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Updated: May 16, 2026

Telomere Length and Telomerase Activity; A Yin and Yang of Cell Senescence
Published on: May 22, 2013
Real-time detection of telomerase activity using the exponential isothermal amplification of telomere repeat assay
1Department of Chemistry, The University of Chicago, 929 East 57th Street, Chicago, Illinois 60637, United States.
Abstract:
As crucial pieces in the puzzle of cancer and human aging, telomeres and telomerase are indispensable in modern biology. Here we describe a novel exponential isothermal amplification of telomere repeat (EXPIATR) assay--a sensitive, simple, and reliable in vitro method for measuring telomerase activity in cell extracts. Through a strategically designed path of nucleic acid isothermal amplifications, EXPIATR abandons the expensive thermal cycling protocol and achieves ultrafast detection: telomerase activity equivalent to a single HeLa cancer cell can be detected in ∼25 min.
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