Publication Date:
2009-08-07
Description:
Long interspersed element 1 (LINE-1 or L1) retrotransposons have markedly affected the human genome. L1s must retrotranspose in the germ line or during early development to ensure their evolutionary success, yet the extent to which this process affects somatic cells is poorly understood. We previously demonstrated that engineered human L1s can retrotranspose in adult rat hippocampus progenitor cells in vitro and in the mouse brain in vivo. Here we demonstrate that neural progenitor cells isolated from human fetal brain and derived from human embryonic stem cells support the retrotransposition of engineered human L1s in vitro. Furthermore, we developed a quantitative multiplex polymerase chain reaction that detected an increase in the copy number of endogenous L1s in the hippocampus, and in several regions of adult human brains, when compared to the copy number of endogenous L1s in heart or liver genomic DNAs from the same donor. These data suggest that de novo L1 retrotransposition events may occur in the human brain and, in principle, have the potential to contribute to individual somatic mosaicism.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2909034/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉 〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2909034/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Coufal, Nicole G -- Garcia-Perez, Jose L -- Peng, Grace E -- Yeo, Gene W -- Mu, Yangling -- Lovci, Michael T -- Morell, Maria -- O'Shea, K Sue -- Moran, John V -- Gage, Fred H -- GM069985/GM/NIGMS NIH HHS/ -- GM082970/GM/NIGMS NIH HHS/ -- MH082070/MH/NIMH NIH HHS/ -- NS048187/NS/NINDS NIH HHS/ -- P20 GM069985/GM/NIGMS NIH HHS/ -- P20 GM069985-010001/GM/NIGMS NIH HHS/ -- R01 GM060518/GM/NIGMS NIH HHS/ -- R01 GM082970/GM/NIGMS NIH HHS/ -- R01 GM082970-03/GM/NIGMS NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2009 Aug 27;460(7259):1127-31. doi: 10.1038/nature08248. Epub 2009 Aug 5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Genetics, The Salk Institute for Biological Studies, 10010 North Torrey Pines Road, La Jolla, California 92037, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19657334" target="_blank"〉PubMed〈/a〉
Keywords:
5' Untranslated Regions/genetics
;
Brain/cytology
;
Cell Line
;
Chromatin Immunoprecipitation
;
DNA Methylation
;
Embryonic Stem Cells/*cytology/*metabolism
;
Fetus/cytology
;
Gene Dosage
;
Humans
;
Neurons/*cytology/*metabolism
;
Polymerase Chain Reaction
;
Retroelements/*genetics
Print ISSN:
0028-0836
Electronic ISSN:
1476-4687
Topics:
Biology
,
Chemistry and Pharmacology
,
Medicine
,
Natural Sciences in General
,
Physics
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