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First-principles calculations of Mg_2X(X =Si,Ge,Sn) semiconductors with the calcium fluorite structure

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Journal of Semiconductors 2015年第5期36卷 8-13页

作者：郭三栋 department of Physics School of SciencesChina University of Mining and Technology

The electronic structures ofMg2X （X = Si, Ge, Sn） have been calculated by using generalized gradient approximation, various screened hybrid functionals, as well as Tran and Blaha＇s modified Becke and Johnson exchange potential. It was found that the Tran and Blaha＇s modified Becke and Johnson exchange potential provides a more realistic description of the electronic structures and the optical properties of MgEX （X = Si, Ge, Sn） than else exchange-correlation potential, and the theoretical gaps and dielectric functions of Mg2X （X = Si, Ge, Sn） are quite compatible with the experimental data. The elastic properties of Mg2X （X = Si, Ge, Sn） have also been studied in detail with the generalized gradient approximation, including bulk modulus, shear modulus, Young＇s modulus, Poisson＇s ratio, sound velocities, and Debye temperature. The phonon dispersions ofMg2X （X = Si, Ge, Sn） have been calculated within the generalized gradient approximation, suggesting no structural instability, and the measurable phonon heat capacity as a function of the temperature has been also calculated.

关键词： semiconductor optical properties elastic properties phonon

Phosphoester modified poly(ethylenimine) as efficient and low cytotoxic genevectors

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Science China Chemistry 2011年第2期54卷 351-358页

作者： DU JinZhi TANG LingYan YUAN YouYong WANG Jun department of Polymer Science and Engineering CAS Key Laboratory of Soft Matter Chemistry University of Science and Technology of China Hefei 230026 China Hefei National Laboratory for Physical sciences at Microscale and School of life sciences University of Science and Technology of China Hefei 230027 China

Cyclic phosphoester monomer ethyl ethylene phosphate (EEP) modified poly(ethylenimine) (PEI),denoted as PEI-EEP,was developed for gene *** PEI-EEP polymers were synthesized and their structures were characterized by 1H and 31P NMR *** the PEI-EEP polymers could condense DNA efficiently at N/P ratios higher than 0.5/*** physiochemical characteristics of PEI-EEP/DNA complexes were analyzed by particle size and zeta potential *** particle sizes of complexes were around 160–250 nm,and their zeta potentials were around 30–45 mV at the N/P ratios ranging from 10/1 to 50/*** vitro cell viability and transfection ability were evaluated in HEK293 and HeLa cells using PEI as the *** cytotoxicity of PEI-EEP and PEI-EEP/DNA complexes was lower than that of PEI and its complexes with *** transfection efficiency of PEI-EEP/DNA complexes was correlated to modification degrees with *** the modification of phosphoester to PEI was moderate,the PEI-EEP1/DNA and PEI-EEP2/DNA complexes exhibited comparable or even higher transfection ability than PEI/DNA complex at its optimal N/P ratio in the absence of ***,transfection efficiency of PEI-EEP3 reduced *** importantly,the PEI-EEP exhibited higher transfection efficiency in the presence of 10% serum than that without ***,PEI-EEP polymers may be attractive vectors for non-viral gene therapy.

关键词： gene delivery PEI phosphoester gene vector

Adsorption and Decarbonylation Reaction of Furfural on the Pd(111) and M/Pd(111)(M=Ni, Cu and Ru) Surfaces

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Chinese Journal of Structural Chemistry 2019年第2期38卷 211-223,166页

作者： XIA Sheng-Jie FANG Lei QIAN Meng-Dan MENG Yue NI Zhe-Ming Laboratory of Advanced Catalytic Materials College of Chemical Engineering Zhejiang University of Technology School of life sciences Huzhou University

By performing with density functional theory(DFT) method, the detailed adsorption process and the catalytic decarbonylation mechanisms of furfural over Pd(111) and M/Pd(111)(M = Ni, Cu, Ru) surfaces toward furan were clarified. The results of atomic size factor, formation energy and d-band center showed that Ru/Pd(111) surface was the most stable and active. The adsorption energies of furfural on the different surfaces followed the order Ru/Pd(111) > Cu/Pd(111) > Pd(111) > Ni/Pd(111). After analyzing Mulliken atomic charge population and the deformation density, we can find that on Ru/Pd(111) surface, the number of charge transfer was the most and the interaction was the strongest. Therefore, its adsorption energy was the highest. Furthermore, the furfural decarbonylation pathway is more kinetically feasible on bimetallic surface, and the reaction is the most likely to occur on Ru/Pd(111).

