Lin X, Liu ZF, Ding YH, Wang F, Pan HQ, Li J. Effect of IL-22 on expression of intestinal trefoil factor in intestinal epithelial cells.
Shijie Huaren Xiaohua Zazhi 2015;
23:1290-1297. [DOI:
10.11569/wcjd.v23.i8.1290]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the effect of interleukin-22 (IL-22) on the intestinal trefoil factor (ITF/TFF3) expression in IEC-6 cells and discuss the possible mechanism.
METHODS: IEC-6 cells were treated with IL-22 at different concentrations (1, 10, or 100 ng/mL) for 12, 24, or 48 h. The mRNA expression of TFF3, signal transducer and activator of transcription 3 (STAT3), STAT6 and nuclear factor-κB (NF-κB) in IEC-6 cells was measured by RT-PCR.
RESULTS: The mRNA expression of TFF3 and STAT3 in IEC-6 cells treated with 1 ng/mL IL-22 was not significantly up-regulated when incubated for 0, 12, 24 or 48 h (P > 0.05). With time increasing, the mRNA expression of TFF3 in IEC-6 cells treated with 10 ng/mL IL-22 increased and the comparison between any two time points of 0, 12, 24 and 48 h showed significant differences (P < 0.05) except the comparison between the time points of 12 and 24 h; the mRNA expression of STAT3 also increased, and there were significant differences in any two time points (P < 0.05), except between 0 and 12 h (P > 0.05). When treated with 100 ng/mL IL-22, the mRNA expression of TFF3 in IEC-6 cells showed obvious up-regulation with time increasing, and the comparison between any two time points was statistically different (P < 0.05); the relationship between the mRNA expression of STAT3 and treatment time was the same as the group of 10 ng/mL. When IEC-6 cells were treated for 12 h, the mRNA expression of TFF3 was significantly higher in the 100 ng/mL group compared with the 1 ng/mL and 10 ng/mL groups (P < 0.05), although there was no statistical difference between the groups of 1 ng/mL and 10 ng/mL; the mRNA expression of STAT3 did not show a statistical difference (P > 0.05). The mRNA expression of TFF3 in IEC-6 cells for 24 and 48 h was significantly up-regulated as the concentration of IL-22 increased, and the comparison between any two concentrations of IL-22 showed a significant difference (P < 0.05); the mRNA expression of STAT3 was also up-regulated, showing a significant difference between any two concentrations of IL-22 except the comparison between the groups of 10 ng/mL and 100 ng/mL. We could not measure the expression of STAT6 mRNA, and the mRNA expression of NF-κB did not show a significant difference among the groups (P > 0.05).
CONCLUSION: IL-22 may up-regulate the mRNA expression of TFF3 in IEC-6 cells through the STAT3 signal transduction pathway in a time- and dose-dependent fashion.
Collapse