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Photopolymerized silk fibroin gel for advanced burn wound care. Int J Biol Macromol 2023; 233:123569. [PMID: 36758758 DOI: 10.1016/j.ijbiomac.2023.123569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 01/24/2023] [Accepted: 02/02/2023] [Indexed: 02/10/2023]
Abstract
The future of burn wound treatment lies in developing bioactive dressings for faster and more effective healing and regeneration. Silk fibroin (SF) hydrogels have proven regenerative abilities and are being explored as a burn wound dressing. However, unfavorable gelation conditions limit the processability and clinical application. Herein a white light-responsive photopolymerization technique was adapted for gelation via photooxidation of tyrosine. To render the gel suitable for application to irregular and non-planar burn surfaces, SF gel-incorporated dressing (SFD) was fabricated. The mild gelation conditions using white light afforded the loading of drugs for local delivery. The moisture balance ability of the dressing was confirmed by the favorable measures of swelling capacity (106 ± 1 %) and moisture retention (≈10 h). The in vitro cytocompatibility of the gel was confirmed using HaCaT cells. Finally, in vivo performance of the SFD was tested on a second-degree burn in a rodent model. The gross analysis and histological assessment revealed scarless healing in SFD-treated groups. Overall, the SFD developed in this work is shown to be a promising candidate for advanced burn wound care.
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Hashimoto T, Nakamura Y, Kakinoki S, Sano N, Kameda T, Tamada Y, Yamaoka T, Kurosu H. Immobilization of Arg-Gly-Asp peptides on silk fibroin via Gly-Ala-Gly-Ala-Gly-Ser sequences. Biotechnol J 2023; 18:e2200139. [PMID: 36424700 DOI: 10.1002/biot.202200139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2022] [Revised: 10/23/2022] [Accepted: 10/25/2022] [Indexed: 11/27/2022]
Abstract
A simple method by which the functional peptide of Gly-Arg-Gly-Asp-Ser (GRGDS) is immobilized on the surface of silk fibroin (SF) films via Gly-Ala-Gly-Ala-Gly-Ser (GAGAGS) sequences is proposed. GAGAGS, a repeating amino acid sequence in the crystal region of Bombyx mori SF, performs a key role in interacting with and immobilizing SF molecules. Immobilization by this proposed method involves no chemical reaction, thereby preserving the original properties of the SF molecule. The density of GRGDS peptides existing on SF film was found to be higher in the GAGAGS-bound type than in the non-GAGAGS-bound type. Furthermore, results showed that the amount of immobilized (GAGAGS)GRGDS peptide increased as the β-sheet crystallization was promoted in the SF film. Fibroblasts, which adhered to the surface of the SF film, showed more extensibility because of the (GAGAGS)GRGDS immobilization, which suggests that the cell adhesion activity of RGD is functioning effectively.
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Affiliation(s)
- Tomoko Hashimoto
- The Faculty of Textile Science and Technology, Shinshu University, Ueda, Nagano, Japan.,Faculty of Human Life and Environmental Sciences, Department of Clothing Environmental Science, Nara Women's University, Kitauoya-Nishimachi, Nara, Japan.,Department of Biomedical Engineering, National Cerebral and Cardiovascular Center Research Institute, Suita, Osaka, Japan
| | - Yuka Nakamura
- Faculty of Human Life and Environmental Sciences, Department of Clothing Environmental Science, Nara Women's University, Kitauoya-Nishimachi, Nara, Japan
| | - Sachiro Kakinoki
- Department of Biomedical Engineering, National Cerebral and Cardiovascular Center Research Institute, Suita, Osaka, Japan.,Faculty of Chemistry, Materials and Bioengineering, Department of Chemistry and Materials Engineering, Kansai University, Suita, Osaka, Japan
| | - Naoko Sano
- Faculty of Human Life and Environmental Sciences, Department of Clothing Environmental Science, Nara Women's University, Kitauoya-Nishimachi, Nara, Japan.,Ionoptika Ltd., Eastleigh, United Kingdom
| | - Tsunenori Kameda
- Silk Materials Research Group, National Agriculture and Food Research Organization, Tsukuba, Ibaraki, Japan
| | - Yasushi Tamada
- The Faculty of Textile Science and Technology, Shinshu University, Ueda, Nagano, Japan
| | - Tetsuji Yamaoka
- Department of Biomedical Engineering, National Cerebral and Cardiovascular Center Research Institute, Suita, Osaka, Japan
| | - Hiromichi Kurosu
- Faculty of Human Life and Environmental Sciences, Department of Clothing Environmental Science, Nara Women's University, Kitauoya-Nishimachi, Nara, Japan
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3
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Silk Fibroin Conjugated with Heparin Promotes Epithelialization and Wound Healing. Polymers (Basel) 2022; 14:polym14173582. [PMID: 36080656 PMCID: PMC9460566 DOI: 10.3390/polym14173582] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 08/21/2022] [Accepted: 08/24/2022] [Indexed: 11/23/2022] Open
Abstract
