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Src inhibition rescues FUNDC1-mediated neuronal mitophagy in ischaemic stroke

Stroke & Vascular Neurology 2024年第4期9卷 367-379,I0022-I0031页

作者： Tianchi Tang Li-bin hu Chao Ding Zhihua Zhang Ning wang Tingting wang Hang Zhou Siqi Xia Linfeng Fan Xiong-jie Fu Feng Yan Xiangnan Zhang Gao chen Jianru Li department of Neurosurgery Zhejiang University School of Medicine Second Affiliated HospitalHangzhouZhejiangChina 2NeurosurgeryZhejiang University School of Medicine Second Affiliated HospitalHangzhouZhejiangChina 3Zhejiang University School of MedicineHangzhouZhejiangChina 4Zhejiang University Department of PharmacologyHangzhouZhejiangChina

Background Ischaemic stroke triggers neuronal mitophagy,while the involvement of mitophagy receptors in ischaemia/reperfusion(I/R)injury-induced neuronal mitophagy remain not fully ***,we aimed to investigate the involvement of mitophagy receptor FUN14 domain-containing 1(FUNDC1)and its modulation in neuronal mitophagy induced by I/R *** Wild-type and FUNDC1 knockout mice were generated to establish models of neuronal I/R injury,including transient middle cerebral artery occlusion(tMCAO)in vivo and oxygen glucose deprivation/reperfusion in *** outcomes of mice with two genotypes were *** mitophagy was analysed both in vivo and in *** of FUNDC1 and its regulator Src were *** impact of Src on FUNDC1-mediated mitophagy was assessed through administration of Src antagonist *** To our surprise,FUNDC1 knockout mice subjected to tMCAO showed stroke outcomes comparable to those of their wild-type *** neuronal mitophagy could be activated by I/R injury,FUNDC1 deletion did not disrupt neuronal *** activation of FUNDC1,represented by dephosphorylation of Tyr18,was detected in the early stages(within 3hours)of neuronal I/R injury;however,phosphorylated Tyr18 reappeared and even surpassed baseline levels in later stages(after 6hours),accompanied by a decrease in FUNDC1-light chain 3 *** inactivation of FUNDC1 was associated with Src activation,represented by phosphorylation of Tyr416,which changed in parallel with the level of phosphorylated FUNDC1(Tyr18)during neuronal I/R ***,FUNDC1-mediated mitophagy in neurons under I/R conditions can be rescued by pharmacological inhibition of *** FUNDC1 is inactivated by Src during the later stage(after 6hours)of neuronal I/R injury,and rescue of FUNDC1-mediated mitophagy may serve as a potential therapeutic strategy for treating ischaemic stroke.

关键词： FUNDC1 involvement injury

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Highly Sensitive Ammonia Gas Sensors at Room Temperature Based on the Catalytic Mechanism of N,C Coordinated Ni Single-Atom Active Center

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Nano-Micro Letters 2024年第12期16卷 515-531页

作者： Wenjing Quan Jia Shi Min Zeng Wen Lv Xiyu chen Chao Fan Yongwei Zhang Zhou Liu Xiaolu huang Jianhua Yang Nantao hu Tao wang Zhi Yang National Key Laboratory of Advanced Micro and Nano Manufacture Technology Shanghai Jiao Tong UniversityShanghai 200240People’s Republic of China department of Micro/Nano Electronics School of Electronic Information and Electrical EngineeringShanghai Jiao Tong UniversityShanghai 200240People’s Republic of China Shanghai Key Laboratory of Intelligent Sensing and Detection Technology School of Mechanical and Power EngineeringEast China University of Science and TechnologyShanghai 200237People’s Republic of China

Significant challenges are posed by the limitations of gas sensing mechanisms for trace-level detection of ammonia(NH3).In this study,we propose to exploit single-atom catalytic activation and targeted adsorption properties to achieve highly sensitive and selective NH3 gas ***,Ni singleatom active sites based on N,C coordination(Ni-N-C)were interfacially confined on the surface of two-dimensional(2D)MXene nanosheets(Ni-N-C/Ti_(3)C_(2)Tx),and a fully flexible gas sensor(MNPE-Ni-N-C/Ti_(3)C_(2)Tx)was *** sensor demonstrates a remarkable response value to 5 ppm NH3(27.3%),excellent selectivity for NH3,and a low theoretical detection limit of 12.1 *** analysis by density functional calculation reveals that the Ni single-atom center with N,C coordination exhibits specific targeted adsorption properties for ***,its catalytic activation effect effectively reduces the Gibbs free energy of the sensing elemental reaction,while its electronic structure promotes the spill-over effect of reactive oxygen species at the gas-solid *** sensor has a dual-channel sensing mechanism of both chemical and electronic sensitization,which facilitates efficient electron transfer to the 2D MXene conductive network,resulting in the formation of the NH3 gas molecule sensing ***,the passivation of MXene edge defects by a conjugated hydrogen bond network enhances the long-term stability of MXene-based electrodes under high humidity *** work achieves highly sensitive room-temperature NH3 gas detection based on the catalytic mechanism of Ni single-atom active center with N,C coordination,which provides a novel gas sensing mechanism for room-temperature trace gas detection research.

