典型文献
A primer-initiated strand displacement amplification strategy for sensitive detection of 5-Hydroxymethylcytosine in genomic DNA
文献摘要：
5-Hydroxymethylcytosine(5hmC),an intermediate product of DNA demethylation,is important for the regulation of gene expression during development and even tumorigenesis.The challenges associated with determination of 5hmC level include its extremely low abundance and high structural similarity with other cytosine derivatives,which resulted in sophisticated treatment with large amount of sam-ple input.Herein,we developed a primer-initiated strand displacement amplification(PISDA)strategy to quantify the global 5hmC in genomic DNA from mammalian tissues with high sensitivity/selectivity,low input and simple operation.This sensitive fluorescence method is based on 5hmC-specific glucosylation,primer ligation and DNA amplification.After the primer was labeled on 5hmC site,DNA polymerase and nicking enzyme will repeatedly act on each primer,causing a significant increase of fluorescence signal to magnify the minor difference of 5hmC content from other cytosine derivatives.This method enables highly sensitive analysis of 5hmC with a detection limit of 0.003％in DNA(13.6 fmol,S/N=3)from sam-ple input of only 150 ng,which takes less than 15 min for determination.Further determination of 5hmC in different tissues not only confirms the widespread presence of 5hmC but also indicates its signifi-cant variation in different tissues and ages.Importantly,this PISDA strategy exhibits distinct advantages of bisulfite-free treatment,mild conditions and simple operation without the involvement of either ex-pensive equipment or large amount of DNA sample.This method can be easily performed in almost all research and medical laboratories,and would provide a promising prospect to detect global 5hmC in mammalian tissues.
文献关键词：
中图分类号：
作者姓名：
Yunda Li;Yanfei Zhang;Zhenning Yu;Yuzhi Xu;Si-Yang Liu;Zong Dai;Xiaoyong Zou
作者机构：
School of Chemistry,Sun Yat-sen University,Guangzhou 510275,China;Scientific Research Center,The Seventh Affiliated Hospital,Sun Yat-sen University,Shenzhen 518107,China;Key Laboratory of Sensing Technology and Biomedical Instrument of Guangdong Province,School of Biomedical Engineering,Sun Yat-sen University,Shenzhen 518107,China
文献出处：
引用格式：
[1]Yunda Li;Yanfei Zhang;Zhenning Yu;Yuzhi Xu;Si-Yang Liu;Zong Dai;Xiaoyong Zou-.A primer-initiated strand displacement amplification strategy for sensitive detection of 5-Hydroxymethylcytosine in genomic DNA)[J].中国化学快报（英文版）,2022(08):3777-3781
A类：
Hydroxymethylcytosine,PISDA,glucosylation,nicking,pensive
B类：
primer,initiated,strand,displacement,amplification,strategy,sensitive,detection,genomic,5hmC,intermediate,product,demethylation,important,regulation,expression,during,development,even,tumorigenesis,challenges,associated,determination,level,include,extremely,low,abundance,structural,similarity,other,derivatives,which,resulted,sophisticated,treatment,large,amount,input,Herein,we,developed,quantify,global,from,mammalian,tissues,sensitivity,selectivity,simple,operation,This,fluorescence,method,specific,ligation,After,was,labeled,site,polymerase,enzyme,will,repeatedly,act,each,causing,significant,increase,signal,magnify,minor,difference,content,enables,highly,analysis,limit,fmol,only,takes,less,than,Further,different,not,confirms,widespread,presence,but,also,indicates,variation,Importantly,this,exhibits,distinct,advantages,bisulfite,free,mild,conditions,without,involvement,either,equipment,sample,easily,performed,almost,research,medical,laboratories,would,provide,promising,prospect
AB值：
0.485488
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