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Han J, Yang W, Li Y, Li J, Jiang F, Xie J, Huang X. Combining Doxorubicin-Conjugated Polymeric Nanoparticles and 5-Aminolevulinic Acid for Enhancing Radiotherapy against Lung Cancer. Bioconjug Chem 2022; 33:654-665. [PMID: 35385661 DOI: 10.1021/acs.bioconjchem.2c00066] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Radiation therapy (RT) concurrent with chemotherapy improves local lung cancer control but may cause systemic toxicity. There is an unmet clinical need of treatments that can selectively sensitize cancer cells to RT. Herein, we explored a radiosensitizing strategy that combines doxorubicin (DOX)-encapsulated polyaspartamide nanoparticles and 5-aminolevulinic acid (5-ALA). The DOX-polyaspartamide nanoparticles were coupled with NTSmut, a ligand specific to neurotensin receptor type 1 (NTSR1), for lung cancer targeting. DOX was coupled to the polymer backbone through a pH-sensitive hydrazone linker, which allows for controlled release of the drug in an acidic tumor micromovement. Meanwhile, 5-ALA accumulates in the cancer cell's mitochondria, forming protoporphyrin (PpIX) that amplifies RT-induced oxidative stress. When tested in vitro in H1299 cells, DOX-encapsulated nanoparticles in conjugation with 5-ALA enhanced cancer cell killing owing to the complementary radiosensitizing effects of DOX and 5-ALA. In vivo studies confirmed that the combination improved tumor suppression relative to RT alone without causing toxicity to normal tissues. Overall, our study suggests an effective and selective radiosensitizing approach.
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Affiliation(s)
- Jinghua Han
- College of Pharmacy, Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300353, China
| | - Wei Yang
- Department of Chemistry, University of Georgia, Athens, Georgia 30602, United States
| | - Yuanke Li
- State Key Laboratory of Medicinal Chemical Biology, and Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Jianwen Li
- Department of Chemistry, University of Georgia, Athens, Georgia 30602, United States
| | - Fangchao Jiang
- Department of Chemistry, University of Georgia, Athens, Georgia 30602, United States
| | - Jin Xie
- Department of Chemistry, University of Georgia, Athens, Georgia 30602, United States
| | - Xinglu Huang
- State Key Laboratory of Medicinal Chemical Biology, and Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Sciences, Nankai University, Tianjin 300071, China
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2
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Boddu SHS, Bhagav P, Karla PK, Jacob S, Adatiya MD, Dhameliya TM, Ranch KM, Tiwari AK. Polyamide/Poly(Amino Acid) Polymers for Drug Delivery. J Funct Biomater 2021; 12:58. [PMID: 34698184 PMCID: PMC8544418 DOI: 10.3390/jfb12040058] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2021] [Revised: 09/29/2021] [Accepted: 10/01/2021] [Indexed: 12/29/2022] Open
Abstract
Polymers have always played a critical role in the development of novel drug delivery systems by providing the sustained, controlled and targeted release of both hydrophobic and hydrophilic drugs. Among the different polymers, polyamides or poly(amino acid)s exhibit distinct features such as good biocompatibility, slow degradability and flexible physicochemical modification. The degradation rates of poly(amino acid)s are influenced by the hydrophilicity of the amino acids that make up the polymer. Poly(amino acid)s are extensively used in the formulation of chemotherapeutics to achieve selective delivery for an appropriate duration of time in order to lessen the drug-related side effects and increase the anti-tumor efficacy. This review highlights various poly(amino acid) polymers used in drug delivery along with new developments in their utility. A thorough discussion on anticancer agents incorporated into poly(amino acid) micellar systems that are under clinical evaluation is included.
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Affiliation(s)
- Sai H. S. Boddu
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, Ajman University, Ajman P.O. Box 346, United Arab Emirates
- Center of Medical and Bio-Allied Health Sciences Research, Ajman University, Ajman P.O. Box 346, United Arab Emirates;
| | - Prakash Bhagav
- Advanced Drug Delivery Research and Development, Sampann Research and Development, Panacea Biotec Ltd., Ambala, Chandigarh Highway, Lalru 140501, India;
| | - Pradeep K. Karla
- Department of Pharmaceutical Sciences, College of Pharmacy, Howard University, 2300 4th St. N.W., Washington, DC 20059, USA
| | - Shery Jacob
- Department of Pharmaceutical Sciences, College of Pharmacy, Gulf Medical University, Ajman 4184, United Arab Emirates;
| | - Mansi D. Adatiya
- Lallubhai Motilal College of Pharmacy, Navrangpura, Ahmedabad 380009, India; (M.D.A.); (T.M.D.); (K.M.R.)
