Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Docosahexaenoic and Arachidonic Free Fatty Acids Exert Different Antitumor Activities on Colorectal Cancer Cells

ABSTRACT: Two PUFA, docosahexaenoic (DHA, 22: 6n3) and arachidonic acids (ARA, 20: 4n6), as well as their derivatives such as eicosanoids, regulate different activities, which include changes in receptor signaling, the composition of rafts, cell metabolism, and membrane structures. These also modify the function of transcription factors and their target genes, a key step essential for the function of FA-activated signaling. This work is focused to determine the antitumor actions of these compounds linked to the regulation of gene transcription on HT-29 colorectal cancer. For this, we performed antiproliferative antitumour assay, LDH breakage test, caspase-3 production, and proteome changes were assessed by SWATH-MS quantitative proteomics followed by pathway analysis in order to find out which molecular mechanisms were being affected. In all cases tested, DHA exercised antitumor actions to a higher extent than ARA, acting mainly by means of down-regulating most of the proteasome system particles, while ARA presented a heavy effect on all the six DNA replication helicase particles but did not affect proteasome. The results indicated that both DHA and ARA stopped colorectal cancer growth and proliferation, thus they represent the ideal candidates as chemopreventive agents.

INSTRUMENT(S): TripleTOF 5600

ORGANISM(S): Homo Sapiens (human)

TISSUE(S): Cell Culture, Colon Epithelial Cell

DISEASE(S): Colon Cancer

SUBMITTER: Ignacio Ortea

LAB HEAD: Ignacio Ortea

PROVIDER: PXD008653 | Pride | 2022-01-28

REPOSITORIES: Pride

ACCESS DATA

Json Xml

Dataset's files

Source:

			Action	DRS
	2017041-all5pools.group	Other
	2017041-all5pools_LIBRARY.txt	Txt
	20170825-01_CONTROLpool.wiff	Wiff
	20170825-01_CONTROLpool.wiff.scan	Wiff
	20170825-04_ARA-AGLpool.wiff	Wiff

Items per page:

1 - 5 of 44

Similar Datasets

SWATH quantitative proteomics and cellular assays show in vitro anticancer activity of ARA- and DHA-based monoacylglycerols in colorectal cancer cells

Project description:Colorectal cancer is one of the most common and widespread disease in the world and the third type of cancer causing a high mortality rate. There is increasing evidence that some polyunsaturated fatty acids (PUFAs) are involved in the reduction of cancer risk and progression. Recent studies showed that sn-2 monoacylglycerols (MAG) exercise specific inhibitory actions on cancer cells through different mechanisms. However, the anticancer effect of PUFA-based MAGs on colorectal cancer has yet to be assessed. In this work we investigated the actions of two PUFAs, docosahexaenoic (DHA, 22: 6n3) and arachidonic acids (ARA, 20:4n6), both as MAG, on colon cancer human (HT-29) cell line. We performed the MTT test, LDH, and caspase-3 assays, while global proteome changes were assessed by SWATH-MS quantitative proteomics followed by pathway analysis in order to find out which molecular mechanisms were being affected. It has been proven that ARA- and DHA-MAG exercises dose- and time-dependent antiproliferative actions. In all cases, DHA-MAG acts on cancer cells more efficiently than ARA-MAG. Results clearly demonstrate the ability of MAGs to induce cell death in colon cancer cells and suggest a direct relationship between their chemical structure and their potency. Therefore, sn-2 MAG are suitable candidate for the production of new functional ingredients.

2022-01-28 | PXD009979 | Pride

SWATH differential abundance proteomics and cellular assays show in vitro anticancer activity of arachidonic and docosahexaenoic acid monoacylglycerols in HT-29 colorectal cancer cell line

Project description:Colorectal cancer (CRC) is one of the most common and mortal types of cancer. There is increasing evidence that some polyunsaturated fatty acids (PUFA) exercise specific inhibitory actions on cancer cells through different mechanisms, as a previous study on the effect on CRC cells of two PUFA free fatty acids (FFA), docosahexaenoic acid (DHA, 22:6n3) and arachidonic acid (ARA, 20:4n6)-FFA, shown. Here we have used the same study design and technology to investigate the actions of DHA and ARA-monoacylglycerols (MAG), and we have compared the results with the previous study of the corresponding FFA. Cell assays revealed that ARA- and DHA-MAG exercised dose- and time-dependent antiproliferative actions, with DHA-MAG acting on cancer cells more efficiently than ARA-MAG. SWATH-MS massive quantitative proteomics, validated by parallel reaction monitoring and followed by pathway analysis, revealed that DHA-MAG had a massive effect in the proteasome complex, while ARA-MAG main effect was related to DNA replication. Prostaglandin synthesis also resulted inhibited by DHA-MAG. Results clearly demonstrated the ability of MAGs to induce cell death in colon cancer cells and suggested a direct relationship between chemical structure and effect.

