Journal: Revista da Associação Médica Brasileira

Article Title: Enoxaparin preserves cellular morphology and modulates mitophagy-associated Parkin–LC3 in acute ischemic rat myocardium

doi: 10.1590/1806-9282.20251136

Figure Lengend Snippet: Histological sections of Parkin and LC3 staining. a1—sham group, 40×, b1—control group, 40×, and c1—treatment group, 40×. Parkin staining: a2—sham group, 40×, b2—control group, 40×, and c2 treatment group—40×, LC3 staining. Parkin- and LC3-positive cells marked with black arrow.

Article Snippet: Nonspecific binding was prevented by incubation with a normal serum-blocking solution for 30 min. Next, sections were incubated overnight in a humidified chamber (30–60% humidity) with primary antibodies against LC3 (BiossUSA, LC3 Polyclonal Antibody, Cat. No: BS-4843R) and Parkin (BiossUSA, Parkin Polyclonal Antibody, Cat. No: BS-1865R).

Techniques: Staining, Control

Journal: Frontiers in Molecular Neuroscience

Article Title: Amyloid β1-42 (Aβ1-42) Induces the CDK2-Mediated Phosphorylation of Tau through the Activation of the mTORC1 Signaling Pathway While Promoting Neuronal Cell Death

doi: 10.3389/fnmol.2017.00229

Figure Lengend Snippet: Aβ facilitates HIF1α synthesis and autophagy inhibition via mTOR activation. (A) SK-N-MC cells were exposed to Aβ (5 μM) for 0–48 h. HIF1α and β-actin expression was analyzed by western blot. n = 3. (B) Cells were pretreated with NAC (1 mM) for 30 min prior to Aβ treatment for 24 h. HIF1α and β-actin expression were analyzed by western blot. n = 3. (C,E) Cells were incubated with rapamycin (10 nM) for 30 min prior to Aβ treatment for 24 h. Phosphorylation of 4EBP1 (Thr 37/46) and 4EBP1, phosphorylation of p70S6K1 (Thr 389), HIF1α and β-actin were analyzed by western blot. n = 6. (D) Protein samples were immunoprecipitated by eukaryotic translation initiation factor 4E (eIF4E) antibody-conjugated protein A/G agarose beads. Samples were blotted with 4EBP1 and eIF4E-specific antibodies. n = 3. (F) Cells were exposed to PF4708671 (10 μM) for 30 min prior to Aβ treatment for 24 h. HIF1α and β-actin expression was detected by western blot. n = 6. (G) Cells were exposed to cycloheximide (4 μM) for 30 min prior to Aβ treatment for 24 h. HIF1α and β-actin expressions were detected by western blot. n = 6. (H) Cells were pretreated with rapamycin (10 nM) for 30 min, incubated with Aβ for 24 h and analyzed by western blotting with LC3, p62 and β-actin specific antibodies. n = 3–6. (I) LC3 puncta was visualized by confocal microscopy. Presented results are merged images. Green and red fluorescents indicate LC3 and PI respectively. Scale bars, 50 μm (magnification × 600). (J) Cells were pretreated with trehalose (10 μM) for 30 min prior to Aβ treatment for 24 h. Cytotoxicity was measured by MTT assay at an absorbance of 545 nm using a microplate reader. Data present the mean ± SE. n = 6. (K) Cell viability was measured by trypan blue exclusion assay. Data are presented as a mean ± SE. n = 6. Each blot image was presented as representative image. * p < 0.05 vs. control, # p < 0.05 vs. Aβ treatment.

Article Snippet: The antibodies of hypoxia inducible factor (HIF1α; NB100-105), p70S6K1 (NB600-1049), LC3 (NB100-2220) and p62 (NBP1-48320) were obtained from Novus Biologicals (Littleton, CO, USA) and the HRP-conjugated goat anti-rabbit IgG was purchased from Santa Cruz Biotechnology.

