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Depletion of squalene epoxidase in synergy with glutathione peroxidase 4 inhibitor RSl3 overcomes oxidative stress resistance in lung squamous cell carcinoma

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Precision Clinical Medicine 2024年第2期7卷 109-121页

作者： Guo li lu Chen Hua Bai li Zhang Jie Wang Weimin li CAMS key laboratory of Translational Research on lung Cancer State Key Laboratory of Molecular OncologyDepartment of Medical OncologyNational Cancer Center/National Clinical Research Center for Cancer/Cancer HospitalChinese Academy of Medical Sciences Peking Union Medical CollegeBeijing 100021China Department of Pulmonary and Critical Care Medicine West China HospitalSichuan UniversityChengdu 610041China Institute of Respiratory Health Frontiers Science Center for Disease-related Molecular NetworkWest China HospitalSichuan UniversityChengdu 610041China Precision Medicine Center Precision Medicine Key Laboratory of Sichuan ProvinceWest China HospitalSichuan UniversityChengdu 610041China State key laboratory of Respiratory Health and Multimorbidity West China HospitalChengdu 610041China The Research Units of West China Chinese Academy of Medical SciencesWest China HospitalChengdu 610041China

Background:lung squamous cell carcinoma(lusc)lacks effective targeted therapies and has a poor *** of squalene epoxidase(SQlE)has been implicated in metabolic disorders and ***,the role of SQlE as a monooxygenase involved in ***:We analyzed the expression and prognosis of lung adenocarcinoma(lUAD)and lUSC samples from GEO and TCGA *** proliferative activity of the tumors after intervention of SQlE was verified by cell and animal ***-1 assay,flow cytometry,and Western blot were used to show changes in apoptosis after intervention of *** cytometry and fluorescence assay of ROs levels were used to indicate oxidative stress ***:We investigated the unique role of SQlE expression in the diagnosis and prognosis prediction of *** of SQlE or treatment with the SQlE inhibitor terbinafine can suppress the proliferation of lUsC cells by inducing apoptosis and reactive oxygen species ***,depletion of SQlE also results in the impairment of lipid peroxidation and ferroptosis resistance such as upregulation of glutathione peroxidase ***,prevention of SQlE in synergy with glutathione peroxidase 4 inhibitor RSl3 effectively mitigates the proliferation and growth of ***:Our study indicates that the low expression of sQlE employs adaptive survival through regulating the balance of apoptosis and ferroptosis *** future,the combinational therapy of targeting sQlE and ferroptosis could be a promising approach in treating lUSC.

关键词： lung squamous cell carcinoma squalene epoxidase terbinafine RoS ferroptosis

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Yemazhui(Herba Eupatorii lindleyani)ameliorates lipopolysaccharide-induced acute lung injury via modulation of the toll-like receptor 4/nuclear factor kappa-B/nod-like receptor family pyrin domain-containing 3 protein signaling pathway and intestinal flor

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Journal of Traditional Chinese Medicine 2024年第2期44卷 303-314页

作者： REN li HAI Yang YANG Xue lUO Xianqin Chongqing key laboratory of Traditional Chinese Medicine for Prevention and Cure of Metabolic Diseases College of Traditional Chinese MedicineChongqing Medical UniversityChongqing 400016China College of Basic Medicine Chongqing Medical UniversityChongqing 400016China

