Regulatory T Cells Protect Fine Particulate Matter-Induced Inflammatory Responses in Human Umbilical Vein Endothelial Cells

Figure 3

Tregs alleviate the expression of VCAM-1 in PM-exposed HUVECs. After the coculture period, HUVECs from different groups were harvested, and the VCAM-1 expression was detected by flow cytometry. (a) Dot plots showing the percentages of VCAM-1 expression in HUVECs. (b) The VCAM-1 expression in different groups of HUVECs. Data are expressed as means ± SEM. ∗ indicates no T, CD4⁺CD25⁻, or CD4⁺CD25⁺ versus control; # indicates no T or CD4⁺CD25⁻ versus CD4⁺CD25⁺; ^∗∗𝑃<0.01; ^##𝑃<0.01. Experiments were repeated 6 times.

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