
mBio, Journal Year: 2024, Volume and Issue: 15(11)
Published: Sept. 30, 2024
ABSTRACT The primary challenge posed by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection is COVID-19-related mortality, often exacerbated additional medical complications, such as COVID-19-associated kidney injuries (CAKIs). Up to half of COVID-19 patients experience with those facing failure and injury having the worst overall prognosis. Despite significant impact CAKI on mortality its enduring effects in long COVID, underlying causes molecular mechanisms remain elusive. In this study, we identified a functional relationship between expression SARS-CoV-2 ORF3a protein inflammation-driven apoptotic death renal tubular epithelial cells CAKI. We demonstrate vitro that independently induces cell-specific cell death, evidenced elevation molecule-1 (KIM-1) activation NF-kB-mediated proinflammatory cytokine (TNFα IL-6) production. By examining tissues SARS-CoV-2-infected K18-ACE2 transgenic mice, observed similar correlation ORF3a-induced cytopathic changes injury. This was further validated through reconstitution via direct adenoviral injection into mouse kidneys. Through medicinal analysis, natural compound, glycyrrhizin (GL4419), which not only blocks viral replication cells, but also mitigates inhibiting high mobility group box 1 (HMGB1) protein, leading reduction KIM-1. Moreover, interacts HMGB1. Overproduction or downregulation hmgb1 results correlative cellular KIM-1 response respective production, implicating crucial role HMGB1 ORF3a-inflicted injuries. Our data suggest link injury, highlighting unique therapeutic target contributing IMPORTANCE major during pandemic has tragically claimed millions lives. morbidity are pre-existing conditions, chronic diseases (CKDs), development (AKI) due COVID-19, collectively known Patients who have poorest clinical outcomes, including increased mortality. these alarming findings, there critical gap our understanding study establishes induced linking initially studies AKI animal studies, either expressing alone context infection. elucidating mechanistic pathways, research deepens presents potential avenues address healthcare challenges faced individuals conditions.
Language: Английский