Effect of andrographolide on quorum sensing and relevant virulence genes of Candida albicans.
- Author:
Yuan-yuan YAN
;
Gao-xiang SHI
;
Jing SHAO
;
Ke-qiao LU
;
Meng-xiang ZHANG
;
Tian-ming WANG
;
Bin WANG
;
Chang-zhong WANG
- Publication Type:Journal Article
- MeSH: Candida albicans; drug effects; genetics; physiology; Diterpenes; pharmacology; Farnesol; analysis; metabolism; Gas Chromatography-Mass Spectrometry; Genes, Fungal; Phenylethyl Alcohol; analogs & derivatives; analysis; metabolism; Quorum Sensing; drug effects; Real-Time Polymerase Chain Reaction; Virulence; genetics
- From: China Journal of Chinese Materia Medica 2015;40(2):292-297
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVETo investigate the effect of andrographolide (AG) on quroum sensing (QS) and relevant virulence genes of Candida albicans.
METHODGas-chromatography-mass spectrometry (GC-MS) was applied to detect the changes in the content of farnesol and tyrosol in C. albicans intervened by AG. The real-time quantitative PCR (qRT-PCR) was adopted to inspect the expressions of relevant virulence genes such as CHK1, PBS2 and HOG1 regulated by QS.
RESULTAt 2 h after the growth of C. albican, the farnesol and tyrosol secretions reduced, without notable change after intervention with AG. The secretions were highest at 12 h and decreased at 24 h. After the intervention with different concentrations of AG, the farnesol content reduces, whereas tyrosol increased, indicating a dose-dependence, particularly with 1 000 mg x L(-1) AG. qRT-PCR revealed that 1 000 mg x L(-1) AG could down-regulate CHK1 by 2.375, 3.330 and 4.043 times and PBS2 by 2.010, 4.210 and 4.760 times, with no significant change in HOG1.
CONCLUSIONAG could inhibit the farnesol secretion, promote the tyrosol secretion and down-regulate QS-related virulence genes CHK1 and PBS2 expressions.