1
|
Raghav N, Vashisth C, Mor N, Arya P, Sharma MR, Kaur R, Bhatti SP, Kennedy JF. Recent advances in cellulose, pectin, carrageenan and alginate-based oral drug delivery systems. Int J Biol Macromol 2023:125357. [PMID: 37327920 DOI: 10.1016/j.ijbiomac.2023.125357] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 06/05/2023] [Accepted: 06/10/2023] [Indexed: 06/18/2023]
Abstract
Polymers-based drug delivery systems constitute one of the highly explored thrust areas in the field of the medicinal and pharmaceutical industries. In the past years, the properties of polymers have been modified in context to their solubility, release kinetics, targeted action site, absorption, and therapeutic efficacy. Despite the availability of diverse synthetic polymers for the bioavailability enhancement of drugs, the use of natural polymers is still highly recommended due to their easy availability, accessibility, and non-toxicity. The aim of the review is to provide the available literature of the last five years on oral drug delivery systems based on four natural polymers i.e., cellulose, pectin, carrageenan, and alginate in a concise and tabulated manner. In this review, most of the information is in tabulated form to provide easy accessibility to the reader. The data related to active pharmaceutical ingredients and supported components in different formulations of the mentioned polymers have been made available.
Collapse
Affiliation(s)
- Neera Raghav
- Chemistry Department, Kurukshetra University, Kurukshetra, Haryana 136119, India.
| | - Chanchal Vashisth
- Chemistry Department, Kurukshetra University, Kurukshetra, Haryana 136119, India
| | - Nitika Mor
- Chemistry Department, Kurukshetra University, Kurukshetra, Haryana 136119, India
| | - Priyanka Arya
- Chemistry Department, Kurukshetra University, Kurukshetra, Haryana 136119, India
| | - Manishita R Sharma
- Chemistry Department, Kurukshetra University, Kurukshetra, Haryana 136119, India
| | - Ravinder Kaur
- Chemistry Department, Kurukshetra University, Kurukshetra, Haryana 136119, India
| | | | - John F Kennedy
- Chembiotech laboratories Ltd, Tenbury Wells, WR15 8FF, United Kingdom.
| |
Collapse
|
2
|
|
3
|
Altam AA, Zhu L, Wang W, Yagoub H, Yang S. Stability improvement of carboxymethyl cellulose/chitosan complex beads by thermal treatment. Int J Biol Macromol 2022; 223:1278-1286. [PMID: 36379283 DOI: 10.1016/j.ijbiomac.2022.11.089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 10/22/2022] [Accepted: 11/09/2022] [Indexed: 11/14/2022]
Abstract
Carboxymethyl cellulose (CMC) and chitosan (CHI) are two well-known natural polymer derivatives, as such the CMC@CHI complex beads fulfill many requirements for bio-related and safety-required applications. However, poor mechanical properties of CMC@CHI beads hinder their applications. We managed to improve the beads stability by a simple thermal treatment during the bead preparation. The effects of temperature, changing from 25 °C to 75 °C, on the stability of the formed beads were investigated. The morphology, diameter, shell thickness and structure of the beads treated at different temperature were analyzed using SEM, XPS and FTIR. The mechanical test and swelling experiments showed that the thermal treatment enhanced the bead's ability to withstand pressure and swelling. The beads treated at 75 °C showed the best pressure resistance, while the beads treated at 55 °C exhibited the highest swelling capability without losing integrity. This method is convenient to implement, not only improves the stability, but also controls the swelling capacity and mechanical properties of the beads, which are important for their potential applications in adsorption and controlled release. More importantly, this work offered insights on the effects of thermal treatment on the complexation process of the two polysaccharide molecular chains.
