1H NMR investigation of thermally triggered insulin release from poly(N-isopropylacrylamide) microgels.

Abstract:

:We describe investigations of insulin release from thermoresponsive microgels using variable temperature (1)H NMR. Microgel particles composed of poly(N-isopropylacrylamide) were loaded with the peptide via a swelling technique, and this method was compared to simple equilibrium partitioning. Variable temperature (1)H NMR studies suggest that the swelling loading method results in enhanced entrapment of the peptide versus equilibrium partitioning. A centrifugation-loading assay supports this finding. Pseudo-temperature jump (1)H NMR measurements suggest that the insulin release rate is partially decoupled from microgel collapse. These types of direct release investigations could prove to be useful methods in the future design of controlled macromolecule drug delivery devices.

journal_name

Biomacromolecules

journal_title

Biomacromolecules

authors

Nolan CM,Gelbaum LT,Lyon LA

doi

10.1021/bm060718s

subject

Has Abstract

pub_date

2006-10-01 00:00:00

pages

2918-22

issue

10

eissn

1525-7797

issn

1526-4602

journal_volume

7

pub_type

杂志文章
  • Elastin-like Polypeptide (ELP) Charge Influences Self-Assembly of ELP-mCherry Fusion Proteins.

    abstract::Self-assembly of protein-polymer bioconjugates presents an elegant strategy for controlling nanostructure and orientation of globular proteins in functional materials. Recent work has shown that genetic fusion of globular protein mCherry to an elastin-like polypeptide (ELP) yields similar self-assembly behavior to the...

    journal_title:Biomacromolecules

    pub_type: 杂志文章

    doi:10.1021/acs.biomac.8b00147

    authors: Mills CE,Michaud Z,Olsen BD

    更新日期:2018-07-09 00:00:00

  • Structural differences between the lignin-carbohydrate complexes present in wood and in chemical pulps.

    abstract::Lignin-carbohydrate complexes (LCCs) were prepared in quantitative yield from spruce wood and from the corresponding kraft and oxygen-delignified pulps and were separated into different fractions on the basis of their carbohydrate composition. To obtain an understanding of the differences in lignin structure and react...

    journal_title:Biomacromolecules

    pub_type: 杂志文章

    doi:10.1021/bm058014q

    authors: Lawoko M,Henriksson G,Gellerstedt G

    更新日期:2005-11-01 00:00:00

  • Organ Distribution and Bone Tropism of Cellulose Nanocrystals in Living Mice.

    abstract::Their physicochemical properties and relatively low cost make cellulose nanocrystals (CNCs) a potential candidate for future large-scale production in many fields including nanomedicine. Prior to a sustained and responsible development as theranostic agents, robust and reliable data concerning their safety, biocompati...

    journal_title:Biomacromolecules

    pub_type: 杂志文章

    doi:10.1021/acs.biomac.5b00805

    authors: Colombo L,Zoia L,Violatto MB,Previdi S,Talamini L,Sitia L,Nicotra F,Orlandi M,Salmona M,Recordati C,Bigini P,La Ferla B

    更新日期:2015-09-14 00:00:00

  • 3D-Printing of Structure-Controlled Antigen Nanoparticles for Vaccine Delivery.

    abstract::Targeted delivery of antigens to immune cells using micro/nanocarriers may serve as a therapeutic application for vaccination. However, synthetic carriers have potential drawbacks including cytotoxicity, low encapsulation efficiency of antigen, and lack of a morphological design, which limit the translation of the del...

    journal_title:Biomacromolecules

    pub_type: 杂志文章

    doi:10.1021/acs.biomac.9b01775

    authors: Nishiguchi A,Shima F,Singh S,Akashi M,Moeller M

    更新日期:2020-06-08 00:00:00

  • Multiplexing natural orientation: oppositely directed self-assembling peptides.

    abstract::We explore here the possibility that polypeptide chains with directional multiplicity might provide for the control of peptide self-assembly processes. We tested this new possibility using an oppositely directed peptide (ODP) supramolecular system. The ODP could make it possible to form a βαβ motif with antiparallel β...

    journal_title:Biomacromolecules

    pub_type: 杂志文章

    doi:10.1021/bm500313f

    authors: Jeong WJ,Han S,Park H,Jin KS,Lim YB

    更新日期:2014-06-09 00:00:00

  • Cationic dendron-bearing lipids: investigating structure-activity relationships for small interfering RNA delivery.

