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Updated: Oct 18, 2025

Optimization of In vitro Transcription Reaction for mRNA Production Using Chromatographic At-Line Monitoring
Published on: April 4, 2025
Pharma 4.0 Continuous mRNA Drug Products Manufacturing
Andreas Ouranidis1,2, Christina Davidopoulou1, Reald-Konstantinos Tashi2
1Department of Pharmaceutical Technology, School of Pharmacy, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece.
Continuous manufacturing of mRNA drugs is challenging but achievable using digital design tools. This study demonstrates a feasible end-to-end process for sterile mRNA production, identifying key resource-intensive steps for cost-effective development.
Area of Science:
- Pharmaceutical Manufacturing
- Biotechnology
- Process Engineering
Background:
- Continuous manufacturing of mRNA drugs offers advantages like quality by design and automation but faces challenges in process understanding and high development costs.
- Transitioning from batch to continuous processes requires a holistic understanding and overcoming financial barriers associated with pilot line development.
Purpose of the Study:
- To hierarchically design continuous bioprocesses for scalable, end-to-end sterile mRNA production using digital tools.
- To analyze resource commitment and identify key cost drivers in continuous mRNA manufacturing.
Main Methods:
- Utilized Systems-based Pharmaceutics 4.0 digital design tools, including mass/energy balance simulations, Monte-Carlo machine learning, and spatial analysis.
- Developed and validated a continuous, end-to-end process for sterile mRNA formulation into lipid nanocarriers.
- Conducted resource commitment analysis to identify major cost factors.
Main Results:
- Demonstrated the first feasible continuous, end-to-end production of sterile mRNA formulated into lipid nanocarriers.
- Defined equipment specifications and operational space for the continuous bioprocess.
- Identified cell lysis modules (40% equipment cost) and linearization enzymes (42% raw material cost) as principal resource-intensive factors.
Conclusions:
- Digital design tools enable the overcoming of barriers in continuous mRNA manufacturing, facilitating scalable and robust processes.
- The developed continuous process offers a cost-effective solution with low margin lifecycle fluctuation (MSPD 1.30-1.45 €).
- Understanding and optimizing resource-intensive steps like cell lysis and enzyme usage are crucial for economic viability in continuous mRNA production.
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