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Norisoboldine, a natural aryl hydrocarbon receptor agonist, alleviates TNBS-induced colitis in mice, by inhibiting the activation of NLRP3 inflammasome

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Chinese Journal of Natural Medicines 2018年第3期16卷 161-174页

作者： LV Qi WANG Kai qiao si-miao DAI Yue WEI Zhi-Feng Department of Pharmacology of Chinese Materia Medica China Pharmaceutical University

Although the etiology of inflammatory bowel disease is still uncertain, increasing evidence indicates that the excessive activation of NLRP3 inflammasome plays a major role. Norisoboldine(NOR), an alkaloid isolated from Radix Linderae, has previously been demonstrated to inhibit inflammation and IL-1β production. The present study was to examine the effect of NOR on colitis and the underlying mechanism related to NLRP3 inflammasome activation. Our results showed that NOR alleviated colitis symptom in mice induced by 2, 4, 6-trinitrobenzene sulfonic acid(TNBS). Moreover, it significantly reduced expressions of cleaved IL-1β, NLRP3 and cleaved Caspase-1 but not ASC in colons of mice. In THP-1 cells, NOR suppressed the expressions of NLRP3, cleaved Caspase-1 and cleaved IL-1β but not ASC induced by lipopolysaccharide(LPS) and adenosine triphosphate(ATP). Furthermore, NOR could activate aryl hydrocarbon receptor(AhR) in THP-1 cells, inducing CYP1 A1 mR NA expression, and promoting dissociation of Ah R/HSP90 complexes, association of AhR and ARNT, Ah R nuclear translocation, XRE reporter activity and binding activity of Ah R/ARNT/XRE. Both siA hR and α-naphthoflavone(α-NF) markedly diminished the inhibition of NOR on NLRP3 inflammasome activation. In addition, NOR elevated Nrf2 level and reduced ROS level in LPS-and ATP-stimulated THP-1 cells, which was reversed by either si AhR or α-NF treatment. Finally, correlations between activation of AhR and attenuation of colitis, inhibition of NLRP3 inflammasome activation and up-regulation of Nrf2 level in colons were validated in mice with TNBS-induced colitis. Taken together, NOR ameliorated TNBS-induced colitis in mice through inhibiting NLRP3 inflammasome activation via regulating AhR/Nrf2/ROS signaling pathway.

关键词： Norisoboldine 煽动性的肠疾病 NLRP3 inflammasome 芳基烃受体

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Correlating dynamic relaxation and viscoelasticity in metallic glasses

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Science China(Physics,Mechanics & Astronomy) 2024年第5期67卷 81-90页

作者： GuangHui Xing Qi Hao Fan Zhu Yun-Jiang Wang Yong Yang Hidemi Kato Eloi Pineda si Lan JiChao qiao School of Mechanics Civil Engineering and ArchitectureNorthwestern Polytechnical UniversityXi'an 710072China State Key Laboratory of Nonlinear Mechanics Institute of MechanicsChinese Academy of SciencesBeijing 100190China School of Engineering Science University of Chinese Academy of SciencesBeijing 100049China Department of Mechanical Engineering College of EngineeringCity University of Hong KongHong Kong 999077China Department of Materials Science and Engineering College of EngineeringCity University of Hong KongHong Kong 999077China Institute for Materials Research Tohoku UniversitySendai 980-8577Japan Department of Physics Institute of Energy TechnologiesUniversitat Politècnica de CatalunyaBarceona 9Spain School of Material Science and Engineering Herbert Gleiter Institute of NanoscienceNanjing University of Science and Technology.Nanjing 210094China State Key Laboratory of Clean and Efficient Turbomachinery Power Equipment Northwestern Polytechnical UniversityXi'an 710072China

