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20E调控家蚕BmFoxL2-2的分子机制及斜纹夜蛾SlFoxL2-2在精巢中的表达分析

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昆虫学报 2024年第5期67卷 603-610页

作者：肖妍虹裴梦圆贺智颖刘邓捷文靓余小强胡启豪华南师范大学生命科学学院广东省昆虫发育调控与应用研究重点实验室广州510631

【目的】本研究旨在阐明蜕皮激素20-羟基蜕皮酮(20-hydroxyecdysone,20E)调节家蚕Bombyx mori转录因子基因BmFoxL2-2表达的分子机制,并分析FoxL2-2在斜纹夜蛾Spodoptera litura精巢中的表达模式。【方法】PCR扩增家蚕5龄幼虫精巢基因组... 详细信息

【目的】本研究旨在阐明蜕皮激素20-羟基蜕皮酮(20-hydroxyecdysone,20E)调节家蚕Bombyx mori转录因子基因BmFoxL2-2表达的分子机制,并分析FoxL2-2在斜纹夜蛾Spodoptera litura精巢中的表达模式。【方法】PCR扩增家蚕5龄幼虫精巢基因组中BmFoxL2-2起始密码子上游约2500 bp的启动子序列,通过生物信息学分析预测其潜在的顺式作用元件(cis-regulatory elements,CREs);分别将pEGFP-BmBRC-Z1,pEGFP-BmBRC-Z2,pEGFP-BmBRC-Z4转录因子表达质粒和pGL3-BmFoxL2-2质粒共转染家蚕BmN细胞,通过双荧光素酶活性实验检测BmBRC蛋白对BmFoxL2-2启动子活性的影响;利用1μmol/L 20E处理BmN细胞4 h时,通过qRT-PCR检测BmFoxL2-2的表达量,检测BmBrc-z1和BmBrc-z4的表达量作为对照;通过qRT-PCR检测BmBrc-z1和BmBrc-z4在家蚕不同发育阶段(幼虫、预蛹、蛹和成虫)精巢中及5龄幼虫和3日龄蛹精巢与卵巢中的表达量;通过生物信息学在斜纹夜蛾基因组数据库鉴定了SlFoxL2-2,利用qRT-PCR检测SlFoxL2-2在斜纹夜蛾6龄幼虫和成虫的精巢与卵巢、6龄幼虫不同组织(脂肪体、中肠、血淋巴、头、表皮和精巢)、不同发育阶段精巢以及6龄幼虫精巢、精子和精巢膜中的表达量。【结果】获得家蚕BmFoxL2-2(Gene ID:101735653)起始密码子上游2500 bp启动子序列,并在序列中预测到13个潜在的BRC蛋白CRE。BmBRC-Z1和BmBRC-Z4可显著上调BmFoxL2-2启动子活性;20E处理BmN细胞4 h时,BmN细胞中BmFoxL2-2,BmBrc-z1和BmBrc-z4的表达量比对照组的显著上调;BmBrc-z1和BmBrc-z4在家蚕幼虫、预蛹、蛹和成虫精巢中均有表达,在5龄幼虫及3日龄蛹精巢中的表达量显著高于卵巢中的。斜纹夜蛾SlFoxL2-2在精巢中有高水平表达,且在精巢和精子中的表达量显著高于在精巢膜中的,可能SlFoxL2-2与精巢发育和精子发生相关。【结论】20E可通过家蚕转录因子BmBRC-Z1和BmBRC-Z4上调BmFoxL2-2的表达,FoxL2-2在调节精巢发育和精子发生中的功能在鳞翅目昆虫中可能是保守的。

关键词：家蚕精巢发育蜕皮激素 FoxL2-2 转录调控

Synthesis and Crystal Structure of E-4,4’-Bis(N,N-di-n-butylamino)stilbene

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Chinese Journal of Structural Chemistry 2005年第8期24卷 875-878页

作者： ZHANG Xian yu xiao-qiang yu Wen-Tao HE Wei JIANG Min-Hua State Key Laboratory of Crystal Materials Shandong University ChinaJinan 250100

The title compound E-4,4＇-bis（N,N-di-n-butylamino）stilbene （abbreviated to BDBAS） was synthesized by a simple and effective solvent-free wittig reaction with a higher *** crystal structure was determined by a four-circle diffractometer. The crystal data： C30H46N2, Mr =434.69, monoclinic, space group P21/n, a = 9.7805（13）, b = 14.3249（16）, c = 10.0243（16） ,A°, a =90.00, β = 98.639（11）, γ = 90.00°, V = 1388.5（3） ,A°^3, Z = 2, Dc = 1.040 g/cm^3, F（000） = 480,μ（MoKa） = 0.059 mm^-1, the final R = 0.0778 and wR = 0.2064. The results reveal that the molecule is a completely reverse 7r-conjugate system.

