Journal: Scientific Reports
Article Title: EZH2 as a major histone methyltransferase in PDGF-BB-activated orbital fibroblast in the pathogenesis of Graves’ ophthalmopathy
doi: 10.1038/s41598-024-57926-x
Figure Lengend Snippet: EZH2, G9a and DOT1L inhibition reduced PDGF-BB-induced orbital fibroblasts proliferation and hyaluronan production. ( A ) GO orbital fibroblasts (n = 9) were pre-incubated with selective HKMT inhibitors for 24 h and then stimulated with PDGF-BB (50 ng/ml) in the presence or absence of selective HKMT inhibitors. ( B ) GO orbital fibroblasts (n = 9) were stimulated with PDGF-BB (50 ng/ml) and simultaneously treated with selective HKMT inhibitors. After 24 h, proliferation was determined by methylene blue staining. ( C ) GO orbital fibroblasts (n = 6) were pre-incubated with selective HKMT inhibitors for 24 h and then stimulated with PDGF-BB (50 ng/ml) in the presence or absence selective HKMT inhibitors. ( D ) For treatment setting, the orbital fibroblasts (n = 6) were stimulated with PDGF-BB (50 ng/ml) and selective HKMT inhibitors for 24 h. Afterwards, supernatant was collected, and hyaluronan levels were measured by ELISA. Each dot represents the orbital fibroblast strain from one individual and horizontal bars represent the mean values ± standard deviation (SD). Data were analyzed using the paired Student’s t -test. ***, ** and * represent a p -value of < 0.001, < 0.01 and < 0.05, respectively, compared to PDGF-BB stimulation.
Article Snippet: For the screening experiments, orbital fibroblasts were pre-incubated with selective HKMT inhibitors from Epigenetics Compound Library (Catalog No. L1900, Selleck Chemicals, Inc., TX) for 24 h and stimulated with 50 ng/ml of PDGF-BB (Biolegend Inc., USA), either with or without the HKMTs inhibitors for another 24 h. For further experiments on orbital fibroblast activation, only EZH2, G9a and DOT1L inhibitors were used as shown in Supplementary Table .
Techniques: Inhibition, Incubation, Staining, Enzyme-linked Immunosorbent Assay, Standard Deviation