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Sung-Wook Ji

Korea University · Biochemistry, Genetics and Molecular Biology

About the Lab

Professor Sung-Wook Ji's research lab specializes in molecular biology and RNA therapeutics, focusing on the rational design of small interfering RNAs (siRNAs) to achieve precise gene silencing with minimal off-target effects. The lab investigates the mechanisms of RNA-induced silencing complex (RISC) activity and develops chemical strategies to enhance target specificity by leveraging the 'transitional nucleation' model, which emphasizes seed region pairing (positions 2–6) for selective gene regulation. Their work aims to overcome a major limitation in RNAi therapeutics—off-target repression—by engineering siRNAs that mimic endogenous microRNAs while maintaining high specificity. The lab also explores the structural and kinetic principles underlying RNA-RNA interactions to guide the development of next-generation gene-silencing tools.

siRNA designoff-target suppressionRNAi therapeuticsRISC complextransitional nucleation

Research Overview

Papers
2
Total Citations
6
Papers (5y)
2
Primary Field
Biochemistry, Genetics and Molecular Biology

Research Output Trend

Figures are computed from collected data and may differ slightly.

Publications per year (5y)
2total
2016
2026
Citations per year (5y)
6total
20162026

Selected Papers

2
1
Article|6 citations·2016
Rationally designed siRNAs without miRNA-like off-target repression
석희영, 장은숙, 지성욱

Small interfering RNAs (siRNAs) have been developed to intentionally repress a specific gene expression by directing RNA-induced silencing complex (RISC), mimicking the endogenous gene silencer, microRNAs (miRNAs). Although siRNA is designed to be perfectly complementary to an intended target mRNA, it also suppresses hundreds of off-targets by the way that miRNAs recognize targets. Until now, there is no efficient way to avoid such off-target repression, although the mode of miRNA-like interacti

2
Article|0 citations·2026
Abasic CRISPR RNAs inherently harness fidelity of SpCas9 for genome editing
Dowoon Gu, Geun-Woo D. Kim, Mingyo Park, Alexander Doh Park, Hye-Sook Lee, Sangkyeong Eom, Haban Weon, Jongyeun Park, J. H. Lee, Seung Hyun Ahn, H E Oh, Jaeyoung Kim
SJR Q1Nature Chemical Biology
Molecular BiologyBiochemistry, Genetics and Molecular Biology

Research Areas

Molecular Biology

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