    abstract::A new family of cationic dendron-bearing lipids (CDLs) with poly(amidoamine) dendrons of first to third generation (named as A1, A2, and A3, respectively) was synthesized through a synthesis approach that permits facile variation of chemical structures. All CDLs could effectively bind small interfering RNA (siRNA) to ...

    journal_title:Biomacromolecules

    pub_type: 杂志文章

    doi:10.1021/bm4011563

    authors: Zhang Y,Chen J,Xiao C,Li M,Tian H,Chen X

    更新日期:2013-12-09 00:00:00

  • Engineering biomaterial-associated complement activation to improve vaccine efficacy.

    abstract::The complement system plays an important role in innate and adaptive immunity, which suggests that complement activation could be exploited as a potential strategy for vaccine adjuvants. Here we explored the potential of chitosan-based microparticles (CS-NH2 MPs) as a vaccine adjuvant with an active surface for comple...

    journal_title:Biomacromolecules

    pub_type: 杂志文章

    doi:10.1021/bm400930k

    authors: Liu Y,Yin Y,Wang L,Zhang W,Chen X,Yang X,Xu J,Ma G

    更新日期:2013-09-09 00:00:00

  • Influence of Molecular Structure on the In Vivo Performance of Flexible Rod Polyrotaxanes.

    abstract::Polyrotaxanes, a family of rod-shaped nanomaterials comprised of noncovalent polymer/macrocycle assemblies, are being used in a growing number of materials and biomedical applications. Their physiochemical properties can vary widely as a function of composition, potentially leading to different in vivo performance out...

    journal_title:Biomacromolecules

    pub_type: 杂志文章

    doi:10.1021/acs.biomac.6b00508

    authors: Collins CJ,Mondjinou Y,Loren B,Torregrosa-Allen S,Simmons CJ,Elzey BD,Ayat N,Lu ZR,Thompson D

    更新日期:2016-09-12 00:00:00

  • Comblike complexes of bacterial poly(gamma,d-glutamic acid) and cationic surfactants.

    abstract::The ability of microbally produced poly(gamma,d-glutamic acid) to form stable polyelectrolyte-opposite charged surfactant complexes was investigated. A sonicated sample of polyacid with a molecular weight about 10(5) Da and a content of d enantiomer higher than 90% was used in this study. Nearly stoichiometric complex...

    journal_title:Biomacromolecules

    pub_type: 杂志文章

    doi:10.1021/bm034267c

    authors: Pérez-Camero G,García-Alvarez M,Martínez De Ilarduya A,Fernández C,Campos L,Muñoz-Guerra S

    更新日期:2004-01-01 00:00:00

  • Chitosan microneedle patches for sustained transdermal delivery of macromolecules.

    abstract::This paper introduces a chitosan microneedle patch for efficient and sustained transdermal delivery of hydrophilic macromolecules. Chitosan microneedles have sufficient mechanical strength to be inserted in vitro into porcine skin at approximately 250 μm in depth and in vivo into rat skin at approximately 200 μm in de...

    journal_title:Biomacromolecules

    pub_type: 杂志文章

    doi:10.1021/bm301293d

    authors: Chen MC,Ling MH,Lai KY,Pramudityo E

    更新日期:2012-12-10 00:00:00

  • Growth factor delivery approaches in hydrogels.

    abstract::The controlled delivery of growth factors is a very challenging task because many different issues have to be addressed to develop the best suited system. A wide range of approaches have been employed for the controlled delivery of growth factors by hydrogels. Direct loading, electrostatic interaction, covalent bindin...

    journal_title:Biomacromolecules

    pub_type: 杂志文章,评审

    doi:10.1021/bm801103c

    authors: Silva AK,Richard C,Bessodes M,Scherman D,Merten OW

    更新日期:2009-01-12 00:00:00

  • Coating of soluble and immobilized enzymes with ionic polymers: full stabilization of the quaternary structure of multimeric enzymes.

