Rapid Screening of Mutant N-ras Alleles by Analysis of PCR-Induced Restriction Sites: Allele Specific Restriction Analysis (ASRA).

Abstract:

:We have developed a rapid screening method for analysis of codon 12, 13 and 61 N-ras gene mutations, since these mutations have been observed in approximately 25% of patients with acute myeloid leukemia and myelodysplastic syndromes. The method, termed allele specific restriction analysis (ASRA), involves polymerase chain reaction amplification of DNA or RNA using a mismatched primer which introduces appropriately positioned base substitutions in N-ras and creates a restriction site provided the adjacent sequence is normal. Simultaneous analysis of codons 12 and 61 is also possible by the use of a multiprimer reaction mixture. Resistance of the amplified product to digestion indicates the presence of a mutation in the original template. Since ASRA allows simultaneous analysis of mutant and wild type sequences in DNA and RNA, an estimate of the ratio of gene copies and relative expression of N-ras alleles can be obtained for heterozygous individuals.

journal_name

Leuk Lymphoma

journal_title

Leukemia & lymphoma

authors

Todd AV,Iland HJ

doi

10.3109/10428199109107917

subject

Has Abstract

pub_date

1991-01-01 00:00:00

pages

293-300

issue

4

eissn

1042-8194

issn

1029-2403

journal_volume

3

pub_type

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