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Emerging potential of ubiquitin-specific proteases and ubiquitinspecific proteases inhibitors in breast cancer treatment

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World Journal of Clinical Cases 2022年第32期10卷 11690-11701页

作者： mei-ling huang Guang-Tai Shen Nan-Lin Li Department of Thyroid Breast and Vascular SurgeryXijing HospitalThe Fourth Military Medical UniversityXi’an 710032Shaanxi ProvinceChina Department of Breast Surgery Xing'an League People's HospitalUlanhot 137400Inner Mongolia Autonomous RegionChina

Breast cancer is the most frequently diagnosed cancer in women,accounting for 30%of new diagnosing female *** evidence suggests that ubiquitin and ubiquitination played a role in a number of breast cancer etiology and progression *** the primary deubiquitinases in the family,ubiquitin-specific peptidases(USPs)are thought to represent potential therapeutic *** role of ubiquitin and ubiquitination in breast cancer,as well as the classification and involvement of USPs are discussed in this review,such as USP1,USP4,USP7,USP9X,USP14,USP18,USP20,USP22,USP25,USP37,and *** reported USPs inhibitors investigated in breast cancer were also summarized,along with the signaling pathways involved in the investigation and its study *** no USP inhibitor has yet been approved for clinical use,the biological efficacy indicated their potential in breast cancer *** the improvements in phenotypic discovery,we will know more about USPs and USPs inhibitors,developing more potent and selective clinical candidates for breast cancer.

关键词： Ubiquitin-specific proteases USPs inhibitors Breast cancer Review

FoxO4 is the main forkhead transcriptional factor localized in the gastrointestinal tracts of pigs

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2007年第1期8卷 39-44页

作者： ZHOU Zhen-qi WANG Tian PAN ling-mei huang Rui-hua SHI Fang-xiong College of Animal Science and Technology Nanjing Agricultural University Nanjing 210095 China

Forkhead box （Fox） proteins play critical roles in the regulation of differentiation, proliferation, immunity and aging of cells. Most studies on Fox proteins are limited to cultured cells and rodent. The aim of the current study is to detect by immunohistrochemistry whether FoxO1, FoxO3a and FoxO4 proteins are localized in the stomach and intestine of the pig. The results showed that FoxO4 exists in the mucosa in all parts of the stomach and intestine; FoxO3a exists mainly in the lamina propria and muscularis of some parts. However, FoxOl is not detectable in all parts of the stomach and intestine. Collectively, the results of the present study indicate that there exists a distinct expression pattern of Fox proteins, and that FoxO4 is a primary forkhead transcriptional factor localized in the gastrointestinal tracts of the pig.

关键词： Forkhead FoxO Gastrointestinal tract Immunohistochemistry Swine

Performance enhancement of a viscoelastic bistable energy harvester using time-delayed feedback control

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Chinese Physics B 2024年第6期33卷 142-154页

作者：黄美玲杨勇歌刘洋 School of Mathematics and Statistics Guangdong University of TechnologyGuangzhou 510520China State Key Laboratory for Strength and Vibration of Mechanical Structures Xi'an Jiaotong UniversityXi'an 710049China Exeter Small-Scale Robotics Laboratory Engineering DepartmentUniversity of ExeterNorth Park RoadExeter EX44QFUK

This paper focuses on the stochastic analysis of a viscoelastic bistable energy harvesting system under colored noise and harmonic excitation, and adopts the time-delayed feedback control to improve its harvesting efficiency. Firstly, to obtain the dimensionless governing equation of the system, the original bistable system is approximated as a system without viscoelastic term by using the stochastic averaging method of energy envelope, and then is further decoupled to derive an equivalent system. The credibility of the proposed method is validated by contrasting the consistency between the numerical and the analytical results of the equivalent system under different noise conditions. The influence of system parameters on average output power is analyzed, and the control effect of the time-delayed feedback control on system performance is compared. The output performance of the system is improved with the occurrence of stochastic resonance(SR). Therefore, the signal-to-noise ratio expression for measuring SR is derived, and the dependence of its SR behavior on different parameters is explored.

关键词： energy harvesting bistability stochastic averaging method stochastic resonance time-delayed feedback control

Fetal distress prediction using discriminant analysis, decision tree, and artificial neural network

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Journal of Biomedical Science and Engineering 2012年第9期5卷 526-533页

作者： mei-ling huang Yung-Yan Hsu Department of Industrial Engineering & Management National Chin-Yi University of Technology Taichung Chinese Taipei

Fetal distress is one of the main factors to cesarean section in obstetrics and gynecology. If the fetus lack of oxygen in uterus, threat to the fetal health and fetal death could happen. Cardiotocography (CTG) is the most widely used technique to monitor the fetal health and fetal heart rate (FHR) is an important index to identify occurs of fetal distress. This study is to propose discriminant analysis (DA), decision tree (DT), and artificial neural network (ANN) to evaluate fetal distress. The results show that the accuracies of DA, DT and ANN are 82.1%, 86.36% and 97.78%, respectively.