OBJECTIVE:To investigate the impact of Yemazhui(Herba Eupatorii lindleyani,HEl)against lipopolysaccharide(lPS)-induced acute lung injury(Ali)and explore its underlying mechanism in ***:The chemical constituents of HEl were analyzed by ultra-high performance liquid chromatographyquadrupole time-of-flight mass spectrometry ***,HEl was found to suppress lPS-induced Ali in ***-week-old male Sprague-Dawley rats were randomly divided into 6 groups:control,lPS,Dexamethasone(Dex),HEl low dose 6 g/kg(HEl-l),HEl medium dose 18 g/kg(HEl-M)and HEl high dose 54 g/kg(HEl-H)*** model rats were intratracheally injected with 3 mg/kg lPS to establish an Ali *** counts,lung wet/dry weight ratio,as well as myeloperoxidase(MPO)activity were determined followed by the detection with hematoxylin and eosin staining,enzyme linked immunosorbent assay,quantitative real time polymerase chain reaction,western blotting,immunohistochemistry,and ***,to explore the effect of HEl on Ali-mediated intestinal flora,we performed 16s rRNA sequencing analysis of intestinal ***:HEl attenuated lPS-induced inflammation in lung tissue and intestinal flora *** study indicated that HEl suppressed the lung coefficient and wet/dry weight ratio of lPS-induced Ali in rats,inhibited leukocytes exudation and MPO activity,and improved the pathological injury of lung *** addition,HEl reduced the expression of tumor necrosis factoralpha,interleukin-1beta(Il-1β)and interleukin-6(Il-6)in bronchoalveolar lavage fluid and serum,and inhibited nuclear displacement of nuclear factor kappa-B p65(NF-κBp65).And 18 g/kg HEl also reduced the expression levels of toll-like receptor 4(TlR4),myeloid differentiation factor 88,NF-κBp65,phosphorylated inhibitor kappa B alpha(phospho-IκBα),nod-like receptor family pyrin domain-containing 3 protein(NlRP3),Il-1β,and interleukin-18(Il-18)in lung tissue,and regulated intestinal flora disturban

关键词： Yemazhui(Herba Eupatorii lindleyani) acute lung injury anti-inflammation toll-like receptor 4 nuclear factor kappa-B nod-like receptor family pyrin domain-containing 3 protein signal transduction gastrointestinal microbiome

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A Denoiser for Correlated Noise Channel Decoding: Gated-Neural Network

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China Communications 2024年第2期21卷 122-128页

作者： Xiao li ling Zhao Zhen Dai Yonggang lei School of Electronic and Information Engineering Beihang UniversityBeijing 100191China Beijing Institute of Tracking and Telecommunications Technology BITTT

This letter proposes a sliced-gated-convolutional neural network with belief propagation(SGCNN-BP) architecture for decoding long codes under correlated noise. The basic idea of SGCNNBP is using Neural Networks(NN) to transform the correlated noise into white noise, setting up the optimal condition for a standard BP decoder that takes the output from the NN. A gate-controlled neuron is used to regulate information flow and an optional operation—slicing is adopted to reduce parameters and lower training complexity. Simulation results show that SGCNN-BP has much better performance(with the largest gap being 5dB improvement) than a single BP decoder and achieves a nearly 1dB improvement compared to Fully Convolutional Networks(FCN).

关键词： belief propagation channel decoding correlated noise neural network

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long way up:rethink diseases in light of phase separation and phase transition

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Protein & Cell 2024年第7期15卷 475-492页

作者： Mingrui Ding Weifan Xu Gaofeng Pei Pilong li State key laboratory of Membrane Biology&Frontier Research Center for Biological Structure School of Life SciencesTsinghua UniversityBeijing 100084China Tsinghua-Peking Center for life Sciences Beijing 100084China NuPhase Therapeutics Beijing 100083China

Biomolecular condensation, driven by multivalency, serves as a fundamental mechanism within cells, facilitating the formation of distinct compartments, including membraneless organelles that play essential roles in various cellular processes. Perturbations in the delicate equilibrium of condensation, whether resulting in gain or loss of phase separation, have robustly been associated with cellular dysfunction and physiological disorders. As ongoing research endeavors wholeheartedly embrace this newly acknowledged principle, a transformative shift is occurring in our comprehension of disease. Consequently, significant strides have been made in unraveling the profound relevance and potential causal connections between abnormal phase separation and various diseases. This comprehensive review presents compelling recent evidence that highlight the intricate associations between aberrant phase separation and neurodegenerative diseases, cancers, and infectious diseases. Additionally, we provide a succinct summary of current efforts and propose innovative solutions for the development of potential therapeutics to combat the pathological consequences attributed to aberrant phase separation.

