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Chen Z, Zhong N, Wen J, Jia M, Guo Y, Shao Z, Zhao X. Porous Three-Dimensional Silk Fibroin Scaffolds for Tracheal Epithelial Regeneration in Vitro and in Vivo. ACS Biomater Sci Eng 2018; 4:2977-2985. [PMID: 33435018 DOI: 10.1021/acsbiomaterials.8b00419] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The regeneration of functional epithelial lining is critical for artificial grafts to repair tracheal defects. Although silk fibroin (SF) scaffolds have been widely studied for biomedical application (e.g., artificial skin), its potential for tracheal substitute and epithelial regeneration is still unknown. In this study, we fabricated porous three-dimensional (3D) silk fibroin scaffolds and cocultured them with primary human tracheobronchial epithelial cells (HBECs) for 21 days in vitro. Examined by scanning electronic microscopy (SEM) and calcein-AM staining with inverted phase contrast microscopy, the SF scaffolds showed excellent properties of promoting cell growth and proliferation for at least 21 days with good viability. In vivo, the porous 3D SF scaffolds (n = 18) were applied to repair a rabbit anterior tracheal defect. In the control group (n = 18), rabbit autologous pedicled trachea wall without epithelium, an ideal tracheal substitute, was implanted in situ. Observing by endoscopy and computed tomography (CT) scan, the repaired airway segment showed no wall collapse, granuloma formation, or stenosis during an 8-week interval in both groups. SEM and histological examination confirmed the airway epithelial growth on the surface of porous SF scaffolds. Both the epithelium repair speed and the epithelial cell differentiation degree in the SF scaffold group were comparable to those in the control group. Neither severe inflammation nor excessive fibrosis occurred in both groups. In summary, the porous 3D SF scaffold is a promising biomaterial for tracheal repair by successfully supporting tracheal wall contour and promoting tracheal epithelial regeneration.
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Affiliation(s)
- Zhongchun Chen
- Department of Otorhinolaryngology-Head and Neck Surgery, Huashan Hospital, Fudan University, 12 Middle Wu Lu Mu Qi Road, Shanghai 200040, China
| | - Nongping Zhong
- Department of Otorhinolaryngology-Head and Neck Surgery, Huashan Hospital, Fudan University, 12 Middle Wu Lu Mu Qi Road, Shanghai 200040, China
| | - Jianchuan Wen
- Department of Macromolecular Science and the Laboratory of Advanced Materials, Fudan University, Shanghai 200433, China
| | - Minghui Jia
- Department of Otorhinolaryngology-Head and Neck Surgery, Huashan Hospital, Fudan University, 12 Middle Wu Lu Mu Qi Road, Shanghai 200040, China
| | - Yongwei Guo
- Department of Otorhinolaryngology-Head and Neck Surgery, Huashan Hospital, Fudan University, 12 Middle Wu Lu Mu Qi Road, Shanghai 200040, China
| | - Zhengzhong Shao
- Department of Macromolecular Science and the Laboratory of Advanced Materials, Fudan University, Shanghai 200433, China
| | - Xia Zhao
- Department of Otorhinolaryngology-Head and Neck Surgery, Huashan Hospital, Fudan University, 12 Middle Wu Lu Mu Qi Road, Shanghai 200040, China
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Guo Y, Chen Z, Wen J, Jia M, Shao Z, Zhao X. A simple semi-quantitative approach studying the in vivo degradation of regenerated silk fibroin scaffolds with different pore sizes. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017. [DOI: 10.1016/j.msec.2017.05.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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Dao ATN, Nakayama K, Shimokata J, Taniike T. Multilateral characterization of recombinant spider silk in thermal degradation. Polym Chem 2017. [DOI: 10.1039/c6py01954d] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Elucidating the complex mechanism of thermo-oxidative degradation of recombinant spider silk by systematic characterization and correlation coefficient approach.
