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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...
DNA Microarrays02:34

DNA Microarrays

Microarrays are high-throughput and relatively inexpensive assays that can be automated to analyze large quantities of data at a time. They are used in genome-wide studies to compare gene or protein expression under two varied conditions, such as healthy and diseased states. Microarrays consist of glass or silica slides on which probe molecules are covalently attached through surface functionalization. Most commonly, the slides are prepared through the chemisorption of silanes to silica...
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

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Generation of Two-color Antigen Microarrays for the Simultaneous Detection of IgG and IgM Autoantibodies
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Published on: September 15, 2016

Probing the mRNA processing body using protein macroarrays and "autoantigenomics".

Wei-Hong Yang1, Donald B Bloch

  • 1Center for Immunology and Inflammatory Diseases of the General Medical Services, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts 02129, USA.

RNA (New York, N.Y.)
|March 7, 2007
PubMed
Summary

Researchers identified new components of messenger RNA processing bodies (P-bodies) using autoantibodies from patients. Y-box protein 1 (YB-1) was found to be a novel P-body component with distinct stress responses.

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Area of Science:

  • Cell Biology
  • Molecular Biology
  • Immunology

Background:

  • Messenger RNA processing bodies (P-bodies) are crucial for mRNA degradation and gene silencing.
  • The precise composition and organization of P-bodies remain incompletely understood.
  • Autoantibodies against P-bodies are found in some patients with primary biliary cirrhosis.

Purpose of the Study:

  • To identify novel components of P-bodies using autoantibodies and protein macroarray technology.
  • To characterize the behavior of identified P-body components, particularly Y-box protein 1 (YB-1), under cellular stress.

Main Methods:

  • Screening of a protein macroarray using serum from patients with anti-P-body autoantibodies.
  • Immunological validation of identified autoantigens.
  • Confocal microscopy to assess the colocalization and dynamic localization of proteins in P-bodies and stress granules.

Main Results:

  • Identified 67 potential autoantigens, including four known P-body components and three additional primary biliary cirrhosis autoantigens.
  • Discovered Y-box protein 1 (YB-1) as a novel P-body component, recognized by patient autoantibodies.
  • Observed differential localization and stress-induced translocation of YB-1 and RAP55 between P-bodies and stress granules.

Conclusions:

  • Protein macroarray technology combined with human autoantibodies is a powerful approach for discovering and characterizing P-body constituents.
  • YB-1 exhibits distinct dynamic behavior compared to other P-body components like RAP55 during oxidative stress, suggesting diverse functional roles.