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The use of HA oligosaccharide-loaded nanoparticles to breach the endogenous hyaluronan glycocalyx for breast cancer therapy.

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Breast cancer is characterized by a stromal microenvironment consisting of highly abundant hyaluronan (HA). The role of the HA-coat as a 'fortress' fencing off tumor cells from drugs applied in the circulation has been largely neglected by previous research efforts. In this study we demonstrated

Structures of the oligosaccharide chains of two forms of alpha 1-acid glycoprotein purified from liver metastases of lung, colon, and breast tumors.

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Two forms of alpha 1-acid glycoprotein with common immunological determinants and almost identical amino acid compositions but different amounts of carbohydrate were isolated from liver metastases of primary colon, lung, and breast tumors by extraction with perchloric acid, gel filtration on

Oligosaccharide sequence of human breast cancer cell heparan sulfate with high affinity for laminin.

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Laminin-1 is a basement membrane glycoprotein implicated in tumor-host adhesion, which involves the cell-binding domain(s) of laminin-1 and tumor cell surface heparan sulfate (HS). The specific tumor cell surface HS oligosaccharide sequences that are necessary for binding to laminin-1 have not been

Helix pomatia agglutinin lectin-binding oligosaccharides of aggressive breast cancer.

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Predicting long-term outcome after breast-cancer diagnosis remains problematic, particularly for patients with clinically small, axillary lymph node- negative tumours. Evidence suggests that the lectin Helix pomatia agglutinin (HPA) identifies oligosaccharides associated with poor-prognosis cancer.

Therapeutic potential of hyaluronan oligosaccharides for bone metastasis of breast cancer.

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Hyaluronan (HA) oligosaccharides were reported to have suppressive effects on various malignant tumors via disruption of receptor HA interactions. However, no studies have focused on the effects of HA oligosaccharides on bone metastasis of breast cancer. In this study, we clarified the effective

Suppression of metastasis of human breast cancer cells by chitosan oligosaccharides.

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The present study investigated the antimetastatic property of chitosan oligosaccharides (COS) by evaluating motility, invasion, and the amount and activity of MMP-9 in MDA-MB-231 human breast carcinoma cells. Treatment of MDA-MB-231 cells with increasing concentrations of COS led to a

Breast cancer progression is associated with a reduction in the diversity of sialylated and neutral oligosaccharides.

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Changes in the oligosaccharides attached to glycoproteins and glycolipids have been observed in a variety of malignancies. To understand the relationship between oligosaccharide expression and breast cancer progression we extracted and mapped the sialylated and neutral oligosaccharides from primary

Expression of L-PHA-binding proteins in breast cancer: reconstitution and molecular characterization of beta 1-6 branched oligosaccharides in three-dimensional cell culture.

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Expression of beta 1-6 branched oligosaccharides in human breast cancer cells was investigated in vivo and in vitro. Lectin histochemical and lectin blotting analyses of surgically resected specimens were performed using L-PHA (phaseolus vulgaris leukoagglutinin) lectin, which binds to beta 1-6

Prognostic significance of reduced expression of beta-N-acetylgalactosaminylated N-linked oligosaccharides in human breast cancer.

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Our previous studies showed that expression of the GalNAcbeta1-->4GlcNAc group on N-linked oligosaccharides is associated with functional differentiation of the bovine mammary gland. In the present study, the occurrence of the GalNAcbeta1-->4GlcNAc group was established in human milk proteins and

Biocompatible Chitosan Oligosaccharide Modified Gold Nanorods as Highly Effective Photothermal Agents for Ablation of Breast Cancer Cells.

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Photothermal therapy (PTT) using biocompatible nanomaterials have recently attracted much attention as a novel candidate technique for cancer therapy. In this work we report the performance of newly synthesized multidentate chitosan oligosaccharide modified gold nanorods (AuNRs-LA-COS) as novel

Chitosan Oligosaccharide Lactate Coated Hydroxyapatite Nanoparticles as a Vehicle for the Delivery of Steroid Drugs and the Targeting of Breast Cancer Cells.

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Low targeting efficiency and fast metabolism of antineoplastic drugs are hindrances to effective chemotherapies and there is an ongoing search for better drugs, but also better carriers. Steroid derivatives, 3β-hydroxy-16-hydroxymino-androst-5-en-17-one (A) and

Enhanced membrane-type 1 matrix metalloproteinase expression by hyaluronan oligosaccharides in breast cancer cells facilitates CD44 cleavage and tumor cell migration.

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Hyaluronan (HA), a component of the extracellular matrix, plays an important role in cell-cell adhesion and cell migration. Membrane type 1-matrix metalloproteinase (MT1‑MMP) is often expressed in invasive cancer cells. CD44, a transmembrane receptor for HA, is implicated in various

Preparation, Characterization, and Inhibition of Hyaluronic Acid Oligosaccharides in Triple-Negative Breast Cancer.

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Hyaluronic acid (hyaluronan, HA) is a critical component of the extracellular matrix and plays an important biological function of interacting with different molecules and receptors. In this study, both odd- and even-numbered HA oligosaccharides (HAOs) with specific degrees of polymerization (DP)

Enhanced Therapeutic Efficacy of Doxorubicin for Breast Cancer Using Chitosan Oligosaccharide-Modified Halloysite Nanotubes.

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Halloysite nanotubes (HNTs) are natural aluminosilicates with unique hollow lumen structure, also having high specific area, good biocompatibility, nontoxicity, and low price. Here, we designed a chitosan oligosaccharide-grafted HNTs (HNTs-g-COS) as a doxorubicin (DOX) carrier for treating breast

Modulatory effects of heparin and short-length oligosaccharides of heparin on the metastasis and growth of LMD MDA-MB 231 breast cancer cells in vivo.

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Expression of the chemokine receptor CXCR4 allows breast cancer cells to migrate towards specific metastatic target sites which constitutively express CXCL12. In this study, we determined whether this interaction could be disrupted using short-chain length heparin oligosaccharides. Radioligand

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