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Neddylation Signaling Inactivation by Tetracaine Hydrochloride Suppresses Cell Proliferation and Vemurafenib-resistance of Melanoma

ABSTRACT: Neddylation Signaling Inactivation by Tetracaine Hydrochloride Suppresses Cell Proliferation and Vemurafenib-resistance of Melanoma

PROVIDER: PRJNA1142019 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR30041749_1.fastq.gz	Fastqsanger.gz
	SRR30041749_2.fastq.gz	Fastqsanger.gz
	SRR30041750_1.fastq.gz	Fastqsanger.gz
	SRR30041750_2.fastq.gz	Fastqsanger.gz
	SRR30041751_1.fastq.gz	Fastqsanger.gz

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Neddylation Signaling Inactivation by Tetracaine Hydrochloride Suppresses Cell Proliferation and Vemurafenib-resistance of Melanoma

Project description:This study aimed to investigate the transcriptomic changes in A375 cells upon treatment with 400μM tetracaine hydrochloride (TTC) for 24 hours. RNA-seq data were generated from TTC-treated and untreated control A375 cells to identify differentially expressed genes and pathways involved in the cellular response to TTC exposure. The findings may provide insights into the molecular mechanisms underlying the effects of TTC on A375 cells.

2024-09-25 | GSE273497 | GEO

Neddylation signaling inactivation by tetracaine hydrochloride suppresses cell proliferation and alleviates vemurafenib-resistance of melanoma.

Project description:Tetracaine, a local anesthetic, exhibits potent cytotoxic effects on multiple cancer; however, the precise underlying mechanisms of its anti-cancer activity remain uncertain. The anti-cancer activity of tetracaine was found to be the most effective among commonly used local anesthetics in this study. After tetracaine treatment, the differentially expressed genes in melanoma cells were identified by the RNAseq technique and enriched in the lysosome signaling pathway, cullin family protein binding, and proteasome signaling pathway through Kyoto Encyclopedia of Genes and Genomes. Additionally, the ubiquitin-like neddylation signaling pathway, which is hyperactivated in melanoma, could be abrogated due to decreased NAE2 expression after tetracaine treatment. The neddylation of the pro-oncogenic Survivin, which enhances its stability, was significantly reduced following treatment with tetracaine. The activation of neddylation signaling by NEDD8 overexpression could reduce the antitumor efficacy of tetracaine in vivo and in vitro. Furthermore, vemurafenib-resistant melanoma cells showed higher level of neddylation, and potential substrate proteins undergoing neddylation modification were identified through immunoprecipitation and mass spectrometry. The tetracaine treatment could reduce drug resistance via neddylation signaling pathway inactivation in melanoma cells. These findings demonstrate that tetracaine effectively inhibits cell proliferation and alleviates vemurafenib resistance in melanoma by suppressing the neddylation signaling pathway, providing a promising avenue for controlling cancer progression.

| S-EPMC11413085 | biostudies-literature

Expression data from BRAFV600E A375 melanoma cells treated with vehicle or vemurafenib

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Vemurafenib, Cetuximab, and Irinotecan Hydrochloride in Treating Patients With Solid Tumors That Are Metastatic or That Cannot Be Removed by Surgery

Project description:This phase I trial studies the side effects and best dose of vemurafenib when given together with cetuximab and irinotecan hydrochloride in treating patients with solid tumors that have spread to other parts of the body or cannot be removed by surgery. Vemurafenib and irinotecan hydrochloride may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth. Immunotherapy with monoclonal antibodies, such as cetuximab, may help the body’s immune system attack the cancer, and may interfere with the ability of tumor cells to grow and spread. Giving vemurafenib with cetuximab and irinotecan hydrochloride may be a better treatment for solid tumors.

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Expression data from BRAFV600E A375 melanoma cells treated with vehicle or vemurafenib

Project description:Vemurafenib is a BRAF inhibitor with specificity for the most common BRAF mutant encountered in melanomas (BRAFV600E). Vemurafenib suppresses the proliferation of BRAF mutant human melanoma cells by suppressing downstream activation of the MEK/ERK mitogen activated protein kinases. We used microarrays to examine the transcriptional response of a vemurafenib-sensitive BRAFV600E human melanoma cell line (A375) to vemurafenib in order to further delineate the mechanisms by which BRAFV600E drives cell proliferation and energy metabolism in human melanoma. BRAFV600E A375 human melanoma cells were treated with vehicle (0.1% DMSO) or 10 uM vemurafenib for 24 h after which total RNA was extracted. Cells were prepared and RNA was extracted in 3 separate batches (three different cell stocks on three separate days) providing three independent replicates (n=3). Paired replicates (prepared from the same stock of cells on the same day) are denoted by A, B and C.

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Project description:Systemic lupus erythematosus (SLE) is an autoimmune disorder with systemic inflammation, autoantibody accumulation and organ damage. The abnormalities of double-negative (DN) T cells are considered as an important commander of SLE. Neddylation, an important type of protein post-translational modification (PTM), has been well-proved to regulate T cell-mediated immune response. However, the function of neddylation in SLE remains largely unexplored. Here, we reported that neddylation inactivation with MLN4924 or genetic abrogation of Ube2m in T cells prevented SLE development for decreased DN T cell accumulation. Further investigations revealed that inactivation of neddylation blocked Bim ubiquitination degradation and maintained Bim level in DN T cells, contributing to the apoptosis of the accumulated DN T cells for Fas mutation. Then double knockout (KO) lupus-prone mice (Ube2m-/-Bim-/-lpr) were generated and results showed that loss of Bim interrupted the improvement of DN T cell apoptosis and the consequential relieved lupus symptoms for Ube2m KO. Our findings identified that neddylation inactivation promoted Bim-mediated apoptosis of DN T cells and prevented lupus progress. Clinically, we also found the percentages of DN T cells were improved accompanied with reduced apoptosis of DN T cells in SLE patients. Moreover, the neddylation of Cullin1 was higher while Bim level was decreased in SLE patients compared with healthy control. Meantime, the inhibition of neddylation induced Bim-dependent apoptosis of DN T cells isolated from SLE patients. Together, these findings provide the first evidence of the neddylation role in lupus development, suggesting a novel therapeutic strategy for lupus.

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Project description:This randomized phase II trial studies how well irinotecan hydrochloride and cetuximab with or without vemurafenib works in treating patients with colorectal cancer that has spread to nearby tissue or lymph nodes, that has spread to other places in the body, or cannot be removed by surgery. Irinotecan hydrochloride and vemurafenib may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth. Monoclonal antibodies, such as cetuximab, may block the ability of tumor cells to grow and spread. It is not yet known whether irinotecan hydrochloride and cetuximab are more effective with or without vemurafenib in treating colorectal cancer.

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