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Ali MA, Singh M, Zhang S, Kaneko D, Okajima MK, Kaneko T. Metal-Assisted Injection Spinning of Ultra Strong Fibers from Megamolecular LC Polysaccharides. Polymers (Basel) 2024; 16:1099. [PMID: 38675018 PMCID: PMC11054878 DOI: 10.3390/polym16081099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Revised: 04/09/2024] [Accepted: 04/10/2024] [Indexed: 04/28/2024] Open
Abstract
The molecular orientation of liquid crystalline (LC) hydrogels has the potential to induce a range of functionalities that can deliver great mechanical strength. Sacran is a supergiant LC polysaccharide isolated from the cyanobacterium Aphanothece sacrum with a high amount of anionic functional groups such as sulfates and carboxylates. In this article, ultra-strong sacran hydrogels and their dried fibers were produced by cross-linking under injection flow with trivalent metal ions such as Al3+, Cr3+, Fe3+, In3+, and rare-earth metal ions such Er3+ and Sr3+. Crossed-polarizing microscopy and X-ray diffraction imaging revealed a uniaxial molecular orientation in the LC gel fiber, resulting in outstanding mechanical characteristics.
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Affiliation(s)
- Mohammad Asif Ali
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Ave, Wuxi 214122, China; (M.A.A.); (D.K.)
- Graduate School of Advanced Science and Technology, Japan Advanced Institute of Science and Technologies, 1-1 Asahidai, Nomi 923-1292, Ishikawa, Japan; (M.S.); (S.Z.)
| | - Maninder Singh
- Graduate School of Advanced Science and Technology, Japan Advanced Institute of Science and Technologies, 1-1 Asahidai, Nomi 923-1292, Ishikawa, Japan; (M.S.); (S.Z.)
| | - Shuo Zhang
- Graduate School of Advanced Science and Technology, Japan Advanced Institute of Science and Technologies, 1-1 Asahidai, Nomi 923-1292, Ishikawa, Japan; (M.S.); (S.Z.)
| | - Daisaku Kaneko
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Ave, Wuxi 214122, China; (M.A.A.); (D.K.)
- Graduate School of Advanced Science and Technology, Japan Advanced Institute of Science and Technologies, 1-1 Asahidai, Nomi 923-1292, Ishikawa, Japan; (M.S.); (S.Z.)
| | - Maiko Kaneko Okajima
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Ave, Wuxi 214122, China; (M.A.A.); (D.K.)
- Graduate School of Advanced Science and Technology, Japan Advanced Institute of Science and Technologies, 1-1 Asahidai, Nomi 923-1292, Ishikawa, Japan; (M.S.); (S.Z.)
| | - Tatsuo Kaneko
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Ave, Wuxi 214122, China; (M.A.A.); (D.K.)
- Graduate School of Advanced Science and Technology, Japan Advanced Institute of Science and Technologies, 1-1 Asahidai, Nomi 923-1292, Ishikawa, Japan; (M.S.); (S.Z.)
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Paper M, Jung P, Koch M, Lakatos M, Nilges T, Brück TB. Stripped: contribution of cyanobacterial extracellular polymeric substances to the adsorption of rare earth elements from aqueous solutions. Front Bioeng Biotechnol 2023; 11:1299349. [PMID: 38173874 PMCID: PMC10762542 DOI: 10.3389/fbioe.2023.1299349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Accepted: 12/01/2023] [Indexed: 01/05/2024] Open
Abstract
The transformation of modern industries towards enhanced sustainability is facilitated by green technologies that rely extensively on rare earth elements (REEs) such as cerium (Ce), neodymium (Nd), terbium (Tb), and lanthanum (La). The occurrence of productive mining sites, e.g., is limited, and production is often costly and environmentally harmful. As a consequence of increased utilization, REEs enter our ecosystem as industrial process water or wastewater and become highly diluted. Once diluted, they can hardly be recovered by conventional techniques, but using cyanobacterial biomass in a biosorption-based process is a promising eco-friendly approach. Cyanobacteria can produce extracellular polymeric substances (EPS) that show high affinity to metal cations. However, the adsorption of REEs by EPS has not been part of extensive research. Thus, we evaluated the role of EPS in the biosorption of Ce, Nd, Tb, and La for three terrestrial, heterocystous cyanobacterial strains. We cultivated them under N-limited and non-limited conditions and extracted their EPS for compositional analyses. Subsequently, we investigated the metal uptake of a) the extracted EPS, b) the biomass extracted from EPS, and c) the intact biomass with EPS by comparing the amount of sorbed REEs. Maximum adsorption capacities for the tested REEs of extracted EPS were 123.9-138.2 mg g-1 for Komarekiella sp. 89.12, 133.1-137.4 mg g-1 for Desmonostoc muscorum 90.03, and 103.5-129.3 mg g-1 for Nostoc sp. 20.02. A comparison of extracted biomass with intact biomass showed that 16% (Komarekiella sp. 89.12), 28% (Desmonostoc muscorum 90.03), and 41% (Nostoc sp. 20.02) of REE adsorption was due to the biosorption of the extracellular EPS. The glucose- rich EPS (15%-43% relative concentration) of all three strains grown under nitrogen-limited conditions showed significantly higher biosorption rates for all REEs. We also found a significantly higher maximum adsorption capacity of all REEs for the extracted EPS compared to cells without EPS and untreated biomass, highlighting the important role of the EPS as a binding site for REEs in the biosorption process. EPS from cyanobacteria could thus be used as efficient biosorbents in future applications for REE recycling, e.g., industrial process water and wastewater streams.
