loading page

The abortive SARS-CoV-2 infection of osteoclast precursors promotes their differentiation into osteoclasts
  • +6
  • Jorge Quarleri,
  • Franco SVIERCZ,
  • Patricio JARMOLUK,
  • Joshua GODOY COTO,
  • Cintia CEVALLOS,
  • Rosa Nicole FREIBERGER,
  • Cyntia Alicia Marcela LÓPEZ,
  • Irene Lucia ENNIS,
  • M. Victoria Delpino
Jorge Quarleri
Universidad de Buenos Aires

Corresponding Author:[email protected]

Author Profile
Franco SVIERCZ
Universidad de Buenos Aires
Author Profile
Patricio JARMOLUK
Universidad de Buenos Aires
Author Profile
Joshua GODOY COTO
Universidad Nacional de la Plata
Author Profile
Cintia CEVALLOS
Universidad de Buenos Aires
Author Profile
Rosa Nicole FREIBERGER
Universidad de Buenos Aires
Author Profile
Cyntia Alicia Marcela LÓPEZ
Universidad de Buenos Aires
Author Profile
Irene Lucia ENNIS
Universidad Nacional de la Plata
Author Profile
M. Victoria Delpino
Universidad de Buenos Aires
Author Profile

Abstract

The COVID-19 pandemic has resulted in the loss of millions of lives, although a majority of those infected have managed to survive. Consequently, a set of outcomes, identified as long COVID, is now emerging. While the primary target of SARS-CoV-2 is the respiratory system, the impact of COVID-19 extends to various body parts, including the bone. This study aims to investigate the effects of acute SARS-CoV-2 infection on osteoclastogenesis, utilizing both ancestral and Omicron viral strains. Monocyte-derived macrophages (MDM), which serve as precursors to osteoclasts, were exposed to both viral variants. However, the infection proved abortive, even though ACE2 receptor expression increased post-infection, with no significant impact on cellular viability and redox balance. Both SARS-CoV-2 strains heightened osteoclast formation in a dose-dependent manner, as well as CD51/61 expression and bone resorptive ability. Notably, SARS-CoV-2 induced early pro-inflammatory M1 macrophage polarization, shifting towards an M2-like profile. Osteoclastogenesis-related genes (RANK, NFATc1, DC-STAMP, MMP9) were upregulated, and surprisingly, SARS-CoV-2 variants promoted RANKL-independent osteoclast formation. This thorough investigation illuminates the intricate interplay between SARS-CoV-2 and osteoclast precursors, suggesting potential implications for bone homeostasis and opening new avenues for therapeutic exploration in COVID-19.
Submitted to Journal of Medical Virology
27 Jan 2024Reviewer(s) Assigned
28 Feb 2024Review(s) Completed, Editorial Evaluation Pending
28 Feb 2024Editorial Decision: Revise Major