Mesenchymal stem cells exhibit resistance to topoisomerase inhibition

• Verfasst von: Nicolay, Nils [VerfasserIn]
• Verfasst von: Rühle, Alexander [VerfasserIn]
• Verfasst von: Trinh, Thuy [VerfasserIn]
• Verfasst von: Weber, Klaus-Josef [VerfasserIn]
• Verfasst von: Ho, Anthony Dick [VerfasserIn]
• Verfasst von: Debus, Jürgen [VerfasserIn]
• Verfasst von: Saffrich, Rainer [VerfasserIn]
• Verfasst von: Huber, Peter E. [VerfasserIn]
• Titel: Mesenchymal stem cells exhibit resistance to topoisomerase inhibition
• Verf.angabe: Nils H. Nicolay, Alexander Rühle, Ramon Lopez Perez, Thuy Trinh, Sonevisay Sisombath, Klaus-Josef Weber, Peter Schmezer, Anthony D. Ho, Jürgen Debus, Rainer Saffrich, Peter E. Huber
• E-Jahr: 2016
• Jahr: 11 February 2016
• Umfang: 10 S.
• Fussnoten: Gesehen am 06.11.2019
• Titel Quelle: Enthalten in: Cancer letters
• Ort Quelle: Amsterdam [u.a.] : Elsevier Science, 1975
• Jahr Quelle: 2016
• Band/Heft Quelle: 374(2016), 1, Seite 75-84
• ISSN Quelle: 1872-7980
• DOI: doi:10.1016/j.canlet.2016.02.007
• Datenträger: Online-Ressource
• Sprache: eng
• Sach-SW: Bone marrow toxicity
• Sach-SW: Chemotherapy
• Sach-SW: Etoposide
• Sach-SW: Irinotecan
• Sach-SW: Mesenchymal stem cells
• Sach-SW: Topoisomerase inhibitor
• K10plus-PPN: 1681191636

Abstract

Background - Inhibition of cellular topoisomerases has been established as an effective way of treating certain cancers, albeit with often high levels of toxicity to the bone marrow. While the involvement of mesenchymal stem cells (MSCs) in bone marrow homeostasis and regeneration has been well established, the effects of topoisomerase-inhibiting anticancer agents remain largely unknown. - Materials and Methods - Human bone marrow MSCs were treated with topoisomerase I inhibitor irinotecan or topoisomerase II inhibitor etoposide, and survival and apoptosis levels were measured. The influence of topoisomerase inhibition on cellular morphology, adhesion and migration potential and the ability to differentiate was assessed. Additionally, the role of individual DNA double-strand break repair pathways in MSCs was investigated as a potential cellular mechanism of resistance to topoisomerase inhibitors. - Results - Human bone marrow MSCs were found relatively resistant to topoisomerase I and II inhibitors and show survival levels comparable to these of differentiated fibroblasts. Treatment with irinotecan or etoposide did not significantly influence cellular adhesion, migratory ability, surface marker expression or induction of apoptosis in human MSCs. The ability to differentiate was found preserved in MSCs after exposure to high doses of irinotecan or etoposide. MSCs were able to efficiently repair DNA double-strand breaks induced by topoisomerase inhibitors both by non-homologous end joining and homologous recombination pathways. - Conclusion - Our data demonstrate a topoisomerase-resistant phenotype of human MSCs that may at least in part be due to the stem cells' ability to efficiently remove DNA damage caused by these anticancer agents. The observed resistance of MSCs warrants further investigation of these cells as a potential therapeutic option for treating topoisomerase inhibitor-induced bone marrow damage.