Photocleavable circular oligonucleotides
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United States of America Patent
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Jul 6, 1999
Grant Date -
N/A
app pub date -
Mar 2, 1998
filing date -
Jun 10, 1996
priority date (Note) -
Expired
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Abstract
The photocleavable cyclic oligonucleotide according to the invention is the one that possesses a base sequence having the hybridization ability toward DNA or RNA to targeted, and is further provided with the structure cyclized by a photocleavable group. Accordingly, the photocleavable cyclic oligonucleotide according to the invention, after having been introduced in vivo, is hardly susceptible to the nuclease decomposition reaction owing to its cyclic structure and thus it is capable of diffusing toward the predetermined sites in vivo with sufficient time. Moreover, by being irradiated with the light at an appropriate wavelength after a predetermined period of time, the photocleavable group as described above is cleaved photochemically, thus cutting the predetermined bond. This permits the oligonucleotide that was cyclic to be a linear oligonucleotide which expresses the function of an antisense oligonucleotide.
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