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The complex roles of m^(6)A modifications in neural stem cell proliferation, differentiation, and self-renewal and implications for memory and neurodegenerative diseases

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Neural Regeneration Research 2025年第6期20卷 1582-1598页

作者： Yanxi li Jing Xue Yuejia Ma Ke Ye Xue Zhao Fangliang Ge Feifei Zheng Lulu liu Xu Gao Dayong Wang Qing xia Department of Biochemistry and Molecular Biology College of Basic Medical SciencesHarbin Medical UniversityHarbinHeilongjiang ProvinceChina College of Basic Medical Sciences Harbin Medical UniversityHarbinHeilongjiang ProvinceChina Basic Medical Institute Heilongjiang Academy of Medical SciencesHarbinHeilongjiang ProvinceChina Key Laboratory of Heilongjiang Province for Genetically Modified Animals Harbin Medical UniversityHarbinHeilongjiang ProvinceChina Translational Medicine Research and Cooperation Center of Northern China Heilongjiang Academy of Medical SciencesHarbinHeilongjiang ProvinceChina Dongzhimen Hospital Beijing University of Chinese MedicineBeijingChina

N6-methyladenosine(m^(6)A), the most prevalent and conserved RNA modification in eukaryotic cells, profoundly influences virtually all aspects of mRNA metabolism. mRNA plays crucial roles in neural stem cell genesis and neural regeneration, where it is highly concentrated and actively involved in these processes. Changes in m^(6)A modification levels and the expression levels of related enzymatic proteins can lead to neurological dysfunction and contribute to the development of neurological diseases. Furthermore, the proliferation and differentiation of neural stem cells, as well as nerve regeneration, are intimately linked to memory function and neurodegenerative diseases. This paper presents a comprehensive review of the roles of m^(6)A in neural stem cell proliferation, differentiation, and self-renewal, as well as its implications in memory and neurodegenerative diseases. m^(6)A has demonstrated divergent effects on the proliferation and differentiation of neural stem cells. These observed contradictions may arise from the time-specific nature of m^(6)A and its differential impact on neural stem cells across various stages of development. Similarly, the diverse effects of m^(6)A on distinct types of memory could be attributed to the involvement of specific brain regions in memory formation and recall. Inconsistencies in m^(6)A levels across different models of neurodegenerative disease, particularly Alzheimer's disease and Parkinson's disease, suggest that these disparities are linked to variations in the affected brain regions. Notably, the opposing changes in m^(6)A levels observed in Parkinson's disease models exposed to manganese compared to normal Parkinson's disease models further underscore the complexity of m^(6)A's role in neurodegenerative processes. The roles of m^(6)A in neural stem cell proliferation, differentiation, and self-renewal, and its implications in memory and neurodegenerative diseases, appear contradictory. These inconsistencies may be a

关键词： Alzheimer's disease cell self-renewal central nervous system memory microglia nerve regeneration neurodegenerative diseases neurogenesis RNA methylation

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Efficient and Stable Photoassisted lithium‑Ion Battery Enabled by Photocathode with Synergistically Boosted Carriers Dynamics

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Nano-Micro Letters 2025年第3期17卷 440-454页

作者： Zelin Ma Shiyao Wang Zhuangzhuang Ma Juan li luomeng Zhao Zhihuan li Shiyuan Wang Yazhou Shuang Jiulong Wang Fang Wang Weiwei xia Jie Jian Yibo He Junjie Wang Pengfei Guo Hongqiang Wang State Key Laboratory of Solidification Processing Center for Nano Energy MaterialsSchool of Materials Science and EngineeringNorthwestern Polytechnical University and Shaanxi Joint Laboratory of Graphene(NPU)Xi’an 710072People’s Republic of China State Key Laboratory of Solidification Processing School of Materials Science and Engineering DepartmentNorthwestern Polytechnical UniversityXi’an 710072People’s Republic of China State Key Laboratory of Solidification Processing Center of Advanced Lubrication and Seal MaterialsSchool of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi’an 710072People’s Republic of China Research and Development Institute of Northwestern Polytechnical University in Shenzhen Shenzhen 518063People’s Republic of China Key Laboratory of Applied Surface and Colloid Chemistry Shaanxi Key Laboratory for Advanced Energy DevicesShaanxi Engineering Lab for Advanced Energy TechnologySchool of Materials Science and EngineeringNational Ministry of EducationShaanxi Normal UniversityXi’an 710119People’s Republic of China

