Starving advanced prostate cancer cells by pharmacological gluose deprivation with a resveratrol trimer trans-Gnetin H [TGH]
Ontology highlight
ABSTRACT:
ORGANISM(S): Homo sapiens
PROVIDER: GSE240103 | GEO | 2023/10/01
REPOSITORIES: GEO
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Project description:Prostate cancer is a unique disease from a metabolic perspective. Early stage localized prostate cancer does not typically display increased aerobic glycolysis (the Warburg effect), as seen in other malignancies. However, increasing evidence suggests that advanced prostate cancer exhibits the Warburg effect and displays high glucose uptake. We describe here that trans-gnetin H (TGH), a naturally-occurring resveratrol trimer extracted from Paeonia suffruticosa, displays significant anti-cancer effects in advanced prostate cancer cells xenografted PC-3 cells in vivo.TGH perturbs energy metabolism by blocking the availability of glucose and inducing profound metabolic and transcriptomic changes in prostate cancer cells as demonstrated by RNA-seq. C-MYC, a known driver oncogene in prostate cancer, is downregulated in TGH-treated cells. Our studies demonstrate the feasibility of targeting aerobic glucose metabolism in advanced prostate cancer and identify TGH as a potential therapeutic candidate.
2023-10-01 | GSE240101 | GEO
Project description:Tumor chemoresistance is often associated to high aerobic glycolysis rates and reduced oxidative phosphorylation by cancer cells, a phenomenon called the “Warburg effect”. Thus, a treatment reversing the Warburg effect could decrease tumor cell survival both in the presence or absence of chemotherapy. Short-term starvation (STS) could accomplish this task since it is accompanied by a glucose and amino acid decrease and fatty acid increase, which require respiration for energy production. We tested the cytotoxicity of STS+Oxaliplatin on colon cancer cells by Trypan Blue, Carboxyfluorescein Succinimidyl ester and Annexin V staining. Reactive oxygen species production was measured by 2',7'-dichlorodihydrofluorescein diacetate staining. In vitro glucose consumption was evaluated by 18F-Fluoro-deoxyglucose uptake. Gene expression was tested by microarray analysis. Protein expression and activity were studied by western blot, proteomic analyses and spectrophotometric assays. CT26 bearing mice consumed only water for 48 hours (STS) before oxaliplatin treatment. Dynamic micro-Positron Emission Tomography and tumor growth measurements were performed. STS+Oxaliplatin cause a potent suppression of colon carcinoma growth and glucose consumption in in vitro and in vivo models. In CT26 cells, STS down-regulates aerobic glycolysis, and glutaminolysis, while increasing oxidative phosphorylation. STS-dependent increase in O2 consumption is associated with reduced ATP synthesis and increased oxidation. In combination with chemotherapy, these effects of STS cause additive toxicity to cancer cells. Our findings indicate that during and following STS the decreased glucose levels promote an anti-Warburg effect characterized by increased oxygen consumption but failure to generate ATP, resulting in oxidative damage and apoptosis. The experiment comprised for conditions: Control, Starvation, Oxaliplatin, and Starvation plus Oxaliplatin
2015-08-11 | E-GEOD-60653 | biostudies-arrayexpress
Project description:The androgen receptor (AR) is the major therapeutic target in prostate cancer, although the important targets of the AR have remained obscure. Here we report a detailed genomic profile of AR signalling and find that the AR directly regulates glycolysis, anabolic metabolism and cell cycle regulators in prostate cancer. This coordinated transcriptional program promotes cancer cell proliferation and enhances the macromolecular synthesis needed to produce daughter cells. Clinical gene expression profiles and mechanistic studies highlight the importance of CAMKK2, an AR target which regulates both cell proliferation and metabolism. Thus our genomics study identifies a direct link between AR signalling and aerobic glycolysis (the Warburg effect), providing a new perspective on the oncogenic function of the AR in prostate cancer. 8 Samples: Chromatin IP using AR and PolII in stimulated and unstimulated LNCaP and VCaP cells.
