Structural and Mechanical Properties of Silk from Different Instars of Bombyx mori.

Abstract:

:Silkworm silk has excellent mechanical properties, biocompatibility, and promising applications in the biomedical sector. Silkworms spin silk at the beginning and end of each of their five instar stages, as well as spinning mature silk after the fifth instar. We evaluated the mechanical properties and structure of 10 kinds of silk fibers from different stages. A tensile test showed that instar beginning silk, instar end silk, and mature silk possess distinct properties. Attenuated total reflectance Fourier-transform infrared spectroscopy and X-ray diffraction results showed that the excellent mechanical properties of instar end silk are attributed to higher β-sheet content and suitable crystallinity. Liquid chromatography-tandem mass spectrometry showed that P25 protein content in IV-E silk is 2.9× higher than that of cocoon silk. This study can offer guidelines for further biomimetic investigations into the design and manufacture of artificial silk protein fibers with novel function.

journal_name

Biomacromolecules

journal_title

Biomacromolecules

authors

Peng Z,Yang X,Liu C,Dong Z,Wang F,Wang X,Hu W,Zhang X,Zhao P,Xia Q

doi

10.1021/acs.biomac.8b01576

subject

Has Abstract

pub_date

2019-03-11 00:00:00

pages

1203-1216

issue

3

eissn

1525-7797

issn

1526-4602

journal_volume

20

pub_type

杂志文章
  • Ultrafast SET-LRP with Peptoid Cytostatic Drugs as Monofunctional and Bifunctional Initiators.

    abstract::To continue expanding the use of Single Electron Transfer-Living Radical Polymerization (SET-LRP) in applications at the interface between macromolecular science, biomacromolecules, biology and medicine, it is essential to develop novel initiators that do not compromise the structural stability of synthesized polymers...

    journal_title:Biomacromolecules

    pub_type: 杂志文章

    doi:10.1021/acs.biomac.7b00722

    authors: Lligadas G,Enayati M,Grama S,Smail R,Sherman SE,Percec V

    更新日期:2017-08-14 00:00:00

  • Intracellular trafficking and subcellular distribution of a large array of HPMA copolymers.

    abstract::The basic physicochemical properties that determine the distribution and fate of synthetic macromolecules in living cells were characterized using fluorescently labeled HPMA (N-(2-hydroxypropyl)methacrylamide) copolymers. Twelve different classes of water-soluble copolymers were created by incorporating eight differen...

    journal_title:Biomacromolecules

    pub_type: 杂志文章

    doi:10.1021/bm801514x

    authors: Callahan J,Kopečkov P,Kopeček J

    更新日期:2009-07-13 00:00:00

  • Metal Ion Mediated Cellulose Nanofibrils Transient Network in Covalently Cross-linked Hydrogels: Mechanistic Insight into Morphology and Dynamics.

    abstract::Utilization of reversible interactions as sacrificial bonds in biopolymers is critical for the integral synthesis of mechanically superior biological materials. In this work, cellulose nanofibrils (CNFs) reinforced covalent polyacrylamide (PAAm) composite hydrogels are immersed into multivalent cation (Ca2+, Zn2+, Al3...

    journal_title:Biomacromolecules

    pub_type: 杂志文章

    doi:10.1021/acs.biomac.6b01915

    authors: Yang J,Xu F,Han CR

    更新日期:2017-03-13 00:00:00

  • Liquid-State NMR Analysis of Nanocelluloses.

    abstract::Recent developments in ionic liquid electrolytes for cellulose or biomass dissolution has also allowed for high-resolution 1H and 13C NMR on very high molecular weight cellulose. This permits the development of advanced liquid-state quantitative NMR methods for characterization of unsubstituted and low degree of subst...

    journal_title:Biomacromolecules

    pub_type: 杂志文章

    doi:10.1021/acs.biomac.8b00295

    authors: King AWT,Mäkelä V,Kedzior SA,Laaksonen T,Partl GJ,Heikkinen S,Koskela H,Heikkinen HA,Holding AJ,Cranston ED,Kilpeläinen I

    更新日期:2018-07-09 00:00:00

  • Click-Chemistry Approach toward Antibacterial and Degradable Hybrid Hydrogels Based on Octa-Betaine Ester Polyhedral Oligomeric Silsesquioxane.

    abstract::An efficient process for the synthesis of degradable hydrogels containing octa-betaine ester polyhedral oligomeric silsesquioxane (POSS) through efficient thiol-ene and Menschutkin click reactions was developed. The hydrogels exhibited a yield strength of 0.36 MPa and a compressive modulus of 4.38 MPa and displayed ex...

