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Polymer-lipid hybrid anti-HER2 nanoparticles for targeted salinomycin delivery to HER2-positive breast cancer stem cells and cancer cells

Breast cancer stem cells (CSCs) are responsible for the initiation, recurrence, and metastasis of breast cancer. Sufficient evidence has established that breast cancer cells can spontaneously turn into breast CSCs. Thus, it is essential to simultaneously target breast CSCs and cancer cells to maximi...

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Published in:International journal of nanomedicine 2017-01, Vol.12, p.6909-6921
Main Authors: Li, Jun, Xu, Wenqing, Yuan, Xiaoli, Chen, Huaiwen, Song, Hao, Wang, Bingquan, Han, Jun
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container_title International journal of nanomedicine
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creator Li, Jun
Xu, Wenqing
Yuan, Xiaoli
Chen, Huaiwen
Song, Hao
Wang, Bingquan
Han, Jun
description Breast cancer stem cells (CSCs) are responsible for the initiation, recurrence, and metastasis of breast cancer. Sufficient evidence has established that breast cancer cells can spontaneously turn into breast CSCs. Thus, it is essential to simultaneously target breast CSCs and cancer cells to maximize the efficacy of breast cancer therapy. HER2 has been found to be overexpressed in both breast CSCs and cancer cells. We developed salinomycin-loaded polymer-lipid hybrid anti-HER2 nanoparticles (Sali-NP-HER2) to target both HER2-positive breast CSCs and cancer cells. The antitumor activity of Sali-NP-HER2 constructed by conjugating anti-HER2 antibodies to polymer-lipid salinomycin nanoparticles was evaluated in vitro and in vivo. Sali-NP-HER2 efficiently bound to HER2-positive breast CSCs and cancer cells, resulting in enhanced cytotoxic effects compared with non-targeted nanoparticles or salinomycin. In mice bearing breast cancer xenografts, administration of Sali-NP-HER2 exhibited superior efficacy in inhibiting tumor growth. Sali-NP-HER2 reduced the breast tumorsphere formation rate and the proportion of breast CSCs more effectively than non-targeted nanoparticles or salinomycin alone. Sali-NP-HER2 represents a promising approach in treating HER2-positive breast cancer by targeting both breast CSCs and cancer cells.
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Sufficient evidence has established that breast cancer cells can spontaneously turn into breast CSCs. Thus, it is essential to simultaneously target breast CSCs and cancer cells to maximize the efficacy of breast cancer therapy. HER2 has been found to be overexpressed in both breast CSCs and cancer cells. We developed salinomycin-loaded polymer-lipid hybrid anti-HER2 nanoparticles (Sali-NP-HER2) to target both HER2-positive breast CSCs and cancer cells. The antitumor activity of Sali-NP-HER2 constructed by conjugating anti-HER2 antibodies to polymer-lipid salinomycin nanoparticles was evaluated in vitro and in vivo. Sali-NP-HER2 efficiently bound to HER2-positive breast CSCs and cancer cells, resulting in enhanced cytotoxic effects compared with non-targeted nanoparticles or salinomycin. In mice bearing breast cancer xenografts, administration of Sali-NP-HER2 exhibited superior efficacy in inhibiting tumor growth. Sali-NP-HER2 reduced the breast tumorsphere formation rate and the proportion of breast CSCs more effectively than non-targeted nanoparticles or salinomycin alone. 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Sufficient evidence has established that breast cancer cells can spontaneously turn into breast CSCs. Thus, it is essential to simultaneously target breast CSCs and cancer cells to maximize the efficacy of breast cancer therapy. HER2 has been found to be overexpressed in both breast CSCs and cancer cells. We developed salinomycin-loaded polymer-lipid hybrid anti-HER2 nanoparticles (Sali-NP-HER2) to target both HER2-positive breast CSCs and cancer cells. The antitumor activity of Sali-NP-HER2 constructed by conjugating anti-HER2 antibodies to polymer-lipid salinomycin nanoparticles was evaluated in vitro and in vivo. Sali-NP-HER2 efficiently bound to HER2-positive breast CSCs and cancer cells, resulting in enhanced cytotoxic effects compared with non-targeted nanoparticles or salinomycin. In mice bearing breast cancer xenografts, administration of Sali-NP-HER2 exhibited superior efficacy in inhibiting tumor growth. 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source Open Access: PubMed Central; Publicly Available Content Database; Taylor & Francis Open Access Journals
subjects Animals
Antibodies
Antibodies, Monoclonal - chemistry
Antibodies, Monoclonal - pharmacology
Aqueous solutions
Biocompatibility
Biomedical materials
Breast cancer
Breast Neoplasms - drug therapy
Breast Neoplasms - metabolism
Breast Neoplasms - pathology
Cancer cells
Cancer metastasis
Cancer stem cells
Cancer therapies
Cell Line, Tumor
Cytotoxicity
Dehydrogenases
Drug delivery systems
Drug Delivery Systems - methods
Female
Health aspects
HER2
Humans
Lipids
Lipids - chemistry
Liver cancer
Metastasis
Mice
Nanoparticles
Nanoparticles - administration & dosage
Nanoparticles - chemistry
Neoplastic Stem Cells - drug effects
Neoplastic Stem Cells - pathology
Original Research
Polyethylene glycol
Polymers
Polymers - chemistry
Pyrans - administration & dosage
Receptor, ErbB-2 - antagonists & inhibitors
Receptor, ErbB-2 - immunology
Receptor, ErbB-2 - metabolism
Salinomycin
Stem cells
Tumorigenesis
Xenograft Model Antitumor Assays
title Polymer-lipid hybrid anti-HER2 nanoparticles for targeted salinomycin delivery to HER2-positive breast cancer stem cells and cancer cells
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