Results 21 to 30 of about 16,209 (168)
The role and mechanism of hnRNP A2/B1 in breast cancer [PDF]
, 2015 核不均一核糖核蛋白A2/B1（hnRNPA2/B1）是hnRNP蛋白家族成员，在肿瘤细胞增殖与凋亡过程中具有重要作用。本实验为了探究hnRNPA2/B1蛋白在乳腺癌组织中的表达及其在乳腺癌细胞中的定位。研究hnRNPA2/B1在乳腺癌细胞中所涉及的主要功能、信号通路以及可变剪接和蛋白融合过程，并探究hnRNPA2/B1对细胞增殖、凋亡、迁移等生物功能的影响。从而阐明hnRNPA2/B1在乳腺癌中的作用机制，为肿瘤的机理研究、临床诊断和治疗提供一个新靶点。本实验用免疫组化方法检测hnRNPA2 ...
韩荣
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Review of additively manufactured zinc alloys by laser powder bed fusion for biomedical applications
Rare Metals, Volume 44, Issue 11, Page 8262-8291, November 2025.Graphical abstract AbstractZinc (Zn) and its alloys have emerged as promising candidates for biomedical materials, owing to their controlled degradation kinetics, intrinsic biocompatibility, and the release Zn2+ ions which are known to promote bone regeneration and tissue healing.
Xuan Yang +5 more
wiley +1 more source
Mechanism of Mst1/2 kinases regulating PKCα-mediated the activation of Rac1 [PDF]
, 2016 当病原细菌入侵机体时，吞噬细胞（如巨噬细胞和嗜中性粒细胞等）会通过吞噬泡吞噬细菌；这一过程还伴随着线粒体以及NADPH氧化酶向吞噬泡募集并释放大量的ROS，来杀伤和清除病原细菌；其中，结合GTP的激活形式的RhoGTP酶蛋白家族成员Rac1和Rac2对于NADPH氧化酶激活的细胞吞噬过程是必需的。本实验室已有研究表明，在髓系细胞（单核细胞、巨噬细胞和嗜中性粒细胞等）条件性双敲除Mst1和Mst2的小鼠（Mst1fl/flMst2fl/flLyz2-Cre，cDKO）中，与野生型小鼠相比 ...
熊晓琳
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Functional Ecology, Volume 39, Issue 10, Page 2743-2757, October 2025.Read the free Plain Language Summary for this article on the Journal blog. Abstract Biological invasions threaten both biodiversity and ecosystem functioning, yet the role of functional and phylogenetic relationships between invaders and the recipient community in invasion success remains controversial.
Songhao Ji +7 more
wiley +1 more source
Pyruvate kinase M2 inhibits cisplatin induced caspase-dependent apoptosis via ERK-mediated signaling pathway in hepatocellular carcinoma cells [PDF]
, 2016 M2型丙酮酸激酶（pyruvatekinaseisoenzymetypeM2，PKM2）在肿瘤代谢 和生长等方面发挥重要作用。此外，PKM2还可作为蛋白激酶及辅助转录因子， 调控相关基因的转录表达，促进肿瘤细胞的增殖。我们实验室前期已经证实了 PKM2在肝细胞癌中高表达，并通过EGF/EGFR及TGFβ/TGFβR信号通路调控 肝癌细胞的迁移、侵袭。本课题研究目的在于进一步探索PKM2在肝癌细胞增 殖与凋亡方面的调控作用及相关分子生物学机制。 采用短发夹RNA转染HepG2和Huh7两株肝癌细胞株 ...
谌小春
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Assessing the Corn Belt as an anthropogenic barrier to migrating landbirds in the United States
Conservation Biology, Volume 39, Issue 5, October 2025.Abstract Migrating landbirds adjust their flight and stopover behaviors to efficiently cross inhospitable geographies, such as the Gulf of Mexico and the Sahara Desert. In addition to these natural barriers, birds may increasingly encounter anthropogenic barriers created by large‐scale changes in land use. One such barrier could be the Corn Belt in the
Fengyi Guo +7 more
wiley +1 more source
Evaluation of Nonel N-(piperidin-4-yl)benzamide Derivatives as Potential Cell Cycle Inhibitors in HepG2 cells [PDF]
, 2015 肝癌是目前世界上引起致高死亡率的疾病之一。细胞周期紊乱是引起肿瘤细胞增殖失控的主要原因，越来越多的学者致力于研究细胞周期抑制剂。索拉非尼作为一个多靶点广谱抗肿瘤药，近几年来基于其结构改造的化合物层出不穷。因此，本文以索拉非尼为先导化合物，保留其二芳醚结构，将脲基改造成酰胺键，并插入一个亲水基团，设计合成了一系列的索拉非尼类似物——N-(4-哌啶基)-苯甲酰胺类化合物，共合成了45个终产物，合成方法简单易操作，产物易纯化，且收率高。通过初步生物学活性的筛选 ...
侯瑾
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On the normative roles of biodiversity and naturalness in conservation
Conservation Biology, Volume 39, Issue 5, October 2025.Abstract Nature is an opaque concept. Consequently, the term biodiversity conservation has replaced nature conservation in most conservation contexts. We review the conceptual indeterminacies that plague the terms nature and natural but then show that comparable difficulties plague biodiversity.
David Saltz, Shlomo Cohen
wiley +1 more source
Roles of Receptor UNC5B in Vascular Development and Tumor Metastasis [PDF]
, 2012 血管和神经系统都构成复杂的分支网络，遍布身体的各个区域，并提供信息的双向流动（感觉和运动神经元；动脉和静脉血流）。在体内分布上血管和神经纤维也总是相伴而行到达同一远隔靶位，二者在结构和功能上的相似性，暗示着它们可能受到某些共同信号分子调控。很多神经导向因子都参与了对血管生长发育的调节。UNC5B是首个被证实参与血管发育调控的UNC5受体。但目前对于UNC5B在血管发育中的作用因所使用的动物模型以及UNC5B基因敲除后对表型分析的不同而存在很大的争议，争议的焦点在于UNC5B是促进，还是抑制血管的发育 ...
解宏
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Politics &Policy, Volume 53, Issue 5, October 2025.ABSTRACT Policy evaluation is crucial for effective governance and development in the Global South, yet its institutionalization is shaped by a complex interplay of historical, political, and transnational factors. This study examines how colonial legacies, domestic political dynamics, and external influences converge to influence policy evaluation ...
Anis Ben Brik
wiley +1 more source