101
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102
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Huang J, Zajforoushan Moghaddam S, Maroni P, Thormann E. Swelling Behavior, Interaction, and Electrostatic Properties of Chitosan/Alginate Dialdehyde Multilayer Films with Different Outermost Layer. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:3782-3791. [PMID: 32212609 DOI: 10.1021/acs.langmuir.0c00330] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
In this study, self-cross-linked chitosan/alginate dialdehyde multilayer films, capped with either alginate dialdehyde (6 layers) or chitosan (7 layers), were fabricated using the layer-by-layer method. The disruption of the electrostatic equilibrium when exposing the fabricated layers to acidic and alkaline conditions causes swelling within the film and independently in the outermost layer, showing dependence on the ionic strength. Spectroscopic ellipsometry and quartz crystal microbalance with dissipation monitoring were employed to examine the swelling behavior. Atomic force microscopy colloidal probe measurements were conducted to assess the surface forces between the multilayer films at different pH and ionic strengths. Finally, the electrostatic properties of the multilayer films were examined at different pH and ionic strengths using zeta potential measurements. The results suggest that stimuli-responsiveness and overall swelling behavior of the polysaccharide multilayer films significantly depend on the outermost layer, an effect that should expectedly become more pronounced the thinner the film becomes.
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Affiliation(s)
- Junhao Huang
- Department of Chemistry, Technical University of Denmark, 2800 Kongens Lyngby, Denmark
| | | | - Plinio Maroni
- Department of Inorganic and Analytical Chemistry, University of Geneva, Sciences II, 30 Quai Ernest-Ansermet, 1205 Geneva, Switzerland
| | - Esben Thormann
- Department of Chemistry, Technical University of Denmark, 2800 Kongens Lyngby, Denmark
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103
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Gorur YC, Larsson PA, Wågberg L. Self-Fibrillating Cellulose Fibers: Rapid In Situ Nanofibrillation to Prepare Strong, Transparent, and Gas Barrier Nanopapers. Biomacromolecules 2020; 21:1480-1488. [PMID: 32167304 PMCID: PMC7307884 DOI: 10.1021/acs.biomac.0c00040] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
![]()
Cellulose nanofibrils
(CNFs) prepared from wood biomass are promising
candidates to replace oil-based materials in, for example, packaging
applications. However, CNFs’ affinity for water combined with
their small size leads to very slow and energy-demanding processes
for handling and removal of water. To a large extent, this is the
major roadblock that prevents a feasible production of dry CNF-based
materials on an industrial scale. In this work, self-fibrillating
fibers (SFFs) from wood, where the fibrils can be liberated by external
stimuli, were prepared via sequential TEMPO and periodate oxidation
reactions. Papers made from these modified fibers using conventional
laboratory papermaking methods were then in situ nanofibrillated via
a modest pH increase. With a dewatering time of less than 10 s for
a 3 g/L dispersion, SFFs represent a major improvement over conventional
CNF nanopapers that take approximately 6 h to dewater. Moreover, 100
g/m2 nanopapers obtained through in situ fibrillation exhibited
comparable, if not superior, properties to those reported for conventionally
made CNF films. A tensile strength of 184 MPa, a Young’s modulus
of 5.2 GPa, a strain at break of 4.6%, 90% optical transmittance,
and an oxygen permeability of 0.7 cm3 μm m–2 d–1 kPa–1 at 50% RH were measured
for SFF nanopapers. Furthermore, in situ nanofibrillation of the SFFs
can also be achieved from already dried papers, facilitating numerous
possibilities in terms of logistics and handling for an industrial
scale-up and transportation of nanomaterials. Overall, stimuli-induced
SFFs indeed enable a rapid production of strong, transparent, gas
barrier nanopapers, which likely can be industrially scaled up and
eventually compete with the oil-based plastics in the market for packaging
materials.
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Affiliation(s)
- Yunus Can Gorur
- Fibre and Polymer Technology, KTH Royal Institute of Technology, SE-10044 Stockholm, Sweden
| | - Per A Larsson
- Fibre and Polymer Technology, KTH Royal Institute of Technology, SE-10044 Stockholm, Sweden
| | - Lars Wågberg
- Fibre and Polymer Technology, KTH Royal Institute of Technology, SE-10044 Stockholm, Sweden
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104
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Wang Q, Qi PX, Huang SX, Hou DZ, Xu XD, Ci LY, Chen S. Quantitative analysis of straight-chain/branched-chain Ratio During Enzymatic Synthesis of Dextran Based on Periodate Oxidation. Biochem Biophys Res Commun 2020; 523:573-579. [DOI: 10.1016/j.bbrc.2020.01.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Accepted: 01/01/2020] [Indexed: 12/26/2022]
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105
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Lv H, Cui S, Zhang H, Pei X, Gao Z, Hu J, Zhou Y, Liu Y. Crosslinked starch nanofibers with high mechanical strength and excellent water resistance for biomedical applications. Biomed Mater 2020; 15:025007. [DOI: 10.1088/1748-605x/ab509f] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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106
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Marasca E, Boulos S, Nyström L. Bile acid-retention by native and modified oat and barley β-glucan. Carbohydr Polym 2020; 236:116034. [PMID: 32172850 DOI: 10.1016/j.carbpol.2020.116034] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Revised: 01/15/2020] [Accepted: 02/17/2020] [Indexed: 10/25/2022]
Abstract
Foods rich in cereal β-glucan are efficient dietary tools to help reduce serum cholesterol levels and hence the risk of cardiovascular diseases. However, β-glucan undergoes various reactions during food processing, which alter its viscous properties and interactions with components of the gastrointestinal tract. It has been proposed in the literature that oxidation and partial hydrolysis increase β-glucan's bile acid-binding activity, and therefore its effectiveness in lowering cholesterol. Here, the passage kinetics of a bile salt mix across a dialysis membrane was studied with or without oat and barley β-glucan extracts, native or modified (partial hydrolysis and oxidations by sodium periodate or TEMPO (2,2,6,6-tetramethylpiperidine-1-oxyl)). Bile acid-retention turned out to be purely a function of viscosity, with the most viscous native extracts exhibiting the strongest retardation of bile acid permeation. Opposite of what was suggested in the literature, oxidation and molecular weight reduction do not seem to increase the bile acid-binding capability of β-glucan.
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Affiliation(s)
- Elena Marasca
- Institute of Food, Nutrition and Health, ETH Zurich, 8092, Zurich, Switzerland
| | - Samy Boulos
- Institute of Food, Nutrition and Health, ETH Zurich, 8092, Zurich, Switzerland
| | - Laura Nyström
- Institute of Food, Nutrition and Health, ETH Zurich, 8092, Zurich, Switzerland.
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107
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Kim S, Jeong D, Lee H, Kim D, Jung S. Succinoglycan dialdehyde-reinforced gelatin hydrogels with toughness and thermal stability. Int J Biol Macromol 2020; 149:281-289. [PMID: 31982524 DOI: 10.1016/j.ijbiomac.2020.01.228] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Revised: 01/22/2020] [Accepted: 01/22/2020] [Indexed: 02/06/2023]
Abstract
Pure gelatin hydrogel (PG) has limited practical applications due to their thermal instability and unfavorable mechanical properties. To overcome these limitations, dually crosslinked hydrogels were developed by imparting chemical crosslinking to existing physically crosslinked gelatin hydrogel networks using succinoglycan dialdehyde (SGDA) as a macromolecular crosslinker. SGDA-reinforced gelatin hydrogels (SGDA/Gels) displayed an 11 times higher compressive stress under identical deformation strain and a 1040% improvement in storage modulus (G') than PG. In addition, chemical crosslinking induced by SGDA increased the thermal stability of SGDA/Gels, such that they did not decompose at 60 °C, as confirmed by oscillatory temperature ramp experiments. The newly synthesized SGDA/Gels with reinforced networks and thermal stability exhibit potential for long-term use as controlled drug delivery carriers and 3D cell culture scaffolds for tissue engineering.
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Affiliation(s)
- Seonmok Kim
- Department of Bioscience and Biotechnology, Microbial Carbohydrate Resource Bank (MCRB), Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, South Korea
| | - Daham Jeong
- Department of Bioscience and Biotechnology, Microbial Carbohydrate Resource Bank (MCRB), Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, South Korea; Institute for Ubiquitous Information Technology and Applications (UBITA), Center for Biotechnology Research in UBITA (CBRU), Konkuk University, Seoul 05029, South Korea
| | - Hyojeong Lee
- Department of Bioscience and Biotechnology, Microbial Carbohydrate Resource Bank (MCRB), Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, South Korea
| | - Dajung Kim
- Department of Bioscience and Biotechnology, Microbial Carbohydrate Resource Bank (MCRB), Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, South Korea
| | - Seunho Jung
- Department of Bioscience and Biotechnology, Microbial Carbohydrate Resource Bank (MCRB), Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, South Korea; Institute for Ubiquitous Information Technology and Applications (UBITA), Center for Biotechnology Research in UBITA (CBRU), Konkuk University, Seoul 05029, South Korea.
