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Title: Polymersomes eradicating intracellular bacteria
Author: Fenaroli, Federico
Robertson, James D.
Scarpa, Edoardo
Gouveia, Virginia M.
Guglielmo, Claudia Di
Pace, Cesare De
Elks, Philiip M.
Poma, Alessandro
Evangelopoulos, Dimitrios
Ortiz, Julio
Prajsnar, Tomasz K.
Marriott, Helen M.
Dockrell, David H.
Foster, Simon J.
McHugh, Timothy D.
Renshaw, Stephen A.
Samitier i Martí, Josep
Battaglia, Giuseppe
Rizzello, Loris
Keywords: Microorganismes patògens
Peix zebra
Pathogenic microorganisms
Zebra danio
Issue Date: 9-Jun-2020
Publisher: American Chemical Society
Abstract: Mononuclear phagocytes such as monocytes, tissue-specific macrophages, and dendritic cells are primary actors in both innate and adaptive immunity. These professional phagocytes can be parasitized by intracellular bacteria, turning them from housekeepers to hiding places and favoring chronic and/or disseminated infection. One of the most infamous is the bacteria that cause tuberculosis (TB), which is the most pandemic and one of the deadliest diseases, with one-third of the world’s population infected and an average of 1.8 million deaths/year worldwide. Here we demonstrate the effective targeting and intracellular delivery of antibiotics to infected macrophages both in vitro and in vivo, using pH-sensitive nanoscopic polymersomes made of PMPC–PDPA block copolymer. Polymersomes showed the ability to significantly enhance the efficacy of the antibiotics killing Mycobacterium bovis, Mycobacterium tuberculosis, and another established intracellular pathogen, Staphylococcus aureus. Moreover, they demonstrated to easily access TB-like granuloma tissues—one of the harshest environments to penetrate—in zebrafish models. We thus successfully exploited this targeting for the effective eradication of several intracellular bacteria, including M. tuberculosis, the etiological agent of human TB.
Note: Versió postprint del document publicat a:
It is part of: ACS Nano, 2020, vol. 14, num. 7, p. 8287-8298
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Appears in Collections:Articles publicats en revistes (Institut de Bioenginyeria de Catalunya (IBEC))

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