Overview
- Isolate all sizes of circulating and exosomal RNA, including microRNA
- Versatile plasma/serum input ranges
- No phenol extractions
- No carrier RNA
- Bind and elute all RNA irrespective of size or GC content, without bias
- Concentrate circulating RNA and exosomal RNA into a flexible elution volume
- High quality, purified RNA is suitable for a variety of downstream applications, including Small RNA Sequencing. Find out more information on Norgen’s NGS services
- Compatible with Streck Cell-Free RNA BCT® Tubes
- Purification is based on spin column chromatography that uses Norgen’s proprietary resin separation matrix
These kits provide a fast, reliable and convenient method to purify and concentrate high quality, high purity and inhibitor-free cell-free circulating and exosomal RNA using a convenient spin column method. These kits can purify RNA from fresh or frozen serum or plasma samples prepared from blood collected on either EDTA or Citrate. Plasma samples prepared from blood collected on heparin should not be used, as heparin can significantly interfere with many downstream applications such as RT-PCR. The purified plasma/serum RNA is fully compatible with all downstream applications including PCR, qPCR, methylation-sensitive reverse transcription qPCR, reverse transcription PCR, Northern blotting, RNase protection and primer extension, expression array assays, and NGS.
Background
Plasma/Serum cell-free circulating RNA or exosomal RNA has the potential to provide biomarkers for certain cancers and disease states. Exosomes are 40 – 150 nm membrane vesicles, which are secreted by most cell types. Exosomes can be found in saliva, blood, urine, amniotic fluid and malignant ascitic fluids, among other biological fluids. Evidence has been accumulating recently that these vesicles act as cellular messengers, conveying information to distant cells and tissues within the body. These exosomes may play a functional role in mediating adaptive immune responses to infectious agents and tumours, tissue repair, neural communication and transfer of pathogenic proteins. For this reason exosomal RNAs may serve as biomarkers for various diseases including cancer. As the RNA molecules encapsulated within exosomes are protected from degradation by RNAses they can be efficiently recovered from biological fluids, such as plasma or serum.
Plasma/Serum RNA Purification Mini Kit
This kit can purify RNA from fresh or frozen serum or plasma samples prepared from blood collected on either EDTA or Citrate, from volumes ranging from 50 µL to 200 µL. The purified plasma/serum RNA is eluted in a flexible final volume of 10 µL to 25 µL.
Plasma/Serum RNA Purification Midi Kit
This utilizes a two column method, and can purify RNA from fresh or frozen serum or plasma samples prepared from blood collected on either EDTA or Citrate, from volumes ranging from 250 µL to 1.5 mL. The first column will handle the large volume input of bodily fluids that is followed by a concentration on a mini column for a final elution of 50 µL to 100 µL.
Plasma/Serum RNA Purification Maxi Kit
This kit can purify RNA from fresh or frozen serum or plasma samples prepared from blood collected on either EDTA or Citrate, from volumes ranging from 2 mL to 5 mL. The first column will handle the large volume input of bodily fluids that is followed by a concentration on a mini column for a final elution of 50 µL to 100 µL.
Isolate RNA after Purifying EVs and Exosomes
For Ultracentrifugation, Exoquick, and Filtration
| Cat. # | Name | Elution Volume | Plasma/Serum | Urine | Cell-Culture Media |
|---|---|---|---|---|---|
| 55000 | Plasma/Serum RNA Purification Mini Kit | 10 – 25 µL | 50 µL – 1 mL | 250 µL – 1 mL | 5 – 10 mL |
| 35300 | Total RNA Purification Micro Kit | 20 – 50 µL | 1 – 4 mL | 2 – 10 mL | 10 – 20 mL |
| 17200 | Total RNA Purification Kit | 50 – 100 µL | 4 – 10 mL | 11 – 30 mL | 20 – 35 mL |
Details
Supporting Data
Figure 1 / 13
Click for expanded view
| Kit Specifications | |
| Sample Volume Range | 50 to 200 μL |
| Anti-coagulant (for Plasma)* | EDTA or Citrate |
| Size of RNA Purified | All sizes, including small RNA (< 200 nt) |
| Minimum Elution Volume | 10 μL |
| Maximum Elution Volume | 25 μL |
| Time to Complete 10 Purifications | 15-20 minutes |
| Average Yield** | Variable depending on specimen |
*This kit is suitable for the isolation of RNA from fresh or frozen serum or plasma prepared from blood collected on either EDTA or Citrate. Plasma samples prepared from blood collected on heparin should not be used as heparin can significantly interfere with many downstream applications such as RT-PCR.
**Please check page 7 for Average Plasma/Serum Yields and Common RNA Quantification Methods.
Storage Conditions and Product Stability
All solutions should be kept tightly sealed and stored at room temperature. This kit is stable for 2 years after the date of shipment. It is recommended to warm Lysis Buffer A for 20 minutes at 60°C if any salt precipitation is observed.
| Kit Components | Cat. 55000 (50 preps) | Cat. 56100 (20 preps) | Cat. 56200 (10 preps) |
|---|---|---|---|
| Lysis Buffer A | 2 x 20 mL | 100 mL | 1 x 130 mL 1 x 30 mL |
| Wash Solution A | 18 mL | 1 x 38 mL 1 x 18 mL | 38 mL |
| Elution Solution A | 6 mL | 6 mL | 6 mL |
| Elution Buffer F | – | 15 mL | 15 mL |
| Micro Spin Columns | 50 | – | – |
| Mini Spin Columns | – | 20 | 10 |
| Midi Spin Columns | – | 20 | – |
| Maxi Spin Columns | – | – | 10 |
| Collection Tubes | 50 | 20 | 10 |
| Elution Tubes (1.7 mL) | 50 | 20 | 10 |
| Product Insert | 1 | 1 | 1 |