    journal_title:Biomacromolecules

    pub_type: 杂志文章

    doi:10.1021/acs.biomac.0c00530

    authors: Han J,Chen Q,Shen Y,Liu Z,Hao X,Zhong M,Zhao Z,Bockstaller MR

    更新日期:2020-09-14 00:00:00

  • Determination of the glycosaminoglycan and collagen contents in tissue samples by high-resolution 1H NMR spectroscopy after DCl-induced hydrolysis.

    abstract::The determination of the collagen and glycosaminoglycan (GAG) contents of native and particularly bioengineered tissues is of considerable interest because the collagen-to-GAG ratio determines the water content of the tissue, which is crucial regarding its mechanical properties. (1)H NMR spectroscopy subsequent to the...

    journal_title:Biomacromolecules

    pub_type: 杂志文章

    doi:10.1021/bm300485j

    authors: Riemer T,Nimptsch A,Nimptsch K,Schiller J

    更新日期:2012-07-09 00:00:00

  • Chromatographic and enzymatic strategies to reveal differences between amidated pectins on a molecular level.

    abstract::The intermolecular distributions of amide groups within two commercial LMA pectins was studied after removal of the methyl esters followed by fractionation of the different populations by anion exchange chromatography. The populations obtained had almost equal degrees of amidation while the values of the degree of blo...

    journal_title:Biomacromolecules

    pub_type: 杂志文章

    doi:10.1021/bm050960j

    authors: Guillotin SE,Mey N,Ananta E,Boulenguer P,Schols HA,Voragen AG

    更新日期:2006-06-01 00:00:00

  • Sulfated Dendritic Polyglycerol Is a Potent Complement Inhibitor.

    abstract::The complement system is a powerful mechanism of the innate immune defense system. Dysregulation may contribute to several diseases. Heparin is a known regulator of the complement system, but its application is limited due to its anticoagulative activity. A promising alternative is the synthetic analogue dendritic pol...

    journal_title:Biomacromolecules

    pub_type: 杂志文章

    doi:10.1021/acs.biomac.9b00889

    authors: Silberreis K,Niesler N,Rades N,Haag R,Dernedde J

    更新日期:2019-10-14 00:00:00

  • Polyelectrolyte complexes stabilize and controllably release vascular endothelial growth factor.

    abstract::Angiogenesis has long been a desired therapeutic approach to improve clinical outcomes of conditions typified by ischemia. Vascular endothelial growth factor (VEGF) has demonstrated the ability to generate new blood vessels in vivo, but trials using intravenous delivery have not yet produced clinical success. Localize...

    journal_title:Biomacromolecules

    pub_type: 杂志文章

    doi:10.1021/bm061211k

    authors: Huang M,Vitharana SN,Peek LJ,Coop T,Berkland C

    更新日期:2007-05-01 00:00:00

  • Polymer-Upconverting Nanoparticle Hybrid Micelles for Enhanced Synergistic Chemo-Photodynamic Therapy: Effects of Emission-Absorption Spectral Match.

    abstract::Chemo-photodynamic combined therapy is promising in cancer treatment, although low tissue penetration of visible light for activating photosensitizers (e.g., chlorin e6, Ce6) limited its broad applications. Combination of upcoverting nanoparticles (UCNPs) with the photosensitizers endows us with the possibility to uti...

    journal_title:Biomacromolecules

    pub_type: 杂志文章

    doi:10.1021/acs.biomac.9b01211

    authors: Chen Y,Ren J,Tian D,Li Y,Jiang H,Zhu J

    更新日期:2019-10-14 00:00:00

  • Enzymatic synthesis of inulin-containing hydrogels.

    abstract::The Bacillus subtilis protease Proleather FG-F catalyzed the transesterification of inulin with vinyl acrylate (VA) in dimethylformamide (DMF). The reaction conversion for different VA concentrations was greater than 57% after 96 h at 50 degrees C. The degree of substitution (DS, defined as the amount of acrylate grou...

    journal_title:Biomacromolecules

    pub_type: 杂志文章

    doi:10.1021/bm010150h

    authors: Ferreira L,Carvalho R,Gil MH,Dordick JS

    更新日期:2002-03-01 00:00:00

  • Understanding the mechanism of action of poly(amidoamine)s as endosomolytic polymers: correlation of physicochemical and biological properties.

