Abstract:
:Breast cancer is the most common malignancy in women, and metastasis is the leading cause of death in breast cancer patients. Previous studies have shown that epithelial‑mesenchymal transition (EMT) is involved in the metastasis of breast cancer, but the metabolic reprogramming and regulation mechanisms involved in the EMT process are still unclear. In the present study, we successfully constructed an EMT cell model induced by transforming growth factor β1 (TGF‑β1) treatment of MCF‑7 cells at different times. The results showed that cell adhesion decreased, cell invasion increased and ATP levels increased in EMT MCF‑7 cells treated with TGF‑β1. Furthermore, the expression of fatty acid synthase (FASN) was decreased, and the expression of key fatty acid β‑oxidation enzymes (CPT1 and CD36) was elevated in treated cells compared to control cells. These results showed that the fatty acid oxidation pathway was enhanced. In addition, the expression of NADH:ubiquinone oxidoreductase subunit B8 (NDUFB8), mitochondrial transcription factor A (TFAM) and cytochrome c oxidase subunit I (COXI) increased, and the mitochondrial DNA copy number and ROS levels were also significantly increased during TGF‑β1‑induced EMT. These results indicated that mitochondrial oxidative phosphorylation (OXPHOS) activity was enhanced during EMT. In addition, we observed that the expression of p‑AMPK was increased and ACC (Acetyl‑CoA Carboxylase) was decreased during TGF‑β1‑induced EMT in MCF‑7 cells. Immunohistochemical analysis of clinical samples revealed high expression of FASN in epithelial cells that had high expression of E‑cadherin, while high expression of CPT‑1 was observed in mesenchymal cells that had high expression of vimentin. Results of the current study showed a metabolic transition in TGF‑β1‑induced EMT in MCF‑7 cells. This transition may regulate fatty acid oxidation and OXPHOS activity in EMT MCF‑7 cells through the p‑AMPK pathway. These data suggest that a metabolic transition that suppresses lipogenesis and favors energy production is an essential component of TGF‑β1‑induced EMT and metastasis in breast cancer. This study thus provides a new strategy for identifying new therapeutic targets for breast cancer.
journal_name
Oncol Repjournal_title
Oncology reportsauthors
Liu QQ,Huo HY,Ao S,Liu T,Yang L,Fei ZY,Zhang ZQ,Ding L,Cui QH,Lin J,Yu M,Xiong Wdoi
10.3892/or.2020.7661subject
Has Abstractpub_date
2020-09-01 00:00:00pages
1206-1215issue
3eissn
1021-335Xissn
1791-2431journal_volume
44pub_type
杂志文章相关文献
ONCOLOGY REPORTS文献大全abstract::Histone deacetylases (HDACs) have been shown to play important roles in the regulation of chromatin remodeling by histone deacetylation, and their expression is induced in several types of cancer. In addition, they are known to be associated with resistance to anticancer drugs. However, the relevance of HDAC4 in chemo...
journal_title:Oncology reports
pub_type: 杂志文章
doi:10.3892/or.2013.2578
更新日期:2013-09-01 00:00:00
abstract::Survivin, a member of the inhibitor-of-apoptosis family is an essential protein for regular mitosis and is involved in an anti-apoptotic pathway. In some studies, an association between survivin expression and radiosensitivity has been described for tumor cells, but the relationship between p53 and survivin regarding ...
journal_title:Oncology reports
pub_type: 杂志文章
doi:
更新日期:2005-01-01 00:00:00
abstract::Cholangiocarcinoma (CCA) is a highly lethal malignant tumor arising from the biliary tract epithelium. Chronic inflammatory conditions, including primary sclerosing cholangitis, liver fluke infestation, and hepatolithiasis, are considered risk factors, but the cause is still unknown in most cases. Recent advances in m...
