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Creating nitrogen-vacancy ensembles in diamond for coupling with flux qubit

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Chinese Physics B 2017年第2期26卷 75-79页

作者： Ya-Rui zheng Jian Xing Yan-Chun Chang Zhi-Guang Yan Hui Deng Yu-Lin Wu Li Lu Xin-Yu Pan Xiao-Bo Zhu dong-ning zheng Institute of Physics Chinese Academy of Sciences Beijing 100190 China

Hybrid quantum system of negatively charged nitrogen–vacancy（NV^-） centers in diamond and superconducting qubits provide the possibility to extend the performances of both systems. In this work, we numerically simulate the coupling strength between NV^-ensembles and superconducting flux qubits and obtain a lower bound of 1016cm^（-3） for NV^-concentration to achieve a sufficiently strong coupling of 10 MHz when the gap between NV^-ensemble and flux qubit is 0. Moreover, we create NV^-ensembles in different types of diamonds by14^（N＋）and12（C＋）ion implantation, electron irradiation, and high temperature annealing. We obtain an NV^-concentration of 1.05 × 1016cm^（-3） in the diamond with1-ppm nitrogen impurity, which is expected to have a long coherence time for the low nitrogen impurity concentration. This shows a step toward performance improvement of flux qubit-NV^-hybrid system.

关键词： flux qubit nitrogen–vacancy center hybrid quantum system

Evaluation and clinical application of a new method for detecting ADAMTS13 activity

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Chinese Medical Journal 2010年第14期123卷 1859-1863页

作者： WANG An-you dong ning-zheng MA Zhen-ni ZHANG Jing-yu SU Jian RUAN Chang-geng Key Laboratory of Thrombosis and Hemostasis of Ministry of Health Jiangsu Institute of Hematology First Affiliated Hospital of Soochow University Suzhou Jiangsu 215006 China

Background A severe deficiency of ADAMTS13 activity contributes to the pathogenesis of thrombotic thrombocytopenic purpura （TTP）. Measuring the activity of ADAMTS13 is helpful for the diagnosis of TTP and the prognostic monitor in TTP patients. Most available assays are cumbersome and costly, so not easily adapted to routine laboratories. ADAMTS13 cleaves von Willebrand factor （VVVF） within the domain A2, located between domains A1 and A3. Therefore, specific assays for ADAMTS13 activity could be based on the different structures of VWF before and after the cleavage. Using this hypothesis we try to establish a new and simple method to determine ADAMTS13 activity. Methods First, plasma samples were exposed in denaturing condition to allow cleavage of VWF by ADAMTS13. Then, the ADAMTS13 activity was measured with two novel monoclonal antibodies, SZ-129 and SZ-125, which specifically recognize the VWF A1 and A3 domains by using a two-site sandwich ELISA. Compared with a residual-collagen binding assay （R-CBA）, plasma ADAMTS13 activities in 161 samples were assessed, and the inhibitory activities of ADAMTS13 autoantibody in 24 TTP patients were determined. The relationship of these two assays was analyzed by linear correlation, and the sensitivity and specificity of the new assay was also evaluated. Results Plasma ADAMTS13 activities in normal people and TTP, acute myocardial infarction （AMI）, and idiopathic thrombocytopenic purpura （ITP） patients determined by the new assay were （89.75±7.93）%, （17.63±18.71）%, （68.55±18.08）%, （85.83±9.84）%, respectively. Results were consistent with those of R-CBA, the squared correlation factor was 0.9183 of the two assays. The new assay can easily discriminate a ＂TTP plasma sample from a non-TTP plasma sample （P 〈0.01）, and the coefficient of variation for the new assay was 6.17%. In 23 idiopathic TTP patients, the inhibitor activity of ADAMTS13 autoantibody ranged from 12% to 100%, while no inhibitory activity was detected in one her

关键词： von Willebrand factor ADAMTS13 monoclonal antibody residual-collagen binding assay

Mutation of Arg723Gly in β-myosin heavy chain gene in five Chinese families with hypertrophic cardiomyopathy

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Chinese Medical Journal 2006年第21期119卷 1785-1789页

