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Effects of sense and antisense centromere/kinetochore complex protein-B (CENP-B) in cell cycle regulation

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Chinese Science Bulletin 2005年第24期50卷 2836-2843页

作者： LUO Song LIN Haiyan QI Jianguo wang yongchao Key laboratory of cell Proliferation and Regulation {2. of Ministry of Education College of Life Sciences Beijing Normal University Beijing 100875 China

This paper investigates the effects of sense and antisense centromere/kinetochore complex protein-B (CENP-B) in cell cycle regulation. Full-length cenpb cDNA was subcloned into pBI-EGFP eukaryotic expression vector in both sense and antisense orientation. HeLa-Tet-Off cells were transfected with sense or antisense cenpb vectors. Sense transfection of HeLa-Tet-Off cells resulted in the formation of a large centromere/kinetochore complex, and apoptosis of cells following several times of cell division. A stable an- tisense cenpb transfected cell line, named HACPB, was ob- tained. The centromere/kinetochore complex of HACPB cells became smaller than control HeLa-Tet-Off cells and scat- tered, and the expression of CENP-B was down-regulated. In addition, delayed cell cycle progression, inhibited malignant phenotype, restrained ability of tumor formation in nude mice, and delayed entry from G2.M phase into next G1 phase were observed in HACPB cells. Furthermore, the ex- pression of cyclin-dependent kinases (CDKs), cyclins, and CDK inhibitors (CKIs) were modulated during different phases of the cell cycle. CENP-B is an essential protein for the maintenance of the structure and function of centro- mere/kinetochore complex, and plays important roles in cell cycle regulation.

关键词：细胞周期着丝粒/着丝点复合蛋白 CENP-B 反义转染

营养控制状态评分对晚期弥漫大B细胞淋巴瘤患者预后的预测价值

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白血病．淋巴瘤 2024年第2期33卷 104-109页

作者：单慧蓉陈玺丞张颢苗雨青王飞史玉叶王玲叶静静沈子园桑威葛洪峰宿迁市沭阳县中医院血液科宿迁223600 徐州医科大学附属医院血液科徐州221002 济宁医学院附属医院血液科济宁272000 盐城市第一人民医院血液科盐城224001 常州市第一人民医院血液科常州213003 淮安市第一人民医院血液科淮安223000 泰安市中心医院血液科泰安271000 山东大学齐鲁医院血液科济南250012 安徽医科大学公共卫生学院合肥230032 亳州市人民医院血液科亳州236800

目的探讨营养控制状态(CONUT)评分对晚期弥漫大B细胞淋巴瘤(DLBCL)患者预后的预测价值。方法回顾性病例系列研究。回顾性收集2.09年10月至2.2.年1月淮海淋巴瘤协作组中7家医疗中心确诊的654例初诊晚期DLBCL患者的临床资料,所有患者均接... 详细信息

目的探讨营养控制状态(CONUT)评分对晚期弥漫大B细胞淋巴瘤(DLBCL)患者预后的预测价值。方法回顾性病例系列研究。回顾性收集2.09年10月至2.2.年1月淮海淋巴瘤协作组中7家医疗中心确诊的654例初诊晚期DLBCL患者的临床资料,所有患者均接受以利妥昔单抗为基础的免疫化疗方案治疗。按照7∶3比例将患者随机分配为训练集(458例)和验证集(196例)。收集患者临床病理资料,根据清蛋白、淋巴细胞计数和总胆固醇计算CONUT评分。根据MaxStat统计量确定CONUT评分的最佳临界值。采用Kaplan-Meier法绘制生存曲线;采用Cox比例风险模型对总生存(OS)的影响因素进行单因素、多因素分析;采用受试者工作特征(ROC)曲线评估CONUT评分分别联合国际预后指数(IPI)、改良国际预后指数(NCCN-IPI)预测OS的效能。结果654例患者中位随访时间为38.1个月(95%CI:35.3~40.9个月),5年OS率为49.2.。根据MaxStat统计量确定CONUT评分的最佳临界值为6分,将患者分为营养状况正常组(CONUT评分≤6分)(489例)和营养状况不良组(CONUT评分>6分)(165例)。多因素分析结果显示,CONUT评分>6分、男性、乳酸脱氢酶>2.0 U/L、高白细胞计数、低血红蛋白水平、年龄>60岁是晚期DLBCL患者OS的独立危险因素(均P6分)OS较营养状况正常组(CONUT评分≤6分)差(P1);亚组分析结果表明,在ECOG PS评分2.、IPI低中危险、IPI中高危、NCCN-IPI低中危、NCCN-IPI中高危的患者中,营养状况不良组(CONUT评分>6分)患者OS较营养状况正常组(CONUT评分≤6分)差(均P<0.05)。结论CONUT评分评估晚期DLBCL患者预后具有一定的价值,且CONUT评分联合IPI、NCCN-IPI的预测效能进一步提高。

