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Synthetic Lethal Interactions Prediction Based on Multiple Similarity Measures Fusion

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Journal of Computer Science & Technology 2021年第2期36卷 261-275页

作者： Lian-Lian Wu Yu-Qi Wen xiao-Xi Yang bo-Wei Yan Song He xiao-chen bo Academy of Medical Engineering and Translational Medicine Tianjin UniversityTianjin 300072China Department of Biotechnology Beijing Institute of Radiation MedicineBeijing 100850China Experimental Center Beijing Friendship HospitalCapital Medical UniversityBeijing 100850China

The synthetic lethality(SL)relationship arises when a combination of deficiencies in two genes leads to cell death,whereas a deficiency in either one of the two genes does *** survival of the mutant tumor cells depends on the SL partners of the mutant gene,thereby the cancer cells could be selectively killed by inhibiting the SL partners of the oncogenic genes but normal cells could ***,there is an urgent need to develop more efficient computational methods of SL pairs identification for cancer targeted *** this paper,we propose a new approach based on similarity fusion to predict SL *** types of gene similarity measures are integrated and/c-nearest neighbors algorithm(k-NN)is applied to achieve the similarity-based classification task between gene *** a similarity-based method,our method demonstrated excellent performance in multiple *** the effectiveness of our method,the ease of use and expansibility can also make our method more widely used in practice.

关键词： synthetic lethality similarity measures fusion k-nearest neighbor multi-dimensional data

Primary graft dysfunction after liver transplantation

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Hepatobiliary & Pancreatic Diseases International 2014年第2期13卷 125-137页

作者： xiao-bo chen Ming-Qing Xu Department of Liver and Vascular Surgery West China Hospital Sichuan University

BACKGROUND: Primary graft dysfunction (PGD) causes complications in liver transplantation, which result in poor prognosis. Recipients who develop PGD usually experience a longer intensive care unit and hospital stay and have higher mortality and graft loss rates compared with those without graft dysfunction. However, because of the lack of universally accepted definition, early diagnosis of graft dysfunction is difficult. Additionally, numerous factors affect the allograft function after transplantation, making the prediction of PGD more difficult. The present review was to analyze the literature available on PGD and to propose a *** SOURCE: A search of PubMed (up to the end of 2012) for English-language articles relevant to PGD was performed to clarify the characteristics, risk factors, and possible treatments or interventions for ***: There is no pathological diagnostic standard; many documented definitions of PGD are different. Many factors such as donor status, procurement and transplant process and recipient illness may affect the function of graft, and ischemia reperfusion injury is considered the direct cause. Potentia managements which are helpful to improve graft function were investigated. Some of them are ***: Our analyses suggested that the definition of PGD should include one or more of the following variables: (1)bilirubin ≥10 mg/dL on postoperative day 7; (2) internationa normalized ratio ≥1.6 on postoperative day 7; and (3) alanine aminotransferase or aspartate aminotransferase >2000 IU/L within 7 postoperative days. Reducing risk factors may decrease the incidence of PGD. A majority of the recipients could recover from PGD; however, when the graft progresses intoprimary non-function, the patients need to be treated with retransplantation.

关键词： graft function primary graft dysfunction initial poor function primary non-function liver transplantation

Biodegradation of Mg-14Li alloy in simulated body fluid: A proof-of-concept study

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Bioactive Materials 2018年第1期3卷 110-117页

作者： xiao-bo chen Chuanqiang Li Daokui Xu School of Engineering College of ScienceEngineering and HealthRMIT UniversityCarltonVIC 3053Australia Department of Materials Science and Engineering Monash UniversityClayton3800VICAustralia Key Laboratory of Nuclear Materials and Safety Assessment Institute of Metal ResearchChinese Academy of SciencesShenyang110016China Key Laboratory for Anisotropy and Texture of Materials(Ministry of Education) Northeastern UniversityShenyang110819China

