3 beta galactosidase/karcinom prsu

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ČlánkyKlinické testyPatenty

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Purification and characterization of β-galactosidase from newly isolated Aspergillus terreus (KUBCF1306) and evaluating its efficacy on breast cancer cell line (MCF-7).

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Přihlášení Registrace

β-galactosidases (EC 3.2.1.23) are able to catalyze two different types of reactions, namely hydrolysis and transgalactosylation. It is a lysosomal exoglycosidase involved in the catabolism of glycoconjugates by sequential release of β-linked terminal galactosyl residues. It has profound

Beta-galactosidase and alpha-mannosidase inhibit formation of multicellular nodules in breast cancer cell cultures.

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In response to an estrogen, confluent monolayers of MCF-7 cell cultures develop multi-cellular nodules, termed foci. Post-confluent development of foci occurs with physiologic levels of 17beta-estradiol and are inhibited by various anti-estrogens acting through either the estrogen or aryl

Upregulation of EID3 sensitizes breast cancer cells to ionizing radiation-induced cellular senescence.

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Previous studies have shown that BMS-345541 (BMS, a specific IκB kinase β inhibitor) sensitized various tumor cells including MCF-7 breast cancer cells to ionizing radiation (IR). However, the mechanisms of BMS action are unknown. Since the expression of E1A-like inhibitor of differentiation 3

Immunotherapy of metastatic breast cancer patients with vitamin D-binding protein-derived macrophage activating factor (GcMAF).

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Serum vitamin D3-binding protein (Gc protein) is the precursor for the principal macrophage activating factor (MAF). The MAF precursor activity of serum Gc protein of breast cancer patients was lost or reduced because Gc protein was deglycosylated by serum alpha-N-acetylgalactosaminidase (Nagalase)

The stability of breast cancer progenitor cells during cryopreservation: Maintenance of proliferation, self-renewal, and senescence characteristics.

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Cancer stem cells are believed to be the driving force behind tumor progression and development. Despite extensive studies on the effects of cryopreservation on embryonic and hematopoietic stem cells there is only limited data that directly deals with in the cryopreservation of cancer stem cells. In

Correlation between extent of osteolytic damage and metastatic burden of human breast cancer metastasis in nude mice: real-time PCR quantitation.

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Orthotopic or intracardiac injection of human breast cancer cell lines into immunocompromised mice allows study of the molecular basis of breast cancer metastasis. We have established a quantitative real-time PCR approach to analyze metastatic spread of human breast cancer cells inoculated into nude

p53 trans-dominantly suppresses tumor formation of human breast cancer cells mediated by retroviral bulk infection without marker gene selection: an expeditious in vitro protocol with implications towards gene therapy.

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Studies on the molecular basis of human breast cancer have demonstrated that mutational inactivation of the p53 tumor suppressor gene may be an essential step in the development of this cancer. We and others have previously shown that transfer of the wild-type p53 gene into cultured breast cancer

Expression of hepaCAM is downregulated in cancers and induces senescence-like growth arrest via a p53/p21-dependent pathway in human breast cancer cells.

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Previously, we reported the identification of a novel immunoglobulin-like cell adhesion molecule hepaCAM that is frequently downregulated and inhibits cell growth in hepatocellular carcinoma. In this study, we show that the expression of hepaCAM is suppressed in diverse human cancers. Aiming to

Estrogen Signaling Induces Mitochondrial Dysfunction-Associated Autophagy and Senescence in Breast Cancer Cells.

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Previous work has shown that although estrogen (E2) disrupts cellular iron metabolism and induces oxidative stress in breast and ovarian cancer cells, it fails to induce apoptosis. However, E2 treatment was reported to enhance the apoptotic effects of doxorubicin in cancer cells. This suggests that

Suppression of RAD21 Induces Senescence of MDA-MB-231 Human Breast Cancer Cells Through RB1 Pathway Activation Via c-Myc Downregulation.

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Cellular senescence impedes cancer progression by limiting uncontrolled cell proliferation. To identify new genetic events controlling senescence, we performed a small interfering RNA screening human cancer cells and identified a number of targets potentially involved in senescence of MDA-MB-231

Monoclonal antibodies against native ant denatured forms of estrogen-induced breast cancer protein (BCEI/pS2) obtained by expression in Escherichia coli.

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Several vectors were used to express the complementary DNA for breast cancer estrogen-induced protein BCEI (also called pS2) in Escherichia coli. The best results were obtained by using the pUR 290 expression vector after deletion of the sequence encoding the signal peptide of the protein. In these

Insulin-like growth factor binding protein-related protein 1 inhibits proliferation of MCF-7 breast cancer cells via a senescence-like mechanism.

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Elevated insulin-like growth factor binding protein-related protein 1 (IGFBP-rP1) mRNA in senescent human mammary epithelial cells suggested that the IGFBP-3 gene product may inhibit cell proliferation. To test this hypothesis, we used a retroviral vector to express IGFBP-rP1 cDNA in the

Functional characterisation of p53 mutants identified in breast cancers with suboptimal responses to anthracyclines or mitomycin.

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BACKGROUND Approximately 4300 different TP53 mutations have been reported in human cancers. TP53 mutations, in particular those affecting the L2/L3 domains, are associated with resistance to anthracycline or mitomycin treatment in breast cancer patients. While many mutations have been characterised

The Functional Roles of the MDM2 Splice Variants P2-MDM2-10 and MDM2-∆5 in Breast Cancer Cells.

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BACKGROUND MDM2 is a negative regulator of p53 and is upregulated in numerous human cancers. While different MDM2 splice variants have been observed in both normal tissues and malignant cells, their functions are poorly understood. METHODS We evaluated the effect of MDM2 splice variants by

Adenovirus-directed expression of dominant negative estrogen receptor induces apoptosis in breast cancer cells and regression of tumors in nude mice.

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BACKGROUND Estrogen receptors (ER) are expressed in about two thirds of human breast cancer, and are an important pharmacological target for treatment of these tumors. Dominant negative forms of the ER have been suggested as an alternative method to disrupt ER function. In this study, we examined

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