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Affiliation(s)
- Michael Paper
- Werner Siemens-Chair of Synthetic Biotechnology, Department of Chemistry, School of Natural Sciences, Technical University of Munich, Garching, Germany
| | - Patrick Jung
- Integrative Biotechnology, University of Applied Sciences Kaiserslautern, Pirmasens, Germany
| | - Max Koch
- Synthesis and Characterization of Innovative Materials, Department of Chemistry, School of Natural Sciences, Technical University of Munich, Garching, Germany
| | - Michael Lakatos
- Integrative Biotechnology, University of Applied Sciences Kaiserslautern, Pirmasens, Germany
| | - Tom Nilges
- Synthesis and Characterization of Innovative Materials, Department of Chemistry, School of Natural Sciences, Technical University of Munich, Garching, Germany
| | - Thomas B. Brück
- Werner Siemens-Chair of Synthetic Biotechnology, Department of Chemistry, School of Natural Sciences, Technical University of Munich, Garching, Germany
- Department of Aerospace and Geodesy, TUM AlgaeTec Center, Ludwig Bölkow Campus, Taufkirchen, Germany
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Budpud K, Okeyoshi K, Okajima MK, Kaneko T. Cyanobacterial supra‐polysaccharide: Self‐similar hierarchy, diverse morphology, and application prospects of sacran fibers. Biopolymers 2022; 113:e23522. [DOI: 10.1002/bip.23522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 07/01/2022] [Accepted: 07/05/2022] [Indexed: 11/09/2022]
Affiliation(s)
- Kulisara Budpud
- Graduate School of Advanced Science and Technology Japan Advanced Institute of Science and Technology Nomi Ishikawa Japan
| | - Kosuke Okeyoshi
- Graduate School of Advanced Science and Technology Japan Advanced Institute of Science and Technology Nomi Ishikawa Japan
| | - Maiko K. Okajima
- Graduate School of Advanced Science and Technology Japan Advanced Institute of Science and Technology Nomi Ishikawa Japan
| | - Tatsuo Kaneko
- Graduate School of Advanced Science and Technology Japan Advanced Institute of Science and Technology Nomi Ishikawa Japan
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Sum-Frequency Generation and Scanning Electron Microscope Studies on Second-Harmonic Generation Active Structures of Sacran Aggregates. E-JOURNAL OF SURFACE SCIENCE AND NANOTECHNOLOGY 2022. [DOI: 10.1380/ejssnt.2022-016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Takada K, Komuro A, Ali MA, Singh M, Okajima M, Matsumura K, Kaneko T. Cell-adhesive gels made of sacran/collagen complexes. Polym J 2022. [DOI: 10.1038/s41428-021-00593-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Yoshikawa S, Kanesaki Y, Uemura A, Yamada K, Okajima M, Kaneko T, Ohki K. Physiological and genomic analysis of newly-isolated polysaccharide synthesizing cyanobacterium Chroococcus sp. FPU101 and chemical analysis of the exopolysaccharide. J GEN APPL MICROBIOL 2021; 67:207-213. [PMID: 34248085 DOI: 10.2323/jgam.2021.02.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
A unicellular cyanobacterium that produces a large amount of exopolysaccharide (EPS) was isolated. The isolate, named Chroococcus sp. FPU101, grew between 20 and 30°C and at light intensities between 10 and 80 μmol m-2 s-1. Purified EPS from Chroococcus sp. FPU101 had a molecular size of 5.9 × 103 kDa and contained galactose, rhamnose, fucose, xylose, mannose, glucose, galacturonic acid, and glucuronic acid at a molar ratio of 17.2:15.9:14.1:11.0:9.6:9.5:13.0:9.7. The EPS content significantly increased when the NaCl concentration in the medium was increased from 1.7 to 100 mM. However, high NaCl concentrations did not significantly affect the molecular size or chemical composition of the EPS. The genes wza, wzb, wzc, wzx, wzy, and wzz that are involved in EPS synthesis were conserved in the genome of Chroococcus sp. FPU101, which was sequenced in this study. These results suggest that the Wzy-dependent pathway is potentially involved in EPS production in this organism.
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Affiliation(s)
| | - Yu Kanesaki
- Research Institute of Green Science and Technology, Shizuoka University
| | - Akira Uemura
- Department of Marine Bioscience, Fukui Prefectural University
| | - Kazumasa Yamada
- Department of Marine Bioscience, Fukui Prefectural University
| | - Maiko Okajima
- School of Materials Science, Japan Advanced Institute of Science and Technology
| | - Tatsuo Kaneko
- School of Materials Science, Japan Advanced Institute of Science and Technology
| | - Kaori Ohki
- Department of Marine Bioscience, Fukui Prefectural University.,Green Science Material Inc. Kumamoto
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Puluhulawa LE, Joni IM, Mohammed AFA, Arima H, Wathoni N. The Use of Megamolecular Polysaccharide Sacran in Food and Biomedical Applications. Molecules 2021; 26:molecules26113362. [PMID: 34199586 PMCID: PMC8199723 DOI: 10.3390/molecules26113362] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Revised: 05/28/2021] [Accepted: 05/31/2021] [Indexed: 11/16/2022] Open
Abstract
Natural polymer is a frequently used polymer in various food applications and pharmaceutical formulations due to its benefits and its biocompatibility compared to synthetic polymers. One of the natural polymer groups (i.e., polysaccharide) does not only function as an additive in pharmaceutical preparations, but also as an active ingredient with pharmacological effects. In addition, several natural polymers offer potential distinct applications in gene delivery and genetic engineering. However, some of these polymers have drawbacks, such as their lack of water retention and elasticity. Sacran, one of the high-molecular-weight natural polysaccharides (megamolecular polysaccharides) derived from Aphanothece sacrum (A. sacrum), has good water retention and elasticity. Historically, sacran has been used as a dietary food. Moreover, sacran can be applied in biomedical fields as an active material, excipient, and genetic engineering material. This article discusses the characteristics, extraction, isolation procedures, and the use of sacran in food and biomedical applications.
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Affiliation(s)
- Lisa Efriani Puluhulawa
- Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmacy, Universitas Padjajaran, Sumedang 45363, Indonesia;
| | - I Made Joni
- Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Padjajaran, Sumedang 45363, Indonesia;
- Functional Nano Powder University Center of Excellence (FiNder U CoE) Padjadajaran Universitas Padjajaran, Sumedang 45363, Indonesia
| | | | | | - Nasrul Wathoni
- Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmacy, Universitas Padjajaran, Sumedang 45363, Indonesia;
- Correspondence: ; Tel.: +62-22-842-888888
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Hydrogel composite of lanthanum and Halorubrum ejinoor sp. cell lysate as an adsorbing material. Biotechnol Lett 2021; 43:1443-1453. [PMID: 33877517 DOI: 10.1007/s10529-021-03132-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Accepted: 04/09/2021] [Indexed: 12/17/2022]
Abstract
OBJECTIVES Although halophilic archaea are rich in natural environments, their biotechnological applications are not as prevalent as those of other extremophiles, such as thermophiles and alkaliphiles. This study presents an simple method to prepare a hydrogel composite using crude cell lysate of a halophilic archaea, Halorubrum ejinoor sp. (H.e.) which was isolated from a saline lake in Inner Mongolia, China. Furthermore, formation mechanism and potential applications of the hydrogel as an adsorbing material are discussed. RESULTS Halorubrum ejinoor sp. (H.e.) cell lysate was firstly prepared by adding pure water onto the H.e. cell pellet, followed by a short incubation at 60 °C. The cell lysate was injected into different metal ion (or H+) solutions to obtain the hydrogel composite. It was observed that H+, Fe3+, La3+, Cu2+, and Ca2+ induced gelation of the cell lysate, while Fe2+, Co2+, Ni2+, Mg2+, Na+, and K+ did not. DNA and extracellular polysaccharides (EPS) in the H.e. cell lysate were found to be responsible for the gelation reaction. These results suggest that DNA and EPS should be crosslinked by metal ions (or H+) and form a networked structure in which the metal ion (or H+) serves as an anchor point. Potential application of the hydrogel as an adsorbing material was explored using La3+-induced H.e. hydrogel composite. The hydrogel composite can adsorb the fluoride, phosphate and DNA-binding carcinogenic agents, such as acridine orange. CONCLUSIONS The simplicity and cost effectiveness of the preparation method might make H.e. hydrogel a promising adsorbing material. This work is expected to expand the technical applications of haloarchaea.
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Li L, Takada A, Ma W, Fujikawa S, Ariyoshi M, Igata K, Okajima M, Kaneko T, Takahara A. Structure and Properties of Hybrid Film Fabricated by Spin-Assisted Layer-by-Layer Assembly of Sacran and Imogolite Nanotubes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:1718-1726. [PMID: 32040331 DOI: 10.1021/acs.langmuir.9b03626] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
A free-standing (biomacomolecule/synthetic inorganic nanotubes) hybrid film was fabricated through an alternative layer-by-layer (LBL) assembly of sacran and imogolite nanotubes. Sacran is a natural polysaccharide extracted from the cyanobacterium Aphanothece sacrum, while imogolite is a natural tubular aluminosilicate clay found in volcano ash. The hybrid film thickness increased linearly with the number of the bilayers, because of the interaction between the negatively charged surface of sacran and the positively charged surface of imogolite. UV-vis spectroscopy indicated that the LBL film exhibited good transparency. The surface morphology of the LBL film was smooth in the micrometer scale; many imogolite nanotubes were adsorbed onto the sacran layer, while no imogolite clusters were observed. Furthermore, the structure, stability, gas permeability, and mechanical properties of the LBL films were investigated.
