Covalent Incorporation of Trehalose within Hydrogels for Enhanced Long-Term Functional Stability and Controlled Release of Biomacromolecules.

Covalent Incorporation of Trehalose within Hydrogels for Enhanced Long-Term Functional Stability and Controlled Release of Biomacromolecules.

Advanced healthcare materials (2015-06-20)

Timothy M O'Shea, Matthew J Webber, Alex A Aimetti, Robert Langer

ABSTRACT

Hydrogels with covalently incorporated trehalose are synthesized using thiol-ene Michael addition. Trehalose hydrogels afford prolonged stabilization and -controlled release of model enzymes in vitro and in vivo as well as preservation of protein stability under heat and -lyophilization stressors. Strong and -ordered hydrogen bonding interactions within covalently incorporated trehalose hydrogels represent a possible mechanism for protein stabilization.

MATERIALS

Product Number

Brand

Product Description

705551

Sigma-Aldrich

Hydrogen chloride solution, 3 M in cyclopentyl methyl ether (CPME)

717975

Sigma-Aldrich

Methanol, NMR reference standard

T9449

Sigma-Aldrich

D-(+)-Trehalose dihydrate, ≥99% (HPLC), from starch

87748

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3,3′,5,5′-Tetramethylbenzidine, ≥98.0% (NT)

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860336

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3,3′,5,5′-Tetramethylbenzidine, ≥99%

W332615

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Acetone, natural, ≥97%

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517747

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Aluminum oxide, mesoporous, MSU-X (wormhole), average pore size 3.8 nm

439126

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Acetone, suitable for HPLC, ≥99.9%

322415

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Methanol, anhydrous, 99.8%

L4777

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Lipase acrylic resin, ≥5,000 U/g, recombinant, expressed in Aspergillus niger

2104

Supelco

Hydrochloric acid solution, volumetric, 0.1 M HCl (0.1N), endotoxin free

T0167

Sigma-Aldrich

D-(+)-Trehalose dihydrate, from Saccharomyces cerevisiae, powder, BioReagent, suitable for cell culture, suitable for insect cell culture, ≥99%

T5251

Sigma-Aldrich

D-(+)-Trehalose dihydrate, ≥98.5% (HPLC), from Saccharomyces cerevisiae

T2885

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3,3′,5,5′-Tetramethylbenzidine, ≥98% (TLC)

T9531

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D-(+)-Trehalose dihydrate, ≥99% (HPLC), from Saccharomyces cerevisiae

T5525

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3,3′,5,5′-Tetramethylbenzidine, tablet, 1 mg substrate per tablet

84429

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Hydrochloric acid solution, ~6 M in H₂O, for amino acid analysis

H9892

Sigma-Aldrich

Hydrochloric acid solution, 1.0 N, BioReagent, suitable for cell culture

H1758

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Hydrochloric acid, 36.5-38.0%, BioReagent, for molecular biology

L092003

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Ethyl acetate

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Ethyl acetate

771422

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Vinyl acrylate, contains <600 ppm MEHQ as inhibitor

718475

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606723

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21115

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Sigma-Aldrich

Ethyl acetate, anhydrous, 99.8%