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Home Science News Biology

Could smart guide RNAs usher in an era of personalized medicine?

July 23, 2024
in Biology
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Schematic of a multi-signal integrated precision control guide RNA that enables immediate endogenous gene expression control based on the logic of multiple RNA expression combinatorics
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Guides typically assist tourists with directions, but the experience could be greatly enhanced if they offered personalized services tailored to individual interests. Recently, researchers have transformed guide RNAs, which direct enzymes, into a smart RNA capable of controlling networks in response to various signals. This innovative research is gaining significant attention in the academic community.

Schematic of a multi-signal integrated precision control guide RNA that enables immediate endogenous gene expression control based on the logic of multiple RNA expression combinatorics

Credit: POSTECH

Guides typically assist tourists with directions, but the experience could be greatly enhanced if they offered personalized services tailored to individual interests. Recently, researchers have transformed guide RNAs, which direct enzymes, into a smart RNA capable of controlling networks in response to various signals. This innovative research is gaining significant attention in the academic community.

 

A research team consisting of Professor Jongmin Kim and PhD candidates Hansol Kang and Dongwon Park from the Department of Life Sciences at POSTECH has developed a multi-signal processing guide RNA. This guide RNA can be programmed to logically regulate gene expression. Their findings were recently published in Nucleic Acids Research, an international journal of molecular biology and biochemistry.

 

The CRISPR/Cas system, often referred to as “gene scissors,” is a technology capable of editing gene sequences to add or delete biological functions. Central to this technology, which is used in several fields such as treating genetic diseases and genetically engineering crops, is a guide RNA that directs the enzyme to edit the gene sequence at a specific location. While advances in RNA engineering have spurred research into guide RNAs that respond to biological signals, achieving precise control of networks of genes to respond to multiple signals has remained challenging.

 

In this study, the team combined the CRISPR/Cas system with biocomputing to overcome these limitations. Biocomputing is a technology that connects biological components like electronic circuits to program cellular and organismal activities. The researchers implemented a guide RNA gene circuit capable of decision-making based on inputs, similar to a Boolean logic gate, which is one of the fundamental representations of input-output relationships in digitized signal operations.

 

The team successfully controlled essential genes involved in E. coli metabolism and cell division, demonstrating the capability to combine multiple logic gates for processing various signals and complex inputs. They used this circuit to control cell morphology and metabolic flows at the appropriate level.

 

This study is significant because it integrates existing systems and technologies to precisely control gene networks, enabling the processing, integration, and response to diverse signals within an organism. This goes beyond the role of guide RNAs in merely directing enzymes to specific locations.

 

Professor Jongmin Kim of POSTECH stated, “The research could enable the precise design of gene therapies based on biological signals within complex genetic circuits involved in disease.” He added, “RNA molecular engineering allows for the simplicity of software-based structure design which will significantly advance the development of personalized treatments for cancer, genetic disorders, metabolic diseases, and more.”

 

The research was conducted with grants from the Ministry of Science and ICT and the National Research Foundation of Korea, and support from the LINC Program of the National Research Foundation of Korea and the Ministry of Education, a program of Korea Basic Science Institute and LINC 3.0 sponsored by the Ministry of Education, the Korea Health Technology R&D Program of the Korea Health Industry Development Institute (KHIDI), the Program for Fostering and Supporting Food Tech R&D Centers of North Gyeongsang Province and Pohang, and IBS POSTECH.



Journal

Nucleic Acids Research

DOI

10.1093/nar/gkae549

Article Title

Logical regulation of endogenous gene expression using programmable, multi-input processing CRISPR guide RNAs

Article Publication Date

29-Jun-2024

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