RNeasy Plus Mini Kit

RNA isolation / purification Bacteria - Gram positive Staphylococcus aureus

4/5 - 1 Review - 100% recommends this

Experiment
RNA isolation / purification Bacteria - Gram positive Staphylococcus aureus
Product
RNeasy Plus Mini Kit from Qiagen
Manufacturer
Qiagen

Protocol tips

Upstream tips
Pre-treatment with lysostaphin
Protocol tips
To yield high RNA, give the column an extra wash with both RW1 and RPE buffers (3 total washes with each buffer).
Downstream tips
Include DNAse treatment for 15-20min.

Ensure EtOH is completely evaporated off of the column prior to elution. Adjust time from 1min to 5 min at 60`C.

Use water to elute the RNA that is warmed to ~60`C

Publication protocol

Samples of biofilm cells were collected as described above into 3 mL of RNAprotect Bacteria Reagent (Qiagen). Following 10-minute room temperature incubation, mRNA isolation (RNeasy Mini Kit, Qiagen) was carried out using approximately 3 × 108 cells according to the manufacturer’s protocol, with the following modifications. For biofilm experiments, P. aeruginosa cells were treated with 400 μg/mL lysozyme in TE for 5 min at room temperature prior to RNeasy RNA isolation. For planktonic and co-culture experiments, cells were treated with 400 μg/mL lysozyme and 100 μg/mL lysostaphin in TE for 30 min at 37 °C prior to RNeasy RNA isolation. The RNeasy elution step was also modified to use 75 uL of 1X TE (10 mM Tris-HCl 1 mM EDTA) buffer to ensure downstream stability of the RNA during the RNA-seq library preparation. The RNA was subsequently subjected to DNase treatment (TURBO DNA-free DNase Treatment, Ambion) according to the manufacturer’s protocol. RNA quantity and quality were assessed as described below.

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Reviews

Scientist
Review date

Protocol
Adjusted
Changes to downstream processing
Use DNase-1 for removing traces of DNA from your sample.

Product rating
Would recommend?
Yes

What worked well?
  • Cell Lysis
  • good yield of the sample RNA
What could be improved?
  • Does not provide DNAse-1 with the kit

Discussion

Discussion

3 years ago

Author:

Discussion

5 years ago

Author: Paul G. Macon United States

Some help with RNA isolation using Trizol

Hello! I used Trizol to extract total RNA from in-vitro cultured bacteria (1 X 10^8 cells). After phase separation, I mixed ~0.4 ml of the upper phase which contains RNA with 0.5 mL cold isopropanol. However, the amount of RNA when measured in Nanodrop was very low. In addition, the ratio between 260 and 230 was around 0.1 to 0.5. Is there a chance that my sample was contaminated by the Trizol reagent? When I collected the aqueous phase I made sure to not touch the lower phase. What should I do?

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Papers

Check out relevant papers found by Labettor's AI that are relevant for performing RNA isolation / purification Bacteria - Gram positive Staphylococcus aureus using RNeasy Plus Mini Kit from Qiagen.

Paper title
Comparative evaluation of rRNA depletion procedures for the improved analysis of bacterial biofilm and mixed pathogen culture transcriptomes
Full paper
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Manufacturer protocol

Download the product protocol from Qiagen for RNeasy Plus Mini Kit below.

Download PDF Download manufacturer protocol

Videos

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