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The mini player with diverse functions:extracellular vesicles in cell biology,disease,and therapeutics

Protein & Cell 2022年第9期13卷 631-654页

作者： Abhimanyu Thakur Xiaoshan Ke Ya-Wen Chen Pedram Motallebnejad Kui Zhang qizhou lian Huanhuan Joyce Chen The Pritzker School of Molecular Engineering The University of ChicagoChicagoIllinoisUSA The Ben May Department for Cancer Research The University of ChicagoChicagoIllinoisUSA Division of Pulmonary Critical Care and Sleep MedicineDepartment of MedicineKeck School of MedicineHastings Center for Pulmonary ResearchUniversity of Southern CaliforniaLos AngelesCA 90089USA Department of Stem Cell Biology and Regenerative Biology Keck School of MedicineUniversity of Southern CaliforniaLos AngelesCA 90089USA Department of Medicine Li Ka Shing Faculty of MedicineThe University of Hong KongPok Fu LamHong Kong Prenatal Diagnostic Center and Cord Blood Bank Guangzhou Women and Children’s Medical CenterGuangzhou Medical UniversityGuangzhouChina HKUMed Laboratory of Cellular Therapeutics the University of Hong KongPok Fu LamHong Kong

Extracellular vesicles(EVs)are tiny biological nanovesicles ranging from approximately 30–1000 nm in diameter that are released into the extracellular matrix of most cell types and in *** classification of EVs includes exosomes,microvesicles,and apoptotic bodies,dependent on various factors such as size,markers,and biogenesis *** transition of EV relevance from that of being assumed as a trash bag to be a key player in critical physiological and pathological conditions has been revolutionary in many *** have been recently revealed to play a crucial role in stem cell biology and cancer progression via intercellular communication,contributing to organ development and the progression of *** review focuses on the significant research progress made so far in the role of the crosstalk between EVs and stem cells and their niche,and cellular communication among different germ layers in developmental *** addition,it discusses the role of EVs in cancer progression and their application as therapeutic agents or drug delivery *** such discoveries have been facilitated by tremendous technological advancements in EV-associated research,especially the microfluidics *** pros and cons in the context of characterization of EVs are also extensively discussed in this *** review also deliberates the role of EVs in normal cell processes and disease conditions,and their application as a diagnostic and therapeutic ***,we propose future perspectives for EV-related research in stem cell and cancer biology.

关键词： extracellular vesicles exosomes stem cells cancer exosomal communication exosomal therapeutics

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Fe65-engineered neuronal exosomes encapsulating corynoxine-B ameliorate cognition and pathology of Alzheimer’s disease

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Signal Transduction and Targeted Therapy 2023年第11期8卷 5481-5494页

作者： Ashok Iyaswamy Abhimanyu Thakur Xin-Jie Guan Senthilkumar Krishnamoorthi Tsz Yan Fung Kejia Lu Isha Gaurav Zhijun Yang Cheng-Fu Su Kwok-Fai Lau Kui Zhang Roy Chun-Laam Ng qizhou lian King-Ho Cheung Keqiang Ye Huanhuan Joyce Chen Min Li Mr.&Mrs.Ko Chi-Ming Centre for Parkinson’s Disease Research School of Chinese MedicineHong Kong Baptist UniversityHong Kong SARChina Pritzker School of Molecular Engineering The University of ChicagoChicagoILUSA Ben May Department for Cancer Research The University of ChicagoChicagoILUSA School of Chinese Medicine Hong Kong Baptist UniversityHong Kong SARChina School of Life Sciences The Chinese University of Hong KongHong Kong SARChina Division of Neuroscience School of Biological SciencesFaculty of BiologyMedicine and HealthManchester Academic Health Science CentreUniversity of ManchesterManchesterUnited Kingdom Department of Medicine Li Ka Shing Faculty of MedicineThe University of Hong KongPok Fu LamHong Kong SARChina Prenatal Diagnostic Center and Cord Blood Bank Guangzhou Women and Children’s Medical CenterGuangzhou Medical UniversityGuangzhouChina HKUMed Laboratory of Cellular Therapeutics the University of Hong KongPok Fu LamHong Kong SARChina Faculty of Life and Health Sciences Shenzhen Institutes of Advanced TechnologyChinese Academy of SciencesShenzhenChina

Alzheimer’s disease(AD)is a neurodegenerative disorder characterized by the predominant impairment of neurons in the hippocampus and the formation of amyloid plaques,hyperphosphorylated tau protein,and neurofibrillary tangles in the *** overexpression of amyloid-βprecursor protein(APP)in an AD brain results in the binding of APP intracellular domain(AICD)to Fe65 protein via the C-terminal Fe65-PTB2 interaction,which then triggers the secretion of amyloid-βand the consequent pathogenesis of ***,targeting the interaction between APP and Fe65 can offer a promising therapeutic approach for ***,exosome,a type of extracellular vesicle with diameter around 30–200 nm,has gained much attention as a potential delivery tool for brain diseases,including AD,due to their ability to cross the blood–brain barrier,their efficient uptake by autologous cells,and their ability to be surface-modified with target-specific receptor ***,the engineering of hippocampus neuron cell-derived exosomes to overexpress Fe65,enabled the development of a novel exosome-based targeted drug delivery system,which carried Corynoxine-B(Cory-B,an autophagy inducer)to the APP overexpressed-neuron cells in the brain of AD *** Fe65-engineered HT22 hippocampus neuron cell-derived exosomes(Fe65-EXO)loaded with Cory-B(Fe65-EXO-Cory-B)hijacked the signaling and blocked the natural interaction between Fe65 and APP,enabling APP-targeted delivery of ***,Fe65-EXO-Cory-B induced autophagy in APP-expressing neuronal cells,leading to amelioration of the cognitive decline and pathogenesis in AD mice,demonstrating the potential of Fe65-EXO-Cory-B as an effective therapeutic intervention for AD.

关键词： Alzheimer gained loaded

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横观各向同性复合材料激光超声检测的数值模拟

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光电子．激光 2022年第4期33卷 443-448页

作者：郭珊珊陈友兴吴其洲赵霞连亚容中北大学信息与通信工程学院山西太原030051

为了分析横观各向同性复合材料的内部材料属性,结合激光超声理论,使用仿真软件Comsol Multiphysics建立了复合材料在激光热弹下激发出超声波的等效模型,通过设置完美匹配层、低反射边界等方法消除了边界回波。采用有限元法模拟了横观各... 详细信息

为了分析横观各向同性复合材料的内部材料属性,结合激光超声理论,使用仿真软件Comsol Multiphysics建立了复合材料在激光热弹下激发出超声波的等效模型,通过设置完美匹配层、低反射边界等方法消除了边界回波。采用有限元法模拟了横观各向同性材料中激发超声波的物理过程,对缺陷回波信号进行了时域分析。结果表明:平板厚度的增加会使超声波逐渐转变为高阶模态,且随着平板厚度的增加,模态的截止频率会逐渐降低,同时在横观各向同性复合材料中传播的超声波将逐渐失去Lamb波的特征,转而表现出表面波特征,将Lamb波向表面波转化激发出Rayleigh波。本次模拟为进一步研究复杂介质中超声波的产生和缺陷定位奠定了基础。

关键词：激光超声检测横观各向同性材料缺陷检测数值模拟

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