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SWIR FluorescenceImaging In Vivo Monitoring and Evaluating Implanted M2 Macrophages in Skeletal Muscle Regeneration

Engineering 2024年第2期33卷 283-294页

作者： Mo Chen Yuzhou Chen Sijia Feng Shixian Dong luyi sun Huizhu Li Fuchun Chen Nguyen Thi Kim Thanh Yunxia Li Shiyi Chen You Wang Jun Chen Sports Medicine Institute of Fudan University Department of Sports MedicineHuashan HospitalFudan UniversityShanghai 200040China Department of Bone and Joint Surgery Department of OrthopedicsRenji HospitalSchool of MedicineShanghai Jiaotong UniversityShanghai 200127China Department of Anatomy and Physiology School of MedicineShanghai Jiao Tong UniversityShanghai 200025China Key Laboratory of Infrared System Detection&Imaging Technology Shanghai Institute of Technical PhysicsChinese Academy of SciencesShanghai 200083China Biophysics Group Department of Physics and AstronomyUniversity College LondonLondon WC1E 6BTUK Healthcare Biomagnetic and Nanomaterials Laboratories University College LondonLondon W1S 4BSUK

Skeletal muscle has a robust regeneration ability that is impaired by severe injury,disease,and aging.resulting in a decline in skeletal muscle function.Therefore,improving skeletal muscle regeneration is a key challenge in treating skeletal muscle-related disorders.Owing to their significant role in tissue regeneration,implantation of M2 macrophages(M2MФ)has great potential for improving skeletal muscle regeneration.Here,we present a short-wave infrared(SWIR)fluorescence imaging technique to obtain more in vivo information for an in-depth evaluation of the skeletal muscle regeneration effect after M2MФtransplantation.SWIR fluorescence imaging was employed to track implanted M2MФin the injured skeletal muscle of mouse models.It is found that the implanted M2MФaccumulated at the injury site for two weeks.Then,SWIR fluorescence imaging of blood vessels showed that M2MФimplantation could improve the relative perfusion ratio on day 5(1.09±0.09 vs 0.85±0.05;p=0.01)and day 9(1.38±0.16 vs 0.95±0.03;p=0.01)post-injury,as well as augment the degree of skeletal muscle regencration on day 13 post-injury.Finally,multiple linear regression analyses determined that post-injury time and relative perfusion ratio could be used as predictive indicators to evaluate skeletal muscle regeneration.These results provide more in vivo details about M2MФin skeletal muscle regeneration and confirm that M2MФcould promote angiogenesis and improve the degree of skeletal muscle repair,which will guide the research and development of M2MФimplantation to improve skeletal muscle regeneration.

关键词： In vivo Short-wave infrared Skeletal muscle Macrophage Regeneration

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Using NH_(2)-MIL-125(Ti)for efficient removal of Cr(Ⅵ)and Rh B from aqueous solutions:Competitive and cooperative behavior in the binary system

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Journal of Environmental Sciences 2024年第2期136卷 437-450页

作者： Lei Zheng Lixia sun Jiangbo Qiu Junling Song luyi Zou Yue Teng Yongzhong Zong Hongyan Yu School of Environmental and Civil Engineering Jiangnan UniversityWuxi 214122China School of Chemical and Material Engineering Jiangnan UniversityWuxi 214122China Kunming South Water Co. Ltd.Kunming 650501China Jiangsu Key Laboratory of Anaerobic Biotechnology Jiangnan UniversityWuxi 214122China

The coexistence of inorganic and organic contaminants is a challenge for real-life water treatment applications.Therefore,in this research,we used NH_2-MIL-125(Ti)to evaluate the single adsorption of hexavalent chromium(Cr(Ⅵ))or Rhodamine B(RhB)in an aqueous solution and further investigate simultaneous adsorption experiments to compare the adsorption behavior changes.The main influencing factors,for example,reaction time,initial concentration,reaction temperature,and pH were studied in detail.In all reaction systems,the pseudo-second-order kinetic and Langmuir isotherm models were well illuminated the adsorption progress of Cr(Ⅵ)and RhB.Thermodynamic studies showed that the adsorption process was spontaneous and endothermic.As compared to the single system,the adsorption capacity of Cr(Ⅵ)in the binary system gradually decreased as the additive amount of RhB increased,whereas the adsorption capacity of RhB in the binary system was expanded brilliantly.When the binary reaction system contained 100 mg/L Cr(Ⅵ),the removal rate of RhB increased to 97.58%.The formation of Cr(Ⅵ)-RhB and Cr(Ⅲ)-RhB complexes was the cause that provided facilitation for the adsorption of RhB.These findings prove that the interactions during the water treatment process between contaminants may obtain additional benefits,contributing to a better adsorption capacity of co-existing contaminant.

