Integrative genome-wide analysis in mouse mammary tumors in response to maternal long-term genistein (LT-GE) treatment
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA799331 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR17692384.fastq.gz | Fastqsanger.gz | |||
| SRR17692385.fastq.gz | Fastqsanger.gz | |||
| SRR17692386.fastq.gz | Fastqsanger.gz | |||
| SRR17692387.fastq.gz | Fastqsanger.gz | |||
| SRR17692388.fastq.gz | Fastqsanger.gz |
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Project description:We tested global gene transcriptome changes by RNA-sequencing analysis and genome-wide methylation profiles by reduced representation bisulfite sequencing (RRBS) analysis in the offspring mammary tumors of C3(1)-SV40 Tag (SV40) transgenic mice to further identify key epigenetic-controlled genes in regulation of maternal GE diet-mediated early breast cancer prevention.
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Project description:Establishment of a transcriptomic profile of human cells treated with kaemferol, daidzein, kaemferol/genistein, or daidzein/genistein with particular emphasis on signature of genes coding for enzymes involved in glycosaminoglycan synthesis stands for the present study. The hypothesis tested was that kaemferol, daidzein, kaemferol/genistein, and daidzein/genistein influence expression of some genes, among which are those coding for enzymes required for the synthesis of different GAGs being pathologically accumulated in mucopolysaccharidoses. Results provide important information concerning the extent of action of kaemferol, daidzein, kaemferol/genistein, and daidzein/genistein at the molecular level in terms of modulation of gene expression.
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Project description:Prior studies support the notion that the experimental chemopreventive agent, genistein, inhibits prostate cancer (PCa) cell movement in humans and that this in turn inhibits metastatic spread, thereby preventing PCa-specific death. As many effects have been ascribed to genistein, it has been considered a non-specific agent. However, its effects are concentration-dependent, and the vast majority of studies use concentrations greater than 3 logs above those associated with dietary consumption. Genistein is found in soy, and individuals consuming soy-based diets have blood concentrations of free genistein in the low nanomalar range. Using dosing guided by phase I pharmacokinetic studies in US men, prospective treatment of men on a phase II trial with genistein for one month prior to radical prostatectomy for localized PCa. Here we conducted an unbiased screening for effects of genistein in prostate as well as evaluate changes between normal and cancer cells.
2019-03-16 | GSE128339 | GEO
Project description:Colorectal neoplasms are the third most common malignancies in the United States. Patients with metastatic (stage IV) colorectal cancer have a median life expectancy of 2 years. The response rates to chemotherapy range from 35-40%.
Epidemiologic evidence suggests that soy compounds may reduce the incidence of colorectal cancers. Laboratory analyses demonstrate that genistein, a soy-derived compound, may inhibit Wnt signaling, a pathway activated in majority of colorectal cancers. Laboratory observations also demonstrate that genistein may augment growth inhibition when combined with chemotherapeutic agents of 5-Fluorouracil and platinum compounds.
Based on pre-clinical data the investigators hypothesize that combining genistein with the standard of care chemotherapeutic regimens will reduce chemotherapy resistance and improve response rates in patients. The aim of the study is to add genistein to the regimens of FOLFOX or FOLFOX-Avastin in patients with newly diagnosed stage IV colon or rectal neoplasms.
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Project description:Gene expression profiling to identify genes significantly modulated by low and high doses of genistein in LNCaP cells. Significant genes were identified using StepMiner analysis and significantly altered pathways with Ingenuity Pathways analysis. Genistein significantly altered expression of transcripts involved in cell growth, carcinogen defenses and steroid signaling pathways. The effects of genistein on these pathways were confirmed by directly assessing dose-related effects on LNCaP cell growth, NQO-1 enzymatic activity and PSA protein expression.
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Project description:Epidemiological data indicate that consumption of soy-based food significantly reduces the cancer risk in human through interaction with estrogen receptors and the ‘phytoestrogen’ genistein present in the soy is responsible for this chemopreventive activity. The epigenome regulatory effect of genistein also reported but the key mechanism behind this effect remain elusive. In this current project, we reported the epigenome modulation effect of genistein using MDA-MB231 cells. Cells were treated with low-dose genistein for >1 month and the stable epigenetic alterations were analyzed by partial MNase digestion and TMT-based quantitative proteomics based chromatome mapping approach. We identified a total of 3177 chromatin-bound proteins with high confidence, including 882 proteins that displayed altered binding topology after cell conditioning with genistein. Prolonged phytochemical exposure permanently modified the binding topology of the key epigenetic regulators and preserved their binding topology in untreated progeny. Genistein induced altered epigenome modulation negatively regulates the expression of cell proliferation genes and suppress cell growth. In contrast, previously exposed cells displayed reduced expression of DNA repair genes and enhanced genotoxic stress upon genistein withdrawal.
