A Single Amino Acid Residue R144 of SNX16 Affects Its Ability to Inhibit the Replication of Influenza A Virus

Influenza A virus (IAV) is an important zoonotic pathogen, posing a severe burden for the health of both animals and humans. Many host factors are involved in the life cycle of IAV to regulate its replication. Herein, we identified sorting nexin-16 (SNX16) as a new host factor that negatively modula...

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Published inViruses Vol. 14; no. 4; p. 825
Main Authors Shi, Wenjun, Jiang, Li, Ye, Miaomiao, Wang, Bo, Chang, Yu, Shan, Zhibo, Wang, Xuyuan, Hu, Yuzhen, Chen, Hualan, Li, Chengjun
Format Journal Article
LanguageEnglish
Published Switzerland MDPI AG 15.04.2022
MDPI
Subjects
A549 Cells
Amino acids
Amino Acids - metabolism
Animals
Antibodies
Cloning
Drugs
Genomes
Host-Pathogen Interactions
Humans
Immunization
Infections
Influenza
Influenza A
influenza A virus
Influenza A virus - physiology
Influenza, Human - genetics
Infrared imaging systems
Life cycles
Membranes
Microscopy
Mutagenesis
Mutation
Nexin
Phenotypes
Plasmids
Proteins
R144 residue
Replication
SNX16
Tumorigenesis
Virus Replication - genetics
United States > US
replication
R144 residue
SNX16
influenza A virus
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Summary:Influenza A virus (IAV) is an important zoonotic pathogen, posing a severe burden for the health of both animals and humans. Many host factors are involved in the life cycle of IAV to regulate its replication. Herein, we identified sorting nexin-16 (SNX16) as a new host factor that negatively modulates the replication of IAV. When transiently overexpressed in cells, SNX16 appears to be expressed as two obvious bands. Mutagenesis analysis indicated that the amino acid residue R144 of SNX16 was responsible for its two-band expression phenotype. We found that the R144A mutation of SNX16 changed its cellular distribution in A549 cells and partially weakened the inhibitory effect of SNX16 on IAV replication. Further investigation revealed that SNX16 could negatively regulate the early stage of the replication cycle of IAV. Taken together, our results demonstrated that SNX16 is a novel restriction host factor for the replication of IAV by engaging in the early stage of IAV life cycle, and a single amino acid residue at position 144 plays an important role in the cellular distribution and anti-influenza function of SNX16.
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ISSN:1999-4915
1999-4915
DOI:10.3390/v14040825