels compared with TDF+3TC+EFV(OR=0.95,95%CI:0.92-0.97,P<0.001).In addition to antiretroviral regimens,antiretroviral therapy duration,older age,overweight,obesity and other traditional factors were also important risk factors for dyslipidemia.Conclusion:The incidence of dyslipidemia varies with different antiretroviral regimens,with TDF+3TC+EFV having lower risk for dyslipidemia than the other first-line free antiretroviral regimens in China.Li-Qin Sun Jia-Ye Liu Yun He Yang Zhou Liu-Mei Xu Lu-Kun Zhang Fang Zhao Xiao-Ning Liu Ying Song Ting-Zhi Cao Yi-Mei Tian Man Rao Hui Wang 2020Chinese Medical Journal2020,,23:9
14Metformin promotes microglial cells to facilitate myelin debris clearance and accelerate nerve repairment after spinal cord injury显示文摘Spinal cord injury(SCI)is one kind of severe trauma for central nervous system.Myelin debris clearance and axon regeneration are essential for nerve regeneration after SCI.Metformin,a glucose-lowering drug,has been demonstrated to promote the locomotor functional recovery after SCI.In this study,we investigated the role and molecular mechanism of metformin on myelin preservation in a rat SCI model.SCI was induced in rats by compression at T9 level using a vascular clip.We showed that administration of metformin(50 mg·kg^(-1)·d^(-1),ip)for 28 days significantly improved locomotor function in SCI rats.Metformin also ameliorated SCI-induced neuronal apoptosis and promoted axon regeneration in the spinal cord.Using co-immunofluorescence of IBa-1 and MBP,and luxol fasting blue(LFB)staining,we demonstrated that metformin promoted the transformation of M1 to M2 phenotype polarization of microglial cells,then greatly facilitated myelin debris clearance and protected the myelin in SCI rats.Furthermore,metformin ameliorated SCI-induced blockade of autophagic flux in the spinal cord,and enhanced the fusion of autophagosome and lysosome by inhibiting the AMPK-mTOR signaling pathway.Moreover,metformin significantly attenuated inflammatory responses in the spinal cord.In LPS-treated BV2 cells,pretreatment with metformin(2 mM)significantly enhanced autophagy level,suppressed inflammation and cell apoptosis.The protective effects were blocked in the presence of an autophagy inhibitor 3-methyladenine(3-MA,5 mM),suggesting that the effect of metformin on autophagy in microglial cells is essential for the myelin preservation during nerve recovery.This study reveals a novel therapeutic effect of metformin in SCI recovery by regulating the activation of microglial cells and enhancing its autophagy level.Yan-qing Wu Jun Xiong Zi-li He Yuan Yuan Bei-ni Wang Jing-yu Xu Man Wu Su-su Zhang Shu-fang Cai Jia-xin Zhao Ke Xu Hong-yu Zhang Jian Xiao 2022Acta Pharmacologica Sinica2022,43,6:8
15Allogeneic Vγ9Vδ2 T-cell immunotherapy exhibits promising clinical safety and prolongs the survival of patients with late-stage lung or liver cancer显示文摘Vγ9Vδ2 T cells are promising candidates for cellular tumor immunotherapy.Due to their HLA-independent mode of action,allogeneic Vγ9Vδ2 T cells can be considered for clinical application.To apply allogeneic Vγ9Vδ2 T cells in adoptive immunotherapy,the methodology used to obtain adequate cell numbers with optimal effector function in vitro needs to be optimized,and clinical safety and efficacy also need to be proven.Therefore,we developed a novel formula to improve the expansion of peripheralγδT cells from healthy donors.Then,we used a humanized mouse model to validate the therapeutic efficacy of expandedγδT cells in vivo;furthermore,the expandedγδT cells were adoptively transferred into late-stage liver and lung cancer patients.We found that the expanded cells possessed significantly improved immune effector functions,including proliferation,differentiation,and cancer cell killing,both in vitro and in the humanized mouse model.Furthermore,a phase I clinical trial in 132 late-stage cancer patients with a total of 414 cell infusions unequivocally validated the clinical safety of allogeneic Vγ9Vδ2 T cells.Among these 132 patients,8 liver cancer patients and 10 lung cancer patients who received≥5 cell infusions showed greatly prolonged survival,which preliminarily verified the efficacy of allogeneic Vγ9Vδ2 T-cell therapy.Our clinical studies underscore the safety and efficacy of allogeneic Vγ9Vδ2 T-cell immunotherapy,which will inspire further clinical investigations and eventually benefit cancer patients.Yan Xu Zheng Xiang Mohammed Alnaggar Léonce Kouakanou Jiawei Li Junyi He Jiashuang Yang Yi Hu Yan Chen Li Lin Jianlei Hao Jingxia Li Jibing Chen Man Li Qingling Wu Christian Peters Qinghua Zhou Jianshuang Li Yingqing Liang Xiaohua Wang Baohui Han Meili Ma Dieter Kabelitz Kecheng Xu Wenwei Tu Yangzhe Wu Zhinan Yin 2021Cellular & Molecular Immunology2021,18,2:8
