Resources

Understand our manufacturing process from start to finish, and the cutting edge capabilities we utilise for it.

Our Process

mRNA Synthesis
Our expert molecular biologists can work with you in designing your sequence. Codon optimisation and linear design are routinely conducted to improve stability and protein expression of the gene. Sanger or Nanopore sequencing is carried out on the finalised sequence prior to cloning the gene into our vector built in with a 125A poly (A) tail.
We synthesise high quality DNA template with PCR conditions optimised specific for your gene. The template length and purity is validated using agarose gel electrophoresis and UV-Vis Spectrometry.
In vitro transcription is used to synthesise high quality and pure mRNA that is scalable to large quantities. The mRNA can be customised to your application with the inclusion of modified nucleosides, a 5’ cap and preferred length of 3’ polyadenyline (poly-A) tail. We also perform sequence optimisation to ensure your product has higher protein production efficiency.
Our best practice quality control to validate mRNA integrity and purity includes agarose gel electrophoresis and UV-Vis Spectrometry. Other assays include analysis of dsRNA, automated Gel Electrophoresis, mRNA nanopore sequencing. Additionally, mRNA transfection into cells using a standard vector can be conducted upon request.
LNP Formulation
We utilise toroidal micromixing under set flow rate and ratio conditions to generate our standard LNP formulations with uniform sizes and high mRNA encapsulation efficiency.
After formulating mRNA, we form the final LNP structures through buffer exchange (dialysis) to physiological pH. One of two methods of dialysis – cassette-based, or diafiltration – are used based on what is suitable for the formulation. Post-dialysis, our LNPs are further concentrated if necessary.
Our post-dialysis processing of LNPs involves concentrating them to a concentration optimal for your desired experimental application, and the addition of a cryoprotectant to stabilise your LNPs during storage.
To validate the quality of our LNP products, we perform size and polydispersity analysis. Our products are then sterile filtered through a 0.22 μm filter to ensure the solutions are microbe-free. We finally assess mRNA encapsulation efficiency and concentration. For each batch, we perform freeze-thaw stability analysis on a separate aliquot to make sure your product will be ready for you to use, whenever you need to use it.
Quality Control & Analysis

mRNA synthesis

Sequence Identity (DNA template)
Sanger / Nanopore sequencing
Sequence Identity (mRNA)
Nanopore sequencing
mRNA Concentration and Purity
UV/Vis spectrometry
mRNA Length / Integrity
Agarose Gel Electrophoresis
Automated Gel Electrophoresis using Bioanalyzer
dsRNA Analysis
Dot Blot / ELISA
mRNA Efficiency (reporter sequences only)
In vitro cell transfection

LNP formulation

Concentration
Ribogreen Assay or UV/Vis spectrometry
Encapsulation Efficiency
Ribogreen Assay
Particle Size, Uniformity and Zeta
Dynamic light scattering
Freeze-Thaw Stability
Dynamic light scattering
Final Product Sterility
Sterile filtration (0.22 μm)
Storage and Handling

mRNA

A guide for getting the most out of your mRNA product.

  • mRNA must be stored at -80°C until use.

  • When ready to be used, it can be thawed in the fridge or at room temperature. Once thawed, making single use aliquots is recommended.

  • Single use aliquots can be stored at -80°C and reused up to two times without significant loss of potency, but multiple freeze-thawing is not recommended.

  • mRNA should not be vortexed. A gentle inversion of the tubes followed by a quick pulse spin on a microcentrifuge is sufficient to mix the formulations.

  • When working with mRNA, RNase free consumables and reagents should be used.

  • If dilution is required, dilute using nuclease-free water.

Storage and Handling

Lipid Nanoparticles

A guide for getting the most out of your mRNA-LNP product.

  • LNP formulations must be stored at -80°C until use.

  • We provide the formulations as a single use aliquot. When ready for use, the tube should be thawed at ambient temperature for about 30 minutes.

  • Never keep LNPs on ice, and multiple freeze-thawing is not recommended. When thawed, our LNPs can be stored at 4°C for approximately 1 week without a significant reduction in potency.

  • LNP formulations must be handled with care to prevent risk of aggregation. Changes in the morphology of LNPs can lead to mRNA leakage, resulting in a reduction in encapsulation efficiency and LNP activity.

  • The formulations should not be vortexed. A gentle inversion of the tube followed by a quick pulse spin on a microcentrifuge is sufficient to ensure a uniform suspension of particles.

mRNA Core Capabilities

mRNA Core is equipped with a diverse range of equipment for production, quality control and analysis.

: Cytiva

Small-scale lipid nanoparticle production is achieved with Cytiva’s Ignite Nanoassemblr.

: Knauer

Large-scale lipid nanoparticle production is achieved with Knauer IJM Pro.

: Unchained Labs

Stunner from Unchained Labs measures size and concentration of Lipid Nanoparticles through UV/Vis spectrometry and dynamic light scattering. Alternatively, Malvern Instruments ZetaSizer Nano ZS is used for analysis and quality control of LNP formulations.

: Formulatrix

Formulatrix μPULSE V3 is a miniaturised tangential flow filtration system for lipid nanoparticle production. The facility is also equipped with Repligen KrosFlo Kr2i and Sartorius SartoFlow Smart for large scale tangential flow filtration.

: Luminex

Luminex Magpix is a cost effective multiplex instrument for assessment of mRNA vaccine innate and adaptive immune responses.

: Agilent

Agilent 1260 Infinity II is a sensitive UHPLC for quantification of RNA concentration, purity and quality. Cytiva Akta Pure is available in the facility for large scale mRNA and protein purification.

: Thermo Fisher Scientific

The Vanquish is a UHPLC with a CAD detector for quantification and quality control for formulation lipids.

: Bio-Rad

Nucleic acid gel analysis for DNA/RNA quality control is conducted with Bio-Rad Touch ChemiDoc.

: Bioair

Bioair Safemate 1.8 Eco+ is used for sterile applications including cell culture, in vitro assays and sterile quality control for manufacturing products.