关键词： Adsorption Heavy metal ion Organic dye Simultaneous removal Mechanism studies

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Smart Soft Materials with Multiscale Architecture and Dynamic Surface Topographies

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Accounts of Materials Research 2022年第11期3卷 1115-1126页

作者： Songshan Zeng Andrew T.Smith Kuangyu Shen luyi sun Polymer Program Institute of Materials Science and Department of Chemical&Biomolecular EngineeringUniversity of ConnecticutStorrsConnecticut 06269United StatesPresent Address:Macao Institute of Materials Science and Engineering(MIMSE)Zhuhai MUST Science and Technology Research InstituteFaculty of Innovation EngineeringMacao University of Science and TechnologyTaipa999078MacaoChina Polymer Program Institute of Materials Science and Department of Chemical&Biomolecular EngineeringUniversity of ConnecticutStorrsConnecticut 06269United States

CONSPECTUS:Smart soft materials have one or more characteristics that can be significantly altered in convertible fashions by external stimuli,such as light,moisture,mechanical force,temperature,electric/magnetic fields,pH,and so on.These materials can lead to widespread application in multifunctional smart devices.Recently,various smart soft materials have been developed under the inspiration of the intriguing multiscale structures,adaptive mechanisms,and dynamic responses of natural life,with an aim to further design advanced material systems with novel,intriguing,and unprecedented properties.

关键词： Smart properties. Dynamic

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Scaled-up synthesis of defect-rich layered double hydroxide monolayers without organic species for efficient oxygen evolution reaction

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Green Energy & Environment 2022年第5期7卷 975-982页

作者： Haoyuan Chi Jingwen Dong Tian Li Sha Bai Ling Tan Jikang Wang Tianyang Shen Guihao Liu Lihong Liu luyi sun Yufei Zhao Yu-Fei Song State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical TechnologyBeijing100029China College of Chemistry Key Laboratory of Theoretical&Computational Photochemistry of Ministry of EducationBeijing Normal UniversityBeijing100875China Polymer Program Institute of Materials Science and Department of Chemical&Biomolecular EngineeringUniversity of ConnecticutStorrsConnecticut06269USA Beijing Advanced Innovation Center for Soft Matter Science and Engineering Beijing University of Chemical TechnologyBeijing100029China

The scaled-up synthesis of organic-free monolayer nanomaterials is highly desirable,especially in obtaining green energy by electrocatalysis.In this study,a method for the scaled-up synthesis of the series of monolayer layered double hydroxides(LDHs)without the addition of organic solvents is reported via the separate nucleation and aging steps process.The resulting monolayer LDHs with the thicknesses of less than 1 nm showed a narrow thickness distribution.X-ray absorption fine-structure revealed that monolayer NiFe-LDH nanosheets have a number of oxygen and metal vacancies defects.As a practical application,monolayer NiFe-LDH nanosheets containing defects showed an enhanced electrocatalytic water oxidation activity compared with that of bulk NiFe-LDH.Density functional theory calculations uncovered that excellent catalytic activity is attributed to vacancies defects.The proposed method is an economical and universally applicable strategy for the scaled-up production of monolayer LDHs.

关键词： process synthesis monolayer

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Assembly of exfoliated α-zirconium phosphate nanosheets:Mechanisms and versatile applications

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Aggregate 2022年第4期3卷 41-60页

作者： Hao Ding Abbas Ahmed Kuangyu Shen luyi sun Polymer Program Institute of Materials ScienceUniversity of ConnecticutStorrsConnecticutUSA Department of Chemical and Biomolecular Engineering University of ConnecticutStorrsConnecticutUSA Department of Biomedical Engineering University of ConnecticutStorrsConnecticutUSA

α-Zirconium phosphate(Zr(HPO_(4))_(2)⋅H_(2)O,α-ZrP)is an inorganic layered compound.Since the first report of crystallineα-ZrP in 1964,thanks to its simple synthesis and unique physiochemical properties,α-ZrP has found widespread application in many fields including mechanical reinforcing,barrier improvement,flame retardancy,anticorrosion,catalysis,environment,energy,and medicine.Because of the ease of exfoliation ofα-ZrP to obtain single-layer nanosheets,as well as its rich surface chemistry thanks to the high density of orderly arranged surface acidic hydroxyl groups,α-ZrP single-layer nanosheets are ideal building blocks for self-assembly or assembly with other chemicals.The assembly ofα-ZrP nanosheets could form a randomly dispersed structure(isotropic),roughly ordered structure(nematic),or highly ordered structure(smectic)within liquid colloids or solid hybrids(including hydrogels).Thanks to the combination of the unique structures and the novel functions of the components,the assembled materials have found a wide verity of applications due to their excellent properties.In this article,the methods to synthesizeα-ZrP,the approaches and mechanisms to exfoliateα-ZrP,and the strategies to assembleα-ZrP nanosheets to form various structures,as well as the applications of the assembled materials are reviewed.The emerging prospects ofα-ZrP nanosheets as a key material in next-generation functional applications are envisioned.

