The present invention relates to stabilization of RNA, particularly mRNA, and increased mRNA translation. The present invention specifically relates to the modification of RNA, particularly in vitro transcribed RNA, which results in improved transcriptional stability and / or translational efficiency. In accordance with the present invention, it has been demonstrated that specific sequences in the 3 ′ untranslated region (UTR) of RNA molecules improve stability and translation efficiency. [Selection figure] None本発明は、RNA、特にmRNAの安定化及びmRNA翻訳の増加に関する。本発明は具体的には、転写安定性及び/又は翻訳効率の向上をもたらす、RNA、特にin vitro転写RNAの修飾に関する。本発明によれば、RNA分子の3’非翻訳領域(UTR)における特定の配列が安定性及び翻訳効率を改善することが実証された。【選択図】なし