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Inflammasome Activation in Bovine Peripheral Blood-Derived Macrophages Is Associated with Actin Rearrangement. | LitMetric

AI Article Synopsis

  • Inflammation is essential for fighting infections, activating the immune system through its inflammasome components to detect and respond to harmful microorganisms.
  • This study focused on how bovine macrophages' inflammasome is activated by a specific protein called flagellin, and how it interacts with the actin cytoskeleton.
  • Results indicated that flagellin triggers changes in actin structure at different stages of inflammasome activation, ultimately playing a crucial role in immune response during programmed cell death.

Article Abstract

Inflammation is critical for infection control and acts as an arsenal defense mechanism against invading microbes through activation of the host immune system. It works via its inflammasome components to sense the dangerous invading microorganism and send messages to the immune system to destroy them. To date, the function of bovine macrophage inflammasome and its relationship with actin has not been identified. This study aimed to investigate the activation of bovine inflammasome by phase one flagellin from and its interaction with actin. Bovine monocyte-derived macrophages were prepared and challenged with SL1344 phase one flagellin. The results demonstrated the relationship between the flagellin-based activation of inflammasome and actin rearrangement. The flagellin-based activation of inflammasome promoted the activation and co-localization of F-actin and the inflammasome complex. Actin was remodeled to different degrees according to the stage of inflammasome activation. The actin redistribution varied from polymerization to filopodia, while at the stage of pyroptotic cell death, actin was broken down and interacted with activated inflammasome complexes. In conclusion, flagellin-dependent inflammasome activation and actin localization to the inflammasome at the stage of pyroptotic cell death may be of importance for appropriate immune responses, pending further studies to explore the exact cross-linking between the inflammasome complex and actin.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7223366PMC
http://dx.doi.org/10.3390/ani10040655DOI Listing

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