2011-03-23 | E-GEOD-28126 | biostudies-arrayexpress
Project description:Tumor chemoresistance is often associated to high aerobic glycolysis rates and reduced oxidative phosphorylation by cancer cells, a phenomenon called the “Warburg effect”. Thus, a treatment reversing the Warburg effect could decrease tumor cell survival both in the presence or absence of chemotherapy. Short-term starvation (STS) could accomplish this task since it is accompanied by a glucose and amino acid decrease and fatty acid increase, which require respiration for energy production. We tested the cytotoxicity of STS+Oxaliplatin on colon cancer cells by Trypan Blue, Carboxyfluorescein Succinimidyl ester and Annexin V staining. Reactive oxygen species production was measured by 2',7'-dichlorodihydrofluorescein diacetate staining. In vitro glucose consumption was evaluated by 18F-Fluoro-deoxyglucose uptake. Gene expression was tested by microarray analysis. Protein expression and activity were studied by western blot, proteomic analyses and spectrophotometric assays. CT26 bearing mice consumed only water for 48 hours (STS) before oxaliplatin treatment. Dynamic micro-Positron Emission Tomography and tumor growth measurements were performed. STS+Oxaliplatin cause a potent suppression of colon carcinoma growth and glucose consumption in in vitro and in vivo models. In CT26 cells, STS down-regulates aerobic glycolysis, and glutaminolysis, while increasing oxidative phosphorylation. STS-dependent increase in O2 consumption is associated with reduced ATP synthesis and increased oxidation. In combination with chemotherapy, these effects of STS cause additive toxicity to cancer cells. Our findings indicate that during and following STS the decreased glucose levels promote an anti-Warburg effect characterized by increased oxygen consumption but failure to generate ATP, resulting in oxidative damage and apoptosis.
2015-08-11 | GSE60653 | GEO
Project description:The androgen receptor (AR) is the major therapeutic target in prostate cancer, although the important targets of the AR have remained obscure. Here we report a detailed genomic profile of AR signalling and find that the AR directly regulates glycolysis, anabolic metabolism and cell cycle regulators in prostate cancer. This coordinated transcriptional program promotes cancer cell proliferation and enhances the macromolecular synthesis needed to produce daughter cells. Clinical gene expression profiles and mechanistic studies highlight the importance of CAMKK2, an AR target which regulates both cell proliferation and metabolism. Thus our genomics study identifies a direct link between AR signalling and aerobic glycolysis (the Warburg effect), providing a new perspective on the oncogenic function of the AR in prostate cancer.
2011-03-24 | GSE28126 | GEO
Project description:Aerobic glycolysis (the Warburg effect) has been demonstrated to facilitate tumor progression by producing lactate, which has important roles as a proinflammatory and immunosuppressive mediator. However, how aerobic glycolysis is directly regulated is largely unknown. Here, we show that ectopic Zeb1 directly increases the transcriptional expression of HK2, PFKP and PKM2, which are glycolytic rate-determining enzymes, thus promoting the Warburg effect and breast cancer proliferation, migration, and chemoresistance in vitro and in vivo. In addition, Zeb1 exerts its biological effects to induce glycolytic activity in response to hypoxia via the PI3K/Akt/HIF-1α signaling axis, which contributes to fostering an immunosuppressive tumor microenvironment (TME). Mechanistically, breast cancer cells with ectopic Zeb1 expression produce lactate in the acidic tumor milieu to induce the alternatively activated macrophage M2-like phenotype through stimulation of the PKA/CREB signaling pathway. Clinically, the expression of Zeb1 is positively correlated with dysregulation of aerobic glycolysis, accumulation of M2-like tumor-associated macrophages (TAMs) and a poor prognosis in patients with breast cancer. In conclusion, these findings identify a Zeb1-dependent mechanism as a driver of breast cancer progression that acts by stimulating tumor-macrophage interplay, which could be a viable therapeutic target for the treatment of advanced human cancers.
