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Prion Diseases pp 183-196 | Cite as

Analysis of Charge Isoforms of the Scrapie Prion Protein Using Two-Dimensional Electrophoresis

  • Elizaveta Katorcha
  • Ilia V. BaskakovEmail author
Protocol
  • 368 Downloads
Part of the Neuromethods book series (NM, volume 129)

Abstract

Recent years witnessed extraordinary rise of interest to sialylation and, specifically, to its role in host–pathogen interactions. Prions or PrPSc are proteinaceous infectious agents that consist of misfolded, aggregated, self-replicating states of a sialoglycoprotein called the prion protein or PrPC. Prions are not conventional pathogens. Nevertheless, due to sialylation of N-linked glycans, prions may use mechanisms similar to those exploited by microbial or viral pathogens in invading a host. Recent studies revealed that sialylation of PrPSc controls prion infectivity, replication rate, and strain-specific glycoform ratios. As such, sialylation is of paramount importance to prion pathogenesis. For assessing sialylation status of PrPSc, we developed reliable protocol that involves two-dimensional electrophoresis followed by Western blot (2D). The current chapter describes the procedure for analysis of sialylation status of PrPSc from various sources including brain, spleen, cultured cells, or Protein Misfolding Cyclic Amplification using 2D.

Key words

Prion diseases Prion proteins Two-dimensional electrophoresis Sialylation Sialic acid Glycosylation 

Notes

Acknowledgments

This work was supported by the National Institute of Health grant R01 NS045585.

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Copyright information

© Springer Science+Business Media LLC 2017

Authors and Affiliations

  1. 1.Department of Anatomy and Neurobiology, Center for Biomedical Engineering and TechnologyUniversity of Maryland School of MedicineBaltimoreUSA

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