Regulatory, biosafety and safety challenges for novel cells as substrates for human vaccines

Vaccine
Ralf D HessSiegfried Schmitt

Abstract

In the development of novel substrates used for production of human vaccines there has been significant progress made in recent years. Emerging and re-emerging infectious diseases like the recent porcine Influenza A virus (H1N1) pandemic necessitated the availability of unprecedented amounts of vaccines. In addition, the high demand for vaccines in the industrialised countries has also been paralleled by a steep increase in demand in developing countries. The manufacturing capability for viral vaccines produced in embryonated hen eggs and conventional/classical cell substrates, such as chicken embryo fibroblasts, has now reached its capacity limit. This constraint may be overcome by utilising other recognised cell substrates such as Madin Darby Canine Kidney (MDCK) (dog origin), Chinese Hamster Ovary (CHO) (hamster cells) or Vero cells (monkey origin) or as an alternative, introduce new cell substrates of human or avian origin. Using new cell substrates may prove to be a highly replication-proficient way of producing live viral vaccines such as Influenza A viruses. Despite some advantages, cell substrates may pose a small residual risk to humans since some of them are known to be tumourigenic in immunosuppressed animals. Howeve...Continue Reading

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Apr 16, 2014·Viruses·Ingo Jordan, Volker Sandig
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Oct 30, 2019·Vaccine: X·Nichole Orr-BurksRalph A Tripp

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