1
|
Jo J, Kim JY, Yun JJ, Lee YJ, Jeong YIL. β-Cyclodextrin Nanophotosensitizers for Redox-Sensitive Delivery of Chlorin e6. Molecules 2023; 28:7398. [PMID: 37959817 PMCID: PMC10648776 DOI: 10.3390/molecules28217398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 10/30/2023] [Accepted: 10/31/2023] [Indexed: 11/15/2023] Open
Abstract
The aim of this study is to prepare redox-sensitive nanophotosensitizers for the targeted delivery of chlorin e6 (Ce6) against cervical cancer. For this purpose, Ce6 was conjugated with β-cyclodextrin (bCD) via a disulfide bond, creating nanophotosensitizers that were fabricated for the redox-sensitive delivery of Ce6 against cancer cells. bCD was treated with succinic anhydride to synthesize succinylated bCD (bCDsu). After that, cystamine was attached to the carboxylic end of bCDsu (bCDsu-ss), and the amine end group of bCDsu-ss was conjugated with Ce6 (bCDsu-ss-Ce6). The chemical composition of bCDsu-ss-Ce6 was confirmed with 1H and 13C NMR spectra. bCDsu-ss-Ce6 nanophotosensitizers were fabricated by a dialysis procedure. They formed small particles with an average particle size of 152.0 ± 23.2 nm. The Ce6 release rate from the bCDsu-ss-Ce6 nanophotosensitizers was accelerated by the addition of glutathione (GSH), indicating that the bCDsu-ss-Ce6 nanophotosensitizers have a redox-sensitive photosensitizer delivery capacity. The bCDsu-ss-Ce6 nanophotosensitizers have a low intrinsic cytotoxicity against CCD986Sk human skin fibroblast cells as well as Ce6 alone. However, the bCDsu-ss-Ce6 nanophotosensitizers showed an improved Ce6 uptake ratio, higher reactive oxygen species (ROS) production, and phototoxicity compared to those of Ce6 alone. GSH addition resulted in a higher Ce6 uptake ratio, ROS generation, and phototoxicity than Ce6 alone, indicating that the bCDsu-ss-Ce6 nanophotosensitizers have a redox-sensitive biological activity in vitro against HeLa human cervical cancer cells. In a tumor xenograft model using HeLa cells, the bCDsu-ss-Ce6 nanophotosensitizers efficiently accumulated in the tumor rather than in normal organs. In other words, the fluorescence intensity in tumor tissues was significantly higher than that of other organs, while Ce6 alone did not specifically target tumor tissue. These results indicated a higher anticancer activity of bCDsu-ss-Ce6 nanophotosensitizers, as demonstrated by their efficient inhibition of the growth of tumors in an in vivo animal tumor xenograft study.
Collapse
Affiliation(s)
- Jaewon Jo
- Gwangju Center, Korea Basic Science Institute, Gwangju 61186, Republic of Korea; (J.J.); (J.Y.K.)
- School of Chemical Engineering, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Ji Yoon Kim
- Gwangju Center, Korea Basic Science Institute, Gwangju 61186, Republic of Korea; (J.J.); (J.Y.K.)
| | - Je-Jung Yun
- Research Center for Environmentally Friendly Agricultural Life Sciences, Jeonnam Bioindustry Foundation, Jeonnam 58275, Republic of Korea;
| | - Young Ju Lee
- Gwangju Center, Korea Basic Science Institute, Gwangju 61186, Republic of Korea; (J.J.); (J.Y.K.)
| | - Young-IL Jeong
- Department of Dental Materials, College of Dentistry, Chosun University, Gwangju 61452, Republic of Korea
- Tyros Biotechnology Inc., 75 Kneeland St. 14 Floors, Boston, MA 02111, USA
| |
Collapse
|
2
|
Subba SH, Park SY. In Situ Cancer-Cell-Triggered Visible Changes in Mechanical Properties, Electroconductivity, and Adhesiveness of a MnO 2@PD-Based Mineralized Hydrogel. ACS Appl Mater Interfaces 2023; 15:38357-38366. [PMID: 37548176 DOI: 10.1021/acsami.3c08501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/08/2023]
Abstract
Herein, a cancer-specific dopamine-conjugated sp2-rich carbonized polymer dot (PD)-encapsulated mesoporous MnO2 (MnO2@PD)-mineralized hydrogel biosensor was developed that offers cancer-induced observable in situ alterations in fluorescence (FL), electrochemical, and mechanophysical properties. Cancer-triggered MnO2 degradation in the hydrogel, prompted by increased levels of glutathione (GSH) and reactive oxygen species (ROS) such as H2O2, leads to PD release and FL restoration, thereby controlling changes in the pore structure and increasing hydrogen bonding, resulting in physiologically visible alterations in mechanical stretchability, viscosity, swelling behavior, and adhesiveness. The pore size of the matrix increased from 21.83 to 36.81 m2/g upon GSH treatment, affecting the viscosity and swellability of the system. The resistance increased from 21.96 ± 1.16 to 30.69 ± 2.01 and 32.21 ± 2.54 kΩ, respectively, confirming the dependence of conductivity changes on H2O2 and GSH treatments. The in vitro treatment with cancer cells (HeLa, PC-3, and B16F10) facilitated a tunable electrochemical sensing performance via redox-mediated MnO2 breakdown by intracellular ROS and GSH, whereas hydrogels treated with normal cells (CHO-K1) showed minimal changes. Cancer-microenvironment-derived water-drop sensing showed three times higher response as compared to the normal cell-treated hydrogel. The sensing capability of the fabricated sensor was validated based on bending-induced relative resistance changes under dry and wet conditions. Moreover, the integration of the developed sensor with a wireless sensor enabled real-time monitoring with a smartphone.
Collapse
Affiliation(s)
- Sunu Hangma Subba
- Department of IT and Energy Convergence (BK21 FOUR), Korea National University of Transportation, Chungju 27469, Republic of Korea
| | - Sung Young Park
- Department of IT and Energy Convergence (BK21 FOUR), Korea National University of Transportation, Chungju 27469, Republic of Korea
- Department of Chemical and Biological Engineering, Korea National University of Transportation, Chungju 27469, Republic of Korea
| |
Collapse
|
3
|
Gautam S, Marwaha D, Singh N, Rai N, Sharma M, Tiwari P, Urandur S, Shukla RP, Banala VT, Mishra PR. Self-Assembled Redox-Sensitive Polymeric Nanostructures Facilitate the Intracellular Delivery of Paclitaxel for Improved Breast Cancer Therapy. Mol Pharm 2023; 20:1914-1932. [PMID: 36848489 DOI: 10.1021/acs.molpharmaceut.2c00673] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/01/2023]
Abstract
A two-tier approach has been proposed for targeted and synergistic combination therapy against metastatic breast cancer. First, it comprises the development of a paclitaxel (PX)-loaded redox-sensitive self-assembled micellar system using betulinic acid-disulfide-d-α-tocopheryl poly(ethylene glycol) succinate (BA-Cys-T) through carbonyl diimidazole (CDI) coupling chemistry. Second, hyaluronic acid is anchored to TPGS (HA-Cys-T) chemically through a cystamine spacer to achieve CD44 receptor-mediated targeting. We have established that there is significant synergy between PX and BA with a combination index of 0.27 at a molar ratio of 1:5. An integrated system comprising both BA-Cys-T and HA-Cys-T (PX/BA-Cys-T-HA) exhibited significantly higher uptake than PX/BA-Cys-T, indicating preferential CD44-mediated uptake along with the rapid release of drugs in response to higher glutathione concentrations. Significantly higher apoptosis (42.89%) was observed with PX/BA-Cys-T-HA than those with BA-Cys-T (12.78%) and PX/BA-Cys-T (33.38%). In addition, PX/BA-Cys-T-HA showed remarkable enhancement in the cell cycle arrest, improved depolarization of the mitochondrial membrane potential, and induced excessive generation of ROS when tested in the MDA-MB-231 cell line. An in vivo administration of targeted micelles showed improved pharmacokinetic parameters and significant tumor growth inhibition in 4T1-induced tumor-bearing BALB/c mice. Overall, the study indicates a potential role of PX/BA-Cys-T-HA in achieving both temporal and spatial targeting against metastatic breast cancer.
Collapse
Affiliation(s)
- Shalini Gautam
- Division of Pharmaceutics and Pharmacokinetics, CSIR-Central Drug Research Institute, Preclinical South PCS 002/011, B.S. 10/1, Sector-10, Jankipuram Extension, Sitapur Road, Lucknow 226031, UP, India.,Academy of Scientific and Innovation Research (AcSIR), Ghaziabad 201002, UP, India
| | - Disha Marwaha
- Division of Pharmaceutics and Pharmacokinetics, CSIR-Central Drug Research Institute, Preclinical South PCS 002/011, B.S. 10/1, Sector-10, Jankipuram Extension, Sitapur Road, Lucknow 226031, UP, India
| | - Neha Singh
- Division of Pharmaceutics and Pharmacokinetics, CSIR-Central Drug Research Institute, Preclinical South PCS 002/011, B.S. 10/1, Sector-10, Jankipuram Extension, Sitapur Road, Lucknow 226031, UP, India
| | - Nikhil Rai
- Division of Pharmaceutics and Pharmacokinetics, CSIR-Central Drug Research Institute, Preclinical South PCS 002/011, B.S. 10/1, Sector-10, Jankipuram Extension, Sitapur Road, Lucknow 226031, UP, India
| | - Madhu Sharma
- Division of Pharmaceutics and Pharmacokinetics, CSIR-Central Drug Research Institute, Preclinical South PCS 002/011, B.S. 10/1, Sector-10, Jankipuram Extension, Sitapur Road, Lucknow 226031, UP, India
| | - Pratiksha Tiwari
- Division of Pharmaceutics and Pharmacokinetics, CSIR-Central Drug Research Institute, Preclinical South PCS 002/011, B.S. 10/1, Sector-10, Jankipuram Extension, Sitapur Road, Lucknow 226031, UP, India
| | - Sandeep Urandur
- Division of Pharmaceutics and Pharmacokinetics, CSIR-Central Drug Research Institute, Preclinical South PCS 002/011, B.S. 10/1, Sector-10, Jankipuram Extension, Sitapur Road, Lucknow 226031, UP, India
| | - Ravi Prakash Shukla
- Division of Pharmaceutics and Pharmacokinetics, CSIR-Central Drug Research Institute, Preclinical South PCS 002/011, B.S. 10/1, Sector-10, Jankipuram Extension, Sitapur Road, Lucknow 226031, UP, India
| | - Venkatesh Teja Banala
- Division of Pharmaceutics and Pharmacokinetics, CSIR-Central Drug Research Institute, Preclinical South PCS 002/011, B.S. 10/1, Sector-10, Jankipuram Extension, Sitapur Road, Lucknow 226031, UP, India
| | - Prabhat Ranjan Mishra
- Division of Pharmaceutics and Pharmacokinetics, CSIR-Central Drug Research Institute, Preclinical South PCS 002/011, B.S. 10/1, Sector-10, Jankipuram Extension, Sitapur Road, Lucknow 226031, UP, India.,Academy of Scientific and Innovation Research (AcSIR), Ghaziabad 201002, UP, India
| |
Collapse
|
4
|
Shi Y, Li C, Yang M, Pan X, Hu J. Docetaxel-loaded redox-sensitive nanoparticles self-assembling from poly(caprolactone) conjugates with disulfide-linked poly(ethylene glycol). J Biomater Sci Polym Ed 2022; 33:2185-2201. [PMID: 35796690 DOI: 10.1080/09205063.2022.2099664] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
In this study, novel redox-sensitive nanoparticles (NPs) were fabricated from the poly(caprolactone) conjugates with disulfide-linked poly(ethylene glycol) (DDMAT- mPEG-S-S-PCL, DPSP). The DPSP polymer was synthesized by ring-opening polymerization (ROP) and reversible addition-fragmentation chain transfer (RAFT) polymerization. The obtaining of the DPSP polymer was confirmed by the 1H nuclear magnetic resonance (1H NMR) and Fourier transform infrared spectroscopy (FTIR) spectra. The DPSP NPs were fabricated with the solvent-evaporation method. Docetaxel (DTX) was employed as a model drug and encapsulated into the DPSP NPs. The in vitro anti-tumor activity of the DTX-loaded DPSP NPs and free DTX against the breast cancer cells (4T1) were evaluated by MTT assay. The cargo-free DPSP NPs were in circular shapes with an average diameter of 107.8 ± 0.4 nm. These NPs displayed redox-responsive behavior in the presence of glutathione. Animal experiments indicated that the DPSP NPs showed excellent blood compatibility and good bio-security. Cell tests suggested that the DPSP NPs could be taken in by 4T1 cells, smoothly, which improved the anti-tumor activity of free DTX.