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108
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Liu J, Li J, Yu F, Zhao YX, Mo XM, Pan JF. In situ forming hydrogel of natural polysaccharides through Schiff base reaction for soft tissue adhesive and hemostasis. Int J Biol Macromol 2020; 147:653-666. [PMID: 31923505 DOI: 10.1016/j.ijbiomac.2020.01.005] [Citation(s) in RCA: 75] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Revised: 12/21/2019] [Accepted: 01/02/2020] [Indexed: 01/14/2023]
Abstract
In this study, a novel injectable hydrogel with biocompatibility and biodegradability through Schiff base reaction was prepared for soft tissue adhesive and hemostasis. Aldehyde hydroxyethyl starch (AHES) was prepared by oxidizing hydroxyethyl starch to get aldehyde groups. Amino carboxymethyl chitosan (ACC) was prepared by grafting ethylenediamine onto carboxymethyl chitosan to get more amino groups. Two-component AHES/ACC hydrogel was formed through Schiff base reaction between aldehyde and amino groups. By changing the reaction conditions various contents of aldehyde and amino group were achieved. The properties of AHES/ACC hydrogel were tunable including gelation time, swelling ratio, degradation and mechanical tensile by varying the content of aldehyde and amino groups. Then biocompatibility measurements showed that AHES/ACC hydrogels supported cell viability and proliferation in vitro and exhibited good biodegradability and biocompatibility in vivo. AHES/ACC hydrogel also had effective hemostatic ability. Thus, this study provides a strategy for the design and fabrication of fast in situ forming hydrogels. Through Schiff base reaction in situ forming hydrogel derived from natural polysaccharides can be modulated and prepared for soft tissue adhesive, hemostasis or other biomedical applications in future.
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Affiliation(s)
- Jia Liu
- Department of Orthopedics, Shanghai Tenth People's Hospital affiliated to Tongji University, 301 Yanchang Road, Shanghai 200072, China; Department of Orthopedics, Shidong Hospital of Yangpu District, 999 Shiguang Road, Shanghai 200438, China
| | - Jun Li
- Department of Orthopedics, Shanghai Tenth People's Hospital affiliated to Tongji University, 301 Yanchang Road, Shanghai 200072, China
| | - Fan Yu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, 2999 North Renmin Road, Shanghai 201620, China
| | - Ya-Xin Zhao
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, 2999 North Renmin Road, Shanghai 201620, China
| | - Xiu-Mei Mo
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, 2999 North Renmin Road, Shanghai 201620, China.
| | - Jian-Feng Pan
- Department of Orthopedics, Shanghai Tenth People's Hospital affiliated to Tongji University, 301 Yanchang Road, Shanghai 200072, China.
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109
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Liu B, Shang ZZ, Li QM, Zha XQ, Wu DL, Yu NJ, Han L, Peng DY, Luo JP. Structural features and anti-gastric cancer activity of polysaccharides from stem, root, leaf and flower of cultivated Dendrobium huoshanense. Int J Biol Macromol 2020; 143:651-664. [DOI: 10.1016/j.ijbiomac.2019.12.041] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 12/02/2019] [Accepted: 12/05/2019] [Indexed: 01/24/2023]
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110
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Mendoza DJ, Browne C, Raghuwanshi VS, Simon GP, Garnier G. One-shot TEMPO-periodate oxidation of native cellulose. Carbohydr Polym 2019; 226:115292. [DOI: 10.1016/j.carbpol.2019.115292] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Revised: 08/28/2019] [Accepted: 09/03/2019] [Indexed: 10/26/2022]
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111
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Banks SR, Enck K, Wright M, Opara EC, Welker ME. Chemical Modification of Alginate for Controlled Oral Drug Delivery. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:10481-10488. [PMID: 31433940 PMCID: PMC6905053 DOI: 10.1021/acs.jafc.9b01911] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Here, we report two methods that chemically modify alginate to achieve neutral-basic pH sensitivity of the resultant hydrogel. The first method involves direct amide bond formation between alginate and 4-(2-aminoethyl)benzoic acid. The second method that arose out of the desire to achieve better control of the degradation rate of the alginate hydrogel involves reductive amination of oxidized alginate. The products of both methods result in a hydrogel vehicle for targeted delivery of encapsulated payload under physiological conditions in the gastrointestinal tract. Two-dimensional diffusion-ordered spectroscopy and internal and coaxial external nuclear magnetic resonance standards were used to establish chemical bonding and percent incorporation of the modifying groups into the alginate polymer. The hydrogel made with alginate modified by each method was found to be completely stable under acidic pH conditions while disintegrating within minutes to hours in neutral-basic pH conditions. We found that, while alginate oxidation did not affect the β-d-mannuronate/α-l-guluronate ratio of alginate, the rate of disintegration of the hydrogel made with oxidized alginate was dependent upon the degree of oxidation.
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Affiliation(s)
- Surya R Banks
- Department of Chemistry , Wake Forest University , 455 Vine Street , Winston-Salem , North Carolina 27101 , United States
| | - Kevin Enck
- Wake Forest Institute for Regenerative Medicine , Wake Forest School of Medicine , Medical Center Boulevard Winston-Salem , North Carolina 27101 , United States
- Virginia Tech-Wake Forest School of Biomedical Engineering and Sciences , Wake Forest School of Medicine , Medical Center Boulevard , Winston-Salem , North Carolina 27157 , United States
| | - Marcus Wright
- Department of Chemistry , Wake Forest University , 455 Vine Street , Winston-Salem , North Carolina 27101 , United States
| | - Emmanuel C Opara
- Wake Forest Institute for Regenerative Medicine , Wake Forest School of Medicine , Medical Center Boulevard Winston-Salem , North Carolina 27101 , United States
- Virginia Tech-Wake Forest School of Biomedical Engineering and Sciences , Wake Forest School of Medicine , Medical Center Boulevard , Winston-Salem , North Carolina 27157 , United States
| | - Mark E Welker
- Department of Chemistry , Wake Forest University , 455 Vine Street , Winston-Salem , North Carolina 27101 , United States
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112
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Afinjuomo F, Fouladian P, Parikh A, Barclay TG, Song Y, Garg S. Preparation and Characterization of Oxidized Inulin Hydrogel for Controlled Drug Delivery. Pharmaceutics 2019; 11:E356. [PMID: 31336580 PMCID: PMC6680939 DOI: 10.3390/pharmaceutics11070356] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Revised: 07/15/2019] [Accepted: 07/17/2019] [Indexed: 02/07/2023] Open
Abstract
Inulin-based hydrogels are useful carriers for the delivery of drugs in the colon-targeted system and in other biomedical applications. In this project, inulin hydrogels were fabricated by crosslinking oxidized inulin with adipic acid dihydrazide (AAD) without the use of a catalyst or initiator. The physicochemical properties of the obtained hydrogels were further characterized using different techniques, such as swelling experiments, in vitro drug release, degradation, and biocompatibility tests. The crosslinking was confirmed with Fourier transform infrared spectroscopy (FTIR), thermal gravimetric analysis (TGA), and differential scanning calorimetry (DSC). In vitro releases of 5-fluorouracil (5FU) from the various inulin hydrogels was enhanced in acidic conditions (pH 5) compared with physiological pH (pH 7.4). In addition, blank gels did not show any appreciable cytotoxicity, whereas 5FU-loaded hydrogels demonstrated efficacy against HCT116 colon cancer cells, which further confirms the potential use of these delivery platforms for direct targeting of 5-FU to the colon.
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Affiliation(s)
- Franklin Afinjuomo
- School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, South Australia 5001, Australia
| | - Paris Fouladian
- School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, South Australia 5001, Australia
| | - Ankit Parikh
- School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, South Australia 5001, Australia
| | - Thomas G Barclay
- School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, South Australia 5001, Australia
| | - Yunmei Song
- School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, South Australia 5001, Australia
| | - Sanjay Garg
- School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, South Australia 5001, Australia.
