Journal: Experimental and Therapeutic Medicine
Article Title: MicroRNA-16 regulates lipopolysaccharide-induced inflammatory factor expression by targeting TLR4 in normal human bronchial epithelial cells
doi: 10.3892/etm.2021.10414
Figure Lengend Snippet: Treatment of rats and NHBE cells with LPS downregulates miR-16 expression. (A) Hematoxylin and eosin staining revealed histological differences between the lung tissues from rats in the LPS and control groups. The lung tissues from the LPS group showed lung injury, including hemorrhage (clear arrow), interstitial edema (red arrow) and infiltration of inflammatory cells (black arrow). Scale bar, 100 µm. (B) Differences in miR-16 expression between rats in the LPS and control groups were assessed by reverse transcription-quantitative PCR. The levels of (C) TNF-α, (D) IL-1β and (E) IL-6 were measured in rats treated with LPS or PBS (control) using ELISA. * P<0.05 vs. Control. (F) miR-16 expression was decreased following treatment of NHBE cells with increasing concentrations of LPS (0, 1, 2, 3, 4, 8 and 16 µg/ml) for 12 h as assessed by reverse transcription-quantitative PCR. * P<0.05 vs. 0 group. (G) miR-16 expression was gradually reduced in NHBE cells incubated with 2 µg/ml LPS for a range of indicated time durations (0, 6, 12, 24, 36 and 48 h) as assessed by reverse transcription-quantitative PCR. * P<0.05 vs. 0 group. * P<0.05. LPS, lipopolysaccharide; ALI, acute lung injury; TNF-α, tumor necrosis factor α; IL, interleukin; NHBE, normal human bronchial epithelial; NC, negative control; miR, microRNA.
Article Snippet: The secretion levels of TNF-α (cat. no. E-EL-R0019c), IL-1β (cat. no. E-EL-H0149c) and IL-6 (cat. no. E-EL-H0102c) were determined using the corresponding ELISA kits (Elabscience Biotechnology Co., Ltd.) in peripheral blood samples of rats and cell culture medium of NHBE cells.
Techniques: Expressing, Staining, Real-time Polymerase Chain Reaction, Enzyme-linked Immunosorbent Assay, Incubation, Negative Control