journal_title:Oncology reports
pub_type: 杂志文章,评审
doi:
更新日期:2009-08-01 00:00:00
abstract::To better understand the molecular mechanisms of carcinogenesis induced in uterine endometrium by therapeutic anti-estrogenic Tamoxifen (TAM) exposure, 27 uterine tumors (4 benign endometrial polyps and 23 carcinomas) associated with TAM exposure were analyzed for the presence and spectrum of p53 and K-ras mutations. ...
journal_title:Oncology reports
pub_type: 杂志文章
doi:
更新日期:2008-05-01 00:00:00
abstract::Prostate cancer is one of the most common age-related malignancies. The occurrence frequency of prostate cancer is very different according to prostate zones. The prostate stroma is an important element in growth and differentiation of the normal prostate and also has a close relationship to the occurrence of benign p...
journal_title:Oncology reports
pub_type: 杂志文章
doi:
更新日期:2003-01-01 00:00:00
abstract::Cisplatin (DDP), a cytotoxic antitumor drug, functions in a dose-dependent manner. However, the pursuit for high‑dose therapeutic effects leads to more serious side effects including kidney toxicity. Nephrotoxicity caused due to endothelial cell dysfunction and neutrophils infiltration in kidneys. Interleukin-8 (IL-8)...
journal_title:Oncology reports
pub_type: 杂志文章
doi:10.3892/or.2014.3659
更新日期:2015-02-01 00:00:00
abstract::The mechanisms of drug resistance in cancer are not fully elucidated. To study the drug resistance of gastric cancer, we analyzed gene expression and DNA methylation profiles of 5-fluorouracil (5-FU)- and cisplatin (CDDP)-resistant gastric cancer cells and biopsy specimens. Drug-resistant gastric cancer cells were est...
journal_title:Oncology reports
pub_type: 杂志文章
doi:10.3892/or.2014.3014
更新日期:2014-04-01 00:00:00
abstract::The present study aimed to identify novel histone modification markers in gastric cancer (GC) by chromatin immunoprecipitation microarray (ChIP-chip) analysis and to determine whether these markers were able to discriminate between normal and GC cells. We also tested for correlations with DNA methylation. We probed a ...
journal_title:Oncology reports
pub_type: 杂志文章
doi:10.3892/or.2015.3824
更新日期:2015-05-01 00:00:00
abstract::The expression of the DNA mismatch repair proteins hMSH2 and hMLH1 and p21(waf1) the cyclin G1 inhibitor, may determine response of adult cancers to anti-cancer drugs, that include alkylating agents and platinum-based drugs. The role of DNA mismatch repair proteins (hMSH2 and hMLH1) and p21(waf1) in pediatric tumor re...
journal_title:Oncology reports
pub_type: 杂志文章
doi:10.3892/or.8.5.965
更新日期:2001-09-01 00:00:00
abstract::MicroRNA-17-5p has been proven upregulated in many human malignancies and correlated with tumor progression. However, its expression and clinical significance in osteosarcoma is still unclear. Thus, the aim of the present study was to explore the effects of miR-17-5p in osteosarcoma tumorigenesis and development. The ...
journal_title:Oncology reports
pub_type: 杂志文章
doi:10.3892/or.2016.4542
更新日期:2016-03-01 00:00:00
abstract::Angiogenesis is a key factor in the growth and dissemination of malignant diseases, including breast cancer, with significant implications for its clinical management. It is known that microRNAs (miRNAs) play important roles in regulating tumor properties in cancers. However, whether miR-497 contributes to breast canc...
journal_title:Oncology reports
pub_type: 杂志文章
doi:10.3892/or.2015.4529
更新日期:2016-03-01 00:00:00
abstract::The aims of this study were to investigate the expression levels of beta-catenin, Pin1 and cyclin D1 in salivary adenoid cystic carcinomas (SACC ) and to evaluate its clinical importance, furthermore, to elucidate whether beta-catenin expression was aberrant in SACC and whether Pin1 was involved in aberrant beta-caten...
