Objective. It has been stated that brain cancers are an increasingly serious issue in many parts of the world. The aim of our study was to determine a possible relationship between Vitamin D receptor (VDR) gene polymorphisms and the risk of glioma and meningioma. Methods. We investigated the VDR Taq-I and VDR Fok-I gene polymorphisms in 100 brain cancer patients (including 44 meningioma cases a...

Genomic DNA isolated from archived paraffin-embedded tissues (PETs) has important applicability in genetic epidemiological studies. To determine the accuracy of the sequence data, using DNA derived from PET among patients with known mutations characterized from blood, we conducted a blinded factorial experiment to simultaneously examine the influence of mutation type, age of the PET, PCR produc...

The TaqMan® SNP genotyping technology utilizes the 5’ nuclease activity of Taq polymerase to generate a fluorescent signal during PCR. For each SNP, the assay uses two TaqMan probes that differ in sequence only at the SNP site, with one probe complementary to the wild-type allele and the other to the variant allele. The technique utilizes the FRET technology whereby a 5’ reporter dye and a 3’ q...

We describe a rapid nonradioactive, double-stranded phage DNA sequencing method using ∆Taq DNA polymerase in cycle reaction for phage peptide-display library screening. This procedure is specific, rapid, sensitive and safe for the sequencing of large numbers of phage peptide-display colonies. In addition, thermal cycle sequencing with this chemiluminescent image detection protocol provides an i...

PCR Conditions: The PCR reaction is carried out in a total volume of 50 /*1 containing approximately 250 ng DNA, 2 units Taq DNA polymerase, 50 pmol of each primer, 200 /M dNTP's, 10 mM Tris-HCl pH 8.3, 50 mM KC1, 1.5 mM MgCl2, 0.001% gelatin. The amplification is performed for 30 cycles with an annealing temperature of 60°C. The amplified product is digested with TaqI and the DNA fragments are...

MATERIALS Taq DNA polymerase Marker DNA As a reference, use single-stranded DNA from the original bacteriophage M13 recombinant. MgCl2 (25 mM) Oligonucleotide primers The oligonucleotides should be 20-24 nucleotides in length, specific for the target DNA sequences, free of potential secondary structures, and contain no less than 10 and no more than 15 G and C residues. Yeast colony PCR buffer, ...