Efficient and stable photocathodes with versatility are of significance in photoassisted lithium-ion batteries(PliBs),while there is always a request on fast carrier transport in electrochemical active *** work proposes a general approach of creating bulk heterojunction to boost the carrier mobility of photocathodes by simply laser assisted embedding of plasmonic *** employed in PliBs,it was found effective for synchronously enhanced photocharge separation and transport in light charging ***,experimental photon spectroscopy,finite difference time domain method simulation and theoretical analyses demonstrate that the improved carrier dynamics are driven by the plasmonic-induced hot electron injection from metal to TiO_(2),as well as the enhanced conductivity in TiO2 matrix due to the formation of oxygen vacancies after Schottky *** from these merits,several benchmark values in performance of TiO2-based photocathode applied in PliBs are set,including the capacity of 276 mAh g^(−1)at 0.2 A g^(−1)under illumination,photoconversion efficiency of 1.276%at 3 A g^(−1),less capacity and Columbic efficiency loss even through 200 *** results exemplify the potential of the bulk heterojunction strategy in developing highly efficient and stable photoassisted energy storage systems.

关键词： Photoassisted lithium-ion batteries Bulk heterojunction Carrier dynamics TiO2 nanofiber Plasmonic metal nanocrystals

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Dynamic performance enhancement in Ti/Au ohmic contacts on β-Ga2O3-on-Si C substrates: evidence from pulsed measurements

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Science China(Information Sciences) 2025年第1期68卷 400-401页

作者： Chenyu liU Yibo WANG Wenhui XU Shuqi HUANG Chunxiao YU Zeyu YANG xiaole JIA xiaoxi li Bochang li Zhengdong luo Cizhe FANG Yan liU Tiangui YOU Xin OU Genquan HAN School of Microelectronics Xidian University Suzhou Institute of Nano-Tech and Nano-Bionics Chinese Academy of Sciences Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences Hangzhou Institute of Technology Xidian University

Titanium/Gold （Ti/Au） metals have been widely employed as ohmic metal contacts on n+Ga2O3,exhibiting the specific contact resistance （ρc） of 10-5-10-6Ω·cm2[1].But previous studies have revealed the presence of a defective Ga2O3layer and reactive Ti-Ga2O3layer at the annealed Ti/*** an interfacial layer can afect the performance of ohmic contact,which may become more pronounced in power devices subjected to electrical stress and high-frequency ***,there have been no reports on the impact of bias stress effects and dynamic degradation of Ti/Au ohmic contacts on n+Ga2O3.

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平面细胞极性在晶状体发育中的作用

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国际眼科杂志 2019年第12期19卷 2041-2044页

作者：陈奕嘉李金燕欧阳帅罗莉霞中山大学中山眼科中心眼科学国家重点实验室

晶状体发育是一个复杂的生物学过程,受多种信号分子及其构成的通路网络调控。近年研究发现,平面细胞极性(PCP)信号通路在晶状体发育过程中起重要作用,是形成晶状体正常透明度和形态的基础。PCP的深入研究为临床治疗先天性白内障提供了... 详细信息

晶状体发育是一个复杂的生物学过程,受多种信号分子及其构成的通路网络调控。近年研究发现,平面细胞极性(PCP)信号通路在晶状体发育过程中起重要作用,是形成晶状体正常透明度和形态的基础。PCP的深入研究为临床治疗先天性白内障提供了指导意义,同时更是有望成为完善再生晶状体的新干预靶点。本文结合目前该领域研究进展就PCP在晶状体的发育过程中的作用进行详细综述。

