2026-06-07T13:53:25Zhttps://docta.ucm.es/rest/oai/request

oai:docta.ucm.es:20.500.14352/121872024-04-17T12:35:23Zcom_20.500.14352_14col_20.500.14352_15

Docta Complutense author Cicuéndez Maroto, Mónica author Flores, Joana author Oliveira, Helena author Portolés Pérez, María Teresa author Vallet Regí, María Dulce Nombre author Vila, Mercedes author Duarte, Lola F 2023-06-17T12:28:19Z 2023-06-17T12:28:19Z 2018-05-18 0928-4931 10.1016/j.msec.2018.05.057 https://hdl.handle.net/20.500.14352/12187 https://www.journals.elsevier.com/materials-science-and-engineering-c http://www.ucm.es/valletregigroup Nanographene oxide (nGO)-mediated hyperthermia has been increasingly investigated as a localized, minimally invasive anticancer therapeutic approach. Near InfraRed (NIR) light irradiation for inducing hyperthermia is particularly attractive, because biological systems mostly lack chromophores that absorb in this spectral window, facilitating the selective heating and destruction of cells which have internalized the NIR absorbing- nanomaterials. However, little is known about biological eﬀects accompanying nGO-mediated hyperthermia at cellular and molecular levels. In this work, well-characterized pegylated nGO sheets with a hydrodynamic size of 300 nm were incubated with human Saos-2 osteosarcoma cells for 24 h and their internalization veriﬁed by ﬂow cytometry and confocal microscopy. No eﬀect on cell viability was observed after nGO uptake by Saos-2 cells. However, a proliferation delay was observed due to the presence of nGO sheets in the cytoplasm. 1H NMR metabolomics was employed to screen for changes in the metabolic proﬁle of cells, as this could help to improve understanding of cellular responses to nanomaterials and provide new endpoint markers of eﬀect. Cells inter- nalizing nGO sheets showed noticeable changes in several metabolites compared to control cells, including decreased levels of several amino acids, taurine and creatine and increased levels of phosphocholine and ur- idine/adenosine nucleotides. After NIR irradiation, cells showed decreases in glutamate and uridine nucleotides, together with increases in glycerophosphocholine and adenosine monophosphate. Overall, this study has shown that the cellular metabolome sensitively responded to nGO exposure and nGO-mediated hyperthermia and that NMR metabolomics is a powerful tool to investigate treatment responses. eng Metabolomic response of osteosarcoma cells to nanographene oxide-mediated hyperthermia. journal article URL https://docta.ucm.es/bitstreams/f36fe570-ca77-4608-a878-e5e93f541d05/download File MD5 524e2eeca07d4e1d1981169f199c309b 1613724 application/pdf Proofs_MSC_8615 (2).pdf URL https://docta.ucm.es/bitstreams/5f02e0a2-18da-4d28-9a11-cf6affd915c8/download File MD5 28f4ded89fb804636c63816ca532d6e7 57637 text/plain Proofs_MSC_8615 (2).pdf.txt