关键词： density functional theory furfural Pd(111) bimetallic catalyst adsorption decarbonylation mechanism

Photobiomodulation:a novel approach to promote trans-differentiation of adipose-derived stem cells into neuronal-like cells

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Neural Regeneration Research 2025年第2期20卷 598-608页

作者： Daniella Da Silva Madeleen Jansen van Rensburg Anine Crous Heidi Abrahamse Laser Research Centre Faculty of Health SciencesUniversity of JohannesburgDoornfonteinJohannesburgSouth Africa

Photobiomodulation,originally used red and near-infrared lasers,can alter cellular *** has been demonstrated that the visible spectrum at 451-540 nm does not necessarily increase cell proliferation,near-infrared light promotes adipose stem cell proliferation and affects adipose stem cell migration,which is necessary for the cells homing to the site of *** this in vitro study,we explored the potential of adipose-derived stem cells to differentiate into neurons for future translational regenerative treatments in neurodegenerative disorders and brain *** investigated the effects of various biological and chemical inducers on trans-differentiation and evaluated the impact of photobiomodulation using 825 nm near-infrared and 525 nm green laser light at 5 J/*** adipose-derived stem cells can be used in autologous grafting and photobiomodulation has been shown to have biostimulatory *** findings reveal that adipose-derived stem cells can indeed trans-differentiate into neuronal cells when exposed to inducers,with pre-induced cells exhibiting higher rates of proliferation and trans-differentiation compared with the control ***,green laser light stimulation led to notable morphological changes indicative of enhanced trans-differentiation,while near-infrared photobiomodulation notably increased the expression of neuronal *** biochemical analysis and enzyme-linked immunosorbent assays,we observed marked improvements in viability,proliferation,membrane permeability,and mitochondrial membrane potential,as well as increased protein levels of neuron-specific enolase and ciliary neurotrophic ***,our results demonstrate the efficacy of photobiomodulation in enhancing the trans-differentiation ability of adipose-derived stem cells,offering promising prospects for their use in regenerative medicine for neurodegenerative disorders and brain injuries.

关键词： differentiation inducers green photobiomodulation immortalized adipose-derived stem cell near-infrared photobiomodulation neurodegenerative disease neurogenesis photobiomodulation trans-differentiation

NiO-Ce_(0.5)Zr_(0.5)O_2 catalysts prepared by citric acid method for steam reforming of ethanol

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Journal of Rare Earths 2008年第6期26卷 831-835页

作者：叶季蕾王阳刘源 department of Catalysis sciences and technology School of Chemical Engineering Tianjin University

NiO-Ce0.5Zr0.5O2 catalysts were prepared by citrate method and used for hydrogen production from steam reforming of ethanol （SRE）. The effect of nickel content and space velocity on the catalytic performance was investigated. The prepared catalysts were characterized with XRD and thermal analysis techniques. 20%NiO-Ce0.5Zr0.5O2catalyst was very active and selective for hydrogen production via SRE, in which ethanol conversion of 100% could be obtained with feed component of 20% （H2O＋EtOH） and 80% N2, water/ethanol of 3/1 in molar ratio at 350 ℃. Also, the catalyst showed good stability for anti-sintering and carbon-resistance. The XRD illuminated that both NiO and Ce0.5Zr0.5O2 crystal sizes were very small in NiO-Ce0.5Zr0.5O2 catalyst, and Ce0.5Zr0.5O2 solid solution was formed.

