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Pappis, L.

Publications and source records attributed to Pappis, L..

2 recordsLinked to original sources

iPSC-Derived Cerebral Organoids Reveal Mitochondrial, Inflammatory and Neuronal Vulnerabilities in Bipolar Disorder

Bipolar disorder (BD) is increasingly recognized as a disorder with both mitochondrial dysfunction and heightened inflammatory reactivity, yet their contribution to neuronal activity remains unclear. To address these gaps, this study utilizes iPSC-derived cerebral organoids (COs) from BD patients and healthy controls to model disease-specific metabolic and inflammatory dysfunction in a physiologically relevant system. BD COs exhibited mitochondrial impairment, dysregulated metabolic function, and increased nod-leucine rich repeat and pyrin domain containing protein 3 (NLRP3) inflammasome activation sensitivity. Treatment with MCC950, a selective NLRP3 inhibitor, effectively rescued mitochondrial function and reduced inflammatory activation in both BD and control COs. Additionally, a Bioactive Flavonoid Extract (BFE) was explored as a potential therapeutic, demonstrating partial rescue of inflammasome activation. These findings highlight a mitochondria-inflammasome axis in BD pathophysiology and establish a novel platform for studying BD-associated cellular mechanisms, ultimately bridging the gap between molecular dysfunction and therapeutic development.

neuroscience↗

Bioactive Flavonoid Extract Suppresses NLRP3 Activation and Inflammation in 2D and 3D Lung Models

Inflammasome activation plays a critical role in lung inflammation, with the NLRP3 (NOD-, LRR-and pyrin domain-containing protein 3) inflammasome serving as a key mediator of inflammatory cytokine release and pyroptotic cell death. This study investigates the effects of a bioactive flavonoid extract (BFE), as a potential modulator of NLRP3-mediated inflammation using THP-1 derived macrophages, A549 lung cells (2D cells), and lung organoids (3D cells). Cells were primed with lipopolysaccharide (LPS), treated with BFE, and then activated with nigericin to induce NLRP3 activation and examine BFEs effects. Markers of inflammation, including presence of ASC specks (3D models), reactive oxygen species production (ROS) (2D models), caspase-1 activity (2D and 3D models), and IL-1{beta} release (2D and 3D models) were measured to assess the extent of inflammasome activation in several treatment conditions. By integrating 2D and 3D lung models, this work provides insight into the NLRP3 inflammasome axis in lung inflammation and explores BFE as a potential therapeutic strategy for inflammasome-driven pulmonary inflammatory processes.

molecular biology↗