Effect of chemical stabilizers on the thermostability and infectivity of a representative panel of freeze dried viruses

As a partner of the European Virus Archive (EVA) FP7 project, our laboratory maintains a large collection of freeze-dried viruses. The distribution of these viruses to academic researchers, public health organizations and industry is one major aim of the EVA consortium. It is known that lyophilizati...

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Veröffentlicht in:PloS one 2015-04, Vol.10 (4), p.e0118963-e0118963
Hauptverfasser: Pastorino, Boris, Baronti, Cecile, Gould, Ernest A, Charrel, Remi N, de Lamballerie, Xavier
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container_issue 4
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container_title PloS one
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creator Pastorino, Boris
Baronti, Cecile
Gould, Ernest A
Charrel, Remi N
de Lamballerie, Xavier
description As a partner of the European Virus Archive (EVA) FP7 project, our laboratory maintains a large collection of freeze-dried viruses. The distribution of these viruses to academic researchers, public health organizations and industry is one major aim of the EVA consortium. It is known that lyophilization requires appropriate stabilizers to prevent inactivation of the virus. However, few studies have investigated the influence of different stabilizers and lyophilization protocols on the thermostability of different viruses. In order to identify optimal lyophilization conditions that will deliver maximum retention of viral infectivity titre, different stabilizer formulations containing trehalose, sorbitol, sucrose or foetal bovine serum were evaluated for their efficacy in stabilizing a representative panel of freeze dried viruses at different storage temperatures (-20°C, +4°C and +20°C) for one week, the two latter mimicking suboptimal shipping conditions. The Tissue Culture Infectious Dose 50% (TCID50) assay was used to compare the titres of infectious virus. The results obtained using four relevant and model viruses (enveloped/non enveloped RNA/DNA viruses) still serve to improve the freeze drying conditions needed for the development and the distribution of a large virus collection.
doi_str_mv 10.1371/journal.pone.0118963
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The distribution of these viruses to academic researchers, public health organizations and industry is one major aim of the EVA consortium. It is known that lyophilization requires appropriate stabilizers to prevent inactivation of the virus. However, few studies have investigated the influence of different stabilizers and lyophilization protocols on the thermostability of different viruses. In order to identify optimal lyophilization conditions that will deliver maximum retention of viral infectivity titre, different stabilizer formulations containing trehalose, sorbitol, sucrose or foetal bovine serum were evaluated for their efficacy in stabilizing a representative panel of freeze dried viruses at different storage temperatures (-20°C, +4°C and +20°C) for one week, the two latter mimicking suboptimal shipping conditions. The Tissue Culture Infectious Dose 50% (TCID50) assay was used to compare the titres of infectious virus. 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subjects Cell Line
Chikungunya virus
Collection
Consortia
Deactivation
Deoxyribonucleic acid
DNA
DNA viruses
Excipients - pharmacology
Formulations
Freeze drying
Freeze Drying - methods
Humans
Inactivation
Infectious diseases
Infectivity
Mimicry
Public health
Ribonucleic acid
RNA
RNA viruses
RNA Viruses - drug effects
RNA Viruses - pathogenicity
Shipping
Sorbitol
Stabilizers (agents)
Sucrose
Sugar
Temperature
Thermal stability
Tissue culture
Trehalose
Viruses
title Effect of chemical stabilizers on the thermostability and infectivity of a representative panel of freeze dried viruses
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