关键词：平面细胞极性晶状体发育 Wnt/PCP信号通路晶状体纤维细胞细胞骨架

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Can patients with mild non-neoplastic lesions diagnosed at baseline screening be safely exempt from surveillance: evidence from multicenter community-based cohorts

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Science China life Sciences 2025年第1期68卷 263-271页

作者： Siyi He Zhiyi Zhang Guohui Song Zhenhai Wang Chunyun Dai Shipeng Yan Kun Jiang Bingbing Song He li Maomao Cao Dianqin Sun Fan Yang Xinxin Yan Shaoli Zhang Yi Teng Qianru li Changfa xia Wanqing Chen Office of Cancer Screening National Cancer Center/National Clinical Research Center for Cancer/Cancer HospitalChinese Academy of Medical Sciences and Peking Union Medical College Department of Gastroenterology Gansu Wuwei Tumor Hospital Cixian Cancer Institute linzhou Cancer Hospital Center for Disease Control and Prevention of Sheyang County Department of Cancer Prevention and Control Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of MedicineCentral South University luoshan Center for Disease Control and Prevention Office for Cancer Control and Research Affiliated Cancer Hospital of Harbin Medical University

Surveillance recommendations for gastric cancer（GC） in current guidelines focused on advanced precancerous lesions and were based on precise diagnosis of severity/extent of baseline lesions. We aimed to develop a less endoscopy-related equipment-dependent risk-stratification tool, and assessed whether mild-precursor-lesion patients can be safely exempt from surveillance. In the multicenter communitybased cohort, 75,051 participants receiving baseline endoscopy were enrolled during 2015–2017 and followed-up until 2021. Cumulative incidence rates（CIRs） of GC for precancerous-conditions were calculated by Kaplan-Meier method and compared by Log-rank tests. Mixedeffects Cox regression models were used to detect potential factors for progression towards GC. A risk score was calculated as counts of selected factors. An independent cohort, including 26,586 participants was used for external validation. During a median follow-up of 6.25 years, CIRs of GC were 0.302%, 0.436%, and 4.756% for normal group, non-neoplastic（atrophic gastritis/intestinal metaplasia） and neoplastic lesions（low-grade/high-grade dysplasia）, respectively(Ptrendlimited vegetable consumption, were selected for risk-stratification. High-risk patients（≥3 risk factors） with non-neoplastic lesions showed higher GC risks（adjusted HR=7.73, 95%CI: 4.29–13.92）, and their four-year CIR reached the one-year CIR of neoplastic lesions. Further categorizing non-neoplastic lesions by histological grade, both patients with moderate-to-severe lesions（aHR=3.07, 95%CI: 1.67–5.64） and high-risk patients with mild lesions（aHR=7.29, 95%CI: 3.58–14.86） showed higher risks. Consistent trends were observed in validation cohort. High-risk mild-precursor-lesion patients should receive surveillance within 3–5 years after baseline screening. Our study provides evidence on supplementing current guideline recommendations.

关键词： stomach neoplasms precancerous conditions cancer screening cumulative incidence risk stratification

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Optimal Sizing of Electricity-hydrogen Integrated Energy System Considering Multi-timescale Operation of Hydrogen Storage System

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Dianwang Jishu/Power System Technology 2025年第1期49卷 12-21页

作者： li, Zichen xia, Yanghong Sun, Yong li, Dexin li, Baoju Wei, Wei College of Electrical Engineering Zhejiang University Zhejiang Province Hangzhou 310027 China Institute of Wenzhou Zhejiang University Zhejiang Province Wenzhou 325006 China State Grid Jilin Electric Power Company Co. Ltd. Jilin Province Jilin 130021 China

