Journal: Molecular Cancer Research

Article Title: Norepinephrine Promotes the β1-Integrin–Mediated Adhesion of MDA-MB-231 Cells to Vascular Endothelium by the Induction of a GROα Release

doi: 10.1158/1541-7786.mcr-11-0130

Figure Lengend Snippet: Figure 6. Expression and function of the chemokine receptors CXCR1 and CXCR2 in tumor cell adhesion to HMVECs under flow conditions. A, the expression of the chemokine receptors CXCR1 and CXCR2 was investigated by PCR. b-Actin served as loading control. The standard is a 100-bp ladder. B, confirmatory experiments were carried out with PC-3 human prostate carcinoma cells. Left, adhesion of the cells to HMVECs under flow conditions; right, PCR of CXCR1 and CXCR2 expression. C and D, adhesion of MDA-MB-231 cells to HMVECs under flow conditions. C, the cells were pretreated with antibodies blocking the chemokine receptors (aCXCR1/2) or an isotypic control antibody (IgG2a). D, the endothelium was overlaid with GROa and IL-8 at a concentration of 1 mg/mL for 3 minutes before the experiment. Denaturated chemokines were used as control. Graphs in (C) and (D) show mean values and SDs of 3 independent experiments. , statistically significant changes (P < 0.05). Nor, norepinephrine.

Article Snippet: For blocking experiments, MDA-MB231 were preincubated for 10 minutes with monoclonal mouse anti-CXCR1 and anti-CXCR2 (each 5 mg/mL; R&D Systems), mouse IgG2a (10 mg/mL; R&D Systems), mouse anti-b1-integrin clone 4B4 (5 mg/mL; Beckman Coulter), or mouse IgG1 (5 mg/mL; Beckman Coulter).

Techniques: Expressing, Control, Blocking Assay, Concentration Assay

Journal: Molecular Cancer Research

Article Title: Norepinephrine Promotes the β1-Integrin–Mediated Adhesion of MDA-MB-231 Cells to Vascular Endothelium by the Induction of a GROα Release

doi: 10.1158/1541-7786.mcr-11-0130

Figure Lengend Snippet: Figure 7. Inhibition of b1-integrins and NF-kB abrogates the effect of norepinephrine on MDA-MB-231 cell adhesion. A, MDA-MB-231 cells were pretreated with either the b1-integrin–blocking antibody 4B4 or an isotypic control antibody (IgG1). B, HMVECs were preincubated with an NF-kB activation inhibitor (NF-kB Inh); norepinephrine (Nor) was used at 10 mmol/L. Both graphs show mean values and SDs of 3 independent experiments. , statistically significant changes (P < 0.05).

Article Snippet: For blocking experiments, MDA-MB231 were preincubated for 10 minutes with monoclonal mouse anti-CXCR1 and anti-CXCR2 (each 5 mg/mL; R&D Systems), mouse IgG2a (10 mg/mL; R&D Systems), mouse anti-b1-integrin clone 4B4 (5 mg/mL; Beckman Coulter), or mouse IgG1 (5 mg/mL; Beckman Coulter).

Techniques: Inhibition, Blocking Assay, Control, Activation Assay