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Single Cell Transcriptional Profiling of Adult Mouse Cardiomyocytes
Published on: December 28, 2011
PCR DNA-array profiling of DNA-binding transcription factor activities in adult mouse tissues
Yimin Sun1, Jing Cheng, Keith R Mitchelson
1CapitalBio Corporation, National Engineering Research Center for Beijing Biochip Technology, Beijing, China.
Methods in Molecular Biology (Clifton, N.J.)
|October 23, 2010
Summary
This study introduces an advanced oligonucleotide array-based transcription factor assay (OATFA) for parallel analysis of over 200 transcription factor (TF) activities in mice. OATFA reveals novel TF activities missed by bioinformatics, aiding the understanding of gene regulation.
Area of Science:
- Molecular Biology
- Genomics
- Bioinformatics
Background:
- Transcription factors (TFs) regulate gene expression by binding to DNA and interacting with other proteins.
- Bioinformatics models predict active TFs in specific tissues, but experimental validation is often lacking.
- Understanding TF activity is crucial for deciphering gene regulation in various biological contexts.
Purpose of the Study:
- To develop and validate a high-throughput method for parallel analysis of transcription factor activities.
- To experimentally identify transcription factor activities not predicted by bioinformatics approaches.
- To provide a comprehensive tool for revealing transcriptional systems in mammalian tissues.
Main Methods:
- Development of an oligonucleotide array-based transcription factor assay (OATFA) platform.
- Utilizing a PCR-based system to quantify DNA-TF complex levels.
- Employing microarray technology for signal detection and analysis.
- Confirmation of identified TF activities using antibody-ELISA.
Main Results:
- Parallel analysis of over 200 transcription factor proteins in mice.
- Identification of numerous TF activities that were not predicted by prior bioinformatics analysis.
- Demonstration of OATFA's capability to uncover novel TF functions.
- Successful experimental confirmation of newly identified TF activities.
Conclusions:
- The PCR-based OATFA microarray analysis is a comprehensive and effective method for assessing TF activities.
- OATFA can reveal previously unknown transcriptional systems and pathways in mammalian cells and tissues.
- This platform significantly advances the experimental validation of predicted TF functions and discovery of novel ones.
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