2020
DOI: 10.3390/ijms21186811
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Gene Expression Signature of Acquired Chemoresistance in Neuroblastoma Cells

Abstract: Drug resistance of childhood cancer neuroblastoma is a serious clinical problem. Patients with relapsed disease have a poor prognosis despite intense treatment. In the present study, we aimed to identify chemoresistance gene expression signatures in vincristine resistant neuroblastoma cells. We found that vincristine-resistant neuroblastoma cells formed larger clones and survived under reduced serum conditions as compared with non-resistant parental cells. To identify the possible mechanisms underlying vincris… Show more

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Cited by 5 publications
(8 citation statements)
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“…Whereas the sensitive IMR-32 cells displayed very high basal ROS levels, the less-responsive cell lines exhibited only low basal ROS levels, suggesting that cells with a high degree of basal oxidative stress respond better to the treatment (Figure 2c). To test this assumption, we analyzed a vincristine resistant and vincristine non-resistant neuroblastoma cell line pair, generated through long-term cultivation of the parental cell line in vincristine or solvent containing medium [40]. Consistent with our hypothesis, the chemotherapy resistant cell model displayed significantly increased ROS-levels, and in turn increased APR-246 sensitivity, when compared to its chemotherapy non-resistant control counterpart (Figure 2d,e).…”
Section: Apr-246 Impairs Oxygene Species Elimination and Basal Reactive Oxygen Species Level Indicate Apr-246 Sensitivitysupporting
confidence: 53%
See 1 more Smart Citation
“…Whereas the sensitive IMR-32 cells displayed very high basal ROS levels, the less-responsive cell lines exhibited only low basal ROS levels, suggesting that cells with a high degree of basal oxidative stress respond better to the treatment (Figure 2c). To test this assumption, we analyzed a vincristine resistant and vincristine non-resistant neuroblastoma cell line pair, generated through long-term cultivation of the parental cell line in vincristine or solvent containing medium [40]. Consistent with our hypothesis, the chemotherapy resistant cell model displayed significantly increased ROS-levels, and in turn increased APR-246 sensitivity, when compared to its chemotherapy non-resistant control counterpart (Figure 2d,e).…”
Section: Apr-246 Impairs Oxygene Species Elimination and Basal Reactive Oxygen Species Level Indicate Apr-246 Sensitivitysupporting
confidence: 53%
“…Vincristine resistant and non-resistant SK-N-BE(2)-C (passage 30 to 45, kindly provided by M. Michaelis, University of Kent, and J. Cinatl, Goethe University, Frankfurt am Main) were cultured using IMDM with L-Glutamine, 2 mM HEPES (Gibco, Thermo Fisher Scientific Inc., Waltham, MA, USA) supplemented with 10% FCS; for the resistant cells, 20 ng/mL vincristine was added to the medium. The cells were made to be resistant to vincristine-treatment through long-term cultivation in a vincristine containing medium [40].…”
Section: Cell Culturementioning
confidence: 99%
“…We can explain the results summarised above in terms of clonal competition. Our calibrated parameters and the experimental data we used for calibration [ 27 , 28 ] indicate that the resistant clone has a lower proliferation rate (drug resistance lowers fitness when the drug is absent): resistance to VCR, which confers no advantage on the resistant cells in the absence of VCR, comes at the expense of growth. When a population comprises fully sensitive and VCR-resistant cells, using CPM at its MTD fully exploits the sensitive clone, which is fitter than the VCR-resistant clone in the presence of CPM, to stop the VCR-resistant clone from expanding, thus helping CPM kill the VCR-resistant cells.…”
Section: Resultsmentioning
confidence: 99%
“…The resistance levels with respect to vincristine and cyclophosphamide are denoted by i and j , respectively. In order to inform the model, experimental data regarding neuroblastoma cells’ responses to vincristine and cyclophosphamide were aggregated from different sources [ 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 ]. First, armed with in vitro data about the growth kinetics of neuroblastoma cell lines with different levels of drug resistance, collected in the absence of treatment, we calibrated the growth rates ( ).…”
Section: Quick Guide To Methodologymentioning
confidence: 99%
“…Main available treatment strategy for NB patients is chemotherapy followed by surgical resection. Cisplatin (DDP) and doxorubicin (ADM) are common chemotherapeutics for NB ( Jemaà et al, 2020 ). However, the clinical efficacy of these drugs is limited by chemoresistance, which is the main cause of the treatment failure in NB patients ( Rodrigo et al, 2021 ).…”
Section: Introductionmentioning
confidence: 99%