Collapse
Affiliation(s)
- Yongli Shi
- College of Pharmacy, Xinxiang Medical University, Xinxiang, P.R. China
| | - Chunyan Li
- Sanquan College, Xinxiang Medical University, Xinxiang, P.R. China
| | - Mingbo Yang
- College of Pharmacy, Xinxiang Medical University, Xinxiang, P.R. China
| | - Xiaofei Pan
- College of Pharmacy, Xinxiang Medical University, Xinxiang, P.R. China
| | - Jie Hu
- College of Pharmacy, Xinxiang Medical University, Xinxiang, P.R. China
| |
Collapse
|
5
|
Zhao W, Li Z, Liang N, Liu J, Yan P, Sun S. AIE-Featured Redox-Sensitive Micelles for Bioimaging and Efficient Anticancer Drug Delivery. Int J Mol Sci 2022; 23:10801. [PMID: 36142713 DOI: 10.3390/ijms231810801] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 09/07/2022] [Accepted: 09/13/2022] [Indexed: 11/24/2022] Open
Abstract
In the present study, an amphiphilic polymer was prepared by conjugating methoxy poly(ethylene glycol) (mPEG) with tetraphenylethene (TPE) via disulfide bonds (Bi(mPEG-S-S)-TPE). The polymer could self-assemble into micelles and solubilize hydrophobic anticancer drugs such as paclitaxel (PTX) in the core. Combining the effect of TPE, mPEG, and disulfide bonds, the Bi(mPEG-S-S)-TPE micelles exhibited excellent AIE feature, reduced protein adsorption, and redox-sensitive drug release behavior. An in vitro intracellular uptake study demonstrated the great imaging ability and efficient internalization of Bi(mPEG-S-S)-TPE micelles. The excellent anticancer effect and low systemic toxicity were further evidenced by the in vivo anticancer experiment. The Bi(mPEG-S-S)-TPE micelles were promising drug carriers for chemotherapy and bioimaging.
Collapse
|
6
|
Galy PE, Guitton-Spassky T, Sella C, Thouin L, Vitale MR, Baigl D. Redox Control of Particle Deposition from Drying Drops. ACS Appl Mater Interfaces 2022; 14:3374-3384. [PMID: 34994535 DOI: 10.1021/acsami.1c18933] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The coffee-ring effect (CRE), which denotes the accumulation of nonvolatile compounds at the periphery of a pinned sessile drying drop, is a universal and ubiquitous yet complex phenomenon. It is crucial to better understand and control it, either to avoid its various deleterious consequences in many processes requiring homogeneous deposition or to exploit it for applications ranging from controlled particle patterning to low cost diagnostics. Here, we report for the first time the use of a reduction-oxidation (redox) stimulus to cancel the CRE or harness it, leading to a robust and tunable control of particle deposition in drying sessile drops. This is achieved by implementing redox-sensitive ferrocenyl cationic surfactants of different chain lengths in drying drops containing anionic colloids. Varying surfactant hydrophobicity, concentration, and redox state allows us not only to control the overall distribution of deposited particles, including the possibility to fully cancel the CRE, but also to modify the microscopic organization of particles inside the deposit. Notably, with all other parameters being fixed, this method allows the adjustment of the deposited particle patterns, from polycrystalline rings to uniform disks, as a function of the oxidation rate. We show that the redox control can be achieved either chemically by the addition of oxidants or electrochemically by applying a potential for additive-free and reversible actuation in a closed system. This correlation between the redox state and the particle pattern opens a perspective for both redox-programmable particle patterning and original diagnostic applications based on the visual determination of a redox state. It also contributes to clarify the role of surfactant charge and its amphiphilic character in directing particle deposition from drying suspensions.
Collapse
Affiliation(s)
- Pauline E Galy
- PASTEUR, Department of Chemistry, École Normale Supérieure, PSL University, Sorbonne Université, CNRS, 75005 Paris, France
| | - Tiffany Guitton-Spassky
- PASTEUR, Department of Chemistry, École Normale Supérieure, PSL University, Sorbonne Université, CNRS, 75005 Paris, France
| | - Catherine Sella
- PASTEUR, Department of Chemistry, École Normale Supérieure, PSL University, Sorbonne Université, CNRS, 75005 Paris, France
| | - Laurent Thouin
- PASTEUR, Department of Chemistry, École Normale Supérieure, PSL University, Sorbonne Université, CNRS, 75005 Paris, France
| | - Maxime R Vitale
- UMR 7203, Department of Chemistry, Ecole Normale Supérieure, PSL University, Sorbonne Université, CNRS, 75005 Paris, France
| | - Damien Baigl
- PASTEUR, Department of Chemistry, École Normale Supérieure, PSL University, Sorbonne Université, CNRS, 75005 Paris, France
| |
Collapse
|
7
|
Tamburrini KC, Terrapon N, Lombard V, Bissaro B, Longhi S, Berrin JG. Bioinformatic Analysis of Lytic Polysaccharide Monooxygenases Reveals the Pan-Families Occurrence of Intrinsically Disordered C-Terminal Extensions. Biomolecules 2021; 11:1632. [PMID: 34827630 PMCID: PMC8615602 DOI: 10.3390/biom11111632] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 10/26/2021] [Accepted: 10/30/2021] [Indexed: 01/17/2023] Open
Abstract
Lytic polysaccharide monooxygenases (LPMOs) are monocopper enzymes secreted by many organisms and viruses. LPMOs catalyze the oxidative cleavage of different types of polysaccharides and are today divided into eight families (AA9-11, AA13-17) within the Auxiliary Activity enzyme class of the CAZy database. LPMOs minimal architecture encompasses a catalytic domain, to which can be appended a carbohydrate-binding module. Intriguingly, we observed that some LPMO sequences also display a C-terminal extension of varying length not associated with any known function or fold. Here, we analyzed 27,060 sequences from different LPMO families and show that 60% have a C-terminal extension predicted to be intrinsically disordered. Our analysis shows that these disordered C-terminal regions (dCTRs) are widespread in all LPMO families (except AA13) and differ in terms of sequence length and amino-acid composition. Noteworthily, these dCTRs have so far only been observed in LPMOs. LPMO-dCTRs share a common polyampholytic nature and an enrichment in serine and threonine residues, suggesting that they undergo post-translational modifications. Interestingly, dCTRs from AA11 and AA15 are enriched in redox-sensitive, conditionally disordered regions. The widespread occurrence of dCTRs in LPMOs from evolutionarily very divergent organisms, hints at a possible functional role and opens new prospects in the field of LPMOs.
Collapse
Affiliation(s)
- Ketty C. Tamburrini
- Architecture et Fonction des Macromolécules Biologiques (AFMB), Centre National de la Recherche Scientifique (CNRS), Aix-Marseille Université (AMU), UMR 7257, 13288 Marseille, France; (K.C.T.); (N.T.); (V.L.)
- Biodiversité et Biotechnologie Fongiques (BBF), French National Institute for Agriculture, Food, and Environment (INRAE), Aix-Marseille Université (AMU), UMR 1163, 13288 Marseille, France;
| | - Nicolas Terrapon
- Architecture et Fonction des Macromolécules Biologiques (AFMB), Centre National de la Recherche Scientifique (CNRS), Aix-Marseille Université (AMU), UMR 7257, 13288 Marseille, France; (K.C.T.); (N.T.); (V.L.)
- Architecture et Fonction des Macromolécules Biologiques (AFMB), French National Institute for Agriculture, Food, and Environment (INRAE), USC 1408, 13288 Marseille, France
| | - Vincent Lombard
- Architecture et Fonction des Macromolécules Biologiques (AFMB), Centre National de la Recherche Scientifique (CNRS), Aix-Marseille Université (AMU), UMR 7257, 13288 Marseille, France; (K.C.T.); (N.T.); (V.L.)
- Architecture et Fonction des Macromolécules Biologiques (AFMB), French National Institute for Agriculture, Food, and Environment (INRAE), USC 1408, 13288 Marseille, France
| | - Bastien Bissaro
- Biodiversité et Biotechnologie Fongiques (BBF), French National Institute for Agriculture, Food, and Environment (INRAE), Aix-Marseille Université (AMU), UMR 1163, 13288 Marseille, France;
| | - Sonia Longhi
- Architecture et Fonction des Macromolécules Biologiques (AFMB), Centre National de la Recherche Scientifique (CNRS), Aix-Marseille Université (AMU), UMR 7257, 13288 Marseille, France; (K.C.T.); (N.T.); (V.L.)
| | - Jean-Guy Berrin
- Biodiversité et Biotechnologie Fongiques (BBF), French National Institute for Agriculture, Food, and Environment (INRAE), Aix-Marseille Université (AMU), UMR 1163, 13288 Marseille, France;
| |
Collapse
|
8
|
Abstract
Responsive polymeric hydrogels have found wide application in the clinic as injectable, biocompatible, and biodegradable materials capable of controlled release of therapeutics. In this article, we introduce a thermoresponsive polymer hydrogel bearing covalent disulfide bonds. The cold aqueous polymer solution forms a hydrogel upon heating to physiological temperatures and undergoes slow degradation by hydrolytic cleavage of ester bonds. The disulfide functionality allows for immediate reductive cleavage of the redox-sensitive bond embedded within the polymer structure, affording the option of instantaneous hydrogel collapse. Poly(ethylene glycol)-b-poly(lactic acid)-S-S-poly(lactic acid)-b-poly(ethylene glycol) (PEG-PLA-SS-PLA-PEG) copolymer was synthesized by grafting PEG to PLA-SS-PLA via urethane linkages. The aqueous solution of the resultant copolymer was a free-flowing solution at ambient temperatures and formed a hydrogel above 32 °C. The immediate collapsibility of the hydrogel was displayed via reaction with NaBH4 as a relatively strong reducing agent, yet stability was displayed even in glutathione solution, in which the polymer degraded slowly by hydrolytic degradation. The polymeric hydrogel is capable of either long-term or immediate degradation and thus represents an attractive candidate as a biocompatible material for the controlled release of drugs.
