NRAS Pyro Kit

The NRAS Pyro Kit is used for quantitative measurements of mutations in codons 12, 13, and 61 of the human NRAS gene in real time using Pyrosequencing technology on the PyroMark Q24 System. The NRAS gene encodes a GTPase neuroblastoma RAS viral (v-ras) oncogene homolog. Mutations in NRAS are found in approximately 13–25% of all malignant melanomas, occurring frequently in codons 12, 13, and 61. These mutations results in the constitutive activation of NRAS signaling pathways.

The following mutations are detected:

• Codon 12/13: G12A, G12C, G12D, G12R, G12S, G12V, G13A, G13C, G13D, G13R, G13S, G13V
• Codon 61: Q61E, Q61H, Q61K, Q61L, Q61P, Q61R

After PCR using primers targeting codons 12/13 and codon 61, the amplicons are immobilized on Streptavidin Sepharose High Performance beads. Single-stranded DNA is prepared, and the corresponding sequencing primers anneal to the DNA. The samples are then analyzed on the PyroMark Q24 System using a run setup file and a run file. The "Sequence to Analyze" can be then adjusted for detection of rare mutations after the run (see figures "Pyrogram trace of a GGT to AGT mutation in base 1 of codon 12" and "Pyrogram trace of the reanalysis of the sample in the previous figure"). 

The NRAS Pyro Kit is used for the detection of mutations in codons 12, 13, and 61 of the human NRAS gene. The kit enables accurate, quantitative mutation analysis applicable to several fields of research, including cancer research and epigenetics.

The following mutations are detected:

• Codon 12: G12A, G12C, G12D, G12R, G12S, G12V
• Codon 13: G13A, G13C, G13D, G13R, G13S, G13V
• Codon 61: Q61E, Q61H, Q61K, Q61L, Q61P, Q61R