关键词： application assembly exfoliation nanosheets α-zirconium phosphate

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Coassembled ionic liquid/laponite hybrids as effective CO2 adsorbents

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Journal of Energy Chemistry 2017年第5期26卷 1026-1029页

作者： Yin Xu Yingjie Zhou Jingjing Liu luyi sun Department of Environmental Science and Engineering College of Environment and ResourcesXiangtan UniversityXiangtan 411105HunanChina Department of Materials Physics School of Physics and Optoelectronic EngineeringNanjing University of Information Science&TechnologyNanjing 210044JiangsuChina Department of Chemical&Biomolecular Engineering and Polymer Program Institute of Materials ScienceUniversity of Connecticut StorrsCT 06269USA

Hybrid adsorbents for COcapture were prepared by coassembling laponite（LP） nanosheets and 1-nbutyl-3-methylimidazolium chloride（BMIMCl）. The prepared BMIMCl/LP layered hybrids were systematically characterized. The interlayer distance of the BMIMCl/LP layered hybrids expanded with an increasing concentration of BMIMCl, indicating that cumulative BMIMCl was intercalated into the LP layers. The efficiency of BMIMCl toward COcapture was significantly enhanced after it was immobilized within LP layers.

关键词： CO2 capture Hybrid adsorbent Coassembly Laponite Ionic liquid

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Ultra-transparent nanostructured coatings via flow-induced one-step coassembly

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Nano Materials Science 2022年第2期4卷 97-103页

作者： Jingjing Liu Sonia E.Chavez Hao Ding Maria M.Farooqui Zaili Hou Sharon Lin Thomas D.D'Auria Julia M.Kennedy Anna Marie LaChance luyi sun Polymer Program Institute of Materials ScienceUniversity of ConnecticutStorrsConnecticut06269United States Department of Chemical&Biomolecular Engineering University of ConnecticutStorrsConnecticut06269United States Department of Biomedical Engineering University of ConnecticutStorrsConnecticut06269United States

Polyvinyl alcohol(PVA)/laponite(LP)nanocomposite coatings were fabricated via a facile one-step coassembly process.The formed nanocoatings contain a high concentration of LP nanosheets,which can be well aligned along the substrate surface during the coassembly process.Due to the highly orientated structure,the flexible nanocoatings exhibit ultra-high transparency and superior mechanical properties,and can also act as excellent gas barriers.Such nanocoatings can be exceptional candidates for a variety of applications,such as food packaging.

关键词： Nanocoating Coassembly Polyvinyl alcohol Laponite

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Synthesis, properties, and applications of graphene oxide/reduced graphene oxide and their nanocomposites

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Nano Materials Science 2019年第1期1卷 31-47页

作者： Andrew T. Smith Anna Marie LaChance Songshan Zeng Bin Liu luyi sun Polymer Program Institute of Materials Science University of Connecticut Storrs Connecticut 06269 United States Department of Chemical and Biomolecular Engineering University of Connecticut Storrs Connecticut 06269 United States of Materials Science and Engineering Beijing University of Chemical Technology Beijing 100029 China Department of Biomedical Engineering University of Connecticut Storrs Connecticut 06269 United States

Thanks to their remarkable mechanical, electrical, thermal, and barrier properties, graphene-based nanocomposites have been a hot area of research in the past decade. Because of their simple top-down synthesis, graphene oxide (GO) and reduced graphene oxide (rGO) have opened new possibilities for gas barrier, membrane separation, and stimuli-response characteristics in nanocomposites. Herein, we review the synthesis techniques most commonly used to produce these graphene derivatives, discuss how synthesis affects their key material properties, and highlight some examples of nanocomposites with unique and impressive properties. We specifically highlight their performances in separation applications, stimuli-responsive materials, anti-corrosion coatings, and energy storage. Finally, we discuss the outlook and remaining challenges in the field of practical industrial-scale production and use of graphene-derivative-based polymer nanocomposites.

