Ne-22 Ion-Beam Radiation Damage to DNA: From Initial Free Radical Formation to Resulting DNA-Base Damage.

Ne-22 Ion-Beam Radiation Damage to DNA: From Initial Free Radical Formation to Resulting DNA-Base Damage.
复制标题

DOI:
10.1021/acsomega.1c01954
复制
发表时间:
2021-06-29
期刊:
影响因子:
4.1
通讯作者:
Dizdaroglu M
Dizdaroglu M
中科院分区:
化学3区
文献类型:
--
作者:
Kant M;Jaruga P;Coskun E;Ward S;Stark AD;Baumann T;Becker D;Adhikary A;Sevilla MD;Dizdaroglu M

文献摘要

参考文献

相似文献

我们报告了 77 K 下水合(12 ± 3 H2O/核苷酸)鲑鱼睾丸 DNA 的 Ne-22 离子束辐射所涉及的物理化学过程和 DNA 损伤产物。使用电子自旋共振 (ESR) 光谱法鉴定了 77 K 下捕获的自由基。使用两种不同的质谱技术测量 DNA 损伤揭示了许多 DNA 产物的形成。 ESR 光谱获得的结果表明,随着离子束辐射的线性能量转移 (LET) 沿束轨增加,DNA 自由基的产生相应增加,直到达到布拉格峰之前。沿着离子束轨道的 DNA 产物的产率与激进生产非常一致。这项工作首次结合使用 ESR 光谱和质谱技术,能够更好地了解重离子束对 DNA 的辐射损伤机制,详细说明 DNA 自由基的形成及其后续产物。
We report on the physicochemical processes and the products of DNA damage involved in Ne-22 ion-beam radiation of hydrated (12 ± 3 H2O/nucleotide) salmon testes DNA at 77 K. Free radicals trapped at 77 K were identified using electron spin resonance (ESR) spectroscopy. The measurement of DNA damage using two different techniques of mass spectrometry revealed the formation of numerous DNA products. Results obtained by ESR spectroscopy showed that as the linear energy transfer (LET) of the ion-beam radiation increases along the beam track, the production of DNA radicals correspondingly increases until just before the Bragg peak is reached. Yields of DNA products along the ion-beam track were in excellent agreement with the radical production. This work is the first to use the combination of ESR spectroscopy and mass spectrometric techniques enabling a better understanding of mechanisms of radiation damage to DNA by heavy ion beams detailing the formation of DNA free radicals and their subsequent products.
DOI: 10.3390/ijms22041736
发表时间: 2021-02-09
影响因子: 5.6
作者:
Bell M;Kumar A;Sevilla MD
通讯作者: Sevilla MD
DOI: 10.1021/ja9014869
发表时间: 2009-06-24
影响因子: 15
作者:
Adhikary A;Khanduri D;Sevilla MD
通讯作者: Sevilla MD
DOI: 10.1021/jp3023919
发表时间: 2012-05-24
影响因子: 3.3
作者:
Adhikary, Amitava;Becker, David;Palmer, Brian J.;Heizer, Alicia N.;Sevilla, Michael D.
通讯作者: Sevilla, Michael D.
DOI: 10.1021/ja0352146
发表时间: 2003-09-24
影响因子: 15
作者:
Birincioglu, M;Jaruga, P;Gates, KS
通讯作者: Gates, KS
DOI: 10.1042/bj2350531
发表时间: 1986-04-15
影响因子: 4.1
作者:
DIZDAROGLU, M;HOLWITT, E;BLAKELY, WF
通讯作者: BLAKELY, WF