关键词： multivalency compartments aberant phase separation therapeutics gain or loss of phase separation diseases

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Colorimetric Detection of Acid Phosphatase and Malathion Using NiCo_(2)O_(4)Nanosheets as Peroxidase-Mimicking Activity

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Journal of Analysis and Testing 2024年第2期8卷 170-179页

作者： Jia Chen Zerong long Yan li Hongdeng Qiu Xinjiang Uygur Autonomous Product Quality Supervision and Inspection Institute Urumqi830000China CAS key laboratory of Chemistry of Northwestern Plant Resources and key laboratory for Natural Medicine of Gansu Province Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou730000China

The establishment of a low-cost and facile approach for the assay of acid phosphatase(ACP)and its inhibitor is a research *** this paper,we successfully synthesized NiCo_(2)O_(4)nanosheets with peroxidase-mimicking activity in alkaline deep eutectic solvents(DESs)composed of NaOH and PEG-200,which can catalyze 3,3',5,5'-tetramethylbenzidine(TMB)to the oxidation state TMB(ox-TMB)in the presence of *** to l-ascorbic acid-2-phosphate can be hydrolyzed into ascorbic acid by ACP,the peroxidase-like activity of NiCo_(2)O_(4)nanosheets is ***,the addition of malathion,an inhibitor of ACP,can inhibit the activity of ACP and thus limit the production of ascorbic acid(AA).Therefore,a colorimetric approach can be established for highly sensitive and selective detection of ACP and malathion with detection limits of 0.032 U/l and 0.65 nmol/l,*** importantly,this method can be successfully applied to malathion detection in environmental samples tap water and food cucumber juice,indicating that it has potential application prospects in environmental and agricultural fields.

关键词： NiCo_(2)O_(4)nanosheets Acid phosphatase Malathion Peroxidase-mimicking activity Colorimetric

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The link between intracellular calcium signaling and exosomal PD-l1 in cancer progression and immunotherapy

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Genes & Diseases 2024年第1期11卷 321-334页

作者： Md Rakibul Alam Md Mizanur Rahman Zhiguo li Department of Toxicology and Cancer Biology College of MedicineUniversity of KentuckyLexingtonKY 40506USA Department of Medicine(Nephrology) Faculty of Medicine and DentistryUniversity of AlbertaEdmontonAlberta T6E2H7Canada

Exosomes are small membrane vesicles containing microRNA,RNA,DNA fragments,and proteins that are transferred from donor cells to recipient *** cells release exo-somes to reprogram the factors associated with the tumor microenvironment(TME)causing tu-mor metastasis and immune *** evidence revealed that cancer cell-derived exosomes carry immune inhibitory molecule program death ligand 1(PD-l1)that binds with re-ceptor program death protein 1(PD-1)and promote tumor progression by escaping immune ***,some FDA-approved monoclonal antibodies are clinicallyused for cancer treatment by blocking PD-1/PD-l1 *** notable treatment outcomes,some pa-tients show poor drug *** PD-l1 plays a vital role in lowering the treatment response,showing resistance to PD-1/PD-l1 blockage therapy through recapitulating the ef-fect of cell surface *** enhance therapeutic response,inhibition of exosomal PD-l1 is *** signaling is the central regulator of tumorigenesis and can regulate exosome biogenesis and secretion by modulating Rab GTPase family and membrane fusion ***-mune checkpoints are also connected with calcium signaling and calcium channel blockers like amlodipine,nifedipine,lercanidipine,diltiazem,and verapamil were also reported to suppress cellular PD-l1 ***,to enhance the PD-1/PD-l1 blockage therapy response,the reduction of exosomal PD-l1 secretion from cancer cells is in our therapeutic *** this review,we proposed a therapeutic strategy by targeting calcium signaling to inhibit the expression of PD-l1-containing exosome levels that could reduce the anti-PD-1/PD-l1 therapy resistance and increase the patient's drug response rate.

