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Celastrol regulates the oligomeric state and chaperone activity of αB-crystallin linked with protein homeostasis in the lens

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Fundamental research 2024年第2期4卷 394-400页

作者： Huaxia Wang Qing Tian Ying Zhang Yibo xi Lidan Hu Ke Yao Jingyuan Li xiangjun Chen Eye Center of the Second Affiliated Hospital Zhejiang University School of Medicine88 Jiefang RoadHangzhou 310009China institute of Translational Medicine Zhejiang University School of Medicine268 Kaixuan RoadHangzhou 310020China. State Key Laboratory of Membrane Biology School of Life SciencesTsinghua UniversityBeijing 100084China The Children’s Hospital Zhejiang University School of MedicineNational Clinical Research Center for Child HealthHangzhou 310052China Zhejiang Province Key Laboratory of Quantum technology and Device Department of PhysicsZhejiang UniversityZheda Road 38Hangzhou 310027China

Protein misfolding and aggregation are crucial pathogenic factors for cataracts,which are the leading cause of visual impairment worldwide.α-crystallin,as a small molecular chaperone,is involved in preventing protein misfolding and maintaining lens *** chaperone activity of α-crystallin depends on its oligomeric *** previous work identified a natural compound,celastrol,which could regulate the oligomeric state of α*** this work,based on the UNcle and SEC analysis,we found that celastrol induced𝛼αB-crystallin to form large *** oligomer formation enhanced the chaperone activity of αB-crystallin and prevented aggregation of the cataract-causing mutant α*** interactions between𝛼αB-crystallin and celastrol were detected by the FRET(Fluorescence Resonance Energy Transfer)technique,and verified by molecular *** least 9 binding patterns were recognized,and some binding sites covered the groove structure of α***,αB-R120G,a cataract-causing mutation located at the groove structure,and celastrol can decrease the aggregates of α***,our results suggested celastrol not only promoted the formation of large αB-crystallin oligomers,which enhanced its chaperone activity,but also bound to the groove structure of its α-crystallin domain to maintain its structural *** might serve as a chemical and pharmacological chaperone for cataract treatment.

关键词： αB-crystallin Celastrol Interactions Oligomeric state Chaperone activity Structural stability

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Unleashing the Power of Bio-based Thermotropic Liquid Crystal Modifiers:Toughening and Reinforcing Petroleum-based Epoxy Resin without Compromising Other Properties

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Chinese Journal of Polymer Science 2024年第8期42卷 1093-1102页

作者： Qing-Yun Lu Hong-Wei Gu Jia-Hui Li Qian-Qian Fan Bei-Tao Liu Yan Kou xi-Gao Jian Zhi-Huan Weng State Key Laboratory of Fine Chemicals Frontiers Science Center for Smart MaterialsLiaoning Technology Innovation Center of High Performance Resin MaterialsDepartment of Polymer Science&EngineeringDalian University of TechnologyDalian 116024China Thermochemistry Laboratory Liaoning Province Key Laboratory of Thermochemistry for Energy and MaterialsDalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China

Toughening the petroleum-based epoxy resin blends with bio-based modifiers without compromising their modulus,mechanical strength,and other properties is still a big challenge in view of the *** this study,a bio-based liquid crystal epoxy resin(THMT-E P)with an s-triazine ring structure was utilized to modify a petroleum-based bisphenol A epoxy resin(E51)with 4,4'-diaminodiphenylsulfone(DDS)as a curing agent,and the blended systems were evaluated for their thermal stability,mechanical properties,and flame *** results showed that the impact strength of the blended system initially increased and then decreased with the increase in THMT-EP content,and it reached the a maximum value of 26.5 kJ/m^(2)when the THMT-EP content was 5%,which was 31.2%higher than that of E51/***,the flexural strength,modulus,and glass transition tem perature of the blended system were all simultaneously improved with the addition of *** the same time,the addition of THMT-EP enhanced the flame retardancy of the system by increasing the char yield at 700℃and decreasing the peak heat release rate and total heat release *** work paves the way for a more sustainable improvement in the comprehensive performance of epoxy resin.