2022-03-09 | GSE189779 | GEO
Project description:Castration-resistant prostate cancer (CRPC) is a terminal disease and the molecular underpinnings of CRPC development need to be better understood in order to improve its treatments. Here, we report that a transcription factor Yin Yang 1 (YY1) is significantly overexpressed during prostate cancer progression. Functional and cistrome studies of YY1 uncover its roles in promoting prostate oncogenesis in vitro and in vivo, as well as sustaining tumor metabolism including the Warburg effect and mitochondria respiration. Additionally, our integrated genomics and interactome profiling in prostate tumor show that YY1 and bromodomain-containing proteins (BRD2/4) co-occupy a majority of gene-regulatory elements, coactivating downstream targets. Via gene loss-of-function and rescue studies, as well as mutagenesis of YY1-bound cis-elements, we unveil an oncogenic pathway in which YY1 directly binds and activates PFKP, a gene encoding the rate-limiting enzyme for glycolysis, significantly contributing to YY1-enforced Warburg effect and malignant growth. Altogether, this study supports a master regulator role for YY1 in prostate tumor and reveals a YY1:BRD2/4-PFKP axis operating in advanced prostate cancer with implications for therapy.
2021-06-03 | GSE164719 | GEO
Project description:Reprogramming of cancer cell metabolism toward aerobic glycolysis, i.e. the Warburg effect, is a hallmark of cancer; according to current views, the rationale for selecting such energy-inefficient metabolism is the need to increase cellular biomass to sustain production of daughter cells and proliferation. In this view, metabolic reprogramming is considered as a simple phenotypic endpoint that occurs as a consequence of signal transduction mechanisms, including oncogene-driven nutrient uptake and metabolic rewiring. A newly emerging paradigm is instead that transcriptional networks and oncogenic signaling can also be regulated downstream of metabolic pathways, that assume causative roles in controlling cancer cell behavior, above and beyond their core biochemical function. To explore possible links between glucose metabolism and nuclear gene transcription we compared immortalized mammary epithelial cells (MCF10A) and metastatic breast cancer cells (MDA-MB-231) growing in high glucose or in the presence of a widely used inhibitor of glucose uptake / glucose metabolism, 2-deoxy-glucose (2DG).
2015-03-23 | GSE59228 | GEO
Project description:Understanding the mechanisms of the Warburg shift to aerobic glycolysis is central to defining the metabolic basis of cancer. Hereditary leiomyomatosis and renal cell carcinoma (HLRCC) is an aggressive cancer characterized by bi-allelic inactivation of the gene encoding the Krebs cycle enzyme fumarate hydratase, an early shift to aerobic glycolysis, and rapid metastasis. We observed of the mitochondrial in tumors from HLRCC patients. Biochemical and transcriptomics analyses revealed that respiratory chain dysfunction in the tumors was due to loss of expression of mitochondrial DNA (mtDNA)-encoded subunits of respiratory chain complexes, caused by a marked decrease in mtDNA content and increased mtDNA mutations. We demonstrated that accumulation of fumarate in HLRCC tumors inactivated the core factors responsible for replication and proofreading of mtDNA, leading to loss of expression of respiratory chain components, thereby promoting the shift to aerobic glycolysis and disease progression in this prototypic model of glucose-dependent human cancer.
2021-01-22 | GSE157256 | GEO
Project description:Cells undergoing malignant transformation often shift their cellular metabolism from primarily oxidative phosphorylation to aerobic glycolysis (the Warburg effect). Energy restriction-mimetic agents (ERMAs), such as 2-deoxyglucose and resveratrol, that target this shift in cellular metabolism have been effective in inhibiting cancer cell growth in vitro, and xenograft tumor growth in vivo. We recently developed a novel ERMA, OSU-CG5, that exhibits higher in vivo activity than previously described ERMAs. In this study, we investigated the effect of OSU-CG5 on global gene expression in the dorsal and lateral lobes of the prostate of transgenic adenocarcinoma of the mouse prostate (TRAMP) mice, and on its ability to suppress lesion progression in these mice.
2013-01-06 | GSE32422 | GEO