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Related Concept Videos

Proteomics01:33

Proteomics

A proteome is the entire set of proteins that a cell type produces. We can study proteomes using the knowledge of genomes because genes code for mRNAs, and the mRNAs encode proteins. Although mRNA analysis is a step in the right direction, not all mRNAs are translated into proteins.
Proteomics is the study of proteomes' function. It involves the large-scale systematic study of the proteome to denote the protein complement expressed by a genome. Scientist Mark Wilkins coined the term proteomics...
Ribosome Profiling02:24

Ribosome Profiling

Ribosome profiling or ribo-sequencing is a deep sequencing technique that produces a snapshot of active translation in a cell. It selectively sequences the mRNAs protected by ribosomes to get an insight into a cell’s translation landscape at any given point in time.
Applications of ribosome profiling
Ribosome profiling has many applications, including in vivo monitoring of translation inside a particular organ or tissue type and quantifying new protein synthesis levels.
The technique helps...

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Related Experiment Video

Updated: Jun 26, 2026

Mapping Dysfunctional Protein-Protein Interactions in Disease
09:39

Mapping Dysfunctional Protein-Protein Interactions in Disease

Published on: October 24, 2025

Prion disease diagnosis by proteomic profiling.

Allen Herbst1, Sean McIlwain, Joshua J Schmidt

  • 1Department of Comparative Biosciences, University of Wisconsin-Madison, Wisconsin 53705-222, USA.

Journal of Proteome Research
|January 13, 2009
PubMed
Summary

Researchers identified unique peptide profiles in cerebrospinal fluid (CSF) from prion-infected hamsters. This proteomic profiling shows promise for developing early diagnostics for prion diseases.

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A High Throughput, Multiplexed and Targeted Proteomic CSF Assay to Quantify Neurodegenerative Biomarkers and Apolipoprotein E Isoforms Status

Published on: October 20, 2016

Area of Science:

  • Neuroscience
  • Biochemistry
  • Proteomics

Background:

  • Prion diseases currently lack definitive in-vivo diagnostic methods.
  • Diagnosis relies on postmortem detection of abnormal prion proteins.

Purpose of the Study:

  • To identify proteomic biomarkers in cerebrospinal fluid (CSF) for prion disease detection.
  • To evaluate the diagnostic potential of MALDI-FTMS and SVM analysis of CSF peptides.

Main Methods:

  • Cerebrospinal fluid (CSF) from prion-infected and control hamsters was analyzed.
  • Matrix-assisted laser desorption/ionization Fourier transform mass spectrometry (MALDI-FTMS) was used for peptide profiling.
  • Support vector machines (SVM) were employed for classification and predictive modeling.

Main Results:

  • Distinct peptide profiles were identified in prion-diseased hamsters.
  • A predictive model achieved 72% accuracy with 73% true positive and 27% false positive rates.
  • Proteomic analysis of CSF demonstrated potential for disease diagnosis.

Conclusions:

  • Proteomic profiling of CSF shows promise as a diagnostic tool for prion diseases.
  • This approach could lead to the development of novel, non-invasive diagnostic markers.
  • Further research is warranted to validate these findings in clinical settings.