关键词： Epoxy resin Toughening Bio-based Thermotropic liquid crystal

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Epigenetic regulation of SARS-Cov-2 spike protein modulates cellular viability and nascent RNA transcription in neuronal cells

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Genes & Diseases 2024年第2期11卷 535-538页

作者： xi Kong Peng Lu Jinyue Zhang Zheng Bao Chenghao Kuang Bingqing xie Jianhua Peng Ning Ma Yong Jiang Shigang Yin Laboratory of Neurological Diseases and Brain Function The Affiliated Hospital of Southwest Medical UniversityLuzhouSichuan 646000China institute of Epigenetics and Brain Science Southwest Medical UniversityLuzhouSichuan 646000China department of Neurosurgery The Affiliated Hospital of Southwest Medical UniversityLuzhouSichuan 646000China Inflammation and Allergic Diseases research Unit The Affiliated Hospital of Southwest Medical UniversityLuzhouSichuan 646000China

SARS-CoV-2 has been demonstrated to be highly susceptible to neuron-and glial-like cells,1 but there is no consensus regarding how the virus affects neurons following *** is therefore unknown if and how SARS-CoV-2 maintains the homeostasis of neuronal ***,we revealed that the receptor-binding domain(RBD)of the SARS-CoV-2 spike protein acted as an extracellular remodeling component to undermine epigenetic regulation,perturbnascentRNA(nsRNA)transcription,promote mitochondrial biogenesis,and increase cellular viability in SH-SY5Y cells.

关键词： invasion homeostasis maintain

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Suppression of ITPKB degradation by Trim25 confers TMZ resistance in glioblastoma through ROS homeostasis

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Signal Transduction and Targeted Therapy 2024年第4期9卷 1637-1650页

作者： Yuanliang Yan Shangjun Zhou xi Chen Qiaoli Yi Songshan Feng Zijin Zhao Yuanhong Liu Qiuju Liang Zhijie Xu Zhi Li Lunquan Sun department of Pharmacy Xiangya HospitalCentral South UniversityChangsha 410008China department of Neurosurgery Xiangya HospitalCentral South UniversityChangsha 410008China department of Pathology Xiangya HospitalCentral South UniversityChangsha 410008China xiangya Cancer Center Xiangya HospitalCentral South UniversityChangsha 410008China Key Laboratory of Molecular Radiation Oncology Hunan Province Changsha 410008China institute of Cancer research National Clinical Research Center for Geriatric Disorders(Xiangya)Xiangya HospitalCentral South UniversityChangsha 410008China

Temozolomide(TMZ)represents a standard-of-care chemotherapeutic agent in glioblastoma(GBM).However,the development of drug resistance constitutes a significant hurdle in the treatment of malignant *** specific innovative approaches,such as immunotherapy,have shown favorable clinical outcomes,the inherent invasiveness of most gliomas continues to make them challenging to ***,there is an urgent need to identify effective therapeutic targets for gliomas to overcome chemoresistance and facilitate drug *** investigation used mass spectrometry to examine the proteomic profiles of six pairs of GBM patients who underwent standard-of-care treatment and surgery for both primary and recurrent tumors.A total of 648 proteins exhibiting significant differential expression were *** Set Enrichment Analysis(GSEA)unveiled notable alterations in pathways related to METABOLISM_OF_LIPIDS and BIOLOGICAL_OxiDATIONS between the primary and recurrent *** through glioma tissue arrays and the xiangya cohort confirmed substantial upregulation of inositol 1,4,5-triphosphate(IP3)kinase B(ITPKB)in the recurrence group,correlating with poor survival in glioma *** TMZ-resistant cells,the depletion of ITPKB led to an increase in reactive oxygen species(ROS)related to NADPH oxidase(NOX)activity and restored cell sensitivity to ***,the decreased phosphorylation of the E3 ligase Trim25 at the S100 position in recurrent GBM samples accounted for the weakened ITPKB ***,in turn,elevated ITPKB stability and impaired ROS ***,ITPKB depletion or the ITPKB inhibitor GNF362 effectively overcome TMZ chemoresistance in a glioma xenograft mouse *** findings reveal a novel mechanism underlying TMZ resistance and propose ITPKB as a promising therapeutic target forTMZ-resistant GBM.

