中文摘要：

细菌代谢工程需要优化基因的表达来平衡代谢物通量分布和减少有毒的中间体积累,从而提高产物生物合成。细菌小RNA（small RNA,sRNAs）与靶标mRNA通过碱基互补配对结合来抑制或激活其靶标基因的表达。sRNA在细菌的生理过程中都起到了至关重要的调控作用,因此被认为是细菌代谢工程中调节靶标基因表达的有力工具。近年来,越来越多的人工合成sRNA在细菌代谢工程中得到应用,分别就细菌sRNA的靶标识别和其对靶标的调控及代谢工程中的应用做了总结概括。

英文摘要：

Metabolic engineering in bacteria requires optimization of gene expression levels to balance metabolic flux distributions and minimize accumulation of toxic intermediates towards an efficient biosynthesis of target products. Small non-coding RNAs （sRNAs） in bacteria can interact with their target mRNA by base- pairing to inhibit or activate the translation of their target genes. Since small RNAs play critical regulatory roles in many physiological processes, they are considered to be powerful tools for the tuning of target genes expression in bacterial metabolic engineering. Many artificial sRNAs are applied in metabolic engineering in recent years. The identification of sRNA targes genes, interaction between sRNAs and their targets and application of sRNAs in metabolic engineering were summarized.