关键词： BDBAS synthesis crystal structure

Nonadiabatic Geometric Quantum Computation with Asymmetric Superconducting Quantum Interference Device

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Communications in Theoretical Physics 2002年第9期37卷 285-291页

作者： HAO San-Ru HOU Bo-yu XI xiao-qiang yuE Rui-Hong Institute of Modern Physics Northwest University Xi''an 710069 China Galculating Physics Division Department of Computer Teaching Hunan Normal University Changsha 410081 China Institute of Modern Physics Northwest University Xi''an 710069 China Institute of Modern Physics Northwest University Xi''an 710069 China Institute of Modern Physics Northwest University Xi''an 710069 China

We propose a method of controlling the dc-SQUID (superconducting quantum interference device) system by changing the gate voltages, which controls the amplitude of the fictitious magnetic fields B-z, and the externally applied current that produces the piercing magnetic flux Phi(x) for the dc-SQUID system. We have also introduced a physical model for the dc-SQUID system. Using this physical model, one can obtain the non-adiabatic geometric phase gate for the single qubit and the non-adiabatic conditional geometric phase gate (controlled NOT gate) for the two qubits. It is shown that when the gate voltage and the externally applied current of the dc-SQUID system satisfies an appropriate constraint condition, the charge state evolution can be controlled exactly on a dynamic phase free path. The non-adiabatic evolution of the charge states is given as well.

关键词： non-adiabatic geometric phase gate dc-SQUID quantum computation

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草地贪夜蛾与甜菜夜蛾种内和种间的竞争行为

环境昆虫学报 2024年第1期46卷 243-252页

作者：苏湘宁林晓珠余小强李传瑛郑晓佳焦家欣申建梅陈亚青彭玉玲章玉苹胡黎明广东省农业科学院植物保护研究所农业农村部华南果蔬绿色防控重点实验室广东省植物保护新技术重点实验室广州510640 仲恺农业工程学院农业与生物学院广州510225 华南师范大学生命科学学院广东省昆虫发育生物学与应用技术重点实验室广州510631

草地贪夜蛾Spodoptera frugiperda(Smith)和甜菜夜蛾Spodoptera exigua(Hübner)是我国重要的农作物害虫,存在很多共同的寄主植物。为明确草地贪夜蛾和甜菜夜蛾的竞争关系,本文在食物充足和食物缺乏条件下,研究了草地贪夜蛾和甜菜夜蛾... 详细信息

草地贪夜蛾Spodoptera frugiperda(Smith)和甜菜夜蛾Spodoptera exigua(Hübner)是我国重要的农作物害虫,存在很多共同的寄主植物。为明确草地贪夜蛾和甜菜夜蛾的竞争关系,本文在食物充足和食物缺乏条件下,研究了草地贪夜蛾和甜菜夜蛾种内和种间竞争行为;研究了不同初始种群密度草地贪夜蛾和甜菜夜蛾初孵幼虫在相同生态位的种群竞争行为。结果表明:无食物条件下,扭动行为是草地贪夜蛾种内竞争最主要的行为表现,其中3龄与5龄幼虫组合扭动行为出现次数最多,为8.57±0.49次/30 min。与无食物处理相比,有食物处理下草地贪夜蛾攻防行为次数较少。种间竞争中,在无食物条件下二者攻击行为主要表现为头部接触,防御主要表现为扭动行为,其中草地贪夜蛾4龄幼虫与甜菜夜蛾5龄幼虫竞争时头部接触和扭动行为最频繁,分别出现5.03±2.43次/30 min和18.47±5.92次/30 min。此外,同一龄期的草地贪夜蛾和甜菜夜蛾种间竞争中,草地贪夜蛾存活率更高;不同龄期两者竞争时,龄期相对较高的幼虫存活率更高,且有食物时两者存活率均高于无食物处理。种群竞争的室内模拟研究中,草地贪夜蛾和甜菜夜蛾种群的存活率随共存时间的增加逐渐降低。重复测量方差分析表明,5头草地贪夜蛾幼虫与40头甜菜夜蛾幼虫接入玉米苗后,共存时间没有显著影响草地贪夜蛾幼虫的存活率,但甜菜夜蛾幼虫的存活率受共存时间影响显著;其他组合中共存时间均显著影响草地贪夜蛾与甜菜夜蛾幼虫的存活率,其中,40头草地贪夜蛾幼虫与40头甜菜夜蛾幼虫接入玉米苗后,两者存活率均存在显著差异,草地贪夜蛾的存活率显著高于甜菜夜蛾,草地贪夜蛾种群可能取代甜菜夜蛾种群。研究结果可为明确草地贪夜蛾和甜菜夜蛾的种群演替规律及制定科学的防治措施提供参考。

