• FluTrackers.com Inc. does not provide medical advice. Information on this web site is collected from various internet resources, and the FluTrackers board of directors makes no warranty to the safety, efficacy, correctness or completeness of the information posted on this site by any author or poster. The information collated here is for instructional and/or discussion purposes only and is NOT intended to diagnose or treat any disease, illness, or other medical condition. Every individual reader or poster should seek advice from their personal physician/healthcare practitioner before considering or using any interventions that are discussed on this website. By continuing to access this website you agree to consult your personal physican before using any interventions posted on this website, and you agree to hold harmless FluTrackers.com Inc., the board of directors, the members, and all authors and posters for any effects from use of any medication, supplement, vitamin or other substance, device, intervention, etc. mentioned in posts on this website, or other internet venues referenced in posts on this website.
  • We are not asking for any donations. Do not donate to any entity who says they are raising funds for us.

JCI Insight . SARS-CoV-2 ORF8 drives osteoclastogenesis in preexisting immune-mediated inflammatory diseases

tetano

Editor, Senior Moderator
JCI Insight


. 2024 Dec 20;9(24):e178820.
doi: 10.1172/jci.insight.178820. SARS-CoV-2 ORF8 drives osteoclastogenesis in preexisting immune-mediated inflammatory diseases

Ivonne Melano[SUP] 1 [/SUP], Tamiris Azamor[SUP] 1 2 [/SUP], Camila Cs Caetano[SUP] 1 [/SUP], Nikki M Meyer[SUP] 1 [/SUP], Chineme Onwubueke[SUP] 1 3 [/SUP], Anabelle Visperas[SUP] 4 [/SUP], Débora Familiar-Macedo[SUP] 1 [/SUP], Gielenny M Salem[SUP] 1 [/SUP], Brandy-Lee Soos[SUP] 1 [/SUP], Cassandra M Calabrese[SUP] 5 [/SUP], Youn Jung Choi[SUP] 6 [/SUP], Shuyang Chen[SUP] 3 7 [/SUP], Younho Choi[SUP] 8 [/SUP], Xianfang Wu[SUP] 1 3 [/SUP], Zilton Vasconcelos[SUP] 2 [/SUP], Suzy Aa Comhair[SUP] 9 [/SUP], Karin Nielsen-Saines[SUP] 10 [/SUP], Leonard H Calabrese[SUP] 5 [/SUP], M Elaine Husni[SUP] 5 [/SUP], Jae U Jung[SUP] 1 3 [/SUP], Nicolas S Piuzzi[SUP] 4 [/SUP], Suan-Sin Foo[SUP] 1 3 [/SUP], Weiqiang Chen[SUP] 1 3 [/SUP]



Affiliations
Free article Abstract

Patients with immune-mediated inflammatory diseases (IMIDs) like rheumatoid arthritis (RA) are at higher risk for severe COVID-19 and long-term complications in bone health. Emerging clinical evidence demonstrated that SARS-CoV-2 infection reduces bone turnover and promotes bone loss, but the mechanism underlying worsened bone health remains elusive. This study sought to identify specific immune mediators that exacerbated preexisting IMIDs after SARS-CoV-2 exposure. Plasma samples from 4 groups were analyzed: healthy, IMID only, COVID-19 only, and COVID-19 + IMID. Using high-throughput multiplexed proteomics, we profiled 1,500 protein biomarkers and identified 148 unique biomarkers in COVID-19 patients with IMIDs, including elevated inflammatory cytokines (e.g., IL-17F) and bone resorption markers. Long-term circulating SARS-CoV-2 ORF8, a virulence factor for COVID-19, was detected in the COVID + IMID group. RA was one of the most common IMIDs in our study. ORF8 treatment of RA-derived human osteoblasts (RA-hOBs) increased levels of inflammatory (TNF, IL6, CCL2) and bone resorption (RANKL/osteoprotegerin ratio) markers compared with healthy controls. Supernatants from ORF8-treated RA-hOBs drove the differentiation of macrophages into osteoclast-like cells. These findings suggest that SARS-CoV-2 exposure can exacerbate IMIDs through ORF8-driven inflammation and osteoclastogenesis, highlighting potential therapeutic targets for managing COVID-19-induced bone pathologies.

Keywords: Autoimmune diseases; Bone disease; Inflammation; Rheumatology; Virology.

 
Back
Top Bottom