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Lexitropsine
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Der Bezeichnung Lexitropsine beschreibt eine Gruppe DNA-bindender MolekΓΌle, die Analoga der Antibiotika Netropsin und Distamycin sind und in der kleinen Furche eines DNA-Doppelstrangs binden kΓΆnnen.cite-ref-1[1]cite-ref-2[2]

Contents


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Eigenschaften

Einige Lexitropsine weisen antibakterielle Eigenschaften auf.cite-ref-3[3] Basierend auf Lexitropsinen wurden sequenzspezifische DNA-Alkylierungsmittel erzeugt.cite-ref-4[4] Die Alkylierungsmittel besitzen teilweise Anti-Tumor-Wirkungen.cite-ref-5[5]cite-ref-6[6] Daher wurde eine Verwendung von Lexitropsinen als Chemotherapeutika untersucht.cite-ref-7[7]

Je nach Aufbau des Lexitropsins werden unterschiedliche DNA-Sequenzen gebunden.cite-ref-8[8] Dabei binden sie an einen Bereich von vier bis sechs Nukleotiden.cite-ref-pmid-14980697-9-0[9] Manche Lexitropsine binden als Dimer an die kleine Furche ihrer Ziel-DNA-Sequenz in einer Kopf-Schwanz-Orientierung, d. h. zwei Lexitropsine binden pro doppelstrΓ€ngiger Zielsequenz.cite-ref-pmid-14980697-9-1[9]

AusgewΓ€hlte Vertreter

| Lexitropsine | Lexitropsine | Lexitropsine | Lexitropsine | Lexitropsine | Lexitropsine | Lexitropsine | Lexitropsine |
|---|---|---|---|---|---|---|---|
| Name | Lexitropsin A | Lexitropsin B | Lexitropsin C | Lexitropsin D | Lexitropsin E | Lexitropsin F | Lexitropsin G |
| Strukturformel | | | | | | | |
| R 1 | CH | CH | N | N | CH | N | N |
| R 2 | CH | N | CH | N | N | CH | N |

Einzelnachweise

cite-note-11. ↑ Sondhi S.M., Praveen Reddy B.S. and Lown J.W.: Lexitropsin conjugates : Action on DNA targets. In: Current Medicinal Chemistry. 4. Jahrgang, 1997, S. 313–358.
cite-note-22. ↑ Goodsell D.S., Ng H.L., Kopka M.L., Lown J.W., Dickerson R.E.: Structure of a dicationic monoimidazole lexitropsin bound to DNA. In: Biochemistry. 34. Jahrgang, Nr. 51, 1995, S. 16654–61, doi:10.1021/bi00051a013, PMID 8527438.
cite-note-33. ↑ N. G. Anthony, D. Breen, J. Clarke, G. Donoghue, A. J. Drummond, E. M. Ellis, C. G. Gemmell, J. J. Helesbeux, I. S. Hunter, A. I. Khalaf, S. P. Mackay, J. A. Parkinson, C. J. Suckling, R. D. Waigh: Antimicrobial lexitropsins containing amide, amidine, and alkene linking groups. In: J Med Chem. (2007), Band 50, Ausgabe 24, S. 6116–6125. PMID 17960927.
cite-note-44. ↑ W. A. Denny: DNA minor groove alkylating agents. In: Curr Med Chem. (2001), Band 8, Ausgabe 5, S. 533–544. PMID 11281840.
cite-note-55. ↑ M. S. Bobola, S. Varadarajan, N. W. Smith, R. D. Goff, D. D. Kolstoe, A. Blank, B. Gold, J. R. Silber: Human glioma cell sensitivity to the sequence-specific alkylating agent methyl-lexitropsin. In: Clinical Cancer Research. Band 13, Nummer 2 Pt 1, Januar 2007, S. 612–620, ISSN 1078-0432. doi:10.1158/1078-0432.CCR-06-1127. PMID 17255284. PDF.
cite-note-66. ↑ B. S. Reddy, S. K. Sharma, J. W. Lown: Recent developments in sequence selective minor groove DNA effectors. In: Current medicinal chemistry. Band 8, Nummer 5, April 2001, S. 475–508, ISSN 0929-8673. PMID 11281837.
cite-note-77. ↑ X. Han, C. Li, M. D. Mosher, K. C. Rider, P. Zhou, R. L. Crawford, W. Fusco, A. Paszczynski, N. R. Natale: Design, synthesis and biological evaluation of a novel class of anticancer agents: anthracenylisoxazole lexitropsin conjugates. In: Bioorganic & Medicinal Chemistry. Band 17, Nummer 4, Februar 2009, S. 1671–1680, ISSN 1464-3391. doi:10.1016/j.bmc.2008.12.056. PMID 19167892. PMC 2978248 (freier Volltext).
cite-note-88. ↑ Goodsell D.S.: Sequence recognition of DNA by lexitropsins. In: Curr Med Chem. 8. Jahrgang, Nr. 5, 2001, S. 509–16, PMID 11281838.
cite-note-pmid-14980697-99. ↑ N. G. Anthony, K. R. Fox, B. F. Johnston, A. I. Khalaf, S. P. Mackay, I. S. McGroarty, J. A. Parkinson, G. G. Skellern, C. J. Suckling, R. D. Waigh: DNA binding of a short lexitropsin. In: Bioorg Med Chem Lett. (2004), Band 14, Ausgabe 5, S. 1353–1356. PMID 14980697.