Planta Med 2017; 83(05): 366-381
DOI: 10.1055/s-0043-102949
Reviews
Georg Thieme Verlag KG Stuttgart · New York

Improving on Nature: The Role of Nanomedicine in the Development of Clinical Natural Drugs

Anna Rita Bilia
Department of Chemistry, University of Florence, Sesto Fiorentino, Florence, Italy
,
Vieri Piazzini
Department of Chemistry, University of Florence, Sesto Fiorentino, Florence, Italy
,
Clizia Guccione
Department of Chemistry, University of Florence, Sesto Fiorentino, Florence, Italy
,
Laura Risaliti
Department of Chemistry, University of Florence, Sesto Fiorentino, Florence, Italy
,
Martina Asprea
Department of Chemistry, University of Florence, Sesto Fiorentino, Florence, Italy
,
Giada Capecchi
Department of Chemistry, University of Florence, Sesto Fiorentino, Florence, Italy
,
Maria Camilla Bergonzi
Department of Chemistry, University of Florence, Sesto Fiorentino, Florence, Italy
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Weitere Informationen

Publikationsverlauf

received 25. September 2016
revised 16. Januar 2017

accepted 20. Januar 2017

Publikationsdatum:
08. Februar 2017 (online)

Preview

Abstract

Natural products have been used as a major source of drugs for millennia, and about half of the pharmaceuticals in use today are derived from natural products. However, their efficacy can be limited because of their low hydrophilicity and intrinsic dissolution rate(s), or physical/chemical instability. In addition, they can present scarce absorption, poor pharmacokinetics and bioavailability, scarce biodistribution, first-pass metabolism, trivial penetration and accumulation in the organs of the body, or low targeting efficacy. Novel nanoformulations based on drug delivery systems, namely nanoparticles, micelles, and vesicles, offer significant promise in overcoming these limitations. Nowadays, nanomedicine is crucial in developing appropriate therapeutic treatments of essential drugs, specifically antitumor and antiparasistic agents (i.e., Taxol, vincristine, camptothecin, doxorubicin, artemisinin) and other emerging molecules with pleiotropic functions (i.e., resveratrol, curcumin, salvianolic acid B, honokiol). Additionally, the number of nanoformulations developed with flavonoids, in particular rutin, quercetin, silymarin, and green tea catechins, is constantly increasing, and a significant number of publications have appeared in the last decade pertaining to nanoformulations based on extracts and essential oils. Most of these studies report very promising nanoformulations with sustained release and improved bioavailability at much lower doses than conventional preparations, and in many cases, also a better safety profile.

Supporting Information

Data which represent parasitemia progression for mice groups infected with P. berghei and treated with ART loaded in lipososmes, in vitro cytotoxicity of free ART, ART-L, and ART-L-Tf on HCT-8 colon cancer cells, and the effects of dendrosomal curcumin, free curcumin, and empty dendrosome on the viability of U87MG cells, human bone marrow-derived stem cells, and HFSF-PI3 cells are available as Supporting Information.