Selection and characterization of DNA aptamers against PrPSc

Ping Wang, Kristen L. Hatcher, Jason C. Bartz, Shu G. Chen, Pamela Skinner, Juergen Richt, Hong Liu, Srinand Sreevatsan

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Transmissible spongiform encephalopathies (TSEs) are a group of zoonotic and fatal neurodegenerative disorders that affect humans and animals. The pathogenesis of TSEs involves a conformational conversion of the cellular prion protein (PrP) into abnormal isoforms. Currently, cellular and pathological forms of PrP are differentiated using specific antibody-based analyses that are resource intensive and not applicable to all species and strains. Thus, there is an urgent need for sensitive and efficient assays that can detect pathological forms of PrP. Using systematic evolution of ligands by exponential enrichment, we developed DNA aptamers that can differentiate normal and abnormal PrP isoforms. These aptamers represent the first reagents that can identify pathological isoforms of PrP across multiple host species. Second, they are able to distinguish different strains of prions. Third, they can be used to detect prions in peripheral blood cells, which are otherwise undetectable using conventional antibody-based detection methods. Thus, DNA aptamers offer promise for the development of presymptomatic screens of tissue, blood and other body fluids for prion contamination.

Original languageEnglish
Pages (from-to)466-476
Number of pages11
JournalExperimental Biology and Medicine
Volume236
Issue number4
DOIs
StatePublished - Apr 2011

Fingerprint

Nucleotide Aptamers
Prions
Protein Isoforms
Prion Diseases
Blood
SELEX Aptamer Technique
Antibodies
Body fluids
Zoonoses
Body Fluids
Neurodegenerative Diseases
Assays
Blood Cells
Animals
Contamination
Cells
Prion Proteins
Tissue
Ligands

All Science Journal Classification (ASJC) codes

  • Biochemistry, Genetics and Molecular Biology(all)
  • Medicine(all)

Cite this

Wang, P., Hatcher, K. L., Bartz, J. C., Chen, S. G., Skinner, P., Richt, J., ... Sreevatsan, S. (2011). Selection and characterization of DNA aptamers against PrPSc. Experimental Biology and Medicine, 236(4), 466-476. https://doi.org/10.1258/ebm.2011.010323

Selection and characterization of DNA aptamers against PrPSc. / Wang, Ping; Hatcher, Kristen L.; Bartz, Jason C.; Chen, Shu G.; Skinner, Pamela; Richt, Juergen; Liu, Hong; Sreevatsan, Srinand.

In: Experimental Biology and Medicine, Vol. 236, No. 4, 04.2011, p. 466-476.

Research output: Contribution to journalArticle

Wang, P, Hatcher, KL, Bartz, JC, Chen, SG, Skinner, P, Richt, J, Liu, H & Sreevatsan, S 2011, 'Selection and characterization of DNA aptamers against PrPSc', Experimental Biology and Medicine, vol. 236, no. 4, pp. 466-476. https://doi.org/10.1258/ebm.2011.010323
Wang, Ping ; Hatcher, Kristen L. ; Bartz, Jason C. ; Chen, Shu G. ; Skinner, Pamela ; Richt, Juergen ; Liu, Hong ; Sreevatsan, Srinand. / Selection and characterization of DNA aptamers against PrPSc. In: Experimental Biology and Medicine. 2011 ; Vol. 236, No. 4. pp. 466-476.
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