About: Quick assessment of influenza a virus infectivity with a long-range reverse-transcription quantitative polymerase chain reaction assay

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About: Quick assessment of influenza a virus infectivity with a long-range reverse-transcription quantitative polymerase chain reaction assay Goto Sponge NotDistinct Permalink

An Entity of Type : schema:ScholarlyArticle, within Data Space : wasabi.inria.fr associated with source document(s)

Attributes	Values
type	Academic Article research paper schema:ScholarlyArticle
isDefinedBy	Covid-on-the-Web dataset
has title	Quick assessment of influenza a virus infectivity with a long-range reverse-transcription quantitative polymerase chain reaction assay
Creator	Ashiba, Hiroki Fujimaki, Makoto Fukuda, Takashi Nakaya, Yuki Yasuura, Masato
Source	PMC
abstract	BACKGROUND: The polymerase chain reaction (PCR) is commonly used to detect viral pathogens because of its high sensitivity and specificity. However, conventional PCR methods cannot determine virus infectivity. Virus infectivity is conventionally examined with methods such as the plaque assay, even though such assays require several days. Long-range reverse-transcription quantitative PCR (RT-qPCR) has previously been suggested for the rapid assessment of RNA virus infectivity where the loss of infectivity is attributable to genomic fragmentation. METHODS: IAV was irradiated with 253.7 nm ultraviolet (UV) rays to induce genomic strand breaks that were confirmed by a full-length RT-PCR assay. The IAV was then subjected to plaque assay, conventional RT-qPCR and long-range RT-qPCR to examine the relationship between infectious titer and copy number. A simple linear regression analysis was performed to examine the correlation between the results of these assays. RESULTS: A long-range RT-qPCR assay was developed and validated for influenza A virus (IAV). Although only a few minutes of UV irradiation was required to completely inactivate IAV, genomic RNA remained detectable by the conventional RT-qPCR and the full-length RT-PCR for NS of viral genome following inactivation. A long-range RT-qPCR assay was then designed using RT-priming at the 3′ termini of each genomic segment and subsequent qPCR of the 5′ regions. UV-mediated IAV inactivation was successfully analyzed by the long-range RT-qPCR assay especially when targeting PA of the viral genome. This was also supported by the regression analysis that the long-range RT-qPCR is highly correlated with plaque assay (Adjusted R(2) = 0.931, P = 0.000066). CONCLUSIONS: This study suggests that IAV infectivity can be predicted without the infectivity assays. The rapid detection of pathogenic IAV has, therefore, been achieved with this sensing technology.
has issue date	2020-08-06(xsd:dateTime)
bibo:doi	10.1186/s12879-020-05317-8
has license	cc-by
sha1sum (hex)	2805ee2e2d59a668d91e28ddfd0730b0c51a705c
schema:url	https://doi.org/10.1186/s12879-020-05317-8
resource representing a document's title	Quick assessment of influenza a virus infectivity with a long-range reverse-transcription quantitative polymerase chain reaction assay
has PubMed Central identifier	PMC7407439
schema:publication	BMC Infect Dis
resource representing a document's body	covid:2805ee2e2d59a668d91e28ddfd0730b0c51a705c#body_text
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