Collapse
Affiliation(s)
- Ali A Altam
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Center for Advanced Low-dimension Materials, Donghua University, Shanghai 201620, China
| | - Liping Zhu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Center for Advanced Low-dimension Materials, Donghua University, Shanghai 201620, China.
| | - Weijie Wang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Center for Advanced Low-dimension Materials, Donghua University, Shanghai 201620, China
| | - Hajo Yagoub
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Center for Advanced Low-dimension Materials, Donghua University, Shanghai 201620, China
| | - Shuguang Yang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Center for Advanced Low-dimension Materials, Donghua University, Shanghai 201620, China.
| |
Collapse
|
4
|
Zhang Y, Dong L, Liu L, Wu Z, Pan D, Liu L. Recent Advances of Stimuli-Responsive Polysaccharide Hydrogels in Delivery Systems: A Review. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:6300-6316. [PMID: 35578738 DOI: 10.1021/acs.jafc.2c01080] [Citation(s) in RCA: 53] [Impact Index Per Article: 26.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Hydrogels obtained from natural polymers have received widespread attention for their excellent biocompatible property, nontoxicity, easy gelation, and functionalization. Polysaccharides can regulate the gut microbiota and improve the intestinal microenvironment, thus exerting the healthy effect of intestinal immunity. In an active substance delivery system, the extent and speed of the substance reaching its target are highly dependent on the carrier. Thus, the smart active substance delivery systems are gradually increasing. The smart polysaccharide-hydrogels possess the ability in response to external stimuli through changing their volume phase and structure, which are applied in various fields. Natural polysaccharide-based hydrogels possess excellent characteristics of environmental friendliness, good biocompatibility, and abundant sources. According to the response type, natural polysaccharide-based hydrogels are usually divided into stimulus-responsive hydrogels, including internal response (pH, temperature, enzyme, redox) and external response (light, electricity, magnetism) hydrogels. The delivery system based on polysaccharides can exert their effects in the gastrointestinal tract. At the same time, polysaccharides may also take part in regulating the brain signals through the microbiota-gut-brain axis. Therefore, natural polysaccharide-hydrogels are considered as promising biomaterials, which can be designed as delivery systems for regulating the gut-brain axis. This article reviews the research advance of stimulus-responsive hydrogels, which focus on the types, response characteristics, and applications for polysaccharide-based smart hydrogels as delivery systems.
Collapse
Affiliation(s)
- Yunzhen Zhang
- Ningbo University, College of Food and Pharmaceutical Sciences, Deep Processing Technology Key Laboratory of Zhejiang Province Animal Protein Food, Ningbo University, Ningbo 315832, Zhejiang Province, P. R. China
| | - Lezhen Dong
- Ningbo University, College of Food and Pharmaceutical Sciences, Deep Processing Technology Key Laboratory of Zhejiang Province Animal Protein Food, Ningbo University, Ningbo 315832, Zhejiang Province, P. R. China
| | - Lingyi Liu
- University of Nebraska Lincoln, Department of Food Science & Technology, Lincoln, Nebraska 68588, United States
| | - Zufang Wu
- Ningbo University, College of Food and Pharmaceutical Sciences, Deep Processing Technology Key Laboratory of Zhejiang Province Animal Protein Food, Ningbo University, Ningbo 315832, Zhejiang Province, P. R. China
| | - Daodong Pan
- Ningbo University, College of Food and Pharmaceutical Sciences, Deep Processing Technology Key Laboratory of Zhejiang Province Animal Protein Food, Ningbo University, Ningbo 315832, Zhejiang Province, P. R. China
| | - Lianliang Liu
- Ningbo University, College of Food and Pharmaceutical Sciences, Deep Processing Technology Key Laboratory of Zhejiang Province Animal Protein Food, Ningbo University, Ningbo 315832, Zhejiang Province, P. R. China
| |
Collapse
|
5
|
Characteristics and application of fish oil-in-water pickering emulsions structured with tea water-insoluble proteins/κ-carrageenan complexes. Food Hydrocoll 2021. [DOI: 10.1016/j.foodhyd.2020.106562] [Citation(s) in RCA: 53] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
|
6
|
Fang H, Li J, Huo T, Niu Y, Yu L. Novel double cross-linked gels of soybean protein isolates and soluble dietary fiber from soybean coats with their functionalities. Food Hydrocoll 2021. [DOI: 10.1016/j.foodhyd.2020.106474] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
7
|
Dong H, Zhang W, Zhou S, Huang J, Wang P. Engineering bioscaffolds for enzyme assembly. Biotechnol Adv 2021; 53:107721. [PMID: 33631185 DOI: 10.1016/j.biotechadv.2021.107721] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 02/04/2021] [Accepted: 02/14/2021] [Indexed: 12/27/2022]
Abstract
With the demand for green, safe, and continuous biocatalysis, bioscaffolds, compared with synthetic scaffolds, have become a desirable candidate for constructing enzyme assemblages because of their biocompatibility and regenerability. Biocompatibility makes bioscaffolds more suitable for safe and green production, especially in food processing, production of bioactive agents, and diagnosis. The regenerability can enable the engineered biocatalysts regenerate through simple self-proliferation without complex re-modification, which is attractive for continuous biocatalytic processes. In view of the unique biocompatibility and regenerability of bioscaffolds, they can be classified into non-living (polysaccharide, nucleic acid, and protein) and living (virus, bacteria, fungi, spore, and biofilm) bioscaffolds, which can fully satisfy these two unique properties, respectively. Enzymes assembled onto non-living bioscaffolds are based on single or complex components, while enzymes assembled onto living bioscaffolds are based on living bodies. In terms of their unique biocompatibility and regenerability, this review mainly covers the current advances in the research and application of non-living and living bioscaffolds with focus on engineering strategies for enzyme assembly. Finally, the future development of bioscaffolds for enzyme assembly is also discussed. Hopefully, this review will attract the interest of researchers in various fields and empower the development of biocatalysis, biomedicine, environmental remediation, therapy, and diagnosis.
