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9篇 您的检索式:作者名="LEI Yuguo"
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1Novel fibrin-fibronectin matrix accelerates mice skin wound healing显示文摘Plasma fibrinogen(F1)and fibronectin(pFN)polymerize to form a fibrin clot that is both a hemostatic and provisional matrix for wound healing.About 90%of plasma F1 has a homodimeric pair ofγchains(γγF1),and 10%has a heterodimeric pair ofγand more acidicγ′chains(γγ′F1).We have synthesized a novel fibrin matrix exclusively from a 1:1(molar ratio)complex ofγγ′F1 and pFN in the presence of highly active thrombin and recombinant Factor XIII(rFXIIIa).In this matrix,the fibrin nanofibers were decorated with pFN nanoclusters(termedγγ′F1:pFN fibrin).In contrast,fibrin made from 1:1 mixture ofγγF1 and pFN formed a sporadic distribution of“pFN droplets”(termedγγF1+pFN fibrin).Theγγ′F1:pFN fibrin enhanced the adhesion of primary human umbilical vein endothelium cells(HUVECs)relative to theγγF1+FN fibrin.Three dimensional(3D)culturing showed that theγγ′F1:pFN complex fibrin matrix enhanced the proliferation of both HUVECs and primary human fibroblasts.HUVECs in the 3Dγγ′F1:pFN fibrin exhibited a starkly enhanced vascular morphogenesis while an apoptotic growth profile was observed in theγγF1+pFN fibrin.Relative toγγF1+pFN fibrin,mouse dermal wounds that were sealed byγγ′F1:pFN fibrin exhibited accelerated and enhanced healing.This study suggests that a 3D pFN presentation on a fibrin matrix promotes wound healing.Carlos Poblete Jara Ou Wang Thais Paulino do Prado Ayman Ismail Frank Marco Fabian Han Li Licio A.Velloso Mark A.Carlson William Burgess Yuguo Lei William H.Velander Eliana P.Araújo 2020Bioactive Materials2020,5,4:5
2Exosomes derived from differentiated human ADMSC with the Schwann cell phenotype modulate peripheral nerve-related cellular functions显示文摘Peripheral nerve regeneration remains a significant clinical challenge due to the unsatisfactory functional recovery and public health burden.Exosomes,especially those derived from mesenchymal stem cells(MSCs),are promising as potential cell-free therapeutics and gene therapy vehicles for promoting neural regeneration.In this study,we reported the differentiation of human adipose derived MSCs(hADMSCs)towards the Schwann cell(SC)phenotype(hADMSC-SCs)and then isolated exosomes from hADMSCs with and without differentiation(i.e.,dExo vs uExo).We assessed and compared the effects of uExo and dExo on antioxidative,angiogenic,anti-inflammatory,and axon growth promoting properties by using various peripheral nerve-related cells.Our results demonstrated that hADMSC-SCs secreted more neurotrophic factors and other growth factors,compared to hADMSCs without differentiation.The dExo isolated from hADMSC-SCs protected rat SCs from oxidative stress and enhanced HUVEC migration and angiogenesis.Compared to uExo,dExo also had improved performances in downregulating pro-inflammatory gene expressions and cytokine secretions and promoting axonal growth of sensory neurons differentiated from human induced pluripotent stem cells.Furthermore,microRNA(miRNA)sequencing analysis revealed that exosomes and their parent cells shared some similarities in their miRNA profiles and exosomes displayed a distinct miRNA signature.Many more miRNAs were identified in dExo than in uExo.Several upregulated miRNAs,like miRNA-132-3p and miRNA-199b-5p,were highly related to neuroprotection,anti-inflammation,and angiogenesis.The dExo can effectively modulate various peripheral nerve-related cellular functions and is promising for cell-free biological therapeutics to enhance neural regeneration.Bo Liu Yunfan Kong Wen Shi Mitchell Kuss Ke Liao Guoku Hu Peng Xiao Jagadesan Sankarasubramanian Chittibabu Guda Xinglong Wang Yuguo Lei Bin Duan 2022Bioactive Materials2022,7,8:3
3Dynamic study on water diffusivity of soil with super-absorbent polymer application显示文摘Yuguo Han Xinxiao Yu Peiling Yang Bo Li Lei Xu Chengzhi Wang 2013Environmental Earth Sciences2013,,1:1
4Maleic anhydride grafted Ihermoplastic elastomer as an interfacial modifier for polypropylene/polyamide 6 blends 显示文摘Ou Yuchun Lei Yuguo Fang Xiaoping 2004J Appl Polym Sci2004,91,3:1
5SRSF1通过调控DBF4B的可变剪接来阻断DNA损伤和促进肿瘤的形成显示文摘文章简介DBF4B是细胞周期S期促进激酶Cdc7的调控因子,与Cdc7激酶一起参与并调控DNA复制的起始与进程,在细胞周期中发挥重要的调控作用。本研究报道了细胞周期相关蛋白DBF4B剪接异构体及剪接调控因子SRSF1在结直肠癌发生发展中的调控作用。Linlin Chen Chunling Luo Lei Shen Yuguo Liu Qianqian Wang Chang Zhang Ruochen Guo Yanan Zhang Zhiqin Xie Ning Wei Wenwu Wu 韩军 冯英 2018科学新闻2018,0,4:0
