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Updated: Jul 15, 2026
12:38
Screening Peptides that Activate MRGPRX2 using Engineered HEK Cells
Published on: November 6, 2021
Use of the Peptide Barcode Method for Efficient Screening of mRNA Expression Control Sequence
Shun Kumano1, Kazuki Tanaka1, Akihiro Nojima1
1Research & Development Group, Hitachi, Ltd., Tokyo 185-8601, Japan.
Mass Spectrometry (Tokyo, Japan)
|July 13, 2026
Summary
This study introduces a novel peptide barcode method for rapidly screening messenger RNA (mRNA) regulatory sequences. This technique accelerates the development of targeted mRNA therapeutics by enabling simultaneous evaluation of multiple mRNA candidates.
Area of Science:
- Biotechnology
- Molecular Biology
- Drug Development
Background:
- Precise control of protein expression in target cells is crucial for messenger RNA (mRNA) therapeutics.
- Optimizing cell-type-specific regulatory sequences for mRNA is currently time-consuming.
Purpose of the Study:
- To develop a multiplexed evaluation methodology for efficient screening of mRNA expression control sequences.
- To accelerate the design and development of targeted mRNA therapeutics.
Main Methods:
- Utilized peptide barcodes fused to target proteins encoded by mRNA.
- Employed liquid chromatography-mass spectrometry (LC-MS) for quantification.
- Compared conventional individual transfections with simultaneous co-transfections.
Main Results:
- Successfully distinguished and quantified protein expression from individual mRNA candidates in a single mixed sample.
- Demonstrated that multiplexed evaluation using peptide barcodes yields results equivalent to individual evaluations.
- Showcased a significant reduction in the number of samples required.
Conclusions:
- The developed LC-MS-based multiplexed technology significantly enhances the screening efficiency of regulatory sequences.
- This approach is expected to accelerate the development of mRNA therapeutics with improved targeting specificity.
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