关键词： Gas sensor Single atom Catalytic activation Targeted adsorption End-sealing passivation

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ARHGAP4 variants are associated with X-linked early-onset temporal lobe epilepsy

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World Journal of Pediatrics 2024年第8期20卷 859-867页

作者： Yuan-Yuan hu wang Song Zhi-Gang Liu Xing-Guang Ye Hong-Wei Zhang Xin Li Jun-Xia Luo Peng-Yu wang Jie wang Xiao-Fei Lin Hong-Li Zhu Wei-Ping Liao Bin Li Xu-Qin chen department of Neurology Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of ChinaInstitute of Neuroscience and the Second Affiliated Hospital of Guangzhou Medical UniversityChang-gang-dong RoadGuangzhou510260China Epilepsy Center and Neurology department of Children’s Hospital of Soochow university Suzhou215000JiangsuChina department of pediatrics Foshan Women and Children HospitalFoshan528000China Children’s Hospital Affiliated to Shandong university Jinan250000ShandongChina Second Hospital of Shandong university Jinan250000China huai’an Maternity&Child Healthcare Hospital Huai’an223001China Institute of Neuroscience of Guangzhou Medical university and Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of china Chang-gang-dong Road 250Guangzhou510260GuangdongChina

The ARHGAP4 gene(OMIM*300,023),also known as Rho GTPase activating protein 4,encodes a protein that has an essential role in the regulation of small ***4 message RNA(mRNA)is highly expressed during the developing and adult nervous *** the protein level,ARHGAP4 is exclusively present in certain brain regions,such as the mesial temporal lobe,specifically the stratum lucidum of the CA3 region[1].ARHGAP4 enhances the GTPase activity of Rho proteins,which modulate morphological alterations in neuron development and synaptic plasticity by interacting with the actin cytoskeleton[2].

关键词： epilepsy alterations stratum

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Effect of speed humps on instantaneous traffic emissions in a microscopic model with limited deceleration capacity

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Chinese Physics B 2024年第6期33卷 413-420页

作者：胡宇晨李启朗刘军王君霞汪秉宏 School of mathematics and Physics Anhui Jianzhu UniversityHefei 230601China School of Civil Engineering and Transportation Northeast Forestry UniversityHarbin 150040China department of Modern Physics University of Science and Technology of ChinaHefei 230026China

As a common transportation facility, speed humps can control the speed of vehicles on special road sections to reduce traffic risks. At the same time, they also cause instantaneous traffic emissions. Based on the classic instantaneous traffic emission model and the limited deceleration capacity microscopic traffic flow model with slow-to-start rules, this paper has investigated the impact of speed humps on traffic flow and the instantaneous emissions of vehicle pollutants in a single lane situation. The numerical simulation results have shown that speed humps have significant effects on traffic flow and traffic emissions. In a free-flow region, the increase of speed humps leads to the continuous rise of CO_(2), NO_(X) and PM emissions. Within some density ranges, one finds that these pollutant emissions can evolve into some higher values under some random seeds. Under other random seeds, they can evolve into some lower values. In a wide moving jam region, the emission values of these pollutants sometimes appear as continuous or intermittent phenomenon. Compared to the refined Na Sch model, the present model has lower instantaneous emissions such as CO_(2), NO_(X) and PM and higher volatile organic components(VOC) emissions. Compared to the limited deceleration capacity model without slow-to-start rules, the present model also has lower instantaneous emissions such as CO_(2), NO_(X) and PM and higher VOC emissions in a wide moving jam region. These results can also be confirmed or explained by the statistical values of vehicle velocity and acceleration.

