Related Experiment Video
Updated: May 26, 2026
11:52
Analysis of LINE-1 Retrotransposition at the Single Nucleus Level
Published on: April 23, 2016
Genetic and epigenetic variations contributed by Alu retrotransposition.
Alexandre de Andrade1, Min Wang, Maria F Bonaldo
1Falk Brain Tumor Center, Cancer Biology and Epigenomics Program, Children's Memorial Research Center, Chicago, IL 60614-3394, USA.
BMC Genomics
|December 22, 2011
Summary
Researchers identified 327 recent Alu element insertions, mostly novel, using Alu-anchored bisulfite PCR. They investigated genetic and epigenetic variations, finding some Alu insertions near the TOMM5 gene showed differential methylation patterns.
Area of Science:
- Genomics
- Molecular Biology
- Epigenetics
Background:
- De novo retrotransposition of Alu elements drives human genetic variation.
- Understanding recent Alu insertions is key to mapping human polymorphisms.
Purpose of the Study:
- To identify recent Alu element insertions using Alu-anchored bisulfite PCR.
- To investigate the genetic and epigenetic variations associated with these new insertions.
Main Methods:
- Alu-anchored bisulfite PCR libraries were used to identify recent Alu insertions.
- Sequence verification and epigenetic analysis (methylation) were performed on identified insertions.
Main Results:
- 327 putatively recent Alu insertions were identified, with 316 being novel.
- Sequence verification confirmed 47 of 49 selected insertions.
- An Alu insertion near TOMM5 showed differential methylation, with unmethylated CpG islands and flanking regions.
Conclusions:
- The developed methodology is valuable for generating genetic and epigenetic variation maps.
- This approach aids in understanding the role of Alu elements in human genome evolution.
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