    abstract::This paper shows a simple and effective way to avoid the dissociation of multimeric enzymes by coating their surface with a large cationic polymer (e.g., polyethylenimine (PEI)) by ionic exchange. As model enzymes, glutamate dehydrogenase (GDH) from Thermus thermophilus and formate dehydrogenase (FDH) from Pseudomonas...

    journal_title:Biomacromolecules

    pub_type: 杂志文章

    doi:10.1021/bm801162e

    authors: Bolivar JM,Rocha-Martin J,Mateo C,Cava F,Berenguer J,Fernandez-Lafuente R,Guisan JM

    更新日期:2009-04-13 00:00:00

  • Tuning chemical and physical cross-links in silk electrogels for morphological analysis and mechanical reinforcement.

    abstract::Electrochemically controlled, reversible assembly of biopolymers into hydrogel structures is a promising technique for on-demand cell or drug encapsulation and release systems. An electrochemically sol-gel transition has been demonstrated in regenerated Bombyx mori silk fibroin, offering a controllable way to generate...

    journal_title:Biomacromolecules

    pub_type: 杂志文章

    doi:10.1021/bm4004892

    authors: Lin Y,Xia X,Shang K,Elia R,Huang W,Cebe P,Leisk G,Omenetto F,Kaplan DL

    更新日期:2013-08-12 00:00:00

  • Synthesis, characterization, and biocompatibility of biodegradable hyperbranched polyglycerols from acid-cleavable ketal group functionalized initiators.

    abstract::Herein we report the synthesis of biodegradable hyperbranched polyglycerols (BHPGs) having acid-cleavable core structure by anionic ring-opening multibranching polymerization (ROMBP) of glycidol using initiators bearing dimethyl and cyclohexyl ketal groups. Five different multifunctional initiators carrying one to fou...

    journal_title:Biomacromolecules

    pub_type: 杂志文章

    doi:10.1021/bm300959h

    authors: Shenoi RA,Lai BF,Kizhakkedathu JN

    更新日期:2012-10-08 00:00:00

  • Effective detection and separation method for G-quadruplex DNA based on its specific precipitation with Mg(2+).

    abstract::G-quadruplex is a type of DNA secondary structure formed by specific guanine-rich sequences. Because of their enrichment in functional genomic regions and their biological significance, G-quadruplexes are recognized as significant drug targets for cancer and other diseases. Here, we tested the precipitation efficiency...

    journal_title:Biomacromolecules

    pub_type: 杂志文章

    doi:10.1021/bm100862k

    authors: Lin J,Yan YY,Ou TM,Tan JH,Huang SL,Li D,Huang ZS,Gu LQ

    更新日期:2010-12-13 00:00:00

  • Photoresponsive Micelle-Incorporated Doxorubicin for Chemo-Photodynamic Therapy to Achieve Synergistic Antitumor Effects.

    abstract::A combination of chemo-photodynamic therapy has been manifested as a promising strategy for efficient cancer treatment due to the enhanced therapeutic efficacy. Here, we designed doxorubicin (DOX)-loaded photoresponsive micelles (DPRMs) based on a combination of chlorin e6 (Ce6) and lipoic acid (LA) conjugated methoxy...

    journal_title:Biomacromolecules

    pub_type: 杂志文章

    doi:10.1021/acs.biomac.8b00607

    authors: Kim DH,Hwang HS,Na K

    更新日期:2018-08-13 00:00:00

  • Quantitatively Fine-Tuning the Physicochemical and Biological Properties of Peptidic Polymers through Monodisperse PEGylation.

    abstract::In biomedicine, PEGylation is one of the most successful strategies to modify the physicochemical and biological properties of peptides, proteins, and other biomacromolecules. Because of the polydisperse nature of regular PEGs and limited PEGylation strategies, it is challenging to quantitatively fine-tune and accurat...

    journal_title:Biomacromolecules

    pub_type: 杂志文章

    doi:10.1021/acs.biomac.9b01425

    authors: Wang X,Li Y,Wu T,Yang Z,Zheng X,Chen S,Zhou X,Jiang ZX

    更新日期:2020-02-10 00:00:00

  • Sorption efficiency of chitosan nanofibers toward metal ions at low concentrations.

    abstract::Chitosan fibers showing narrow diameter distribution with a mean of 42 nm were produced by electrospinning and utilized for the sorption of Fe(III), Cu(II), Ag(I), and Cd(II) ions from aqueous solutions. The ion concentrations in the supernatant solutions were determined using inductively coupled plasma-mass spectrome...