关键词： traffic emissions speed humps slow-to-start rules deceleration capacity

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The steady-state solution of dendritic growth from the undercooled binary alloy melt with the far field flow

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Science china(Technological Sciences) 2009年第8期52卷 2280-2287页

作者： chen MingWen1,2, wang ZiDong2 & XU JianJun2,3,4 1 School of Applied Sciences, university of Science and Technology Beijing, Beijing 100083, china 2 School of Materials Science and Engineering, university of Science and Technology Beijing, Beijing 100083, china 3 School of Mathematical Sciences, Nankai university, Tianjin 300071, china 4 department of mathematics and Statistics, McGill university, Montreal H3A 2K6, Canada School of Applied Sciences University of Science and Technology Beijing Beijing 100083 China School of Materials Science and Engineering University of Science and Technology Beijing Beijing 100083 China School of Mathematical Sciences Nankai University Tianjin 300071 China department of mathematics and Statistics McGill University Montreal H3A 2K6 Canada

The steady-state dendritic growth from the undercooled binary alloy melt with the far field flow is considered. By neglecting the interface energy, interface kinetics and buoyancy effects in the system, we obtaine the steady-state solution for the case of the large Schmidt number, in terms of the multiple variable expansion method. The changes of the temperature and concentration fields, the morphology of the interface, the normalization parameter and the Peclet number of the system induced by uniform external flow are derived. The results show that, compared with the system of dendritic growth from undercooled pure melt, the convective flow in the system of growth from undercooled binary alloy has stronger effects on the morphology of the interface. Nevertheless, the shape of the interface still remains nearly a paraboloid.

关键词： binary alloy melt convection dendritic growth interfaces steady-state solution multiple variable expansion method

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Recombinant human B7-H4 expressed in Escherichia coli inhibits T lym-phocyte proliferation and IL-2 secretion in vitro

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Acta Pharmacologica Sinica 2006年第6期27卷 741-746页

作者： Yi-xiang MAO~(2,3)Yong-Jing chen~2 Yan GE~2 Hong-bing MA~2 Jian-feng YU~2 Hong-ya WU~2 Yu-min hu~2 Qin wang~2 Qin SHI~2 Xue-guang ZHANG~(2,4)2 Institute of Biotechnology,Soochow university,Suzhou 215007,china 3 department of Oncology,First Affiliated Hospital to Soochow university,Suzhou 215007,china Institute of Biotechnology Soochow University

Aim:To explore the biofunctions of human B7-H4 generated from ***:The gene of human B7-H4 extracellular region（IgV-like andIgC-like domains）was obtained by PCR from human cDNA FLJ22418 and theninserted into the prokaryotic expression vector pGEX-5X-3 expressing glutathiones-transferase（GST）fusion *** being identified by restriction enzymedigestion and sequencing,the recombinant vector was transferred into host strainE coli BL21-RIL（DE3）.A 47 kDa fusion protein（GST/hB7-H4）was induced byisopropyl-beta-D-thiogalactopyranoside（IPTG）and purified by standard meth-ods reported in the prokaryotic *** inhibitory effect of GST/hBT-H4 onproliferation of T cells was observed in vitro by CD3mAb activated T-cell cultur-ing system and [3H]-thymidine incorporation *** concentrations ofinterleukin-2 and iterferon-g in the supernatants of T cells were determined ***:We successfully constructed the method for high-level expres-sion and purification of the hB7-H4 extracellular domain as GST fusion proteinfrom E *** GST/hB7-H4 fusion protein produced in bacteria had obviousbiological activity to inhibit T-lymphocyte proliferation and IL-2 ***:The prokaryote expression system could be used to generate hB7-H4 protein with natural spatial conformations and biological functions,whichprovided an efficient and economical way for the preparation of this target protein.

关键词： B7-H4 glutathione s-transferase fusion protein inhibition

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Whole-genome Sequencing Reveals Autooctoploidy in Chinese Sturgeon and Its Evolutionary Trajectories

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Genomics, Proteomics & Bioinformatics 2024年第1期22卷 51-65页

作者： Binzhong wang Bin Wu Xueqing Liu Yacheng hu Yao Ming Mingzhou Bai Juanjuan Liu Kan Xiao Qingkai Zeng Jing Yang Hongqi wang Baifu Guo Chun Tan Zixuan hu Xun Zhao Yanhong Li Zhen Yue Junpu Mei Wei Jiang Yuanjin Yang Zhiyuan Li Yong Gao Lei chen Jianbo Jian Hejun Du hubei Key Laboratory of Three Gorges Project for Conservation of Fishes Yichang 443100China Chinese Sturgeon Research Institute China Three Gorges CorporationYichang 443100China Yangtze River Biodiversity Research Center China Three Gorges CorporationWuhan 430014China BGI-Shenzhen Shenzhen 518083China BGI Genomics BGI-ShenzhenShenzhen 518083China department of Biotechnology and Biomedicine Technical University of DenmarkLyngby 2800Denmark River Basin Complex Administration Center China Three Gorges CorporationYichang 443100China BGI-Sanya BGI-ShenzhenSanya 572025China Yangtze Eco-Environment Engineering Research Center China Three Gorges CorporationBeijing 100038China

