Tumir LM, Piantanida I, Zinić M, Juranović Cindrić I, Meić Z, Kralj M, Tomić S. Synthesis of phenanthridinium-bis-nucleobase conjugates, interactions with poly U, nucleotides and in vitro antitumour activity of mono- and bis-nucleobase conjugates.
Eur J Med Chem 2006;
41:1153-66. [PMID:
16793178 DOI:
10.1016/j.ejmech.2006.05.005]
[Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Revised: 04/25/2006] [Accepted: 05/04/2006] [Indexed: 11/24/2022]
Abstract
Novel bis-nucleobase-phenanthridinium conjugates were synthesised and their aqueous solutions spectroscopically characterised. Bis-adenine conjugate revealed in aqueous solutions significantly more pronounced intramolecular aromatic stacking interactions than bis-uracil analogue. In contrast with previously reported poly A recognition by bis-uracil conjugate, recognition of complementary nucleotides and poly U was not observed due to the strong interference of bulk water with hydrogen bonding between nucleobases. The screening of anticancer activity on six human cell lines revealed that tethering of a nucleobase to phenanthridinium moiety diminished antiproliferative potential of phenanthridinium. However, among mono-nucleobase conjugates adenine derivative was found to be the most selective one (MiaPaCa-2, Hep-2).
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