Change in gene expression of a canine melanoma cell line caused by exposure to nonsteroidal anti-inflammatory drugs (NSAIDs) .
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ABSTRACT: Nonsteroidal anti-inflammatory drugs (NSAIDs) has been suggested as adjunctive anti-tumor agents in human and veterinary medicine. However, its anti-tumor molecular machinery is still controversial. Therefore, we performed whole transcriptome analysis to discover gene expression influenced by NSAIDs treatment. A canine melanoma cell line (Mi/CMM1) was treated by three NSAIDs, piroxicam, carprofen, and robenacoxib, at their half maximal (50%) inhibitory concentrations (116 µM, 779 µM, and 156 µM) for 6 hours. Subsequently, total RNA were extracted and microarray analysis was performed to evaluate change in gene expression caused by NSAIDs treatment. Each condition had three biological replicates.
Project description:Nonsteroidal anti-inflammatory drugs (NSAIDs) has been suggested as adjunctive anti-tumor agents in human and veterinary medicine. However, its anti-tumor molecular machinery is still controversial. Therefore, we performed whole transcriptome analysis to discover gene expression influenced by NSAIDs treatment.
Project description:Nonsteroidal anti-inflammatory drugs (NSAIDs), the quintessential medicines to treat pain and inflammatory conditions, induce cell death in human cancer cells, as repurposed anticancer agents, and in normal gastric mucosa, as a major side effect. The subcellular target/s of NSAIDs that leads to the cell death remained elusive so far. Here, by venturing transcriptomics followed by functional validation, we, for the first time, identified mitochondrial deacetylase Sirtuin 3 (Sirt3) as a non-canonical target of NSAIDs whose depletion induced the hyperacetylation of mitochondrial proteome, OGG1 depletion, mtDNA damage, electron transport chain defect associated mitochondrial dysfunction and finally cell death. Silencing of Sirt3 in AGS cells (a human gastric adenocarcinoma cell line) significantly aggravated NSAID-induced cytopathology. Whereas, honokiol mediated induction of Sirt3 corrected the NSAID-induced transcriptome alteration and gastropathy in rodent model. Together, the results identify Sirt3 as a common target used by NSAIDs to induce gastric carcinoma cell death and gastric mucosal injury.
Project description:Nonsteroidal anti-inflammatory drugs (NSAIDs), the quintessential medicines to treat pain and inflammatory conditions, induce cell death in human cancer cells, as repurposed anticancer agents, and in normal gastric mucosa, as a major side effect. The subcellular target/s of NSAIDs that leads to the cell death remained elusive so far. Here, by venturing transcriptomics followed by functional validation, we, for the first time, identified mitochondrial deacetylase Sirtuin 3 (Sirt3) as a non-canonical target of NSAIDs whose depletion induced the hyperacetylation of mitochondrial proteome, OGG1 depletion, mtDNA damage, electron transport chain defect associated mitochondrial dysfunction and finally cell death. Silencing of Sirt3 in AGS cells (a human gastric adenocarcinoma cell line) significantly aggravated NSAID-induced cytopathology. Whereas, honokiol mediated induction of Sirt3 corrected the NSAID-induced transcriptome alteration and gastropathy in rodent model. Together, the results identify Sirt3 as a common target used by NSAIDs to induce gastric carcinoma cell death and gastric mucosal injury.
Project description:Nonsteroidal anti-inflammatory drugs (NSAIDs), including salicylic acid (SA), target mammalian cyclooxygenases. In plants, SA is a defense hormone that regulates NON-EXPRESSOR OF PATHOGENESIS RELATED GENES 1 (NPR1), the master transcriptional regulator of immunity-related genes. We identify that the oxicam-type NSAIDs tenoxicam (TNX), meloxicam, and piroxicam, but not other types of NSAIDs, exhibit an inhibitory effect on immunity to bacteria and SA-dependent plant immune response. TNX treatment decreases NPR1 levels, independently from the proposed SA receptors NPR3 and NPR4. Instead, TNX induces oxidation of cytosolic redox status, which is also affected by SA and regulates NPR1 homeostasis. A cysteine labeling assay reveals that cysteine residues in NPR1 can be oxidized in vitro, leading to disulfide-bridged oligomerization of NPR1, but not in vivo regardless of SA or TNX treatment. Therefore, this study indicates that oxicam inhibits NPR1-mediated SA signaling without affecting the redox status of NPR1.