Relaxation dynamics,essential for the structural evolution of non-equilibrium systems like glassy materials,remain enigmatic.Here,we explore relaxation dynamics and viscoelastic properties in three types of metallic glasses with distinctβrelaxation behavior.In systems with significantβrelaxation,stress relaxation and creep experiments reveal a transition from two-step to one-step relaxation with rising temperature.However,such a phenomenon is absent in systems with weakerβrelaxation.We model the two-step relaxation process using a double Kohlrausch-Williams-Watts equation,and the obtained relaxation times elegantly adhere to the Arrhenius relationship.By combining fitted activation energies with theoretical analysis,we conclusively attribute these relaxation processes toβrelaxation andαrelaxation,respectively.Finally,we analyze the relaxation time spectra of two processes and establish a comprehensive picture linking dynamic relaxation with viscoelasticity.Our study provides new strategies for probing the complex relaxation behaviors of glasses from the perspective of viscoelasticity.

关键词： creep relaxation glasses

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Enhancing the Interaction of Carbon Nanotubes by Metal-Organic Decomposition with Improved Mechanical Strength and Ultra-Broadband EMI Shielding Performance

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Nano-Micro Letters 2024年第7期16卷 281-294页

作者： Yu-Ying Shi si-Yuan Liao qiao-Feng Wang Xin-Yun Xu Xiao-Yun Wang Xin-Yin Gu You-Gen Hu Peng-Li Zhu Rong Sun Yan-Jun Wan Shenzhen Institute of Advanced Electronic Materials Shenzhen Institutes of Advanced TechnologyChinese Academy of SciencesShenzhen 518055People’s Republic of China Southern University of Science and Technology Shenzhen 518055People’s Republic of China National Key Laboratory of Materials for Integrated Circuits Shanghai Institute of Microsystem and Information TechnologyChinese Academy of SciencesShanghai 200050People’s Republic of China

The remarkable properties of carbon nanotubes(CNTs)have led to promising applications in the field of electromagnetic inter-ference(EMI)shielding.However,for macroscopic CNT assemblies,such as CNT film,achieving high electrical and mechanical properties remains challenging,which heavily depends on the tube-tube interac-tions of CNTs.Herein,we develop a novel strategy based on metal-organic decomposition(MOD)to fabricate a flexible silver-carbon nanotube(Ag-CNT)film.The Ag particles are introduced in situ into the CNT film through annealing of MOD,leading to enhanced tube-tube interactions.As a result,the electrical conductivity of Ag-CNT film is up to 6.82×10^(5) S m^(-1),and the EMI shielding effectiveness of Ag-CNT film with a thickness of~7.8μm exceeds 66 dB in the ultra-broad frequency range(3-40 GHz).The tensile strength and Young’s modulus of Ag-CNT film increase from 30.09±3.14 to 76.06±6.20 MPa(~253%)and from 1.12±0.33 to 8.90±0.97 GPa(~795%),respectively.Moreover,the Ag-CNT film exhibits excellent near-field shield-ing performance,which can effectively block wireless transmission.This innovative approach provides an effective route to further apply macroscopic CNT assemblies to future portable and wearable electronic devices.

关键词： EMI shielding Mechanical strength Carbon nanotubes Metal-organic decomposition Flexibility

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Experimental quantum state compression from two identical qubits to a qutrit

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Science China(Physics,Mechanics & Astronomy) 2024年第7期67卷 1-5页

作者： qiao Xu Lin-Xiang Zhou Tian-Feng Feng Shang-Feng Qiu si-Wu Li Wu-Ji Zhang Hui Luo Xiao-Qi Zhou State Key Laboratory of Optoelectronic Materials and Technologies and School of Physics Sun Yat-sen UniversityGuangzhou 510000China Hefei National Laboratory Hefei 230088China

In the realm of modern information technology,data compression technology occupies a pivotal position.With advancements in quantum information technology,the need to compress large-scale qubits ensembles has become urgent,aiming to reduce the demand on quantum storage resources.However,existing quantum state compression schemes generally face a limitation:the particles before and after compression must reside in the same dimensional space.In specific scenarios,compressing qubits into particles of higher dimensions not only enhances the efficiency of quantum state compression but also further reduces the usage of quantum storage resources.Here we experimentally demonstrated a quantum state compression between particles of different dimensions,successfully compressing two qubits into a single qutrit.The average fidelity of the resulting qutrit with the ideal quantum state is 0.8835.Our study may have potential applications in future quantum information,such as increasing quantum communication bandwidth and reducing storage resource consumption in quantum computing.