关键词： TMZ homeostasis impaired

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Latest insights into the global epidemiological features,screening,early diagnosis and prognosis prediction of esophageal squamous cell carcinoma

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World Journal of Gastroenterology 2024年第20期30卷 2638-2656页

作者： Yi-xin Zhao He-Ping Zhao Meng-Yao Zhao Yan Yu xi Qi Ji-Han Wang Jing Lv department of Clinical Laboratory Honghui HospitalXi’an Jiaotong UniversityXi’an 710054Shaanxi ProvinceChina institute of Medical research Northwestern Polytechnical UniversityXi’an 710072Shaanxi ProvinceChina

As a highly invasive carcinoma,esophageal cancer(EC)was the eighth most prevalent malignancy and the sixth leading cause of cancer-related death worldwide in *** squamous cell carcinoma(ESCC)is the major histological subtype of EC,and its incidence and mortality rates are decreasing *** to the lack of specific early symptoms,ESCC patients are usually diagnosed with advanced-stage disease with a poor prognosis,and the incidence and mortality rates are still high in many countries,especially in ***,enormous challenges still exist in the management of ESCC,and novel strategies are urgently needed to further decrease the incidence and mortality rates of *** the key molecular mechanisms underlying ESCC pathogenesis have not been fully elucidated,certain promising biomarkers are being investigated to facilitate clinical *** the advent and advancement of highthroughput technologies,such as genomics,proteomics and metabolomics,valuable biomarkers with high sensitivity,specificity and stability could be identified for ***,we aimed to determine the epidemiological features of ESCC in different regions of the world,especially in china,and focused on novel molecular biomarkers associated with ESCC screening,early diagnosis and prognosis prediction.

关键词： Esophageal squamous cell carcinoma Epidemiology Diagnosis Genomics Proteomics Metabolomics

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Mitigating Lattice Distortion of high‑Voltage LiCoO_(2)via Core‑Shell Structure Induced by Cationic Heterogeneous Co‑Doping for Lithium‑Ion Batteries

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Nano-Micro Letters 2024年第3期16卷 169-182页

作者： Zezhou Lin Ke Fan Tiancheng Liu Zhihang Xu Gao Chen Honglei Zhang Hao Li Xuyun Guo xi Zhang Ye Zhu Peiyu Hou Haitao Huang department of Applied Physics and research institute for Smart Energy The Hong Kong Polytechnic UniversityHong KongPeople’s Republic of China department of Applied Physics The Hong Kong Polytechnic UniversityHong KongPeople’s Republic of China institute of Nanosurface Science and Engineering Guangdong Provincial Key Laboratory of Micro/Nano Optomechatronics EngineeringShenzhen UniversityShenzhenPeople’s Republic of China School of Physics and technology University of JinanJinanShandongPeople’s Republic of China

