Journal: Respiratory Research

Article Title: TRB3 mediates vascular remodeling by activating the MAPK signaling pathway in hypoxic pulmonary hypertension

doi: 10.1186/s12931-021-01908-4

Figure Lengend Snippet: Effect of TRB3 knockdown on proliferation, migration, and apoptosis of hypoxic PASMCs. PASMCs were transfected with lentiviral vectors encoding short hairpin RNAs targeting against rat TRB3(si-TRB3) or negative control(si-NC) for further analysis. A CCK-8 assays were performed to test cell viability after TRB3 knockdown in hypoxic PASMCs. B The EdU proliferation assay was used to measure cell proliferation. All images are × 400 magnification. C EdU‐positive cells were analyzed. D and E The expression of PCNA and Survivin was examined by western blot, and the gray value was quantified by ImageJ software. F Cell apoptosis was evaluated by Hoechst 33342 staining, and the percentage of apoptosis was quantified. G Crystal violet staining of PASMCs is presented at × 200 magnification for the Transwell assay, and the migrated cells were counted manually. H Apoptosis-related protein expression was evaluated and quantification of the analysis is shown. I The expression of MMP9 was evaluated. Data represent the mean ± SEM (n = 4). *P < 0.05 and **P < 0.01 compared to normoxic PASMCs transfected with si-NC. # P < 0.05 and ## P < 0.01 compared to hypoxic PASMCs transfected with si-TRB3. si-NC, lentiviral vectors encoding the negative control sequence; si-TRB3, lentiviral vectors encoding the short-hairpin RNAs against rat TRB3; PCNA, proliferating cell nuclear antigen; TRB3, Tribbles homolog 3; BAX, BCL2 associated X; Bcl2, B cell leukemia/lymphoma 2; MMP9, matrix metallopeptidase 9

Article Snippet: Paraffin sections of the lung were stained with hematoxylin–eosin (HE), anti-α-smooth muscle actin (α-SMA) (1:100; Boster Biological Technology, Wuhan, China), anti-proliferating cell nuclear antigen (PCNA) (1:100; Proteintech Group), and anti-TRB3 (1:100; Proteintech Group).

Techniques: Knockdown, Migration, Transfection, Negative Control, CCK-8 Assay, Proliferation Assay, Expressing, Western Blot, Software, Staining, Transwell Assay, Sequencing

Journal: Respiratory Research

Article Title: TRB3 mediates vascular remodeling by activating the MAPK signaling pathway in hypoxic pulmonary hypertension

doi: 10.1186/s12931-021-01908-4

Figure Lengend Snippet: Inhibitors of ERK, JNK, and p38 MAPK reversed the effect of TRB3 overexpression on PASMC biological behavior. A The CCK-8 assay was used to evaluated the proliferation of TRB3-overexpressing cells after treating with U0126, SP600125, and SB203580. B – D Western blot analysis of PCNA expression in TRB3 overexpressing cells incubated with U0126, SP600125, or SB203580 for 12 h. E Cell apoptosis induced by U0126, SP600125 and SB203580 in TRB3-overexpressing cells was evaluated using flow cytometry, and the percentage of early apoptotic (Annexin V+/PI−) and late apoptotic (Annexin V+ /PI+) cells was analyzed. F – H Western blot analysis of the protein expression of PARP, BAX, and Bcl2 in TRB3-overexpressing cells incubated with U0126, SP600125, and SB203580 for 12 h. I Crystal violet staining is presented at × 200 magnification for the Transwell assay and the migrated cells were counted and analyzed. J – L Western blot analysis of MMP9 expression in TRB3-overexpressing cells incubated with U0126, SP600125, and SB203580 for 12 h. Data represent the mean ± SEM (n = 4). *P < 0.05 compared to normoxic PASMCs transfected with lv-NC. # P < 0.05 and ## P < 0.01 compared to PASMCs transfected with lv-TRB3. U0126, an ERK signaling inhibitor; SP600125, an JNK signaling inhibitor; SB203580, an p38 MAPK signaling inhibitor

Article Snippet: Paraffin sections of the lung were stained with hematoxylin–eosin (HE), anti-α-smooth muscle actin (α-SMA) (1:100; Boster Biological Technology, Wuhan, China), anti-proliferating cell nuclear antigen (PCNA) (1:100; Proteintech Group), and anti-TRB3 (1:100; Proteintech Group).