Silk fibroin (SF) has attracted attention as a base biomaterial that could be suitable in many applications because of its shape and structure. Highly functional SF has been developed to promote tissue regeneration with heparin conjugation. However, the hydrophobic three-dimensional structure of SF makes it difficult to bind to high-molecular-weight and hydrophilic compounds such as heparin. In this study, sufficient heparin modification was achieved using tyrosine residues as reaction points to improve cellular response. As it was considered that there was a trade-off between the improvement of water wettability and cell responsiveness induced by heparin modification, influences on the structure, and mechanical properties, the structure and physical properties of the SF conjugated with heparin were extensively evaluated. Results showed that increased amounts of heparin modification raised heparin content and water wettability on film surfaces even though SF formation was not inhibited. In addition, the proliferation of endothelial cells and fibroblasts were enhanced when a surface with sufficient heparin assumed its potential in assisting wound healing. This research emphasizes the importance of material design focusing on the crystal structure inherent in SF in the development of functionalized SF materials.
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Li D, Xia C, Chen X, Li Q, Li J, Qian X. Fabrication of novel ruthenium loaded silk fibroin nanomaterials for fingolimod release improved antitumor efficacy in hepatocellular carcinoma. JOURNAL OF BIOMATERIALS SCIENCE. POLYMER EDITION 2022; 33:1955-1972. [PMID: 35820069 DOI: 10.1080/09205063.2022.2090348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Cancer targeted nanomaterials-based drug delivery systems have been described as promising. In this work, we employed silk fibroin (SF), ruthenium nanomaterials (RuNMs), heptapeptide (T7), and fingolimod (FTY720) to construct a pH-responsive smart nanomaterials drug delivery system. They were spherical with a mean size of around 120 nm, which may have contributed to the improved penetration and retention of the NMs in tumour areas. T7-FTY720@SF-RuNMs had an encapsulation efficiency (EE) of 72.51 ± 4.02%. When the pH of an environment is acidic, the release of FTY720 from nanocarriers is enhanced. T7-FTY720@SF-RuNMs demonstrated increased cellular uptake selective and anticancer efficacy for hepatocellular cancer in both in vitro and in vivo experiments. Additionally, the in vivo biodistribution investigation showed that T7-FTY720@SF-RuNMs could efficiently aggregate in the tumour location, improving their in vivo potential to kill cancer cells. T7-FTY720@SF-RuNMs demonstrated little toxicity to tumour-bearing animals in investigations of histology and immunohistochemistry, showing that the fabricated NMs are biocompatible in vivo. For the treatment of hepatocellular cancer, the T7-FTY720@SF-RuNMs delivery method offers significant promise.
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Affiliation(s)
- Dong Li
- Department of Gastroenterology, the First People's Hospital of Wenling, Wenling, China
| | - Chenmei Xia
- Department of Gastroenterology, the First People's Hospital of Wenling, Wenling, China
| | - Xia Chen
- Department of Gastroenterology, the First People's Hospital of Wenling, Wenling, China
| | - Qianqian Li
- Department of Gastroenterology, the First People's Hospital of Wenling, Wenling, China
| | - Jian Li
- Department of General Surgery, Baoji Hospital, Baoji, China
| | - Xiaoqi Qian
- Department of Gastroenterology, the First People's Hospital of Wenling, Wenling, China
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Yamano M, Hirose R, Lye PY, Takaki K, Maruta R, On Liew MW, Sakurai S, Mori H, Kotani E. Bioengineered Silkworm for Producing Cocoons with High Fibroin Content for Regenerated Fibroin Biomaterial-Based Applications. Int J Mol Sci 2022; 23:ijms23137433. [PMID: 35806440 PMCID: PMC9267247 DOI: 10.3390/ijms23137433] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 06/12/2022] [Accepted: 07/01/2022] [Indexed: 11/25/2022] Open
Abstract
Silk fibroin exhibits high biocompatibility and biodegradability, making it a versatile biomaterial for medical applications. However, contaminated silkworm-derived substances in remnant sericin from the filature and degumming process can result in undesired immune reactions and silk allergy, limiting the widespread use of fibroin. Here, we established transgenic silkworms with modified middle silk glands, in which sericin expression was repressed by the ectopic expression of cabbage butterfly-derived cytotoxin pierisin-1A, to produce cocoons composed solely of fibroin. Intact, nondegraded fibroin can be prepared from the transgenic cocoons without the need for sericin removal by the filature and degumming steps that cause fibroin degradation. A wide-angle X-ray diffraction analysis revealed low crystallinity in the transgenic cocoons. However, nondegraded fibroin obtained from transgenic cocoons enabled the formation of fibroin sponges with varying densities by using 1–5% (v/v) alcohol. The effective chondrogenic differentiation of ATDC5 cells was induced following their cultivation on substrates coated with intact fibroin. Our results showed that intact, allergen-free fibroin can be obtained from transgenic cocoons without the need for sericin removal, providing a method to produce fibroin-based materials with high biocompatibility for biomedical uses.
