Results 71 to 80 of about 822,650 (184)

牙鲆热休克蛋白家族基因的克隆、鉴定及其表达分析

open access: yes, 2006
本文运用抑制性差减杂交技术,构建了灭活大菱鲆弹状病毒诱导的牙鲆囊胚培养细胞和正常对照细胞间差异表达基因的差减cDNA文库。通过构建SMART-cDNA文库并结合RACE技术,从该细胞模型系统中克隆、鉴定了10个Hsp家族基因一个鱼类蛋白质精氨酸甲基转移酶基因的全长cDNA序列和PoCctz基因的部分cDNA序列。 进一步利用Real-time PCR对11个热休克蛋白家族基因在热休克和灭活病毒诱导下的表达时序的研究表明:在灭活病毒诱导下,牙鲆Hsp基因表达特征与在热休克状态下的表达特征相似 ...
董彩文
core  

Competitive Anion Coordination Modulates Anode Interfacial Chemistry for Wide‐Temperature Sodium Batteries

open access: yesRare Metals, Volume 45, Issue 10, October 2026.
ABSTRACT Sodium‐ion batteries (SIBs) offer a promising, cost‐effective alternative for large‐scale energy storage due to the abundance of sodium. However, their practical deployment is challenged by sluggish interfacial kinetics and unstable interphase formation, which severely limit performance across wide temperature ranges. Here, we demonstrate that
Mingxing Zhang   +10 more
wiley   +1 more source

MYCT-1基因真核表达载体的构建及鉴定

open access: yesZhongguo 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  

鲤鲫人工多倍体谱系中同工酶和蛋白的基因表达

open access: yes, 2002
通过对红鲤、红鲫、镜鲤、鲤鲫杂种二倍体一代 ,二代 ,鲤鲫杂种三倍体 ,鲤鲫复合三倍体 ,鲤鲫杂种四倍体一代 ,二代的同工酶及蛋白电泳谱型和扫描数据分析表明 :在鲤鲫人工多倍体谱系中 ,亲代的等位基因在杂交子代中共有四种表达模式 :( 1 )两亲本基因在子代中共同表达 ,即共显表达 ;( 2 )父本的基因表达受到部分或完全的抑制 ,即母本的基因优先得到表达 ;( 3)母本的基因表达受到抑制 ,父本的基因得到表达 ;( 4 )双亲本的基因表达均受到一定程度的抑制或都不表达。其中第一种表达模式是主要的模式。
王小虎,叶玉珍,吴清江
core  

Tailoring the Mechanical Properties of L‐DED‐Fabricated γ‐TiAl Alloys Through Heat Treatment: Correlating Microstructural Evolution With Fracture Mechanisms

open access: yesRare Metals, Volume 45, Issue 10, October 2026.
ABSTRACT Laser‐directed energy deposition (L‐DED) offers a flexible route for fabricating γ‐TiAl components, but the as‐deposited microstructure requires post‐processing to overcome limited deformation capability. Here, an L‐DED Ti–48Al–2Cr–2Nb alloy was subjected to solution and solution‐aging treatments.
Mengya Chu   +6 more
wiley   +1 more source

Sulfur Vacancy Modulation‐Induced Electronic Rearrangement in S‐Scheme BaTiO3@ZnIn2S4 Heterojunctions: Toward Synergistic Piezo‐Photocatalytic H2O2 Evolution

open access: yesRare Metals, Volume 45, Issue 10, October 2026.
ABSTRACT High‐yield photocatalytic H2O2 production in sacrificial agent‐free pure water constitutes a critical bottleneck requiring urgent advances in energy catalysis. Although ZnIn2S4 (ZIS) exhibits favourable visible light absorption, it is plagued by severe bulk charge carrier recombination and scarce accessible surface‐active sites.
Sheng Liu   +7 more
wiley   +1 more source

亲环素A蛋白水平与脑胶质瘤预后相关性研究

open access: yesZhongguo 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  

Integrating fossil data in ecological niche models to improve predictions of future habitat of Caribbean corals

open access: yesConservation Biology, Volume 40, Issue 5, October 2026.
Abstract Ecological niche models (ENMs) are used to assess the abiotic preferences of species by linking their occurrences to the environmental conditions in which they live. We developed a fossil‐informed ENM framework that integrates mid‐Holocene and modern occurrences to test niche stability and reconstruct abiotic niche characteristics for four ...
Claire. M. Williams   +3 more
wiley   +1 more source

端粒酶基因和bcl-2在肺癌组织和细胞株中的相关性研究

open access: yes四川大学学报. 自然科学版, 2002
目的 研究肺癌及相应的癌旁组织、肺癌细胞株中端粒酶基因和抗凋亡基因bcl 2的关系 ,以期阐明端粒酶基因在肺癌的发生、发展中的表达及抗凋亡基因对端粒酶的调控机理 .方法 采用TRAP ,RT PCR及LSAB的方法研究了 38例肺癌及相应的癌旁组织、肺癌细胞株的端粒酶活性、hTR ,hTERT及bcl 2的表达 .结果  82 .3%的肺癌组织及 3种肺癌细胞株均表达端粒酶阳性 ,而癌旁组织及人胚肺成纤维细胞株全为端粒酶阴性 .38例癌组织中 ,34例表达hTR(89.4 %) ,其中 ...
陈蔚蔚   +7 more
doaj  

FOXN2通过PI3K/AKT信号通路对肾癌细胞增殖、凋亡的影响

open access: yesZhongguo shiyan zhenduanxue, 2021
目的研究FOXN2通过PI3K/AKT信号通路对肾癌增殖、凋亡的影响。方法实验分FOXN2过表达组、空载体对照组、对照组三组;检测FOXN2在人正常肾上皮细胞HK-2和肾癌细胞786-O中的表达;检测FOXN2过表达组、空载体对照组、对照组细胞的增殖情况和凋亡情况;检测FOXN2过表达组、空载体对照组、对照组细胞PI3K、AKT、p-AKT、Bcl-2、Bax、CDK1、CyclinD1蛋白表达水平。结果 (1)与人正常肾上皮细胞HK-2相比,人肾癌细胞786 ...
李秀文, 赵桂香
doaj  

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