Design guide for synthetic small regulatory RNAs for high-efficiency gene knockdown in bacteria
- 1Department of Biomedical Engineering, Chung-Ang University, Seoul 06974, Republic of Korea
Abstract
Small regulatory RNAs (sRNAs) are short noncoding RNAs that can fine-control the expression of target genes in trans at the post-transcriptional level in prokaryotes. Since there is a big challenge in constructing gene-knockout libraries, synthetic sRNAs have attracted considerable interest in synthetic biology and metabolic engineering, as they enable targeted gene knockdown without requiring chromosomal modifications. However, the development of high-efficiency synthetic sRNAs remains a demanding task that requires careful consideration of multiple design factors. Here, we provide a detailed protocol for the design and construction of synthetic sRNAs, detailing key design principles and critical optimization factors, including scaffold selection, target mRNA binding affinity, target mRNA secondary structure, and Hfq expression levels. This strategy can be broadly applied across E. coli and other bacterial hosts to modulate gene expression, thereby supporting versatile applications in synthetic biology and metabolic engineering.
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BibTeX
@article{ren2026design,
title = {{Design guide for synthetic small regulatory RNAs for high-efficiency gene knockdown in bacteria}},
author = {Jun Ren and Yubin Kim and Hyun Jung Nam and Hyang-Mi Lee and Dokyun Na},
journal = {The Journal of Microbiology},
year = {2026},
month = jul,
doi = {10.71150/jm.2603026},
url = {https://doi.org/10.71150/jm.2603026},
note = {CC BY 4.0},
}
RIS
TY - JOUR
TI - Design guide for synthetic small regulatory RNAs for high-efficiency gene knockdown in bacteria
AU - Jun Ren
AU - Yubin Kim
AU - Hyun Jung Nam
AU - Hyang-Mi Lee
AU - Dokyun Na
PY - 2026
DA - 2026/07/06
JO - The Journal of Microbiology
DO - 10.71150/jm.2603026
UR - https://doi.org/10.71150/jm.2603026
AB - Small regulatory RNAs (sRNAs) are short noncoding RNAs that can fine-control the expression of target genes in trans at the post-transcriptional level in prokaryotes. Since there is a big challenge in constructing gene-knockout libraries, synthetic sRNAs have attracted considerable interest in synthetic biology and metabolic engineering, as they enable targeted gene knockdown without requiring chromosomal modifications. However, the development of high-efficiency synthetic sRNAs remains a demanding task that requires careful consideration of multiple design factors. Here, we provide a detailed protocol for the design and construction of synthetic sRNAs, detailing key design principles and critical optimization factors, including scaffold selection, target mRNA binding affinity, target mRNA secondary structure, and Hfq expression levels. This strategy can be broadly applied across E. coli and other bacterial hosts to modulate gene expression, thereby supporting versatile applications in synthetic biology and metabolic engineering.
SN - 1225-8873
SN - 1976-3794
ER -