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Chloroquine in combination with aptamer-modified nanocomplexes for tumor vessel normalization and efficient erlotinib/Survivin shRNA co-delivery to overcome drug resistance in EGFR-mutated non-small cell lung cancer.

Identifieur interne : 000C44 ( Main/Exploration ); précédent : 000C43; suivant : 000C45

Chloroquine in combination with aptamer-modified nanocomplexes for tumor vessel normalization and efficient erlotinib/Survivin shRNA co-delivery to overcome drug resistance in EGFR-mutated non-small cell lung cancer.

Auteurs : Tingting Lv [République populaire de Chine] ; Ziying Li [République populaire de Chine] ; Liang Xu [République populaire de Chine] ; Yingying Zhang [République populaire de Chine] ; Haijun Chen [République populaire de Chine] ; Yu Gao [République populaire de Chine]

Source :

RBID : pubmed:29960010

Descripteurs français

English descriptors

Abstract

Although novel molecular targeted drugs have been recognized as an effective therapy for non-small cell lung cancer (NSCLC) harboring epidermal growth factor receptor (EGFR) activating mutations, their efficacy fails to meet the expectation due to the acquired resistance in tumors. Up-regulation of the anti-apoptotic protein Survivin was shown to contribute to the resistance to EGFR tyrosine kinase inhibitors (TKI) in EGFR mutation-positive NSCLC. However, the unorganized tumor blood vessels impeded drug penetration into tumor tissue. The resulting insufficient intracellular drug/gene delivery in drug-resistant cancer cells remarkably weakened the drug efficacy in NSCLC. In this work, a multi-functional drug delivery system AP/ES was developed by using anti-EGFR aptamer (Apt)-modified polyamidoamine to co-deliver erlotinib and Survivin-shRNA. Chloroquine (CQ) was used in combination with AP/ES to normalize tumor vessels for sufficient drug/gene delivery to overcome drug resistance in NSCLC cells. The obtained AP/ES possessed desired physicochemical properties, good biostability, controlled drug release profiles, and strong selectivity to EGFR-mutated NSCLC mediated by Apt. CQ not only enhanced endosomal escape ability of AP/ES for efficient gene transfection to inhibit Survivin, but also showed strong vessel-normalization ability to improve tumor microcirculation, which further promoted drug delivery and enhanced drug efficacy in erlotinib-resistant NSCLC cells. Our innovative gene/drug co-delivery system in combination with CQ showed a promising outcome in fighting against erlotinib resistance both in vitro and in vivo. This work indicates that normalization of tumor vessels could help intracellular erlotinib/Survivin-shRNA delivery and the down-regulation of Survivin could act synergistically with erlotinib for reversal of erlotinib resistance in EGFR mutation-positive NSCLC.

DOI: 10.1016/j.actbio.2018.06.034
PubMed: 29960010


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<term>Aptamers, Nucleotide (pharmacology)</term>
<term>Carcinoma, Non-Small-Cell Lung (drug therapy)</term>
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<term>Chloroquine (pharmacokinetics)</term>
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<term>Récepteurs ErbB</term>
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<term>Mice, Nude</term>
<term>Mutation</term>
<term>Survivin</term>
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<term>Mutation</term>
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<term>Petit ARN interférent</term>
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<front>
<div type="abstract" xml:lang="en">Although novel molecular targeted drugs have been recognized as an effective therapy for non-small cell lung cancer (NSCLC) harboring epidermal growth factor receptor (EGFR) activating mutations, their efficacy fails to meet the expectation due to the acquired resistance in tumors. Up-regulation of the anti-apoptotic protein Survivin was shown to contribute to the resistance to EGFR tyrosine kinase inhibitors (TKI) in EGFR mutation-positive NSCLC. However, the unorganized tumor blood vessels impeded drug penetration into tumor tissue. The resulting insufficient intracellular drug/gene delivery in drug-resistant cancer cells remarkably weakened the drug efficacy in NSCLC. In this work, a multi-functional drug delivery system AP/ES was developed by using anti-EGFR aptamer (Apt)-modified polyamidoamine to co-deliver erlotinib and Survivin-shRNA. Chloroquine (CQ) was used in combination with AP/ES to normalize tumor vessels for sufficient drug/gene delivery to overcome drug resistance in NSCLC cells. The obtained AP/ES possessed desired physicochemical properties, good biostability, controlled drug release profiles, and strong selectivity to EGFR-mutated NSCLC mediated by Apt. CQ not only enhanced endosomal escape ability of AP/ES for efficient gene transfection to inhibit Survivin, but also showed strong vessel-normalization ability to improve tumor microcirculation, which further promoted drug delivery and enhanced drug efficacy in erlotinib-resistant NSCLC cells. Our innovative gene/drug co-delivery system in combination with CQ showed a promising outcome in fighting against erlotinib resistance both in vitro and in vivo. This work indicates that normalization of tumor vessels could help intracellular erlotinib/Survivin-shRNA delivery and the down-regulation of Survivin could act synergistically with erlotinib for reversal of erlotinib resistance in EGFR mutation-positive NSCLC.</div>
</front>
</TEI>
<affiliations>
<list>
<country>
<li>République populaire de Chine</li>
</country>
</list>
<tree>
<country name="République populaire de Chine">
<noRegion>
<name sortKey="Lv, Tingting" sort="Lv, Tingting" uniqKey="Lv T" first="Tingting" last="Lv">Tingting Lv</name>
</noRegion>
<name sortKey="Chen, Haijun" sort="Chen, Haijun" uniqKey="Chen H" first="Haijun" last="Chen">Haijun Chen</name>
<name sortKey="Gao, Yu" sort="Gao, Yu" uniqKey="Gao Y" first="Yu" last="Gao">Yu Gao</name>
<name sortKey="Li, Ziying" sort="Li, Ziying" uniqKey="Li Z" first="Ziying" last="Li">Ziying Li</name>
<name sortKey="Xu, Liang" sort="Xu, Liang" uniqKey="Xu L" first="Liang" last="Xu">Liang Xu</name>
<name sortKey="Zhang, Yingying" sort="Zhang, Yingying" uniqKey="Zhang Y" first="Yingying" last="Zhang">Yingying Zhang</name>
</country>
</tree>
</affiliations>
</record>

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