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Related Experiment Videos

Multiple transcription factor profiling by enzyme-linked immunoassay.

Z Shen1, J Peedikayil, G K Olson

  • 1BD Biosciences Clontech, Palo Alto, CA 94303, USA.

Biotechniques
|May 22, 2002
PubMed
Summary
This summary is machine-generated.

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We developed a sensitive enzyme-linked immunoassay to measure transcription factor-DNA interactions. This high-throughput method accurately quantifies key inflammatory transcription factors, offering a faster alternative to traditional assays.

Area of Science:

  • Molecular Biology
  • Biochemistry
  • Immunology

Background:

  • Transcription factor-DNA interactions are crucial for gene expression regulation.
  • Quantifying these interactions is vital for understanding cellular processes, particularly in inflammation.

Purpose of the Study:

  • To establish and validate a novel enzyme-linked immunoassay (ELISA) platform for quantifying specific transcription factor-DNA interactions.
  • To profile the binding of multiple transcription factors involved in inflammatory pathways.

Main Methods:

  • Developed an ELISA using dsDNA immobilized on 96-well plates to capture transcription factors from mammalian nuclear extracts.
  • Utilized transcription factor-specific antibodies for detection and quantification of DNA-bound factors.
  • Compared ELISA performance against the traditional electrophoretic mobility shift assay (EMSA).

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Main Results:

  • The ELISA platform successfully quantified transcription factor-DNA interactions.
  • Profiled several key inflammatory transcription factors, including NF-kappaB (p50, p65), c-Rel, c-Fos, CREB-1, and ATF-2.
  • Demonstrated a 10-fold increase in sensitivity compared to EMSA.

Conclusions:

  • The developed ELISA is a sensitive, rapid, and high-throughput method for quantifying transcription factor-DNA interactions.
  • This assay eliminates the need for radioactivity, making it safer and more accessible.
  • The platform is effective for profiling transcription factors involved in inflammation.