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268篇 您的检索式:作者名="Yuji Chen"
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1A novel m6A reader Prrc2a controls oligodendroglial specification and myelination显示文摘While N6-methyladenosine (m6A), the most abundant internal modification in eukaryotic mRNA, is linked to cell differentiation and tissue development, the biological significance of m6A modification in mammalian glial development remains unknown. Here, we identify a novel m6A reader, Prrc2a (Proline rich coiled-coil 2A), which controls oligodendrocyte specification and myelination. Nestin-Cre-mediated knockout of Prrc2a induces significant hypomyelination, decreased lifespan, as well as locomotive and cognitive defects in a mouse model. Further analyses reveal that Prrc2a is involved in oligodendrocyte progenitor cells (OPCs) proliferation and oligodendrocyte fate determination. Accordingly, oligodendroglial-lineage specific deletion of Prrc2a causes a similar phenotype of Nestin-Cre-mediated deletion. Combining transcriptome-wide RNA-seq, m6A-RIP-seq and Prrc2a RIP-seq analysis, we find that Olig2 is a critical downstream target gene of Prrc2a in oligodendrocyte development. Furthermore, Prrc2a stabilizes Olig2 mRNA through binding to a consensus GGACU motif in the Olig2 CDS (coding sequence) in an m6A-dependent manner. Interestingly, we also find that the m6A demethylase, Fto, erases the m6A modification of Olig2 mRNA and promotes its degradation. Together, our results indicate that Prrc2a plays an important role in oligodendrocyte specification through functioning as a novel m6A reader. These findings suggest a new avenue for the development of therapeutic strategies for hypomyelination-related neurological diseases.Rong Wu Ang Li Baofa Sun Jian-Guang Sun Jinhua Zhang Ting Zhang Yusheng Chen Yujie Xiao Yuhao Gao Qingyang Zhang Jun Ma Xin Yang Yajin Liao Wei-Yi Lai Xiaolong Qi Shukun Wang Yousheng Shu Hai-Lin Wang Fengchao Wang Yun-Gui Yang Zengqiang Yuan 2019Cell Research2019,29,1:32
2Biomacromolecules as carriers in drug delivery and tissue engineering显示文摘Natural biomacromolecules have attracted increased attention as carriers in biomedicine in recent years because of their inherent biochemical and biophysical properties including renewability,nontoxicity, biocompatibility, biodegradability, long blood circulation time and targeting ability. Recent advances in our understanding of the biological functions of natural-origin biomacromolecules and the progress in the study of biological drug carriers indicate that such carriers may have advantages over synthetic material-based carriers in terms of half-life, stability, safety and ease of manufacture. In this review, we give a brief introduction to the biochemical properties of the widely used biomacromoleculebased carriers such as albumin, lipoproteins and polysaccharides. Then examples from the clinic and in recent laboratory development are summarized. Finally the current challenges and future prospects of present biological carriers are discussed.Yujie Zhang Tao Sun Chen Jiang 2018Acta Pharmaceutica Sinica B2018,8,1:28
3Clinicopathologic characteristics and prognosis of gastroenteropancreatic neuroendocrine neoplasms: a multicenter study in South China显示文摘Background: Gastroenteropancreatic neuroendocrine neoplasms(GEP-NENs) are a heterogeneous group of rare tumors. Many issues in terms of epidemiologic features, pathogenesis, and treatment of GEP-NENs are still under discussion. Our study aimed to analyze the clinicopathologic characteristics and prognosis of Chinese patients with GEP-NENs.Methods: Complete clinicopathologic data and survival information of 1183 patients with GEP-NENs treated between 2005 and 2015 were collected from five medical centers in Guangdong Province, China. Patient survival was estimated using the Kaplan–Meier method and analyzed using the log-rank test; prognostic factors were analyzed using the Cox proportional hazards model.Results: The most common tumor location was the rectum(37.4%), followed by the pancreas(28.1%), stomach(20.7%), small