The purpose of this project is to explore the changes in signaling pathways after Mettl3 knockout, and to identify potential downstream target proteins of Mettl3 along with the signaling pathways they are involved in. Ultimately elucidating the molecular mechanisms underlying Mettl3 pathogenesis. Retina of control and Mettl3 knockout mice were collected, and samples were then used for proteomic analysis. After tissue collection, a series of cutting-edge technologies, including protein extraction, enzyme digestion, liquid chromatography-tandem mass spectrometry, and bioinformatics analysis, were employed to investigate the quantitative proteome of the samples.