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Affiliation(s)
- Linlin Li
- Graduate School of Engineering , Kyushu University , 744 Motooka, Nishi-ku , Fukuoka 819-0395 , Japan
| | - Akihiko Takada
- Institute for Materials Chemistry and Engineering , Kyushu University , 744 Motooka, Nishi-ku , Fukuoka 819-0395 , Japan
| | - Wei Ma
- International Institute for Carbon-Neutral Energy Research (WPI-I2CNER) , Kyushu University , 744 Motooka, Nishi-ku , Fukuoka 819-0395 , Japan
| | - Shigenori Fujikawa
- Graduate School of Engineering , Kyushu University , 744 Motooka, Nishi-ku , Fukuoka 819-0395 , Japan
- International Institute for Carbon-Neutral Energy Research (WPI-I2CNER) , Kyushu University , 744 Motooka, Nishi-ku , Fukuoka 819-0395 , Japan
| | - Miho Ariyoshi
- International Institute for Carbon-Neutral Energy Research (WPI-I2CNER) , Kyushu University , 744 Motooka, Nishi-ku , Fukuoka 819-0395 , Japan
| | - Kosuke Igata
- Graduate School of Engineering , Kyushu University , 744 Motooka, Nishi-ku , Fukuoka 819-0395 , Japan
| | - Maiko Okajima
- School of Materials Science , Japan Advanced Institute of Science and Technology (JAIST), 1-1 Asahidai , Nomi , Ishikawa 923-1292 , Japan
| | - Tatsuo Kaneko
- School of Materials Science , Japan Advanced Institute of Science and Technology (JAIST), 1-1 Asahidai , Nomi , Ishikawa 923-1292 , Japan
| | - Atsushi Takahara
- Graduate School of Engineering , Kyushu University , 744 Motooka, Nishi-ku , Fukuoka 819-0395 , Japan
- Institute for Materials Chemistry and Engineering , Kyushu University , 744 Motooka, Nishi-ku , Fukuoka 819-0395 , Japan
- International Institute for Carbon-Neutral Energy Research (WPI-I2CNER) , Kyushu University , 744 Motooka, Nishi-ku , Fukuoka 819-0395 , Japan
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Rheopectic Behavior for Aqueous Solutions of Megamolecular Polysaccharide Sacran. Biomolecules 2020; 10:biom10010155. [PMID: 31963576 PMCID: PMC7023324 DOI: 10.3390/biom10010155] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Revised: 01/15/2020] [Accepted: 01/15/2020] [Indexed: 01/10/2023] Open
Abstract
The rheopectic behavior of sacran aqueous solutions, a natural giant molecular polysaccharide with a molecular weight of 1.6 × 107 g/mol, was investigated. When a low shear was applied to 1.0 wt.% sacran solution, the shear viscosity increased from 7.2 to 34 Pa·s. The increment in the viscosity was enhanced as the shear rate decreased. The shear viscosity was independent of the time at a shear rate of 0.8 s−1; simultaneously, thixotropic behavior was observed at shear rates higher than 1.0 s−1. A crossover was observed at 0.15 wt.% for the concentration dependence of both the viscosity increase and zeta potential, which was the vicinity of the helix transition concentration or gelation concentration. It was clear that the molecular mechanism for the rheopexy was different at lower and higher regions of the crossover concentration.
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Kurayama F, Mohammed Bahadur N, Furusawa T, Sato M, Suzuki N. Facile preparation of aminosilane-alginate hybrid beads for enzyme immobilization: Kinetics and equilibrium studies. Int J Biol Macromol 2019; 150:1203-1212. [PMID: 31751729 DOI: 10.1016/j.ijbiomac.2019.10.130] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Revised: 10/10/2019] [Accepted: 10/14/2019] [Indexed: 10/25/2022]
Abstract
A simple, facile and potential platform for enzyme immobilization using alginate-based beads has been demonstrated by simultaneous gelation and modification of alginate using calcium chloride (CaCl2) and 3-aminopropyltriethoxysilane (APTES). In this method, sodium alginate solution containing enzyme was simply dripped into a crosslinker solution containing CaCl2 and APTES, leading to the formation of APTES-alginate hybrid beads (AP-beads). The optical observation, FT-IR analysis and amino group measurements provided evidence that APTES was successfully adsorbed to the alginate chain via electrostatic interaction. On the assumption that the binding of Ca2+ ion to polymannuronate residues of alginate via bidentate bridging coordination is competitive with APTES, the equilibrium isotherm and kinetics for the adsorption of APTES to AP-beads was found to follow extended Langmuir isotherm in binary system. Formate dehydrogenase (FDH) as a model enzyme was successfully immobilized in AP-beads and the immobilization yield of ca. 100% could be achieved under optimal conditions of CaCl2 and APTES concentrations in crosslinker solution. Furthermore, the AP-beads were reused efficiently for 9 cycles without loss of FDH activity. The above results demonstrated that AP-beads were effective support for enzyme immobilization.
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Affiliation(s)
- Fumio Kurayama
- Department of Computer Science, School of Computing, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan.
| | - Newaz Mohammed Bahadur
- Department of Applied Chemistry and Chemical Engineering, Noakhali Science and Technology University, Noakhali 3814, Bangladesh
| | - Takeshi Furusawa
- Department of Material and Environmental Chemistry, Utsunomiya University, 7-1-2 Yoto, Utsunomiya, Tochigi 321-8585, Japan
| | - Masahide Sato
- Department of Material and Environmental Chemistry, Utsunomiya University, 7-1-2 Yoto, Utsunomiya, Tochigi 321-8585, Japan
| | - Noboru Suzuki
- Department of Material and Environmental Chemistry, Utsunomiya University, 7-1-2 Yoto, Utsunomiya, Tochigi 321-8585, Japan
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Arima H, Motoyama K, Higashi T. [Potential Use of Sacran for Dermal and Oral Preparations]. YAKUGAKU ZASSHI 2019; 139:385-391. [PMID: 30828015 DOI: 10.1248/yakushi.18-00177-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Sacran, a new polysaccharide isolated from cyanobacterium Aphanothece sacrum (Sur.) Okada, is known to have potential as an active pharmaceutical ingredient (API) for the treatment of atopic dermatitis, various types of dermatitis, skin wound, hemorrhoids and corneal epithelium disorder. In the present studies, the effects of sacran on skin injury and skin pain induced by stratum corneum tape-stripping and gastric ulcer induced by indomethacin, a non-steroidal anti-inflammatory drug (NSAID), and hydrochloride/ethanol (HCl/EtOH) in mice were investigated. Sacran solution 0.05% (w/v) showed greater reduction of skin injury and skin pain induced by stratum corneum tape-stripping, compared to that of 0.01% (w/v) and 0.1% (w/v) sacran solutions. In addition, the inhibitory effects of 0.05% (w/v) sacran on skin injury and skin pain induced by tape-stripping were significantly superior to 0.05% (w/v) hyaluronic acid solution. On the other hand, 1.0% (w/v) sacran solution significantly inhibited gastric ulcer formation induced by indomethacin, compared with 1% (w/v) dextran solution and the inhibitory effect of sacran was comparable to that of the positive control omeprazole. In addition, 1% (w/v) and 2% (w/v) sacran solution reduced HCl/EtOH-induced gastric ulcer in mice, with the alleviative effect of sacran was comparable to or greater than that of the positive control sodium alginate. These results suggest that sacran has potential as API to treat skin injury and pain induced by tape-stripping and gastric ulcer induced by NSAIDs and EtOH.