| | - Tejas M. Dhameliya
- Lallubhai Motilal College of Pharmacy, Navrangpura, Ahmedabad 380009, India; (M.D.A.); (T.M.D.); (K.M.R.)
| | - Ketan M. Ranch
- Lallubhai Motilal College of Pharmacy, Navrangpura, Ahmedabad 380009, India; (M.D.A.); (T.M.D.); (K.M.R.)
| | - Amit K. Tiwari
- Center of Medical and Bio-Allied Health Sciences Research, Ajman University, Ajman P.O. Box 346, United Arab Emirates;
- Department of Pharmacology & Experimental Therapeutics, Health Science Campus, The University of Toledo, 3000 Arlington Ave., Toledo, OH 43614, USA
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Chen C, Duan N, Chen S, Guo Z, Hu J, Guo J, Chen Z, Yang L. Synthesis mechanical properties and self-healing behavior of aliphatic polycarbonate hydrogels based on cooperation hydrogen bonds. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.114134] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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Németh C, Gyarmati B, Abdullin T, László K, Szilágyi A. Poly(aspartic acid) with adjustable pH-dependent solubility. Acta Biomater 2017; 49:486-494. [PMID: 27915021 DOI: 10.1016/j.actbio.2016.11.065] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Revised: 11/21/2016] [Accepted: 11/29/2016] [Indexed: 01/13/2023]
Abstract
Poly(aspartic acid) (PASP) derivatives with adjustable pH-dependent solubility were synthesized and characterized to establish the relationship between their structure and solubility in order to predict their applicability as a basic material for enteric coatings. Polysuccinimide, the precursor of PASP, was modified with short chain alkylamines, and the residual succinimide rings were subsequently opened to prepare the corresponding PASP derivatives. Study of the effect of the type and concentration of the side groups on the pH-dependent solubility of PASP showed that solubility can be adjusted by proper selection of the chemical structure. The Henderson-Hasselbalch (HH) and the extended HH equations were used to describe the pH-dependent solubility of the polymers quantitatively. The estimate provided by the HH equation is poor, but an accurate description of the pH-dependent solubility can be found with the extended HH equation. The dissolution rate of a polymer film prepared from a selected PASP derivative was determined by fluorescence marking. The film dissolved rapidly when the pH was increased above its pKa. Cellular viability tests show that PASP derivatives are non-toxic to a human cell line. These polymers are thus of great interest as starting materials for enteric coatings. STATEMENT OF SIGNIFICANCE Poly(amino acid) type biocompatible polymers were synthesized for future use as pharmaceutical film coatings. To this end, we tailored the pH-dependent solubility of poly(aspartic acid) (PASP). It was found that both the solubility and the pKa values of the modified PASP depended strongly on composition. Fluorescent marking was used to characterize the dissolution of a chosen PASP derivative. In acidic media only a negligible amount of the polymer dissolved, but dissolution was very fast and complete at the pH values that prevail in the small intestine. As a consequence, enteric coatings based on such PASP derivatives may be used for drug delivery in the gastrointestinal tract.
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Affiliation(s)
- Csaba Németh
- Department of Physical Chemistry and Materials Science, Budapest University of Technology and Economics, Műegyetem rkp. 3., H-1111 Budapest, Hungary
| | - Benjámin Gyarmati
- Department of Physical Chemistry and Materials Science, Budapest University of Technology and Economics, Műegyetem rkp. 3., H-1111 Budapest, Hungary
| | - Timur Abdullin
- Institute of Fundamental Medicine and Biology, Kazan (Volga Region) Federal University, 18 Kremlyovskaya St., 420008 Kazan, Russia
| | - Krisztina László
- Department of Physical Chemistry and Materials Science, Budapest University of Technology and Economics, Műegyetem rkp. 3., H-1111 Budapest, Hungary
| | - András Szilágyi
- Department of Physical Chemistry and Materials Science, Budapest University of Technology and Economics, Műegyetem rkp. 3., H-1111 Budapest, Hungary.
