Effect of L. plantarum and their EPS on intestinal adhesion and inflammation in Caco-2 cells. Relative mRNA expression levels of (A) ZO-1, (B) OCL-1, (C) IL-1β, (D) IL-6, (E) MMP1, and (F) MMP2 in Caco-2 cells were investigated by qPCR and normalized against GAPDH. mRNA data are expressed as means ± SD (n = 4), and values labeled with different letters are significantly different, p < 0.05 (a > b > c > d). CON, control cells; T, cells treated with 100 ng/mL TNFα; T+7714, cells treated with 100 ng/mL TNFα and 5 × 106 CFU of HY7714; T+7714E, cells treated with 100 ng/mL TNFα with 1 μg/mL HY7714 EPS; T+7711, cells treated with 100 ng/mL TNFα with 5 × 106 CFU of HY7711; T+7711E, cells treated with 100 ng/mL TNFα with 1 μg/mL HY7711 EPS.