| 摘要 |
<p>Methods for photocleavage of a polymer of ribonucleic acid using a texaphyrin or a texaphyrin metal complex are provided. A preferred method of use is the site-specific cleavage of a polymer of ribonucleic acid and a preferred texaphyrin is a derivatized texaphyrin having binding specificity, in particular, a texaphyrin covalently coupled to a site-directing molecule, preferably an oligonucleotide. Possible substrates for cleavage include messenger, ribosomal, transfer, small nuclear, and small cytosolic ribonucleic acids, and RNA cofactors, thereby inactivating these ribonucleic acids and providing a multifaceted approach for treating benign or malignant cancer cells, or other undesired cells or tissues.</p> |
