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Sun Q, Chen J, Zhao Q, He Z, Tang L, Pu Y, He B. Bio-adhesive and ROS-scavenging hydrogel microspheres for targeted ulcerative colitis therapy. Int J Pharm 2023; 639:122962. [PMID: 37068716 DOI: 10.1016/j.ijpharm.2023.122962] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Revised: 03/24/2023] [Accepted: 04/11/2023] [Indexed: 04/19/2023]
Abstract
Ulcerative colitis (UC) as an important type of inflammatory bowel disease is a chronic disease characterized by intestinal dyshomeostasis. The UC treatment is challenged by the insufficiency of drug delivery and retention. Herein, we fabricated an intrarectal formulation of olsalazine (Olsa)-loaded hydrogel microspheres (LDKT/Olsa) with good bio-adhesiveness and reactive oxygen species (ROS)-scavenging ability to enhance drug retention and therapeutic effect. Low methoxy pectin-dopamine conjugate/konjac glucomannan composite hydrogel microspheres (LDKT) with a size ranging from 10 to 100 μm were prepared by using Zn2+ and ROS-sensitive thioketal as crosslinkers. Upon intrarectal administration, the negatively charged and dopamine-functionalized hydrogel microspheres efficiently adhered to cationic surface of inflammatory mucosa, scavenging ROS and releasing Zn2+ and Olsa for antibacterial and anti-inflammatory effects. In the dextran sodium sulfate (DSS)-induced mouse UC model, the microspheres significantly reduced the levels of colonic ROS and pro-inflammatory cytokines, improved gut mucosal barrier integrity, and remarkably relieved colitis. Overall, the LDKT microspheres are promising carriers to deliver drugs for UC treatment.
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Affiliation(s)
- Qiqi Sun
- National Engineering Research Center for Biomaterials, College of Biomedical Engineering, Sichuan University, Chengdu 610064, China
| | - Jun Chen
- National Engineering Research Center for Biomaterials, College of Biomedical Engineering, Sichuan University, Chengdu 610064, China
| | - Quan Zhao
- National Engineering Research Center for Biomaterials, College of Biomedical Engineering, Sichuan University, Chengdu 610064, China
| | - Ziyun He
- National Engineering Research Center for Biomaterials, College of Biomedical Engineering, Sichuan University, Chengdu 610064, China
| | - Lei Tang
- National Engineering Research Center for Biomaterials, College of Biomedical Engineering, Sichuan University, Chengdu 610064, China
| | - Yuji Pu
- National Engineering Research Center for Biomaterials, College of Biomedical Engineering, Sichuan University, Chengdu 610064, China
| | - Bin He
- National Engineering Research Center for Biomaterials, College of Biomedical Engineering, Sichuan University, Chengdu 610064, China.
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Insulin-loaded liposomes packaged in alginate hydrogels promote the oral bioavailability of insulin. J Control Release 2023; 353:51-62. [PMID: 36410613 DOI: 10.1016/j.jconrel.2022.11.032] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2022] [Revised: 11/11/2022] [Accepted: 11/16/2022] [Indexed: 11/24/2022]
Abstract
Compared to subcutaneous injections, oral administration of insulin would be a preferred route of drug administration for diabetic patients. For oral delivery, both liposomes and alginate hydrogels face many challenges, including early burst release of the encapsulated drug and poor intestinal drug absorption. Also, adhesion to the intestinal mucosa remains weak, which all result in a low bioavailability of the payload. This study reports on an alginate hydrogel loaded with liposomes for oral insulin administration. Liposomes (Lip) loaded with arginine-insulin complexes (AINS) were incorporated into a hydrogel prepared from cysteine modified alginate (Cys-Alg) to form liposome-in-alginate hydrogels (AINS-Lip-Gel). An ex vivo study proves that intestinal permeation of AINS and AINS-Lip is approximately 2.0 and 6.0-fold, respectively, higher than that of free insulin. The hydrogel retarded early release of insulin (∼30%) from the liposomes and enhanced the intestinal mucosal retention. In vivo experiments revealed that the AINS-Lip-Gel released insulin in a controlled manner and possessed strong hypoglycemic effects. We conclude that liposome-in-alginate hydrogels loaded with AINS represent an attractive strategy for the oral delivery of insulin.
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De Caroli M, Rampino P, Pecatelli G, Girelli CR, Fanizzi FP, Piro G, Lenucci MS. Expression of Exogenous GFP-CesA6 in Tobacco Enhances Cell Wall Biosynthesis and Biomass Production. BIOLOGY 2022; 11:biology11081139. [PMID: 36009766 PMCID: PMC9405164 DOI: 10.3390/biology11081139] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Revised: 07/25/2022] [Accepted: 07/26/2022] [Indexed: 11/24/2022]
Abstract
Simple Summary Cellulose is synthesized at the plasma membrane by an enzymatic complex constituted by different cellulose synthase (CesA) proteins. The overexpression of CesA genes has been assessed for increasing cellulose biosynthesis and plant biomass. In this study, we analyzed transgenic tobacco plants (F31 line), stably expressing the Arabidopsis CesA6 fused to GFP, for possible variations in the cellulose biosynthesis. We found that F31 plants were bigger than the wild-type (wt), showing significant increases of stem height, root length, and leaf area. They bloomed about 3 weeks earlier and yielded more flowers and seeds than wt. In the F31 leaves, the expression of the exogenous GFP-CesA6 prompted the overexpression of all CesAs involved in the synthesis of primary cell wall cellulose and of other proteins responsible for plant cell wall building and remodeling. Instead, secondary cell wall CesAs were not affected. In the F31 stem, showing a 3.3-fold increase of the secondary xylem thickness, both primary and secondary CesAs expression was differentially modulated. Significantly, the amounts of cellulose and matrix polysaccharides increased in the transformed seedlings. The results evidence the potentiality to overexpress primary CesAs in tobacco for biomass production increase. Abstract Improved cellulose biosynthesis and plant biomass represent important economic targets for several biotechnological applications including bioenergy and biofuel production. The attempts to increase the biosynthesis of cellulose by overexpressing CesAs proteins, components of the cellulose synthase complex, has not always produced consistent results. Analyses of morphological and molecular data and of the chemical composition of cell walls showed that tobacco plants (F31 line), stably expressing the Arabidopsis CesA6 fused to GFP, exhibits a “giant” phenotype with no apparent other morphological aberrations. In the F31 line, all evaluated growth parameters, such as stem and root length, leaf size, and lignified secondary xylem, were significantly higher than in wt. Furthermore, F31 line exhibited increased flower and seed number, and an advance of about 20 days in the anthesis. In the leaves of F31 seedlings, the expression of primary CesAs (NtCesA1, NtCesA3, and NtCesA6) was enhanced, as well as of proteins involved in the biosynthesis of non-cellulosic polysaccharides (xyloglucans and galacturonans, NtXyl4, NtGal10), cell wall remodeling (NtExp11 and XTHs), and cell expansion (NtPIP1.1 and NtPIP2.7). While in leaves the expression level of all secondary cell wall CesAs (NtCesA4, NtCesA7, and NtCesA8) did not change significantly, both primary and secondary CesAs were differentially expressed in the stem. The amount of cellulose and matrix polysaccharides significantly increased in the F31 seedlings with no differences in pectin and hemicellulose glycosyl composition. Our results highlight the potentiality to overexpress primary CesAs in tobacco plants to enhance cellulose synthesis and biomass production.