Collapse
Affiliation(s)
| | - Abraham J. Domb
- The Alex Grass Center for Drug Design and Synthesis and Center for Cannabis Research, Faculty of Medicine, Institute of Drug Research, School of Pharmacy, The Hebrew University of Jerusalem, Jerusalem 91120, Israel;
| |
Collapse
|
9
|
Wu B, Zhang LJ, Zhang CJ, Deng K, Ao YW, Mei H, Zhou W, Wang CX, Yu H, Huang SW. Effect of Poly(ethylene glycol) (PEG) Surface Density on the Fate and Antitumor Efficacy of Redox-Sensitive Hybrid Nanoparticles. ACS Biomater Sci Eng 2020; 6:3975-3983. [PMID: 33463329 DOI: 10.1021/acsbiomaterials.0c00516] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The effects of poly(ethylene glycol) (PEG) on improving the biological compatibility and circulation time of nanocarriers are determined by the surface density of PEG on nanoparticles. PEG with high surface density on nanocarriers has greater accumulation in tumor tissues. However, this impairs the release of drugs loaded in the nanoparticles in the tumor tissues. The relations and internal regularities between the controlled stripping of PEG of nanoparticles and its fate and antitumor efficacy in vivo remain unsolved. Redox-sensitive hybrid nanoparticles coated with varied PEG densities were prepared by blending a redox-sensitive polymer of DLPE-SS-MPEG. To keep identical nanoproperties, these nanoparticles were prepared with a similar size distribution of around 100 nm. The effects of controlled stripping of PEG on antitumor activities of nanoparticles were then investigated. As the PEG surface density increased, lower cellular internalization by tumor cells was observed. However, nanoparticles with higher controlled stripping of PEG showed greater accumulation in tumor tissues and advanced antitumor activities in vivo.
Collapse
Affiliation(s)
- Bo Wu
- Department of Radiology, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan 430071, P. R. China.,Key Laboratory of Biomedical Polymers, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Liu-Jie Zhang
- Key Laboratory of Biomedical Polymers, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Cai-Ju Zhang
- Department of Radiology, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan 430071, P. R. China
| | - Kai Deng
- Key Laboratory of Biomedical Polymers, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Ya-Wen Ao
- Department of Radiology, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan 430071, P. R. China
| | - Hao Mei
- Department of Radiology, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan 430071, P. R. China
| | - Wei Zhou
- Key Laboratory of Biomedical Polymers, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Cai-Xia Wang
- Key Laboratory of Biomedical Polymers, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Hui Yu
- Key Laboratory of Biomedical Polymers, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Shi-Wen Huang
- Key Laboratory of Biomedical Polymers, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| |
Collapse
|
10
|
Ng YM, Mat Yusuf SNA, Chiu HI, Lim V. Redox-Sensitive Linear and Cross-Linked Cystamine-Based Polymers for Colon-Targeted Drug Delivery: Design, Synthesis, and Characterisation. Pharmaceutics 2020; 12:pharmaceutics12050461. [PMID: 32443633 PMCID: PMC7284438 DOI: 10.3390/pharmaceutics12050461] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 04/22/2020] [Accepted: 04/23/2020] [Indexed: 12/14/2022] Open
Abstract
Cystamine-based polymers may help to achieve controlled and targeted drug delivery to the colon due to their susceptibility to breakage of the disulfide linkage in the low redox potential environment of the colon. In this study, two linear cystamine-based polymers with similar repeating units (LP1 and LP2) and a cross-linked cystamine-based polymer (BP) were synthesised and their kinetics and the various physical conditions underlying cystamine-based polymerisation were evaluated. In brief, N1,N6-bis(2-(tritylthio)ethyl)adipamide (2) was synthesised from the reaction of triphenylmethanol and cysteamine. Next, the trityl group of 2 was removed with trifluoroacetic acid and triethylsilane before proceeding to oxidative polymerisation of the end product, N1,N6-bis(2-mercaptoethyl)adipamide (3) to LP1. The Schotten-Bauman reaction was applied to synthesise LP2 and BP from the reaction of cystamine with adipoyl chloride or trimesoyl chloride. Scanning electron microscopy, energy-dispersive X-ray spectroscopy, and mapping showed that oxygen, nitrogen, sulfur, and carbon were homogenously distributed in the polymers, with LP2 and BP having less porous morphologies compared to LP1. Results of zinc-acetic acid reduction showed that all polymers began to reduce after 15 min. Moreover, all synthesised polymers resisted stomach and small intestine conditions and only degraded in the presence of bacteria in the colon environment. Thus, these polymers have great potential for drug delivery applications. LP2 and BP, which were synthesised using the Schotten-Bauman reaction, were more promising than LP1 for colon-targeted drug delivery.
Collapse
Affiliation(s)
- Yoke Mooi Ng
- Integrative Medicine Cluster, Advanced Medical and Dental Institute, Universiti Sains Malaysia, Bertam, Kepala Batas 13200, Penang, Malaysia; (Y.M.N.); (S.N.A.M.Y.); (H.I.C.)
| | - Siti Nur Aishah Mat Yusuf
- Integrative Medicine Cluster, Advanced Medical and Dental Institute, Universiti Sains Malaysia, Bertam, Kepala Batas 13200, Penang, Malaysia; (Y.M.N.); (S.N.A.M.Y.); (H.I.C.)
- Department of Chemical Engineering Technology, Faculty of Engineering Technology, UniCITI Alam Campus, Universiti Malaysia Perlis, Padang Besar 02100, Perlis, Malaysia
| | - Hock Ing Chiu
- Integrative Medicine Cluster, Advanced Medical and Dental Institute, Universiti Sains Malaysia, Bertam, Kepala Batas 13200, Penang, Malaysia; (Y.M.N.); (S.N.A.M.Y.); (H.I.C.)
| | - Vuanghao Lim
- Integrative Medicine Cluster, Advanced Medical and Dental Institute, Universiti Sains Malaysia, Bertam, Kepala Batas 13200, Penang, Malaysia; (Y.M.N.); (S.N.A.M.Y.); (H.I.C.)
- Correspondence: ; Tel.: +604-5622427
| |
Collapse
|
11
|
Yang Y, Li Y, Chen K, Zhang L, Qiao S, Tan G, Chen F, Pan W. Dual Receptor-Targeted and Redox-Sensitive Polymeric Micelles Self-Assembled from a Folic Acid-Hyaluronic Acid-SS-Vitamin E Succinate Polymer for Precise Cancer Therapy. Int J Nanomedicine 2020; 15:2885-2902. [PMID: 32425522 PMCID: PMC7188338 DOI: 10.2147/ijn.s249205] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Accepted: 04/08/2020] [Indexed: 12/14/2022] Open
Abstract
Purpose Poor site-specific delivery and insufficient intracellular drug release in tumors are inherent disadvantages to successful chemotherapy. In this study, an extraordinary polymeric micelle nanoplatform was designed for the efficient delivery of paclitaxel (PTX) by combining dual receptor-mediated active targeting and stimuli response to intracellular reduction potential. Methods The dual-targeted redox-sensitive polymer, folic acid-hyaluronic acid-SS-vitamin E succinate (FHSV), was synthesized via an amidation reaction and characterized by 1H-NMR. Then, PTX-loaded FHSV micelles (PTX/FHSV) were prepared by a dialysis method. The physiochemical properties of the micelles were explored. Moreover, in vitro cytological experiments and in vivo animal studies were carried out to evaluate the antitumor efficacy of polymeric micelles. Results The PTX/FHSV micelles exhibited a uniform, near-spherical morphology (148.8 ± 1.4 nm) and a high drug loading capacity (11.28% ± 0.25). Triggered by the high concentration of glutathione, PTX/FHSV micelles could quickly release their loaded drug into the release medium. The in vitro cytological evaluations showed that, compared with Taxol or single receptor-targeted micelles, FHSV micelles yielded higher cellular uptake by the dual receptor-mediated endocytosis pathway, thus leading to significantly superior cytotoxicity and apoptosis in tumor cells but less cytotoxicity in normal cells. More importantly, in the in vivo antitumor experiments, PTX/FHSV micelles exhibited enhanced tumor accumulation and produced remarkable tumor growth inhibition with minimal systemic toxicity. Conclusion Our results suggest that this well-designed FHSV polymer has promising potential for use as a vehicle of chemotherapeutic drugs for precise cancer therapy.
Collapse
Affiliation(s)
- Yue Yang
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, People's Republic of China
| | - Yunjian Li
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, People's Republic of China
| | - Kai Chen
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, People's Republic of China
| | - Ling Zhang
- Department of Biotherapy, Cancer Research Institute, The First Affiliated Hospital of China Medical University, Shenyang 110001, People's Republic of China
| | - Sen Qiao
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, People's Republic of China
| | - Guoxin Tan
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, People's Republic of China
| | - Fen Chen
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, People's Republic of China.,Key Laboratory of Ministry of Education for TCM Viscera-State Theory and Applications, Liaoning University of Traditional Chinese Medicine, Shenyang 110847, People's Republic of China.,Zhejiang Jingxin Pharmaceutical Co., Ltd, Zhejiang 312500, People's Republic of China
| | - Weisan Pan
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, People's Republic of China
| |
Collapse
|
12
|
Liang Y, Zhang J, Tian B, Wu Z, Svirskis D, Han J. A NAG-Guided Nano-Delivery System for Redox- and pH-Triggered Intracellularly Sequential Drug Release in Cancer Cells. Int J Nanomedicine 2020; 15:841-855. [PMID: 32103941 PMCID: PMC7008180 DOI: 10.2147/ijn.s226249] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Accepted: 12/10/2019] [Indexed: 12/12/2022] Open
Abstract
Aim Sequential treatment with paclitaxel (PTXL) and gemcitabine (GEM) is considered clinically beneficial for non-small-cell lung cancer. This study aimed to investigate the effectiveness of a nano-system capable of sequential release of PTXL and GEM within cancer cells. Methods PTXL-ss-poly(6-O-methacryloyl-d-galactopyranose)-GEM (PTXL-ss-PMAGP-GEM) was designed by conjugating PMAGP with PTXL via disulfide bonds (-ss-), while GEM via succinic anhydride (PTXL:GEM=1:3). An amphiphilic block copolymer N-acetyl-d-glucosamine(NAG)-poly(styrene-alt-maleic anhydride)58-b-polystyrene130 acted as a targeting moiety and emulsifier in formation of nanostructures (NLCs). Results The PTXL-ss-PMAGP-GEM/NAG NLCs (119.6 nm) provided a sequential in vitro release of, first PTXL (redox-triggered), then GEM (pH-triggered). The redox- and pH-sensitive NLCs readily distributed homogenously in the cytoplasm. NAG augmented the uptake of NLCs by the cancer cells and tumor accumulation. PTXL-ss-PMAGP-GEM/NAG NLCs exhibited synergistic cytotoxicity in vitro and strongest antitumor effects in tumor-bearing mice compared to NLCs lacking pH/redox sensitivities or free drug combination. Conclusion This study demonstrated the abilities of PTXL-ss-PMAGP-GEM/NAG NLCs to achieve synergistic antitumor effect by targeted intracellularly sequential drug release.
