Results 11 to 20 of about 209,042 (243)
Research on expression of HIV-1 env in baculovirus [PDF]
, 2000 昆虫细胞杆状病毒表达系统(BEVS)是真核表达系统的一种，以一种无需额外辅助的重组昆虫杆状病毒作为表达载体，目前已被应用来表达不同来源的基因，如细菌、病毒、植物和哺乳动物的基因。它具有表达产量高，蛋白经过完善的后处理过程，如内含子剪切、糖基化等特点。其原理是通过外源基因置换病毒的核多角体蛋白基因，使外源基因在核多角体蛋白启动子下高效表达。本论文中采用BEVS表达HIV-1包膜蛋白，目的在于弥补原核表达系统不能表达大片段的、高度糖基化的重组蛋白；并探索其应用在检测试剂中的前景。Baculovirus ...
郭庆
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Rare Metals, EarlyView.ABSTRACT To break electromagnetic wave absorption (EMA) tech's single‐attenuation bottleneck, enhancing multi‐wave absorption synergy in composites is key for microstructure design. This study uses mesoporous hollow carbon spheres to make metal nanospheres with cobalt, iron, and nickel nanoparticles, then encapsulates them via electrospinning into a ...
Wei‐Lian Zhang +10 more
wiley +1 more source
The effects of axon guidance factor Slit3 on metastasis of human fibrosarcoma [PDF]
, 2015 我们通过在纤维肉瘤细胞HT1080过表达Slit3基因，分析Slit3对肿瘤细胞侵袭转移作用.Transwell侵袭实验中，Slit3过表达后抑制HT1080的迁移侵袭，在裸鼠皮下成瘤实验中，肿瘤体积明显变小、重量明显降低，Slit3过表达后抑制HT1080肿瘤细胞的侵袭转移。此外肿瘤切片HE染色后发现GFP组有病灶点，而slit3过表达则少见，这个结果说明，Slit3显著抑制HT1080细胞转移。slit3过表达后MMP2,MMP9的表达明显降低，而MMP3，MMP13表达量上调 ...
刘咏梅
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Rare Metals, EarlyView.ABSTRACT The poor Zn chemistry of Zn metal anode and sluggish reaction kinetics of cathodes at high mass loadings are two crucial issues for hindering the application of aqueous Zn‐ion batteries (AZIBs). Herein, the hierarchical porous N‐doped carbon fibers (HPNCFs) were proposed to simultaneously optimize the reversibility of Zn plating/stripping of ...
Song Yang +6 more
wiley +1 more source
Functions of DHP and its nuclear receptor on reproductive neuroendocrine in zebrafish (Danio rerio) [PDF]
, 2016 本文研究了DHP对野生型和孕酮核受体敲除纯合型两种类型雄性斑马鱼垂体中促性腺激素β亚基基因（fshb和lhb）、脑中多巴胺合成限速酶酪氨酸羟基化酶基因（th2）及多巴胺二型受体基因（drd2a和drd2b）和促性腺激素释放激素基因（gnrh2和gnrh3）mRNA表达的影响。主要研究结果如下： 1.野生型雄性斑马鱼垂体中促性腺激素β亚基基因（fshb和lhb）mRNA表达呈现周日变化趋势，可分为基础表达期、上升表达期和高峰表达期3个期，高峰表达期的mRNA表达量显著高于其它2个期 ...
王翠丽
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Rare Metals, EarlyView.ABSTRACT Porous NiTi alloys are widely used in biomedical and engineering fields. Using the PBF‐LB technique, the TPMS and Voronoi porous parts with a porosity of ∼67% and a minimum feature size of 0.15 ± 0.02 mm were fabricated. Although the bulk sample fabricated with the same parameters is defect‐free, μ‐CT reconstruction on the porous sample ...
Wen‐Hao Zeng +7 more
wiley +1 more source
赤点石斑鱼促甲状腺激素TSHβ启动子的克隆及其在斑马鱼胚胎原始性腺和垂体中定位表达 [PDF]
, 2010 促甲状腺激素(Thyroid-stimulating hormone,TSH)具有调节生长,发育,代谢和生殖的功能,但是在低等脊椎动物中的功能研究较少。斜带石斑鱼(Epinephelus coioides)促甲状腺激素TSHβ除在垂体中表达外还在性腺中表达,进一步发现TSHβ也在赤点石斑鱼(Epinephelus akaara)性腺中表达。且在人工诱导的赤点石斑鱼中,随着雄性化的转变,TSHβ转录水平升高。为研究石斑鱼TSHβ特殊表达方式的调控机制,采用基因组步移技术扩增获得赤点石斑鱼TSHβ5 ...
周莉, 李辰昱, 桂建芳, 汪洋
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Rare Metals, EarlyView.ABSTRACT Achieving a simultaneous enhancement of strength and ductility remains a critical bottleneck for the large‐scale and cost‐effective engineering application of magnesium alloys. In this work, guided by first‐principles calculations, we tailored the τ‐Mg32(Al,Zn)49 phase and optimised twin boundary, thereby designing and successfully ...
Yun‐Xuan Zhou +8 more
wiley +1 more source
, 2010 采用生物信息学方法首次对非洲爪蟾短型肽聚糖识别蛋白(xePGRP-S)基因进行了克隆,并对其在胚胎发育和成年爪蟾各组织中的表达状况进行了分析。xePGRP-ScDNA全长720bp,开放阅读框为549bp,编码182个氨基酸。序列比对显示xePGRP-S与其他物种PGRP-S的序列相似性在42.4%—50.5%之间。RT-PCR显示在非洲爪蟾胚胎发育至3d时可以明显检测到xePGRP-S的表达,之后呈持续性表达,且在所检测的心、肝、脾、肺、肾 ...
昌鸣先 +4 more
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Rare Metals, EarlyView.ABSTRACT Intervertebral disc degeneration (IDD) is a predominant cause of low back pain, significantly impacting quality of life. Mitochondrial fitness is essential in the progression of IDD, as it regulates cellular senescence and pyroptosis. This study investigates the role of mitochondrial caseinolytic protease P (ClpP) in alleviating senescence and
Kun Wang +7 more
wiley +1 more source