A Simple and Easy Method for RNA Extraction from the Cyanobacterium Synechocystis sp. PCC 6803

Area of Science:

• Biotechnology
• Molecular Biology
• Microbiology

Background:

• Cyanobacteria are vital model organisms for photobiochemical research and hosts for producing biochemicals.
• Analyzing cellular RNA is crucial for understanding genetic modifications in these organisms.
• Existing RNA extraction methods often use hazardous phenol and chloroform, are time-consuming, and complex.

Purpose of the Study:

• To develop a novel, safe, and efficient method for total ribonucleic acid (RNA) extraction from cyanobacteria.
• To provide an alternative to hazardous and time-consuming existing RNA extraction protocols.
• To ensure the extracted RNA is suitable for downstream molecular applications.

Main Methods:

• Utilized standard centrifugation techniques and common laboratory chemicals (citric acid, EDTA, SDS, NaCl, tri-sodium citrate dihydrate).
• Applied the method to *Synechocystis* sp. PCC 6803 as a model organism.
• Avoided the use of hazardous chemicals like phenol and chloroform.

Main Results:

• Successfully extracted high-quality total RNA from cyanobacterial cells.
• Quantification, purity, and integrity checks confirmed the effectiveness of the method.
• RT-qPCR analysis validated the suitability of the extracted RNA for downstream applications.
• The method is cost-effective and requires less than an hour for RNA extraction.

Conclusions:

• The developed RNA extraction method is simple, efficient, safe, and cost-effective.
• This protocol yields high-quality RNA suitable for various downstream applications, including RT-qPCR.
• The method shows potential for application in other cyanobacteria and algal species.