Fig. 5.
Direct differentiation of BDCs from m-NG2/BMMSCs in response to DEN-induced liver injury cues. (Aa-b) The morphology of m-NG2/BMMSCs in control medium (Ctrl-CM, a) and in the DENCM (b), bold arrows indicate assumed NG2+ cells, red arrows indicate as bile duct-like cells. Little change was observed in parental m-BMMSCs during this period (b, right panels) compared to that in Ctrl-CM (a, right panel): S1, S2 in b represent individuals, scale bar = 100 μm; remaining panels: scale bar = 200 μm. (Ba, b) Double IF staining for NG2+ cells (red) or CD9+ cells (green) covered by CK19+ cells (green/red) of m-NG2/BMMSCs (a) and m-BMMSCs (b) cultured in DENCM for 18–24 h. (C) Quantification (Ba, b) of the merged cells. (Da-d) IF staining (red) for host Lyve-1+ cell expression (boxes) in subgroups of liver sections. (Ea, b) Quantificative analysis of Lyve-1 expression in subgroups from boxes in Da-d (a) and the number of vessel-like structures formed from the groups in Dc, d (b, n = 6). (Fa-d) Direct differentiation of Lyve-1+ cells from donor m-NG2/BMMSCs (a) and parental m-BMMSCs (b) in DENCM and comparative quantification of total numbers per quarter area (boxes, c) and the number of vessel-like formations (red arrows, d, n = 6). At least three independent experiments were performed, and the data are presented as the means ± SDs. Scale bar = 200 μm. #p < 0.05 compared with naive; **p < 0.001 compared with m-BMMSCs; ns: no significance compared with m-BMMSCs
