Isolating Neuronal Chromatin from Brain Tissue
Author Information
Author(s): Jiang Yan, Matevossian Anouch, Huang Hsien-Sung, Straubhaar Juerg, Akbarian Schahram
Primary Institution: University of Massachusetts Medical School
Hypothesis
Can a protocol be developed to selectively tag and isolate neuronal nuclei for chromatin analysis?
Conclusion
The protocol allows for the efficient collection of neuronal nuclei from various brain regions for chromatin immunoprecipitation within one day.
Supporting Evidence
- Neuronal nuclei can be selectively tagged for analysis.
- Histone methylation marks differ significantly between neuronal and non-neuronal nuclei.
- The method allows for the study of chromatin regulation in specific neuronal populations.
- Chromatin immunoprecipitation can be performed with as few as 10,000 cells.
Takeaway
Scientists figured out how to collect special parts of brain cells called nuclei so they can study how genes work in those cells.
Methodology
The study involved tagging neuronal nuclei using immunolabeling or a transgene-derived histone, followed by fluorescence-activated sorting and chromatin immunoprecipitation.
Potential Biases
Potential biases may arise from the cellular composition of the brain tissue and the sorting process.
Limitations
Loss of nuclei during the procedure could total up to 50% of the starting material.
Participant Demographics
Human postmortem brain samples from individuals aged 8 to 69 years.
Statistical Information
P-Value
p<2.2e-16
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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