Journal: International Journal of Molecular Sciences
Article Title: Development of Emerin mRNA Lipid Nanoparticles to Rescue Myogenic Differentiation
doi: 10.3390/ijms26167774
Figure Lengend Snippet: EMD-LNPs rescue differentiation of emerin-null myogenic progenitors. ( A ) Line graph showing the timing of LNP treatment (green dot), differentiation induction, and sample collection (pink dot). Wildtype myogenic progenitors treated with PBS (WT + PBS), emerin-null progenitors treated with PBS (EMD −/y + PBS), or emerin-null progenitors treated with 2.5 pg/cell of EMD-LNPs (EMD −/y + LNP) were incubated for 22 h and induced to differentiate. ( B ) After 24 h, the cells were incubated with EdU for 2 h. The cells were fixed and incubated with emerin antibodies. EdU, red; emerin, green; DAPI, DNA (blue). ( C ) Quantification of EdU-positive nuclei. ( D , F ) Immunofluorescence microscopy was performed after 48 h ( D ) or 72 h ( F ) to detect MyHC (red) or emerin (green). DAPI, DNA (blue). ( E ) The differentiation index was quantified by determining the percentage of MyHC-positive cells. ( G ) The fusion index represents the percentage of nuclei present in a shared (≥3 nuclei/cell) MyHC-positive cytoplasm. ( H ) Western blot images of myogenesis markers in differentiating myogenic progenitors. Representative images of normal exposure (i) or increased exposure (ii) are shown. Scale bars represent 100 µm. Error bars represent S.D. ( n = 4; ≥100 nuclei per biological replicate); * p ≤ 0.05; ** p ≤ 0.01; *** p ≤ 0.001.
Article Snippet: Membranes were stained with primary antibodies against emerin (1:3000; ProteinTech #10351-1-AP; Rosemont, IL, USA), γ -tubulin (1:10,000; Invitrogen #MA1-850; Carlsbad, CA, USA), MyoD (1:200; Santa Cruz #sc-304; Dallas, TX, USA), MyoG (1:250: Abcam #ab1835; Cambridge, UK), H3K9me2 (1:1500; Active Motif #39239; Carlsbad, CA, USA), or H4K5ac (1:1500; Sigma-Aldrich #07-327; St. Louis, MO, USA) diluted in 0.5% milk in PBST.
Techniques: Incubation, Immunofluorescence, Microscopy, Western Blot