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113
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Gao J, Chen L, Wu Q, Li H, Dong S, Qin P, Yang F, Zhao L. Preparation and chromatographic performance of a multifunctional immobilized chiral stationary phase based on dialdehyde microcrystalline cellulose derivatives. Chirality 2019; 31:669-681. [PMID: 31318106 DOI: 10.1002/chir.23082] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Revised: 05/12/2019] [Accepted: 05/13/2019] [Indexed: 01/28/2023]
Abstract
A novel high-performance liquid chromatography (HPLC) multifunctional immobilized chiral stationary phase was prepared by bonding dialdehyde microcrystalline cellulose to aminosilica via Schiff base reaction and then derivatized with 3,5-dimethylphenyl isocyanate. The HPLC multifunctional immobilized chiral stationary phase could not only achieve chiral separation but also achieve achiral separation. Chiral separation evaluation showed that 1-(1-naphthyl)ethanol and mandelonitrile got separation in normal phase (NP) mode. Ranolazine, benzoin ethyl ether, metalaxyl, and diclofop were successfully separated in reversed phase (RP) mode. Aromatic compounds such as polycyclic aromatic hydrocarbons (PAHs), anilines, and aromatic acids were selected as analytes to investigate the achiral separation performance of the multifunctional immobilized chiral stationary phase in NP and RP modes. The achiral separation evaluation showed that six PAHs could get good separation within 10 minutes in NP mode. Four aromatic acids were well separated in RP mode. The retention mechanism of aromatic compounds on the stationary phase was discussed, founding that π-π interaction, π-π electron-donor-acceptor (EDA) interaction, and hydrogen bonding interaction played important roles during the achiral separation process. This multifunctional immobilized chiral stationary phase had the advantages of simple bonding steps, short reaction time, and no need for space arm.
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Affiliation(s)
- Jie Gao
- Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Lixiao Chen
- Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Qi Wu
- Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Hui Li
- Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, China
| | - Shuqing Dong
- Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, China
| | - Peng Qin
- Lanzhou Petrochemical Research Center, Lanzhou, China
| | - Fang Yang
- Lanzhou Petrochemical Research Center, Lanzhou, China
| | - Liang Zhao
- Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, China
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114
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Jia Y, Li J. Molecular Assemblies of Biomimetic Microcapsules. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:8557-8564. [PMID: 30759988 DOI: 10.1021/acs.langmuir.8b04319] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Layer-by-layer (LbL) assembly is a most commonly used method to prepare various microcapsules based on the electrostatic interactions, hydrogen bonding, covalent bonding, and so on. Among these interactions, Schiff base bond formed in covalent assembly not only has an advantage in stability, but also enables the assembled microcapsules with autofluorescence and pH sensitivity. In this Article, we will mainly describe the construction of biomimetic microcapsules through Schiff base mediated LbL assembly. The structures and properties of the assembled microcapsules are introduced and their applications as drug carriers are highlighted.
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Affiliation(s)
- Yi Jia
- Beijing National Laboratory for Molecular Sciences, CAS Key Lab of Colloid, Interface and Chemical Thermodynamics , Institute of Chemistry, Chinese Academy of Sciences , Beijing , 100190 , China
| | - Junbai Li
- Beijing National Laboratory for Molecular Sciences, CAS Key Lab of Colloid, Interface and Chemical Thermodynamics , Institute of Chemistry, Chinese Academy of Sciences , Beijing , 100190 , China
- University of Chinese Academy of Sciences , Beijing , 100049 , China
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115
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Omtvedt LA, Dalheim MØ, Nielsen TT, Larsen KL, Strand BL, Aachmann FL. Efficient Grafting of Cyclodextrin to Alginate and Performance of the Hydrogel for Release of Model Drug. Sci Rep 2019; 9:9325. [PMID: 31249333 PMCID: PMC6597533 DOI: 10.1038/s41598-019-45761-4] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Accepted: 06/05/2019] [Indexed: 01/28/2023] Open
Abstract
Controlling the rate of release of molecules from a hydrogel is of high interest for various drug delivery systems and medical devices. A strategy to alter the release profiles of soluble and poorly soluble active ingredients from hydrogels can be to combine the hydrogel forming ability of alginate with the inclusion forming ability of cyclodextrins (CyD). Here, β-CyD was grafted to alginate in a three-step synthesis using periodate oxidation, reductive amination and copper(I)-catalyzed azide-alkyne cycloaddition. A grafting degree of 4.7% mol β-CyD/mol sugar residues was obtained. The grafting degree was controlled by varying the reaction parameters where the amount of linker used in reductive amination was especially influential. Ca-alginate gel beads grafted with β-CyD showed increased uptake of the model molecule methyl orange. Release experiments showed that the grafted material had a prolonged release of methyl orange and an increased total amount of released methyl orange. These results show that the β-CyD grafted alginate is still able to form a hydrogel while the grafted cyclodextrins retain their ability to form inclusion complex with methyl orange. Further testing should be done with this system to investigate capability for drug delivery applications.
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Affiliation(s)
- Line Aa Omtvedt
- Norwegian Biopolymer Laboratory (NOBIPOL), Department of Biotechnology and Food Science, NTNU - Norwegian University of Science and Technology, N-7491, Trondheim, Norway
| | - Marianne Ø Dalheim
- Norwegian Biopolymer Laboratory (NOBIPOL), Department of Biotechnology and Food Science, NTNU - Norwegian University of Science and Technology, N-7491, Trondheim, Norway
| | - Thorbjørn T Nielsen
- Department of Chemistry and Bioscience, Aalborg University (AAU), 9220, Aalborg, Denmark
| | - Kim L Larsen
- Department of Chemistry and Bioscience, Aalborg University (AAU), 9220, Aalborg, Denmark
| | - Berit L Strand
- Norwegian Biopolymer Laboratory (NOBIPOL), Department of Biotechnology and Food Science, NTNU - Norwegian University of Science and Technology, N-7491, Trondheim, Norway
| | - Finn L Aachmann
- Norwegian Biopolymer Laboratory (NOBIPOL), Department of Biotechnology and Food Science, NTNU - Norwegian University of Science and Technology, N-7491, Trondheim, Norway.
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116
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Hayes AJ, Melrose J. Glycosaminoglycan and Proteoglycan Biotherapeutics in Articular Cartilage Protection and Repair Strategies: Novel Approaches to Visco‐supplementation in Orthobiologics. ADVANCED THERAPEUTICS 2019. [DOI: 10.1002/adtp.201900034] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Anthony J. Hayes
- Bioimaging Research HubCardiff School of BiosciencesCardiff University Cardiff CF10 3AX Wales UK
| | - James Melrose
- Graduate School of Biomedical EngineeringUNSW Sydney Sydney NSW 2052 Australia
- Raymond Purves Bone and Joint Research LaboratoriesKolling Institute of Medical ResearchRoyal North Shore Hospital and The Faculty of Medicine and HealthUniversity of Sydney St. Leonards NSW 2065 Australia
- Sydney Medical SchoolNorthernRoyal North Shore HospitalSydney University St. Leonards NSW 2065 Australia
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117
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Synthesis and characterization of dialdehyde cellulose nanofibers from O. sativa husks. SN APPLIED SCIENCES 2019. [DOI: 10.1007/s42452-019-0769-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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118
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Yan T, Li C, Ouyang Q, Zhang D, Zhong Q, Li P, Li S, Yang Z, Wang T, Zhao Q. Synthesis of gentamicin-grafted-chitosan with improved solubility and antibacterial activity. REACT FUNCT POLYM 2019. [DOI: 10.1016/j.reactfunctpolym.2019.01.013] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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119
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Duan B, Zou S, Sun Y, Xu X. Nanoplatform Constructed from a β-Glucan and Polydeoxyadenylic Acid for Cancer Chemotherapy and Imaging. Biomacromolecules 2019; 20:1567-1577. [PMID: 30799607 DOI: 10.1021/acs.biomac.8b01780] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A nanoplatform carrying doxorubicin (Dox) for cancer therapy and a dye for imaging was developed based on a natural triple helix β-glucan (t-LNT) and polydeoxyadenylic acid (poly(dA)). The t-LNT-Dox conjugates were prepared through Schiff-base reaction between the aldehyde group in the oxidized t-LNT and the amino group of Dox, the single chains (s-LNT-Dox) of which interacted with the poly(dA)-dye to form a composite s-LNT-Dox/poly(dA)-dye through hydrogen bonding between s-LNT and poly(dA). t-LNT-Dox was confirmed to acid-responsively release Dox in vitro, showing enhanced cytotoxicity against HeLa cancer cells with time. It was confirmed that Dox and the dye could be simultaneously delivered into HeLa cells or the tumors with a prolonged duration time. Furthermore, LNT-Dox conjugates effectively inhibited tumor growth and decreased adverse effects of the free Dox in vivo. Hence, this work develops a new strategy to fabricate the nanoplatform for therapy and imaging using a natural polysaccharide.