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Affiliation(s)
- Monica De Caroli
- Correspondence: (M.D.C.); (G.P.); Tel.: +39-0832-298613 (M.D.C.); +39-0832-298611 (G.P.)
| | | | | | | | | | - Gabriella Piro
- Correspondence: (M.D.C.); (G.P.); Tel.: +39-0832-298613 (M.D.C.); +39-0832-298611 (G.P.)
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Özbaş Z, Özkahraman B, Akgüner ZP, Bal-Öztürk A. Evaluation of modified pectin/alginate buccal patches with enhanced mucoadhesive properties for drug release systems: In-vitro and ex-vivo study. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2021.102991] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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5
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Gamonpilas C, Buathongjan C, Sangwan W, Rattanaprasert M, Weizman K, Klomtun M, Phonsatta N, Methacanon P. Production of low molecular weight pectins via electron beam irradiation and their potential prebiotic functionality. Food Hydrocoll 2021. [DOI: 10.1016/j.foodhyd.2020.106551] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Wang L, Cheng R, Sun X, Zhao Y, Ge W, Yang Y, Gao Y, Ding Z, Liu J, Zhang J. Preparation and Gut Microbiota Modulatory Property of the Oligosaccharide Riclinoctaose. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:3667-3676. [PMID: 33750134 DOI: 10.1021/acs.jafc.0c07783] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
In relation to available polysaccharides, oligosaccharides have a low molecular weight, less viscosity, and complete water solubility. These properties endow oligosaccharides with significant biological properties including the microbiota regulation ability. In this study, a homogeneous oligooctasaccharide, riclinoctaose, was biosynthesized from succinylglycan riclin by enzymatic degradation. Monosaccharide composition, Fourier-transform infrared, electrospray ionization mass spectrometry, and nuclear magnetic resonance spectrometry analysis indicated that riclinoctaose is an oligooctasaccharide consisting of one galactose and seven glucose residues, with a pyruvate group linked to the terminal glucose residue. The effects of dietary riclinoctaose on the gut microbiota of mice were evaluated. We found that the dietary riclinoctaose significantly altered intestinal microbiota with the increased growth of beneficial intestinal bacteria including Bifidobacteria and Lactobacillus and decreased the abundance of pernicious bacteria such as Gammaproteobacteria. The level of short-chain fatty acids (SCFAs) was significantly elevated in the riclinoctaose cecum. Our results suggested that riclinoctaose as a prebiotic may have a great potential application in functional foods.
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Affiliation(s)
- Lei Wang
- Center for Molecular Metabolism, Nanjing University of Science & Technology, Nanjing 210094, China
| | - Rui Cheng
- Center for Molecular Metabolism, Nanjing University of Science & Technology, Nanjing 210094, China
| | - Xiaqing Sun
- Center for Molecular Metabolism, Nanjing University of Science & Technology, Nanjing 210094, China
| | - Yang Zhao
- Center for Molecular Metabolism, Nanjing University of Science & Technology, Nanjing 210094, China
| | - Wenhao Ge
- Center for Molecular Metabolism, Nanjing University of Science & Technology, Nanjing 210094, China
| | - Yunxia Yang
- Center for Molecular Metabolism, Nanjing University of Science & Technology, Nanjing 210094, China
| | - Yan Gao
- Center for Molecular Metabolism, Nanjing University of Science & Technology, Nanjing 210094, China
| | - Zhao Ding
- Center for Molecular Metabolism, Nanjing University of Science & Technology, Nanjing 210094, China
| | - Junhao Liu
- Center for Molecular Metabolism, Nanjing University of Science & Technology, Nanjing 210094, China
| | - Jianfa Zhang
- Center for Molecular Metabolism, Nanjing University of Science & Technology, Nanjing 210094, China
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Milliasseau D, Jeftić J, Pessel F, Plusquellec D, Benvegnu T. Transformation of Pectins into Non-Ionic or Anionic Surfactants Using a One-Pot and Cascade Mode Process. Molecules 2021; 26:molecules26071956. [PMID: 33807131 PMCID: PMC8036317 DOI: 10.3390/molecules26071956] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 03/23/2021] [Accepted: 03/23/2021] [Indexed: 11/20/2022] Open
Abstract
The present article describes the one-pot synthesis of double- and single-tailed surfactants by a cascade process that involves the hydrolysis/butanolysis of pectins into butyl galacturonate monosaccharides followed by transesterification/transacetalisation processes with fatty alcohols, and subsequent aqueous basic and acid treatments. The cascade mode allows the depolymerisation to proceed more efficiently, and the purification conditions are optimised to make the production of single-tailed surfactants more manufacturable. These products in a pure form or as mixtures with alkyl glycosides resulting from butanolysis and transglycosylation of pectin-derived hexoses, exhibit attractive surface-tension properties, especially for the n-oleyl ᴅ-galactosiduronic acid products. In addition, a readily biodegradability and an absence of aquatic ecotoxicity are shown for the galacturonic acid derivatives possessing an oleyl alkyl chain at the anomeric position.
