Inactivation of Influenza A virus, Adenovirus, and Cytomegalovirus with PAXgene tissue fixative and formalin.

Abstract:

:Formalin fixation is known to inactivate most viruses in a vaccine production context, but nothing is published about virus activity in tissues treated with alternative, non-crosslinking fixatives. We used a model assay based on cell culture to test formalin and PAXgene Tissue fixative for their virus-inactivating abilities. MDCK, A549, and MRC-5 cells were infected with Influenza A virus, Adenovirus, and Cytomegalovirus, respectively. When 75% of the cells showed a cytopathic effect (CPE), the cells were harvested and incubated for 15 min, or 1, 3, 6, or 24 hours, with PBS (positive control), 4% formalin, or PAXgene Tissue Fix. The cells were disrupted and the released virus was used to infect fresh MDCK, A549, and MRC-5 cells cultured on cover slips in 24-well plates. The viral cultures were monitored for CPE and by immunocytochemistry (ICC) to record viral replication and infectivity. Inactivation of Adenovirus by formalin occurred after 3 h, while Influenza A virus as well as Cytomegalovirus were inactivated by formalin after 15 min. All three virus strains were inactivated by PAXgene Tissue fixative after 15 min. We conclude that PAXgene Tissue fixative is at least as effective as formalin in inactivating infectivity of Influenza A virus, Adenovirus, and Cytomegalovirus.

journal_name

Biopreserv Biobank

authors

Kap M,Arron GI,Loibner M,Hausleitner A,Siaulyte G,Zatloukal K,Murk JL,Riegman P

doi

10.1089/bio.2013.0010

subject

Has Abstract

pub_date

2013-08-01 00:00:00

pages

229-34

issue

4

eissn

1947-5535

issn

1947-5543

journal_volume

11

pub_type

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