Journal: Theranostics
Article Title: Engineered Dll4-overexpressing osteocyte-derived exosomes enhanced bone regeneration by regulating osteogenesis and angiogenesis
doi: 10.7150/thno.121905
Figure Lengend Snippet: Dll4-Exo regulates osteogenic differentiation via Notch signaling pathway. ST2 cells were co-cultured with GFP-Exo or Dll4-Exo in the presence or absence of DAPT for 3 days, followed by qRT-PCR, ALP staining, and western blot. (A) qRT-PCR of Notch target genes ( Hes1, Hey1, HeyL ). (B) qRT-PCR of osteogenic marker genes ( Alpl, Osx, Col1 ). (C) ALP staining. Scale bar = 100 μm. (D) Western blot of osteogenic proteins (Alp, Osx, Runx2). * p < 0.05 , ** p < 0.01 , *** p < 0.001 vs. GFP-Exo group; # p < 0.05 , ## p < 0.01 , ### p < 0.001 vs. same groups without DAPT.
Article Snippet: After fixation and permeabilization, samples were incubated with primary antibodies against Alp, Osx, collagen I, CD31, ɑSMA, osteocalcin (OCN), osteopontin (OPN) (Abcam, UK) and Hes1 (MedChemExpress, USA) overnight at 4 °C, followed by fluorophore-conjugated secondary antibodies for 2 h at RT.
Techniques: Cell Culture, Quantitative RT-PCR, Staining, Western Blot, Marker