High corrosion kinetics and localised corrosion progress are the primary concerns arising from the clinical implementation of magnesium(Mg)based implantable *** this study,a binary Mglithium(Li)alloy consisting a record high Li content of 14%(in weight)was employed as model material aiming to yield homogenous and slow corrosion behaviour in a simulated body fluid,*** essential medium(MEM),in comparison to that of generic Mg alloy AZ31 and biocompatible Mg-0.5Zn-0.5Ca *** electron microscopy examination reveals single-phase microstructural characteristics of Mg-14Li(b-Li),whilst the presence of insoluble phases,cathodic to a-Mg matrix,in AZ31 and *** slight differences exist in the corrosion kinetics of all the specimens over a short-term time scale(no longer than 60 min),as indicated by potentiodynamic polarisation and electrochemical impedance spectroscopy,profound variations are apparent in terms of immersion tests,*** loss and hydrogen evolution measurements(up to 7 days).Cross-sectional micrographs unveil severe pitting corrosion in AZ31 and Mg-0.5Zn-0.5Ca,but not the case for Mg-14Li.X-ray diffraction patterns and X-ray photoelectron spectroscopy confirm that a compact film(25 mm in thickness)consisting of lithium carbonate(Li2CO3)and calcium hydroxide was generated on the surface of Mg-14Li in MEM,which contributes greatly to its low corrosion *** is proposed therefore that the single-phase structure and formation of protective and defect-free Li2CO3 film give rise to the controlled and homogenous corrosion behaviour of Mg-14Li in MEM,providing new insights for the exploration of biodegradable Mg materials.

关键词： Biodegradable materials Magnesium-lithium alloys MEM SEM Potentiodynamic polarisation

Engineered T cells and their therapeutic applications in autoimmune diseases

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Zoological Research 2022年第2期43卷 150-165页

作者： Lei Bao xiao-chen bo Huai-Wen Cao chen Qian Zeng Wang Bin Li Department of Immunology and Microbiology Shanghai Institute of ImmunologyShanghai Jiao Tong University School of MedicineShanghai Jiao Tong UniversityShanghai 200025China

Chimeric antigen receptor T cells(CAR-T cells) are engineered recombinant T cells, which were initially used to treat hematopoietic malignancies and are now widely used in the treatment of various diseases. Considering their intrinsic targeting efficiency, CAR-T cells show considerable potential in the treatment of autoimmune ***, regulatory T cells(Treg), a subset of CD4 T cells exhibiting immunosuppressive functions,have attracted increasing attention regarding CARTreg cell production. In this review, we report on recent developments in preclinical and clinical studies on CAR-T cells in autoimmune diseases and provide an outlook on opportunities and challenges of CAR-T application in such diseases.

关键词： Chimeric antigen receptor T cells Cell immunotherapy Autoimmune diseases

Corrosion resistance of self-cleaning silane/polypropylene composite coatings on magnesium alloy AZ31

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Journal of Materials Science & Technology 2020年第6期41卷 43-55页

作者： Zhao-Qi Zhang Rong-Chang Zeng Cun-Guo Lin Li Wang xiao-bo chen Dong-Chu chen Corrosion Laboratory for Light Metals College of Material Science and EngineeringShandong University of Science and TechnologyQingdao 266590China State Key Laboratory for Marine Corrosion and Protection Luoyang Ship Material Research InstituteQingdao 266101China School of Engineering RMIT UniversityCarlton 3053VICAustralia School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450002China School of Materials Science and Energy Engineering Foshan UniversityFoshan 528000China

Magnesium(Mg)and its alloys have been widely used in a variety of industrial fields,however,the high corrosion rate and surface contamination restrict their *** this study,a corrosion-resistant polymer coating with self-cleaning properties on Mg alloy AZ31 was successfully fabricated via a pretreatment of amino-silane(poly(3-aminopropyl)trimethoxysilane,PAPTMS)and subsequently covered with a polypropylene(PP)*** morphology and chemical compositions were examined using field-emission scanning electron microscopy(FE-SEM),X-ray diffraction(XRD),and Fourier transform infrared spectrophotometry(FT-IR)and X-ray photoelectron spectroscopy(XPS)as *** angle was measured to determine hydrophobicity of the composite *** permeability of the coatings was evaluated through electrochemical impedance spectroscopy(EIS).Corrosion resistance of the coating was investigated using electrochemical and hydrogen evolution *** indicated that PAPTMS/PP coatings possessed a micrometer-scaled porous spherical microstructure,and super-hydrophobicity with high water contact angle(162±3.4°)and low sliding angle(5±0.6°)due to the low surface energy(10.38 mJ/m2).Moreover,the coating exhibited a smaller water diffusion coefficient(8.12×10-10 cm2/s)and water uptake volume fraction(24.5%),demonstrating low water permeability and good physical barrier *** a result,the corrosion current density of PAPTMS/PP coating exhibited approximately three orders of magnitude lower than that of the AZ31 substrate,suggesting excellent corrosion ***,corrosion-resistant mechanism of the hybrid coating was proposed.

