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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...

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Related Experiment Video

Updated: Jun 23, 2026

Nanosensors to Detect Protease Activity In Vivo for Noninvasive Diagnostics
10:50

Nanosensors to Detect Protease Activity In Vivo for Noninvasive Diagnostics

Published on: July 16, 2018

Microarrays for protease detection in tissues and cells.

Kamiar Moin1, Donald Schwartz, Stefanie R Mullins

  • 1Department of Pharmacology, Wayne State University, 540 E. Canfield, Detroit, MI, USA.

Methods in Molecular Biology (Clifton, N.J.)
|April 21, 2009
PubMed
Summary

A new dual-species microarray chip (Hu/Mu ProtIn) profiles human and mouse proteases and inhibitors. This tool helps identify cell-specific protease origins, crucial for developing targeted cancer therapies and understanding tumor microenvironments.

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Area of Science:

  • Biochemistry
  • Molecular Biology
  • Cancer Research

Background:

  • Protease and protease inhibitor expression is critical for understanding cellular functions, especially in cancer.
  • Identifying the cellular origin of proteases in the tumor microenvironment is essential for effective cancer therapy development.
  • Existing methods for transcript-level analysis often lack the specificity to distinguish between human and mouse transcripts in xenograft models.

Purpose of the Study:

  • To develop a custom microarray chip for simultaneous profiling of human and mouse proteases, protease inhibitors, and their interactors.
  • To validate the chip's ability to accurately identify and differentiate transcripts from both species in single and dual-species specimens.
  • To demonstrate the utility of the chip in identifying specific host proteases involved in tumor development.

Main Methods:

  • Development of a custom, single-platform, dual-species microarray chip (Hu/Mu ProtIn) in partnership with Affymetrix.
  • Validation of the Hu/Mu ProtIn chip for identifying human and mouse transcripts in single-species samples.
  • Application of the chip to analyze dual-species specimens, such as xenografts, to distinguish between human and mouse gene expression.

Main Results:

  • The Hu/Mu ProtIn chip successfully identified and differentiated human and mouse transcripts in both single and dual-species specimens.
  • The chip enabled the identification of specific mouse proteases within lung tumor xenografts.
  • The study successfully outlined a protocol for utilizing the Hu/Mu ProtIn chip for comprehensive proteomic profiling.

Conclusions:

  • The Hu/Mu ProtIn chip is a validated tool for dual-species transcriptomic profiling of proteases and protease inhibitors.
  • This technology is crucial for understanding the cellular origins of proteases in complex biological systems like tumor microenvironments.
  • The chip facilitates the discovery of host-derived molecules, such as protective proteases in lung tumor development, paving the way for novel therapeutic strategies.