Journal: Frontiers in Immunology
Article Title: METTL3-driven m 6 A modification orchestrates mitophagy-dependent ferroptosis in PM2.5-induced lung injury
doi: 10.3389/fimmu.2025.1683819
Figure Lengend Snippet: METTL3 drove PM2.5-induced mitophagy-dependent ferroptosis through m 6 A-dependent stabilization of PINK1 mRNA. (A, B) qRT-PCR analysis of the mRNA levels of PINK1 and PARKIN in Beas-2B cells with METTL3 overexpression. (C) Western blotting analysis of PINK1 and PARKIN expression in Beas-2B cells with METTL3 overexpression. (D, E) Immunofluorescence analysis of PINK1 and PARKIN levels in Beas-2B cells with METTL3 silence; scale bars = 10 μm. (F, G) Quantitative analysis of the mean fluorescence intensity of PINK1 and PARKIN. (H) Immunofluorescence analysis of PINK1 and PARKIN in lungs in each group; scale bars = 20 μm. (I) Quantitative analysis of the mean fluorescence intensity of PINK1 and PARKIN in mice. (J, K) The m 6 A enrichment level of PINK1 was quantified by MeRIP-qPCR among the different experimental groups. (L) PINK1 mRNA levels were analyzed by RT-qPCR assay in OE-METTL3 cells after Actinomycin-D treatment for 0, 2, 4, and 6 (H) All data presented in this study are representative of at least three independent experiments. Data are presented as the mean ± SEM. PM2.5, particulate matter ≤2.5 μm.
Article Snippet: The primary antibodies used in this study were as follows: rabbit anti-FACL4 antibody (ab155282, Abcam, Cambridge, UK), rabbit anti-METTL3 antibody (ab195352, Abcam, UK), rabbit anti-xCT antibody (DF12509, Affinity, Shanghai, China), rabbit anti-PINK1 antibody (23274-1-AP, Proteintech, Wuhan, China), rabbit anti-PARK2 antibody (14060-1-AP, Proteintech, Wuhan, China), rabbit anti-TOM20 antibody (42406S, CST, Boston, USA), mouse anti-LC3B antibody (83506S, CST, Boston, USA), and mouse anti-β-actin antibody (66009-1-Ig, Proteintech, Wuhan, China), mouse anti- GAPDH (60004-1-Ig, Proteintech, Wuhan, China).
Techniques: Quantitative RT-PCR, Over Expression, Western Blot, Expressing, Immunofluorescence, Fluorescence