Responding to the Carbon Peaking and Carbon Neutrality Goals and the actual demand for local consumption of distributed renewable energy sources, this paper proposes a method to optimize the capacity of an electricity-hydrogen integrated energy system to meet the demand for multiple loads of electricity, heat, and hydrogen to deal with multi-timescale energy mismatches. Firstly, a hybrid energy storage system model containing batteries and cascade hydrogen storage and a multi-timescale operation strategy are proposed. The model fully exploits the short-term and long-term operational characteristics of hydrogen storage to realize its multi-scale utilization. Secondly, to address the challenges in describing the operation characteristics of long-term energy storage devices based on the traditional typical scenario method, a novel scenario reduction method based on the time-series aggregation method is proposed to provide consecutive scenarios comprising both short-time fluctuations and seasonal characteristics. The technique can effectively speed up the solution and ensure its accuracy. After that, a system capacity optimization model is developed based on the typical scenarios to minimize the life cycle cost and consider factors including energy storage’s degradation and the consumption rate of renewable energy. Finally, the effectiveness of the proposed method is verified by cases in Ningbo, Zhejiang, China. The results indicate that the life cycle cost can be reduced by 21.3% with nearly 100% renewable energy consumption compared to the traditional energy management strategy. © 2025 Power System Technology Press. All rights reserved.

关键词： Charge storage

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3D Printing of Tough Hydrogel Scaffolds with Functional Surface Structures for Tissue Regeneration

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Nano-Micro Letters 2025年第2期17卷 18-45页

作者： Ke Yao Gaoying Hong Ximin Yuan Weicheng Kong Pengcheng xia Yuanrong li Yuewei Chen Nian liu Jing He Jue Shi Zihe Hu Yanyan Zhou Zhijian Xie Yong He State Key Laboratory of Fluid Power and Mechatronic Systems School of Mechanical EngineeringZhejiang UniversityHangzhou 310027People’s Republic of China liangzhu Laboratory Zhejiang UniversityHangzhou 310027People’s Republic of China Key Laboratory of 3D Printing Process and Equipment of Zhejiang Province College of Mechanical EngineeringZhejiang UniversityHangzhou 310027People’s Republic of China Stomatology Hospital School of StomatologyZhejiang University School of MedicineHangzhou 310027People’s Republic of China State Key Laboratory of Advanced Welding and Joining Harbin Institute of TechnologyHarbin 150001People’s Republic of China Institute of Digital Medicine Nanjing First HospitalNanjing Medical UniversityNanjing 210006People’s Republic of China

Hydrogel scaffolds have numerous potential applications in the tissue engineering ***,tough hydrogel scaffolds implanted in vivo are seldom reported because it is difficult to balance biocompatibility and high mechanical *** by Chinese ramen,we propose a universal fabricating method(printing-P,training-T,cross-linking-C,PTC&PCT)for tough hydrogel scaffolds to fill this ***,3D printing fabricates a hydrogel scaffold with desired structures(P).Then,the scaffold could have extraordinarily high mechanical properties and functional surface structure by cycle mechanical training with salting-out assistance(T).Finally,the training results are fixed by photo-cross-linking processing(C).The tough gelatin hydrogel scaffolds exhibit excellent tensile strength of 6.66 MPa(622-fold untreated)and have excellent ***,this scaffold possesses functional surface structures from nanometer to micron to millimeter,which can efficiently induce directional cell ***,this strategy can produce bionic human tissue with mechanical properties of 10 kPa-10 MPa by changing the type of salt,and many hydrogels,such as gelatin and silk,could be improved with PTC or PCT *** experiments show that this scaffold can effectively promote the new generation of muscle fibers,blood vessels,and nerves within 4 weeks,prompting the rapid regeneration of large-volume muscle loss injuries.

