Stabilization of resveratrol in blood circulation by conjugation to mPEG and mPEG-PLA polymers: investigation of conjugate linker and polymer composition on stability, metabolism, antioxidant activity and pharmacokinetic profile

Resveratrol is naturally occurring phytochemical with diverse biological activities such as chemoprevention, anti-inflammatory, anti-cancer, anti-oxidant. But undergoes rapid metabolism in the body (half life 0.13h). Hence Polymer conjugation utilizing different chemical linkers and polymer composit...

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Veröffentlicht in:PloS one 2015-03, Vol.10 (3), p.e0118824-e0118824
Hauptverfasser: Siddalingappa, Basavaraj, Benson, Heather A E, Brown, David H, Batty, Kevin T, Chen, Yan
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Benson, Heather A E
Brown, David H
Batty, Kevin T
Chen, Yan
description Resveratrol is naturally occurring phytochemical with diverse biological activities such as chemoprevention, anti-inflammatory, anti-cancer, anti-oxidant. But undergoes rapid metabolism in the body (half life 0.13h). Hence Polymer conjugation utilizing different chemical linkers and polymer compositions was investigated for enhanced pharmacokinetic profile of resveratrol. Ester conjugates such as α-methoxy-ω-carboxylic acid poly(ethylene glycol) succinylamide resveratrol (MeO-PEGN-Succ-RSV) (2 and 20 kDa); MeO-PEG succinyl ester resveratrol (MeO-PEGO-Succ-RSV) (2 kDa); α-methoxy poly(ethylene glycol)-co-polylactide succinyl ester resveratrol (MeO-PEG-PLAO-Succ-RSV) (2 and 6.6kDa) were prepared by carbodiimide coupling reactions. Resveratrol-PEG ethers (2 and 5 kDa) were synthesized by alkali-mediated etherification. All polymer conjugates were fully characterized in vitro and the pharmacokinetic profile of selected conjugates was characterized in rats. Buffer and plasma stability of conjugates was dependent on polymer hydrophobicity, aggregation behavior and PEG corona, with MeO-PEG-PLAO-Succ-RSV (2 kDa) showing a 3h half-life in rat plasma in vitro. Polymer conjugates irrespective of linker chemistry protected resveratrol against metabolism in vitro. MeO-PEG-PLAO-Succ-RSV (2 kDa), Resveratrol-PEG ether (2 and 5 kDa) displayed improved pharmacokinetic profiles with significantly higher plasma area under curve (AUC), slower clearance and smaller volume of distribution, compared to resveratrol.
doi_str_mv 10.1371/journal.pone.0118824
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But undergoes rapid metabolism in the body (half life 0.13h). Hence Polymer conjugation utilizing different chemical linkers and polymer compositions was investigated for enhanced pharmacokinetic profile of resveratrol. Ester conjugates such as α-methoxy-ω-carboxylic acid poly(ethylene glycol) succinylamide resveratrol (MeO-PEGN-Succ-RSV) (2 and 20 kDa); MeO-PEG succinyl ester resveratrol (MeO-PEGO-Succ-RSV) (2 kDa); α-methoxy poly(ethylene glycol)-co-polylactide succinyl ester resveratrol (MeO-PEG-PLAO-Succ-RSV) (2 and 6.6kDa) were prepared by carbodiimide coupling reactions. Resveratrol-PEG ethers (2 and 5 kDa) were synthesized by alkali-mediated etherification. All polymer conjugates were fully characterized in vitro and the pharmacokinetic profile of selected conjugates was characterized in rats. Buffer and plasma stability of conjugates was dependent on polymer hydrophobicity, aggregation behavior and PEG corona, with MeO-PEG-PLAO-Succ-RSV (2 kDa) showing a 3h half-life in rat plasma in vitro. Polymer conjugates irrespective of linker chemistry protected resveratrol against metabolism in vitro. MeO-PEG-PLAO-Succ-RSV (2 kDa), Resveratrol-PEG ether (2 and 5 kDa) displayed improved pharmacokinetic profiles with significantly higher plasma area under curve (AUC), slower clearance and smaller volume of distribution, compared to resveratrol.</abstract><cop>United States</cop><pub>Public Library of Science</pub><pmid>25799413</pmid><doi>10.1371/journal.pone.0118824</doi><oa>free_for_read</oa></addata></record>
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subjects Aggregation behavior
Animals
Antioxidants
Antioxidants (Nutrients)
Antioxidants - administration & dosage
Antioxidants - chemistry
Antioxidants - metabolism
Antioxidants - pharmacokinetics
Blood circulation
Buffers (chemistry)
Cancer
Carbodiimide
Carboxylic acids
Chemical reactions
Chemical synthesis
Chemotherapy
Conjugates
Conjugation
Corona
Drug Stability
Ethers
Ethylene glycols
Half-life
Hydrophobicity
Inflammation
Investigations
Male
Metabolism
Metabolites
MPEG encoders
Pharmacokinetics
Pharmacology
Polyesters - chemistry
Polyethylene glycol
Polyethylene Glycols - chemistry
Polyethylene Glycols - metabolism
Polylactic acid
Polymer industry
Polymers
Rats
Rats, Wistar
Resveratrol
Rodents
Stability
Stilbenes - administration & dosage
Stilbenes - blood
Stilbenes - chemistry
Stilbenes - metabolism
Stilbenes - pharmacokinetics
Studies
Succinic Acid - chemistry
Video compression
title Stabilization of resveratrol in blood circulation by conjugation to mPEG and mPEG-PLA polymers: investigation of conjugate linker and polymer composition on stability, metabolism, antioxidant activity and pharmacokinetic profile
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