Elucidation of Nucleic Acid–Drug Interactions by Tandem Mass Spectrometry

Hari, Yvonne; Nyakas, Adrien; Stucki, Silvan; Schürch, Stefan (2014). Elucidation of Nucleic Acid–Drug Interactions by Tandem Mass Spectrometry. CHIMIA, 68(3), pp. 164-167. Bern: Schweizerische Chemische Gesellschaft 10.2533/chimia.2014.164

Full text not available from this repository. (Request a copy)

In continuation of the long tradition of mass spectrometric research at the University of Bern, our group focuses on the characterization of nucleic acids as therapeutic agents and as drug targets. This article provides a short overview of our recent work on platinated single-stranded and higher-order nucleic acids. Nearly three decades ago the development of soft ionization techniques opened a whole new chapter in the mass spectrometric analysis of not only nucleic acids themselves, but also their interactions with potential drug candidates. In contrast to modern next generation sequencing approaches, though, the goal of the tandem mass spectrometric investigation of nucleic acids is by no means the complete sequencing of genetic DNA, but rather the characterization of short therapeutic and regulatory oligonucleotides and the elucidation of nucleic acid–drug interactions. The influence of cisplatin binding on the gas-phase dissociation of nucleic acids was studied by the means of electrospray ionization tandem mass spectrometry. Experiments on native and modified DNA and RNA oligomers confirmed guanine base pairs as the preferred platination site and laid the basis for the formulation of a gas-phase fragmentation mechanism of platinated oligonucleotides. The study was extended to double stranded DNA and DNA quadruplexes. While duplexes are believed to be the main target of cisplatin in vivo, the recently discovered DNA quadruplexes constitute another promising target for anti-tumor drugs owing to their regulatory functions in the cell cycle.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Departement of Chemistry and Biochemistry

UniBE Contributor:

Hari, Yvonne; Nyakas, Adrien; Stucki, Silvan and Schürch, Stefan

Subjects:

500 Science > 570 Life sciences; biology
500 Science > 540 Chemistry

ISSN:

0009-4293

Publisher:

Schweizerische Chemische Gesellschaft

Language:

English

Submitter:

Stefan Schürch

Date Deposited:

27 Jan 2015 13:05

Last Modified:

26 Aug 2015 15:57

Publisher DOI:

10.2533/chimia.2014.164

URI:

https://boris.unibe.ch/id/eprint/61862

Actions (login required)

Edit item Edit item
Provide Feedback