intestine(7.2%), appendix(3.4%), and colon(3.3%). After initial definitive diagnosis, 1016(85.9%) patients underwent surgery. The 1-, 3-, and 5-year overall survival(OS) rates for the entire cohort were 87.9%, 78.5%, and 72.8%, respectively. The 3-year OS rates of patients with G1, G2, and G3 tumors were 93.1%, 82.7%, and 43.1%, respectively(P < 0.001). The 3-year OS rates of patients with stage I, II, III, and IV tumors were 96.0%, 87.3%, 64.0%, and 46.8%, respectively(P < 0.001). Patients with distant metastasis who underwent palliative surgery had a longer survival than those who did not(P = 0.003). Similar survival benefits of palliative surgery were observed in patients with neuroendocrine tumor(P y, M category, and sur= 0.031) or neuroendocrine carcinoma(P gery were found to be independent prog= 0.046). In multivariate analysis, age, grade, N categornostic factors.Conclusions: Patients with GEP-NENs who are women, younger than 50 years old, have smaller tumor size, have lower tumor grade, have lower T/N/M category, and who undergo surgery can have potentially longer survival time. Our data showed that surgery can improve the prognosis of GEP-NEN patients with distant metastasis. However, randomized controlled trials need to be conducted to establish the optimal criteria for selecting patients to undergo surgery.Cheng Fang Wei Wang Yu Zhang Xingyu Feng Jian Sun Yujie Zeng Ye Chen Yong Li Minhu Chen Zhiwei Zhou Jie Chen 2017Chinese Journal of Cancer2017,36,10:23
4GSDMB promotes non-canonical pyroptosis by enhancing caspase-4 activity显示文摘Gasdermin B (GSDMB) has been reported to be associated with immune diseases in humans, but the detailed molecular mechanisms remain unsolved. The N-terminus of GSDMB by itself, unlike other gasdermin family proteins, does not induce cell death. Here, we show that GSDMB is highly expressed in the leukocytes of septic shock patients, which is associated with increased release of the gasdermin D (GSDMD) N-terminus. GSDMB expression and the accumulation of the N-terminal fragment of GSDMD are induced by the activation of the non-canonical pyroptosis pathway in a human monocyte cell line. The downregulation of GSDMB alleviates the cleavage of GSDMD and cell death. Consistently, the overexpression of GSDMB promotes GSDMD cleavage, accompanied by increased LDH release. We further found that GSDMB promotes caspase-4 activity, which is required for the cleavage of GSDMD in non-canonical pyroptosis, by directly binding to the CARD domain of caspase-4. Our study reveals a GSDMB-mediated novel regulatory mechanism for non-canonical pyroptosis and suggests a potential new strategy for the treatment of inflammatory diseases.Qin Chen Peiliang Shi Yufang Wang Dayuan Zou Xiuwen Wu Dingyu Wang Qiongyuan Hu Yujie Zou Zan Huang Jianan Ren Zhaoyu Lin Xiang Gao 2019Journal of Molecular Cell Biology2019,11,6:22
5Chemically exfoliated metallic MoS2 nanosheets: A promising supporting co-catalyst for enhancing the photocatalytic performance of TiO2 nanocrystals显示文摘电子洞分离是到完成有效光催化,合作催化剂的使用向成为了广泛地使用的策略的关键步。当设计划算的、高效的混合光催化剂时,尽管有巨大的努力和高贵金属合作催化剂的表明的功能,寻求高贵没有金属的合作催化剂将总是是目标。在这个工作,我们证明瞬间 < 潜水艇 class= “ a-plus-plus ” > 有 1T 阶段的 2 nanosheets (即,八面的阶段) 能与多重优点作为合作催化剂工作:(1 ) Noble-metal-free;(2 ) 为充电的高活动性运输;(3 ) 为 H 的活跃地点的高密度 < 潜水艇 class= “ a-plus-plus ” > 基础飞机上的 2 进化;(4 ) 好表演稳定性;(5 ) 高点亮透明性。是在两 photocatalytic 氢生产和玫瑰精 B 降级示威了,有 TiO 的发达混合结构<潜水艇class=“ a-plus-plus ”> 2 展出优秀性能,在到赤裸的 TiO 的鲜明对比<潜水艇class=“ a-plus-plus ”>有2H瞬间的 2 和混合对应物<潜水艇class=“ a-plus-plus ”> 2 。Song Bai Limin Wang Xiaoyi Chen Junteng Du Yujie Xiong 2015Nano Research2015,8,1:19
