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Ferroptosis:a critical mechanism of N^(6)-methyladenosine modification involved in carcinogenesis and tumor progression

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Science China(Life Sciences) 2024年第6期67卷 1119-1132页

作者： qingqing wei Changning Xue Mengna Li Jianxia wei Lemei Zheng Shipeng Chen Yumei Duan Hongyu Deng Faqing Tang wei Xiong Ming Zhou NHC Key Laboratory of Carcinogenesis Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of MedicineCentral South UniversityChangsha 410013China Cancer Research Institute and School of Basic Medical Sciences Central South UniversityChangsha 410078China The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education Central South UniversityChangsha 410078China Hunan Key Laboratory of Oncotarget Gene Hunan Key Laboratory of Cancer MetabolismHunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of MedicineCentral South UniversityChangsha 410013China

Ferroptosis is an iron-dependent regulatory cell necrosis induced by iron overload and lipid peroxidation.It occurs when multiple redoxactive enzymes are ectopically expressed or show abnormal function.Hence,the precise regulation of ferroptosis-related molecules is mediated across multiple levels,including transcriptional,posttranscriptional,translational,and epigenetic levels.N^(6)-methyladenosine(m^(6)A)is a highly evolutionarily conserved epigenetic modification in mammals.The m^(6)A modification is commonly linked to tumor proliferation,progression,and therapy resistance because it is involved in RNA metabolic processes.Intriguingly,accumulating evidence suggests that dysregulated ferroptosis caused by the m^(6)A modification drives tumor development.In this review,we summarized the roles of m^(6)A regulators in ferroptosis-mediated malignant tumor progression and outlined the m^(6)A regulatory mechanism involved in ferroptosis pathways.We also analyzed the potential value and application strategies of targeting m^(6)A/ferroptosis pathway in the clinical diagnosis and therapy of tumors.

关键词： ferroptosis m6A modification RNA methylation m^(6)A regulator tumor progression

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Ferroptosis: a critical mechanism of N-methyladenosine modification involved in carcinogenesis and tumor progression

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Science China Life Sciences 2024年

作者： qingqing wei Changning Xue Mengna Li Jianxia wei Lemei Zheng Shipeng Chen Yumei Duan Hongyu Deng Faqing Tang wei Xiong Ming Zhou NHC Key Laboratory of Carcinogenesis Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine Central South University The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education Central South University Hunan Key Laboratory of Oncotarget Gene Hunan Key Laboratory of Cancer Metabolism Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine Central South University Cancer Research Institute and School of Basic Medical Sciences Central South University

Ferroptosis is an iron-dependent regulatory cell necrosis induced by iron overload and lipid peroxidation. It occurs when multiple redoxactive enzymes are ectopically expressed or show abnormal function. Hence, the precise regulation of ferroptosis-related molecules is mediated across multiple levels, including transcriptional, posttranscriptional, translational, and epigenetic levels. N6-methyladenosine(m6A) is a highly evolutionarily conserved epigenetic modification in mammals. The m6A modification is commonly linked to tumor proliferation, progression, and therapy resistance because it is involved in RNA metabolic processes. Intriguingly, accumulating evidence suggests that dysregulated ferroptosis caused by the m6A modification drives tumor development. In this review, we summarized the roles of m6A regulators in ferroptosis-mediated malignant tumor progression and outlined the m6A regulatory mechanism involved in ferroptosis pathways. We also analyzed the potential value and application strategies of targeting m6A/ferroptosis pathway in the clinical diagnosis and therapy of tumors.

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地表水环境监测中金属元素的分析

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皮革制作与环保科技 2024年第10期5卷 73-75页

作者：韦情情淄博市生态环境局淄川分局山东淄博255100

随着城市化与工业化进程的加快,地表水环境污染问题变得越来越严重,其中,金属元素污染备受关注。为了有效保护生态环境,并为金属污染治理与地表水环境监测提供理论依据,本文阐述了地表水环境中金属元素的来源与危害,介绍了金属元素的分... 详细信息

随着城市化与工业化进程的加快,地表水环境污染问题变得越来越严重,其中,金属元素污染备受关注。为了有效保护生态环境,并为金属污染治理与地表水环境监测提供理论依据,本文阐述了地表水环境中金属元素的来源与危害,介绍了金属元素的分析方法,探讨了金属元素分析方法在环境监测中的运用,并通过案例研究,分析金属元素在地表水环境中的浓度变化趋势,以期促进金属污染治理与地表水环境监测水平的提高,从而更好地保护与管理地表水环境。