关键词： Magnesium alloy Polymer coating Hydrophobicity Corrosion Water permeability

Alliance of atomic-scale/nanoscale Fe/Co active sites with hierarchically porous N-doped carbon frameworks for efficient electrocatalytic oxygen reduction

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Rare Metals 2023年第11期42卷 3766-3779页

作者： Hai-Hua Yang xiao-Rong Qian Na Zhang Xia-Ting Jia Zhi-Yan Wen xiao-bo chen Min-Jie Zhou Key Laboratory of Hunan Province for Advanced Carbon-Based Functional Materials Hunan Institute of Science and TechnologyYueyang414006China School of Chemistry and Chemical Engineering Hunan Institute of Science and TechnologyYueyang414006China School of Physics and Electronic Science Hunan Institute of Science and TechnologyYueyang414006China Department of Chemistry University of Missouri-Kansas CityKansas City64111USA

Ingenious establishment of transition metal-nitrogen-carbon electrocatalysts with diverse catalytic active sites and hierarchically porous frameworks is highly significant to boost the oxygen reduction reaction(ORR)in Zn-air batteries(ZABs).In this study,Fe/Co co-doped zeolitic imidazolium frameworks(ZIFs)and graphitic carbon nitride(g-C_(3)N_(4))were integrated and pyrolyzed to construct carbon-based electrocatalysts containing Fe,Co and N elements(labelled as Co-CoFe@NRPC),in which atomic-sc ale FeN_x and CoN_x,and nano scale metallic Co and CoFe alloy moieties were aligned with hierarchically porous N-doped carbon frameworks constructed by interconnected micropolyhedrons,nano tubes and *** diverse active moieties guaranteed excellent intrinsic catalytic activity,while the hierarchically porous N-doped carbon frameworks ensured admirable accessibility of the catalytic active sites,excellent electrical conductivity,satisfactory mass transport and good ***,the optimized Co-CoFe@NRPC-90(with 90 mg g-C_(3)N_(4) added)electrocatalyst exhibited excellent ORR performance with a high half-wave potential of 885 mV(*** hydrogen electrode(RHE)),diffusion-limiting current density of 6.15 mA·cm^(-2),desirable durability and methanol ***,the liquid ZAB established with Co-CoFe@NRPC-90 as an air-cathode electrocatalyst manifested an outstanding power density(281 mW·cm^(-2))and specific capacity(820.9 mAh·g_(Zn)^(-1)),transcending the liquid ZAB based on a commercial Pt/C electrocatalyst.

关键词： Fe/Co co-doped zeolitic imidazolium frameworks Graphitic carbon nitride Transition metal-nitrogen-carbon electrocatalyst Oxygen reduction reaction(ORR)

Zinc finger protein A20 protects rats against chronic liver allograft dysfunction

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World Journal of Gastroenterology 2012年第27期18卷 3537-3550页

作者： Jie Yang Ming-Qing Xu Lu-Nan Yan xiao-bo chen Jiao Liu Department of Liver and Vascular Surgery Liver Transplanta-tion Center West China Hospital Sichuan University Chengdu610041 Sichuan Province China

AIM： To investigate the effect of zinc finger protein A20 on chronic liver allograft dysfunction in rats. METHODS： AIIogeneic liver transplantation from DA rats to Lewis rats was performed. Chronic liver allograft dysfunction was induced in the rats by administering low-dose tacrolimus at postoperative day （POD） 5. Hepatic overexpression of A20 was achieved by recom- binant adenovirus （rAd.）-mediated gene transfer ad- ministered intravenously every 10 d starting from POD 10. The recipient rats were injected with physiologi- cal saline, rAdEasy-A20 （1 × 109 pfu/30 g weight） or rAdEasy （1 × 109 pfu/30 g weight） every 10 d through the tail vein for 3 mo starting from POD 10. Liver tissue samples were harvested on POD 30 and POD 60. RESULTS： Liver-transplanted rats treated with only tacrolimus showed chronic allograft dysfunction with severe hepatic fibrosis. A20 overexpression ameliorated the effects on liver function, attenuated liver allograft fibrosis and prolonged the survival of the recipient rats. Treatment with A20 suppressed hepatic protein pro- duction of tumor growth factor （TGF）-β1, interleukin- 113, caspase-8, CD40, CD40L, intercellular adhesion molecule-i, vascular cell adhesion molecule-1 and E-selectin. A20 treatment suppressed liver cell apopto- sis and inhibited nuclear factor-KB activation of Kupffer cells （KCs）, liver sinusoidal endothelial cells （LSECs） and hepatic stellate cells （HSCs）, and it subsequently decreased cytokine mRNA expression in KCs and LSECs and reduced the production of TGF-β1 in HSCs. CONCLUSION： A20 might prevent chronic liver allogra- ft dysfunction by re-establishing functional homeostasis of KCs, LSECs and HSCs.