6Substance P-modified human serum albumin nanoparticles loaded with paclitaxel for targeted therapy of glioma显示文摘The blood–brain barrier(BBB) and the poor ability of many drugs to cross that barrier greatly limits the efficacy of chemotherapies for glioblastoma multiforme(GBM). The present study exploits albumin as drug delivery vehicle to promote the chemotherapeutic efficacy of paclitaxel(PTX) by improving the stability and targeting efficiency of PTX/albumin nanoparticles(NPs). Here we characterize PTX-loaded human serum albumin(HSA) NPs stabilized with intramolecular disulfide bonds and modified with substance P(SP) peptide as the targeting ligand. The fabricated SP-HSA-PTX NPs exhibited satisfactory drug-loading content(7.89%) and entrapment efficiency(85.7%) with a spherical structure(about 150 nm) and zeta potential of -12.0 mV. The in vitro drug release from SP-HSA-PTX NPs occurred in a redox-responsive manner. Due to the targeting effect of the SP peptide, cellular uptake of SP-HSA-PTX NPs into brain capillary endothelial cells(BCECs) and U87 cells was greatly improved.The low IC_(50), prolonged survival period and the obvious pro-apoptotic effect shown by TUNEL analysis all demonstrated that the fabricated SP-HSA-PTX NPs showed a satisfactory anti-tumor effect and could serve as a novel strategy for GBM treatment.Chunhui Ruan Lisha Liu Yifei Lu Yu Zhang Xi He Xinli Chen Yujie Zhang Qinjun Chen Qin Guo Tao Sun Chen Jiang 2018Acta Pharmaceutica Sinica B2018,8,1:19
7Blocking FSH inhibits hepatic cholesterol biosynthesis and reduces serum cholesterol显示文摘Menopause is associated with dyslipidemia and an increased risk of cardio-cerebrovascular disease.The classic view assumes that the underlying mechanism of dyslipidemia is attributed to an insufficiency of estrogen.In addition to a decrease in estrogen, circulating follicle-stimulating hormone (FSH)levels become elevated at menopause.In this study,we find that blocking FSH reduces serum cholesterol via inhibiting hepatic cholesterol biosynthesis.First,epidemiological results show that the serum FSH levels are positively correlated with the serum total cholesterol levels,even after adjustment by considering the effects of serum estrogen,in addition,the prevalence of hypercholesterolemia is significantly higher in peri-menopausal women than that in premenopausal women.Furthermore,we generated a mouse model of FSH elevation by intraperitoneally injecting exogenous FSH into ovariectomized (OVX)mice,in which a normal level of estrogen (E2)was maintained by exogenous supplementation. Consistently,the results indicate that FSH,independent of estrogen,increases the serum cholesterol level in this mouse model. Moreover,blocking FSH signaling by anti-FSHβ antibody or ablating the FSH receptor (FSHR)gene could effectively prevent hypercholesterolemia induced by FSH injection or high-cholesterol diet feeding.Mechanistically,FSH,via binding to hepatic FSHRs, activates the Gi2α/β-arrestin-2/Akt pathway and subsequently inhibits the binding of FoxO1 with the SREBP-2 promoter,thus preventing FoxO1 from repressing SREBP-2 gene transcription.This effect,in turn,results in the upregulation of SREBP-2,which drives HMGCR nascent transcription and de novo cholesterol biosynthesis,leading to the increase of cholesterol accumulation.This study uncovers that blocking FSH signaling might be a new strategy for treating hypercholesterolemia during menopause, particularly for women in peri-menopause characterized by FSH elevation only.Yanjing Guo Meng Zhao Tao Bo Shizhan Ma Zhongshang Yuan Wenbin Chen Zhao He Xu Hou Jun Liu Zhenhai Zhang Qiang Zhu Qiangxiu Wang Xiaoyan Lin Zhongli Yang Min Cui Lu Liu Yujie Li Chunxiao Yu Xiaoyi Qi Qian Wang Haiqing Zhang Qingbo Guan Lifang Zhao Shimeng Xuan Huili Yan Yanliang Lin Li Wang Qihang Li Yongfeng Song Ling Gao Jiajun Zhao 2019Cell Research2019,29,2:16
8Reponses and sensitivities of maize phenology to climate change from 1981 to 2009 in Henan Province, China显示文摘与全球温暖,响应气候变化的庄稼 phenological 移动成为了一个热研究话题。基于长期的观察 agro 气象学的 phenological 数据(1981-2009 ) 和气象学的数据,我们时间、空间的分析的份量上变在玉米物候学和他们的敏感给因素用气候趋势改变的气候调音率和敏感分析方法。结果显示播种朋友显著地被耽搁,延期趋势率是 9.0 d ?????????????????? ┴吗??LIU Yujie QIN Ya GE Quansheng DAI Junhu CHEN Qiaomin 2017Journal of Geographical Sciences2017,27,9:14