作者： YANG Jun-hua zheng dong-dong dong ning-zheng YANG Xiang-jun SONG Jian-ping JIANG Ting-bo CHENG Xu-jie LI Hong-xia ZHOU Bing-yuan ZHAO Cai-ming JIANG Wen-ping Department of Cardiology First Affiliated Hospital of Soochow University Suzhou 215006 China Department of Cardiology People＇s Hospital of Shanxi Province Taiyuan 030012 China Jiangsu Institute of Hematology Soochow University Suzhou 215006 China

Background Hypertrophic cardiomyopathy （HCM） is a form of cardiomyopathy with an autosomal dominant inherited disease, which is caused by mutations in at least one of the sarcomeric protein genes. Mutations in the beta-myosin heavy chain （β-MHC） are the most common cause of HCM. This study was to reveal the disease-causing gene mutations in Chinese population with HCM, and to analyze the correlation between the genotype and phenotype. Methods The exons 3 to 26 of MYH7 were amplified by PCR, and the PCR products were sequenced in five non-kin HCM patients. A 17-year-old patient was detected to be an Arg723Gly mutation carrier. Then his family was gene-screened, and the correlation between genotype and phenotype was analyzed. Results The mutation of Arg723Gly in a Chinese family with HCM was detected for the first time. With a C-G transversion in nucleotide 13 619 of the MYH7 gene, located at the essential light chain interacting region in S1, the replacement of arginine by glycine took place at amino acid residue 723. A two-dimensional echocardiogram showed moderate asymmetrical septal hypertrophy with left atria enlargement. There was no obstruction in the left ventricular outflow tract. In his family, a total of 13 individuals were diagnosed HCM and 5 of them were dead of congestive heart failure at a mean age of 66-year-old. Eight living members were all detected to carry the mutation, in which 3 developed progressive heart failure. Moreover, the heart function of the people evidently deteriorates when their age are older than 50. The mutation and the disease show co-separated. Conclusion The Arg723Gly mutation is a malignant type. In Chinese the mutation has the similar characters to the former report but has low degree malignant.

关键词： cardiomyopathy, hypertrophic, familial myosin heavy chain mutation genotype phenotype

急性心肌梗死和脑梗死患者血浆中ADAMTS13的测定及意义

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中华血液学杂志 2008年第3期29卷 161-163页

作者：董宁征刘芳季顺东阮长耿苏州大学附属第一医院、江苏省血液研究所 215006

目的研究急性心肌梗死（AMI）及急性脑梗死（AIS）患者血浆中血管性血友病因子（vWF）裂解酶（ADAMTS13）抗原和活性变化情况，探讨ADAMTS13在动脉血栓性疾病患者发病中的作用及意义。方法用Frests—WF73试剂盒检测血浆中ADAMTS13的活... 详细信息

目的研究急性心肌梗死（AMI）及急性脑梗死（AIS）患者血浆中血管性血友病因子（vWF）裂解酶（ADAMTS13）抗原和活性变化情况，探讨ADAMTS13在动脉血栓性疾病患者发病中的作用及意义。方法用Frests—WF73试剂盒检测血浆中ADAMTS13的活性；用ELISA法检测ADAMTS13抗原含量；并对患者血浆vWF多聚物进行电泳分析。结果正常对照组、AMI组和AIS组ADAMTS13抗原含量分别为（878±198）、（618±188）和（702±155）U／L；活性分别为（81．7±13．9）％，（59．2±22．1）％和（65．4±15．8）％。AMI组和AIS组ADAMTS13抗原含量及活性均显著低于正常对照组（P〈0．01）；vWF多聚物分析未见异常。结论AMI及AIS患者血浆ADMATS13抗原及活性均降低，提示ADAMTS13的减少与动脉血栓性疾病的发病相关。

关键词：血管性血友病因子裂解酶心肌梗死脑梗死

Visualization of the protective role of estrogen against female liver fibrosis via an ER viscosity NIR fluorescent probe

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Science China Chemistry 2025年第1期68卷 360-368页

作者： zheng Liu Changyu Zhang Zipeng Li Wanying Ma Jia Liu Xiang Xia ning Xu Wen Sun Jianjun Du Jiangli Fan Xiaojun Peng State Key Laboratory of Fine Chemicals Dalian University of Technology ningbo Institute of Dalian University of Technology