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Mumcuoglu D, Sardan M, Tekinay T, Guler MO, Tekinay AB. Oligonucleotide delivery with cell surface binding and cell penetrating Peptide amphiphile nanospheres. Mol Pharm 2015; 12:1584-91. [PMID: 25828697 DOI: 10.1021/acs.molpharmaceut.5b00007] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A drug delivery system designed specifically for oligonucleotide therapeutics can ameliorate the problems associated with the in vivo delivery of these molecules. The internalization of free oligonucleotides is challenging, and cytotoxicity is the main obstacle for current transfection vehicles. To develop nontoxic delivery vehicles for efficient transfection of oligonucleotides, we designed a self-assembling peptide amphiphile (PA) nanosphere delivery system decorated with cell penetrating peptides (CPPs) containing multiple arginine residues (R4 and R8), and a cell surface binding peptide (KRSR), and report the efficiency of this system in delivering G-3129, a Bcl-2 antisense oligonucleotide (AON). PA/AON (peptide amphiphile/antisense oligonucleotide) complexes were characterized with regards to their size and secondary structure, and their cellular internalization efficiencies were evaluated. The effect of the number of arginine residues on the cellular internalization was investigated by both flow cytometry and confocal imaging, and the results revealed that uptake efficiency improved as the number of arginines in the sequence increased. The combined effect of cell penetration and surface binding property on the cellular internalization and its uptake mechanism was also evaluated by mixing R8-PA and KRSR-PA. R8 and R8/KRSR decorated PAs were found to drastically increase the internalization of AONs compared to nonbioactive PA control. Overall, the KRSR-decorated self-assembled PA nanospheres were demonstrated to be noncytotoxic delivery vectors with high transfection rates and may serve as a promising delivery system for AONs.
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Affiliation(s)
- Didem Mumcuoglu
- †Institute of Materials Science and Nanotechnology, National Nanotechnology Research Center (UNAM), Bilkent University, 06800 Ankara, Turkey
| | - Melis Sardan
- †Institute of Materials Science and Nanotechnology, National Nanotechnology Research Center (UNAM), Bilkent University, 06800 Ankara, Turkey
| | - Turgay Tekinay
- ‡Department of Medical Biology and Genetics, Faculty of Medicine, Life Sciences Application and Research Center, Gazi University, 06500 Ankara, Turkey
| | - Mustafa O Guler
- †Institute of Materials Science and Nanotechnology, National Nanotechnology Research Center (UNAM), Bilkent University, 06800 Ankara, Turkey
| | - Ayse B Tekinay
- †Institute of Materials Science and Nanotechnology, National Nanotechnology Research Center (UNAM), Bilkent University, 06800 Ankara, Turkey
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Dual-responsive mPEG-PLGA-PGlu hybrid-core nanoparticles with a high drug loading to reverse the multidrug resistance of breast cancer: an in vitro and in vivo evaluation. Acta Biomater 2015; 16:156-68. [PMID: 25662165 DOI: 10.1016/j.actbio.2015.01.039] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2014] [Revised: 01/21/2015] [Accepted: 01/26/2015] [Indexed: 11/21/2022]
Abstract
In this study, monomethoxy (polyethylene glycol)-b-P (d,l-lactic-co-glycolic acid)-b-P (l-glutamic acid) (mPEG-PLGA-PGlu) nanoparticles with the ability to rapidly respond to the endolysosomal pH and hydrolase were prepared and the pH-sensitivity was tuned by adjusting the length of the PGlu segment. The mPEG5k-PLGA20k-PGlu (60) nanoparticles were specifically responsive to an endosomal pH of 5.0-6.0 due to the configuration transition of the PGlu segment and rapidly initiated chemical degradation after incubation with proteinase k for 10 min. Doxorubicin hydrochloride (DOX), used as a model drug, was easily encapsulated into nanoparticles and the DOX-loaded nanoparticles (DOX-NPs) exhibited a pH-dependent and enzyme-sensitive release profile in vitro. The dual sensitivity enabled the rapid escape of DOX-loaded nanoparticles from the endolysosomal system to target cellular nuclei, which resulted in increased cell toxicity against MCF/ADR resistant breast cancer cells and a higher cellular uptake than free DOX. In Vivo Imaging studies indicated that the nanoparticles could continuously accumulate in the tumor tissues through EPR effects and Ex vivo Imaging biodistribution studies indicated that DOX-NPs increased drug penetration into tumors compared with normal tissues. The in vivo antitumor activity demonstrated that DOX-loaded NPs had less body loss and a significant regression of tumor growth, indicating the increased anti-tumor efficacy and lower systemic toxicity. Therefore, this dual sensitive nanoparticle system may be a potential nanocarrier to overcome the multidrug resistance exhibited by breast cancer.