关键词： quantum state compression quantum information technology optics

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Global epidemiology of mental disorder in atrial fibrillation between 1998-2021:A systematic review and meta-analysis

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World Journal of Psychiatry 2024年第1期14卷 179-193页

作者： Shuai Zhang Na Zhang Liu Liu Wang Zheng Zi-Lin Ma si-Yu qiao Ying-Li Zhao Yi-Hong Wei Gang Wu Qiu-Ting Yu Bing Deng Lin Shen Department of Cardiology LongHua Hospital Shanghai University of Traditional Chinese MedicineShanghai 200032China Department of Dermatology Yueyang Hospital of Integrated Traditional Chinese and Western MedicineShanghai University of Traditional Chinese MedicineShanghai 200437China

BACKGROUND As the burden of mental disorders among patients with atrial fibrillation(AF)increases,researchers are beginning to pay close attention to the risk and prevalence of these comorbidities.Although studies have independently analyzed the risk of comorbidity with depression and anxiety in patients with AF,no study has systematically focused on the global epidemiology of these two mental disorders.AIM To explore the prevalence of depression and anxiety in patients with AF.METHODS Five databases were searched from their date of establishment until January 2023.Observational studies reporting the comorbidity of AF with depression and anxiety,were included in this study.Basic information,such as the first author/publication year,study year,study type,and prevalence of depression and anxiety,were extracted.STATA SE 15.1 was used to analyze the data.Subgroup,meta-regression,and sensitivity analyses were performed to estimate study heterogeneity.RESULTS After a thorough search,26 studies were identified and included in this metaanalysis.The prevalence rates of depression and anxiety in adults with AF were 24.3%and 14.5%,respectively.Among adult males with AF,the prevalence was 11.7%and 8.7%,respectively,whereas in females it was 19.8%and 10.1%,respectively.In older adults with AF,the prevalence rates of depression and anxiety were 40.3%and 33.6%,respectively.The highest regional prevalence of depression and anxiety was observed in European(30.2%)and North American(19.8%)patients with AF.CONCLUsiON In this study,we found that the prevalence of depression and anxiety among patients with AF varies with sex,region,and evaluation scales,suggesting the need for psychological interventions for patients with AF in clinical practice.

关键词： Atrial fibrillation Depression Anxiety Prevalence

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Facile low-temperature supercritical carbonization method to prepare high-loading nickel single atom catalysts for efficient photodegradation of tetracycline

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Journal of Environmental Sciences 2024年第4期138卷 373-384页

作者： Han qiao Lirong Zheng Shiwen Hu Gang Tang Hongri Suo Chongxuan Liu School of Environment Harbin Institute of TechnologyHarbin 150090China State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control School of Environmental Science and EngineeringSouthern University of Science and TechnologyShenzhen 518055China Beijing Synchrotron Radiation Facility(BSRF) Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China

