Reproducible, High Yields with chemagic™ Automated or Manual Purification of Circulating Cell Free DNA
Circulating cell free DNA (cfDNA) in body fluids is being used for noninvasive, real-time biomarker research and more. Yet detection is often challenged by its low levels, fragmentation and preanalytical variabilities introduced by sample collection, plasma preparation, and nucleic acid purification.
PerkinElmer chemagen cfDNA extraction kits, together with dedicated chemagen instruments rely on patented chemagicTM technology using M-PVA Magnetic beads to ensure a high quality of nucleic acid purification. Comparable yields to manual spin column methods were obtained with efficient removal of contaminants and exclusion of cross-contamination. With automation, variabilities associated with multiple handling steps are reduced and sample integrity maintained with full sample tracking capabilities.
Benefits of automated cfDNA isolation with chemagicTM technology:
- Higher reproducibility and comparable yields to manual methods
- Fast, automated workflow with on-board lysis and no heating required
- Wide range of sample inputs applicable from 0.5 to 18 ml
- Full sample tracking with barcode reading and bidirectional LIMS communication capability
- Ability to isolate viral nucleic acids
- Suitable for fresh or frozen plasma/serum from EDTA, citrate or Streck® Cell-free DNA BCT® tubes
- Downstream compatibility with various assays - ddPCR, NGS, qPCR etc.
- Compatibility with other automated PerkinElmer systems
“The PerkinElmer cfDNA extraction kit on the chemagic 360 platform has greatly reduced the hands-on time needed for sample preparation. It has also given us improved cfDNA yields compared to the current, manual approach used in our laboratory and enabled significantly higher throughput. The ease-of-use of the system is high and has made it easy for us to rapidly train our staff and implement the approach in our day-to-day practice.”
Veli-Mikko Puupponen, CEO, BiopSense Oy/Ltd, Finland
Looking for a Manual Option?
If you do not have a chemagicTM instrument but would like to benefit from the advantage of chemagicTM M-PVA Magnetic Bead technology, the manual chemagicTM cfDNA 5k kit is now available. Process up to 5 ml of sample and avoid spillages and clogs linked to spin column or vacuum-based systems with an easy magnetic bead-based protocol.
Manual cfDNA Extraction with chemagic™ cfDNA 5k kit”
- 40 preps
- 1-5 ml plasma/serum input
- 30-100 µl elution volume
- 60-90 minutes processing time
Additional magnetic racks required, see Product Overview for Manual DNA Isolation for details
Product overview for Automated cfDNA isolation
*Additional accessories required: 3 quantity chemagic 13 mL Double Bottom Rack H24 (art. No. CMG-13005340)
Plasma Preparation Protocol
Best Practices in cfDNA Purification
Sample Collection & Plasma Preparation
To avoid contamination of cfDNA with genomic DNA from ruptured blood cells, it is recommended to prepare plasma as fresh as possible (within 24h after blood draw for EDTA tubes or longer for specialized cell free blood collection tubes, refer to tube manufacturer).
A double centrifugation protocol during plasma preparation is recommended to minimize the potential carry over of cells and genomic DNA (refer to tube manufacturer for max. centrifugation speeds). Special care should be taken to avoid transfer of any other blood components (buffy coat or red blood cells) when separating the plasma fraction.
From 10 ml of whole blood, approximately 4 - 5 ml plasma can be expected. For a guidance on how to prepare plasma for cfDNA analysis, please refer to manuals below.
cfDNA yields isolated from human plasma samples are typically in the range of 1 - 30 ng/mL of plasma and therefore critically low and maybe outside the detection parameters determined by spectrophotometric methods. If quantification of the extracted cfDNA is required, a PCR-based method (qPCR, ddPCR) is recommended. Quantification based on fluorometric, or fragment analysis systems may lead to varying results dependent on various factors. Please refer to manuals for more details.
|Catalog No.||Kit Name||PDF Protocol|
|CMG-134||chemagic™ cfDNA 5k Kit (manual)||Protocol CMG-134 chemagic cfDNA 5k Kit|
|CMG-1304||chemagic™ cfDNA 5k Kit H24||Protocol CMG-1304 chemagic cfDNA 5k Kit H24|
|CMG-1302||chemagic™ cfDNA 2k Kit H24||Protocol CMG-1302 chemagic cfDNA 2k Kit H24|
|CMG-1396||chemagic™ cfDNA 1.5k Kit H96||Protocol CMG-1396 chemagic cfDNA 1.5k Kit H96|
|CMG-1310||chemagic™ cfDNA 10k Kit H24||Protocol CMG-1310 chemagic cfDNA 10k Kit H24|
Application Notes and Publications
Lefèvre AC, Pallisgaard N, Kronborg C, Wind KL, Krag SRP, Spindler KG. The Clinical Value of Measuring Circulating HPV DNA during Chemo-Radiotherapy in Squamous Cell Carcinoma of the Anus. Cancers (Basel). 2021 May 18;13(10):2451.
Yu J, Cho E, Choi J, Lim JE, Lee J, Kang M, Sung HH, Jeong BC, Seo SI, Jeon SS, Lee HM, Jeon HG. Genomic mutation profiling using liquid biopsy in Korean patients with prostate cancer: Circulating tumor DNA mutation predicts the development of castration resistance. Investig Clin Urol. 2021 Mar;62(2):224-232.
Moon SM, Kim JH, Kim SK, Kim S, Kwon HJ, Bae JS, Lee S, Lee HS, Choi MY, Jeon BH, Jeong BH, Lee K, Kim HK, Kim J, Um SW. Clinical Utility of Combined Circulating Tumor Cell and Circulating Tumor DNA Assays for Diagnosis of Primary Lung Cancer. Anticancer Res. 2020 Jun;40(6):3435-3444.
For research use only. Not for use in diagnostic procedures.