关键词：淋巴瘤,大B细胞,弥漫性营养评价预后

基于人工神经网络的PV/T热电联供系统性能预测

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农业工程学报 2024年第6期40卷 309-318页

作者：贺斌李岚卿程江勇超周希正张丽梁晓春江西科技师范大学土木工程学院南昌330000

为研究太阳能PV/T热电联供系统的性能和针对太阳能PV/T系统复杂的能量平衡方程,搭建了太阳能PV/T系统试验台,同时建立了基于改进灰狼优化的BP神经网络(back propagation neural network model based on improved grey wolf algorithm,IG... 详细信息

为研究太阳能PV/T热电联供系统的性能和针对太阳能PV/T系统复杂的能量平衡方程,搭建了太阳能PV/T系统试验台,同时建立了基于改进灰狼优化的BP神经网络(back propagation neural network model based on improved grey wolf algorithm,IGWO-BP)预测模型,在晴朗天气下进行试验,并采用该模型对系统电功率以及蓄热水箱内水温进行预测。结果显示,晴朗日系统的电效率8.7%~12.2.、热效率51.7%;预测结果与BP神经网络预测模型、基于粒子群优化的BP神经网络(back propagation neural network based on particle swarm optimization,PSO-BP)预测模型和卷积神经网络(convolutional neural network,CNN)预测模型预测结果进行比较,结果显示IGWO-BP预测模型电效率预测模型的绝对百分比误差(mean absolute percentage error,MAPE)、决定系数(determination coefficient,R^(2.)、均方根误差(root mean square error,RMSE)、效率因子(efficient factor,EF)和Pearson相关系数(pearson related coefficient,r)分别为4.5E-05、0.99、0.2.、0.99和1.00,在储热罐温度预测中,上述指标分别为8.90E-04、0.98、0.07、0.98、0.99,均优于其他预测模型,IGWO-BP神经网络预测模型具有更好的预测性能。研究结果可为太阳能PV/T热电联供系统性能预测与优化控制提供参考。

关键词：性能预测 BP神经网络 PV/T 改进的灰狼算法

Targeted nanoparticles for precise cancer therapy

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Science china(Life Sciences) 2019年第10期62卷 1392-1395页

作者： Jinjin wang yongchao wang Ruifang wang Shouwen Zhang Xiaoxuan Liu Xing-Jie Liang CAS Center for Excellence in Nanoscience CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety Chinese Academy of SciencesNational Center for Nanoscience and Technology of ChinaBeijing 100190China university of Chinese Academy of Sciences Beijing 100049China State Key laboratory of Natural Medicines and Jiangsu Key laboratory of Drug Discovery for Metabolic Diseases Center of Advanced Pharmaceutics and BiomaterialsCenter of Drug DiscoveryInstitute of Pharmaceutical SciencesChina Pharmaceutical University Nanjing 210009China Epilepsy department Beijing Chaoyang Emergency Medical CenterBeijing 100122China

Cancer has become one of the biggest challenges in the development of modern medical science. In particular, many problems, such as low efficiency, severe side effects, metastasis, and tumor invasion, challenge the development of precise cancer therapy. Continuous advancements in medicine, however, have allowed clear differentiation between tumors and normal tissues that can be exploited for cancer therapeutics. Unlike normal {2.s, tumor {2.s have an uncontrollable growth and are infinitely proliferative. These physical, chemical, and biological differences (e.g., metabolic states, high {2. density, ability to grow in hypoxic and low pH conditions, and expression of different specific receptors/ ligands) may provide a new perspective for the development of cancer therapeutics. Traditional antitumor drugs have disadvantages, such as poor solubility, insufficient bioavailability in the body, numerous side effects, and development of chemoresistance, all of which greatly limit their therapeutic efficacy.