关键词： Fetal Distress Cardiotocography (CTG) Discriminant Analysis Decision Tree Artificial Neural Network

Effect of EDTA and NH_4Cl additives on electrodeposition of Zn-Ni films from choline chloride-based ionic liquid

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Transactions of Nonferrous Metals Society of China 2015年第6期25卷 2054-2064页

作者： S.FASHU 谷长栋张嘉磊黄美玲王秀丽涂江平浙江大学硅材料国家重点实验室杭州310027 浙江大学材料科学与工程学院杭州310027

Two additives of ethylene diamine tetraacetic acid （EDTA） and ammonium chloride （NH4C1） were separately used in the electrodeposition of Zn-Ni alloy films from a deep eutectic solvent. The effects of these two additives on electrodeposition behavior, composition, morphology, and corrosion performance of the Zn-Ni alloys were investigated. The electrodeposition behaviors of Zn-Ni alloy revealed by the cyclic voltammetry show that the addition of EDTA to the Zn-Ni electrolyte enhances the Zn incorporation into the alloy film while the addition of NH4C1 produces an opposite effect by suppressing Zn incorporation into the film. With an increase of EDTA concentration in the electrolyte, the Zn content of the Zn-Ni films increases, while the grain size of the deposits and the current efficiency of the plating process decrease. The increase of NH4C1 concentration in the electrolyte would significantly refine the grain size of the electrodeposited Zn-Ni films, reduce the Zn content and increase the cathodic current efficiency. The corrosion testing indicates that the barrier corrosion resistances of Zn-Ni films electrodeposited from NHnC1 containing electrolytes are superior to those electrodeposited from EDTA-containing electrolytes, which in turn are superior to those electrodeposited from additive-free electrolytes.

关键词： additive EDTA NH4C1 deep eutectic solvent corrosion resistance

急性下呼吸道感染患儿人冠状病毒感染状况研究

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中华医院感染学杂志 2017年第12期27卷 2813-2816页

作者：单淑琴夏科君干冬梅华玲玲黄静宁波市妇女儿童医院儿内科浙江宁波315000

目的探讨住院急性下呼吸道感染患儿人冠状病毒感染状况,为临床防治提供理论依据。方法选择2013年1月-2015年12月医院就诊急性下呼吸道感染的患儿3140例,36例单纯人冠状病毒(HCoV)感染患儿为研究组,在其余3012例非人冠状病毒感染患儿中... 详细信息

目的探讨住院急性下呼吸道感染患儿人冠状病毒感染状况,为临床防治提供理论依据。方法选择2013年1月-2015年12月医院就诊急性下呼吸道感染的患儿3140例,36例单纯人冠状病毒(HCoV)感染患儿为研究组,在其余3012例非人冠状病毒感染患儿中选择与研究组一般资料无差异的患儿60例为对照组;采集所有患儿入院1d内的鼻咽吸取物或者鼻咽拭子标本1份,并于72小时内送检;对3140例下呼吸道感染患儿中人冠状病毒感染情况及临床特征进行分析。结果 3140例患儿共检出流感病毒224例,呼吸道合胞病毒652例,多瘤病毒KI173例,多瘤病毒WU 192例,人偏肺病毒257例,人冠状病毒128例,副流感病毒572例,腺病毒358例,鼻病毒584例其中人冠状病毒感染阳性率为4.08%,单纯感染患儿36例,其中HCoV-HKUI、HCoV-OC43、HCoV-229E、HCoV-NL63、HCoV-EMC、SARS-CoV分别为6例,12例、6例、6例、3例、3例;研究组患儿咳嗽、呼吸衰竭、腹泻、发热、喘息和低氧血症比例显著高于对照组(P<0.05);27例患儿出现吸气相湿啰音和双肺呼气相喘鸣音,30例患儿胸部影像学表现支气管炎,3例为喉气管炎,3例为毛细支气管炎,9例患儿表现出肺部实变影,24例患儿表现出过度通气现象。结论下呼吸道感染患儿人冠状病毒感染,咳嗽为首发症状,同时伴随呼吸急促、喘息,多数伴随发热,肺部听诊表现呼气相高调喘鸣声和细湿罗音,部分患儿伴有腹泻症状。对于临床诊断为以上症状的儿童,应该积极采取措施,对患者感染病毒进行检测,进行针对性治疗。

关键词：急性下呼吸道感染儿童人冠状病毒感染

白杨素对顺铂及喜树碱诱导肝肿瘤细胞HepG2凋亡的增敏作用

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中国药学杂志 2016年第24期51卷 2088-2093页

作者：王剑宁李欣陈美芬王凤岩熊习昆陈秀娟杨美玲黄俊明中山大学光华口腔医学院附属口腔医院口腔颌面外科广东省口腔医学重点实验室广州510055 广东省疾病预防控制中心卫生毒理所广州511430

目的研究天然产物白杨素(chrysin)对损伤DNA的抗肿瘤药物顺铂和喜树碱诱导肝肿瘤细胞(Hep G2)死亡的作用及机制。方法白杨素以不同浓度单独/联合顺铂或喜树碱处理Hep G2,于倒置显微镜下观察肿瘤细胞形态变化,以四甲基偶氮唑蓝(MTT)法分... 详细信息