6Selenium uptake and simultaneous catalysis of sulfite oxidation in ammonia-based desulfurization显示文摘Accelerating the(NH_4)_(2)SO_(3) oxidation gives rise to the reclaiming of byproduct, while there are secondary environmental risks from reduction of the coexisted selenium species by sulfite. In this study, a bi-functional Co-SBA-15-SH, were synthesized through Co impregnation and sulfhydryl(-SH) decoration, which can simultaneously uptake Se and accelerate sulfite oxidation efficiently. Meanwhile, the adsorption kinetics and migration mechanism of Se species were revealed through characterization and density functional calculations, with maximum adsorption capacity of 223 mg/g. The inhibition of Se~0 re-emission and poisonous effect of Se on sulfite oxidation was also investigated. Using the findings of this study, the ammonia desulfurization can be improved by enabling purification of the byproduct and lowering the toxicity of effluent by removing toxic pollutants.Qiangwei Li Yuguo Wang Lei Xing Tieyue Qi Lin Zhang Jie Liu Shihan Zhang Yongliang Ma Lidong Wang 2021Journal of Environmental Sciences2021,33,5:0
7Recent progresses of polymer crystallization studied by AFM显示文摘The crystallization of polymers has been one of the major topics in polymer physics. Spherulites are common crystalline structures observed in semi-crystalline polymers. Many studies[1-5] have been performed to investigate the detailed structures and formation mechanisms. It is generally accepted that the three-dimensional geometry of spherulites develops from a stack of lamellae. During the growth process, the stacked lamellae splay apart continually and branch occasionally[6.7]. However, there are many unanswered questions. For example, what is a pri-LUO Yanhong JIANG Yong JIN Xigao LI Lin LEI Yuguo CHAN Chiming 2002Chinese Science Bulletin2002,47,21:0
8Fabricating 3-dimensional human brown adipose microtissues for transplantation studies显示文摘Transplanting cell cultured brown adipocytes(BAs)represents a promising approach to prevent and treat obesity(OB)and its associated metabolic disorders,including type 2 diabetes mellitus(T2DM).However,transplanted BAs have a very low survival rate in vivo.The enzymatic dissociation during the harvest of fully differentiated BAs also loses significant cells.There is a critical need for novel methods that can avoid cell death during cell preparation,transplantation,and in vivo.Here,we reported that preparing BAs as injectable microtissues could overcome the problem.We found that 3D culture promoted BA differentiation and UCP-1 expression,and the optimal initial cell aggregate size was 100μm.The microtissues could be produced at large scales via 3D suspension assisted with a PEG hydrogel and could be cryopreserved.Fabricated microtissues could survive in vivo for long term.They alleviated body weight and fat gain and improved glucose tolerance and insulin sensitivity in high-fat diet(HFD)-induced OB and T2DM mice.Transplanted microtissues impacted multiple organs,secreted protein factors,and influenced the secretion of endogenous adipokines.To our best knowledge,this is the first report on fabricating human BA microtissues and showing their safety and efficacy in T2DM mice.The proposal of transplanting fabricated BA microtissues,the microtissue fabrication method,and the demonstration of efficacy in T2DM mice are all new.Our results show that engineered 3D human BA microtissues have considerable advantages in product scalability,storage,purity,safety,dosage,survival,and efficacy.Ou Wang Li Han Haishuang Lin Mingmei Tian Shuyang Zhang Bin Duan Soonkyu Chung Chi Zhang Xiaojun Lian Yong Wang Yuguo Lei 2023Bioactive Materials2023,,4:0
9Piceatannol attenuates streptozotocin-induced type 1 diabetes inmice显示文摘As a natural analog of resveratrol,piceatannol(Pic)exhibits good antioxidant and anti-inflammatory activities in different disease models.However,the role of Pic in type 1 diabetes mousemodel has not been reported yet.In this study,we investigated the in vivo effect of Pic in streptozotocin(STZ)-induced type 1 diabetic mice.Mice were injected with STZ to establish the type 1 diabetesmellitus(T1DM)model.After stable hyperglycemia was achieved,mice were then orally treated with Pic(40 mg/kg b.w.,i.g.)for 30 days.The results indicated that Pic supplementation efficiently alleviated the typical symptoms associated with T1DM,including body weight loss,polydipsia,hyperglycemia,and hypoinsulinemia.Pic treatment also improved the glucose tolerance of STZ-induced diabetic mice.In addition,Pic supplementation markedly decreased the expression of pro-inflammatory molecules TNF-αand IL-6,the expression of endoplasmic reticulum(ER)stress markers GRP78 and CHOP,and the level of oxidative stress in T1DM mice.Moreover,Pic administration also partly reversed the metabolic profiles of STZ-treated mice as detected by 1H Nuclear Magnetic Resonance(NMR)-based metabolomics.Our study suggested that the therapeutic potential of Pic in type 1 diabetes and the anti-diabetic effects of Pic may be associated with its activities to suppress oxidative stress,inflammation,and ER stress.MENGSHU ZHAO PINGSHI GAO LIANG TAO JINGJING WEN LEI WANG YUGUO YI YUXIN CHEN JUNSONG WANG XI XU JIANFA ZHANG DAN WENG 2020BIOCELL2020,44,3:0
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