关键词：地表水环境监测金属元素

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Expression pattern and regulation of head-to-head genes Vps36 and Ckap2 during chicken follicle development

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Frontiers of Agricultural Science and Engineering 2014年第2期1卷 130-136页

作者： Xinxing CUI Chunhong YANG Li KANG Guiyu ZHU qingqing wei Yunliang JIANG Laboratory of Animal Molecular Genetics College of Animal Science and Veterinary MedicineShandong Agricultural UniversityTaian 271018China Department of Biology Science and Technology Taishan UniversityTaian 271021China

Vacuolar protein sorting 36(VPS36),a protein primarily known for its role in the Endosomal Sorting Complex Required for Transport pathway,has recently been shown to be linked to chicken reproduction.Previous research showed that Vps36 is significantly downregulated in sexually mature chicken ovaries compared to immature ones.In this study,using real-time quantitative RT-PCR,we investigated the expression pattern of Vps36 and its head-to-head gene Ckap2 mRNA in chicken follicles.Small white follicles were found to have significantly higher expression of Vps36 and Ckap2 mRNA than any other sized follicles(P<0.05).The expression of Vps36 and Ckap2 mRNA were detected in both granulosa and theca layers of pre-ovulatory follicles,the expression of Ckap2 in theca layers was slightly higher than in granulosa cells.Treatment of small yellow follicles with folliclestimulating hormone and estradiol resulted in a marked decrease of both Vps36 and Ckap2 mRNA(P<0.05);however,progesterone,transforming growth factor-β1 and luteinizing hormone induced no significant changes in Vps36 and Ckap2 mRNA expression in these follicles.These results indicate that the head-to-head genes of Vps36 and Ckap2 exhibit similar expression in chicken follicles and are involved in chicken follicle development.

关键词： chicken Vps36 Ckap2 mRNA follicle

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Pluripotent stem cells secrete Activin A to improve their epiblast competency after injection into recipient embryos

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Protein & Cell 2018年第8期9卷 717-728页

作者： Jinzhu Xiang Suying Cao Liang Zhong Hanning Wang Yangli Pei qingqing wei Bingqiang Wen Haiyuan Mu Shaopeng Zhang Liang Yue Genhua Yue Bing Lim Jianyong Han State Key Laboratory for Agrobiotechnology College of Biological Sciences China Agricultural University Beijing 100193 China Animal Science and Technology College Beijing University of Agriculture Beijing 102206 China Temasek Life Sciences Laboratory National University of Singapore Singapore 117604 Singapore Stem Cell and Developmental Biology Genome Institute of Singapore Singapore 138672 Singapore Beijing Advanced Innovation Center for Food Nutrition and Human Health China Agricultural University Beijing 100193 China State Key Laboratory of Animal Nutrition Institute of Animal Sciences Chinese Academy of Agricultural Sciences Beijing 100193 China

It is not fully clear why there is a higher contribution of pluripotent stem cells （PSCs） to the chimera produced by injection of PSCs into 4-cell or 8-cell stage embryos compared with blastocyst injection. Here, we show that not only embryonic stem cells （ESCs） but also induced pluripotent stem cells （iPSCs） can generate F0 nearly 100% donor cell-derived mice by 4-cell stage embryo injection, and the approach has a ＂dose effect＂. Through an analysis of the PSC-secreted proteins, Activin A was found to impede epiblast （EPI） lineage development while promoting trophectoderm （TE） differentiation, resulting in replacement of the EPI lineage of host embryos with PSCs. Interestingly, the injection of ESCs into blastocysts cultured with Activin A （cultured from 4-cell stage to early blastocyst at E3.5） could increase the contribution of ESCs to the chimera. The results indicated that PSCs secrete protein Activin A to improvetheir EPI competency after injection into recipient embryos through influencing the development of mouse early embryos. This result is useful for optimizing the chimera production system and for a deep understand- ing of PSCs effects on early embryo development.