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Affiliation(s)
- Bingchao Duan
- College of Chemistry and Molecular Sciences , Wuhan University , Wuhan 430072 , China
| | - Siwei Zou
- College of Chemistry and Molecular Sciences , Wuhan University , Wuhan 430072 , China
| | - Ying Sun
- College of Chemistry and Molecular Sciences , Wuhan University , Wuhan 430072 , China
| | - Xiaojuan Xu
- College of Chemistry and Molecular Sciences , Wuhan University , Wuhan 430072 , China
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120
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Bam P, Bhatta A, Krishnamoorthy G. Design of biostable scaffold based on collagen crosslinked by dialdehyde chitosan with presence of gallic acid. Int J Biol Macromol 2019; 130:836-844. [PMID: 30844463 DOI: 10.1016/j.ijbiomac.2019.03.017] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Revised: 02/18/2019] [Accepted: 03/02/2019] [Indexed: 10/27/2022]
Abstract
In this study, we have prepared the biostable collagen scaffold which is crosslinked by dialdehyde chitosan (DAC) with presence of Gallic acid (GA) and characterized its physico-chemical, biostable and biocompatible properties. The digital photographic and scanning electron microscopic (SEM) images of the prepared collagen scaffold is exposed well with properly oriented interconnected porous natured structure. The appearance of diffraction peaks showed slightly crystalline characteristic when compared to others. The differential scanning calorimetric (DSC) and thermogravimetric analysis (TGA) measurements indicates well significantly increased denaturation temperature (TD) and decreased decomposition rate. FT-IR result suggests the structural integrity of collagen which favours the molecular stability. The dialdehyde groups from DAC crosslinked with collagen functional groups that increase the molecular crosslinking owing to the large number of amino groups in its molecular chain. This scaffold exhibited 87% resistance against collagenolytic degradation by collagenase. The results showed that the improved biostability which prevents the free access of the collagenase to binds with the collagen triple helical chains. This scaffold confirm high biocompatibilities; enhanced cell proliferation and adhesions properties. This results gains new insight into the collagen scaffold to improves the biostability. This could be suitable method to preparation of collagenous biomaterials for tissue engineering applications.
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Affiliation(s)
- Pemo Bam
- Natural Products Chemistry Groups, Chemical Sciences and Technology Division, CSIR-North East Institute of Science & Technology, Jorhat 785 006, Assam, India
| | - Anindita Bhatta
- Natural Products Chemistry Groups, Chemical Sciences and Technology Division, CSIR-North East Institute of Science & Technology, Jorhat 785 006, Assam, India
| | - Ganesan Krishnamoorthy
- Natural Products Chemistry Groups, Chemical Sciences and Technology Division, CSIR-North East Institute of Science & Technology, Jorhat 785 006, Assam, India.
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121
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Post-synthesis modification of thermo-responsive hydrogels: Hydrazone crosslinking of α-oxoaldehyde obtained from NIPAm-based polymers. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2019.01.028] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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122
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Aumala V, Mollerup F, Jurak E, Blume F, Karppi J, Koistinen AE, Schuiten E, Voß M, Bornscheuer U, Deska J, Master ER. Biocatalytic Production of Amino Carbohydrates through Oxidoreductase and Transaminase Cascades. CHEMSUSCHEM 2019; 12:848-857. [PMID: 30589228 PMCID: PMC6519198 DOI: 10.1002/cssc.201802580] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Revised: 12/23/2018] [Indexed: 06/09/2023]
Abstract
Plant-derived carbohydrates are an abundant renewable resource. Transformation of carbohydrates into new products, including amine-functionalized building blocks for biomaterials applications, can lower reliance on fossil resources. Herein, biocatalytic production routes to amino carbohydrates, including oligosaccharides, are demonstrated. In each case, two-step biocatalysis was performed to functionalize d-galactose-containing carbohydrates by employing the galactose oxidase from Fusarium graminearum or a pyranose dehydrogenase from Agaricus bisporus followed by the ω-transaminase from Chromobacterium violaceum (Cvi-ω-TA). Formation of 6-amino-6-deoxy-d-galactose, 2-amino-2-deoxy-d-galactose, and 2-amino-2-deoxy-6-aldo-d-galactose was confirmed by mass spectrometry. The activity of Cvi-ω-TA was highest towards 6-aldo-d-galactose, for which the highest yield of 6-amino-6-deoxy-d-galactose (67 %) was achieved in reactions permitting simultaneous oxidation of d-galactose and transamination of the resulting 6-aldo-d-galactose.
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Affiliation(s)
- Ville Aumala
- Department of Bioproducts and BiosystemsAalto UniversityKemistintie 102150EspooFinland
| | - Filip Mollerup
- Department of Bioproducts and BiosystemsAalto UniversityKemistintie 102150EspooFinland
| | - Edita Jurak
- Department of Aquatic Biotechnology and Bioproduct EngineeringUniversity of GroningenNijenborgh 49747AGGroningenThe Netherlands
| | - Fabian Blume
- Department of Chemistry and Materials ScienceAalto UniversityKemistintie 102150EspooFinland
| | - Johanna Karppi
- Department of Bioproducts and BiosystemsAalto UniversityKemistintie 102150EspooFinland
| | - Antti E. Koistinen
- Department of Bioproducts and BiosystemsAalto UniversityKemistintie 102150EspooFinland
| | - Eva Schuiten
- Department of Biotechnology and Enzyme CatalysisGreifswald UniversityFelix-Hausdorff-Straße 417487GreifswaldGermany
| | - Moritz Voß
- Department of Biotechnology and Enzyme CatalysisGreifswald UniversityFelix-Hausdorff-Straße 417487GreifswaldGermany
| | - Uwe Bornscheuer
- Department of Biotechnology and Enzyme CatalysisGreifswald UniversityFelix-Hausdorff-Straße 417487GreifswaldGermany
| | - Jan Deska
- Department of Chemistry and Materials ScienceAalto UniversityKemistintie 102150EspooFinland
| | - Emma R. Master
- Department of Bioproducts and BiosystemsAalto UniversityKemistintie 102150EspooFinland
- Department of Chemical Engineering and Applied ChemistryUniversity of Toronto200 College StreetTorontoOntarioM5S 3E5Canada
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123
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Huang J, Zajforoushan Moghaddam S, Thormann E. Structural Investigation of a Self-Cross-Linked Chitosan/Alginate Dialdehyde Multilayered Film with in Situ QCM-D and Spectroscopic Ellipsometry. ACS OMEGA 2019; 4:2019-2029. [PMID: 31459453 PMCID: PMC6648685 DOI: 10.1021/acsomega.8b03145] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2018] [Accepted: 01/10/2019] [Indexed: 05/30/2023]
Abstract
A chitosan/alginate dialdehyde multilayered film was fabricated using the layer-by-layer assembly method. Besides electrostatic interaction that promotes alternate adsorption of the oppositely charged polyelectrolytes, the Schiff base reaction between the amine groups on chitosan and the aldehyde groups on alginate dialdehyde provides a covalently cross-linked film, which after reduction by sodium cyanoborohydride is stable under both acidic and alkaline conditions. Moreover, the cross-linked film is responsive to changes in pH and addition of multivalent salts. The structural properties of the multilayered film such as thickness, refractive index, and water content were examined using simultaneous quartz crystal microbalance with dissipation monitoring and spectroscopic ellipsometry.
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Affiliation(s)
- Junhao Huang
- Department of Chemistry, Technical University of Denmark, Kemitorvet 206, 2800 Kgs. Lyngby, Denmark
| | | | - Esben Thormann
- Department of Chemistry, Technical University of Denmark, Kemitorvet 206, 2800 Kgs. Lyngby, Denmark
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124
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Lu Y, Zhao X, Fang S. Characterization, Antimicrobial Properties and Coatings Application of Gellan Gum Oxidized with Hydrogen Peroxide. Foods 2019; 8:E31. [PMID: 30658407 PMCID: PMC6352162 DOI: 10.3390/foods8010031] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 01/14/2019] [Accepted: 01/14/2019] [Indexed: 12/14/2022] Open
Abstract
The effect of hydrogen peroxide (H₂O₂) oxidation on the physicochemical, gelation and antimicrobial properties of gellan gum was studied. The oxidized gellan gum (OGG) was characterized by measuring the carboxyl/carbonyl group contents, Fourier transform infrared spectroscopy (FTIR) and proton nuclear magnetic resonance (¹H-NMR) spectroscopy. The H₂O₂ oxidation resulted in a large increase in the carboxyl groups in gellan gum. The OGG lost gelation ability by oxidation even in the presence of metal ions. The antimicrobial activities of the OGG against Gram-positive bacteria (Staphylococcus aureus), Gram-negative bacteria (Escherichia coli), and fungal (Aspergillus niger) were tested. The OGG could inhibit the growth of both bacteria and fungal, and the activity was improved with an increase in the oxidation level. Finally, the application of the OGG as an active coatings material to extend the storage of apples was tested.
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Affiliation(s)
- Yushuang Lu
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Xuezheng Street No. 18, Hangzhou 310018, China.
| | - Xiaojian Zhao
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Xuezheng Street No. 18, Hangzhou 310018, China.
| | - Sheng Fang
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Xuezheng Street No. 18, Hangzhou 310018, China.