9Quantitative deterministic versus probability analyses based on a safety margin criterion显示文摘This paper proposes a new criterion called the ratio of safety margin(RSM)for use in the areas of the global factor of safety,reliability and limit states analyses with reference to their respective allowable criteria.An equation for calculating RSM based on the reliability index is formulated.Efforts for proving the applicability of this criterion include a theoretical demonstration in a simple one-variable case;an investigation on a test problem involving two random variables,followed by a slope stability study on a 156 m high embankment dam and an illustrative example presented in a EuroCode 7 guidebook.Calculation of the ratios of safety margin in the three areas provides a quantitative way to accommodate the analytical results within the same theoretical framework and makes the outcomes mutually comparable and supportive,which is much more enlightening than that would be the case by considering only one of them.Calculating RSMs for reliability and limit states methods has also helped solve the key issue concerning the uniqueness of the partial factors calibrated from a particular‘target case’.CHEN ZuYu CHEN LiHong XU JiaCheng SUN Ping WU Chao WANG YuJie 2014Science China(Technological Sciences)2014,57,10:12
10Advanced fabrication for electrospun three-dimensional nanofiber aerogels and scaffolds显示文摘Electrospinning is a versatile strategy for creating nanofiber materials with various structures,which has broad application for a myriad of areas ranging from tissue engineering,energy harvesting,filtration and has become one of the most important academic and technical activities in the field of material science in recent years.In addition to playing a significant role in the construction of two-dimensional(2D)nanomaterials,electrospinning holds great promise as a robust method for producing three-dimensional(3D)aerogels and scaffolds.This article reviews and summarizes the recent advanced methods for fabricating electrospun three-dimensional nanofiber aerogels and scaffolds,including gas foaming,direct electrospinning of 3D nanofibrous scaffold,short nanofibers assembling into 3D aerogels/scaffolds,3D printing,electrospray,origami and cell sheet engineering,centrifugal electrospinning,and other methods.Besides,intriguing formation process,crosslinking pathway,properties,and applications of 3D aerogels and scaffolds are also introduced.Taken together,these aerogels and scaffolds with various excellent features present tremendous potential in various fields.Yujie Chen Muhammad Shafiq Mingyue Liu Yosry Morsi Xiumei Mo 2020Bioactive Materials2020,5,4:12
11Large-field high-resolution two-photon digital scanned light-sheet microscopy显示文摘Weijian Zong Jia Zhao Xuanyang Chen Yuan Lin Huixia Ren Yunfeng Zhang Ming Fan Zhuan Zhou Heping Cheng Yujie Sun Liangyi Chen 2015Cell Research2015,25,2:12
12Spatiotemporal differentiation of changes in wheat phenology in China under climate change from 1981 to 2010显示文摘Phenology is a reliable biological indicator for reflecting climate change. An examination of changes in crop phenology and the mechanisms driving them is critical for guiding regional agricultural activities in attempts to adapt to climate change. Due to a lack of records based on continuous long-term observation, studies on changes in multiple consecutive phenological stages throughout a whole growing season on a national scale are rarely found, especially with regard to the spatiotemporal differentiation of phenological changes. Using a long-term dataset(1981-2010) of wheat phenology collected from 48 agro-meteorological stations in China, we qualified the spatiotemporal changes of 10 phenological stages as well as the length of wheat growth phases. Results showed that climate and wheat phenology changed significantly during the growing seasons from 1981 to 2010. On average, on a national scale, dates of sowing(0.19 d a-1), emergence(0.06 d a-1), trefoil(0.05 d a-1), and milk ripe(0.06 d a-1) showed a delaying trend, whereas dates of tillering(-0.02 d a-1), jointing(-0.15 d a-1),booting(-0.21 d a-1), heading(-0.17 d a-1), anthesis(-0.19 d a-1), and maturity(-0.10 d a-1) showed an advancing trend.Furthermore, the vegetative growth phase and growing season were shortened by 0.23 and 0.29 d a-1, respectively, whereas