Journal: Frontiers in Pharmacology

Article Title: Thymelaea hirsuta (L.) Endl . extract attenuates NLRP3 inflammasome activation via modulation of ATPase activity

doi: 10.3389/fphar.2026.1781860

Figure Lengend Snippet: TMH inhibits activation of the NLRP3 inflammasome. (A) Schematic workflow of in vitro NLRP3 inflammasome activation. (B,C) Cell viability was assessed in J774A.1 cells (B) and PMA (500 nM)-differentiated THP-1 cells (C) treated with TMH for 2 or 18 h using the EZ-Cytox assay. (D) LPS-primed J774A.1 cells were treated with TMH for 2 h, then stimulated with ATP (5 mM) for 30 min in the presence or absence of MCC950. IL-1β (p17) levels in supernatants were measured by ELISA. (E,F) PMA-differentiated THP-1 cells were primed with LPS, treated with TMH for 2 h, then stimulated with ATP (5 mM) (E) or nigericin (10 μM) (F) for 1 h, with or without MCC950. IL-1β (p17) levels in supernatants were determined by ELISA. Data are presented as the mean ± SD (n = 3). Statistical analysis was performed using one-way ANOVA followed by Tukey’s multiple comparisons test. *P < 0.05, **P < 0.01, ***P < 0.001, ****P < 0.0001; n.s., not significant.

Article Snippet: THP-1 and J774A.1 cells were obtained from the Korean Cell Line Bank and used between passages 5 and 20.

Techniques: Activation Assay, In Vitro, Enzyme-linked Immunosorbent Assay

Journal: Frontiers in Pharmacology

Article Title: Thymelaea hirsuta (L.) Endl . extract attenuates NLRP3 inflammasome activation via modulation of ATPase activity

doi: 10.3389/fphar.2026.1781860

Figure Lengend Snippet: TMH does not affect other inflammasome or inflammatory pathways. (A,B) LPS-primed J774A.1 cells were treated with TMH for 2 h, followed by stimulation with either dsDNA (1 μg/mL) (A) or flagellin (B) transfected using Lipofectamine 2000 for 3 h. (C) Following TMH treatment (2 h), nuclear and cytosolic fractions of LPS-primed J774A.1 cells were separated and assessed for NF-κB p65 translocation by immunoblotting. (D) HEK293FT cells transfected with the pGL4.32 luciferase reporter vector were treated with TNF-α (20 ng/mL) for 5 h, with or without TMH pre-treatment (2 h). Luciferase activity was measured using the Bright-Glo™ luciferase assay system (Promega). Data are presented as the mean ± SD (n = 3). Statistical analysis was performed using one-way ANOVA followed by Tukey’s multiple comparisons test n.s., not significant.

Article Snippet: THP-1 and J774A.1 cells were obtained from the Korean Cell Line Bank and used between passages 5 and 20.

Techniques: Transfection, Translocation Assay, Western Blot, Luciferase, Plasmid Preparation, Activity Assay

Journal: Frontiers in Pharmacology

Article Title: Thymelaea hirsuta (L.) Endl . extract attenuates NLRP3 inflammasome activation via modulation of ATPase activity

doi: 10.3389/fphar.2026.1781860

Figure Lengend Snippet: TMH inhibits NLRP3 inflammasome activation by suppressing ASC oligomerization and ATPase activity. (A) LPS-primed J774A.1 cells were treated with TMH for 2 h, then stimulated with imiquimod (200 μM) for 1 h. (B) Cells were treated with TMH (2 h), stained with MitoSOX (5 μM, 10 min), and stimulated with ATP (5 mM, 5 min). Intracellular ROS were visualized by confocal microscopy. (C,D) PMA-differentiated THP-1 cells were primed with LPS, treated with TMH for 2 h, then stimulated with nigericin (10 μM, 1 h). ASC speck formation was examined by confocal microscopy (C) , and representative images from five fields are shown (D) . (E) Cells were stimulated with or without MCC950 and cross-linked with DSS (2.5 mM, 30 min) before immunoblotting for ASC oligomerization. (F) NLRP3 ATPase activity was measured using the ADP-Glo™ assay to quantify ATP-to-ADP conversion following TMH treatment. Data are presented as the mean ± SD (n = 3). Statistical analysis was performed using one-way ANOVA followed by Tukey’s multiple comparisons test. **P < 0.01, ***P < 0.001.

Article Snippet: THP-1 and J774A.1 cells were obtained from the Korean Cell Line Bank and used between passages 5 and 20.

Techniques: Activation Assay, Activity Assay, Staining, Confocal Microscopy, Western Blot, Glo Assay