    abstract::Bioresponsive poly(amidoamine)s (PAA)s are currently under development as endosomolytic polymers for intracellular delivery of proteins and genes. Here for the first time, small-angle neutron scattering (SANS) is used to systematically investigate the pH-dependent conformational change of an endosomolytic polymer, the...

    journal_title:Biomacromolecules

    pub_type: 杂志文章

    doi:10.1021/bm049936g

    authors: Griffiths PC,Paul A,Khayat Z,Wan KW,King SM,Grillo I,Schweins R,Ferruti P,Franchini J,Duncan R

    更新日期:2004-07-01 00:00:00

  • Monolithic silica rods grafted with thermoresponsive anionic polymer brushes for high-speed separation of basic biomolecules and peptides.

    abstract::Thermoresponsive anionic copolymer brushes, poly(N-isopropylacrylamide-co-acrylic acid-co-tert-butylacrylamide) [P(IPAAm-co-AAc-co-tBAAm)], were grafted onto a monolithic silica rod column through surface-initiated atom-transfer radical polymerization (ATRP) to prepare an effective thermoresponsive anionic chromatogra...

    journal_title:Biomacromolecules

    pub_type: 杂志文章

    doi:10.1021/bm401779r

    authors: Nagase K,Kobayashi J,Kikuchi A,Akiyama Y,Kanazawa H,Okano T

    更新日期:2014-04-14 00:00:00

  • Differentiation of osteoblasts on pectin-coated titanium.

    abstract::The gold standard for implant metals is titanium, and coatings such as collagen-I, RGD-peptide, chondroitin sulfate, and calcium phosphate have been used to modify its biocompatibility. We investigated how titanium coated with pectins, adaptable bioactive plant polysaccharides with anti-inflammatory effects, supports ...

    journal_title:Biomacromolecules

    pub_type: 杂志文章

    doi:10.1021/bm800356b

    authors: Kokkonen H,Cassinelli C,Verhoef R,Morra M,Schols HA,Tuukkanen J

    更新日期:2008-09-01 00:00:00

  • Tunable protein release from acetalated dextran microparticles: a platform for delivery of protein therapeutics to the heart post-MI.

    abstract::The leading cause of death in the United States is cardiovascular disease. The majority of these cases result from heart failure post-myocardial infarction (MI). We present data providing evidence for use of acetalated dextran (AcDex) microparticles as a delivery vehicle for therapeutics to the heart post-MI. We harne...

    journal_title:Biomacromolecules

    pub_type: 杂志文章

    doi:10.1021/bm401050j

    authors: Suarez S,Grover GN,Braden RL,Christman KL,Almutairi A

    更新日期:2013-11-11 00:00:00

  • Preserving catalytic activity and enhancing biochemical stability of the therapeutic enzyme asparaginase by biocompatible multilayered polyelectrolyte microcapsules.

    abstract::The present study focuses on the formation of microcapsules containing catalytically active L-asparaginase (L-ASNase), a protein drug of high value in antileukemic therapy. We make use of the layer-by-layer (LbL) technique to coat protein-loaded calcium carbonate (CaCO3) particles with two or three poly dextran/poly-L...

    journal_title:Biomacromolecules

    pub_type: 杂志文章

    doi:10.1021/bm401341k

    authors: Karamitros CS,Yashchenok AM,Möhwald H,Skirtach AG,Konrad M

    更新日期:2013-12-09 00:00:00

  • Modular Polymer Antigens To Optimize Immunity.

    abstract::Subunit vaccines can have excellent safety profiles, but their ability to give rise to robust immune responses is often compromised. For glycan-based vaccines, insufficient understanding of B and T cell epitope combinations that yield optimal immune activation hinders optimization. To determine which antigen features ...

    journal_title:Biomacromolecules

    pub_type: 杂志文章

    doi:10.1021/acs.biomac.9b01049

    authors: Bennett NR,Jarvis CM,Alam MM,Zwick DB,Olson JM,Nguyen HV,Johnson JA,Cook ME,Kiessling LL

    更新日期:2019-12-09 00:00:00

  • Dimethyl Sulfoxide-Free Cryopreservation of Chondrocytes Based on Zwitterionic Molecule and Polymers.

    abstract::Cartilage tissue engineering highly relies on the ability to store and transport chondrocytes in order to be clinically successful. Cryopreservation is a most reliable technology for chondrocyte storage, but it suffers from the intrinsic toxicity of current state-of-the-art cryoprotectant, dimethyl sulfoxide (DMSO). I...

