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@ARTICLE{Svensson:639380,
author = {Svensson, Pamela H. W. and Rydgren, Brian and Schwob, Lucas
and Berholts, Marta and Stenerlöw, Bo and Hocine Hafiani,
Ouassim and André, Tomas and Grånäs, Oscar and Timneanu,
Nicusor and Leroux, Juliette and Nair, Aarathi and Pille,
Laura and Oostenrijk, Bart and Bari, Sadia and Björneholm,
Olle and Caleman, Carl},
title = {{U}nlocking atom-specific radiotherapy – {DNA} backbone
breakage caused by {X}-ray photoactivation},
journal = {Chemical science},
volume = {16},
number = {41},
issn = {2041-6520},
address = {Cambridge},
publisher = {RSC},
reportid = {PUBDB-2025-04474},
pages = {19235 - 19243},
year = {2025},
abstract = {The effectiveness of radiation therapy can be enhanced by
understanding the fragmentation mechanisms of iodine-doped
DNA oligonucleotide under tender X-rays, as explored
experimentally and computationally in our study. By
primarily targeting iodine atoms above their L-edge
ionization energies, we observed a significant increase in
the production of fragments critical to DNA backbone
breakage, particularly within mass ranges associated with
phosphate and sugar groups. The mass spectroscopy
experiments demonstrated that iodine-doped DNA
oligonucleotides undergo intense fragmentation at long
distances from the initial photoactivation site.
Born–Oppenheimer based molecular dynamics simulations
confirmed the generation of numerous small fragments,
including reactive oxygen species, which are pivotal in
enhancing the radiation damage. These findings highlight the
effectiveness of iodine doping in amplifying DNA damage in
radiotherapy via iodine photoactivation, thereby improving
the potential for targeted cancer treatment.},
cin = {FS-BIG / FS DOOR-User / CFEL-XAC},
ddc = {540},
cid = {I:(DE-H253)FS-BIG-20220318 /
$I:(DE-H253)FS_DOOR-User-20241023$ /
I:(DE-H253)CFEL-XAC-20240710},
pnm = {633 - Life Sciences – Building Blocks of Life: Structure
and Function (POF4-633) / 6G3 - PETRA III (DESY) (POF4-6G3)
/ AIM, DFG project G:(GEPRIS)390715994 - EXC 2056: CUI:
Advanced Imaging of Matter (390715994) / PRISMAS - PhD
Research and Innovation in Synchrotron Methods and
Applications in Sweden (101081419) / FS-Proposal: I-20220428
(I-20220428)},
pid = {G:(DE-HGF)POF4-633 / G:(DE-HGF)POF4-6G3 /
G:(GEPRIS)390715994 / G:(EU-Grant)101081419 /
G:(DE-H253)I-20220428},
experiment = {EXP:(DE-H253)P-P01-20150101},
typ = {PUB:(DE-HGF)16},
doi = {10.1039/D5SC03414K},
url = {https://bib-pubdb1.desy.de/record/639380},
}