Measurement of telomere DNA content by dot blot analysis.

Abstract:

:Telomeres play a central role in human cancer, cardiovascular aging and possibly longevity. However, present methods to measure telomere length are fraught with shortcomings that limit their use. Here, we describe a novel method to measure the relative telomere DNA content by dot blot analysis. In each dot, the DNA content is measured by a DNA stain (Dx) and the telomeric DNA content is measured with a telomeric probe (T). The T normalized for Dx (T/Dx) of each dot is a measure of telomere content. The method requires ∼20 ng of DNA per assay. Moreover, the T/Dx data are highly correlated linearly with mean telomere lengths derived from Southern blots of the terminal restriction fragments (r > 0.96, P < 0.0001). The method is also simple to use, has a relatively low interassay coefficient of variation (<6%), retains its precision in moderately degraded DNA and can be forged for high throughput analysis. The method might help researchers and clinicians alike in understanding risks for and extent of human diseases.

journal_name

Nucleic Acids Res

journal_title

Nucleic acids research

authors

Kimura M,Aviv A

doi

10.1093/nar/gkr235

subject

Has Abstract

pub_date

2011-07-01 00:00:00

pages

e84

issue

12

eissn

0305-1048

issn

1362-4962

pii

gkr235

journal_volume

39

pub_type

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