Collapse
Affiliation(s)
- Yan Liang
- School of Pharmacy, Binzhou Medical University, Yantai 264003, Shandong Province, People's Republic of China
| | - Jing Zhang
- School of Pharmacy, Binzhou Medical University, Yantai 264003, Shandong Province, People's Republic of China
| | - Baocheng Tian
- School of Pharmacy, Binzhou Medical University, Yantai 264003, Shandong Province, People's Republic of China
| | - Zimei Wu
- School of Pharmacy, Faculty of Medical and Health Sciences, The University of Auckland, Auckland 1023, New Zealand
| | - Darren Svirskis
- School of Pharmacy, Faculty of Medical and Health Sciences, The University of Auckland, Auckland 1023, New Zealand
| | - Jingtian Han
- School of Pharmacy, Binzhou Medical University, Yantai 264003, Shandong Province, People's Republic of China
| |
Collapse
|
13
|
Men W, Zhu P, Dong S, Liu W, Zhou K, Bai Y, Liu X, Gong S, Zhang CY, Zhang S. Fabrication Of Dual pH/redox-Responsive Lipid-Polymer Hybrid Nanoparticles For Anticancer Drug Delivery And Controlled Release. Int J Nanomedicine 2019; 14:8001-8011. [PMID: 31632014 PMCID: PMC6788345 DOI: 10.2147/ijn.s226798] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2019] [Accepted: 09/17/2019] [Indexed: 01/10/2023] Open
Abstract
BACKGROUND The development of biocompatible nanocarriers that can efficiently encapsulate and deliver anticancer drug to the tumor site and provide controlled release of cargos in response to the specific cues for cancer therapy is of great significance. METHODS In this work, dual pH/redox-responsive fabrication of hybrid lipid-polymer nanoparticles (LPNPs) self-assembled from amphiphilic polymer poly(ethylene glycol) methyl ether-grafted disulfide-poly(β-amino esters) (PBAE-ss-mPEG) and PEGylated lipid were prepared and used as drug delivery carriers. The optimization of PEGylated lipid modification was confirmed by analysis of particle size, polydispersity index (PDI), cellular uptake, serum stability, and drug loading capacity. The pK b value of LPNPs was determined as 6.55, indicating the pH-sensitivity. The critical micelle concentration (CMC) values and zeta-potential of LPNPs at different pH values were investigated to confirm its pH-sensitivity. The morphology of LPNPs before and after incubation with reducing agent was imaged to study the redox-responsibility. RESULTS The in vitro results showed that the drug had controlled release from LPNPs triggered by low pH and high concentration of reducing agent. Furthermore, the cytotoxicity of LPNPs was very low, and the doxorubicin (DOX)-loaded LPNPs could efficiently induce the death of tumor cells in comparison to free DOX. CONCLUSION All results demonstrated that the fabricated LPNPs could be potential anticancer drug delivery carriers with a pH/redox-triggered drug release profile, and PEGylated lipid modification might be a useful method to fabricate the drug delivery platform.
Collapse
Affiliation(s)
- Wanfu Men
- Department of Thoracic Surgery, The First Affiliated Hospital of China Medical University, Shenyang110001, People’s Republic of China
| | - Peiyao Zhu
- Department of Thoracic Surgery, The First Affiliated Hospital of China Medical University, Shenyang110001, People’s Republic of China
| | - Siyuan Dong
- Department of Thoracic Surgery, The First Affiliated Hospital of China Medical University, Shenyang110001, People’s Republic of China
| | - Wenke Liu
- Department of Thoracic Surgery, The First Affiliated Hospital of China Medical University, Shenyang110001, People’s Republic of China
| | - Kun Zhou
- Department of Thoracic Surgery, The First Affiliated Hospital of China Medical University, Shenyang110001, People’s Republic of China
| | - Yu Bai
- Department of Thoracic Surgery, The First Affiliated Hospital of China Medical University, Shenyang110001, People’s Republic of China
| | - Xiangli Liu
- Department of Thoracic Surgery, The First Affiliated Hospital of China Medical University, Shenyang110001, People’s Republic of China
| | - Shulei Gong
- Department of Thoracic Surgery, The First Affiliated Hospital of China Medical University, Shenyang110001, People’s Republic of China
| | - Can Yang Zhang
- Department of Pharmaceutical Sciences, College of Pharmacy and Pharmaceutical Sciences, Washington State University, Spokane, WA99210, USA
| | - Shuguang Zhang
- Department of Thoracic Surgery, The First Affiliated Hospital of China Medical University, Shenyang110001, People’s Republic of China
| |
Collapse
|
14
|
Xu W, Wang H, Dong L, Zhang P, Mu Y, Cui X, Zhou J, Huo M, Yin T. Hyaluronic acid-decorated redox-sensitive chitosan micelles for tumor-specific intracellular delivery of gambogic acid. Int J Nanomedicine 2019; 14:4649-4666. [PMID: 31303753 PMCID: PMC6603291 DOI: 10.2147/ijn.s201110] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Accepted: 04/25/2019] [Indexed: 12/19/2022] Open
Abstract
Introduction: Herein, a hyaluronic acid (HA)-coated redox-sensitive chitosan-based nanoparticle, HA(HECS-ss-OA)/GA, was successfully developed for tumor-specific intracellular rapid delivery of gambogic acid (GA). Materials and methods: The redox-sensitive polymer, HECS-ss-OA, was prepared through a well-controlled synthesis procedure with a satisfactory reproducibility and stable resulted surface properties of the assembled cationic micelles. GA was solubilized into the inner core of HECS-ss-OA micelles, while HA was employed to coat outside HECS-ss-OA/GA for CD44-mediated active targeting along with protection from cation-associated in vivo defects. The desirable redox-sensitivity of HA(HECS-ss-OA)/GA was demonstrated by morphology and particle size changes alongside in vitro drug release of nanoparticles in different simulated reducing environments. Results: The results of flow cytometry and confocal microscopy confirmed the HA-receptor mediated cellular uptake and burst drug release in highly reducing cytosol of HA(HECS-ss-OA)/GA. Consequently, HA(HECS-ss-OA)/GA showed the highest apoptosis induction and cytotoxicity over the non-sensitive (HA(HECS-cc-OA)/GA) and HA un-coated (HECS-ss-OA/GA) controls against A549 NSCLC model both in vitro and in vivo. Furthermore, a diminished systemic cytotoxicity was observed in HA(HECS-ss-OA)/GA treated mice compared with those treated by HA un-coated cationic ones and GA solution.
Collapse
Affiliation(s)
- Wei Xu
- Department of Pharmacy, Shandong Provincial Qian Foshan Hospital, Shandong University, Jinan 250014, People's Republic of China.,Qianfoshan Hospital, The First Hospital Affiliation with Shandong First Medical University, Jinan 250012, People's Republic of China
| | - Honglan Wang
- State Key Laboratory of Natural Medicines, Department of Pharmaceutics, China Pharmaceutical University, Nanjing 210009, People's Republic of China
| | - Lihui Dong
- State Key Laboratory of Natural Medicines, Department of Pharmaceutics, China Pharmaceutical University, Nanjing 210009, People's Republic of China
| | - Pan Zhang
- State Key Laboratory of Natural Medicines, Department of Pharmaceutics, China Pharmaceutical University, Nanjing 210009, People's Republic of China
| | - Yan Mu
- Qianfoshan Hospital, The First Hospital Affiliation with Shandong First Medical University, Jinan 250012, People's Republic of China
| | - Xueyan Cui
- Qianfoshan Hospital, The First Hospital Affiliation with Shandong First Medical University, Jinan 250012, People's Republic of China
| | - Jianping Zhou
- State Key Laboratory of Natural Medicines, Department of Pharmaceutics, China Pharmaceutical University, Nanjing 210009, People's Republic of China
| | - Meirong Huo
- State Key Laboratory of Natural Medicines, Department of Pharmaceutics, China Pharmaceutical University, Nanjing 210009, People's Republic of China
| | - Tingjie Yin
- State Key Laboratory of Natural Medicines, Department of Pharmaceutics, China Pharmaceutical University, Nanjing 210009, People's Republic of China
| |
Collapse
|
15
|
Ren SZ, Zhu D, Zhu XH, Wang B, Yang YS, Sun WX, Wang XM, Lv PC, Wang ZC, Zhu HL. Nanoscale Metal-Organic-Frameworks Coated by Biodegradable Organosilica for pH and Redox Dual Responsive Drug Release and High-Performance Anticancer Therapy. ACS Appl Mater Interfaces 2019; 11:20678-20688. [PMID: 31081332 DOI: 10.1021/acsami.9b04236] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Responsive nanocarriers with biocompatibility and precise drug releasing capability have emerged as a prospective candidate for anticancer treatment. However, the challenges imposed by the complicated preparation process and limited loading capacities have seriously impeded the development of novel multifunctional drug delivery systems. Here, we developed a novel and dual-responsive nanocarrier based on a nanoscale ZIF-8 core and an organosilica shell containing disulfide bridges in its frameworks through a facile and efficient strategy. The prepared ZIF-8@DOX@organosilica nanoparticles (ZDOS NPs) exhibited a well-defined structure and excellent doxorubicin (DOX) loading capability (41.2%) with pH and redox dual-sensitive release properties. The degradation of the organosilica shell was observed after 12 h incubation with a 10 mM reducing agent. Confocal imaging and flow cytometry analysis further proved that the nanocarriers can efficiently enter cells and complete intracellular DOX release under the low pH and high glutathione concentrations, which resulted in an enhanced cytotoxicity of DOX for cancer cells. Meanwhile, subcellular localization experiments revealed that the ZDOS NPs entered cells mainly by endocytosis and then escaped from lysosomes into the cytosol. Moreover, in vivo assays also demonstrated that the ZDOS NPs exhibited negligible systemic toxicity and significantly enhanced anticancer efficiencies compared with free DOX. In summary, our prepared pH and redox dual-responsive nanocarriers provide a potential platform for controlled release and cancer treatment.
