Dendrimer Nanodevices and Gallic Acid as Novel Strategies to Fight Chemoresistance in Neuroblastoma Cells
Human neuroblastoma (NB), a pediatric tumor inclined to relapse, after an initial response to therapy, usually develops resistance. Since several chemotherapeutics exert anticancer effect by increasing reactive oxygen species (ROS), NB cells overproduce antioxidant compounds becoming drugs-resistant...
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MDPI AG
2020-06-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/10/6/1243 |
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| author | Silvana Alfei Barbara Marengo Guendalina Zuccari Federica Turrini Cinzia Domenicotti |
| author_facet | Silvana Alfei Barbara Marengo Guendalina Zuccari Federica Turrini Cinzia Domenicotti |
| author_sort | Silvana Alfei |
| collection | DOAJ |
| description | Human neuroblastoma (NB), a pediatric tumor inclined to relapse, after an initial response to therapy, usually develops resistance. Since several chemotherapeutics exert anticancer effect by increasing reactive oxygen species (ROS), NB cells overproduce antioxidant compounds becoming drugs-resistant. A strategy to sensitize NB cells to chemotherapy involves reducing their antioxidant defenses and inducing ROS overproduction. Concerning this, although affected by several issues that limit their clinical application, antioxidant/pro-oxidant polyphenols, such as gallic acid (GA), showed pro-oxidant anti-cancer effects and low toxicity for healthy cells, in several kind of tumors, not including NB. Herein, for the first time, free GA, two GA-dendrimers, and the dendrimer adopted as GA reservoir were tested on both sensitive and chemoresistant NB cells. The dendrimer device, administered at the dose previously found active versus sensitive NB cells, induced ROS-mediated death also in chemoresistant cells. Free GA proved a dose-dependent ROS-mediated cytotoxicity on both cell populations. Intriguingly, when administered in dendrimer formulations at a dose not cytotoxic for NB cells, GA nullified any pro-oxidant activity of dendrimer. Unfortunately, due to GA, nanoformulations were inactive on NB cells, but GA resized in nanoparticles showed considerable ability in counteracting, at low dose, ROS production and oxidative stress, herein induced by the dendrimer. |
| first_indexed | 2024-03-10T18:52:40Z |
| format | Article |
| id | doaj.art-bf69573ae11645dbbdbb96aed1d1ba31 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-10T18:52:40Z |
| publishDate | 2020-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-bf69573ae11645dbbdbb96aed1d1ba312023-11-20T05:01:35ZengMDPI AGNanomaterials2079-49912020-06-01106124310.3390/nano10061243Dendrimer Nanodevices and Gallic Acid as Novel Strategies to Fight Chemoresistance in Neuroblastoma CellsSilvana Alfei0Barbara Marengo1Guendalina Zuccari2Federica Turrini3Cinzia Domenicotti4Department of Pharmacy (DiFAR), University of Genoa, Viale Cembrano, 16148 Genoa, ItalyDepartment of Experimental Medicine—DIMES, University of Genoa, Via Alberti L.B., 16132 Genoa, ItalyDepartment of Pharmacy (DiFAR), University of Genoa, Viale Cembrano, 16148 Genoa, ItalyDepartment of Pharmacy (DiFAR), University of Genoa, Viale Cembrano, 16148 Genoa, ItalyDepartment of Experimental Medicine—DIMES, University of Genoa, Via Alberti L.B., 16132 Genoa, ItalyHuman neuroblastoma (NB), a pediatric tumor inclined to relapse, after an initial response to therapy, usually develops resistance. Since several chemotherapeutics exert anticancer effect by increasing reactive oxygen species (ROS), NB cells overproduce antioxidant compounds becoming drugs-resistant. A strategy to sensitize NB cells to chemotherapy involves reducing their antioxidant defenses and inducing ROS overproduction. Concerning this, although affected by several issues that limit their clinical application, antioxidant/pro-oxidant polyphenols, such as gallic acid (GA), showed pro-oxidant anti-cancer effects and low toxicity for healthy cells, in several kind of tumors, not including NB. Herein, for the first time, free GA, two GA-dendrimers, and the dendrimer adopted as GA reservoir were tested on both sensitive and chemoresistant NB cells. The dendrimer device, administered at the dose previously found active versus sensitive NB cells, induced ROS-mediated death also in chemoresistant cells. Free GA proved a dose-dependent ROS-mediated cytotoxicity on both cell populations. Intriguingly, when administered in dendrimer formulations at a dose not cytotoxic for NB cells, GA nullified any pro-oxidant activity of dendrimer. Unfortunately, due to GA, nanoformulations were inactive on NB cells, but GA resized in nanoparticles showed considerable ability in counteracting, at low dose, ROS production and oxidative stress, herein induced by the dendrimer.https://www.mdpi.com/2079-4991/10/6/1243Human neuroblastomagallic acid (GA)ROS-mediated anticancer effectpolyester dendrimersdendrimer nanoformulations |
| spellingShingle | Silvana Alfei Barbara Marengo Guendalina Zuccari Federica Turrini Cinzia Domenicotti Dendrimer Nanodevices and Gallic Acid as Novel Strategies to Fight Chemoresistance in Neuroblastoma Cells Nanomaterials Human neuroblastoma gallic acid (GA) ROS-mediated anticancer effect polyester dendrimers dendrimer nanoformulations |
| title | Dendrimer Nanodevices and Gallic Acid as Novel Strategies to Fight Chemoresistance in Neuroblastoma Cells |
| title_full | Dendrimer Nanodevices and Gallic Acid as Novel Strategies to Fight Chemoresistance in Neuroblastoma Cells |
| title_fullStr | Dendrimer Nanodevices and Gallic Acid as Novel Strategies to Fight Chemoresistance in Neuroblastoma Cells |
| title_full_unstemmed | Dendrimer Nanodevices and Gallic Acid as Novel Strategies to Fight Chemoresistance in Neuroblastoma Cells |
| title_short | Dendrimer Nanodevices and Gallic Acid as Novel Strategies to Fight Chemoresistance in Neuroblastoma Cells |
| title_sort | dendrimer nanodevices and gallic acid as novel strategies to fight chemoresistance in neuroblastoma cells |
| topic | Human neuroblastoma gallic acid (GA) ROS-mediated anticancer effect polyester dendrimers dendrimer nanoformulations |
| url | https://www.mdpi.com/2079-4991/10/6/1243 |
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