Journal: Frontiers in Genetics
Article Title: IGF-1 secreted by mesenchymal stem cells affects the function of lymphatic endothelial progenitor cells: a potential strategy for the treatment of lymphedema
doi: 10.3389/fgene.2025.1584095
Figure Lengend Snippet: Insulin-like growth factor 1 (IGF-1) secreted by MSC promotes LEPC proliferation and inhibits apoptosis. (A) LEPCs were cultured alone or co-cultured with MSCs for 0 h, 24 h, 48 h or 72 h. Absorbance of LEPCs was measured by CCK-8. **p < 0.01,***p < 0.001 versus LEPCs group; (B,C) LEPCs were co-cultured with MSCs for 72 h. Representative images of EdU + LEPCs and statistical analysis. ***p < 0.001 versus LEPCs group; (D) ELISA for IGF-1 in the culture medium of MSCs or LEPCs. ***p < 0.001 versus MSCs group; (E) Absorbance of LEPCs was detected by CCK-8 after LEPCs were cultured alone, co-cultured with MSCs, or anti-IGF-1 was added to the co-culture system. *p < 0.01 versus LEPCs group; #p < 0.01 versus MSCs + LEPCs group; Cells were then stained with EdU and statistically analysed for positive cells (F,G) . ***p < 0.001 versus LEPCs group; ###p < 0.001 versus MSCs + LEPCs group; (H) CCK-8 experiments to validate the concentration and time dependence of LEPCs on IGF-1. **p < 0.01, ***p < 0.001 versus Control group; (I,J) Immunoblotting of apoptosis-associated proteins and quantification of blotting intensity after 72 h of IGF-1 (100 ng/mL) treatment of LEPCs, GAPDH was used as a loading control. ***p < 0.001 versus LEPCs group; (K) Representative images of apoptotic cells detected by flow cytometry; (L) Quantification of early, late and total apoptotic percentages in untreated or IGF-1-treated LEPCs. *p < 0.05 versus untreated control cells. scale bar 100 µm in B,F; MSCs, mesenchymal stem cells; LEPCs, lymphatic endothelial progenitor cells; IGF-1,insulin-like growth factor 1.
Article Snippet: When the fusion of the cells reached 90%–100%, the cells were cultured for 2–3 weeks using mouse bone marrow mesenchymal stem cell lipogenic induced differentiation medium (Procell, China) or osteogenic induced differentiation complete medium (Procell, China) according to the protocols.
Techniques: Cell Culture, CCK-8 Assay, Enzyme-linked Immunosorbent Assay, Co-Culture Assay, Staining, Concentration Assay, Control, Western Blot, Flow Cytometry