Cell Line Authentication

An estimated 15–20% of the time, cells used in experiments have been misidentified or cross-contaminated with another cell line. This creates problems for data quality and can waste precious time, resources and reagents in the laboratory. STR analysis has become the preferred technology for rapidly authenticating cell lines. Promega offers several products to help you with cell line authentication including: Cell ID™ System, StemElite™ System and the PowerPlex® 1.2 System.

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Data showing an HEK293 cell line with 29% HeLa Cell contamination. See Cell Notes Issue 22 for more information

Stem Elite™ ID System

The StemElite™ ID System provides the reagents required for successful and simple identification and authentication of human cell lines and detection of intra-species cell line cross-contamination. The StemElite™ ID System uses short tandem repeat (STR) analysis of specific loci in the human genome through co-amplification and three-color detection of ten loci (nine STR loci and Amelogenin for gender identification). Additionally, the StemElite™ ID System incorporates a sensitive marker that specifically detects the presence of DNA from mouse (Mus musculus). All eleven loci are amplified simultaneously in a single tube.

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Allele ranges for the Cell ID™ System. See protocol TM074 for details.

Cell ID™ System

The Cell ID™ System allows coamplification and three-color detection of nine human loci. The system offers the convenience of room-temperature reaction assembly by including a hot-start Taq DNA polymerase system in a 5X enzyme mix. This allows a simple, one-step addition of Taq DNA polymerase, dNTPs, MgCl2 and reaction buffer necessary for DNA amplification.

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PowerPlex® 1.2 System

The PowerPlex® 1.2 System allows the co-amplification and two-color detection of nine loci (eight STR loci and Amelogenin). The PowerPlex® 1.2 System contains D16S539, D7S820, D13S317 and D5S818 primers labeled with fluorescein and CSF1PO, TPOX, TH01 and vWA primers labeled with carboxy-tetramethylrhodamine (TMR) (Cat.# DC6170), as well as the fluorescent GenePrint® Sex Identification System—Amelogenin (TMR) (Cat.# DC6171). All nine loci are amplified simultaneously in a single tube and analyzed in a single gel lane or capillary injection. The PowerPlex® 1.2 System is designed specifically for use with the ABI PRISM® 310 and 3100 genetic analyzers and ABI PRISM® 377 DNA sequencer. When using the ABI PRISM® 3100 Genetic Analyzer, use the PowerPlex® Matrix Standards, 3100—Custom (Cat.# X3121) for spectral calibration. Learn more...