Collapse
Affiliation(s)
- Hao Dong
- State Key Laboratory of Bioreactor Engineering, School of Biotechnology, East China University of Science and Technology, Shanghai 200237, China
| | - Wenxue Zhang
- State Key Laboratory of Bioreactor Engineering, School of Biotechnology, East China University of Science and Technology, Shanghai 200237, China
| | - Shengmin Zhou
- State Key Laboratory of Bioreactor Engineering, School of Biotechnology, East China University of Science and Technology, Shanghai 200237, China
| | - Jiaofang Huang
- State Key Laboratory of Bioreactor Engineering, School of Biotechnology, East China University of Science and Technology, Shanghai 200237, China.
| | - Ping Wang
- Department of Bioproducts and Biosystems Engineering, University of Minnesota, St Paul, MN 55108, USA.
| |
Collapse
|
8
|
Rostamabadi H, Falsafi SR, Assadpour E, Jafari SM. Evaluating the structural properties of bioactive‐loaded nanocarriers with modern analytical tools. Compr Rev Food Sci Food Saf 2020; 19:3266-3322. [DOI: 10.1111/1541-4337.12653] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 08/27/2020] [Accepted: 09/21/2020] [Indexed: 12/12/2022]
Affiliation(s)
- Hadis Rostamabadi
- Faculty of Food Science and Technology Gorgan University of Agricultural Sciences and Natural Resources Gorgan Iran
| | - Seid Reza Falsafi
- Faculty of Food Science and Technology Gorgan University of Agricultural Sciences and Natural Resources Gorgan Iran
| | - Elham Assadpour
- Faculty of Food Science and Technology Gorgan University of Agricultural Sciences and Natural Resources Gorgan Iran
| | - Seid Mahdi Jafari
- Faculty of Food Science and Technology Gorgan University of Agricultural Sciences and Natural Resources Gorgan Iran
| |
Collapse
|
9
|
Melchior S, Marino M, Innocente N, Calligaris S, Nicoli MC. Effect of different biopolymer-based structured systems on the survival of probiotic strains during storage and in vitro digestion. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2020; 100:3902-3909. [PMID: 32323334 DOI: 10.1002/jsfa.10432] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2020] [Revised: 04/02/2020] [Accepted: 04/23/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND This study aimed to evaluate the protective effect of different biopolymer systems on the viability of two probiotics (Lactobacillus rhamnosus and Streptococcus thermophilus) during storage and in vitro digestion. Methylcellulose (MC), sodium alginate (SA), and whey protein (WP)-based structures were designed and characterized in terms of pH, rheological properties, and visual appearance. RESULTS The results highlighted that the WP-system ensured probiotic protection during both storage and in vitro digestion. This result was attributed to a combined effect of the physical barrier offered by the protein gel network and whey proteins as a nutrient for microbes. On the other hand, surprisingly, the viscous methylcellulose-based system was able to guarantee good microbial viability during storage. However, this was not confirmed during in vitro digestion. The opposite results were obtained for sodium alginate beads. CONCLUSION The results suggest that the capacity of a polymeric structure to protect probiotic bacteria is a combination of structural organization and system formulation. © 2020 Society of Chemical Industry.
