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Development and biological properties of a new live attenuated mumps vaccine

Shizuko Saika1, Minoru Kidokoro, Hiroko Kubonoya

  • 1Chiba Prefectural Institute of Public Health, 666-2 Nitona-Cho, Chuo-Ku, Chiba-City, Chiba 260-8715, Japan. s.sik@ma.pref.chiba.jp

Comparative Immunology, Microbiology and Infectious Diseases
|May 2, 2006
PubMed

Insights

A novel live attenuated mumps vaccine candidate, Y125, was developed from the Y7 strain. This promising mumps vaccine shows safety and induces neutralizing antibodies in monkeys.

Area of Science:

  • Virology
  • Vaccinology
  • Immunology

Background:

  • Mumps is a contagious viral illness that can lead to serious complications.
  • Development of safe and effective live attenuated mumps vaccines is crucial for public health.

Purpose of the Study:

  • To develop and characterize a novel live attenuated mumps vaccine candidate.
  • To assess the safety and immunogenicity of the Y125 strain in preclinical models.

Main Methods:

  • A wild mumps Y7 strain was mutagenized using nitrosoguanidine and UV radiation.
  • A temperature-sensitive clone, Y125, was selected and characterized in Vero cells.
  • Neurovirulence was evaluated in marmosets and neonatal rats; immunogenicity was assessed in monkeys.

Main Results:

  • The Y125 clone demonstrated stable temperature-sensitivity.
  • Y125 caused minimal histopathological changes in marmosets and did not induce hydrocephalus in rats.
  • Subcutaneous inoculation of Y125 elicited high neutralizing antibody titers in Cercopithecus monkeys.

Conclusions:

  • The Y125 strain exhibits promising safety and immunogenicity profiles.
  • Y125 represents a potential candidate for a live attenuated mumps vaccine.
  • Further human field trials are warranted to confirm efficacy and safety.

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