关键词： pluripotent stem cells 4-cell embryoinjection secreted proteins Activin A chimeric mice

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空间小碎片抱捕用连续型机器人结构综述

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航天器工程 2024年第1期33卷 107-114页

作者：杨承旭王丽华危清清赵志军王耀兵北京空间飞行器总体设计部空间智能机器人系统技术与应用北京市重点实验室北京100094 吉林大学长春130025

空间小碎片的抓捕任务需要空间机器人在没有合作信息的情况下对目标进行抓捕,连续型机器人本体可在缺少抓捕对象精确测量信息的条件下,直接利用大容差实现高可靠抱捕任务。文章针对连续型机器人在空间小碎片抓捕领域的应用需求,对连续... 详细信息

空间小碎片的抓捕任务需要空间机器人在没有合作信息的情况下对目标进行抓捕,连续型机器人本体可在缺少抓捕对象精确测量信息的条件下,直接利用大容差实现高可靠抱捕任务。文章针对连续型机器人在空间小碎片抓捕领域的应用需求,对连续型机器人的驱动方式,以及绳驱动连续型机器人的主干、关节进行详细的调研和对比分析,在此基础上提出绳驱动连续型机器人结构设计需关注的关键问题,最后针对应用于空间抱捕任务的连续型机器人结构技术的未来发展进行展望。

关键词：连续型机器人空间抱捕任务结构设计研究展望

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青藤碱在JNK/c-Jun信号通路中对LPS诱导的肺上皮细胞凋亡和自噬的影响

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中国免疫学杂志 2024年第4期40卷 731-735页

作者：李莉孙颖颖白莹胡罗文魏庆庆严宇鹏王冀应急总医院重症医学科北京100028

目的:探究青藤碱(SIN)通过JNK/c-Jun信号通路对LPS诱导的肺上皮细胞凋亡和自噬的影响。方法:培养肺上皮细胞MLE-12,通过CCK-8检测SIN的毒性。流式细胞术检测细胞凋亡,免疫荧光检测自噬体形成数量,Western blot检测细胞中凋亡、自噬以及J... 详细信息

目的:探究青藤碱(SIN)通过JNK/c-Jun信号通路对LPS诱导的肺上皮细胞凋亡和自噬的影响。方法:培养肺上皮细胞MLE-12,通过CCK-8检测SIN的毒性。流式细胞术检测细胞凋亡,免疫荧光检测自噬体形成数量,Western blot检测细胞中凋亡、自噬以及JNK/c-Jun信号通路相关蛋白表达水平。结果:LPS造模后,细胞凋亡率和自噬体数量升高,Cleaved caspase-3、Bax和Beclin-1蛋白水平及LC3Ⅱ/LC3Ⅰ、p-JNK/JNK和p-c-Jun/c-Jun均升高(P<0.05);Bcl-2、P62蛋白水平均降低(P<0.05)。SIN处理可明显改善LPS对细胞凋亡和自噬的影响,以及对JNK/c-Jun信号通路的调控(P<0.05)。细胞自噬抑制剂3-MA或JNK激动剂ANISO处理均可部分逆转SIN对LPS诱导的肺上皮细胞的保护作用(P<0.05)。结论:SIN可通过调控JNK/c-Jun信号通路相关蛋白提高细胞自噬,保护被LPS损伤的肺上皮细胞。

关键词：青藤碱 JNK/c-Jun信号通路 LPS 肺上皮细胞凋亡自噬

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A Blind Batch Encryption and Public Ledger-Based Protocol for Sharing Sensitive Data

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China Communications 2024年第1期21卷 310-322页

作者： Zhiwei Wang Nianhua Yang qingqing Chen wei Shen Zhiying Zhang School of Computer Sciences Nanjing University of Posts and TelecommunicationsNanjing 210023China Dept.of Intelligent Science and Information Law East China University of Political Science and LawShanghai 201620China Key Laboratory of Computational Science and Application of Hainan Province Hainan Normal UniversityHaikou 571158China State Key Laboratory of Public Big Data Guizhou UniversityGuizhou 550025China Yunnan Key Laboratory of Blockchain Application Technology Yunnan Innovation Research Institute of Beijing University of Aeronautics and AstronauticsKunming 650233

For the goals of security and privacy preservation,we propose a blind batch encryption-and public ledger-based data sharing protocol that allows the integrity of sensitive data to be audited by a public ledger and allows privacy information to be preserved.Data owners can tightly manage their data with efficient revocation and only grant one-time adaptive access for the fulfillment of the requester.We prove that our protocol is semanticallly secure,blind,and secure against oblivious requesters and malicious file keepers.We also provide security analysis in the context of four typical attacks.