journal_title:Oncology reports
pub_type: 杂志文章
doi:
更新日期:2006-09-01 00:00:00
abstract::Recently, emerging evidence shows that a number of long non‑coding RNAs (lncRNAs) recruit polycomb group (PcG) proteins to specific chromatin loci to silence relevant gene expression. In the present study, we provided evidence that lncRNA candidates, selected by bioinformatic analysis and nervous system polycomb 1 (NS...
journal_title:Oncology reports
pub_type: 杂志文章
doi:10.3892/or.2019.7000
更新日期:2019-04-01 00:00:00
abstract::DLC-1 (deleted in liver cancer-1) is a potential tumor suppressor gene, which is inactive in liver carcinogenesis. To observe the effects of DLC-1 gene expression on cell proliferation and migration in the human colon cancer cell line, RNAi Lipo-recombinant of the DLC-1 gene (pGCsil-DLC-1) was constructed and transduc...
journal_title:Oncology reports
pub_type: 杂志文章
doi:
更新日期:2008-03-01 00:00:00
abstract::Lymph node metastases are responsible for shorter survival in oral squamous cell carcinoma (OSCC). The aim of the present study was to assess the node metastasis frequency and survival according to the node metastasis features in 121 neck dissections (NDs) performed for OSCC, identifying evidence-based correlations an...
journal_title:Oncology reports
pub_type: 杂志文章
doi:10.3892/or.2013.2779
更新日期:2013-12-01 00:00:00
abstract::Although improvements in the chemotherapy modalities for pancreatic cancer have been realized, pancreatic cancer remains one of the most lethal malignancies. New-generation cancer immunotherapy methods, such as blocking of the PD-1/PD-L1 pathway, are consistently being investigated to improve the survival of pancreati...
journal_title:Oncology reports
pub_type: 杂志文章
doi:10.3892/or.2017.5399
更新日期:2017-03-01 00:00:00
abstract::The present study evaluated activity and toxicity of modulated doses of gemcitabine associated to oxaliplatin in patients with secondary CIRS and with locally advanced pancreatic adenocarcinoma (LAPC) and metastatic pancreatic adenocarcinoma (MPC). Since January 2006, untreated LAPC and MPC patients have been assessed...
journal_title:Oncology reports
pub_type: 临床试验,杂志文章
doi:10.3892/or.2011.1517
更新日期:2012-02-01 00:00:00
abstract::Bufalin, a major digoxin-like immunoreactive component of the Chinese medicine Chansu, is prepared from toad venom. This compound has been shown to exert a potential for anticancer activity against various human cancer cell lines in vitro. However, the detailed molecular mechanisms ...
journal_title:Oncology reports
pub_type: 杂志文章
doi:10.3892/or.2011.1451
更新日期:2012-01-01 00:00:00
abstract::The drug sensitivity of tumor cells is one of key issues to explore individualized therapy for cancer patients. One of such methods is in vitro anticancer drug sensitivity test which is generally based on one drug concentration and contact time. In this study, 5-fluorouracil (5-FU) sensitivity of cancer cells from col...
journal_title:Oncology reports
pub_type: 杂志文章
doi:
更新日期:2005-07-01 00:00:00
abstract::Although surgery and high‑dose radiotherapy have been the standard treatments for glioblastoma multiforme (GBM), these therapies are palliative, due to the high risk of local relapse. Emerging evidence has demonstrated that DNA double‑strand break (DSB) repair serves a critical role in resistance to radiotherapy. Prev...
journal_title:Oncology reports
pub_type: 杂志文章
doi:10.3892/or.2018.6756
更新日期:2018-12-01 00:00:00
abstract::Zinc finger protein 703 (ZNF703), identified as an oncogene in luminal B breast cancer, is a member of the NET/NlZ family of zinc finger transcription factors. However, the role of ZNF703 in colorectal cancer (CRC) is unknown. We investigated the expression of ZNF703 in paired tumor and corresponding normal tissues us...