the reproductive growth phase was lengthened by 0.06 d a-1. Trends in dates of phenological stages or length of growing phases varied across wheat-planting regions. Moreover, spatiotemporal differentiation of sensitivity in growing season length(GSL) to variations in climatic factors during the growing season between spring and winter wheat were remarkable. The GSL of spring(winter) wheat decreased(increased) with an increase in average temperature during the growing season. In all wheat-planting regions, the GSL increased with the increasing of total precipitation and sunshine duration during the growing season. In particular, the sensitivity of GSL to precipitation for spring wheat was weaker than for winter wheat, while the sensitivity of GSL to sunshine duration for spring wheat was stronger than for winter wheat. Recognition of the spatiotemporal differentiation of phenological changes and their response to various climatic factors will provide scientific support for decision-making in agricultural production.Yujie LIU Qiaomin CHEN Quansheng GE Junhu DAI 2018Science China Earth Sciences2018,61,8:10
13PandaX: a liquid xenon dark matter experiment at CJPL显示文摘PandaX is a large liquid-xenon detector experiment usable for direct dark-matter detection and 136Xe double-beta decay search.The central vessel was designed to accommodate a staged target volume increase from initially 120 kg(stage I)to 0.5 t(stage II)and eventually to a multi-ton scale.The experiment is located in the Jinping Deep-Underground Laboratory in Sichuan,China.The detector operates in dual-phase mode,allowing detection of both prompt scintillation,and ionization charge through proportional scintillation.In this paper a detailed description of the stage I detector design and performance as well as results established during the commissioning phase are presented.CAO XiGuang CHEN Xun CHEN YunHua CUI XiangYi FANG DeQing FU ChangBo GIBONI Karl L. GONG HaoWei GUO GuoDong HE Ming HU Jie HUANG XingTao JI XiangDong JU YongLin LI ShaoLi LIN Qing LIU HuaXuan LIU JiangLai LIU Xiang LORENZON Wolfgang MA YuGang MAO YaJun NI KaiXuan PUSHKIN Kirill REN XiangXiang SCHUBNELL Michael SHEN ManBing SHI YuJie STEPHENSON Scott TAN AnDi TARLé Greg WANG HongWei WANG JiMing WANG Meng WANG XuMing WANG Zhou WEI YueHuan WU ShiYong XIAO MengJiao XIAO Xiang XIE PengWei YE Tao YOU YingHui ZEN XiongHui ZHANG Hua ZHANG Tao ZHAO HaiYing ZHAO Li ZHOU XiaoPeng ZHU ZhongHua 2014Science China(Physics,Mechanics & Astronomy)2014,57,8:9
14Cancer-associated fibroblasts in breast cancer:Challenges and opportunities显示文摘The tumor microenvironment is proposed to contribute substantially to the progression of cancers,including breast cancer.Cancer-associated fibroblasts(CAFs)are the most abundant components of the tumor microenvironment.Studies have revealed that CAFs in breast cancer originate from several types of cells and promote breast cancer malignancy by secreting factors,generating exosomes,releasing nutrients,reshaping the extracellular matrix,and suppressing the function of immune cells.CAFs are also becoming therapeutic targets for breast cancer due to their specific distribution in tumors and their unique biomarkers.Agents interrupting the effect of CAFs on surrounding cells have been developed and applied in clinical trials.Here,we reviewed studies examining the heterogeneity of CAFs in breast cancer and expression patterns of CAF markers in different subtypes of breast cancer.We hope that summarizing CAFrelated studies from a historical perspective will help to accelerate the development of CAF-targeted therapeutic strategies for breast cancer.Dengdi Hu Zhaoqing Li Bin Zheng Xixi Lin Yuehong Pan Peirong Gong Wenying Zhuo Yujie Hu Cong Chen Lini Chen Jichun Zhou Linbo Wang 2022Cancer Communications2022,42,5:9