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Affiliation(s)
- Damien Milliasseau
- Univ. Rennes, CNRS, ISCR-UMR 6226, Ecole Nationale Supérieure de Chimie de Rennes, F-35000 Rennes, France; (D.M.); (J.J.)
| | - Jelena Jeftić
- Univ. Rennes, CNRS, ISCR-UMR 6226, Ecole Nationale Supérieure de Chimie de Rennes, F-35000 Rennes, France; (D.M.); (J.J.)
| | - Freddy Pessel
- SurfactGreen, 11 allée de Beaulieu, CS 50837, CEDEX 7, F-35708 Rennes, France;
| | - Daniel Plusquellec
- Univ. Rennes, CNRS, ISCR-UMR 6226, Ecole Nationale Supérieure de Chimie de Rennes, F-35000 Rennes, France; (D.M.); (J.J.)
- Correspondence: (T.B.); (D.P.); Tel.: +33-2-23-23-80-60 (T.B.); +33-6-80-06-11-51 (D.P.)
| | - Thierry Benvegnu
- Univ. Rennes, CNRS, ISCR-UMR 6226, Ecole Nationale Supérieure de Chimie de Rennes, F-35000 Rennes, France; (D.M.); (J.J.)
- Correspondence: (T.B.); (D.P.); Tel.: +33-2-23-23-80-60 (T.B.); +33-6-80-06-11-51 (D.P.)
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Cao J, Yang J, Yue K, Wang Z. Preparation of modified citrus pectin (MCP) using an advanced oxidation process with hydroxyl radicals generated by UV-H2O2. Food Hydrocoll 2020. [DOI: 10.1016/j.foodhyd.2019.105587] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Abstract
The development of biorefinery processes to platform chemicals for most lignocellulosic substrates, results in side processes to intermediates such as oligosaccharides. Agrofood wastes are most amenable to produce such intermediates, in particular, cellooligo-saccharides (COS), pectooligosaccharides (POS), xylooligosaccharides (XOS) and other less abundant oligomers containing mannose, arabinose, galactose and several sugar acids. These compounds show a remarkable bioactivity as prebiotics, elicitors in plants, food complements, healthy coadyuvants in certain therapies and more. They are medium to high added-value compounds with an increasing impact in the pharmaceutical, nutraceutical, cosmetic and food industries. This review is focused on the main production processes: autohydrolysis, acid and basic catalysis and enzymatic saccharification. Autohydrolysis of food residues at 160–190 °C leads to oligomer yields in the 0.06–0.3 g/g dry solid range, while acid hydrolysis of pectin (80–120 °C) or cellulose (45–180 °C) yields up to 0.7 g/g dry polymer. Enzymatic hydrolysis at 40–50 °C of pure polysaccharides results in 0.06–0.35 g/g dry solid (DS), with values in the range 0.08–0.2 g/g DS for original food residues.
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DEVELOPMENT OF THE NEW PRODUCTION METHOD OF HEALTHFUL CRYOFROZEN NANOADDITIVES OF CHLOROPHYLL-CONTAINING VEGETABLES USING CRYOMECHANICAL PROCESSES. EUREKA: LIFE SCIENCES 2019. [DOI: 10.21303/2504-5695.2019.001065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The aim of the work is to develop the new production method of healthful cryofrozen nanoadditives of chlorophyll-containing vegetables (CCV) in the nanosize form, using liquid and gas-like nitrogen with a high degree of chlorophyll preservation, without losses at defrost and without synthetic admixtures. The new method is based on using cryogenic “shock” freezing and low-temperature comminution as an innovation. Their joint use is accompanied by cryodestruction and cryomechanochemistry processes. The offered method gives a possibility not only to preserve chlorophylls, carotenoids and other BAS of initial raw materials, but also to transform hidden forms of BAS, bound with biopolymers, in free more completely.
Chlorophyll-containing vegetables were used as raw materials: spinach leaves, verdure of celery and parsley. There is offered and developed the new production method of healthful cryofrozen nanoadditives of CCV, allowing not only to preserve chlorophyll, β-carotene and other BAS of initial raw materials, but also to release their hidden, inactive forms more fully. The last ones are bound in fresh CCV in nanoassociates and nanopolymers. At getting cryofrozen additives, there takes extraction (or release) of BAS into the free nanoform, easily assimilated by the human organism. It is established, that fresh CCV contain 3.0…3.5 times more bound inactive chlorophyll, than free one.
It is established, that the use of the new method of processing CCV in cryofrozen additives at cryogenic “shock” freezing to temperature within a product –35…–40 °С and fine-dispersed comminution result in the high degree of releasing hidden forms of chlorophylls and other BAS from vegetables. Their mass share is 2.5…3.5 times more than in fresh vegetables. At developing the new method of getting cryofrozen additives, the essential amount of hidden (bound) forms of chlorophylls and other BAS in CCV were discovered – hidden reserves of raw materials, unknown to the scientific community. It is established, that the storage term of obtained cryofrozen additives of CCV is 12 months, during which chlorophyll is fully preserved. At the same time it is demonstrated, that at defrost of additives with CCV, losses of chlorophyll and other BAS are not observed.