Project description:Severe malaria encompasses a range of syndromes manifesting systemically or in diverse organs. These are believed to represent the end-stage processes of local parasite sequestration and inflammatory cascades. Classical anti-malarial drugs target parasites only. In treatment of severe disease, adjunctive therapies capable of controlling the inflammatory processes could be beneficial. Innate defense regulator (IDR) peptides display multiple immune modulatory activities. In this study, we assessed peptide IDR-1018, which shows promise as an anti-inflammatory drug, as a lead candidate for adjunctive host-directed therapy of established disease in the P. berghei ANKA model of experimental cerebral malaria (ECM). Intravenously administered IDR-1018 partially protected mice from ECM both prophylactically and in adjunctive treatment with classical anti-malarial drugs. We used transcriptional data from spleens and brains taken early in infection (day 3) of prophylactically treated mice to investigate the protective mechanisms. The microarrays compared spleens and brains from nine IDR-1018 i.v. treated, infected mice (IDR-1018-treated infected) with three saline i.v. treated infected mice (saline-treated infected) and three uninfected untreated control mice (controls). RNA samples were hybridized in randomized order to five Illumina WG-6 v2 BeadChips . No technical replicates were performed.
Project description:Nonsteroidal anti-inflammatory drugs (NSAIDs) are the primary treatment for osteoarthritis (OA), but prolonged use has adverse effects and varying efficacy. Among NSAIDs, imrecoxib, a selective cyclooxygenase-2 (COX-2) inhibitor, reduces side effects yet remains ineffective for half the patient population. This study aims to identify biomarkers for early imrecoxib efficacy evaluation in OA for personalized therapy optimization. From September 2021 to January 2022, imrecoxib was administered to patients with OA at Nanjing Drum Tower Hospital. Plasma samples from these patients underwent proteomic analysis through the four-dimensional data-independent acquisition (4D-DIA) method, followed by bioinformatics analysis. Potential differentially expressed proteins (DEPs) were validated using enzyme-linked immunosorbent assay (ELISA). Sixty-six patients with knee OA were included and divided into responders (n=35) and non-responders (n=31). Proteomic analysis was conducted on 15 patients from each group, and ELISA validation was performed for every patient. We found 140 DEPs between the two groups after administering imrecoxib treatment, characterized by 29 proteins showing up-regulation and 111 displaying down-regulation (p < 0.05, fold change > ±1.2). Galectin-1 (LGALS1), galectin-3 (LGALS3), and the cluster of differentiation 44 (CD44) could be utilized to evaluate the clinical response to imrecoxib in the treatment of OA after ELISA validation.This study successfully identified biomarkers for evaluating imrecoxib's clinical response in OA patients using 4D-DIA technology. These biomarkers may play a vital role in future personalized OA treatment strategies, pending further confirmation.
Project description:The alarming rise of antimicrobial resistance in Mycobacterium tuberculosis coupled with the shortage of new antibiotics has made tuberculosis (TB) control a global health priority. Non-steroidal anti-inflammatory drugs (NSAIDs) inhibit the growth of multi-drug resistant isolates of M. tuberculosis. Repurposing NSAIDs, with known clinical properties and safety records, offers a direct route to clinical trials. Therefore we investigated the novel mechanisms of anti-mycobacterial action of the NSAID, carprofen. Integrative molecular and microbiological approaches revealed that carprofen, a bactericidal drug, inhibited bacterial drug efflux mechanisms. In addition, carprofen restricted mycobacterial biofilm-like growth, highlighting the requirement of efflux-mediated communicative systems for the formation of biofilms. Transcriptome profiling revealed that carprofen likely acts by inhibiting respiration through the disruption of membrane potential, which may explain why spontaneous drug-resistant mutants could not be raised due to the pleiotropic nature of carprofen’s anti-tubercular action. This immunomodulatory drug has the potential to reverse TB antimicrobial resistance by inhibiting drug efflux pumps and biofilm formation, and paves a new chemotherapeutic path for tackling tuberculosis.
