Comprehensive analysis of circular RNA expression profiles in cisplatin-resistant non-small cell lung cancer cell lines

Abstract Platinum-based drugs such as cisplatin are widely used in combination chemotherapy for non-small cell lung cancer (NSCLC) owing to their high clinical response rate; however, acquired resistance to cisplatin is eventually inevitable. Circular RNAs (circRNAs) are involved in the development of diverse types of cancers, but their connection to cisplatin-resistance in NSCLC has not been studied. In the present study, two cisplatin-resistant NSCLC cell lines (A549/DDP and PC9/DDP) were established by gradually increasing concentrations of cisplatin in the media. The resulting cell lines possessed high resistance to cisplatin and strong proliferation, migration, and colony formation abilities compared to the parental cells. Microarray analysis identified 19,161 circRNAs that were dysregulated in cisplatin-resistant cell lines (fold change abs>2), including 11,915 up-regulated and 7246 down-regulated circRNAs. The expression of the top five up-regulated and down-regulated circRNAs was validated using real-time quantitative polymerase chain reaction. A circRNA–micro RNA (miRNA) network of the top 20 dysregulated circRNAs and their predicted miRNAs was constructed using Cytoscape. Gene ontology and Kyoto Encyclopedia of Genes and Genomes pathway analyses revealed that the host genes of the identified circRNAs were involved in the regulation of MAP kinase kinase kinase kinase activity, 6-phosphofructo-2-kinase activity, focal adhesion, ErbB signaling, and ECM-receptor interactions, which may contribute to cisplatin resistance in NSCLC. In summary, this is the first report on circRNA profiling in cisplatin-resistant NSCLC cells and it provides new potential targets for the reversal of cisplatin resistance in NSCLC.

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Expression Profiles of microRNAs in Drug-Resistant Non-Small Cell Lung Cancer Cell Lines Using microRNA Sequencing

Cellular Physiology and Biochemistry ◽

10.1159/000495921 ◽

2018 ◽

Vol 51 (6) ◽

pp. 2509-2522 ◽

Cited By ~ 9

Author(s):

Shousen Hu ◽

Yongliang Yuan ◽

Zhizhen Song ◽

Dan Yan ◽

Xiangzhen Kong

Keyword(s):

Lung Cancer ◽

Drug Resistance ◽

Small Cell Lung Cancer ◽

Cell Lines ◽

Cell Lung Cancer ◽

Expression Profiles ◽

Small Cell ◽

Nsclc Cell ◽

Drug Resistant ◽

Small Cell Lung

Background/Aims: Drug resistance remains a main obstacle to the treatment of non- small cell lung cancer (NSCLC). The aim of this study was to identify the expression profiles of microRNAs (miRNAs) in drug-resistant NSCLC cell lines. Methods: The expression profiles of miRNAs in drug-resistant NSCLC cell lines were examined using miRNA sequencing, and the common dysregulated miRNAs in these cell lines were identified and analyzed by bioinformatics methods. Results: A total of 29 upregulated miRNAs and 36 downregulated miRNAs were found in the drug-resistant NSCLC cell lines, of which 26 upregulated and 36 downregulated miRNAs were found to be involved in the Ras signaling pathway. The expression levels, survival analysis, and receiver operating characteristic curve of the dysregulated miRNAs based on The Cancer Genome Atlas database for lung adenocarcinoma showed that hsa-mir-192, hsa-mir-1293, hsa-mir-194, hsa-mir-561, hsa-mir-205, hsa-mir-30a, and hsa-mir-30c were related to lung cancer, whereas only hsa-mir-1293 and hsa-mir-561 were not involved in drug resistance. Conclusion: The results of this study may provide novel biomarkers for drug resistance in NSCLC and potential therapies for overcoming drug resistance, and may also reveal the potential mechanisms underlying drug resistance in this disease.