Environmental photocatalysis is a promising technology for treating antibiotics in wastewater.In this study,a supercritical carbonization method was developed to synthesize a single-atom photocatalyst with a high loading of Ni(above 5 wt.%)anchored on a carbonnitrogen-silicate substrate for the efficient photodegradation of a ubiquitous environmental contaminant of tetracycline(TC).The photocatalyst was prepared from an easily obtained metal-biopolymer-inorganic supramolecular hydrogel,followed by supercritical drying and carbonization treatment.The low-temperature(300℃)supercritical ethanol treatment prevents the excessive structural degradation of hydrogel and greatly reduces the metal clustering and aggregation,which contributed to the high Ni loading.Atomic characterizations confirmed that Ni was present at isolated sites and stabilized by Ni-N and Ni-O bonds in a Ni-(N/O)_(6)-C/siC configuration.A 5%Ni-C-si catalyst,which performed the best among the studied catalysts,exhibited a wide visible light response with a narrow bandgap of 1.45 eV that could efficiently and repeatedly catalyze the oxidation of TC with a conversion rate of almost 100% within 40 min.The reactive species trapping experiments and electron spin resonance(ESR)tests demonstrated that the h+,and·O_(2)-were mainly responsible for TC degradation.The TC degradation mechanism and possible reaction pathways were provided also.Overall,this study proposed a novel strategy to synthesize a high metal loading singleatom photocatalyst that can efficiently remove TC with high concentrations,and this strategy might be extended for synthesis of other carbon-based single-atom catalysts with valuable properties.

关键词： Carbon-based single-atom catalyst Nickel Photocatalytic degradation Tetracycline Visible light

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Neoadjuvant nivolumab with or without platinum-doublet chemotherapy based on PD-L1 expression in resectable NSCLC(CTONG1804):a multicenter open-label phase II study

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signal Transduction and Targeted Therapy 2024年第1期9卷 249-258页

作者： si-Yang Liu Song Dong Xue-Ning Yang Ri-Qiang Liao Ben-Yuan Jiang Qun Wang Xiao-Song Ben Gui-Bin qiao Jun-Tao Lin Hong-Hong Yan Li-Xu Yan Qiang Nie Hai-Yan Tu Bin-Chao Wang Jin-Ji Yang Qing Zhou Hong-Rui Li Ke Liu Wendy Wu si-Yang Maggie Liu Wen-Zhao Zhong Yi-Long Wu Guangdong Lung Cancer Institute Guangdong Provincial Key Laboratory of Translational Medicine in Lung CancerGuangdong Provincial People’s Hospital(Guangdong Academy of Medical Sciences)Southern Medical UniversityGuangzhouChina Department of Thoracic Surgery Zhongshan HospitalFudan UniversityShanghaiChina Department of Thoracic Surgery Guangdong Provincial People’s Hospital(Guangdong Academy of Medical Sciences)Southern Medical UniversityGuangzhouChina Department of Pathology Guangdong Provincial People’s Hospital(Guangdong Academy of Medical Sciences)Southern Medical UniversityGuangzhouChina Fujian Key Laboratory of Advanced Technology for Cancer Screening and Early Diagnosis FuzhouChina Berry Oncology Corporation FuzhouChina Chinese Thoracic Oncology Group(CTONG) GuangzhouChina Department of Hematology The First Affiliated HospitalJinan UniversityGuangzhouChina

This prospective multicenter phase II study evaluated the clinical efficacy of neoadjuvant nivolumab-exclusive(N)and nivolumab–chemotherapy(N/C)combinations based on PD-L1 expression.Eligible patients exhibited resectable clinical stage IIA–IIIB(AJCC 8th edition)NSCLC without EGFR/ALK alterations.Patients received either mono-nivolumab(N)or nivolumab+nabpaclitaxel+carboplatin(N/C)for three cycles based on PD-L1 expression.The primary endpoint was the major pathological response(MPR).Key secondary endpoints included the pathologic complete response(pCR),objective response rate(ORR),and event-free survival(EFS).Baseline PD-L1 expression and perioperative circulating tumor DNA(ctDNA)status were correlated with pCR and EFS.Fifty-two patients were enrolled,with 46 undergoing surgeries.The MPR was 50.0%(26/52),with 25.0%(13/52)achieving pCR,and 16.7%and 66.7%for patients with PD-L1≥50%in N and N/C groups,respectively.Thirteen(25.0%)patients experienced grade 3 or higher immune-related adverse events during neoadjuvant treatment.Patients with post-neoadjuvant ctDNA negativity was more likely to have pCR(39.1%)compared with those remained positive(6.7%,odds ratio=6.14,95%CI 0.84-Inf,p=0.077).With a median follow-up of 25.1 months,the 18-month EFS rate was 64.8%(95%CI 51.9–81.0%).For patients with ctDNA–vs.ctDNA+,the 18m-EFS rate was 93.8%vs 47.3%(HR,0.15;95%CI 0.04,0.94;p=0.005).Immunochemotherapy may serve as an optimal neoadjuvant treatment even for patients with PD-L1 expression≥50%.ctDNA negativity following neoadjuvant treatment and surgery could help identify superior pathological and survival benefits,which requires further confirmation in a prospective clinical trial(NCT04015778).

