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Dicer and its miRNAs are necessary gene and regulatory factors for differentiation and proliferation of vascular smooth muscle cell Dicer及其mirna是血管平滑肌细胞分化和增殖的必要基因和调控因子
IF 0.3 4区 生物学 Q4 Biochemistry, Genetics and Molecular Biology Pub Date : 2014-01-01 DOI: 10.3724/SP.J.1206.2014.00115
Yaoqian Pan, B. Pan, Xing-you Liu, Ruili Li, J. Yue
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引用次数: 1
Establishment of Cardiomyocyte-specific miR-30b Transgenic Mice and Exploring The Function of miR-30b 心肌细胞特异性miR-30b转基因小鼠的建立及miR-30b功能的探索
IF 0.3 4区 生物学 Q4 Biochemistry, Genetics and Molecular Biology Pub Date : 2014-01-01 DOI: 10.3724/SP.J.1206.2013.00206
Yuan-yuan Fan, B. Long, Fang Liu, Luyu Zhou, Kun Wang, Peifeng Li
MicroRNAs(miRNAs) array results have shown that the expression of miR-30b is downregulated in heart tissues from patients with familial hypertrophic cardiomyopathy who were carriers of missense mutations in the MYH7,and also in a murine heart failure model,implying that miR-30b might play an important role in heart diseases.To study miR-30b in vivo function,we generated a transgenic mouse line overexpressing miR-30b under the control of the 5.5 kb promoter of α-myosin heavy chain(α-MHC).qRT-PCR results demonstrated that miR-30b was significantly increased in the heart tissues of miR-30b transgenic mice(P 0.05).miR-30b transgenic mice did not exhibit significant heart/body weight and left ventricular(LV)/body weight changes and abnormal myocardium structure.At present,little is known about how miR-30b regulates myocardial infarction.We constructed I/R models by the coronary artery ligation method and sham-operated mice were used as controls.Biochemical detection results and TTC-Evans blue results showed that after ischemia-reperfusion,these transgenic mice had lower releases of LDH,CK and cTn玉(P 0.05)and their hearts exhibited a smaller infarct size compared to those from control mice(P 0.05).Echocardiographic results indicated that cardiac function of transgenic mice was markedly improved compared to that of control mice.In conclusion,miR-30b has protective effect upon ischemic-reperfusion injury.And it may provide a new therapeutic approach for preventing and treating myocardial infarction.
MicroRNAs(miRNAs)阵列结果显示,在MYH7错义突变携带者的家族性肥厚性心肌病患者的心脏组织以及小鼠心力衰竭模型中,miR-30b的表达下调,这意味着miR-30b可能在心脏病中发挥重要作用。为了研究miR-30b在体内的功能,我们在α-肌球蛋白重链(α-MHC) 5.5 kb启动子的控制下,构建了过表达miR-30b的转基因小鼠系。qRT-PCR结果显示,miR-30b转基因小鼠心脏组织中miR-30b水平显著升高(P < 0.05)。miR-30b转基因小鼠没有表现出明显的心脏/体重和左心室(LV)/体重变化和心肌结构异常。目前对miR-30b调控心肌梗死的机制知之甚少。采用冠状动脉结扎法构建I/R模型,以假手术小鼠为对照。生化检测结果和TTC-Evans蓝结果显示,与对照组相比,转基因小鼠缺血再灌注后LDH、CK、cTn的释放量较低(P < 0.05),心肌梗死面积较小(P < 0.05)。超声心动图结果显示,转基因小鼠的心功能较对照组有明显改善。综上所述,miR-30b对缺血再灌注损伤具有保护作用。为预防和治疗心肌梗死提供了新的治疗途径。
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引用次数: 1
The Effect and Mechanism of PLUNC Protein Family Against Inflammation and Carcinogenesis of Nasopharyngeal Carcinoma PLUNC蛋白家族抗鼻咽癌炎症及癌变的作用及机制
IF 0.3 4区 生物学 Q4 Biochemistry, Genetics and Molecular Biology Pub Date : 2014-01-01 DOI: 10.3724/SP.J.1206.2013.00396
