Effect of paclitaxel in gefitinib-resistant non-small cell lung cancer (NSCLC) treatment during the COVID-19 pandemic
Clinical Cancer Research
; 27(6 SUPPL 1), 2021.
Article
in English
| EMBASE | ID: covidwho-1816896
ABSTRACT
Background:
For cancer patients' treatment, coronavirus disease 2019 (COVID-19) poses a great challenge. COVID-19 presents as a severe respiratory infection in aging individuals, including patients with lung cancer. COVID-19 may be linked to the progression of aggressive lung cancer. Conversely, chemotherapy's side effects, such as chemotherapy resistance, acceleration of cellular senescence, could worsen COVID-19. Considering the above-mentioned facts, our present work was aimed to investigate the role of paclitaxel (a chemotherapy drug) in cell proliferation, apoptosis, and cellular senescence of gefitinib-resistant NSCLC cells (PC9-MET) and reveal the underlying mechanisms.Methods:
PC9-MET cells were treated with paclitaxel for 72 h and then evaluated by cell viability assay, DAPI staining, Giemsa staining, apoptosis assay, ROS assay, SA-ß-Gal staining, TUNEL assay and western blotting.Results:
Our results revealed that paclitaxel significantly reduced the viability of PC9-MET cells and induced morphological signs of apoptosis. The apoptotic effects of paclitaxel were observed by increased levels of cleaved caspase-3, cleaved caspase-9 and cleaved PARP. Additionally, paclitaxel increased ROS production, leading to DNA damage. Importantly, paclitaxel eliminated cellular senescence, which was observed by SA-ß-Gal staining.Conclusion:
In light of these findings, paclitaxel could be a promising anticancer drug and could offer a new therapeutic strategy for gefitinib-resistant non-small cell lung cancer (NSCLC) during the COVID-19 pandemic.
antineoplastic agent; caspase 3; caspase 9; endogenous compound; gefitinib; nicotinamide adenine dinucleotide adenosine diphosphate ribosyltransferase; paclitaxel; acceleration; apoptosis; cancer therapy; cell aging; cell proliferation; cell viability; cell viability assay; chemotherapy; conference abstract; controlled study; coronavirus disease 2019; DNA damage; drug resistance; drug therapy; drug toxicity; Giemsa stain; human; human cell; in vitro study; non small cell lung cancer; pandemic; PC-9 cell line; TUNEL assay; Western blotting
Full text:
Available
Collection:
Databases of international organizations
Database:
EMBASE
Type of study:
Experimental Studies
Language:
English
Journal:
Clinical Cancer Research
Year:
2021
Document Type:
Article
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