    journal_title:Biomacromolecules

    pub_type: 杂志文章

    doi:10.1021/acs.biomac.9b01024

    authors: Liu M,Zhang X,Guo H,Zhu Y,Wen C,Sui X,Yang J,Zhang L

    更新日期:2019-10-14 00:00:00

  • Development of electrically conductive oligo(polyethylene glycol) fumarate-polypyrrole hydrogels for nerve regeneration.

    abstract::Electrically conductive hydrogel composites consisting of oligo(polyethylene glycol) fumarate (OPF) and polypyrrole (PPy) were developed for applications in nerve regeneration. OPF-PPy scaffolds were synthesized using three different anions: naphthalene-2-sulfonic acid sodium salt (NSA), dodecylbenzenesulfonic acid so...

    journal_title:Biomacromolecules

    pub_type: 杂志文章

    doi:10.1021/bm100526a

    authors: Runge MB,Dadsetan M,Baltrusaitis J,Ruesink T,Lu L,Windebank AJ,Yaszemski MJ

    更新日期:2010-11-08 00:00:00

  • Bioinspired pH- and Temperature-Responsive Injectable Adhesive Hydrogels with Polyplexes Promotes Skin Wound Healing.

    abstract::Despite great potential, the delivery of genetic materials into cells or tissues of interest remains challenging owing to their susceptibility to nuclease degradation, lack of permeability to the cell membrane, and short in vivo half-life, which severely restrict their widespread use in therapeutics. To surmount these...

    journal_title:Biomacromolecules

    pub_type: 杂志文章

    doi:10.1021/acs.biomac.8b00819

    authors: Le TMD,Duong HTT,Thambi T,Giang Phan VH,Jeong JH,Lee DS

    更新日期:2018-08-13 00:00:00

  • ATRP synthesis of amphiphilic random, gradient, and block copolymers of 2-(dimethylamino)ethyl methacrylate and n-butyl methacrylate in aqueous media.

    abstract::Amphiphilic random, gradient, and block copolymers of 2-(dimethylamino)ethyl methacrylate (DMAEMA) and n-butyl methacrylate (BMA) were synthesized by atom transfer radical polymerization (ATRP) in water/2-propanol mixtures using a methoxy-poly(ethylene glycol) (MPEG) (M(n) = 2000) macroinitiator. Kinetic studies indic...

    journal_title:Biomacromolecules

    pub_type: 杂志文章

    doi:10.1021/bm034126a

    authors: Lee SB,Russell AJ,Matyjaszewski K

    更新日期:2003-09-01 00:00:00

  • Production of bioactive, post-translationally modified, heterotrimeric, human recombinant type-I collagen in transgenic tobacco.

    abstract::Collagen's biocompatibility, biodegradability and low immunogenicity render it advantageous for extensive application in pharmaceutical or biotechnological disciplines. However, typical collagen extraction from animal or cadaver sources harbors risks including allergenicity and potential sample contamination with path...

    journal_title:Biomacromolecules

    pub_type: 杂志文章

    doi:10.1021/bm900571b

    authors: Stein H,Wilensky M,Tsafrir Y,Rosenthal M,Amir R,Avraham T,Ofir K,Dgany O,Yayon A,Shoseyov O

    更新日期:2009-09-14 00:00:00

  • Poly(ethylene glycol)-poly(ester-carbonate) block copolymers carrying PEG-peptidyl-doxorubicin pendant side chains: synthesis and evaluation as anticancer conjugates.

    abstract::Water soluble polymer anticancer conjugates can improve the pharmacokinetics of covalently bound drugs by limiting cellular uptake to the endocytic route, thus prolonging plasma circulation time and consequently facilitating tumor targeting by the enhanced permeability and retention (EPR) effect. Many of the first gen...

    journal_title:Biomacromolecules

    pub_type: 杂志文章

    doi:10.1021/bm049381p

    authors: Andersson L,Davies J,Duncan R,Ferruti P,Ford J,Kneller S,Mendichi R,Pasut G,Schiavon O,Summerford C,Tirk A,Veronese FM,Vincenzi V,Wu G

    更新日期:2005-03-01 00:00:00

  • Inclusion of 5-[4-(1-dodecanoylpyridinium)]-10,15,20-triphenylporphine in supramolecular aggregates of cationic amphiphilic cyclodextrins: physicochemical characterization of the complexes and strengthening of the antimicrobial photosensitizing activity.