关键词： medical science cell density

PSMA4在肺腺癌预后、诊断和免疫浸润中的作用和机制研究

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陆军军医大学学报 2024年第17期46卷 1985-1993页

作者：赵静李艳梅王雪樾聂恬王洁翁启明张静范晔陆军军医大学(第三军医大学)第二附属医院临床技能培训中心重庆400037 中国人民解放军西部战区总医院检验科成都610083 中国人民解放军西藏军区总医院儿科拉萨850000 四川省人民医院消化内镜中心成都610072 陆军军医大学(第三军医大学)第二附属医院野战内科研究所重庆400037 陆军军医大学(第三军医大学)第二附属医院呼吸科重庆400037

目的探究PSMA4在肺腺癌(lung adenocarcinoma,LUAD)预后、诊断和免疫浸润中的作用和机制。方法从癌症基因组图谱(the cancer genome atlas,TCGA)数据库中获取LUAD患者的表达谱和临床信息。通过Wilcoxon秩和检验比较LUAD组(n=539)与正常... 详细信息

目的探究PSMA4在肺腺癌(lung adenocarcinoma,LUAD)预后、诊断和免疫浸润中的作用和机制。方法从癌症基因组图谱(the cancer genome atlas,TCGA)数据库中获取LUAD患者的表达谱和临床信息。通过Wilcoxon秩和检验比较LUAD组(n=539)与正常组(n=59)PSMA4基因的表达水平。通过在GEO数据库下载GSE40791和GSE10072.LUAD数据集,验证PSMA4在LUAD组与正常组中的表达水平。收集10对2.2.年1-12.在陆军军医大学第二附属医院呼吸科进行纤维支气管镜肺活检术的LUAD患者的肿瘤和癌旁组织样本。采用RT-qPCR技术验证PSMA4在10对LUAD和癌旁组织中的表达。体外培养肺癌细胞和正常肺上皮细胞,通过RT-qPCR检测PSMA4在各组细胞中的表达。并对PSMA4的高低表达组进行了功能富集分析和免疫细胞浸润分析,通过Cox回归分析和Kaplan-Meier(KM)法确定PSMA4对于LUAD的诊断和预后的价值,并构建列线图预测不同时间点的总生存率。结果TCGA数据集、GSE40791和GSE10072.LUAD数据集中的表达数据显示,PSMA4在LUAD组中的表达明显高于正常组(P1)。RT-qPCR检测分析发现,PSMA4在LUAD和肺癌细胞中的表达显著高于癌旁组织和正常肺上皮细胞(P1)。PSMA4高表达是诊断LUAD和预后不良的标志物,与肿瘤微环境中效应记忆性T细胞、滤泡辅助性T细胞、B淋巴细胞、自然杀伤细胞、中央记忆性T细胞、肥大细胞的水平的降低有关。结论PSMA4对LUAD有良好的诊断效能,并且与LUAD的预后和免疫浸润密切相关。

关键词：肺腺癌 PSMA4 预后诊断免疫浸润

Identification of a novel resident centrosomal protein

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Chinese Science Bulletin 2001年第1期46卷 21-26页

作者： CHEN Xiaobo wang yongchao LI Yongzhe GUI Jingtao College of Life Science Beijing Normal UniversityBeijing 100875China Peking Union Medical College Chinese Academy of Medical SciencePeking Union Medical CollegeHospital Clinical LaboratoryBeijing 100005China

One human autoimmune serum was identified to react with centrosomes by immunofluorescence. We applied the affinity purification of membrane-bound antibody technique and demonstrated that the antibodies present in this antiserum reacted with a 31/2. ku centrosomal antigen. Immunofluorescence showed that this antigen is located at cen-trosome in a cell-cycle independent manner, and thereby it belongs to the family of centrosomal residents. We then utilized this autoimmune serum and antibodies against centrin and gamma-tubulin to investigate changes of centrosome cycle kinetics during premature chromosome condensation (PCC) artificially induced in V79-8 cells. We show here that centrosomal proteins continue to express when cells are syn-chronized at G1/S boundary and S phase by Hydroxyurea (HU). During this tune, the addition of caffeine causes cells with unreplicated genome to go into mitosis, and induces the separation of the replicated centrosomes. These results suggest that the coordination of DNA

关键词： human autoimmune serum 31/2. ku antigen centro-some mitosis with unreplicated genome (MUG) mitosis promoting factor (MPF).

缺氧对急性硬膜下血肿大鼠发生外伤性脑肿胀的影响

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中华创伤杂志 2024年第9期40卷 826-836页

作者：鲜亮陈力林珑叶丹魏梁锋王守森福建医科大学福总临床医学院(第九〇〇医院)神经外科福州350025

目的探讨缺氧对急性硬膜下血肿(ASDH)大鼠发生外伤性脑肿胀(TBS)的影响。方法取45只SD大鼠,按随机数字表法分为五组,每组9只:假手术常氧组,作假手术操作,置于密闭容器中通入空气;假手术缺氧组,作假手术操作,置于氧气体积分数8%的密闭容... 详细信息