    journal_title:Biomacromolecules

    pub_type: 杂志文章

    doi:10.1021/bm100755x

    authors: Horzum N,Boyaci E,Eroğlu AE,Shahwan T,Demir MM

    更新日期:2010-12-13 00:00:00

  • In vitro model assemblies to study the impact of lignin-carbohydrate interactions on the enzymatic conversion of xylan.

    abstract::Endo-beta-1,4-xylanases (EC 3.2.1.8) are the main enzymes involved in the hydrolysis of xylans, the most abundant hemicelluloses in plant biomass. However, the development of efficient endoxylanases for use in biorefinery processes is currently hampered by insufficient knowledge regarding the impact of the cell wall n...

    journal_title:Biomacromolecules

    pub_type: 杂志文章

    doi:10.1021/bm9004518

    authors: Boukari I,Putaux JL,Cathala B,Barakat A,Saake B,Rémond C,O'Donohue M,Chabbert B

    更新日期:2009-09-14 00:00:00

  • Isolating a trimer intermediate in the self-assembly of E2 protein cage.

    abstract::Understanding the self-assembly mechanism of caged proteins provides clues to develop their potential applications in nanotechnology, such as a nanoscale drug delivery system. The E2 protein from Bacillus stearothermophilus , with a virus-like caged structure, has drawn much attention for its potential application as...

    journal_title:Biomacromolecules

    pub_type: 杂志文章

    doi:10.1021/bm201587q

    authors: Peng T,Lee H,Lim S

    更新日期:2012-03-12 00:00:00

  • Macromolecule-induced assembly of coiled-coils in alternating multiblock polymers.

    abstract::The bioconjugation of proteins and peptides with synthetic polymers is a promising method for tailoring the chemical, biological, and physical properties of both the polymeric and protein-based components. Here, we describe macromolecular assemblies of polyethylene glycol-coiled-coil alternating multiblock polymers gu...

    journal_title:Biomacromolecules

    pub_type: 杂志文章

    doi:10.1021/bm900474k

    authors: Sahin E,Kiick KL

    更新日期:2009-10-12 00:00:00

  • Synthesis and characterization of core-shell star copolymers for in vivo PET imaging applications.

    abstract::The synthesis of core-shell star copolymers via living free radical polymerization provides a convenient route to three-dimensional nanostructures having a poly(ethylene glycol) outer shell, a hydrophilic inner shell bearing reactive functional groups, and a central hydrophobic core. By starting with well-defined line...

    journal_title:Biomacromolecules

    pub_type: 杂志文章

    doi:10.1021/bm7014152

    authors: Fukukawa K,Rossin R,Hagooly A,Pressly ED,Hunt JN,Messmore BW,Wooley KL,Welch MJ,Hawker CJ

    更新日期:2008-04-01 00:00:00

  • Synthesis of Zwitterionic Polymers Containing a Tertiary Sulfonium Group for Protein Stabilization.

    abstract::The present study demonstrates the controlled synthesis and biological potential of poly( N-acryloyl-l-methionine methyl sulfonium salt)s (poly(A-Met(S+)-OH)s), which mimic dimethylsulfoniopropionate (DMSP), a compound produced by marine algae to protect their proteins. The novel sulfonium-containing zwitterionic poly...

    journal_title:Biomacromolecules

    pub_type: 杂志文章

    doi:10.1021/acs.biomac.8b01542

    authors: Imamura R,Mori H

    更新日期:2019-02-11 00:00:00

  • Biobased polymers: synthesis of graft copolymers and comb polymers using lactic acid macromonomer and properties of the product polymers.

    abstract::For developing broader application of biobased polymers, graft copolymers and comb polymers having poly(lactic acid) (PLA) side chains have been synthesized by using a macromonomer technique. PLA macromonomers (MMm) having a methacryloyl polymerizable group with different PLA chain length with an average length m = 4,...

    journal_title:Biomacromolecules

    pub_type: 杂志文章

    doi:10.1021/bm301212a

    authors: Ishimoto K,Arimoto M,Okuda T,Yamaguchi S,Aso Y,Ohara H,Kobayashi S,Ishii M,Morita K,Yamashita H,Yabuuchi N