There are also studied enzymatic processes at CCV cryoprocessing, especially the activity of oxidizing enzymes (peroxidase and polyphenol oxidase) that influence a preservation degree of chlorophyll and other BAS. It is established, that at freezing CCV to –18 °С in a product, inactivation of oxidizing enzymes doesn’t take place. At that at further defrost of CCV, there takes place the increase of enzymatic activity in 1.4…1.5 times, comparing with fresh chlorophyll-containing vegetables. It is established, that at cryodestruction of CCV to –35…–40 °С there takes place the complete inactivation of oxidizing enzymes, which activity is not renewed at defrosting a product.
The obtained cryofrozen additives with CCV in the nanosize form are a source of the unique complex of phytocomponents – chlorophyll, β-carotene, vitamin C, polyphenol compounds and other BAS and don’t have analogues in the world. Cryoadditives with CCV are five in one: BAS source, coloring agents, stiffeners, structure-formers and gel-formers. A green line of healthy products is developed, using cryoadditives of CCV: nanosorbets, nanobeverages, sponge cakes, sauces-dressings, cheese desserts and so on
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Chen T, Wang H, Chu Y, Boyer C, Liu J, Xu J. Photo‐Induced Depolymerisation: Recent Advances and Future Challenges. CHEMPHOTOCHEM 2019. [DOI: 10.1002/cptc.201900166] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Tao Chen
- College of Materials Science and Engineering Institute for Graphene Applied Technology Innovation Collaborative Innovation Center for Marine Biomass Fibers Materials and Textiles of Shandong Province Qingdao University Qingdao 266071 China
- Centre for Advanced Macromolecular Design and Australian Centre for Nanomedicine School of Chemical Engineering UNSW Sydney NSW 2052 Australia
| | - Huining Wang
- College of Materials Science and Engineering Institute for Graphene Applied Technology Innovation Collaborative Innovation Center for Marine Biomass Fibers Materials and Textiles of Shandong Province Qingdao University Qingdao 266071 China
| | - Yingying Chu
- Centre for Advanced Macromolecular Design and Australian Centre for Nanomedicine School of Chemical Engineering UNSW Sydney NSW 2052 Australia
| | - Cyrille Boyer
- Centre for Advanced Macromolecular Design and Australian Centre for Nanomedicine School of Chemical Engineering UNSW Sydney NSW 2052 Australia
| | - Jingquan Liu
- College of Materials Science and Engineering Institute for Graphene Applied Technology Innovation Collaborative Innovation Center for Marine Biomass Fibers Materials and Textiles of Shandong Province Qingdao University Qingdao 266071 China
| | - Jiangtao Xu
- Centre for Advanced Macromolecular Design and Australian Centre for Nanomedicine School of Chemical Engineering UNSW Sydney NSW 2052 Australia
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Mohd Thani N, Mustapa Kamal SM, Sulaiman A, Taip FS, Omar R, Izhar S. Sugar Recovery from Food Waste via Sub-critical Water Treatment. FOOD REVIEWS INTERNATIONAL 2019. [DOI: 10.1080/87559129.2019.1636815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Nurfatimah Mohd Thani
- Department of Process and Food Engineering, Faculty of Engineering, Universiti Putra Malaysia, Serdang, Malaysia
| | - Siti Mazlina Mustapa Kamal
- Department of Process and Food Engineering, Faculty of Engineering, Universiti Putra Malaysia, Serdang, Malaysia
| | - Alifdalino Sulaiman
- Department of Process and Food Engineering, Faculty of Engineering, Universiti Putra Malaysia, Serdang, Malaysia
| | - Farah Saleena Taip
- Department of Process and Food Engineering, Faculty of Engineering, Universiti Putra Malaysia, Serdang, Malaysia
| | - Rozita Omar
- Department of Chemical and Environmental Engineering, Faculty of Engineering, Universiti Putra Malaysia, Serdang, Malaysia
| | - Shamsul Izhar
- Department of Chemical and Environmental Engineering, Faculty of Engineering, Universiti Putra Malaysia, Serdang, Malaysia
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Hagiwara Y, Higashi K, Hagita H, Uehara T, Ito D, Hanaoka H, Suzuki H, Arano Y, Toida T. Preparation of 99mTc-Labeled Mannan-S-Cysteine and Effect of Molecular Size of Mannan on Its Biodistribution. Biol Pharm Bull 2019; 42:819-826. [PMID: 31061325 DOI: 10.1248/bpb.b19-00026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Macrophage mannose receptor (MMR/CD206) is a promising target for the detection and identification of sentinel lymph node (SLN). MMR-targeting probes have been developed using mannosylated dextran, however, impairment of efficient targeting of SLN was often caused because of retention of injection site in which macrophages and dendritic cells exist. In this study, we prepared new MMR-targeting probes from yeast mannan (85 kDa), and its bioditribution was investigated. In-vivo evaluation showed that 11.9% of injected dose of 99mTc-labeled mannan-S-cysteines (99mTc-MSCs) was accumulated in popliteal lymph node (the SLN in this model), however, significant level of radioactivity (approximately 80%) was remained in injection site. Interestingly, 99mTc-labeled low molecular weight mannan-S-cysteine mannan (99mTc-LSC) prepared from 50 and 25 kDa mannan showed a decreased specific accumulation of 99mTc-LSC in the popliteal lymph node, while the radioactivity at the injection site remained unchanged. These results suggest that the molecular size, or nature/shape of the sugar chain is important for the specific accumulation of 99mTc-MSC in popliteal lymph node.