Inactive elemental doping is commonly used to improve the structural stability of high-voltage layered transition-metal oxide ***,the one-step co-doping strategy usually results in small grain size since the low diffusivity ions such as Ti^(4+)will be concentrated on grain boundaries,which hinders the grain *** order to synthesize large single-crystal layered oxide cathodes,considering the different diffusivities of different dopant ions,we propose a simple two-step multi-element co-doping strategy to fabricate core–shell structured LiCoO_(2)(CS-LCO).In the current work,the high-diffusivity Al^(3+)/Mg^(2+)ions occupy the core of single-crystal grain while the low diffusivity Ti^(4+)ions enrich the shell *** Ti^(4+)-enriched shell layer(~12 nm)with Co/Ti substitution and stronger Ti–O bond gives rise to less oxygen ligand ***-situ XRD demonstrates the constrained contraction of c-axis lattice parameter and mitigated structural *** a high upper cut-off voltage of 4.6 V,the single-crystal CS-LCO maintains a reversible capacity of 159.8 mAh g^(−1)with a good retention of~89%after 300 cycles,and reaches a high specific capacity of 163.8 mAh g^(−1)at *** proposed strategy can be extended to other pairs of low-(Zr^(4+),Ta^(5+),and W6+,etc.)and high-diffusivity cations(Zn^(2+),Ni^(2+),and Fe^(3+),etc.)for rational design of advanced layered oxide core–shell structured cathodes for lithium-ion batteries.

关键词： Lithium-ion battery LiCoO_(2) Heterogeneous co-doping Core-shell structure high-voltage stability

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Multi-omics joint analysis revealed the metabolic profile of retroperitoneal liposarcoma

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Frontiers of Medicine 2024年第2期18卷 375-393页

作者： Fu’an xie Yujia Niu Lanlan Lian Yue Wang Aobo Zhuang Guangting Yan Yantao Ren xiaobing Chen Mengmeng xiao xi Li Zhe xi Gen Zhang Dongmei Qin Kunrong Yang Zhigang Zheng Quan Zhang xiaogang xia Peng Li Lingwei Gu Ting Wu Chenghua Luo Shu-Hai Lin Wengang Li Cancer research Center Xiang’an Hospital of Xiamen UniversitySchool of MedicineXiamen UniversityXiamen361102China State Key Laboratory of Cellular Stress Biology School of Life SciencesFaculty of Medicine and Life SciencesXiamen UniversityXiamen361102China xiamen University research Center of Retroperitoneal Tumor Committee of Oncology Society of Chinese Medical Association Xiamen UniversityXiamen361102China department of Laboratory Medicine Xiang’an Hospital of Xiamen UniversitySchool of MedicineXiamen UniversityXiamen361102China department of Retroperitoneal Tumor Surgery Peking University International HospitalBeijing102206China School of Public Health Harvard UniversityBostonMA02115USA Laboratory of Biochemistry and Molecular Biology research Department of Clinical LaboratoryFujian Medical University Cancer HospitalFuzhou350014China Surgery department Affiliated Fuzhou First Hospital of Fujian Medical UniversityFuzhou350009China National institute for Data Science in Health and Medicine Xiamen UniversityXiamen361102China department of Hepatobiliary Surgery Xiang’an Hospital of Xiamen UniversitySchool of MedicineXiamen UniversityXiamen361102China

Retroperitoneal liposarcoma(RLPS)is the main subtype of retroperitoneal soft sarcoma(RSTS)and has a poor prognosis and few treatment options,except for *** proteomic and metabolic profiles of RLPS have remained *** aim of our study was to reveal the metabolic profile of ***,we performed proteomic analysis(n=10),metabolomic analysis(n=51),and lipidomic analysis(n=50)of retroperitoneal dedifferentiated liposarcoma(RDDLPS)and retroperitoneal well-differentiated liposarcoma(RWDLPS)tissue and paired adjacent adipose tissue obtained during *** analysis mainly revealed that glycolysis,purine metabolism,pyrimidine metabolism and phospholipid formation were upregulated in both RDDLPS and RWDLPS tissue compared with the adjacent adipose tissue,whereas the tricarboxylic acid(TCA)cycle,lipid absorption and synthesis,fatty acid degradation and biosynthesis,as well as glycine,serine,and threonine metabolism were *** particular importance,the glycolytic inhibitor 2-deoxy-D-glucose and pentose phosphate pathway(PPP)inhibitor RRX-001 significantly promoted the antitumor effects of the MDM2 inhibitor RG7112 and CDK4 inhibitor *** study not only describes the metabolic profiles of RDDLPS and RWDLPS,but also offers potential therapeutic targets and strategies for RLPS.