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125
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Silva TME, Borges LL, Souza ERBE, Caramori SS. Synthesis of immobilized biocatalysts for wastewater decontamination. POLIMEROS 2019. [DOI: 10.1590/0104-1428.08918] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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126
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Ding W, Wang YN, Zhou J, Shi B. Effect of structure features of polysaccharides on properties of dialdehyde polysaccharide tanning agent. Carbohydr Polym 2018; 201:549-556. [DOI: 10.1016/j.carbpol.2018.08.111] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Revised: 08/25/2018] [Accepted: 08/25/2018] [Indexed: 10/28/2022]
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127
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Börjesson M, Larsson A, Westman G, Ström A. Periodate oxidation of xylan-based hemicelluloses and its effect on their thermal properties. Carbohydr Polym 2018; 202:280-287. [DOI: 10.1016/j.carbpol.2018.08.110] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Revised: 08/02/2018] [Accepted: 08/25/2018] [Indexed: 01/23/2023]
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128
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Córdova BM, Jacinto CR, Alarcón H, Mejía IM, López RC, de Oliveira Silva D, Cavalheiro ET, Venâncio T, Dávalos JZ, Valderrama A. Chemical modification of sodium alginate with thiosemicarbazide for the removal of Pb(II) and Cd(II) from aqueous solutions. Int J Biol Macromol 2018; 120:2259-2270. [DOI: 10.1016/j.ijbiomac.2018.08.095] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Revised: 07/21/2018] [Accepted: 08/20/2018] [Indexed: 01/22/2023]
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129
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Ding W, Yi Y, Wang Y, Zhou J, Shi B. Preparation of a Highly Effective Organic Tanning Agent with Wide Molecular Weight Distribution from Bio‐Renewable Sodium Alginate. ChemistrySelect 2018. [DOI: 10.1002/slct.201802540] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Wei Ding
- National Engineering Laboratory for Clean Technology of Leather ManufactureSichuan University Chengdu 610065 P.R. China
- Guangdong Dymatic Fine Chemicals Inc., Foshan 528305 P. R. China
| | - Yudan Yi
- National Engineering Laboratory for Clean Technology of Leather ManufactureSichuan University Chengdu 610065 P.R. China
| | - Ya‐nan Wang
- National Engineering Laboratory for Clean Technology of Leather ManufactureSichuan University Chengdu 610065 P.R. China
| | - Jianfei Zhou
- National Engineering Laboratory for Clean Technology of Leather ManufactureSichuan University Chengdu 610065 P.R. China
| | - Bi Shi
- National Engineering Laboratory for Clean Technology of Leather ManufactureSichuan University Chengdu 610065 P.R. China
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130
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Smith J, Mittermayr S, Váradi C, Bones J. Quantitative glycomics using liquid phase separations coupled to mass spectrometry. Analyst 2018; 142:700-720. [PMID: 28170017 DOI: 10.1039/c6an02715f] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Post-translational modification of proteins by the attachment of glycans is governed by a variety of highly specific enzymes and is associated with fundamental impacts on the parent protein's physical, chemical and biological properties. The inherent connection between cellular physiology and specific glycosylation patterns has been shown to offer potential for diagnostic and prognostic monitoring of altered glycosylation in the disease state. Conversely, glycoprotein based biopharmaceuticals have emerged as dominant therapeutic strategies in the treatment of intricate diseases. Glycosylation present on these biopharmaceuticals represents a major critical quality attribute with impacts on both pharmacokinetics and pharmacodynamics. The structural variety of glycans, based upon their non-template driven assembly, poses a significant analytical challenge for both qualitative and quantitative analysis. Labile monosaccharide constituents, isomeric species and often low sample availability from biological sources necessitates meticulous sample handling, ultra-high-resolution analytical separation and sensitive detection techniques, respectively. In this article a critical review of analytical quantitation approaches using liquid phase separations coupled to mass spectrometry for released glycans of biopharmaceutical and biomedical significance is presented. Considerations associated with sample derivatisation strategies, ionisation, relative quantitation through isotopic as well as isobaric labelling, metabolic/enzymatic incorporation and targeted analysis are all thoroughly discussed.
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Affiliation(s)
- Josh Smith
- National Institute for Bioprocessing Research and Training, Fosters Avenue, Mount Merrion, Blackrock, Dublin, A94 X099, Ireland. and School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, 152-160 Pearse Street, Dublin 2, D02 R590, Ireland
| | - Stefan Mittermayr
- National Institute for Bioprocessing Research and Training, Fosters Avenue, Mount Merrion, Blackrock, Dublin, A94 X099, Ireland.
| | - Csaba Váradi
- National Institute for Bioprocessing Research and Training, Fosters Avenue, Mount Merrion, Blackrock, Dublin, A94 X099, Ireland.
| | - Jonathan Bones
- National Institute for Bioprocessing Research and Training, Fosters Avenue, Mount Merrion, Blackrock, Dublin, A94 X099, Ireland. and School of Chemical and Bioprocess Engineering, University College Dublin, Belfield, Dublin 4, D04 V1 W8, Ireland
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131
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Liu P, Pang B, Tian L, Schäfer T, Gutmann T, Liu H, Volkert CA, Buntkowsky G, Zhang K. Efficient, Self-Terminating Isolation of Cellulose Nanocrystals through Periodate Oxidation in Pickering Emulsions. CHEMSUSCHEM 2018; 11:3581-3585. [PMID: 30126073 DOI: 10.1002/cssc.201801678] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Indexed: 06/08/2023]
Abstract
Many efforts have been made to isolate native nanocrystals from raw materials in the last two decades, such as cellulose nanocrystals (CNCs), but existing methods still suffer from low yields, complicated synthesis processes, and nonuniform sizes of obtained CNCs. This study concerns a facile, self-terminating, and efficient method for the formation of uniform CNCs in high yields during the periodate oxidation process within Pickering emulsions. A biphasic system containing hexane with dissolved hexylamine and an aqueous solution of sodium periodate (NaIO4 ) was used as the reaction medium. Regulated by hexylamine, owing to its limited solubility in water, the pH value of the aqueous phase was enhanced to around 9.8, leading to the precipitation of sodium orthoperiodate (Na2 H3 IO6 ) nanoplates and thus the formation of the initial Pickering emulsions. During the gradual formation of cellulose nanofibers and then CNCs, CNCs were attracted to stabilize the interface of the Pickering emulsions, which prevented further decomposition of CNCs by the oxidizing agent in aqueous suspensions. Thus, this isolation strategy secured the efficient separation of CNCs based on their own particular amphiphilic properties and achieved a high yield of up to 56 wt %.
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Affiliation(s)
- Peiwen Liu
- Wood Technology and Wood Chemistry, Georg-August-University of Göttingen, Büsgenweg 4, 37077, Göttingen, Germany
| | - Bo Pang
- Wood Technology and Wood Chemistry, Georg-August-University of Göttingen, Büsgenweg 4, 37077, Göttingen, Germany
| | - Lin Tian
- Institute for Material Physics, Georg-August-University of Göttingen, Friedrich-Hund-Platz 1, 37077, Göttingen, Germany
| | - Timmy Schäfer
- Eduard-Zintl-Institute for Inorganic Chemistry and Physical Chemistry, Technische Universität Darmstadt, Alarich-Weiss-Straße 4, 64287, Darmstadt, Germany
| | - Torsten Gutmann
- Eduard-Zintl-Institute for Inorganic Chemistry and Physical Chemistry, Technische Universität Darmstadt, Alarich-Weiss-Straße 4, 64287, Darmstadt, Germany
| | - Huan Liu
- Wood Technology and Wood Chemistry, Georg-August-University of Göttingen, Büsgenweg 4, 37077, Göttingen, Germany
| | - Cynthia A Volkert
- Institute for Material Physics, Georg-August-University of Göttingen, Friedrich-Hund-Platz 1, 37077, Göttingen, Germany
| | - Gerd Buntkowsky
- Eduard-Zintl-Institute for Inorganic Chemistry and Physical Chemistry, Technische Universität Darmstadt, Alarich-Weiss-Straße 4, 64287, Darmstadt, Germany
| | - Kai Zhang
- Wood Technology and Wood Chemistry, Georg-August-University of Göttingen, Büsgenweg 4, 37077, Göttingen, Germany
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132
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Evaluation of Hydrogels Based on Oxidized Hyaluronic Acid for Bioprinting. Gels 2018; 4:gels4040082. [PMID: 30674858 PMCID: PMC6318583 DOI: 10.3390/gels4040082] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Revised: 09/09/2018] [Accepted: 09/27/2018] [Indexed: 12/15/2022] Open
Abstract
In this study, we evaluate hydrogels based on oxidized hyaluronic acid, cross-linked with adipic acid dihydrazide, for their suitability as bioinks for 3D bioprinting. Aldehyde containing hyaluronic acid (AHA) is synthesized and cross-linked via Schiff Base chemistry with bifunctional adipic acid dihydrazide (ADH) to form a mechanically stable hydrogel with good printability. Mechanical and rheological properties of the printed and casted hydrogels are tunable depending on the concentrations of AHA and ADH cross-linkers.
