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Epigenetic therapy strengthens immune synapses to potentiate susceptibility of lung cancer cells to adoptive γδ T cell therapy [seq]

ABSTRACT: Purpose: Epigenetic drug DNA methyltransferase inhibitors (DNMTis) are immunomodulating agents that may sensitize cancer cells to immune cell attack. However, it is still unclear how DNMTi affects cancer cells to the killing by immune cells. We therefore try to uncover the alternations of genomic DNA methylation, chromatin accessibility and transcriptomes after DNMTi treatment of cancer cells. Methods: Six human lung cancer cell lines (A549, H1299, CL1-0, CL1-5, H1792, PC9) treated without (Mock) or with 100 nM decitabine (DAC) for 72 hours followed by growing in drug-free medium for three days were subjected to mRNA-seq and Omni-ATAC-seq analyses. Results: mRNA-seq and ATAC-seq analyses reveal upregulation of actin and intermediate filament, and downregulation of microtubule modules by decitabine in human lung cancer cell lines. Conclusion: Decitabine primes lung cancer cells to γδ T cell-mediated killing through regulating cytoskeleton associated genes potentially involved in immune synapse formation.

ORGANISM(S): Homo sapiens

PROVIDER: GSE145663 | GEO | 2021/02/16

REPOSITORIES: GEO

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DNA methylome analysis of DNA methyltransferase inhibitor reagent-treated lung cancer cells

Project description:Purpose: Epigenetic drug DNA methyltransferase inhibitors (DNMTis) are immunomodulating agents that may sensitize cancer cells to immune cell attack. However, it is still unclear how DNMTi affects cancer cells to the killing by immune cells. We therefore try to uncover the alternations of genomic DNA methylation after DNMTi treatment of cancer cells. Methods: Six human lung cancer cell lines (A549, H1299, CL1-0, CL1-5, H1792, PC9) before (Mock) and after (DAC) treatement with 100 nM decitabine (DAC) for 72 hours followed by growing in drug-free medium for three days were subjected to Illumina MethylationEPIC microarray analysis. Results: DNA methylome analysis reveals DNMTi-induced DNA demethylation at transcription start site (TSS)-flanking regions of several actin, intermediate filament and microtubule molecules in human lung cancer cell lines. Conclusion: Decitabine primes lung cancer cells to γδ T cell-mediated killing through regulating cytoskeleton associated genes potentially involved in immune synapse formation.

2021-02-16 | GSE145588 | GEO

DNMT and HDAC inhibition induces immunogenic neoantigens from human endogenous retroviral element-derived transcripts

Project description:Immunotherapies targeting cancer-specific neoantigens have revolutionized the treatment of cancer patients. Recent evidence suggests that epigenetic therapies synergize with immunotherapies, mediated bythe de-repression of endogenous retroviral element (ERV)-encoded promoters, and the initiation of transcription. Here, we use deep RNA sequencing from cancer cell lines treated with DNA methyltransferase inhibitors (DNMTi) and/or Histone deacetylase transferase inhibitors (HDACi), to assemble a de novo transcriptome and identified 3,023 ERV-derived, treatment-induced novel polyadenylated transcripts (TINPATs), encoding for 61,426 open reading frames. Using Immunopeptidomics, we further demonstrate the human leukocyte antigen (HLA) presentation of treatment-induced neoepitopes (t-neoepitopes) derived from TINPATs. We illustrate the potential of the identified t-neoepitopes to elicit a T-cell response and cancer cell killing. The presence of t-neoepitopes was further verified in AML patient samples 48/96 h after in vivo treatment with the DNMT inhibitor Decitabine. Our findings highlight a novel mechanism of ERV-derived neoantigens in epigenetic and immune therapies.

2023-08-18 | PXD035750 | Pride

Expression data from CL1-0 and CL1-5 lung cancer cell line.

