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Related Concept Videos

MALDI-TOF Mass Spectrometry01:19

MALDI-TOF Mass Spectrometry

Mass spectrometry is a powerful characterization technique that can identify and separate a wide variety of compounds ranging from chemical to biological entities, based on their mass-to-charge ratio (m/z). The instruments that allow this detection, known as mass spectrometers, have three components: an ion source, a mass analyzer, and a detector. These spectrometers differ based on the nature of their ion source and analyzers.Matrix-assisted laser desorption ionization (MALDI) is a commonly...
Peptide Identification Using Tandem Mass Spectrometry01:33

Peptide Identification Using Tandem Mass Spectrometry

Tandem mass spectrometry, also known as MS/MS or MS2, is an analytical technique that employs two mass analyzers. Essentially it is a series of mass spectrometers that helps isolate a particular biomolecule and then helps study its chemical properties.
This technique helps gather information regarding the protein from which the peptide was obtained and to study the peptides’ amino acid sequence. Identifying peptides from a complex mixture is an important component of the growing field of...
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...
Rapid Identification of Pathogens01:25

Rapid Identification of Pathogens

MALDI-TOF MS has transformed clinical microbiology by offering a rapid and reliable method for pathogen identification. The traditional approach to microbial identification typically involves time-consuming culture techniques and biochemical tests, which can delay the initiation of appropriate antimicrobial therapy. MALDI-TOF MS avoids these delays by using characteristic ribosomal protein mass patterns of microbial cells, enabling accurate species-level identification within minutes.Principle...

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A Streamlined Approach for Mass Spectrometry-Based Proteomics Using Selected Tissue Regions
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Published on: April 18, 2025

Clinical applications of proteomics: proteomic pattern diagnostics.

Emanuel E Petricoin1, Cloud P Paweletz, Lance A Liotta

  • 1FDA-NCI Clinical Proteomics Program, Division of Therapeutic Proteins, Center for Biologic Evaluation and Research, Food and Drug Administration, Bethesda, Maryland 20892, USA. petricoin@cber.fda.gov

Journal of Mammary Gland Biology and Neoplasia
|July 29, 2003
PubMed
Summary

Proteomic pattern diagnostics offer a revolutionary approach to early disease detection. This rapid, high-throughput method uses proteomic fingerprints for quick and accurate cancer identification.

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Area of Science:

  • Clinical proteomics
  • Biomarker discovery
  • Diagnostic technologies

Background:

  • Clinical proteomics applies proteomic technologies at the bedside.
  • Early disease detection is crucial for effective treatment and patient outcomes.

Purpose of the Study:

  • To introduce and evaluate proteomic pattern diagnostics for early disease detection.
  • To demonstrate a rapid, high-throughput approach for identifying disease-specific protein patterns.

Main Methods:

  • High-throughput mass spectrometry generates proteomic fingerprints from body fluids (e.g., serum, NAF).
  • Bioinformatic pattern recognition algorithms analyze these fingerprints to detect cancer-specific protein alterations.
  • The diagnostic process is completed in under a minute using minimal sample volumes.

Main Results:

  • Proteomic pattern diagnostics can discriminate between cancerous and healthy individuals.
  • The method is rapid, requiring less than 30 seconds for fingerprint generation.
  • The diagnostic approach relies on the pattern itself, not the identification of individual proteins.

Conclusions:

  • Proteomic pattern diagnostics represent a potentially revolutionary technology for early disease detection, surveillance, and monitoring.
  • This approach offers a rapid, sensitive, and minimally invasive method for identifying disease states.
  • The diagnostic power lies in the proteomic pattern, simplifying the diagnostic process.