Results 41 to 50 of about 22,415 (183)
The role of jumping translocation breakpoint gene promoting instability of genome and the biological function of its protein and potential clinical value [PDF]
, 2014 染色体不稳定性是大多数肿瘤细胞特别是实体瘤细胞和体外转化细胞的基本特征。其表现形式包括整条染色体的获得或缺失，杂合缺失，染色体易位重排，基因扩增等。目前认为染色体不稳定是肿瘤形成的始发因素，出现在肿瘤进展的早期阶段。体内外各种损伤刺激导致的基因组DNA链的断裂是染色体不稳定的根本原因。我们的研究发现，跳跃易位断裂点基因（JTB）在胃癌、肝癌中存在广泛的基因扩增和基因易位行为，而基因的扩增和易位是DNA双链断裂后异常修复的最终结果。JTB基因的断裂易位将导致其编码跨膜结构域的基因序列丢失 ...
刘贇鹏
core
Rare Metals, EarlyView.ABSTRACT High‐entropy alloys (HEAs) have attracted considerable interest from researchers owing to their tunable chemical compositions, exceptional structural stability, and promising catalytic properties. However, their large‐scale application is often hindered by complex manufacturing techniques and poor durability.
Sheng Guo +9 more
wiley +1 more source
, 2010 果糖-1,6-二磷酸酶(EC 3.1.3.11)是糖异生中的关键限速酶之一,在糖代谢中起重要作用。哺乳动物存在肝脏型和肌肉型两种果糖-1,6-二磷酸酶同工酶,分别由Fbp1和Fbp2编码。银鲫作为我国重要的经济养殖鱼类,尚无果糖-1,6-二磷酸酶基因的有关资料,其组织分布特征和胚胎发育模式亦不清楚。本研究采用RACE方法从银鲫原肠胚SMART cDNA文库中扩增了果糖-1,6-二磷酸酶基因的全长cDNA,其长度为1170 bp,编码337个氨基酸残基,多重序列比对和系统发育分析表明该基因为肝脏型果糖 ...
桂建芳, 王锐, 肖青
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Rare Metals, EarlyView.ABSTRACT The development of sodium‐ion batteries (SIBs) is limited by slow charge transfer kinetics and large material volume changes caused by the large radius of Na+. Leveraging the excellent physicochemical properties and unique heterostructures of metal selenides, ultrafine hetero‐CuFeSe2‐CoSe2 nanoparticles are in situ wrapped by ...
Ying Zhu +5 more
wiley +1 more source
Zhongguo shiyan zhenduanxue, 1997 正确判定肝功能检查的临床意义宋国培作者单位：１３００２１长春，白求恩医科大学第一临床学院肝脏有广泛的生理功能，如代谢、解毒、排泄、免疫、凝血和纤溶因子的生成，以及与肾脏共同维持体液和电解质平衡等。现有的各种肝功能检查只能反映其中某个方面，各项肝功能检...
宋国培
doaj
Identifying a novel RARγ ligand and exploring its biological function [PDF]
, 2016 视黄酸受体γ(RetinoicAcidReceptorgamma，RARγ)，作为核受体超家族重 要成员之一，在生物体生长、发育、代谢、免疫、分化、增殖、炎症、凋亡等过 程中均发挥着重要作用。RARγ一般与核受体RXRα形成异源二聚体形式，在细 胞核发挥调控基因转录的活性。但是近年来的研究发现，RARγ以及其他一些核 受体会出核与胞质中的蛋白直接相互作用进而快速参与到胞外的信号调控，发挥 核受体的“非基因型作用”。因此，RARγ一直以来都是药物干预和治疗过程中 重要且极具吸引力的靶点 ...
凌小滨
core
Rare Metals, EarlyView.ABSTRACT Multi‐element Prussian blue analog (PBA) nanocomposites have attracted wide attention for their superior characteristics to single‐functional nanomaterials in extensive applications of diagnosis and therapy. In this study, a novel hollow nanocomposite was designed and fabricated by embedding S2− and Ag nanoparticles into a NiCuMnFe (PBA).
Tao Ji +7 more
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2011 免疫细胞常处于病理性或生理性缺氧环境中,缺氧可以明显影响免疫细胞的多种生物学功能。在诸多病理情况下,如感染、炎症、创伤、休克、肿瘤、器官移植等,常发生缺氧,从而引起免疫细胞缺氧反应和功能改变。现就此作一综述。1细胞氧感受器细胞缺氧反应涉及细胞内氧感受机制 ...
李蕾, 王发龙, 陈国千
doaj
The synthesis of triazole derivatives on mushroom tyrosinase and their mechanisms [PDF]
, 2016 酪氨酸酶广泛的存在于各生物体内，其产物多巴醌能与氨基酸或者蛋白质聚合黑色素，该酶是合成黑色素的关键酶。然而黑色素的过量合成会引起雀斑、黄褐斑、老年斑等色素沉积性皮肤病，此外研究表明，酪氨酸酶还与帕金森综合症、昆虫蜕皮、果蔬褐变有密切关系。因此，控制酪氨酸酶活性的研究在农业、制药业及化妆品行业有重要开发价值。 4-氨基-3-肼基-5-巯基-1，2，4-三唑（AHMT）为五元氮杂环，是酰胺键的电子等排物，也具有潜在的配位键，而苯甲醛类衍生物为酪氨酸酶底物的类似物，可以竞争性抑制酶失活性 ...
喻枫
core
Rare Metals, EarlyView.ABSTRACT The development of high‐efficiency, stable, and scalable perovskite solar cells/perovskite solar modules (PSCs/PSMs) highly depends on the performance and cost‐effectiveness of functional layers such as electron transport layers (ETLs) and hole transport layers (HTLs).
Baochang Wang +11 more
wiley +1 more source