High-throughput analysis of telomerase by capillary electrophoresis

Donald H. Atha, Karen Miller, Anita D. Sanow, Jingfan Xu, Jennifer L. Hess, Osmond C. Wu, Wendy Wang, Sudhir Srivastava, W Edward Jr. Highsmith

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

The enzyme telomerase is expressed in (85-90)% of all human cancers, but not in normal, non-stem cell somatic tissues. Clinical assays for telomerase in easily obtained body fluids would have great utility as noninvasive, cost-effective methods for the early detection of cancer. The most commonly used method for the detection and quantification of telomerase enzyme activity is the polymerase chain reaction (PCR)-based assay known as the telomerase repeat amplification protocol or TRAP assay. Most of the TRAP assay systems use a slab-gel based electrophoresis system to size and quantify the PCR-amplified extension products. We are developing high-throughput capillary electrophoresis (CE) methods for the analysis of TRAP/PCR products. The TRAP assay was conducted on lysates of the human lung cancer cell line A-549 in reactions containing 5-100 cells. TRAP/PCR products were generated using a fluorescent primer and analyzed on the Applied Biosystems Model 310 CE system using POP4™ polymer. After analysis with GeneScan™ and Genotyper™ software, the total peak areas of the TRAP ladder extension products were computed using Microsoft Excel™. Results were compared with unlabeled TRAP/PCR products analyzed on the Bio-Rad BioFocus 3000 CE system using 6% high molecular weight polyvinylpyrrolidone (HMW PVP) polymer and SYBR™ Green I dye. Both CE systems were able to resolve the TRAP ladder products with high reproducibility and sensitivity (5-15 cells). With the appropriate robotic sample handling system, these CE methods would enable performing the telomerase TRAP assay with increased sensitivity, reproducibility and automation over slab-gel methods.

Original languageEnglish (US)
Pages (from-to)109-114
Number of pages6
JournalElectrophoresis
Volume24
Issue number1-2
StatePublished - Jan 2003
Externally publishedYes

Fingerprint

Capillary electrophoresis
Telomerase
Capillary Electrophoresis
Polymerase chain reaction
Assays
Throughput
Polymerase Chain Reaction
Reaction products
Ladders
Polymers
Gels
Povidone
Cells
Automation
Robotics
Body Fluids
Enzymes
Early Detection of Cancer
Body fluids
Enzyme activity

Keywords

  • Capillary electrophoresis
  • Telomerase

ASJC Scopus subject areas

  • Clinical Biochemistry

Cite this

Atha, D. H., Miller, K., Sanow, A. D., Xu, J., Hess, J. L., Wu, O. C., ... Highsmith, W. E. J. (2003). High-throughput analysis of telomerase by capillary electrophoresis. Electrophoresis, 24(1-2), 109-114.

High-throughput analysis of telomerase by capillary electrophoresis. / Atha, Donald H.; Miller, Karen; Sanow, Anita D.; Xu, Jingfan; Hess, Jennifer L.; Wu, Osmond C.; Wang, Wendy; Srivastava, Sudhir; Highsmith, W Edward Jr.

In: Electrophoresis, Vol. 24, No. 1-2, 01.2003, p. 109-114.

Research output: Contribution to journalArticle

Atha, DH, Miller, K, Sanow, AD, Xu, J, Hess, JL, Wu, OC, Wang, W, Srivastava, S & Highsmith, WEJ 2003, 'High-throughput analysis of telomerase by capillary electrophoresis', Electrophoresis, vol. 24, no. 1-2, pp. 109-114.
Atha DH, Miller K, Sanow AD, Xu J, Hess JL, Wu OC et al. High-throughput analysis of telomerase by capillary electrophoresis. Electrophoresis. 2003 Jan;24(1-2):109-114.
Atha, Donald H. ; Miller, Karen ; Sanow, Anita D. ; Xu, Jingfan ; Hess, Jennifer L. ; Wu, Osmond C. ; Wang, Wendy ; Srivastava, Sudhir ; Highsmith, W Edward Jr. / High-throughput analysis of telomerase by capillary electrophoresis. In: Electrophoresis. 2003 ; Vol. 24, No. 1-2. pp. 109-114.
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