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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...
Confocal Fluorescence Microscopy01:16

Confocal Fluorescence Microscopy

Confocal microscopy is an advanced microscopic technique. The prime advantage of the confocal microscope over other microscopy techniques is its ability to block the out-of-focus light from the illuminated samples using pinholes. It is widely used with fluorescence optics to obtain high-resolution, sharp contrast images. Unlike optical microscopes, confocal microscopes use a focused beam of light laser to scan the entire sample surface at different z-planes. These microscopes are, therefore,...

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Related Experiment Video

Updated: Jul 7, 2026

Laser Capture Microdissection of Mammalian Tissue
16:34

Laser Capture Microdissection of Mammalian Tissue

Published on: October 1, 2007

Combining laser capture microdissection and proteomics techniques.

Dana Mustafa1, Johan M Kros, Theo Luider

  • 1Department of Pathology, Josephine Nefkens Institute, Erasmus Medical Center, Rotterdam, The Netherlands.

Methods in Molecular Biology (Clifton, N.J.)
|February 22, 2008
PubMed
Summary
This summary is machine-generated.

Laser microdissection (LM) isolates pure cells for DNA, RNA, and proteomics. This technique, combined with mass spectrometry, identifies specific proteins in tissues, even from small cell samples.

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Laser Microdissection-Based Protocol for the LC-MS/MS Analysis of the Proteomic Profile of Neuromelanin Granules

Published on: December 16, 2021

Area of Science:

  • Proteomics
  • Cell Biology
  • Biotechnology

Background:

  • Laser microdissection (LM) is a key technique for isolating pure cell populations from complex biological tissues.
  • Microdissected cells are valuable for DNA and RNA studies, and increasingly for proteomic analysis.
  • Combining LM with mass spectrometry (MS) enables the identification of cell-type-specific proteins and alterations.

Purpose of the Study:

  • To review methods for targeting specific cell populations using laser microdissection.
  • To discuss the subsequent proteomic analysis of these isolated cells.
  • To highlight the potential of LM-based proteomics for identifying differentially expressed proteins.

Main Methods:

  • Laser capture microdissection (LCM) for precise cell isolation from tissue sections.
  • Mass spectrometry (MS) techniques for proteomic analysis of limited cell samples.
  • Statistical and bioinformatics approaches for analyzing proteomic data from small cell numbers.

Main Results:

  • Proteomic analysis of 100-200 cells is feasible with advanced mass spectrometry.
  • LM-based proteomics can identify significant differentially expressed proteins in target tissues.
  • While not yet genome-wide, the approach offers valuable insights into tissue-specific and disease-related proteomes.

Conclusions:

  • Laser microdissection coupled with mass spectrometry is a powerful approach for cell-specific proteomics.
  • This technique facilitates the discovery of proteins relevant to specific cell types and disease states.
  • Further development and validation are crucial for comprehensive proteome representation.