Collapse
|
16
|
Alshememry AK, El-Tokhy SS, Unsworth LD. Using Properties of Tumor Microenvironments for Controlling Local, On-Demand Delivery from Biopolymer-Based Nanocarriers. Curr Pharm Des 2019; 23:5358-5391. [PMID: 28530543 DOI: 10.2174/1381612823666170522100545] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [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: 03/27/2017] [Revised: 05/01/2017] [Accepted: 05/13/2017] [Indexed: 11/22/2022]
Abstract
BACKGROUND The 'tumor microenvironment' comprised of tumor cells, non-malignant stromal tissues, signaling molecules and the extracellular matrix. Tumor microenvironment has unique physical and physiological characteristics including vascular abnormalities, hypoxia, acidic pH, specific enzymes and growth factors upregulation and high reducing potential. It is these endogenous properties of the tumor environment that can be used to trigger the release of cancer therapeutics both locally and as a function of disease state. Biopolymers such as proteins, polypeptides and polysaccharides are actively being designed to be bioresponsive nanocarriers for drug delivery due to their relative biocompatibility, biodegradability and low immunogenicity. OBJECTIVE This review focuses on the use of physicochemical attributes of the endogenous tumor microenvironment to provide the impetus for on-demand release of therapeutics from biopolymer-based nanocarriers that are sensitive to pH, enzymes, redox conditions and combinations thereof. CONCLUSION The development of multifunctional nanocarriers based upon a rational approach for targeting and delivering therapeutics to tumors is an area of active research. Despite the huge amount of work done in this area, especially using pH as a means of eliciting drug release at tumor sites, there is a dearth of work whereby different stages during tumor development are targeted for treatment. Although nanocarriers that are able to react to multiple components of the tumor microenvironment are starting to become common-place, it seems that the ability to release various factors at specific times crucial to therapy has not been studied to a large extent as a means of regaining tissue homeostasis.
Collapse
Affiliation(s)
- Abdullah K Alshememry
- National Institute for Nanotechnology, National Research Council, Edmonton, Alberta, Canada.,Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia.,Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, Alberta, Canada
| | - Suleiman S El-Tokhy
- National Institute for Nanotechnology, National Research Council, Edmonton, Alberta, Canada.,Faculty of Pharmacy, Department of Pharmaceutical Technology, Tanta University, Tanta, Egypt
| | - Larry D Unsworth
- National Institute for Nanotechnology, National Research Council, Edmonton, Alberta, Canada.,Department of Chemical & Materials Engineering, University of Alberta, Edmonton, Alberta, Canada
| |
Collapse
|
17
|
Li M, Guo JW, Wen WQ, Chen JK. Biodegradable Redox-Sensitive Star Polymer Nanomicelles for Enhancing Doxorubicin Delivery. Nanomaterials (Basel) 2019; 9:E547. [PMID: 30987287 PMCID: PMC6523129 DOI: 10.3390/nano9040547] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Revised: 03/30/2019] [Accepted: 04/01/2019] [Indexed: 12/18/2022]
Abstract
A typical amphiphilic star polymer adamantane-[poly(lactic-co-glycolic acid)-bis(2-carboxyethyl) sulfide-poly(ethylene glycol) monomethyl ether)]₄ with a specific hydrophilic/redox-sensitive/hydrophobic structure was designed and synthesized through ring opening and esterification reactions. The self-assembled nanomicelles were used as doxorubicin (DOX) delivery vehicles with suitable critical micelle concentrations (5.0 mg/L). After the drug being loaded, drug-loaded micelles showed good drug-loading efficiency (10.39%), encapsulation efficiency (58.1%), and drug release (up to 60%) under simulated biological environment conditions. In addition, the backbone structure of the biodegradable polymer was easily hydrolyzed by the action of biological enzymes. As expected, cell-based studies showed that the designed polymer micelles possessed good biocompatibility (a survival rate of 85% for NH-3T3 cells). Moreover, the drug (DOX) still maintained good anti-cancer effects after being loaded, which caused 40% of MCF-7 cells to survive. These redox-sensitive micelles showed anti-tumor therapeutic potential.
Collapse
Affiliation(s)
- Meng Li
- School of Chemical Engineering & Light Industry, Guangdong University of Technology, Guangzhou 510006, China.
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, No. 43, Sec. 4, Keelung Road, Taipei 106, Taiwan.
| | - Jian-Wei Guo
- School of Chemical Engineering & Light Industry, Guangdong University of Technology, Guangzhou 510006, China.
| | - Wei-Qiu Wen
- School of Chemical Engineering & Light Industry, Guangdong University of Technology, Guangzhou 510006, China.
| | - Jem-Kun Chen
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, No. 43, Sec. 4, Keelung Road, Taipei 106, Taiwan.
| |
Collapse
|
18
|
Abstract
Hypoxia is one of the marked features of malignant tumors, which is associated with several adaptation changes in the microenvironment of tumor cells. Therefore, targeting tumor hypoxia is a research hotspot for cancer therapy. In this review, we summarize the developing chemotherapeutic drugs for targeting hypoxia, including quinones, nitroaromatic/nitroimidazole, N-oxides, and transition metal complexes. In addition, redox-responsive bonds, such as nitroimidazole groups, azogroups, and disulfide bonds, are frequently used in drug delivery systems for targeting the redox environment of tumors. Both hypoxia-activated prodrugs and redox-responsive drug delivery nanocarriers have significant effects on targeting tumor hypoxia for cancer therapy. Hypoxia-activated prodrugs are commonly used in clinical trials with favorable prospects, while redox-responsive nanocarriers are currently at the experimental stage.
Collapse
Affiliation(s)
- Yun Zeng
- Engineering Research Center of Molecular and Neuro Imaging of the Ministry of Education, School of Life Science and Technology, Xidian University, Xi'an 710071, Shaanxi Province, People's Republic of China, ,
| | - Jingwen Ma
- Department of Pharmaceutical Analysis, China Pharmaceutical University, Nanjing 210009, Jiangsu Province, People's Republic of China
| | - Yonghua Zhan
- Engineering Research Center of Molecular and Neuro Imaging of the Ministry of Education, School of Life Science and Technology, Xidian University, Xi'an 710071, Shaanxi Province, People's Republic of China, ,
| | - Xinyi Xu
- Engineering Research Center of Molecular and Neuro Imaging of the Ministry of Education, School of Life Science and Technology, Xidian University, Xi'an 710071, Shaanxi Province, People's Republic of China, ,
| | - Qi Zeng
- Engineering Research Center of Molecular and Neuro Imaging of the Ministry of Education, School of Life Science and Technology, Xidian University, Xi'an 710071, Shaanxi Province, People's Republic of China, ,
| | - Jimin Liang
- Engineering Research Center of Molecular and Neuro Imaging of the Ministry of Education, School of Life Science and Technology, Xidian University, Xi'an 710071, Shaanxi Province, People's Republic of China, ,
| | - Xueli Chen
- Engineering Research Center of Molecular and Neuro Imaging of the Ministry of Education, School of Life Science and Technology, Xidian University, Xi'an 710071, Shaanxi Province, People's Republic of China, ,
| |
Collapse
|
19
|
Abstract
Recently greater emphasis has been given to combination therapy for generating synergistic effects of treating cancer. Recent studies on thiol-sensitive nanocarriers for the delivery of drug or gene have shown promising results. In this review, we will examine the rationale and advantage in using nanocarriers for the combined delivery of different anticancer drugs and biologics. Here, we also discuss the role of nanocarriers, particularly redox-sensitive polymers in evading or inhibiting the efflux pump in cancer and how they modulate the sensitivity of cancer cells. The review aims to provide a good understanding of the new pattern of cancer treatment and key concerns for designing nanomedicine of synergistic combinations for cancer therapy.
Collapse
|
20
|
Xu B, Xu Y, Su G, Zhu H, Zong L. A multifunctional nanoparticle constructed with a detachable albumin outer shell and a redox-sensitive inner core for efficient siRNA delivery to hepatocellular carcinoma cells. J Drug Target 2018; 26:941-954. [PMID: 29564911 DOI: 10.1080/1061186x.2018.1455840] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Successful delivery of small interfering RNA (siRNA) into the cytoplasm of target cells relies on biocompatible and efficient vectors. In this study, a novel multifunctional core/shell nanoparticle [CS-SS-9R/BSA-c(RGDyK)] was developed to effectively deliver siVEGF to hepatocellular carcinoma cells (Bel-7402 cells). To improve the gene payload and transfection efficiency, a positively charged inner core (CS-SS-9R) was constructed by grafting nona-arginine (9R) onto chitosan (CS) using disulphide bonds. The negatively charged outer shell [BSA-c(RGDyK)] assembled on the surface of the inner core by electrostatic forces that shielded high cationic charges and provided improved targeting. The protein outer shell gradually detached from the inner core in the acidic lysosomal environment, leaving the cationic inner core exposed in order to escape from lysosomes. The nanoparticles were capable of delivering siVEGF into Bel-7402 cells via integrin receptor-mediated endocytosis. Successful lysosomal escape of the inner core and the rapid release of siVEGF into the cytoplasm resulted in a 78.9% decrease in VEGF expression and 81.2% inhibition of tumour cell proliferation. In conclusion, this nanoparticle is responsive to the intracellular environment and accurately delivered siRNA into the cytoplasm, providing a safe and highly efficient gene delivery strategy for cancer therapy.
Collapse
Affiliation(s)
- Bohui Xu
- a School of Pharmacy , China Pharmaceutical University , Nanjing , China.,b School of Pharmacy , Nantong University , Nantong , China
| | - Yan Xu
- b School of Pharmacy , Nantong University , Nantong , China
| | - Gaoxing Su
- b School of Pharmacy , Nantong University , Nantong , China
| | - Hongyan Zhu
- b School of Pharmacy , Nantong University , Nantong , China
| | - Li Zong
- a School of Pharmacy , China Pharmaceutical University , Nanjing , China
| |
Collapse
|
21
|
Song Y, Cai H, Yin T, Huo M, Ma P, Zhou J, Lai W. Paclitaxel-loaded redox-sensitive nanoparticles based on hyaluronic acid-vitamin E succinate conjugates for improved lung cancer treatment. Int J Nanomedicine 2018; 13:1585-1600. [PMID: 29588586 PMCID: PMC5858821 DOI: 10.2147/ijn.s155383] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Background Lung cancer is the primary cause of cancer-related death worldwide. A redox-sensitive nanocarrier system was developed for tumor-targeted drug delivery and sufficient drug release of the chemotherapeutic agent paclitaxel (PTX) for improved lung cancer treatment. Methods The redox-sensitive nanocarrier system constructed from a hyaluronic acid-disulfide-vitamin E succinate (HA-SS-VES, HSV) conjugate was synthesized and PTX was loaded in the delivery system. The physicochemical properties of the HSV nanoparticles were characterized. The redox-sensitivity, tumor-targeting and intracellular drug release capability of the HSV nanoparticles were evaluated. Furthermore, in vitro and in vivo antitumor activity of the PTX-loaded HSV nanoparticles was investigated in a CD44 over-expressed A549 tumor model. Results This HSV conjugate was successfully synthesized and self-assembled to form nanoparticles in aqueous condition with a low critical micelle concentration of 36.3 μg mL−1. Free PTX was successfully entrapped into the HSV nanoparticles with a high drug loading of 33.5% (w/w) and an entrapment efficiency of 90.6%. Moreover, the redox-sensitivity of the HSV nanoparticles was confirmed by particle size change of the nanoparticles along with in vitro release profiles in different reducing environment. In addition, the HA-receptor mediated endocytosis and the potency of redox-sensitivity for intracellular drug delivery were further verified by flow cytometry and confocal laser scanning microscopic analysis. The antitumor activity results showed that compared to redox-insensitive nanoparticles and Taxol®, PTX-loaded redox-sensitive nanoparticles exhibited much greater in vitro cytotoxicity and apoptosis-inducing ability against CD44 over-expressed A549 tumor cells. In vivo, the PTX-loaded HSV nanoparticles possessed much higher antitumor efficacy in an A549 mouse xenograft model and demonstrated improved safety profile. In summary, our PTX-loaded redox-sensitive HSV nanoparticles demonstrated enhanced antitumor efficacy and improved safety of PTX. Conclusion The results of our study indicated the redox-sensitive HSV nanoparticle was a promising nanocarrier for lung cancer therapy.
