2021-01-08
Annika Menke, Romeo C. A. Dubini, Peter Mayer,Petra Rovó, and Lena J. Daumann
With about 4 % abundance in the genome 5‐methylcytosine (5mC) is one of the most important epigenetic modifications. Change in DNA hypermethylation levels has even been linked to resistances to cisplatin treatment of cancer cells. This work aimed at the synthesis and full characterization of 5mC‐cisplatin adducts as well as for the examination of possible side‐reactions and transformations. We report the first X‐ray crystal structure of a cis‐[PtCl(5mC)(NH3)2]Cl complex and the formation of [PtCl(5mC)(NH3)2]+ and [PtCl(5mC)2(NH3)]+ with HR‐ESI mass spectrometry. Further, we explore complex formation and dynamics using 1H, 195Pt, and DOSY NMR spectroscopy. UV/Vis absorption and EPR spectroscopy also confirmed the formation of trace amounts of paramagnetic Pt‐blue species. In the process, a hemiprotonated 5mC dimer, 5mC‐5mCH+, reminiscent of the “i‐motif” in DNA tetramers, was structurally characterized.
Speaker: Prof. Dr. Thomas Carell
Ludwig-Maximilians-Universität München
Department of Chemistry Butenandtstr. 5 - 13
81377 Munich Germany
Phone: +49 (0)89 2180-77750
Fax: +49 (0)89 2180-77756
Email: This email address is being protected from spambots. You need JavaScript enabled to view it.
Managing Director: Dr. Oliver Baron
Institute for Chemical Epigenetics Munich (ICEM)
Ludwig-Maximilians-Universität München
Butenandtstr. 5 - 13
81377 Munich Germany
Phone: +49 (0)89 2180-77661
Fax: +49 (0)89 2180-77651
Email: This email address is being protected from spambots. You need JavaScript enabled to view it.
Secretary: Birgit Carell
Butenandtstr. 5 - 13 - Haus F 5.010
81377 Munich Germany
Phone: +49 (0)89 2180-77751
Fax: +49 (0)89 2180-77881
Email: This email address is being protected from spambots. You need JavaScript enabled to view it.
Email: This email address is being protected from spambots. You need JavaScript enabled to view it.
Prof. Dr. Hendrik Zipse (Spokesman)
LMU Munich
Department of Chemistry
Butenandtstr. 5 - 13
House F, Room 3.084
81377 Munich, Germany
Phone: +49 89 2180 77737
Fax: +49 89 2180-77738
Email: This email address is being protected from spambots. You need JavaScript enabled to view it.
Dr. Stefanie Kellner (Deputy Spokeswoman)
LMU Munich
Department of Chemistry
Butenandtstr. 5 - 13
House F, Room 1.054 und House B, Room 2.073
81377 Munich Germany
Phone: +49 89 2180 77737
This email address is being protected from spambots. You need JavaScript enabled to view it.
Dr. Martin Sumser (Coordinator)
LMU Munich
Department of Chemistry
Butenandtstr. 5 - 13
House F, Room 4.086
81377 Munich Germany
Phone: +49 89 2180 77765
This email address is being protected from spambots. You need JavaScript enabled to view it.
Contact IRTG 1309 related
Email: This email address is being protected from spambots. You need JavaScript enabled to view it.