Journal: Aging and Disease

Article Title: The Flip Side of the Coin: METTL3 Serves as a Novel Cellular Senescence Accelerator via Negative Regulation of ITGA9

doi: 10.14336/AD.2024.1715

Figure Lengend Snippet: M6A modifications within total mRNA were significantly enhanced during the aging process . ( A ) Left: representative photographs of 2-month and 20-month-old male C57BL/6 mouse; Right: representative photographs of SA-β-gal staining in kidney tissues from young and old C57-BL/6 mice. ( B ) Left: representative photographs of SA-β-gal staining of P3 and P9 MEF cells; Right: the p16 expression levels in P3 and P9 MEF cells. ( C ) Left: representative photographs of SA-β-gal staining of H 2 O 2 -induced premature senescence of NIH/3T3 cells; Right: the p16 expression levels in H 2 O 2 treated NIH/3T3 cells. ( D ) Poly(A)+ RNA was extracted from the brain and liver tissue of young and old C57-BL/6 mice and subjected to RNA dot-blot analysis with an antibody recognizing m6A. Methylene blue staining served as the loading control. ( E ) Poly(A)+ RNA was extracted from the P3 and P9 MEF cells and subjected to RNA dot-blot analysis with an antibody recognizing m6A. Methylene blue staining served as the loading control. ( F ) Poly(A)+ RNA was extracted from the P3 and P9 MEF cells and subjected to RNA dot-blot analysis with an antibody recognizing m6A. Methylene blue staining served as the loading control. ( G ) Expression levels of m6A modification associated proteins were measured in P3 and P9 MEF cells, and the quantitative results were shown on the right. Mean (±SEM), n=4, passed normality test: Shapiro-Wilk test; One sample t test (MEF P9 vs 1, METTL3: p =0.0027, t = 9.176).

Article Snippet: NIH/3T3 fibroblasts were procured from the American Type Culture Collection (ATCC).

Techniques: Staining, Expressing, Dot Blot, Control, Modification

Journal: bioRxiv

Article Title: Structure Elucidation, Biosynthesis and Biological Evaluation of Neosorangicin A, a Member of the Sorangicin Family

doi: 10.64898/2026.01.26.701680

Figure Lengend Snippet: Intracellular activity of sorangicins against S. aureus Newman in A549 ( A ) and NIH 3T3 ( B ) cells. At 1.75 hours post infection, cells were washed once and treated with different concentrations of rifampicin (RIF), sorangicin A (SorA), neosorangicin A (NeoSorA), or with 0.1% ( v/v ) methanol (control) in the presence of 10 µg mL −1 gentamicin. Reduction of bacterial burden was evaluated 24 hours post infection by CFU (colony-forming unit) counting. Limit of detection (LoD) is 10 1 CFU. Horizontal lines represent mean values of at least three independent biological experiments. Statistical analysis was performed by one-way ANOVA with Dunnett’s multiple comparison test. p < 0.05: *, p < 0.0001: ****.

Article Snippet: Human alveolar epithelial A549 cells (ATCC CCL-185) and murine fibroblast NIH 3T3 cells (ATCC CRL-1658), obtained from the American Type Culture Collection, were cultured in DMEM with 4.5 g/L glucose, 10% fetal bovine serum, 2 mM L -glutamine, 1mM sodium pyruvate and 1% non-essential amino acids at 37 °C and 7.5% CO 2 .

Techniques: Activity Assay, Infection, Control, Comparison