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Affiliation(s)
- Yuki Hagiwara
- Graduate School of Pharmaceutical Sciences, Chiba University
| | - Kyohei Higashi
- Graduate School of Pharmaceutical Sciences, Chiba University.,Faculty of Pharmaceutical Sciences, Tokyo University of Science
| | - Hiraku Hagita
- Graduate School of Pharmaceutical Sciences, Chiba University
| | - Tomoya Uehara
- Graduate School of Pharmaceutical Sciences, Chiba University
| | - Daichi Ito
- Graduate School of Pharmaceutical Sciences, Chiba University
| | | | - Hiroyuki Suzuki
- Graduate School of Pharmaceutical Sciences, Chiba University
| | - Yasushi Arano
- Graduate School of Pharmaceutical Sciences, Chiba University
| | - Toshihiko Toida
- Graduate School of Pharmaceutical Sciences, Chiba University
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Li J, Li S, Liu S, Wei C, Yan L, Ding T, Linhardt RJ, Liu D, Ye X, Chen S. Pectic oligosaccharides hydrolyzed from citrus canning processing water by Fenton reaction and their antiproliferation potentials. Int J Biol Macromol 2018; 124:1025-1032. [PMID: 30465847 DOI: 10.1016/j.ijbiomac.2018.11.166] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Revised: 11/11/2018] [Accepted: 11/17/2018] [Indexed: 02/02/2023]
Abstract
Citrus canning processing water contains a valuable and renewable source of biopolymers and bioactive compounds including pectic polysaccharides. Upgrading these processing wastes can not only alleviate environmental pollution but also add value to the commodity's production. In a previous study we recovered pectic polysaccharides from citrus canning processing water. In the present study, pectic polysaccharides recycled from citrus canning processing water was depolymerized by an optimized Fenton system. The hydrolyzate was fractionated via size-exclusion chromatography into six fractions: 500 Da < LMP1 < 3 kDa; 3 kDa < LMP2 < 5 kDa; 5 kDa < LMP3 < 12 kDa; 12 kDa < LMP4 < 25 kDa; 25 kDa < LMP5 < 100 kDa and LMP6 > 10 wDa. Structure analyses showed that LMP1 were homogalacturonans-enriched non-esterified polysaccharides. While LMP2 contained both HG and rhamnogalacturonan-I (RG-I). Further antitumor assay showed that in comparison with the native pectic polysaccharide with moderate antitumor activity, both LMP1 and LMP2 possessed significant antitumor activity, while the inhibitory effect of LMP1 was higher than that of LMP2, suggesting that the biological properties of LMPs was influenced by structural characteristics, including molecular weight and monosaccharide composition.
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Affiliation(s)
- Junhui Li
- Zhejiang Key Laboratory for Agro-Food Processing, Department of Food Science and Nutrition, Fuli Institute of Food Science, Zhejiang University, Hangzhou 310058, China
| | - Shan Li
- Zhejiang Key Laboratory for Agro-Food Processing, Department of Food Science and Nutrition, Fuli Institute of Food Science, Zhejiang University, Hangzhou 310058, China
| | - Shanshan Liu
- Zhejiang Key Laboratory for Agro-Food Processing, Department of Food Science and Nutrition, Fuli Institute of Food Science, Zhejiang University, Hangzhou 310058, China
| | - Chaoyang Wei
- Zhejiang Key Laboratory for Agro-Food Processing, Department of Food Science and Nutrition, Fuli Institute of Food Science, Zhejiang University, Hangzhou 310058, China
| | - Lufeng Yan
- Zhejiang Key Laboratory for Agro-Food Processing, Department of Food Science and Nutrition, Fuli Institute of Food Science, Zhejiang University, Hangzhou 310058, China
| | - Tian Ding
- Zhejiang Key Laboratory for Agro-Food Processing, Department of Food Science and Nutrition, Fuli Institute of Food Science, Zhejiang University, Hangzhou 310058, China
| | - Robert J Linhardt
- Center for Biotechnology & Interdisciplinary Studies, Department of Chemistry & Chemical Biology, Rensselaer Polytechnic Institute, Biotechnology Center 4005, Troy, NY 12180, USA
| | - Donghong Liu
- Zhejiang Key Laboratory for Agro-Food Processing, Department of Food Science and Nutrition, Fuli Institute of Food Science, Zhejiang University, Hangzhou 310058, China
| | - Xingqian Ye
- Zhejiang Key Laboratory for Agro-Food Processing, Department of Food Science and Nutrition, Fuli Institute of Food Science, Zhejiang University, Hangzhou 310058, China
| | - Shiguo Chen
- Zhejiang Key Laboratory for Agro-Food Processing, Department of Food Science and Nutrition, Fuli Institute of Food Science, Zhejiang University, Hangzhou 310058, China.
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C. M, B.R. K, G. S, N. MK, M. S. Carboxymethylation of pectin: Optimization, characterization and in-vitro drug release studies. Carbohydr Polym 2018; 194:311-318. [DOI: 10.1016/j.carbpol.2018.04.042] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Revised: 03/22/2018] [Accepted: 04/10/2018] [Indexed: 11/15/2022]
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Zheng J, Zeng R, Kan J, Zhang F. Effects of ultrasonic treatment on gel rheological properties and gel formation of high-methoxyl pectin. J FOOD ENG 2018. [DOI: 10.1016/j.jfoodeng.2018.03.009] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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DEVELOPMENT OF A NEW METHOD OF STORAGE AND MAXIMUM SEPARATION OF CHLOROPHILS FROM CHLOROPHYLCONTAINING VEGETABLES AT RECEPTION OF HEALTHFULL NANOPRODUCTS. EUREKA: LIFE SCIENCES 2018. [DOI: 10.21303/2504-5695.2018.00616] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The aim of the work is the development of a new way of deep processing of chlorophyll-containing vegetables that gives a possibility not only to preserve chlorophylls a and b and other biologically active substances (BAS) of raw materials, but also to transform hidden bound (inactive) forms of chlorophyll in the free easy-digestible form at getting steam-thermally processed semi-products and healthy food products in the nanoform.
For achieving the aim, the complex effect of steam-thermal processing and mechanolysis at fine-dyspersed comminution using the new equipment was applied as an innovation for thermal processing and comminution.
