User profiles for M. Christmann

Mathias Christmann

Professor of Chemistry, Freie Universität Berlin
Verified email at fu-berlin.de
Cited by 4949

Mechanisms of human DNA repair: an update

M Christmann, MT Tomicic, WP Roos, B Kaina - Toxicology, 2003 - Elsevier
The human genome, comprising three billion base pairs coding for 30000–40000 genes, is
constantly attacked by endogenous reactive metabolites, therapeutic drugs and a plethora of …

MGMT: key node in the battle against genotoxicity, carcinogenicity and apoptosis induced by alkylating agents

B Kaina, M Christmann, S Naumann, WP Roos - DNA repair, 2007 - Elsevier
O 6 -methylguanine-DNA methyltransferase (MGMT) plays a crucial role in the defense
against alkylating agents that generate, among other lesions, O 6 -alkylguanine in DNA (…

Asymmetric organocatalysis in total synthesis–a trial by fire

…, RP Herrera, M Christmann - Natural Product …, 2010 - pubs.rsc.org
… In recent years, the Christmann group has worked in the field of dienamine catalysis. In
2008, they reported on the synthesis of novel mono- and bicyclic scaffolds by γ-activation of …

Non-medical use of prescription stimulants and illicit use of stimulants for cognitive enhancement in pupils and students in Germany

…, C Bonertz, M Christmann, M Huss… - …, 2011 - thieme-connect.com
Introduction: The aim of this study was to assess for the first time the prevalence and factors
associated with stimulant use exclusively for cognitive enhancement among pupils and …

O6-Methylguanine-DNA methyltransferase (MGMT) in normal tissues and tumors: enzyme activity, promoter methylation and immunohistochemistry

M Christmann, B Verbeek, WP Roos, B Kaina - Biochimica et Biophysica …, 2011 - Elsevier
O 6 -Methylguanine-DNA methyltransferase (MGMT) is a suicide enzyme that repairs the pre-mutagenic,
pre-carcinogenic and pre-toxic DNA damage O 6 -methylguanine. It also …

[HTML][HTML] Survival and death strategies in glioma cells: autophagy, senescence and apoptosis triggered by a single type of temozolomide-induced DNA damage

…, S Quiros, KH Tomaszowski, M Christmann… - PloS one, 2013 - journals.plos.org
Apoptosis, autophagy, necrosis and cellular senescence are key responses of cells that were
exposed to genotoxicants. The types of DNA damage triggering these responses and their …

Transcriptional regulation of human DNA repair genes following genotoxic stress: trigger mechanisms, inducible responses and genotoxic adaptation

M Christmann, B Kaina - Nucleic acids research, 2013 - academic.oup.com
DNA repair is the first barrier in the defense against genotoxic stress. In recent years, mechanisms
that recognize DNA damage and activate DNA repair functions through transcriptional …

One‐Pot Reactions Accelerate the Synthesis of Active Pharmaceutical Ingredients

C Vaxelaire, P Winter, M Christmann - Angewandte Chemie International …, 2011 - infona.pl
All in one: A one‐pot synthesis of the dipeptidylpeptidase IV selective inhibitor ABT‐341 (see
structure) by using an “uninterrupted sequence of reactions” has been developed. This …

(−)‐Englerin A is a potent and selective activator of TRPC4 and TRPC5 calcium channels

…, T Seitz, S Ziegler, M Christmann… - Angewandte Chemie …, 2015 - Wiley Online Library
… value of 9.5 nM. c) Mean responses after 4 min exposure to vehicle, 1 μM (−)-EA, or 1 μM
(+)… min exposure to vehicle, 1 μM (−)-EA, or 1 μM (−)-EA in the presence of 5 μM ML204 (n/N=4/…

Human monocytes are severely impaired in base and DNA double-strand break repair that renders them vulnerable to oxidative stress

M Bauer, M Goldstein, M Christmann… - Proceedings of the …, 2011 - National Acad Sciences
Monocytes are key players in the immune system. Crossing the blood barrier, they infiltrate
tissues and differentiate into (i) macrophages that fight off pathogens and (ii) dendritic cells (…