Publication: Expression of importin-α isoforms in human nasal mucosa: implication for adaptation of avian influenza A viruses to human host
Issued Date
2016
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eng
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Mahidol University
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BioMed Central
Bibliographic Citation
Virology Journal. Vol. 13, (2016), 90
Suggested Citation
Khwansiri Ninpan, Ornpreya Suptawiwat, Chompunuch Boonarkart, Peerayuht Phuangphung, Sakda Sathirareuangchai, Mongkol Uiprasertkul, Prasert Auewarakul Expression of importin-α isoforms in human nasal mucosa: implication for adaptation of avian influenza A viruses to human host. Virology Journal. Vol. 13, (2016), 90. doi:10.1186/s12985-016-0546-y Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/2678
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Title
Expression of importin-α isoforms in human nasal mucosa: implication for adaptation of avian influenza A viruses to human host
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Abstract
Background: Transportation into the host cell nucleus is crucial for replication and transcription of influenza virus.
The classical nuclear import is regulated by specific cellular factor, importin-α. Seven isoforms of importin-α have
been identified in human. The preference of importin-α3 of avian influenza virus and -α7 isoform of human strains
during replication in human cells was previously identified. In addition, both avian and human influenza viruses
were shown to use importin-α1 isoform for their replication.
Finding: The mRNA levels of importin-α1, −α3, and –α7 isoforms in human respiratory tract was determined by
real-time RT-PCR. The results indicate that mRNA level of importin-α7 was significantly higher than that of importin-α1
(p-value < 0.0001) and importin-α3 (p-value < 0.0001) isoforms in human nasal mucosa while importin-α1 was detected
as the highest expression importin-α isoform in lung tissues.
Conclusions: These results may explain the preference of importin-α7 isoforms in seasonal influenza viruses in human
upper respiratory tract and may suggest a selective pressure toward importin-α7 in human respiratory tract infection of
an avian virus.