15In vitro inhibitory and pro-apoptotic effect of Stellera Chamaejasme LExtract on human lung cancer cell line NCI-H157显示文摘OBJECTIVE:To investigate the inhibitory and pro-apoptotic effect of Stellera Chamaejasme L extract(ESC) in vitro.METHODS:ESC was first extracted with ethanol,and then washed using a polyamide column with 60% ethanol.ESC was then decompressively recycled and vacuum dried at room temperature to obtain active fractions.Subsequently,the cytotoxic and apoptotic effects of ESC on NCI-H157 human lung cancer cells were determined.RESULTS:The results showed that ESC was rich in isomers of Chamaejasminor,neochamaejasmine and Sikokianin.ESC had significant cytotoxicity against NCI-H157 cells,with an IC 50 of approximately 18.50 μg.mL-1.ESC caused significant increase in total apoptotic rate,the activity of caspase 3 and 8,and Fas protein expression(P<0.05).CONCLUSION:The inhibitory effect of ESC on NCI-H157 tumor cells might partly be attributed to its apoptotic induction through activation of the Fas death receptor pathway.Xiaoni Liu Yujie Li Qing Yang Ying Chen Xiaogang Weng Yiwei Wang Ning Li Xiaoxin Zhu 2012Journal of Traditional Chinese Medicine2012,32,3:8
16Biomimetic injectable hydrogel microspheres with enhanced lubrication and controllable drug release for the treatment of osteoarthritis显示文摘The occurrence of osteoarthritis(OA)is highly associated with the reduced lubrication property of the joint,where a progressive and irreversible damage of the articular cartilage and consecutive inflammatory response dominate the mechanism.In this study,bioinspired by the super-lubrication property of cartilage and catecholamine chemistry of mussel,we successfully developed injectable hydrogel microspheres with enhanced lubrication and controllable drug release for OA treatment.Particularly,the lubricating microspheres(GelMA@DMA-MPC)were fabricated by dip coating a self-adhesive polymer(DMA-MPC,synthesized by free radical copolymerization)on superficial surface of photo-crosslinked methacrylate gelatin hydrogel microspheres(GelMA,prepared via microfluidic technology),and encapsulated with an anti-inflammatory drug of diclofenac sodium(DS)to achieve the dual-functional performance.The tribological test and drug release test showed the enhanced lubrication and sustained drug release of the GelMA@DMA-MPC microspheres.In addition,the functionalized microspheres were intra-articularly injected into the rat knee joint with an OA model,and the biological tests including qRT-PCR,immunofluorescence staining assay,X-ray radiography and histological staining assay all revealed that the biocompatible microspheres provided significant therapeutic effect against the development of OA.In summary,the injectable hydrogel microspheres developed herein greatly improved lubrication and achieved sustained local drug release,therefore representing a facile and promising technique for the treatment of OA.Ying Han Jielai Yang Weiwei Zhao Haimang Wang Yulong Sun Yuji Chen Jing Luo Lianfu Deng Xiangyang Xu Wenguo Cui Hongyu Zhang 2021Bioactive Materials2021,6,10:8
17Hierarchically porous nitrogen-doped carbon as cathode for lithium–sulfur batteries显示文摘Porous nitrogen-doped carbon is an especially promising material energy storage due to its excellent conductivity, stable physicochemical properties, easy processability, controllable porosity and low price.Herein, we reported a novel well-designed hierarchically porous nitrogen-doped carbon(HPNC) via a combination of salt template(ZnCl_2) and hard template(SiO_2) as sulfur host for lithium–sulfur batteries. The low-melting ZnCl_2 is boiled off and leaves behind micropores and small size mesopores during pyrolysis process, while the silica spheres are removed by acid leaching to generate interconnected 3D network of macropores. The HPNC-S electrode exhibits an initial specific capacity of 1355 mAh g^(–1) at 0.1 C(1 C = 1675 m Ah g^(–1)), a high-rate capability of 623 m Ah g^(–1) at 2 C, and a small decay of 0.13% per cycle over 300 cycles at 0.2 C. This excellent rate capability and remarkable long-term cyclability of the HPNC-S electrode are attributed to its hierarchical porous structures for confining the soluble lithium polysulfide as well as the nitrogen doping for high absorbability of lithium polysulfide.Rui Wu Siguo Chen Jianghai Deng Xun Huang Yujie Song Ruiyi Gan Xiaoju Wan Zidong Wei 2018Journal of Energy Chemistry2018,27,6:8