Collapse
Affiliation(s)
- Sofia Melchior
- Dipartimento di Scienze Agroalimentari, Ambientali e Animali, Università di Udine, Udine, Italy
| | - Marilena Marino
- Dipartimento di Scienze Agroalimentari, Ambientali e Animali, Università di Udine, Udine, Italy
| | - Nadia Innocente
- Dipartimento di Scienze Agroalimentari, Ambientali e Animali, Università di Udine, Udine, Italy
| | - Sonia Calligaris
- Dipartimento di Scienze Agroalimentari, Ambientali e Animali, Università di Udine, Udine, Italy
| | - Maria Cristina Nicoli
- Dipartimento di Scienze Agroalimentari, Ambientali e Animali, Università di Udine, Udine, Italy
| |
Collapse
|
10
|
The application of biomacromolecules to improve oral absorption by enhanced intestinal permeability: A mini-review. CHINESE CHEM LETT 2020. [DOI: 10.1016/j.cclet.2020.02.035] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
|
11
|
Silva RC, Trevisan MG, Garcia JS. β-galactosidase Encapsulated in Carrageenan, Pectin and Carrageenan/Pectin: Comparative Study, Stability and Controlled Release. AN ACAD BRAS CIENC 2020; 92:e20180609. [PMID: 32267306 DOI: 10.1590/0001-3765202020180609] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Accepted: 12/14/2018] [Indexed: 12/14/2022] Open
Abstract
The present study investigated the encapsulation of β-galactosidase in carrageenan, pectin and its hybrid hydrogels by using the ionotropic gelation method. The material obtained was characterized by Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TG/DTG) and scanning electron microscopy (SEM). The effects of pH, temperature and storage time were evaluated in terms of the catalytic activity of the free and encapsulated enzyme. Addition studies were conducted evaluating the performance of catalytic activity in vitro conditions. Carrageenan, pectin and hybrid hydrogels presented encapsulation efficiency of 58 ± 1%, 72 ± 1% and 77 ± 2%, respectively. The pectin hydrogel showed the higher β-galactosidase activity in pH and temperature tests. However, the carrageenan hydrogel exhibited best stability after been stored for three months. Carrageenan and pectin hydrogels were 2.0 and 2.4 times more efficiently than commercial tablet in the releasing β-galactosidase under in vitro conditions, respectively. The results suggest that pectin and carrageenan hydrogels may be useful for the development of new formulation of β-galactosidase.
Collapse
Affiliation(s)
- Renata Cristina Silva
- Laboratory of Analysis and Characterization of Pharmaceuticals - LACFar, Institute of Chemistry, Universidade Federal de Alfenas, Rua Gabriel Monteiro da Silva, 700, 37130-001 Alfenas, MG, Brazil
| | - Marcello G Trevisan
- Laboratory of Analysis and Characterization of Pharmaceuticals - LACFar, Institute of Chemistry, Universidade Federal de Alfenas, Rua Gabriel Monteiro da Silva, 700, 37130-001 Alfenas, MG, Brazil
| | - Jerusa Simone Garcia
- Laboratory of Analysis and Characterization of Pharmaceuticals - LACFar, Institute of Chemistry, Universidade Federal de Alfenas, Rua Gabriel Monteiro da Silva, 700, 37130-001 Alfenas, MG, Brazil
| |
Collapse
|
12
|
Formation of self-assembled polyelectrolyte complex hydrogel derived from salecan and chitosan for sustained release of Vitamin C. Carbohydr Polym 2020; 234:115920. [DOI: 10.1016/j.carbpol.2020.115920] [Citation(s) in RCA: 73] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 01/20/2020] [Accepted: 01/26/2020] [Indexed: 01/12/2023]
|
13
|
Qureshi D, Nayak SK, Maji S, Kim D, Banerjee I, Pal K. Carrageenan: A Wonder Polymer from Marine Algae for Potential Drug Delivery Applications. Curr Pharm Des 2020; 25:1172-1186. [PMID: 31465278 DOI: 10.2174/1381612825666190425190754] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Accepted: 04/15/2019] [Indexed: 01/02/2023]
Abstract
