Exploring the Mechanism of Baicalin in Influencing Cells Infected with Chlamydia Pneumoniae by Observing Its Effect on Receptors
- VernacularTitle:从受体角度探讨黄芩苷对肺炎衣原体感染细胞的干预机理
- Author:
Zaoyuan KUANG
;
Linchun FU
;
Haiyan WO
;
Saixia ZHANG
- Publication Type:Journal Article
- Keywords:
BAICALIN/pharmacology;
TOLL-LIKE RECEPTORS/drug effects;
CELL CULTURE;
CHLAMYDIA PNEUMONIAE
- From:
Journal of Guangzhou University of Traditional Chinese Medicine
2001;0(03):-
- CountryChina
- Language:Chinese
-
Abstract:
[Objective] To observe the effect of Baicalin on the expression of Toll-like receptors (TLRs) induced by chlamydia pneumoniae (CPN). [Methods] The endothelial cells of umbilical veins (ECV-304) was cultured in-vitro in 6-well culture plate (3 double-wells as a group). When a single layer formed, CPN or CPN + baicalin (0.48 g/L or 0.24 g/L) was added, serving as the model group and baicalin groups respectively. The wells without adding agents served as the normal group. After 5 days of culture, the intracellular growth of CPN in ECV-304 was examined by monoclonal antibody fluorescence labeling method and Giemsa stain, and the expression of TLR2 mRNA and TLR4 mRNA was detected by reverse transcriptase polymerase chain reaction (RT-PCR) in the model group. Protein expression of TLR2 on ECV-304 cell surface in the cultured supernatants was detected with flow cytometer. [Results] The intracellular growth of CPN can be found in ECV-304. The expression of TLR4 mRNA was undetectable, and high expression of TLR2 mRNA and TLR2 protein existed in ECV-304. Baicalin in high doses could lower the expression of TLR2 protein. [Conclusion] Baicalin has an inhibitory effect on the high expression of TLR2 protein in ECV-304 stimulated by CPN.
