Abstract

Continuous mRNA drugs manufacturing is perceived to nurture flow processes featuring quality by design, controlled automation, real time validation, robustness, and reproducibility, pertaining to regulatory harmonization. However, the actual adaptation of the latter remains elusive, hence batch-to-continuous transition would a priori necessitate holistic process understanding. In addition, the cost related to experimental, pilot manufacturing lines development and operations thereof renders such venture prohibitive. Systems-based Pharmaceutics 4.0 digital design enabling tools, i.e., converging mass and energy balance simulations, Monte-Carlo machine learning iterations, and spatial arrangement analysis were recruited herein to overcome the aforementioned barriers. The primary objective of this work is to hierarchically design the related bioprocesses, embedded in scalable devices, compatible with continuous operation. Our secondary objective is to harvest the obtained technological data and conduct resource commitment analysis. We herein demonstrate for first time the feasibility of the continuous, end-to-end production of sterile mRNA formulated into lipid nanocarriers, defining the equipment specifications and the desired operational space. Moreover, we find that the cell lysis modules and the linearization enzymes ascend as the principal resource-intensive model factors, accounting for 40% and 42% of the equipment and raw material, respectively. We calculate MSPD 1.30–1.45 €, demonstrating low margin lifecycle fluctuation.

Highlights

  • Since the early 1990s, Wolff et al [1] have demonstrated the feasibility of protein expression to rodents by injecting naked mRNA

  • Simulated moving bed (SMB) counter current, sorptive liquid chromatographic separation techniques of hydrophobic interaction HIC-201, ion-exchange AEX-201, and size exclusion SEC-201 are streamlined for the purification of the plasmid DNA population [10]

  • Was infused and cellular density > 107 cell/mL was documented by the S-101 supernatant optical density sensor [43]

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Summary

Introduction

Since the early 1990s, Wolff et al [1] have demonstrated the feasibility of protein expression to rodents by injecting naked mRNA. The driving clinical force behind RNA-based drug development remained unchanged, the mechanism of action neither causes genomic integrational mutation nor promotes toxic immune responses [2]. Due to its transient bioavailability profile, RNA administration may be discontinued and/or regulated. The central of RNA production steps, namely the in vitro transcription (IVT) reaction, does not require viral promoter inclusion, which may be associated with dual risks of uncontrolled genomic insertions and pathogenic changes of protein expression. The clinical application of mRNA remained elusive for two decades, reflecting the instability and immunogenicity-related toxicity concerns

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