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133
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Liu P, Mai C, Zhang K. Preparation of hydrogels with uniform and gradient chemical structures using dialdehyde cellulose and diamine by aerating ammonia gas. Front Chem Sci Eng 2018. [DOI: 10.1007/s11705-018-1718-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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134
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Emami Z, Ehsani M, Zandi M, Foudazi R. Controlling alginate oxidation conditions for making alginate-gelatin hydrogels. Carbohydr Polym 2018; 198:509-517. [DOI: 10.1016/j.carbpol.2018.06.080] [Citation(s) in RCA: 78] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Revised: 06/17/2018] [Accepted: 06/18/2018] [Indexed: 10/28/2022]
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135
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Abstract
The conjugation of biomolecules can impart materials with the bioactivity necessary to modulate specific cell behaviors. While the biological roles of particular polypeptide, oligonucleotide, and glycan structures have been extensively reviewed, along with the influence of attachment on material structure and function, the key role played by the conjugation strategy in determining activity is often overlooked. In this review, we focus on the chemistry of biomolecule conjugation and provide a comprehensive overview of the key strategies for achieving controlled biomaterial functionalization. No universal method exists to provide optimal attachment, and here we will discuss both the relative advantages and disadvantages of each technique. In doing so, we highlight the importance of carefully considering the impact and suitability of a particular technique during biomaterial design.
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Affiliation(s)
- Christopher D. Spicer
- Department
of Medical Biochemistry and Biophysics, Karolinska Institutet, Scheeles Väg 2, Stockholm, Sweden
| | - E. Thomas Pashuck
- NJ
Centre for Biomaterials, Rutgers University, 145 Bevier Road, Piscataway, New Jersey United States
| | - Molly M. Stevens
- Department
of Medical Biochemistry and Biophysics, Karolinska Institutet, Scheeles Väg 2, Stockholm, Sweden
- Department
of Materials, Department of Bioengineering, and Institute of Biomedical Engineering, Imperial College London, Exhibition Road, London, United Kingdom
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136
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Krawczyk T, Zalewski M, Janeta A, Hodurek P. SEC Separation of Polysaccharides Using Macroporous Spherical Silica Gel as a Stationary Phase. Chromatographia 2018; 81:1365-1372. [PMID: 30294004 PMCID: PMC6153982 DOI: 10.1007/s10337-018-3582-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Revised: 07/16/2018] [Accepted: 07/26/2018] [Indexed: 01/01/2023]
Abstract
Abstract Meso- and macroporous spherical silica gels of pore sizes in the range of 60–1000 Å and 40–75 µm particle size were investigated as a stationary phase for the separation and purification of polysaccharides and poly(ethylene glycols) (PEGs) of various MWs using an aqueous mobile phase. Sephadex and Bio-Gel were used for comparison as the most common stationary phases for similar purposes. The separation of dextrans of a mean MW = 31 kDa from small molecules (NaCl) was possible with SiO2 with a pore size of 60–300 Å, but the observed efficiencies of a column of the same size were lower comparing with Sephadex or Bio-Gel. In the case of oxidized alginic acid only SiO2 of the 60 Å pore size was suitable, while Sephadex, Bio-Gel and other investigated silicas were not efficient. Sephadex and 300–1000 Å SiO2 offered the possibility of dividing dextrans with MW within the range of 1 MDa–10 kDa into fractions of various MWs, while Bio-Gel and 60 Å SiO2 were not suitable. The investigated silica gels strongly adsorbed PEGs of MW 2–20 kDa. The amount adsorbed decreased with the increase of pore size and they were not useful as a stationary phase for this class of polymers. An advantage of SiO2 of the investigated particle size was a very low back pressure comparing with Sephadex. A considerably lower price of silica offers time- and cost-efficient separation of polysaccharides. Graphical Abstract ![]()
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Affiliation(s)
- Tomasz Krawczyk
- 1Department of Chemical Organic Technology and Petrochemistry, Faculty of Chemistry, Silesian University of Technology, ul. Krzywoustego 4, 44-100 Gliwice, Poland
| | - Mariusz Zalewski
- 1Department of Chemical Organic Technology and Petrochemistry, Faculty of Chemistry, Silesian University of Technology, ul. Krzywoustego 4, 44-100 Gliwice, Poland
| | - Anna Janeta
- 1Department of Chemical Organic Technology and Petrochemistry, Faculty of Chemistry, Silesian University of Technology, ul. Krzywoustego 4, 44-100 Gliwice, Poland
| | - Paweł Hodurek
- 2Wroclaw Medical University, Wybrzeże L. Pasteura 1, 50-367 Wrocław, Poland
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137
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Pereira I, Simões J, Evtyugin DV, Rouif S, Coimbra MA, Domingues MRM, Gama M. Effects of gamma irradiation and periodate oxidation on the structure of dextrin assessed by mass spectrometry. Eur Polym J 2018. [DOI: 10.1016/j.eurpolymj.2018.04.011] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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138
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Plappert SF, Quraishi S, Pircher N, Mikkonen KS, Veigel S, Klinger KM, Potthast A, Rosenau T, Liebner FW. Transparent, Flexible, and Strong 2,3-Dialdehyde Cellulose Films with High Oxygen Barrier Properties. Biomacromolecules 2018; 19:2969-2978. [PMID: 29757619 PMCID: PMC6041771 DOI: 10.1021/acs.biomac.8b00536] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
![]()
2,3-Dialdehyde
cellulose (DAC) of a high degree of oxidation (92%
relative to AGU units) prepared by oxidation of microcrystalline cellulose
with sodium periodate (48 °C, 19 h) is soluble in hot water.
Solution casting, slow air drying, hot pressing, and reinforcement
by cellulose nanocrystals afforded films (∼100 μm thickness)
that feature intriguing properties: they have very smooth surfaces
(SEM), are highly flexible, and have good light transmittance for
both the visible and near-infrared range (89–91%), high tensile
strength (81–122 MPa), and modulus of elasticity (3.4–4.0
GPa) depending on hydration state and respective water content. The
extraordinarily low oxygen permeation of <0.005 cm3 μm
m–2 day–1 kPa–1 (50% RH) and <0.03 cm3 μm m–2 day–1 kPa–1 (80% RH) can be
regarded as a particularly interesting feature of DAC films. The unusually
high initial contact angle of about 67° revealed a rather low
hydrophilicity compared to other oxidatively modified or unmodified
cellulosic materials which is most likely the result of inter- and
intramolecular hemiacetal and hemialdal formation during drying and
pressing.
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Affiliation(s)
| | | | | | - Kirsi S Mikkonen
- Department of Food and Environmental Sciences , University of Helsinki , P.O. Box 27, Helsinki , Finland
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Jelkmann M, Bonengel S, Menzel C, Markovic S, Bernkop-Schnürch A. New perspectives of starch: Synthesis and in vitro assessment of novel thiolated mucoadhesive derivatives. Int J Pharm 2018; 546:70-77. [PMID: 29758345 DOI: 10.1016/j.ijpharm.2018.05.028] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Revised: 04/30/2018] [Accepted: 05/10/2018] [Indexed: 11/20/2022]
Abstract
AIM The purpose of this study was to develop a novel thiolated starch polymer with improved mucoadhesive properties by conjugation of cysteamine to starch as a natural polymer of restricted mucoadhesive properties. METHODS Aldehyde substructures were integrated into starch via oxidative cleavage of vicinal diols by increasing amounts of sodium periodate followed by covalent attachment of cysteamine to oxidized starch via reductive amination. Thiol groups were quantified via Ellman's reaction and their impact on mucoadhesion was analyzed by rheological investigations, the rotating cylinder method and tensile studies on porcine mucosa. RESULTS The total amount of immobilized thiol groups revealed a correlation between degree of oxidation and thiolation. Modified starch demonstrated an up to 1.66-fold increase in water uptake in comparison to native starch. Modification of starch resulted in greatly improved cohesive properties and improvement in mucoadhesion. Rheological investigations revealed a 2- to 4-fold rise in viscosity of mucus. Tensile studies revealed a linear correlation between degree of oxidation/thiolation and enhancement of maximum detachment force and total work adhesion. CONCLUSION In terms of these results, thiolated starch is a new, promising, polymer in the field of mucoadhesive drug delivery systems.
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Affiliation(s)
- Max Jelkmann
- Center for Chemistry and Biomedicine, Department of Pharmaceutical Technology, Institute of Pharmacy, University of Innsbruck, Innrain 80/82, 6020 Innsbruck, Austria
| | - Sonja Bonengel
- Center for Chemistry and Biomedicine, Department of Pharmaceutical Technology, Institute of Pharmacy, University of Innsbruck, Innrain 80/82, 6020 Innsbruck, Austria
| | - Claudia Menzel
- Center for Chemistry and Biomedicine, Department of Pharmaceutical Technology, Institute of Pharmacy, University of Innsbruck, Innrain 80/82, 6020 Innsbruck, Austria
| | - Svetislav Markovic
- Center for Chemistry and Biomedicine, Department of Pharmaceutical Technology, Institute of Pharmacy, University of Innsbruck, Innrain 80/82, 6020 Innsbruck, Austria
| | - Andreas Bernkop-Schnürch
- Center for Chemistry and Biomedicine, Department of Pharmaceutical Technology, Institute of Pharmacy, University of Innsbruck, Innrain 80/82, 6020 Innsbruck, Austria.
