Mucin 4 is a cellular biomarker of necrotizing bronchiolitis in influenza A virus infection.
Microbes Infect
; 25(7): 105169, 2023.
Article
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| MEDLINE
| ID: mdl-37295769
ABSTRACT
Influenza A virus (IAV) in the human and swine host infects epithelial cells lining the respiratory tract causing a necrotizing bronchitis and bronchiolitis. These epithelial surfaces are protected by large glycoproteins called mucins. Mucin 4 (MUC4) is a transmembrane mucin that consists of an alpha subunit responsible for surface protection and intracellular beta subunit involved in signal transduction which repress apoptosis and stimulate epithelial proliferation. This study was designed to determine the expression and potential role of MUC4 during IAV infection. We used immunohistochemistry in combination with machine learning image analysis to quantify differential protein expression of MUC4 subunits in IAV-infected and uninfected lung in a porcine model. MUC4 protein basal expression in control animals varied significantly by litter. MUC4 protein expression was significantly increased in bronchioles with necrotizing bronchiolitis compared to histologically normal bronchioles, likely representing a regenerative response to restore mucosal integrity of conducting airways. Understanding the impact of differential MUC4 expression among healthy individuals and during IAV infection will facilitate control strategies by elucidating mechanisms associated with susceptibility to IAV that can be therapeutically or genetically regulated and may be extended to other respiratory diseases.
Palabras clave
Texto completo:
1
Bases de datos:
MEDLINE
Asunto principal:
Virus de la Influenza A
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Bronquiolitis
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Gripe Humana
Límite:
Animals
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Humans
Idioma:
En
Revista:
Microbes Infect
Asunto de la revista:
ALERGIA E IMUNOLOGIA
/
MICROBIOLOGIA
Año:
2023
Tipo del documento:
Article