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Self-assembled nanoparticles of hyaluronic acid/poly( dl-lactide-co-glycolide) block copolymer

We synthesized block copolymer composed of hyaluronic acid (HA) and poly( dl-lactide-co-glycolide) (PLGA) (HAbLG) for antitumor targeting. 1H NMR was employed to confirm synthesis of block copolymer. At 1H NMR study, HabLG nanoparticles showed HA intrinsic peaks only at D 2O, indicating that they co...

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Published in:Colloids and surfaces, B, Biointerfaces B, Biointerfaces, 2012-02, Vol.90, p.28-35
Main Authors: Jeong, Young-Il, Kim, Do Hyung, Chung, Chung-Wook, Yoo, Jin Ju, Choi, Kyung Ha, Kim, Cy Hyun, Ha, Seung Hee, Kang, Dae Hwan
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cited_by cdi_FETCH-LOGICAL-c456t-faf5018441f6a857d9928b1629abb1fb52541ee5d8224864730ef0a0ade4579e3
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container_start_page 28
container_title Colloids and surfaces, B, Biointerfaces
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creator Jeong, Young-Il
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description We synthesized block copolymer composed of hyaluronic acid (HA) and poly( dl-lactide-co-glycolide) (PLGA) (HAbLG) for antitumor targeting. 1H NMR was employed to confirm synthesis of block copolymer. At 1H NMR study, HabLG nanoparticles showed HA intrinsic peaks only at D 2O, indicating that they contained HA as a hydrophilic outer-shell and PLGA as a inner-core. Anti-tumor activity was studied using CD44-overexpressing HCT-116 human colon carcinoma cells. Addition of doxorubicin (DOX)-incorporated nanoparticles to tumor cells resulted in the expression of a strong red fluorescence color while they expressed very weak fluorescence when CD44 receptor was blocked with free HA. Flow cytometry data also showed similar results, indicating that the fluorescence intensity of tumor cells treated with nanoparticles was significantly decreased when CD44 receptor was blocked. These results indicate that HAbLG nanoparticles were able to target CD44-overexpressing tumor cells via receptor-mediated endocytosis.
doi_str_mv 10.1016/j.colsurfb.2011.09.043
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identifier ISSN: 0927-7765
ispartof Colloids and surfaces, B, Biointerfaces, 2012-02, Vol.90, p.28-35
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subjects Antineoplastic Agents - chemistry
Antineoplastic Agents - metabolism
Antineoplastic Agents - pharmacology
Binding, Competitive
Block copolymer
Block copolymers
Blocking
Carcinoma - drug therapy
Carcinoma - immunology
Carcinoma - pathology
CD44
Cell Line, Tumor
colloids
Colonic Neoplasms - drug therapy
Colonic Neoplasms - immunology
Colonic Neoplasms - pathology
color
colorectal neoplasms
composite polymers
Delayed-Action Preparations - chemistry
Delayed-Action Preparations - metabolism
deuterium oxide
Deuterium Oxide - analysis
Deuterium Oxide - metabolism
doxorubicin
Doxorubicin - chemistry
Doxorubicin - metabolism
Doxorubicin - pharmacology
Drug Carriers - chemistry
Drug Carriers - metabolism
Endocytosis
Flow Cytometry
Fluorescence
Humans
Hyaluronan Receptors - immunology
Hyaluronan Receptors - metabolism
Hyaluronic acid
Hyaluronic Acid - chemistry
hydrophilicity
Hydrophobic and Hydrophilic Interactions
Hydroxyapatite
Lactic Acid - chemistry
Magnetic Resonance Spectroscopy
Molecular Targeted Therapy - methods
Nanoparticles
neoplasm cells
nuclear magnetic resonance spectroscopy
PLGA
Polyglycolic Acid - chemistry
Receptor-mediated endocytosis
Receptors
Tumors
title Self-assembled nanoparticles of hyaluronic acid/poly( dl-lactide-co-glycolide) block copolymer
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