关键词： Graphene oxide Reduced graphene oxide Graphene quantum dots polymer Nanocomposites Synthesis Properties of graphene and graphene oxide Applications

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Two-dimensional MXenes:New frontier of wearable and flexible electronics

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InfoMat 2022年第4期4卷 1-28页

作者： Abbas Ahmed Sudeep Sharma Bapan Adak Md Milon Hossain Anna Marie LaChance Samrat Mukhopadhyay luyi sun Polymer Program Institute of Materials ScienceUniversity of ConnecticutStorrsConnecticutUSA Advanced Sensor and Energy Research(ASER)Lab Department of Electronic EngineeringKwangwoon UniversitySeoulSouth Korea Department of Textile and Fiber Engineering Indian Institute of TechnologyNew DelhiIndia Department of Textile Engineering Chemistry and ScienceNorth Carolina State UniversityRaleighNorth CarolinaUSA Department of Textile Engineering Khulna University of Engineering&TechnologyKhulnaBangladesh Department of Chemical and Biomolecular Engineering University of ConnecticutStorrsConnecticutUSA

Wearable electronics offer incredible benefits in mobile healthcare monitoring,sensing,portable energy harvesting and storage,human-machine interactions,etc.,due to the evolution of rigid electronics structure to flexible and stretchable devices.Lately,transition metal carbides and nitrides(MXenes)are highly regarded as a group of thriving two-dimensional nanomaterials and extraordinary building blocks for emerging flexible electronics platforms because of their excellent electrical conductivity,enriched surface functionalities,and large surface area.This article reviews the most recent developments in MXene-enabled flexible electronics for wearable electronics.Several MXeneenabled electronic devices designed on a nanometric scale are highlighted by drawing attention to widely developed nonstructural attributes,including 3D configured devices,textile and planer substrates,bioinspired structures,and printed materials.Furthermore,the unique progress of these nanodevices is highlighted by representative applications in healthcare,energy,electromagnetic interference(EMI)shielding,and humanoid control of machines.The emerging prospects of MXene nanomaterials as a key frontier in nextgeneration wearable electronics are envisioned and the design challenges of these electronic systems are also discussed,followed by proposed solutions.

关键词： flexible electronics MXene nanostructures wearable electronics

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Blood neutrophil extracellular traps:a novel target for the assessment of mammary health in transition dairy cows

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Journal of Animal Science and Biotechnology 2023年第3期14卷 1068-1079页

作者： luyi Jiang Huizeng sun Fengfei Gu Jin He Fengqi Zhao Jianxin Liu Institute of Dairy Science College of Animal SciencesZhejiang UniversityHangzhouChina Ministry of Education Key Laboratory of Molecular Animal Nutrition Zhejiang UniversityHangzhouChina Institute of Animal Genetics and Reproduction College of Animal SciencesZhejiang UniversityHangzhouChina Department of Animal&Veterinary Sciences University of VermontBurlingtonUSA

Background:Mammary health is important for transition dairy cows and has been well recognized to exert decisive effects on animal welfare.However,the factors influencing mammary health are still unclear.Differential somatic cell count(DSCC)could reflect the mastitis risk since it is the percentage of neutrophils plus lymphocytes in total somatic cells and could be reflective of mammary health of dairy cows.This work aimed to investigate the assessment and prognosis of the health of transition cows based on blood neutrophil extracellular traps(NETs).Results:Eighty-four transition Holstein dairy cows were selected.The serum was sampled in all the animals at week 1 pre-and postpartum,and milk was sampled at week 1 postpartum.Based on the DSCC in milk at week 1,cows with lower(7.4%±4.07%,n=15)and higher(83.3%±1.21%,n=15)DSCCs were selected.High DSCC cows had higher levels of red blood cell counts(P<0.05),hemoglobin(P=0.07),and hematocrit(P=0.05),higher concentrations of serum oxidative variables[reactive oxygen species(P<0.05),malondialdehyde(P<0.05),protein carbonyl(P<0.05),and 8-hydroxy-2-deoxyguanosine(P=0.07)],higher levels of serum and milk NETs(P<0.05)and blood-milk barrier indicators,including serumβ-casein(P=0.05)and milk immunoglobulin G2(P=0.09),than those of low DSCC cows.In addition,lower concentrations of serum nutrient metabolites(cholesterol and albumin)(P<0.05)and a lower level of serum deoxyribonuclease I(P=0.09)were observed in high DSCC cows than in low DSCC cows.Among the assessments performed using levels of the three prepartum serum parameters(NETs,deoxyribonuclease I andβ-casein),the area under the curve(0.973)of NETs was the highest.In addition,the sensitivity(1.00)and specificity(0.93)were observed for the discrimination of these cows using NETs levels with a critical value of 32.2 ng/mL(P<0.05).Conclusions:The formation of NETs in blood in transition dairy cows may damage the integrity of the blood-milk barrier and thereby increase the risk for mastitis in postpartum cows.

关键词： Blood-milk barrier Differential somatic cell count Mastitis risk Neutrophil extracellular traps

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