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Hu LL, Meng J, Zhang DD, Chen ML, Shu Y, Wang JH. Functionalization of mesoporous organosilica nanocarrier for pH/glutathione dual-responsive drug delivery and imaging of cancer therapy process. Talanta 2017; 177:203-211. [PMID: 29108577 DOI: 10.1016/j.talanta.2017.07.017] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2017] [Revised: 06/07/2017] [Accepted: 07/03/2017] [Indexed: 12/16/2022]
Abstract
A multifunctional drug nanocarrier is developed by incorporating acetaldehyde-modified-cystine (AMC) into mesoporous organosilica nanoparticles (MONs), shortly termed as MONs-AMC. The anticancer drug doxorubicin (DOX) links directly to MONs-AMC through electrostatic interaction between DOX and AMC to produce a conjugate, MONs-AMC-DOX, with a drug loading efficiency of 26.24 ± 1.35%, corresponding to a loading capacity of 0.26 ± 0.01mgmg-1 for DOX. Schiff base AMC contains a -S-S- bond and two -C˭N- bonds which cleave in the presence of certain level of GSH and in an acidic medium, providing MONs-AMC-DOX the capability for triggering pH and glutathione (GSH) dual-responsive drug release. Further, the self-fluorescent nature of AMC offers the tracing capability without the need of fluorescent label, which facilitates real-time tracing of the drug delivery and cancer therapy process. With 10mmolL-1 GSH and at pH 5.0, a drug release efficiency of 52.27 ± 2.84% is achieved. The intracellular drug release process is traced with confocal laser scanning microscope by monitoring the green fluorescence of MONs-AMC-DOX and red fluorescence of DOX with excitation at 408nm and 488nm, respectively. The drug loaded nanocarriers exhibit a time-dependent cellular uptake behavior, providing an enhanced therapeutic effect to A549 cancer cells.
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Affiliation(s)
- Lin-Lin Hu
- Research Center for Analytical Sciences, College of Sciences, Northeastern University, Box 332, Shenyang 110819, China
| | - Jie Meng
- Research Center for Analytical Sciences, College of Sciences, Northeastern University, Box 332, Shenyang 110819, China
| | - Dan-Dan Zhang
- Research Center for Analytical Sciences, College of Sciences, Northeastern University, Box 332, Shenyang 110819, China
| | - Ming-Li Chen
- Research Center for Analytical Sciences, College of Sciences, Northeastern University, Box 332, Shenyang 110819, China
| | - Yang Shu
- Institute of Biotechnology, College of Life and Health Sciences, Northeastern University, Shenyang 110169, China.
| | - Jian-Hua Wang
- Research Center for Analytical Sciences, College of Sciences, Northeastern University, Box 332, Shenyang 110819, China.
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Zhang Y, Mao L, Liu J, Liu T. Self-fluorescent drug delivery vector based on genipin-crosslinked polyethylenimine conjugated globin nanoparticle. Mater Sci Eng C Mater Biol Appl 2017; 71:17-24. [PMID: 27987695 DOI: 10.1016/j.msec.2016.09.059] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2016] [Revised: 08/23/2016] [Accepted: 09/26/2016] [Indexed: 11/20/2022]
Abstract
A kind of self-fluorescent, biocompatible, and low-toxic Genipin crosslinked Globin-PEI nanoparticle (Gb-G-PEI NP) with high enzymolysis-stability and photo-stability was synthesized successfully. The properties of the Gb-G-PEI NP were characterized, including its particle size, surface zeta potential, morphology, paclitaxel (PTX) loading capacity and release. The Gb-G-PEI NPs as imaging probe were investigated by Confocal Laser Scanning Microscope (CLSM) in vitro and by fluorescence imaging system in vivo. Cell imaging results showed that the tumor cell line (HepG-2) had the faster cell uptake rate and metabolism rate than the normal cell line (L-O2), this difference showed its tumor selectivity. MTT assay revealed that the PTX-loaded Gb-G-PEI NPs showed almost the equal potence to tumor cell HepG-2 as the free PTX at the same PTX concentration, while a lower cytotoxicity to normal cell L-O2, suggesting its promising utilization as a drug delivery system. The imaging on mice demonstrated the possibility of the self-fluorescent Gb-G-PEI NPs as probe in vivo. So Gb-G-PEI NPs can be potentially utilized as both tracking marker and tumor cell selective drug delivery system in the biomaterial field.
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Chen G, Wang L, Cordie T, Vokoun C, Eliceiri KW, Gong S. Multi-functional self-fluorescent unimolecular micelles for tumor-targeted drug delivery and bioimaging. Biomaterials 2015; 47:41-50. [PMID: 25682159 DOI: 10.1016/j.biomaterials.2015.01.006] [Citation(s) in RCA: 83] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2014] [Revised: 12/19/2014] [Accepted: 01/15/2015] [Indexed: 12/17/2022]
Abstract
A novel type of self-fluorescent unimolecular micelle nanoparticle (NP) formed by multi-arm star amphiphilic block copolymer, Boltron® H40 (H40, a 4th generation hyperbranched polymer)-biodegradable photo-luminescent polymer (BPLP)-poly(ethylene glycol) (PEG) conjugated with cRGD peptide (i.e., H40-BPLP-PEG-cRGD) was designed, synthesized, and characterized. The hydrophobic BPLP segment was self-fluorescent, thereby making the unimolecular micelle NP self-fluorescent. cRGD peptides, which can effectively target αvβ3 integrin-expressing tumor neovasculature and tumor cells, were selectively conjugated onto the surface of the micelles to offer active tumor-targeting ability. This unique self-fluorescent unimolecular micelle exhibited excellent photostability and low cytotoxicity, making it an attractive bioimaging probe for NP tracking for a variety of microscopy techniques including fluorescent microscopy, confocal laser scanning microscopy (CLSM), and two-photon microscopy. Moreover, this self-fluorescent unimolecular micelle NP also demonstrated excellent stability in aqueous solutions due to its covalent nature, high drug loading level, pH-controlled drug release, and passive and active tumor-targeting abilities, thereby making it a promising nanoplatform for targeted cancer theranostics.
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Affiliation(s)
- Guojun Chen
- Materials Science Program, University of Wisconsin-Madison, Madison, WI 53715, USA; Wisconsin Institutes for Discovery, University of Wisconsin-Madison, Madison, WI 53715, USA
| | - Liwei Wang
- Wisconsin Institutes for Discovery, University of Wisconsin-Madison, Madison, WI 53715, USA; Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI 53715, USA
| | - Travis Cordie
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI 53715, USA
| | - Corinne Vokoun
- Laboratory for Optical and Computational Instrumentation, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Kevin W Eliceiri
- Laboratory for Optical and Computational Instrumentation, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Shaoqin Gong
- Materials Science Program, University of Wisconsin-Madison, Madison, WI 53715, USA; Wisconsin Institutes for Discovery, University of Wisconsin-Madison, Madison, WI 53715, USA; Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI 53715, USA; University of Wisconsin Carbone Cancer Center, University of Wisconsin-Madison, Madison, WI 53792, USA.
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