The order Acipenseriformes,which includes sturgeons and paddlefishes,represents“living fossils”with complex genomes that are good models for understanding whole-genome duplication(WGD)and ploidy evolution in ***,we sequenced and assembled the first high-quality chromosome-level genome for the complex octoploid Acipenser sinensis(Chinese sturgeon),a critically endangered species that also represents a poorly understood ploidy group in *** results show that *** is a complex autooctoploid species containing four kinds of octovalents(8n),a hexavalent(6n),two tetravalents(4n),and a divalent(2n).An analysis taking into account delayed rediploidization reveals that the octoploid genome composition of Chinese sturgeon results from two rounds of homologous WGDs,and further provides insights into the timing of its ploidy *** study provides the first octoploid genome resource of Acipenseriformes for understanding ploidy compositions and evolutionary trajectories of polyploid fishes.

关键词： Chinese sturgeon Whole-genome sequencing Autooctoploid Polyploidization and diploidization Whole-genome duplication

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Penpulimab,an anti-PD-1 antibody,for heavily pretreated metastatic nasopharyngeal carcinoma:a single-arm phase II study

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Signal Transduction and Targeted Therapy 2024年第7期9卷 3056-3062页

作者： Xiaozhong chen Wei wang Qingfeng Zou Xiaodong Zhu Qin Lin Yi Jiang Yan Sun Liangfang Shen Lin wang Guorong Zou Xiaoyan Lin Shaojun Lin Minying Li Ying wang Ruilian Xu Rui Ao Rensheng wang Haifeng Lin Shuang huang Tingting Xu Wenting Li Mengying Xia Yu Xia Zhongmin wang Baiyong Li Jingao Li Chaosu hu department of Radiation Oncology Cancer Hospital of the University of ChineseAcademy of Sciences(Zhejiang Cancer Hospital)HangzhouChina Gastroenterology and Urology department II Hunan Cancer Hospital/the Affiliated Cancer Hospital of Xiangya School of MedicineCentral South UniversityChangshaChina Clinical Research Center for Gastrointestinal Cancer in hunan Province ChangshaChina department of Medical Oncology Affiliated Cancer Hospital&Institute of Guangzhou Medical UniversityGuangzhouChina department of Radiation Oncology Guangxi Medical University Affiliated Tumor Hospital&Key Laboratory of Early Prevention and Treatment for Regional High Frequency Tumor(Guangxi Medical University)Ministry of Education&Guangxi Key Laboratory of Early Prevention and Treatment for Regional High Frequency TumorGuangxi Medical UniversityNanningChina department of Radiation Oncology Cancer CenterThe First Affiliated Hospital of Xiamen UniversityXiamenChina department of Medical Oncology Cancer Hospital of Shantou University Medical CollegeShantouChina department of Radiation Oncology Peking University Cancer Hospital&InstituteBeijingChina department of Oncology Xiangya Hospital Central South UniversityChangshaChina department of Medical Oncology Hainan General HospitalHainan Affiliated Hospital of Hainan Medical UniversityHaikouChina department of Oncology The Affiliated Panyu Central Hospital of Guangzhou Medical UniversityGuangzhouChina department of Medical Oncology Fujian Medical University Union HospitalFuzhouChina department of Radiation Oncology Clinical Oncology School of Fujian Medical UniversityFujian Cancer HospitalFuzhouChina department of Radiation Therapy for Thoracic Tumors Zhongshan City People’s HospitalZhongshanChina Tumor Radiotherapy Center Chongqing University Cancer HospitalChongqing Cancer HospitalChongqing Cancer InstituteChongqingChina department of Oncology Shenzhen People’s Hospital(The Second Clinical Medical CollegeJinan UniversityThe First Affiliated HospitalSo