关键词： 3D printing Tough hydrogel scaffold Functional surface structure Tissue regeneration Biomaterials

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Stable copper boron–imidazolate cage as Cu-riched enzyme for highly efficient electrocatalytic CO2 reduction to ethylene

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Science China Chemistry 2025年

作者： Jun-Qiang Chen Qiao-Hong li Qin-Long Hong Ping Shao Hai-xia Zhang Jian Zhang State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences

Single-atom catalyst has garnered widespread attention to mimic mature enzymes due to its well-defined atomic structure and coordination environments. However, since the carbon–carbon（C–C） coupling reactions require synergistic catalysis of multiple sites, single-atom catalysts suffer from insufficient active sites and unclear reaction mechanisms. Controlling the reaction intermediates in a precisely targeted pocket through careful metal–organic cage design is therefore crucial. Here, we prepare a tetrahedral [Cu6L4]-type boron–imidazolate cage integrating highly active Cu sites and optimized cavity, which exhibits enzyme like specific catalytic performance in electrochemical CO2reduction reaction（CO2RR） to enhance the selectivity of *** analyses and computational calculations suggest that the single Cu site together with neighboring boron–imidazolate ligands provides suitably synergistic effects that enable the energetically favorable formation of an *COCHO intermediate, a key step determining selectivity. As a result, the [Cu6L4]-type cage of BIC-145 achieves a Faradaic efficiency of 28% for C2H4maintaining an average current density of -3.54 mA cm-2over a 5-hour electrolysis period. This work represents the first example for studying single-metal site catalysts with ultra-low coordination numbers through the rational design of metal–organic cages.

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重组人源化抗TNF-α单抗WLB303猴重复给药毒性试验血清中和抗体确证方法的建立

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中国新药杂志 2017年第20期26卷 2386-2395页

作者：陈红霞李雪罗涛李乐于玉根蒙志超刘思思深圳万乐药业有限公司深圳518029 北京昭衍新药研究中心股份有限公司北京100176

目的:建立一种快速、灵敏、高效和易操作的方法,用于检测重组人源化抗TNF-α单抗WLB303猴重复给药毒性试验血清中产生的中和抗体。方法:对食蟹猴静脉输注WLB303,连续给药4周。采取给药期和恢复期不同时间的血清,随后采用桥式酶联免疫吸... 详细信息

目的:建立一种快速、灵敏、高效和易操作的方法,用于检测重组人源化抗TNF-α单抗WLB303猴重复给药毒性试验血清中产生的中和抗体。方法:对食蟹猴静脉输注WLB303,连续给药4周。采取给药期和恢复期不同时间的血清,随后采用桥式酶联免疫吸附法对血清中的抗药抗体进行定性筛选,对筛选为阳性的血清样本进行预处理,然后以WLB303生物学活性测定法为基础的中和反应法对中和抗体进行确证。结果:建立了WLB303中和抗体的确证方法,确定了检测的临界点。确证方法的检出率为100%,在血清中检测到具有中和活性的抗体,中和抗体的中和作用强度总体与给药时间、给药剂量呈正相关。结论:建立的检测方法能够直接体现出剂量差异性和个体差异性,也能反映中和抗体的滴度差别。该方法的特异性、灵敏度和有效性能够满足试验要求,可以用于单抗药物重复给药动物毒性试验血清中和抗体的检测。

关键词：桥式酶联免疫吸附法中和抗体生物学活性重复给药毒性试验

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多指标正交实验优选清热达郁口服液提取工艺

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时珍国医国药 2007年第2期18卷 426-427页

作者：尚丽霞罗惠善尹寿玉延边大学药学院延边大学药学院吉林延吉133000

目的优化清热达郁口服液的提取工艺。方法采用正交实验设计,以梓醇、黄芩苷的含量为考察指标,并进行多指标综合评分,优化提取条件。结果清热达郁口服液的最佳提取工艺为:加8倍量水,回流提取3次,2 h/次。结论该提取工艺稳定可行。

关键词：清热达郁口服液梓醇黄芩苷提取工艺正交试验

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