Maria J.M. Carneiro , Cláudio B.A. Paula , Irisvan S. Ribeiro , Raelle F. Gomes , Jéssica M.T. Souza , José D.B. Marinho Filho , Ana J. Araújo , Rosemayre S. Freire , Jeanlex S. Sousa , R.N. Costa Filho , Judith P.A. Feitosa , Regina C.M. de Paula
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引用次数: 0
Abstract
Chemotherapy is one of the most widely used modalities in the treatment of several types of cancer, but the effectiveness of monotherapy is generally limited. To overcome these limitations, the combination of chemotherapy and photodynamic therapy (PDT) in nanocarrier systems has been investigated. In this study, nanoparticles co-incorporated with doxorubicin (DOX) and curcumin (CUR) were prepared for chemo-photodynamic therapy in cancer cells. DOX was conjugated to the dextran-g-PNIPAM copolymer (CP) via the Schiff base formation reaction, while CUR was co-incorporated by non-covalent interaction. The CP-DOX and CP-DOX/CUR nanoparticles showed good drug loading and sizes smaller than 90 nm. In addition, the CP-DOX/CUR nanoparticles exhibited pH-dependent release profiles and curcumin chemical stability tests showed that the nanoparticles protected curcumin from degradation processes. In vitro cytotoxicity assays showed that DOX- and DOX/CUR-loaded nanoparticles could inhibit the proliferation of colon cancer cells (HCT-116) and promote reduced cytotoxicity in non-tumor murine fibroblast cells (L929). Using PDT, DOX/CUR-loaded nanoparticles caused greater cytotoxicity compared to DOX-loaded nanoparticles. Therefore, DOX/CUR-loaded nanoparticles are promising to promote selective co-release of drugs in cancer cells and have potential use in chemo-photodynamic therapy.
期刊介绍:
The journal includes papers in the following areas:
– Simple organic liquids and mixtures
– Ionic liquids
– Surfactant solutions (including micelles and vesicles) and liquid interfaces
– Colloidal solutions and nanoparticles
– Thermotropic and lyotropic liquid crystals
– Ferrofluids
– Water, aqueous solutions and other hydrogen-bonded liquids
– Lubricants, polymer solutions and melts
– Molten metals and salts
– Phase transitions and critical phenomena in liquids and confined fluids
– Self assembly in complex liquids.– Biomolecules in solution
The emphasis is on the molecular (or microscopic) understanding of particular liquids or liquid systems, especially concerning structure, dynamics and intermolecular forces. The experimental techniques used may include:
– Conventional spectroscopy (mid-IR and far-IR, Raman, NMR, etc.)
– Non-linear optics and time resolved spectroscopy (psec, fsec, asec, ISRS, etc.)
– Light scattering (Rayleigh, Brillouin, PCS, etc.)
– Dielectric relaxation
– X-ray and neutron scattering and diffraction.
Experimental studies, computer simulations (MD or MC) and analytical theory will be considered for publication; papers just reporting experimental results that do not contribute to the understanding of the fundamentals of molecular and ionic liquids will not be accepted. Only papers of a non-routine nature and advancing the field will be considered for publication.