关键词：草地贪夜蛾甜菜夜蛾种内竞争种间竞争

射精球蛋白EBP在果蝇精子发生中的功能初探

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环境昆虫学报 2024年第1期46卷 166-173页

作者：杨捷梅莫东君何漪婷林嘉凝汤婷余小强胡启豪华南师范大学生命科学学院广东省昆虫发育生物学与应用技术重点实验室广州510631

射精球蛋白EBP主要由射精管释放,是果蝇精液的重要组成部分。但是,EBP的具体作用机制及其在果蝇其它生命活动中的功能仍不清楚。本文检测了果蝇Ebp和EbpII基因在不同发育阶段以及成虫精巢与卵巢中的表达水平。结果发现,Ebp和EbpII基因... 详细信息

射精球蛋白EBP主要由射精管释放,是果蝇精液的重要组成部分。但是,EBP的具体作用机制及其在果蝇其它生命活动中的功能仍不清楚。本文检测了果蝇Ebp和EbpII基因在不同发育阶段以及成虫精巢与卵巢中的表达水平。结果发现,Ebp和EbpII基因在成虫中的表达水平显著高于其它发育阶段的果蝇,且它们在精巢中的表达显著高于卵巢。生物信息学分析表明,EBP和EBPⅡ蛋白仅包含若干低复杂区域,不含特殊的结构域,且它们的理化性质存在差异。在精细胞中特异性敲降Ebp后,果蝇储精囊中缺乏成熟的精子,但敲降EbpII后精巢没有显著的表型变化。TUNEL实验结果显示,在精细胞和生殖干细胞中特异性敲降Ebp的表达均能引起精子束的异常凋亡。由此,推测Ebp基因参与果蝇精子发生过程,并在维持精细胞存活过程中起关键作用。

关键词：黑腹果蝇精巢射精球蛋白精子发生发育

Synthesis, Luminescence and Electrochemical Properties of Two Phenothiazine Derivatives

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Chinese Journal of Chemistry 2005年第11期23卷 1483-1489页

作者： LI, Dong-Mei ZHOU, Hong-Ping PU, Ji-Qin FENG, xiao-Juna WU, Jie-Ying TIAN, yu-Peng yu, xiao-qiang TAO, Xu-Tang JIANG, Min-Hua Department of Chemistry Anhui University Hefei Anhui 230039 China State Key Laboratory of Crystal Materials Shandong University Jinan Shandong 250100 China State Key Laboratory of Coordination Chemistry Nanfing University Nanfing Jiangsu 210093 China

The synthesis, luminescence and electrochemical properties of two novel phenothiazine derivatives were presented, which exhibit good one-photon fluorescence emission. The quantum yields and solvent effects of them were studied in detail. Compound 3,7-bis（2-4＇-imidazolylbenzylidenehydrazonoethyl）-（0-ethylphenothiazine）（5） was used as an effective initiator, of which two-photon fluorescence spectra were investigated under 800 nm fs laser pulse and the measured two-photon absorption cross-section was 18 × 10^-50 cm^4·s per photon. Two-photon initiated polymerization microfabrication experiments were carried out. X-ray diffraction analyses revealed that the shape of the compound 3,7-bis（2-pyrid-4＇-ylmethylidenehydrazonoethyl）-（0-ethylphenothiazine）（4） looks like a butterfly with nearly planar wings. The dihedral angle of the two benzene rings is 37.6° and there is an obvious π-π stacking interaction between the molecules in the crystal.

关键词： two-photon absorption two-photon initiated polymerization electrochemical property π-π stacking interaction

Identification and functional analysis of CG3526 in spermatogenesis of Drosophila melanogaster

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Insect Science 2024年第1期31卷 79-90页

作者： Qihao Hu Yanhong xiao Runnan Wei Ting Tang Liang Wen yuzhen Lu xiao-qiang yu Guangdong Provincial Key Laboratory of Insect Developmental Biology and Applied Technology Guangzhou Key Laboratory of Insect Development Regulation and Application ResearchInstitute of Insect Science and TechnologySchool of Life SciencesSouth China Normal UniversityGuangzhou510631 China

Spermatogenesis is a critical part of reproduction in insects;however,its molecular mechanism is still largely *** this study,we identified a testis-specific gene CG3526 in Drosophila *** analysis showed that CG3526 contains a zinc binding domain and 2 C2H2 type zinc fingers,and it is clustered to the vertebrate really interesting new gene(RING)family E3 ubiquitin-protein *** CG3526 was knocked down by RNA interference(RNAi),the testis became much smaller in size,and the apical tip exhibited a sharp and thin end instead of the blunt and round shape in the control *** importantly,compared to the control flies,only a few mature sperm were present in the seminal vesicle of C587-Gal4>CG3526 RNAi *** staining of the testis from CG3526 RNAi flies showed that the homeostasis of testis stem cell niche was disrupted,cell distribution in the apical tip was scattered,and the process of spermatogenesis was not ***,we found that the phenotype of CG3526 RNAi flies’testis was similar to that of testis of Stat92E RNAi flies,the expression level of CG3526 was significantly downregulated in the Stat92EF06346 mutant flies,and the promoter activity of CG3526 was upregulated by *** together,our results indicated that CG3526 is a downstream effector gene in the JAK-STAT signaling pathway that plays a key role in the spermatogenesis of Drosophila.

