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Enhanced effects of curcumin encapsulated in polycaprolactone-grafted oligocarrageenan nanomicelles, a novel nanoparticle drug delivery system

Abstract : One of the most effective strategies to enhance the bioavailability and the therapeutic effect of hydrophobicdrugs is the use of nanocarriers. We have usedκ-carrageenan extracted fromKappaphycus alvareziito produceoligocarrageenanviaan enzymatic degradation process. Polycaprolactone (PCL) chains were grafted onto theoligocarrageenans using a protection/deprotection technique yielding polycaprolactone-grafted oligocarra-geenan. The resulting amphiphilic copolymers formed spherical nanomicelles with a mean size of 187 ± 21 nm.Hydrophobic drugs such as curcumin were efficiently encapsulated in the micelles and released within 24–72 hin solution. The micelles were non-cytotoxic and facilitated the uptake of curcumin by endothelial EA-hy926cells. They also increased the anti-inflammatory effect of curcumin in TNF-alpha-induced inflammation ex-periments. Finally,in vivoexperiments supported a lack of toxicity in zebrafish and thus the potential use ofpolycaprolactone-grafted oligocarrageenan to improve the delivery of hydrophobic compounds to different or-gans, including liver, lung and brain as shown in mice.
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https://hal.univ-reunion.fr/hal-02300880
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Submitted on : Monday, September 30, 2019 - 8:09:00 AM
Last modification on : Wednesday, October 14, 2020 - 3:45:44 AM

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Latufa Youssouf, Archana Bhaw-Luximon, Nicolas Diotel, Aurélie Catan, Pierre Giraud, et al.. Enhanced effects of curcumin encapsulated in polycaprolactone-grafted oligocarrageenan nanomicelles, a novel nanoparticle drug delivery system. Carbohydrate Polymers, Elsevier, 2019, 217, pp.35-45. ⟨10.1016/j.carbpol.2019.04.014⟩. ⟨hal-02300880⟩

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