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Biomed Environ Sci. 2019 May;32(5):324-333. doi: 10.3967/bes2019.044.

Inactivation of Poliovirus by Ozone and the Impact of Ozone on the Viral Genome.

Author information

1
Department of Environment and Health, Tianjin Institute of Environmental & Operational Medicine, Key Laboratory of Risk Assessment and Control for Environment & Food Safety, Tianjin 300050, China.

Abstract

OBJECTIVE:

To investigate the mechanisms underlying ozone-induced inactivation of poliovirus type 1 (PV1).

METHODS:

We used cell culture, long-overlapping RT-PCR, and spot hybridization assays to verify and accurately locate the sites of action of ozone that cause PV1 inactivation. We also employed recombinant viral genome RNA infection models to confirm our observations.

RESULTS:

Our results indicated that ozone inactivated PV1 primarily by disrupting the 5'-non-coding region (5'-NCR) of the PV1 genome. Further study revealed that ozone specifically damaged the 80-124 nucleotide (nt) region in the 5'-NCR. Recombinant viral genome RNA infection models confirmed that PV1 lacking this region was non-infectious.

CONCLUSION:

In this study, we not only elucidated the mechanisms by which ozone induces PV1 inactivation but also determined that the 80-124 nt region in the 5'-NCR is targeted by ozone to achieve this inactivation.

KEYWORDS:

Disinfection; Ozone; Poliomyelitis; Poliovirus

PMID:
31217049
DOI:
10.3967/bes2019.044
[Indexed for MEDLINE]
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