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Affiliation(s)
- Anh T. N. Dao
- School of Materials Science
- Japan Advanced Institute of Science and Technology
- Nomi
- Japan
| | - K. Nakayama
- School of Materials Science
- Japan Advanced Institute of Science and Technology
- Nomi
- Japan
| | - J. Shimokata
- School of Materials Science
- Japan Advanced Institute of Science and Technology
- Nomi
- Japan
- Spiber Inc
| | - T. Taniike
- School of Materials Science
- Japan Advanced Institute of Science and Technology
- Nomi
- Japan
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Powell J, Kalakewich K, Uribe-Romo FJ, Harper JK. Solid-state NMR and DFT predictions of differences in COOH hydrogen bonding in odd and even numbered n-alkyl fatty acids. Phys Chem Chem Phys 2016; 18:12541-9. [DOI: 10.1039/c6cp00416d] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
n-Alkyl fatty acids with an even or odd number of carbons are predicted to differ in COOH hydrogen bonding in the solid state.
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Affiliation(s)
- Jacob Powell
- Department of Chemistry
- University of Central Florida
- Orlando
- USA
| | | | | | - James K. Harper
- Department of Chemistry
- University of Central Florida
- Orlando
- USA
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Cao Z, Wen J, Yao J, Chen X, Ni Y, Shao Z. Facile fabrication of the porous three-dimensional regenerated silk fibroin scaffolds. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2013; 33:3522-9. [DOI: 10.1016/j.msec.2013.04.045] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2012] [Revised: 04/22/2013] [Accepted: 04/22/2013] [Indexed: 11/26/2022]
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Yamada K, Kang S, Takimoto K, Hattori M, Shirata K, Kawauchi S, Deguchi K, Shimizu T, Watanabe J. Structural analysis of a banana-liquid crystal in the B4 phase by solid-state NMR. J Phys Chem B 2013; 117:6830-8. [PMID: 23654351 DOI: 10.1021/jp402237y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
In this paper, we present a structural investigation of 1,3-phenylene bis[4-((4-10-decyloxyphenyl)iminomethyl)-benzoate], known as a banana-liquid crystal, in the B4 phase, which was performed by solid-state nuclear magnetic resonance (NMR) methodology combined with quantum chemical calculations. The present solid-state NMR measurements including (13)C CPMAS, 2D TOSS-deTOSS, dipole-dephase, 1D and 2D EXSY, and MAS-j-HMQC provided accurate spectral assignments and unambiguous NMR parameters such as (13)C chemical shift tensors, which were used for construction of the three-dimensional structure with the aid of density functional theory calculations. In the obtained molecular structure, two arms of the bent-core molecule are asymmetrically expanded such that the direction of the dipole moment is off alignment with respect to the middle line of the center benzene ring. It is this antisymmetric structure that is the origin of the twisted helical system in the B4 phase.
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Affiliation(s)
- Kazuhiko Yamada
- Department of Chemistry and Materials Science, Graduate School of Science and Engineering, Tokyo Institute of Technology, O-okayama, Tokyo 152-8552, Japan.
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Li F, Shi P, Li J, Yang F, Wang T, Zhang W, Gao F, Ding W, Li D, Li J, Xiong Y, Sun J, Gong W, Tian C, Wang J. A Genetically Encoded19F NMR Probe for Tyrosine Phosphorylation. Angew Chem Int Ed Engl 2013; 52:3958-62. [DOI: 10.1002/anie.201300463] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2013] [Indexed: 11/09/2022]
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Li F, Shi P, Li J, Yang F, Wang T, Zhang W, Gao F, Ding W, Li D, Li J, Xiong Y, Sun J, Gong W, Tian C, Wang J. A Genetically Encoded19F NMR Probe for Tyrosine Phosphorylation. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201300463] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Fu W, Sun P. Solid state NMR study of hydrogen bonding, miscibility, and dynamics in multiphase polymer systems. ACTA ACUST UNITED AC 2011. [DOI: 10.1007/s11458-011-0254-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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Ultrahigh resolution protein structures using NMR chemical shift tensors. Proc Natl Acad Sci U S A 2011; 108:16974-9. [PMID: 21969532 DOI: 10.1073/pnas.1103728108] [Citation(s) in RCA: 82] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
