ISSN:
0173-0835
Keywords:
Paramagnetic beads
;
Polymerase chain reaction
;
Polymorphism
;
Polyacrylamide gel electrophoresis
;
Variable number of tandem repeats
;
Chemistry
;
Biochemistry and Biotechnology
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Biology
,
Chemistry and Pharmacology
Notes:
Large variable number of tandemly repeated (VNTR) unit polymorphisms were identified by amplification of genomic DNA with appropriate primers, followed by agarose gel electrophoresis and ethidium bromide staining. However, when genomic DNA was extracted using paramagnetic beads, we found that the efficiency of polymerase chain reaction amplification of VNTR's was affected by the purity of the solid phase-eluted DNA. Here we report that VNTR's located in the human interleukin-1 receptor antagonist and interleukin-4 genes are clearly and reliably amplified only when more stringent conditions are used in order to obtain purer DNA eluates from DNA-bead complexes. In addition, polyacrylamide gel electrophoresis followed by silver staining is superior to ethidium bromide staining of agarose gels in visualizing the different allelic bands of heterozygous carriers.
Additional Material:
3 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/elps.1150170409
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