2020-05-26 | PXD014874 | Pride

Proteomic approach for molecular classification of colorectal cancer

Project description:The main objective of this study was to identify potential protein expression signatures by the SWATH technique of proteomic analysis, to aid in the classification of molecular subtypes of colorectal cancer.

2019-10-04 | PXD007810 | Pride

SWATH proteomic profiling of prostate cancer cells identifies NUSAP1 as a biomarker of response to Galiellalactone

Project description:Galiellalactone (GL) is a fungal metabolite that presents antitumor and anti-inflammatory activities in vitro and in vivo. Previous studies have shown that GL targets NF-KB and STAT3 pathways and induces G2/M cell cycle arrest in androgen-insensitive prostate cancer cells. In this study, we show that GL-induced cell cycle arrest is independent of the NF-KB and STAT3 pathways in DU145 and PC-3 cells, and also that GL did not affect cell cycling in androgen-sensitive prostate cancer cell such as LNCaP and 22Rv1 cells. In addition, we showed confluence resistance to GL in DU145 cells. Using a SWATH proteomic approach we identified the down-regulation of Nucleolar and spindle associated protein 1 (NUSAP1) under DU145 confluence and in LNCaP cells. Also, the inhibition of NUSAP1 by siRNAs induced resistance to GL in DU145 cells, suggesting that NUSAP1 may be a target for GL and could be useful as biomarker for responsiveness of the antitumor activity of GL.

2019-01-14 | PXD010993 | Pride

tRNA Biogenesis and Specific Aminoacyl-tRNA Synthetases Regulate Senescence Stability Under the Control of mTOR

Project description:Oncogenes or chemotherapy treatments trigger the induction of suppressive pathways such as apoptosis or senescence. Senescence was initially defined as a definitive arrest of cell proliferation but recent results have shown that this mechanism is also associated with cancer progression and chemotherapy resistance. Senescence is therefore much more heterogeneous than initially thought. How this response varies is not really understood, it has been proposed that its outcome relies on the secretome of senescent cells and on the maintenance of their epigenetic marks. Using experimental models of senescence escape, we now described that the stability of this suppression relies on specific tRNAs and aminoacyl-tRNA synthetases. Following chemotherapy treatment, the DNA binding of the type III RNA polymerase was reduced to prevent tRNA transcription and induce a complete cell cycle arrest. By contrast, during senescence escape, specific tRNAs such as tRNA-Leu-CAA and tRNA-Tyr-GTA were upregulated. Reducing tRNA transcription appears necessary to control the strength of senescence since RNA pol III inhibition through BRF1 depletion maintained senescence and blocked cell persistence. mTOR inhibition also prevented CIS escape in association with a reduction of tRNA-Leu-CAA and tRNA-Tyr-GTA expression. Further confirming the role of the tRNA-Leu-CAA and tRNA-Tyr-GTA, their corresponding tRNA ligases, YARS and LARS, were necessary for senescence escape. This effect was specific since the CARS ligase had no effect on persistence. YARS and LARS inactivation reduced cell emergence and proteomic analysis indicated that this effect was associated with the down-regulation of E2F1 target genes. Overall, these findings highlight a new regulation of tRNA biology during senescence and suggest that specific tRNAs and ligases contribute to the strength and heterogeneity of this suppression. !

2021-12-09 | PXD029535 | Pride

SWATH-MS proteomic analysis of primary human keratinocytes exposed to Cannabidiol

Project description:Primary human keratinocytes cultures were incubated with either DMSO or cannabidiol (10 uM) for 24 hours (N=4) to evaluate the effect of this compound over skin cells.