NMR chemical shift tensors (CSTs) in proteins, as well as their orientations, represent an important new restraint class for protein structure refinement and determination. Here, we present the first determination of both CST magnitudes and orientations for (13)Cα and (15)N (peptide backbone) groups in a protein, the β1 IgG binding domain of protein G from Streptococcus spp., GB1. Site-specific (13)Cα and (15)N CSTs were measured using synchronously evolved recoupling experiments in which (13)C and (15)N tensors were projected onto the (1)H-(13)C and (1)H-(15)N vectors, respectively, and onto the (15)N-(13)C vector in the case of (13)Cα. The orientations of the (13)Cα CSTs to the (1)H-(13)C and (13)C-(15)N vectors agreed well with the results of ab initio calculations, with an rmsd of approximately 8°. In addition, the measured (15)N tensors exhibited larger reduced anisotropies in α-helical versus β-sheet regions, with very limited variation (18 ± 4°) in the orientation of the z-axis of the (15)N CST with respect to the (1)H-(15)N vector. Incorporation of the (13)Cα CST restraints into structure calculations, in combination with isotropic chemical shifts, transferred echo double resonance (13)C-(15)N distances and vector angle restraints, improved the backbone rmsd to 0.16 Å (PDB ID code 2LGI) and is consistent with existing X-ray structures (0.51 Å agreement with PDB ID code 2QMT). These results demonstrate that chemical shift tensors have considerable utility in protein structure refinement, with the best structures comparable to 1.0-Å crystal structures, based upon empirical metrics such as Ramachandran geometries and χ(1)/χ(2) distributions, providing solid-state NMR with a powerful tool for de novo structure determination.
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Saitô H, Ando I, Ramamoorthy A. Chemical shift tensor - the heart of NMR: Insights into biological aspects of proteins. PROGRESS IN NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY 2010; 57:181-228. [PMID: 20633363 PMCID: PMC2905606 DOI: 10.1016/j.pnmrs.2010.04.005] [Citation(s) in RCA: 136] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2010] [Accepted: 04/26/2010] [Indexed: 05/19/2023]
Affiliation(s)
- Hazime Saitô
- Department of Life Science, Himeji Institute of Technology, University of Hyogo, Kamigori, Hyog, 678-1297, Japan
| | - Isao Ando
- Department of Chemistry and Materials Science, Tokyo Institute of Technology, Ookayama, Meguro-ku, Tokyo, 152-0033, Japan
| | - Ayyalusamy Ramamoorthy
- Biophysics and Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, MI 48109-1055, USA
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Hesse-Ertelt S, Witter R, Ulrich AS, Kondo T, Heinze T. Spectral assignments and anisotropy data of cellulose I(alpha): 13C-NMR chemical shift data of cellulose I(alpha) determined by INADEQUATE and RAI techniques applied to uniformly 13C-labeled bacterial celluloses of different Gluconacetobacter xylinus strains. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2008; 46:1030-1036. [PMID: 18781703 DOI: 10.1002/mrc.2311] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Solid-state (13)C-NMR spectroscopy was used to characterize native cellulose pellicles from two strains of Gluconacetobacter xylinus (ATCC 53582, ATCC 23769), which had been statically cultivated in Hestrin-Schramm (HS) medium containing fully (13)C-labeled beta-D-glucose-U-(13)C(6) as the sole source of carbon. For both samples, the (13)C-NMR chemical shifts were completely assigned for each (13)C-labeled site of cellulose I(alpha) with the aid of 2D refocused INADEQUATE NMR. To determine the principal chemical shift tensor components, a pulse sequence based on the recoupling of anisotropy information (RAI) was applied at 10 kHz MAS. The detailed (13)C tensors of cellulose I(alpha) from different bacterial celluloses are thus available now for the first time, and these results have been compared with previously published data of nonenriched material and with theoretical predictions.
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Affiliation(s)
- Stephanie Hesse-Ertelt
- Centre of Excellence for Polysaccharide Research, Friedrich Schiller University of Jena, Humboldtstrasse 10, D-07743 Jena, Germany.