目的研究天然产物白杨素(chrysin)对损伤DNA的抗肿瘤药物顺铂和喜树碱诱导肝肿瘤细胞(Hep G2)死亡的作用及机制。方法白杨素以不同浓度单独/联合顺铂或喜树碱处理Hep G2,于倒置显微镜下观察肿瘤细胞形态变化,以四甲基偶氮唑蓝(MTT)法分析细胞活性,获得细胞死亡的定量资料;并以Western blot方法分析凋亡标志蛋白caspase-3和多聚(ADP-核糖)聚合酶(PARP)以及凋亡抑制蛋白Bcl-x L、x IAP、FLIP相应的变化情况。结果形态学观察可发现白杨素联合顺铂或喜树碱处理可明显增加Hep G2细胞的死亡,MTT法分析显示,白杨素联合抗肿瘤药物处理细胞,无论与未处理对照比较还是与单独白杨素、单独顺铂或单独喜树碱处理比较,均使细胞活性显著降低(P<0.05);Hochest 33342荧光染色表明,联合白杨素和抗肿瘤药物处理细胞可观察到明显的核固缩,而未处理对照及单独白杨素、单独顺铂或喜树碱处理则无此作用;Thermo高内涵筛选系统分析结果显示,联合白杨素和抗肿瘤药物处理可使凋亡细胞显著增加(P<0.05)。Western blot检测到凋亡标志蛋白caspase-3和PARP活化降解;全caspase酶抑制剂z-VAD-fmk可有效阻止凋亡标志蛋白caspase-3和PARP的活化降解。白杨素联合顺铂可抑制顺铂上调的凋亡抑制蛋白FLIP和x IAP表达,而白杨素联合喜树碱可降低喜树碱引起的凋亡抑制蛋白Bcl-x L的高表达。结论天然产物白杨素能有效促进DNA损伤类抗肿瘤药物诱导的Hep G2细胞凋亡,核因子(NF)-κB调节的凋亡抑制蛋白表达降低是其重要的机制。

关键词：白杨素顺铂喜树碱凋亡核因子-kB

Correlations of the expression of Cx43,SCFFBXW7,p-cyclin E1(Ser73),p-cyclin E1(Thr77)and p-cyclin E1(Thr395)in colon cancer tissues

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World Journal of Gastrointestinal Oncology 2025年第1期17卷 207-213页

作者： Rong-Gang Luan Ming-Da Liu Zi-Feng Deng Cong-Lan Lu mei-ling Yu Ming-Yu Zhang Rong Liu Ran An You-Liang Yao Dong-Bei Guo Yong-Xing Zhang Lei Zhao Department of Gastrointestinal Surgery Air Force Hospital of Eastern TheaterAnhui Medical UniversityNanjing 230032Jiangsu ProvinceChina State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics School of Public HealthXiamen UniversityXiamen 361102Fujian ProvinceChina Trauma Surgery Air Force Hospital of Eastern TheaterAnhui Medical UniversityNanjing 230032Jiangsu ProvinceChina Department of Orthopaedics Air Force Hospital of Eastern TheaterAnhui Medical UniversityNanjing 230032Jiangsu ProvinceChina

BACKGROUND Previous cellular studies have demonstrated that elevated expression of Cx43 promotes the degradation of cyclin E1 and inhibits cell proliferation through ***,reduced expression results in a loss of this capacity to facilitate cyclin E *** ubiquitination and degradation of cyclin E1 may be associated with phosphorylation at specific sites on the protein,with Cx43 potentially enhancing this process by facilitating the phosphorylation of these critical *** To investigate the correlation between expression of Cx43,SKP1/Cullin1/F-box(SCF)FBXW7,p-cyclin E1(ser73,thr77,thr395)and clinicopathological indexes in colon *** Expression levels of Cx43,SCFFBXW7,p-cyclin E1(ser73,thr77,thr395)in 38 clinical colon cancer samples were detected by immunohistochemistry and were analyzed by statistical methods to discuss their *** Positive rate of Cx43,SCFFBXW7,p-cyclin E1(Ser73),p-cyclin E1(Thr77)and p-cyclin E1(Thr395)in detected samples were 76.32%,76.32%,65.79%,5.26%and 55.26%*** expressions of these proteins were not related to the tissue type,degree of tissue differentiation or lymph node ***43 and SCFFBXW7(r=0.749),p-cyclin E1(Ser73)(r=0.667)and p-cyclin E1(Thr395)(r=0.457),SCFFBXW7 and p-cyclin E1(Ser73)(r=0.703)and p-cyclin E1(Thr395)(0.415)were correlated in colon cancer(P<0.05),and expressions of the above proteins were positively correlated in colon *** Cx43 may facilitate the phosphorylation of cyclin E1 at the Ser73 and Thr195 sites through its interaction with SCFFBXW7,thereby influencing the ubiquitination and degradation of cyclin E1.

关键词： Colon cancer Cx43 SCFFBXW7 Phosphorylation of cyclin E1 Sites of cyclin E1 Correlation analysis

Preliminary clinical study of the hemodynamic changes in patients with primary hypertension by wave intensity

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Preliminary clinical study of the hemodynamic changes in pat...