Techniques: Over Expression, CCK-8 Assay, Western Blot, Expressing, Incubation, Flow Cytometry, Staining, Transwell Assay, Transfection

Journal: Respiratory Research

Article Title: TRB3 mediates vascular remodeling by activating the MAPK signaling pathway in hypoxic pulmonary hypertension

doi: 10.1186/s12931-021-01908-4

Figure Lengend Snippet: TRB3 knockdown reversed and prevented the progression of hypoxia -induced PH. A The right ventricular systolic pressure(RVSP) was measured by a 1.2-Fr pressure catheter (GuGeShengWu, Wuhan, China) inserted via the right jugular vein and positioned in the right ventricle. B The values of RVSP were obtained using the ADInstruments Powerlab data acquisition system. C Right ventricular hypertrophy was evaluated by the ratio of the RV/(LV + S). The right ventricle (RV) was peeled off from the left ventricle (LV) and the septum (S), and the dry weight of the two components was measured. D Systemic blood pressure was measured by a 1.2-Fr pressure catheter inserted via the left carotid artery. E Lung tissue sections were stained for hematoxylin–eosin (HE) (magnification, × 200) and α-SMA (magnification, × 400). F Pulmonary vascular remodeling was evaluated by the percentage of medial wall thickness of distal pulmonary vessels, which was expressed using the following equation: [(external diameter − internal diameter)/external diameter]. G The whole pulmonary artery of each rat from different groups was extracted, and TRB3 protein expression in each group was measured by western blot analysis. H and I PCNA protein expression in pulmonary arteries was examined by immunohistochemical staining and western blot analysis. J MMP9 protein expression in pulmonary arteries was examined by western blot analysis. K The phosphorylated forms of ERK, JNK, and p38 MAPK in pulmonary arteries in each group were evaluated by western blot analysis. Data represent the mean ± SEM (n = 4). *P < 0.05 and **P < 0.01

Article Snippet: Paraffin sections of the lung were stained with hematoxylin–eosin (HE), anti-α-smooth muscle actin (α-SMA) (1:100; Boster Biological Technology, Wuhan, China), anti-proliferating cell nuclear antigen (PCNA) (1:100; Proteintech Group), and anti-TRB3 (1:100; Proteintech Group).

Techniques: Knockdown, Staining, Expressing, Western Blot, Immunohistochemical staining

Journal: Frontiers in pharmacology

Article Title: Transcription factor MEF2D regulates aberrant expression of ACSL3 and enhances sorafenib resistance by inhibiting ferroptosis in HCC.

doi: 10.3389/fphar.2024.1464852

Figure Lengend Snippet: FIGURE 2 The aberrant expression of ACSL3 in HCC protects cells from ferroptosis. (A) Genes highly correlated with ACSL3 in HCC were analyzed using Pearson text (B, C) Heatmaps displayed the top 50 genes that are positively and negatively correlated with ACSL3 in HCC. (D) KEGG pathway analysis revealed the correlation between ACSL3 and fatty acid biosynthesis and ferroptosis signaling pathway (E, F) After transfecting ACSL3-oe and control plasmids into PLC/PRF/5 cells, the mRNA and protein expression levels of ACSL4, GPX4, and FTH1 were quantified using qPCR and Western blotting. Vinculin protein served as the internal control. ****p < 0.0001, ***p < 0.001, **p < 0.01, *p < 0.05.

Article Snippet: ACSL3 antibody (Santa cruz, 1:100, Cat# sc-166374), ACSL4 Rabbit pAb (ABclonal, 1:1,000, Cat#A6826), MEF2D antibody (Santa cruz, 1:500, Cat# sc-271153), GPX4Monoclonal antibody (proteintech, 1:1,000, Cat No.: 67763-1- Ig), Ferritin heavy chain Polyclonal antibody (FTH1) (proteintech, 1:1,000, Cat No.: 11682-1-AP), Vinculin Monoclonal antibody (proteintech, 1:10,000, Cat No.: 66305-1-Ig).

Techniques: Expressing, Control, Western Blot