Recurrent genome copy number aberrations are known to be a common feature of many cancers,including hepatocellular carcinoma(HCC),and their analysis is expected to reveal genes involved in *** copy number variation(CN...
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Recurrent genome copy number aberrations are known to be a common feature of many cancers,including hepatocellular carcinoma(HCC),and their analysis is expected to reveal genes involved in *** copy number variation(CNV)is one of the mechanisms to regulate the expression level of genes which contributes to the development and progression of ***,in many regions with high frequency copy number variations(CNVs),the aberrantly expressed protein-coding genes is unable to make a sense,which suggests that the mechanisms underlying carcinogenesis may be partly contributed to the differently expression of long non-coding RNAs(IncRNAs).We carried out an association analysis of lncRNAs expression microarray and genome copy number variations data in HCC was and identified a set of lncRNAs whose expression levels correlated with common chromosomal *** we examined the relative copy number and expression levels of the related lncRNAs at candidate regions in 42 pairs HBV-related HCC and paired adjacent nontumor tissues via real-time quantitative PCR *** these lncRNA-PRAL(P53 Regulatory Associated LncRNA)is consistently decreased(p<0.001,n=42)with a significant correlation with the copy number variations(R=0.537,p=0.006).We further found that IncRNA-PRAL could promote the tumor cell apoptosis and suppress the progress of carcinogenesis in ***,lncRNA-PRAL can participate in HSP90-p53 protein complex formation to help facilitate the nuclear transportation of p53.A large amount of regions of high frequent copy number variations can be ascribed to the lncRNAs genome *** lncRNA-PRAL can promotes the tumor cell apoptosis through p53 and it presents this functional copy-number variation as a potential therapeutic target for HCC.
A new class of non-coding RNAs,designated long non-coding RNAs(lncRNAs),was recently found to be frequently deregulated in various *** previous data suggested that lncRNAs are likely to have biological effects,this po...
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A new class of non-coding RNAs,designated long non-coding RNAs(lncRNAs),was recently found to be frequently deregulated in various *** previous data suggested that lncRNAs are likely to have biological effects,this possibility needs to be confirmed by specific hypothesis-driven *** the precise molecular mechanisms by which lncRNAs function in various diseases will be critical for exploring new potential strategies for early diagnosis and *** the past several years,multiple studies have demonstrated that nearly every step in the life cycle of a gene can be regulated by lncRNAs.
Department of Medical Genetics,Second Military Medical University,Shanghai,China The Third Department of Hepatic Surgery,Eastern Hepatobiliary Hospital,Second Military Medical University,Shanghai,China
Department of Medical Genetics,Second Military Medical University,Shanghai,China The Third Department of Hepatic Surgery,Eastern Hepatobiliary Hospital,Second Military Medical University,Shanghai,China
The liver is frequently subject to insult because of viral infection,alcohol abuse,or toxic chemical *** research has been conducted to identify blood markers that can better discern liver damage,but little progress h...
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The liver is frequently subject to insult because of viral infection,alcohol abuse,or toxic chemical *** research has been conducted to identify blood markers that can better discern liver damage,but little progress has been achieved in clinical ***,circulating microRNAs(miRNAs) have been reported as potential biomarkers for the noninvasive diagnosis of *** this study,we investigated whether plasna miRNAs have diagnostic utility in identifying liver *** study was divided into 2 phases marker selection by real-time quantitative PCR analysis of a small set of plasma samples,and marker validation with a large set of plasma samples from patients with chronic hepatitis B viral infections and healthy *** mouse model systems. D-galactosamine- and alcoholinduced liver injury,were also developed to evaluate whether differences in miRNA concentration were associated with various liver *** the miRNA candidates identified,miR-122 presented a disease severity- dependent change in plasma concentration in the patients and animal *** with an increase in aminotransferase activity in the blood,the change in miR-122 concentration appeared ***,this change was more specific for liver injury than for other organ damage and was more reliable,because the change was correlated with liver histologic ***:Our findings suggest that circulating miR-122 has potential as a novel. predictive,and reliable blood marker for viral-,alcohol-,and chemicalinduced liver injury.
The human transcriptome comprises not only large numbers of protein-coding messenger RNA(mRNAs) but also a large set of non-protein coding transcripts that have structural,regulatory or unknown functions. Although st...
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The human transcriptome comprises not only large numbers of protein-coding messenger RNA(mRNAs) but also a large set of non-protein coding transcripts that have structural,regulatory or unknown functions. Although studies of small non-coding RNAs (18 to 200 nucleotides (nt)) have dominated the field of RNA biology in recent years,a surprisingly wide arcay of cellular functions has also been associated with long non-coding RNAs (1ncRNAs).IncRNA-HEIH is an oncogenic INcRNA that promotes tumor progression and leads us to propose that 1ncRNAs may serve as key regulatory hubs in HCC progression.
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