Collapse
Affiliation(s)
- Yu Song
- Department of Pharmaceutics, China Pharmaceutical University, Nanjing, People's Republic of China.,College of Pharmacy, Fujian University of Traditional Chinese Medicine, Fuzhou, People's Republic of China
| | - Han Cai
- Department of Pharmaceutics, China Pharmaceutical University, Nanjing, People's Republic of China
| | - Tingjie Yin
- Department of Pharmaceutics, China Pharmaceutical University, Nanjing, People's Republic of China
| | - Meirong Huo
- Department of Pharmaceutics, China Pharmaceutical University, Nanjing, People's Republic of China
| | - Ping Ma
- Formulation Development, Tolmar Inc, Fort Collins, CO, USA
| | - Jianping Zhou
- Department of Pharmaceutics, China Pharmaceutical University, Nanjing, People's Republic of China
| | - Wenfang Lai
- College of Pharmacy, Fujian University of Traditional Chinese Medicine, Fuzhou, People's Republic of China
| |
Collapse
|
22
|
Dong X, Zou S, Guo C, Wang K, Zhao F, Fan H, Yin J, Chen D. Multifunctional redox-responsive and CD44 receptor targeting polymer-drug nanomedicine based curcumin and alendronate: synthesis, characterization and in vitro evaluation. Artif Cells Nanomed Biotechnol 2017; 46:168-177. [PMID: 29239219 DOI: 10.1080/21691401.2017.1416390] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
The traditional therapy of cancer has systemic side effects, and many cancers, such as human breast cancer and lung cancer easily metastasize to bones, leading to the formation of secondary tumours. This study was aimed at enhancing the anti-tumour effect of curcumin (CUR) and preventing tumour spread to the bone. A novel multifunctional redox-responsive and CD44 receptor targeting polymer-drug, poly alendronate-hyaluronan-S-S-curcumin copolymer (ALN-oHA-S-S-CUR) based CUR and alendronate (ALN) were synthesized successfully with the disulphide bond linker. The structure of ALN-oHA-S-S-CUR was characterized by 1H-NMR. The nanomedicine had natural anti-tumour drugs (CUR) as the hydrophobic kernel, and targeting CD44 receptor oligosaccharides of hyaluronan (oHA) and other anti-tumour drugs (ALN) as hydrophilic shell, named ALN-oHA-S-S-CUR conjugates, which could self-assemble into micelle-like nano-spheres in water via a dialysis method with hydrodynamic diameters of 179 ± 23 nm. Interestingly, the cur-loaded ALN-oHA-S-S-CUR micelles were stable in PBS but were capable of releasing the drug under the reducing environment. The rate of drug release was proportional to the GSH concentration. The uptake and cytotoxicity of micelles were higher in MDA-MB-231 cells than in MCF-7 cells because of a higher expression of the CD44 receptor in the former cell line. And compared to the cur-loaded oHA-CUR micelles, the cur-loaded ALN-oHA-S-S-CUR micelles had a good cellular uptake in 2D cancer cell and penetrability in 3D cancer cell spheroids. These results indicated the active targeting redox-sensitive micelles were promising as intracellular drug delivery systems for cancer treatment.
Collapse
Affiliation(s)
- Xue Dong
- a Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs , Universities of Shandong, Yantai University , Yantai , PR China
| | - Shaohua Zou
- b Department of Pharmaceutics , Yantai Yuhuangding Hospital, School of Medicine, Qingdao University , Yantai , PR China
| | - Chunjing Guo
- a Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs , Universities of Shandong, Yantai University , Yantai , PR China
| | - Kaili Wang
- a Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs , Universities of Shandong, Yantai University , Yantai , PR China
| | - Feng Zhao
- a Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs , Universities of Shandong, Yantai University , Yantai , PR China
| | - Huaying Fan
- a Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs , Universities of Shandong, Yantai University , Yantai , PR China
| | - Jungang Yin
- a Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs , Universities of Shandong, Yantai University , Yantai , PR China
| | - Daquan Chen
- a Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs , Universities of Shandong, Yantai University , Yantai , PR China
| |
Collapse
|
23
|
Wu B, Lu ST, Deng K, Yu H, Cui C, Zhang Y, Wu M, Zhuo RX, Xu HB, Huang SW. MRI-guided targeting delivery of doxorubicin with reduction-responsive lipid-polymer hybrid nanoparticles. Int J Nanomedicine 2017; 12:6871-6882. [PMID: 29066883 PMCID: PMC5604569 DOI: 10.2147/ijn.s143048] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
In recent years, there has been increasing interest in developing a multifunctional nanoscale platform for cancer monitoring and chemotherapy. However, there is still a big challenge for current clinic contrast agents to improve their poor tumor selectivity and response. Herein, we report a new kind of Gd complex and folate-coated redox-sensitive lipid-polymer hybrid nanoparticle (Gd-FLPNP) for tumor-targeted magnetic resonance imaging and therapy. Gd-FLPNPs can simultaneously accomplish diagnostic imaging, and specific targeting and controlled release of doxorubicin (DOX). They exhibit good monodispersity, excellent size stability, and a well-defined core-shell structure. Paramagnetic nanoparticles based on gadolinium-diethylenetriaminepentaacetic acid-bis-cetylamine have paramagnetic properties with an approximately two-fold enhancement in the longitudinal relaxivity compared to clinical used Magnevist. For targeted and reduction-sensitive drug delivery, Gd-FLPNPs released DOX faster and enhanced cell uptake in vitro, and exhibited better antitumor effect both in vitro and in vivo.
Collapse
Affiliation(s)
- Bo Wu
- Department of Radiology, Zhongnan Hospital of Wuhan University.,Key Laboratory of Biomedical Polymers, Ministry of Education, Department of Chemistry, Wuhan University, Wuhan, People's Republic of China
| | - Shu-Ting Lu
- Department of Radiology, Zhongnan Hospital of Wuhan University
| | - Kai Deng
- Key Laboratory of Biomedical Polymers, Ministry of Education, Department of Chemistry, Wuhan University, Wuhan, People's Republic of China
| | - Hui Yu
- Key Laboratory of Biomedical Polymers, Ministry of Education, Department of Chemistry, Wuhan University, Wuhan, People's Republic of China
| | - Can Cui
- Key Laboratory of Biomedical Polymers, Ministry of Education, Department of Chemistry, Wuhan University, Wuhan, People's Republic of China
| | - Yang Zhang
- Key Laboratory of Biomedical Polymers, Ministry of Education, Department of Chemistry, Wuhan University, Wuhan, People's Republic of China
| | - Ming Wu
- Key Laboratory of Biomedical Polymers, Ministry of Education, Department of Chemistry, Wuhan University, Wuhan, People's Republic of China
| | - Ren-Xi Zhuo
- Key Laboratory of Biomedical Polymers, Ministry of Education, Department of Chemistry, Wuhan University, Wuhan, People's Republic of China
| | - Hai-Bo Xu
- Department of Radiology, Zhongnan Hospital of Wuhan University
| | - Shi-Wen Huang
- Key Laboratory of Biomedical Polymers, Ministry of Education, Department of Chemistry, Wuhan University, Wuhan, People's Republic of China
| |
Collapse
|
24
|
Chen J, Ouyang J, Chen Q, Deng C, Meng F, Zhang J, Cheng R, Lan Q, Zhong Z. EGFR and CD44 Dual-Targeted Multifunctional Hyaluronic Acid Nanogels Boost Protein Delivery to Ovarian and Breast Cancers In Vitro and In Vivo. ACS Appl Mater Interfaces 2017; 9:24140-24147. [PMID: 28675028 DOI: 10.1021/acsami.7b06879] [Citation(s) in RCA: 91] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Protein drugs with intracellular targets like Granzyme B (GrB) have demonstrated great proliferative inhibition activity in cancer cells. Their clinical translation, however, relies on the development of safe, efficient, and selective protein-delivery vehicles. Here, we report that epidermal growth factor receptor (EGFR) and CD44 dual-targeted multifunctional hyaluronic acid nanogels (EGFR/CD44-NGs) boost protein delivery to ovarian and breast cancers in vitro and in vivo. EGFR/CD44-NGs obtained via nanoprecipitation and photoclick chemistry from hyaluronic acid derivatives with tetrazole, GE11 peptide/tetrazole, and cystamine methacrylate groups had nearly quantitative loading of therapeutic proteins like cytochrome C (CC) and GrB, a small size of ca. 165 nm, excellent stability in serum, and fast protein release under a reductive condition. Flow cytometry assays showed that EGFR/CD44-NGs exhibited over 6-fold better uptake in CD44 and EGFR-positive SKOV-3 ovarian cancer cells than CD44-NGs. In accordance, GrB-loaded EGFR/CD44-NGs (GrB-EGFR/CD44-NGs) displayed enhanced caspase activity and growth inhibition in SKOV-3 cells as compared to GrB-loaded CD44-NGs (GrB-CD44-NGs) control. Intriguingly, the therapeutic studies in SKOV-3 human ovarian carcinoma and MDA-MB-231 human breast tumor xenografted in nude mice revealed that GrB-EGFR/CD44-NGs at a low dose of 3.85 nmol GrB equiv/kg induced nearly complete growth suppression of both tumors, which was obviously more effective than GrB-CD44-NGs, without causing any adverse effects. EGFR and CD44 dual-targeted multifunctional hyaluronic acid nanogels have appeared as a safe and efficacious platform for cancer protein therapy.
