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转录因子ATF3与前列腺癌临床相关性的分析研究

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安徽医专学报 2024年第2期23卷 90-93页

作者：徐凌凡丁和康施浩强杨诚邰胜安徽医科大学第一附属医院泌尿外科安徽合肥230022

目的:探究转录因子ATF3与前列腺癌的临床相关性,了解ATF3在前列腺癌组织中的表达以及其表达强度对前列腺癌患者预后的影响。方法:采用公共数据库挖掘的方法分析ATF3在前列腺癌组织中的突变情况以及ATF3在正常前列腺组织以及前列腺癌组... 详细信息

目的:探究转录因子ATF3与前列腺癌的临床相关性,了解ATF3在前列腺癌组织中的表达以及其表达强度对前列腺癌患者预后的影响。方法:采用公共数据库挖掘的方法分析ATF3在前列腺癌组织中的突变情况以及ATF3在正常前列腺组织以及前列腺癌组织中的表达情况,kaplan-meier方法分析ATF3的表达强度与前列腺癌患者临床预后的相关性;免疫组化染色验证ATF3在正常前列腺组织和前列腺癌组织中的蛋白表达;患者临床信息分析ATF3的表达高低与前列腺癌临床特征的关联。结果:ATF3在前列腺癌组织中表现为高扩增突变,且ATF3在前列腺癌组织中的表达明显高于正常前列腺组织;ATF3与前列腺癌疾病的发生、进展(病灶转移)相关;高表达ATF3的前列腺癌患者预后较差。结论:ATF3的表达强度与前列腺癌的发生发展相关,可作为前列腺癌诊断及预后判断的重要指标。

关键词：前列腺癌 ATF3 免疫组化前列腺特异性抗原

Ankle-brachial index and brachial-ankle pulse wave velocity are risk factors for ischemic stroke in patients with type 2 diabetes

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Neural Regeneration Research 2017年第11期12卷 1853-1859页

作者： Ting Li Xiu-juan Wu Xiao-min Chen Si-bo Wang kang-ding Liu Ying-qi Xing Neuroscience Center Department of Neurologythe First Hospital of Jilin UniversityChangchunJilin ProvinceChina

The incidence of ischemic stroke in patients with diabetes is increasing. While brachial-ankle pulse wave velocity （BaPWV） and ankle-bra- chial index （ABI） are known to be associated with ischemic cardiovascular and cerebrovascular diseases, whether these measures predict the risk of ischemic cerebrovascular disease in diabetic patients remains unclear. 117 patients with type 2 diabetes were enrolled in this study. According to the results of head magnetic resonance imaging, the patients were divided into a diabetes-only group （n = 55） and a diabetes and ischemic stroke group （n = 62）. We then performed ABI and BaPWV examinations for all patients. Compared with the diabe- tes-only group, we found decreased ABI and increased BaPWV in the diabetes and ischemic stroke group. Multivariate logistic regression analyses revealed that BaPWV and ABI were risk factors for ischemic stroke in patients with type 2 diabetes. Our findings indicate that decreased ABI and increased BaPWV are objective indicators of increased risk of ischemic stroke in patients with type 2 diabetes.

关键词： nerve regeneration brain injury ischemic stroke type 2 diabetes ankle-brachial index brachial-ankle pulse wave velocity magnetic resonance imaging low-density lipoprotein high-density lipoprotein transcranial Doppler ultrasonography carotid ultrasound scans neural regeneration

CRISPR/Cas9系统清除细菌多药耐药基因IMP-4和KPC-2的机制

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中华医院感染学杂志 2024年第12期34卷 1767-1772页

作者：黄俊刘鸿博丁康慧邱少富杜昕颖包仁龙宋宏彬袁正泉安徽医科大学公共卫生学院职业卫生与环境卫生学系安徽合肥230000 中国人民解放军疾病预防控制中心传染病防控科北京100000 安徽医科大学公共卫生学院流行病与卫生统计学系安徽合肥230000

目的利用CRISPR/Cas9系统对细菌多药耐药基因IMP-4、KPC-2进行清除,恢复抗菌药物的杀菌效力.方法采用分子克隆方法构建CRISPR/Cas9质粒.制备耐药菌感受态细胞,采用质粒转化的方法将CRISPR/Cas9系统递送至耐药菌.利用菌落聚合酶链式反应(... 详细信息