目的探讨缺氧对急性硬膜下血肿(ASDH)大鼠发生外伤性脑肿胀(TBS)的影响。方法取45只SD大鼠,按随机数字表法分为五组,每组9只:假手术常氧组,作假手术操作,置于密闭容器中通入空气;假手术缺氧组,作假手术操作,置于氧气体积分数8%的密闭容器中进行缺氧诱导;ASDH常氧组,制作ASDH模型,置于密闭容器中通入空气;ASDH缺氧组,制作ASDH模型,置于氧气体积分数8%的密闭容器中进行缺氧诱导;ASDH缺氧+吸氧组,制作ASDH模型并缺氧诱导后持续吸入体积分数40%的氧气。每组各取6只大鼠在造模后立即通过开颅观察术中脑膨出的情况,评估TBS程度;使用激光散斑成像系统在造模前、开颅术前、开颅术后即刻观察微血管血流量。每组剩余3只大鼠分别在造模后直接处死,取脑组织标本。Western blot检测造模后0、30、60 min的周细胞α⁃平滑肌肌动蛋白(α⁃SMA)和血小板衍生生长因子受体⁃β(PDGFR⁃β)蛋白表达量。免疫荧光染色检测造模后0 min的周细胞α⁃SMA、PDGFR⁃β和微血管标记物血小板⁃内皮细胞黏附分子31(CD31)的表达情况。结果造模后,假手术常氧组无脑膨出;假手术缺氧组脑膨出高度为0.5(0.0,1.0)mm,与假手术常氧组差异无统计学意义(P>0.05);ASDH常氧组脑膨出高度为2.2.2.2.5)mm,较假手术常氧组和假手术缺氧组均显著增高(P1);ASDH缺氧组脑膨出高度为3.1(2.9,3.2.mm,较假手术常氧组、假手术缺氧组和ASDH常氧组均显著增高(P1);ASDH缺氧+吸氧组脑膨出高度为2.8(2.7,2.9)mm,较ASDH缺氧组差异无统计学意义(P>0.05),较假手术常氧组、假手术缺氧组和ASDH常氧组显著增高(P1)。造模前、开颅术前和开颅术后,假手术常氧组微血管血流量分别为2.4.2.49.7、2.4.8±50.3、2.5.1±50.3,假手术缺氧组分别为2.4.7±43.7、2.0.9±45.9、2.1.8±45.5,两组间差异均无统计学意义(P>0.05);ASDH常氧组微血管血流量分别为2.6.5±52.7、173.4±40.7、172.0±40.7,较假手术常氧组、假手术缺氧组均显著下降(P2.5.7±46.4、131.4±2..6、131.0±2..5,较假手术常氧组、假手术缺氧组、ASDH常氧组均显著下降(P2.6.2.56.1、132.6±2..7、131.7±2..9,较假手术常氧组、假手术缺氧组、ASDH常氧组均显著下降(P0.05)。造模后0、30、60 min,假手术常氧组α⁃SMA表达量分别为0.70±0.02.0.67±0.01、0.55±0.05,PDGFR⁃β表达量分别为0.65±0.03、0.56±0.03、0.59±0.02.假手术缺氧组α⁃SMA表达量分别为0.63±0.04、0.60±0.01、0.55±0.05,PDGFR⁃β表达量分别为0.62.0.01、0.51±0.01、0.60±0.02.两组间差异均无统计学意义(P>0.05);ASDH常氧组α⁃SMA表达量分别为0.88±0.06、0.87±0.05、0.82.0.03,PDGFR⁃β表达量分别为0.85±0.03、0.85±0.03、0.88±0.04,较假手术常氧组和假手术缺氧组均显著增高(P1);ASDH缺氧组α⁃SMA表达量分别为1.19±0.08、1.10±0.10、0.97±0.04,PDGFR⁃β表达量分别为1.04±0.06、1.19±0.07、1.2.±0.08,较假手术常氧组、假手术缺氧组和ASDH常氧组均显著增高(P1);ASDH缺氧+吸氧组α⁃SMA表达量分别为1.2.±0.07、1.10±0.04、0.96±0.04,PDGFR⁃β表达量分别为1.04±0.05、1.15±0.11、1.2.±0.07,较假手术常氧组、假手术缺氧组和ASDH常氧组均显著增高(P1),较ASDH缺氧组差异均无统计学意义(P>0.05)。造模后0 min,假手术常氧组α⁃SMA和PDGFR⁃β荧光表达较弱,CD31荧光表达较强。假手术缺氧组α⁃SMA、PDGFR⁃β和CD31与假手术常氧组荧光表达强弱差异不大;ASDH常氧组α⁃SMA和PDGFR⁃β较假手术常氧组和假手术缺氧组荧光表达更强,而CD31荧光表达更弱;ASDH缺氧组α⁃SMA和PDGFR⁃β较假手术常氧组、假手术缺氧组和ASDH常氧组荧光表达更强,CD31荧光表达更弱;ASDH缺氧+吸氧组α⁃SMA和PDG