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Wylie BJ, Rienstra CM. Multidimensional solid state NMR of anisotropic interactions in peptides and proteins. J Chem Phys 2008; 128:052207. [PMID: 18266412 DOI: 10.1063/1.2834735] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Accurate determinations of chemical shift anisotropy (CSA) tensors are valuable for NMR of biological systems. In this review we describe recent developments in CSA measurement techniques and applications, particularly in the context of peptides and proteins. These techniques include goniometeric measurements of single crystals, slow magic-angle spinning studies of powder samples, and CSA recoupling under moderate to fast MAS. Experimental CSA data can be analyzed by comparison with ab initio calculations for structure determination and refinement. This approach has particularly high potential for aliphatic (13)C analysis, especially Calpha tensors which are directly related to structure. Carbonyl and (15)N CSA tensors demonstrate a more complex dependence upon hydrogen bonding and electrostatics, in addition to conformational dependence. The improved understanding of these tensors and the ability to measure them quantitatively provide additional opportunities for structure determination, as well as insights into dynamics.
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Affiliation(s)
- Benjamin J Wylie
- Department of Chemistry, Department of Biochemistry and Center for Biophysics and Computational Biology, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, Illinois 61801, USA
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Mou Y, Chen PH, Lee HW, Chan JCC. Determination of chemical shift anisotropies of unresolved carbonyl sites by C-alpha detection under magic-angle spinning. JOURNAL OF MAGNETIC RESONANCE (SAN DIEGO, CALIF. : 1997) 2007; 187:352-6. [PMID: 17524685 DOI: 10.1016/j.jmr.2007.05.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2007] [Revised: 04/03/2007] [Accepted: 05/06/2007] [Indexed: 05/15/2023]
Abstract
We demonstrate that the static powder pattern line shape of chemical shift anisotropy (CSA) can be obtained for unresolved carbonyl sites of polypeptides under magic-angle spinning. The CSA interaction is first recoupled at the carbonyl site. The phase factors associated with the CSA recoupling are then transferred to the adjacent alpha carbon by an isotropic polarization transfer based on scalar spin-spin coupling. Because alpha carbons of polypeptides are usually better resolved, we can then obtain the CSA static powder pattern line shapes of the carbonyl sites after Fourier transformation in the second dimension. We validate our approach experimentally by measurements on [U-(13)C, (15)N]-l-alanine, [U-(13)C, (15)N]-l-valine and prion fibrils with uniform (13)C and (15)N labels on selected residues.
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Affiliation(s)
- Yun Mou
- Department of Chemistry, National Taiwan University, No. 1 Section 4 Roosevelt Road, Taipei, Taiwan
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Wylie BJ, Sperling LJ, Frericks HL, Shah GJ, Franks WT, Rienstra CM. Chemical-Shift Anisotropy Measurements of Amide and Carbonyl Resonances in a Microcrystalline Protein with Slow Magic-Angle Spinning NMR Spectroscopy. J Am Chem Soc 2007; 129:5318-9. [PMID: 17425317 DOI: 10.1021/ja0701199] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Benjamin J Wylie
- Department of Chemistry, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, Illinois 61801, USA
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Lefèvre T, Rousseau ME, Pézolet M. Protein secondary structure and orientation in silk as revealed by Raman spectromicroscopy. Biophys J 2007; 92:2885-95. [PMID: 17277183 PMCID: PMC1831708 DOI: 10.1529/biophysj.106.100339] [Citation(s) in RCA: 251] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Taking advantage of recent advances in polarized Raman microspectroscopy, and based on a rational decomposition of the amide I band, the conformation and orientation of proteins have been determined for cocoon silks of the silkworms Bombyx mori and Samia cynthia ricini and dragline silks of the spiders Nephila clavipes and Nephila edulis. This study distinguished between band components due to beta-sheets, beta-turns, 3(1)-helices, and unordered structure for the four fibers. For B. mori, the beta-sheet content is 50%, which matches the proportion of residues that form the GAGAGS fibroin motifs. For the Nephila dragline and S. c. ricini cocoon, the beta-sheet content (36-37% and 45%, respectively) is higher than the proportion of residues that belong to polyalanine blocks (18% and 42%, respectively), showing that adjacent GGA motifs are incorporated into the beta-sheets. Nephila spidroins contain fewer beta-sheets and more flexible secondary structures than silkworm fibroins. The amorphous polypeptide chains are preferentially aligned parallel to the fiber direction, although their level of orientation is much lower than that of beta-sheets. Overall, the results show that the four silks exhibit a common molecular organization, with mixtures of different amounts of beta-sheets and flexible structures, which are organized with specific orientation levels.