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Affiliation(s)
- Mana Yamano
- Department of Applied Biology, Kyoto Institute of Technology, Sakyo-ku, Kyoto 606-8585, Japan; (M.Y.); (R.H.); (P.Y.L.); (K.T.); (R.M.); (H.M.)
| | - Ryoko Hirose
- Department of Applied Biology, Kyoto Institute of Technology, Sakyo-ku, Kyoto 606-8585, Japan; (M.Y.); (R.H.); (P.Y.L.); (K.T.); (R.M.); (H.M.)
| | - Ping Ying Lye
- Department of Applied Biology, Kyoto Institute of Technology, Sakyo-ku, Kyoto 606-8585, Japan; (M.Y.); (R.H.); (P.Y.L.); (K.T.); (R.M.); (H.M.)
| | - Keiko Takaki
- Department of Applied Biology, Kyoto Institute of Technology, Sakyo-ku, Kyoto 606-8585, Japan; (M.Y.); (R.H.); (P.Y.L.); (K.T.); (R.M.); (H.M.)
- Biomedical Research Center, Kyoto Institute of Technology, Sakyo-ku, Kyoto 606-8585, Japan
| | - Rina Maruta
- Department of Applied Biology, Kyoto Institute of Technology, Sakyo-ku, Kyoto 606-8585, Japan; (M.Y.); (R.H.); (P.Y.L.); (K.T.); (R.M.); (H.M.)
| | - Mervyn Wing On Liew
- Institute for Research in Molecular Medicine, Universiti Sains Malaysia, Minden, Penang 11800, Malaysia;
| | - Shinichi Sakurai
- Department of Biobased Materials Science, Kyoto Institute of Technology, Sakyo-ku, Kyoto 606-8585, Japan;
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
| | - Hajime Mori
- Department of Applied Biology, Kyoto Institute of Technology, Sakyo-ku, Kyoto 606-8585, Japan; (M.Y.); (R.H.); (P.Y.L.); (K.T.); (R.M.); (H.M.)
| | - Eiji Kotani
- Department of Applied Biology, Kyoto Institute of Technology, Sakyo-ku, Kyoto 606-8585, Japan; (M.Y.); (R.H.); (P.Y.L.); (K.T.); (R.M.); (H.M.)
- Biomedical Research Center, Kyoto Institute of Technology, Sakyo-ku, Kyoto 606-8585, Japan
- Correspondence: ; Tel.: +81-75-724-7774
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6
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Higher Gene Expression Related to Wound Healing by Fibroblasts on Silk Fibroin Biomaterial than on Collagen. Molecules 2020; 25:molecules25081939. [PMID: 32331316 PMCID: PMC7221890 DOI: 10.3390/molecules25081939] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 04/17/2020] [Accepted: 04/20/2020] [Indexed: 01/01/2023] Open
Abstract
Silk fibroin (SF), which offers the benefits of biosafety, biocompatibility, and mechanical strength, has potential for use as a good biomedical material, especially in the tissue engineering field. This study investigated the use of SF biomaterials as a wound dressing compared to commercially available collagen materials. After human fibroblasts (WI-38) were cultured on both films and sponges, their cell motilities and gene expressions related to wound repair and tissue reconstruction were evaluated. Compared to the collagen film (Col film), the SF film induced higher cell motility; higher expressions of genes were observed on the SF film. Extracellular matrix production-related genes were up-regulated in WI-38 fibroblasts cultured on the SF sponges. These results suggest that SF-based biomaterials can accelerate wound healing and tissue reconstruction. They can be useful biomaterials for functional wound dressings.