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Affiliation(s)
- Hidetoshi Arima
- Department of Physical Pharmaceutics, Graduate School of Pharmaceutical Sciences, Kumamoto University
| | - Keiichi Motoyama
- Department of Physical Pharmaceutics, Graduate School of Pharmaceutical Sciences, Kumamoto University
| | - Taishi Higashi
- Department of Physical Pharmaceutics, Graduate School of Pharmaceutical Sciences, Kumamoto University
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Mizutani G, Zhao Y, Khuat HTT, Okajima M, Kaneko T. Optical Second-harmonic Observation of Stimulated Sacran Aggregates. YAKUGAKU ZASSHI 2019; 139:351-362. [DOI: 10.1248/yakushi.18-00177-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Goro Mizutani
- School of Materials Science, Japan Advanced Institute of Science and Technology
| | - Yue Zhao
- School of Materials Science, Japan Advanced Institute of Science and Technology
| | - Hien Thi Thu Khuat
- School of Materials Science, Japan Advanced Institute of Science and Technology
| | - Maiko Okajima
- School of Materials Science, Japan Advanced Institute of Science and Technology
| | - Tatsuo Kaneko
- School of Materials Science, Japan Advanced Institute of Science and Technology
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Liu Z, Liu Y, Gong A. Preparation of Diglycolamide Based Hydrogel and Its Application as Adsorbent for Rare Earth Ions. CHEM LETT 2018. [DOI: 10.1246/cl.180607] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Zhe Liu
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, P. R. China
- Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials, University of Science and Technology Beijing, Beijing 100083, P. R. China
| | - Yu Liu
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, P. R. China
- Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials, University of Science and Technology Beijing, Beijing 100083, P. R. China
- Institute of Biotechnology, Daqing Branch of Heilongjiang Academy of Science, Daqing 163319, P. R. China
| | - Aijun Gong
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, P. R. China
- Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials, University of Science and Technology Beijing, Beijing 100083, P. R. China
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Ohki K, Kanesaki Y, Suzuki N, Okajima M, Kaneko T, Yoshikawa S. Physiological properties and genetic analysis related to exopolysaccharide (EPS) production in the fresh-water unicellular cyanobacterium Aphanothece sacrum (Suizenji Nori). J GEN APPL MICROBIOL 2018; 65:39-46. [PMID: 29998926 DOI: 10.2323/jgam.2018.04.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The clonal strains, phycoerythrin(PE)-rich- and PE-poor strains, of the unicellular, fresh water cyanobacterium Aphanothece sacrum (Suringar) Okada (Suizenji Nori, in Japanese) were isolated from traditional open-air aquafarms in Japan. A. sacrum appeared to be oligotrophic on the basis of its growth characteristics. The optimum temperature for growth was around 20°C. Maximum growth and biomass increase at 20°C was obtained under light intensities between 40 to 80 μmol m-2 s-1 (fluorescent lamps, 12 h light/12 h dark cycles) and between 40 to 120 μmol m-2 s-1 for PE-rich and PE-poor strains, respectively, of A. sacrum . Purified exopolysaccharide (EPS) of A. sacrum has a molecular weight of ca. 104 kDa with five major monosaccharides (glucose, xylose, rhamnose, galactose and mannose; ≥85 mol%). We also deciphered the whole genome sequence of the two strains of A. sacrum. The putative genes involved in the polymerization, chain length control, and export of EPS would contribute to understand the biosynthetic process of their extremely high molecular weight EPS. The putative genes encoding Wzx-Wzy-Wzz- and Wza-Wzb-Wzc were conserved in the A. sacrum strains FPU1 and FPU3. This result suggests that the Wzy-dependent pathway participates in the EPS production of A. sacrum.
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Affiliation(s)
- Kaori Ohki
- Department of Marine Bioscience, Fukui Prefectural University
| | - Yu Kanesaki
- NODAI Genom Research Center, Tokyo University of Agriculture
| | - Noriyuki Suzuki
- Department of Marine Bioscience, Fukui Prefectural University
| | - Maiko Okajima
- School of Materials Science, Japan Advanced Institute of Science and Technology
| | - Tatsuo Kaneko
- School of Materials Science, Japan Advanced Institute of Science and Technology
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Ali A, Ahmed S. Recent Advances in Edible Polymer Based Hydrogels as a Sustainable Alternative to Conventional Polymers. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:6940-6967. [PMID: 29878765 DOI: 10.1021/acs.jafc.8b01052] [Citation(s) in RCA: 121] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The over increasing demand of eco-friendly materials to counter various problems, such as environmental issues, economics, sustainability, biodegradability, and biocompatibility, open up new fields of research highly focusing on nature-based products. Edible polymer based materials mainly consisting of polysaccharides, proteins, and lipids could be a prospective contender to handle such problems. Hydrogels based on edible polymer offer many valuable properties compared to their synthetic counterparts. Edible polymers can contribute to the reduction of environmental contamination, advance recyclability, provide sustainability, and thereby increase its applicability along with providing environmentally benign products. This review is highly emphasizing on toward the development of hydrogels from edible polymer, their classification, properties, chemical modification, and their potential applications. The application of edible polymer hydrogels covers many areas including the food industry, agricultural applications, drug delivery to tissue engineering in the biomedical field and provide more safe and attractive products in the pharmaceutical, agricultural, and environmental fields, etc.
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Affiliation(s)
- Akbar Ali
- Department of Chemistry , Jamia Millia Islamia , New Delhi , 110025 , India
| | - Shakeel Ahmed
- Department of Chemistry , Government Degree College Mendhar , Jammu , Jammu and Kashmir , 185211 , India
- Higher Education Department , Government of Jammu and Kashmir , Jammu , 180001 , India
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Kaneko T, Okajima MK. [Super Liquid Crystalline Polysaccharides Produced by Ultimately-ecological Microreactors]. YAKUGAKU ZASSHI 2018; 138:489-496. [PMID: 29607994 DOI: 10.1248/yakushi.17-00201-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Cyanobacteria fix carbon dioxide and nitrogen from the atmosphere using solar energy to produce various biomolecules, and thus are regarded as ultimately ecological microreactors. Sacran is a cyanobacterial polysaccharide with a very high molecular weight of 29 Mg/mol, which is extracted from Aphanothece sacrum cyanobacterium mass-cultivated in freshwater environments such as river or spring. Sacran is a water-soluble heteropolysaccharide comprising more than 6 kinds of sugar residues and contains 12% sulfate anionic groups and 27% carboxyls. Sacran has a super-absorbent function of water, which can retain 6000 mL for 1 g specimen, due to very long hydrating chains. The value is much higher than hyaluronic acid or conventional super-absorbent polymers. Sacran exhibits self-orienting behavior in dilute solution at a concentration range over 0.25 wt%, which is quite low when compared with conventional liquid crystalline polysaccharides. Mesogenic helical chains of sacrans have extremely high aspect ratios of 1600 for highly persistent lengths of 32 micrometer. Through the liquid crystallinity, sacran solution shows a shear-thinning behavior and the solution spread over a substrate such as biological skin very efficiently to create a thin layer. Applied on atopic dermatitis skin sacran solution exerts excellent moisturizing effect and anti-itching action.