Endoplasmic reticulum(ER) viscosity has emerged as a new potential biomarker for hepatic fibrosis(HF). Herein, we report the first ER-targeting viscosity-responsive near-infrared(NIR) fluorescent probe HBT-PP for investigations of HF *** twisted intramolecular charge transfer(TICT) and the excited state intramolecular proton transfer(ESIPT) are combined to endow HBT-PP with the selective response towards viscosity(～62-fold) and a super large stokes shift(～320 nm). HBT-PP mainly targets organelle ER and is able to image the drug-or alcohol-induced viscosity elevation in living cells. Significantly,HBT-PP was successfully applied to visualize the gender difference in HF and the protective role of estrogen in restraining HF progression. Of note, after 10 min of stain with HBT-PP, HF lesions showed a stage-based response, indicating the potential of this probe in fast and early diagnosis of HF. These results clearly demonstrated the promising application of HBT-PP as a new tool for exploring ER viscosity-involved physiological and pathological processes.

关键词： NIR fluorescent probe ER viscosity hepatic fibrosis gender difference estrogen

Small modifications of endo-functionalized cavities lead to large changes in molecular interaction in water

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Science China Chemistry 2025年第1期68卷 369-376页

作者： Song-Meng Wang Hao Nian Yan-Fang Wang Li-Shuo zheng Yu-Tao zheng Yi-Wei dong Liping Huang Xiaoping Wang Wei Jiang Liu-Pan Yang Department of Chemistry Southern University of Science and Technology School of Chemistry and Pharmaceutical Sciences State Key Laboratory for Chemistry and Molecular Engineering of Medicinal ResourcesGuangxi Normal University School of Pharmaceutical Science Hengyang Medical School University of South China

Studying molecular recognition in aqueous environments is crucial for understanding biological processes. Herein, we present a series of N-doped endo-functionalized anthracene-based cavities by introducing inward-directed pyridine units. The subtle modifications can significantly affect the binding properties of these receptors, which is similar to the mutations in biological systems. Combining theoretical calculations and molecular recognition experiments demonstrated that these “mutations” have an impact on the hydrophobicity and charge distribution of the hosts, consequently significantly influencing molecular *** is crucial for understanding the intricate mechanisms of molecular-level interactions in biological receptors.

关键词： host-guest interaction hydrophobic effect endo-functionalized cavity mutation pyridine

缺氧对肺腺癌细胞HIF-1α、GLUT-1、MMP-2表达影响的研究

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肿瘤 2007年第6期27卷 445-448页

作者：冯春来王翎董宁征苏州大学附属第一医院呼吸科苏州215006 江苏省血液研究所苏州215006

目的:探讨人肺腺癌细胞株A549在缺氧条件下HIF-1α、GLUT-1、MMP-2的表达变化情况。方法:对肺腺癌细胞A549分别进行常规和氯化钴模拟缺氧培养,采用MTY法检测缺氧对A549细胞增殖的影响;Transwell侵袭小室测定法评价缺氧下A549细胞的侵袭... 详细信息

目的:探讨人肺腺癌细胞株A549在缺氧条件下HIF-1α、GLUT-1、MMP-2的表达变化情况。方法:对肺腺癌细胞A549分别进行常规和氯化钴模拟缺氧培养,采用MTY法检测缺氧对A549细胞增殖的影响;Transwell侵袭小室测定法评价缺氧下A549细胞的侵袭力;分别采用RT-PCR法和western blot、免疫组化法测定缺氧不同时间HIF-1α和GLUT-1、MMP-2 mRNA和蛋白表达水平的变化。结果:A549细胞在缺氧条件下增殖能力和侵袭力较正常时增强。正常氧条件下的A549细胞即有一定水平的HIF-1α、GLUT-1、MMP-2的表达,随着缺氧时间的延长,HIF-1α和、GLUT-1、MMP-2 mRNA和蛋白水平呈升高趋势,与正常对照组比较,各缺氧组差异有统计学意义(P<0.01)。结论:氯化钴诱导缺氧可以上调HIF-1α、GLUT-1、MMP-2蛋白在肺腺癌细胞中的表达水平,加速肺癌细胞的生长和转移,使之进一步耐受缺氧。

关键词：肺肿瘤缺氧缺氧诱导因子1α 葡萄糖转运蛋白类,易化性基质金属蛋白酶2 A549细胞

人源性抗血小板膜糖蛋白Ⅱb/Ⅲa Fab抗体的研制及其对血小板聚集功能的影响

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细胞与分子免疫学杂志 2009年第1期25卷 65-67页