关键词： Calcium signaling CD8^(+)T cells Exosomal PD-l1 Exosomes biogenesis Immunosuppression Immunotherapy

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Ga(X)N/Si nanoarchitecture:An emerging semiconductor platform for sunlight-powered water splitting toward hydrogen

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Frontiers in Energy 2024年第1期18卷 56-79页

作者： Yixin li Sharif Md.SADAF Baowen ZHOU key laboratory for Power Machinery and Engineering of the Ministry of Education Research Center for Renewable Synthetic FuelSchool of Mechanical EngineeringShanghai Jiao Tong UniversityShanghai 200240China Centre Energie Matériaux et TélécommunicationsInstitut National de la Recherche Scientifique(INRS)-Universitédu Québec1650 Boulevard Lionel-BouletVarennesQuébec J3X1S2Canada

Sunlight-powered water splitting presents a promising strategy for converting intermittent and virtually unlimited solar energy into energy-dense and storable green *** the pioneering discovery by Honda and Fujishima,considerable efforts have been made in this research *** various materials developed,Ga(X)N/Si(X=In,Ge,Mg,etc.)nanoarchitecture has emerged as a disruptive semiconductor platform to split water toward hydrogen by *** paper introduces the characteristics,properties,and growth/synthesis/fabrication methods of Ga(X)N/Si nanoarchitecture,primarily focusing on explaining the suitability as an ideal platform for sunlight-powered water splitting toward green hydrogen *** addition,it exclusively summarizes the recent progress and development of Ga(X)N/Si nanoarchitecture for photocatalytic and photoelectrochemical water ***,it describes the challenges and prospects of artificial photosynthesis integrated device and system using Ga(X)N/Si nanoarchitectures for solar water splitting toward hydrogen.

关键词： Ga(X)N/Si nanoarchitecture artificial photosynthesis water splitting solar toward hydrogen

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Dynamic Control of Multiple Optical Patterns of Cholesteric liquid Crystal Microdroplets by light-Driven Molecular Motors

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CCS Chemistry 2024年第2期6卷 427-438页

作者： Jiaqin li Shuting Xie Jiahui Meng Yuying liu Qi Zhan Yang Zhang lingling Shui Guofu Zhou Ben l.Feringa Jiawen Chen SCNU-UG International Joint laboratory of Molecular Science and Displays National Center for International Research on Green OptoelectronicsSouth China Normal UniversityGuangzhou 510006 Joint laboratory of Optofluidic Technology and Systems Guangdong Provincial Key Laboratory of Nanophotonic Functional Materials and DevicesSchool of Information and Optoelectronic Science and EngineeringSouth China Normal UniversityGuangzhou 510006 Stratingh Institute for Chemistry University of Groningen9747AG Groningen

The key to high-level encryption and anti-counterfeiting techniques is the storage of multiple levels of distinct information that can be individually and precisely addressed by certain *** continues to be a formidable challenge as the concealed images or codes must be read with fast response and high resolution without cross-talk to the first layer of ***,we report a non-fluorescencebased strategy to establish responsive encryption labels taking advantage of solely tuning multiple optical patterns of cholesteric liquid crystal(ClC)microdroplets doped with light-driven molecular *** photo-triggered unidirectional rotation of the motor induced not only changes in the helical twist power value but the opposite helical orientation of the superstructure in ClCs as well,resulting in changes in both the structural color and the selective reflection of circularly polar *** designed labels,which featured highly selective addressability of dual-level distinct information,good reversibility,and viewing angle-independence,were applied to build devices for daily practical use,demonstrating great potential in anti-counterfeiting technology and provide a versatile platform for enhanced data protection and encryption of authentic information.