关键词： CG3526 JAK-STAT spermatogenesis STAT92E testis

Molecular docking-aided AIEgen design: concept, synthesis and applications

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Science China Chemistry 2024年第8期67卷 2614-2628页

作者： Jian-Qing Zhang xiao-yu Xu Fu-Sheng Liu Shu-qiang Cao yu-Xin Gui Yi-Wen Su xiao-yu He Ji-yuan Liang You-Quan Zou Department of Radiation and Medical Oncology Zhongnan Hospital of Wuhan UniversitySchool of Pharmaceutical SciencesWuhan UniversityWuhan 430071China Key Laboratory of Combinatorial Biosynthesis and Drug Discovery Ministry of EducationWuhan UniversityWuhan 430071China Tai Kang Center for Life and Medical Sciences Wuhan UniversityWuhan 430071China Department of Hepatobiliary Pancreatic SurgeryZhongnan Hospital of Wuhan UniversityWuhan 430071China

Aggregate-induced emission luminogens(AIEgens) have been widely used in biological imaging, chemical sensing, and disease treatments. The rational design and construction of AIEgens have received considerable research interests during the last few years. Herein, molecular docking-aided AIEgen design has been reasonably proposed and AIEgen TBQZY with excellent ~1O_(2) generation ability has been synthesized. The newly developed TBQZY could efficiently kill S. epidermidis and methicillinresistant S. epidermidis(MRSE) by tightly binding to bacteria and triggering the accumulation of ~1O_(2) in bacteria. TBQZY specifically regulated the immune system and polarized macrophages from M1 to M2 to accelerate the elimination of biofilm in vivo. In addition, healing acceleration was observed in chronic wounds treated with TBQZY, and side effects were ***, TBQZY had extraordinary potential for combating drug-resistant bacteria in the clinical setting. This research not only provided new concepts for the design of AIEgens, but also shed some lights on the discovery of drugs against drug-resistant bacteria.

关键词： AIEgen molecular docking drug-resistant bacteria biofilm chronic wounds healing

Deciphering dynamic surface of PtRu alloy nanocatalysts to revisit their synergistic effects during the electrooxidation

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Science China Chemistry 2024年第7期67卷 2224-2233页

作者： xiao-Chong Li Bo Wang Zhou yu qiang Wan Ju-Fang Zheng Emmanuel Maisonhaute xiao-Shun Zhou Ya-Hao Wang Key Laboratory of the Ministry of Education for Advanced Catalysis Materials Institute of Physical ChemistryZhejiang Normal UniversityJinhua 321004China Laboratoire Interface et Systèmes Electrochimiques CNRS UMR 8235Sorbonne UniversitéF-75252 Paris cedex 5France

Correlating dynamic structural transformation of catalysts with the surface intermediate species under operating conditions is critical for updating the understanding of structure–performance ***,we probe the electrochemical potentialdependent surface structures and adsorbed intermediates on PtRu binary alloy nanocatalysts to revisit its synergistic mechanisms for CO electrooxidation enhanced ***-situ spectral characteristics by using modified shell-isolated nanoparticle-enhanced Raman spectroscopy,show that in acidic solution,when the potential is positively scanned from 0.1 V to 1.5 V relative to reversible hydrogen electrode(RHE),the surface of the alloy catalyst evolves from metallic PtRu to adsorbed oxygen gradually covering and accumulating on Ru sites(denoted as PtRuO_(x),x≤2),forming segregated RuO_(2),and finally forming a threedimensional oxide layer(denoted as 3D PtRuO_(4)).Moreover,molecular evidence associated with periodic density functional theory calculations reveals that electronic effects promote ruthenium to become more oxidizable and *** particular,we found here that ^(*)O and ^(*)OH at surface RuO_(x) sites are highly efficient CO oxidation active species in comparison to the same entities adsorbed on metallic Ru *** work sheds light on the complex surface dynamic process of practical Pt-based binary nanocatalysts and improves the understanding of synergistic mechanism for the development of fuel cell devices.

关键词： in-situ Raman spectroscopy surface evolution bifunctional mechanism PtRu electrooxidation