Collapse
Affiliation(s)
- Jing Chen
- Biomedical Polymers Laboratory and Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, Soochow University , Suzhou 215123, People's Republic of China
| | - Jia Ouyang
- Department of Neurosurgery, The Second Affiliated Hospital of Soochow University , Suzhou 215004, People's Republic of China
| | - Qijun Chen
- Biomedical Polymers Laboratory and Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, Soochow University , Suzhou 215123, People's Republic of China
| | - Chao Deng
- Biomedical Polymers Laboratory and Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, Soochow University , Suzhou 215123, People's Republic of China
| | - Fenghua Meng
- Biomedical Polymers Laboratory and Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, Soochow University , Suzhou 215123, People's Republic of China
| | - Jian Zhang
- Biomedical Polymers Laboratory and Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, Soochow University , Suzhou 215123, People's Republic of China
| | - Ru Cheng
- Biomedical Polymers Laboratory and Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, Soochow University , Suzhou 215123, People's Republic of China
| | - Qing Lan
- Department of Neurosurgery, The Second Affiliated Hospital of Soochow University , Suzhou 215004, People's Republic of China
| | - Zhiyuan Zhong
- Biomedical Polymers Laboratory and Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, Soochow University , Suzhou 215123, People's Republic of China
| |
Collapse
|
25
|
Qiao H, Zhu Z, Fang D, Sun Y, Kang C, Di L, Zhang L, Gao Y. Redox-triggered mitoxantrone prodrug micelles for overcoming multidrug-resistant breast cancer. J Drug Target 2017; 26:75-85. [PMID: 28583001 DOI: 10.1080/1061186x.2017.1339195] [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] [Indexed: 12/20/2022]
Abstract
Multidrug resistance (MDR) severely hinders the efficient chemotherapeutic treatments of cancer. d-α-Tocopherol polyethylene 1000 succinate (TPGS) based drug delivery system holds the potential of re-sensitizing resistant cancer cells. In this study, a TPGS prodrug containing both TPGS and mitoxantrone (MTO) via a disulphide bond was synthesised and assembled into micelle (TSMm) with a monodispersed diameter of 46.50 ± 1.12 nm. The disulphide bonds within the micelles could be cleaved in response to a high concentration of intracellular glutathione (GSH) after entering the tumour cells, leading a rapid release of MTO. In vitro cytotoxicity study showed TSMm significantly inhibited the growth of resistant breast tumour cells MDA-MB-231/MDR comparing to either free MTO or disulphide-free prodrug micelle (TCMm). In addition, TSMm could sustain favourable intracellular retention and cause the depletion of ATP activity, leading to the preferential transportation of MTO into the nucleus and the reversal of MDR. In vivo imaging also verified that TSMm was specifically targeted to the tumour regions at 24 h post injection. Finally, TSMm has significantly stronger antitumor activity in xenograft nude mice with negligible side effects. Hence, TSMm can serve as promising prodrug candidates to strengthen the reversal of MDR in tumours with less side effects.
Collapse
Affiliation(s)
- Hongzhi Qiao
- a Jiangsu Engineering Research Centre for Efficient Delivery System of TCM, School of Pharmacy , Nanjing University of Chinese Medicine , Nanjing , China
| | - Zhenzhu Zhu
- b State Key Laboratory of Pharmaceutical Biotechnology, School of Life Science , Nanjing University , Nanjing , China
| | - Dong Fang
- a Jiangsu Engineering Research Centre for Efficient Delivery System of TCM, School of Pharmacy , Nanjing University of Chinese Medicine , Nanjing , China
| | - Yuan Sun
- c Department of Chemistry and Biochemistry , The Ohio State University , Columbus , OH , USA
| | - Chen Kang
- d Department of Internal Medicine, Carver College of Medicine , University of Iowa , Iowa City , IA , USA
| | - Liuqing Di
- a Jiangsu Engineering Research Centre for Efficient Delivery System of TCM, School of Pharmacy , Nanjing University of Chinese Medicine , Nanjing , China
| | - Lei Zhang
- a Jiangsu Engineering Research Centre for Efficient Delivery System of TCM, School of Pharmacy , Nanjing University of Chinese Medicine , Nanjing , China
| | - Yahan Gao
- e State Key Laboratory of Natural Medicines, Department of Pharmaceutics , China Pharmaceutical University , Nanjing , China
| |
Collapse
|
26
|
Wu SY, Debele TA, Kao YC, Tsai HC. Synthesis and Characterization of Dual-Sensitive Fluorescent Nanogels for Enhancing Drug Delivery and Tracking Intracellular Drug Delivery. Int J Mol Sci 2017; 18:ijms18051090. [PMID: 28534813 PMCID: PMC5454999 DOI: 10.3390/ijms18051090] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Revised: 04/16/2017] [Accepted: 05/12/2017] [Indexed: 01/09/2023] Open
Abstract
Here, dual-sensitive fluorescent branched alginate-polyethyleneimine copolymer (bAPSC) nanogels were synthesized from thiolated alginate and stearoyl-derivatized branched polyethyleneimine. The formation of bAPSC conjugates was confirmed through proton nuclear magnetic resonance and Fourier transform infrared spectroscopy, whereas dynamic light scattering was used to measure the particle size and ζ potential of the nanogels. The fluorescent properties of the nanogels were confirmed through fluorescent spectroscopy and microscopy. In addition to the excitation-dependent fluorescence behavior, the fluorescence emission intensity of bAPSC was altered by both pH and γ-irradiation. This intensity was higher at a lower pH than at a higher pH, and it slightly decreased after γ-irradiation. The drug loading and encapsulation efficiency of bAPSC were 25.9% and 11.2%, respectively. An in vitro drug release study revealed that the synthesized nanogels release their doxorubicin (Dox) contents in a time-dependent manner, and the drug release was higher after 96 h of incubation. Approximately 43.74% and 88.36% of Dox was released after 96 h of incubation at pH 5.5 in the absence and presence of glutathione (GSH), respectively. However, relatively lower drug release, approximately 21.6% and 16%, was observed in the presence and absence of GSH at pH 7.4, respectively. Fluorescence microscopy confirmed that Dox-loaded bAPSC nanogels were internalized by HeLa cells, and drug distribution was easily tracked using fluorescent materials without additional probing agents. Moreover, cellular cytotoxicity and hemolysis results revealed less cytotoxicity and hemocompatibility of the synthesized nanogels, confirming that they are the most favorable alternative drug carriers for drug delivery systems.
Collapse
Affiliation(s)
- Szu-Yuan Wu
- Institute of Toxicology, College of Medicine, National Taiwan University, Taipei 106, Taiwan.
- Department of Radiation Oncology, Wan Fang Hospital, Taipei Medical University, Taipei 116, Taiwan.
- Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei 110, Taiwan.
- Department of Biotechnology, Hungkuang University, Taichung 433, Taiwan.
| | - Tilahun Ayane Debele
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 106, Taiwan.
| | - Yu-Chih Kao
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 106, Taiwan.
| | - Hsieh-Chih Tsai
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 106, Taiwan.
| |
Collapse
|
27
|
Cheng YJ, Zhang AQ, Hu JJ, He F, Zeng X, Zhang XZ. Multifunctional Peptide-Amphiphile End-Capped Mesoporous Silica Nanoparticles for Tumor Targeting Drug Delivery. ACS Appl Mater Interfaces 2017; 9:2093-2103. [PMID: 28032742 DOI: 10.1021/acsami.6b12647] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A tumor targeting redox-responsive drug delivery system (DDS) with bioactive surface was constructed by immobilizing peptide-based amphiphile C12-CGRKKRRQRRRPPQRGDS (defined as ADDA-TCPP) onto the mesoporous silica nanoparticles (MSNs) as an end-capping nanovalve, which consists of two main segments: a hydrophobic alkyl chain ADDA and a hydrophilic amino acid sequence containing a Tat48-60 peptide sequence with a thiol terminal group and an RGDS targeting ligand, via a disulfide linkage for redox-triggered intracellular drug delivery. A series of characterizations confirmed that the nanosystem had been successfully fabricated. The antitumor drug doxorubicin (DOX) was selected as a model drug and efficiently trapped in the pores of MSNs, and an in vitro release experiment demonstrated that the mesopores of the resulting DOX-loaded MSNs (DOX@MSN-ss-ADDA-TCPP) could be sealed tightly with ADDA-TCPP self-assemblies through hydrophobic interactions between the alkyl chains; the resulting DDS exhibited "zero premature release" of DOX in the physical environment. However, a burst drug release was triggered by a high concentration of glutathione (GSH) in simulated cellular cytosol. Moreover, detailed investigations confirmed that incorporation of RGDS peptide facilitated the active targeting delivery of DOX to αvβ3 integrin overexpressed tumor cells, and Tat48-60 modification on MSNs could enhance intracellular drug delivery, exhibiting an obvious toxicity to tumor cells. The multifunctional nanosystem constructed here can realize the controlled drug release and serve as a platform for designing multifunctional nanocarriers using diversified bioactive peptide-based amphiphile.
Collapse
Affiliation(s)
- Yin-Jia Cheng
- School of Chemistry and Materials Science, South-Central University for Nationalities , Wuhan, Hubei 430074, China
- Key Laboratory of Biomedical Polymers of Ministry of Education and Department of Chemistry, Wuhan University , Wuhan, Hubei 430072, China
| | - Ai-Qing Zhang
- School of Chemistry and Materials Science, South-Central University for Nationalities , Wuhan, Hubei 430074, China
| | - Jing-Jing Hu
- Key Laboratory of Biomedical Polymers of Ministry of Education and Department of Chemistry, Wuhan University , Wuhan, Hubei 430072, China
| | - Feng He
- Key Laboratory of Biomedical Polymers of Ministry of Education and Department of Chemistry, Wuhan University , Wuhan, Hubei 430072, China
| | - Xuan Zeng
- Key Laboratory of Biomedical Polymers of Ministry of Education and Department of Chemistry, Wuhan University , Wuhan, Hubei 430072, China
| | - Xian-Zheng Zhang
- Key Laboratory of Biomedical Polymers of Ministry of Education and Department of Chemistry, Wuhan University , Wuhan, Hubei 430072, China
| |
Collapse
|
28
|
Hu H, Li Y, Zhou Q, Ao Y, Yu C, Wan Y, Xu H, Li Z, Yang X. Redox-Sensitive Hydroxyethyl Starch-Doxorubicin Conjugate for Tumor Targeted Drug Delivery. ACS Appl Mater Interfaces 2016; 8:30833-30844. [PMID: 27791359 DOI: 10.1021/acsami.6b11932] [Citation(s) in RCA: 77] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Doxorubicin (DOX) is one of the most potent anticancer agents in cancer chemotherapy, but the clinical use of DOX is restricted by its severe side effects caused by nonspecific delivery. To alleviate the side effects and improve the antitumor efficacy of DOX, a novel redox-sensitive hydroxyethyl starch-doxorubicin conjugate, HES-SS-DOX, with diameter of 19.9 ± 0.4 nm was successfully prepared for tumor targeted drug delivery and GSH-mediated intracellular drug release. HES-SS-DOX was relatively stable under extracellular GSH level (∼2 μM) but released DOX quickly under intracellular GSH level (2-10 mM). In vitro cell study confirmed the GSH-mediated cytotoxicity of HES-SS-DOX. HES-SS-DOX exhibited prolonged plasma half-life time and enhanced tumor accumulation in comparison to free DOX. As a consequence, HES-SS-DOX exhibited better antitumor efficacy and reduced toxicity as compared to free DOX in the in vivo antitumor activity study. The redox-sensitive HES-SS-DOX was proved to be a promising prodrug of DOX, with clinical potentials, to achieve tumor targeted drug delivery and timely intracellular drug release for effective and safe cancer chemotherapy.