关键词： chemotherapy NSCLC treatment

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Mex-3 RNA binding family member A(MEX3A)/circMPP6 complex promotes colorectal cancer progression by inhibiting autophagy

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signal Transduction and Targeted Therapy 2024年第5期9卷 2091-2103页

作者： Ri-Xin Chen Shui-Dan Xu Min-Hua Deng Shi-Hui Hao Jie-Wei Chen Xiao-Dan Ma Wei-Tao Zhuang Jing-Hua Cao Yong-Rui Lv Jin-Long Lin si-Yu Li Gui-Bin qiao Dan Xie Feng-Wei Wang Department of Thoracic Surgery Guangdong Provincial People’s Hospital(Guangdong Academy of Medical Sciences)Southern Medical UniversityGuangzhou 510080China State Key Laboratory of Oncology in South China Guangdong Provincial Clinical Research Center for CancerSun Yat-sen University Cancer CenterGuangzhou 510060China Medical Research Institute Guangdong Provincial People’s Hospital(Guangdong Academy of Medical Sciences)Southern Medical UniversityGuangzhou 510080China Department of Pathology Sun Yat-sen University Cancer CenterGuangzhou 510060China

RNA-binding proteins(RBPs)-RNA networks have contributed to cancer development.Circular RNAs(circRNAs)are considered as protein recruiters;nevertheless,the patterns of circRNA-protein interactions in colorectal cancer(CRC)are still lacking.Processing bodies(PBs)formed through liquid-liquid phase separation(LLPS)are membrane-less organelles(MLOs)consisting of RBPs and RNA.Previous evidence suggests a connection between PBs dynamics and cancer progression.Despite the increasingly acknowledged crucial role of RBPs and RNA in the accumulation and maintenance of MLOs,there remains a lack of specific research on the interactions between PBs-related RBPs and circRNAs in CRC.Herein,we identify that MEX-3 RNA binding family member A(MEX3A),frequently upregulated in CRC tissues,predicts poorer patient survival.Elevated MEX3A accelerates malignance and inhibits autophagy of CRC cells.Importantly,MEX3A undergoes intrinsically disordered regions(IDRs)-dependent LLPS in the cytoplasm.Specifically,circMPP6 acts as a scaffold to facilitate the interaction between MEX3A and PBs proteins.The MEX3A/circMPP6 complex modulates PBs dynamic and promotes UPF-mediated phosphodiesterase 5A(PDE5A)mRNA degradation,consequently leading to the aggressive properties of CRC cells.Clinically,CRC patients exhibiting high MEX3A expression and low PDE5A expression have the poorest overall survival.Our findings reveal a collaboration between MEX3A and circMPP6 in the regulation of mRNA decay through triggering the PBs aggregation,which provides prognostic markers and/or therapeutic targets for CRC.