2019-10-16 | PXD013956 | Pride

HCN regulates cellular processes through posttranslational modification of proteins by S-cyanylation

Project description:Hydrogen cyanide (HCN) is coproduced with ethylene in plant cells and primarily enzymatically detoxified by the mitochondrial ß-cyanoalanine synthase (CAS-C1). Permanent or transient depletion of CAS-C1 activity in Arabidopsis results in physiological alterations in the plant that suggest that the function of HCN is a gasotransmitter molecule. Label-free quantitative proteomic analysis of enriched mitochondrial samples isolated from the wild type and cas-c1 mutant revealed significant changes in protein content, identifying 451 proteins that are absent or less abundant in cas-c1 and 353 proteins that are only present or more abundant in the mutant background. Gene ontology classification of these proteins highlights proteomic changes that explains the root hairless phenotype and the altered immune response observed in the cas-c1 mutant. The mechanism of action of cyanide as a signaling molecule has been addressed using two proteomic approaches focused on identifying the S-cyanylation of cysteine as a posttranslational modification of proteins. Both the 2-imino-thiazolidine chemical method and the direct untargeted analysis of proteins using LC-MS/MS identified a set of 163 proteins susceptible to S-cyanylation that included sedoheptulose 1, 7-bisphosphatase (SBPase), the peptidyl-prolyl cis-trans isomerase (CYP20-3) and enolase 2 (ENO2). In vitro analysis of these proteins identified that this modification in the SBPase Cys74, CYP20-3 Cys259 and ENO2 Cys346 residues affected the enzymatic activity of the enzymes. GO classification and protein-protein interaction cluster analysis revealed the function of S-cyanylation in the regulation of primary metabolic pathways, such as glycolysis, and the Calvin and S-adenosylmethionine cycles.

2019-01-09 | PXD009929 | Pride

Effect of cadmium in the microalga Chlorella sorokiniana: A proteomic study

Project description:Effect of cadmium in the microalga Chlorella sorokiniana

2020-10-05 | PXD015932 | Pride

Collagen induced arthritis plasma proteomic analysis

Project description:The aim of the project is to analyze the plasma proteomic profile of an animal model of arthritis (Collagen Induced Arthritis; CIA) in response to different treatments. For this, plasma samples from mice under five different treatments were analyzed (N=6 per group): Vehicle, CIA, CIA + Δ9-THCA-A (20 mg / kg), CIA + Δ9-THCA-A (20 mg / kg) + T0070907 (5 mg / kg) and CIA + Δ9-THCA-A (20 mg / kg) + SR141716A (5 mg / kg).

2020-09-18 | PXD015274 | Pride

Breaking the mucin barrier: a new affinity chromatography-mass spectrometry approach to unveil potential cell markers and pathways altered in Pseudomyxoma peritonei

Project description:Pseudomyxoma peritonei (PMP) is a rare, malignant tumour with unknown underlying molecular mechanisms characterised by a progressive accumulation of mucin and secreting tumour cells within the abdomen and pelvis. Cytoreductive surgery (CRS) combined with hyperthermic intraperitoneal chemotherapy (HIPEC) is the only therapeutic option currently available for its treatment and recurrence with a fatal outcome is common despite its use. The lack of information available about the molecular mechanisms underlying this condition is mainly due to the physicochemical characteristics of mucin, whose main purpose is to protect epithelial cells, which makes it inaccessible to a proteomic analysis. In this paper we describe the first protocol available to break this barrier and offer a chance to isolate proteins from soft and hard mucinous tumour tissues. This approach is based on the depletion of glycoproteins, immunoglobins, and albumins by affinity liquid chromatography, which makes the mucin available for label free quantification by mass spectrometry. As in the case of non mucinous tissues, our protocol yields a mix of total proteins and has allowed us to establish the first protein profile in mucinous tumours. In addition, our protein-protein interaction networks and pathway enrichment analyses revealed MUC13 and TFF1 as potential therapeutic targets in this disease.

2024-06-22 | PXD037364 | Pride

OmicsDI is part of the ELIXIR infrastructure

OmicsDI is an Elixir interoperability service. Learn more ›

Tweets

OmicsDI Databases

PRIDE
PeptideAtlas
MassIVE
JPOST Repository
Physiome Model Repository

EGA
EVA
ENA
LINCS
PAXDB
Cell Collective

MetaboLights
Metabolomics Workbench
MetabolomeExpress
GNPS
BioModels
FAIRDOMHub

ArrayExpress
dbGaP
ExpressionAtlas
GEO
NODE

Information

Databases
Help
API
Contact us
Code on GitHub
Terms of use
Submit Data