scholarly journals Gene Expression and Transcriptome Profiling of Changes in a Cancer Cell Line Post-Exposure to Cadmium Telluride Quantum Dots: Possible Implications in Oncogenesis

Dose-Response ◽  
2021 ◽  
Vol 19 (2) ◽  
pp. 155932582110198
Author(s):  
Mohammed S. Aldughaim ◽  
Mashael R. Al-Anazi ◽  
Marie Fe F. Bohol ◽  
Dilek Colak ◽  
Hani Alothaid ◽  
...  
Keyword(s):  
Gene Expression ◽  
Quantum Dots ◽  
Cancer Cells ◽  
Cadmium Telluride ◽  
Cancer Progression ◽  
Expression Profiles ◽  
Gene Expression Profiles ◽  
Dependent Manner ◽  
Cdte Qds ◽  
Cadmium Telluride Quantum Dots

Cadmium telluride quantum dots (CdTe-QDs) are acquiring great interest in terms of their applications in biomedical sciences. Despite earlier sporadic studies on possible oncogenic roles and anticancer properties of CdTe-QDs, there is limited information regarding the oncogenic potential of CdTe-QDs in cancer progression. Here, we investigated the oncogenic effects of CdTe-QDs on the gene expression profiles of Chang cancer cells. Chang cancer cells were treated with 2 different doses of CdTe-QDs (10 and 25 μg/ml) at different time intervals (6, 12, and 24 h). Functional annotations helped identify the gene expression profile in terms of its biological process, canonical pathways, and gene interaction networks activated. It was found that the gene expression profiles varied in a time and dose-dependent manner. Validation of transcriptional changes of several genes through quantitative PCR showed that several genes upregulated by CdTe-QD exposure were somewhat linked with oncogenesis. CdTe-QD-triggered functional pathways that appear to associate with gene expression, cell proliferation, migration, adhesion, cell-cycle progression, signal transduction, and metabolism. Overall, CdTe-QD exposure led to changes in the gene expression profiles of the Chang cancer cells, highlighting that this nanoparticle can further drive oncogenesis and cancer progression, a finding that indicates the merit of immediate in vivo investigation.

Tumor-Associated Macrophages: The Double-Edged Sword in Cancer Progression

2005 ◽  
Vol 23 (5) ◽  
pp. 953-964 ◽  
Author(s):  
Jeremy J.W. Chen ◽  
Yi-Chen Lin ◽  
Pei-Li Yao ◽  
Ang Yuan ◽  
Hsang-Yu Chen ◽  
...  
Keyword(s):  
Gene Expression ◽  
Lung Cancer ◽  
Cancer Cells ◽  
Cancer Progression ◽  
Expression Profiles ◽  
Gene Expression Profiles ◽  
Lung Cancer Cells ◽  
Macrophage Density ◽  
Inflammatory Drugs ◽  
Microvessel Counts

Purpose Inflammation plays a critical role in cancer progression. In this study we investigate the pro-tumorigenic activities and gene expression profiles of lung cancer cells after interaction with macrophages. Materials and Methods We measured intratumoral microvessel counts and macrophage density in 41 lung cancer tumor specimens and correlated these with the patients' clinical outcome. The interaction between macrophages and cancer cell lines was assessed using a transwell coculture system. The invasive potential was evaluated by in vitro invasion assay. The matrix-degrading activity was assayed by gelatin zymography. The microarray was applied to a large-scale analysis of the genes involved in the interaction, as well as to monitor the gene expression profiles of lung cancer cells responding to anti-inflammatory drugs in cocultures. Results The macrophage density positively correlated with microvessel counts and negatively correlated with patient relapse-free survival (P < .05). After coculture with macrophages, lung cancer cell lines exhibited higher invasive potentials and matrix-degrading activities. We identified 50 genes by microarray that were upregulated more than two-fold in cancer cells after coculture. Northern blot analyses confirmed some gene expression such as interleukin-6, interleukin-8, and matrix metalloproteinase 9. The two-dimensional hierarchical clustering also demonstrated that the gene expression profiles of lung cancer cells responding to various anti-inflammatory drugs in cocultures are distinct. Conclusion The interaction of lung cancer cells and macrophages can promote the invasiveness and matrix-degrading activity of cancer cells. Our results also suggest that a great diversity of gene expression occurs in this interaction, which may assist us in understanding the process of cancer metastasis.

scholarly journals 1100: Gene Expression Profiles of Doxazosin-Treated LNCaP Prostate Cancer Cells

2004 ◽  
Vol 171 (4S) ◽  
pp. 290-290
Author(s):  
José M. Arencibia ◽  
Mónica Del Río ◽  
Ana Bonnin ◽  
Mónica López-Barahona
Keyword(s):  
Gene Expression ◽  
Prostate Cancer ◽  
Cancer Cells ◽  
Expression Profiles ◽  
Gene Expression Profiles ◽  
Prostate Cancer Cells

Heparin sodium-selective ‘on–off’ and lysine-selective ‘off–on’ fluorescence switching of cadmium telluride quantum dots and their analytical applications

