Authors: Bin Xiao Wei Li Gang Guo BoSheng Li Zhen Liu Bin Tang XuHu Mao QuanMing Zou
Publish Date: 2008/12/23
Volume: 36, Issue: 7, Pages: 1853-1858
Abstract
Natural antisense transcripts NATs are endogenous RNA molecules that exhibit partial or complete complementarity to other RNAs Studies have shown that NATs may participate in a broad range of gene regulatory events The identification of NATs in human mouse and Escherichia coli has revealed their widespread occurrence in both eukaryotic and prokaryotic life However little is known about NATs in Helicobacter pylori H pylori a human pathogen which is associated with gastric diseases Here we systematically screened NATs in H pylori by a novel experimental strategy based on RNase I protection assay We successfully constructed a cDNA library of NATs and developed a novel polyAtailed RTPCR method to monitor the expression of NATs After sequencing bioinformatic analysis and expression detection two novel NATs NAT39 and NAT67 were confirmed They were respectively complementary to the following genes ironregulated outer membrane protein frpB and periplasmic ironbinding protein ceuE Taken together the results suggest that NAT39 and NAT67 may participate in the regulation of iron homeostasis in H Pylori in a sequence complementary manner with target mRNAsWe would like to thank Dr Y Zhaohui Department of Microbiology Third Military Medical University China for technical assistance in construction of cDNA library This work was supported by Chinese National Natural Science Foundation project 30770113
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