关键词： RLPS proteomics metabolomics lipidomics metabolism

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Biomechanical analysis of an absorbable material for treating fractures of the inferior orbital wall

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International Journal of Ophthalmology(English edition) 2024年第7期17卷 1331-1336页

作者： Jin-Hai Yu Ze-xi Sang Huang Zhang Qi-Hua Xu Qin Huang Hong-Fei Liao Yao-Hua Wang School of Optometry Jiangxi Medical CollegeNanchang UniversityNanchang 330006Jiangxi ProvinceChina Jiangxi research institute of Ophthalmology and Visual Science Nanchang 330006Jiangxi ProvinceChina Jiangxi Provincial Key Laboratory for Ophthalmology Nanchang 330006Jiangxi ProvinceChina National Clinical research Center for Ocular Diseases Jiangxi Province Division Nanchang 330006Jiangxi ProvinceChina The Affiliated Eye Hospital Jiangxi Medical CollegeNanchang 330006Jiangxi ProvinceChina Jiangxi Clinical research Center for Ophthalmic Disease Nanchang 330006Jiangxi ProvinceChina

AIM:To investigate the biomechanical properties and practical application of absorbable materials in orbital fracture ***:The three-dimensional(3D)model of orbital blowout fractures was reconstructed using Mimics21.0 *** repair guide plate model for inferior orbital wall fracture was designed using 3-matic13.0 and Geomagic wrap 21.0 *** finite element model of orbital blowout fracture and absorbable repair plate was established using 3-matic13.0 and ANSYS Workbench 21.0 *** mechanical response of absorbable plates,with thicknesses of 0.6 and 1.2 mm,was modeled after their placement in the *** patients with inferior orbital wall fractures volunteered to receive single-layer and double-layer absorbable plates combined with 3D printing technology to facilitate surgical treatment of orbital wall ***:The finite element models of orbital blowout fracture and absorbable plate were successfully *** element analysis(FEA)showed that when the Young’s modulus of the absorbable plate decreases to 3.15 MPa,the repair material with a thickness of 0.6 mm was influenced by the gravitational forces of the orbital contents,resulting in a maximum total deformation of approximately 3.3 ***,when the absorbable plate was 1.2 mm thick,the overall maximum total deformation was around 0.4 *** half-year follow-up results of the clinical cases confirmed that the absorbable plate with a thickness of 1.2 mm had smaller maximum total deformation and better clinical ***:The biomechanical analysis observations in this study are largely consistent with the clinical *** use of double-layer absorbable plates in conjunction with 3D printing technology is recommended to support surgical treatment of infraorbital wall blowout fractures.

关键词： orbital blowout fracture absorbable material finite element analysis 3D printing technology

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Accelerated Sequential Deposition Reaction via Crystal Orientation Engineering for Low-Temperature,high-Efficiency Carbon-Electrode CsPbBr_(3) Solar Cells

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Energy & Environmental Materials 2024年第1期7卷 168-175页

作者： Zeyang Zhang Weidong Zhu Tianjiao Han Tianran Wang Wenming Chai Jiaduo Zhu He xi Dazheng Chen Gang Lu Peng Dong Jincheng Zhang Chunfu Zhang Yue Hao State Key Discipline Laboratory of Wide Band Gap Semiconductor technology&shaanxi Joint Key Laboratory of Graphene School of MicroelectronicsXidian UniversityXi'an 710071China Guangzhou Wide Bandgap Semiconductor Innovation Center Guangzhou institute of technologyXidian UniversityGuangzhou 510555China Qinghai Huanghe Hydropower Development CO. LTD.Xining810008China

