Journal: International Journal of Molecular Sciences
Article Title: The Nucleolar Protein Nucleophosmin Is Physiologically Secreted by Endothelial Cells in Response to Stress Exerting Proangiogenic Activity Both In Vitro and In Vivo
doi: 10.3390/ijms22073672
Figure Lengend Snippet: ( A – C ). Biological effects of exogenous NPM on endothelial cells. ( A ) The graph shows that the exogenous recombinant NPM (rNPM 200 ng/mL, w/rNPM) is able to foster migration of HUVEC. The 10% Fetal Bovine Serum (FBS) and the EBM TM -2 have been used as positive and negative stimulus, respectively (Pos Ctl, positive control; Neg Ctl, negative control). Below the graph are representative images of migrated cells. Magnification 4X. Data are the results of 5 independent experiments (technical duplicates). * p < 0.05, ** p < 0.01. ( B ) Proliferation assay (MTS assay) showing that the increased migration of HUVEC upon rNPM treatment is not associated to an enhancement of the proliferation up to 96 h. Data are the results of 4 independent experiments (technical duplicates). * p < 0.05. Complete medium has been used as the positive control (Pos Ctl). O.D., optical density, normalized vs. time 0. ( C ) FACS Analysis displaying scatter plots (top panel) with gating strategy to analyze only viable cells for ICAM-1 and VCAM-1 expression in the presence (w/rNPM) or in the absence of rNPM (w/o rNPM) treatment. Quantification plot (Bottom panel) showing that rNPM can significantly increase the percentage of positive HUVEC for ICAM-1 but not for VCAM-1. Data are the results of 4 independent experiments. ** p < 0.01.
Article Snippet: Cells were cultured in HUVEC complete growth medium (EGM TM -2 Endothelial Cell Growth Medium-2 BulletKit TM Lonza, Cat. N. CC-3162.
Techniques: Recombinant, Migration, Positive Control, Negative Control, Proliferation Assay, MTS Assay, Expressing