Consistent levels of A-to-I RNA editing across individuals in coding sequences and non-conserved Alu repeats

Autor: Osenberg Sivan, Safran Michal, Barzilai Aviv, Paz-Yaacov Nurit, Levanon Erez Y, Greenberger Shoshana, Amariglio Ninette, Rechavi Gideon, Eisenberg Eli
Jazyk: angličtina
Rok vydání: 2010
Předmět:
Zdroj: BMC Genomics, Vol 11, Iss 1, p 608 (2010)
Druh dokumentu: article
ISSN: 1471-2164
DOI: 10.1186/1471-2164-11-608
Popis: Abstract Background Adenosine to inosine (A-to-I) RNA-editing is an essential post-transcriptional mechanism that occurs in numerous sites in the human transcriptome, mainly within Alu repeats. It has been shown to have consistent levels of editing across individuals in a few targets in the human brain and altered in several human pathologies. However, the variability across human individuals of editing levels in other tissues has not been studied so far. Results Here, we analyzed 32 skin samples, looking at A-to-I editing level in three genes within coding sequences and in the Alu repeats of six different genes. We observed highly consistent editing levels across different individuals as well as across tissues, not only in coding targets but, surprisingly, also in the non evolutionary conserved Alu repeats. Conclusions Our findings suggest that A-to-I RNA-editing of Alu elements is a tightly regulated process and, as such, might have been recruited in the course of primate evolution for post-transcriptional regulatory mechanisms.
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