2016 ◽  
Vol 8 (2) ◽  
pp. 453-459 ◽  
Author(s):  
Hong Zhi Zhang ◽  
Rong Sheng Li ◽  
Ni Wang ◽  
Li Qi ◽  
Cheng Zhi Huang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Hydrogen Bonding ◽  
Fluorescence Quenching ◽  
Cadmium Telluride ◽  
Electrostatic Interaction ◽  
Heparin Sodium ◽  
Strong Electrostatic Interaction ◽  
Cdte Qds ◽  
Fluorescence Switching ◽  
Cadmium Telluride Quantum Dots

The fluorescence quenching of CdTe QDs could be induced by heparin sodium via hydrogen bonding, which was then recovered by lysine through a strong electrostatic interaction.

scholarly journals Combinatorial targeting of MTHFD2 and PAICS in purine synthesis as a novel therapeutic strategy

2019 ◽  
Vol 10 (11) ◽  
Author(s):  
Chantal Hoi Yin Cheung ◽  
Chia-Lang Hsu ◽  
Chao-Yin Tsuei ◽  
Tzu-Ting Kuo ◽  
Chen-Tsung Huang ◽  
...  
Keyword(s):  
Gene Expression ◽  
Cell Proliferation ◽  
Cancer Progression ◽  
Expression Profiles ◽  
Neuroblastoma Cell ◽  
Neuroblastoma Cells ◽  
Gene Expression Profiles ◽  
Migration Ability ◽  
Purine Synthesis ◽  
One Carbon Metabolism

Abstract MYCN-amplified (MNA) neuroblastoma is an aggressive neural crest-derived pediatric cancer. However, MYCN is indispensable for development and transcriptionally regulates extensive network of genes. Integrating anti-MYCN ChIP-seq and gene expression profiles of neuroblastoma patients revealed the metabolic enzymes, MTHFD2 and PAICS, required for one-carbon metabolism and purine biosynthesis were concomitantly upregulated, which were more susceptible to metastatic neuroblastoma. Moreover, we found that MYCN mediated the folate cycle via MTHFD2, which contributed one-carbon unit to enhance purine synthesis, and further regulated nucleotide production by PAICS in response to cancer progression. Dual knockdown of the MYCN-targeted gene pair, MTHFD2 and PAICS, in MNA neuroblastoma cells synergically reduced cell proliferation, colony formation, migration ability, and DNA synthesis. By systematically screening the compound perturbagens, the gene expression levels of MTHFD2 and PAICS were specifically suppressed by anisomycin and apicidin across cell lines, and our co-treatment results also displayed synergistic inhibition of MNA neuroblastoma cell proliferation. Collectively, targeting a combination of MYCN-targeted genes that interrupts the interconnection of metabolic pathways may overcome drug toxicity and improve the efficacy of current therapeutic agents in MNA neuroblastoma.

scholarly journals Electroacupuncture Improves Trinitrobenzene Sulfonic Acid-Induced Colitis, Evaluated by Transcriptomic Study

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Tin-Yun Ho ◽  
Hsin-Yi Lo ◽  
De-Cheng Chao ◽  
Chia-Cheng Li ◽  
Jau-Jin Liu ◽  
...  
Keyword(s):  
Gene Expression ◽  
Sulfonic Acid ◽  
Expression Profiles ◽  
Interleukin 1 ◽  
Gene Expression Profiles ◽  
Global Gene Expression ◽  
Trinitrobenzene Sulfonic Acid ◽  
Dependent Manner ◽  
Cytokine Genes ◽  
Microscopic Features

Inflammatory bowel disease is a chronic colonic inflammation that displays symptoms like diarrhea and weight loss. Acupuncture has been widely accepted by Western countries for the treatment of pain. Here, we analyzed efficacy and mechanism of electroacupuncture (EA) on trinitrobenzene sulfonic acid- (TNBS-) induced colitis in mice. Mice were intrarectally administered with 250 mg/kg TNBS and electroacupunctured at Quze (PC3) and Neiguan (PC6) acupoints, which have been applied for gastrointestinal disorders. Gene expression profiles in colons and spleens were analyzed by microarray for the elucidation of mechanism of EA. Our data showed that EA at PC3 and PC6 improved macroscopic and microscopic features of colitis and the improvement displayed a frequency-dependent manner. Administration of TNBS upregulated the expression of most cytokine genes in colons, while EA downregulated the expression of TNBS-induced cytokine genes. Pathway analysis showed that EA significantly affected inflammatory pathways in colons and immunity-associated pathway in spleens. Immunohistochemical staining further showed that EA decreased the expression of interleukin-1βand nuclear factor-κB. In conclusion, this is the first study reporting the global gene expression profiles of EA on TNBS-induced colitis. Our findings suggested that inflammatory and immunity pathways were involved in the anti-inflammatory mechanism of EA on colitis induced by TNBS.

Gene expression profiles of folate deficient colon cancer cells

2003 ◽  
Vol 124 (4) ◽  
pp. A239
Author(s):  
Petar Novakovic ◽  
Kyoung-Jin Sohn ◽  
Young-In J. Kim
Keyword(s):  
Gene Expression ◽  
Colon Cancer ◽  
Cancer Cells ◽  
Expression Profiles ◽  
Gene Expression Profiles ◽  
Colon Cancer Cells
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