title: Regulatory Effect of Peptidoglycan on the Expression of Toll-Like Receptor 2 mRNA and Proteins in Trophoblast Cell Line TEV-1 Cells.
abstract: Objective. To investigate the regulatory effect of peptidoglycan on the expression of human Toll-like receptors 2 (TLR2) mRNA and proteins in the human extravillous trophoblast cell line (TEV-1). Methods. TEV-1 cells were incubated with different doses of peptidoglycan. The expression of TLR2 mRNA and protein was detected by reverse transcriptase-polymerase chain reaction (RT-PCR) and immunocytochemistry SP staining. Results. TLR2 was expressed in TEV-1 cells and localized to both the cytoplasm and plasma membrane. Compared with the untreated control, TEV-1 cells incubated with 30 μg/ml peptidoglycan significantly upregulated the expression of TLR2 mRNA and protein after 12 hours of treatment (P < .01). However, the expression of TLR2 mRNA and protein was decreased but had no significant difference compared with the control (P > .05) after 24 hours of treatment. On the other hand, 10 μg/ml peptidoglycan did not seem to have regulatory effect on mRNA and protein expression of TLR2 (P > .05). Conclusion. Peptidoglycan has a role in regulating the expression of TLR2 mRNA and protein in TEV-1 cells. It suggests that the trophoblast cells may play important role in the immune response at the fetal-maternal interface and affect the result of pregnancy by expressing TLR2.
authors.affiliation: Department of Gynaecology, Guangdong Women and Children's Hospital and Health Institute, Guangzhou, 510010, China.
authors.forename: Yi
authors.initials: Y
authors.lastname: Wang
authors.forename: Xi-Ping
authors.initials: XP
authors.lastname: Luo
authors.forename: Chi Eung Danforn
authors.initials: CE
authors.lastname: Lim
authors.forename: Wu Shun Felix
authors.initials: WS
authors.lastname: Wong
authors.forename: Gang
authors.initials: G
authors.lastname: Zhong