Z. Yong, Zhou Ming, Xia-Yu Li, Zhang Wen-ling, Gong Zhao-Jian, Li Qian-jin, Xiao-Ling Li, Zeng Zhao-yang, Ma Jian, Shen Shou-rong, W. Fang, Xiong Wei
Secretion on the surface of human nasal mucosa contains many innate proteins,the key factors of which are SPLUNC1 and LPLUNC1,members of the palate,lung and nasal epithelium clone(PLUNC) family.These two proteins are highly expressed in nasopharyngeal epithelium with the relative specificity.Both of them have bacterial/permeability-increasing protein(BPI) domain which can bind to lipopolysaccharide(LPS) to inhibit or kill bacterial growth directly.They also have the immuno defense function to protect nasopharyngeal epithelium from Epstein-Barr virus(EBV) and some other pathogenic microorganism effectively.These proteins play a significant role in the process of chronic inflammation and carcinogenesis of nasopharyngeal epithelium by inhibiting the secretion of inflammatory factors,such as IL-6,through activating NF-κB and STAT3 signaling pathways.In addition,they also can suppress nasopharyngeal carcinoma(NPC) cell growth and induce cell apoptosis through MAPK and miR-141-PTEN-AKT signaling pathways when the PLUNC proteins are re-expressed in NPC cell lines.Further study about the mechanism of PLUNC protein family in pathogenesis of NPC has important significance for the prevention and treatment guidance of NPC.
人鼻黏膜表面的分泌物含有许多先天蛋白,其关键因子是SPLUNC1和LPLUNC1,它们是腭、肺和鼻上皮克隆(PLUNC)家族的成员。这两种蛋白在鼻咽上皮中高度表达,具有相对特异性。它们都具有细菌/通透性增加蛋白(BPI)结构域,可以与脂多糖(LPS)结合,直接抑制或杀死细菌生长。它们还具有免疫防御功能,可有效保护鼻咽上皮免受eb病毒和其他病原微生物的侵害。这些蛋白通过激活NF-κB和STAT3信号通路,抑制IL-6等炎症因子的分泌,在鼻咽上皮慢性炎症和癌变过程中发挥重要作用。此外,当PLUNC蛋白在鼻咽癌细胞系中重新表达时,它们还可以通过MAPK和miR-141-PTEN-AKT信号通路抑制鼻咽癌(NPC)细胞生长,诱导细胞凋亡。进一步研究PLUNC蛋白家族在鼻咽癌发病中的作用机制,对指导鼻咽癌的防治具有重要意义。
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引用次数: 7
Aging and related diseases: Research progress 衰老及其相关疾病:研究进展
IF 0.3 4区 生物学 Q4 Biochemistry, Genetics and Molecular Biology Pub Date : 2014-01-01 DOI: 10.3724/SP.J.1206.2014.00036
Jun-Ping Liu
Aging occurs with cell beginning to lose function in a variety of cell types. If it takes place in a given tissue or organ prematurely ahead of other tissues and organs,it causes pathological development of diseases. How to treat aging cells and associated molecules is a challenge in anti-aging research. It has been demonstrated recently that aging occurs under physiological conditions during embryonic development of mammals,and that to some life forms aging never occurs. Involved in diverse diseases,aging is difficult to be measured and does not have universal markers. It is thus essential to comprehend the types of cells that undergo aging in human diseases and thereby the underlying molecular mechanisms. This article discusses recent research advances including:(1) The concept,classification and relevant mechanisms of cell aging;(2) Physiological aging: Developmentally programmed senescence;(3) Tissue homeostasis and aging;(4) Cell replicative senescence and related diseases: telomeres and cancer prognosis,idiopathic pulmonary fibrosis,hypertension;(5) Non-replicative cell aging and related diseases: Parkinson disease and diabetes;(6) Species diversity in aging and longevity.
