دورية أكاديمية
Platinum Complexes Can Bind to Telomeres by Coordination
| العنوان: | Platinum Complexes Can Bind to Telomeres by Coordination |
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| المؤلفون: | Lina Saker, Samar Ali, Caroline Masserot, Guillaume Kellermann, Joel Poupon, Marie-Paule Teulade-Fichou, Evelyne Ségal-Bendirdjian, Sophie Bombard |
| المصدر: | International Journal of Molecular Sciences, Vol 19, Iss 7, p 1951 (2018) |
| بيانات النشر: | MDPI AG, 2018. |
| سنة النشر: | 2018 |
| المجموعة: | LCC:Biology (General) LCC:Chemistry |
| مصطلحات موضوعية: | telomeres, platinum complexes, cisplatin, G-quadruplex, TRF2, Biology (General), QH301-705.5, Chemistry, QD1-999 |
| الوصف: | It is suggested that several compounds, including G-quadruplex ligands, can target telomeres, inducing their uncapping and, ultimately, cell death. However, it has never been demonstrated whether such ligands can bind directly and quantitatively to telomeres. Here, we employed the property of platinum and platinum-G-quadruplex complexes to target G-rich sequences to investigate and quantify their covalent binding to telomeres. Using inductively coupled plasma mass spectrometry, surprisingly, we found that, in cellulo, in the presence of cisplatin, a di-functional platinum complex, telomeric DNA was platinated 13-times less than genomic DNA in cellulo, as compared to in vitro data. On the contrary, the amount of mono-functional platinum complexes (Pt-ttpy and Pt-tpy) bound either to telomeric or to genomic DNA was similar and occurred in a G-quadruplex independent-manner. Importantly, the quantification revealed that the low level of cisplatin bound to telomeric DNA could not be the direct physical cause of TRF2 displacement from telomeres. Altogether, our data suggest that platinum complexes can affect telomeres both directly and indirectly. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1422-0067 |
| العلاقة: | http://www.mdpi.com/1422-0067/19/7/1951Test; https://doaj.org/toc/1422-0067Test |
| DOI: | 10.3390/ijms19071951 |
| الوصول الحر: | https://doaj.org/article/6f2c6badc1104656964195a95f1ca4a3Test |
| رقم الانضمام: | edsdoj.6f2c6badc1104656964195a95f1ca4a3 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 14220067 |
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| DOI: | 10.3390/ijms19071951 |