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Affiliation(s)
- Tatsuo Kaneko
- Energy and Environmental Area, Graduate School of Advanced Science and Technology, Japan Advanced Institute of Science and Technology
| | - Maiko K Okajima
- Energy and Environmental Area, Graduate School of Advanced Science and Technology, Japan Advanced Institute of Science and Technology
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Abstract
We investigated the electric and viscoelastic properties for the aqueous solution of cyanobacterial megamolecules, named sacran. Sacran is an anionic polyelectrolyte that has carboxylate and sulfate groups on the saccharide chain. The electric conductivity and shear viscosity demonstrated three crossover concentrations; overlap concentration at 0.004 wt%, entanglement concentration at 0.02 wt%, and gelation concentration at 0.1 wt%. The decrease in the charge density of the sacran chains reduces the repulsive force between the chains and this would cause transformation from the dilute to condensed states. At extremely low flow rates, sacran demonstrated a behavior called negative thixotropy in which the shear viscosity increased over time. In this review, the conformation of sacran chain in pure water is discussed and its negative thixotropy is briefly described.
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Affiliation(s)
- Tetsu Mitsumata
- Graduate School of Science and Technology, Niigata University
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19
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Hayashi Y, Higashi T, Motoyama K, Jono H, Ando Y, Arima H. In vitro and in vivo siRNA delivery to hepatocyte utilizing ternary complexation of lactosylated dendrimer/cyclodextrin conjugates, siRNA and low-molecular-weight sacran. Int J Biol Macromol 2017; 107:1113-1121. [PMID: 28964842 DOI: 10.1016/j.ijbiomac.2017.09.085] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Revised: 09/18/2017] [Accepted: 09/21/2017] [Indexed: 10/18/2022]
Abstract
In this study, we newly developed the ternary complexes consisting of lactosylated dendrimer (generation 3)/α-cyclodextrin conjugate (Lac-α-CDE), siRNA and the anionic polysaccharide sacrans, and evaluated their utility as siRNA transfer carriers. Three kinds of the low-molecular-weight sacrans, i.e. sacran (100) (Mw 44,889Da), sacran (1000) (Mw 943,692Da) and sacran (10,000) (Mw 1,488,281Da) were used. Lac-α-CDE/siRNA/sacran ternary complexes were prepared by adding the low-molecular-weight sacrans to the Lac-α-CDE/siRNA binary complex solution. Cellular uptake of the ternary complex with sacran (100) was higher than that of the binary complex or the other ternary complexes with sacran (1000) and sacran (10,000) in HepG2 cells. Additionally, the ternary complex possessed high serum resistance and endosomal escaping ability in HepG2 cells. High liver levels of siRNA and Lac-α-CDE were observed after the intravenous administration of the ternary complex rather than that of the binary complex. Moreover, intravenous administration of the ternary complex (siRNA 5mg/kg) induced the significant RNAi effect in the liver of mice with negligible change of blood chemistry values. Therefore, a ternary complexation of the Lac-α-CDE/siRNA binary complex with sacran is useful as a hepatocyte-specific siRNA delivery system.
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Affiliation(s)
- Yuya Hayashi
- Department of Physical Pharmaceutics, Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-Honmachi, Chuo-ku, Kumamoto 862-0973, Japan; Research Fellow of Japan Society for the Promotion of Science, Japan
| | - Taishi Higashi
- Department of Physical Pharmaceutics, Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-Honmachi, Chuo-ku, Kumamoto 862-0973, Japan
| | - Keiichi Motoyama
- Department of Physical Pharmaceutics, Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-Honmachi, Chuo-ku, Kumamoto 862-0973, Japan
| | - Hirofumi Jono
- Department of Pharmacy, Kumamoto University Hospital, 1-1-1 Honjo, Chuo-ku, Kumamoto 860-8556, Japan; Department of Clinical Pharmaceutical Sciences, Graduate School of Pharmaceutical Sciences, Kumamoto University, 1-1-1 Honjo, Chuo-ku, Kumamoto 860-8556, Japan
| | - Yukio Ando
- Department of Neurology, Graduate School of Medical Sciences, Kumamoto University, 1-1-1 Honjo, Chuo-ku, Kumamoto 860-8556, Japan
| | - Hidetoshi Arima
- Department of Physical Pharmaceutics, Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-Honmachi, Chuo-ku, Kumamoto 862-0973, Japan; Program for Leading Graduate Schools 'Health life science: Interdisciplinary and Glocal Oriented (HIGO) Program', Kumamoto University, Japan.
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20
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Ohyama A, Higashi T, Motoyama K, Arima H. Ternary complexes of folate-PEG-appended dendrimer (G4)/α-cyclodextrin conjugate, siRNA and low-molecular-weight polysaccharide sacran as a novel tumor-selective siRNA delivery system. Int J Biol Macromol 2017; 99:21-28. [PMID: 28223132 DOI: 10.1016/j.ijbiomac.2017.02.045] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Revised: 01/25/2017] [Accepted: 02/09/2017] [Indexed: 12/23/2022]
Abstract
We previously developed a tumor-selective siRNA carrier by preparing polyamidoamine dendrimer (generation 4, G4) conjugates with α-cyclodextrin and folate-polyethylene glycol (Fol-PαC (G4)). In the present study, we developed ternary complexes of Fol-PαC (G4)/siRNA with low-molecular-weight-sacrans to achieve more effective siRNA transfer activity. Among the different molecular-weight sacrans, i.e. sacran 100, 1000 and 10,000 (MW 44,889Da, 943,692Da and 1,488,281Da, respectively), sacran 100 significantly increased the cellular uptake and the RNAi effects of Fol-PαC (G4)/siRNA binary complex with negligible cytotoxicity in KB cells (folate receptor-α positive cells). In addition, the ζ-potential and particle size of Fol-PαC (G4)/siRNA complex were decreased by the ternary complexation with sacran 100. Importantly, the in vivo RNAi effect of the ternary complex after the intravenous administration to tumor-bearing BALB/c mice was significantly higher than that of the binary complex. In conclusion, Fol-PαC (G4)/siRNA/sacran 100 ternary complex has a potential as a novel tumor-selective siRNA delivery system.
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Affiliation(s)
- Ayumu Ohyama
- Department of Physical Pharmaceutics, Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto 862-0973, Japan; Program for Leading Graduate Schools 'Health Life Science: Interdisciplinary and Glocal Oriented (HIGO) Program', Kumamoto University, Japan
| | - Taishi Higashi
- Department of Physical Pharmaceutics, Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto 862-0973, Japan
| | - Keiichi Motoyama
- Department of Physical Pharmaceutics, Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto 862-0973, Japan
| | - Hidetoshi Arima
- Department of Physical Pharmaceutics, Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto 862-0973, Japan; Program for Leading Graduate Schools 'Health Life Science: Interdisciplinary and Glocal Oriented (HIGO) Program', Kumamoto University, Japan.