关键词：脑损伤大鼠缺氧周细胞微循环

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^(35)S标记重组植物钙调素的制备方法

生物化学与生物物理进展 2002年第5期29卷 801-805页

作者：崔素娟郭晓强毛国红赵军峰孙颖白娟马力耕孙大业河北师范大学分子细胞生物学研究室石家庄050016

利用3 5S标记的氨基酸混合物喂养工程菌 ,成功地制备了3 5S标记的拟南芥钙调素亚型 2.(3 5S ACaM2.) ,对其纯度、放射活度、电泳行为及其灵敏性等进行了检测 .结果表明从工程菌中制备的3 5S ACaM 2.度高、放射活度高、Ca2.+ 与EGTA存... 详细信息

利用3 5S标记的氨基酸混合物喂养工程菌 ,成功地制备了3 5S标记的拟南芥钙调素亚型 2.(3 5S ACaM2.) ,对其纯度、放射活度、电泳行为及其灵敏性等进行了检测 .结果表明从工程菌中制备的3 5S ACaM 2.度高、放射活度高、Ca2.+ 与EGTA存在时的电泳行为与未标记的ACaM2.同。

关键词： ^35S标记重组植物钙调素制备方法工程菌拟南芥

CHCHD2.Thr61Ile mutation impairs F1F0-ATPase assembly in in vitro and in vivo models of Parkinson's disease

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Neural Regeneration Research 2024年第1期19卷 196-204页

作者： Xiang Chen Yuwan Lin Zhiling Zhang Yuting Tang Panghai ye Wei Dai Wenlong Zhang Hanqun Liu Guoyou Peng Shuxuan Huang Jiewen Qiu Wenyuan Guo Xiaoqin Zhu Zhuohua Wu Yaoyun Kuang Pingyi Xu Miaomiao Zhou department of Neurology The First Affiliated Hospital of Guangzhou Medical UniversityGuangzhouGuangdong ProvinceChina department of Neurology The People’s Hospital of Guangxi Zhuang Autonomous RegionNanningGuangxi Zhuang Autonomous RegionChina School of Basic Medical Sciences Guangzhou Medical UniversityGuangzhouGuangdong ProvinceChina department of Neurology Shanghai General HospitalShanghai Jiao Tong University School of MedicineShanghaiChina

Mitochondrial dysfunction is a significant pathological alte ration that occurs in Parkinson's disease(PD),and the Thr61lle(T61I)mutation in coiled-coil helix coiled-coil helix domain containing 2.CHCHD2.,a crucial mitochondrial protein,has been reported to cause Parkinson's ***-ATPase participates in the synthesis of cellular adenosine triphosphate(ATP)and plays a central role in mitochondrial energy ***,the specific roles of wild-type(WT)CHCHD2.and T611-mutant CHCHD2.in regulating F1FO-ATPase activity in Parkinson's disease,as well as whether CHCHD2.or CHCHD2.T61I affects mitochondrial function through regulating F1FO-ATPase activity,remain unclea ***,in this study,we expressed WT CHCHD2.and T61l-mutant CHCHD2.in an MPP^(+)-induced SH-SY5Y cell model of *** found that CHCHD2.protected mitochondria from developing MPP^(+)-induced *** {2. conditions,ove rexpression of WT CHCHD2.promoted F1FO-ATPase assembly,while T61I-mutant CHCHD2.appeared to have lost the ability to regulate F1FO-ATPase *** addition,mass spectrometry and immunoprecipitation showed that there was an interaction between CHCHD2.and *** weeks after transfection with AAV-CHCHD2.T61I,we intraperitoneally injected 1-methyl-4-phenyl-1,2.3,6-tetrahydropyridine into mice to establish an animal model of chronic Parkinson's disease and found that exogenous expression of the mutant protein worsened the behavioral deficits and dopaminergic neurodegeneration seen in this *** findings suggest that WT CHCHD2.can alleviate mitochondrial dysfunction in PD by maintaining F1F0-ATPase structure and function.

关键词： ATP synthase(F1F0-ATPase) coiled-coil helix coiled-coil helix domain containing 2 dopaminergic neuron mitochondrial dysfunction neurodegeneration oligomycin sensitivity-conferring protein Parkinson's disease T61I mutation tyrosine hydroxylase