BACKGROUND With the advancement in the field of medical science, the idea of sustained release of the therapeutic agents in the patient's body has remained a major thrust for developing advanced drug delivery systems (DDSs). The critical requirement for fabricating these DDSs is to facilitate the delivery of their cargos in a spatio-temporal and pharmacokinetically-controlled manner. Albeit the synthetic polymer-based DDSs normally address the above-mentioned conditions, their potential cytotoxicity and high cost have ultimately constrained their success. Consequently, the utilization of natural polymers for the fabrication of tunable DDSs owing to their biocompatible, biodegradable, and non-toxic nature can be regarded as a significant stride in the field of drug delivery. Marine environment serves as an untapped resource of varied range of materials such as polysaccharides, which can easily be utilized for developing various DDSs. METHODS Carrageenans are the sulfated polysaccharides that are extracted from the cell wall of red seaweeds. They exhibit an assimilation of various biological activities such as anti-thrombotic, anti-viral, anticancer, and immunomodulatory properties. The main aim of the presented review is threefold. The first one is to describe the unique physicochemical properties and structural composition of different types of carrageenans. The second is to illustrate the preparation methods of the different carrageenan-based macro- and micro-dimensional DDSs like hydrogels, microparticles, and microspheres respectively. Fabrication techniques of some advanced DDSs such as floating hydrogels, aerogels, and 3-D printed hydrogels have also been discussed in this review. Next, considerable attention has been paid to list down the recent applications of carrageenan-based polymeric architectures in the field of drug delivery. RESULTS Presence of structural variations among the different carrageenan types helps in regulating their temperature and ion-dependent sol-to-gel transition behavior. The constraint of low mechanical strength of reversible gels can be easily eradicated using chemical crosslinking techniques. Carrageenan based-microdimesional DDSs (e.g. microspheres, microparticles) can be utilized for easy and controlled drug administration. Moreover, carrageenans can be fabricated as 3-D printed hydrogels, floating hydrogels, and aerogels for controlled drug delivery applications. CONCLUSION In order to address the problems associated with many of the available DDSs, carrageenans are establishing their worth recently as potential drug carriers owing to their varied range of properties. Different architectures of carrageenans are currently being explored as advanced DDSs. In the near future, translation of carrageenan-based advanced DDSs in the clinical applications seems inevitable.
Collapse
Affiliation(s)
- Dilshad Qureshi
- Department of Biotechnology and Medical Engineering, National Institute of Technology, Rourkela, India
| | - Suraj Kumar Nayak
- Department of Biotechnology and Medical Engineering, National Institute of Technology, Rourkela, India
| | - Samarendra Maji
- SRM Research Institute, SRM Institute of Science and Technology, Kanchipuram, India
| | - Doman Kim
- Department of International Agricultural Technology & Institute of Green BioScience and Technology, Seoul National University, Gwangwon, Korea
| | - Indranil Banerjee
- Department of Biotechnology and Medical Engineering, National Institute of Technology, Rourkela, India
| | - Kunal Pal
- Department of Biotechnology and Medical Engineering, National Institute of Technology, Rourkela, India
| |
Collapse
|
14
|
In vitro digestion of polysaccharide including whey protein isolate hydrogels. Carbohydr Polym 2020; 229:115469. [DOI: 10.1016/j.carbpol.2019.115469] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Revised: 10/07/2019] [Accepted: 10/11/2019] [Indexed: 02/08/2023]
|
15
|
Design of Advanced Polymeric Hydrogels for Tissue Regenerative Medicine: Oxygen-Controllable Hydrogel Materials. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2020; 1250:63-78. [DOI: 10.1007/978-981-15-3262-7_5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
|
16
|
Dragan ES, Dinu MV. Polysaccharides constructed hydrogels as vehicles for proteins and peptides. A review. Carbohydr Polym 2019; 225:115210. [DOI: 10.1016/j.carbpol.2019.115210] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Revised: 08/15/2019] [Accepted: 08/16/2019] [Indexed: 12/11/2022]
|
17
|