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7
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Amphiphilic poly(amino acid) based micelles applied to drug delivery: The in vitro and in vivo challenges and the corresponding potential strategies. J Control Release 2015; 199:84-97. [DOI: 10.1016/j.jconrel.2014.12.012] [Citation(s) in RCA: 101] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2014] [Revised: 12/09/2014] [Accepted: 12/10/2014] [Indexed: 01/08/2023]
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8
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Lu C, Liu N, Gu X, Li B, Wang Y, Gao H, Ma J, Wu G. Synthesis and characterization of biocompatible zwitterionic sulfobetaine polypeptides and their resistance to protein adsorption. JOURNAL OF POLYMER RESEARCH 2014. [DOI: 10.1007/s10965-014-0578-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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9
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Otsuka T, Maeda T, Hotta A. Effects of Salt Concentrations of the Aqueous Peptide-Amphiphile Solutions on the Sol–Gel Transitions, the Gelation Speed, and the Gel Characteristics. J Phys Chem B 2014; 118:11537-45. [DOI: 10.1021/jp5031569] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Takahiro Otsuka
- Department of Mechanical
Engineering, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Tomoki Maeda
- Department of Mechanical
Engineering, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Atsushi Hotta
- Department of Mechanical
Engineering, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
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10
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Yeh JC, Hsu YT, Su CM, Wang MC, Lee TH, Lou SL. Preparation and characterization of biocompatible and thermoresponsive micelles based on poly(N-isopropylacrylamide-co-N,N-dimethylacrylamide) grafted on polysuccinimide for drug delivery. J Biomater Appl 2014; 29:442-53. [DOI: 10.1177/0885328214533736] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Biocompatible and temperature-sensitive amphiphilic polymeric micelles comprised of poly(succinimide)- g-poly( N-isopropylacrylamide- co-N, N-dimethylacrylamide) (PSI- g-poly(NIPAAm- co-DMAAm)) were synthesized to use as new drug carriers. The PSI- co-poly(PNIPAAm- co-DMAAm) polymers were prepared by nucleophilic opening of poly(succinimide) using amino-terminated poly(NIPAAm- co-DMAAm). The lower critical solution temperature of the copolymer was 40.6℃ higher than normal human body temperature. The blank polymeric micelles were observed to have a regular spherical shape, and the particle sizes were approximately 85 nm. This copolymer exhibited no significant cytotoxicity and hemolysis indicated that the micelles had good biocompatibility. In addition, these polymeric micelles encapsulated the anti-inflammatory drug, hesperetin, in the inner core with a drug loading content of approximately 20%. The release profiles of hesperetin showed a significant temperature-sensitive switching behavior. The hesperetin release response was dramatically lower at a temperature below the lower critical solution temperature as compared with a temperature above the lower critical solution temperature. The lipopolysaccharide-induced nitric oxide production inhibition experiments demonstrated that hesperetin-encapsulated micelles showed a significant reduction. In this study, the biocompatible temperature-sensitive micelles based on PSI- g-poly(NIPAAm- co-DMAAm) have great potential to act as a suitable carrier for drug delivery.
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Affiliation(s)
- Jih-Chao Yeh
- Department of Biomedical Engineering, Chung Yuan Christian University, Chung Li, Taiwan
- Stroke Center and Department of Neurology, Chang Gung Memorial Hospital, Linkou Medical Center and College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Ya-Ting Hsu
- Department of Biomedical Engineering, Chung Yuan Christian University, Chung Li, Taiwan
| | - Chao-Ming Su
- Department of Biomedical Engineering, Chung Yuan Christian University, Chung Li, Taiwan
| | - Ming-Chen Wang
- Department of Biomedical Engineering, Chung Yuan Christian University, Chung Li, Taiwan
| | - Tsong-Hai Lee
- Stroke Center and Department of Neurology, Chang Gung Memorial Hospital, Linkou Medical Center and College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Shyh-Liang Lou
- Department of Biomedical Engineering, Chung Yuan Christian University, Chung Li, Taiwan
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11
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Lu C, Li B, Liu N, Wu G, Gao H, Ma J. A hydrazone crosslinked zwitterionic polypeptide nanogel as a platform for controlled drug delivery. RSC Adv 2014. [DOI: 10.1039/c4ra08871a] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
A pH-responsive polypeptide nanogel was prepared via hydrazone self-crosslinking under mild conditions.
