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Choi, H.S.* ; Ashitate, Y.* ; Lee, J.H.* ; Kim, S.H.* ; Matsui, A.* ; Insin, N.* ; Bawendi, M.G.* ; Semmler-Behnke, M. ; Frangioni, J.V.* ; Tsuda, A.*

Rapid translocation of nanoparticles from the lung airspaces to the body.

Nat. Biotechnol. 28, 1300-1303 (2010)
Open Access Green möglich sobald Postprint bei der ZB eingereicht worden ist.
Nano-size particles show promise for pulmonary drug delivery, yet their behavior after deposition in the lung remains poorly understood. In this study, a series of near-infrared (NIR) fluorescent nanoparticles were systematically varied in chemical composition, shape, size and surface charge, and their biodistribution and elimination were quantified in rat models after lung instillation. We demonstrate that nanoparticles with hydrodynamic diameter (HD) less than ≈34 nm and a noncationic surface charge translocate rapidly from the lung to mediastinal lymph nodes. Nanoparticles of HD < 6 nm can traffic rapidly from the lungs to lymph nodes and the bloodstream, and then be subsequently cleared by the kidneys. We discuss the importance of these findings for drug delivery, air pollution and carcinogenesis.
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Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
ISSN (print) / ISBN 0733-222X
e-ISSN 1546-1696
Zeitschrift Nature Biotechnology
Quellenangaben Band: 28, Heft: 12, Seiten: 1300-1303 Artikelnummer: , Supplement: ,
Verlag Nature Publishing Group
Verlagsort New York, NY
Begutachtungsstatus Peer reviewed