We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Vimentin regulates mitochondrial ROS production and inflammatory responses of neutrophils.
- Authors
Thao Ngoc Huynh; Toperzer, Jody; Scherer, Allison; Gumina, Anne; Brunetti, Tonya; Mansour, Michael K.; Markovitz, David M.; Russo, Brian C.
- Abstract
The intermediate filament vimentin is present in immune cells and is implicated in proinflammatory immune responses. Whether and how it supports antimicrobial activities of neutrophils are not well established. Here, we developed an immortalized neutrophil model to examine the requirement of vimentin. We demonstrate that vimentin restricts the production of proinflammatory cytokines and reactive oxygen species (ROS), but enhances phagocytosis and swarming. We observe that vimentin is dispensable for neutrophil extracellular trap (NET) formation, degranulation, and inflammasome activation. Moreover, gene expression analysis demonstrated that the presence of vimentin was associated with changes in expression of multiple genes required for mitochondrial function and ROS overproduction. Treatment of wild-type cells with rotenone, an inhibitor for complex I of the electron transport chain, increases the ROS levels. Likewise, treatment with mitoTEMPO, a SOD mimetic, rescues the ROS production in cells lacking vimentin. Together, these data show vimentin regulates neutrophil antimicrobial functions and alters ROS levels through regulation of mitochondrial activity.
- Subjects
CYTOPLASMIC filaments; REACTIVE oxygen species; ELECTRON transport; VIMENTIN; SWARMING (Zoology)
- Publication
Frontiers in Immunology, 2024, p1
- ISSN
1664-3224
- Publication type
Article
- DOI
10.3389/fimmu.2024.1416275