作者：董宁征崔宇杰阮长耿苏州大学附属第一医院、江苏省血液研究所、卫生部血栓与止血重点实验室江苏苏州215006 天津医科大学医学检验系天津300020

目的:构建人源性抗血小板膜糖蛋白Ⅱb/Ⅲa(GPI-Ib/IIIa)Fab噬菌体抗体库,筛选抗GPⅡb/Ⅲa特异性的噬菌体抗体,并对其功能进行研究。方法:取血小板膜糖蛋白抗体(抗GPIIb/IIIa)阳性的特发性血小板减少性紫癜(ITP)患者脾细胞,采用噬菌体抗... 详细信息

目的:构建人源性抗血小板膜糖蛋白Ⅱb/Ⅲa(GPI-Ib/IIIa)Fab噬菌体抗体库,筛选抗GPⅡb/Ⅲa特异性的噬菌体抗体,并对其功能进行研究。方法:取血小板膜糖蛋白抗体(抗GPIIb/IIIa)阳性的特发性血小板减少性紫癜(ITP)患者脾细胞,采用噬菌体抗体库技术构建人源性抗GPⅡb/Ⅲa Fab噬菌体抗体库,以表达GPⅡb/Ⅲa的CHO123细胞筛选抗体库,并以ELISA法检测噬菌体抗体;用Western blot对抗体进行鉴定,并测定其与血小板抗原的结合;观察筛选到Fab抗体对血小板聚集的影响。结果:筛选出2株能够与血小板膜GPⅡb/Ⅲa特异性结合的Fab抗体,其序列与人免疫球蛋白轻、重链可变区序列具有高度同源性,表达纯化的Fab抗体能抑制血小板聚集。结论:成功地从人源性抗血小板膜糖蛋白Ⅱb/Ⅲa Fab抗体库筛选出特异性识别GPⅡb/Ⅲa,具有抑制血小板聚集作用的人源性抗体。

关键词：血小板膜糖蛋白IIb/IIIa 噬菌体展示 Fab 血小板聚集

Long noncoding RNA LINC01106 promotes lung adenocarcinoma progression via upregulation of autophagy

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Oncology Research 2025年第1期33卷 171-184页

作者： GENGYUN SUN YIPING zheng JIANFENG CAI JIE GAO LIE dong XIANGBIN ZHANG YINGHUI HUANG Department of Respiratory and Critical Care Medicine The First Affiliated Hospital of Anhui Medical UniversityHefei230022China Department of Respiratory and Critical Care Medicine Nanping First Hospital Affiliated to Fujian Medical UniversityNanping353006China

Background:Long noncoding RNA,LINC01106 exhibits high expression in lung adenocarcinoma(LUAD)tumor tissues,but its functional role and regulatory mechanism in LUAD cells remain ***:LINC01106 expression was analyzed in LUAD tissues and its functional impact on LUAD cells was *** cells were silenced with sh-LINC01106 and injected into nude mice to investigate tumor *** downstream transcription factors and molecular mechanism were determined using the Human transcription factor database(TFDB)database and Gene Expression Profiling Interactive Analysis(GEPIA)***,the impact of linc01106 on autophagy was analyzed by determining the expression of autophagy-related genes(ATGs)in LUAD ***:Our results showed that LINC01106 exhibited upregulation in both LUAD tissues and cell *** silencing of LINC01106 demonstrated a suppressive effect on tumorigenesis in a xenograft mouse model of ***,LINC01106 was found to recruit TATA-binding protein-associated factor 15(TAF15),an RNA-binding protein,thereby enhancing the mRNA stability of TEA domain transcription factor 4(TEAD4).In turn,TEAD4 served as a transcription factor that bound to the LINC01106 promoter and regulated its *** assays indicated that LINC01106 promoted autophagy in LUAD cells by upregulating the expression of autophagy-related genes(ATGs).The silencing of LINC01106 in LUAD cells inhibited autophagy,and cell proliferation,and promoted apoptosis,which all were effectively reversed by ATG5 ***:Overall,LINC01106,transcriptionally activated by TEAD4,interacts with TAF15 to promote the stability of TEAD4 and upregulates the expression of ATGs,promoting malignancy of LUAD cells.

关键词： LINC01106 TAF15 TEAD4 ATG5 Lung adenocarcinoma(LUAD) Non-small cell lung cancer(NSCLC)