Zhao D, Rajan R, Matsumura K. Dual Thermo- and pH-Responsive Behavior of Double Zwitterionic Graft Copolymers for Suppression of Protein Aggregation and Protein Release. ACS APPLIED MATERIALS & INTERFACES 2019; 11:39459-39469. [PMID: 31592638 DOI: 10.1021/acsami.9b12723] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Graft copolymers consisting of two different zwitterionic blocks were synthesized via reversible addition fragmentation chain transfer polymerization. These polymers showed dual properties of thermo- and pH-responsiveness in an aqueous solution. Ultraviolet-visible spectroscopy and dynamic light scattering were employed to study the phase behavior under varying temperatures and pH values. Unlike the phase transition temperatures of other graft copolymers containing nonionic blocks, the phase transition temperature of these polymers was easily tuned by changing the polymer concentration. Owing to the biocompatible and stimuli-responsive nature of the polymers, this system was shown to effectively release proteins (lysozyme) while simultaneously protecting them against denaturation. The positively charged lysozyme was shown to bind with the negatively charged polymer at the physiological pH (pH 7.4). However, it was subsequently released at pH 3, at which the polymer exhibits a positive charge. Protein aggregation studies using a residual enzymatic activity assay, circular dichroism, and a Thioflavin T assay revealed that the secondary structure of the lysozyme was retained even after harsh thermal treatment. The addition of these polymers helped the lysozyme retain its enzymatic activity and suppressed its fibrillation. Both polymers showed excellent protein protection properties, with the negatively charged polymer exhibiting slightly superior protein protection properties to those of the neutral polymer. To the best of the authors' knowledge, this is the first study to develop a graft copolymer system consisting of two different zwitterionic blocks that shows dual thermo- and pH-responsive properties. The presence of the polyampholyte structure enables these polymers to act as protein release agents, while simultaneously protecting the proteins from severe stress.
Collapse
Affiliation(s)
- Dandan Zhao
- School of Materials Science , Japan Advanced Institute of Science and, Technology , 1-1 Asahidai , Nomi , Ishikawa 923-1292 , Japan
| | - Robin Rajan
- School of Materials Science , Japan Advanced Institute of Science and, Technology , 1-1 Asahidai , Nomi , Ishikawa 923-1292 , Japan
| | - Kazuaki Matsumura
- School of Materials Science , Japan Advanced Institute of Science and, Technology , 1-1 Asahidai , Nomi , Ishikawa 923-1292 , Japan
| |
Collapse
|
18
|
Wei H, Yang X, Chu H, Li J. Facile and green preparation of thermal and ph sensitive hydrogel microspheres based on spray drying and the diels–alder reaction. POLYM ENG SCI 2019. [DOI: 10.1002/pen.25198] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Hongliang Wei
- College of Chemistry, Chemical and Environmental EngineeringHenan University of Technology Zhengzhou 450001 People's Republic of China
| | - Xiaoqing Yang
- College of Chemistry, Chemical and Environmental EngineeringHenan University of Technology Zhengzhou 450001 People's Republic of China
| | - Huijuan Chu
- College of Chemistry, Chemical and Environmental EngineeringHenan University of Technology Zhengzhou 450001 People's Republic of China
| | - Jingjing Li
- College of Chemistry, Chemical and Environmental EngineeringHenan University of Technology Zhengzhou 450001 People's Republic of China
| |
Collapse
|
19
|
Xiang T, Yang J, Li S, Li J, Situ W. Improvement in bioactive protein storage stability and colon-targeted release: a simple double-layer chitosan-based particle. J Microencapsul 2019; 36:474-484. [DOI: 10.1080/02652048.2019.1646336] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Tuo Xiang
- College of Food Science, South China Agricultural University, Guangzhou, China
| | - Jingwen Yang
- College of Food Science, South China Agricultural University, Guangzhou, China
| | - Shanshan Li
- College of Food Science, South China Agricultural University, Guangzhou, China
| | - Jiaying Li
- College of Food Science, South China Agricultural University, Guangzhou, China
| | - Wenbei Situ
- College of Food Science, South China Agricultural University, Guangzhou, China
| |
Collapse
|
20
|
Microencapsulation of lactase by W/O/W emulsion followed by complex coacervation: Effects of enzyme source, addition of potassium and core to shell ratio on encapsulation efficiency, stability and kinetics of release. Food Res Int 2019; 121:754-764. [DOI: 10.1016/j.foodres.2018.12.053] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Revised: 12/11/2018] [Accepted: 12/23/2018] [Indexed: 12/17/2022]
|