目的利用CRISPR/Cas9系统对细菌多药耐药基因IMP-4、KPC-2进行清除,恢复抗菌药物的杀菌效力.方法采用分子克隆方法构建CRISPR/Cas9质粒.制备耐药菌感受态细胞,采用质粒转化的方法将CRISPR/Cas9系统递送至耐药菌.利用菌落聚合酶链式反应(PCR)检测耐药基因携带情况.采用实时荧光定量PCR检测各个CRISPR/Cas9靶点针对耐药基因的清除效率.采用Sensititre药敏板法及E-test药敏试纸条法检测细菌药敏表型.结果针对IM4P-4、KPC-2构建携带目的sapcer的CRISPR/Cas9质粒;菌落计数结果表明耐药基因被CRISPR/Cas9系统清除,清除率为100.00%(5/5);对细菌耐药基因进行相对定量分析,结果显示各个靶点的清除效率在24 h即达到99.9%;药敏鉴定实验结果表明实验组细菌恢复对抗菌药物的敏感性,而对照组细菌依旧对抗菌药物耐药.在药敏Etest试纸条中,与对照组相比,实验组细菌哌拉西林的最小抑菌浓度(MIC)值减少约204.8倍(P<0.05),恢复了细菌对抗菌药物的敏感性;CRISPR/Cas9系统能阻断细菌通过转化途径对耐药质粒的获取,且阻断效率高达99.9%(P<0.05).结论利用CRISPR/Cas9系统快速清除细菌耐药基因IMP-4、KPC-2,恢复抗菌药物的杀菌效力,展现了极大的临床应用价值.

关键词： CRISPR/Cas9 细菌耐药性多药耐药基因耐药性清除

Mi R-9a-5p regulates proliferation and migration of hepatic stellate cells under pressure through inhibition of Sirt1

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World Journal of Gastroenterology 2015年第34期21卷 9900-9915页

作者： Feng Qi Jiang-Feng Hu Bao-Hai Liu Chao-Qun Wu Hong-Yu Yu ding-kang Yao Liang Zhu Department of Gastroenterology Changzheng Hospitalthe Second Military Medical University Department of Gastroenterology Institute of Digestive DiseasesTongji HospitalTongji University Genetics Institute Fudan University

AIM:To reveal the functions of micro RNAs(mi RNAs) with respect to hepatic stellate cells(HSCs) in response to portal ***:Primary rat HSCs were exposed to static water pressure(10 mm Hg,1 h) and the pressureinduced mi RNA expression profile was detected by next-generation sequencing. Quantitative real-time polymerase chain reaction was used to verify the expression of mi RNAs. A potential target of Mi R-9a-5p was measured by a luciferase reporter assay and Western blot. CCK-8 assay and Transwell assay were used to detect the proliferation and migration of HSCs under ***:According to the profile,the expression of mi R-9a-5p was further confirmed to be significantly increased after pressure overload in HSCs(3.70 ± 0.61 vs 0.97 ± 0.15,P = 0.0226),which resulted in the proliferation,migration and activation of HSCs. In vivo,the up-regulation of mi R-9a-5p(2.09 ± 0.91 vs 4.27 ± 1.74,P = 0.0025) and the down-regulation of Sirt1(2.41 ± 0.51 vs 1.13 ± 0.11,P = 0.0006) were observed in rat fibrotic liver with portal hypertension. Sirt1 was a potential target gene of mi R-9a-5p. Through restoringthe expression of Sirt1 in mi R-9a-5p transfected HSCs on pressure overload,we found that overexpression of Sirt1 could partially abrogate the mi R-9a-5p mediated suppression of the proliferation,migration and activation of HSCs. CONCLUSION:Our results suggest that during liver fibrosis,portal hypertension may induce the proliferation,migration and activation of HSCs through the up-regulation of mi R-9a-5p,which targets Sirt1.

