SARS-CoV-2 envelope protein induces necroptosis and mediates inflammatory response in lung and colon cells through receptor interacting protein kinase 1

Abstract SARS-CoV-2 Envelope protein (E) is one of the crucial components in virus assembly and pathogenesis. The current study investigated its role in the SARS-CoV-2-mediated cell death and inflammation in lung and gastrointestinal epithelium and its effect on the gastrointestinal-lung axis. We observed that transfection of E protein increases the lysosomal pH and induces inflammation in the cell. The study utilizing Ethidium bromide/Acridine orange and Hoechst/Propidium iodide staining demonstrated necrotic cell death in E protein transfected cells. Our study revealed the role of the necroptotic marker RIPK1 in cell death. Additionally, inhibition of RIPK1 by its specific inhibitor Nec-1s exhibits recovery from cell death and inflammation manifested by reduced phosphorylation of NFκB. The E-transfected cells’ conditioned media induced inflammation with differential expression of inflammatory markers compared to direct transfection in the gastrointestinal-lung axis. In conclusion, SARS-CoV-2 E mediates inflammation and necroptosis through RIPK1, and the E-expressing cells’ secretion can modulate the gastrointestinal-lung axis. Based on the data of the present study, we believe that during severe COVID-19, necroptosis is an alternate mechanism of cell death besides ferroptosis, especially when the disease is not associated with drastic increase in serum ferritin..

Medienart:

E-Artikel

Erscheinungsjahr:

2023

Erschienen:

2023

Enthalten in:

Zur Gesamtaufnahme - volume:28

Enthalten in:

Apoptosis - 28(2023), 11-12 vom: 02. Sept., Seite 1596-1617

Sprache:

Englisch

Beteiligte Personen:

Baral, Budhadev [VerfasserIn]
Saini, Vaishali [VerfasserIn]
Tandon, Akrati [VerfasserIn]
Singh, Siddharth [VerfasserIn]
Rele, Samiksha [VerfasserIn]
Dixit, Amit Kumar [VerfasserIn]
Parmar, Hamendra Singh [VerfasserIn]
Meena, Ajay Kumar [VerfasserIn]
Jha, Hem Chandra [VerfasserIn]

Links:

Volltext [lizenzpflichtig]

Themen:

COVID-19
Inflammation
Necroptosis
SARS-CoV-2 E
Viroporin

Anmerkungen:

© The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.

doi:

10.1007/s10495-023-01883-9

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

SPR053585771