Bioprocessing Advances in Vaccine Manufacture - Pharmaceutical Technology

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Bioprocessing Advances in Vaccine Manufacture
Advances in techniques and single-use systems are revolutionizing vaccine manufacturing.

PTSM: Pharmaceutical Technology Sourcing and Management
Volume 9, Issue 9

The vaccine industry, particularly, in major Western markets, continues to be dominated by a few major, long-established players that primarily manufacture aging, long-marketed, non-recombinant (nongenetically engineered) vaccines. The industry, however, will be changing in the coming years and this change may come rather rapidly. According to BioPlan's recently released analysis of 10-year industry trends (1), a confluence of technological advances in bioprocessing is making vaccine manufacture cheaper, faster, and simpler. These advances include:

  • Single-use systems (SUS)/disposable bioprocessing systems
  • Modular/transportable bioprocessing facilities
  • Novel expression systems/improved cell lines
  • New purification technologies.

Ronald A. Rader
As these technologies advance and are increasingly adopted for commercial-scale manufacturing, the industry will see an evolution in vaccine manufacture. Significant improvements are now commonly being reported as companies develop, adopt, and adapt bioprocessing technologies to vaccine manufacture.

Eric Langer
Single use adoption
BioPlan's 10th Annual Report documents increasing adoption of these technologies and their impact on biopharmaceutical manufacturers. Survey data show that bioprocessing at pre-commercial scales, such as manufacture for clinical trials, is now thoroughly dominated by SUS (i.e., disposables) use. This increase included 78% of those surveyed reporting current use of SUS bioreactors and 92% using SUS filter cartridges at some level in bioprocessing (see Figure 1).

Figure 1: Selected single-use applications in biomanufacturing. (FIGURE 1 IS COURTESY OF THE AUTHOR)
SUS have moved into large-scale vaccines manufacture more slowly, partly due to the demands for large-scale equipment. In the BioPlan study, vendors were asked if they provide sufficiently scalable single-use disposables and techniques. Overall, 53% of the industry considers scale to be a significant adoption restriction. And vaccine manufacturers place inability to scale up SUS devices high on the list of concerns. SUS involve one-time use of bioprocessing equipment composed of plastics, not traditional stainless steel. SUS allow flexible manufacture when, and at the scale needed, with substantial reductions in costs and time, including presterilized equipment. In contrast, stainless-steel bioreactor-anchored facilities require costly and complex infrastructure, which further includes complex piping, including steam used for sterilizing stainless-steel equipment so it may be reused, which adds weeks to batch turnaround time.

Currently, SUS bioreactors top out at 2000 L, with many engineering challenges (e.g., weight) when larger. Where this does not provide sufficient manufacturing capacity, multiple parallel SUS process lines can be implemented. With advancing SUS technology, better plastics and new designs are being developed using SUS (vs. stainless steel) for their application in precommercial R&D, clinical-trial-material supply, and commercial manufacture. This use of SUS is projected to result in the market (primarily US and EU) for SUS equipment at a commercial scale growing 1000% in five years to $1.5 billion/year (2).


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