16Distribution of cagG gene in Helicobacter pylori isolates from Chinese patients with different gastroduodenal diseases and its clinical and pathological significance显示文摘AIM: To determine the distribution of cagG gene of Helicobacter pylori(Hpylori) isolates cultured from patients with various digestive diseases and its relationship with gastroduodenal diseases.METHODS: cagG was amplified by polymerase chain reaction in 145 H pylori isolates cultured from patients with chronic gastritis (n=72), duodenal ulcer (n=48), gastric ulcer (n=17), or gastric and duodenal ulcer (n=8), and the relationship between cagGstatus and the grade of gastric mucosal inflammation was determined.RESULTS: cagG was present in 91.7% of the 145 H pylori isolates, with the rates were 90.3%, 93.8%, 88.2% and 100.0%, respectively, in those from patients with chronic gastritis, duodenal ulcer, gastric ulcer, and gastric and duodenal ulcer. There was no significant difference among the four groups (P>0.05). The average grade of gastric mucosal inflammation in the antrum and corpus was 1.819±0.325and 1.768±0.312, respectively in cagG positive patients,whereas the average inflammation grade was 1.649±0.297,1.598±0.278 respectively in cagG negative cases (P>0.05).CONCLUSION: cagG gene of H pylori was quite conservative,and most H pylori strains in Chinese patients were cagG positive.cagG status was not related to clinical outcome or the degree of gastric mucosal inflammation. Therefore, cagG can notbe used as a single marker for discrimination of H pylori strains with respect to a specific digestive disease.Can Xu Zhao-Shen Li Zhen-Xing Tu Guo-Ming Xu Yan-Fang Gong Xiao-Hua Man, Department of Gastroenterology, Changhai Hospital, Second Military Medical University, Shanghai 200433, China 2003World Journal of Gastroenterology2003,9,10:8
17Zika virus infection induces RNAi-mediated antiviral immunity in human neural progenitors and brain organoids显示文摘The re-emergence of Zika virus(ZIKV)in the Western Hemisphere has resulted in global public health crisis since 2015.ZIKV preferentially infects and targets human neural progenitor cells(hNPCs)and causes fetal microcephaly upon maternal infection.hNPCs not only play critical roles during fetal brain development,but also persist in adult brain throughout life.Yet the mechanism of innate antiviral immunity in hNPCs remains largely unknown.Here,we show that ZIKV infection triggers the abundant production of virus-derived small interfering RNAs in hNPCs,but not in the more differentiated progenies or somatic cells.Ablation of key RNAi machinery components significantly enhances ZIKV replication in hNPCs.Furthermore,enoxacin,a broad-spectrum antibiotic that is known as an RNAi enhancer,exerts potent anti-ZIKV activity in hNPCs and other RNAi-competent cells.Strikingly,enoxacin treatment completely prevents ZIKV infection and circumvents ZIKV-induced microcephalic phenotypes in brain organoid models that recapitulate human fetal brain development.Our findings highlight the physiological importance of RNAi-mediated antiviral immunity during the early stage of human brain development,uncovering a novel strategy to combat human congenital viral infections through enhancing RNAi.Yan-Peng Xu Yang Qiu Boya Zhang Guilai Chen Qi Chen Miao Wang Fan Mo Jiuyue Xu Jin Wu Rong-Rong Zhang Meng-Li Cheng Na-Na Zhang Bao Lyu Wen-Liang Zhu Meng-Hua Wu Qing Ye Da Zhang Jiang-Hong Man Xiao-Feng Li Jie Cui Zhiheng Xu Baoyang Hu Xi Zhou Cheng-Feng Qin 2019Cell Research2019,29,4:8