There was developed the new method of getting healthy products of chlorophyll-containing vegetables (broccoli, spinach, Brussels cabbage, green leguminous haricot bean), steam-thermally processed (by hot steam) in the steam-convectional stove and fine-dyspersed with high contents of chlorophylls and other BAS and prebiotics. The method is based on the complex effect of processes of thermodestruction, mechanodestruction and non-enzymatic catalysis on raw materials at fine-dyspersed comminution. It was demonstrated, that at steam thermal processing of chlorophyll-containing vegetables (CCV) in the steam-convectomat during 5 minutes, there takes place not only preservation of chlorophylls a and b, but more full separation (in 1,33…1,4 times) from the hidden (bound) form, comparing with fresh vegetables. There was elucidated the mechanism of this process. The more full extraction of hidden forms of β-carotene (2 times more than in fresh CCV) takes place in parallel.
The essentially more effect of transforming hidden forms was revealed at fine-dyspersed comminution of steam-thermally processed CCV. It was demonstrated, that thermally processed nanoproducts of CCV contain 2…2,1 more chlorophylls a and b, 2,0…3,3 times more carotenoids in the bound form than fresh vegetables.
The quality of obtained new types of fine-dyspersated steam-thermally processed green products as puree and soups-purees of CCV exceeds one of known analogues by contents of chlorophylls a and b, β-carotene and other BAS, which are in nanosize easy-digestible form.
Using new types of fine-dyspersated purees of CCV, there was developed the new green line of healthy nanoproducts: soups-purees, nanodrinks, nanosorbets, sauces-dressings, sauces-deeps, ice-cream, snacks and so on. It was demonstrated, that new products exceed existing analogues by BAS content (chlorophylls, β-carotene, L-ascorbic acid, phenol compounds).
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Zhu WZ, Yang GP, Zhang HH. Photochemical behavior of dissolved and colloidal organic matter in estuarine and oceanic waters. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 607-608:214-224. [PMID: 28692892 DOI: 10.1016/j.scitotenv.2017.06.163] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Revised: 06/14/2017] [Accepted: 06/20/2017] [Indexed: 05/12/2023]
Abstract
Chromophoric dissolved organic matter (CDOM), carbohydrates, and amino acids were analyzed to investigate the photochemistry of total dissolved (<0.22μm) organic matter (DOM), high-molecular-weight (HMW, 1kDa-0.22μm) DOM and low-molecular-weight (LMW, <1kDa) DOM at stations in the Yangtze River and its coastal area, and in the Western Pacific Ocean. Results revealed that the humic-like and tryptophan-like CDOM fluorescent components in riverine, coastal, and oceanic surface waters were photodegraded during irradiation. However, the photochemical behavior of tyrosine-like component was obscured by the excessive fluorescence intensities of humic- and tryptophan-like fluorescent components. Light sensitivity varied depending on the source material; terrestrially derived DOM was more susceptible to irradiation than autochthonous DOM. In contrast to the expected photodegradation of CDOM, photo-induced synthetic reaction transformed the LMW matters to polysaccharides (PCHO) and degradation reaction decomposed the HMW DOM to Monosaccharides. Colloidal DOM preferentially underwent photodegradation, whereas permeate DOM mainly photosynthesized PCHO. The total hydrolysable amino acid (THAA) pool changed because of the additional input by the photodegradation of DOM or THAA itself. The compositions of THAA changed during the irradiation experiments, indicating that the different photochemical behavior of individual amino acids were related to their different original photoreactivities; the relatively stable amino acids (e.g., Ser and Gly) significantly accumulated during irradiation, whereas photo-active aromatic amino acids (e.g. Tyr and His) were prone to photodegradation. The data presented here demonstrated that irradiation significantly influence the conversion between dissolved and colloid organic matter. These results can promote the understanding of irradiation effect on the carbon and nitrogen cycle in riverine, estuarine and oceanic ecosystems.
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Affiliation(s)
- Wen-Zhuo Zhu
- Key Laboratory of Marine Chemistry Theory and Technology, Ocean University of China, Ministry of Education/Qingdao Collaborative Innovation Center of Marine Science and Technology, Qingdao 266100, China; Institute of Marine Chemistry, Ocean University of China, Qingdao 266100, China
| | - Gui-Peng Yang
- Key Laboratory of Marine Chemistry Theory and Technology, Ocean University of China, Ministry of Education/Qingdao Collaborative Innovation Center of Marine Science and Technology, Qingdao 266100, China; Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266200, China; Institute of Marine Chemistry, Ocean University of China, Qingdao 266100, China.
| | - Hong-Hai Zhang
- Key Laboratory of Marine Chemistry Theory and Technology, Ocean University of China, Ministry of Education/Qingdao Collaborative Innovation Center of Marine Science and Technology, Qingdao 266100, China; Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266200, China
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DEVELOPMENT OF THE EXTRACTION METHOD OF INACTIVE FORMS OF PECTIN SUBSTANCES FROM FRUITS TO EASY-DIGESTIBLE ACTIVE FORM DURING THE OBTAINING OF NANOFOOD. EUREKA: LIFE SCIENCES 2017. [DOI: 10.21303/2504-5695.2017.00520] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The aim of the work is development of a unique method for deep processing of fruits and vegetables with a high content of sparingly soluble pectin substances, which makes it possible to remove pectic substances from inactive form and transform them into an easily digestible active form when obtaining natural semi-finished products and food products in nanosized form. To achieve the aim, a complex effect on the raw material of steam-thermal treatment or cryogenic shock freezing and fine-dispersed grinding is used as an innovation.
