DOWN-REGULATION OF THE ALS3 GENE AS A CONSEQUENT EFFECT OF RNA-MEDIATED SILENCING OF THE EFG1 GENE IN CANDIDA ALBICANS

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MOAZENI MARYAM; KHORRAMIZADEH MOHAMMAD REZA; TEIMOORI TOOLABI LADAN; NOORBAKHSH FATEMEH; FALAHI ALI AKBAR; REZAIE SASSAN

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Journal: Iranian Biomedical Journal Year:2012 | Volume:16 | Issue:4 Page(s): 172-178

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Title

DOWN-REGULATION OF THE ALS3 GENE AS A CONSEQUENT EFFECT OF RNA-MEDIATED SILENCING OF THE EFG1 GENE IN CANDIDA ALBICANS

Author(s)

Keywords

CANDIDA ALBICANS

ALS3

RNAI

EFG1

Abstract

Background: The most important virulence factor which plays a central role in CANDIDA ALBICANS pathogenesis is the ability of this yeast to alternate between unicellular yeast and filamentous hyphal forms. EFG1 protein is thought to be the main positive regulating transcription factor, which is responsible for regulating hyphal-specific gene expression under most conditions. ALS3 is one of the EFG1-associated genes encoding a multi-functional adhesive polypeptide, which mediates adherence to diverse host substrates. In this study, the EFG1 gene was knocked down by using synthetic siRNA in C. albicans and the regulation in ALS3 as one of the EFG1-dependent genes was investigated.Method: The 19-nucleotide siRNA was designed based on cDNA sequence of EFG1 gene in C. albicans. Transfection was performed using modified- plyethylen glycol/LiAc method. To quantify the level of EFG1 and the hyphal-specific ALS3 gene expression, the cognate EFG1 and ALS3 mRNA were measured in C. albicans by quantitative real-time RT-PCR.Results: Fluorescent microscopy pictures indicated that transfection was performed successfully. Also, according to relative expression software tool, expression of EFG1 gene was decreased significantly with 500 nM siRNA as well as 1 mM siRNA (P<0.05). However, more significant downregulations were observed in the expression of ALS3 in both concentrations of 500 nM and 1 mM siRNA (P<0.05).Conclusion: In conclusion, we demonstrated the down-regulation of ALS3 gene as a consequent of applying EFG1-specific siRNA in C. albicans. This may lead us to design anti-fungal-specific agents in order to face with C.

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APA: Copy

MOAZENI, MARYAM, KHORRAMIZADEH, MOHAMMAD REZA, TEIMOORI TOOLABI, LADAN, NOORBAKHSH, FATEMEH, FALAHI, ALI AKBAR, & REZAIE, SASSAN. (2012). DOWN-REGULATION OF THE ALS3 GENE AS A CONSEQUENT EFFECT OF RNA-MEDIATED SILENCING OF THE EFG1 GENE IN CANDIDA ALBICANS. IRANIAN BIOMEDICAL JOURNAL, 16(4), 172-178. SID. https://sid.ir/paper/277423/en

Vancouver: Copy

MOAZENI MARYAM, KHORRAMIZADEH MOHAMMAD REZA, TEIMOORI TOOLABI LADAN, NOORBAKHSH FATEMEH, FALAHI ALI AKBAR, REZAIE SASSAN. DOWN-REGULATION OF THE ALS3 GENE AS A CONSEQUENT EFFECT OF RNA-MEDIATED SILENCING OF THE EFG1 GENE IN CANDIDA ALBICANS. IRANIAN BIOMEDICAL JOURNAL[Internet]. 2012;16(4):172-178. Available from: https://sid.ir/paper/277423/en

IEEE: Copy

MARYAM MOAZENI, MOHAMMAD REZA KHORRAMIZADEH, LADAN TEIMOORI TOOLABI, FATEMEH NOORBAKHSH, ALI AKBAR FALAHI, and SASSAN REZAIE, “DOWN-REGULATION OF THE ALS3 GENE AS A CONSEQUENT EFFECT OF RNA-MEDIATED SILENCING OF THE EFG1 GENE IN CANDIDA ALBICANS,” IRANIAN BIOMEDICAL JOURNAL, vol. 16, no. 4, pp. 172–178, 2012, [Online]. Available: https://sid.ir/paper/277423/en

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