18Research and application of a power-flow-calculation method in multiterminal VSC-HVDC power grid显示文摘For demonstrating a multiterminal voltage-source converter(VSC)-based high-voltage DC(HVDC)(VSCHVDC) project, this study puts forward a technical route for calculating the power flow in a 500-kV VSC-HVDC power grid in comparison with that of an AC power grid. The Jacobian matrix used in the power-flow calculation was deduced through methods such as Newton–Laphson iteration and Taylor series expansion. Further, the operation effect of powerflow calculation on a true bipolar VSC-HVDC power grid was analyzed briefly. The elements of the Jacobian matrix corresponding to VSC were studied under the mode of droop control and the control strategy of VSC-HVDC power grid was analyzed in detail. The power-flow calculation model for VSC-HVDC power grid of the master–slave control mode was simplified using the PQ decomposition method of the power-flow calculation of an AC power grid. Moreover, a four-terminal model of the Zhangbei VSC-HVDC demonstration project was established and tested on MATLAB. The simulation results under two kinds of operating conditions were analyzed and compared to the results of BPA; the deviation between the power-flow results was studied. The results show that the proposed calculation method can provide a feasible support for calculating the power flow in VSC-HVDC grids.Linlin Wu Xiaowei Fan Man Xu Zhendong Li Xiao Wang Xiaofei Zhang Haiwang Jin 2019Global Energy Interconnection2019,2,1:8
19kW-level,narrow-linewidth linearly polarized fiber laser with excellent beam quality through compact one-stage amplification scheme显示文摘In this manuscript, we demonstrate high-power, narrow-linewidth linearly polarized fiber laser with excellent beam quality through compact one-stage amplification scheme. By employing a single-mode–multimode–single-mode structure seed laser, a linearly polarized Yb-doped fiber laser with narrow linewidth and high output power is achieved.This laser, when used as a master oscillator, can be capable of suppressing the ASE in the process of power amplification.Thus, only one-stage amplification structure is used to scale up the laser power, and linearly polarized output with a polarization extinction ration of 14 d B, a narrow linewidth of 0.3 nm and an output power of 1018 W are achieved.Moreover, due to the good beam quality of seed laser and the well-designed amplifier stage, the beam quality of the output laser is near-diffraction-limited with M_x^2 ~1.18 and M_y^2 ~ 1.24 at the maximum power, and without mode instability occurring.Man Jiang Pengfei Ma Long Huang Jiangming Xu Pu Zhou Xijia Gu 2017High Power Laser Science and Engineering2017,5,4:7
20Garciesculenxanthone B induces PINK1-Parkin-mediated mitophagy and prevents ischemia-reperfusion brain injury in mice显示文摘Mitophagy is a selective form of autophagy involving the removal of damaged mitochondria via the autophagy-lysosome pathway.PINK1-Parkin-mediated mitophagy is one of the most important mechanisms in cardiovascular disease,cerebral ischemia-reperfusion(I/R)injury,and neurodegenerative diseases.In this study we conducted an image-based screening in YFP-Parkin HeLa cells to discover new mitophagy regulators from natural xanthone compounds.We found that garciesculenxanthone B(GeB),a new xanthone compound from Garcinia esculenta,induced the formation of YFP-Parkin puncta,a well known mitophagy marker.Furthermore,treatment with GeB dose-dependently promoted the degradation of mitochondrial proteins Tom20,Tim23,and MFN1 in YFP-Parkin HeLa cells and SH-SY5Y cells.We revealed that GeB stabilized PINK1 and triggered Parkin translocation to the impaired mitochondria to induce mitophagy,and these effects were abolished by knockdown of PINK1.Finally,in vivo experiments demonstrated that GeB partially rescued ischemia-reperfusion-induced brain injury in mice.Taken together,our findings demonstrate that the natural compound GeB can promote the PINK1-Parkin-mediated mitophagy pathway,which may be implicated in protection against I/R brain injury.Man Wu Guang Lu Yuan-zhi Lao Hong Zhang Dan Zheng Zhao-qing Zheng Juan Yi Qian Xiang Li-ming Wang Hong-sheng Tan Hua Zhou Han-ming Shen Hong-xi Xu 2021Acta Pharmacologica Sinica2021,42,2:7
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