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A double-network poly(Nɛ-acryloyl L-lysine)/hyaluronic acid hydrogel as a mimic of the breast tumor microenvironment.

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To mimic the structure of breast tumor microenvironment, novel double-network poly(Nɛ-acryloyl L-lysine)/hyaluronic acid (pLysAAm/HA) hydrogels were fabricated by a two-step photo-polymerization process for in vitro three-dimensional (3D) cell culture. The morphology, mechanical properties, swelling

A photo-polymerized poly(Nε-acryloyl l-lysine) hydrogel for 3D culture of MCF-7 breast cancer cells.

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The most common in vitro cell culture platform, standard two-dimensional (2D) monolayer cell culture, often fails to mimic the tumor microenvironment, while animal models complicate research on the effect of individual factors on cell behaviors. Both are unsatisfactory in the research of molecular

Methotrexate-conjugated L-lysine coated iron oxide magnetic nanoparticles for inhibition of MCF-7 breast cancer cells.

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Methotrexate (MTX), a stoichiometric inhibitor of dihydrofolate reductase enzyme, is a chemotherapeutic agent for treating a diversity of neoplasms. In this study, we design and developed a new formulation of MTX that serves as drug carrier and examined its cytotoxic effect in vitro. This target

pH-Responsive charge switchable PEGylated ε-poly-l-lysine polymeric nanoparticles-assisted combination therapy for improving breast cancer treatment

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Stimuli-responsive nanotechnology-mediated drug co-delivery system is a notable strategy to improve access of the systemically administered chemotherapeutics to the tumors. Herein, a tailor-made 2,3-dimethylmaleic-anhydride-poly(ethylene glycol)-ε-poly-l-lysine-doxorubicin /lapatinib polymeric

Evaluation of polyinosinic-polycytidylic and poly-L-lysine in metastatic breast cancer.

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The efficacy of nuclease-resistant Chol-siRNA in primary breast tumors following complexation with PLL-PEG(5K).

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Modifying the sense strand of nuclease-resistant siRNA with 3'-cholesterol (Chol-*siRNA) increases mRNA suppression after i.v. administration but with relatively low efficacy. We previously found evidence in vitro that suggests complexation of Chol-siRNA with PLL-PEG(5K), a block copolymer of

Radiolabeled L-lysine for tumor imaging.

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OBJECTIVE The aims of this study were to label the versatile amino acid l-lysine with (99m)Tc using 2,3-dimercapto-succinic acid (DMSA) as a chelator, and to assess its tumor imaging feasibility under in vivo and in vitro conditions, and finally to determine the subcellular biodistribution of this

Incorporation of ortho-carbaboranyl-Nε-modified L-lysine into neuropeptide Y receptor Y1- and Y2-selective analogues.

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Nontoxic ortho-carbaborane is one of the most promising structure for boron neutron capture therapy (BNCT). For directed uptake of ortho-carbaborane by tumor cells, receptor-subtype selective neuropeptide Y (NPY) and its derivatives were modified with ortho-carbaborane. The derivative [F(7),

Anti-metastatic effect of jolkinolide B and the mechanism of activity in breast cancer MDA-MB-231 cells.

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Tumor metastasis is the main cause of mortality in cancer patients. However, no effective therapies are currently available to prevent metastasis. Cell adhesion to the extracellular matrix (ECM) is crucial in cancer progression and metastasis. Thus, suppression of cell adhesion may be an effective

Immunocytochemical detection of breast cancer cells: a comparison of three attachment factors.

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The evaluation of contaminating breast cancer cells in hematopoietic grafts is of considerable importance for monitoring the efficiency of purging procedures. We report a comparison of three systems for the in vitro detection and enumeration of metastatic breast cancer cells. Breast cancer cells

Competitive ELISA method for novel estrogen-negative breast cancer biomarker quantitation.

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Estrogen-negative (ER^-) breast cancer, is recognized as an aggressive subtype, more difficult to treat, with poor survival and prognosis. They are hormonally unresponsive, with no readily effective and specific target therapy. We have previously identified N^w-hydroxy L-Arginine

Glycodendrimers: novel glycotope isosteres unmasking sugar coding. case study with T-antigen markers from breast cancer MUC1 glycoprotein.

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Glycodendrimers are relatively novel synthetic biomacromolecules that are made of biologically relevant carbohydrate ligands constructed at the periphery of a wide range of highly functionalized and repetitive scaffolds having varied molecular weights and structures. They were aimed to fill the gap

Enhancement of Capture Sensitivity for Circulating Tumor Cells in a Breast Cancer Patient's Blood by Silicon Nanowire Platform.

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The separation of circulating tumor cells (CTCs) from the blood of cancer patients with high sensitivity is an essential technique for selecting chemotherapeutic agents at a patient-by-patient level. Recently, various research groups have reported a nanostructure-based platform for rare cell capture

Design and in vitro evaluation of layer by layer siRNA nanovectors targeting breast tumor initiating cells.

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Efficient therapeutics and early detection has helped to increase breast cancer survival rates over the years. However, the recurrence of breast cancer remains to be a problem and this may be due to the presence of a small population of cells, called tumor initiating cells (TICs). Breast TICs are

Poly-L-Lysine Mediated Synthesis of Gold Nanoparticles and Biological Effects.

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By using poly-L-lysine (PLL) as reducing agent and stabilizer, a novel method for synthesizing gold nanoparticles (GNP) under mild temperature conditions was reported. The morphology and size of these GNP could be easily controlled by changing the amount of PLL and temperature. And the GNPs prepared

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