2018-07-05 | PXD006178 | Pride
Project description:Establishment of a transcriptomic profile of human cells treated with kaemferol, daidzein, kaemferol/genistein, or daidzein/genistein with particular emphasis on signature of genes coding for enzymes involved in glycosaminoglycan synthesis stands for the present study. The hypothesis tested was that kaemferol, daidzein, kaemferol/genistein, and daidzein/genistein influence expression of some genes, among which are those coding for enzymes required for the synthesis of different GAGs being pathologically accumulated in mucopolysaccharidoses. Results provide important information concerning the extent of action of kaemferol, daidzein, kaemferol/genistein, and daidzein/genistein at the molecular level in terms of modulation of gene expression. Total RNA was obtained from human dermal fibroblasts (HDFa) subjected to 24 or 48 hours in vitro exposure to 30, 60 or 100 M-BM-5M kaemferol; 60 or 100 M-BM-5M daidzein; 30 M-BM-5M + 30 M-BM-5M kaemferol/genistein; 30 M-BM-5M + 30 M-BM-5M daidzein/genistein; or 0.05%DMSO. Three replicates each.
2013-01-24 | E-GEOD-43692 | biostudies-arrayexpress
Project description:Around one sixth of breast cancer cases are classified as triple-negative breast cancer (TNBC), named after the absence of the expression of estrogen receptors (ER), progesterone receptors (PR), and human epidermal growth factor receptor 2 (HER2); however, patients with TNBC suffer from poor clinical outcome and shortage of targeted therapy. Genistein, an estrogenic soy isoflavone, shows anti-cancer effects in TNBC cells such as inducing G2/M cell cycle arrest and apoptosis. However, the underlying mechanism of its anti-cancer effects is poorly understood and its elucidation can help the development of novel therapeutic strategies for TNBC. In this study, by combining isobaric tag-based TMT labeling with titanium dioxide-based phosphopeptide enrichment, we quantitated 5,445 phosphorylation sites on 2,008 phosphoproteins in a TNBC cell line, MDA-MB-231, upon genistein treatment. Our analysis revealed 332 genistein-regulated phosphorylation sites on 226 proteins. Our data show that genistein can regulate several biological processes during the cell cycle, including DNA replication, cohesin complex cleavage, and kinetochore formation. In the meantime, genistein can also activate DNA damage response, including activation of ATR and BRCA1 complex. Overall, for the first time, our study present the evidence that genistein could inhibit TNBC cell growth by regulating the cell cycle and DNA damage response. Our findings help elucidate the mechanisms through which genistein exerts its anti-cancer effects in TNBC cells.
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Project description:We took advantage of a transgenic rat expressing the green fluorescent protein (GFP) specifically in germ cells allowing purification of perinatal GFP-positive germ cells. Timed-pregnant rats were exposed to ethinylestradiol (EE2, 2 µg/kg/d), genistein (GE, 10 mg/kg/d) or vehicle by gavage, from gestational days (GD) 13 to 19; testes were sampled at GD20 or post-natal (PND) 5 for sorting of GFP-positive cells. Gene expression was assessed in GFP-positive cells using Affymetrix Rat Gene 2.0 ST microarrays.
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Project description:Phenotypically, we observed that both genistein and Tanshinone I exert the inhibitory effects on the proliferation and metastasis of cervical cancer. The aim of this study was to comprehensively decipher the anti-metastasis effect and molecular mechanism of genistein and Tanshinone I on the cervical cancer. The results showed that genistein and Tanshinone I strongly change the RNA profiling of the cervical cancer cells in different manners: genistein mainly targets on regulation of RNA transcription, central carbon metabolism in cancer, microRNAs in cancer and focal adhesion etc; Tanshinone I mainly effects on central carbon metabolism in cancer, mitophagy process.
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