Collapse
Affiliation(s)
- Hang Hu
- National Engineering Research Center for Nanomedicine, College of Life Science and Technology, Huazhong University of Science and Technology , Wuhan 430074, People's Republic of China
| | - Yihui Li
- National Engineering Research Center for Nanomedicine, College of Life Science and Technology, Huazhong University of Science and Technology , Wuhan 430074, People's Republic of China
| | - Qing Zhou
- National Engineering Research Center for Nanomedicine, College of Life Science and Technology, Huazhong University of Science and Technology , Wuhan 430074, People's Republic of China
| | - Yanxiao Ao
- National Engineering Research Center for Nanomedicine, College of Life Science and Technology, Huazhong University of Science and Technology , Wuhan 430074, People's Republic of China
| | - Chan Yu
- National Engineering Research Center for Nanomedicine, College of Life Science and Technology, Huazhong University of Science and Technology , Wuhan 430074, People's Republic of China
| | - Ying Wan
- National Engineering Research Center for Nanomedicine, College of Life Science and Technology, Huazhong University of Science and Technology , Wuhan 430074, People's Republic of China
| | - Huibi Xu
- National Engineering Research Center for Nanomedicine, College of Life Science and Technology, Huazhong University of Science and Technology , Wuhan 430074, People's Republic of China
| | - Zifu Li
- National Engineering Research Center for Nanomedicine, College of Life Science and Technology, Huazhong University of Science and Technology , Wuhan 430074, People's Republic of China
- Wuhan Institute of Biotechnology , High Tech Road 666, East Lake High Tech Zone, Wuhan 430040, People's Republic of China
| | - Xiangliang Yang
- National Engineering Research Center for Nanomedicine, College of Life Science and Technology, Huazhong University of Science and Technology , Wuhan 430074, People's Republic of China
| |
Collapse
|
29
|
Huo M, Liu Y, Wang L, Yin T, Qin C, Xiao Y, Yin L, Liu J, Zhou J. Redox-Sensitive Micelles Based on O,N-Hydroxyethyl Chitosan-Octylamine Conjugates for Triggered Intracellular Delivery of Paclitaxel. Mol Pharm 2016; 13:1750-62. [PMID: 27100204 DOI: 10.1021/acs.molpharmaceut.5b00696] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A redox-sensitive micellar system constructed from an O,N-hydroxyethyl chitosan-octylamine (HECS-ss-OA) conjugate with disulfide linkages between the hydrophobic alkyl chains and hydrophilic chitosan backbone was synthesized for triggered intracellular delivery of hydrophobic paclitaxel (PTX). In aqueous environments, conjugates formed micelles with high PTX loading (>30%). Mechanistically, the sensitivity of HECS-ss-OA micelles to reducing environments was investigated using the parameters of in vitro release and particle size. Intracellular release of nile red fluorescence alongside cytotoxicity studies further confirmed the potency of redox-sensitive micelles for intracellular drug delivery compared with redox-insensitive micelles. Additionally, an in vivo study confirmed the efficacy of PTX-loaded micelles in tumor-bearing mice with superior antitumor efficacy and diminished systemic toxicity when compared with the redox-insensitive micelles and a PTX solution. These results demonstrate the potential of redox-sensitive HECS-ss-OA micelles for intracellular trafficking of lipophilic anticancer drugs.
Collapse
Affiliation(s)
- Meirong Huo
- State Key Laboratory of Natural Medicines, Department of Pharmaceutics, China Pharmaceutical University , 24 Tongjiaxiang, Nanjing 210009, China
| | - Yao Liu
- State Key Laboratory of Natural Medicines, Department of Pharmaceutics, China Pharmaceutical University , 24 Tongjiaxiang, Nanjing 210009, China
| | - Lei Wang
- State Key Laboratory of Natural Medicines, Department of Pharmaceutics, China Pharmaceutical University , 24 Tongjiaxiang, Nanjing 210009, China
| | - Tingjie Yin
- State Key Laboratory of Natural Medicines, Department of Pharmaceutics, China Pharmaceutical University , 24 Tongjiaxiang, Nanjing 210009, China
| | - Chen Qin
- State Key Laboratory of Natural Medicines, Department of Pharmaceutics, China Pharmaceutical University , 24 Tongjiaxiang, Nanjing 210009, China
| | - Yanyu Xiao
- State Key Laboratory of Natural Medicines, Department of Pharmaceutics, China Pharmaceutical University , 24 Tongjiaxiang, Nanjing 210009, China
| | - Lifang Yin
- State Key Laboratory of Natural Medicines, Department of Pharmaceutics, China Pharmaceutical University , 24 Tongjiaxiang, Nanjing 210009, China
| | - Jiyong Liu
- Department of Pharmacy, Changhai Hospital, The Second Military Medical University , Shanghai 200433, China
| | - Jianping Zhou
- State Key Laboratory of Natural Medicines, Department of Pharmaceutics, China Pharmaceutical University , 24 Tongjiaxiang, Nanjing 210009, China
| |
Collapse
|
30
|
Han B, Wang Y, Wang L, Shang Z, Wang S, Pei J. Preparation of GST Inhibitor Nanoparticle Drug Delivery System and Its Reversal Effect on the Multidrug Resistance in Oral Carcinoma. Nanomaterials (Basel) 2015; 5:1571-1587. [PMID: 28347082 PMCID: PMC5304786 DOI: 10.3390/nano5041571] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/25/2015] [Revised: 09/23/2015] [Accepted: 09/24/2015] [Indexed: 12/17/2022]
Abstract
During the chemotherapy of cancer, drug resistance is the first issue that chemotherapeutic drugs cannot be effectively used for the treatment of cancers repeatedly for a long term, and the main reason for this is that tumor cell detoxification is mediated by GSH (glutathione) catalyzed by GST (glutathione-S-transferase). In this study, a GST inhibitor, ethacrynic acid (ECA), was designed to be coupled with methoxy poly(ethylene glycol)-poly(lactide) (MPEG-PLA) by disulfide bonds to prepare methoxy poly(ethylene glycol)-poly(lactide)-disulphide bond-mthacrynic acid (MPEG-PLA-SS-ECA) as a carrier material of the nanoparticles. Nanoparticles of pingyangmycin (PYM) and carboplatin (CBP) were prepared, respectively, and their physicochemical properties were investigated. The ECA at the disulfide could be released in the presence of GSH, the pingyangmycin, carboplatin and ECA were all uniformly released, and the nanoparticles could release all the drugs completely within 10 days. The half maximal inhibitory concentration (IC50) of the prepared MPEG-PLA-SS-ECA/CBP and MPEG-PLA-SS-ECA/PYM nanoparticles in drug-resistant oral squamous cell carcinoma cell lines SCC15/CBP and SCC15/PYM cells was 12.68 μg·mL-¹ and 12.76 μg·mL-¹, respectively; the resistant factor RF of them in the drug-resistant cells were 1.51 and 1.24, respectively, indicating that MPEG-PLA-SS-ECA nanoparticles can reverse the drug resistance of these two drug-resistant cells.
Collapse
Affiliation(s)
- Bing Han
- School of Pharmaceutical Sciences, Jilin University, No.1266 Fujin Road, Changchun 130012, China.
| | - Yanli Wang
- Changchun Women and Children Health Hospital, No. 962 Xinfa Road, Changchun 130061, China.
| | - Lan Wang
- School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, No.103 Wenhua Road, Shenyang 110016, China.
| | - Zuhui Shang
- School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, No.103 Wenhua Road, Shenyang 110016, China.
| | - Shuang Wang
- China Japan Union Hospital, Jilin University, No. 126 Xiantai Street, Changchun 130033, China.
| | - Jin Pei
- School of Pharmaceutical Sciences, Jilin University, No.1266 Fujin Road, Changchun 130012, China.
| |
Collapse
|
31
|
Yin T, Wu Q, Wang L, Yin L, Zhou J, Huo M. Well-Defined Redox-Sensitive Polyethene Glycol-Paclitaxel Prodrug Conjugate for Tumor-Specific Delivery of Paclitaxel Using Octreotide for Tumor Targeting. Mol Pharm 2015; 12:3020-31. [PMID: 26086430 DOI: 10.1021/acs.molpharmaceut.5b00280] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A redox-sensitive prodrug, octreotide(Phe)-polyethene glycol-disulfide bond-paclitaxel [OCT(Phe)-PEG-ss-PTX], was successfully developed for targeted intracellular delivery of PTX. The formulation emphasizes long-circulation-time polymer-drug conjugates, combined targeting based on EPR and OCT-receptor mediated endocytosis, sharp redox response, and programmed drug release. The nontargeted redox-sensitive prodrug, mPEG-ss-PTX, and the targeted insensitive prodrug, OCT(Phe)-PEG-PTX, were also synthesized as controls. These polymer-PTX conjugates, structurally confirmed by 1H NMR, exhibited approximately 23,000-fold increase in water solubility over parent PTX and possessed drug contents ranging from 11% to 14%. The redox-sensitivity of the objective OCT(Phe)-PEG-ss-PTX prodrug was verified by in vitro PTX release profile in simulated reducing conditions, and the SSTRs-mediated endocytosis was demonstrated by flow cytometry and confocal laser scanning microscopy analyses. Consequently, compared with mPEG-PTX and OCT(Phe)-PEG-PTX, the OCT(Phe)-PEG-ss-PTX exhibited much stronger cyotoxicity and apoptosis-inducing ability against NCI-H446 tumor cells (SSTRs overexpression), whereas a comparable cytotoxicity of these prodrugs was obtained against WI-38 normal cells (no SSTRs expression). Finally, the in vivo studies on NCI-H466 tumor-bearing nude mice demonstrated that the OCT(Phe)-PEG-ss-PTX possessed superior tumor-targeting ability and antitumor activity over mPEG-PTX, OCT(Phe)-PEG-PTX and Taxol, as well as minimal collateral damage. This targeted redox-sensitive polymer-PTX prodrug system is promising in tumor therapy.
Collapse
Affiliation(s)
- Tingjie Yin
- State Key Laboratory of Natural Medicines, Department of Pharmaceutics, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, China
| | - Qu Wu
- State Key Laboratory of Natural Medicines, Department of Pharmaceutics, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, China
| | - Lei Wang
- State Key Laboratory of Natural Medicines, Department of Pharmaceutics, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, China
| | - Lifang Yin
- State Key Laboratory of Natural Medicines, Department of Pharmaceutics, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, China
| | - Jianping Zhou
- State Key Laboratory of Natural Medicines, Department of Pharmaceutics, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, China
| | - Meirong Huo
- State Key Laboratory of Natural Medicines, Department of Pharmaceutics, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, China
| |
Collapse
|
32
|
Zhang A, Zhang Z, Shi F, Xiao C, Ding J, Zhuang X, He C, Chen L, Chen X. Redox-sensitive shell-crosslinked polypeptide-block-polysaccharide micelles for efficient intracellular anticancer drug delivery. Macromol Biosci 2013; 13:1249-58. [PMID: 23840011 DOI: 10.1002/mabi.201300175] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [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: 04/06/2013] [Revised: 04/24/2013] [Indexed: 12/27/2022]
Abstract
Redox-responsive SCMs based on amphiphilic PBLG-b-dextran with good biocompatibility are synthesized and used for efficient intracellular drug delivery. The molecular structures and SCMs characteristics are characterized by (1) H NMR, FT-IR, TEM, and DLS. The hydrodynamic radius of SCMs increases gradually in PBS due to the cleavage of disulfide bond in micellar shell caused by the presence of GSH. The encapsulation efficiency and release kinetics of DOX are investigated. The fastest DOX release is observed under intracellular-mimicking reductive environments. An MTT assay demonstrates that DOX-loaded SCMs show higher cellular proliferation inhibition against GSH-OEt pretreated HeLa and HepG2 than that of the non-pretreated and BSO-pretreated ones.
Collapse
Affiliation(s)
- Aiping Zhang
- Department of Chemistry, Northeast Normal University, Changchun, 130024, China
| | | | | | | | | | | | | | | | | |
Collapse
|