A new method for obtaining finely dispersed additives and health products from fruits and vegetables with a high content of biologically active substances (BAS) and prebiotic substances is developed, which is based on a complex effect on raw materials of processes of steam-thermal or cryogenic treatment of raw materials and fine-dispersed grinding, which is accompanied by destruction, mechanochemistry, non-enzymatic catalysis. It is found that when these processes are activated, pectic substances are activated, more complete extraction from raw materials (4.5 ... 7.3 times) from a latent form and transformation into a soluble form. The mechanism of these processes is disclosed, recommendations for the creation of recreational nanoproducts are developed. It is shown that, in parallel, non-enzymatic catalysis (up to 70%) of hardly soluble pectic substances in individual monomers takes place, that is, transformation into a soluble, easily digestible form.
The increase and seizures of latent forms of biologically active substances in finely dispersed frozen and heat-treated purees from fruit compared with fresh raw materials is established. The increase is respectively 1.5 ... 4.0 times and 1.5 ... 3.0 times. The quality of the obtained new types of fine mashed potatoes exceeds the known analogs for BAS content and technological characteristics. New types of purees are in a nanoscale, easily digestible form.
With the use of new types of finely dispersed additives, a wide range of products for health-improving nutrition has been developed with a record content of natural BASs (new types of nano-lipids, nanosorb products, milk-vegetable cocktails, fillings for confectionery and extruded products, curd desserts, bakery products, snacks - falafel, creams, etc.).
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21
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Gómez B, Gullón B, Yáñez R, Schols H, Alonso JL. Prebiotic potential of pectins and pectic oligosaccharides derived from lemon peel wastes and sugar beet pulp: A comparative evaluation. J Funct Foods 2016. [DOI: 10.1016/j.jff.2015.10.029] [Citation(s) in RCA: 110] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
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22
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Panagos CG, August DP, Jesson C, Uhrín D. Photochemical depolymerisation of dermatan sulfate and analysis of the generated oligosaccharides. Carbohydr Polym 2015; 140:13-9. [PMID: 26876822 DOI: 10.1016/j.carbpol.2015.11.078] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2015] [Revised: 11/27/2015] [Accepted: 11/30/2015] [Indexed: 02/02/2023]
Abstract
Radical depolymerisation is the method of choice for the depolymerisation of glycosaminoglycans (GAGs), especially when enzymatic depolymerisation cannot be performed due to the lack of suitable enzymes. The established Fenton type free radical depolymerisation generates radicals from a solution of H2O2 in the presence of Cu(2+) or Fe(2+). When applied to dermatan sulfate (DS), the Fenton type depolymerisation of DS (Panagos, Thomson, Bavington, & Uhrin, 2012) produced exclusively oligosaccharides with reducing end GalNAc, which was partially oxidised to acetylgalactosaminic acid. We report here the results of the TiO2 catalysed photochemical depolymerisation of DS. NMR analysis of these DS oligosaccharides revealed the presence of reducing end IdoA, observed for the first time. The reducing end acetylgalactosaminic acid was also detected. The photochemical depolymerisation method thus enables preparation of new types of GAG oligosaccharides suitable for further biochemical and biological investigation.
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Affiliation(s)
- Charalampos G Panagos
- EastChem School of Chemistry, The University of Edinburgh, King's Buildings, David Brewster Road, Edinburgh EH9 3FJ, United Kingdom; GlycoMar Ltd, European Centre for Marine Biotechnology, Oban, Scotland PA37 1QA, United Kingdom
| | - David P August
- EastChem School of Chemistry, The University of Edinburgh, King's Buildings, David Brewster Road, Edinburgh EH9 3FJ, United Kingdom
| | - Christine Jesson
- GlycoMar Ltd, European Centre for Marine Biotechnology, Oban, Scotland PA37 1QA, United Kingdom
| | - Dušan Uhrín
- EastChem School of Chemistry, The University of Edinburgh, King's Buildings, David Brewster Road, Edinburgh EH9 3FJ, United Kingdom.
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23
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Chen J, Liu W, Liu CM, Li T, Liang RH, Luo SJ. Pectin Modifications: A Review. Crit Rev Food Sci Nutr 2015; 55:1684-98. [DOI: 10.1080/10408398.2012.718722] [Citation(s) in RCA: 120] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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24
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de Moura FA, Macagnan FT, da Silva LP. Oligosaccharide production by hydrolysis of polysaccharides: a review. Int J Food Sci Technol 2014. [DOI: 10.1111/ijfs.12681] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Fernanda A. de Moura
- Departamento de Tecnologia e Ciência de Alimentos; Centro de Ciências Rurais; Universidade Federal de Santa Maria (UFSM); Av. Roraima - 1000 Camobi CEP 97105-900 Santa Maria RS Brazil
| | - Fernanda T. Macagnan
- Departamento de Tecnologia e Ciência de Alimentos; Centro de Ciências Rurais; Universidade Federal de Santa Maria (UFSM); Av. Roraima - 1000 Camobi CEP 97105-900 Santa Maria RS Brazil
| | - Leila P. da Silva
- Departamento de Zootecnia; Centro de Ciências Rurais; Universidade Federal de Santa Maria (UFSM); Av. Roraima - 1000 Camobi CEP 97105-900 Santa Maria RS Brazil
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25
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Speltini A, Sturini M, Dondi D, Annovazzi E, Maraschi F, Caratto V, Profumo A, Buttafava A. Sunlight-promoted photocatalytic hydrogen gas evolution from water-suspended cellulose: a systematic study. Photochem Photobiol Sci 2014; 13:1410-9. [DOI: 10.1039/c4pp00128a] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Photocatalytic H2 evolution from water in the presence of cellulose as the sacrificial agent is studied. The photoreaction proceeds under sunlight also using waste cellulosic biomass, i.e. rice husk.
