Smart pH-responsive nanocarriers based on nano-graphene oxide for combined chemo- and photothermal therapy overcoming drug resistance
A pH-responsive nanocarrier is developed by coating nanoscale graphene oxide (NGO) with dual types of polymers, polyethylene glycol (PEG) and poly(allylamine hydrochloride) (PAH), the latter of which is then modified with 2,3-dimethylmaleic anhydride (DA) to acquire pH-dependent charge reversibility...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
| Published: |
Wiley - V C H Verlag GmbH & Co. KGaA
2014
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| Online Access: | http://hdl.handle.net/20.500.11937/72489 |
| _version_ | 1848762763497701376 |
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| author | Feng, L. Li, K. Shi, X. Gao, M. Liu, Jian Liu, Z. |
| author_facet | Feng, L. Li, K. Shi, X. Gao, M. Liu, Jian Liu, Z. |
| author_sort | Feng, L. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | A pH-responsive nanocarrier is developed by coating nanoscale graphene oxide (NGO) with dual types of polymers, polyethylene glycol (PEG) and poly(allylamine hydrochloride) (PAH), the latter of which is then modified with 2,3-dimethylmaleic anhydride (DA) to acquire pH-dependent charge reversibility. After loading with doxorubicin (DOX), a chemotherapy drug, the obtained NGO-PEG-DA/DOX complex exhibits a dual pH-responsiveness, showing markedly enhanced cellular uptake under the tumor microenvironmental pH, and accelerated DOX release under a further lowered pH inside cell lysosomes. Combining such a unique behavior with subsequently slow efflux of DOX, NGO-PEG-DA/DOX offers remarkably improved cell killing for drug-resistant cancer cells under the tumor microenvironmental pH in comparison with free DOX. Exploiting its excellent photothermal conversion ability, combined chemo- and photothermal therapy is further demonstrated using NGO-PEG-DA/DOX, realizing a synergistic therapeutic effect. This work presents a novel design of surface chemistry on NGO for the development of smart drug delivery systems responding to the tumor microenvironment and external physical stimulus, with the potential to overcome drug resistance. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. |
| first_indexed | 2025-11-14T10:52:44Z |
| format | Journal Article |
| id | curtin-20.500.11937-72489 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:52:44Z |
| publishDate | 2014 |
| publisher | Wiley - V C H Verlag GmbH & Co. KGaA |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-724892018-12-13T09:33:39Z Smart pH-responsive nanocarriers based on nano-graphene oxide for combined chemo- and photothermal therapy overcoming drug resistance Feng, L. Li, K. Shi, X. Gao, M. Liu, Jian Liu, Z. A pH-responsive nanocarrier is developed by coating nanoscale graphene oxide (NGO) with dual types of polymers, polyethylene glycol (PEG) and poly(allylamine hydrochloride) (PAH), the latter of which is then modified with 2,3-dimethylmaleic anhydride (DA) to acquire pH-dependent charge reversibility. After loading with doxorubicin (DOX), a chemotherapy drug, the obtained NGO-PEG-DA/DOX complex exhibits a dual pH-responsiveness, showing markedly enhanced cellular uptake under the tumor microenvironmental pH, and accelerated DOX release under a further lowered pH inside cell lysosomes. Combining such a unique behavior with subsequently slow efflux of DOX, NGO-PEG-DA/DOX offers remarkably improved cell killing for drug-resistant cancer cells under the tumor microenvironmental pH in comparison with free DOX. Exploiting its excellent photothermal conversion ability, combined chemo- and photothermal therapy is further demonstrated using NGO-PEG-DA/DOX, realizing a synergistic therapeutic effect. This work presents a novel design of surface chemistry on NGO for the development of smart drug delivery systems responding to the tumor microenvironment and external physical stimulus, with the potential to overcome drug resistance. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. 2014 Journal Article http://hdl.handle.net/20.500.11937/72489 10.1002/adhm.201300549 Wiley - V C H Verlag GmbH & Co. KGaA restricted |
| spellingShingle | Feng, L. Li, K. Shi, X. Gao, M. Liu, Jian Liu, Z. Smart pH-responsive nanocarriers based on nano-graphene oxide for combined chemo- and photothermal therapy overcoming drug resistance |
| title | Smart pH-responsive nanocarriers based on nano-graphene oxide for combined chemo- and photothermal therapy overcoming drug resistance |
| title_full | Smart pH-responsive nanocarriers based on nano-graphene oxide for combined chemo- and photothermal therapy overcoming drug resistance |
| title_fullStr | Smart pH-responsive nanocarriers based on nano-graphene oxide for combined chemo- and photothermal therapy overcoming drug resistance |
| title_full_unstemmed | Smart pH-responsive nanocarriers based on nano-graphene oxide for combined chemo- and photothermal therapy overcoming drug resistance |
| title_short | Smart pH-responsive nanocarriers based on nano-graphene oxide for combined chemo- and photothermal therapy overcoming drug resistance |
| title_sort | smart ph-responsive nanocarriers based on nano-graphene oxide for combined chemo- and photothermal therapy overcoming drug resistance |
| url | http://hdl.handle.net/20.500.11937/72489 |