Limited response of primary nasal epithelial cells to Bordetella pertussis infection

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388971%3A_____%2F25%3A00638800" target="_blank" >RIV/61388971:_____/25:00638800 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60461373:22330/25:43932080

Výsledek na webu

<a href="https://journals.asm.org/doi/10.1128/spectrum.01267-25" target="_blank" >https://journals.asm.org/doi/10.1128/spectrum.01267-25</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1128/spectrum.01267-25" target="_blank" >10.1128/spectrum.01267-25</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Limited response of primary nasal epithelial cells to Bordetella pertussis infection

Popis výsledku v původním jazyce

Bordetella pertussis is a Gram-negative coccobacillus that causes whooping cough or pertussis, a respiratory disease that has recently experienced a resurgence. Upon entering the respiratory tract, B. pertussis colonizes the airway epithelium and attaches to ciliated cells. Here, we used primary human nasal epithelial cells (hNECs) cultured at the air-liquid interface and investigated their interaction with B. pertussis B1917, focusing on the role of the type III secretion system effector protein BteA. In this model, which resembles the epithelial cells of nasal epithelium in vivo, B. pertussis B1917 localized predominantly in the overlying mucus and scarcely colonized the cell cilia. The colonization led to a gradual decline in epithelial barrier function, as shown by measurements of transepithelial electrical resistance (TEER) and staining of the tight junction protein zonula occludens 1. The decrease in TEER occurred independently of the cytotoxic effector protein BteA. Transcriptomic and proteomic analyses of hNECs showed only moderate changes following infection, primarily characterized by increased mucus production, including upregulation of mucin MUC5AC. No profound response to BteA was detected. Furthermore, the infection did not induce production of inflammatory cytokines, suggesting that B. pertussis B1917 evades recognition by hNECs in this model system. These results suggest that the mucus may serve as a niche that allows B. pertussis B1917 to minimize epithelial recognition and damage. The lack of a robust immune response further indicates that additional components of the nasal mucosa, such as innate immune cells, are likely required to initiate an effective host defense.IMPORTANCEThe nasal epithelium is the initial site where Bordetella pertussis comes into contact with the host during respiratory tract infection. In this study, human nasal epithelial cells cultured at the air-liquid interface were established as an in vitro model to investigate the early stages of B. pertussis infection. We showed that the clinical isolate B. pertussis B1917 resides in the mucus during the early stages of colonization without disrupting the epithelial barrier function. Infection results in moderate transcriptomic and proteomic changes, characterized by increased mucus production and minimal inflammatory signaling. These results suggest that B. pertussis B1917 may evade early host recognition by residing in mucus and avoiding direct interaction with epithelial cells. They also highlight the importance of other components of the mucosal immune system, such as resident immune cells, for the initiation of an effective defense.

Název v anglickém jazyce

Limited response of primary nasal epithelial cells to Bordetella pertussis infection

Popis výsledku anglicky

Bordetella pertussis is a Gram-negative coccobacillus that causes whooping cough or pertussis, a respiratory disease that has recently experienced a resurgence. Upon entering the respiratory tract, B. pertussis colonizes the airway epithelium and attaches to ciliated cells. Here, we used primary human nasal epithelial cells (hNECs) cultured at the air-liquid interface and investigated their interaction with B. pertussis B1917, focusing on the role of the type III secretion system effector protein BteA. In this model, which resembles the epithelial cells of nasal epithelium in vivo, B. pertussis B1917 localized predominantly in the overlying mucus and scarcely colonized the cell cilia. The colonization led to a gradual decline in epithelial barrier function, as shown by measurements of transepithelial electrical resistance (TEER) and staining of the tight junction protein zonula occludens 1. The decrease in TEER occurred independently of the cytotoxic effector protein BteA. Transcriptomic and proteomic analyses of hNECs showed only moderate changes following infection, primarily characterized by increased mucus production, including upregulation of mucin MUC5AC. No profound response to BteA was detected. Furthermore, the infection did not induce production of inflammatory cytokines, suggesting that B. pertussis B1917 evades recognition by hNECs in this model system. These results suggest that the mucus may serve as a niche that allows B. pertussis B1917 to minimize epithelial recognition and damage. The lack of a robust immune response further indicates that additional components of the nasal mucosa, such as innate immune cells, are likely required to initiate an effective host defense.IMPORTANCEThe nasal epithelium is the initial site where Bordetella pertussis comes into contact with the host during respiratory tract infection. In this study, human nasal epithelial cells cultured at the air-liquid interface were established as an in vitro model to investigate the early stages of B. pertussis infection. We showed that the clinical isolate B. pertussis B1917 resides in the mucus during the early stages of colonization without disrupting the epithelial barrier function. Infection results in moderate transcriptomic and proteomic changes, characterized by increased mucus production and minimal inflammatory signaling. These results suggest that B. pertussis B1917 may evade early host recognition by residing in mucus and avoiding direct interaction with epithelial cells. They also highlight the importance of other components of the mucosal immune system, such as resident immune cells, for the initiation of an effective defense.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10606 - Microbiology

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Microbiology Spectrum

ISSN

2165-0497

e-ISSN

2165-0497

Svazek periodika

13

Číslo periodika v rámci svazku

9

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

24

Strana od-do

10.1128/spectrum.01267-25

Kód UT WoS článku

001543029400001

EID výsledku v databázi Scopus

2-s2.0-105015067895