关键词： Chronic allograft dysfunction Liver trans-plantation Zinc finger protein A20 Rat

Effects of additive NaI on electrodeposition of Al coatings in AlCl_(3)-NaCl-KCl molten salts

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Frontiers of Chemical Science and Engineering 2021年第1期15卷 138-147页

作者： Tianyu Yao Haiyan Yang Kui Wang Haiyan Jiang xiao-bo chen Hezhou Liu Qudong Wang Wenjiang Ding National Engineering Research Center of Light Alloy Net Forming Shanghai Jiao Tong UniversityShanghai 200240China The State Key Laboratory of Metal Matrix Composites Shanghai Jiao Tong UniversityShanghai 200240China School of Engineering RMIT UniversityMelbourneVIC 3000Australia

Effects of NaI as an additive on electrodeposition of Al coatings in AlCl_(3)-NaCl-KCl(80-10-10 wt-%)molten salts electrolyte at 150°C were investigated by means of cyclic voltammetry,chronopotentiometry,scanning electron microscopy and X-ray diffraction(XRD).Results reveal that addition of NaI in the electrolyte intensifies cathodic polarization,inhibits growth of Al deposits and increases number density of charged *** electrodeposition of Al coatings in the AlCl_(3)-NaCl-KCl molten salts electrolyte proceeds via three-dimensional instantaneous nucleation which however exhibits irrelevance with *** deposition results indicate that NaI could facilitate the formation of uniform Al deposits.A compact coating consisting of Al deposits with an average particle size of 3μm was obtained at a current density of 50 mA∙cm^(−2) in AlCl_(3)-NaCl-KCl molten salts electrolyte with 10 wt-%*** analysis confirmed that NaI could contribute to the formation of Al coating with a preferred crystallographic orientation along(220)plane.

关键词： NaI additive electrodeposition molten salts Al coating

Mechanical and Corrosion Behavior of a Biomedical Mg–6Zn–0.5Zr Alloy Containing a Large Number of Twins

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Acta Metallurgica Sinica(English Letters) 2023年第3期36卷 439-455页

作者： Chang‑Jian Yan bo Guan Yun‑Chang Xin Ling‑Yu Zhao Guang‑Jie Huang Rui Hong xiao‑bo chen Paul K.Chu Institute of Corrosion Science and Technology Guangdong 510070China International Joint Laboratory for Light Alloys College of Materials Science and EngineeringChongqing UniversityChongqing 400030China Key Laboratory for Light‑Weight Materials Nanjing Tech UniversityNanjing 210009China School of Mechanical Engineering Yangzhou UniversityYangzhou 225127China School of Engineering RMIT UniversityCarlton 3053VICAustralia Department of Physics Department of Materials Science&EngineeringDepartment of Biomedical EngineeringCity University of Hong KongTat Chee AvenueKowloonHong KongChina Institute of Metal Research Chinese Academy of SciencesShenyang 110016China

The strong texture of Mg alloys can lead to strong tension–compression yield asymmetry and corrosion anisotropy,and this will consequently affect the effectiveness of hard tissue implants.A biomedical Mg–6Zn–0.5Zr alloy containing a large number of{1012}primary twins and{1012}–{1012}secondary twins is successfully prepared by cross *** dual twin structure not only removes the tension–compression yield asymmetry completely,but effectively reduces the corrosion anisotropy without compromise of corrosion *** difference between the largest corrosion rate and smallest one is~1.2 times compared to~1.6 times of the original *** is found that the reduced corrosion anisotropy is related to re-distribution of crystallographic orientations by twins.

关键词： Biomedical Mg alloy Corrosion Mechanical anisotropy Texture Twins