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| 1 | Molecular basis of Spns2-facilitated sphingosine-1-phosphate transport显示文摘Dear Editor,As one of the critical sphingolipid metabolites in eukaryotes,sphingosine-1-phosphate(S1P)acts as a bioactive lipid mediator in the immune and vascular systems.S1P prompts its physiological roles through two mechanisms,binding to its intracellular targets or extracellular secretion.Intracellular S1P promotes cellular proliferation,whereas plasma S1P facilitates immune cell trafficking,regulates angiogenesis,and helps to maintain vascular integrity.1 Due to the amphipathic property,S1P cannot diffuse freely but has to be transported across the cell membrane through active transport.1 In the past two decades,several S1P transporters have been identified,including two major facilitator superfamily(MFS)members:Spinster homolog 2(Spns2)and Mfsd2b,and some ATP-binding cassette family transporters.Among these transporters,Spns2 is the first identified and the most extensively studied.2 Here,we reported two cryo-electron microscopy(EM)structures of human Spns2 in inward-open conformations bound to S1P or inhibitor 16d. | Bin Pang Leiye Yu Tong Li Haizhan Jiao Xiaomei Wu Jinxin Wang Ruiping He Yurou Zhang Juan Wang Hongli Hu Wei Dai Li Chen Ruobing Ren | 2024 | Cell Research2024，34，2： | 0 |
| 2 | Structural and Kinetics Understanding of Support Effects in Pd-Catalyzed Semi-Hydrogenation of Acetylene显示文摘In this study,the support effects on the Pd-catalyzed semi-hydrogenation of acetylene have been investigated from the structural and kinetic perspectives.According to the results of kinetic analysis and X-ray photoelectron spectroscopy,hydrogen temperature-programmed reduction,temperature-programmed hydride decomposition,and in situ X-ray diffraction measurements,using carbon nanotubes as support for Pd nanocatalysts with various sizes instead of a-Al_(2)O_(3) decreases the Pd^(0)3d binding energy and suppresses the formation of undesirable palladium hydride species,thus increasing the ethylene yield.Furthermore,X-ray absorption spectroscopy,high-resolution transmission electron microscopy,and C_(2)H_(4) temperature-programmed desorption studies combined with density-functional theory calculations reveal the existence of a unique Pd local environment,containing subsurface carbon atoms,that produces positive geometric effects on the acetylene conversion reaction.Therefore,tailoring the Pd local environment and electronic properties represents an effective strategy for the fabrication and design of highly active and selective Pd semi-hydrogenation catalysts. | Yueqiang Cao Xiaohu Ge Yurou Li Rui Si Zhijun Sui Jinghong Zhou Xuezhi Duan Xinggui Zhou | 2021 | Engineering2021，7，1： | 0 |
| 3 | Phyllanthi Fructus:A modal medicinal and food homologous item in quality evaluation显示文摘Phyllanthi Fructus is a highly unique medicine and food homologous item,which exhibits distinctive flavor,notable nutritional value,and abundant pharmacological activity.It has enormous potential in the creation of health products and pharmaceuticals.However,due to the unique laws of quality formation and transfer of Phyllanthi Fructus,its appearance,shape,chemical compositions,nutrients,and sensory flavors are frequently greatly influenced by botanical resources,the processing and storage conditions.As a result,the current quality evaluation model is difficult to meet the needs of Phyllanthi Fructus as a medicine and food homologous item in the development of diversified products.This paper constructs the hierarchical utilization mode of Phyllanthi Fructus based on its unique quality formation and transmission laws,explores the quality evaluation model for food-oriented use and medicinal-oriented use,respectively,and systematically describes the quality evaluation idea under diversified application scenarios.This paper aims to serve as a reference for the construction of a quality evaluation model suitable for the medicine and food homologous item of Phyllanthi Fructus. | Gefei Li Yurou Jiang Dingkun Zhang Li Han Taigang Mo Sanhu Fan Haozhou Huang Junzhi Lin | 2023 | Chinese Herbal Medicines2023，15，3： | 0 |
| 4 | Characterization of lipid-based nanomedicines at the single-particle level显示文摘Lipid-based nanomedicines(LBNMs),including liposomes,lipid nanoparticles(LNPs)and extracellular vesicles(EVs),are recognized as one of the most clinically acceptable nano-formulations.However,the bench-to-bedside translation efficiency is far from satisfactory,mainly due to the lack of in-depth understanding of their physical and biochemical attributes at the single-particle level.In this review,we first give a brief introduction of LBNMs,highlighting some milestones and related scientific and clinical achievements in the past several decades,as well as the grand challenges in the characterization of LBNMs.Next,we present an overview of each category of LB-NMs as well as the core properties that largely dictate their biological characteristics and clinical performance,such as size distribution,particle concentration,morphology,drug encapsulation and surface properties.Then,the recent applications of several analytical techniques including electron microscopy,atomic force microscopy,fluorescence microscopy,Raman microscopy,nanoparticle tracking analysis,tunable resistive pulse sensing and flow cytometry on the single-particle characterization of LBNMs are thoroughly discussed.Particularly,the com-parative advantages of the newly developed nano-flow cytometry that enables quantitative analysis of both the physical and biochemical characteristics of LBNMs smaller than 40 nm with high throughput and statistical ro-bustness are emphasized.The overall aim of this review article is to illustrate the importance,challenges and achievements associated with single-particle characterization of LBNMs. | Chaoxiang Chen Chen Chen Yurou Li Ruilan Gu Xiaomei Yan | 2023 | Fundamental Research2023，3，4： | 0 |
| 5 | Corrigendum to“Structural and Kinetics Understanding of Support Effects in Pd-Catalyzed Semi-Hydrogenation of Acetylene”[Engineering 7(2021)103–110]显示文摘 | Yueqiang Cao Xiaohu Ge Yurou Li Rui Si Zhijun Sui Jinghong Zhou Xuezhi Duan | 2021 | Engineering2021，7，5： | 0 |
| 6 | Detection and quantitative analysis of tumor-associated tertiary lymphoid structures显示文摘Tumor-associated tertiary lymphoid structures(TLSs)are ectopic lymphoid formations within tumor tissue,with mainly B and T cell populations forming the organic aggregates.The presence of TLSs in tumors has been strongly associated with patient responsiveness to immunotherapy regimens and improving tumor prognosis.Researchers have been motivated to actively explore TLSs due to their bright clinical application prospects.Various studies have attempted to decipher TLSs regarding their formation mechanism,structural composition,induction generation,predictive markers,and clinical utilization.Meanwhile,the scientific approaches to qualitative and quantitative descriptions are crucial for TLS studies.In terms of detection,hematoxylin and eosin(H&E),multiplex immunohistochemistry(mIHC),multiplex immunofluorescence(mIF),and 12-chemokine gene signature have been the top approved methods.However,no standard methods exist for the quantitative analysis of TLSs,such as absolute TLS count,analysis of TLS constituent cells,structural features,TLS spatial location,density,and maturity.This study reviews the latest research progress on TLS detection and quantification,proposes new directions for TLS assessment,and addresses issues for the quantitative application of TLSs in the clinic. | Man YANG Yurou CHE Kezhen LI Zengyi FANG Simin LI Mei WANG Yiyao ZHANG Zhu XU Liping LUO Chuan WU Xin LAI Weidong WANG | 2023 | Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)2023，24，9： | 0 |
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