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Effect of andrographolide on quorum sensing and relevant virulence genes of Candida albicans / 中国中药杂志
China Journal of Chinese Materia Medica ; (24): 292-297, 2015.
Article in Chinese | WPRIM | ID: wpr-305306
ABSTRACT
<p><b>OBJECTIVE</b>To investigate the effect of andrographolide (AG) on quroum sensing (QS) and relevant virulence genes of Candida albicans.</p><p><b>METHOD</b>Gas-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.</p><p><b>RESULT</b>At 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.</p><p><b>CONCLUSION</b>AG could inhibit the farnesol secretion, promote the tyrosol secretion and down-regulate QS-related virulence genes CHK1 and PBS2 expressions.</p>
Subject(s)
Full text: Available Index: WPRIM (Western Pacific) Main subject: Pharmacology / Phenylethyl Alcohol / Physiology / Virulence / Candida albicans / Diterpenes / Quorum Sensing / Farnesol / Real-Time Polymerase Chain Reaction / Genes, Fungal Language: Chinese Journal: China Journal of Chinese Materia Medica Year: 2015 Type: Article

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Full text: Available Index: WPRIM (Western Pacific) Main subject: Pharmacology / Phenylethyl Alcohol / Physiology / Virulence / Candida albicans / Diterpenes / Quorum Sensing / Farnesol / Real-Time Polymerase Chain Reaction / Genes, Fungal Language: Chinese Journal: China Journal of Chinese Materia Medica Year: 2015 Type: Article