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ErbB-3 mediates phosphoinositide 3-kinase activity in gefitinib-sensitive non-small cell lung cancer cell lines

Proceedings of the National Academy of Sciences ◽

10.1073/pnas.0409773102 ◽

2005 ◽

Vol 102 (10) ◽

pp. 3788-3793 ◽

Cited By ~ 369

Author(s):

J. A. Engelman ◽

P. A. Janne ◽

C. Mermel ◽

J. Pearlberg ◽

T. Mukohara ◽

...

Keyword(s):

Lung Cancer ◽

Small Cell Lung Cancer ◽

Cell Lines ◽

Cancer Cell ◽

Cell Lung Cancer ◽

Kinase Activity ◽

Small Cell ◽

Lung Cancer Cell ◽

Small Cell Lung ◽

Phosphoinositide 3 Kinase

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Cisplatin resistance induced by decreased apoptotic activity in non-small-cell lung cancer cell lines

Cell Biology International ◽

10.1042/cbi20110329 ◽

2012 ◽

Vol 36 (3) ◽

pp. 261-265 ◽

Cited By ~ 20

Author(s):

Vildan B. Cetintas ◽

Ali S. Kucukaslan ◽

Buket Kosova ◽

Aslı Tetik ◽

Nur Selvi ◽

...

Keyword(s):

Lung Cancer ◽

Small Cell Lung Cancer ◽

Cell Lines ◽

Cancer Cell ◽

Cell Lung Cancer ◽

Cisplatin Resistance ◽

Small Cell ◽

Lung Cancer Cell ◽

Small Cell Lung ◽

Apoptotic Activity

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Reduced LINC00467 Elevates microRNA-125a-3p to Suppress Cisplatin Resistance in Non-Small Cell Lung Cancer Through Inhibiting Sirtuin 6 and Inactivating the ERK1/2 Signaling Pathway

SSRN Electronic Journal ◽

10.2139/ssrn.3572847 ◽

2020 ◽

Author(s):

Feng Xue ◽

Chuan Yang ◽

Keli Yun ◽

Cailing Jiang ◽

Rui Ca ◽

...

Keyword(s):

Lung Cancer ◽

Small Cell Lung Cancer ◽

Signaling Pathway ◽

Cell Lung Cancer ◽

Cisplatin Resistance ◽

Small Cell ◽

Small Cell Lung

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The Key microRNAs Regulated the Development of Non-small Cell Lung Cancer by Targeting TGF-β-induced epithelial–mesenchymal Transition

Combinatorial Chemistry & High Throughput Screening ◽

10.2174/1386207322666190410151945 ◽

2019 ◽

Vol 22 (4) ◽

pp. 238-244 ◽

Cited By ~ 2

Author(s):

Gang Chen ◽

Bo Ye

Keyword(s):

Lung Cancer ◽

Small Cell Lung Cancer ◽

Cell Lines ◽

Cell Lung Cancer ◽

Small Cell ◽

Nsclc Cell ◽

Normal Lung ◽

Migration And Invasion ◽

Small Cell Lung ◽

Mesenchymal Transition

Purpose: Epithelial-to-Mesenchymal Transition (EMT) was reported to play a key role in the development of Non-Small Cell Lung Cancer (NSCLC). The process of EMT is regulated by the changes of miRNAs expression. However, it is still unknown which miRNA changed the most in the process of canceration and whether these changes played a role in tumor development. Methods: A total of 36 SCLC patients treated in our hospital between 11th, 2015 and 10th, 2017 were enrolled. The samples of cancer tissues and paracancer tissues of patients were collected and analyzed. Then, the miRNAs in normal lung cells and NSCLC cells were also analyzed. In the presence of TGF-β, we transfected the miRNA mimics or inhibitor into NSCLC cells to investigate the role of the significantly altered miRNAs in cell migration and invasion and in the process of EMT. Results: MiR-330-3p was significantly up-regulated in NSCLC cell lines and tissues and miRNA- 205 was significantly down-regulated in NSCLC cell lines and NSCLC tissues. Transfected miRNA-205 mimics or miRMA-330-3p inhibitor inhibited the migration and invasion of NCIH1975 cell and restrained TGF-β-induced EMT in NSCLC cells. Conclusion: miRNA-330-3p and miRNA-205 changed the most in the process of canceration in NSCLC. Furthermore, miR-330-3p promoted cell invasion and metastasis in NSCLC probably by promoting EMT and miR-205 could restrain NSCLC likely by suppressing EMT.

