Comparison of Maglev Centrifugal Pump and Quaternary Diaphragm Pump Effects on mRNA encapsulated LNP
Exhibitor: LEVITRONIX GMBH TAIWAN BRANCH
Date: 2023-05-29
Booth No.: L707
Facts
In gene therapy manufacturing, Lipid Nanoparticles (LNPs) require gentle processing that protects the encapsulated mRNA/DNA from degradation. Pump induced shear stress can break down LNPs, resulting in a reduced mRNA encapsulation.
In comparison to a Levitronix pump, a 4-Piston Diaphragm Pump consists of multiple valves that restrict fluid motion to the desired direction. Valve interaction can lead to shear stress, which can result in damaged Lipid Nanoparticles (LNPs).
Test conditions
The Levitronix PuraLev 2000SU and a 4-Piston Diaphragm pump of corresponding hydraulic power were compared by observing their effect evaluated for stress created and its effect on LNP quality, namely average particle size, polydispersity index and mRNA encapsulation. A fixed volume of LNP suspension was pumped in two identical closed-loop configurations. The flow rate of each pump was set to 23 and 50 lpm, and backpressures of 30 and 45 psi, respectively. Average LNP size, dispersity index and mRNA encapsulation were measured at selected times and compared.
Results
Average LNP size, dispersity index and mRNA encapsulation did not change with the PuraLev 2000SU during the entire test. In contrast, the 4‐piston diaphragm pump had a significant impact on all three LNP parameters.
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