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21
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Zhao Y, Thu Hien KT, Mizutani G, Rutt HN, Amornwachirabodee K, Okajima M, Kaneko T. Optical second-harmonic images of sacran megamolecule aggregates. JOURNAL OF THE OPTICAL SOCIETY OF AMERICA. A, OPTICS, IMAGE SCIENCE, AND VISION 2017; 34:146-152. [PMID: 28157840 DOI: 10.1364/josaa.34.000146] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We have detected a second-order nonlinear optical response from aggregates of the ampholytic megamolecular polysaccharide sacran extracted from cyanobacterial biomaterials by using optical second-harmonic-generation (SHG) microscopy. The SHG images of sacran cotton-like lump, fibers, and cast films showed SHG intensity microspots of several tens of micrometers in size. The dependence of the SHG spot intensity on an excitation light polarization angle was observed to illustrate sacran molecular orientation in these microdomains. We also observed SHG signals around a special region of the cast film edges of sacran. These results show that sacran megamolecules aggregate in several different ways.
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Wang M, Li X, Hua W, Shen L, Yu X, Wang X. Electrospun Poly(acrylic acid)/Silica Hydrogel Nanofibers Scaffold for Highly Efficient Adsorption of Lanthanide Ions and Its Photoluminescence Performance. ACS APPLIED MATERIALS & INTERFACES 2016; 8:23995-24007. [PMID: 27537710 DOI: 10.1021/acsami.6b08294] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Combined with the features of electrospun nanofibers and the nature of hydrogel, a novel choreographed poly(acrylic acid)-silica hydrogel nanofibers (PAA-S HNFs) scaffold with excellent rare earth elements (REEs) recovery performance was fabricated by a facile route consisting of colloid-electrospinning of PAA/SiO2 precursor solution, moderate thermal cross-linking of PAA-S nanofiber matrix, and full swelling in water. The resultant PAA-S HNFs with a loose and spongy porous network structure exhibited a remarkable adsorption capacity of lanthanide ions (Ln(3+)) triggered by the penetration of Ln(3+) from the nanofiber surface to interior through the abundant water channels, which took full advantage of the internal adsorption sites of nanofibers. The effects of initial solution pH, concentration, and contact time on adsorption of Ln(3+) have been investigated comprehensively. The maximum equilibrium adsorption capacities for La(3+), Eu(3+), and Tb(3+) were 232.6, 268.8, and 250.0 mg/g, respectively, at pH 6, and the adsorption data were well-fitted to the Langmuir isotherm and pseudo-second-order models. The resultant PAA-S HNFs scaffolds could be regenerated successfully. Furthermore, the proposed adsorption mechanism of Ln(3+) on PAA-S HNFs scaffolds was the formation of bidentate carboxylates between carboxyl groups and Ln(3+) confirmed by FT-IR and XPS analysis. The well-designed PAA-S HNFs scaffold can be used as a promising alternative for effective REEs recovery. Moreover, benefiting from the unique features of Ln(3+), the Ln-PAA-S HNFs simultaneously exhibited versatile advantages including good photoluminescent performance, tunable emission color, and excellent flexibility and processability, which also hold great potential for applications in luminescent patterning, underwater fluorescent devices, sensors, and biomaterials, among others.
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Affiliation(s)
- Min Wang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University , Shanghai 201620, PR China
| | - Xiong Li
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University , Shanghai 201620, PR China
| | - Weikang Hua
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University , Shanghai 201620, PR China
| | - Lingdi Shen
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University , Shanghai 201620, PR China
| | - Xufeng Yu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University , Shanghai 201620, PR China
| | - Xuefen Wang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University , Shanghai 201620, PR China
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23
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Shikinaka K, Okeyoshi K, Masunaga H, Okajima MK, Kaneko T. Solution structure of cyanobacterial polysaccharide, sacran. POLYMER 2016. [DOI: 10.1016/j.polymer.2016.08.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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24
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Motoyama K, Tanida Y, Hata K, Hayashi T, Hashim IIA, Higashi T, Ishitsuka Y, Kondo Y, Irie T, Kaneko S, Arima H. Anti-inflammatory Effects of Novel Polysaccharide Sacran Extracted from Cyanobacterium Aphanothece sacrum in Various Inflammatory Animal Models. Biol Pharm Bull 2016; 39:1172-8. [PMID: 27170516 DOI: 10.1248/bpb.b16-00208] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The goal of this study was to investigate the topical anti-inflammatory effects of the megamolecular polysaccharide sacran extracted from cyanobacterium Aphanothece sacrum using various inflammatory animal models. Sacran showed potent anti-inflammatory effects with optimum effective concentrations at 0.01 and 0.05% (w/v). Sacran markedly inhibited paw swelling and neutrophil infiltration in carrageenan-induced rat paw edema. Additionally, 6,7-dimethoxy-1-methyl-2(1H)-quinoxalinone-3-propionyl-carboxylic acid (DMEQ)-labeled sacran had the ability to penetrate carrageenan-induced rat paw skin rather than normal skin. Also, sacran significantly suppressed kaolin-induced and dextran-induced rat paw edema throughout the duration of the study. Furthermore, sacran significantly suppressed 12-O-tetradecanoylphorbol-13-acetate (TPA)-induced mouse ear edema and mRNA expression levels of cyclooxygenase (COX)-2 as well as pro-inflammatory cytokines such as tumor necrosis factor (TNF)-α, interleukin (IL)-1β, and IL-6. Safety of sacran solution was verified by negligible cytotoxicity in HaCaT cells. These results suggest that sacran may be useful as a therapeutic agent against inflammatory skin diseases with no life-threatening adverse effects.
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25
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Okajima MK, Kumar A, Fujiwara A, Mitsumata T, Kaneko D, Ogawa T, Kurata H, Isoda S, Kaneko T. Anionic complexes of MWCNT with supergiant cyanobacterial polyanions. Biopolymers 2016; 99:1-9. [PMID: 23097225 DOI: 10.1002/bip.22129] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Multi-walled carbon nanotubes (MWCNTs) were well dispersed in an aqueous solution of the cyanobacterial polysaccharide, sacran, with an ultra-high molecular weight >10 million g/mol. MWCNTs powder was put into aqueous solutions of various polysaccharides including sacran and was dispersed under sonication. As a result of the turbidity measurement of the supernatant, it was found that sacran showed the highest MWCNT-dispersion efficiency of all the polysaccharides used here. Cryogenic transmission electron microscopic (Cryo-TEM) studies directly demonstrated the existence of MWCNTs in the supernatant, and high-resolution TEM observation revealed that MWCNTs covered by sacran chains made their efficient dispersion in water. Raman spectroscopy demonstrated the existence of MWCNT in dried sample from supernatant and the interaction between MWCNT and sacran. The ζ-potential measurement of the dispersion indicated the negative surface charges of the sacran/MWCNT complexes. Then the MWCNT complexes were able to fabricate by ionic interaction; electrophoresis of the anionic complex formed the sacran/MWCNT gels on the anode while the droplet of sacran/MWCNT dispersion formed gel beads in the presence of the lanthanoid cations.