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Midazolam increases cisplatin-sensitivity in non-small cell lung cancer (NSCLC) via the miR-194-5p/HOOK3 axis

Cancer Cell International ◽

10.1186/s12935-021-02104-6 ◽

2021 ◽

Vol 21 (1) ◽

Author(s):

Tingting Sun ◽

Jing Chen ◽

Xuechao Sun ◽

Guonian Wang

Keyword(s):

Lung Cancer ◽

Cell Proliferation ◽

Small Cell Lung Cancer ◽

Cell Lung Cancer ◽

Cell Apoptosis ◽

Cisplatin Resistance ◽

Small Cell ◽

Luciferase Reporter ◽

Small Cell Lung ◽

Cisplatin Sensitivity

Abstract Backgrounds As previously reported, midazolam anesthesia exerts tumor-suppressing effects in non-small cell lung cancer (NSCLC), but the regulating effects of this drug on cisplatin-resistance in NSCLC have not been studied. Thus, we designed this study to investigate this issue and preliminarily delineate the potential molecular mechanisms. Methods We performed MTT assay and trypan blue staining assay to measure cell proliferation and viability. Cell apoptosis was examined by FCM. qRT-PCR and immunoblotting were performed to determine the expression levels of genes. The targeting sites between genes were predicted by bioinformatics analysis and were validated by dual-luciferase reporter gene system assay. Mice tumor-bearing models were established and the tumorigenesis was evaluated by measuring tumor weight and volume. Immunohistochemistry (IHC) was used to examine the pro-proliferative Ki67 protein expressions in mice tumor tissues. Results The cisplatin-resistant NSCLC (CR-NSCLC) cells were treated with high-dose cisplatin (50 μg/ml) and low-dose midazolam (10 μg/ml), and the results showed that midazolam suppressed cell proliferation and viability, and promoted cell apoptosis in cisplatin-treated CR-NSCLC cells. In addition, midazolam enhanced cisplatin-sensitivity in CR-NSCLC cell via modulating the miR-194-5p/hook microtubule-tethering protein 3 (HOOK3) axis. Specifically, midazolam upregulated miR-194-5p, but downregulated HOOK3 in the CR-NSCLC cells, and further results validated that miR-194-5p bound to the 3’ untranslated region (3’UTR) of HOOK3 mRNA for its inhibition. Also, midazolam downregulated HOOK3 in CR-NSCLC cells by upregulating miR-194-5p. Functional experiments validated that both miR-194-5p downregulation and HOOK3 upregulation abrogated the promoting effects of midazolam on cisplatin-sensitivity in CR-NSCLC cells. Conclusions Taken together, this study found that midazolam anesthesia reduced cisplatin-resistance in CR-NSCLC cells by regulating the miR-194-5p/HOOK3 axis, implying that midazolam could be used as adjuvant drug for NSCLC treatment in clinical practices.

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Small-molecule inhibition of APE1 induces apoptosis, pyroptosis, and necroptosis in non-small cell lung cancer

Cell Death and Disease ◽

10.1038/s41419-021-03804-7 ◽

2021 ◽

Vol 12 (6) ◽

Author(s):

Kaili Long ◽

Lili Gu ◽

Lulu Li ◽

Ziyu Zhang ◽

Enjie Li ◽

...