    更新日期:2012-11-12 00:00:00

  • Biomimetic hydrogels with immobilized ephrinA1 for therapeutic angiogenesis.

    abstract::The formation of a microvasculature is regulated in large part by cell-cell interactions. Ephrins and their Eph receptors mediate cell adhesion, repulsion, and migration, all critical processes in angiogenesis. (1) Here we use a covalently immobilized ephrinA1, conjugated to poly(ethylene glycol), to induce vessel for...

    journal_title:Biomacromolecules

    pub_type: 杂志文章

    doi:10.1021/bm200492h

    authors: Saik JE,Gould DJ,Keswani AH,Dickinson ME,West JL

    更新日期:2011-07-11 00:00:00

  • Aggregation during coniferyl alcohol polymerization in pectin solution: a biomimetic approach of the first steps of lignification.

    abstract::Coniferyl alcohol was polymerized in pectin solution in order to mimic the lignification that is the final step of biosynthesis of plant cell wall. Dehydrogenated polymers (DHP = coniferyl alcohol polymers = synthetic lignin) interact with pectin to form hydrophobic clusters as monitored by pyrene fluorescence spectro...

    journal_title:Biomacromolecules

    pub_type: 杂志文章

    doi:10.1021/bm049390y

    authors: Lairez D,Cathala B,Monties B,Bedos-Belval F,Duran H,Gorrichon L

    更新日期:2005-03-01 00:00:00

  • Stereocomplex formation by enantiomeric poly(lactic acid) graft-type phospholipid polymers for tissue engineering.

    abstract::A porous scaffold as a cell-compatible material was designed and prepared using a phospholipid copolymer composed of 2-methacryloyloxyethyl phosphorylcholine (MPC), n-butyl methacrylate, and enantiomeric macromonomers, the poly(L-lactic acid) (PLLA) macromonomer, and poly(D-lactic acid) (PDLA) macromonomer. On the bas...

    journal_title:Biomacromolecules

    pub_type: 杂志文章

    doi:10.1021/bm025586r

    authors: Watanabe J,Eriguchi T,Ishihara K

    更新日期:2002-09-01 00:00:00

  • Production of extracellular glycogen by Pseudomonas fluorescens: spectroscopic evidence and conformational analysis by biomolecular recognition.

    abstract::Glycogen is mainly found as the principal storage form of glucose in cells. Many bacteria are able to synthesize large amounts of glycogen under unfavorable life conditions. By combining infrared spectroscopy, single molecule force spectroscopy (SMFS) and immuno-staining technique, we evidenced that planktonic P. flu...

    journal_title:Biomacromolecules

    pub_type: 杂志文章

    doi:10.1021/bm300497c

    authors: Quilès F,Polyakov P,Humbert F,Francius G

    更新日期:2012-07-09 00:00:00

  • Electrospinning Induced Orientation of Protein Fibrils.

    abstract::Amyloid-like fibrils are prepared from protein in the lab by controlled heat treatments, yet these must be further assembled to match the desirable mechanical and structural properties of biological fibers. Here, β-lactoglobulin fibrils were incorporated into poly(ethylene oxide) fibers of 40-180 nm diameter by electr...

    journal_title:Biomacromolecules

    pub_type: 杂志文章

    doi:10.1021/acs.biomac.0c00500

    authors: Chen D,Narayanan N,Federici E,Yang Z,Zuo X,Gao J,Fang F,Deng M,Campanella OH,Jones OG

    更新日期:2020-07-13 00:00:00

  • Esterase-Responsive Polypeptide Vesicles as Fast-Response and Sustained-Release Nanocompartments for Fibroblast-Exempt Drug Delivery.

    abstract::Enzyme-responsive polypeptide vesicles have attracted considerable attention for precision theranostics because of their biocompatibility, biodegradability, and unique secondary conformation transition triggered by the catalytic actions of enzymes. These promising potentials of polypeptide vesicles could be limited in...

    journal_title:Biomacromolecules

    pub_type: 杂志文章

    doi:10.1021/acs.biomac.0c01251

    authors: Duan W,Ji S,Guan Y,Mu X,Fang S,Lu Y,Zhou X,Sun J,Li Z

    更新日期:2020-12-14 00:00:00