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Affiliation(s)
- Maiko K Okajima
- School of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan
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26
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Ito W, Yamaki M, Kawai M, Mitsumata T, Okajima MK, Kaneko T. Extraordinary Swelling of Hydrogels Physically Crosslinked by Megamolecular Chain Sacran. CHEM LETT 2016. [DOI: 10.1246/cl.151125] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Wataru Ito
- Department of Polymer Science and Engineering, Graduate School of Engineering and Science, Yamagata University
| | - Miho Yamaki
- Department of Materials Science and Engineering, Faculty of Engineering, Niigata University
| | - Mika Kawai
- Department of Materials Science and Engineering, Faculty of Engineering, Niigata University
| | - Tetsu Mitsumata
- Department of Materials Science and Engineering, Faculty of Engineering, Niigata University
| | - Maiko K. Okajima
- School of Materials Science, Japan Advanced Institute of Science and Technology
| | - Tatsuo Kaneko
- School of Materials Science, Japan Advanced Institute of Science and Technology
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27
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Fukushima S, Motoyama K, Tanida Y, Higashi T, Ishitsuka Y, Kondo Y, Irie T, Tanaka T, Ihn H, Arima H. Clinical Evaluation of Novel Natural Polysaccharides Sacran as a Skincare Material for Atopic Dermatitis Patients. ACTA ACUST UNITED AC 2016. [DOI: 10.4236/jcdsa.2016.61002] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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28
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Amornwachirabodee K, Okajima MK, Kaneko T. Uniaxial Swelling in LC Hydrogels Formed by Two-Step Cross-Linking. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b02170] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kittima Amornwachirabodee
- School of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan
- Department of Chemistry,
Faculty of Science, Chulalongkorn University, 254 Phayathai Road, Pathumwan, Bangkok 10330, Thailand
| | - Maiko K. Okajima
- School of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan
| | - Tatsuo Kaneko
- School of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan
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Okajima MK, Mishima R, Amornwachirabodee K, Mitsumata T, Okeyoshi K, Kaneko T. Anisotropic swelling in hydrogels formed by cooperatively aligned megamolecules. RSC Adv 2015. [DOI: 10.1039/c5ra18585h] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A cyanobacterial polysaccharide, sacran, which has a high molecular length over 30 μm, forms in-plane oriented film by casting. The film creates uniaxially-swelling hydrogels with a micrometer thickness.
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Affiliation(s)
- M. K. Okajima
- School of Materials Science
- Japan Advanced Institute of Science and Technology (JAIST)
- Nomi
- Japan
| | - R. Mishima
- School of Materials Science
- Japan Advanced Institute of Science and Technology (JAIST)
- Nomi
- Japan
| | - K. Amornwachirabodee
- School of Materials Science
- Japan Advanced Institute of Science and Technology (JAIST)
- Nomi
- Japan
- Program of Petrochemistry
| | - T. Mitsumata
- Graduate School of Science and Technology
- Niigata University
- Nishi-ku
- Japan
| | - K. Okeyoshi
- School of Materials Science
- Japan Advanced Institute of Science and Technology (JAIST)
- Nomi
- Japan
| | - T. Kaneko
- School of Materials Science
- Japan Advanced Institute of Science and Technology (JAIST)
- Nomi
- Japan
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30
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Motoyama K, Tanida Y, Hata K, Hayashi T, Higashi T, Ishitsuka Y, Kondo Y, Irie T, Kaneko S, Arima H. Potential use of a megamolecular polysaccharide sacran as a hydrogel-based sustained release system. Chem Pharm Bull (Tokyo) 2014; 62:636-41. [PMID: 24739952 DOI: 10.1248/cpb.c14-00053] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A megamolecular polysaccharide sacran was newly extracted from cyanobacterium Aphanothece sacrum. Sacran has many preferable properties for transdermal application, e.g. a safe biomaterial, a high moisturizing effect, a formation of film and hydrogel. Additionally, it was recently discovered that sacran has an anti-inflammatory effect for atopic dermatitis model mice. In this study, in order to evaluate the feasibility of sacran-hydrogel as a novel sustained release system, we prepared a sacran-hydrogel containing 4-biphenyl acetic acid (BPAA, an acidic drug), prednisolone (PD, a neutral drug) or chlorpheniramine maleate (CPM, a basic drug), and performed the in vitro release studies. The sacran-hydrogel containing BPAA, PD or CPM provided a sustained release profile in accordance with a quasi-Fickian diffusion model. Furthermore, the release rate of drugs from sacran-hydrogels can be controlled by adjusting the concentration of aluminum chloride as a cross linker. These results suggest the potential use of sacran-hydrogel as a sustained release system for drugs.
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31
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Selective accumulation of rare earth metal and heavy metal ions by a DNA-inorganic hybrid material. Polym J 2014. [DOI: 10.1038/pj.2014.5] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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32
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Hennebel T, Boon N, Maes S, Lenz M. Biotechnologies for critical raw material recovery from primary and secondary sources: R&D priorities and future perspectives. N Biotechnol 2013; 32:121-7. [PMID: 23994422 DOI: 10.1016/j.nbt.2013.08.004] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2013] [Revised: 08/09/2013] [Accepted: 08/10/2013] [Indexed: 11/29/2022]
Abstract
Europe is confronted with an increasing supply risk of critical raw materials. These can be defined as materials of which the risks of supply shortage and their impacts on the economy are higher compared to most of other raw materials. Within the framework of the EU Innovation Partnership on raw materials Initiative, a list of 14 critical materials was defined, including some bulk metals, industrial minerals, the platinum group metals and rare earth elements. To tackle the supply risk challenge, innovation is required with respect to sustainable primary mining, substitution of critical metals, and urban mining. In these three categories, biometallurgy can play a crucial role. Indeed, microbe-metal interactions have been successfully applied on full scale to win materials from primary sources, but are not sufficiently explored for metal recovery or recycling. On the one hand, this article gives an overview of the microbial strategies that are currently applied on full scale for biomining; on the other hand it identifies technologies, currently developed in the laboratory, which have a perspective for large scale metal recovery and the needs and challenges on which bio-metallurgical research should focus to achieve this ambitious goal.
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Affiliation(s)
- Tom Hennebel
- Department of Civil and Environmental Engineering, University of California at Berkeley, Berkeley, CA 94720, USA; Laboratory of Microbial Ecology and Technology (LabMET), Ghent University, Coupure Links 653, B-9000 Gent, Belgium
| | - Nico Boon
- Laboratory of Microbial Ecology and Technology (LabMET), Ghent University, Coupure Links 653, B-9000 Gent, Belgium
| | - Synthia Maes
- Laboratory of Microbial Ecology and Technology (LabMET), Ghent University, Coupure Links 653, B-9000 Gent, Belgium
| | - Markus Lenz
- Institute for Ecopreneurship, University of Applied Sciences and Arts Northwestern Switzerland (FHNW), School of Life Sciences, Gründenstrasse 40, 4132 Muttenz, Switzerland; Sub-Department of Environmental Technology, Wageningen University, 6700 EV Wageningen, The Netherlands.
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Mitsumata T, Miura T, Takahashi N, Kawai M, Okajima MK, Kaneko T. Ionic state and chain conformation for aqueous solutions of supergiant cyanobacterial polysaccharide. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2013; 87:042607. [PMID: 23679443 DOI: 10.1103/physreve.87.042607] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2013] [Revised: 04/15/2013] [Indexed: 06/02/2023]
Abstract
We have investigated the electric conductivity, dielectric relaxation behavior, and viscosity for the aqueous solution of cyanobacterial megamolecules, molecular weight =1.6×10(7) g/mol, named sacran. Sacran is an anionic polyelectrolyte which has carboxylate and sulfate groups on the saccharide chain. The electric conductivity and the zero shear viscosity demonstrated three crossover concentrations at 0.004, 0.02, and 0.1 wt%. The viscosity was found to be scaled as ~c(1.5), ~c(0.5), ~c(1.5), and ~c(3.0) with increasing the sacran concentration. At 0.1 wt%, the sacran chain formed a weak gel which exhibits macroscopic liquid crystal domains including Schlieren texture. Therefore, these crossover concentrations are considered to be the overlap concentration, entanglement concentration, and gelation concentration (or critical polyelectrolyte concentration), respectively. Dielectric relaxation analysis exhibited the fact that sacran has two types of counterions with different counterion-polyion interaction, i.e., strongly bound and loosely bound counterions. The dielectric parameters such as relaxation time or relaxation strength are sensitive to both the entanglement concentration and the gelation concentration, but not the overlap concentration. The number density of bound counterions calculated from the relaxation strength revealed that the counterion is condensed on the sacran chain with raising the sacran concentrations. The decrease in the charge density of the sacran chain reduces the repulsive force between the chains and this would cause the helix transformation or gelation behavior. The chain conformation of sacran in pure water and the gelation mechanism are discussed in relation with the behavior of polyelectrolytes and liquid crystals.