    abstract::Recent findings suggest that visible light-promoted photooxidative processes mediated by sensitizers of appropriate chemical structure could represent a useful tool for properly addressing the problem of the increasing occurrence of infectious diseases caused by multiantibiotic-resistant microbial pathogens. The monoc...

    journal_title:Biomacromolecules

    pub_type: 杂志文章

    doi:10.1021/bm900533r

    authors: Ferro S,Jori G,Sortino S,Stancanelli R,Nikolov P,Tognon G,Ricchelli F,Mazzaglia A

    更新日期:2009-09-14 00:00:00

  • Optimization of chitin extraction from shrimp shells.

    abstract::The aim of this paper is to define optimal conditions for the extraction of chitin from shrimp shells. The kinetics of both demineralization and deproteinization with, in the latter case, the role of temperature are studied. The characterization of the residual calcium and protein contents, the molecular weights, and ...

    journal_title:Biomacromolecules

    pub_type: 杂志文章

    doi:10.1021/bm025602k

    authors: Percot A,Viton C,Domard A

    更新日期:2003-01-01 00:00:00

  • Aminated linear and star-shape poly(glycerol methacrylate)s: synthesis and self-assembling properties.

    abstract::Over the past 10 years, polyglycerols and their structurally related analogs have received considerable attention in the biomedical field. Poly(glycidyl methacrylate) (PGMA) is a versatile polymer because its pendant epoxide groups can be opened with different functional groups to generate poly(glycerol methacrylate)s...

    journal_title:Biomacromolecules

    pub_type: 杂志文章

    doi:10.1021/bm901241k

    authors: Gao H,Elsabahy M,Giger EV,Li D,Prud'homme RE,Leroux JC

    更新日期:2010-04-12 00:00:00

  • Mutational analysis and allosteric effects in the HIV-1 capsid protein carboxyl-terminal dimerization domain.

    abstract::The carboxyl-terminal domain (CTD, residues 146-231) of the HIV-1 capsid (CA) protein plays an important role in the CA-CA dimerization and viral assembly of the human immunodeficiency virus type 1. Disrupting the native conformation of the CA is essential for blocking viral capsid formation and viral replication. Thu...

    journal_title:Biomacromolecules

    pub_type: 杂志文章

    doi:10.1021/bm801151r

    authors: Yu X,Wang Q,Yang JC,Buch I,Tsai CJ,Ma B,Cheng SZ,Nussinov R,Zheng J

    更新日期:2009-02-09 00:00:00

  • Rheological study of genipin cross-linked chitosan hydrogels.

    abstract::This paper reports the rheological behavior of chitosan solutions that have been cross-linked with different amounts of genipin, at body temperature and physiological pH. The effect of the cross-linker loading on the rheological properties of hydrogels has been evaluated. The oscillatory time sweep method was used to ...

    journal_title:Biomacromolecules

    pub_type: 杂志文章

    doi:10.1021/bm700762w

    authors: Moura MJ,Figueiredo MM,Gil MH

    更新日期:2007-12-01 00:00:00

  • Temperature-induced ultradense PEG polyelectrolyte surface grafting provides effective long-term bioresistance against mammalian cells, serum, and whole blood.

    abstract::We report a facile method of generating ultradense poly(l-lysine)-graft-poly(ethylene glycol) (PLL-g-PEG) surface by using high temperature alone, which in turn provides dramatic improvement in resisting nonspecific bioadsorption. X-ray photoelectron spectroscopy (XPS) revealed that the surface graft density increased...

    journal_title:Biomacromolecules

    pub_type: 杂志文章

    doi:10.1021/bm301125g

    authors: Ogaki R,Zoffmann Andersen O,Jensen GV,Kolind K,Kraft DC,Pedersen JS,Foss M

    更新日期:2012-11-12 00:00:00

  • Preparation and evaluation of trimethylsilylated chitin as a versatile precursor for facile chemical modifications.

    abstract::Trimethylsilylation of chitin was studied in detail to establish a reliable method, and the properties of the resulting product were elucidated. Chitin was successfully trimethylsilylated with a mixture of hexamethyldisilazane and trimethylsilyl chloride in pyridine. Compared to alpha-chitin, beta-chitin was much more...

    journal_title:Biomacromolecules

    pub_type: 杂志文章

    doi:10.1021/bm049295p

    authors: Kurita K,Sugita K,Kodaira N,Hirakawa M,Yang J

    更新日期:2005-05-01 00:00:00