随着细胞开始丧失各种细胞类型的功能,衰老就发生了。如果它先于其他组织和器官过早地发生在特定的组织或器官中,它会导致疾病的病理发展。如何治疗衰老细胞及其相关分子是抗衰老研究的一个挑战。最近的研究表明,在哺乳动物胚胎发育过程中,衰老是在生理条件下发生的,而对某些生命形式来说,衰老从来没有发生过。衰老涉及多种疾病,难以测量,也没有普遍的标记。因此,有必要了解在人类疾病中经历衰老的细胞类型,从而了解潜在的分子机制。本文综述了近年来的研究进展,包括:(1)细胞衰老的概念、分类及相关机制;(2)生理性衰老:发育程序性衰老;(3)组织稳态与衰老;(4)细胞复制性衰老及相关疾病:端粒与癌症预后、特发性肺纤维化、高血压;(5)非复制性细胞衰老及相关疾病:帕金森病、糖尿病;(6)衰老与长寿的物种多样性。
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引用次数: 1
Cloning and Functional Characterization of a Novel Long Non-coding RNA Gene Associated With Hepatocellular Carcinoma 一种与肝细胞癌相关的新型长链非编码RNA基因的克隆和功能表征
IF 0.3 4区 生物学 Q4 Biochemistry, Genetics and Molecular Biology Pub Date : 2014-01-01 DOI: 10.3724/SP.J.1206.2012.00613
Gong Zj, Ming Zhou, Peng Sp, J. Ma, Xiaoyan Li, Hongbin Huang, Hongbin Huang, Y. Li, Xiaoling Li, H. Bo, Zeng Zy, Strong, Gui-yuan Li, Xiang Jj, W. Xiong, F. Wei, Zhang Wl, Liao Qj, K. Tang, Song Yl
Recently, we sequenced the transcriptomes of a hepatocellular carcinoma biopsy and a normal liver tissue using the RNA-Sequencing(RNA-Seq) strategy based on the Next Generation Sequencing(NGS) technique, and identified several adjacent high RNA-Seq signal peaks on chromosome 11q13.1 in the hepatocellular carcinoma biopsy, while not in the normal control tissue. In this chromosome region, there is no characterized genes have been identified, implying that these RNA-Seq peaks may represent one or more novel genes. Further study was confirmed that these RNA-Seq peaks were transcribed by one novel gene. Through cloning the full length of this novel gene, we found that this novel gene transcribed many splicing isoforms, and the longest isoform is 3 562 bp. Then we deposited twelve representative RNA isoforms into the GenBank database of the National Center for Biotechnology Information(NCBI), and created the GenBank IDs from KC136297 to KC136308 for these isoforms. None significant open reading fragment(ORF) was found in any transcripts of this novel gene, implying that this gene may encodes long non-coding RNAs(lncRNAs). To further elucidate the potential transcriptional regulation mechanism of this lncRNA gene, we predicted the promoter from the upstream sequence of the lncRNA gene using bioinformatic tools, and found that there is one potential promoter in-719 to-469 bp from the transcript start site of the lncRNA gene, and there are seven Sp1, one STAT5 and one EGR1 transcription factor binding sites in the promoter region. The molecular mechanisms of the lncRNA gene in carcinogenesis and progression of hepatocellular carcinoma are worthful for further investigation.
