J 2023

Extracellular vesicles of the probiotic bacteria E. coli O83 activate innate immunity and prevent allergy in mice

SCHMID, Anna Marlene; Agnieszka RAZIM; Magdalena WYSMOLEK; Daniela KEREKES; Melissa HAUNSTETTER et al.

Základní údaje

Originální název

Extracellular vesicles of the probiotic bacteria E. coli O83 activate innate immunity and prevent allergy in mice

Autoři

SCHMID, Anna Marlene; Agnieszka RAZIM; Magdalena WYSMOLEK; Daniela KEREKES; Melissa HAUNSTETTER; Paul KOHL; Georgii BRAZHNIKOV; Nora GEISSLER; Michael THALER; Eliška KRČMÁŘOVÁ; Martin ŠINDELÁŘ; Tamara WEINMAYER; Jiří HRDÝ; Katy SCHMIDT; Peter NEJSUM; Bradley WHITEHEAD; Johan PALMFELDT; Stefan SCHILD; Aleksandra INIC-KANADA; Ursula WIEDERMANN a Irma SCHABUSSOVA

Vydání

Cell Communication and Signaling, BMC, 2023, 1478-811X

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

30102 Immunology

Stát vydavatele

Velká Británie a Severní Irsko

Utajení

není předmětem státního či obchodního tajemství

Odkazy

Impakt faktor

Impact factor: 8.200

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14310/23:00133086

Organizační jednotka

Přírodovědecká fakulta

EID Scopus

Klíčová slova anglicky

Allergic airway inflammation; Extracellular vesicles; Outer membrane vesicles; Microbiota and innate immunity; Nasal route of administration

Štítky

Příznaky

Mezinárodní význam, Recenzováno
Změněno: 18. 1. 2024 14:28, Mgr. Marie Novosadová Šípková, DiS.

Anotace

V originále

Background E. coli O83 (Colinfant Newborn) is a Gram-negative (G-) probiotic bacterium used in the clinic. When administered orally, it reduces allergic sensitisation but not allergic asthma. Intranasal administration offers a non-invasive and convenient delivery method. This route bypasses the gastrointestinal tract and provides direct access to the airways, which are the target of asthma prevention. G- bacteria such as E. coli O83 release outer membrane vesicles (OMVs) to communicate with the environment. Here we investigate whether intranasally administered E. coli O83 OMVs (EcO83-OMVs) can reduce allergic airway inflammation in mice. Methods EcO83-OMVs were isolated by ultracentrifugation and characterised their number, morphology (shape and size), composition (proteins and lipopolysaccharide; LPS), recognition by innate receptors (using transfected HEK293 cells) and immunomodulatory potential (in naive splenocytes and bone marrow-derived dendritic cells; BMDCs). Their allergy-preventive effect was investigated in a mouse model of ovalbumin-induced allergic airway inflammation. Results EcO83-OMVs are spherical nanoparticles with a size of about 110 nm. They contain LPS and protein cargo. We identified a total of 1120 proteins, 136 of which were enriched in OMVs compared to parent bacteria. Proteins from the flagellum dominated. OMVs activated the pattern recognition receptors TLR2/4/5 as well as NOD1 and NOD2. EcO83-OMVs induced the production of pro- and anti-inflammatory cytokines in splenocytes and BMDCs. Intranasal administration of EcO83-OMVs inhibited airway hyperresponsiveness, and decreased airway eosinophilia, Th2 cytokine production and mucus secretion. Conclusions We demonstrate for the first time that intranasally administered OMVs from probiotic G- bacteria have an anti-allergic effect. Our study highlights the advantages of OMVs as a safe platform for the prophylactic treatment of allergy.