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7
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Zhu S, Wang J, Sun Z. Observation of co-culturing cells on porous silk fibroin films. BIOINSPIRED BIOMIMETIC AND NANOBIOMATERIALS 2019. [DOI: 10.1680/jbibn.17.00030] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Porous silk fibroin films (PSFFs) are widely used in skin regeneration. Prevascularization of PSFFs is a successful strategy for enhancing the survival of engineered tissues in vivo. The adhesion and migration of human umbilical vein endothelial cells (HUVECs) and fibroblasts on PSFFs were observed by scanning electron microscopy and confocal laser scanning microscopy after vital staining of the cells. PSFFs could attract a large number of HUVECs and fibroblasts to pores in an interesting alignment and support them to spread well from the outside of pores to the center of PSFFs to form cell layers. PSFFs showed minor structural changes due to less degradation for 12 d culture, and cell layers overlapped from pores to the center in PSFFs. The total DNA assay indicated excellent cell proliferation on PSFFs on days 1 and 6 and no difference between co-culturing HUVECs and mono-HUVECs and monofibroblasts. PSFFs could guide cell migration and arrangement to form pore-centered and vessel-like structures without additional coating of proteins. The authors’ aim was to study the potential prevascularization of porous silk fibroin scaffolds by co-culturing HUVECs and fibroblasts. This model has potential application for angiogenesis in dermis regeneration in the future and provides a suitable microenvironment for the development of capillary-like structures.
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Affiliation(s)
- Shixin Zhu
- Medical School, Soochow University, Suzhou, China
| | - JiaMin Wang
- Medical School, Soochow University, Suzhou, China
| | - Ziling Sun
- Medical School, Soochow University, Suzhou, China
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Smith LE, Bryant C, Krasowska M, Cowin AJ, Whittle JD, MacNeil S, Short RD. Haptotatic Plasma Polymerized Surfaces for Rapid Tissue Regeneration and Wound Healing. ACS APPLIED MATERIALS & INTERFACES 2016; 8:32675-32687. [PMID: 27934156 DOI: 10.1021/acsami.6b11320] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Skin has a remarkable capacity for regeneration; however, with an ever aging population, there is a growing burden to the healthcare system from chronic wounds. Novel therapies are required to address the problems associated with nonhealing chronic wounds. Novel wound dressings that can encourage increased reepithelialization could help to reduce the burden of chronic wounds. A suite of chemically defined surfaces have been produced using plasma polymerization, and the ability of these surfaces to support the growth of primary human skin cells has been assessed. Additionally, the ability of these surfaces to modulate cell migration and morphology has also been investigated. Keratinocytes and endothelial cells were extremely sensitive to surface chemistry showing increased viability and migration with an increased number of carboxylic acid functional groups. Fibroblasts proved to be more tolerant to changes in surface chemistry; however, these cells migrated fastest over amine-functionalized surfaces. The novel combination of comprehensive chemical characterization coupled with the focus on cell migration provides a unique insight into how a material's physicochemical properties affect cell migration.
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Affiliation(s)
- Louise E Smith
- Wound Management Innovation Cooperative Research Centre , Brisbane 4059, Queensland, Australia
- Future Industries Institute, University of South Australia , Adelaide 5095, South Australia, Australia
| | - Christian Bryant
- Wound Management Innovation Cooperative Research Centre , Brisbane 4059, Queensland, Australia
| | - Marta Krasowska
- Future Industries Institute, University of South Australia , Adelaide 5095, South Australia, Australia
- School of Information Technology and Mathematical Sciences, University of South Australia , Adelaide, 5095, South Australia, Australia
| | - Allison J Cowin
- Wound Management Innovation Cooperative Research Centre , Brisbane 4059, Queensland, Australia
- Future Industries Institute, University of South Australia , Adelaide 5095, South Australia, Australia
| | - Jason D Whittle
- Wound Management Innovation Cooperative Research Centre , Brisbane 4059, Queensland, Australia
- School of Engineering, University of South Australia , Adelaide 5095, South Australia, Australia
| | - Sheila MacNeil
- Kroto Research Institute, University of Sheffield , Sheffield S3 7HQ, South Yorkshire, United Kingdom
| | - Robert D Short
- Wound Management Innovation Cooperative Research Centre , Brisbane 4059, Queensland, Australia
- Future Industries Institute, University of South Australia , Adelaide 5095, South Australia, Australia