最近,我们利用基于下一代测序(NGS)技术的rna -测序(RNA-Seq)策略对肝细胞癌活检组织和正常肝组织的转录组进行了测序,并在肝细胞癌活检组织的11q13.1染色体上发现了几个相邻的高RNA-Seq信号峰,而在正常对照组织中则没有。在这个染色体区域,没有鉴定到特征基因,这意味着这些RNA-Seq峰可能代表一个或多个新基因。进一步的研究证实,这些RNA-Seq峰是由一个新基因转录的。通过克隆该新基因的全长,我们发现该新基因转录了多个剪接异构体,最长的异构体为3 562 bp。然后将12个具有代表性的RNA异构体存入国家生物技术信息中心(NCBI)的GenBank数据库,并为这些异构体创建了从KC136297到KC136308的GenBank id。在该基因的所有转录本中均未发现显著的开放阅读片段(ORF),这表明该基因可能编码长链非编码rna (lncRNAs)。为了进一步阐明该lncRNA基因潜在的转录调控机制,我们利用生物信息学工具对lncRNA基因上游序列的启动子进行了预测,发现在lncRNA基因转录起始位点719 ~ 469 bp处存在1个潜在启动子,并且在启动子区域存在7个Sp1、1个STAT5和1个EGR1转录因子结合位点。lncRNA基因在肝癌发生发展中的分子机制值得进一步研究。
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引用次数: 14
The effect of formaldehyde on cell cycle is in a concentration-dependent manner 甲醛对细胞周期的影响呈浓度依赖性
IF 0.3 4区 生物学 Q4 Biochemistry, Genetics and Molecular Biology Pub Date : 2013-07-01 DOI: 10.3724/SP.J.1206.2013.00079
Junye Miao, Jing Lu, Ziang Zhang, Zhiqian Tong, R. He
A certain concentration of formaldehyde can cause protein misfolding, cell death and biological dysfunction. Though it has been reported that formaldehyde has cytotoxicity, how formaldehyde affects cell cycle of neural cells and the molecular mechanism still needs to be clarified. In this study, neuroblastoma cell line SH-SY5Y was utilized to incubate with formaldehyde and the effect of formaldehyde on cell cycle was in formaldehyde concentration-dependent manner. No significant changes in cell cycle could be detected when[FA] ≤0.1 mmol/L (cells were incubated for 48 h), while the percentages of cells in S phase and G2/M phase were markedly increased with the elevation of formaldehyde concentration (0.1 mmol/L < [FA] ≤ 0.2 mmol/L). In the medium with 0.3 mmol/L formaldehyde, 46.28% of cells were in S phase while only 16.05% of them were in G2/M phase, that is, cell proliferation was obviously inhibited under the conditions. When cells were synchronized at G2/M phase, formaldehyde (0.1∼0.3 mmol/L) could markedly increase the number of cells in S phase, though, to some extent, the number of cells in G2/M phase decreased. When cells were synchronized at S phase, 0.1 mmol/L formaldehyde could decrease the number of cells in G2/M phase, while 0.3 mmol/L formaldehyde could markedly decrease the number of cells in G2/M phase and significantly increase that in S phase. In the presence of formaldehyde, primary neurons of SD rat exhibited similar changes in cell cycle as that in SH-SY5 Y cells. Furthermore, early and late apoptosis was markedly observed when 0.1 mmol/L ≤ [FA] ≤0.2 mmol/L, while DNA were obviously damaged and most cells were apoptosis and some of them underwent necrosis when [FA] ≤ 0.3 mmol/L. In sum, formaldehyde at a low concentration (0.1 mmol/L≤ [FA] ≤0.2 mmol/L) mainly suppresses DNA synthesis in S phase via hypermethylation of global DNA, while formaldehyde at a higher concentration ([FA] ≥ 0.3 mmol/L) causes DNA damage, both of them lead to the aberrant effects on cell cycle.