Keyword(s):

Lung Cancer ◽

Dna Damage ◽

Small Cell Lung Cancer ◽

Cell Lines ◽

Small Molecule ◽

Cell Lung Cancer ◽

Small Cell ◽

Nsclc Cell ◽

Molecular Compound ◽

Small Cell Lung

AbstractApurinic/apyrimidinic endonuclease 1 (APE1) plays a critical role in the base excision repair (BER) pathway, which is responsible for the excision of apurinic sites (AP sites). In non-small cell lung cancer (NSCLC), APE1 is highly expressed and associated with poor patient prognosis. The suppression of APE1 could lead to the accumulation of unrepaired DNA damage in cells. Therefore, APE1 is viewed as an important marker of malignant tumors and could serve as a potent target for the development of antitumor drugs. In this study, we performed a high-throughput virtual screening of a small-molecule library using the three-dimensional structure of APE1 protein. Using the AP site cleavage assay and a cell survival assay, we identified a small molecular compound, NO.0449-0145, to act as an APE1 inhibitor. Treatment with NO.0449-0145 induced DNA damage, apoptosis, pyroptosis, and necroptosis in the NSCLC cell lines A549 and NCI-H460. This inhibitor was also able to impede cancer progression in an NCI-H460 mouse model. Moreover, NO.0449-0145 overcame both cisplatin- and erlotinib-resistance in NSCLC cell lines. These findings underscore the importance of APE1 as a therapeutic target in NSCLC and offer a paradigm for the development of small-molecule drugs that target key DNA repair proteins for the treatment of NSCLC and other cancers.

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Predicting ROR1/BCL2 combination targeted therapy of small cell carcinoma of the lung

Cell Death and Disease ◽

10.1038/s41419-021-03855-w ◽

2021 ◽

Vol 12 (6) ◽

Author(s):

Walter Z. Wang ◽

Konstantin Shilo ◽

Joseph M. Amann ◽

Alyssa Shulman ◽

Mohammad Hojjat-Farsangi ◽

...

Keyword(s):

Lung Cancer ◽

Targeted Therapy ◽

Small Cell Lung Cancer ◽

Cell Lines ◽

Cell Lung Cancer ◽

Therapeutic Target ◽

Small Cell ◽

Orphan Receptor ◽

Small Cell Lung ◽

Sclc Patient

AbstractSmall cell lung cancer (SCLC) remains a deadly form of cancer, with a 5-year survival rate of less than 10 percent, necessitating novel therapies. Receptor tyrosine kinase-like orphan receptor 1 (ROR1) is an oncofetal protein that is emerging as a therapeutic target and is co-expressed with BCL2 in multiple tumor types due to microRNA coregulation. We hypothesize that ROR1-targeted therapy is effective in small cell lung cancer and synergizes with therapeutic BCL2 inhibition. Tissue microarrays (TMAs) and formalin-fixed paraffin-embedded (FFPE) SCLC patient samples were utilized to determine the prevalence of ROR1 and BCL2 expression in SCLC. Eight SCLC-derived cell lines were used to determine the antitumor activity of a small molecule ROR1 inhibitor (KAN0441571C) alone and in combination with the BCL2 inhibitor venetoclax. The Chou-Talalay method was utilized to determine synergy with the drug combination. ROR1 and BCL2 protein expression was identified in 93% (52/56) and 86% (48/56) of SCLC patient samples, respectively. Similarly, ROR1 and BCL2 were shown by qRT-PCR to have elevated expression in 79% (22/28) and 100% (28/28) of SCLC patient samples, respectively. KAN0441571C displayed efficacy in 8 SCLC cell lines, with an IC50 of 500 nM or less. Synergy as defined by a combination index of <1 via the Chou-Talalay method between KAN0441571C and venetoclax was demonstrated in 8 SCLC cell lines. We have shown that ROR1 inhibition is synergistic with BCL2 inhibition in SCLC models and shows promise as a novel therapeutic target in SCLC.

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