Traffic-related ultrafine particles influence gene regulation in olfactory mucosa cells altering PI3K/AKT signaling

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378041%3A_____%2F25%3A00619631" target="_blank" >RIV/68378041:_____/25:00619631 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0160412025002351?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0160412025002351?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.envint.2025.109484" target="_blank" >10.1016/j.envint.2025.109484</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Traffic-related ultrafine particles influence gene regulation in olfactory mucosa cells altering PI3K/AKT signaling

Popis výsledku v původním jazyce

Traffic-related ultrafine particles (UFPs) are an emerging health concern affecting the brain and increasing the risk of Alzheimer's disease (AD). PI3K/AKT signaling is known to contribute to neuronal survival and to be altered in AD. The nasal olfactory mucosa (OM) is a sensory tissue exposed directly to ambient air, and a starting point for olfactory neural circuits towards the brain. Evidence of air pollution-induced transcriptional regulation via microRNAs (miRNA) and DNA methylation (DNAmet) is accumulating and air pollutant-mediated disturbances in PI3K/AKT signaling have been reported. By utilizing a highly translational human-based in vitro model of OM, we aimed to investigate possible gene regulatory mechanisms in PI3K/AKT signaling induced by UFPs, and to compare the responses between cognitively healthy and individuals with AD. miRNA expression was analyzed using next-generation sequencing (NGS) and chip-based methylation analysis was performed to detect differentially methylated loci (DML). These data were combined with previously published transcriptomics analysis (mRNA) to construct an mRNA-miRNA-DNAmet-integrative network. Protein level changes were studied by immunoassays. We observed UFP-induced reductions in viability and increases in oxidative stress and DNA damage without eminent cell death. Integrative network analysis revealed multiple connections of miRNAs to differentially expressed genes in the PI3K/AKT pathway, and effects were most prominent in AD cells. Similarly, in AD cells DML were identified in transcription factor and apoptosis genes, downstream of PI3K/AKT signaling. Conclusively, traffic-related UFPs influence gene regulation of PI3K/AKT signaling to modulate OM cell survival, with existing AD pathology resulting in heightened vulnerability to UFP effects.

Název v anglickém jazyce

Traffic-related ultrafine particles influence gene regulation in olfactory mucosa cells altering PI3K/AKT signaling

Popis výsledku anglicky

Traffic-related ultrafine particles (UFPs) are an emerging health concern affecting the brain and increasing the risk of Alzheimer's disease (AD). PI3K/AKT signaling is known to contribute to neuronal survival and to be altered in AD. The nasal olfactory mucosa (OM) is a sensory tissue exposed directly to ambient air, and a starting point for olfactory neural circuits towards the brain. Evidence of air pollution-induced transcriptional regulation via microRNAs (miRNA) and DNA methylation (DNAmet) is accumulating and air pollutant-mediated disturbances in PI3K/AKT signaling have been reported. By utilizing a highly translational human-based in vitro model of OM, we aimed to investigate possible gene regulatory mechanisms in PI3K/AKT signaling induced by UFPs, and to compare the responses between cognitively healthy and individuals with AD. miRNA expression was analyzed using next-generation sequencing (NGS) and chip-based methylation analysis was performed to detect differentially methylated loci (DML). These data were combined with previously published transcriptomics analysis (mRNA) to construct an mRNA-miRNA-DNAmet-integrative network. Protein level changes were studied by immunoassays. We observed UFP-induced reductions in viability and increases in oxidative stress and DNA damage without eminent cell death. Integrative network analysis revealed multiple connections of miRNAs to differentially expressed genes in the PI3K/AKT pathway, and effects were most prominent in AD cells. Similarly, in AD cells DML were identified in transcription factor and apoptosis genes, downstream of PI3K/AKT signaling. Conclusively, traffic-related UFPs influence gene regulation of PI3K/AKT signaling to modulate OM cell survival, with existing AD pathology resulting in heightened vulnerability to UFP effects.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

30304 - Public and environmental health

Projekt

<a href="/cs/project/LM2023066" target="_blank" >LM2023066: Nanomateriály a nanotechnologie pro ochranu životního prostředí a udržitelnou budoucnost</a><br>

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

Environment International

ISSN

0160-4120

e-ISSN

1873-6750

Svazek periodika

199

Číslo periodika v rámci svazku

May

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

15

Strana od-do

109484

Kód UT WoS článku

001479532500001

EID výsledku v databázi Scopus

2-s2.0-105003211254