Changes in the Distribution of Type II Transmembrane Serine Protease, TMPRSS2 and in Paracellular Permeability in IPEC-J2 Cells Exposed to Oxidative Stress
Overview
Pathology
Authors
Affiliations
The effect of oxidative stress on barrier integrity and localization of transmembrane serine proteinase 2 (TMPRSS2) were studied using porcine epithelial IPEC-J2 cells on membrane inserts. Increased paracellular permeability of FITC-dextran 4 kDa (fluorescence intensity 43,508 ± 2,391 versus 3,550 ± 759) and that of gentamicin (3.41 ± 0.06 % increase to controls) were measured parallel with the reduced transepithelial electrical resistance (23.3 ± 4.06 % decrease) of cell layers 6 h after 1 h 1 mM H2O2 treatment. The immunohistochemical localization of adherens junctional β-catenin was not affected by reactive oxygen species (ROS) up to 4 mM H2O2. Peroxide-triggered enhanced paracellular permeability of IPEC-J2 cell layer was accompanied by predominantly cytoplasmic occurrence of TMPRSS2 embedded in cell membrane under physiological conditions. These results support that ROS can influence paracellular gate opening via multifaceted mode of action without involvement of β-catenin redistribution in adherens junction. Altered distribution pattern of TMPRSS2 and relocalized transmembrane serine protease activity may contribute to weakening of epithelial barrier integrity under acute oxidative stress.
Hamdy M, El Deeb A, Hagag N, Shahein M, Alaidi O, Hussein H Int J Vet Sci Med. 2023; 11(1):55-86.
PMID: 37441062 PMC: 10334861. DOI: 10.1080/23144599.2023.2222981.
How the Competition for Cysteine May Promote Infection of SARS-CoV-2 by Triggering Oxidative Stress.
Vernone A, Bergandi L, Pernice S, Pescarmona G, Silvagno F Antioxidants (Basel). 2023; 12(2).
PMID: 36830041 PMC: 9952211. DOI: 10.3390/antiox12020483.
The role of oxidative stress in the pathogenesis of infections with coronaviruses.
Gain C, Song S, Angtuaco T, Satta S, Kelesidis T Front Microbiol. 2023; 13:1111930.
PMID: 36713204 PMC: 9880066. DOI: 10.3389/fmicb.2022.1111930.
Assessing Intestinal Health. and Gut Barrier Models of Farm Animals: Benefits and Limitations.
Ghiselli F, Rossi B, Piva A, Grilli E Front Vet Sci. 2021; 8:723387.
PMID: 34888373 PMC: 8649998. DOI: 10.3389/fvets.2021.723387.
Molecular mechanism of interaction between SARS-CoV-2 and host cells and interventional therapy.
Zhang Q, Xiang R, Huo S, Zhou Y, Jiang S, Wang Q Signal Transduct Target Ther. 2021; 6(1):233.
PMID: 34117216 PMC: 8193598. DOI: 10.1038/s41392-021-00653-w.