Journal: Translational Oncology
Article Title: Exogenous dihomo-γ-linolenic acid triggers ferroptosis via ACSL4-mediated lipid metabolic reprogramming in acute myeloid leukemia cells
doi: 10.1016/j.tranon.2024.102227
Figure Lengend Snippet: Deletion of ACSL4 inhibits the anticancer activity of DGLA in vivo . ( a ) Hypodermic injection of Kasumi-1 cells stably transfected with sgNC or sgACSL4 into BALB/c nude mice and treated with DGLA or vehicle, established subcutaneous xenograft tumors (n = 6 mice/group). ( b ) Tumor images show the relative sizes of the xenograft tumors formed by Kasumi-1 cells expressing sgNC or sgACSL4 and treated with DGLA or vehicle on day 18. ( c ) Changes in tumor volumes over time for mice implanted with Kasumi-1 cells expressing sgNC or sgACSL4 and treated with DGLA or vehicle. ( d - e ) Measures of tumor volume ( d )and tumor weight ( e ) values of mice at the study endpoint. ( f - h ) The levels of lipid ROS ( f ), MDA ( g ), and Fe 2+ ( h ) in xenograft tumors treated with vehicle or DGLA for 18 days (n = 6 tumor samples from different animals per group). ( i ) TEM images of mitochondria ultrastructure in xenograft tumors treated with DGLA or vehicle for 18 days. Scale bars: upper panel, 1 μm; lower panel, 500 nm. White arrows indicate normal mitochondria, red arrows indicate abnormal mitochondrial structure, yellow arrows indicate lipid droplets. Data are shown as mean ± SD, ** p < 0.01, *** p <0.001.
Article Snippet: A monoclonal cell line (ACSL4-negative-control (ACSL4-NC): sgNC, ACSL4-knockout (ACSL4-KO): sgACSL4) was selected by Puromycin (P8230, Solarbio, China).
Techniques: Activity Assay, In Vivo, Injection, Stable Transfection, Transfection, Expressing