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Affiliation(s)
- Caicai Lu
- Key Laboratory of Functional Polymer Materials
- Institute of Polymer Chemistry
- Nankai University
- Tianjin 300071, PR China
| | - Bingqiang Li
- Key Laboratory of Functional Polymer Materials
- Institute of Polymer Chemistry
- Nankai University
- Tianjin 300071, PR China
| | - Na Liu
- Key Laboratory of Functional Polymer Materials
- Institute of Polymer Chemistry
- Nankai University
- Tianjin 300071, PR China
| | - Guolin Wu
- Key Laboratory of Functional Polymer Materials
- Institute of Polymer Chemistry
- Nankai University
- Tianjin 300071, PR China
- Collaborative Innovation Center of Chemical Science and Engineering
| | - Hui Gao
- School of Chemistry and Chemical Engineering
- Tianjin University of Technology
- Tianjin 300191, PR China
| | - Jianbiao Ma
- School of Chemistry and Chemical Engineering
- Tianjin University of Technology
- Tianjin 300191, PR China
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12
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Lu C, Wang X, Wu G, Wang J, Wang Y, Gao H, Ma J. An injectable and biodegradable hydrogel based on poly(α,β-aspartic acid) derivatives for localized drug delivery. J Biomed Mater Res A 2013; 102:628-38. [DOI: 10.1002/jbm.a.34725] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2012] [Revised: 03/15/2013] [Accepted: 03/21/2013] [Indexed: 01/26/2023]
Affiliation(s)
- Caicai Lu
- Key Laboratory of Functional Polymer Materials, Institute of Polymer Chemistry; Nankai University; Tianjin 300071 People's Republic of China
| | - Xiaojuan Wang
- Key Laboratory of Functional Polymer Materials, Institute of Polymer Chemistry; Nankai University; Tianjin 300071 People's Republic of China
| | - Guolin Wu
- Key Laboratory of Functional Polymer Materials, Institute of Polymer Chemistry; Nankai University; Tianjin 300071 People's Republic of China
| | - Jingjing Wang
- Key Laboratory of Functional Polymer Materials, Institute of Polymer Chemistry; Nankai University; Tianjin 300071 People's Republic of China
| | - Yinong Wang
- Key Laboratory of Functional Polymer Materials, Institute of Polymer Chemistry; Nankai University; Tianjin 300071 People's Republic of China
| | - Hui Gao
- School of Chemistry and Chemical Engineering; Tianjin University of Technology; Tianjin 300191 People's Republic of China
| | - Jianbiao Ma
- School of Chemistry and Chemical Engineering; Tianjin University of Technology; Tianjin 300191 People's Republic of China
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Gu X, Wang J, Wang Y, Wang Y, Gao H, Wu G. Layer-by-layer assembled polyaspartamide nanocapsules for pH-responsive protein delivery. Colloids Surf B Biointerfaces 2013; 108:205-11. [PMID: 23563286 DOI: 10.1016/j.colsurfb.2013.03.007] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2013] [Revised: 03/08/2013] [Accepted: 03/11/2013] [Indexed: 01/19/2023]
Abstract
Biodegradable shell cross-linked nanocapsules were prepared via layer-by-layer assembly of PADH (tertiary amine and hydrazide grafted polyaspartamide) and PACA (carboxyl and aldehyde grafted polyaspartamide) on silica spheres. Both of the polyaspartamide derivatives are water-soluble and biodegradable polymers with a protein-like structure, and obtained by aminolysis reaction of polysuccinimide. The latter is prepared by thermal polycondensation of aspartic acid. Dynamic light scattering and zeta potential measurements were used to analyze the layer-by-layer assembly process. Bovine serum albumin (BSA), as a model protein, was entrapped in the nanocapsules via electrostatic adsorption. Nanocapsules encapsulating BSA were prepared via layer-by-layer assembly on protein-entrapping amino-functionalized silica spheres, hydrazone cross-linking and silica core removal. The BSA release profiles exhibited a pH-dependent behavior. BSA release rate increased significantly as the ambient pH dropped from the physiological pH to acidic. Cell viability study suggests that the obtained polymeric nanocapsules have good biocompatibility. These kinds of novel composite nanocapsules may offer a promising delivery system for proteins.
