Establishment of a standard seed lot system of an Iranian Mumps virus strain; RS-12, for mass production of mumps and MMR vaccines

AUTHORS

M Shahkarami 1 , T Mokhtari Azad 2 , * , K Aghaiypour 3 , A Shafyi 4 , M Taqavian 4 , A Mohammadi 5

1 Human Viral Vaccines Department, Razi Vaccine and Serum Research Institute, karaj, Iran

2 Head of Virology Department, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran

3 Head of Genomics Lab., Biotechnology Department, Razi Vaccine and Serum Research Institute, Karaj, Iran

4 Member of scientific board, Human Viral Vaccines Department, Razi Vaccine and Serum Research Institute, Karaj, Iran

5 Head of Human Viral Vaccines Department, Razi Vaccine and Serum Research Institute, Karaj, Iran

How to Cite: Shahkarami M, Mokhtari Azad T, Aghaiypour K, Shafyi A, Taqavian M, et al. Establishment of a standard seed lot system of an Iranian Mumps virus strain; RS-12, for mass production of mumps and MMR vaccines, Iran Red Crescent Med J. 2012 ; 14(9):e95959.

ARTICLE INFORMATION

Iranian Red Crescent Medical Journal: 14 (9); e95959
Published Online: September 30, 2012
Article Type: Research Article
Received: July 03, 2019
Accepted: March 12, 2012

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Abstract

Background: At present the mumps virus strain used for production of mumps vaccine for our local use is Hoshino strain. However, according to our National public health policies, this strain should be replaced with a safer strain. Based on our previous data, the Iranian mumps strain; RS-12 has been proved to be the most suitable alternative to Hoshino strain with little or no adverse events following vaccination

Methods: The aim of the present study was to optimize propagation of RS-12 strain and prepare standard seeds for vaccine mass production.
The virus was inoculated to cells using different methods and different multiplicity of infection (MOI). The viral suspensions were harvested using different methods. Quality control tests were run at different stages.

Results: Maximum viral yield was achieved when cell suspensions were inoculated at MOI of 1:10 and incubated at 36-37ºC for 48 hours, followed by replacement of the media and incubation at 33-34 ºC for 5-7 days. Filtration did not affect the viral titre. A standard seed lot system was successfully established and experimental batches of MMR vaccines were produced.

Conclusion: The established seed lot system has met all requirements of WHO regulations and could be used in mass production of safe and efficacious mumps and MMR vaccines. Clinical trials are in progress for this newly produced vaccine.

Keywords

RS-12 MMR mumps vaccine

© 2012, Author(s). This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/) which permits copy and redistribute the material just in noncommercial usages, provided the original work is properly cited.

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