一定浓度的甲醛可引起蛋白质错误折叠、细胞死亡和生物功能障碍。虽然有报道称甲醛具有细胞毒性,但甲醛如何影响神经细胞的细胞周期及其分子机制尚不清楚。本研究以神经母细胞瘤细胞系SH-SY5Y与甲醛孵育,甲醛对细胞周期的影响呈浓度依赖性。当[FA]≤0.1 mmol/L(孵育48 h)时,细胞周期无明显变化,但随着甲醛浓度的升高(0.1 mmol/L < [FA]≤0.2 mmol/L), S期和G2/M期细胞比例明显增加。在0.3 mmol/L甲醛的培养基中,46.28%的细胞处于S期,而只有16.05%的细胞处于G2/M期,即在此条件下细胞增殖受到明显抑制。当细胞同步于G2/M期时,0.1 ~ 0.3 mmol/L甲醛能显著增加S期细胞数量,但在一定程度上减少G2/M期细胞数量。当细胞同步于S期时,0.1 mmol/L甲醛可使G2/M期细胞数量减少,0.3 mmol/L甲醛可使G2/M期细胞数量显著减少,S期细胞数量显著增加。在甲醛作用下,SD大鼠原代神经元的细胞周期变化与sh - sy5y细胞相似。当0.1 mmol/L≤[FA]≤0.2 mmol/L时,细胞出现明显的早期和晚期凋亡,当[FA]≤0.3 mmol/L时,细胞DNA明显受损,大部分细胞凋亡,部分细胞坏死。综上所述,低浓度甲醛(0.1 mmol/L≤[FA]≤0.2 mmol/L)主要通过整体DNA的超甲基化抑制S期DNA合成,而高浓度甲醛([FA]≥0.3 mmol/L)引起DNA损伤,两者都会对细胞周期产生异常影响。
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引用次数: 8
Inhibition of ERK1/2 Kinase Enhances BMP9-induced Osteogenic Differentiation of Mesenchymal Stem Cells*: Inhibition of ERK1/2 Kinase Enhances BMP9-induced Osteogenic Differentiation of Mesenchymal Stem Cells* 抑制ERK1/2激酶增强bmp9诱导的间充质干细胞成骨分化*:抑制ERK1/2激酶增强bmp9诱导的间充质干细胞成骨分化*
IF 0.3 4区 生物学 Q4 Biochemistry, Genetics and Molecular Biology Pub Date : 2013-01-08 DOI: 10.3724/SP.J.1206.2012.00170
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引用次数: 0
New Research Advances in Genetics Associated With High-density Lipoprotein Cholesterol*: New Research Advances in Genetics Associated With High-density Lipoprotein Cholesterol* 高密度脂蛋白胆固醇相关基因的新研究进展*:高密度脂蛋白胆固醇相关基因的新研究进展*
IF 0.3 4区 生物学 Q4 Biochemistry, Genetics and Molecular Biology Pub Date : 2013-01-08 DOI: 10.3724/SP.J.1206.2012.00140
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引用次数: 0
Effects of GABA Signal on Mouse Placenta Establishment in Early-Middle Phase*: Effects of GABA Signal on Mouse Placenta Establishment in Early-Middle Phase* GABA信号对小鼠早中期胎盘形成的影响*:GABA信号对小鼠早中期胎盘形成的影响*
IF 0.3 4区 生物学 Q4 Biochemistry, Genetics and Molecular Biology Pub Date : 2013-01-08 DOI: 10.3724/SP.J.1206.2012.00124
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引用次数: 0
Intein-Fused Lucine Zippers Increase Plasma Coagulation Activity by Improving Protein Trans -Splicing in Dual-Vector Factor VIII Gene Delivered Mice*: Intein-Fused Lucine Zippers Increase Plasma Coagulation Activity by Improving Protein Trans -Splicing in Dual-Vector Factor VIII Gene Delivered Mice* 融合荧光素拉链通过改善双载体因子VIII基因传递小鼠的蛋白质反式剪接提高血浆凝血活性*:融合荧光素拉链通过改善双载体因子VIII基因传递小鼠的蛋白质反式剪接提高血浆凝血活性*
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{"title":"Intein-Fused Lucine Zippers Increase Plasma Coagulation Activity by Improving Protein Trans -Splicing in Dual-Vector Factor VIII Gene Delivered Mice*: Intein-Fused Lucine Zippers Increase Plasma Coagulation Activity by Improving Protein Trans -Splicing in Dual-Vector Factor VIII Gene Delivered Mice*","authors":"Fu-xiang Zhu, Ze-long Liu, Jing Miao, Hui-ge Qu, Xiao-yan Chi","doi":"10.3724/SP.J.1206.2012.00202","DOIUrl":"https://doi.org/10.3724/SP.J.1206.2012.00202","url":null,"abstract":"","PeriodicalId":20655,"journal":{"name":"生物化学与生物物理进展","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2013-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81562294","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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