Project description:A lung cancer cell model of invasive transformation was developed to select progressively invasive cell populations from a parental cell line of human lung adenocarcinoma, CL1. Five progressive sub-clones namely, CL1-1, CL1-2, CL1-3 CL1-4, and CL1-5 were selected using transwell and displayed increasing invasion potential (Chu et al, 1997). Here, we used microarrays to analyze and compare gene expression profiles between CL1-0 and CL1-5 for the identification of invasion/metastasis associated gene signatures. CL1-0 and CL1-5 lung cancer cell lines were used for RNA extraction and hybridization on Affymetrix microarrays. A total of 6 chips were used for microarray analysis including three biological repeats from CL1-0 and three biological repeats from CL1-5.

2012-12-11 | E-GEOD-42407 | biostudies-arrayexpress

Expression data from CL1-0 and CL1-5 lung cancer cell line.

2012-12-11 | GSE42407 | GEO

Drug repurposing unveils new combinatorial treatments to treat mutant KRAS lung cancer

Project description:We report data on a drug combination with synergistic antitumor effect in KRAS-driven lung cancer. We used RNAseq to characterize the transcriptional changes elicited by each drug in a mutant KRAS lung cancer cell lines (H1792)

2023-08-10 | GSE161218 | GEO

dcEF-regulated gene expression of human lung cancer cells

Project description:Highly metastatic cancer cells have been observed to move directionally in response to direct current (dc) electric fields (EFs) of physiological strength. The phenomenon, which is called electrotaxis or galvanotaxis, suggests the involvement of physiological EF in cancer metastasis. To explore this conjecture, we compared the influence of dcEF on gene expressions of a highly invasive (CL1-5) and a low invasive (CL1-0) lung cancer cell lines. Gene expression of human lung cancer cells with (experimental samples) or without (control samples) dcEF stimulation in physiological strength was analyzed. Two cell lines, CL1-0 and CL1-5, were treated with the same condition and compared in this study. Each condition has three biological replicates for each cell line.

2013-01-01 | E-GEOD-33845 | biostudies-arrayexpress

The gene regulation of SPANXA in lung cancer

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2016-08-12 | GSE72323 | GEO

The gene regulation of FAM198B in lung cancer

Project description:FAM198B is identified as a novel tumor supressor gene in lung adenocarcinoma. This study aim to investigate the effects of the glycoprotein protein, FAM198B, on the biological behavior and global gene expression profiles of lung cancer cells. Expression microarray and bioinformatics analyses indicated that FAM198B mainly regulated ERK-mediated MMP1 pathway in CL1-5 cells, which results in tumor metastasus inhibition. We used microarrays to identify the global gene alterarion in lung cancer CL1-5 cells after ectopic expressing FAM198B

2018-11-23 | GSE75320 | GEO

SILAC-based quantitative proteomics analysis of lung cancer cells treated with a DNMTi drug decitabine

Project description:DNA methyltransferase inhibitors (DNMTi) has been shown to modulate pathways related to antigen processing/presentation, human leukocyte antigens (HLA), and interferon responses across different cancer types on the transcriptomic level (Li et al., 2014; Wrangle et al., 2013). Nevertheless, these transcriptomic changes may not fully reflect the alterations of surface proteins that provoke susceptibility to immunotherapy. Thus, we sought to obtain a comprehensive profile of surface proteins altered by decitabine (DAC) through isolating cell surface proteins from A549 human lung cancer cells before and after DAC treatment using EZ-link Sulfo-NHS-SS-Biotin-assisted biotinylation method, followed by SILAC-based quantitative proteomics approach.

2020-02-21 | MSV000084997 | MassIVE

Expression data from AK4 overexpression in CL1-0 lung cancer cell line and AK4 knockdown in CL1-5 lung cancer cell line

Project description:We demonstrate that AK4 down-regulation shRNAs significantly reduced cell migration and invasion in highly invasive lung cancer cell lines in vitro, as well as in lung metastases in vivo We used microarrays to analyze the AK4 regulated gene expression underlying invasion-metastasis cascade. CL1-0 lung adenocarcinoma cells with AK4 overexpression and CL1-5 cells with AK4 knockdown were selected for RNA extraction and hybridization on Affymetrix microarrays.

2012-12-03 | E-GEOD-37903 | biostudies-arrayexpress

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