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Affiliation(s)
- Thierry Lefèvre
- Centre de Recherche en Sciences et Ingénierie des Macromolécules, Centre de Recherche sur la Fonction, la Structure et l'Ingénierie des Protéines, Département de Chimie, Université Laval, Pavillon Alexandre-Vachon, Québec, Canada
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Witter R, Sternberg U, Hesse S, Kondo T, Koch FT, Ulrich AS. 13C Chemical Shift Constrained Crystal Structure Refinement of Cellulose Iα and Its Verification by NMR Anisotropy Experiments. Macromolecules 2006. [DOI: 10.1021/ma052439n] [Citation(s) in RCA: 68] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Raiker Witter
- Institute of Biological Interfaces, Forschungszentrum Karlsruhe, POB 3640, 76021 Karlsruhe, Germany; Institute of Optics and Quantum Electronics, Friedrich-Schiller-Universität Jena, Max-Wien-Platz 1, Jena 07743, Germany, and Forestry and Forest Products Research Institute, Matusnosato 1, Tsukuba, Ibaraki 305-8687, Japan; and Institute of Organic Chemistry, University of Karlsruhe, Fritz-Haber-Weg 6, 76131 Karlsruhe, Germany
| | - Ulrich Sternberg
- Institute of Biological Interfaces, Forschungszentrum Karlsruhe, POB 3640, 76021 Karlsruhe, Germany; Institute of Optics and Quantum Electronics, Friedrich-Schiller-Universität Jena, Max-Wien-Platz 1, Jena 07743, Germany, and Forestry and Forest Products Research Institute, Matusnosato 1, Tsukuba, Ibaraki 305-8687, Japan; and Institute of Organic Chemistry, University of Karlsruhe, Fritz-Haber-Weg 6, 76131 Karlsruhe, Germany
| | - Stephanie Hesse
- Institute of Biological Interfaces, Forschungszentrum Karlsruhe, POB 3640, 76021 Karlsruhe, Germany; Institute of Optics and Quantum Electronics, Friedrich-Schiller-Universität Jena, Max-Wien-Platz 1, Jena 07743, Germany, and Forestry and Forest Products Research Institute, Matusnosato 1, Tsukuba, Ibaraki 305-8687, Japan; and Institute of Organic Chemistry, University of Karlsruhe, Fritz-Haber-Weg 6, 76131 Karlsruhe, Germany
| | - Tetsuo Kondo
- Institute of Biological Interfaces, Forschungszentrum Karlsruhe, POB 3640, 76021 Karlsruhe, Germany; Institute of Optics and Quantum Electronics, Friedrich-Schiller-Universität Jena, Max-Wien-Platz 1, Jena 07743, Germany, and Forestry and Forest Products Research Institute, Matusnosato 1, Tsukuba, Ibaraki 305-8687, Japan; and Institute of Organic Chemistry, University of Karlsruhe, Fritz-Haber-Weg 6, 76131 Karlsruhe, Germany
| | - Frank-Th. Koch
- Institute of Biological Interfaces, Forschungszentrum Karlsruhe, POB 3640, 76021 Karlsruhe, Germany; Institute of Optics and Quantum Electronics, Friedrich-Schiller-Universität Jena, Max-Wien-Platz 1, Jena 07743, Germany, and Forestry and Forest Products Research Institute, Matusnosato 1, Tsukuba, Ibaraki 305-8687, Japan; and Institute of Organic Chemistry, University of Karlsruhe, Fritz-Haber-Weg 6, 76131 Karlsruhe, Germany
| | - Anne S. Ulrich
- Institute of Biological Interfaces, Forschungszentrum Karlsruhe, POB 3640, 76021 Karlsruhe, Germany; Institute of Optics and Quantum Electronics, Friedrich-Schiller-Universität Jena, Max-Wien-Platz 1, Jena 07743, Germany, and Forestry and Forest Products Research Institute, Matusnosato 1, Tsukuba, Ibaraki 305-8687, Japan; and Institute of Organic Chemistry, University of Karlsruhe, Fritz-Haber-Weg 6, 76131 Karlsruhe, Germany
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