Abstract:
:Antisense oligodeoxynucleotides directed against a 24-mer RNA derived from the long terminal repeat (LTR) region of HIV were linked to proto- and methylpyrroporphyrin and their zinc derivatives. The oligonucleotide-porphyrin conjugates were tested for their ability to induce photodamage on the target RNA. Upon hybridization followed by irradiation at 405 nm, the photochemical reaction led to photocross-linking of the antisense derivative to the RNA substrate. The protoporphyrin exhibited a much higher cross-linking yield than the methylpyrroporphyrin while the Zn-porphyrin derivatives were found to be less efficient than their corresponding nonmetallated congeners. The specificity of the photocross-linking reaction between the porphyrin-oligomer and its target RNA was demonstrated by the following evidence: (1) hybrid formation was required for photocross-linking to occur, (2) the sites of cross-linking on the target RNA were identified at G residues located in close proximity to the porphyrin photoactive center in the hybrid and (3) addition of bulk calf liver RNA did not affect the photocross-linking efficiency.
journal_name
Photochem Photobioljournal_title
Photochemistry and photobiologyauthors
Mastruzzo L,Woisard A,Ma DD,Rizzarelli E,Favre A,Le Doan Tdoi
10.1111/j.1751-1097.1994.tb05110.xsubject
Has Abstractpub_date
1994-10-01 00:00:00pages
316-22issue
4eissn
0031-8655issn
1751-1097journal_volume
60pub_type
杂志文章abstract::The infrared spectrum of monomeric unsubstituted coumarin (C9H6O2; 2H-1-benzopyran-2-one), isolated in solid argon at 10 K is presented and assigned. The UV-induced (lambda>200 nm) unimolecular photochemistry of the matrix-isolated compound was studied experimentally. Three main photoreactions were observed: (a) decar...
journal_title:Photochemistry and photobiology
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更新日期:2011-09-01 00:00:00
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更新日期:2006-03-01 00:00:00
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pub_type: 杂志文章,评审
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journal_title:Photochemistry and photobiology
pub_type: 杂志文章
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更新日期:1991-03-01 00:00:00
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更新日期:2007-07-01 00:00:00
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journal_title:Photochemistry and photobiology
pub_type: 杂志文章
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更新日期:2004-09-01 00:00:00
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journal_title:Photochemistry and photobiology
pub_type: 杂志文章
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journal_title:Photochemistry and photobiology
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journal_title:Photochemistry and photobiology
pub_type: 杂志文章,评审
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journal_title:Photochemistry and photobiology
pub_type: 杂志文章
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更新日期:1991-07-01 00:00:00
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pub_type: 杂志文章
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更新日期:2010-11-01 00:00:00
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pub_type: 杂志文章
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更新日期:2000-07-01 00:00:00
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pub_type: 杂志文章
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更新日期:2010-11-01 00:00:00
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journal_title:Photochemistry and photobiology
pub_type: 杂志文章
doi:10.1111/j.1751-1097.2012.01165.x
更新日期:2012-09-01 00:00:00
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journal_title:Photochemistry and photobiology
pub_type: 杂志文章
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更新日期:1992-08-01 00:00:00