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Published on: June 2, 2021
Chromatin Immunoprecipitation in Aspergillus fumigatus
Sanjoy Paul1, Mark A Stamnes1, W Scott Moye-Rowley2
1Department of Molecular Physiology and Biophysics, Carver College of Medicine, University of Iowa, Iowa City, IA, USA.
Abstract:
Aspergillus fumigatus is the major human filamentous fungal pathogen. While its importance as a pathogen is well-appreciated, our understanding of its biology is still at an early stage. One valuable area of study has been the analysis of gene expression in A. fumigatus. Dissection of the transcriptional circuits that control drug resistance and virulence in this fungus has been facilitated by the use of chromatin immunoprecipitation (ChIP), an approach pioneered in the mid-1980s. The use of ChIP coupled with next-generation sequencing (ChIP-seq) allows the determination of the genomic binding sites of a transcription factor of interest. Here, we describe the application of ChIP in A. fumigatus and detail different approaches to appropriately shear chromatin from this organism. This sheared chromatin can be used for analysis of factor association with single genes by qPCR or for downstream ChIP-seq applications.
Insights
This study details chromatin immunoprecipitation (ChIP) methods for Aspergillus fumigatus, a key fungal pathogen. These techniques enable the analysis of gene expression, aiding research into drug resistance and virulence factors.
Area of Science:
- Mycology
- Molecular Biology
- Genetics
Background:
- Aspergillus fumigatus is a significant human fungal pathogen.
- Understanding its biology, particularly gene expression, is crucial for combating infections.
- Chromatin immunoprecipitation (ChIP) is a valuable tool for studying gene regulation.
Purpose of the Study:
- To describe the application of ChIP in Aspergillus fumigatus.
- To detail methods for chromatin shearing in this fungus.
- To enable downstream analysis of transcription factor binding sites.
Main Methods:
- Application of chromatin immunoprecipitation (ChIP) in Aspergillus fumigatus.
- Development of specific chromatin shearing techniques for fungal cells.
- Utilizing qPCR for single-gene factor association analysis.
- Preparing sheared chromatin for ChIP-sequencing (ChIP-seq) applications.
Main Results:
- Established ChIP protocols applicable to Aspergillus fumigatus.
- Optimized methods for preparing fungal chromatin for immunoprecipitation.
- Demonstrated the utility of ChIP for analyzing transcription factor binding in A. fumigatus.
Conclusions:
- ChIP is an effective method for studying gene expression in Aspergillus fumigatus.
- The described methods facilitate the dissection of transcriptional circuits.
- This work supports further research into fungal virulence and drug resistance mechanisms.
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