Low-temperature,ambient processing of high-quality CsPbBr_(3)films is demanded for scalable production of efficient,low-cost carbon-electrode perovskite solar cells(PSCs).Herein,we demonstrate a crystal orientation engineering strategy of PbBr_(2)precursor film to accelerate its reaction with CsBr precursor during two-step sequential deposition of CsPbBr_(3)*** a novel strategy is proceeded by adding CsBr species into PbBr_(2)precursor,which can tailor the preferred crystal orientation of PbBr_(2)film from[020]into[031],with CsBr additive staying in the film as CsPb_(2)Br_(5)*** calculations show that the reaction energy barrier of(031)planes of PbBr_(2)with CsBr is lower about 2.28 eV than that of(O2O)***,CsPbBr_(3)films with full coverage,high purity,high crystallinity,micro-sized grains can be obtained at a low temperature of 150℃.Carbon-electrode PSCs with these desired CsPbBr_(3)films yield the record-high efficiency of 10.27%coupled with excellent operation ***,the 1 cm^(2)area one with the superior efficiency of 8.00%as well as the flexible one with the champion efficiency of 8.27%and excellent mechanical bending characteristics are also achieved.

关键词： carbon-electrode perovskite solar cells crystal orientation engineering CsPbBr_(3) low temperature two-step sequential deposition

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Roles of concentration-dependent Cu doping behaviors on the thermoelectric properties of n-type Mg_(3)Sb_(1.5)Bi_(0.5)

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Journal of Materiomics 2024年第1期10卷 154-162页

作者： xinxin Yang Heng Ni xiaotong Yu Biao Cao Juanjuan xing Qiyong Chen Lili xi Jiandang Liu Jiye Zhang Kai Guo Jing-Tai Zhao School of Materials Science and Engineering Shanghai University99 Shangda RoadShanghai200444China Materials Genome institute Shanghai University99 Shangda RoadShanghai200444China State Key Laboratory of Particle Detection and Electronics University of Science and Technology of ChinaHefeiAnhui230026China School of Physics and Materials Science Guangzhou UniversityGuangzhou510006China research Center for Advanced Information Materials(CAIM) Huangpu Research&Graduate School of Guangzhou UniversitySino-Singapore Guangzhou Knowledge CityHuangpu DistrictGuangzhou510555China Key Lab of Si-based Information Materials&Devices and Integrated Circuits Design Department of Education of Guangdong ProvinceChina School of Materials Science and Engineering Guilin University of Electronic TechnologyGuilin541004China Guangxi Key Laboratory of Information Materials Guilin University of Electronic TechnologyGuilin541004China

Large Seebeck coefficients induced by high degeneracy of conduction band minimum,and low intrinsic lattice thermal conductivity originated from large lattice vibrational anharmonicity render Mg_(3)Sb_(2)as a promising n-type thermoelectric ***,we demonstrated unique concentration-dependent occupation behaviors of Cu in Mg_(3.4)Sb_(1.5)Bi_(0.49)Te_(0.01)matrix,evidenced by structural characterization and transport property *** is found that Cu atoms prefer to enter the interstitial lattice sites in Mg_(3)Sb_(2)host with low doping level(Mg_(3.4)Sb_(1.5)Bi_(0.49)Te_(0.01)+x%Cu,x2.3×10^(4)S/m at 300 K,increasing by 300%compared with that of the pristine *** figure of merit zT values in the whole measured temperature range are significantly improved by the synergetic improvement of power factor and reduction of thermal *** average zT∼1.07 from 323 K to 773 K has been achieved for the Mg_(3.4)Sb_(1.5)Bi_(0.49)Te_(0.01)+0.3%Cu sample,which is about 30%higher than that of the Mg_(3.4)Sb_(1.5)Bi_(0.49)Te_(0.01) sample.

关键词： Mg_(3)Sb_(2) Cu doping Concentration-dependent occupation Thermoelectric properties Average zT

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