Related Experiment Videos
Characterization of monoclonal antibodies specific to the transcription factor ETS-2 protein
Elaine Sanij1, Bernadette Scott, Trevor Wilson
1Centre for Functional Genomics and Human Disease, Monash Institute of Reproduction and Development, Monash University, Clayton, Vic. 3168, Australia.
Abstract:
ETS-2 is a member of the ETS family of transcription factors. ETS-2 was initially characterized as a nuclear oncogene and has been shown to play a role in regulation of apoptosis and cell cycle progression. Members of the ETS family display high sequence homology, thus, there is considerable controversy concerning the specificity of existing ETS-2 polyclonal antibodies that have been used to define ETS-2 function. We therefore embarked on the production of ETS-2 specific monoclonal antibodies. In this report, we describe the production and characterization of six antibodies and the localization of their target epitopes to distinct domains of the ETS-2 protein. Four antibodies are ETS-2 specific and two antibodies cross-react with ETS-1, an ETS family member with the highest amino acid sequence homology to ETS-2. This report provides a comprehensive evaluation of ETS-2 specific monoclonal antibodies verified using ETS-2 null cells. These antibodies can be used for EMSA, Western blotting, immunoprecipitation and immunofluorescence staining experiments. Collectively, these reagents are invaluable molecular tools that should help better understand the biological function of ETS-2.
Insights
Researchers developed specific monoclonal antibodies for ETS-2 (E26 transformation-specific sequence) to address specificity issues with existing tools. These validated antibodies are crucial for accurately studying ETS-2
Area of Science:
- Molecular Biology
- Oncology
- Immunology
Background:
- ETS-2 is a transcription factor involved in apoptosis and cell cycle regulation.
- High sequence homology within the ETS family leads to antibody specificity concerns.
- Existing polyclonal antibodies for ETS-2 lack verified specificity, hindering functional studies.
Purpose of the Study:
- To produce and characterize novel monoclonal antibodies specific to ETS-2.
- To validate the specificity of these antibodies using ETS-2 null cells.
- To provide reliable tools for investigating ETS-2's biological functions.
Main Methods:
- Production of six monoclonal antibodies against ETS-2.
- Epitope mapping to determine antibody binding sites on ETS-2.
- Specificity validation using ETS-2 null cells and cross-reactivity testing with ETS-1.
Main Results:
- Four of the six generated antibodies demonstrated ETS-2 specificity.
- Two antibodies showed cross-reactivity with ETS-1, a highly homologous family member.
- Antibodies were validated for use in EMSA, Western blotting, immunoprecipitation, and immunofluorescence.
Conclusions:
- Development of a panel of specific monoclonal antibodies for ETS-2.
- These antibodies provide reliable reagents for accurate ETS-2 research.
- Enhanced understanding of ETS-2's biological roles is facilitated by these molecular tools.