关键词： colorectal inhibiting MPP

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Impact of Initial Soil Conditions on Soil Hydrothermal and Surface Energy Fluxes in the Permafrost Region of the Tibetan Plateau

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Advances in Atmospheric Sciences 2024年第4期41卷 717-736页

作者： siqiong LUO Zihang CHEN Jingyuan WANG Tonghua WU Yao XIAO Yongping qiao Key Laboratory of Land Surface Process and Climate Change in Cold and Arid Regions Northwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhou 730000China University of Chinese Academy of Sciences Beijing 100049China Cryosphere Research Station on the Qinghai-Tibet Plateau State Key Laboratory of Cryospheric ScienceNorthwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhou 730000China

Accurate initial soil conditions play a crucial role in simulating soil hydrothermal and surface energy fluxes in land surface process modeling.This study emphasized the influence of the initial soil temperature(ST)and soil moisture(SM)conditions on a land surface energy and water simulation in the permafrost region in the Tibetan Plateau(TP)using the Community Land Model version 5.0(CLM5.0).The results indicate that the default initial schemes for ST and SM in CLM5.0 were simplistic,and inaccurately represented the soil characteristics of permafrost in the TP which led to underestimating ST during the freezing period while overestimating ST and underestimating SLW during the thawing period at the XDT site.Applying the long-term spin-up method to obtain initial soil conditions has only led to limited improvement in simulating soil hydrothermal and surface energy fluxes.The modified initial soil schemes proposed in this study comprehensively incorporate the characteristics of permafrost,which coexists with soil liquid water(SLW),and soil ice(si)when the ST is below freezing temperature,effectively enhancing the accuracy of the simulated soil hydrothermal and surface energy fluxes.Consequently,the modified initial soil schemes greatly improved upon the results achieved through the long-term spin-up method.Three modified initial soil schemes experiments resulted in a 64%,88%,and 77%reduction in the average mean bias error(MBE)of ST,and a 13%,21%,and 19%reduction in the average root-mean-square error(RMSE)of SLW compared to the default simulation results.Also,the average MBE of net radiation was reduced by 7%,22%,and 21%.

关键词： initial soil conditions soil temperature soil liquid water soil ice surface energy fluxes permafrost

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聚球藻PCC7002 phoR基因的鉴定及其在磷稳态中的功能

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水生生物学报 2024年第8期48卷 1393-1401页

作者：孙巧伟冯苗苗陈思宁陈未中姜海波宁波大学海洋学院宁波315211 南方海洋科学与工程广东省实验室(珠海) 珠海519080

为探究蓝藻低磷适应机制,研究鉴定了海洋聚球藻PCC7002中可能的磷调控基因phoR(A2100),并通过生物信息学的方法对PhoR蛋白理化性质进行了分析,发现phoR基因长度为1296bp,编码431个氨基酸,PhoR蛋白由PAS、HisKA和HATPase_c三部分结构域组... 详细信息

为探究蓝藻低磷适应机制,研究鉴定了海洋聚球藻PCC7002中可能的磷调控基因phoR(A2100),并通过生物信息学的方法对PhoR蛋白理化性质进行了分析,发现phoR基因长度为1296bp,编码431个氨基酸,PhoR蛋白由PAS、HisKA和HATPase_c三部分结构域组成,在不同蓝藻物种中序列较为保守。随后通过原核表达获得了PhoR重组蛋白,并制备其鼠源多克隆抗体,检测了PhoR在聚球藻PCC7002中缺磷诱导时的表达变化,证明PhoR蛋白在磷缺乏时大量诱导表达。为探究PhoR在聚球藻PCC7002中的生理功能,通过缺失突变获得了Mut-phoR突变株,并分析了其生理表型,发现Mut-phoR突变株在磷限制条件下出现显著的生长缺陷及光合作用的损伤,证明PhoR是聚球藻PCC7002适应低磷环境不可缺少的。研究结果为深入认识蓝藻的低磷适应分子机制提供了科学基础。

关键词： phoR 原核表达基因敲除多克隆抗体制备聚球藻PCC7002

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