18Scalable volumetric imaging for ultrahigh-speed brain mapping at synaptic resolution显示文摘The speed of high-resolution optical imaging has been a rate-limiting factor for meso-scale mapping of brain structures and functional circuits,which is of fundamental importance for neuroscience research.Here,we describe a new microscopy method of Volumetric Imaging with Synchronized on-the-fly-scan and Readout(VISo R)for high-throughput,high-quality brain mapping.Combining synchronized scanning beam illumination and oblique imaging over cleared tissue sections in smooth motion,the VISo R system effectively eliminates motion blur to obtain undistorted images.By continuously imaging moving samples without stopping,the system achieves high-speed 3D image acquisition of an entire mouse brain within1.5 hours,at a resolution capable of visualizing synaptic spines.A pipeline is developed for sample preparation,imaging,3D image reconstruction and quantification.Our approach is compatible with immunofluorescence methods,enabling flexible cell-type specific brain mapping and is readily scalable for large biological samples such as primate brains.Using this system,we examined behaviorally relevant whole-brain neuronal activation in 16 c-Fos-sh EGFP mice under resting or forced swimming conditions.Our results indicate the involvement of multiple subcortical areas in stress response.Intriguingly,neuronal activation in these areas exhibits striking individual variability among different animals,suggesting the necessity of sufficient cohort size for such studies.Hao Wang Qingyuan Zhu Lufeng Ding Yan Shen Chao-Yu Yang Fang Xu Chang Shu Yujie Guo Zhiwei Xiong Qinghong Shan Fan Jia Peng Su Qian-Ru Yang Bing Li Yuxiao Cheng Xiaobin He Xi Chen Feng Wu Jiang-Ning Zhou Fuqiang Xu Hua Han Pak-Ming Lau Guo-Qiang Bi 2019National Science Review2019,6,5:7
19Homozygous loss-of-function mutations in FSIP2 cause male infertility with asthenoteratospermia显示文摘Male infertility, as a major issue of human reproduction health, prevents successful natural conception. Asthenoteratospermia mainly presents one or multiple anomalies in head, neck and tail of spermatozoa, and impairs sperm function and motility (Coutton et al., 2015). Recurrent abnormalities of the fibrous sheath lead to multiple morphological abnormaliries of the sperm flagella (MMAF), which is a quite frequent type of asthenoteratospermia in male infertility (Chemes et al., 1987;Ben Khelifa et al, 2014).Wangjie Liu Huan Wu Li Wang Xiaoyu Yang Chunyu Liu Xiaojin He Weiyu Li Jiajia Wang Yujie Chen Hongyan Wang Yang Gao Shuyan Tang Shenmin Yang Li Jin Feng Zhang Yunxi Cao 2019Journal of Genetics and Genomics2019,46,1:7
20Neuronal Death Mechanisms and Therapeutic Strategy in Ischemic Stroke显示文摘Ischemic stroke caused by intracranial vascular occlusion has become increasingly prevalent with considerable mortality and disability,which gravely burdens the global economy.Current relatively effective clinical treatments are limited to intravenous alteplase and thrombectomy.Even so,patients still benefit little due to the short therapeutic window and the risk of ischemia/reperfusion injury.It is therefore urgent to figure out the neuronal death mechanisms following ischemic stroke in order to develop new neuroprotective strategies.Regarding the pathogenesis,multiple pathological events trigger the activation of cell death pathways.Particular attention should be devoted to excitotoxicity,oxidative stress,and inflammatory responses.Thus,in this article,we first review the principal mechanisms underlying neuronal death mediated by these significant events,such as intrinsic and extrinsic apoptosis,ferroptosis,parthanatos,pyroptosis,necroptosis,and autophagic cell death.Then,we further discuss the possibility of interventions targeting these pathological events and summarize the present pharmacological achievements.Rui Mao Ningning Zong Yujie Hu Ying Chen Yun Xu 2022Neuroscience Bulletin2022,38,10:6
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