Penpulimab is an anti-programmed cell death-1(PD-1)IgG1 antibody with no Fc gamma receptor(FcγR)binding activity,and thus theoretically reduced immune-related adverse events(irAEs)while maintaining *** single-arm,phase II trial conducted across 20 tertiary care centers in china enrolled adult patients with metastatic nasopharyngeal carcinoma(NPC)who had failed two or more lines of previous systemic *** received 200-mg penpulimab intravenously every 2 weeks(4 weeks per cycle)until disease progression or intolerable *** primary endpoint was objective response rate(ORR)per RECIST(version 1.1),as assessed by an independent radiological review *** secondary endpoints included progression-free survival(PFS)and overall survival(OS).One hundred thirty patients were enrolled and 125 were efficacy *** the data cutoff date(September 28,2022),1 patient achieved complete response and 34 patients attained partial *** ORR was 28.0%(95%CI 20.3–36.7%).The response was durable,with 66.8%still in response at 9 ***-three patients(26.4%)were still on *** median PFS and OS were 3.6 months(95%CI=1.9–7.3 months)and 22.8 months(95%CI=17.1 months to not reached),***(7.6%)patients experienced grade 3 or higher *** has promising anti-tumor activities and acceptable toxicities in heavily pretreated metastatic NPC patients,supporting further clinical development as third-line treatment of metastatic NPC.

关键词： metastatic nasopharyngeal supporting

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On adjacent-vertex-distinguishing total coloring of graphs

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Science china mathematics 2005年第3期48卷 289-299页

作者： ZHANG Zhongfu, chen Xiang’en, LI Jingwen, YAO Bing, LU Xinzhong & wang Jianfang College of mathematics and Information Science, Northwest Normal university, Lanzhou 730070, china department of Computer, Lanzhou Normal College, Lanzhou 730070, china Institute of Applied mathematics, Lanzhou Jiaotong university, Lanzhou 730070, china College of Information and Electrical Engineering, Lanzhou Jiaotong university, Lanzhou 730070, china Institute of Applied mathematics, Chinese Academy of Sciences, Beijing 100080, china 1. College of mathematics and Information Science Northwest Normal University 730070 Lanzhou China 2. department of Computer Lanzhou Normal College 730070 Lanzhou China 3. Institute of Applied mathematics Lanzhou Jiaotong University 730070 Lanzhou China 4. College of Information and Electrical Engineering Lanzhou Jiaotong University 730070 Lanzhou China 5. Institute of Applied mathematics Chinese Academy of Sciences 100080 Beijing China

In this paper, we present a new concept of the adjacent-vertex-distinguishing total coloring of graphs (briefly, AVDTC of graphs) and, meanwhile, have obtained the adjacent-vertex-distinguishing total chromatic number... 详细信息

关键词： graph, proper total coloring, adjacent-vertex-distinguishing total coloring, adjacent-vertex-distinguishing total chromatic number.

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The evolution and morphological stability of a spherical crystal

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Science china(Technological Sciences) 2008年第3期51卷 225-243页

作者： chen MingWen1,2, wang ZiDong2 & XU JianJun3,4 1 School of Applied Sciences, university of Science and Technology Beijing, Beijing 100083, china 2 School of Materials Science and Engineering, university of Science and Technology Beijing, Beijing 100083, china 3 School of Mathematical Sciences, Nankai university, Tianjin 300071, china 4 department of mathematics and Statistics, McGill university, Montreal H3A 2K6, Canada 1. School of Applied Sciences University of Science and Technology Beijing Beijing 100083 China 2. School of Materials Science and Engineering University of Science and Technology Beijing Beijing 100083 China 3. School of Mathematical Sciences Nankai University Tianjin 300071 China 4. department of mathematics and Statistics McGill University Montreal H3A 2K6 Canada

The growth model of a spherical crystal in the undercooled melt including the surface energy, interfacial kinetics and convective flow is established. The effect of the convective flow induced by a small far field flow on the evolution and morphological stability of the interface of the spherical crystal is studied. The interface shape of the spherical crystal, which is affected by the far field flow, and the dispersion relation of the growth rate of amplitude of the perturbed interface are derived. It is shown that the convection induced by the far field flow makes the interface of the growing spherical crystal further grow in the upstream direction of the far field flow and inhibit growth in the downstream direction; the interface of the decaying spherical crystal further decays in the upstream direction and inhibits decay in the downstream direction. The theoretical result suggests that both the growth of the sphere in the upstream direction and the decay of the sphere in the downstream direction make the spherical crystal tend to evolve into an oval; the morphological stability of the interface depends on a certain radius R c such that the spherical crystal is unstable when its radius is greater than R c and stable when its radius is less than R c . The surface energy and interfacial kinetics have strong stabilizing effects on the growth of the spherical crystal. In the meantime interfacial kinetics is a table factor of the interface when the interface of the sphere is growing; it is an unstable factor of the interface when the interface is decaying.

关键词： solid-liquid interface spherical crystal convective flow crystal growth morphological stability

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