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Affiliation(s)
- Tetsu Mitsumata
- Department of Polymer Science and Engineering, Graduate School of Engineering, Yamagata University, Yonezawa 992-8510, Japan.
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Okajima MK, le Nguyen QT, Tateyama S, Masuyama H, Tanaka T, Mitsumata T, Kaneko T. Photoshrinkage in polysaccharide gels with trivalent metal ions. Biomacromolecules 2012; 13:4158-63. [PMID: 23121693 DOI: 10.1021/bm301440e] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The giant anionic polysaccharide "sacran", which is composed of 6-deoxyhexoses, pentoses, uronic acids as well as hexoses, showed hydrophobization and insolubilization phenomena in response to ultraviolet light irradiation. The sacran solution became turbid, and microparticles were formed by photoirradiation. To visualize the results of this photoreaction, anionic polysaccharide gels cross-linked by metal cations were used. As a result, we observed that sacran-gels with trivalent metal ions gradually contracted depending on the photoirradiation energy. In contrast, alginate gels used as a comparison degraded instead of contracting. This photoshrinkage of the sacran gels may be attributed to the hydrophobization of uronic acid based on photodecarboxylation. We propose that sacran-metal ion gels can function as effective, photoresponsive gels.
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Affiliation(s)
- Maiko K Okajima
- School of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan
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Okajima MK, le Nguyen QT, Nakamura M, Ogawa T, Kurata H, Kaneko T. Double-metal complexation of heterogels containing cyanobacterial polysaccharides. J Appl Polym Sci 2012. [DOI: 10.1002/app.38261] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Okajima MK, Nakamura M, Ogawa T, Kurata H, Mitsumata T, Kaneko T. Spongy Hydrogels of Cyanobacterial Polyanions Mediate Energy-Saving Electrolytic Metal-Refinement. Ind Eng Chem Res 2012. [DOI: 10.1021/ie301117p] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Maiko K. Okajima
- School of
Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa, 923-1292,
Japan
| | - Masatoshi Nakamura
- School of
Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa, 923-1292,
Japan
| | - Tetsuya Ogawa
- Institute for Chemical
Research, Kyoto University, Uji, Kyoto
611-0011, Japan
| | - Hiroki Kurata
- Institute for Chemical
Research, Kyoto University, Uji, Kyoto
611-0011, Japan
| | - Testu Mitsumata
- Department
of Polymer Science and Engineering, Graduate School of Engineering, Yamagata University, Yonezawa 992-8510, Japan
| | - Tatsuo Kaneko
- School of
Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa, 923-1292,
Japan
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Ngatu NR, Okajima MK, Yokogawa M, Hirota R, Eitoku M, Muzembo BA, Dumavibhat N, Takaishi M, Sano S, Kaneko T, Tanaka T, Nakamura H, Suganuma N. Anti-inflammatory effects of sacran, a novel polysaccharide from Aphanothece sacrum, on 2,4,6-trinitrochlorobenzene-induced allergic dermatitis in vivo. Ann Allergy Asthma Immunol 2011; 108:117-22. [PMID: 22289731 DOI: 10.1016/j.anai.2011.10.013] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2011] [Revised: 10/07/2011] [Accepted: 10/19/2011] [Indexed: 12/17/2022]
Abstract
BACKGROUND Sacran is a newly discovered sulfated polysaccharide extracted from an algae, Aphanothece sacrum, grown in a river of the Kyushu region in Japan. OBJECTIVE To evaluate sacran's inhibitory effect in 2,4,6-trinitrochlorobenzene (TNCB)-induced allergic dermatitis in NC/Nga mice. METHODS Sacran was extracted by acid and alkaline treatment of A sacrum cyanobacterial biomaterials. To sensitize mice, 150 μL of 5% TNCB was applied epicutaneously on the abdomen of each mouse on day 1 and challenged with 15 μL of 1% TNCB applied on the ear skin of mice on day 8 and then every other day to induce skin lesions. Serum levels of inflammatory markers were measured and histopathologic examination of ear skin specimens performed. On the other hand, sacran's transepidermal water loss was evaluated in 11 volunteer women with dry skin. RESULTS Epicutaneous application of sacran in mice has significantly inhibited the development of allergic dermatitis skin lesions and reduced the number of scratching behavior episodes (P < .01). In addition, sacran efficiently inhibited IgE (P < .001), tumor necrosis factor α (P = .02), interleukin 4, interleukin 5, and interferon γ (P < .01; vs buffer in the TNCB group) production and eosinophilic infiltration in the chemical allergen-exposed ear skin. In addition, sacran-treated body regions of human volunteers with dry skin significantly reduced transepidermal water loss levels compared with exogenous hyaluronic acid (P < .01), which is known to improve skin moisture and exert skin barrier repair activity. CONCLUSIONS This study suggests that sacran exerts anti-inflammatory effects by improving skin barrier function and reducing T(H)2 cytokine production.
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Affiliation(s)
- Nlandu Roger Ngatu
- Department of Environmental Medicine, Kochi Medical School, Kochi University, Nankoku, Kochi, Japan
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Okajima MK, Higashi T, Asakawa R, Mitsumata T, Kaneko D, Kaneko T, Ogawa T, Kurata H, Isoda S. Gelation behavior by the lanthanoid adsorption of the cyanobacterial extracellular polysaccharide. Biomacromolecules 2010; 11:3172-7. [PMID: 20923217 DOI: 10.1021/bm101012u] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The self-organization behavior of an extracellular polysaccharide (sacran) extracted from the cyanobacterium Aphanothece sacrum in response to lanthanoid ion adsorption was investigated. Consequently, cryogenic TEM images revealed that sacran could be cross-linked by Nd(3+) trivalent ions and formed a fibrous nanostructural network containing water. Furthermore, sacran adsorbed trivalent metal ions at a 3:1 ratio, which was the theoretical ionic adsorption and showed more efficient adsorption than alginate based on electric conductivity titration. The critical gelation concentrations, Cg, where sacran formed tough gels upon metal ion binding were estimated. The Cg for trivalent metal ions was lower than that for divalent ions, and the Cg for lanthanoid ions was particularly low at 10(-3) to 10(-4) M, changing every four elemental numbers. The extracellular matrix of Aphanothece sacrum, sacran, may adsorb metal ions to create fibrous nanostructures that reinforce the jelly matrix.
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Affiliation(s)
- Maiko K Okajima
- School of Materials Science, Japan Advanced Institute of Science and Technology, Asahidai, Nomi, Ishikawa 923-1292, Japan, Department of Polymer Science and Engineering, Graduate School of Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa, 992-8510, Japan, and Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
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