Results 91 to 100 of about 209,042 (243)
Zhongguo shiyan zhenduanxue, 2010 目的构建MYCT-1（myc target）基因真核表达载体,观察其转染胃粘膜GES-1细胞系后的表达。方法用RT-PCR法合成MYCT-1 cDNA,克隆至表达载体pcDNA3.1上,测序验证无突变发生。将表达载体转染GES-1细胞,用RT-PCR和Western blot检测MYCT-1基因的表达。结果限制性内切酶酶切和DNA测序证实成功克隆了MYCT-1 cD-NA全长并正确插入了表达载体,在GES-1细胞中检测到MYCT-1 mRNA和蛋白。结论成功构建了MYCT-1真核表达载体,可在GES ...
梅旭, 刘政, 邱广斌
doaj
Abnormal lipid metabolism in pterygium [PDF]
, 2015 研究背景：翼状胬肉作为一种常见的眼科疾病，其发病机理尚未明确，目前缺乏有效的药物治疗方法，手术切除是唯一有效的治疗方式。深入研究翼状胬肉的病理改变将有助于揭示翼状胬肉的病理生理过程，为发展新的治疗方法奠定基础。近年来，有研究发现翼状胬肉组织中存在异常脂类代谢，但是异常脂类代谢在翼状胬肉发生发展中的作用仍不清楚。 实验目的：检测翼状胬肉组织中的异常脂类代谢，探究脂类代谢异常在翼状胬肉发生发展过程中的作用。 实验方法：本实验收集35例翼状胬肉患者的病理组织和5例患者的正常结膜组织，用于冰冻包埋 ...
邹笃雷
core
Success of restoration strategies in preventing extirpation of 2 critically endangered coral species
Conservation Biology, EarlyView.Abstract An unprecedented marine heatwave in 2023 caused widespread coral bleaching and mortality throughout the Caribbean. In the Florida Keys (USA), 2 foundation species, elkhorn coral (Acropora palmata) and staghorn coral (Acropora cervicornis), were severely affected.
Erinn M. Muller +29 more
wiley +1 more source
Expressions of Cyr61 and WISP-3 in Non-small Cell Lung Cancer and Its Clinical Significance [PDF]
, 2010 Background and objective Cysteine-rich protein 61 (Cyr61) plays a role as a tumor suppressor in non-small cell lung cancer (NSCLC). Cyr61 and WISP-3 have a very significant sequence homology, belonging to the same CCN gene family.
Chunwei ZHANG +3 more
core
A link between increased temperature and avian body condition in a logged tropical forest
Conservation Biology, EarlyView.Abstract The combined effects of anthropogenic disturbances, such as logging and climate change, remain poorly understood; yet, they are the main threats to tropical biodiversity. Most tropical African countries lack long‐term climate data, so climate impacts on biodiversity cannot be assessed.
Moreen Uwimbabazi +7 more
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2009 目的探讨亲环素A（Cyclophilin A,CypA）蛋白表达与胶质瘤预后相关性。方法采用免疫组织化学方法分析不同病理级别人脑胶质细胞瘤标本45例和正常脑组织10例中CypA蛋白表达情况,并将结果与随访结果进行综合分析。结果正常脑组织CypA蛋白表达阴性,脑胶质瘤中CypA蛋白总阳性表达率为60%（27/45）,其强阳性表达11例（24.4%）,中度阳性表达7例（15.6%）,弱阳性表达9例（20.0%）,阴性表达18例（40.0%）,胶质瘤组与正常对照组比较有显著性差异 ...
韩学哲 +5 more
doaj
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
core
Comprehensive framework for assessing and optimizing existing research networks
Conservation Biology, EarlyView.Abstract Conservation, monitoring, and research networks, or collections of ecological research sites unified under a common mission of data collection or a research mission, are essential infrastructure for understanding large landscapes. However, most networks developed opportunistically over decades rather than through systematic design, creating ...
Alyson East +2 more
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2010 目的探讨临床创面组织中生长相关因子c-sis和c-jun的表达变化规律。方法应用免疫组化方法对临床16例烧伤病人创面愈合过程中c-sis和c-jun表达变化进行检测,计算阳性表达细胞数。结果临床创面愈合中c-sis和c-jun有明显的规律性的表达。但二者表达模式不尽相同。c-sis在伤后5天表达量增加,10天达峰值,其阳性颗粒主要分布于真皮层成纤维细胞的胞核中。c-jun的表达在伤后1天达最高值,其阳性颗粒主要分布于表皮基底细胞胞浆及真皮成纤维细胞的胞核内。结论烧伤可以诱导皮肤创面组织原癌基因c ...
隋志甫 +4 more
doaj
Role of RNA helicase DHX32 in the metastasis of hepatocellular carcinoma [PDF]
, 2016 肝细胞癌是全球性的高致死率肿瘤之一，血管侵犯和转移是肝细胞癌患者术后易复发及5年生存率较低的重要原因，有效的抗转移策略无疑能给患者带来福音。因此，越来越多的研究致力于探讨肝细胞癌发生侵袭转移的分子机制，并希望通过找到某些关键分子来干预肿瘤的转移。 DHX32是人类RNA螺旋酶的家族成员之一，最早被发现是在急性淋巴细胞白血病中低表达并参与淋巴细胞的分化，但是它的生物学功能尚未明确。我们课题组前期通过差异基因显示技术发现DHX32在结直肠癌中表达上调，功能研究结果显示DHX32与结直肠癌细胞的增殖 ...
胡情
core