关键词： nickel CeO2 ZrO2 steam reforming ethanol hydrogen rare earths

基于工程化的DNA适配体PROTAC用于p53-R175H驱动癌症的精准治疗（英文）

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Science Bulletin 2024年第13期 2122-2135页

作者：孔令平孟凡路周萍葛瑞鑫耿小珊杨志豪李果张琳琳王竞马金峰董诚周军吴思晋钟殿胜谢松波 department of Medical Oncology Tianjin Medical University General Hospital Center for Cell Structure and Function Collaborative Innovation Center of Cell Biology in Universities of Shandong College of Life Sciences Shandong Normal University The Province and Ministry Co-sponsored Collaborative Innovation Center for Medical Epigenetics Key Laboratory of Immune Microenvironment and Disease (Ministry of Education) School of Basic Medical Sciences Tianjin Medical University Tianjin Key Laboratory of Lung Cancer Metastasis and Tumor Microenvironment Lung Cancer Institute Tianjin Medical University General Hospital Haihe Laboratory of Cell Ecosystem State Key Laboratory of Medicinal Chemical Biology College of Life Sciences Nankai University Wisdom Lake Academy of Pharmacy Xi'an Jiaotong-Liverpool University department of Ophthalmology Tianjin Medical University General Hospital Laboratory of Molecular Ophthalmology Tianjin Key Laboratory of Ocular Traum1 Tianjin Medical University

Targeting oncogenic mutant p53 represents an attractive strategy for cancer treatment due to the high frequency of gain-of-function mutations and ectopic expression in various cancer types. Despite extensive efforts, the absence of a druggable active site for small molecules has rendered these mutants therapeutically non-actionable. Here we develop a selective and effective proteolysis-targeting chimera(PROTAC) for p53-R175H, a common hotspot mutant with dominant-negative and oncogenic *** a novel iterative molecular docking-guided post-SELEX(systematic evolution of ligands by exponential enrichment) approach, we rationally engineer a high-performance DNA aptamer with improved affinity and specificity for p53-R175H. Leveraging this resulting aptamer as a binder for PROTACs, we successfully developed a selective p53-R175H degrader, named dp53m. dp53m induces the ubiquitin–protea some-dependent degradation of p53-R175H while sparing wildtype p53. Importantly, dp53m demonstrates significant antitumor efficacy in p53-R175H-driven cancer cells both in vitro and in vivo, without toxicity. Moreover, dp53m significantly and synergistically improves the sensitivity of these cells to cisplatin, a commonly used chemotherapy drug. These findings provide evidence of the potential therapeutic value of dp53m in p53-R175H-driven cancers.

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Polyploidy events shaped the expansion of transcription factors in Cucurbitaceae and exploitation of genes for tendril development

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Horticultural Plant Journal 2022年第5期8卷 562-574页

作者： Yu Zhang Yingchao Zhang Bing Li Xiao Tan Changping Zhu Tong Wu Shuyan Feng Qihang Yang Shaoqin Shen Tong Yu Zhuo Liu Xiaoming Song College of life sciences/Center for Genomics and Bio-computing North China University of Science and TechnologyTangshanHebei 063210China Institute of Cash Crops Hebei Academy of Agriculture and Forestry SciencesShijiazhuangHebei 050051China School of life Science and technology University of Electronic Science and Technology of ChinaChengduSichuan 610054China Food Science and technology department University of Nebraska-LincolnLincolnNE 68588USA

Cucurbitaceae is one of the most important plant families distributed *** factors(TFs)regulate plant growth at the transcription ***,we performed a systematic analysis of 42641 TFs from 63 families in 14 Cucurbitaceae and 10 non-cucurbit ***-genome duplication(WGD)was the dominant event type in almost all Cucurbitaceae *** TF families were divided into 1210 orthogroups(OGs),of which,112 were unique to *** the loss of several gene families was detected in Cucurbitaceae,the gene families expanded in five species that experienced a WGD event comparing with *** findings revealed that the recent WGD events that had occurred in Cucurbitaceae played important roles in the expansion of most TF *** functional enrichment analysis of the genes that significantly expanded or contracted uncovered five gene families,AUX/IAA,NAC,NBS,HB,and ***,we conducted a comprehensive analysis of the TCP gene family and identified 16 tendril-related(TEN)genes in 11 Cucurbitaceae ***,the characteristic sequence changed from CNNFYFP to CNNFYLP in the TEN gene(Bhi06M000087)of Benincasa ***,we identified a new characteristic sequence,YNN,which could be used for TEN gene exploitation in *** conclusion,this study will serve as a reference for studying the relationship between gene family evolution and genome ***,it will provide rich genetic resources for functional Cucurbitaceae studies in the future.