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140
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Choi Y, Yoon HI, Lee C, Vetráková L, Heger D, Kim K, Kim J. Activation of Periodate by Freezing for the Degradation of Aqueous Organic Pollutants. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:5378-5385. [PMID: 29648451 DOI: 10.1021/acs.est.8b00281] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
A new strategy (i.e., freezing) for the activation of IO4- for the degradation of aqueous organic pollutants was developed and investigated. Although the degradation of furfuryl alcohol (FFA) by IO4- was negligible in water at 25 °C, it proceeded rapidly during freezing at -20 °C. The rapid degradation of FFA during freezing should be ascribed to the freeze concentration effect that provides a favorable site (i.e., liquid brine) for the proton-coupled degradation process by concentrating IO4-, FFA, and protons. The maximum absorption wavelength of cresol red (CR) was changed from 434 nm (monoprotonated CR) to 518 nm (diprotonated CR) after freezing, which confirms that the pH of the aqueous IO4- solution decreases by freezing. The degradation experiments with varying experimental parameters demonstrate that the degradation rate increases with increasing IO4- concentration and decreasing pH and freezing temperature. The application of the IO4-/freezing system is not restricted to FFA. The degradation of four other organic pollutants (i.e., tryptophan, phenol, 4-chlorophenol, and bisphenol A) by IO4-, which was negligible in water, proceeded during freezing. In addition, freezing significantly enhanced the IO4--mediated degradation of cimetidine. The outdoor experiments performed on a cold winter night show that the IO4-/freezing system for water treatment can be operated without external electrical energy.
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Affiliation(s)
- Yejin Choi
- Department of Environmental Sciences and Biotechnology , Hallym University , Chuncheon , Gangwon-do 24252 , Republic of Korea
| | - Ho-Il Yoon
- Korea Polar Research Institute (KOPRI) , Incheon 21990 , Republic of Korea
| | - Changha Lee
- School of Urban and Environmental Engineering , Ulsan National Institute of Science and Technology (UNIST) , Ulsan 44919 , Republic of Korea
| | - L'ubica Vetráková
- Department of Chemistry and Research Centre for Toxic Compounds in the Environment (RECETOX), Faculty of Science , Masaryk University , Kamenice 5 , 625 00 Brno , Czech Republic
| | - Dominik Heger
- Department of Chemistry and Research Centre for Toxic Compounds in the Environment (RECETOX), Faculty of Science , Masaryk University , Kamenice 5 , 625 00 Brno , Czech Republic
| | - Kitae Kim
- Korea Polar Research Institute (KOPRI) , Incheon 21990 , Republic of Korea
- Department of Polar Sciences , University of Science and Technology (UST) , Incheon 21990 , Republic of Korea
| | - Jungwon Kim
- Department of Environmental Sciences and Biotechnology , Hallym University , Chuncheon , Gangwon-do 24252 , Republic of Korea
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141
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Pandey N, Hakamivala A, Xu C, Hariharan P, Radionov B, Huang Z, Liao J, Tang L, Zimmern P, Nguyen KT, Hong Y. Biodegradable Nanoparticles Enhanced Adhesiveness of Mussel-Like Hydrogels at Tissue Interface. Adv Healthc Mater 2018; 7:e1701069. [PMID: 29205950 DOI: 10.1002/adhm.201701069] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Indexed: 12/29/2022]
Abstract
Popular bioadhesives, such as fibrin, cyanoacrylate, and albumin-glutaraldehyde based materials, have been applied for clinical applications in wound healing, drug delivery, and bone and soft tissue engineering; however, their performances are limited by weak adhesion strength and rapid degradation. In this study a mussel-inspired, nanocomposite-based, biodegradable tissue adhesive is developed by blending poly(lactic-co-glycolic acid) (PLGA) or N-hydroxysuccinimide modified PLGA nanoparticles (PLGA-NHS) with mussel-inspired alginate-dopamine polymer (Alg-Dopa). Adhesive strength measurement of the nanocomposites on porcine skin-muscle constructs reveals that the incorporation of nanoparticles in Alg-Dopa significantly enhances the tissue adhesive strength compared to the mussel-inspired adhesive alone. The nanocomposite formed by PLGA-NHS nanoparticles shows higher lap shear strength of 33 ± 3 kPa, compared to that of Alg-Dopa hydrogel alone (14 ± 2 kPa). In addition, these nanocomposites are degradable and cytocompatible in vitro, and elicit in vivo minimal inflammatory responses in a rat model, suggesting clinical potential of these nanocomposites as bioadhesives.
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Affiliation(s)
- Nikhil Pandey
- Department of Bioengineering University of Texas at Arlington Arlington TX 76010 USA
- Joint Biomedical Engineering Program University of Texas Southwestern Medical Center Dallas TX 75390 USA
| | - Amirhossein Hakamivala
- Department of Bioengineering University of Texas at Arlington Arlington TX 76010 USA
- Joint Biomedical Engineering Program University of Texas Southwestern Medical Center Dallas TX 75390 USA
| | - Cancan Xu
- Department of Bioengineering University of Texas at Arlington Arlington TX 76010 USA
- Joint Biomedical Engineering Program University of Texas Southwestern Medical Center Dallas TX 75390 USA
| | - Prashant Hariharan
- Department of Bioengineering University of Texas at Arlington Arlington TX 76010 USA
- Joint Biomedical Engineering Program University of Texas Southwestern Medical Center Dallas TX 75390 USA
| | - Boris Radionov
- Department of Bioengineering University of Texas at Arlington Arlington TX 76010 USA
- Joint Biomedical Engineering Program University of Texas Southwestern Medical Center Dallas TX 75390 USA
| | - Zhong Huang
- Department of Bioengineering University of Texas at Arlington Arlington TX 76010 USA
| | - Jun Liao
- Department of Bioengineering University of Texas at Arlington Arlington TX 76010 USA
- Joint Biomedical Engineering Program University of Texas Southwestern Medical Center Dallas TX 75390 USA
| | - Liping Tang
- Department of Bioengineering University of Texas at Arlington Arlington TX 76010 USA
- Joint Biomedical Engineering Program University of Texas Southwestern Medical Center Dallas TX 75390 USA
| | - Philippe Zimmern
- Department of Urology University of Texas Southwestern Medical Center Dallas TX 75390 USA
| | - Kytai T. Nguyen
- Department of Bioengineering University of Texas at Arlington Arlington TX 76010 USA
- Joint Biomedical Engineering Program University of Texas Southwestern Medical Center Dallas TX 75390 USA
| | - Yi Hong
- Department of Bioengineering University of Texas at Arlington Arlington TX 76010 USA
- Joint Biomedical Engineering Program University of Texas Southwestern Medical Center Dallas TX 75390 USA
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142
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Chen S, Cui S, Zhang H, Pei X, Hu J, Zhou Y, Liu Y. Cross-Linked Pectin Nanofibers with Enhanced Cell Adhesion. Biomacromolecules 2018; 19:490-498. [DOI: 10.1021/acs.biomac.7b01605] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Sainan Chen
- Key Laboratory of UV-Emitting Materials and Technology (Northeast Normal University), Ministry of Education, Changchun, Jilin 130024, P. R. China
| | - Sisi Cui
- School
of Life Sciences, Northeast Normal University, Changchun, Jilin 130024, P. R. China
| | - Hui Zhang
- Key Laboratory of UV-Emitting Materials and Technology (Northeast Normal University), Ministry of Education, Changchun, Jilin 130024, P. R. China
| | - Xuejing Pei
- School
of Life Sciences, Northeast Normal University, Changchun, Jilin 130024, P. R. China
| | - Junli Hu
- Key Laboratory of UV-Emitting Materials and Technology (Northeast Normal University), Ministry of Education, Changchun, Jilin 130024, P. R. China
| | - Yifa Zhou
- School
of Life Sciences, Northeast Normal University, Changchun, Jilin 130024, P. R. China
| | - Yichun Liu
- Key Laboratory of UV-Emitting Materials and Technology (Northeast Normal University), Ministry of Education, Changchun, Jilin 130024, P. R. China
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143
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Stanisci A, Aarstad OA, Tøndervik A, Sletta H, Dypås LB, Skjåk-Bræk G, Aachmann FL. Overall size of mannuronan C5-Epimerases influences their ability to epimerize modified alginates and alginate gels. Carbohydr Polym 2018; 180:256-263. [DOI: 10.1016/j.carbpol.2017.09.094] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Revised: 09/11/2017] [Accepted: 09/27/2017] [Indexed: 10/18/2022]
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144
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Turato C, Balasso A, Carloni V, Tiribelli C, Mastrotto F, Mazzocca A, Pontisso P. New molecular targets for functionalized nanosized drug delivery systems in personalized therapy for hepatocellular carcinoma. J Control Release 2017; 268:184-197. [PMID: 29051062 DOI: 10.1016/j.jconrel.2017.10.027] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Revised: 10/12/2017] [Accepted: 10/14/2017] [Indexed: 02/06/2023]
Abstract
Hepatocellular carcinoma, the most frequent solid tumor of the liver, has a very poor prognosis, being the second most common cause of death from cancer worldwide. The incidence and mortality of this liver tumor are increasing in most areas of the world as a consequence of aging and the emerging of new risk factors such as the metabolic syndrome, beside the recognized role of hepatitis B and C viral infections and alcohol abuse. Despite the increasing knowledge on the molecular mechanisms underlying hepatic carcinogenesis, effective therapeutic strategies are still an unmet clinical need. Efforts have been made to develop selective drugs as well as effective targeted drug delivery systems. The development of novel drug carriers for therapeutic molecules can indeed offer a valuable strategy to ameliorate the efficacy of HCC treatment. In this review, we discuss recent drug delivery strategies for HCC treatment based on the exploitation of targeted nanoparticles (NPs). Indeed, a few of these platforms have achieved an advanced stage of preclinical development. Here, we review the most promising drug nanovehicles based on both synthetic and natural polymers, including polysaccharides that have emerged for their biocompatibility and biodegradability. To maximize site-selectivity and therapeutic efficacy, drug delivery systems should be functionalized with ligands which can specifically recognize and bind targets expressed by HCC, namely cell membrane associated antigens, receptors or biotransporters. Cell surface and intracellular molecular targets are exploited either to selectively deliver drug-loaded nanovehicles or to design novel selective therapeutics. In conclusion, the combination of novel and safe drug delivery strategies based on site-specific targeted drug nanovehicles with therapeutic molecular targets may significantly improve the pharmacological efficacy for the treatment of HCC.