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Teramoto H, Nakajima KI, Kojima K. Azide-Incorporated Clickable Silk Fibroin Materials with the Ability to Photopattern. ACS Biomater Sci Eng 2016; 2:251-258. [DOI: 10.1021/acsbiomaterials.5b00469] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Hidetoshi Teramoto
- Genetically Modified Organism
Research Center, National Institute of Agrobiological Sciences (NIAS), 1-2
Ohwashi, Tsukuba, Ibaraki 305-8634, Japan
| | - Ken-ichi Nakajima
- Genetically Modified Organism
Research Center, National Institute of Agrobiological Sciences (NIAS), 1-2
Ohwashi, Tsukuba, Ibaraki 305-8634, Japan
| | - Katsura Kojima
- Genetically Modified Organism
Research Center, National Institute of Agrobiological Sciences (NIAS), 1-2
Ohwashi, Tsukuba, Ibaraki 305-8634, Japan
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10
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Terada D, Yokoyama Y, Hattori S, Kobayashi H, Tamada Y. The outermost surface properties of silk fibroin films reflect ethanol-treatment conditions used in biomaterial preparation. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 58:119-26. [PMID: 26478294 DOI: 10.1016/j.msec.2015.07.041] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2015] [Revised: 06/16/2015] [Accepted: 07/22/2015] [Indexed: 11/28/2022]
Abstract
Silk fibroin has attracted interest as a biomaterial, given its many excellent properties. Cell attachment to silk substrates is usually weaker than to standard culture dishes, and cells cultured on silk films or hydrogels typically form spheroids and micro-aggregates. However, too little is known about the higher order structures and behavior of fibroin under different conditions to explain the features of silk fibroin as a culture substrate. For instance, different biomaterial surfaces, with distinct effects on cell culture, can be achieved by varying the conditions of crystallization by alcohol immersion. Here, we show that treatment of fibroin film with <80% ethanol results in a jelly-like, hydrated hydrogel as the outermost surface layer; fibroblasts preferably aggregate, rather than attach individually to such a hydrogel surface, and therefore aggregate into spheroids. In contrast, a fibroin film treated with >90% ethanol has a harder surface than the <80% ethanol-treated fibroin, to which individual cells prefer to attach (and then expand on the surface), rather than to aggregate. We discuss the influence of alcohol concentration on the surface properties, based on surface analysis of the films. The surface analysis involved assessment of static and dynamic contact angles, zeta potential, changes in crystallinity and microscopic morphology of electrospun fibers, and texture changes of the outermost surface at a nanometer-scale captured by a scanning probe microscope.
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Affiliation(s)
- Dohiko Terada
- Toyama Industrial Technology Center, Futagami-cho 150, Takaoka, Toyama, Japan
| | - Yoshiyuki Yokoyama
- Toyama Industrial Technology Center, Futagami-cho 150, Takaoka, Toyama, Japan
| | - Shinya Hattori
- National Institute for Materials Science, Sengen 1-2-1, Tsukuba, Ibaraki, Japan
| | - Hisatoshi Kobayashi
- National Institute for Materials Science, Sengen 1-2-1, Tsukuba, Ibaraki, Japan
| | - Yasushi Tamada
- National Institute of Agrobiological Sciences, Ohwashi 1-2, Tsukuba, Ibaraki, Japan.
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Otaka A, Takahashi K, Takeda YS, Kambe Y, Kuwana Y, Tamada Y, Tomita N. Quantification of cell co-migration occurrences during cell aggregation on fibroin substrates. Tissue Eng Part C Methods 2014; 20:671-80. [PMID: 24341914 DOI: 10.1089/ten.tec.2013.0344] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
A quantitative analytical method was proposed for measuring cell co-migration, which was defined as two or more cells migrating together. To accurately identify and quantify this behavior, cell migration on fibroin substrates was analyzed with respect to intercellular distance. Specifically, cell size was characterized by major diameter, and then, based on these measurements and cell center data, a specific threshold distance for defining co-migration was determined after analyzing cell motion using the Voronoi diagram method. The results confirmed that co-migration occurrences of rounded cells were significantly more stable on fibroin than on ProNectin substrates under the present experimental conditions. The cell co-migration analysis method in this article was shown to be successful in evaluating the stability of cell co-migration and also suggested the presence of "critical distance" where two cells interact on fibroin substrates. With further research, the cell co-migration analysis method and "critical distance" may prove to be capable of identifying the aggregation behavior of other cells on different materials, making it a valuable tool that can be used in tissue engineering design.
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Affiliation(s)
- Akihisa Otaka
- 1 Department of Mechanical Engineering and Science, Graduate School of Engineering, Kyoto University , Kyoto, Japan
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