关键词： Micro RNA mi R-9a-5p Sirt1 Pressure Hepatic stella

Construction of ZnO@CDs@Co_(3)O_(4) sandwich heterostructure with multi-interfacial electron-transfer toward enhanced photocatalytic CO_(2) reduction

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Chinese Chemical Letters 2024年第4期35卷 147-152页

作者： Xiuzheng Deng Yi Ke Jiawen ding Yingtang Zhou Hui Huang Qian Liang Zhenhui kang Advanced Catalysis and Green Manufacturing Collaborative Innovation Center CNPC-CZU Innovation AllianceSchool of Petrochemical EngineeringChangzhou UniversityChangzhou 213164China Institute of Functional Nano&Soft Materials(FUNSOM) Jiangsu Key Laboratory for Carbon-Based Functional Materials&DevicesSoochow UniversitySuzhou 215123China Zhejiang Key Laboratory of Petrochemical Environmental Pollution Control National Engineering Research Center for Marine AquacultureMarine Science and Technology CollegeZhejiang Ocean UniversityZhoushan 316004China

Photocatalytic conversion of CO_(2) into small-molecule chemical feedstocks can meet the growing demand for energy and alleviate the global warming. Herein, a p-n ZnO@CDs@Co_(3)O_(4) heterojunction with sandwich structure was constructed by calcination method of self-assembled ZIF-8@CDs@ZIF-67. The ZnO@CDs@Co_(3)O_(4) with well-defined interfacial structure exhibited the significantly enhanced photocatalytic CO_(2) reduction activity, and the optimal catalyst indicated the(CO + CH_(4)) evolution rate of 214.53μmol g^(-1)h^(-1) under simulated solar light, which was superior to ZnO, Co_(3)O_(4) and binary ZnO@Co_(3)O_(4).The internal cavity, exposed active sites, multiple interfaces and constructed p-n heterojunction can facilitate the light harvesting and photoexcited electron transfer. Besides, after introduction of CDs placed in the middle layer between ZnO and Co_(3)O_(4), CDs with excellent photoelectric property further promoted charge separation and migration. This work represents an appealing strategy to construct well-defined photocatalysts for boosting CO_(2) photoreduction.

关键词： Metal-organic framework Photocatalytic CO_(2) reduction Carbon dots p-n heterojunction Sandwich heterostructure

毛茛科中C_(20)-二萜生物碱及其生物活性研究进展

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中国中药杂志 2024年第15期49卷 4054-4068页

作者：李东旭续洁琨殷伟峰张帆朱海王东格丁康潘雪格李玲芝赫军张维库中日友好医院药学部&临床医学研究所北京100029 沈阳药科大学中药学院辽宁沈阳117004 北京中医药大学生命科学学院北京100029 北京中医药大学中药学院北京100029

C_(20)-二萜生物碱在毛茛科中主要分布在乌头属、翠雀属和飞燕草属植物中,其化学结构类型主要分为阿替生型、光翠雀碱型、海替定型和海替生型等9种类型。生物活性研究表明该类化合物在抗肿瘤、镇痛、抗心律失常和抗炎等方面均表现出较... 详细信息

C_(20)-二萜生物碱在毛茛科中主要分布在乌头属、翠雀属和飞燕草属植物中,其化学结构类型主要分为阿替生型、光翠雀碱型、海替定型和海替生型等9种类型。生物活性研究表明该类化合物在抗肿瘤、镇痛、抗心律失常和抗炎等方面均表现出较好的活性。该文对2002年至今从毛茛科植物中报道的190个C_(20)-二萜生物碱的化学结构和生物活性进行了总结,以期对毛茛科植物中C_(20)-二萜生物碱的研究提供参考。

关键词：毛茛科 C_(20)-二萜生物碱乌头属翠雀属飞燕草属

Gradient sparsification for efficient wireless federated learning with differential privacy

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Science China(Information Sciences) 2024年第4期67卷 272-288页

作者： kang WEI Jun LI Chuan MA Ming ding Feng SHU Haitao ZHAO Wen CHEN Hongbo ZHU School of Electronic and Optical Engineering Nanjing University of Science and Technology Zhejiang Lab Key Laboratory of Computer Network and Information Integration(Southeast University) Ministry of Education Data61 Commonwealth Scientific and Industrial Research Organisation School of Information and Communication Engineering Hainan University School of Communications and Information Engineering Nanjing University of Posts and Telecommunications School of Electronic Information and Electrical Engineering Shanghai Jiao Tong University

