Journal: bioRxiv
Article Title: Deuterated Polyunsaturated Fatty Acids Alleviate In Vitro Skeletal Muscle Dysfunction Induced by Oxidative Stress
doi: 10.64898/2025.12.29.696779
Figure Lengend Snippet: (A) To assess the effect of erastin during differentiation, proliferating C2C12 myoblasts were pretreated with a 25 µM dose of individual D-PUFAs including D-ARA, D-EPA, D-DPA, or D-DHA for 24 hours. Confluent myoblasts were then induced to differentiate in DM containing ferroptosis inducer erastin (10 µM) and fresh D-PUFAs (25 µM) for 72 hours. (B-D): Total DAPI + cell count ( B ), average myonuclei per myotube ( C ), and average myotube diameter ( D ) were measured using ImageJ. (E): To assess the effect of erastin on mature myotubes, confluent C2C12 cells were induced to differentiate in DM for 48 hours and then pretreated with individual D-PUFAs for 24 hours. Subsquently, myotubes continued to grow in fresh DM containing erastin (10 µM) and fresh D-PUFAs for 72 hours. (F-H): Total DAPI + cell count ( F ), average myonuclei per myotube ( G ), and myotube diameter ( H ) were quantified using ImageJ. Myotubes were fixed and visualized after immunofluorescent staining for sarcomeric myosin (MF20c, colored green) and myogenin (F5Dc, colored red). Cell nuclei were counterstained with DAPI (blue). Scale bar is 200 µm. *P<0.05 for difference during differentiation, #P<0.05 for difference post differentiation.
Article Snippet: The C2C12 murine skeletal muscle cell line (ATCC, CRL-1772) was cultured in Dulbecco’s modified Eagle medium (DMEM, Gibco, 11995-065) containing 10% fetal bovine serum (FBS, Corning, 35-010-CV) and antibiotics (penicillin 100 U/mL, streptomycin 100 μg/mL, Gibco, 15140-122) at 37 °C in humid air with 5% CO 2 .
Techniques: Cell Counting, Staining