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Affiliation(s)
- Xin Gu
- Key Laboratory of Functional Polymer Materials of MOE, Institute of Polymer Chemistry, Nankai University, Tianjin, 300071, PR China
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14
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Wu JL, Liu CG, Wang XL, Huang ZH. Preparation and characterization of nanoparticles based on histidine-hyaluronic acid conjugates as doxorubicin carriers. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2012; 23:1921-1929. [PMID: 22580754 DOI: 10.1007/s10856-012-4665-8] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2011] [Accepted: 04/26/2012] [Indexed: 05/31/2023]
Abstract
Histidine-hyaluronic acid (His-HA) conjugates were synthesized using hyaluronic acid (HA) as a hydrophilic segment and histidine (His) as hydrophobic segment by 1-ethyl-3(3-dimethylaminopropyl)carbodiimide (EDC) mediated coupling reactions. The structural characteristics of the His-HA conjugates were investigated using (1)H NMR. His-HA nanoparticles (HH-NPs) were prepared based on His-HA conjugates, and the characteristics of HH-NPs were investigated using dynamic light scattering, transmission electron microscopy (TEM), scanning electron microscopy (SEM), and fluorescence spectroscopy. The particles were between 342 and 732 nm in size, depending on the degree of substitution (DS) of the His. TEM and SEM images indicated that the morphology of HH-NPs was spherical in shape. The critical aggregation concentrations of HH-NPs ranged from 0.034 to 0.125 mg/ml, which decreased with an increase in the DS of the His. Images of fluorescence microscopy indicate that HH-NPs were taken up by the cancer cell line (MCF-7), and significantly decreased by competition inhibition of free HA. From the cytotoxicity test, it was found that DOX-loaded HH-NPs exhibited similar dose and time-dependent cytotoxicity against MCF-7 cells with free DOX.
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Affiliation(s)
- Jing-liang Wu
- College of Marine Life Science, Ocean University of China, Qingdao, People's Republic of China
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15
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Wang Y, Xue M, Wei J, Li C, Zhang R, Cao H, Yang J, Tan T. Novel solvent-free synthesis and modification of polyaspartic acid hydrogel. RSC Adv 2012. [DOI: 10.1039/c2ra20661g] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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16
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Fang Y, Pang PP, Lai ZY. pH-Responsive Self-assembly of Partially Hydrolyzed Polyacrylamide in Aqueous Solution. CHEM LETT 2011. [DOI: 10.1246/cl.2011.1074] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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17
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Synthesis of a novel zwitterionic biodegradable poly (α,β-L-aspartic acid) derivative with some L-histidine side-residues and its resistance to non-specific protein adsorption. Colloids Surf B Biointerfaces 2011; 86:237-41. [PMID: 21536417 DOI: 10.1016/j.colsurfb.2011.04.010] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2011] [Revised: 04/05/2011] [Accepted: 04/06/2011] [Indexed: 11/22/2022]
Abstract
A novel zwitterionic polypeptide derivative, denoted as His-PAsp/PAsp, was successfully synthesized by amidation of Poly (α,β-L-aspartic acid) with L-histidine methyl ester. Turbidity, zeta potential and ¹H NMR measurements were used to study the aggregation behaviors of His-PAsp/PAsp under different pH values. The modified polypeptide derivative composed of electro-negatively carboxylic and electro-positively imidazole residues randomly so as to bear opposite charges at pH values above or below the isoelectric point. When the zwitterionic polypeptide was coated on silicon wafer as a model substrate material, the absorption resistance of fibrinogen, a blood protein resulting in the blood coagulation cascade, on the coated surface was measured. It was found that the adsorption amount of fibrinogen on the polypeptide-coated surface depended on the dose of the polypeptide on silicon wafer. Obvious resistance of the fibrinogen adsorption on the polypeptide-coated surface was observed. Since its good biodegradability and superior anti-protein-fouling property, this pH-responsive zwitterionic polypeptide is a promising candidate for surface modification in many biomedical applications, including medical implants, drug delivery carriers, and biosensors.
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18
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Synthesis of poly(aspartimide)-based bio-glycoconjugates. Carbohydr Res 2010; 345:33-40. [DOI: 10.1016/j.carres.2009.08.034] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2009] [Revised: 08/21/2009] [Accepted: 08/25/2009] [Indexed: 11/20/2022]
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