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Affiliation(s)
- Andrea Speltini
- Department of Chemistry
- University of Pavia
- 27100 Pavia, Italy
| | - Michela Sturini
- Department of Chemistry
- University of Pavia
- 27100 Pavia, Italy
| | - Daniele Dondi
- Department of Chemistry
- University of Pavia
- 27100 Pavia, Italy
| | | | | | - Valentina Caratto
- Department of Chemistry and Industrial Chemistry
- University of Genoa
- 16146 Genova, Italy
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Gullón B, Gómez B, Martínez-Sabajanes M, Yáñez R, Parajó J, Alonso J. Pectic oligosaccharides: Manufacture and functional properties. Trends Food Sci Technol 2013. [DOI: 10.1016/j.tifs.2013.01.006] [Citation(s) in RCA: 95] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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27
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Nano photo scouring and nano photo bleaching of raw cellulosic fabric using nano TiO2. Int J Biol Macromol 2012; 50:1018-25. [DOI: 10.1016/j.ijbiomac.2012.02.018] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2011] [Revised: 02/09/2012] [Accepted: 02/18/2012] [Indexed: 11/18/2022]
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28
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Higashi K, Hosoyama S, Ohno A, Masuko S, Yang B, Sterner E, Wang Z, Linhardt RJ, Toida T. Photochemical Preparation of a Novel Low Molecular Weight Heparin. Carbohydr Polym 2012; 67:1737-1743. [PMID: 22205826 PMCID: PMC3245882 DOI: 10.1016/j.carbpol.2011.09.087] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Commercial low molecular weight heparins (LMWHs) are prepared by several methods including peroxidative cleavage, nitrous acid cleavage, chemical ß-elimination, and enzymatic β-elimination. The disadvantages of these methods are that strong reaction conditions or harsh chemicals are used and these can result in decomposition or modification of saccharide units within the polysaccharide backbone. These side-reactions reduce product quality and yield. Here we show the partial photolysis of unfractionated heparin can be performed in distillated water using titanium dioxide (TiO(2)). TiO(2) is a catalyst that can be easily removed by centrifugation or filtration after the photochemical reaction takes place, resulting in highly pure products. The anticoagulant activity of photodegraded LMWH (pLMWH) is comparable to the most common commercially available LMWHs (i.e., Enoxaparin and Dalteparin). (1)H NMR spectra obtained show that pLMWH maintains the same core structure as unfractionated heparin. This photochemical reaction was investigated using liquid chromatography/mass spectrometry (LC/MS) and unlike other processes commonly used to prepare LMWHs, photochemically preparation affords polysaccharide chains of reduced length having both odd and even of saccharide residues.
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Affiliation(s)
- Kyohei Higashi
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Saori Hosoyama
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Asami Ohno
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Sayaka Masuko
- Department of Chemistry and Chemical Biology, Centre for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York 12180, USA
| | - Bo Yang
- Department of Chemistry and Chemical Biology, Centre for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York 12180, USA
| | - Eric Sterner
- Department of Chemical and Biological Engineering, Centre for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York 12180, USA
| | - Zhenyu Wang
- Department of Biology, Centre for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York 12180, USA
| | - Robert J. Linhardt
- Department of Chemistry and Chemical Biology, Centre for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York 12180, USA
- Department of Chemical and Biological Engineering, Centre for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York 12180, USA
- Department of Biology, Centre for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York 12180, USA
| | - Toshihiko Toida
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8675, Japan
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29
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Higashi K, Ly M, Wang Z, Masuko S, Bhaskar U, Sterner E, Zhang F, Toida T, Dordick JS, Linhardt RJ. Controlled Photochemical Depolymerization of K5 Heparosan, a Bioengineered Heparin Precursor. Carbohydr Polym 2011; 86:1365-1370. [PMID: 21841848 PMCID: PMC3153860 DOI: 10.1016/j.carbpol.2011.06.042] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Heparosan is a polysaccharide, which serves as the critical precursor in heparin biosynthesis and chemoenzymatic synthesis of bioengineered heparin. Because the molecular weight of microbial heparosan is considerably larger than heparin, the controlled depolymerization of microbial heparosan is necessary prior to its conversion to bioengineered heparin. We have previously reported that other acidic polysaccharides could be partially depolymerized with maintenance of their internal structure using a titanium dioxide-catalyzed photochemical reaction. This photolytic process is characterized by the generation of reactive oxygen species that oxidize individual saccharide residues within the polysaccharide chain. Using a similar approach, a microbial heparosan from Escherichia coli K5 of molecular weight >15,000 was depolymerized to a heparosan of molecular weight 8,000. The (1)H-NMR spectra obtained showed that the photolyzed heparosan maintained the same structure as the starting heparosan. The polysaccharide chains of the photochemically depolymerized heparosan were also characterized by electrospray ionization-Fourier-transform mass spectrometry. While the chain of K5 heparosan starting material contained primarily an even number of saccharide residues, as a result of coliphage K5 lyase processing, both odd and even chain numbers were detected in the photochemically-depolymerized heparosan. These results suggest that the photochemical depolymerization of heparosan was a random process that can take place at either the glucuronic acid or the N-acetylglucosamine residue within the heparosan polysaccharide.
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Affiliation(s)
- Kyohei Higashi
- Graduate School of Pharmaceutical Sciences Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Mellisa Ly
- Department of Chemistry and Chemical Biology, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York 12180
| | - Zhenyu Wang
- Department of Biology, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York 12180, USA
| | - Sayaka Masuko
- Department of Chemistry and Chemical Biology, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York 12180
| | - Ujjwal Bhaskar
- Department of Chemical and Biological Engineering, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York 12180
| | - Eric Sterner
- Department of Chemical and Biological Engineering, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York 12180
| | - Fuming Zhang
- Department of Chemical and Biological Engineering, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York 12180
| | - Toshihiko Toida
- Graduate School of Pharmaceutical Sciences Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Jonathan S. Dordick
- Department of Biology, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York 12180, USA
- Department of Chemical and Biological Engineering, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York 12180
- Department of Biomedical Engineering, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York 12180
| | - Robert J. Linhardt
- Department of Chemistry and Chemical Biology, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York 12180
- Department of Biology, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York 12180, USA
- Department of Chemical and Biological Engineering, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York 12180
- Department of Biomedical Engineering, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York 12180
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