| 摘要 |
A target gene can be expressed site-specit3cally and with desired timing without damaging the cell itself or inducing mutation in a nucleic acid molecule within the cell. Expression of the above target gene is suppressed by allowing a caging agent represented by the following formula (1) to bind to a nucleic acid molecule containing the target gene; and the suppression of expression of the above target gene is cancelled by detaching the caging agent from the above nucleic acid molecule by UV-illununation.
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