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Individuality and variation in gene expression patterns in human blood
Adeline R Whitney1, Maximilian Diehn, Stephen J Popper
1Department of Microbiology and Immunology, Stanford University School of Medicine, Stanford, CA 94305, USA.
Summary
Gene expression varies between individuals and over time in healthy people. Understanding this human individuality is key for identifying disease-related gene expression changes.
Area of Science:
- Human biology
- Genomics
- Molecular biology
Background:
- Interindividual and temporal variation in gene expression is crucial for understanding human biology.
- Characterizing healthy tissue gene expression is foundational for disease pattern recognition.
- Peripheral blood is an accessible tissue for studying gene expression variation in clinical settings.
Purpose of the Study:
- To survey gene expression variation in peripheral blood from healthy volunteers.
- To establish a baseline for identifying disease-associated gene expression changes.
- To define human individuality at the gene expression level.
Main Methods:
- Utilized cDNA microarrays to analyze gene expression patterns.
- Collected sequential peripheral blood samples from 75 healthy volunteers.
- Correlated gene expression features with demographic and temporal factors.
Main Results:
- Identified variations in gene expression linked to blood cell subset proportions.
- Found correlations between gene expression, gender, age, and time of day.
- Discovered donor-specific gene expression patterns through sequential sampling.
Conclusions:
- Gene expression patterns in peripheral blood exhibit significant interindividual and temporal variability.
- Demographic and cellular factors influence healthy gene expression profiles.
- Established a valuable database for comparing disease-associated gene expression patterns.