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Affiliation(s)
| | - Anna Balasso
- Department of Pharmaceutical & Pharmacological Sciences, University of Padova, Padova, Italy
| | - Vinicio Carloni
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | | | - Francesca Mastrotto
- Department of Pharmaceutical & Pharmacological Sciences, University of Padova, Padova, Italy
| | - Antonio Mazzocca
- Interdisciplinary Department of Medicine, University of Bari, Bari, Italy.
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145
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Smeets NM, Imbrogno S, Bloembergen S. Carbohydrate functionalized hybrid latex particles. Carbohydr Polym 2017; 173:233-252. [DOI: 10.1016/j.carbpol.2017.05.075] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Revised: 05/05/2017] [Accepted: 05/24/2017] [Indexed: 11/30/2022]
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146
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Synthesis and Charaterization of Silica-Based Aldehyde Chitosan Hybrid Material for Biodiesel Purification. MATERIALS 2017; 10:ma10101132. [PMID: 28946695 PMCID: PMC5666938 DOI: 10.3390/ma10101132] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/12/2017] [Revised: 09/14/2017] [Accepted: 09/22/2017] [Indexed: 11/17/2022]
Abstract
This study concerns the development and charaterization of Silica-based aldehyde Chitosan hybrid material as an adsorbent for biodiesel purification. This biocomposite was prepared by sol-gel route and oxidation with periodate, and then characterized. FTIR experiments showed that the hybrid formed presents absorption bands similar to those of Chitosan-Silica, with the exception of the vibrations at 1480 cm−1 and 1570 cm−1 attributed to the symmetrical angular deformation in the N-H plane, and possess large N2 Brunauer–Emmett–Teller (BET) surface areas. Thermogravimetric analysis (TG) and scanning electron microscopy (SEM) was also carried out. Adsorption studies of bioadsorbents involving the analysis of free glycerol, soap, acidity, diglycerides, triglycerides, and fluorescence spectroscopy showed that silica-based aldehyde chitosan has a good affinity for glycerol and a good purification process.
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147
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Keshk SMAS, Ramadan AM, Al-Sehemi AG, Irfan A, Bondock S. An unexpected reactivity during periodate oxidation of chitosan and the affinity of its 2, 3-di-aldehyde toward sulfa drugs. Carbohydr Polym 2017; 175:565-574. [PMID: 28917902 DOI: 10.1016/j.carbpol.2017.08.027] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Revised: 08/03/2017] [Accepted: 08/07/2017] [Indexed: 11/28/2022]
Abstract
In an attempt to determine the reactivity during the periodate oxidation of the vicinal amino sugar, chitosan was oxidized by KIO4 in a neutral medium. The reactivity was unexpectedly found to be low. The formation of di-aldehyde chitosan (DACT) might cause the low reactivity of chitosan oxidation. Therefore, density functional theory (DFT) calculations were carried out, which revealed that the greater stability of the cyclic amino iodate intermediate might retard the ring opening to form DACT. Furthermore, the affinity of the formation of two novel Schiff bases from the interaction of delivered DACT with two sulfa drugs [sulfanilamide and sulfathiazole] was also investigated using aldehyde content estimation. DACT and Schiff's bases were characterized by FT-IR spectroscopy, X-ray diffraction, and DTA analysis. The X-ray diffraction plane (110) of DACT at the high angle side was expanded more by sulfathiazole than sulfanilamide, indicating that sulfathiazole reacted effectively with DACT. The lowest interaction of DACT with sulfa drugs could be ascribed to the lowest aldehyde content and the intramolecular hemiacetal formation that hinders the Schiff's base condensation.
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Affiliation(s)
- Sherif M A S Keshk
- Research Center for Advanced Materials Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia; Department of Chemistry, Faculty of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia; Ain Shams University, Institute of Environmental Studies and Research, Basic Science Department, Abbassia, Cairo 11566, Egypt.
| | - Ahmed M Ramadan
- Department of Chemistry, Faculty of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia; Department of Chemistry, Faculty of Science, Alexandria University, Alexandria, Egypt
| | - Abdullah G Al-Sehemi
- Research Center for Advanced Materials Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia; Department of Chemistry, Faculty of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia
| | - Ahmad Irfan
- Research Center for Advanced Materials Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia; Department of Chemistry, Faculty of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia
| | - Samir Bondock
- Research Center for Advanced Materials Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia; Department of Chemistry, Faculty of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia; Department of Chemistry, Faculty of Science, Mansoura University, Mansoura, Egypt
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148
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Oliver S, Jofri A, Thomas DS, Vittorio O, Kavallaris M, Boyer C. Tuneable catechin functionalisation of carbohydrate polymers. Carbohydr Polym 2017; 169:480-494. [DOI: 10.1016/j.carbpol.2017.04.032] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Revised: 04/10/2017] [Accepted: 04/14/2017] [Indexed: 10/19/2022]
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149
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Re-programming pullulan for targeting and controlled release of doxorubicin to the hepatocellular carcinoma cells. Eur J Pharm Sci 2017; 103:104-115. [DOI: 10.1016/j.ejps.2017.02.016] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Revised: 02/03/2017] [Accepted: 02/08/2017] [Indexed: 02/07/2023]
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150
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Ding W, Zhou J, Zeng Y, Wang YN, Shi B. Preparation of oxidized sodium alginate with different molecular weights and its application for crosslinking collagen fiber. Carbohydr Polym 2016; 157:1650-1656. [PMID: 27987879 DOI: 10.1016/j.carbpol.2016.11.045] [Citation(s) in RCA: 85] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Revised: 11/11/2016] [Accepted: 11/15/2016] [Indexed: 10/20/2022]
Abstract
A series of periodate oxidized sodium alginate (OSA) were prepared as green polysaccharide-based crosslinkers. The molecular weight of OSA decreased, while their aldehyde group content increased with increasing dosage of sodium periodate. A typical OSA was further fractionated to four fractions by ethanol with a narrower molecular weight distribution. Then the crosslinking performances of OSAs/fractions on collagen fiber (CF) were investigated. DSC and SEM analyses showed that the thermal stability and dispersion degree of crosslinked CF was considerably enhanced with decreasing molecular weight of OSA. The effect of aldehyde group content of OSA on its crosslinking performance was less obvious than that of molecular weight, probably because the aldehyde group content in each OSA sample was higher than the amino group content of CF involved in the crosslinking reaction. In general, molecular weight of OSA plays a decisive role in improving properties of the crosslinked CF.
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Affiliation(s)
- Wei Ding
- National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu 610065, PR China
| | - Jianfei Zhou
- National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu 610065, PR China
| | - Yunhang Zeng
- National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu 610065, PR China
| | - Ya-Nan Wang
- National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu 610065, PR China.
| | - Bi Shi
- National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu 610065, PR China; Key Laboratory of Leather Chemistry and Engineering (Sichuan University), Ministry of Education, Chengdu 610065, PR China
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