Techniques: Inhibition, Activation Assay, Expressing, Western Blot, Incubation, Phospho-proteomics, Immunoprecipitation, Confocal Microscopy, MTT Assay, Trypan Blue Exclusion Assay, Control

Journal: Cell Reports Medicine

Article Title: Truncating NFKB1 variants cause combined NLRP3 inflammasome activation and type I interferon signaling and predispose to necrotizing fasciitis

doi: 10.1016/j.xcrm.2024.101503

Figure Lengend Snippet: Truncating variants of NFKB1 impair autophagy (A) MitoSOX staining of untreated NFKB1 R157∗/R157∗ and WT THP-1 monocytes was analyzed by flow cytometry. Quantifications and representative plots are shown. (B) HMDMs (left) or NFKB1 R157∗/R157∗ and WT THP-1 monocytes (right) were activated with LPS, and MitoTempo was applied 1 h before ATP. Secreted mature IL-1β was detected by ELISA. (C) ρ 0 or conventional NFKB1 R157∗/R157∗ and WT THP-1 monocytes were activated with LPS and secreted mature IL-1β was detected by ELISA. (D) HMDMs (left) or NFKB1 R157∗/R157∗ and WT THP-1 monocytes (right) were activated with LPS for indicated times and SQSTM1 was blotted from lysates. Quantifications, representative blots, and TPL are shown. (E) NFKB1 R157∗/R157∗ and WT THP-1 monocytes were inhibited with E-64d and pepstatin A (abbreviated as EP) 1 h prior to LPS (for indicated times). LC3 was blotted from cell lysates. Quantifications, representative blot, and TPL are shown. (F and G) NFKB1 R157∗/R157∗ and WT THP-1 monocytes were treated with LPS and (F) 3-MA (6 h 45 min) or (G) rapamycin (17 h 45 min) and ATP (for the last 45 min). Secreted mature IL-1β was detected by ELISA and is expressed as fold change relative to the respective cells stimulated with LPS and ATP. (H) NFKB1 R157∗/R157∗ and WT THP-1 monocytes were activated with LPS (18 h). Cells staining positive for Hoechst (nuclear stain) and autophagic vesicle marker were analyzed by flow cytometry. Quantitation and representative plots are shown. (I) Schematic representation of the effects of truncating NFKB1 mutations on macroautophagy and NLRP3 inflammasome activation. Wilcoxon test (A), one-way RM-ANOVA (B), or two-way ANOVA (C–H) followed by Dunnett’s (B), Šidak’s (D–G), or Tukey’s test (C and H). The data are shown as mean ± SD. ∗p < 0.05, ∗∗p < 0.01, ∗∗∗p < 0.001, ∗∗∗∗p < 0.0001. (A) n = 8; (B) HMDMs: 1 control, 3 variant carriers, THP-1 n = 4; (C–E) THP-1 n = 4; (D) HMDMs: 2 controls, 4 variant carriers; (F–H) THP-1 n = 4. See also Figure S4 .

Article Snippet: For staining with LC3 antibody (Novus Biologicals NB100-2331) THP-1 monocytes were centrifuged and lyzed in sucrose lysis buffer (250 mM Sucrose, 1 mM EDTA, and 1x protease inhibitor).

Techniques: Staining, Flow Cytometry, Enzyme-linked Immunosorbent Assay, Marker, Quantitation Assay, Activation Assay, Control, Variant Assay

Journal: Cell Reports Medicine

Article Title: Truncating NFKB1 variants cause combined NLRP3 inflammasome activation and type I interferon signaling and predispose to necrotizing fasciitis

doi: 10.1016/j.xcrm.2024.101503

Figure Lengend Snippet:

Article Snippet: For staining with LC3 antibody (Novus Biologicals NB100-2331) THP-1 monocytes were centrifuged and lyzed in sucrose lysis buffer (250 mM Sucrose, 1 mM EDTA, and 1x protease inhibitor).

Techniques: Control, Recombinant, Lysis, Protease Inhibitor, Western Blot, Cell Culture, Molecular Weight, Staining, Sequencing, Modification, SYBR Green Assay, Enzyme-linked Immunosorbent Assay, Transfection, Quantitation Assay, Mutagenesis, Software, CRISPR, Variant Assay, Cytometry