关键词： molecular motor chirality amplification cholesteric liquid crystal anti-counterfeiting label data encryption

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Strain Gradient Finite Element Formulation of Flexoelectricity in Ferroelectric Material Based on Phase-Field Method

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Acta Mechanica Solida Sinica 2024年第4期37卷 570-579页

作者： Shuai Wang Hengchang Su Min Yi li-Hua Shao National key laboratory of Strength and Structural Integrity Institute of Solid MechanicsSchool of Aeronautic Science and EngineeringBeihang UniversityBeijing100191People’s Republic of China State key laboratory of Mechanics and Control for Aerospace Structures and Institute for Frontier Science and key laboratory for Intelligent Nano Materials and Devices of Ministry of Education and College of Aerospace Engineering Nanjing University of Aeronautics and AstronauticsNanjing210016People’s Republic of China

Flexoelectricity is a two-way coupling effect between the strain gradient and electric field that exists in all dielectrics,regardless of point group ***,the high-order derivatives of displacements involved in the strain gradient pose challenges in solving electromechanical coupling problems incorporating the flexoelectric *** this study,we formulate a phase-field model for ferroelectric materials considering the flexoelectric effect.A four-node quadrilateral element with 20 degrees of freedom is constructed without introducing high-order shape *** microstructure evolution of domains is described by an independent order parameter,namely the spontaneous polarization governed by the time-dependent Ginzburg–landau *** model is developed based on a thermodynamic framework,in which a set of microforces is introduced to construct the constitutive relation and evolution *** the flexoelectric part of electric enthalpy,the strain gradient is determined by interpolating the mechanical strain at the node via the values of Gaussian integration points in the isoparametric *** model is shown to be capable of reproducing the classic analytical solution of dielectric materials incorporating the flexoelectric *** model is verified by duplicating some typical phenomena in flexoelectricity in cylindrical tubes and truncated pyramids.A comparison is made between the polarization distribution in dielectrics and *** model can reproduce the solution to the boundary value problem of the cylindrical flexoelectric tube,and demonstrate domain twisting at domain walls in ferroelectrics considering the flexoelectric effect.

关键词： Flexoelectricity Phase-field method Ferroelectrics Domain configuration

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Aptamer-Based Antibiotic Electrochemical Detection Platform Using Portable Plastic Gold Electrode and Multichannel Chip

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Chinese Journal of Chemistry 2024年第2期42卷 171-176页

作者： Yin Bao kaiwei Cai Yichen liu Bingling li Changchun Institute of Applied Chemistry Chinese Academy of SciencesChangchunJilin 130022China School of Applied Chemistry and Engineering University of Science and Technology of ChinaHefeiAnhui 230026China

The development of accurate,rapid and practical electrochemical sensing technology for antibiotic detection has an important application prospect in many fields such as food safety,environmental monitoring,medical and health *** this research,kanamycin specific DNA aptamer and its partially complementary short chain were self-assembled onto the surface of an integrated portable plastic gold electrode(PGE)by Au-s bond,and a simple kanamycin electrochemical biosensor interface was *** the same time,the epoxy resin channel layer was designed,and the auxiliary instrument was set up independently in the laboratory,which could help to measure and analyze eight groups of samples automatically in *** quantitative analysis results showed that in 20 min,the sensor had a good linear relationship between the peak current change of square wave voltammetry and the negative logarithm of kanamycin concentration when kanamycin concentration was in the range of 1-10o0μmol/l,and the detection limit could reach 0.40μmol/*** addition,the discrimination could be achieved within 5 min in the real-time analysis *** sensor had a simple construction method,good selectivity and stability,and could be used for rapid or real-time detection of kanamycin residues in actual water samples,which provided a new direction for the practical detection of kanamycin in environmental watersamples.

关键词： Biosensor Aptamer Antibiotics Electroanalysis DNA

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