An antisense molecule which acts on both directions of the inhibition and expression of a gene function and is capable of on-off switching of a gene function appropriately depending on the external factors (orientation controlling factors); and a method for reversibly controlling the expression of a gene function by using the antisense molecule. Such an antisense molecule, which has at least one sugar-base moiety consisting of sugar and a purine or pyrimidine base bonded thereto via a glucoside bond, can bind to a mRNA/gene and/or dissociate therefrom under the orientation control of the base moiety in the molecule by the orientation controlling factors.
一种反义分子,可以作用于
基因功能的抑制和表达的两个方向,并且能够根据外部因素(定向控制因子)适当地开关
基因功能;以及一种通过使用该反义分子可逆地控制
基因功能表达的方法。这样的反义分子至少包含一个由糖和通过葡苷键连接到糖上的
嘌呤或
嘧啶碱基部分,可以通过分子中碱基部分的定向控制因子的定向控制,结合到mRNA/
基因上,和/或从中解离。