Related Experiment Videos
Using DNA microarray to study human cytomegalovirus gene expression
Shaojun Yang1, Saleena Ghanny, Weijia Wang
1Department of Microbiology and Molecular Genetics, New Jersey Medical School, UMDNJ, International Center for Public Health, 225 Warren Street, Newark, NJ 07103-1709, USA.
Journal of Virological Methods
|October 18, 2005
Summary
This study developed a DNA microarray to measure human cytomegalovirus (HCMV) gene expression. The microarray accurately detected viral transcripts, showing high reproducibility for studying HCMV infections.
Area of Science:
- Genomics
- Virology
- Molecular Biology
Background:
- DNA microarray technology is crucial for functional genomics and studying host-pathogen interactions.
- Understanding viral gene expression is key to deciphering viral infections.
Purpose of the Study:
- To develop an oligonucleotide microarray for comprehensive human cytomegalovirus (HCMV) gene expression analysis.
- To establish a protocol for simultaneous measurement of all HCMV genes.
- To evaluate the performance and reproducibility of the developed HCMV microarray.
Main Methods:
- Designed an oligonucleotide microarray representing all predicted open reading frames of HCMV.
- Developed and applied a protocol for measuring HCMV gene expression.
- Infected human foreskin fibroblasts with HCMV strains (AD169, Toledo) and mock controls.
- Performed hybridizations to detect and quantify viral transcripts.
Main Results:
- Approximately 95% of predicted HCMV genes showed detectable mRNA levels.
- Achieved high median signal-to-noise (41) and signal-to-background (14) ratios.
- Demonstrated high reproducibility with average linear regressions above 0.95 (within-array) and 0.9 (between-array).
- Successfully detected strain-specific transcripts (Toledo vs. AD169).
Conclusions:
- The developed HCMV microarray is a reliable tool for comprehensive gene expression analysis.
- The protocol ensures accurate and reproducible measurement of viral transcripts.
- This technology facilitates detailed studies of HCMV infection and host-pathogen dynamics.