Project description:Nonsteroidal anti-inflammatory drugs have been shown to reduce the incidence of gastrointestinal cancers, but the propensity of these drugs to cause ulcers and bleeding limits their use. H2S has been shown to be a powerful cytoprotective and anti-inflammatory substance in the digestive system. This study explored the possibility that a H2S-releasing nonsteroidal anti-inflammatory drug (ATB-346) would be effective in a murine model of hereditary intestinal cancer (APCMin+ mouse) and investigated potential mechanisms of action via transcriptomics analysis. Daily treatment with ATB-346 was significantly more effective at preventing intestinal polyp formation than naproxen. Significant beneficial effects were seen with a treatment period of only 3-7 days, and reversal of existing polyps was observed in the colon. ATB-346, but not naproxen, significantly decreased expression of intestinal cancer-associated signaling molecules (cMyc, β-catenin). Transcriptomic analysis identified 20 genes that were up-regulated in APCMin+ mice, 18 of which were reduced to wild-type levels by one week of treatment with ATB-346. ATB-346 is a novel, gastrointestinal-sparing anti-inflammatory drug that potently and rapidly prevents and reverses the development of pre-cancerous lesions in a mouse model of hereditary intestinal tumorigenesis. These effects may be related to the combined effects of suppression of cyclooxygenase and release of H2S, and correction of most of the APCMin+-associated alterations in the transcriptome. ATB-346 may represent a promising agent for chemoprevention of tumorigenesis in the GI tract and elsewhere. Total RNA obtained from colon of APCMin/+ mice treated for 7 days with vehicle, ATB-346 or naproxen. Tissue collected 7 weeks after the final dose of drug
Project description:Epidemiological studies have shown that the regular use of non-steroidal anti-inflammatory (NSAIDs) drugs is associated with a reduced risk of various cancers. In addition, in vitro and experiments in mouse models have demonstrated that NSAIDs decrease tumor initiation and/or progression of several cancers. However, there are limited preclinical studies investigating the effects of NSAIDs in ovarian cancer. Here, we have studied the effects of two NSAIDs, diclofenac and indomethacin, in ovarian cancer cell lines and in a xenograft mouse model. Diclofenac and indomethacin treatment decreased cell growth by inducing cell cycle arrest and apoptosis. In addition, diclofenac and indomethacin reduced tumor volume in a xenograft model of ovarian cancer. To identify possible molecular pathways mediating the effects of NSAID treatment in ovarian cancer, we performed microarray analysis of ovarian cancer cells treated with indomethacin or diclofenac. Interestingly, several of the genes found downregulated following diclofenac or indomethacin treatment are transcriptional target genes of E2F1. E2F1 was downregulated at the mRNA and protein level upon treatment with diclofenac and indomethacin, and overexpression of E2F1 rescued cells from the growth inhibitory effects of diclofenac and indomethacin. In conclusion, NSAIDs diclofenac and indomethacin exert an anti-proliferative effect in ovarian cancer in vitro and in vivo and the effects of NSAIDs may be mediated, in part, by downregulation of E2F1. The serous ovarian adenocarcinoma cell lines HEY, OVCAR5 and UCI-101 were grown in culture then seeded in 60 mm dishes and treated for 24 hours with 300 mM diclofenac, indomethacin or no treatment (Control). RNA was isolated and one sample from each group was labeled and hybridized to Illumina Sentrix bead arrays.