关键词： blind batch encryption data sharing onetime adaptive access public ledger security and privacy

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抗炎类药物治疗糖尿病肾病的Meta分析

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中国药师 2024年第4期27卷 684-696页

作者：赵阳韦青清战翔宇张冬瑞刘佳薛嵩张杨邓佳豪隋洪玉佳木斯大学基础医学院生理学教研室黑龙江佳木斯154007 黑龙江省微生物-免疫调解网络与相关疾病重点实验室黑龙江佳木斯154007

目的系统评价抗炎类药物治疗糖尿病肾病(DN)的有效性。方法采用PubMed、The Cochrane Library、Embase、Web of Science、Scopus、Ovid、ProQuest、CBM、CNKI、万方、VIP、读秀数据库,搜集抗炎类药物治疗DN的随机对照试验(RCT),检索... 详细信息

目的系统评价抗炎类药物治疗糖尿病肾病(DN)的有效性。方法采用PubMed、The Cochrane Library、Embase、Web of Science、Scopus、Ovid、ProQuest、CBM、CNKI、万方、VIP、读秀数据库,搜集抗炎类药物治疗DN的随机对照试验(RCT),检索时限从建库至2022年4月5日。由两名研究者独立筛选文献、提取资料并评价纳入研究的偏倚风险后,采用RevMan 5.4软件进行Meta分析。结果共纳入29篇文献,含26个RCT,4 095例患者。Meta分析结果显示,与常规治疗相比,常规治疗联合抗炎类药物治疗DN能够有效降低尿白蛋白与肌酐比值[SMD=-0.17,95%CI(-0.31,-0.03),P=0.02]、尿白蛋白排泄率[SMD=-0.37,95%CI(-0.56,-0.18),P=0.000 1]、尿蛋白排泄率[SMD=-0.97,95%CI(-1.29,-0.64),P <0.000 01]和糖化血红蛋白[SMD=-0.17,95%CI(-0.27,-0.08),P=0.000 4];而在降低血肌酐[SMD=-0.04,95%CI(-0.19,0.1),P=0.57]、尿素氮[MD=-0.23,95%CI(-0.50,0.04),P=0.09]和空腹血糖[SMD=-0.15,95%CI(-0.32,0.02),P=0.08]方面差异无统计学意义;除少数药物外,多种药物在改变肾小球滤过率[SMD=-0.04,95%CI(-0.15,0.07),P=0.47]方面差异无统计学意义。结论常规治疗联合抗炎类药物,能更好地改善DN患者的蛋白尿水平,但肾功能改善不明显。受纳入研究数量及疗程限制,上述结论有待更多高质量研究验证。

关键词：抗炎药糖尿病肾病炎症系统评价 Meta分析肾小球滤过率血清肌酐尿毒氮

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Organic heterojunction synaptic device with ultra high recognition rate for neuromorphic computing

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Nano Research 2024年第6期17卷 5614-5620页

作者： Xuemeng Hu Jialin Meng Tianyang Feng Tianyu Wang Hao Zhu qingqing Sun David wei Zhang Lin Chen School of Microelectronics State Key Laboratory of Integrated Chips and SystemsFudan UniversityShanghai 200433China National Integrated Circuit Innovation Center Shanghai 201203China

Traditional computing structures are blocked by the von Neumann bottleneck,and neuromorphic computing devices inspired by the human brain which integrate storage and computation have received more and more attention.Here,a flexible organic device with 2,7-dioctyl[1]benzothieno[3,2-b][1]benzothiophene(C8-BTBT)and 2,9-didecyldinaphtho[2,3-b:2′,3′-f]thieno[3,2-b]thiophene(C10-DNTT)heterostructural channel having excellent synaptic behaviors was fabricated on muscovite(MICA)substrate,which has a memory window greater than 20 V.This device shows better electrical characteristics than organic field effect transistors with single organic semiconductor channel.Furthermore,the device simulates organism synaptic behaviors successfully,such as paired-pulse facilitation(PPF),long-term potentiation/depression(LTP/LTD)process,and transition from short-term memory(STM)to long-term memory(LTM)by optical and electrical modulations.Importantly,the neuromorphic computing function was verified using the Modified National Institute of Standards and Technology(MNIST)pattern recognition,with a recognition rate nearly 100%without noise.This research proposes a flexible organic heterojunction with the ultra-high recognition rate in MNIST pattern recognition and provides the possibility for future flexible wearable neuromorphic computing devices.

关键词： organic heterojunction neuromorphic computing synapse behaviors optical modulation Modified National Institute of Standards and Technology(MNIST)pattern recognition

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