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Hormonal sensitivity of human breast tumors in vitro: pentose-shunt activity.

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Recent studies indicated that response to endocrine therapy might be predicted in human breast carcinomas using the sensitivity of the pentose-shunt pathway to hormones in organ culture. Thirty breast tumors were examined using this histochemical method, and three independent assessments were made.

P-cadherin induces anoikis-resistance of matrix-detached breast cancer cells by promoting pentose phosphate pathway and decreasing oxidative stress

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Successful metastatic spreading relies on cancer cells with stem-like properties, glycolytic metabolism and increased antioxidant protection, allowing them to escape anoikis and to survive in circulation. The expression of P-cadherin, a poor prognostic factor in breast cancer, is associated with

Expression of Pentose Phosphate Pathway-Related Proteins in Breast Cancer.

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UNASSIGNED The purpose of this study was to assess the expression of pentose phosphate pathway- (PPP-) related proteins and their significance in clinicopathologic factors of breast cancer. UNASSIGNED Immunohistochemical staining for PPP-related proteins (glucose-6-phosphate dehydrogenase [G6PDH],

Differential Site-Based Expression of Pentose Phosphate Pathway-Related Proteins among Breast Cancer Metastases.

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Purpose. We aimed to investigate the expression of pentose phosphate pathway- (PPP-) related proteins in metastatic breast cancer and its relationship with clinicopathologic factors. Methods. Tissue samples from 126 metastatic breast cancers were included in a tissue microarray. Expression of

Rac1 activates non-oxidative pentose phosphate pathway to induce chemoresistance of breast cancer.

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Resistance development to one chemotherapeutic reagent leads frequently to acquired tolerance to other compounds, limiting the therapeutic options for cancer treatment. Herein, we find that overexpression of Rac1 is associated with multi-drug resistance to the neoadjuvant chemotherapy (NAC).

Transketolase protein TKTL1 overexpression: A potential biomarker and therapeutic target in breast cancer.

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Malignant tumors degrade glucose to lactate even in the presence of oxygen via the pentose phosphate pathway (ppp). The non-oxidative part of the ppp is controlled by thiamine-dependant transketolase enzyme reactions. Overexpression of the transketolase-like-1-gene (TKTL1) in urothelial and

S-adenosylhomocysteine (AdoHcy)-dependent methyltransferase inhibitor DZNep overcomes breast cancer tamoxifen resistance via induction of NSD2 degradation and suppression of NSD2-driven redox homeostasis.

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Endocrine therapies (e.g. tamoxifen and aromatase inhibitors) targeting estrogen action are effective in decreasing mortality of breast cancer. However, their efficacy is limited by intrinsic and acquired resistance. Our previous study demonstrated that overexpression of a histone methyltransferase

Quantitative proteome and lysine succinylome analyses provide insights into metabolic regulation in breast cancer.

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BACKGROUND Breast cancer, the most common invasive cancer and cause of cancer-related death in women worldwide, is a multifactorial, complex disease, and many molecular players and mechanisms underlying the complexity of its clinical behavior remain unknown. METHODS To explore the molecular features

Biochemical modulation of tumor cell energy: regression of advanced spontaneous murine breast tumors with a 5-fluorouracil-containing drug combination.

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This report describes a highly active chemotherapeutic drug combination, consisting of N-(phosphonacetyl)-L-aspartate plus 6-methylmercaptopurine riboside plus 6-aminonicotinamide plus 5-fluorouracil, in CD8F1 mice bearing spontaneous, autochthonous, breast tumors or first-passage advanced

A bioactive probe for glutathione-dependent antioxidant capacity in breast cancer patients: implications in measuring biological effects of arsenic compounds.

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BACKGROUND Glutathione, a major cellular non-protein thiol (NPSH), serves a central role in repairing damage induced by cancer drugs, pollutants and radiation and in the detoxification of several cancer chemotherapeutic drugs and toxins. Current methods measure glutathione levels only, which require

Phototherapy alters the oncogenic metabolic activity of the breast cancer cells.

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Metabolic reprogramming in cancer cells is a strategy to attain a high proliferation rate, invasion, and metastasis. In this study, the effects of phototherapy at different wavelengths were investigated on the metabolic activity of the breast cancer

Palbociclib and Fulvestrant Act in Synergy to Modulate Central Carbon Metabolism in Breast Cancer Cells.

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The aims of this study were to determine whether combination chemotherapeutics exhibit a synergistic effect on breast cancer cell metabolism. Palbociclib, is a selective inhibitor of cyclin-dependent kinases 4 and 6, and when patients are treated in combination with fulvestrant, an estrogen receptor

Identification of targets of miRNA-221 and miRNA-222 in fulvestrant-resistant breast cancer.

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The present study aimed to identify the differentially expressed genes (DEGs) regulated by microRNA (miRNA)-221 and miRNA-222 that are associated with the resistance of breast cancer to fulvestrant. The GSE19777 transcription profile was downloaded from the Gene Expression Omnibus database, and

Fine-tuning the metabolic rewiring and adaptation of translational machinery during an epithelial-mesenchymal transition in breast cancer cells

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Background: During breast cancer progression, the epithelial to mesenchymal transition has been associated with metastasis and endocrine therapy resistance; however, the underlying mechanisms remain elusive. To gain insight into this

5'-AMP-activated protein kinase (AMPK) supports the growth of aggressive experimental human breast cancer tumors.

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Rapid tumor growth can establish metabolically stressed microenvironments that activate 5'-AMP-activated protein kinase (AMPK), a ubiquitous regulator of ATP homeostasis. Previously, we investigated the importance of AMPK for the growth of experimental tumors prepared from HRAS-transformed mouse

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