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Updated: Jul 29, 2026
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Obtaining High Quality RNA from Single Cell Populations in Human Postmortem Brain Tissue
Published on: August 7, 2009
Stability of RNA transcripts in post-mortem psychiatric brains
Summary
Post-mortem brain tissue RNA analysis reveals stable mRNA transcripts, even up to four days post-mortem. This confirms the reliability of RT-PCR for gene expression studies using these valuable samples.
Area of Science:
- Neuroscience
- Molecular Biology
- Genetics
Background:
- Post-mortem human brain tissue is crucial for studying neurological disorders.
- Assessing gene expression in post-mortem samples requires validated methods due to potential RNA degradation.
Purpose of the Study:
- To evaluate the stability of messenger RNA (mRNA) transcripts in human post-mortem brain tissue.
- To validate a sensitive and competitive reverse transcription polymerase chain reaction (RT-PCR) technique for gene expression analysis.
- To determine the suitability of post-mortem brain samples for differential gene expression studies.
Main Methods:
- RNA extraction from frozen human post-mortem brain tissue.
- Analysis of five gene products using a sensitive and competitive RT-PCR technique.
- Examination of samples with post-mortem intervals up to four days from control, schizophrenic, and alcoholic individuals.
- Evaluation of three housekeeping genes and Trk B and Trk C gene transcripts.
Main Results:
- mRNA transcript levels for three housekeeping genes, Trk B, and Trk C remained stable.
- Transcript stability was observed across all examined post-mortem time intervals (one to four days).
- The RT-PCR protocol demonstrated sensitivity and reliability in quantifying relative mRNA amounts.
Conclusions:
- The developed RT-PCR protocol is a reliable method for studying relative mRNA amounts in post-mortem brain samples.
- Housekeeping transcripts are stable in post-mortem brain tissue up to four days, supporting their use in gene expression studies.
- Post-mortem brain samples are valuable for differential gene expression research.
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