Federated learning(FL) enables distributed clients to collaboratively train a machine learning model without sharing raw data with each other. However, it suffers from the leakage of private information from uploading models. In addition, as the model size grows, the training latency increases due to the limited transmission bandwidth and model performance degradation while using differential privacy(DP)protection. In this paper, we propose a gradient sparsification empowered FL framework with DP over wireless channels, to improve training efficiency without sacrificing convergence performance. Specifically, we first design a random sparsification algorithm to retain a fraction of the gradient elements in each client’s local model, thereby mitigating the performance degradation induced by DP and reducing the number of transmission parameters over wireless channels. Then, we analyze the convergence bound of the proposed algorithm, by modeling a non-convex FL problem. Next, we formulate a time-sequential stochastic optimization problem for minimizing the developed convergence bound, under the constraints of transmit power, the average transmitting delay, as well as the client’s DP requirement. Utilizing the Lyapunov drift-plus-penalty framework, we develop an analytical solution to the optimization problem. Extensive experiments have been implemented on three real-life datasets to demonstrate the effectiveness of our proposed algorithm. We show that our proposed algorithms can fully exploit the interworking between communication and computation to outperform the baselines, i.e., random scheduling, round robin, and delay-minimization algorithms.

关键词： federated learning differential privacy gradient sparsification Lyapunov drift convergence analysis

Design strategies for rechargeable aqueous metal-ion batteries

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Science China Chemistry 2024年第1期67卷 165-190页

作者： Yang Li Xin Zhao Yifu Gao Yichen ding Zhichun Si Liubing Dong Dong Zhou Feiyu kang Tsinghua Shenzhen International Graduate School Tsinghua UniversityShenzhen 518055China College of Chemistry and Materials Science Jinan UniversityGuangzhou 511443China

Rechargeable aqueous metal-ion batteries(AMBs)have attracted extensive scientific and commercial interest due to their potential for cost-effective,highly safe,and scalable stationary energy ***,their limited output voltage,inadequate energy density,and poor reversibility of ambiguous electrode reactions in aqueous electrolytes strongly limit their practical *** review aims to elucidate the challenges of existing AMBs from the material design to whole device *** summarize the emerging electrochemistry,fundamental properties,and key issues in interfacial behaviors of various classes of prevailing AMBs,including aqueous alkali metal-ion batteries and multivalent-ion batteries,and present an appraisal of recent advances for addressing the performance ***,the progress of zinc-ion batteries is highlighted to provide a ubiquitous guideline for their commercialization in the grid-scale energy ***,we figure out the dominating general challenges for achieving high-performance AMBs,laying out a perspective for future breakthroughs.

关键词： aqueous metal-ion batteries aqueous alkali metal-ion batteries zinc-ion batteries interfacial behavior stationary energy storage

Study on the Mitochondrial Genome of Sea Island Cotton(Gossypium barbadense) by BAC Library Screening

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Journal of Integrative Agriculture 2014年第5期13卷 945-953页

作者： SU Ai-guo LI Shuang-shuang LIU Guo-zheng LEI Bin-bin kang ding-ming LI Zhao-hu MA Zhi-ying HUA Jin-ping Key Laboratory of Crop Heterosis and Utilization Ministry of Education/Beijing Key Laboratory of Crop Genetic Improvement/College of Agronomy and Biotechnology China Agricultural University College of Agronomy Hebei Agricultural University

The plant mitochondrial genome displays complex features, particularly in terms of cytoplasmic male sterility （CMS）. Therefore, research on the cotton mitochondrial genome may provide important information for analyzing genome evolution and exploring the molecular mechanism of CMS. In this paper, we present a preliminary study on the mitochondrial genome of sea island cotton （Gossypium barbadense） based on positive clones from the bacterial artificial chromosome （BAC） library. Thirty-five primers designed with the conserved sequences of functional genes and exons of mitochondria were used to screen positive clones in the genome library of the sea island cotton variety called Pima 90-53. Ten BAC clones were obtained and verified for further study. A contig was obtained based on six overlapping clones and subsequently laid out primarily on the mitochondrial genome. One BAC clone, clone 6 harbored with the inserter of approximate 115 kb mtDNA sequence, in which more than 10 primers fragments could be amplified, was sequenced and assembled using the Solexa strategy. Fifteen mitochondrial functional genes were revealed in clone 6 by gene annotation. The characteristics of the syntenic gene/exon of the sequences and RNA editing were preliminarily predicted.

关键词： Gossypium barbadense BAC library mitochondrial genome RNA editing