Extracted Trans-Resveratrol from Arachis hypogaea Enhances Expression of Sirtuin Gene and Replicative Life Span in Saccharomyces cerevisiae

Main Article Content

Mritunjay Kumar Singh
Ravi Deval

Abstract

Aims: Biotic stress given by Aspergillus niger enhances trans-resveratrol production in Arachis hypogaea plant. This plant extract  increases sir2 gene expression and Replicative Life Span in  Saccharomyces cerevisiae.

Design of Study: Peanut plant was grown in aseptic environment, infected by Aspergillus niger. Plant extract used for quantification of trans-resveratrol by RP-HPLC. Yeast culture was grown in Potato dextrose media along with plant extract. Sir2 gene expression fold calculated by real time pcr. Replicative Life Span of yeast was measured by spectrophotometer.

Place and Duration of Study: Allele Life Sciences Pvt. Ltd., Department of Biotechnology between February 2017 to March 2020.

Methodology: Biotic stress in Arachis hypogaea plant was induced by wounding the leaves and introducing Aspergillus niger to enhance trans-resveratrol production. Tran-resveratrol was quantified by Reverse Phase High Pressure Liquid Chromatography (RP-HPLC). Two methods conducted to check reverse ageing, first one epigenetic based, when extracted trans-resveratrol from infected Arachis hypogaea plant extract added to Saccharomyces cerevisiae culture, it enhanced expression of Sir2 gene in Saccharomyces cerevisiae measured by qPCR, ABI applied biosystem. Process included RNA isolation, cDNA synthesis and thereafter qPCR. Enhanced expression of sirtuin responsible for gene silencing as sirtuin (Sir2 gene product) is a class of Histone deacetylase transferase enzyme. Second method, Replicative Life Span of Saccharomyces cerevisiae culture increased when Aspergillus niger infected peanut plant extract added to yeast culture which was measured through spectrophotometer at 600nm and showed high absorbance value.

Results: Tran-resveratrol was quantified by Reverse Phase High Pressure Liquid Chromatography (RP-HPLC) and yield was 2.24 mg/g. Sir2 gene expression increased by 1.56 fold in yeast grown in infected peanut plant extract. Absorbance of yeast culture grown in infected peanut plant extract was 0.522±0.008 which was higher than control.

Conclusion: Sir2 gene expression enhances along with replicative life span in yeast in presence of peanut plant extract.

Keywords:
Replicative life span, sirtuin, reverse ageing, peanut, yeast.

Article Details

How to Cite
Singh, M. K., & Deval, R. (2020). Extracted Trans-Resveratrol from Arachis hypogaea Enhances Expression of Sirtuin Gene and Replicative Life Span in Saccharomyces cerevisiae. Journal of Pharmaceutical Research International, 32(29), 48-59. https://doi.org/10.9734/jpri/2020/v32i2930883
Section
Original Research Article

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