关键词： Cucurbitaceae Transcription factors(TFs) Whole-genome duplication(WGD) Expansion and contraction TCP gene family Tendrilrelated genes(TEN)

Hexafluoropropylene oxide trimer acid,a perfluorooctanoic acid alternative,induces cardiovascular toxicity in zebrafish embryos

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Journal of Environmental sciences 2024年第5期139卷 460-472页

作者： Sujie Sun Li Zhang Xue Li Lu Zang Ling Huang Junquan Zeng Zigang Cao Xinjun Liao Zilin Zhong Huiqiang Lu Jianjun Chen Jiangxi Engineering Laboratory of Zebrafish Modeling and Drug Screening for Human Diseases Jiangxi Key Laboratory of Developmental Biology of OrgansCenter for Clinical Research Center of the Affiliated Hospital of Jinggangshan UniversityJi’an 343009China Translational Research Institute of Brain and Brain-like Intelligence Shanghai Key Laboratory of Anesthesiology and Brain Functional ModulationDepartment of PediatricsShanghai Fourth People’s HospitalSchool of MedicineTongji UniversityShanghai 200434China State Environmental Protection Key Laboratory of Environmental Health Impact Assessment of Emerging Contaminants School of Environmental Sciences and EngineeringShanghai Jiao Tong UniversityShanghai 200240China department of Interventional and Vascular Surgery Affiliated Hospital of Jinggangshan UniversityJi’an 343009China department of Internal Medicine and Hematology Affiliated Hospital of Jinggangshan UniversityJi’an 343009China

As an increasingly used alternative to perfluorooctanoic acid(PFOA),hexafluoropropylene oxide trimer acid(HFPO-TA)has been widely detected in global water ***,little is known regarding its toxic effects on cardiovascular ***,zebrafish embryos were treated with egg water containing 0,60,120,or 240 mg/L *** showed that HFPO-TA treatment led to a significant reduction in both larval survival percentage and heart ***,HFPO-TA exposure caused severe pericardial edema and elongation of the sinus venous to bulbus arteriosus distance(SV-BA)in Tg(myl7:GFP)transgenic larvae,disrupting the expression of genes involved in heart development and thus causing abnormal heart *** sprouting angiogenesis was observed in the 120 and 240 mg/L exposed Tg(fli:GFP)transgenic ***-TA treatment also impacted the mRNA levels of genes involved in the vascular endothelial growth factor(VEGF)pathway and embryonic vascular ***-TA exposure significantly decreased erythrocyte number in Tg(gata1:DsRed)transgenic embryos and influenced gene expression associated with the heme metabolism ***-TA also induced oxidative stress and altered the transcriptional levels of genes related to cell cycle and apoptosis,inhibiting cell proliferation while promoting ***,HFPO-TA exposure may induce abnormal development of the cardiovascular and hematopoietic systems in zebrafish embryos,suggesting it may not be a suitable or safe alternative for PFOA.

关键词： Hexafluoropropylene oxide trimer acid Heart development Vascular development Hemopoiesis Zebrafish embryos

Multisensor information fusion:Future of environmental perception in intelligent vehicles

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Journal of Intelligent and Connected Vehicles

Journal of Intelligent and Connected Vehicles 2024年第3期7卷 163-176页

作者： Yongsheng Zhang Chen Tu Kun Gao Liang Wang CRRC Qishuyan Institute Co. Ltd.Changzhou 213011China School of Information Science and Engineering Southeast UniversityNanjing 211189China department of Architecture and Civil Engineering Chalmers University of TechnologyGothenburg SE-41296Sweden School of Vehicle and Mobility Tsinghua UniversityBeijing 100084China

As urban transportation increasingly impacts daily life,efficiently utilizing traffic resources and developing public transportation have become crucial for addressing issues such as congestion,frequent accidents,and noise *** rapid advancement of intelligent autonomous driving technologies,particularly environmental perception technologies,offers new directions for solving these *** review discusses the application of multisensor information fusion technology in environmental perception for intelligent vehicles,analyzing the components and performance of various sensors and their specific applications in autonomous *** multisensor information fusion,the accuracy of environmental perception is enhanced,optimizing decision support for autonomous driving systems and thereby improving vehicle safety and driving *** study also discusses the challenges faced by information fusion technology and future development trends,providing references for further research and application in intelligent transportation systems.

关键词： intelligent vehicles environmental perception multisensor information fusion autonomous driving traffic safety