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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Small conditional RNA ： ウィキペディア英語版 Small conditional RNA A small conditional RNA (scRNA) is a small RNA molecule or complex (typically less than approximately 100 nt) engineered to interact and change conformation conditionally in response to cognate molecular inputs so as to perform signal transduction in vitro, in situ, or in vivo.〔L.M. Hochrein, M. Schwarzkopf, M. Shahgholi, P. Yin, and N.A. Pierce. J Am Chem Soc, 135(46):17322–17330, 2013.〕 In the absence of cognate input molecules, scRNAs are engineered to coexist metastably or stably without interacting. Detection of the cognate inputs initiates downstream conformational changes of one or more scRNAs leading to generation of the desired output signal. The output signal may be intended to read out the state of endogenous biological circuitry (e.g., mapping gene expression for biological research or medical diagnosis),〔H.M.T. Choi, J.Y. Chang, L.A. Trinh, J.E. Padilla,S.E. Fraser, and N.A. Pierce. Nature Biotechnol, 28:1208–1212, 2010.〕 or to regulate the state of endogenous biological circuitry (e.g., perturbing gene expression for biological research or medical treatment).〔 scRNA sequences can be programmed to recognize different inputs or to activate different outputs,〔〔〔J.B. Sternberg and N.A. Pierce. Nano Lett, 14(8):4568–4572, 2014.〕 achieving even single-nucleotide sequence selectivity.〔 == Examples of scRNA signal transduction == Fluorophore-labeled scRNAs have been engineered to transduce between detection of mRNA targets and generation of bright fluorescent amplification polymers in situ (Figure 1).〔 In this context, scRNA signal transduction enables multiplexed mapping of mRNA expression within intact vertebrate embryos (Figure 2).〔 scRNAs have been engineered to perform shape and sequence transduction to conditionally produce a Dicer substrate targeting 'silencing target' mRNA Y upon detection of an independent 'detection target' mRNA X, with subsequent Dicer processing yielding a small interfereing RNA (siRNA) targeting mRNA Y for destruction (Figure 3).〔 In this context, scRNA signal transduction provides a step towards implementing conditional RNA interference (Figure 4). 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Small conditional RNA」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.