journal_title:Oncology reports
pub_type: 杂志文章
doi:10.3892/or.2014.3313
更新日期:2014-09-01 00:00:00
abstract::Somatic inactivation of the von Hippel-Lindau (VHL) gene is the most frequent genetic event observed in clear cell renal cell carcinoma (CC-RCC). However, the prognostic relevance of somatic VHL alteration and its target, hypoxia inducible factor (HIF)-1alpha has not been defined. We investigated the genetic changes i...
journal_title:Oncology reports
pub_type: 杂志文章
doi:
更新日期:2005-05-01 00:00:00
abstract::Despite significant homology between IRS-1 and IRS-2, recent studies have revealed distinct functions for these adaptor proteins in regulating breast cancer progression. Thus far, most of the studies on breast cancer have focused upon IRS-1, the biological pattern of IRS-2 is limited. We demonstrated that depletion of...
journal_title:Oncology reports
pub_type: 杂志文章
doi:10.3892/or_00001016
更新日期:2010-12-01 00:00:00
abstract::Retinoblastoma, a well-vascularized tumor that is dependent on a very robust angiogenic response, is the most common intraocular malignancy in children. Tissue factor (TF) is known to regulate tumor progression and in the present study we demonstrated that TF regulates tumor angioge...
journal_title:Oncology reports
pub_type: 杂志文章
doi:10.3892/or.2012.2048
更新日期:2012-12-01 00:00:00
abstract::Mesenchymal stem cells (MSCs) are known to migrate to tumor tissues and to play an important role in cancer progression. However, the effects of MSCs on tumor progression remain controversial. The purpose of the present study was to detect the effects of human umbilical cord-derived MSCs (hUC‑MSCs) on the human breast...
journal_title:Oncology reports
pub_type: 杂志文章
doi:10.3892/or.2015.4109
更新日期:2015-09-01 00:00:00
abstract::Prognostic factors and the role of post-operative radiotherapy (PORT) in patients with pN1 nodal stage following surgery for NSCLC were identified. The clinical course of 211 patients with pN1 nodal involvement following thoracic surgery were reviewed, 97 of them received PORT. Multi-variate survival analysis with res...
journal_title:Oncology reports
pub_type: 杂志文章
doi:
更新日期:2004-09-01 00:00:00
abstract::The altered expression of certain genes is frequently detected as a hallmark of malignant tumors. These differentially expressed genes have the potential to become molecular markers. We purified the fecal mRNA from patients with colorectal cancer to identify novel candidates by using oligo-nucleotide microarray hybrid...
journal_title:Oncology reports
pub_type: 杂志文章
doi:
更新日期:2006-04-01 00:00:00
abstract::Non-steroidal anti-inflammatory drugs (NSAIDs), which inhibit the enzyme cyclooxygenase (COX), are known to have a potent anti-tumorigenic activity in various cancers. However, the responsible molecular mechanisms of COX inhibition in breast cancer cells remain to be completely elucidated. We examined the effect of th...
journal_title:Oncology reports
pub_type: 杂志文章
doi:10.3892/or_00000866
更新日期:2010-08-01 00:00:00
abstract::The high affinity nerve growth factor (NGF) NGF receptor, p75NTR, is a member of the tumor necrosis factor (TNF) receptor superfamily that shares a conserved intracellular death domain capable of inducing apoptosis and suppressing growth in prostate epithelial cells. Expression of this receptor is lost as prostate can...
journal_title:Oncology reports
pub_type: 杂志文章
doi:10.3892/or.2016.4832
更新日期:2016-07-01 00:00:00
abstract::Research has confirmed that abnormally expressed miRNAs are involved in the occurrence and development of hepatocellular carcinoma (HCC). In the present study, we confirmed that miR‑577 expression both in HCC tissues and cell lines was markedly downregulated. Clinically, downregulated expression of miR‑577 is notably ...
journal_title:Oncology reports
pub_type: 杂志文章
doi:10.3892/or.2018.6388
更新日期:2018-06-01 00:00:00